Chrysin / RadioS Cancer Research Results

CHr, Chrysin: Click to Expand ⟱
Features:
Chrysin is found in passion flower and honey. It is a flavonoid.
-To reach plasma levels that might more closely match the concentrations used in in vitro studies (typically micromolar), considerably high doses or advanced delivery mechanisms would be necessary.
Chrysin is widely summarized as modulating PI3K/Akt and MAPK pathways in cancer.

Chrysin — Chrysin is a naturally occurring flavone-class flavonoid found in honey, propolis, passionflower, and several plants. Its oncology relevance is mainly preclinical: it shows multi-pathway anticancer activity in cell and animal models, but native oral chrysin has very poor systemic bioavailability and no established approved oncology use.

Primary mechanisms (ranked):

  1. Suppression of PI3K/AKT survival signaling with downstream reduction in proliferation and survival programs.
  2. Induction of mitochondrial apoptosis through Bax/Bcl-2 shift, mitochondrial membrane potential loss, cytochrome c release, and caspase activation.
  3. Context-dependent ROS stress amplification in cancer cells, often linked to mitochondrial injury, ER stress, and apoptosis.
  4. ER stress / unfolded-protein-response activation leading to autophagy or stress-to-death coupling.
  5. Suppression of inflammatory, invasive, angiogenic, and metastatic signaling including NF-κB, MMPs, EMT, VEGF, and HIF-1α axes.
  6. Secondary antioxidant / NRF2-linked cytoprotection in some normal-cell or injury models, which is context-dependent and not necessarily anticancer-selective.

Bioavailability / PK relevance: Native oral chrysin has very poor systemic exposure because of low aqueous solubility, extensive intestinal/hepatic glucuronidation and sulfation, and efflux; human oral bioavailability has been reported as extremely low, often summarized as below 1%. Formulation strategies such as nanoparticles, lipid systems, micelles, cyclodextrins, or structural analogues are commonly proposed for systemic translation.

In-vitro vs systemic exposure relevance: Most anticancer studies use micromolar in-vitro concentrations that are unlikely to be reached in plasma after ordinary oral chrysin. Local intestinal exposure may be more plausible than systemic tumor exposure, but systemic anticancer claims should be treated as formulation-dependent.
LipoMicel may increase bioavailability

Clinical evidence status: Preclinical. Evidence is strong enough for mechanistic oncology interest in cell and animal models, including combination/sensitization studies, but there is no mature clinical oncology evidence establishing therapeutic benefit.

-Note half-life 2 hrs, BioAv very poor often <1%
Pathways:
Graphical Pathways

- may induce ROS production
- ROS↑ related: MMP↓(ΔΨm), ER Stress↑, UPR↑, GRP78↑, Ca+2↑, Cyt‑c↑, Caspases↑, DNA damage↑, cl-PARP↑, HSP↓
- May Lower AntiOxidant defense in Cancer Cells: NRF2↓, GSH↓ HO1↓
- May Raise 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↓, MMP2↓, MMP9↓, TIMP2, uPA↓, VEGF↓, ROCK1↓, FAK↓, RhoA↓, NF-κB↓, ERK↓
- reactivate genes thereby inhibiting cancer cell growth : HDAC↓, P53↑, HSP↓,
- cause Cell cycle arrest : TumCCA↑, cyclin D1↓, CDK2↓, CDK4↓,
- inhibits Migration/Invasion : TumCMig↓, TumCI↓, FAK↓, ERK↓, EMT↓, TOP1↓, TET1↓,
- inhibits glycolysis and ATP depletion : HIF-1α↓, cMyc↓, GLUT1↓, LDH↓, HK2↓, PDKs↓, HK2↓, GRP78↑, GlucoseCon↓
- inhibits angiogenesis↓ : VEGF↓, HIF-1α↓, Notch↓, PDGF↓, EGFR↓,
- Others: PI3K↓, AKT↓, STAT↓, Wnt↓, AMPK↓, ERK↓, JNK, TrxR,
- Synergies: chemo-sensitization, chemoProtective, RadioSensitizer, Others(review target notes), Neuroprotective, Cognitive, Renoprotection, Hepatoprotective, CardioProtective,

- Selectivity: Cancer Cells vs Normal Cells

Chrysin Mechanistic Profile

Rank Pathway / Axis Cancer Cells Normal Cells TSF Primary Effect Notes / Interpretation
1 PI3K AKT survival signaling PI3K↓; AKT phosphorylation↓; survival signaling↓ ↔ R, G Growth and survival suppression Central hub mechanism reported across multiple tumor models; also supports chemosensitization.
2 Mitochondrial apoptosis MMP↓; Bax↑; Bcl-2↓; cytochrome c↑; caspase-9/3↑ ↔ or lower sensitivity R, G Intrinsic apoptosis execution One of the most consistent anticancer endpoints, usually downstream of stress and survival-pathway suppression.
3 Mitochondrial ROS stress ROS↑ (context-dependent); oxidative stress↑; lipid peroxidation↑ ROS↓ or antioxidant protection (context-dependent) P, R, G Stress amplification Direction is dose- and model-dependent; cancer models often show pro-oxidant stress, while normal injury models may show antioxidant behavior.
4 ER stress and UPR ER stress↑; GRP78↑; UPR↑; autophagy or apoptosis↑ ↔ R, G Stress-to-death coupling Important in several chrysin cancer models and in some drug-combination effects.
5 NF-κB inflammatory transcription NF-κB↓; COX-2↓; IL-6↓; TNF-α↓ Inflammatory injury signaling↓ R, G Anti-inflammatory and anti-survival signaling May contribute to reduced proliferation, invasion, and cytokine-driven tumor support.
6 Invasion EMT and MMPs EMT↓; MMP-2↓; MMP-9↓; uPA↓; migration↓; invasion↓ ↔ G Anti-invasive phenotype Mechanistically relevant for metastasis models but generally later and context-dependent.
7 Angiogenesis and HIF-1α VEGF signaling HIF-1α↓; VEGF↓; angiogenic output↓ ↔ G Anti-angiogenic support Reported in preclinical models; may overlap with oxidative stress and DNA damage response pathways.
8 Glycolysis and metabolic stress GLUT1↓; HK2↓; LDH↓; PDK1↓; lactate production↓; ATP↓ ↔ G Metabolic suppression Relevant but less central than apoptosis and survival signaling; strongest interpretation is model-dependent.
9 NRF2 antioxidant axis NRF2↓ or antioxidant defense↓ (model-dependent) NRF2↑; SOD↑; GSH↑; catalase↑ (context-dependent) R, G Context-dependent redox selectivity Potentially useful but also interpret carefully because NRF2 activation can be protective in normal cells and sometimes undesirable in cancer cells.
10 Chemosensitization and radiosensitization Drug-induced toxicity↑; apoptosis↑; resistance signaling↓ Chemoprotection reported in some injury models G Adjunct sensitization Promising preclinical adjunct signal, but not clinically established.
11 Clinical Translation Constraint Systemic exposure low after native oral dosing Dose and formulation constraints G Translation limitation Very poor oral bioavailability is the dominant practical constraint; formulation or local GI targeting is likely required.

Time-Scale Flag (TSF): P / R / G

  • P: 0–30 min (primary/physical–chemical effects; rapid signaling / phosphorylation shifts)
  • R: 30 min–3 hr (acute stress-response and redox signaling)
  • G: >3 hr (gene-regulatory adaptation and phenotype-level outcomes)
RadioS, RadioSensitizer: Click to Expand ⟱
Source:
Type:
A radiosensitizer is an agent that makes cancer cells more sensitive to the damaging effects of radiation therapy. By using a radiosensitizer, clinicians aim to enhance the effectiveness of radiation treatment by either increasing the damage incurred by tumor cells or by interfering with the cancer cells’ repair mechanisms. This can potentially allow for lower doses of radiation, reduced side effects, or improved treatment outcomes.
Pathways that help Radiosensitivity: downregulating HIF-1α, increase SIRT1, Txr

List of Natural Products with radiosensitizing properties:
-Curcumin:modulate NF-κB, STAT3 and has been shown in preclinical studies to enhance the effects of radiation by inhibiting cell survival pathways.
-Resveratrol:
-EGCG:
-Quercetin:
-Genistein:
-Parthenolide:

How radiosensitizers inhibit the thioredoxin (Trx) system in cellular contexts. Notable radiosensitizers, including:
-gold nanoparticles (GNPs),
-gold triethylphosphine cyanide ([Au(SCN) (PEt3)]),
-auranofin, ceria nanoparticles (CONPs),
-curcumin and its derivatives,
-piperlongamide,
-indolequinone derivatives,
-micheliolide,
-motexafin gadolinium, and
-ethane selenide selenidazole derivatives (SeDs)
Scientific Papers found: Click to Expand⟱
2804- CHr,  Rad,    Gamma-Irradiated Chrysin Improves Anticancer Activity in HT-29 Colon Cancer Cells Through Mitochondria-Related Pathway
- in-vitro, CRC, HT29
RadioS↑, enhancement of the anticancer effects of chrysin upon exposure to gamma irradiation
ROS↑, excessive production of included reactive oxygen species, the dissipation of the mitochondrial membrane potential, regulation of the B cell lymphoma-2 family, activation of caspase-9, 3, and cleavage of poly (adenosine diphosphate-ribose) polymerase.
MMP↓,
Casp3↑,
Casp9↑,
cl‑PARP↑,

6135- CHr,    Chrysin as a Multifunctional Therapeutic Flavonoid: Emerging Insights in Pathogenesis Management: A Narrative Review
- Review, Var, NA - Review, AD, NA
Inflam↓, various cancers has been demonstrated and it modulates cell signaling pathways, including inflammation, angiogenesis, apoptosis, autophagy, and the cell cycle.
angioG↓,
Apoptosis↑,
TumAuto↑,
TumCCA↑,
BioAv↓, Despite its promising pharmacological activities, the clinical utility of chrysin remains limited due to its poor bioavailability, low solubility, limited permeability, and rapid metabolism.
Half-Life↓,
BioAv↓, The oral bioavailability of chrysin has been reported to range from 0.003% to 0.02%, with a maximum plasma concentration between 12 and 64 nM
*ROS↓, The study reported that chrysin administration protected the kidneys and liver of rats from oxidative damage induced by chronic ethanol consumption
*hepatoP↑, Hepatoprotective Potential
*RenoP↑, The renal protective effect of chrysin was related to increasing the antioxidant enzyme activities and decreasing the regulation of serum renal toxicity markers.
TET1↑, chrysin meaningfully induced the expression of TET1 in GC cells.
MMP9↓, hrysin might contribute to its anticancer effects by regulating MMP-9 expression.
cMyc↓, Both c-Myc and Ki-67 expressions were found to be suppressed in the tumor tissues treated with chrysin and G1-treated tumor tissues
Ki-67↓,
CBR1↓, chrysin directly interacts with CBR1, inhibiting its enzymatic activity at both the molecular and cellular levels.
ROS↑, This inhibition led to elevated intracellular ROS levels, triggering ROS-dependent autophagy
ChemoSen↑, chrysin enhances pancreatic cancer cell sensitivity to gemcitabine by inducing ferroptosis death, both in vitro and in vivo
Bax:Bcl2↑, chrysin increased the Bax/Bcl-2 expression ratio in ATC cells following treatment
PUMA↑, PUMA and Notch-1 were activated, and Slug was inactivated by chrysin treatment
NOTCH1↑,
*AntiDiabetic↑, Anti-Diabetic Potential
*neuroP↑, Neuroprotective Effects
*GABA↑, treatment of chrysin improves levels of GABA, monoamines, glutamic acid, and their metabolites in three brain regions, while also inhibiting DNA fragmentation markers like 8-HdG as well as BDNF.
*DNAdam↓,
*BDNF↑,
*memory↑, protective effects of chrysin against memory impairments associated with hippocampal neurogenesis
*AGEs↓, figure 6
*Aβ↓,
*cardioP↑, Cardioprotective Effects
*AntiArt↑, Anti-Arthritis Potential
eff↑, combination potential was higher than apigenin or chrysin alone.
eff↑, combination of quercetin enhanced the toxic effects of chrysin on the cell lines
*eff↑, neuroprotective synergistic effects of chrysin and kaempferol revealed therapeutic potential in mitigating cerebral ischemi
RadioS↑, study reported that treatment of MDA-MB-231 cells with chrysin in combination with radiation therapy (RT) caused synergistic antitumor properties.
eff↑, the combination of metformin and chrysin demonstrated pronounced synergistic cytotoxic effects on cancer cells
ChemoSen↑, chrysin was combined with a low dose of cisplatin, the resulting growth inhibition was significantly enhanced.
eff↑, demonstrating greater potency than chrysin or silver nanoparticles alone [198].

6139- CHr,    Chrysin and its nanoformulations in cancer therapy: A systematic review of their radiosensitizing, phototherapy-enhancing potentials
- Review, Var, NA
RadioS↑, CHY and its NPs, when combined with radiotherapy (RT) and phototherapy(PT), generate singlet oxygen (¹O₂) and various reactive oxygen species (ROS), causing photooxidative damage, DNA injury, cell-cycle arrest often at the G1 phase, and apoptotic ce
PhotoS↑,
ROS↑,
DNAdam↑,
TumCCA↑,
TumCD↑,
selectivity↑, Conversely, CHY shows notable protective effects in normal cells by reducing oxidative stress, neuroinflammation, and DNA damage through restoring antioxidant defenses, lowering lipid peroxidation, and maintaining neuronal integrity
*ROS↓,
*Inflam↓,
*DNAdam↓,
*antiOx↑,
*lipid-P↓,
*BioAv↑, new developments in CHY-based nanocarrier systems that enhance bioavailability and treatment accuracy, providing a focused view not found in previous reviews of CHY or flavonoids.
eff↑, CHY-derived copper NPs (CuNPs) enhanced the effects of low-dose γ-irradiation in Swiss albino mice bearing Ehrlich tumors and in MCF-7 breast cancer cells
GSH↓, Combined treatment reduced GSH, catalase (CAT), alanine aminotransferase (ALT), creatinine (Cr), and Ca²⁺ levels while increasing MDA levels, indicating intensified oxidative stress
Catalase↓,
ALAT↓,
Ca+2↓,
MDA↑,

2782- CHr,    Broad-Spectrum Preclinical Antitumor Activity of Chrysin: Current Trends and Future Perspectives
- Review, Var, NA - Review, Stroke, NA - Review, Park, NA
*antiOx↑, antioxidant, anti-inflammatory, hepatoprotective, neuroprotective
*Inflam↓, inhibitory effect of chrysin on inflammation and oxidative stress is also important in Parkinson’s disease
*hepatoP↑,
*neuroP↑,
*BioAv↓, Accumulating data demonstrates that poor absorption, rapid metabolism, and systemic elimination are responsible for poor bioavailability of chrysin in humans that, subsequently, restrict its therapeutic effects
*cardioP↑, cardioprotective [69], lipid-lowering effect [70]
*lipidLev↓,
*RenoP↑, Renoprotective
*TNF-α↓, chrysin reduces levels of pro-inflammatory cytokines, such as tumor necrosis factor-α (TNF-α) and interleukin-2 (IL-2).
*IL2↓,
*PI3K↓, induction of the PI3K/Akt signaling pathway by chrysin contributes to a reduction in oxidative stress and inflammation during cerebral I/R injury
*Akt↓,
*ROS↓,
*cognitive↑, Chrysin (25, 50, and 100 mg/kg) improves cognitive capacity, inflammation, and apoptosis to ameliorate traumatic brain injury
eff↑, chrysin and silibinin is beneficial in suppressing breast cancer malignancy via decreasing cancer proliferation
cycD1/CCND1↓, chrysin and silibinin induced cell cycle arrest via down-regulation of cyclin D1 and hTERT
hTERT/TERT↓,
VEGF↓, Administration of chrysin is associated with the disruption of hypoxia-induced VEGF gene expression
p‑STAT3↓, chrysin is capable of reducing STAT3 phosphorylation in hypoxic conditions without affecting the HIF-1α protein level.
TumMeta↓, chrysin is a potent agent in suppressing metastasis and proliferation of breast cancer cells during hypoxic conditions
TumCP↓,
eff↑, combination therapy of breast cancer cells using chrysin and metformin exerts a synergistic effect and is more efficient compared to chrysin alone
eff↑, combination of quercetin and chrysin reduced levels of pro-inflammatory factors, such as IL-1β, Il-6, TNF-α, and IL-10, via NF-κB down-regulation.
IL1β↓,
IL6↓,
NF-kB↓,
ROS↑, after chrysin administration, an increase occurs in levels of ROS that, subsequently, impairs the integrity of the mitochondrial membrane, leading to cytochrome C release and apoptosis induction
MMP↓,
Cyt‑c↑,
Apoptosis↑,
ER Stress↑, in addition to mitochondria, ER can also participate in apoptosis
Ca+2↑, Upon chrysin administration, an increase occurs in levels of ROS and cytoplasmic Ca2+ that mediate apoptosis induction in OC cells
TET1↑, In MKN45 cells, chrysin promotes the expression of TET1
Let-7↑, Chrysin is capable of promoting the expression of miR-9 and Let-7a as onco-suppressor factors in cancer to inhibit the proliferation of GC cells
Twist↓, Down-regulation of NF-κB, and subsequent decrease in Twist/EMT are mediated by chrysin administration, negatively affecting cervical cancer metastasis
EMT↓,
TumCCA↑, nduction of cell cycle arrest and apoptosis via up-regulation of caspase-3, caspase-9, and Bax are mediated by chrysin
Casp3↑,
Casp9↑,
BAX↑,
HK2↓, Chrysin administration (15, 30, and 60 mM) reduces the expression of HK-2 in hepatocellular carcinoma (HCC) cells to impair glucose uptake and lactate production.
GlucoseCon↓,
lactateProd↓,
Glycolysis↓, In addition to glycolysis metabolism impairment, the inhibitory effect of chrysin on HK-2 leads to apoptosis
SHP1↑, upstream modulator of STAT3 known as SHP-1 is up-regulated by chrysin
N-cadherin↓, Furthermore, N-cadherin and E-cadherin are respectively down-regulated and up-regulated upon chrysin administration in inhibiting melanoma invasion
E-cadherin↑,
UPR↑, chrysin substantially diminishes survival by ER stress induction via stimulating UPR, PERK, ATF4, and elF2α
PERK↑,
ATF4↑,
eIF2α↑,
RadioS↑, Irradiation combined with chrysin exerts a synergistic effect
NOTCH1↑, Irradiation combined with chrysin exerts a synergistic effect
NRF2↓, in reducing Nrf2 expression, chrysin down-regulates the expression of ERK and PI3K/Akt pathways—leading to an increase in the efficiency of doxorubicin in chemotherapy
BioAv↑, chrysin at the tumor site by polymeric nanoparticles leads to enhanced anti-tumor activity, due to enhanced cellular uptake
eff↑, Chrysin- and curcumin-loaded nanoparticles significantly promote the expression of TIMP-1 and TIMP-2 to exert a reduction in melanoma invasion


Showing Research Papers: 1 to 4 of 4

* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 4

Pathway results for Effect on Cancer / Diseased Cells:


NA, unassigned ⓘ

CBR1↓, 1,  

Redox & Oxidative Stress ⓘ

Catalase↓, 1,   GSH↓, 1,   MDA↑, 1,   NRF2↓, 1,   ROS↑, 4,  

Mitochondria & Bioenergetics ⓘ

MMP↓, 2,  

Core Metabolism/Glycolysis ⓘ

ALAT↓, 1,   cMyc↓, 1,   GlucoseCon↓, 1,   Glycolysis↓, 1,   HK2↓, 1,   lactateProd↓, 1,  

Cell Death ⓘ

Apoptosis↑, 2,   BAX↑, 1,   Bax:Bcl2↑, 1,   Casp3↑, 2,   Casp9↑, 2,   Cyt‑c↑, 1,   hTERT/TERT↓, 1,   PUMA↑, 1,   TumCD↑, 1,  

Transcription & Epigenetics ⓘ

PhotoS↑, 1,  

Protein Folding & ER Stress ⓘ

eIF2α↑, 1,   ER Stress↑, 1,   PERK↑, 1,   UPR↑, 1,  

Autophagy & Lysosomes ⓘ

TumAuto↑, 1,  

DNA Damage & Repair ⓘ

DNAdam↑, 1,   cl‑PARP↑, 1,  

Cell Cycle & Senescence ⓘ

cycD1/CCND1↓, 1,   TumCCA↑, 3,  

Proliferation, Differentiation & Cell State ⓘ

EMT↓, 1,   Let-7↑, 1,   NOTCH1↑, 2,   SHP1↑, 1,   p‑STAT3↓, 1,  

Migration ⓘ

Ca+2↓, 1,   Ca+2↑, 1,   E-cadherin↑, 1,   Ki-67↓, 1,   MMP9↓, 1,   N-cadherin↓, 1,   TET1↑, 2,   TumCP↓, 1,   TumMeta↓, 1,   Twist↓, 1,  

Angiogenesis & Vasculature ⓘ

angioG↓, 1,   ATF4↑, 1,   VEGF↓, 1,  

Immune & Inflammatory Signaling ⓘ

IL1β↓, 1,   IL6↓, 1,   Inflam↓, 1,   NF-kB↓, 1,  

Drug Metabolism & Resistance ⓘ

BioAv↓, 2,   BioAv↑, 1,   ChemoSen↑, 2,   eff↑, 9,   Half-Life↓, 1,   RadioS↑, 4,   selectivity↑, 1,  

Clinical Biomarkers ⓘ

ALAT↓, 1,   hTERT/TERT↓, 1,   IL6↓, 1,   Ki-67↓, 1,  
Total Targets: 65

Pathway results for Effect on Normal Cells:


NA, unassigned ⓘ

AntiArt↑, 1,  

Redox & Oxidative Stress ⓘ

antiOx↑, 2,   lipid-P↓, 1,   ROS↓, 3,  

Core Metabolism/Glycolysis ⓘ

lipidLev↓, 1,  

Cell Death ⓘ

Akt↓, 1,  

DNA Damage & Repair ⓘ

DNAdam↓, 2,  

Proliferation, Differentiation & Cell State ⓘ

PI3K↓, 1,  

Immune & Inflammatory Signaling ⓘ

IL2↓, 1,   Inflam↓, 2,   TNF-α↓, 1,  

Synaptic & Neurotransmission ⓘ

BDNF↑, 1,   GABA↑, 1,  

Protein Aggregation ⓘ

AGEs↓, 1,   Aβ↓, 1,  

Drug Metabolism & Resistance ⓘ

BioAv↓, 1,   BioAv↑, 1,   eff↑, 1,  

Functional Outcomes ⓘ

AntiDiabetic↑, 1,   cardioP↑, 2,   cognitive↑, 1,   hepatoP↑, 2,   memory↑, 1,   neuroP↑, 2,   RenoP↑, 2,  
Total Targets: 25

Scientific Paper Hit Count for: RadioS, RadioSensitizer
4 Chrysin
1 Radiotherapy/Radiation
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#:61  Target#:1107  State#:%  Dir#:%
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