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


GPx4, Glutathione Peroxidase 4: Click to Expand ⟱
Source:
Type:
GPX4 (Glutathione Peroxidase 4) is a selenoprotein that plays a crucial role in the regulation of ferroptosis, a form of programmed cell death characterized by the iron-dependent accumulation of lipid reactive oxygen species (ROS).
GPX4 has been found to be upregulated in several tumor types, promoting cancer cell survival and resistance to therapy. For instance, GPX4 overexpression has been observed in renal cell carcinoma, pancreatic ductal adenocarcinoma, and triple-negative breast cancer, among others. -GPX4 is known as a lipid peroxidation inhibitor protein, and its antioxidant effect is closely related to ferrous iron
Scientific Papers found: Click to Expand⟱
1284- SK,    Shikonin induces ferroptosis in multiple myeloma via GOT1-mediated ferritinophagy
- in-vitro, Melanoma, RPMI-8226 - in-vitro, Melanoma, U266
Ferroptosis↑, SHK treatment leads to the ferroptosis of MM cells
LDH↓,
ROS↑, Cellular mitochondrial lipid ROS also increased after SHK treatment
Iron↑,
lipid-P↑,
ATP↓, extracellular release of Adenosine 5’-triphosphate (ATP) and High mobility group protein B1 (HMGB1
HMGB1↓,
GPx4↓, Additionally, the ferroptosis markers GPX4 and solute carrier family 7 member 11 (xCT/SLC7A11) were downregulated at both the transcriptional and translational levels after SHK treatment
MDA↑, SHK treatment led to an increase in MDA content in cells. In contrast, the levels of SOD and GSH decreased in cells
SOD↓,
GSH↓,

2199- SK,    Induction of Ferroptosis by Shikonin in Gastric Cancer via the DLEU1/mTOR/GPX4 Axis
- in-vitro, GC, NA
ROS↑, Shikonin could induce reactive oxygen species (ROS), lipid ROS, intracellular ferrous iron (Fe2+), and malondialdehyde (MDA) in GC.
lipid-P↑,
Iron↑,
MDA↑,
GPx4↓, shikonin decreased the expression of GPX4 by suppressing GPX4 synthesis and decreasing ferritin.
Ferritin↓,
DLEU1↓, shikonin decreased DLEU1 expression in GC cells
mTOR↓, shikonin might decrease GPX4 levels by inhibiting the DLEU1/mTOR pathway.
Ferroptosis↑, shikonin-induced ferroptosis

2203- SK,    Shikonin suppresses small cell lung cancer growth via inducing ATF3-mediated ferroptosis to promote ROS accumulation
- in-vitro, Lung, NA
TumCP↓, shikonin effectively suppressed cell proliferation, apoptosis, migration, invasion, and colony formation and slightly induced apoptosis in SCLC cells
Apoptosis↓,
TumCMig↓,
TumCI↓,
Ferroptosis↑, shikonin could also induced ferroptosis in SCLC cells
ERK↓, Shikonin treatment effectively suppressed the activation of ERK, the expression of ferroptosis inhibitor GPX4, and elevated the level of 4-HNE, a biomarker of ferroptosis
GPx4↓,
4-HNE↑, elevated the level of 4-HNE, a biomarker of ferroptosis
ROS↑, ROS and lipid ROS were increased, while the GSH levels were decreased in SCLC cells after shikonin treatment.
GSH↓,
ATF3↑, shikonin activated ATF3 transcription by impairing the recruitment of HDAC1 mediated by c-myc on the ATF3 promoter, and subsequently elevating of histone acetylation
HDAC1↓,
ac‑Histones↑,

2202- SK,    Enhancing Tumor Therapy of Fe(III)-Shikonin Supramolecular Nanomedicine via Triple Ferroptosis Amplification
- in-vitro, Var, NA
Iron↑, After delivering into glutathione (GSH)-overexpressed tumor cells, FeShik will disassemble and release Fe2+ to induce cell death via ferroptosis.
Ferroptosis↑,
pH↝, GOx executes its catalytic activity to produce an acid environment and plenty of H2O2 for stimulating •OH generation via the Fenton reaction
H2O2↑,
ROS↑,
Fenton↑,
GSH↓, SRF will suppress the biosynthesis of GSH by inhibiting system Xc-, further deactivating the enzymatic activity of glutathione peroxidase 4 (GPX4).
GPx4↓,
lipid-P↑, Up-regulation of the oxidative stress level and down-regulation of GPX4 expression can dramatically accelerate the accumulation of lethal lipid peroxides, leading to ferroptosis amplification of tumor cells

2201- SK,    Shikonin promotes ferroptosis in HaCaT cells through Nrf2 and alleviates imiquimod-induced psoriasis in mice
- in-vitro, PSA, HaCaT - in-vivo, NA, NA
*eff↑, SHK treatment significantly improved imiquimod (IMQ)-induced psoriasis symptoms in mice
*IL6↓, attenuated the production of inflammatory cytokines, including interleukin (IL)-6, IL-17, and tumor necrosis factor-alpha (i.e., TNF-α)
*IL17↓,
*TNF-α↓,
*lipid-P↑, enhancing intracellular and mitochondrial ferrous and lipid peroxidation levels
*NRF2↓, by regulating expression of nuclear factor erythroid 2-related factor 2 (Nrf2), heme oxygenase-1 (HO-1), nuclear receptor coactivator 4 (NCOA4) and glutathione peroxidase 4 (GPX4)
*HO-1↝,
*NCOA4↝,
*GPx4↓, low dose SHK on LPS inhibited GPX4 and Nrf2 expression
*Ferroptosis↓, inhibited ferroptosis in psoriatic skin by reducing inflammation, ameliorating oxidative stress and iron accumulation.
*Inflam↓,
*ROS↓,
*Iron↓,

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

2198- SK,    Shikonin suppresses proliferation of osteosarcoma cells by inducing ferroptosis through promoting Nrf2 ubiquitination and inhibiting the xCT/GPX4 regulatory axis
- in-vitro, OS, MG63 - in-vitro, OS, 143B
TumCP↓, shikonin significantly suppressed OS cells proliferation and blocked the cell cycle progression in vitro.
TumCCA↑,
Ferroptosis↑, ferroptosis in OS cells by promoting the Fe2+ accumulation, reactive oxygen species and lipid peroxidation formation, malondialdehyde production and mitochondrial damage
Iron↑,
ROS↑,
lipid-P↑,
MDA↑,
mtDam↑,
NRF2↓, influenced Nrf2 stability via inducing ubiquitin degradation, which suppressed the expression of Nrf2 downstream targets xCT and GPX4, and led to stimulating ferroptosis. Promoted Nrf2 degradation
xCT↓,
GPx4↓,
GSH/GSSG↓, GSH/GSSG ratio declined after shikonin (1.5 uM) treatment
Keap1↑, shikonin (1.5 uM) significantly downregulated the expression of Nrf2 and upregulated the expression of Keap1

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↑,

2195- SK,    Shikonin induces ferroptosis in osteosarcomas through the mitochondrial ROS-regulated HIF-1α/HO-1 axis
- in-vitro, OS, NA
TumCP↓, At a low dose, Shikonin inhibits OS progression and has a excellent biosafety.
Ferroptosis↓, Shikonin induces ferroptosis in OS cel
Hif1a↑, Shikonin upregualtes HIF-1α/HO-1 axis to produce excess Fe2+ which leads to ROS accumulation on OS cell, followed by ferroptosis.
HO-1↑,
Iron↑,
ROS↑,
GSH/GSSG↓, while simultaneously reducing the GSH/GSSG ratio and GPX4 and SLC7A11 expression
GPx4↓,


* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 9

Results for Effect on Cancer/Diseased Cells:
4-HNE↑,1,   Apoptosis↓,1,   ATF3↑,1,   ATF4↑,1,   ATP↓,1,   ChemoSen↑,1,   CHOP↑,1,   DLEU1↓,1,   DR5↑,1,   eff↝,1,   eIF2α↑,1,   ERK↓,1,   Fenton↑,1,   Ferritin↓,1,   Ferroptosis↓,1,   Ferroptosis↑,6,   GlucoseCon↓,1,   GLUT1↓,1,   Glycolysis↓,2,   GPx4↓,8,   GSH↓,3,   GSH/GSSG↓,2,   H2O2↑,1,   HDAC1↓,1,   Hif1a↑,1,   ac‑Histones↑,1,   HMGB1↓,1,   HO-1↑,2,   IRE1↑,1,   Iron↑,5,   JNK↑,1,   Keap1↑,1,   lactateProd↓,1,   LDH↓,1,   lipid-P↑,4,   MDA↑,3,   mtDam↑,1,   mTOR↓,1,   NF-kB↓,1,   NRF2↓,1,   PERK↑,1,   pH↝,1,   PKM2↓,2,   ROS?,1,   ROS↑,7,   SOD↓,1,   TrxR1↓,2,   TumCCA↑,1,   TumCI↓,1,   TumCMig↓,1,   TumCP↓,3,   xCT↓,1,  
Total Targets: 52

Results for Effect on Normal Cells:
ALAT↓,1,   AST↓,1,   eff↑,1,   EMT↑,1,   Ferroptosis↓,1,   GPx4↓,1,   HO-1↝,1,   IL17↓,1,   IL6↓,1,   Inflam?,1,   Inflam↓,1,   Iron↓,1,   lipid-P↑,1,   NCOA4↝,1,   NRF2↓,1,   ROS↓,1,   TNF-α↓,1,  
Total Targets: 17

Scientific Paper Hit Count for: GPx4, Glutathione Peroxidase 4
9 Shikonin
Filter Conditions: Pro/AntiFlg:%  IllCat:%  CanType:%  Cells:%  prod#:150  Target#:643  State#:%  Dir#:%
  wNotes=on  sortOrder:rid,rpid

 

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