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Targeted cytotoxic effect of anti-JL1 immunotoxin against a human leukemic cell line and its clinical implications

Cited 16 time in Web of Science Cited 15 time in Scopus
Authors
Shin, Young Kee; Choi, Yoon La; Choi, Eun Young; Kim, Min Kyung; Kook, Myeong-Cherl; Chung, Junho; Choi, Yang-Kyu; Kim, Heung Sik; Song, Hyung Geun; Park, Seong Hoe
Issue Date
2003
Publisher
Springer Verlag
Citation
Cancer Immunol Immunother; Vol.52, No.8; pp.506-512
Keywords
JL1LeukemiaImmunotoxinGelonin
Abstract
We have previously reported the identification of a unique thymocyte-specific surface molecule, JL1, which was detected using the monoclonal antibody (mAb), anti-JL1. Interestingly, JL1 was shown to be expressed in most leukemias, irrespective of their immunophenotype, and subpopulations of normal bone marrow (BM) mononuclear cells (MNCs). Here we investigated the potential usefulness of the anti-JL1 mAb as a therapeutic tool for leukemia. We demonstrated that the roliferation of cultured human leukemia cells was dramatically inhibited in vitro by anti-JL1 mAb conjugated with the polypeptide toxin, gelonin, but not by gelonin alone. We then systematically investigated the reactivity of the anti-JL1 mAb against normal human tissues to evaluate possible side effects along with various hematopoietic and nonhematopoietic tumor cell lines. All of 33 types of normal tissues except thymus and subpopulation of BM MNCs were clearly devoid of JL1 expression. Among tumor cell lines, all the nonhematopoietic cell lines tested were negative for JL1 expression, while some hematopoietic cell lines contained JL1 antigen. Collectively, the results showed the cytotoxic effects of anti-JL1-based immunotoxin against JL1-positive leukemic cells, sparing most normal tissues other than thymocytes and some BM MNCs. Therefore, we strongly suggest that gelonin-conjugated anti-JL1 mAb immunotoxin could be developed as a potential immunotherapeutic agent in the treatment of various types of JL1-positive acute leukemias.
ISSN
1432-0851
Language
English
URI
http://hdl.handle.net/10371/73408
DOI
https://doi.org/10.1007/s00262-003-0374-y
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College of Pharmacy (약학대학)Dept. of Pharmacy (약학과)Journal Papers (저널논문_약학과)
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