An Emerging Link in Stem Cell Mobilization Between Activation of the Complement Cascade and the Chemotactic Gradient of Sphingosine-1-phosphate
Overview
Affiliations
Under steady-state conditions, hematopoietic stem/progenitor cells (HSPCs) egress from bone marrow (BM) and enter peripheral blood (PB) where they circulate at low levels. Their number in PB, however, increases significantly in several stress situations related to infection, organ/tissue damage, or strenuous exercise. Pharmacologically mediated enforced egress of HSPCs from the BM microenvironment into PB is called "mobilization", and this phenomenon has been exploited in hematological transplantology as a means to obtain HSPCs for hematopoietic reconstitution. In this review we will present the accumulated evidence that innate immunity, including the complement cascade and the granulocyte/monocyte lineage, and the PB plasma level of the bioactive lipid sphingosine-1-phosphate (S1P) together orchestrate this evolutionarily conserved mechanism that directs trafficking of HSPCs.
Janneh A, Kassir M, Atilgan F, Lee H, Sheridan M, Oleinik N Cell Rep. 2022; 41(10):111742.
PMID: 36476873 PMC: 9791981. DOI: 10.1016/j.celrep.2022.111742.
Endothelial progenitor cells in the host defense response.
Shi X, Seidle K, Simms K, Dong F, Chilian W, Zhang P Pharmacol Ther. 2022; 241:108315.
PMID: 36436689 PMC: 9944665. DOI: 10.1016/j.pharmthera.2022.108315.
Hsu C, Suk C, Hsu Y, Chang J, Liu C, Huang S Respir Res. 2022; 23(1):63.
PMID: 35307030 PMC: 8935698. DOI: 10.1186/s12931-022-01991-1.
Circulating sphingosine-1-phosphate as a prognostic biomarker for community-acquired pneumonia.
Hsu S, Chang J, Hsu Y, Bai K, Huang S, Hsu C PLoS One. 2019; 14(5):e0216963.
PMID: 31091284 PMC: 6519827. DOI: 10.1371/journal.pone.0216963.
Jadczyk T, Baranski K, Syzdol M, Nabialek E, Wanha W, Kurzelowski R Mediators Inflamm. 2018; 2018:2691934.
PMID: 30116144 PMC: 6079520. DOI: 10.1155/2018/2691934.