PMID- 26170030 OWN - NLM STAT- MEDLINE DCOM- 20160428 LR - 20210202 IS - 1528-0020 (Electronic) IS - 0006-4971 (Linking) VI - 126 IP - 10 DP - 2015 Sep 3 TI - Inflammation rapidly reorganizes mouse bone marrow B cells and their environment in conjunction with early IgM responses. PG - 1184-92 LID - 10.1182/blood-2015-03-635805 [doi] AB - Systemic inflammation perturbs the bone marrow environment by evicting resident B cells and favoring granulopoiesis over lymphopoiesis. Despite these conditions, a subset of marrow B cell remains to become activated and produce potent acute immunoglobulin M (IgM) responses. This discrepancy is currently unresolved and a complete characterization of early perturbations in the B-cell niche has not been undertaken. Here, we show that within a few hours of challenging mice with adjuvant or cecal puncture, B cells accumulate in the bone marrow redistributed away from sinusoid vessels. This response correlates with enhanced sensitivity to CXC chemokine ligand 12 (CXCL12) but not CXCL13 or CC chemokine ligand 21. Concurrently, a number of B-cell survival and differentiation factors are elevated to produce a transiently supportive milieu. Disrupting homing dynamics with a CXC chemokine receptor 4 inhibitor reduced the formation of IgM-secreting cells. These data highlight the rapidity with which peripheral inflammation modifies the marrow compartment, and demonstrate that such modifications regulate acute IgM production within this organ. Furthermore, our study indicates that conversion to a state of emergency granulopoiesis is temporally delayed, allowing B cells opportunity to respond to antigen. CI - (c) 2015 by The American Society of Hematology. FAU - Moreau, Joshua M AU - Moreau JM AD - Department of Immunology, University of Toronto, Toronto, ON, Canada; Ontario Cancer Institute, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; FAU - Berger, Alexandra AU - Berger A AD - Ontario Cancer Institute, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; FAU - Nelles, Megan E AU - Nelles ME AD - Ontario Cancer Institute, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; FAU - Mielnik, Michael AU - Mielnik M AD - Ontario Cancer Institute, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; Department of Medical Biophysics and. FAU - Furlonger, Caren AU - Furlonger C AD - Ontario Cancer Institute, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; FAU - Cen, Selena Y AU - Cen SY AD - Department of Immunology, University of Toronto, Toronto, ON, Canada; Ontario Cancer Institute, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; FAU - Besla, Rickvinder AU - Besla R AD - Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada; and. FAU - Robbins, Clinton S AU - Robbins CS AD - Department of Immunology, University of Toronto, Toronto, ON, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada; and Peter Munk Cardiac Centre, Toronto General Research Institute, Toronto, ON, Canada. FAU - Paige, Christopher J AU - Paige CJ AD - Department of Immunology, University of Toronto, Toronto, ON, Canada; Ontario Cancer Institute, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; Department of Medical Biophysics and. LA - eng GR - Canadian Institutes of Health Research/Canada PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150713 PL - United States TA - Blood JT - Blood JID - 7603509 SB - IM MH - Adoptive Transfer MH - Animals MH - B-Lymphocytes/*immunology MH - Bone Marrow/immunology MH - Bone Marrow Cells/*immunology MH - Disease Models, Animal MH - Enzyme-Linked Immunosorbent Assay MH - Flow Cytometry MH - Inflammation/*immunology MH - Lymphocyte Activation/*immunology MH - Lymphopoiesis/*immunology MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout EDAT- 2015/07/15 06:00 MHDA- 2016/04/29 06:00 CRDT- 2015/07/15 06:00 PHST- 2015/03/20 00:00 [received] PHST- 2015/07/03 00:00 [accepted] PHST- 2015/07/15 06:00 [entrez] PHST- 2015/07/15 06:00 [pubmed] PHST- 2016/04/29 06:00 [medline] AID - S0006-4971(20)30953-8 [pii] AID - 10.1182/blood-2015-03-635805 [doi] PST - ppublish SO - Blood. 2015 Sep 3;126(10):1184-92. doi: 10.1182/blood-2015-03-635805. Epub 2015 Jul 13.