Spontaneous Release of B Lymphocyte-Enhancing Factors for Growth and Differentiation by YH-1 Cells in Serum-Free Culture Media : Identification of Interleukin 1 Activities : Immunology
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概要
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The partially purified fraction of the serum-free culture medium conditioned by a human embryo fibroblast cell strain (YH-1) significantly enhanced proliferative responses and polyclonal antibody (immunogrobulin M and G) production by murine and human B lymphocytes. This fraction did not show significant interleukin 2 or interferon activity. The B cell-enhancing activity by the YH-1 fibroblast-derived fraction was almost completely inactivated by the treatment with the antisera against human interleukin 1 α and β. In additon, thymocyte proliferative responses by this fraction were also suppressed by the same antisera. These results indicate that the factors released from YH-1 cells are similar to interleukin 1. The biological significance of this finding is discussed from the viewpoint the immunological regulation between fibroblasts and lymphocytes.
- 社団法人日本動物学会の論文
著者
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Ishizaka Shigeaki
3rd Department Of Internal Medicine Nara Medical College
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Okai Yasuji
Tokyo Research Labs. Kyowa Hakko Kogyo Co.:(present)department Of Molecular Genetics Beckman Researc