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Members of the heat shock factor (HSF) family are evolutionarily conserved regulators that share a highly homologous DNA-binding domain. In mammals, HSF1 is the main factor controlling the stress-inducible expression of Hsp genes while the functions of HSF2 and HSF4 are less clear. Based on its developmental profile of expression, it was hypothesized that HSF2 may play an essential role in brain and heart development, spermatogenesis, and erythroid differentiation. To directly assess this hypothesis and better understand the underlying mechanisms that require HSF2, we generated Hsf2 knockout mice. Here, we report that Hsf2(-/-) mice are viable and fertile and exhibit normal life span and behavioral functions. We conclude that HSF2, most probably because its physiological roles are integrated into a redundant network of gene regulation and function, is dispensable for normal development, fertility, and postnatal psychomotor function.
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http://dx.doi.org/10.1128/MCB.22.22.8005-8014.2002 | DOI Listing |
J Virol
September 2025
National Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, China.
Japanese encephalitis virus (JEV) is a significant flavivirus that poses a threat to public health, as it induces encephalitis in humans and reproductive disorders in sows. We have recently identified that zinc finger protein 33B (ZNF33B) is required for JEV infection by CRISPR-based functional genomic screening, yet the precise functions and mechanisms are not fully comprehended. In this study, ZNF33B was found to be involved in JEV infection, wherein it bound with JEV RNA to enhance its stability during replication.
View Article and Find Full Text PDFJ Biochem Mol Toxicol
September 2025
Department of Rehabilitation Medicine, The Second Affiliated Hospital of Anhui Medical University, Hefei, China.
Heat shock protein family A member 4-like (HSPA4L) has been shown to be overexpressed in osteoarthritis (OA) patients, but its role in OA process still unknown. Chondrocytes were stimulated with interleukin-1β (IL-1β) to mimic OA cell model in vitro, and rat was injected with monosodium iodoacetate (MIA) to construct OA rat model in vivo. The expression of HSPA4L, methyltransferase-like 3 (METTL3) and extracellular matrix (ECM)-related markers was examined by qRT-PCR or western blot.
View Article and Find Full Text PDFJ Integr Neurosci
August 2025
Neurology Department, Neurology Neurophysiology Center, 1180 Vienna, Austria.
Anticancer Drugs
September 2025
Department of Blood and Marrow Transplantation, Tianjin Cancer Hospital Airport Hospital, National Clinical Research Center for Cancer.
Bortezomib resistance in multiple myeloma (MM) is a significant clinical challenge that limits the long-term effectiveness. Currently, there is a lack of reliable biomarkers to predict bortezomib resistance. Previous studies reported that several proteins regulate bortezomib resistance through targeting ubiquitin-proteasome pathways, including heat shock protein family A member 9 (HSPA9), dickkopf Wnt signaling pathway inhibitor 1 (DKK1), proteasome 26S subunit non-ATPase 14 (PSMD14), and tripartite motif containing 21 (TRIM21).
View Article and Find Full Text PDFPhysiol Plant
September 2025
Centre of Molecular and Environmental Biology (CBMA), Department of Biology, School of Sciences of the University of Minho, Braga, Portugal.
The Mediterranean Basin, a hotspot for tomato production, is one of the most vulnerable areas to climate change, where rising temperatures and increasing soil and water salinization represent major threats to agricultural sustainability. Thus, to understand the molecular mechanisms behind plant responses to this stress combination, an RNA-Seq analysis was conducted on roots and shoots of tomato plants exposed to salt (100 mM NaCl) and/or heat (42°C, 4 h each day) stress for 21 days. The analysis identified over 8000 differentially expressed genes (DEGs) under combined stress conditions, with 1716 DEGs in roots and 2665 in shoots being exclusively modulated in response to this specific stress condition.
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