TY - JOUR
T1 - XRhythmic modulation of the hematopoietic niche through neutrophil clearance
AU - Casanova-Acebes, María
AU - Pitaval, Christophe
AU - Weiss, Linnea A.
AU - Nombela-Arrieta, César
AU - Chèvre, Raphaël
AU - A-González, Noelia
AU - Kunisaki, Yuya
AU - Zhang, Dachuan
AU - Van Rooijen, Nico
AU - Silberstein, Leslie E.
AU - Weber, Christian
AU - Nagasawa, Takashi
AU - Frenette, Paul S.
AU - Castrillo, Antonio
AU - Hidalgo, Andrés
N1 - Funding Information:
We thank M. Nácher, J. Ogonek, I. Ortega, V. Zorita, M. Leboeuf, J.M. Ligos, and the Cellomics, Microscopy, and Comparative Medicine Units at CNIC for technical support; J. Garaude, D. Lucas, and A. Ramiro for critically reviewing the manuscript; and S. González and D. Sanz for reagents. This study was supported by Deutsche Forschungsgemeinschaft (DFG WE1913/11-2 and SFB914-B8) to C.W.; R01-DK056638 and R01-HL69438 to P.S.F.; grants SAF2008-00057 and SAF2011-29244 to A.C.; Ramón y Cajal Fellowship (RYC-2007-00697) and SAF2009-11037 from MINECO, S2010/BMD-2314 from Comunidad de Madrid, and FP7-People-IRG Program (246655) to A.H.; C.N-A. is funded by a Human Frontiers in Science Program long-term fellowship 00194/2008. M.C-A. is supported by a FPI fellowship from the Spanish Ministry of Economy and Competitivity. The Centro Nacional de Investigaciones Cardiovasculares is supported by the Spanish Ministry of Economy and Competitivity and the Pro-CNIC Foundation. M.C-A performed experiments and wrote the manuscript; L.A.W., C.P., and N.A-G performed experiments and edited the manuscript. C.N-A., R.C., Y.K., and D.Z. performed experiments; N.V.R., L.E.S., C.W., T.N., P.S.F., and A.C. contributed reagents, discussed experiments and helped in editing the manuscript; A.H. conceived the study, performed experiments and wrote the manuscript. C.P., L.A.W., and C.N-A. contributed equally to this study.
PY - 2013/5/23
Y1 - 2013/5/23
N2 - Unique among leukocytes, neutrophils follow daily cycles of release from and migration back into the bone marrow, where they are eliminated. Because removal of dying cells generates homeostatic signals, we explored whether neutrophil elimination triggers circadian events in the steady state. Here, we report that the homeostatic clearance of neutrophils provides cues that modulate the physiology of the bone marrow. We identify a population of CD62L LO CXCR4HI neutrophils that have "aged" in the circulation and are eliminated at the end of the resting period in mice. Aged neutrophils infiltrate the bone marrow and promote reductions in the size and function of the hematopoietic niche. Modulation of the niche depends on macrophages and activation of cholesterol-sensing nuclear receptors and is essential for the rhythmic egress of hematopoietic progenitors into the circulation. Our results unveil a process that synchronizes immune and hematopoietic rhythms and expand the ascribed functions of neutrophils beyond inflammation. PaperFlick
AB - Unique among leukocytes, neutrophils follow daily cycles of release from and migration back into the bone marrow, where they are eliminated. Because removal of dying cells generates homeostatic signals, we explored whether neutrophil elimination triggers circadian events in the steady state. Here, we report that the homeostatic clearance of neutrophils provides cues that modulate the physiology of the bone marrow. We identify a population of CD62L LO CXCR4HI neutrophils that have "aged" in the circulation and are eliminated at the end of the resting period in mice. Aged neutrophils infiltrate the bone marrow and promote reductions in the size and function of the hematopoietic niche. Modulation of the niche depends on macrophages and activation of cholesterol-sensing nuclear receptors and is essential for the rhythmic egress of hematopoietic progenitors into the circulation. Our results unveil a process that synchronizes immune and hematopoietic rhythms and expand the ascribed functions of neutrophils beyond inflammation. PaperFlick
UR - http://www.scopus.com/inward/record.url?scp=84878299390&partnerID=8YFLogxK
U2 - 10.1016/j.cell.2013.04.040
DO - 10.1016/j.cell.2013.04.040
M3 - Article
C2 - 23706740
AN - SCOPUS:84878299390
SN - 0092-8674
VL - 153
SP - 1025
JO - Cell
JF - Cell
IS - 5
ER -