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Lack of B7.1 and B7.2 on head and neck cancer cells and possible significance for gene therapy.

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Cellular immunity mediated by cytotoxic T-cells plays a key role in host tumor defense. An optimal T-cell recognition is based primarily on the presentation of an antigen in the context with MHC Class I molecules, secondarily co-stimulatory molecules, such as the B7 family, are necessary to initiate maximum stimulation. We examined the quality (immunohistochemically) and quantity (FACS-analysis) of B7 expression on primary and permanently established head and neck squamous cell cancer (HNSCC). Neither on the primary nor on the permanently established HNSCC lines could B7 be detected. The lack of co-stimulatory molecules could be the reason for the low immunogenicity of HNSCC. Future gene transfer of B7 could help to restore the immune function. Transfection of expression plasmids encoding B7 cDNA into the tumor cells by gene therapy might restore tumor-specific immunity as a new tool for cancer eradication in the future.
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Document Type: Research Article

Affiliations: Grosshadern Medical Center, Department of Otorhinolaryngology, Head and Neck Surgery, D-81377 Munich, Germany.

Publication date: August 1, 1998

More about this publication?
  • The International Journal of Molecular Medicine is a monthly, peer-reviewed journal devoted to the publication of high quality studies related to the molecular mechanisms of human disease. The journal welcomes research on all aspects of molecular and clinical research, ranging from biochemistry to immunology, pathology, genetics, human genomics, microbiology, molecular pathogenesis, molecular cardiology, molecular surgery and molecular psychology.

    The International Journal of Molecular Medicine aims to provide an insight for researchers within the community in regard to developing molecular tools and identifying molecular targets for the diagnosis and treatment of a diverse number of human diseases.
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