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Interleukin-2 induced activation of natural killer cells in rats and mice: a comparative study.
Asian Pac J Allergy Immunol ; 1988 Dec; 6(2): 88-94
Article in English | IMSEAR | ID: sea-36793
ABSTRACT
Effects of interleukin-2 (IL-2) on the natural killer (NK) activities of BALB/c mouse and Wistar rat spleen cells were compared. While mouse spleen cells cultured alone rapidly lost NK activity, co-culture with IL-2 resulted in a marked enhancement of NK activity. In contrast, the levels of NK activity of rat spleen cells cultured alone increased and remained high for 3 days and declined thereafter. Addition of human recombinant IL-2 or purified rat IL-2 did not influence the NK levels in rat spleen cell bulk cultures. Both IL-2 preparations were however biologically active as shown by their capacities to induced proliferation in rat spleen cells. Rat spleen cells suppressed the IL-2 activation of mouse spleen cells in a dose dependent manner, indicating a suppressor influence generated by rat spleen cells. Culture supernatants of rat spleen cells cultured with or without IL-2 for 3 or 5 days could also suppress the mouse spleen NK activation in response to IL-2. The suppressor activity could be concentrated on a 5K MW cut-off Amicon filter indicating that the molecular weight of the factor is more than 5000. These results indicate that a suppressor of IL-2 induced NK activation of mouse spleen cells is released by cultured rat spleen cells.
Subject(s)
Full text: Available Index: IMSEAR (South-East Asia) Main subject: Rats / Rats, Inbred Strains / Spleen / Male / Killer Cells, Natural / Lymphocyte Activation / Interleukin-2 / Suppressor Factors, Immunologic / Cytotoxicity, Immunologic / Animals Language: English Journal: Asian Pac J Allergy Immunol Year: 1988 Type: Article

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Full text: Available Index: IMSEAR (South-East Asia) Main subject: Rats / Rats, Inbred Strains / Spleen / Male / Killer Cells, Natural / Lymphocyte Activation / Interleukin-2 / Suppressor Factors, Immunologic / Cytotoxicity, Immunologic / Animals Language: English Journal: Asian Pac J Allergy Immunol Year: 1988 Type: Article