Database Query Results : Silymarin (Milk Thistle) silibinin, , CDK4

SIL, Silymarin (Milk Thistle) silibinin: Click to Expand ⟱

Features:

Silymarin (Milk Thistle) Flowering herb related to daisy and ragweed family.
Silibinin (INN), also known as silybin is the major active constituent of silymarin, a standardized extract of the milk thistle seeds.
-a flavonoid combination of 65–80% of seven flavolignans; the most important of these include silybin, isosilybin, silychristin, isosilychristin, and silydianin. Silybin is the most abundant compound in around 50–70% in isoforms silybin A and silybin B

-Note half-life 6hrs?.
BioAv not soluble in water, low bioAv (1%). 240mg yielded only 0.34ug/ml plasma level. oral administration of SM (equivalent to 120 mg silibinin), total (unconjugated + conjugated) silibinin concentration in plasma was 1.1–1.3 μg/mL, so can not achieve levels used in most in-vitro studies.
Pathways:
- results for both inducing and reducing ROS in cancer cells. In normal cell seems to consistently lower ROS. Reports show both ROS↑ and ROS↓ in cancer models; systemic pro-oxidant effects may require higher exposures than typical oral dosing, but local or combination contexts may differ. (level in GUT could be much higher (800uM).
- ROS↑ related: MMP↓(ΔΨm), Ca+2↑, Cyt‑c↑, Caspases↑, DNA damage↑, cl-PARP↑,
- Raises AntiOxidant defense in Normal Cells: ROS↓, NRF2↑, SOD↑, GSH↑, Catalase↑,
- lowers Inflammation : NF-kB↓, COX2↓, p38↓(context-dependent; often stress-activated), Pro-Inflammatory Cytokines : NLRP3↓, IL-1β↓, TNF-α↓, IL-6↓, IL-8↓
- inhibit Growth/Metastases : TumMeta↓, TumCG↓, EMT↓, MMPs↓, MMP2↓, MMP9↓, TIMP2, uPA↓, VEGF↓, FAK↓, NF-κB↓, CXCR4↓, TGF-β↓, α-SMA↓, ERK↓
- reactivate genes thereby inhibiting cancer cell growth : HDAC↓, DNMTs↓, P53↑, HSP↓,
- cause Cell cycle arrest : TumCCA↑, cyclin D1↓, cyclin E↓, CDK2↓, CDK4↓,
- inhibits Migration/Invasion : TumCMig↓, TumCI↓, TNF-α↓, FAK↓, ERK↓, EMT↓,
- inhibits glycolysis and ATP depletion : HIF-1α↓, PKM2↓, cMyc↓, GLUT1↓, LDH↓, LDHA↓, HK2↓, PFKs↓, GRP78↑(ER stress), Glucose↓, GlucoseCon↓
- inhibits angiogenesis↓ : VEGF↓, HIF-1α↓, Notch↓, PDGF↓, EGFR↓,
- inhibits Cancer Stem Cells : CSC↓, Hh↓, GLi1↓, β-catenin↓, Notch2↓, OCT4↓,
- Others: PI3K↓, AKT↓, JAK↓, STAT↓, Wnt↓, β-catenin↓, AMPK, ERK↓, JNK, - SREBP (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	TSF	Primary Effect	Notes / Interpretation
1	ROS / redox buffering + mitochondrial protection	Often ↑ stress susceptibility; can support apoptosis when survival signaling is blocked	↓ oxidative stress; mitochondrial protection	P, R, G	Context-selective redox modulation	Silymarin is classically cytoprotective/antioxidant in normal tissues (notably liver), while in tumors it can weaken pro-survival adaptation and increase vulnerability to stressors and therapy.
2	Intrinsic apoptosis (mitochondria → caspases)	↑ apoptosis signaling; ↑ caspase activation	↔ minimal activation	G	Cell death execution	Common downstream outcome in cancer models: apoptosis increases after earlier signaling/redox shifts and/or checkpoint disruption.
3	Cell-cycle control (cyclins/CDKs; checkpoints)	↑ arrest (G1/S or G2/M depending on model)	↔	G	Cytostasis	Typically observed as reduced proliferation with checkpoint engagement; timing usually later than kinase phosphorylation changes.
4	NF-κB inflammatory transcription	↓ NF-κB activity; ↓ inflammatory/pro-survival tone	↔ or protective anti-inflammatory effect	R, G	Anti-inflammatory / anti-survival transcription	NF-κB suppression can reduce tumor-promoting inflammation and blunt stress-adaptive survival programs.
5	JAK/STAT3 axis (incl. PD-L1 / immune escape programs in some models)	↓ STAT3 signaling (context); may ↓ PD-L1 in certain tumor contexts	↔	R, G	Reduced survival + immune-evasion signaling	Reported to attenuate STAT3-driven tumor programs and, in some contexts, reduce immune-suppressive signaling (model dependent).
6	PI3K → AKT → mTOR survival / growth signaling	↓ PI3K/AKT/mTOR signaling (context)	↔	R, G	Growth/survival suppression	Reduced PI3K/AKT/mTOR tone increases sensitivity to apoptosis and can reinforce cell-cycle arrest.
7	MAPK re-wiring (ERK/p38/JNK balance)	Stress-MAPK shifts; ERK tone often reduced or re-patterned	↔	P, R, G	Signal reprogramming	Early phosphorylation shifts can precede later gene-expression changes; exact ERK direction is model and dose dependent.
8	Angiogenesis (VEGF and angiogenic factors)	↓ VEGF / angiogenesis outputs	↔	G	Anti-angiogenic support	Typically reflected in reduced pro-angiogenic expression/secretion and angiogenesis-related phenotypes over longer windows.
9	EMT / invasion / migration programs (incl. TGF-β/Smad-associated EMT in some systems)	↓ EMT markers; ↓ migration/invasion	↔	G	Anti-invasive phenotype	Often presents as restoration of epithelial markers and suppression of migration/invasion assays; commonly a later phenotype-level outcome.
10	Xenobiotic handling (Phase I/II enzymes; cytoprotection / chemoprevention framing)	May alter carcinogen activation/detox balance	↑ detox / cytoprotection against xenobiotics	G	Chemopreventive protection	A key “dual strategy” theme: protection of normal tissue from toxins/therapy while modulating tumor response pathways.
11	Drug resistance / efflux (MDR phenotype; P-gp-related resistance in some models)	May ↓ functional MDR and ↑ chemo sensitivity (context)	↔	R, G	Chemo-sensitization support	Reported synergy with chemotherapy in resistant tumor settings; transporter direction can be context-specific, so present as “reported to reduce functional resistance” rather than a universal single-transporter claim.
12	Immune microenvironment signaling (cytokines / macrophage recruitment in some models)	May ↓ pro-tumor cytokine programs and recruitment signals (context)	↔	G	Anti-inflammatory tumor microenvironment shift	Immune-modulatory effects are increasingly discussed, but they are more model-dependent and typically show on longer time scales.

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

P: 0–30 min (primary/physical–chemical effects; rapid signaling / phosphorylation shifts)
R: 30 min–3 hr (redox signaling + acute stress-response signaling)
G: >3 hr (gene-regulatory adaptation and phenotype-level outcomes)

CDK4, Cyclin-dependent kinase 4: Click to Expand ⟱

Source:

Type:

Cyclin-dependent kinase 4 (CDK4) is a key regulator of the cell cycle, particularly in the transition from the G1 phase to the S phase. Its expression and activity are often altered in various cancers, contributing to tumorigenesis.
CDK4 is frequently overexpressed in various cancers, and its expression levels can serve as a prognostic marker.

Scientific Papers found: Click to Expand⟱

3323-

SIL,

Anticancer therapeutic potential of silibinin: current trends, scope and relevance

Review,

Var,

Inflam↓, Silibinin has been shown to have anti-inflammatory, anti-angiogenic, antioxidant, and anti-metastatic properties
angioG↓,
antiOx↑,
TumMeta↓,
TumCP↓, silibinin helps in preventing proliferation of the tumor cells, initiating the cell cycle arrest, and induce cancer cells to die
TumCCA↑,
TumCD↑,
α-SMA↓, figure
p‑Akt↓,
p‑STAT3↓,
COX2↓,
IL6↓,
MMP2↓,
HIF-1↓,
Snail↓,
Slug↓,
Zeb1↓,
NF-kB↓,
p‑EGFR↓,
JAK2↓,
PI3K↓,
PD-L1↓,
VEGF↓,
CDK4↓,
CDK2↓,
cycD1/CCND1↓,
E2Fs↓,

3648-

SIL,

Silymarin/Silybin and Chronic Liver Disease: A Marriage of Many Years

Review,

NA,

*antiOx↑, antioxidant, anti-inflammatory and antifibrotic power
*Inflam↓,
*lipid-P↓, reduce both lipid peroxidation and cellular necrosis.
*necrosis↓,
*hepatoP↑, silybin use in chronic liver diseases, cirrhosis and hepatocellular carcinoma.
*IL1↓, figure 1
*IL6↓,
*TNF-α↓,
*IFN-γ↓,
MAPK↓,
Apoptosis↑,
Cyt‑c↑,
Casp3↑,
Casp9↑,
*PPARγ↑,
*GLUT4↑,
*HSPs↓,
*HSP27↑,
*Trx↑,
*SIRT1↑,
*ALAT↓, as well as prevent ALT increase, Glutathione (GSH) decrease, lipid peroxidation and TNF-α increase
*GSH↑,
*lipid-P↓,
*TNF-α↓,
TumCG↓, silybin significantly reduces HuH7, HepG2, Hep3B, and PLC/PRF/5 human hepatoma cells growth by increasing cyclin-dependent kinase inhibitor p21 and p27/cyclin-dependent kinase (CDK) 4 complexes, by reducing retinoblastoma protein (Rb)-phosphorylatio
P21↑,
CDK4↑,

3290-

SIL,

A review of therapeutic potentials of milk thistle (Silybum marianum L.) and its main constituent, silymarin, on cancer, and their related patents

Analysis,

Var,

hepatoP↑, well as hepatoprotective agents.
chemoP↑, silymarin could be beneficial to oncology patients, especially for the treatment of the side effects of anticancer chemotherapeutics.
*lipid-P↓, Silymarin has been shown to significantly reduce lipid peroxidation and exhibit anti-oxidant, antihypertensive, antidiabetic, and hepatoprotective effects
*antiOx↑,
tumCV↓, reduces the viability, adhesion, and migration of tumor cells by induction of apoptosis and formation of reactive oxygen species (ROS), reducing glutathione levels, B-cell lymphoma 2 (Bcl-2), survivin, cyclin D1, Notch 1 intracellular domain (NICD),
TumCMig↓,
Apoptosis↑,
ROS↑,
GSH↓,
Bcl-2↓,
survivin↓,
cycD1/CCND1↓,
NOTCH1↓,
BAX↑, as well as enhancing the amount of Bcl-2-associated X protein (Bax) level (
NF-kB↓, The suppression of NK-κB-regulated gene products (e.g., cyclooxygenase-2 (COX-2), lipoxygenase (LOX), inducible nitric oxide synthase (iNOS), tumor necrosis factor (TNF), and interleukin-1 (IL-1)) mediates the anti-inflammatory effect of silymarin
COX2↓,
LOX1↓,
iNOS↓,
TNF-α↓,
IL1↓,
Inflam↓,
*toxicity↓, Silymarin is also safe for humans, hence at therapeutic doses patients demonstrated no negative effects at the high dose of 700 mg, three times a day, for 24 weeks
CXCR4↓, fig 2
EGFR↓,
ERK↓,
MMP↓, reduction in mitochondrial transmembrane potential due to an increase in cytosolic cytochrome complex (Cyt c) levels.
Cyt‑c↑,
TumCCA↑, Moreover, silymarin increased the percentage of cells in the gap 0/gap 1 (G0/G1) phase and decreased the percentage of cells in the synthesis (S)-phase,
RB1↑, concomitant up-regulation of retinoblastoma protein (Rb), p53, cyclin-dependent kinase inhibitor 1 (p21Cip1), and cyclin-dependent kinase inhibitor 1B (p27Kip1)
P53↑,
P21↑,
p27↑,
cycE/CCNE↓, and down-regulation of cyclin D1, cyclin E, cyclin-dependent kinase 4 (CDK4), and phospho-Rb
CDK4↓,
p‑pRB↓,
Hif1a↓, silibinin inhibited proliferation of Hep3B cells due to simultaneous induction of apoptosis and prevented the accumulation
cMyc↓, Silibinin also reduces cellular myelocytomatosis oncogene (c-MYC) expression, a key regulator of cancer metabolism in pancreatic cancer cells
IL1β↓, Silymarin can also inhibit the production of inflammatory cytokines, such as interleukin-1beta (IL-1β), interferon-gamma (IFNγ),
IFN-γ↓,
PCNA↓, ilymarin suppresses the high proliferative activity of cells started with a carcinogen so that it significantly inhibits proliferating cell nuclear antigen (PCNA) and cyclin D1 labeling indices
PSA↓, In another patent, S. marianum has been used as an estrogen receptor β-agonist and an inhibitor of PSA for treating prostate cancer
CYP1A1↓, Silymarin prevents the expression of CYP1A1 and COX-2

3282-

SIL,

Role of Silymarin in Cancer Treatment: Facts, Hypotheses, and Questions

Review,

NA,

hepatoP↑, This group of flavonoids has been extensively studied and they have been used as hepato-protective substances
AntiCan↑, however, silymarin compounds have clear anticancer effects
TumCMig↓, decreasing migration through multiple targeting, decreasing hypoxia inducible factor-1α expression, i
Hif1a↓, In prostate cancer cells silibinin inhibited HIF-1α translation
selectivity↑, antitumoral activity of silymarin compounds is limited to malignant cells while the nonmalignant cells seem not to be affected
toxicity∅, long history of silymarin use in human diseases without toxicity after prolonged administration.
*antiOx↑, as an antioxidant, by scavenging prooxidant free radicals
*Inflam↓, antiinflammatory effects similar to those of indomethacin,
TumCCA↑, MDA-MB 486 breast cancer cells, G1 arrest was found due to increased p21 and decreased CDKs activity
P21↑,
CDK4↓,
NF-kB↓, human prostate carcinoma cells, silymarin decreased ligand binding to Erb1 135 and NF-kB expression was strongly inhibited by silymarin in hepatoma cell
ERK↓, human prostate carcinoma cells, silymarin decreased ligand binding to Erb1 135 and NF-kB expression was strongly inhibited by silymarin in hepatoma cell
PSA↓, Treating prostate carcinoma cells with silymarin the levels of PSA were significantly decreased and cell growth was inhibited through decreased CDK activity and induction of Cip1/p21 and Kip1/p27. 1
TumCG↓,
p27↑,
COX2↓, such as anti-COX2 and anti-IL-1α activity, 140 antiangiogenic effects through inhibition of VEGF secretion, upregulation of Insulin like Growth Factor Binding Protein 3 (IGFBP3), 141 and inhibition of androgen receptors.
IL1↓,
VEGF↓,
IGFBP3↑,
AR↓,
STAT3↓, downregulation of the STAT3 pathway which was seen in many cell models.
Telomerase↓, silymarin has the ability to decrease telomerase activity in prostate cancer cells
Cyt‑c↑, mitochondrial cytochrome C release-caspase activation.
Casp↑,
eff↝, Malignant p53 negative cells show only minimal apoptosis when treated with silymarin. Therefore, one conclusion is that silymarin may be useful in tumors with conserved p53.
HDAC↓, inhibit histone deacetylase activity;
HATs↑, increase histone acetyltransferase activity
Zeb1↓, reduce expression of the transcription factor ZEB1
E-cadherin↑, increase expression of E-cadherin;
miR-203↑, increase expression of miR-203
NHE1↓, reduce activation of sodium hydrogen isoform 1 exchanger (NHE1)
MMP2↓, target β catenin and reduce the levels of MMP2 and MMP9
MMP9↓,
PGE2↓, reduce activation of prostaglandin E2
Vim↓, suppress vimentin expression
Wnt↓, inhibit Wnt signaling
angioG↓, Silymarin inhibits angiogenesis.
VEGF↓, VEGF downregulation
*TIMP1↓, Silymarin has the capacity to decrease TIMP1 expression166–168 in mice.
EMT↓, found that silibinin had no effect on EMT. However, the opposite was found in other malignant tissues160–162 where it showed inhibitory effects.
TGF-β↓, Silibinin reduces the expression of TGF β2 in different tumors such as triple negative breast, 174 prostate, and colorectal cancers.
CD44↓, Silibinin decreased CD44 expression and the activation of EGFR (epidermal growth factor receptor)
EGFR↓,
PDGF↓, silibinin had the ability to downregulate PDFG in fibroblasts, thus decreasing proliferation.
*IL8↓, Flavonoids, in general, reduce levels of IL-8. Curcumin, 200 apigenin, 201 and silybin showed the ability to decrease IL-8 levels
SREBP1↓, Silymarin inhibited STAT3 phosphorylation and decreased the expression of intranuclear sterol regulatory element binding protein 1 (SREBP1), decreasing lipid synthesis.
MMP↓, reduced membrane potential and ATP content
ATP↓,
uPA↓, silibinin decreased MMP2, MMP9, and urokinase plasminogen activator receptor level (uPAR) in neuroblastoma cells. uPAR is also a marker of cell invasion.
PD-L1↓, Silibinin inhibits PD-L1 by impeding STAT5 binding in NSCLC.
NOTCH↓, Silybin inhibited Notch signaling in hepatocellular carcinoma cells showing antitumoral effects
*SIRT1↑, Silymarin can also increase SIRT1 expression in other tissues, such as hippocampus, 221 articular chondrocytes, 222 and heart muscle
SIRT1↓, Silymarin seems to act differently in tumors: in lung cancer cells SIRT downregulated SIRT1 and exerted multiple antitumor effects such as reduced adhesion and migration and increased apoptosis.
CA↓, Silymarin has the ability to inhibit CA isoforms CA I and CA II.
Ca+2↑, ilymarin increases mitochondrial release of Ca++ and lowers mitochondrial membrane potential in cancer cell
chemoP↑, Silymarin: Decreasing Side Effects and Toxicity of Chemotherapeutic Drugs
cardioP↑, There is also evidence that it protects the heart from doxorubicin toxicity, however, it is less potent than quercetin in this effect.
Dose↝, oral administration of 240 mg of silybin to 6 healthy volunteers the following results were obtained 377 : maximum\,plasmaconcentration0.34±0.16⁢𝜇⁢g/m⁢L
Half-Life↝, and time to maximum plasma concentration 1.32 ± 0.45 h. Absorption half life 0.17 ± 0.09 h, elimination half life 6.32 ± 3.94 h
BioAv↓, silymarin is not soluble in water and oral administration shows poor absorption in the alimentary tract (approximately 1% in rats,
BioAv↓, Our conclusion is that, from a bioavailability standpoint, it is much easier to achieve migration inhibition, than proliferative reduction.
BioAv↓, Combination with succinate: is available on the market under the trade mark Legalon® (bis hemisuccinate silybin). Combination with phosphatidylcholine:
toxicity↝, 13 g daily per os divided into 3 doses was well tolerated. The most frequent adverse event was asymptomatic liver toxicity.
Half-Life↓, It may be necessary to administer 800 mg 4 times a day because the half-life is short.
ROS↓, its ability as an antioxidant reduces ROS production
FAK↓, Silibinin decreased human osteosarcoma cell invasion through Erk inhibition of a FAK/ERK/uPA/MMP2 pathway

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

Pathway results for Effect on Cancer / Diseased Cells:

Pathway results for Effect on Normal Cells:

Redox & Oxidative Stress ⓘ

antiOx↑, 3, GSH↑, 1, lipid-P↓, 3, Trx↑, 1,

Core Metabolism/Glycolysis ⓘ

ALAT↓, 1, PPARγ↑, 1, SIRT1↑, 2,

Cell Death ⓘ

necrosis↓, 1,

Protein Folding & ER Stress ⓘ

HSP27↑, 1, HSPs↓, 1,

Migration ⓘ

TIMP1↓, 1,

Barriers & Transport ⓘ

GLUT4↑, 1,

Immune & Inflammatory Signaling ⓘ

IFN-γ↓, 1, IL1↓, 1, IL6↓, 1, IL8↓, 1, Inflam↓, 2, TNF-α↓, 2,

Clinical Biomarkers ⓘ

ALAT↓, 1, IL6↓, 1,

Functional Outcomes ⓘ

hepatoP↑, 1, toxicity↓, 1,
Total Targets: 22

Scientific Paper Hit Count for: CDK4, Cyclin-dependent kinase 4

4 Silymarin (Milk Thistle) silibinin

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#:154  Target#:894  State#:%  Dir#:%
  wNotes=on  sortOrder:rid,rpid

Database Query Results : Silymarin (Milk Thistle) silibinin, , CDK4

Pathway results for Effect on Cancer / Diseased Cells:

Redox & Oxidative Stress ⓘ

Mitochondria & Bioenergetics ⓘ

Core Metabolism/Glycolysis ⓘ

Cell Death ⓘ

Transcription & Epigenetics ⓘ

DNA Damage & Repair ⓘ

Cell Cycle & Senescence ⓘ

Proliferation, Differentiation & Cell State ⓘ

Migration ⓘ

Angiogenesis & Vasculature ⓘ

Barriers & Transport ⓘ

Immune & Inflammatory Signaling ⓘ

Hormonal & Nuclear Receptors ⓘ

Drug Metabolism & Resistance ⓘ

Clinical Biomarkers ⓘ

Functional Outcomes ⓘ

Pathway results for Effect on Normal Cells:

Redox & Oxidative Stress ⓘ

Core Metabolism/Glycolysis ⓘ

Cell Death ⓘ

Protein Folding & ER Stress ⓘ

Migration ⓘ

Barriers & Transport ⓘ

Immune & Inflammatory Signaling ⓘ

Clinical Biomarkers ⓘ

Functional Outcomes ⓘ

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