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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2-Hexyl-4-pentynoic acid
0 ImagesSynonyms: (±)-2-Hexyl-4-pentynoic acid2-Hexyl-4-pentynoic acid ((±)-2-Hexyl-4-pentynoic acid), a Valproic acid (HY-10585) derivative, exhibits potential roles of HDAC inhibition (IC50 = 13 μM) and HSP70 induction. 2-Hexyl-4-pentynoic acid causes histone hyperacetylation and protect against glutamate-induced excitotoxicity in cultured neurons. 2-Hexyl-4-pentynoic acid can be used for the study of breast carcinoma. 2-Hexyl-4-pentynoic acid is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
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PU-H39
0 ImagesCat. No.: HY-121723CAS No.: 852030-38-7PU-H39 is a selective Grp94 inhibitor with an IC50 of 0.12 μM. PU-H39 can be used for the research of breast cancer.
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Sodium acetate ringer's solution
0 ImagesCat. No.: HY-FL0001Synonyms: Ringer's acetate solutionSodium acetate ringer's solution is a solution containing sodium acetate, sodium citrate and electrolytes such as sodium, potassium, calcium and chloride, which can be used as a cell integrity protectant. Compared with sodium lactate ringer's solution, the advantage of sodium acetate ringer's solution lies in that the metabolism of acetic acid has less dependence on the liver, thus avoiding the side effect of lactate accumulation.
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(Rac)-Zearalanone-d6
0 ImagesCat. No.: HY-N6678SCAS No.: 1795020-90-4(Rac)-Zearalanone-d6 is the d6-labeled (Rac)-Zearalanone (HY-N6678A). (Rac)-Zearalanone is an ATP-competitive HSP90 inhibitor with an EC50 of 2.3 μM. (Rac)-Zearalanone interferes with the binding of ATP to HSP90, impairs the chaperone function of HSP90, and promotes the degradation of client proteins. (Rac)-Zearalanone reduces intracellular accumulation of Raf-1, induces cleavage of caspase-3, and promotes Her2 degradation in a dose-dependent manner by disrupting the Her2-HSP90 interaction. (Rac)-Zearalanone can be used in the research of small cell lung cancer and breast cancer.
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Hsp90-Cdc37-IN-4
0 ImagesCat. No.: HY-174347CAS No.: 2758818-41-4Hsp90-Cdc37-IN-4, a Celastrol (HY-13067) derivative, inhibits the Hsp90-Cdc37 protein-protein interaction (PPI). Hsp90-Cdc37-IN-4 selectively inhibits casein kinase 2 (CK2), reducing phosphorylation of its substrate Cdc37 at Serine 13. Hsp90-Cdc37-IN-4 induces G0/G1 cell cycle arrest and triggers apoptosis via the mitochondrial pathway. Hsp90-Cdc37-IN-4 demonstrates potent anti-breast cancer activity.
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Palmitic acid-d17
0 ImagesCat. No.: HY-N0830S14CAS No.: 81462-28-4Palmitic acid-d17 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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Tamoxifen-13C6
0 ImagesCat. No.: HY-W778408CAS No.: 1346606-38-9Synonyms: ICI 47699-13C6; (Z)-Tamoxifen-13C6; trans-Tamoxifen-13C6Tamoxifen-13C6 (ICI 47699-13C6) is the 13C-labeled Tamoxifen (HY-13757A). Tamoxifen (ICI 47699) is an orally active, selective estrogen receptor modulator (SERM) which blocks estrogen action in breast cells and can activate estrogen activity in other cells, such as bone, liver, and uterine cells. Tamoxifen is a potent Hsp90 activator and enhances the Hsp90 molecular chaperone ATPase activity. Tamoxifen also potent inhibits infectious EBOV Zaire and Marburg (MARV) with IC50 of 0.1 μM and 1.8 μM, respectively. Tamoxifen activates autophagy and induces apoptosis. Tamoxifen also can induce gene knockout of CreER transgenic mouse.
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Metalnikowin I
0 ImagesCat. No.: HY-P11396CAS No.: 172430-37-4Synonyms: MetIMetalnikowin I (MetI) is a proline-rich antimicrobial peptide and DnaK inhibitor. Metalnikowin I can be derived from insects.
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S1g-10
0 ImagesS1g-10 is a Hsp70/Bim inhibitor, and shows antitumor activity in chronic myeloid leukemia cells.
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6BrCaQ-C10-TPP
0 ImagesCat. No.: HY-144831CAS No.: 3036044-73-96BrCaQ-C10-TPP is a potent mitochondrial heat shock protein TRAP1 inhibitor, with antiproliferative activity in various human cancer cells (IC50=0.008-0.30 μM). 6BrCaQ-C10-TPP can also induces mitochondrial membrane disturbance.
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PU3
0 ImagesCat. No.: HY-121881CAS No.: 352519-21-2PU3 is an Hsp90 inhibitor that competes with geldanamycin (GM) and others for the conserved ATP/ADP pocket of Hsp90. PU3 also induces degradation of proteins such as Her2 and inhibits breast cancer cell growth by causing retinoblastoma protein hypophosphorylation, G1 arrest, and cell differentiation. PU3 has the potential to be a cancer inhibitor..
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Azadiradione
0 ImagesCat. No.: HY-N9615CAS No.: 26241-51-0Azadiradione is a bioactive limonoid found in Azadirachta indica. Azadiradione is a HSF1 activator. Azadiradione has antimycobacterial, anti-nociceptive and anti-inflammatory activities.
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BMS-358233
0 ImagesCat. No.: HY-120625CAS No.: 601519-75-9PU3 is a small molecule inhibitor of Hsp90 that competes with geldanamycin for Hsp90. PU3 induces degradation of proteins, including Her2, similar to geldanamycin. PU3 inhibits the growth of breast cancer cells, causing retinoblastoma protein hypophosphorylation, G1 arrest, and differentiation. PU3 represents a novel class of synthetic compounds that bind to Hsp90 and inhibit the proliferation of cancer cells. PU3 could provide a new strategy for the treatment of cancers.
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Palmitic acid-d4-2
0 ImagesCat. No.: HY-N0830S13CAS No.: 75736-57-1Palmitic acid-d4-2 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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(+)-Rocaglamide
0 ImagesCat. No.: HY-19356BCAS No.: 1699754-37-4(+)-Rocaglamide is the dextrorotatory enantiomer of Rocaglamide (HY-19356). 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.
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Flavokawain 1i
0 ImagesCat. No.: HY-149780CAS No.: 1098176-51-2Synonyms: DiNap
