HNK Honokiol
Description: <b>Honokiol</b> 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.<br>
-considered to have antioxidant properties<br>
-low oral bioavailability and difficulty in intravenous administration<br>
-the development of various formulations of honokiol, including microemulsion, liposomes, nanoparticles and micelle copolymers have successfully solved the problem of low water solubility.<br>
<br>
Pathways:<br>
-Inhibit NF-κB activation<br>
-Downregulate STAT3 signalin<br>
-Inhibiting the PI3K/Akt pathway,<br>
-Inhibition of mTOR<br>
-Influences various MAPK cascades—including ERK, JNK, and p38<br>
-Inhibition of EGFR<br>
-Inhibiting Notch pathway (CSCs)<br>
-GPx4 inhibit<br>
-Can induce ER stress in cancer cells, which contributes to the activation of unfolded protein response (UPR) pathways<br>
-Disrupt the mitochondrial membrane potential in cancer cells.<br>
-Reported to increase ROS production in cancer cells<br>
-Can exhibit antioxidant properties in normal cells.
- has some inhibitor activity but Not classified as HDAC inhibitor as weaker and may work more indirectly.<br>
- is well-known in the research community for its role in activating SIRT3<br>
<br>
-Note <a href="tbResList.php?qv=94&tsv=1109&wNotes=on&exSp=open">half-life</a> 40–60 minutes<br>
<a href="tbResList.php?qv=94&tsv=792&wNotes=on&exSp=open">BioAv</a>
<br>
Pathways:<br>
<!-- ROS : MMP↓, ER Stress↑, Ca+2↑, Cyt‑c↑, Casp3↑, Casp9↑, DNAdam↑, UPR↑, cl-PARP↑-->
- induce
<a href="tbResList.php?qv=94&tsv=275&wNotes=on">ROS</a> production in cancer cells,
and typically lowers ROS in normal cells<br>
- ROS↑ related:
<a href="tbResList.php?qv=94&tsv=197&wNotes=on&word=MMP↓">MMP↓</a>(ΔΨm),
<a href="tbResList.php?qv=94&tsv=103&wNotes=on">ER Stress↑</a>,
<a href="tbResList.php?qv=94&tsv=356&wNotes=on">GRP78↑</a>,
<a href="tbResList.php?qv=94&tsv=38&wNotes=on&word=Ca+2↑">Ca+2↑</a>,
<a href="tbResList.php?qv=94&tsv=77&wNotes=on">Cyt‑c↑</a>,
<a href="tbResList.php?qv=94&wNotes=on&word=Casp">Caspases↑</a>,
<a href="tbResList.php?qv=94&tsv=82&wNotes=on&word=DNAdam↑">DNA damage↑</a>,
<a href="tbResList.php?qv=94&tsv=239&wNotes=on">cl-PARP↑</a>,
<a href="tbResList.php?qv=94&wNotes=on&word=HSP">HSP↓</a>
<a href="tbResList.php?qv=94&wNotes=on&word=Prx">Prx</a><!-- mitochondrial antioxidant enzyme-->
<br>
- Raises
<a href="tbResList.php?qv=94&tsv=1103&wNotes=on&word=antiOx↑">AntiOxidant</a>
defense in Normal Cells:
<a href="tbResList.php?qv=94&tsv=275&wNotes=on&word=ROS↓">ROS↓</a>,
<a href="tbResList.php?qv=94&tsv=226&wNotes=on&word=NRF2↑">NRF2↑</a>,
<a href="tbResList.php?qv=94&tsv=298&wNotes=on&word=SOD↑">SOD↑</a>,
<a href="tbResList.php?qv=94&tsv=137&wNotes=on&word=GSH↑">GSH↑</a>,
<a href="tbResList.php?qv=94&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=94&tsv=953&wNotes=on&word=Inflam">Inflammation</a> :
<a href="tbResList.php?qv=94&tsv=214&wNotes=on&word=NF-kB↓">NF-kB↓</a>,
<a href="tbResList.php?qv=94&tsv=66&wNotes=on&word=COX2↓">COX2↓</a>,
Pro-Inflammatory Cytokines :
<a href="tbResList.php?qv=94&tsv=978&wNotes=on&word=IL1β↓">IL-1β↓</a>,
<a href="tbResList.php?qv=94&tsv=309&wNotes=on&word=TNF-α↓">TNF-α↓</a>,
<a href="tbResList.php?qv=94&tsv=158&wNotes=on&word=IL6↓">IL-6↓</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=94&tsv=604&wNotes=on">TumMeta↓</a>,
<a href="tbResList.php?qv=94&tsv=323&wNotes=on">TumCG↓</a>,
<a href="tbResList.php?qv=94&tsv=96&wNotes=on">EMT↓</a>,
<a href="tbResList.php?qv=94&tsv=204&wNotes=on">MMPs↓</a>,
<a href="tbResList.php?qv=94&tsv=201&wNotes=on">MMP2↓</a>,
<a href="tbResList.php?qv=94&tsv=203&wNotes=on">MMP9↓</a>,
<a href="tbResList.php?qv=94&tsv=334&wNotes=on">VEGF↓</a>,
<a href="tbResList.php?qv=94&tsv=1284&wNotes=on">ROCK1↓</a>,
<a href="tbResList.php?qv=94&tsv=273&wNotes=on">RhoA↓</a>,
<a href="tbResList.php?qv=94&tsv=214&wNotes=on">NF-κB↓</a>,
<a href="tbResList.php?qv=94&tsv=79&wNotes=on">CXCR4↓</a>,
<a href="tbResList.php?qv=94&tsv=105&wNotes=on">ERK↓</a>
<br>
<!-- REACTIVATE GENES : HDAC↓, DNMT1↓, DNMT3A↓, EZH2↓, P53↑, -->
- reactivate genes thereby inhibiting cancer cell growth :
<a href="tbResList.php?qv=94&tsv=140&wNotes=on">HDAC↓</a>,
<a href="tbResList.php?qv=94&tsv=108&wNotes=on">EZH2↓</a>,
<a href="tbResList.php?qv=94&tsv=236&wNotes=on">P53↑</a>,
<a href="tbResList.php?qv=94&wNotes=on&word=HSP">HSP↓</a>,
<br>
<!-- CELL CYCLE ARREST : TumCCA↑, cyclin D1↓, cyclin E↓, CDK2↓, CDK4↓, CDK6↓ -->
- cause Cell cycle arrest :
<a href="tbResList.php?qv=94&tsv=322&wNotes=on">TumCCA↑</a>,
<a href="tbResList.php?qv=94&tsv=73&wNotes=on">cyclin D1↓</a>,
<a href="tbResList.php?qv=94&tsv=378&wNotes=on">cyclin E↓</a>,
<a href="tbResList.php?qv=94&tsv=467&wNotes=on">CDK2↓</a>,
<a href="tbResList.php?qv=94&tsv=894&wNotes=on">CDK4↓</a>,
<a href="tbResList.php?qv=94&tsv=895&wNotes=on">CDK6↓</a>,
<br>
<!-- MIGRATION/INVASION : TumCMig↓, TumCI↓, FAK↓, ERK↓, -->
- inhibits Migration/Invasion :
<a href="tbResList.php?qv=94&tsv=326&wNotes=on">TumCMig↓</a>,
<a href="tbResList.php?qv=94&tsv=324&wNotes=on">TumCI↓</a>,
<a href="tbResList.php?qv=94&tsv=105&wNotes=on">ERK↓</a>,
<a href="tbResList.php?qv=94&tsv=96&wNotes=on">EMT↓</a>,
<br>
<!-- GLYCOLYSIS : ATP↓, HIF-1α↓, PKM2↓, cMyc↓, PDK1↓, GLUT1↓, LDHA↓, HK2↓, Glucose↓, GlucoseCon↓, lactateProd, OXPHOS -->
- inhibits
<a href="tbResList.php?qv=94&tsv=129&wNotes=on">glycolysis</a>
and
<a href="tbResList.php?qv=94&tsv=21&wNotes=on&word=ATP↓">ATP depletion</a> :
<a href="tbResList.php?qv=94&tsv=143&wNotes=on">HIF-1α↓</a>,
<a href="tbResList.php?qv=94&tsv=35&wNotes=on">cMyc↓</a>,
<a href="tbResList.php?qv=94&tsv=566&wNotes=on&word=GLUT">GLUT1↓</a>,
<a href="tbResList.php?qv=94&tsv=906&wNotes=on">LDH↓</a>,
<a href="tbResList.php?qv=94&tsv=175&wNotes=on&word=LDH">LDHA↓</a>,
<a href="tbResList.php?qv=94&tsv=773&wNotes=on">HK2↓</a>,
<a href="tbResList.php?qv=94&wNotes=on&word=PDK">PDKs↓</a>,
<a href="tbResList.php?qv=94&tsv=847&wNotes=on">ECAR↓</a>,
<a href="tbResList.php?qv=94&tsv=230&wNotes=on">OXPHOS↓</a>,
<a href="tbResList.php?qv=94&tsv=356&wNotes=on">GRP78↑</a>,
<a href="tbResList.php?qv=94&tsv=623&wNotes=on">GlucoseCon↓</a>
<br>
<!-- ANGIOGENESIS : VEGF↓, VEGFR2↓, HIF-1α↓, NOTCH↓, FGF↓, PDGF↓, EGFR↓ ITG(Integrins↓)-->
- inhibits
<a href="tbResList.php?qv=94&tsv=447&wNotes=on">angiogenesis↓</a> :
<a href="tbResList.php?qv=94&tsv=334&wNotes=on">VEGF↓</a>,
<a href="tbResList.php?qv=94&tsv=143&wNotes=on">HIF-1α↓</a>,
<a href="tbResList.php?qv=94&wNotes=on&word=NOTCH">Notch↓</a>,
<a href="tbResList.php?qv=94&tsv=94&wNotes=on&word=EGFR↓">EGFR↓</a>,
<br>
<!-- CSCs : CSC↓, CK2↓, Hh↓, GLi↓, GLi1↓, -->
- inhibits Cancer Stem Cells :
<a href="tbResList.php?qv=94&tsv=795&wNotes=on">CSC↓</a>,
<a href="tbResList.php?qv=94&tsv=677&wNotes=on">CD133↓</a>,
<a href="tbResList.php?qv=94&tsv=342&wNotes=on">β-catenin↓</a>,
<a href="tbResList.php?qv=94&tsv=656&wNotes=on">sox2↓</a>,
<a href="tbResList.php?qv=94&tsv=1024&wNotes=on">nestin↓</a>,
<a href="tbResList.php?qv=94&tsv=508&wNotes=on">OCT4↓</a>,
<br>
<!-- OTHERS : -->
- Others: <a href="tbResList.php?qv=94&tsv=252&wNotes=on">PI3K↓</a>,
<a href="tbResList.php?qv=94&tsv=4&wNotes=on">AKT↓</a>,
<a href="tbResList.php?qv=94&wNotes=on&word=JAK">JAK↓</a>,
<a href="tbResList.php?qv=94&wNotes=on&word=STAT">STAT↓</a>,
<a href="tbResList.php?qv=94&tsv=377&wNotes=on">Wnt↓</a>,
<a href="tbResList.php?qv=94&tsv=342&wNotes=on">β-catenin↓</a>,
<a href="tbResList.php?qv=94&tsv=9&wNotes=on">AMPK</a>,
<a href="tbResList.php?qv=94&tsv=105&wNotes=on">ERK↓</a>,
<a href="tbResList.php?qv=94&tsv=168&wNotes=on">JNK</a>,
<a href="tbResList.php?qv=94&wNotes=on&word=Trx">TrxR**</a>,
- Shown to modulate the nuclear translocation of
<a href="tbResList.php?qv=94&tsv=1132&wNotes=on&exSp=open&word=SREBP2">SREBP-2</a> (related to cholesterol).<br>
<!-- SYNERGIES : -->
- Synergies:
<a href="tbResList.php?qv=94&tsv=1106&wNotes=on">chemo-sensitization</a>,
<a href="tbResList.php?qv=94&tsv=1171&wNotes=on">chemoProtective</a>,
<a href="tbResList.php?qv=94&tsv=1107&wNotes=on">RadioSensitizer</a>,
<a href="tbResList.php?qv=94&tsv=1185&wNotes=on">RadioProtective</a>,
<a href="tbResList.php?qv=94&tsv=961&esv=2&wNotes=on&exSp=open">Others(review target notes)</a>,
<a href="tbResList.php?qv=94&tsv=1105&wNotes=on">Neuroprotective</a>,
<a href="tbResList.php?qv=94&tsv=557&wNotes=on">Cognitive</a>,
<a href="tbResList.php?qv=94&tsv=1175&wNotes=on">Renoprotection</a>,
<a href="tbResList.php?qv=94&tsv=1179&wNotes=on">Hepatoprotective</a>,
<a href="tbResList.php?&qv=94&tsv=1188&wNotes=on">CardioProtective</a>,
<br>
<br>
<!-- SELECTIVE: -->
- Selectivity:
<a href="tbResList.php?qv=94&tsv=1110&wNotes=on">Cancer Cells vs Normal Cells</a><br>
<br>
<table border="1" cellspacing="0" cellpadding="4">
<tr>
<th>Rank</th>
<th>Pathway / Axis</th>
<th>Cancer Cells</th>
<th>Normal Cells</th>
<th>Label</th>
<th>Primary Interpretation</th>
<th>Notes</th>
</tr>
<tr>
<td>1</td>
<td>Mitochondrial integrity / intrinsic apoptosis</td>
<td>↓ ΔΨm; ↑ cytochrome-c release; ↑ caspases</td>
<td>↔ largely preserved</td>
<td>Driver</td>
<td>Mitochondria-directed cytotoxicity</td>
<td>Honokiol directly accumulates in mitochondria and initiates intrinsic apoptosis in cancer cells</td>
</tr>
<tr>
<td>2</td>
<td>Reactive oxygen species (ROS)</td>
<td>↑ ROS (secondary, stress-amplifying)</td>
<td>↔ buffered</td>
<td>Secondary</td>
<td>Mitochondrial stress amplification</td>
<td>ROS elevation follows mitochondrial perturbation rather than acting as the initiating trigger</td>
</tr>
<tr>
<td>3</td>
<td>STAT3 signaling</td>
<td>↓ STAT3 activation</td>
<td>↔ minimal</td>
<td>Driver</td>
<td>Loss of survival and stemness signaling</td>
<td>STAT3 suppression contributes to apoptosis, CSC targeting, and reduced proliferation</td>
</tr>
<tr>
<td>4</td>
<td>PI3K → AKT → mTOR axis</td>
<td>↓ AKT / ↓ mTOR</td>
<td>↔ adaptive suppression</td>
<td>Secondary</td>
<td>Growth and anabolic inhibition</td>
<td>AKT/mTOR inhibition reinforces mitochondrial and apoptotic stress</td>
</tr>
<tr>
<td>5</td>
<td>NF-κB signaling</td>
<td>↓ NF-κB activation</td>
<td>↓ inflammatory NF-κB tone</td>
<td>Secondary</td>
<td>Suppression of survival transcription</td>
<td>NF-κB inhibition contributes to chemosensitization and anti-inflammatory effects</td>
</tr>
<tr>
<td>6</td>
<td>Cell cycle regulation</td>
<td>↑ G0/G1 or G2/M arrest</td>
<td>↔ spared</td>
<td>Phenotypic</td>
<td>Cytostatic growth control</td>
<td>Cell-cycle arrest reflects upstream signaling disruption</td>
</tr>
<tr>
<td>7</td>
<td>Autophagy</td>
<td>↑ autophagy (context-dependent)</td>
<td>↑ adaptive autophagy</td>
<td>Adaptive</td>
<td>Stress response vs death cooperation</td>
<td>Autophagy may precede apoptosis or act as a transient survival response</td>
</tr>
</table>