Immunoregulatory lymphokines IL-2 and IL-4 produced by IL-2- and IL-4-cDNA-transformed somatic cells were used for LAK cell generation. The cytolytic effect of LAK cells activated for 3 days with IL-2 and measured by Cr-51 release of three types of target cells, YAC-1 (NK-sensitive), C1498 (NK-resistant) and X63-Ag8.653 (plasmocytoma cell line utilized for insertion of the IL-2 and Il-4 genes), was significantly depressed by adding IL-4 during the activation period.
机构:Univ Fed Rio de Janeiro, Ctr Ciencias Saude, Inst Biofis Carlos Chagas Filho, Rio De Janeiro, Brazil
Sholl-Franco, A
Figueiredo, KGA
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机构:Univ Fed Rio de Janeiro, Ctr Ciencias Saude, Inst Biofis Carlos Chagas Filho, Rio De Janeiro, Brazil
Figueiredo, KGA
de Araujo, EG
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Univ Fed Rio de Janeiro, Ctr Ciencias Saude, Inst Biofis Carlos Chagas Filho, Rio De Janeiro, BrazilUniv Fed Rio de Janeiro, Ctr Ciencias Saude, Inst Biofis Carlos Chagas Filho, Rio De Janeiro, Brazil