SIL Silymarin (Milk Thistle) silibinin
Description: <b>Silymarin (Milk Thistle)</b> Flowering herb related to daisy and ragweed family.<br>
Silibinin (INN), also known as silybin is the major active constituent of silymarin, a standardized extract of the milk thistle seeds. <br>
-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<br>
<br>
-Note <a href="tbResList.php?qv=154&tsv=1109&wNotes=on&exSp=open">half-life</a> 6hrs?.<br>
<a href="tbResList.php?qv=154&tsv=792&wNotes=on&exSp=open">BioAv</a> 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.
<br>
Pathways:<br>
<!-- ROS : MMP↓, ER Stress↑, Ca+2↑, Cyt‑c↑, Casp3↑, Casp9↑, DNAdam↑, UPR↑, cl-PARP↑-->
- results for both inducing and reducing
<a href="tbResList.php?qv=154&tsv=275&wNotes=on">ROS</a> 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).<br>
- ROS↑ related:
<a href="tbResList.php?qv=154&tsv=197&wNotes=on&word=MMP↓">MMP↓</a>(ΔΨm),
<!-- <a href="tbResList.php?qv=154&tsv=103&wNotes=on">ER Stress↑</a>, -->
<!-- <a href="tbResList.php?qv=154&tsv=459&wNotes=on">UPR↑</a>, -->
<!-- <a href="tbResList.php?qv=154&tsv=356&wNotes=on">GRP78↑</a>, -->
<a href="tbResList.php?qv=154&tsv=38&wNotes=on&word=Ca+2↑">Ca+2↑</a>,
<a href="tbResList.php?qv=154&tsv=77&wNotes=on">Cyt‑c↑</a>,
<a href="tbResList.php?qv=154&wNotes=on&word=Casp">Caspases↑</a>,
<a href="tbResList.php?qv=154&tsv=82&wNotes=on&word=DNAdam↑">DNA damage↑</a>,
<a href="tbResList.php?qv=154&tsv=239&wNotes=on">cl-PARP↑</a>,
<!-- <a href="tbResList.php?qv=154&wNotes=on&word=HSP">HSP↓</a>, -->
<!-- <a href="tbResList.php?qv=154&wNotes=on&word=Prx">Prx</a>, --><!-- mitochondrial antioxidant enzyme-->
<br>
<!-- ANTIOXIDANT : NRF2, SOD, GSH, CAT, HO-1, GPx, GPX4, -->
<!--
- Lowers AntiOxidant defense in Cancer Cells:
<a href="tbResList.php?qv=154&tsv=226&wNotes=on&word=NRF2↓">NRF2↓</a>,
<a href="tbResList.php?qv=154&word=Trx&wNotes=on">TrxR↓**</a>,
<a href="tbResList.php?qv=154&tsv=298&wNotes=on&word=SOD↓">SOD↓</a>,
<a href="tbResList.php?qv=154&tsv=137&wNotes=on&word=GSH↓">GSH↓</a>
<a href="tbResList.php?qv=154&tsv=46&wNotes=on">Catalase↓</a>
<a href="tbResList.php?qv=154&tsv=597&wNotes=on">HO1↓</a>
<a href="tbResList.php?qv=154&wNotes=on&word=GPx">GPx↓</a>
<br> -->
- Raises
<a href="tbResList.php?qv=154&tsv=1103&wNotes=on&word=antiOx↑">AntiOxidant</a>
defense in Normal Cells:
<a href="tbResList.php?qv=154&tsv=275&wNotes=on&word=ROS↓">ROS↓</a>,
<a href="tbResList.php?qv=154&tsv=226&wNotes=on&word=NRF2↑">NRF2↑</a>,
<a href="tbResList.php?qv=154&tsv=298&wNotes=on&word=SOD↑">SOD↑</a>,
<a href="tbResList.php?qv=154&tsv=137&wNotes=on&word=GSH↑">GSH↑</a>,
<a href="tbResList.php?qv=154&tsv=46&wNotes=on&word=Catalase↑">Catalase↑</a>,
<br>
<!-- INFLAMMATION : NF-kB↓, COX2↓, COX2↓ PRO-INFL CYTOKINES: IL-1β↓, TNF-α↓, IL-6↓, IL-8↓, -->
- lowers
<a href="tbResList.php?qv=154&tsv=953&wNotes=on&word=Inflam">Inflammation</a> :
<a href="tbResList.php?qv=154&tsv=214&wNotes=on&word=NF-kB↓">NF-kB↓</a>,
<a href="tbResList.php?qv=154&tsv=66&wNotes=on&word=COX2↓">COX2↓</a>,
<a href="tbResList.php?qv=154&tsv=235&wNotes=on&word=p38↓">p38↓</a>(context-dependent; often stress-activated), Pro-Inflammatory Cytokines :
<a href="tbResList.php?qv=154&tsv=908&wNotes=on&word=NLRP3↓">NLRP3↓</a>,
<a href="tbResList.php?qv=154&tsv=978&wNotes=on&word=IL1β↓">IL-1β↓</a>,
<a href="tbResList.php?qv=154&tsv=309&wNotes=on&word=TNF-α↓">TNF-α↓</a>,
<a href="tbResList.php?qv=154&tsv=158&wNotes=on&word=IL6↓">IL-6↓</a>,
<a href="tbResList.php?qv=154&tsv=368&wNotes=on&word=IL8↓">IL-8↓</a>
<br>
<!-- GROWTH/METASTASES : EMT↓, MMPs↓, MMP2↓, MMP9↓, IGF-1, uPA↓, VEGF↓, ERK↓
inhibiting metastasis-associated proteins such as ROCK1, FAK, (RhoA), NF-κB and u-PA, MMP-1 and MMP-13.-->
- inhibit Growth/Metastases :
<a href="tbResList.php?qv=154&tsv=604&wNotes=on">TumMeta↓</a>,
<a href="tbResList.php?qv=154&tsv=323&wNotes=on">TumCG↓</a>,
<a href="tbResList.php?qv=154&tsv=96&wNotes=on">EMT↓</a>,
<a href="tbResList.php?qv=154&tsv=204&wNotes=on">MMPs↓</a>,
<a href="tbResList.php?qv=154&tsv=201&wNotes=on">MMP2↓</a>,
<a href="tbResList.php?qv=154&tsv=203&wNotes=on">MMP9↓</a>,
<a href="tbResList.php?qv=154&tsv=308&wNotes=on">TIMP2</a>,
<!-- <a href="tbResList.php?qv=154&tsv=415&wNotes=on">IGF-1↓</a>, -->
<a href="tbResList.php?qv=154&tsv=428&wNotes=on">uPA↓</a>,
<a href="tbResList.php?qv=154&tsv=334&wNotes=on">VEGF↓</a>,
<!-- <a href="tbResList.php?qv=154&tsv=1284&wNotes=on">ROCK1↓</a>, -->
<a href="tbResList.php?qv=154&tsv=110&wNotes=on">FAK↓</a>,
<!-- <a href="tbResList.php?qv=154&tsv=273&wNotes=on">RhoA↓</a>, -->
<a href="tbResList.php?qv=154&tsv=214&wNotes=on">NF-κB↓</a>,
<a href="tbResList.php?qv=154&tsv=79&wNotes=on">CXCR4↓</a>,
<!-- <a href="tbResList.php?qv=154&tsv=1247&wNotes=on">SDF1↓</a>, -->
<a href="tbResList.php?qv=154&tsv=304&wNotes=on">TGF-β↓</a>,
<a href="tbResList.php?qv=154&tsv=719&wNotes=on">α-SMA↓</a>,
<a href="tbResList.php?qv=154&tsv=105&wNotes=on">ERK↓</a>
<!-- <a href="tbResList.php?qv=154&tsv=1178&wNotes=on">MARK4↓</a> --><!-- contributing to tumor growth, invasion, and metastasis-->
<br>
<!-- REACTIVATE GENES : HDAC↓, DNMT1↓, DNMT3A↓, EZH2↓, P53↑, -->
- reactivate genes thereby inhibiting cancer cell growth :
<a href="tbResList.php?qv=154&tsv=140&wNotes=on">HDAC↓</a>,
<a href="tbResList.php?qv=154&wNotes=on&word=DNMT">DNMTs↓</a>,
<!-- <a href="tbResList.php?qv=154&tsv=108&wNotes=on">EZH2↓</a>, -->
<a href="tbResList.php?qv=154&tsv=236&wNotes=on">P53↑</a>,
<a href="tbResList.php?qv=154&wNotes=on&word=HSP">HSP↓</a>,
<!-- <a href="tbResList.php?qv=154&tsv=506&wNotes=on">Sp proteins↓</a>, -->
<!-- <a href="tbResList.php?qv=154&wNotes=on&word=TET">TET↑</a> -->
<br>
<!-- CELL CYCLE ARREST : TumCCA↑, cyclin D1↓, cyclin E↓, CDK2↓, CDK4↓, CDK6↓ -->
- cause Cell cycle arrest :
<a href="tbResList.php?qv=154&tsv=322&wNotes=on">TumCCA↑</a>,
<a href="tbResList.php?qv=154&tsv=73&wNotes=on">cyclin D1↓</a>,
<a href="tbResList.php?qv=154&tsv=378&wNotes=on">cyclin E↓</a>,
<a href="tbResList.php?qv=154&tsv=467&wNotes=on">CDK2↓</a>,
<a href="tbResList.php?qv=154&tsv=894&wNotes=on">CDK4↓</a>,
<!-- <a href="tbResList.php?qv=154&tsv=895&wNotes=on">CDK6↓</a>, -->
<br>
<!-- MIGRATION/INVASION : TumCMig↓, TumCI↓, FAK↓, ERK↓, -->
- inhibits Migration/Invasion :
<a href="tbResList.php?qv=154&tsv=326&wNotes=on">TumCMig↓</a>,
<a href="tbResList.php?qv=154&tsv=324&wNotes=on">TumCI↓</a>,
<a href="tbResList.php?qv=154&tsv=309&wNotes=on&word=TNF-α↓">TNF-α↓</a>, <!-- encourages invasion, proliferation, EMT, and angiogenesis -->
<a href="tbResList.php?qv=154&tsv=110&wNotes=on">FAK↓</a>,
<a href="tbResList.php?qv=154&tsv=105&wNotes=on">ERK↓</a>,
<a href="tbResList.php?qv=154&tsv=96&wNotes=on">EMT↓</a>,
<!-- <a href="tbResList.php?qv=154&wNotes=on&word=TOP">TOP1↓</a>, -->
<!-- <a href="tbResList.php?qv=154&tsv=657&wNotes=on">TET1</a>, -->
<br>
<!-- GLYCOLYSIS : ATP↓, HIF-1α↓, PKM2↓, cMyc↓, PDK1↓, GLUT1↓, LDHA↓, HK2↓, Glucose↓, GlucoseCon↓, lactateProd, OXPHOS -->
- inhibits
<a href="tbResList.php?qv=154&tsv=129&wNotes=on">glycolysis</a>
<!-- /<a href="tbResList.php?qv=154&tsv=947&wNotes=on">Warburg Effect</a> --> and
<a href="tbResList.php?qv=154&tsv=21&wNotes=on&word=ATP↓">ATP depletion</a> :
<a href="tbResList.php?qv=154&tsv=143&wNotes=on">HIF-1α↓</a>,
<a href="tbResList.php?qv=154&tsv=772&wNotes=on">PKM2↓</a>,
<a href="tbResList.php?qv=154&tsv=35&wNotes=on">cMyc↓</a>,
<a href="tbResList.php?qv=154&tsv=566&wNotes=on&word=GLUT">GLUT1↓</a>,
<a href="tbResList.php?qv=154&tsv=906&wNotes=on">LDH↓</a>,
<a href="tbResList.php?qv=154&tsv=175&wNotes=on&word=LDH">LDHA↓</a>,
<a href="tbResList.php?qv=154&tsv=773&wNotes=on">HK2↓</a>,
<a href="tbResList.php?qv=154&wNotes=on&word=PFK">PFKs↓</a>,
<!-- <a href="tbResList.php?qv=154&wNotes=on&word=PDK">PDKs↓</a>, -->
<!-- <a href="tbResList.php?qv=154&tsv=847&wNotes=on">ECAR↓</a>, -->
<a href="tbResList.php?qv=154&tsv=356&wNotes=on">GRP78↑</a>(ER stress),
<a href="tbResList.php?qv=154&tsv=1278&wNotes=on">Glucose↓</a>,
<a href="tbResList.php?qv=154&tsv=623&wNotes=on">GlucoseCon↓</a>
<br>
<!-- ANGIOGENESIS : VEGF↓, VEGFR2↓, HIF-1α↓, NOTCH↓, FGF↓, PDGF↓, EGFR↓ ITG(Integrins↓)-->
- inhibits
<a href="tbResList.php?qv=154&tsv=447&wNotes=on">angiogenesis↓</a> :
<a href="tbResList.php?qv=154&tsv=334&wNotes=on">VEGF↓</a>,
<a href="tbResList.php?qv=154&tsv=143&wNotes=on">HIF-1α↓</a>,
<a href="tbResList.php?qv=154&wNotes=on&word=NOTCH">Notch↓</a>,
<!-- <a href="tbResList.php?qv=154&wNotes=on&word=FGF">FGF↓</a>, -->
<a href="tbResList.php?qv=154&wNotes=on&word=PDGF">PDGF↓</a>,
<a href="tbResList.php?qv=154&tsv=94&wNotes=on&word=EGFR↓">EGFR↓</a>,
<!-- <a href="tbResList.php?qv=154&&wNotes=on&word=ITG">Integrins↓</a>, -->
<br>
<!-- CSCs : CSC↓, CK2↓, Hh↓, GLi↓, GLi1↓, -->
- inhibits Cancer Stem Cells :
<a href="tbResList.php?qv=154&tsv=795&wNotes=on">CSC↓</a>,
<!-- <a href="tbResList.php?qv=154&tsv=524&wNotes=on">CK2↓</a>, -->
<a href="tbResList.php?qv=154&tsv=141&wNotes=on">Hh↓</a>,
<!-- <a href="tbResList.php?qv=154&tsv=434&wNotes=on">GLi↓</a>, -->
<a href="tbResList.php?qv=154&tsv=124&wNotes=on">GLi1↓</a>,
<!-- <a href="tbResList.php?qv=154&tsv=677&wNotes=on">CD133↓</a>, -->
<!-- <a href="tbResList.php?qv=154&tsv=655&wNotes=on">CD24↓</a>, -->
<a href="tbResList.php?qv=154&tsv=342&wNotes=on">β-catenin↓</a>,
<!-- <a href="tbResList.php?qv=154&tsv=357&wNotes=on">n-myc↓</a>, -->
<!-- <a href="tbResList.php?qv=154&tsv=656&wNotes=on">sox2↓</a>, -->
<a href="tbResList.php?qv=154&wNotes=on&word=NOTCH">Notch2↓</a>,
<!-- <a href="tbResList.php?qv=154&tsv=1024&wNotes=on">nestin↓</a>, -->
<a href="tbResList.php?qv=154&tsv=508&wNotes=on">OCT4↓</a>,
<br>
<!-- OTHERS : -->
- Others: <a href="tbResList.php?qv=154&tsv=252&wNotes=on">PI3K↓</a>,
<a href="tbResList.php?qv=154&tsv=4&wNotes=on">AKT↓</a>,
<a href="tbResList.php?qv=154&wNotes=on&word=JAK">JAK↓</a>,
<a href="tbResList.php?qv=154&wNotes=on&word=STAT">STAT↓</a>,
<a href="tbResList.php?qv=154&tsv=377&wNotes=on">Wnt↓</a>,
<a href="tbResList.php?qv=154&tsv=342&wNotes=on">β-catenin↓</a>,
<a href="tbResList.php?qv=154&tsv=9&wNotes=on">AMPK</a>,
<!-- <a href="tbResList.php?qv=154&tsv=475&wNotes=on">α↓</a>, -->
<a href="tbResList.php?qv=154&tsv=105&wNotes=on">ERK↓</a>,
<!-- <a href="tbResList.php?qv=154&tsv=1014&wNotes=on">5↓</a>, -->
<a href="tbResList.php?qv=154&tsv=168&wNotes=on">JNK</a>,
- <a href="tbResList.php?qv=154&wNotes=on&word=SREBP">SREBP</a> (related to cholesterol).<br>
<!-- SYNERGIES : -->
- Synergies:
<a href="tbResList.php?qv=154&tsv=1106&wNotes=on">chemo-sensitization</a>,
<a href="tbResList.php?qv=154&tsv=1171&wNotes=on">chemoProtective</a>,
<a href="tbResList.php?qv=154&tsv=1107&wNotes=on">RadioSensitizer</a>,
<a href="tbResList.php?qv=154&tsv=1185&wNotes=on">RadioProtective</a>,
<a href="tbResList.php?qv=154&tsv=961&esv=2&wNotes=on&exSp=open">Others(review target notes)</a>,
<a href="tbResList.php?qv=154&tsv=1105&wNotes=on">Neuroprotective</a>,
<a href="tbResList.php?qv=154&tsv=557&wNotes=on">Cognitive</a>,
<a href="tbResList.php?qv=154&tsv=1175&wNotes=on">Renoprotection</a>,
<a href="tbResList.php?qv=154&tsv=1179&wNotes=on">Hepatoprotective</a>,
<a href="tbResList.php?&qv=154&tsv=1188&wNotes=on">CardioProtective</a>,
<br>
<br>
<!-- SELECTIVE: -->
- Selectivity:
<a href="tbResList.php?qv=154&tsv=1110&wNotes=on">Cancer Cells vs Normal Cells</a>
<br>
<br>
<!-- Silymarin (Milk Thistle; major active = silibinin/silybin) — Time-Scale Flagged Pathway Table (web-page ready) -->
<table border="1" cellpadding="4" cellspacing="0">
<tr>
<th>Rank</th>
<th>Pathway / Axis</th>
<th>Cancer Cells</th>
<th>Normal Cells</th>
<th>TSF</th>
<th>Primary Effect</th>
<th>Notes / Interpretation</th>
</tr>
<tr>
<td>1</td>
<td>ROS / redox buffering + mitochondrial protection</td>
<td>Often ↑ stress susceptibility; can support apoptosis when survival signaling is blocked</td>
<td>↓ oxidative stress; mitochondrial protection</td>
<td>P, R, G</td>
<td>Context-selective redox modulation</td>
<td>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.</td>
</tr>
<tr>
<td>2</td>
<td>Intrinsic apoptosis (mitochondria → caspases)</td>
<td>↑ apoptosis signaling; ↑ caspase activation</td>
<td>↔ minimal activation</td>
<td>G</td>
<td>Cell death execution</td>
<td>Common downstream outcome in cancer models: apoptosis increases after earlier signaling/redox shifts and/or checkpoint disruption.</td>
</tr>
<tr>
<td>3</td>
<td>Cell-cycle control (cyclins/CDKs; checkpoints)</td>
<td>↑ arrest (G1/S or G2/M depending on model)</td>
<td>↔</td>
<td>G</td>
<td>Cytostasis</td>
<td>Typically observed as reduced proliferation with checkpoint engagement; timing usually later than kinase phosphorylation changes.</td>
</tr>
<tr>
<td>4</td>
<td>NF-κB inflammatory transcription</td>
<td>↓ NF-κB activity; ↓ inflammatory/pro-survival tone</td>
<td>↔ or protective anti-inflammatory effect</td>
<td>R, G</td>
<td>Anti-inflammatory / anti-survival transcription</td>
<td>NF-κB suppression can reduce tumor-promoting inflammation and blunt stress-adaptive survival programs.</td>
</tr>
<tr>
<td>5</td>
<td>JAK/STAT3 axis (incl. PD-L1 / immune escape programs in some models)</td>
<td>↓ STAT3 signaling (context); may ↓ PD-L1 in certain tumor contexts</td>
<td>↔</td>
<td>R, G</td>
<td>Reduced survival + immune-evasion signaling</td>
<td>Reported to attenuate STAT3-driven tumor programs and, in some contexts, reduce immune-suppressive signaling (model dependent).</td>
</tr>
<tr>
<td>6</td>
<td>PI3K → AKT → mTOR survival / growth signaling</td>
<td>↓ PI3K/AKT/mTOR signaling (context)</td>
<td>↔</td>
<td>R, G</td>
<td>Growth/survival suppression</td>
<td>Reduced PI3K/AKT/mTOR tone increases sensitivity to apoptosis and can reinforce cell-cycle arrest.</td>
</tr>
<tr>
<td>7</td>
<td>MAPK re-wiring (ERK/p38/JNK balance)</td>
<td>Stress-MAPK shifts; ERK tone often reduced or re-patterned</td>
<td>↔</td>
<td>P, R, G</td>
<td>Signal reprogramming</td>
<td>Early phosphorylation shifts can precede later gene-expression changes; exact ERK direction is model and dose dependent.</td>
</tr>
<tr>
<td>8</td>
<td>Angiogenesis (VEGF and angiogenic factors)</td>
<td>↓ VEGF / angiogenesis outputs</td>
<td>↔</td>
<td>G</td>
<td>Anti-angiogenic support</td>
<td>Typically reflected in reduced pro-angiogenic expression/secretion and angiogenesis-related phenotypes over longer windows.</td>
</tr>
<tr>
<td>9</td>
<td>EMT / invasion / migration programs (incl. TGF-β/Smad-associated EMT in some systems)</td>
<td>↓ EMT markers; ↓ migration/invasion</td>
<td>↔</td>
<td>G</td>
<td>Anti-invasive phenotype</td>
<td>Often presents as restoration of epithelial markers and suppression of migration/invasion assays; commonly a later phenotype-level outcome.</td>
</tr>
<tr>
<td>10</td>
<td>Xenobiotic handling (Phase I/II enzymes; cytoprotection / chemoprevention framing)</td>
<td>May alter carcinogen activation/detox balance</td>
<td>↑ detox / cytoprotection against xenobiotics</td>
<td>G</td>
<td>Chemopreventive protection</td>
<td>A key “dual strategy” theme: protection of normal tissue from toxins/therapy while modulating tumor response pathways.</td>
</tr>
<tr>
<td>11</td>
<td>Drug resistance / efflux (MDR phenotype; P-gp-related resistance in some models)</td>
<td>May ↓ functional MDR and ↑ chemo sensitivity (context)</td>
<td>↔</td>
<td>R, G</td>
<td>Chemo-sensitization support</td>
<td>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.</td>
</tr>
<tr>
<td>12</td>
<td>Immune microenvironment signaling (cytokines / macrophage recruitment in some models)</td>
<td>May ↓ pro-tumor cytokine programs and recruitment signals (context)</td>
<td>↔</td>
<td>G</td>
<td>Anti-inflammatory tumor microenvironment shift</td>
<td>Immune-modulatory effects are increasingly discussed, but they are more model-dependent and typically show on longer time scales.</td>
</tr>
</table>
<p><b>Time-Scale Flag (TSF):</b> P / R / G</p>
<ul>
<li><b>P</b>: 0–30 min (primary/physical–chemical effects; rapid signaling / phosphorylation shifts)</li>
<li><b>R</b>: 30 min–3 hr (redox signaling + acute stress-response signaling)</li>
<li><b>G</b>: >3 hr (gene-regulatory adaptation and phenotype-level outcomes)</li>
</ul>