{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T02:10:50Z","timestamp":1790647850154,"version":"4.1.0"},"reference-count":41,"publisher":"Life Science Alliance, LLC","issue":"10","license":[{"start":{"date-parts":[[2026,7,13]],"date-time":"2026-07-13T00:00:00Z","timestamp":1783900800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["life-science-alliance.org"],"crossmark-restriction":true},"short-container-title":["Life Sci. Alliance"],"accepted":{"date-parts":[[2026,7,1]]},"published-print":{"date-parts":[[2026,10]]},"abstract":"<jats:p>\n                    The unique cytoskeletal protein Septin7 is generally considered to be required for cytokinesis in yeast and mammals. Whole-body genetic ablation of\n                    <jats:italic>Septin7<\/jats:italic>\n                    in mice is embryonically lethal.\n                    <jats:italic>Septin7-<\/jats:italic>\n                    deficient fibroblasts and HeLa cells are defective in cytokinesis and undergo obligate multinucleation. Surprisingly, lymphocyte- and myeloid-specific deletion of Septin7 in mice caused no detectable defects in blood lineage development, indicating dispensability of Septin7 for hematopoiesis. However,\n                    <jats:italic>Septin7<\/jats:italic>\n                    -deficient hematopoietic stem cells failed to engraft and establish donor chimerism after transplantation. To reconcile these contradictory findings, we examined the consequences of Septin7 deletion at distinct stages of hematopoiesis. Our results demonstrate that Cre-induced deletion of the floxed\n                    <jats:italic>Septin7<\/jats:italic>\n                    allele is inefficient during the early stages of hematopoiesis, suggesting strong selection pressure against Septin7 deficiency at this stage. In contrast, deletion of\n                    <jats:italic>Septin7<\/jats:italic>\n                    at the common lymphoid progenitor stage, as well as in\n                    <jats:italic>Hoxb8<\/jats:italic>\n                    -immortalized hematopoietic progenitors, is efficient and does not result in any noticeable defects in cell division. Taken together, our findings indicate that Septin7 is essential during early hematopoiesis but becomes dispensable at later stages.\n                  <\/jats:p>","DOI":"10.26508\/lsa.202603637","type":"journal-article","created":{"date-parts":[[2026,7,13]],"date-time":"2026-07-13T18:20:17Z","timestamp":1783966817000},"page":"e202603637","update-policy":"https:\/\/doi.org\/10.26508\/lsa.crossmarkpolicy","source":"Crossref","is-referenced-by-count":1,"title":["Septin7 is essential in early hematopoiesis, but redundant at later stages"],"prefix":"10.26508","volume":"9","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6350-700X","authenticated-orcid":true,"given":"Natalia","family":"Ronkina","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00f2yqf98","id-type":"ROR","asserted-by":"publisher"}],"name":"Institute of Cell Biochemistry, Hannover Medical School","place":[", Hannover, Germany"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nikita 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