Transplanted spleen stromal cells with osteogenic potential support ectopic myelopoiesis

Autoři: Helen C. O’Neill aff001;  Hong K. Lim aff001;  Pravin Periasamy aff002;  Lavanya Kumarappan aff002;  Jonathan K. H. Tan aff001;  Terence J. O’Neill aff004
Působiště autorů: Clem Jones Research Centre for Regenerative Medicine, Bond University, Gold Coast, Queensland, Australia aff001;  Research School of Biology, Australian National University, Canberra, Australian Capital Territory, Australia aff002;  Department of Microbiology, Yoo Long School of Medicine, National University of Singapore, Singapore, Singapore aff003;  Big Data Centre, Bond Business School, Bond University, Gold Coast, Queensland, Australia aff004
Vyšlo v časopise: PLoS ONE 14(10)
Kategorie: Research Article


Spleen stromal lines which support in vitro hematopoiesis are investigated for their lineage origin and hematopoietic support function in vivo. Marker expression and gene profiling identify a lineage relationship with mesenchymal stem cells and perivascular reticular cells described recently in bone marrow. Stromal lines commonly express Cxcl12, Pdgfra and Pdgfr typical of bone marrow derived perivascular reticular cells but reflect a unique cell type in terms of other gene and marker expression. Their classification as osteoprogenitors is confirmed through ability to undergo osteogenic, but not adipogenic or chondrogenic differentiation. Some stromal lines were shown to form ectopic niches for HSCs following engraftment under the kidney capsule of NOD/SCID mice. The presence of myeloid cells and a higher representation of a specific dendritic-like cell type over other myeloid cells within grafts was consistent with previous in vitro evidence of hematopoietic support capacity. These studies reinforce the role of perivascular/perisinusoidal reticular cells in hematopoiesis and implicate such cells as niches for hematopoiesis in spleen.

Klíčová slova:

Cell differentiation – Cell staining – Flow cytometry – Gene expression – Spleen – Stromal cells – Bone marrow cells – Hematopoiesis


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