High mobility group (HMG) proteins are an abundant class of chromosomal proteins facilitate assembly of higher order structures. The mammalian HMG proteins have been grouped into three distinct families on the basis of their characteristic functional sequence: the HMGB, the HMGN, and the HMGA family. The HMG proteins of Drosophila melanogaster and Chironomus tentans are the best characterized dipteran insect HMG proteins. Three abundant members of this group of nonhistone proteins were detected in those insects. Two of them belong to the HMGB family and one to the HMGA family. The possible relatedness of these proteins to the formation of higher order nucleoprotein structures and their possible role in the regulation of transcription is discussed.
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http://dx.doi.org/10.1023/b:bigi.0000006030.05308.04 | DOI Listing |
Front Immunol
January 2025
The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, United States.
Sepsis is a life-threatening organ dysfunction resulting from a dysregulated host response to infections that is initiated by the body's innate immune system. Nearly a decade ago, we discovered that bacterial lipopolysaccharide (LPS) and serum amyloid A (SAA) upregulated Connexin 43 (Cx43) and Pannexin 1 (Panx1) hemichannels in macrophages. When overexpressed, these hemichannels contribute to sepsis pathogenesis by promoting ATP efflux, which intensifies the double-stranded RNA-activated protein kinase R (PKR)-dependent inflammasome activation, pyroptosis, and the release of pathogenic damage-associated molecular pattern (DAMP) molecules, such as HMGB1.
View Article and Find Full Text PDFJ Oral Pathol Med
January 2025
Departamento de Diagnóstico Oral, Área de Semiologia e Patologia Oral, Faculdade de Odontologia de Piracicaba, Universidade Estadual de Campinas (FOP-UNICAMP), Piracicaba, Brazil.
Background: Rhabdomyosarcoma (RMS), a rare malignant tumor, frequently affects pediatric patients, with 35%-40% occurring in the head and neck. This study analyzes the clinicopathologic profile of pediatric head and neck rhabdomyosarcomas from Brazil, Guatemala, Mexico, and South Africa.
Methods: We reviewed 44 cases from 10 Oral and Maxillofacial Pathology services, conducting immunohistochemical analyses of desmin, myogenin, Myo-D1, and Ki67, with quantification via QuPath software.
J Inflamm (Lond)
January 2025
Department of Thoracic Surgery, the Second Xiangya Hospital of Central South University, No.139 Middle Renmin Road, Hunan Province, 410011, Changsha, People's Republic of China.
Cell Tissue Res
January 2025
College of Life Science, Henan Normal University, No. 46, Jianshe Road, Xinxiang 453007, Henan, China.
Sox genes encode a family of transcription factors that regulate multiple biological processes during metazoan development, including embryogenesis, tissue homeostasis, nervous system specification, and stem cell maintenance. The planarian Dugesia japonica contains a reservoir of stem cells that grow and divide continuously to support cellular turnover. However, whether SOX proteins retain these conserved functions in planarians remains to be determined.
View Article and Find Full Text PDFLife Sci
January 2025
Agroprocessing and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695019, Kerala, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India. Electronic address:
Rheumatoid arthritis (RA) is a chronic inflammatory disease where pain, driven by both inflammatory and non-inflammatory processes, is a major concern for patients. This pain can persist even after joint inflammation subsides. High mobility group box-1 (HMGB1) is a non-histone-DNA binding protein located in the nucleus that plays a key role in processes such as DNA transcription, recombination, and replication.
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