Neutrophil progenitor populations of rhesus macaques

Journal of Leukocyte Biology: An Official Publication of the Reticuloendothelial Society

Logan J. Vosler^1¹  Kim L. Weisgrau^1²  Nicholas L. Pomplun^1³ 

[1] Clinical Pathology Unit Wisconsin National Primate Research Center University of Wisconsin‐Madison Madison Wisconsin USA^2;Immunology Services Unit Wisconsin National Primate Research Center University of Wisconsin‐Madison Madison Wisconsin USA^1;Pathobiological Sciences School of Veterinary Medicine University of Wisconsin‐Madison Madison Wisconsin USA^3

关键词: bone marrow;    immunophenotype;    neutrophil progenitors;    rhesus macaque;   

DOI  :  10.1002/JLB.1TA1117-431RR

学科分类：生理学

来源: Federation of American Societies for Experimental Biology

【 摘 要 】

Captive‐bred rhesus macaques of Indian origin represent one of the most important large animal models for infectious disease, solid organ transplantation, and stem cell research. There is a dearth of information defining hematopoietic development, including neutrophil leukocyte differentiation in this species using multicolor flow cytometry. In the current study, we sought to identify cell surface markers that delineate neutrophil progenitor populations with characteristic immunophenotypes. We defined four different postmitotic populations based on their CD11b and CD87 expression pattern, and further refined their immunophenotypes using CD32, CD64, lactoferrin, and myeloperoxidase as antigenic markers. The four subsets contained myelocyte, metamyelocyte, band, and segmented neutrophil populations. We compared our flow cytometry‐based classification with the classical nuclear morphology‐based classification. We found overlap of immunological phenotype between populations of different nuclear morphology and identified phenotypically different subsets within populations of similar nuclear morphology. We assessed the responsiveness of these populations to stimulatory signals, such as LPS, fMLP, or PMA, and demonstrated significant differences between human and rhesus macaque neutrophil progenitors. In this study, we provided evidence for species‐specific features of granulopoiesis that ultimately manifested in the divergent immunophenotypes of the fully differentiated segmented neutrophils of humans and rhesus macaques. Additionally, we found functional markers that can be used to accurately quantify neutrophil progenitors by flow cytometry. Although these markers do not coincide with the classical nuclear‐morphology‐based grading, they enable us to perform functional studies monitoring immunophenotypic markers.

【 授权许可】

CC BY