Biomedical subjects
W Bodmer
Publications and source records attributed to W Bodmer.
A new look at tumour immunology.
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Cancer prevention in central and eastern Europe.
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T-cell immune responses to cancer--a new look.
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The isolation and description of LIF-10: a human tumor cell line derived from a colorectal adenocarcinoma.
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Somatic cell genetics and cancer.
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HIV testing on all pregnant women.
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Identification of HLA-DP polymorphism with DP alpha and DP beta probes and monoclonal antibodies: correlation with primed lymphocyte typing.
Thirty-four lymphoblastoid cell lines that had been previously typed for HLA-DP antigens by primed lymphocyte typing (PLT) were tested by Southern blotting and by ELISA. Using two DP beta probes and a DP alpha probe with a series of enzymes, it is possible to identify restriction fragment length polymorphism (RFLP) patterns characteristic of DPw1, -2, -3, -4, and possibly -5. ELISA typing results, based on two polymorphic DP antibodies DP11.1 and ILR1, were compared with PLT-defined and RFLP-defined types. Thus, using a range of probes and enzymes it is possible to identify DP polymorphism. The value of monoclonal antibodies for such studies is demonstrated, and the molecular data can, in some cases, pinpoint the amino acids responsible for the specificity of the monoclonal antibodies.
HLA haplotype associations with disease.
Interest recently has extended to the problem of looking for HLA haplotype associations with particular diseases. Higher order interactions, that is to say of particular haplotypes with a disease, are much more complicated than individual antigen associations, with which most disease studies have so far been concerned. Our aim in this work is to explain the concept of higher order interactions and to discuss the difficulties involved when trying to measure such haplotype associations. The main emphasis is to point out that it is not easily possible to detect haplotype associations if an individual antigen association with the disease exists.
Serologic characterization of human Ia antigens using B-cell lymphoid lines.
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Serological identification of Ia antigens: report of a British region Ia workshop.
In preparation for the 7th International Histocompatibility Workshop 13 laboratories in the British Region participated in a local workshop. One hundred and twenty-three sera which had been previously shown to have activity on either normal B cells, CLL cells or B cell lymphoid lines in the absence of HLA-A, B or C activity were exchanged between the laboratories. These sera were tested on a total of 212 B cells, 101 CLL cells, 76 T cells and 76 lymphoid cell lines. The data was collected and analyzed in Oxford. The analysis showed that six groups of sera could be distinguished. When these groups were compared with the D locus typing of some of the lymphoid lines which were derived from individuals used as MLC typing cells, they were seen to have significant associations with D locus antigens. The serological groups defined were therefore given numbers corresponding to the D locus numbers they associate with, i.e. UK1 is associated with DW1 and so on for UK2, 3, 4, 5 and 7. Comparison of typing techniques showed that long incubation both with antiserum and then with complement, 1 hour + 2 hours gave the best and most reproducible reactions on normal B cells. Residual anti-HLA-A, B or C activity in some of the sera even after platelet absorption showed the importance of adequate checking on T cells after absorption.
5th Histocompatibility Workshop. Introduction.
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Molecular and genetic organization: the future.
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Functional expression of HLA-DP genes transfected into mouse fibroblasts.
The HLA class II antigens are a highly polymorphic family of dimeric cell-surface glycoproteins, expressed predominantly on the surface of immunocompetent cells. They are intimately involved with the induction of the T-cell response to extrinsic antigen and are important predisposing factors for a wide spectrum of autoimmune diseases. We describe here the expression of a class II product from the HLA-DP (new WHO nomenclature, formerly SB) subregion after transfer of cloned genes into mouse fibroblasts. The transfected DP antigen is recognized by several HLA class II monoclonal antibodies and, though present in a mouse cell background, is able to function in the presentation of influenza antigen to cloned DP-restricted human T lymphocytes.
Biological significance of beta hCG, HLA and other membrane antigen expression on bladder tumours and their relationship to tumour infiltrating lymphocytes (TIL).
Expression of beta human chorionic gonadotropin (beta hCG) by bladder tumours has been shown to be associated with increased metastases and resistance to treatment with radiotherapy and chemotherapy. Preliminary results from typing frozen tumours using monoclonal antibodies against HLA determinants show reduced or lost expression of one or more antigens in two thirds of patients studied with a trend for more malignant behaviour and inability to generate tumour infiltrating lymphocyte expression using Interleukin-2 in those patients whose tumours demonstrate loss. In this series beta hCG expression was only seen in a subgroup of those demonstrating loss of HLA antigen expression. Studies of beta hCG secreting bladder cancer cell lines showed that it was possible to induce class II HLA antigen expression with gamma Interferon, and that this treatment but not alpha Interferon reduced beta hCG production by the cell line.