Non-muscle myosin as target antigen for human autoantibodies in patients with hepatitis C virus-associated chronic liver diseases

Autor: H. Imai, Eng M. Tan, C. A. Von Muhlen, Edward K. L. Chan, Kendo Kiyosawa, Carol L. Peebles
Rok vydání: 1995
Předmět:
Zdroj: Clinical and Experimental Immunology. 100:67-74
ISSN: 1365-2249
0009-9104
DOI: 10.1111/j.1365-2249.1995.tb03605.x
Popis: SUMMARYThree patients with hepatitis C virus (HCV)-related chronic liver disease were shown to have autoantibodies strongly reacting with cytoskeletal fibres of non-muscle cells. The heavy chain of non-muscle myosin microfilament was the main target for those autoantibodies, as determined by (i) cell and tissue immunofluorescence studies showing colocalization with an anti-myosin antibody prototype; (ii) primary reactivity in immunoblotting with a 200-kD protein, using either MOLT-4 cells, human platelets, or affinity-purified non-muscle myosin as antigen extract; and (iii) immunoblotting of similar immunoreactive fragments in papain-digested MOLT-4 cell extracts, by using those human sera and antibody prototype. Autoantibodies to non-muscle myosin heavy chain were not previously reported in patients with chronic liver diseases, especially in those associated with HCV infection.
Databáze: OpenAIRE