CHARACTERIZATION OF CYTOKINE GENE-EXPRESSION IN CD4+ AND CD8+ T-CELLS AFTER ACTIVATION WITH PHORBOL-MYRISTATE ACETATE AND PHYTOHEMAGGLUTININ
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AbstractCytokines are important mediators involved in the development of effector cells and in the regulation of immune responses. The gene expression of these mediators in T cell subset has yet to be fully elucidated. Using sensitive reverse transcription-polymerase chain reaction (RT-PCR), the kinetics of cytokine gene expression in human CD4+ and CD8+ T cells were examined. CD4+ T cells were more readily activated by phorbol myristate acetate (PMA) and phytohaemagglutinin (PHA) than CD8+ T cells in terms of the IL-2 receptor (IL-2R) mRNA expression. Quantitative differences in cytokine gene expression between CD4+ and CD8+ T cells were confirmed and higher levels of cytokine mRNAs were induced in CD4+ than in CD8+ T cells. Early induction of IL-2 mRNA was observed in both T cell subsets. The demonstration of different kinetics of cytokine gene expression illustrates one of the examples of the complexity of immunoregulation. The differential response of cytokine gene expression in different T cell subsets should be taken into consideration when clinical studies in cytokine production by peripheral blood mononuclear cells are interpreted.
All Author(s) ListLEUNG JCK, LAI CKW, CHUI YL, HO RTH, CHAN CHS, LAI KN
Journal nameClinical and Experimental Immunology
Year1992
Month10
Day1
Volume Number90
Issue Number1
PublisherBLACKWELL SCIENCE LTD
Pages147 - 153
ISSN0009-9104
eISSN1365-2249
LanguagesEnglish-United Kingdom
KeywordsCD4+ T-CELLS; CD8+ T-CELLS; CYTOKINE GENE; MESSENGER RNA; POLYMERASE CHAIN REACTION; REVERSE TRANSCRIPTION; TIME-COURSE
Web of Science Subject CategoriesImmunology; IMMUNOLOGY

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