condition found tbRes List
SK, Shikonin: Click to Expand ⟱
Features:
The (R)-enantiomer of alkannin is known as shikonin, and the racemic mixture of the two is known as shikalkin.
Shikonin is a naphthoquinone derivative primarily isolated from the roots of plants in the Boraginaceae family (e.g., Lithospermum erythrorhizon).
Shikonin is the main active component of a Chinese medicinal plant 'Zi Cao'
-Shikonin is a major component of zicao (purple gromwell, the dried root of Lithospermum erythrorhizon), a Chinese herbal medicine with anti-inflammatory properties
-Quinone methides (QMs) are highly reactive intermediates formed from natural compounds like shikonin
-ic50 cancer cells 1-10uM, normal cells >10uM

-known as Glycolysis inhibitor: ( inhibit pyruvate kinase M2 (PKM2*******), a key enzyme in the glycolytic pathway)

Available from mcsformulas.com Shikonin Pro Liposomal, 30 mg
Also In Glycolysis Inhibithree(100 mg PHLORIZIN,10 mg TANSHINONE IIA, 8 mg Shikonin)

-Note half-life15-30mins or 8hr?.
BioAv low, poor water solubility
Pathways:
- usually induce ROS production in cancer cells, and reduce ROS in normal cells.
- ROS↑ related: MMP↓(ΔΨm), ER Stress↑, GRP78↑, Ca+2↑, Cyt‑c↑, Caspases↑, DNA damage↑, cl-PARP↑, HSP↓,
- Lowers AntiOxidant defense in Cancer Cells: NRF2↓, TrxR↓**, SOD↓, GSH↓ Catalase↓ GPx4↓
- Raises AntiOxidant defense in Normal Cells: ROS↓, NRF2↑, SOD↑, GSH↑, Catalase↑,
- lowers Inflammation : NF-kB↓, COX2↓, p38↓, Pro-Inflammatory Cytokines : NLRP3↓, IL-1β↓, TNF-α↓, IL-6↓, IL-8↓
- inhibit Growth/Metastases : TumMeta↓, TumCG↓, EMT↓, MMPs↓, MMP2↓, MMP9↓, IGF-1↓, uPA↓, VEGF↓, FAK↓, NF-κB↓, TGF-β↓, ERK↓
- cause Cell cycle arrest : TumCCA↑, cyclin D1↓, cyclin E↓, CDK2↓, CDK4↓,
- inhibits Migration/Invasion : TumCMig↓, TumCI↓, FAK↓, ERK↓, EMT↓,
- inhibits glycolysis /Warburg Effect and ATP depletion : HIF-1α↓, PKM2↓, cMyc↓, GLUT1↓, LDH↓, LDHA↓, HK2↓, PFKs↓, PDKs↓, ECAR↓, OXPHOS↓, GRP78↑, GlucoseCon↓
- inhibits angiogenesis↓ : VEGF↓, HIF-1α↓, EGFR↓, Integrins↓,
- Others: PI3K↓, AKT↓, JAK↓, STAT↓, β-catenin↓, AMPK, ERK↓, JNK, P53↑,
- Synergies: chemo-sensitization, chemoProtective, RadioSensitizer, Others(review target notes), Neuroprotective, Cognitive, Renoprotection, Hepatoprotective, CardioProtective,

- Selectivity: Cancer Cells vs Normal Cells


PKM2, Pyruvate Kinase, Muscle 2: Click to Expand ⟱
Source:
Type: enzyme
PKM2 (Pyruvate Kinase, Muscle 2) is an enzyme that plays a crucial role in glycolysis, the process by which cells convert glucose into energy. PKM2 is a key regulatory enzyme in the glycolytic pathway, and it is primarily expressed in various tissues, including muscle, brain, and cancer cells.
-C-myc is a common oncogene that enhances aerobic glycolysis in the cancer cells by transcriptionally activating GLUT1, HK2, PKM2 and LDH-A
-PKM2 has been shown to be overexpressed in many types of tumors, including breast, lung, and colon cancer. This overexpression may contribute to the development and progression of cancer by promoting glycolysis and energy production in cancer cells.
-inhibition of PKM2 may cause ATP depletion and inhibiting glycolysis.
-PK exists in four isoforms: PKM1, PKM2, PKR, and PKL
-PKM2 plays a role in the regulation of glucose metabolism in diabetes.
-PKM2 is involved in the regulation of cell proliferation, apoptosis, and autophagy.
– Pyruvate kinase catalyzes the final, rate-limiting step of glycolysis, converting phosphoenolpyruvate (PEP) to pyruvate with the production of ATP.
– The PKM2 isoform is uniquely regulated and can exist in both highly active tetrameric and less active dimeric forms.
– Cancer cells often favor the dimeric form of PKM2 to slow pyruvate production, thereby accumulating upstream glycolytic intermediates that can be diverted into anabolic pathways to support cell growth and proliferation.
– Under low oxygen conditions, cancer cells rely on altered metabolic pathways in which PKM2 is a key player. – The shift to aerobic glycolysis (Warburg effect) orchestrated in part by PKM2 helps tumor cells survive and grow in hypoxic conditions.

– Elevated expression of PKM2 is frequently observed in many cancer types, including lung, breast, colorectal, and pancreatic cancers.
– High levels of PKM2 are often correlated with enhanced tumor aggressiveness, poor differentiation, and advanced clinical stage.

PKM2 in carcinogenesis and oncotherapy

Inhibitors of PKM2:
-Shikonin, Resveratrol, Baicalein, EGCG, Apigenin, Curcumin, Ursolic Acid, Citrate (best known as an allosteric inhibitor of phosphofructokinase-1 (PFK-1), a key rate-limiting enzyme in glycolysis) potential to directly inhibit or modulate PKM2 is less well established

Full List of PKM2 inhibitors from Database
-key connected observations: Glycolysis↓, lactateProd↓, ROS↑ in cancer cell, while some result for opposite effect on normal cells.
Tumor pyruvate kinase M2 modulators

Flavonoids effect on PKM2
Compounds name IC50/AC50uM Effect
Flavonols
1. Fisetin 0.90uM Inhibition
2. Rutin 7.80uM Inhibition
3. Galangin 8.27uM Inhibition
4. Quercetin 9.24uM Inhibition
5. Kaempferol 9.88uM Inhibition
6. Morin hydrate 37.20uM Inhibition
7. Myricetin 0.51uM Activation
8. Quercetin 3-b- D-glucoside 1.34uM Activation
9. Quercetin 3-D -galactoside 27-107uM Ineffective
Flavanons
10. Neoeriocitrin 0.65uM Inhibition
11. Neohesperidin 14.20uM Inhibition
12. Naringin 16.60uM Inhibition
13. Hesperidin 17.30uM Inhibition
14. Hesperitin 29.10uM Inhibition
15. Naringenin 70.80uM Activation
Flavanonols
16. (-)-Catechin gallateuM 0.85 Inhibition
17. (±)-Taxifolin 1.16uM Inhibition
18. (-)-Epicatechin 1.33uM Inhibition
19. (+)-Gallocatechin 4-16uM Ineffective
Phenolic acids
20. Ferulic 11.4uM Inhibition
21. Syringic and 13.8uM Inhibition
22. Caffeic acid 36.3uM Inhibition
23. 3,4-Dihydroxybenzoic acid 78.7uM Inhibition
24. Gallic acid 332.6uM Inhibition
25. Shikimic acid 990uM Inhibition
26. p-Coumaric acid 22.2uM Activation
27. Sinapinic acids 26.2uM Activation
28. Vanillic 607.9uM Activation


Scientific Papers found: Click to Expand⟱
2360- SK,    Shikonin inhibits growth, invasion and glycolysis of nasopharyngeal carcinoma cells through inactivating the phosphatidylinositol 3 kinase/AKT signal pathway
- in-vitro, NPC, HONE1 - in-vitro, NPC, SUNE-1
TumCP↓, Shikonin treatment effectively suppressed cell proliferation and induced obvious cell apoptosis compared with the control.
Apoptosis↑,
TumCMig↓, Shikonin treatment suppressed cell migration and invasion effectively.
TumCI↓,
GlucoseCon↓, Shikonin treatment suppressed cell glucose uptake, lactate release and ATP level.
lactateProd↓,
ATP↓,
PKM2↓, activity of PKM2 was also largely inhibited by Shikonin
PI3K↓, PI3K/AKT signal pathway was inactivated by Shikonin treatment
Akt↓,
MMP3↓, MMP-3 and MMP-9 was decreased and the expression of TIMP was increased by Shikonin in HONE1 and SUNE-1 cells
MMP9↓,
TIMP1↑,

2359- SK,    Regulating lactate-related immunometabolism and EMT reversal for colorectal cancer liver metastases using shikonin targeted delivery
- in-vivo, Liver, NA
TumCG↓, SHK@HA-MPDA achieved tumor-targeted delivery via hyaluronic acid-mediated binding with the tumor-associated CD44, and efficiently arrested colorectal tumor growth
PKM2↓, The inhibition of PKM2 by SHK@HA-MPDA led to the remodeling of the tumor immune microenvironment
EMT↓, reversing EMT by lactate abatement and the suppression of TGFβ signaling
TGF-β↓,
Glycolysis↓, EMT reversal by suppressing glycolysis and lactate production
lactateProd↓,
ATP↓, SHK@HA-MPDA nanosystem efficiently inhibited tetramer PKM2 and further reduced lactate and ATP production

2358- SK,    SIRT1 improves lactate homeostasis in the brain to alleviate parkinsonism via deacetylation and inhibition of PKM2
- in-vivo, Park, NA
*eff↑, inhibition of PKM2 by shikonin or PKM2-IN-1 alleviates parkinsonism in mice
*PKM2↓,
*motorD↑, Behavioral tests showed that shikonin treatment improved the performance on rotarod, tail suspension, and olfaction (Figure 7B).
*lactateProd↓, Lactate in the CSF was reduced in shikonin-treated A30P mice

2357- SK,    GTPBP4 promotes hepatocellular carcinoma progression and metastasis via the PKM2 dependent glucose metabolism
- Study, HCC, NA - in-vivo, NA, NA
AntiTum↑, Shikonin exerted a remarkable antitumor effect in many tumors.
GTPBP4↓, We found that, first Shikonin could inhibit the binding of GTPBP4 and PKM2 proteins
PKM2↓,
lactateProd↓, increased lactate production and glucose consumption activity by GTPBP4 overexpression in PLC/PRF/5 and SMMC-7721 cells cells could be fully antagonized by Shikonin
GlucoseCon↓,
Glycolysis↓, Shikonin could suppress HCC growth and glycolysis through inhibiting PKM2 dependent glucose metabolism
E-cadherin↑, Downregulation of E-cadherin in GTPBP4 overexpression PLC/PRF/51 xenografts was also rescued by Shikonin treatment
TumCG↓, We found that Shikonin administration efficiently suppresses tumor growth in orthotopic xenograft mouse models of HCC

2356- SK,    ESM1 enhances fatty acid synthesis and vascular mimicry in ovarian cancer by utilizing the PKM2-dependent warburg effect within the hypoxic tumor microenvironment
- in-vitro, Ovarian, CaOV3 - in-vitro, Ovarian, OV90 - in-vivo, NA, NA
PKM2↓, Shikonin effectively inhibits the molecular interaction between ESM1 and PKM2, consequently preventing the formation of PKM2 dimers and thereby inhibiting ovarian cancer glycolysis, fatty acid synthesis and vasculogenic mimicry.
Glycolysis↓, Shikonin inhibited glycolysis in OV90 cells
FASN↓,
lactateProd↓, In both CAOV3 and OV90 cells, the levels of lactic acid were significantly reduced in the ESM1 and Shikonin group when compared to the ESM1-overexpressing group
Warburg↓, Shikonin could repress the interaction between PKM2 and ESM1 and the formation of PKM2 dimers to attenuate OC migration and invasion and VM by driving the Warburg effect in vitro.
TumCG↓, Shikonin itself significantly inhibited tumor growth
VM↓, Shikonin significantly attenuates the OC growth and the VM of OC cells

2355- SK,    Pharmacological properties and derivatives of shikonin-A review in recent years
- Review, Var, NA
AntiCan↑, anticancer effects on various types of cancer by inhibiting cell proliferation and migration, inducing apoptosis, autophagy, and necroptosis.
TumCP↓,
TumCMig↓,
Apoptosis↑,
TumAuto↑,
Necroptosis↑,
ROS↑, Shikonin also triggers Reactive Oxygen Species (ROS) generation
TrxR1↓, inhibiting the activation of TrxR1, PKM2, RIP1/3, Src, and FAK
PKM2↓,
RIP1↓,
RIP3↓,
Src↓,
FAK↓,
PI3K↓, modulating the PI3K/AKT/mTOR and MAPKs signaling;
Akt↓, shikonin induced a dose-dependent reduction of miR-19a to inhibit the activity of PI3K/AKT/mTOR pathway
mTOR↓,
GRP58↓, shikonin induced apoptosis in human myeloid cell line HL-60 cells through downregulating the expression of ERS protein ERP57 (42).
MMPs↓, hikonin suppressed cell migration through inhibiting the NF-κB pathway and reducing the expression of MMP-2 and MMP-9
ATF2↓, shikonin inhibited cell proliferation and tumor growth through suppressing the ATF2 pathway
cl‑PARP↑, shikonin significantly upregulated the expression of apoptosis-related proteins cleaved PARP and caspase-3 and increased cell apoptosis through increasing the phosphorylation of p38 MAPK and JNK, and inhibiting the phosphorylation of ERK
Casp3↑,
p‑p38↑,
p‑JNK↑,
p‑ERK↓,

2354- SK,    PKM2-dependent glycolysis promotes NLRP3 and AIM2 inflammasome activation
- in-vivo, Sepsis, NA
PKM2↓, Shikonin is a potent PKM2 inhibitor in cancer cells and macrophages
*PKM2↓,
*IL1β↓, Shikonin dose-dependently inhibited IL-1β, IL-18 and HMGB1 release in activated BMDMs following treatment with NLRP3 inflammasome activator (for example, ATP) or AIM2 inflammasome activator
*IL18↓,
*HMGB1↓,
*Casp1↓, shikonin significantly inhibited caspase-1 activation triggered by stimulation with ATP
*NLRP3↓, pharmacologic inhibition of PKM2 by shikonin selectively suppresses NLRP3 and AIM2 inflammasome activation.
*AIM2↓,
*p‑eIF2α↓, Shikonin inhibited EIF2AK2 phosphorylation (Fig. 6a) and caspase-1 activity (Fig. 6b) in PMs obtained from mice subjected to lethal endotoxemia or polymicrobial sepsis.
*Sepsis↓,

2361- SK,    Natural shikonin and acetyl-shikonin improve intestinal microbial and protein composition to alleviate colitis-associated colorectal cancer
- in-vivo, CRC, NA
GutMicro↑, Both SK and acetyl-SK decreased AOM/DSS-induced CAC, and regulated the intestinal flora structure in CAC mouse model
Dose↝, 20 mg/kg SK exhibited the most effective functions, even better than the positive drug mesalazine.
IL1β↓, SK could recover the increase of pro-inflammatory cytokines (including IL-1β, IL-6 and TNF-α), the upregulation of pyruvate kinase isozyme type M2 (PKM2)
IL6↓,
TNF-α↓,
PKM2↓,

2223- SK,    Non-metabolic enzyme function of PKM2 in hepatocellular carcinoma: A review
- in-vitro, Var, NA
PKM2↓, Many studies have found that shikonin can inhibit PKM2 expression in various tumors and is a classic PKM2 inhibitor

2470- SK,    PKM2/PDK1 dual-targeted shikonin derivatives restore the sensitivity of EGFR-mutated NSCLC cells to gefitinib by remodeling glucose metabolism
- in-vitro, Lung, H1299
PKM2↓, Base on this, we designed a series of novel shikonin (SK) thioether derivatives as PKM2/PDK1 dual-target agents, among which the most potent compound E5 featuring a 2-methyl substitution on the benzene ring exerted significantly increased inhibitory
PDK1↓,
Glycolysis↓, E5 could significantly inhibit the proliferation and aerobic glycolysis of NSCLC cell

3045- SK,    Cutting off the fuel supply to calcium pumps in pancreatic cancer cells: role of pyruvate kinase-M2 (PKM2)
- in-vitro, PC, MIA PaCa-2
ECAR↓, Shikonin caused a concentration- and time-dependent inhibition of ECAR, which was more effective in highly glycolytic cells cultured in high-glucose (25 mM, Fig. 3ci) vs glucose-restricted cells (5 mM, Fig. 3cii).
Glycolysis↓, Collectively, these data suggest that shikonin exerts its cytotoxicity by inhibiting glycolysis and inducing ATP depletion, most likely due to inhibition of PKM2.
ATP↓, Only the highest concentration of shikonin (5 µM) induced a significant ATP depletion between 15 min and 6 h
PKM2↓,
TumCMig↓, Shikonin reduces PDAC cell migration
Ca+2↑, Shikonin induces cytotoxic Ca2+ overload
GlucoseCon↓, shikonin inhibited glucose consumption and lactate production with an IC50 of 5–10 μM in MCF-7 cells that exclusively express PKM2
lactateProd↓,
MMP↓, Shikonin is also reported to impair mitochondrial function and increase oxidative stress
ROS↑,

3041- SK,    Promising Nanomedicines of Shikonin for Cancer Therapy
- Review, Var, NA
Glycolysis↓, SHK could regulate immunosuppressive tumor microenvironment through inhibiting glycolysis of tumor cells and repolarizing tumor-associated macrophages (TAMs).
TAMS↝,
BioAv↓, HK is a hydrophobic natural molecule with unsatisfactory solubility, rapid intestinal absorption, obvious “first pass” effect, and rapid clearance, leading to low oral bioavailability.
Half-Life↝, SHK displays a half-life of 15.15 ± 1.41 h and Cmax of 0.94 ± 0.11 μg/ml in rats when administered intravenously.
P21↑, Table 1
ERK↓,
ROS↑,
GSH↓,
MMP↓,
TrxR↓,
MMP13↓,
MMP2↓,
MMP9↓,
SIRT2↑,
Hif1a↓,
PKM2↓,
TumCP↓, Inhibit Cell Proliferation
TumMeta↓, Inhibit Cells Metastasis and Invasion
TumCI↓,

3040- SK,    Pharmacological Properties of Shikonin – A Review of Literature since 2002
- Review, Var, NA - Review, IBD, NA - Review, Stroke, NA
*Half-Life↝, One study using H-shikonin in mice showed that shikonin was rapidly absorbed after oral and intramuscular administration, with a half-life in plasma of 8.79 h and a distribution volume of 8.91 L/kg.
*BioAv↓, shikonin is generally used in creams and ointments, that is, oil-based preparations; indeed, its insolubility in water is usually the cause of its low bioavailability
*BioAv↑, 200-fold increase in the solubility, photostability, and in vitro permeability of shikonin through the formation of a 1 : 1 inclusion complex with hydroxypropyl-β-cyclodextrin.
*BioAv↑, 181-fold increase in the solubility of shikonin in aqueous media in the presence of β-lactoglobulin at a concentra- tion of 3.1 mg/mL
*Inflam↓, anti-inflammatory effect of shikonin
*TNF-α↓, shikonin inhibited TNF-α production in LPS-stimulated rat primary macrophages as well as NF-κB translocation from the cytoplasm to the nucleus.
*other↑, authors found that treatment with shikonin prevented the shortening of the colorectum and decreased weight loss by 5 % while improving the ap- pearance of feces and preventing bloody stools.
*MPO↓, MPO activity was reduced as well as the expression of COX-2, the activation of NF-κB and that of STAT3.
*COX2↓,
*NF-kB↑,
*STAT3↑,
*antiOx↑, Antioxidant Effects of Shikonin
*ROS↓, radical scavenging activity of shikonin
*neuroP↑, shown to exhibit a neuroprotective effect against the damage caused by ischemia/reperfusion in adult male Kunming mice
*SOD↑, it also attenuated neuronal damage and the upregulation of superoxide dismutase, catalase, and glutathione peroxidase activities while reducing the glutathione/glutathione disulfide ratio.
*Catalase↑,
*GPx↑,
*Bcl-2↑, shikonin upregulated Bcl-2, downregulated Bax and prevented cell nuclei from undergoing morphological changes typical of apoptosis.
*BAX↓,
cardioP↑, Two different studies have suggested a possible cardioprotective effect of shikonin that would be related to its anti-inflammatory and antioxidant effects.
AntiCan↑, A wide spectrum of anticancer mechanisms of action have been described for shikonin:
NF-kB↓, suppression of NF-κB-regulated gene products [44],
ROS↑, ROS generation [46],
PKM2↓, inhibition of tumor-specific pyruvate kinase-M2 [47,48]
TumCCA↑, cell cycle arrest [49]
Necroptosis↑, or induction of necroptosis [50],
Apoptosis↑, shikonin at 1 μM induced caspase-dependent apoptosis in U937 cells after 6 h with an increase in DNA fragmentation, intracellular ROS, low mitochondrial membrane potential
DNAdam↑,
MMP↓,
Cyt‑c↑, At 10 μM, shikonin induced a greater release of cytochrome c from the mitochondria and of lactate dehydrogenase,
LDH↝,

2420- SK,    Pyruvate kinase M2 regulates mitochondrial homeostasis in cisplatin-induced acute kidney injury
- in-vivo, AKI, NA
PKM2↓, Shikonin is a naphthoquinone compound extracted from the roots of Chinese traditional medicine and has been identified as a new PKM2 inhibitor that prevents glycolysis in cancer cells
other↝, In our study, we demonstrate that PKM2 translocates into mitochondria in renal tubular epithelial cells during AKI induced by cisplatin.

2419- SK,    Regulation of glycolysis and the Warburg effect in wound healing
- in-vivo, Nor, NA
Glycolysis↓, Treatment with 5–10 μM of the glycolysis inhibitor shikonin significantly decreased gene expression of the facilitative glucose transporters, GLUT1 and GLUT3
GLUT1↓,
GLUT3↓,
HK2↓, shikonin downregulated expression of the rate-limiting enzymes HK1 and HK2, although a 20 μM dose was needed
HK1↓, HK1
PFK1↓, Shikonin treatment also downregulated the rate-limiting enzyme PFK1
PFK2↓, PFK2 expression was only significantly lowered with a 20 μM dose
PKM2↓, 5 μM shikonin treatment inhibits gene expression of PKM2 (8.59 vs. 2.30, P < 0.001) and downregulated PDK1
lactateProd↓, coupled with decreased lactate production at higher concentrations of shikonin (10 μM and 20 μM)
GlucoseCon↓, shikonin effectively downregulated key enzymes involved in glucose uptake, glycolysis, and lactate production

2418- SK,    Experimental Study of Hepatocellular Carcinoma Treatment by Shikonin Through Regulating PKM2
- in-vitro, HCC, SMMC-7721 cell - in-vitro, HCC, HUH7 - in-vitro, HCC, HepG2
tumCV↓, The results of CCK-8 showed that shikonin significantly inhibited cell viability of HCC cells.
GlucoseCon↓, The levels of glucose uptake and lactate production were dramatically decreased by shikonin-treated.
lactateProd↓,
ChemoSen↑, shikonin enhanced the anti-cancer effect of sorafenib in vitro and in vivo.
PKM2↓, By inhibiting PKM2, shikonin inhibited proliferation and glycolysis and induced cell apoptosis in HCC cells.
Glycolysis↓,

2417- SK,    Shikonin inhibits the Warburg effect, cell proliferation, invasion and migration by downregulating PFKFB2 expression in lung cancer
- in-vitro, Lung, A549 - in-vitro, Lung, H446
TumCP↓, Shikonin treatment decreased the proliferation, migration, invasion, glucose uptake, lactate levels, ATP levels and PFKFB2 expression levels and increased apoptosis in lung cancer cells in a dose‑dependent manner.
TumCMig↓,
TumCI↓,
GlucoseCon↓,
lactateProd↓,
PFKFB2↓,
Warburg↓, shikonin inhibited the Warburg effect and exerted antitumor activity in lung cancer cells, which was associated with the downregulation of PFKFB2 expression.
GLUT1∅, while the expression levels of the other proteins (PDK1, GLUT1, PGK2, LDHA, PKM2, GLUT3, PDH and p-PDH) were not altered by shikonin treatment.
LDHA∅,
PKM2∅,
GLUT3∅,
PDH∅,

2416- SK,    Shikonin induces cell death by inhibiting glycolysis in human testicular cancer I-10 and seminoma TCAM-2 cells
- in-vitro, Testi, TCAM-2
MMP↓, Shikonin treatment significantly reduced mitochondrial membrane potential, increased ROS levels and lower the level of lactic acid in both I-10 and TCAM-2 cells
ROS↑,
lactateProd↓,
Bcl-2↓, shikonin treatment significantly down- regulated the expressions of Bax, Bcl-2, cleaved caspase-3, PKM2, GLUT1 and HK2, and up-regulated the expression of autophagy-related protein LC3B
cl‑Casp3↓,
PKM2↓,
GLUT1↓,
HK2↓,
LC3B↑,

2415- SK,    Shikonin induces programmed death of fibroblast synovial cells in rheumatoid arthritis by inhibiting energy pathways
- in-vivo, Arthritis, NA
Apoptosis?, shikonin induced apoptosis and autophagy in RA-FLSs by activating the production of reactive oxygen species (ROS) and inhibiting intracellular ATP levels, glycolysis-related proteins, and the PI3K-AKT-mTOR signaling pathway.
TumAuto↑,
ROS↑,
ATP↓,
Glycolysis↓, shikonin can inhibit RA-glycolysis in FLSs
PI3K↓,
Akt↓,
mTOR↓,
*Apoptosis↓, Shikonin can significantly reduce the expression of apoptosis-related proteins, paw swelling in rat arthritic tissues, and the levels of inflammatory factors in peripheral blood, such as TNF-α, IL-6, IL-8, IL-10, IL-17A, and IL-1β while showing less
*Inflam↓,
*TNF-α↓,
*IL6↓,
*IL8↓,
*IL10↓,
*IL17↓,
*hepatoP↑, while showing less toxicity to the liver and kidney.
*RenoP↑,
PKM2↓, The expression of glycogen proteins PKM2, GLUT1, and HK2 decreased with increasing concentrations of shikonin
GLUT1↓,
HK2↓,

2370- SK,    The role of pyruvate kinase M2 in anticancer therapeutic treatments
- Review, Var, NA
Glycolysis↓, In summary, shikonin is able to inhibit tumor growth by suppressing aerobic glycolysis, which is mediated by PKM2 in vivo
PKM2↓,
EGFR↓, another study indicated that shikonin reduced epidermal growth factor receptor, PI3K, p-AKT, Hypoxia inducible factor-1α (HIF-1α) and PKM2 expression levels
PI3K↓,
p‑Akt↓,
Hif1a↓,

2364- SK,    Pyruvate Kinase M2 Mediates Glycolysis Contributes to Psoriasis by Promoting Keratinocyte Proliferation
- in-vivo, PSA, NA
eff↑, Shikonin or 2-DG treatment significantly attenuated the severity of skin lesions in animals
lactateProd↓, Lactate measurement showed decreased serum lactate levels in the Shikonin or 2-DG treatment IMQ-induced mice, compared with that in the IMQ treatment group
PKM2↓, results suggested that PKM2 inhibition may be an important approach for psoriasis treatment.

2363- SK,    Inhibition of PKM2 by shikonin impedes TGF-β1 expression by repressing histone lactylation to alleviate renal fibrosis
- in-vivo, CKD, NA
PKM2↓, In UUO mice, treatment with shikonin, a potent PKM2 inhibitor, effectively reduced lactate production, alleviated renal fibrosis, decreased TGF-β1 expression, and suppressed the MMT process.
lactateProd↓,
TGF-β↓,

2362- SK,    RIP1 and RIP3 contribute to shikonin-induced glycolysis suppression in glioma cells via increase of intracellular hydrogen peroxide
- in-vitro, GBM, U87MG - in-vivo, GBM, NA - in-vitro, GBM, U251
RIP1↑, we found shikonin activated RIP1 and RIP3 in glioma cells in vitro and in vivo, which was accompanied with glycolysis suppression
RIP3↑,
Glycolysis↓,
G6PD↓, shikonin-induced decreases of glucose-6-phosphate and pyruvate and downregulation of HK II and PKM2
HK2↓,
PKM2↓,
H2O2↑, shikonin also triggered accumulation of intracellular H2O2 and depletion of GSH and cysteine
GSH↓,
ROS↑, It was documented that inhibition of HK II with its inhibitor 3-bromopyruvate or knockdown of its level resulted in accumulation of ROS

2186- SK,    Shikonin differentially regulates glucose metabolism via PKM2 and HIF1α to overcome apoptosis in a refractory HCC cell line
- in-vitro, HCC, HepG2 - in-vitro, HCC, HCCLM3
Glycolysis↓, shikonin treatment has been reported to inhibit glycolysis by suppressing the activity of pyruvate kinase M2 (PKM2) and to induce apoptosis by increasing reactive oxygen species (ROS) production.
PKM2↓,
Apoptosis↑,
ROS↑,
OXPHOS⇅, Shikonin up-regulated mitochondrial biogenesis to increase mitochondrial oxidative phosphorylation in HepG2 cells, but displayed the opposite trend in HCCLM3 cells.
eff↓, insensitivity of HCCLM3 cells to shikonin treatment.

2185- SK,    Shikonin Inhibits Tumor Growth in Mice by Suppressing Pyruvate Kinase M2-mediated Aerobic Glycolysis
- in-vitro, Lung, LLC1 - in-vitro, Melanoma, B16-BL6 - in-vivo, NA, NA
Glycolysis↓, confirming the inhibitory effect of shikonin on tumor aerobic glycolysis
GlucoseCon↓, shikonin dose-dependently inhibited glucose uptake and lactate production in Lewis lung carcinoma (LLC) and B16 melanoma cells
lactateProd↓,
PKM2↓, suppression of cell aerobic glycolysis by shikonin is through decreasing PKM2 activity
selectivity↑, shikonin treatment significantly promoted tumor cell apoptosis compared to untreated control cells.
Warburg↓, agreement with previous findings of shikonin as a Warburg effect inhibitor
TumVol↓, A significant reduction of tumor size (Fig. 7B) and weight (Fig. 7C) was observed when shikonin was injected at concentration of 1 or 10 mg/kg.
TumW↓,

2184- SK,  Cisplatin,    PKM2 Inhibitor Shikonin Overcomes the Cisplatin Resistance in Bladder Cancer by Inducing Necroptosis
- in-vitro, CRC, T24
PKM2↓, Down-regulation of PKM2 by siRNA or inhibition of PKM2 by shikonin re-sensitized the cisplatin resistant T24 cells.
ChemoSen↑,
Necroptosis↑, shikonin kills the T24 cisplatin resistant cells by inducing necroptosis

2182- SK,  Cisplatin,    Shikonin inhibited glycolysis and sensitized cisplatin treatment in non-small cell lung cancer cells via the exosomal pyruvate kinase M2 pathway
- in-vitro, Lung, A549 - in-vitro, Lung, PC9 - in-vivo, NA, NA
tumCV↓, shikonin inhibited the viability, proliferation, invasion, and migration of NSCLC cells A549 and PC9, and induced apoptosis.
TumCP↓,
TumCI↓,
TumCMig↓,
Apoptosis↑,
PKM2↓, As the inhibitor of pyruvate kinase M2 (PKM2), a key enzyme in glycolysis, shikonin inhibited glucose uptake and the production of lactate
Glycolysis↓,
GlucoseCon↓,
lactateProd↓,
ChemoSen↑, In vivo chemotherapeutic assay showed that shikonin reduced the tumor volume and weight in NSCLC mice model and increased the sensitivity to cisplatin chemotherapy.
TumVol↓,
TumW↓,
GLUT1↓, combination of shikonin and cisplatin downregulated the expression of PKM2 and its transcriptionally regulated downstream gene glucose transporter 1 (Glut1) in tumor tissue

2181- SK,    Shikonin and its analogs inhibit cancer cell glycolysis by targeting tumor pyruvate kinase-M2
- in-vitro, BC, MCF-7 - in-vitro, Lung, A549 - in-vitro, Cerv, HeLa
Glycolysis↓, Shikonin and alkannin significantly inhibited the glycolytic rate, as manifested by cellular lactate production and glucose consumption in drug-sensitive and resistant cancer cell lines
lactateProd↓,
GlucoseCon↓,
PKM2↓, shikonin and alkannin are the most potent and specific inhibitors to PKM2 reported so far
LDH∅, LDH was not inhibited by shikonin, alkannin and the analogs

2187- SK,  VitK3,    Shikonin, vitamin K3 and vitamin K5 inhibit multiple glycolytic enzymes in MCF-7 cells
- in-vitro, BC, MCF-7
Glycolysis↓, naphthaquinones, including shikonin, vitamin K3 and vitamin K5, have been proven to decrease the rate of glycolysis in cancer cells, which is partly due to suppressed pyruvate kinase activity.
PKM2↓,

1050- SK,    Shikonin improves the effectiveness of PD-1 blockade in colorectal cancer by enhancing immunogenicity via Hsp70 upregulation
- in-vitro, Colon, CT26
HSP70/HSPA5↑,
ROS↑, upregulation of Hsp70 was dependent on ROS induced by SK
PKM2↓,

1049- SK,    Shikonin inhibits immune checkpoint PD-L1 expression on macrophage in sepsis by modulating PKM2
- in-vivo, NA, NA
TNF-α↓,
IL6↓,
IFN-γ↓,
IL1β↓,
PD-L1↓, Shikonin significantly decreased PD-L1 expression on macrophages, not PD-1 expression on T cells in vivo and in vitro.
p‑PKM2↓,

2200- SK,    Shikonin inhibits the growth of anaplastic thyroid carcinoma cells by promoting ferroptosis and inhibiting glycolysis
- in-vitro, Thyroid, CAL-62 - in-vitro, Thyroid, 8505C
NF-kB↓, SKN inhibits the expression of NF-κB,GPX4,TXNRD1,PKM2,GLUT1.
GPx4↓,
TrxR1↓, TXNRD1
PKM2↓,
GLUT1↓,
Glycolysis↓, inhibiting glycolysis in ATC cells.
Ferroptosis↑, SKN in inducing intracellular ferroptosis
GlucoseCon↓, Measurements of glucose uptake after 1, 3, and 5 μM concentrations of SKN treatment for 24 h showed a decrease in both cells
lactateProd↓, Lactate production in the cells decreased with the rise of SKN treatment concentration
ROS↑, cellular ROS increased significantly with the rise in SKN concentration

2197- SK,    Shikonin derivatives for cancer prevention and therapy
- Review, Var, NA
ROS↑, This compound accumulates in the mitochondria, which leads to the generation of reactive oxygen species (ROS), and deregulates intracellular Ca2+ levels.
Ca+2↑,
BAX↑, shikonin alone by increasing the expression of the pro-apoptotic Bax protein and decreasing the expression of the anti-apoptotic Bcl2 protein
Bcl-2↓,
MMP9↓, This treatment also inhibited metastasis by decreasing the expression of MMP-9 and NF-kB p65 without affecting MMP-2 expression.
NF-kB↓,
PKM2↓, Figure 4
Hif1a↓,
NRF2↓,
P53↑,
DNMT1↓,
MDR1↓,
COX2↓,
VEGF↓,
EMT↓,
MMP7↓,
MMP13↓,
uPA↓,
RIP1↑,
RIP3↑,
Casp3↑,
Casp7↑,
Casp9↑,
P21↓,
DFF45↓,
TRAIL↑,
PTEN↑,
mTOR↓,
AR↓,
FAK↓,
Src↓,
Myc↓,
RadioS↑, shikonin acted as a radiosensitizer because of the high ROS production it induced.

2196- SK,    Research progress in mechanism of anticancer action of shikonin targeting reactive oxygen species
- Review, Var, NA
*ALAT↓, shikonin was found to mitigate the rise in ALT and AST levels triggered by LPS/GalN
*AST↓,
*Inflam?, demonstrated the anti-inflammatory properties of shikonin within two traditional mouse models frequently employed in pharmacological research to assess anti-inflammatory activities
*EMT↑, Shikonin stimulates EMT by weakening the nuclear translocation of NF-κB p65
ROS?, naphthoquinone framework possesses the capacity to produce ROS, which in turn modulate cellular oxidative stress levels
TrxR1↓, Duan and colleagues demonstrated that shikonin specifically inhibits the physiological function of TrxR1 by targeting its Sec residue
PERK↑, In vivo Western blot of HCT-15(colon cancer) xenografts showed shikonin upregulated PERK/eIF2α/ATF4/CHOP and IRE1α/JNK pathways.
eIF2α↑,
ATF4↑,
CHOP↑,
IRE1↑,
JNK↑,
eff↝, oral shikonin did not demonstrate anti-tumor effects in the colorectal cancer model, intraperitoneal injection significantly inhibited tumor growth.
DR5↑, upregulation of Death Receptor 5 (DR5) in cholangiocarcinoma cells through ROS-induced activation of the JNK signaling cascade.
Glycolysis↓, inhibited glycolysis in HepG2 cells by suppressing the activity of PKM2, a critical enzyme within the glycolytic pathway
PKM2↓,
ChemoSen↑, The combination of shikonin with drugs can reverse drug resistance and enhance therapeutic efficacy
GPx4↓, shikonin conjunction with cisplatin overcame drug resistance in cancer cells, downregulated GPX4, and upregulated haemoglobin oxygenase 1 (HMOX1) inducing iron death in cells.
HO-1↑,

2194- SK,    Efficacy of Shikonin against Esophageal Cancer Cells and its possible mechanisms in vitro and in vivo
- in-vitro, ESCC, Eca109 - in-vitro, ESCC, EC9706 - in-vivo, NA, NA
tumCV↓, Shikonin reduced esophageal cancer cells viability and induced cell cycle arrest and apoptosis.
TumCCA↑,
Apoptosis↑,
EGFR↓, Shikonin decreased EGFR, PI3K, p-AKT, HIF1α and PKM2 expression
PI3K↓,
Hif1a↓,
PKM2↓,
cycD1↓, shikonin reduced the expression of PKM2, HIF1α and cyclinD1 in tumor tissues
AntiTum↑, shikonin has a powerful antitumor effect in vivo.

2192- SK,    Shikonin Inhibits Tumor Growth of ESCC by suppressing PKM2 mediated Aerobic Glycolysis and STAT3 Phosphorylation
- in-vitro, ESCC, KYSE-510 - in-vitro, ESCC, Eca109 - in-vivo, NA, NA
TumCP↓, Shikonin effectively inhibited cell proliferation in dose-dependent and time-dependent manner compared with the control group
Glycolysis↓, detection of glycolysis showed that Shikonin suppressed the glucose consumption, lactate production, glycolytic intermediates and pyruvate kinase enzymatic activity.
GlucoseCon↓,
lactateProd↓,
PKM2↓,
p‑PKM2↓, decreased the expression of p-PKM2 and p-STAT3 in vivo
p‑STAT3↓,
GLUT1↓, Shikonin suppressed the expression of GLUT1 and HK2 proteins which are related to glycolysis.
HK2↓,
TumW↓, tumor weight in the Shikonin group decreased by approximately 40% compared with the vehicle control group,

2191- SK,    Shikonin Suppresses Skin Carcinogenesis via Inhibiting Cell Proliferation
- in-vitro, Melanoma, NA
PKM2↓, shikonin alone suppressed PKM2 activity
ATF4↓, Shikonin decreased the nuclear levels of ATF2 and knockdown of ATF2 suppressed the expression levels of Cdk4 and Fra-1
CDK4↓,
COX2↓, shikonin has been shown to inhibit TPA-induced cyclooxygenase-2 (COX-2) activation, which is mediated by suppression of MAPK signaling
MAPK↓,

2190- SK,    Shikonin exerts antitumor activity by causing mitochondrial dysfunction in hepatocellular carcinoma through PKM2-AMPK-PGC1α signaling pathway
- in-vitro, HCC, HCCLM3
TumCP↓, shikonin inhibited the proliferation, migration, and invasiveness of HCCLM3 cells, and promoted cell apoptosis in a dose-dependent manner
TumCMig↓,
TumCI↓,
Apoptosis↑,
MMP↓, shikonin affected mitochondrial function by disrupting mitochondrial membrane potential and oxidative stress (OS) status.
ROS↑,
OCR↓, shikonin decreased the oxygen consumption rate of HCCLM3 cells, as well as the levels of ATP and metabolites involved in the tricarboxylic acid cycle (TCA cycle)
ATP↓,
PKM2↓, Shikonin decreased the expression of PKM2 in the mitochondria

2189- SK,    PKM2 inhibitor shikonin suppresses TPA-induced mitochondrial malfunction and proliferation of skin epidermal JB6 cells
- in-vitro, Melanoma, NA
PKM2↓, shikonin suppressed the tumor promoter 12-O-tetradecanoylphorbol 13-acetate (TPA) induced neoplastic cell transformation and PKM2 activation in the early stage of carcinogenesis.
chemoP↑, results suggest that shikonin bears chemopreventive potential for human skin cancers in which PKM2 is upregulated,
eff↝, PKM2 activity was increased by 2.5-fold in tumor samples than normal tissues
lactateProd↓, Shikonin Suppressed TPA-Induced Lactate Production
ROS↑, shikonin induces apoptosis in hepatocellular carcinoma cells by the reactive oxygen species (ROS)/Akt and RIP1/NF-κB pathways
*ROS?, in our study, shikonin could preserve mitochondrial function and decrease the levels of ROS, leading to blocking PKM2 activation.
*PKM2↓,


* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 39

Results for Effect on Cancer/Diseased Cells:
Akt↓,3,   p‑Akt↓,1,   AntiCan↑,2,   AntiTum↑,2,   Apoptosis?,1,   Apoptosis↑,7,   AR↓,1,   ATF2↓,1,   ATF4↓,1,   ATF4↑,1,   ATP↓,5,   BAX↑,1,   Bcl-2↓,2,   BioAv↓,1,   Ca+2↑,2,   cardioP↑,1,   Casp3↑,2,   cl‑Casp3↓,1,   Casp7↑,1,   Casp9↑,1,   CDK4↓,1,   chemoP↑,1,   ChemoSen↑,4,   CHOP↑,1,   COX2↓,2,   cycD1↓,1,   Cyt‑c↑,1,   DFF45↓,1,   DNAdam↑,1,   DNMT1↓,1,   Dose↝,1,   DR5↑,1,   E-cadherin↑,1,   ECAR↓,1,   eff↓,1,   eff↑,1,   eff↝,2,   EGFR↓,2,   eIF2α↑,1,   EMT↓,2,   ERK↓,1,   p‑ERK↓,1,   FAK↓,2,   FASN↓,1,   Ferroptosis↑,1,   G6PD↓,1,   GlucoseCon↓,11,   GLUT1↓,6,   GLUT1∅,1,   GLUT3↓,1,   GLUT3∅,1,   Glycolysis↓,19,   GPx4↓,2,   GRP58↓,1,   GSH↓,2,   GTPBP4↓,1,   GutMicro↑,1,   H2O2↑,1,   Half-Life↝,1,   Hif1a↓,4,   HK1↓,1,   HK2↓,5,   HO-1↑,1,   HSP70/HSPA5↑,1,   IFN-γ↓,1,   IL1β↓,2,   IL6↓,2,   IRE1↑,1,   JNK↑,1,   p‑JNK↑,1,   lactateProd↓,17,   LC3B↑,1,   LDH↝,1,   LDH∅,1,   LDHA∅,1,   MAPK↓,1,   MDR1↓,1,   MMP↓,5,   MMP13↓,2,   MMP2↓,1,   MMP3↓,1,   MMP7↓,1,   MMP9↓,3,   MMPs↓,1,   mTOR↓,3,   Myc↓,1,   Necroptosis↑,3,   NF-kB↓,3,   NRF2↓,1,   OCR↓,1,   other↝,1,   OXPHOS⇅,1,   P21↓,1,   P21↑,1,   p‑p38↑,1,   P53↑,1,   cl‑PARP↑,1,   PD-L1↓,1,   PDH∅,1,   PDK1↓,1,   PERK↑,1,   PFK1↓,1,   PFK2↓,1,   PFKFB2↓,1,   PI3K↓,5,   PKM2↓,36,   PKM2∅,1,   p‑PKM2↓,2,   PTEN↑,1,   RadioS↑,1,   RIP1↓,1,   RIP1↑,2,   RIP3↓,1,   RIP3↑,2,   ROS?,1,   ROS↑,13,   selectivity↑,1,   SIRT2↑,1,   Src↓,2,   p‑STAT3↓,1,   TAMS↝,1,   TGF-β↓,2,   TIMP1↑,1,   TNF-α↓,2,   TRAIL↑,1,   TrxR↓,1,   TrxR1↓,3,   TumAuto↑,2,   TumCCA↑,2,   TumCG↓,3,   TumCI↓,5,   TumCMig↓,6,   TumCP↓,7,   tumCV↓,3,   TumMeta↓,1,   TumVol↓,2,   TumW↓,3,   uPA↓,1,   VEGF↓,1,   VM↓,1,   Warburg↓,3,  
Total Targets: 141

Results for Effect on Normal Cells:
AIM2↓,1,   ALAT↓,1,   antiOx↑,1,   Apoptosis↓,1,   AST↓,1,   BAX↓,1,   Bcl-2↑,1,   BioAv↓,1,   BioAv↑,2,   Casp1↓,1,   Catalase↑,1,   COX2↓,1,   eff↑,1,   p‑eIF2α↓,1,   EMT↑,1,   GPx↑,1,   Half-Life↝,1,   hepatoP↑,1,   HMGB1↓,1,   IL10↓,1,   IL17↓,1,   IL18↓,1,   IL1β↓,1,   IL6↓,1,   IL8↓,1,   Inflam?,1,   Inflam↓,2,   lactateProd↓,1,   motorD↑,1,   MPO↓,1,   neuroP↑,1,   NF-kB↑,1,   NLRP3↓,1,   other↑,1,   PKM2↓,3,   RenoP↑,1,   ROS?,1,   ROS↓,1,   Sepsis↓,1,   SOD↑,1,   STAT3↑,1,   TNF-α↓,2,  
Total Targets: 42

Scientific Paper Hit Count for: PKM2, Pyruvate Kinase, Muscle 2
39 Shikonin
2 Cisplatin
1 VitK3,menadione
Filter Conditions: Pro/AntiFlg:%  IllCat:%  CanType:%  Cells:%  prod#:150  Target#:772  State#:%  Dir#:%
  wNotes=on  sortOrder:rid,rpid

 

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