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The Hedgehog gene (Hh) was first discovered due to its control of the growth of disorganized, hair-like bristles phenotype in Drosophila, much like hedgehog spines. Hh plays a crucial role in the development of organs and the maintenance of homeostasis in both invertebrates and vertebrates. However, while Drosophila has only one Hh protein, mammals have multiple functional Hedgehog proteins - Sonic (Shh), Desert (Dhh), and Indian Hedgehog (Ihh). All of these homologous proteins have adapted to...
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Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits.  Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl...
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HSF1 Activation Mechanisms, Disease Roles, and Small Molecule Therapeutics.

Bingwei Zhang1,2, Yumei Fan1, Ke Tan1

  • 1Ministry of Education Key Laboratory of Molecular and Cellular Biology; Hebei Research Center of the Basic Discipline of Cell Biology, Hebei Collaborative Innovation Center for Eco-Environment, Hebei Province Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, China.

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|June 16, 2025
PubMed
Summary

Heat shock factor 1 (HSF1) regulates cellular stress responses. Modulating HSF1 with small molecules offers a promising therapeutic strategy for diseases like cancer, with numerous inhibitors and activators identified.

Keywords:
HSF1activatorscancerinhibitorstherapeutic strategy

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Area of Science:

  • Molecular Biology
  • Cellular Stress Response
  • Drug Discovery

Background:

  • Heat shock factor 1 (HSF1) is a key regulator of heat shock proteins (HSPs).
  • HSF1 dysfunction is implicated in diseases, including cancer.
  • Targeting HSF1 with small molecules is a potential therapeutic avenue.

Purpose of the Study:

  • To review the mechanisms of human HSF1 activation.
  • To explore HSF1's role in disease pathogenesis.
  • To summarize known HSF1 inhibitors and activators for therapeutic development.

Main Methods:

  • Comprehensive literature review on HSF1.
  • Analysis of HSF1 regulatory mechanisms (post-translational modifications, protein interactions).
  • Cataloging of small molecule modulators (inhibitors and activators).

Main Results:

  • HSF1 activation involves complex regulatory networks.
  • HSF1 plays a significant role in various disease etiologies.
  • Numerous synthetic and natural compounds targeting HSF1 have been identified.

Conclusions:

  • Understanding HSF1 activation mechanisms is crucial for therapeutic intervention.
  • Small molecules targeting HSF1 show potential for treating diverse human diseases.
  • This review provides insights for designing novel HSF1-targeted therapies.