T lymphocyte (T cell) activation plays a critical role in immune responses. Deregulation of T cell activation will result in cancer, autoimmune, or immunodeficiency diseases. T cell activation is induced by major-histocompatibility-complex (MHC) molecules on antigen-presenting cells (APC) presenting antigen peptides to T cell receptors (TCR) on the surface of T cells. This stimulation on TCR/CD3 complexes induces a series of signal transduction cascades leading to activation of various kinases such IKK, JNK, and p38. These activated kinases further regulate the activation of multiple transcription factors including NF-?B, NF-AT, and AP-1. These transcription factors ultimately control the gene expression profile in T cells, leading to production of cytokines, and T cell proliferation and differentiation. Recent studies from our lab and others demonstrate that CARMA1, a scaffold molecule, plays a critical role in NF-?B and JNK activation following the stimulation of TCR. Although it is clear that CARMA1 mediates TCR-induced NF-?B activation through regulating I?B kinase (IKK) complex, the molecular mechanism by which CARMA1 is involved in IKK activation is not fully defined. In addition, the role of CARMA1-mediated JNK activation in T cell activation and differentiation remains to be determined. To investigate how CARMA1 is involved in TCR-induced signal transduction and its role in T cell proliferation and differentiation, four specific aims are proposed in this application.
The specific aims are: (1) to determine how CARMA1 is recruited into immunological synapse; (2) to determine the signaling pathways mediating TCR-induced IKK activation; (3) to define the role of CARMA1-mediated JNK2 activation in T cell activation and differentiation. These studies will not only reveal the basic mechanism of the TCR-induced signaling pathway, but also provide the molecular insight for determining the unknown causes of autoimmunity, immunodeficiency, and T cell malignancy. Therefore, the results from these studies will provide the molecular basis for designing novel therapeutic agents to treat these diseases. Public Health Relevance Statement: T cell activation and differentiation plays a critical role in immune responses. In this application, we propose to investigate the role of CARMA1 and its associated signaling events in T cell receptor-induced NF-?B and JNK activation that plays pivotal roles for T cell activation and differentiation. The results from these studies will provide the molecular basis for designing novel therapeutic agents to treat autoimmunity, immunodeficiency, leukemia, and lymphoma. ? ? ?

Agency
National Institute of Health (NIH)
Institute
National Institute of General Medical Sciences (NIGMS)
Type
Research Project (R01)
Project #
2R01GM065899-07A1
Application #
7471091
Study Section
Cellular and Molecular Immunology - A Study Section (CMIA)
Program Officer
Marino, Pamela
Project Start
2002-08-01
Project End
2012-05-31
Budget Start
2008-08-01
Budget End
2009-05-31
Support Year
7
Fiscal Year
2008
Total Cost
$308,000
Indirect Cost
Name
University of Texas MD Anderson Cancer Center
Department
Microbiology/Immun/Virology
Type
Other Domestic Higher Education
DUNS #
800772139
City
Houston
State
TX
Country
United States
Zip Code
77030
Pan, Deng; Zhu, Yifan; Zhou, Zhicheng et al. (2016) The CBM Complex Underwrites NF-?B Activation to Promote HER2-Associated Tumor Malignancy. Mol Cancer Res 14:93-102
Pan, D; Jiang, C; Ma, Z et al. (2016) MALT1 is required for EGFR-induced NF-?B activation and contributes to EGFR-driven lung cancer progression. Oncogene 35:919-28
Blonska, Marzenna; Zhu, Yifan; Chuang, Hubert H et al. (2015) Jun-regulated genes promote interaction of diffuse large B-cell lymphoma with the microenvironment. Blood 125:981-91
Jiang, Changying; Lin, Xin (2015) Analysis of epidermal growth factor-induced NF-?B signaling. Methods Mol Biol 1280:75-102
Zhao, Xue-Qiang; Zhu, Le-Le; Chang, Qing et al. (2014) C-type lectin receptor dectin-3 mediates trehalose 6,6'-dimycolate (TDM)-induced Mincle expression through CARD9/Bcl10/MALT1-dependent nuclear factor (NF)-?B activation. J Biol Chem 289:30052-62
Nakaya, Mako; Xiao, Yichuan; Zhou, Xiaofei et al. (2014) Inflammatory T cell responses rely on amino acid transporter ASCT2 facilitation of glutamine uptake and mTORC1 kinase activation. Immunity 40:692-705
Liu, Xikui; Li, Hongxiu; Zhong, Bo et al. (2013) USP18 inhibits NF-?B and NFAT activation during Th17 differentiation by deubiquitinating the TAK1-TAB1 complex. J Exp Med 210:1575-90
Zhu, Le-Le; Zhao, Xue-Qiang; Jiang, Changying et al. (2013) C-type lectin receptors Dectin-3 and Dectin-2 form a heterodimeric pattern-recognition receptor for host defense against fungal infection. Immunity 39:324-34
Zhang, Liang; Pham, Lan V; Newberry, Kate J et al. (2013) In vitro and in vivo therapeutic efficacy of carfilzomib in mantle cell lymphoma: targeting the immunoproteasome. Mol Cancer Ther 12:2494-504
Blonska, Marzenna; Joo, Donghyun; Nurieva, Roza I et al. (2013) Activation of the transcription factor c-Maf in T cells is dependent on the CARMA1-IKK? signaling cascade. Sci Signal 6:ra110

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