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Functional and phenotypic analyses of interleukin 2-activated tumor-infiltrating lymphocytes

Functional and phenotypic analyses of interleukin 2-activated tumor-infiltrating lymphocytes

BioTherapy 2(3): 247-259

The tumor-infiltrating lymphocytes (TILs) were cultured with interleukin 2 (IL-2) to induce the activated killer cells possessing autologous tumor-killing activity, and analysed their cell surface phenotypes and assessed anti-tumor killing activity. Furthermore, the activated TILs were transferred into 7 patients adoptively resulting in complete remission in a patient with pancreatic cancer and partial remission in another patient with gastric cancer. The cytotoxic activities of activated TILs at 3 weeks-incubation was 72 +/- 15, 42 +/- 26, 27 +/- 21 and 25 +/- 15% against K562, Daudi, KATO-III and autologous tumor, respectively. The negative selection method, indicated that the killer cells recognizing autologous tumor cells consisted of CD4- or CD8-positive T lymphocytes and CD16- or CD56-positive natural killer cells. The activated TILs could not only lyse cultured tumor cell lines, but also autologous tumor cells.

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Accession: 040179842

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PMID: 1698423

DOI: 10.1007/bf02173526

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