{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,7]],"date-time":"2026-10-07T16:01:30Z","timestamp":1791388890733,"version":"4.3.3"},"reference-count":58,"publisher":"American Society for Cell Biology (ASCB)","issue":"24","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["MBoC"],"published-print":{"date-parts":[[2018,11,26]]},"abstract":"<jats:p>Hematopoietic stem and progenitor cell (HSPC) transplantation represents a treatment option for patients with malignant and nonmalignant hematological diseases. Initial steps in transplantation involve the bone marrow homing and engraftment of peripheral blood\u2013injected HSPCs. In recent work, we identified the tetraspanin CD82 as a potential regulator of HSPC homing to the bone marrow, although its mechanism remains unclear. In the present study, using a CD82 knockout (CD82KO) mouse model, we determined that CD82 modulates HSPC bone marrow maintenance, homing, and engraftment. Bone marrow characterization identified a significant decrease in the number of long-term hematopoietic stem cells in the CD82KO mice, which we linked to cell cycle activation and reduced stem cell quiescence. Additionally, we demonstrate that CD82 deficiency disrupts bone marrow homing and engraftment, with in vitro analysis identifying further defects in migration and cell spreading. Moreover, we find that the CD82KO HSPC homing defect is due at least in part to the hyperactivation of Rac1, as Rac1 inhibition rescues homing capacity. Together, these data provide evidence that CD82 is an important regulator of HSPC bone marrow maintenance, homing, and engraftment and suggest exploiting the CD82 scaffold as a therapeutic target for improved efficacy of stem cell transplants.<\/jats:p>","DOI":"10.1091\/mbc.e18-05-0305","type":"journal-article","created":{"date-parts":[[2018,8,22]],"date-time":"2018-08-22T16:10:55Z","timestamp":1534954255000},"page":"2946-2958","source":"Crossref","is-referenced-by-count":24,"title":["The tetraspanin CD82 regulates bone marrow homing and engraftment of hematopoietic stem and progenitor cells"],"prefix":"10.1091","volume":"29","author":[{"given":"Chelsea A.","family":"Saito-Reis","sequence":"first","affiliation":[{"name":"Department of Pathology, University of New Mexico Health Science Center, University of New Mexico, Albuquerque, NM 87131"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kristopher 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