PKCα and PKCβ cooperate functionally in CD3-induced de novo IL-2 mRNA transcription
Copyright policy )PKCα and PKCβ cooperate functionally in CD3-induced de novo IL-2 mRNA transcription
The physiological functions of PKCα and PKCθ isotypes downstream of the antigen receptor have been defined in CD3(+) T cells. In contrast, no function of the second conventional PKC member, PKCβ, has been described yet in T cell antigen receptor signalling. To investigate the hypothesis that both conventional PKCα and PKCβ isotypes may have overlapping functions in T cell activation signalling, we generated mice that lacked the genes for both isotypes. We found that PKCα(-/-)/β(-/-) animals are viable, live normal life spans and display normal T cell development. However, these animals possess additive defects in T cell responses in comparison to animals that carry single mutations in these genes. Our studies demonstrate that the activities of PKCα and PKCβ converge to regulate IL-2 cytokine responses in anti-CD3 stimulated primary mouse T cells. Here, we present genetic evidence that PKCα and PKCβ cooperate in IL-2 transcriptional transactivation in primary mouse T cells independently of the actions of PKCθ.
- FWF Austrian Science Fund Austria
- Tyrolean Cancer Research Institute Austria
- MEDIZINISCHE UNIVERSITAT GRAZ Austria
- Innsbruck Medical University Austria
Transcriptional Activation, Protein Kinase C-alpha, CD3 Complex, Transcription, Genetic, Immunology, Receptors, Antigen, T-Cell, Lymphocyte Activation, Article, Immunophenotyping, Mice, IL-2 transcription, T-Lymphocyte Subsets, Protein Kinase C beta, Immunology and Allergy, Animals, RNA, Messenger, Protein Kinase C, Mice, Knockout, NFATC Transcription Factors, PKCβ, T cell activation, PKCα, NF-kappa B, Transcription Factor AP-1, Phenotype, Interleukin-2, Immunologic Memory, cytokine response
Transcriptional Activation, Protein Kinase C-alpha, CD3 Complex, Transcription, Genetic, Immunology, Receptors, Antigen, T-Cell, Lymphocyte Activation, Article, Immunophenotyping, Mice, IL-2 transcription, T-Lymphocyte Subsets, Protein Kinase C beta, Immunology and Allergy, Animals, RNA, Messenger, Protein Kinase C, Mice, Knockout, NFATC Transcription Factors, PKCβ, T cell activation, PKCα, NF-kappa B, Transcription Factor AP-1, Phenotype, Interleukin-2, Immunologic Memory, cytokine response
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