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Establishment and characterization of a T‐lymphoblastoid cell line MDCC‐MTB1 derived from chick lymphocytes infected in vitro with marek's disease virus serotype 1
Author(s) -
Ikuta Kazuyoshi,
Nakajima Kazuhiro,
Kanamori Akihiro,
Maotani Kumiko,
Mah Jum Sool,
Ueda Shigeharu,
Kato Shiro,
Yoshida Mariko,
Nii Shiro,
Naito Matao,
NishidaUmehara Chizuko,
Sasaki Motomichi,
Hirai Kanji
Publication year - 1987
Publication title -
international journal of cancer
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.475
H-Index - 234
eISSN - 1097-0215
pISSN - 0020-7136
DOI - 10.1002/ijc.2910390419
Subject(s) - marek's disease , biology , virology , virus , lymphoblast , antigen , cell culture , microbiology and biotechnology , serotype , immunofluorescence , embryo , monoclonal antibody , antibody , immunology , genetics
Abstract Continuously proliferating T‐lymphoblastoid cells, named MDCC‐MTB1, were obtained by infection of chick embryo lymphocytes with Marek's disease virus serotype 1 (MDV1) in culture and subsequent cultivation in the presence of human interleukin 2 (IL‐2). The MTB1 cells have now been growing well for at least 4 months with a doubling time of about 10 hr, irrespective of the presence of IL‐2. The MTB1 cells show lymphoblastoid morphology, and carry T‐lymphocyte marker surface antigens and a karyotype of female chick origin with several abnormal chromosomes. Southern blot hybridization showed that they contain about 10 virus genome equivalents/cell of almost the whole MDV genome. Infectious virus could not be rescued from MTB1 cells by co‐cultivation of these with chick embryo fibroblasts. In addition, no virus particles were found in thin‐sectioned MTB1 cells by electron microscopy. An immunofluorescence test with monoclonal antibody (MAb) to MDV‐specific phosphorylated proteins showed that MTB1 cells expressed the MDV‐specific antigen in the cytoplasm only after the cells had been treated with 5‐iodo‐2‐deoxyuridine for 48 hr at 41 °C. MTB1 cells can form colonies in 0.33% soft agar, and can be transplanted into chicks by i.p. injection. Thus, continuously growing lymphoblastoid cells were obtained by in vitro infection of chick embryo lymphocytes with oncogenic MDV1 and cultivation of the cells in the presence of human IL‐2 during the transformation step. These cells appear to show a similar phenotype to an MD lymphoma‐derived cell line.