6533b7ddfe1ef96bd1274815
RESEARCH PRODUCT
Altered expression of nonclassical HLA class Ib antigens in human renal cell carcinoma and its association with impaired immune response
Barbara MalenicaChristoph HuberJürgen BukurBarbara Seligersubject
Blotting WesternImmunologyHuman leukocyte antigenBiologyurologic and male genital diseasesInterferon-gammaImmune systemAntigenDownregulation and upregulationHLA AntigensInterferonTumor Cells CulturedmedicineHumansImmunology and AllergyRNA MessengerCarcinoma Renal CellHLA-G AntigensKidneyReverse Transcriptase Polymerase Chain ReactionHistocompatibility Antigens Class IAntibodies MonoclonalGeneral MedicineFlow CytometryKidney NeoplasmsRecombinant ProteinsUp-RegulationGene Expression Regulation NeoplasticKiller Cells NaturalImmunosurveillanceBlotting Southernmedicine.anatomical_structureImmunologyCD8T-Lymphocytes Cytotoxicmedicine.drugdescription
Abstract An optimal antitumoral immune response requires the activation of both CD8 + and CD4 + T lymphocytes by the peptide antigen presentation via the human leukocyte antigen (HLA) class I and class II molecules, respectively. Downregulation or loss of HLA molecules has been found in human renal cell carcinoma (RCC) and provides a strategy of these tumors to evade T-cell mediated immunosurveillance. In addition, a tumor-specific upregulation of HLA-G has been recently described in RCC, which also leads to an impaired immune response. We here summarize the frequency of the constitutive and/or interferon-γ (IFN-γ) inducible expression of nonclassical HLA class Ib antigens in RCC cell lines, surgically removed RCC lesions and normal kidney epithelium, the molecular characteristics of HLA-G expression, and its role in immune recognition.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2003-11-01 | Human Immunology |