T cell-receptor V gene use by CD4+ melanoma-reactive clonal and oligoclonal T-cell lines. 1998

M I Nishimura, and M C Custer, and S L Schwarz, and L L Parker, and A Mixon, and T M Clay, and J R Yannelli, and S A Rosenberg
Surgery Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA.

Tumor-reactive CD4+ T cells can be isolated and expanded from the peripheral blood and tumor lesions of patients with melanoma. In contrast to CD8+ T cells, little is known about the antigens recognized by these CD4+ T cells. As a consequence, little is known about the diversity of the T-cell receptor (TcR) use by melanoma-reactive CD4+ T cells. To address these questions, a panel of clonal or highly oligoclonal CD4+ T-cell lines was established from a patient with metastatic melanoma. A CD4+ tumor-infiltrating lymphocyte (TIL) line was established that was highly oligoclonal and recognized only autologous melanoma cells but not allogeneic melanomas, suggesting the expression of a mutated or uniquely expressed antigen by this melanoma. The antigen recognized by the CD4+ TILs could be presented by intact melanoma cells or by autologous Epstein-Barr virus (EBV) B cells pulsed with melanoma cell lysates. A panel of CD4+ clonal and highly oligoclonal T-cell lines was isolated form peripheral blood mononuclear cells (PBMC) from this patient; these were also reactive with autologous melanoma cells or tumor extracts pulsed on autologous EBV B cells. Despite their reactivity with the autologous melanoma, we found no evidence of restricted TcR V gene use, because all six T-cell lines recognized antigen via different TcR alpha/beta rearrangements. Furthermore, there were no conserved amino acids in the CDR3 regions of these TcRs, indicating that multiple TcR clonotypes could mediate recognition of a single unique major histocompatibility (MHC) complex class II restricted melanoma antigen or that multiple MHC class II restricted melanoma antigens are expressed by the melanoma.

UI MeSH Term Description Entries
D008545 Melanoma A malignant neoplasm derived from cells that are capable of forming melanin, which may occur in the skin of any part of the body, in the eye, or, rarely, in the mucous membranes of the genitalia, anus, oral cavity, or other sites. It occurs mostly in adults and may originate de novo or from a pigmented nevus or malignant lentigo. Melanomas frequently metastasize widely, and the regional lymph nodes, liver, lungs, and brain are likely to be involved. The incidence of malignant skin melanomas is rising rapidly in all parts of the world. (Stedman, 25th ed; from Rook et al., Textbook of Dermatology, 4th ed, p2445) Malignant Melanoma,Malignant Melanomas,Melanoma, Malignant,Melanomas,Melanomas, Malignant
D008969 Molecular Sequence Data Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories. Sequence Data, Molecular,Molecular Sequencing Data,Data, Molecular Sequence,Data, Molecular Sequencing,Sequencing Data, Molecular
D003001 Cloning, Molecular The insertion of recombinant DNA molecules from prokaryotic and/or eukaryotic sources into a replicating vehicle, such as a plasmid or virus vector, and the introduction of the resultant hybrid molecules into recipient cells without altering the viability of those cells. Molecular Cloning
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000595 Amino Acid Sequence The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION. Protein Structure, Primary,Amino Acid Sequences,Sequence, Amino Acid,Sequences, Amino Acid,Primary Protein Structure,Primary Protein Structures,Protein Structures, Primary,Structure, Primary Protein,Structures, Primary Protein
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D000951 Antigens, Neoplasm Proteins, glycoprotein, or lipoprotein moieties on surfaces of tumor cells that are usually identified by monoclonal antibodies. Many of these are of either embryonic or viral origin. Neoplasm Antigens,Tumor Antigen,Tumor Antigens,Antigen, Tumor,Antigens, Tumor
D001483 Base Sequence The sequence of PURINES and PYRIMIDINES in nucleic acids and polynucleotides. It is also called nucleotide sequence. DNA Sequence,Nucleotide Sequence,RNA Sequence,DNA Sequences,Base Sequences,Nucleotide Sequences,RNA Sequences,Sequence, Base,Sequence, DNA,Sequence, Nucleotide,Sequence, RNA,Sequences, Base,Sequences, DNA,Sequences, Nucleotide,Sequences, RNA
D012313 RNA A polynucleotide consisting essentially of chains with a repeating backbone of phosphate and ribose units to which nitrogenous bases are attached. RNA is unique among biological macromolecules in that it can encode genetic information, serve as an abundant structural component of cells, and also possesses catalytic activity. (Rieger et al., Glossary of Genetics: Classical and Molecular, 5th ed) RNA, Non-Polyadenylated,Ribonucleic Acid,Gene Products, RNA,Non-Polyadenylated RNA,Acid, Ribonucleic,Non Polyadenylated RNA,RNA Gene Products,RNA, Non Polyadenylated
D014162 Transfection The uptake of naked or purified DNA by CELLS, usually meaning the process as it occurs in eukaryotic cells. It is analogous to bacterial transformation (TRANSFORMATION, BACTERIAL) and both are routinely employed in GENE TRANSFER TECHNIQUES. Transfections

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