Abstract:
:The α-chemokine CXCL12 (stromal derived factor-1; SDF-1) and its corresponding G(αI) protein-coupled CXCR4 receptor axis play an important role in retention of hematopoietic stem progenitor cells (HSPCs) in bone marrow (BM) stem cell niches. CXCL12 has also been identified as a strong chemoattractant for HSPCs and implicated both in homing of HSPCs to BM after transplantation and in egress of these cells from BM into peripheral blood (PB). However, since CXCL12, as a peptide, is highly susceptible to degradation by proteolytic enzymes, its real biological availability in biological fluids may be somewhat limited. In this review, we will present data demonstrating that the CXCL12-CXCR4 axis is positively modulated by innate immunity-derived several external factors, ensuring that even low (near threshold) doses of CXCL12 still exert a robust chemotactic influence on HSPCs.
journal_name
Theranosticsjournal_title
Theranosticsauthors
Ratajczak MZ,Serwin K,Schneider Gdoi
10.7150/thno.4621subject
Has Abstractpub_date
2013-01-01 00:00:00pages
3-10issue
1issn
1838-7640pii
thnov03p0003journal_volume
3pub_type
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