Hederagenin exerts anti-tumor effects in pancreatic cancer by impairing DRP1 mediated-mitophagy via VDAC1-HK2-PINK1/PARKIN pathway
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View abstract on PubMed
Summary
This summary is machine-generated.Hederagenin (HDG) inhibits mitophagy, a key process in pancreatic cancer (PC) cells. This novel approach suppresses PC cell growth and tumor expansion by targeting the DRP1-VDAC1-HK2-PINK1/PARKIN pathway.
Area Of Science
- Oncology
- Cell Biology
- Biochemistry
Background
- Pancreatic cancer (PC) remains a highly lethal malignancy with limited treatment options.
- Mitophagy suppression is an emerging strategy for cancer therapy.
- Hederagenin (HDG), a natural triterpenoid, shows potential as a mitophagy inhibitor.
Purpose Of The Study
- To investigate the anti-cancer effects of Hederagenin (HDG) in pancreatic cancer.
- To elucidate the mechanism by which HDG inhibits mitophagy and suppresses PC cell proliferation.
Main Methods
- In vitro studies using PC cell lines (BXPC-3, PANC-1) and in vivo tumor models.
- Analysis of mitochondrial function, reactive oxygen species (ROS) levels, and autophagic flux.
- Western blot analysis to assess protein expression (SNAP29, LAMP1, Rab7, DRP1, VDAC1, HK2, PINK1/PARKIN).
- Manipulation of DRP1 expression (overexpression and knockdown) to confirm its role.
Main Results
- HDG suppressed PC cell growth in vitro and tumor expansion in vivo.
- HDG induced mitochondrial permeability transition pore opening and increased ROS accumulation.
- HDG disrupted autophagic flux, increased autophagosomes, and inhibited lysosome-autophagosome fusion.
- HDG downregulated DRP1, leading to VDAC1 oligomerization, HK2 dissociation, and PINK1/PARKIN pathway suppression.
- DRP1 modulation affected HDG's anti-mitophagy activity, confirming its critical role.
Conclusions
- HDG exhibits significant anti-pancreatic cancer activity by inhibiting mitophagy.
- The mechanism involves the suppression of the DRP1-VDAC1-HK2-PINK1/PARKIN signaling pathway.
- HDG represents a promising therapeutic agent for pancreatic cancer targeting mitophagy.
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