This study investigates the dose-dependent effects of kaempferol on the HSP70–Beclin-1 complex in esophageal squamous carcinoma cells, revealing its potential to influence autophagy and chemotherapy response. Low doses suppress autophagy and enhance chemotherapy resistance, while high doses promote autophagy and chemosensitization.
Background
Autophagy plays a dual role in cancer, either supporting cell survival or promoting cell death under therapeutic stress. Understanding the molecular mechanisms that dictate these outcomes is crucial for improving cancer treatment strategies. The HSP70–Beclin-1 complex is a key regulatory node in autophagy, and its modulation could provide insights into optimizing therapeutic responses.
Data Highlights
Kaempferol Dose
Effect on HSP70–Beclin-1
Autophagic Flux
Chemotherapy Response
Low Dose
Stabilized
Suppressed
Diminished
High Dose
Disrupted
Enhanced
Potentiated
Key Findings
Low-dose kaempferol stabilizes the HSP70–Beclin-1 complex, suppressing autophagy.
High-dose kaempferol disrupts the HSP70–Beclin-1 complex, enhancing autophagic flux.
High-dose kaempferol activates AMPK/mTOR inhibition and ER stress–JNK signaling.
High-dose kaempferol enhances the antitumor activity of cisplatin in vivo.
Clinical Implications
The findings suggest that the dosing of kaempferol could be strategically utilized to modulate autophagy and improve chemotherapy responses in cancer treatment. Clinicians may consider the implications of autophagy modulation when designing treatment regimens involving natural compounds.
Conclusion
This study highlights the importance of dose-dependent modulation of the HSP70–Beclin-1 complex in regulating autophagy and therapeutic responses, providing a framework for future research and clinical applications.
