HSF1 and Its Role in Huntington’s Disease Pathology

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Purpose of review: Heat shock factor 1 (HSF1) is the master transcriptional regulator of the heat shock response (HSR) in mammalian cells and is a critical element in maintaining protein homeostasis. HSF1 functions at the center of many physiological processes like embryogenesis, metabolism, immune response, aging, cancer, and neurodegeneration. However, the mechanisms that allow HSF1 to control these different biological and pathophysiological processes are not fully understood. This review focuses on Huntington’s disease (HD), a neurodegenerative disease characterized by severe protein aggregation of the huntingtin (HTT) protein. The aggregation of HTT, in turn, leads to a halt in the function of HSF1. Understanding the pathways that regulate HSF1 in different contexts like HD may hold the key to understanding the pathomechanisms underlying other proteinopathies. We provide the most current information on HSF1 structure, function, and regulation, emphasizing HD, and discussing its potential as a biological target for therapy. Data sources: We performed PubMed search to find established and recent reports in HSF1, heat shock proteins (Hsp), HD, Hsp inhibitors, HSF1 activators, and HSF1 in aging, inflammation, cancer, brain development, mitochondria, synaptic plasticity, polyglutamine (polyQ) diseases, and HD. Study selections: Research and review articles that described the mechanisms of action of HSF1 were selected based on terms used in PubMed search. Results: HSF1 plays a crucial role in the progression of HD and other protein-misfolding related neurodegenerative diseases. Different animal models of HD, as well as postmortem brains of patients with HD, reveal a connection between the levels of HSF1 and HSF1 dysfunction to mutant HTT (mHTT)-induced toxicity and protein aggregation, dysregulation of the ubiquitin-proteasome system (UPS), oxidative stress, mitochondrial dysfunction, and disruption of the structural and functional integrity of synaptic connections, which eventually leads to neuronal loss. These features are shared with other neurodegenerative diseases (NDs). Currently, several inhibitors against negative regulators of HSF1, as well as HSF1 activators, are developed and hold promise to prevent neurodegeneration in HD and other NDs. Conclusion: Understanding the role of HSF1 during protein aggregation and neurodegeneration in HD may help to develop therapeutic strategies that could be effective across different NDs.

Original languageEnglish (US)
Title of host publicationAdvances in Experimental Medicine and Biology
PublisherSpringer
Pages35-95
Number of pages61
DOIs
StatePublished - 2023

Publication series

NameAdvances in experimental medicine and biology
PublisherSpringer New York
ISSN (Print)0065-2598

Bibliographical note

Funding Information:
funded by NIH R01 NS110694 (to R.G.P.) and the University of Minnesota Medical School’s Biomedical Research Awards for Interdisciplinary New Science (BRAINS) program (to R.G.P.).

Publisher Copyright:
© 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.

Keywords

  • Aggregation
  • Heat shock factor (HSF1)
  • Heat shock proteins (Hsp)
  • Huntington’s diseases (HD)
  • Mitochondria
  • Heat Shock Transcription Factors/genetics
  • Protein Aggregates
  • Huntington Disease/pathology
  • Neurodegenerative Diseases/genetics
  • Huntingtin Protein
  • Animals
  • Mammals/metabolism
  • Heat-Shock Proteins/genetics
  • Disease Models, Animal

PubMed: MeSH publication types

  • Review
  • Journal Article

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