Honokiol / toxicity Cancer Research Results

HNK, Honokiol: Click to Expand ⟱
Features:
Honokiol is a Lignan isolated from bark, seed cones and leaves of trees of Magnolia species. Honokiol was traditionally used for anxiety and stroke treatment, as well as the alleviation of flu symptoms.
-considered to have antioxidant properties
-low oral bioavailability and difficulty in intravenous administration
-the development of various formulations of honokiol, including microemulsion, liposomes, nanoparticles and micelle copolymers have successfully solved the problem of low water solubility.

Pathways:
-Inhibit NF-κB activation
-Downregulate STAT3 signalin
-Inhibiting the PI3K/Akt pathway,
-Inhibition of mTOR
-Influences various MAPK cascades—including ERK, JNK, and p38
-Inhibition of EGFR
-Inhibiting Notch pathway (CSCs)
-GPx4 inhibit
-Can induce ER stress in cancer cells, which contributes to the activation of unfolded protein response (UPR) pathways
-Disrupt the mitochondrial membrane potential in cancer cells.
-Reported to increase ROS production in cancer cells
-Can exhibit antioxidant properties in normal cells. - has some inhibitor activity but Not classified as HDAC inhibitor as weaker and may work more indirectly.
- is well-known in the research community for its role in activating SIRT3

-Note half-life 40–60 minutes
BioAv
Pathways:
- induce ROS production in cancer cells, and typically lowers ROS in normal cells
- ROS↑ related: MMP↓(ΔΨm), ER Stress↑, GRP78↑, Ca+2↑, Cyt‑c↑, Caspases↑, DNA damage↑, cl-PARP↑, HSP↓ Prx
- Raises AntiOxidant defense in Normal Cells: ROS↓, NRF2↑, SOD↑, GSH↑, Catalase↑,
- lowers Inflammation : NF-kB↓, COX2↓, Pro-Inflammatory Cytokines : IL-1β↓, TNF-α↓, IL-6↓,
- inhibit Growth/Metastases : TumMeta↓, TumCG↓, EMT↓, MMPs↓, MMP2↓, MMP9↓, VEGF↓, ROCK1↓, RhoA↓, NF-κB↓, CXCR4↓, ERK↓
- reactivate genes thereby inhibiting cancer cell growth : HDAC↓, EZH2↓, P53↑, HSP↓,
- cause Cell cycle arrest : TumCCA↑, cyclin D1↓, cyclin E↓, CDK2↓, CDK4↓, CDK6↓,
- inhibits Migration/Invasion : TumCMig↓, TumCI↓, ERK↓, EMT↓,
- inhibits glycolysis and ATP depletion : HIF-1α↓, cMyc↓, GLUT1↓, LDH↓, LDHA↓, HK2↓, PDKs↓, ECAR↓, OXPHOS↓, GRP78↑, GlucoseCon↓
- inhibits angiogenesis↓ : VEGF↓, HIF-1α↓, Notch↓, EGFR↓,
- inhibits Cancer Stem Cells : CSC↓, CD133↓, β-catenin↓, sox2↓, nestin↓, OCT4↓,
- Others: PI3K↓, AKT↓, JAK↓, STAT↓, Wnt↓, β-catenin↓, AMPK, ERK↓, JNK, TrxR**, - Shown to modulate the nuclear translocation of SREBP-2 (related to cholesterol).
- Synergies: chemo-sensitization, chemoProtective, RadioSensitizer, RadioProtective, Others(review target notes), Neuroprotective, Cognitive, Renoprotection, Hepatoprotective, CardioProtective,

- Selectivity: Cancer Cells vs Normal Cells

Rank Pathway / Axis Cancer Cells Normal Cells Label Primary Interpretation Notes
1 Mitochondrial integrity / intrinsic apoptosis ↓ ΔΨm; ↑ cytochrome-c release; ↑ caspases ↔ largely preserved Driver Mitochondria-directed cytotoxicity Honokiol directly accumulates in mitochondria and initiates intrinsic apoptosis in cancer cells
2 Reactive oxygen species (ROS) ↑ ROS (secondary, stress-amplifying) ↔ buffered Secondary Mitochondrial stress amplification ROS elevation follows mitochondrial perturbation rather than acting as the initiating trigger
3 STAT3 signaling ↓ STAT3 activation ↔ minimal Driver Loss of survival and stemness signaling STAT3 suppression contributes to apoptosis, CSC targeting, and reduced proliferation
4 PI3K → AKT → mTOR axis ↓ AKT / ↓ mTOR ↔ adaptive suppression Secondary Growth and anabolic inhibition AKT/mTOR inhibition reinforces mitochondrial and apoptotic stress
5 NF-κB signaling ↓ NF-κB activation ↓ inflammatory NF-κB tone Secondary Suppression of survival transcription NF-κB inhibition contributes to chemosensitization and anti-inflammatory effects
6 Cell cycle regulation ↑ G0/G1 or G2/M arrest ↔ spared Phenotypic Cytostatic growth control Cell-cycle arrest reflects upstream signaling disruption
7 Autophagy ↑ autophagy (context-dependent) ↑ adaptive autophagy Adaptive Stress response vs death cooperation Autophagy may precede apoptosis or act as a transient survival response


toxicity, toxicity: Click to Expand ⟱
Source:
Type:
Toxicity
Scientific Papers found: Click to Expand⟱
2885- HNK,    Honokiol: a novel natural agent for cancer prevention and therapy
NF-kB↓, Honokiol targets multiple signaling pathways including nuclear factor kappa B (NF-κB), signal transducers and activator of transcription 3 (STAT3), epidermal growth factor receptor (EGFR) and mammalian target of rapamycin (m-TOR)
STAT3↓,
EGFR↓,
mTOR↓,
BioAv↝, honokiol has revealed a desirable spectrum of bioavailability after intravenous administration in animal models, thus making it a suitable agent for clinical trials
Inflam↓, inflammation, proliferation, angiogenesis, invasion and metastasis.
TumCP↓,
angioG↓,
TumCI↓,
TumMeta↓,
cSrc↓, STAT3 inhibition by honokiol has also been correlated with the repression of upstream protein tyrosine kinases c-Src, JAK1 and JAK2
JAK1↓,
JAK2↓,
ERK↓, by inhibiting ERK and Akt pathways (31) or by upregulation of PTEN
Akt↓,
PTEN↑,
ChemoSen↑, Chemopreventive/ chemotherapeutic effects of honokiol in various malignancies: preclinical studies
chemoP↑,
COX2↓, honokiol was found to inhibit UVB-induced expression of cyclooxygenase-2, prostaglandin E2, proliferating cell nuclear antigen and pro-inflammatory cytokines, such as TNF-α, interleukin (IL)-1β and IL-6 in the skin
PGE2↓,
TNF-α↓,
IL1β↓,
IL6↓,
Casp3↑, release of caspases-3, -8 and -9as well as poly (ADP-ribose) polymerase (PARP) cleavage and p53 activation upon honokiol treatment that led to DNA fragmentation
Casp8↑,
Casp9↑,
cl‑PARP↑,
DNAdam↑,
Cyt‑c↑, translocation of cytochrome c to cytosol in human melanoma cell lines
RadioS↑, liposomal honokiol for 24 h showed a higher radiation enhancement ratio (~ two-fold) as compared to the radiation alone,
RAS↓, Honokiol also caused suppression of Ras activation
BBB↑, honokiol could effectively cross BBB and BCSFB and inhibit brain tumor growth
BioAv↓, Due to the concerns about poor aqueous solubility, liposomal formulations of honokiol have been developed and tested for their pharmacokinetics
Half-Life↝, In another comparative study, plasma honokiol concentrations was maintained above 30 and 10 μg/mL for 24 and 48 hours, respectively, in liposomal honokiol-treated mice, whereas it fell quickly (less than 5 μg/mL) by 12 hours in free honokiol-treated
Half-Life↝, free honokiol has poor GIT absorption, bio-transformed in liver to mono-glucuronide honokiol and sulphated mono-hydroxyhonokiol, ~ 50% is secreted in bile, ~ 60-65% plasma protein bound with elimination half life of (t1/2) of 49.05 – 56.24 minutes.
toxicity↓, These studies suggest that honokiol either alone or as a part of magnolia bark extract does not induce toxicity in animal models and thus could be clinically safe

2891- HNK,    Honokiol, an Active Compound of Magnolia Plant, Inhibits Growth, and Progression of Cancers of Different Organs
- Review, Var, NA
AntiCan↑, honokiol possesses anti-carcinogenic, anti-inflammatory, anti-oxidative, anti-angiogenic as well as inhibitory effect on malignant transformation of papillomas to carcinomas in vitro and in vivo animal models without any appreciable toxicity.
Inflam↓,
antiOx↑,
selectivity↑,
*toxicity↓,
cycD1/CCND1↓, honokiol resulted in inhibition of UVB-induced expression levels of cyclins (cyclins D1, D2, and E) and CDKs in skin tumors
cycE/CCNE↓,
CDK2↓,
CDK4↓,
TumMeta↓, Honokiol Inhibits Metastatic Potential of Melanoma Cells
NADPH↓, Honokiol not only reduces the NADPH oxidase activity
MMP2↓, honokiol treatment reduces the expression of MMP-2 and MMP-9
MMP9↓,
p‑mTOR↓, honokiol caused significant downregulation of mTOR phosphorylation
EGFR↓, honokiol decreases the expression levels of total EGFR
EMT↓, honokiol effectively inhibits EMT in breast cancer cells
SIRT1↑, onokiol increases the expressions of SIRT1 and SIRT3,
SIRT3↑,
EZH2↓, depletion of EZH2 by honokiol treatment inhibited cell proliferation
Snail↓, significantly down regulates Snail, vimentin, N-cadherin expression, and upregulates cytokeratin-18 and E-cadherin expression
Vim↓,
N-cadherin↓,
E-cadherin↑,
COX2↓, honokiol as an inhibitor of COX-2 expression
NF-kB↓, inhibited transcriptional activity of NF-jB,
*ROS↓, Inhibition of UVR-induced inflammatory mediators as well as ROS by honokiol treatment contributes to the prevention of UVR-induced skin tumor development
Ca+2↑, excessive influx of cytosolic calcium ion into the mitochondria triggers dysfunction of the mitochon- drial membrane permeabilization with mitochondrial ROS induction
ROS↑,

2871- HNK,    Antihyperalgesic Properties of Honokiol in Inflammatory Pain Models by Targeting of NF-κB and Nrf2 Signaling
- in-vivo, Nor, NA
*TNF-α↓, honokiol significantly reduced the expression levels of tumor necrosis factor (TNF-α), interleukin-1β (IL-1β), interleukin-6 (IL-6), and vascular endothelial growth factor (VEGF).
*IL1β↓,
*IL6↓,
*VEGF↓,
*NRF2↑, honokiol was also found to potentiate the expression of nuclear factor erythroid 2–related factor 2 (Nrf2), superoxide dismutase 2 (SOD2), and heme oxygenase-1 (HO-1) levels.
*SOD2↑,
*HO-1↑,
*Inflam↓, honokiol reduced the inflammation
*Pain↓, honokiol might be a promising candidate as a new treatment for pain. results showed that honokiol remarkably reduced pain response throughout the chronic inflammatory pain model
*NO↓, Honokiol significantly reduced NO production after 6 days of treatment
toxicity↓, Treating mice with honokiol for 6 days showed no visible sign of toxicity or ill health. Obtained values, which were used as an indicator of liver and renal function, are shown in the table

2865- HNK,    Liposomal Honokiol induces ROS-mediated apoptosis via regulation of ERK/p38-MAPK signaling and autophagic inhibition in human medulloblastoma
- in-vitro, MB, DAOY - vitro+vivo, NA, NA
BioAv↓, poor water solubility of HNK results in its low bioavailability, thus limiting its wide use in clinical cancer treatments
BioAv↓, Liposomes can overcome this limitation, and liposomal HNK (Lip-HNK) has promising clinical applications in this aspect
TumCP↓, increased Lip-HNK concentration could inhibit the proliferation of DAOY and D283 cells, without exerting effects on the growth of non-tumor cells
selectivity↑,
P53↑, P53 and P21 proteins (inhibiting cell cycle progression) was increased
P21↑,
CDK4↓, Lip-HNK also downregulated the expression of CDK4 and cyclin D1
cycD1/CCND1↓,
mtDam↑, Lip-HNK caused apoptosis and death, which, in turn, led to the failure of mitochondrial membrane function
ROS↑, Lip-HNK induced ROS production, which, as hypothesized, was blocked by the ROS scavenger NAC
eff↓, Lip-HNK induced ROS production, which, as hypothesized, was blocked by the ROS scavenger NAC
Casp3↑, caspase-3 sectioned and the Bax protein level increased by Lip-HNK
BAX↑,
LC3II↑, LC3BII protein in the Lip-HNK-treated group was noticeably elevated
Beclin-1↑, Beclin-1 (BECN), Atg7 proteins, and LC3BII were dramatically upregulated in the Lip-HNK-treated cells
ATG7↑,
p62↑, Lip-HNK treatment remarkably increased p62 expression, which was dose-dependent
eff↑, Lip-HNK treatment (20 mg/kg) drastically inhibited tumor growth. The combined treatment of Lip-HNK, Chloroquine , and Carboplatin showed more superior antitumor effects
ChemoSen↑, Lip-HNK alone or combined with chemotherapy (Carboplatin or Etoposide) causes significant regression of orthotopic xenografts
*toxicity↓, We also found that Lip-HNK did not damage the liver and kidney

4521- MAG,  HNK,    Safety and Toxicology of Magnolol and Honokiol
- Review, Nor, NA
*antiOx↑, still widely employed as herbal preparations for their sedative, antioxidant, anti-inflammatory, antibiotic, and antispastic effects.
*Inflam↓,
*Bacteria↓,
*toxicity↓, intervention trials employing concentrated MBE for up to 1 y did not report adverse effects

4526- MAG,  HNK,    Targeting apoptosis pathways in cancer with magnolol and honokiol, bioactive constituents of the bark of Magnolia officinalis
- Review, Var, NA
*antiOx↑, anti-oxidative, anti-inflammatory, anti-tumor, and anti-microbial properties, without appreciable toxicity.
*Inflam↓,
*Bacteria↓,
*toxicity↓,
AntiTum↑, Magnolol and honokiol were found to possess anti-tumor activity by targeting the apoptosis pathways, which have been considered as targets for cancer therapies.
Apoptosis↑,
DR5↝, including the death receptor mediated pathway, mitochondria-mediated pathway, caspase-mediated common pathway, and regulation of apoptosis-related proteins.


Showing Research Papers: 1 to 6 of 6

* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 6

Pathway results for Effect on Cancer / Diseased Cells:


Redox & Oxidative Stress ⓘ

antiOx↑, 1,   ROS↑, 2,   SIRT3↑, 1,  

Mitochondria & Bioenergetics ⓘ

mtDam↑, 1,  

Core Metabolism/Glycolysis ⓘ

ATG7↑, 1,   NADPH↓, 1,   SIRT1↑, 1,  

Cell Death ⓘ

Akt↓, 1,   Apoptosis↑, 1,   BAX↑, 1,   Casp3↑, 2,   Casp8↑, 1,   Casp9↑, 1,   Cyt‑c↑, 1,   DR5↝, 1,  

Kinase & Signal Transduction ⓘ

cSrc↓, 1,  

Transcription & Epigenetics ⓘ

EZH2↓, 1,  

Autophagy & Lysosomes ⓘ

Beclin-1↑, 1,   LC3II↑, 1,   p62↑, 1,  

DNA Damage & Repair ⓘ

DNAdam↑, 1,   P53↑, 1,   cl‑PARP↑, 1,  

Cell Cycle & Senescence ⓘ

CDK2↓, 1,   CDK4↓, 2,   cycD1/CCND1↓, 2,   cycE/CCNE↓, 1,   P21↑, 1,  

Proliferation, Differentiation & Cell State ⓘ

EMT↓, 1,   ERK↓, 1,   mTOR↓, 1,   p‑mTOR↓, 1,   PTEN↑, 1,   RAS↓, 1,   STAT3↓, 1,  

Migration ⓘ

Ca+2↑, 1,   E-cadherin↑, 1,   MMP2↓, 1,   MMP9↓, 1,   N-cadherin↓, 1,   Snail↓, 1,   TumCI↓, 1,   TumCP↓, 2,   TumMeta↓, 2,   Vim↓, 1,  

Angiogenesis & Vasculature ⓘ

angioG↓, 1,   EGFR↓, 2,  

Barriers & Transport ⓘ

BBB↑, 1,  

Immune & Inflammatory Signaling ⓘ

COX2↓, 2,   IL1β↓, 1,   IL6↓, 1,   Inflam↓, 2,   JAK1↓, 1,   JAK2↓, 1,   NF-kB↓, 2,   PGE2↓, 1,   TNF-α↓, 1,  

Drug Metabolism & Resistance ⓘ

BioAv↓, 3,   BioAv↝, 1,   ChemoSen↑, 2,   eff↓, 1,   eff↑, 1,   Half-Life↝, 2,   RadioS↑, 1,   selectivity↑, 2,  

Clinical Biomarkers ⓘ

EGFR↓, 2,   EZH2↓, 1,   IL6↓, 1,  

Functional Outcomes ⓘ

AntiCan↑, 1,   AntiTum↑, 1,   chemoP↑, 1,   toxicity↓, 2,  
Total Targets: 72

Pathway results for Effect on Normal Cells:


Redox & Oxidative Stress ⓘ

antiOx↑, 2,   HO-1↑, 1,   NRF2↑, 1,   ROS↓, 1,   SOD2↑, 1,  

Angiogenesis & Vasculature ⓘ

NO↓, 1,   VEGF↓, 1,  

Immune & Inflammatory Signaling ⓘ

IL1β↓, 1,   IL6↓, 1,   Inflam↓, 3,   TNF-α↓, 1,  

Clinical Biomarkers ⓘ

IL6↓, 1,  

Functional Outcomes ⓘ

Pain↓, 1,   toxicity↓, 4,  

Infection & Microbiome ⓘ

Bacteria↓, 2,  
Total Targets: 15

Scientific Paper Hit Count for: toxicity, toxicity
6 Honokiol
2 Magnolol
Query results interpretion may depend on "conditions" listed in the research papers.
Such Conditions may include : 
  -low or high Dose
  -format for product, such as nano of lipid formations
  -different cell line effects
  -synergies with other products 
  -if effect was for normal or cancerous cells

Filter Conditions: Pro/AntiFlg:%  IllCat:%  CanType:%  Cells:%  prod#:94  Target#:1025  State#:%  Dir#:1
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