HSP
Heat shock proteins (HSPs) are molecular chaperones that support proteostasis by preventing protein misfolding and aggregation during nascent-chain folding and cellular stress[1]. Mechanistically, HSP70 acts upstream on nascent and newly synthesized polypeptides, while HSP90 supports folding and maturation of selected client proteins through coordinated chaperone cycles[1][2]. In cancer models, HSP90 buffers oncogenic signaling proteins and enables malignant cells to tolerate imbalanced signaling, making HSP90 inhibition a practical strategy for disrupting multiple client pathways[3][4]. Compared with ATP-dependent HSP70/HSP90 systems, HSP27/HSPB1 is a small heat shock protein whose oligomer-monomer dynamics regulate chaperone activity and whose redox-sensitive monomers suppress aggregation in vitro[5]. HSP27 also regulates apoptosis by interacting with cytochrome c and blocking downstream apoptotic complex formation, supporting its use in cell-death and stress-response experiments[6]. For experimental applications, HSP90 inhibitors provide tools to test client-protein dependence, while HSP27-focused assays can examine aggregation control, redox stress, and apoptosis regulation[4][5][6].
References:
- [1]. Hartl FU, et al. Molecular chaperones in the cytosol: from nascent chain to folded protein. Science. 2002 Mar 8;295(5561):1852-8. [Content Brief]
- [2]. Dahiya V, et al. The switch from client holding to folding in the Hsp70/Hsp90 chaperone machineries is regulated by a direct interplay between co-chaperones. Mol Cell. 2022 Apr 21;82(8):1543-1556.e6. [Content Brief]
- [3]. Whitesell L, et al. HSP90 and the chaperoning of cancer. Nat Rev Cancer. 2005 Oct;5(10):761-72. [Content Brief]
- [4]. Neckers L, et al. Hsp90 molecular chaperone inhibitors: are we there yet? Clin Cancer Res. 2012;18(1):64-76.
- [5]. Alderson TR, et al. Local unfolding of the HSP27 monomer regulates chaperone activity. Nat Commun. 2019 Mar 6;10(1):1068. [Content Brief]
- [6]. Bruey JM, et al. Hsp27 negatively regulates cell death by interacting with cytochrome c. Nat Cell Biol. 2000 Sep;2(9):645-52. [Content Brief]
All Product Categories
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HSP Related Products (239)
Related Products (239)
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Antibodies (7)
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Apidaecin IA acetate
0 ImagesCat. No.: HY-P5721AApidaecin IA acetate is a basic peptide. Apidaecin IA acetate inhibits the enzymatic activity of DnaK. Apidaecin IA acetate induces bacterial cell death. Apidaecin IA acetate can be used in research related to peritonitis and bacterial infections.
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Hsp90-Cdc37-IN-2
0 ImagesCat. No.: HY-130624CAS No.: 2413849-81-5Hsp90-Cdc37-IN-2 (Compound 41) is an inhibitor for the interaction between heat shock protein 90 (Hsp90) and cyclin 37 (Cdc37). Hsp90-Cdc37-IN-2 inhibits the proliferation of cancer cell A549, MCF-7, HOS and HepG2 with IC50 of 0.41-0.94 μM. Hsp90-Cdc37-IN-2 decreases the mitochondrial membrane potential, induces apoptosis, and arrest cell cycle at G0/G1 phase in A549.
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CH5164840
0 ImagesCat. No.: HY-15990CAS No.: 1052645-73-4CH5164840 (16) shows high binding affinity for N-terminal Hsp90a (Kd = 0.52 nM) and strong anti-proliferative activity against human cancer cell lines (HCT116 IC50 = 0.15 μM, NCI-N87 IC50 = 0.066 μM). CH5164840 (16) is orally active (t1/2 = 2.64 h) with potent antitumor efficacy.
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HA15-Biotin
0 ImagesCat. No.: HY-139009CAS No.: 1965310-52-4HA15-Biotin is a chemical probe that consists of HA15 and biotin attached on the amide part of HA15. HA15-Biotin exhibits similar levels of activity to HA15. HA15-Biotin can be used for proteomic analysis.
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17-Demethoxy-reblastatin
0 ImagesCat. No.: HY-164372CAS No.: 299173-64-1Synonyms: 17-DR17-Demethoxy-reblastatin (17-DR) is an inhibitor for heat shock protein 90 (Hsp90), with an IC50 of 1.82 μM for yeast Hsp90 ATPase. 17-Demethoxy-reblastatin inhibits the proliferation of cancer cell HepG2 and SMMC7721, reduces the colony formation, and induces apoptosis through mitochondria and caspase mediated pathway.
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Palmitic acid-13C8 sodium
0 ImagesCat. No.: HY-N0830BS4CAS No.: 1173021-50-5Palmitic acid-13C8 sodium is the 13C-labeled Palmitic acid sodium (HY-N0830B). Palmitic acid sodium is a long-chain saturated fatty acid commonly found in both animals and plants. Palmitic acid sodium can induce the expression of glucose-regulated protein 78 (GRP78) and CCAAT/enhancer binding protein homologous protein (CHOP) in in mouse granulosa cells. Palmitic acid sodium is used to establish a cell steatosis model .
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NDNA3
0 ImagesCat. No.: HY-149432NDNA3 (compound 14) is a selective inhibitor of Hsp90α (IC50: 0.51 μM). NDNA3 is a permanently charged analog with low membrane permeability and low toxicity to Ovcar-8 (IC50: 12.66 μM) and MCF-10A (IC50: 11.72 μM) cells. NDNA3 prevents disruption of hERG channel maturation without generating a heat shock response or causing degradation of Hsp90α-dependent client proteins.
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HSP90-IN-19
0 ImagesCat. No.: HY-152028CAS No.: 2927442-48-4HSP90-IN-19 is an effective heat shock protein 90 (Hsp90) inhibitor. HSP90-IN-19 has effective Hsp90 inhibitory activity with an IC50 value of 0.27 μM. HSP90-IN-19 can be used for the research of viral infection, neurodegenerative disease, and inflammation.
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Palmitic acid-d2-4
0 ImagesCat. No.: HY-N0830S17CAS No.: 30719-28-9Palmitic acid-d2-4 is the deuterium labeled Palmitic acid. Palmitic acid is a long-chain saturated fatty acid commonly found in both animals and plants. PA can induce the expression of glucose-regulated protein 78 (GRP78) and CCAAT/enhancer binding protein homologous protein (CHOP) in in mouse granulosa cells.
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Cucurbitacin D (Standard)
0 ImagesCucurbitacin D (Standard) is the analytical standard of Cucurbitacin D. This product is intended for research and analytical applications. Cucurbitacin D is the active ingredient in Trichosanthes kirilowii and can disrupt the interaction between Hsp90 and two co-chaperones, Cdc37 and p23. Cucurbitacin D is an inflammasome activator. Cucurbitacin D induces cell cycle arrest and cell apoptosis, exhibiting anti-tumor and anti-inflammatory effects.
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Palmitic acid-d2-2
0 ImagesCat. No.: HY-N0830S15CAS No.: 272442-14-5Palmitic acid-d2-2 is the deuterium labeled Palmitic acid. Palmitic acid is a long-chain saturated fatty acid commonly found in both animals and plants. PA can induce the expression of glucose-regulated protein 78 (GRP78) and CCAAT/enhancer binding protein homologous protein (CHOP) in in mouse granulosa cells.
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Isoxazole (Standard)
0 ImagesCat. No.: HY-W010649RCAS No.: 288-14-2Amfenac (Sodium Hydrate) (Standard) is the analytical standard of Amfenac (Sodium Hydrate). This product is intended for research and analytical applications. Amfenac Sodium Hydrate is a COX-2 inhibitor.
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Palmitic acid-d5
0 ImagesPalmitic acid-d5 is the deuterium labeled Palmitic acid. Palmitic acid is a long-chain saturated fatty acid commonly found in both animals and plants. PA can induce the expression of glucose-regulated protein 78 (GRP78) and CCAAT/enhancer binding protein homologous protein (CHOP) in in mouse granulosa cells.
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HSP90-IN-18
0 ImagesCat. No.: HY-152027CAS No.: 2927442-45-1HSP90-IN-18 is an effective heat shock protein 90 (Hsp90) inhibitor. HSP90-IN-18 has effective Hsp90 inhibitory activity with an IC50 value of 0.39 μM. HSP90-IN-18 can be used for the research of viral infection, neurodegenerative disease, and inflammation.
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Vicanicin
0 ImagesCat. No.: HY-N15449CAS No.: 33211-22-2Vicanicin is a depsidone compound found in lichens. Vicanicin inhibits the expression of Hsp70, regulates the redox-sensitive mechanisms within cells, promotes the increase of reactive oxygen species (ROS) in cancer cells, changes the Bax/Bcl-2 ratio, activates caspase-3, and triggers apoptosis. Vicanicin inhibits cell growth and induces apoptosis in androgen-sensitive (LNCaP) and androgen-insensitive (DU-145) human prostate cancer cells. Vicanicin is promising for research of prostate cancer.
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Palmitic acid-15,15,16,16,16-d5
0 ImagesPalmitic acid-15,15,16,16,16-d5 is the deuterium labeled Palmitic acid. Palmitic acid is a long-chain saturated fatty acid commonly found in both animals and plants. PA can induce the expression of glucose-regulated protein 78 (GRP78) and CCAAT/enhancer binding protein homologous protein (CHOP) in in mouse granulosa cells.
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FKBP51-Hsp90-IN-1
0 ImagesCat. No.: HY-158130CAS No.: 433313-64-5FKBP51-Hsp90-IN-1 (Compound D10) is a selective inhibitor of the FKBP51-Hsp90 protein-protein interaction, with an IC50 value of 0.1 μM against FKBP51. FKBP51-Hsp90-IN-1 can be used in the research of stress-related diseases, Alzheimer's disease, and metabolic disorders.
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KUNG29
0 ImagesCat. No.: HY-120800CAS No.: 1887032-92-9KUNG29 is a potent and selective Grp94 inhibitor with a Kd of 0.2 μM. KUNG29 induces the degradation of integrin α2 in MDA-MB-231 cells.
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HSP70/DnaK substrate peptide
0 ImagesCat. No.: HY-P10541CAS No.: 156343-40-7HSP70/DnaK substrate peptide is a short peptide that the HSP70/DnaK molecular chaperone can bind and act on. HSP70/DnaK substrate peptide can be used to study the mechanism of action of HSP70/DnaK in molecular chaperone function.
