Regulation of HLA-DR antigen in monocytes from colorectal cancer patients by in vitro treatment with human recombinant interferon-γ
During the immune response, a great number of cytokines that modulate the function of mononuclear phagocytes are produced. Since interferons are one of the most important cytokines, the aim of this study was to evaluate the expression of HLA-DR antigen after an 18-h culture with human recombinant in...
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2000
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10189068_v10_n2_p90_Novellino http://hdl.handle.net/20.500.12110/paper_10189068_v10_n2_p90_Novellino |
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paper:paper_10189068_v10_n2_p90_Novellino2023-06-08T15:59:53Z Regulation of HLA-DR antigen in monocytes from colorectal cancer patients by in vitro treatment with human recombinant interferon-γ Colorectal cancer HLA-DR Interferon-γ Monocytes cytokine HLA DR antigen major histocompatibility antigen class 2 recombinant gamma interferon article cellular immunity clinical article colorectal cancer controlled study cytokine production human human cell immune response immunofluorescence leukocyte culture monocyte mononuclear phagocyte tumor immunity Adenocarcinoma Antigens, Neoplasm Colorectal Neoplasms Fluorescent Antibody Technique, Indirect Gene Expression Regulation, Neoplastic HLA-DR Antigens Humans Interferon-gamma, Recombinant Leukocytes, Mononuclear During the immune response, a great number of cytokines that modulate the function of mononuclear phagocytes are produced. Since interferons are one of the most important cytokines, the aim of this study was to evaluate the expression of HLA-DR antigen after an 18-h culture with human recombinant interferon-γ (hrIFN-γ) on freshly isolated peripheral blood monocytes from 16 colorectal cancer patients and 16 healthy donors, using an indirect immunofluorescence method. The results obtained showed that there was a decreased percentage of HLA-DR+ monocytes in the colorectal cancer patents (51 ± 3%, p < 0.01) compared with the healthy donors (77 ± 2%). Treatment for 18 h with hrIFN-γ increased the percentages of monocytes expressing HLA-DR: 71 ± 3% for the cancer patients and 84 ± 2% for the healthy donors (p < 0.01 and < 0.001, respectively). Our results demonstrate that after in vitro treatment with hrIFN-γ, functionally altered monocytes from colorectal cancer patients can reach major histocompatibility complex II antigen expression values similar to those of healthy donors, thus improving the host's cellular immune response against the tumor. 2000 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10189068_v10_n2_p90_Novellino http://hdl.handle.net/20.500.12110/paper_10189068_v10_n2_p90_Novellino |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Colorectal cancer HLA-DR Interferon-γ Monocytes cytokine HLA DR antigen major histocompatibility antigen class 2 recombinant gamma interferon article cellular immunity clinical article colorectal cancer controlled study cytokine production human human cell immune response immunofluorescence leukocyte culture monocyte mononuclear phagocyte tumor immunity Adenocarcinoma Antigens, Neoplasm Colorectal Neoplasms Fluorescent Antibody Technique, Indirect Gene Expression Regulation, Neoplastic HLA-DR Antigens Humans Interferon-gamma, Recombinant Leukocytes, Mononuclear |
| spellingShingle |
Colorectal cancer HLA-DR Interferon-γ Monocytes cytokine HLA DR antigen major histocompatibility antigen class 2 recombinant gamma interferon article cellular immunity clinical article colorectal cancer controlled study cytokine production human human cell immune response immunofluorescence leukocyte culture monocyte mononuclear phagocyte tumor immunity Adenocarcinoma Antigens, Neoplasm Colorectal Neoplasms Fluorescent Antibody Technique, Indirect Gene Expression Regulation, Neoplastic HLA-DR Antigens Humans Interferon-gamma, Recombinant Leukocytes, Mononuclear Regulation of HLA-DR antigen in monocytes from colorectal cancer patients by in vitro treatment with human recombinant interferon-γ |
| topic_facet |
Colorectal cancer HLA-DR Interferon-γ Monocytes cytokine HLA DR antigen major histocompatibility antigen class 2 recombinant gamma interferon article cellular immunity clinical article colorectal cancer controlled study cytokine production human human cell immune response immunofluorescence leukocyte culture monocyte mononuclear phagocyte tumor immunity Adenocarcinoma Antigens, Neoplasm Colorectal Neoplasms Fluorescent Antibody Technique, Indirect Gene Expression Regulation, Neoplastic HLA-DR Antigens Humans Interferon-gamma, Recombinant Leukocytes, Mononuclear |
| description |
During the immune response, a great number of cytokines that modulate the function of mononuclear phagocytes are produced. Since interferons are one of the most important cytokines, the aim of this study was to evaluate the expression of HLA-DR antigen after an 18-h culture with human recombinant interferon-γ (hrIFN-γ) on freshly isolated peripheral blood monocytes from 16 colorectal cancer patients and 16 healthy donors, using an indirect immunofluorescence method. The results obtained showed that there was a decreased percentage of HLA-DR+ monocytes in the colorectal cancer patents (51 ± 3%, p < 0.01) compared with the healthy donors (77 ± 2%). Treatment for 18 h with hrIFN-γ increased the percentages of monocytes expressing HLA-DR: 71 ± 3% for the cancer patients and 84 ± 2% for the healthy donors (p < 0.01 and < 0.001, respectively). Our results demonstrate that after in vitro treatment with hrIFN-γ, functionally altered monocytes from colorectal cancer patients can reach major histocompatibility complex II antigen expression values similar to those of healthy donors, thus improving the host's cellular immune response against the tumor. |
| title |
Regulation of HLA-DR antigen in monocytes from colorectal cancer patients by in vitro treatment with human recombinant interferon-γ |
| title_short |
Regulation of HLA-DR antigen in monocytes from colorectal cancer patients by in vitro treatment with human recombinant interferon-γ |
| title_full |
Regulation of HLA-DR antigen in monocytes from colorectal cancer patients by in vitro treatment with human recombinant interferon-γ |
| title_fullStr |
Regulation of HLA-DR antigen in monocytes from colorectal cancer patients by in vitro treatment with human recombinant interferon-γ |
| title_full_unstemmed |
Regulation of HLA-DR antigen in monocytes from colorectal cancer patients by in vitro treatment with human recombinant interferon-γ |
| title_sort |
regulation of hla-dr antigen in monocytes from colorectal cancer patients by in vitro treatment with human recombinant interferon-γ |
| publishDate |
2000 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10189068_v10_n2_p90_Novellino http://hdl.handle.net/20.500.12110/paper_10189068_v10_n2_p90_Novellino |
| _version_ |
1768542898812354560 |