Sirtuins and Hypoxia in EMT Control

Area of Science:

• Cell Biology
• Molecular Biology
• Biochemistry

Background:

• Epithelial-mesenchymal transition (EMT) is a developmental process that can become pathological, contributing to cancer and fibrosis.
• Hypoxia (reduced oxygen tension) is a key driver of aberrant EMT, involving hypoxia-inducible factors (HIF-1α and HIF-2α).
• Hypoxia-dependent and independent EMT pathways exist, highlighting complex regulatory networks.

Purpose of the Study:

• To review the interplay between hypoxia, sirtuins, and EMT.
• To explore the dual role of sirtuins as activators or inhibitors in hypoxia-induced EMT.
• To summarize nanoparticle-based strategies for modulating hypoxia and EMT.

Main Methods:

• Literature review of studies on hypoxia, sirtuins, and EMT.
• Analysis of molecular pathways involving HIF-1α, HIF-2α, and sirtuins.
• Examination of therapeutic strategies utilizing natural and synthetic molecules delivered via nanoparticles.

Main Results:

• Sirtuins are implicated in regulating both hypoxia responses and EMT induction.
• Different sirtuins exhibit context-dependent roles, acting as either promoters or suppressors of EMT.
• Natural and synthetic molecules targeting sirtuins and HIF show potential for EMT modulation.
• Nanoparticle delivery systems enhance the efficacy of these therapeutic molecules.

Conclusions:

• Hypoxia, sirtuins, and EMT are intricately linked in pathological processes.
• Targeting sirtuin activity presents a promising therapeutic avenue for controlling EMT.
• Nanoparticle-mediated delivery offers a viable strategy for developing novel EMT modulators.