title: Characterization of murine macrophages from bone marrow, spleen and peritoneum.
abstract: BACKGROUND
  Macrophages have heterogeneous phenotypes and complex functions within both innate and adaptive immune responses. To date, most experimental studies have been performed on macrophages derived from bone marrow, spleen and peritoneum. However, differences among macrophages from these particular sources remain unclear. In this study, the features of murine macrophages from bone marrow, spleen and peritoneum were compared.
  
  
  RESULTS
  We found that peritoneal macrophages (PMs) appear to be more mature than bone marrow derived macrophages (BMs) and splenic macrophages (SPMs) based on their morphology and surface molecular characteristics. BMs showed the strongest capacity for both proliferation and phagocytosis among the three populations of macrophage. Under resting conditions, SPMs maintained high levels of pro-inflammatory cytokines expression (IL-6, IL-12 and TNF-α), whereas BMs produced high levels of suppressive cytokines (IL-10 and TGF-β). However, SPMs activated with LPS not only maintained higher levels of (IL-6, IL-12 and TNF-α) than BMs or PMs, but also maintained higher levels of IL-10 and TGF-β.
  
  
  CONCLUSIONS
  Our results show that BMs, SPMs and PMs are distinct populations with different biological functions, providing clues to guide their further experimental or therapeutic use.
authors: Centre for Transplant and Renal Research at Westmead, Sydney, NSW, Australia. cwan5402@uni.sydney.edu.au
authors: Changqi
authors: C
authors: Wang
authors: Xiao
authors: X
authors: Yu
authors: Qi
authors: Q
authors: Cao
authors: Ya
authors: Y
authors: Wang
authors: Guoping
authors: G
authors: Zheng
authors: Thian Kui
authors: TK
authors: Tan
authors: Hong
authors: H
authors: Zhao
authors: Ye
authors: Y
authors: Zhao
authors: Yiping
authors: Y
authors: Wang
authors: David Ch
authors: DCh
authors: Harris
mesh_terms: D000818:Animals; D017951:Antigen Presentation / Q000276:immunology; D001854:Bone Marrow Cells / Q000166:cytology*; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology; D002462:Cell Membrane / Q000378:metabolism; D049109:Cell Proliferation; D048430:Cell Shape; D002478:Cells, Cultured; D016207:Cytokines / Q000235:genetics / Q000378:metabolism; D003911:Dextrans / Q000378:metabolism; D005434:Flow Cytometry; D016650:Fluorescein-5-isothiocyanate / Q000031:analogs & derivatives / Q000378:metabolism; D005786:Gene Expression Regulation; D008213:Lymphocyte Activation / Q000276:immunology; D008264:Macrophages / Q000166:cytology* / Q000276:immunology; D017737:Macrophages, Peritoneal / Q000166:cytology*; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D010587:Phagocytosis / Q000276:immunology; D010641:Phenotype; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D013154:Spleen / Q000166:cytology*
chemical_list: D016207:Cytokines; D003911:Dextrans; D012333:RNA, Messenger; C015219:fluorescein isothiocyanate dextran; D016650:Fluorescein-5-isothiocyanate
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