Non-small-cell lung cancers (NSCLC) are often infiltrated by T lymphocytes. It is postulated that the presence of tumor-infiltrating lymphocytes (TIL) reflects a local host immune response against autologous tumors. To identify the nature of NSCLC TIL, we have characterized the molecular structure o
Expression of heavy-chain constant region of immunoglobulin and T-cell receptor gene transcripts in human non-hematopoietic tumor cell lines
โ Scribed by Yasuhiko Kimoto
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 128 KB
- Volume
- 22
- Category
- Article
- ISSN
- 1045-2257
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โฆ Synopsis
Expression of gene transcripts for immunoglobulins and a T-cell receptor was investigated in non-hematopoietic tumor cell lines using the highly sensitive RT-nested PCR method. These proteins are reported to be produced and secreted or expressed in malignancies originating from hematopoietic organs only. Originally designed PCR primers for different exons coding for the heavy-chain constant regions of IgM, IgD, IgG3, IgG1, IgE, and IgA and the T-cell receptor-โฃ were used. All gene transcripts were detected in the 5 investigated cancer cell lines without exception. The results suggest that even non-hematopoietic cancer cells transcribe immunoglobulin and T-cell receptor genes and may produce the corresponding proteins.
๐ SIMILAR VOLUMES
To generate non-small cell lung cancer (NSCLC)-reactive lymphocytes, we transfected an HLA-A2-expressing human NSCLC line (1355) with the cDNA encoding the lymphocyte co-stimulatory molecule CD80. Following selection in G418, 1355.7 demonstrated stable cell-surface expression of CD80. Allogeneic mix