CD86-based analysis enables observation of bona fide hematopoietic responses

Author:

Kanayama Masashi1ORCID,Izumi Yuta1,Yamauchi Yasuharu12,Kuroda Shoko1,Shin Takaei1,Ishikawa Shun1,Sato Taku1,Kajita Mihoko13,Ohteki Toshiaki1ORCID

Affiliation:

1. Department of Biodefense Research, Medical Research Institute, Tokyo Medical and Dental University (TMDU), Tokyo, Japan;

2. SONY Imaging Products & Solutions, Inc, Tokyo, Japan; and

3. Japan Society for the Promotion of Science (JSPS), Tokyo, Japan

Abstract

Abstract Hematopoiesis is a system that provides red blood cells (RBCs), leukocytes, and platelets, which are essential for oxygen transport, biodefense, and hemostasis; its balance thus affects the outcome of various disorders. Here, we report that stem cell antigen-1 (Sca-1), a cell surface marker commonly used for the identification of multipotent hematopoietic progenitors (Lin−Sca-1+c-Kit+ cells; LSKs), is not suitable for the analysis of hematopoietic responses under biological stresses with interferon production. Lin−Sca-1−c-Kit+ cells (LKs), downstream progenitors of LSKs, acquire Sca-1 expression upon inflammation, which makes it impossible to distinguish between LSKs and LKs. As an alternative and stable marker even under such stresses, we identified CD86 by screening 180 surface markers. The analysis of infection/inflammation-triggered hematopoiesis on the basis of CD86 expression newly revealed urgent erythropoiesis producing stress-resistant RBCs and intact reconstitution capacity of LSKs, which could not be detected by conventional Sca-1–based analysis.

Publisher

American Society of Hematology

Subject

Cell Biology,Hematology,Immunology,Biochemistry

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