Phenotypical and functional characteristics of tumor-infiltrating lymphocytes from colon carcinomas stimulated with rIL-2 and rIL-4 in vitro: comparison with lymphocytes of the normal colon mucosa and the peripheral blood - PubMed (original) (raw)
Comparative Study
. 1994 May-Jun;14(3A):963-8.
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- PMID: 8074499
Comparative Study
Phenotypical and functional characteristics of tumor-infiltrating lymphocytes from colon carcinomas stimulated with rIL-2 and rIL-4 in vitro: comparison with lymphocytes of the normal colon mucosa and the peripheral blood
S Wimmenauer et al. Anticancer Res. 1994 May-Jun.
Erratum in
- Errata.
[No authors listed] [No authors listed] Anticancer Res. 2019 Sep;39(9):5225. Anticancer Res. 2019. PMID: 31519637 No abstract available.
Abstract
The phenotypical composition of tumor-infiltrating lymphocytes (TIL) from colorectal carcinomas was compared with that of intraepithelial lymphocytes of the autologous normal colon mucosa (IEL) and autologous peripheral blood lymphocytes (PBL). The CD4+/CD8+ ratios of the freshly isolated TIL, IEL and PBL were comparable and always > 1. CD25+, HLA-DR+ and CD56+ cells accumulated significantly in the TIL, while CD45RA+ cells were less frequent compared to the autologous IEL and PBL. CD29+ memory-cells were found with the highest frequency in the TIL. Stimulation with rIL-2 in vitro induced an outgrowth of CD56+ cells in the TIL. Concordantly the expression of CD3+ and the alpha/beta T-cell receptor was low. In a standard 51Cr-release assay these phenotypically LAK-cells representing effectors displayed an unspecific lytic activity against the autologous tumor as well as against allogeneic K562 and Daudi targets. The number of CD56+ cells could be reduced in TIL and PBL by simultaneous stimulation with rIL-2 and rIL-4, while the number of CD3+ cells increased.
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