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Expression or Leukemia-Associated Anigen, JL1, in Bone Marrow and Thymus

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Affiliated Author(s)
김흥식
Alternative Author(s)
Kim, Heung Sik
Journal Title
American Journal of Pathology
ISSN
0002-9440
Issued Date
2001
Abstract
The identification of immunophenotypic markers with restricted expression has long been a critical issue in diagnostic and therapeutic advances for acute leukemias. We previously developed a monoclonal antibody against a new thymocyte surface antigen, JL1, and showed that JL1 is expressed in the majority of acute leukemia cases. In this study, using multiparameter flow cytometric analyses, we found that JL1 was uniquely expressed in subpopulations of normal bone marrow (BM) cells, implying the association of JL1 with the differentiation and maturation process. Although CD34+ CD10+ lymphoid precursors and some of maturing myeloid cells express JL1, neither CD34+ CD38−/lo nor CD34+ AC133+ noncommitted pluripotent stem cells do. As for the myeloid precursors, CD34+ CD33+ cells do not express JL1. During lymphopoiesis, JL1 on the earliest lymphoid precursors disappear in the CD20+ sIgM+ stage of B-cell development or after CD1a down-regulation in thymocytes. Despite the highly restricted expression of JL1 in normal BM cells, most of the leukemias express JL1 irrespective of their immunophenotypes. These results indicate that JL1 is not only a novel differentiation antigen of hematopoietic cells, but also a leukemia-associated antigen. Therefore, we suggest that JL1 be a candidate molecule in acute leukemia for the diagnosis and immunotherapy that spares the normal BM stem cells.
Department
Dept. of Pediatrics (소아청소년학)
Publisher
School of Medicine
Citation
Young Kee Shin et al. (2001). Expression or Leukemia-Associated Anigen, JL1, in Bone Marrow and Thymus. American Journal of Pathology, 158(4), 1473–1480.
Type
Article
ISSN
0002-9440
URI
https://kumel.medlib.dsmc.or.kr/handle/2015.oak/34938
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Pediatrics (소아청소년학)
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