Human HSP27 ELISA kit
- Known as:
- Human HSP27 Enzyme-linked immunosorbent assay test reagent
- Catalog number:
- LF-EK50641
- Product Quantity:
- 1
- Category:
- Elisa Kits
- Supplier:
- Abfron
- Gene target:
- Human HSP27 ELISA kit
Related genes to: Human HSP27 ELISA kit
- Gene:
- HSPB1 NIH gene
- Name:
- heat shock protein family B (small) member 1
- Previous symbol:
- -
- Synonyms:
- HSP27, HSP28, Hs.76067, Hsp25, CMT2F
- Chromosome:
- 7q11.23
- Locus Type:
- gene with protein product
- Date approved:
- 1991-07-09
- Date modifiied:
- 2019-04-23
Related products to: Human HSP27 ELISA kit
Related articles to: Human HSP27 ELISA kit
- During gestation, the myometrium remains relaxed but undergoes a phenotypic transformation near term that initiates labor. This coincides with increased expression of contraction-associated proteins (CAPs) and decreased expression of relaxation-associated proteins (RAPs), thereby promoting the development of powerful synchronous contractions that deliver the fetus. We do not yet fully understand the biochemical signaling pathways and physiological changes that occur as human myometrium transitions from a non-laboring to a laboring phenotype. An ex vivo model for the onset of human labor can expand our knowledge. This study aimed to assess whether non-laboring pregnant human myometrium in culture undergoes a phenotypic transformation that is consistent with transitioning toward a labor-like phenotype. Term, non-laboring pregnant human myometrium biopsies were collected. A small portion was immediately snap-frozen (0 h time point), while the remaining tissue was dissected into small pieces, incubated for 48 h in serum-free medium, and then snap-frozen. Changes in the mRNA abundance of key myometrial genes were assessed by qRT-PCR, and protein levels were quantified by Western blotting. Data were analyzed using GraphPad Prism. Myometrial expression of key CAPs, including GJA1, ESR1, PTGS2, NFκB1, NFκB3, IL1β, IL6, and AKR1C1, increased significantly, while expression of the RAPs, PLCL1, HSPB1, and HSPB6, was decreased significantly after 48 h of ex vivo culture. Term, non-laboring pregnant human myometrial explants undergo coordinated molecular remodeling during 48 h of ex vivo culture, with many changes paralleling those reported at term labor in vivo. These findings support prolonged explant culture as a model of the molecular transition toward a labor-like state, while also demonstrating that cultured non-laboring explants may no longer faithfully represent the original non-laboring phenotype. - Source: PubMed
Publication date: 2026/09/23
Paul MarinaBarreda Anna ParedesGregson AmyKing MadelineHossain Md ReduanulHussein Waleed MWalker Frederick RSmith RogerZakar TamasPaul Jonathan W - In numerous neurodegenerative diseases known collectively as tauopathies, the microtubule-associated protein tau forms fibrillar aggregates that are hallmarks of disease pathology. Tauopathies represent a substantial fraction of diseases associated with protein misfolding. Cellular chaperones known as small heat shock proteins (sHSPs) play a critical role in maintaining protein homeostasis by delaying the onset of protein aggregation. Two sHSPs, HSPB1 (Hsp27) and HSPB5 (αB-crystallin), are constitutively expressed in the brain and neurons. Here, we show that HSPB1 and HSPB5 delay tau aggregation in vitro through distinct mechanisms dictated by their disordered N-terminal regions (NTRs). HSPB1 inhibits tau aggregation under normal cellular conditions, whereas HSPB5 displays activity toward tau when activated by stress conditions such as pH acidosis. Using chimeric HSPB1/HSPB5 constructs in which small NTR subregions are swapped, we identify functional regions within the NTRs that modulate chaperone function for tau. The functional regions contain known sites of phosphorylation, suggesting that they are also control points that respond to cellular stress conditions. Our findings support an emerging model in which specific functional motifs within disordered regions of sHSPs govern activity and client engagement under normal and stress conditions. - Source: PubMed
Cervantes MiaJanowska Maria KTuttle Lisa MGuttman MiklosNath AbhinavKlevit Rachel E - Chronic stress activates the hypothalamic-pituitary-adrenal (HPA) axis and induces systemic physiological changes. This study aimed to identify stress-associated serum biomarker candidates in chronically stressed beagle dogs and to evaluate the anti-stress effects of var. (Maxim.) Kitam. extract (CZE). Beagle dogs were subjected to movement restriction-induced chronic stress for 42 days, with or without repeated oral administration of CZE. Serum cortisol and corticosterone concentrations were measured using ELISA, and hematological and serum biochemical parameters were analyzed. Serum samples collected at day 0 and day 42 of the 84-day chronic stress model were subjected to LC-MS/MS-based proteomic analysis. Chronic stress increased serum cortisol and corticosterone concentrations and induced alterations in hematological and serum biochemical parameters, whereas CZE administration tended to attenuate or stabilize these stress-associated changes. Proteomic analysis identified 380 serum proteins, of which 348 quantified proteins were subjected to differential expression analysis. The differentially expressed proteins were primarily associated with immune response, inflammatory response, extracellular matrix organization, angiogenesis, neurogenesis, and secretion. TIMP1, TREM2, RAB8A, KRT9, PPBP, THBS1, and HSPB1 were identified as candidate stress-associated serum biomarkers. These findings indicate that chronic stress induces endocrine, hematological, biochemical, and serum proteomic alterations in beagle dogs. Changes in proteins related to immune-inflammatory regulation and extracellular matrix organization suggest that prolonged stress may affect systemic immune responses and tissue remodeling. CZE may contribute to the maintenance of physiological homeostasis under chronic stress conditions and may have potential as a functional anti-stress material, while the identified serum proteins may provide a basis for the development of biomarkers for chronic stress. - Source: PubMed
Publication date: 2026/08/26
Yang Ye JinKim Min JungKim Hee HoHeo Ji WoongChun Ju LanShin Eui-CheolKim Kyeong SooKim Hyun-WookJeong Eun JuLee DongbinPark Kwang Il - Advanced CRC patients frequently accompanied by hepatic metastasis (HM). Malignant epithelial cells, as the core in metastasis, have not been fully investigated. This study investigates the role of malignant epithelial cells in CRC HM and its underlying mechanisms. - Source: PubMed
Publication date: 2026/09/12
Zhu WenlongDong AoHu RongbingZhou SileiYao JialiMa BinghuaDing JinZhang Yanjie - Canine malignant melanoma is an aggressive neoplasm with limited remedial options. Therefore, the development of novel antineoplastic agents is urgently needed. This study investigated the medicinal potential and molecular mechanisms of Roxb. essential oil (CEO) against canine melanoma. Phytochemical profiling via GC-MS identified 22 compounds, with monoterpenoids (90.99%) predominating, specifically sabinene (53.25%) and terpinen-4-ol (17.99%). CEO exhibited potent, concentration-dependent cytotoxicity across four canine melanoma cell lines, with a mean IC₅₀ of approximately 0.006% v/v. Quantitative proteomic mapping of CEO-treated M5 cells identified a total of 222 differentially expressed proteins associated with systemic cellular collapse. Key mechanisms included significant genotoxic stress (upregulation of H2AX and histone variants), endoplasmic reticulum stress (suppression of CALR and HSPB1), and the activation of a coordinated necroptosis/mitophagy axis (modulation of Drp1, VDAC, and p62). Protein-protein interaction network analysis further identified SLC2A1 as a central metabolic hub with high-confidence connectivity to conventional chemotherapies, suggesting that CEO-induced metabolic disruption converges onto core pathways targeted by 5-fluorouracil and imatinib. These findings suggest that CEO induces complex cell death signatures through coordinated nuclear and organelle stress. Ultimately, it should be considered as a promising candidate for future translational research and functional validation. - Source: PubMed
Publication date: 2026/08/26
Chongrattanameteekul PeerawitKe Chiao-HsuLin Chen-SiChuammitri PhongsakornMatchimakul PitchayaLumsangkul ChompunutOkonogi SiripornMektrirat Raktham