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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Double determinant immunoassay to measure a human high-molecular-weight melanoma-associated antigen.

Using monoclonal antibodies to distinct determinants of a human high-molecular weight melanoma-associated antigen (HMW-MAA), a double determinant immunoassay has been developed. The assay is specific and reproducible. Its sensitivity is influenced by the incubation time of antibodies with antigen sources and the combination of antibodies, as well as by the pH of the buffer and the incubation time used to coat plates with antibodies. Testing with the double determinant immunoassay of Nonidet P-40 extracts of human cell lines and of surgically removed normal and malignant tissues has confirmed the restricted tissue distribution of the HMW-MAA. In addition, significant differences have been found in the level of HMW-MAA in melanoma cell lines, as well as in melanoma lesions removed from different patients and from different sites of a given patient. The amount of HMW-MAA shed by various melanoma cell lines does not correlate with their cell surface expression and with their level in Nonidet P-40 extracts. Interferon and hyperthermia increase the shedding of the HMW-MAA by melanoma cells.[1]

References

  1. Double determinant immunoassay to measure a human high-molecular-weight melanoma-associated antigen. Giacomini, P., Ng, A.K., Kantor, R.R., Natali, P.G., Ferrone, S. Cancer Res. (1983) [Pubmed]
 
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