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Many patients with antiphospholipid syndrome had decreased ectonucleotidase activity on neutrophils and platelets, which enabled extracellular nucleotides to trigger neutrophil-platelet aggregates. This phenotype was replicated by treating healthy neutrophils and platelets with patient-derived antiphospholipid antibodies or ectonucleotidase inhibitors.
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http://dx.doi.org/10.1182/blood.2023022097 | DOI Listing |
Front Immunol
August 2025
Department of Clinical Microbiology, Umeå University, Umeå, Sweden.
Background: Tuberculosis (TB), caused by (Mtb), remains a global health crisis complicated by immune dysregulation and T cell exhaustion. CD39, an ectonucleotidase generating immunosuppressive adenosine, is implicated in cancer and chronic infections, yet its spatiotemporal role in TB pathogenesis remains unclear.
Methods: Multiple publicly available datasets were utilized to evaluate CD39 across TB disease stages, diverse infectious diseases and anti-TB treatment.
Cell Death Dis
August 2025
Department of Medical Sciences, Section of Experimental Medicine, University of Ferrara, Ferrara, Italy.
Extracellular vesicle-driven cancer metastasis represents a therapeutic challenge due to the lack of effective blocking drugs. Our study shows that activation of the P2X7 receptor on colon carcinoma cells causes the release of vesicles carrying CD39 and CD73 ectonucleotidases. These vesicles increase ATP and adenosine levels and, when in vivo administered, significantly enhance colon carcinoma metastasis and circulating levels of vesicles after fourteen days from their injection.
View Article and Find Full Text PDFNeurochem Int
October 2025
Breathing Research and Therapeutics Center, Department of Physical Therapy & McKnight Brain Institute, University of Florida, Gainesville, FL, USA.
Cervical spinal cord injuries (cSCI) are associated with decreased breathing ability. Although no treatment options are currently available, moderate acute intermittent hypoxia (mAIH) is a promising therapeutic modality to improve breathing function after cSCI. Moderate AIH elicits phrenic motor plasticity via distinct, competing serotonin- or adenosine-driven mechanisms that interact via powerful crosstalk inhibition that constrains or even abolishes plasticity.
View Article and Find Full Text PDFInt J Mol Sci
July 2025
Postgraduate Program in Biomedical Science, Federal University of Fronteira Sul, Chapecó 89815-899, SC, Brazil.
Pituitary neuroendocrine tumors (PitNETs) are the most common intracranial tumors. Evidence suggests that these types of tumors may have high recurrence rates. In this context, the purinergic system, oxidative stress, and inflammation are important signaling pathways involved in the cancer's pathophysiology.
View Article and Find Full Text PDFMucosal Immunol
July 2025
Center for Immunity and Inflammation, Department of Pathology, Immunology and Laboratory Medicine, Rutgers New Jersey Medical School, Newark, NJ, USA; Department of Pathology, Molecular and Cell-Based Medicine and Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY,
Intraepithelial lymphocytes expressing the γδ T cell receptor (γδ IEL) provide continuous surveillance of the intestinal epithelium. We report that mice harboring a microbiota-specific hyperproliferative γδ IEL (γδ) phenotype also upregulate the expression of the ectonucleotidase CD39, a marker of regulatory γδ T cells. Enhanced TCR and IL-15 signaling correlates with a progression from a naïve-like CD39 γδ IEL to a more mature, tissue-adapted CD39 IEL population.
View Article and Find Full Text PDF