Regulation of HSF1 protein stabilization: An updated review

Area of Science:

• Molecular Biology
• Cellular Stress Response
• Neurodegenerative Diseases

Background:

• Heat shock factor 1 (HSF1) regulates cellular heat shock responses (HSRs).
• HSF1 dysfunction is implicated in protein aggregation disorders.
• Traditional regulation of HSF1 occurs at the transcriptional level via post-translational modifications.

Purpose of the Study:

• To review the regulation of monomeric Heat shock factor 1 (HSF1).
• To explore potential mechanisms for HSF1 protein stabilization.
• To provide insights into HSF1 stabilization as a therapeutic strategy for neurodegenerative diseases.

Main Methods:

• Literature review of studies on HSF1 regulation.
• Analysis of factors affecting monomeric HSF1 levels.
• Examination of mechanisms underlying HSF1 protein stabilization.

Main Results:

• Monomeric HSF1 levels are reduced in neurodegenerative conditions like Alzheimer's and Huntington's disease.
• Clinical drugs Methylene Blue (MB) and riluzole increase monomeric HSF1.
• Factors such as synuclein, Huntingtin (Htt), TDP-43, unfolded protein response (UPR), MB, and doxorubicin (DOX) influence monomeric HSF1.

Conclusions:

• Monomeric HSF1 plays a critical role in HSRs and exerts protective effects independently of trimerization.
• Stabilizing HSF1 protein may offer a novel therapeutic approach for amplifying HSRs.
• Further understanding of HSF1 regulation and stabilization is needed to develop effective treatments for protein aggregation disorders.