Abstract:
:Indirect immunofluorescence staining with monoclonal antibodies has shown a differential distribution of HLA-DR, DQ, and DP antigens in normal tissues of nonlymphoid origin. The distribution of HLA-DP antigens is similar to that of HLA-DR antigens, while that of HLA-DQ antigens is more restricted. Malignant transformation of cells of nonlymphoid origin may be associated with the appearance of the gene products of the HLA-D region. HLA-DR antigens appear more frequently than the other two types of HLA class II antigens and HLA-DP antigens more frequently than HLA-DQ antigens. Differential expression of the gene products of the HLA-D region was also found in autologous metastases removed from different anatomic sites from patients with melanoma. The HLA class II phenotype of surgically removed malignant lesions did not correlate with the degree of differentiation of tumor cells and/or with the expression and/or cellular distribution of HLA class I antigens. Furthermore, in melanoma lesions, no relationship was found between the HLA class II phenotype and the expression of 3 membrane bound and 1 cytoplasmic melanoma associated antigen recognized by monoclonal antibodies. The functional significance and the practical implications of the differential expression of the gene products of the HLA-D region by tumor cells are discussed.
journal_name
Hum Immunoljournal_title
Human immunologyauthors
Natali P,Bigotti A,Cavalieri R,Nicotra MR,Tecce R,Manfredi D,Chen YX,Nadler LM,Ferrone Sdoi
10.1016/0198-8859(86)90028-5subject
Has Abstractpub_date
1986-02-01 00:00:00pages
220-33issue
2eissn
0198-8859issn
1879-1166pii
0198-8859(86)90028-5journal_volume
15pub_type
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