Biography:

In the past William E. Biddison has collaborated on articles with Steven S. Beall and Paul D. Drew. One of their most recent publications is The germline repertoire of T cell receptor β-chain genes in patients with chronic progressive multiple sclerosis. Which was published in journal Journal of Neuroimmunology.

More information about William E. Biddison research including statistics on their citations can be found on their Copernicus Academic profile page.

William E. Biddison's Articles: (4)

The germline repertoire of T cell receptor β-chain genes in patients with chronic progressive multiple sclerosis

AbstractThe T cell receptor (TcR) β-chain germline gene repertoire of multiple sclerosis (MS) patients was compared to that of 100 normal individuals. No differences in the number of gene segments defined by probes representing 14 different human Vβ subfamilies and the constant region genes were found. The distribution of haplotypes defined by restriction fragment length polymorphism (RFLP) alleles detected with Vβ8, Vβ11, and Cβ probes in the MS patients was significantly different from that found in normal individuals. Because 84% of the MS patients were DR2+, the findings in these patients were compared to a second group of 43 normals who were DR2+. The distribution of TcR haplotypes in MS patients was also significantly different from that in the DR2+ normals. The data suggest that an MS susceptibility gene(s) may be located in the region of the TcR β-chain gene complex.

Distinct epitopes on the T8 molecule are differentially involved in cytotoxic T cell function

AbstractThe present report attempts to determine if there are distinct epitopes on the T8 molecule that are involved in class I-restricted cytotoxic T lymphocyte (CTL) function. A panel of 9 monoclonal antibodies (OKT8A,B,C,D,E,F,G,H,I, and OKT5) was produced and all antibodies were shown to bind to the T8 molecule. This panel of antibodies was employed to characterize the distribution of distinct epitopes on the T8 molecule and to block the activity of class I-specific influenza virus-immune and allo-immune CTL effector function. Significant differences in the ability of the anti-T8 antibodies to block CTL function were observed: OKT8C and T8F blocked best (49 and 55% respectively); OKT8A,E,G,H,I, and OKT5 blocked less well (24–31%); and OKT8B blocked marginally (11%). There was no correlation between the capacity of the antibodies to block CTL function and their heavy chain isotype. Competitive binding of the different OKT8 antibodies to the cell surface and differential trypsin sensitivity of the epitopes recognized by the antibodies indicated that OKT8C and T8F were located on topographically distinct regions of the T8 molecule. These results indicate that specific epitopes on the T8 molecule are involved in CTL function, and that there could be more than one functional site on the molecule.

Short communicationCloning and expression analysis of a human cDNA homologous to Xenopus TFIIIA

AbstractWe report here the nucleotide sequence of a clone, C2H2-34.10, isolated from a human brain cDNA library using degenerate oligodeoxyribonucleotide hybridization. C2H2-34.10 has extensive homology to the Xenopus laevis 5S DNA/ RNA-binding protein, TFIIIA. The deduced amino acid (aa) sequence of the human clone gives a protein of 363 aa with identity to TFIIIA from both X. laevis (57%) and Rana pipiens (59%). This human clone contains nine C2H2-type zinc fingers like frog TFIIIA. Northern blot analysis indicates that the C2H2-34.10 RNA is expressed in human ovary, as well as human neuronal cell lines.

ArticleTwo Human T Cell Receptors Bind in a Similar Diagonal Mode to the HLA-A2/Tax Peptide Complex Using Different TCR Amino Acids

AbstractThe three-dimensional structure of a human αβ T cell receptor (TCR), B7, bound to the HLA-A2 molecule/HTLV-1 Tax peptide complex was determined by x-ray crystallography. Although different from the A6 TCR, previously studied, in 16 of the 17 residues that contact HLA-A2/Tax, the B7 TCR binds in a similar diagonal manner, only slightly tipped and rotated, relative to the A6 TCR. The structure explains data from functional assays on the specificity differences between the B7 and A6 TCRs for agonist, partial agonist, and null peptides. The existence of a structurally similar diagonal binding mode for TCRs favors mechanisms based on the formation of geometrically defined supramolecular assemblies for initiating signaling.

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