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Distinct progenitor origin distinguishes a lineage of dendritic-like cells in spleen.
Frontiers in Immunology (2013)
  • Sawang Petvises, Australian National University
  • Helen O'Neill, Australian National University
The dendritic cell (DC) compartment comprises subsets of cells with distinct phenotypes. Previously this lab reported methodology for hematopoiesis of dendritic-like cells in vitro dependent on a murine splenic stromal cell line (5G3). Co-cultures of lineage-depleted bone marrow (Lin- BM) over 5G3 continuously produced a distinct population of dendritic-like "L-DC" for up to 35 days. Here the progenitor of L-DC is investigated in relation to known BM-derived hematopoietic progenitors. It is shown here that L-DC-like cells also derive from the CD150+Flt3- long-term reconstituting-hematopoietic stem cells (HSC), and also from the Flt3+ multipotential progenitor subset in BM. Lin- BM co-cultures also produce a transient population of cells resembling conventional (c) DC. Production of cDC-like cells is shown here to be transient and M-CSF dependent, and also appears following co-culture of described common dendritic progenitors or monocyte dendritic progenitors over 5G3. BM cells from C57BL/6-flt3Ltm1lmx and C57BL/6-Csf2tm1Ard mice which lack cDC precursors and monocytes, are shown here to contain L-DC progenitors which can seed 5G3 co-cultures. L-DC are functionally distinct cells, in that they arise independently of M-CSF, and by direct differentiation from HSC.
  • dendritic,
  • cell,
  • Hematopoiesis,
  • progenitor,
  • stroma
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© Copyright, The Authors , 2014 Creative Commons 4.0 License
Citation Information
Sawang Petvises and Helen O'Neill. "Distinct progenitor origin distinguishes a lineage of dendritic-like cells in spleen." Frontiers in Immunology Vol. 501 (2013)
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