PubMed · 11638282
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R Barth, H L Bock, G Korger. 1989. [Not Available].. https://pubmed.ncbi.nlm.nih.gov/11638282/
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Monoclonal antibodies are reproducible, specific, and cost-effective molecular probes; use outside the laboratory is, however, restricted by technical limitations. Addressing these constraints, the first self-signalling antibodies are now described, where specific antigen binding causes release of bound reporter from bispecific antibodies (BsAb) to generate a detectable signal. The report examines the concept that two different antibody binding sites in close proximity can promote interaction between molecules recognised by these sites, generating a signal by molecular crowding. Signal strength is found to increase with increasing homogeneity for a BsAb reactive with multimeric surfactant antigen; signal response is linear for a BsAb reactive with univalent small analyte deoxypyridinoline. Self-signalling is consistent with intramolecular steric hindrance. This is the first report detailing integration of two different functions, molecular detection and signal response, into BsAbs and with detection of large and small analytes, has generic application to antibody-based systems.
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Human T-cell lymphotropic virus type I (HTLV-I) infection is associated with a variety of human diseases including HTLV-I associated myelopathy/tropical spastic paraparesis (HAM/TSP), a chronic progressive inflammatory neurological disease. An important risk factor for the development of HAM/TSP is thought to be a high HTLV-I proviral load. Histopathological studies have demonstrated the presence of HTLV-I virus in the affected areas of spinal cords from HAM/TSP patients. Furthermore, T-cell infiltrations have been shown in spinal cord lesions. The precise mechanism for disease development is still unknown. Virus-host immune interactions are considered to play an important role in disease pathogenesis. This review focuses on current molecular, histopathological, and immunological approaches to understand the immunopathogenesis of HAM/TSP.