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Effects of CC, CXC, C, and CX 3 C Chemokines on Proliferation of Myeloid Progenitor Cells, and Insights into SDF‐1‐Induced Chemotaxis of Progenitors a
Author(s) -
BROXMEYER HAL E.,
KIM CHANG H.,
COOPER SCOTT H.,
HANGOC GIAO,
HROMAS ROBERT,
PELUS LOUI M.
Publication year - 1999
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1111/j.1749-6632.1999.tb08460.x
Subject(s) - ccl7 , chemokine , chemotaxis , progenitor cell , cxc chemokine receptors , microbiology and biotechnology , eotaxin , immunology , chemistry , chemokine receptor , biology , stem cell , receptor , inflammation , biochemistry
A bstract : Chemokines have been implicated in the regulation of stem/progenitor cell proliferation and movement. The purpose of the present study was to assess a number of new chemokines for suppressive activity and to delve further into SDF‐1‐mediated chemotaxis of progenitor cells. This report extends the list of chemokines that have suppressive activity against immature subsets of myeloid progenitors stimulated to proliferate by multiple growth factors to include: MCP‐4/CKβ‐10, MIP‐4/CKβ‐7, I‐309, TECK, GCP‐2, MIG and lymphotactin. The suppressive activity of a number of other chemokines was confirmed. Additionally, pretreatment of the active chemokines with an acetylnitrile solution enhanced specific activity of a number of these chemokines. The new chemokines found to be lacking suppressive activity include: MCP‐2, MCP‐3, eotaxin‐1, MCIF/HCC‐1/CKβ‐1, TARC, MDC, MPIF‐2/eotaxin‐2/CKβ‐6, SDF‐1 and fractalkine/neurotactin. Overall, 19 chemokines, crossing the CC, CXC, and C subgroups, have now been found to be myelosuppressive, and 14 chemokines crossing the CC, CXC and CX 3 C subgroups have been found to lack myelosuppressive activity under the culture conditions of our assays. Because of the redundancy in chemokine/chemokine receptor interactions, it is not yet clear through which chemokine receptors many of these chemokines signal to elicit suppressive activities. It was also found that SDF‐1‐induced chemotaxis of progenitors can occur in the presence of fibronectin (FN) and extracellular matrix components and that FN effects involve activation of β 1 ‐, and possibly α 4 ‐, integrins.