Transmembrane integrin-associated protein functions as a potent innate immunity checkpoint and is upregulated by many types of malignant cells, including melanoma during tumor progression. Binding of to its target receptor, SIRPα, on myeloid cell lineages leads to the initiation of the downstream signaling cascades that inhibit innate immunity anti-tumor responses. Molecular mechanisms underlying upregulation of during melanoma progression remain largely unknown. In this report, we performed ATAC-Sequencing on patient-derived melanoma cells, as well as, the analysis of ATAC-Seq datasets covering clinical melanoma samples to demonstrate a significant increase in chromatin accessibility for the promoter region in comparison to normal cells and tissues. Additionally, profiling of multiple transcript isoforms established that upregulation of in malignant cells occurs at the mRNA level. Using chromatin immunoprecipitation (ChIP) approaches along with the analysis of ChIP-Seq cancer datasets, we identified the transcription factor NRF-1 which binds at multiple sites within the proximal promoter region. In combination with serial deletions of promoter, we defined the minimal DNA region required for its activation, as well as, specific DNA locations within that region, which are preferentially occupied by NRF-1 in tumor cells.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11685207 | PMC |
http://dx.doi.org/10.3389/fimmu.2024.1495032 | DOI Listing |
CNS Neurosci Ther
January 2025
Jiujiang Clinical Precision Medicine Research Center, Jiujiang, Jiangxi, China.
Background: Adenosine deaminase action on RNA 1 (ADAR1) can convert the adenosine in double-stranded RNA (dsRNA) molecules into inosine in a process known as A-to-I RNA editing. ADAR1 regulates gene expression output by interacting with RNA and other proteins; plays important roles in development, including growth; and is linked to innate immunity, tumors, and central nervous system (CNS) diseases.
Results: In recent years, the role of ADAR1 in tumors has been widely discussed, but its role in CNS diseases has not been reviewed.
EMBO J
January 2025
Philips Institute for Oral Health Research, School of Dentistry, Virginia Commonwealth University, Richmond, VA, USA.
The complement system and neutrophils constitute the two main pillars of the host innate immune defense against infection by bacterial pathogens. Here, we identify T-Mac, a novel virulence factor of the periodontal pathogen Treponema denticola that allows bacteria to evade both defense systems. We show that T-Mac is expressed as a pre-protein that is cleaved into two functional units.
View Article and Find Full Text PDFFish Shellfish Immunol
January 2025
State Key Laboratory of Mariculture Breeding, Key Laboratory of Marine Biotechnology of Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, PR China; University Key Lab for Integrated Chinese Traditional and Western Veterinary Medicine and Animal Healthcare in Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, PR China. Electronic address:
Dietary Astragalus polysaccharides (APS) get wide application in aquaculture due to their excellent immunoregulatory effects. However, little is known about the effects of dietary APS on vaccine potency in fish. In the present study, large yellow croakers (Larimichthys crocea) were injected with formalin-inactivated Pseudomonas plecoglossicida after APS feeding for 14 d and then challenged by live P.
View Article and Find Full Text PDFCell Rep Med
December 2024
Capital Institute of Pediatrics, Beijing 100020, China. Electronic address:
We have previously reported that high-alcohol-producing Klebsiella pneumoniae (HiAlc Kpn) in the gut can cause endo-alcoholic fatty liver disease. Here, we discover that 91.2% of Kpn isolates from pulmonary disease samples also produce excess ethanol, which may be associated with respiratory disease severity.
View Article and Find Full Text PDFTransl Oncol
January 2025
Department of Biological Sciences, Research Center of Ecomimetics, Chonnam National University, Gwangju 61186, South Korea. Electronic address:
Ataxia Telangiectasia Mutated (ATM) is a protein kinase traditionally known for its role in DNA damage response and cell cycle regulation. However, emerging research has revealed its multifaceted and crucial functions in the immune system. This comprehensive review explores the diverse roles of ATM in immune regulation, from lymphocyte development to its involvement in cancer immunotherapy.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!