The Journal of Experimental Medicine
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Published online 10 April 2000.
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© The Rockefeller University Press, 0022-1007/2000/4/1303/ $5.00
The Journal of Experimental Medicine, Volume 191, Number 8, April 17, 2000 1303-1318


Original Article

Developmental Switches in Chemokine Response Profiles during B Cell Differentiation and Maturation

Edward P. Bowmana,b,c, James J. Campbella,b,c, Dulce Solerd, Zengjun Dongd, Natasha Manlongatd, Dominic Picarellad, Richard R. Hardye, and Eugene C. Butchera,b,c
a Laboratory of Immunology and Vascular Biology, Department of Pathology, Department of Medicine, Stanford University Medical School, Stanford, California 94305-5324
b Digestive Disease Center, Department of Medicine, Stanford University Medical School, Stanford, California 94305-5324
c Center for Molecular Biology and Medicine, Veterans Affairs, Palo Alto Health Care System, Palo Alto, California 94305
d Millennium Pharmaceuticals, Cambridge, Massachusetts 02142
e Institute for Cancer Research, Fox Chase Cancer Center, Philadelphia, Pennsylvania 19111

Correspondence to: Eugene C. Butcher, Department of Pathology (5324), Stanford University School of Medicine, Stanford, CA 94305-8444. Tel:650-852-3369 Fax:650-858-3986 E-mail:ebutcher{at}cmgm.stanford.edu.

Developing B cells undergo dramatic changes in their responses to chemoattractant cytokines (chemokines) and in expression of chemokine receptors. Bone marrow pre–pro-B cells (AA4.1+/natural killer 1.1- Fraction A cells) and cells capable of generating pro-B colonies in the presence of interleukin 7 and flt3 ligand migrate to thymus-expressed chemokine (TECK), a response lost in later stages of B cell development. B cell–attracting chemokine 1 (BCA-1) responses correlate with CXC chemokine receptor (CXCR)5 expression, are first displayed by a pro-B cell subset, are lost in pre-B cells, and then are regained just before and after egress from the marrow. All peripheral B cell subsets, including follicular and germinal center as well as marginal zone and peritoneal B1 B cells, respond to BCA-1, implying that responsiveness to this follicular chemokine is not sufficient to predict follicle localization. Responses to the CC chemokine receptor (CCR)7 ligands secondary lymphoid tissue chemoattractant (SLC) and macrophage inflammatory protein (MIP)-3ß, implicated in homing to lymphoid tissues, are upregulated before B cell exit from the marrow, but increase further in the periphery and are shared by all peripheral B cells. In contrast, responsiveness to MIP-3{alpha} and expression of CCR6 are acquired only after emigration to the periphery and during maturation into the recirculating B cell pool. Chemotaxis to stromal cell–derived factor 1{alpha} is observed at all stages of B cell differentiation. Thus, unique patterns of chemokine responses may help define developing B cell populations and direct their maturation in the marrow and migration to the periphery.

Key Words: B lymphocyte, chemokines, chemotaxis, bone marrow, hematopoiesis


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