2. Signaling Pathways
  3. Cell Cycle/DNA Damage
    Metabolic Enzyme/Protease
  4. HSP
  5. HSF1 Isoform

HSF1

Heat Shock Factor 1 (HSF1) functions as a master transcriptional regulator, maintaining cellular proteostasis under stress conditions[1][2]. Mechanistically, HSF1 activation induces heat shock proteins (HSPs), which assist in protein folding, prevent misfolding, and modulate apoptosis pathways[3][2][1]. In metabolic contexts, HSF1 regulates lipid homeostasis through the HSF1-CPT1a axis, influencing hepatic fat accumulation in non-alcoholic fatty liver disease (NAFLD) models[4]. Compared with other isoforms, HSF1 specifically activates transcriptional networks distinct from HSP-independent stress responses, including the FOXO3a-ΔNp63α-CDK4 axis in head and neck squamous cell carcinoma (HNSCC)[5]. In pediatric hepatoblastoma, elevated HSF1 correlates with tumor aggressiveness and decreased differentiation, while its inhibition induces apoptosis and reduces tumor growth[6]. Pharmacological modulation of HSF1, either through activators or inhibitors, demonstrates potential for experimental applications: inhibitors such as KRIBB11 or PU-H71 can suppress HSF1-dependent pathways, decreasing proliferation in cancer models, whereas HSF1 activation enhances inducible HSP expression in neurodegeneration studies[2][1][5][6]. The differential roles of HSF1 in disease versus normal physiology underscore its value as a target for isoform-specific drug development, enabling selective modulation of stress response pathways without broadly affecting related transcription factors[1][2][7]. Therefore, HSF1 serves as both a critical mechanistic node in cellular stress adaptation and a strategic intervention point for disease modeling and therapeutic exploration[1][5][6].

HSF1 Related Products (8):

Cat. No. Product Name Effect Purity
  • HY-19356
    Rocaglamide
    		Inhibitor 99.34%
    Rocaglamide (Roc-A) is isolated from the genus Aglaia and can be used for coughs, injuries, asthma and inflammatory skin diseases. Rocaglamide is a potent inhibitor of NF-κB activation in T-cells. Rocaglamide is a potent and selective heat shock factor 1 (HSF1) activation inhibitor with an IC50 of ~50 nM. Rocaglamide inhibits the function of the translation initiation factor eIF4A. Rocaglamide also has anticancer properties in leukemia.
  • HY-103000
    HSF1A
    		Activator 99.94%
    HSF1A is a cell-permeable activator of heat shock transcription factor 1 (HSF1). HSF1A also acts as a specific inhibitor of TRiC/CCT. Chaperonin TCP-1 ring complex (TRiC)/chaperonin containing TCP-1 (CCT) plays a pivotal role in toxin translocation and/or refolding.
  • HY-100872
    KRIBB11
    		Inhibitor 99.69%
    KRIBB11 is an inhibitor of Heat shock factor 1 (HSF1), with IC50 of 1.2 μM.
  • HY-145927
    NXP800
    		Inhibitor 99.86%
    NXP800 (CCT361814) is a potent and orally active heat shock factor 1 (HSF1) pathway inhibitor. NXP800 has the potential for cancer research.
  • HY-149127
    Rosolutamide
    		Activator 99.03%
    Rosolutamide (ASC-JM17) is an orally active Nrf1/Nrf2 activator. Rosolutamide activates Hsf1 pathways, upregulates proteasome subunits and antioxidant enzymes, induces proteasome complex structural rearrangement, and enhances ubiquitin-proteasome system-mediated degradation. Rosolutamide reduces mutant androgen receptor and ataxin-3 aggregates, restores mitochondrial function, attenuates reactive oxygen species (ROS) levels, induces apoptosis and ferroptosis, and inhibits cancer cell growth. Rosolutamide can be used for the research of spinal and bulbar muscular atrophy, Huntington’s disease, and temozolomide-resistant glioblastoma.
  • HY-W224634
    HSF1-IN-2
    		Inhibitor
    HSF1-IN-2 (Compound 0048) is a HSF1 inhibitor. HSF1-IN-2 is applicable to cancer research.
  • HY-N17756
    Withanolide D
    Withanolide D (Compound 2) is a steroidal ester found in Withania somnifera (L.) Dunal, with anticancer activity. Withanolide D can activate the heat-shock factor 1 (HSF1)-dependent stress response. Withanolide D can be used for the research of cancer such as lymphoma.
  • HY-164184
    Ly101-4B
    		Inhibitor
    Ly101-4B is an apoptosis inducer and multi-target inhibitor with antiproliferative, antitumor and cycytotoxic effects. Ly101-4B reduces HSF1 expression, inhibits microRNA-214 synthesis, downregulates HSP27, HSP70 and HSP90 expression, while suppressing E2F-dependent transcriptional activity and downregulating its target genes. Ly101-4B induces caspase 3/7-mediated apoptosis by reducing DNA synthesis, inhibiting the cell cycle and G1/S phase transition, without affecting RNA synthesis or inducing necrosis. Ly101-4B is selective for pancreatic ductal adenocarcinoma cells with different genotypes and varying degrees of E2F dependence. Ly101-4B can be used in research related to epithelial ovarian cancer and pancreatic ductal adenocarcinoma.
Cat. No. Product Name / Synonyms Application Reactivity