Abstract |
Primary cutaneous lymphomas (CLs) constitute a spectrum of diseases characterized by a clonal accumulation of lymphocytes in the skin. Most CLs display a T(h)2 cytokine profile, including expression of interleukin-10 (IL-10). Because the up-regulation of HLA-G, a nonclassical class Ib molecule inducible by IL-10, might account for the immunescape of the malignant clone, HLA-G and IL-10 expression has been investigated in 45 cases of primary CL (10 of B-cell and 35 of T-cell origin) with quantitative polymerase chain reaction (PCR) and immunohistochemistry. HLA-G message was present in all cutaneous B-cell (CBCL) and T-cell (CTCL) lymphomas evaluated. Immunohistochemistry revealed HLA-G protein expression in 23 (51%) of 45 cases (7 of 10 CBCL, 16 of 35 CTCL). While in CBCL mostly indolent types displayed HLA-G positivity, in CTCL HLA-G expression was associated with high-grade histology and advanced stage of the disease. Except for neoplastic and infiltrating lymphocytes, other cells such as macrophages and dendritic cells showed HLA-G immunoreactivity. Furthermore, IL-10 protein expression was demonstrated in 16 (73%) of 22 HLA-G(+) cases, which correlated with HLA-G protein presence (P <.001). HLA-G up-regulation together with IL-10 expression in CL might additionally contribute to the evasion of immunosurveillance and facilitate the transition from low- to high-grade lymphomas.
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Authors | Mirjana Urosevic, Joerg Willers, Beatrix Mueller, Werner Kempf, Guenter Burg, Reinhard Dummer |
Journal | Blood
(Blood)
Vol. 99
Issue 2
Pg. 609-17
(Jan 15 2002)
ISSN: 0006-4971 [Print] United States |
PMID | 11781245
(Publication Type: Journal Article)
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Chemical References |
- HLA Antigens
- HLA-G Antigens
- Histocompatibility Antigens Class I
- Neoplasm Proteins
- RNA, Messenger
- RNA, Neoplasm
- Interleukin-10
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Topics |
- Adolescent
- Adult
- Aged
- Aged, 80 and over
- Computer Systems
- Female
- Gene Expression Regulation, Neoplastic
- HLA Antigens
(biosynthesis, genetics)
- HLA-G Antigens
- Histocompatibility Antigens Class I
(biosynthesis, genetics)
- Humans
- Immunoenzyme Techniques
- Immunologic Surveillance
- Interleukin-10
(biosynthesis, genetics)
- Lymphoma, B-Cell
(genetics, immunology, metabolism)
- Lymphoma, Large-Cell, Anaplastic
(genetics, immunology, metabolism)
- Lymphoma, Non-Hodgkin
(genetics, immunology, metabolism)
- Lymphoma, T-Cell, Cutaneous
(genetics, immunology, metabolism)
- Male
- Middle Aged
- Neoplasm Proteins
(biosynthesis, genetics)
- Polymerase Chain Reaction
- RNA, Messenger
(biosynthesis)
- RNA, Neoplasm
(biosynthesis)
- Skin
(metabolism)
- Skin Neoplasms
(genetics, immunology, metabolism)
- Transcription, Genetic
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