کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5666729 | 1591538 | 2017 | 12 صفحه PDF | دانلود رایگان |
- Long-term culture of mouse splenocytes with GM-CSF produces CD11bâºCD11c⺠cells.
- Growth of splenocytes in the culture with GM-CSF is independent of FLT3/FLT3L signaling.
- CD11bâºCD11câºMHC IIhi cells from the culture exhibit authentic morphology and function of dendritic cells.
Dendritic cells (DCs) are routinely produced from the culture of mouse bone marrow (BM) with granulocyte-macrophage colony-stimulating factor (GM-CSF) within a period of 10 days. Although splenic extramedullary myelopoiesis was suggested to occur under the influence of GM-CSF, the hematopoietic outcome of splenic culture with GM-CSF has not been scrutinized. We have cultured mouse splenocytes with GM-CSF for an extended period of time, where we discovered that the CD11bâºCD11c⺠cells began to proliferate prominently after 10 days and their number increased until the 4th week of the culture. In parallel experiments, FMS-like tyrosine kinase 3 (FLT3) and its ligand, FLT3L, were not found to influence the culture of splenocytes. Like DCs in the culture of BM with GM-CSF, a distinct population of CD11bâºCD11câºMHC IIhi cells was readily identified as DCs in the long-term culture of splenocytes. After being isolated and plated overnight the CD11bâºCD11câºMHC IIhi cells exhibited non-adherent dendritic morphology, while the other CD11bâºCD11c⺠cells became adherent. Besides, these CD11bâºCD11câºMHC IIhi cells possessed relatively weak endocytic and phagocytic abilities but displayed strong antigen-presenting capacities, revealing DC-like characteristics; in contrast, the other CD11bâºCD11c⺠cells showed strong endocytosis and phagocytosis of antigens but were poor at antigen presentation, indicating macrophage-like traits. Therefore, we demonstrated that phenotypically as well as functionally genuine DCs are generated in the long-term culture of splenocytes with GM-CSF.
Journal: Immunology Letters - Volume 188, August 2017, Pages 96-107