Multiple ITAM-coupled NK-cell receptors engage the Bcl10/Malt1 complex via Carma1 for NF-kappaB and MAPK activation to selectively control cytokine production. 2008

Olaf Gross, and Christina Grupp, and Christian Steinberg, and Stephanie Zimmermann, and Dominikus Strasser, and Nicole Hannesschläger, and Wolfgang Reindl, and Helena Jonsson, and Hairong Huo, and Dan R Littman, and Christian Peschel, and Wayne M Yokoyama, and Anne Krug, and Jürgen Ruland
III Medizinische Klinik, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.

Natural killer (NK) cells are innate immune cells that mediate resistance against viruses and tumors. They express multiple activating receptors that couple to immunoreceptor tyrosine-based activation motif (ITAM)-containing signaling chains for downstream cell activation. Ligation of activating NK-cell receptors induces NK-cell cytotoxicity and cytokine release. How these distinct events are selectively controlled is not well defined. Here we report the identification of a specific signaling pathway that operates downstream of the ITAM-coupled NK-cell receptors NK1.1, Ly49D, Ly49H, and NKG2D. Using primary NK cells from Bcl10(-/-), Malt1(-/-), Carma1(-/-), and Card9(-/-) mice, we demonstrate a key role for Bcl10 signalosomes in the activation of canonical NF-kappaB signaling as well as JNK and p38 MAPK upon NK-cell triggering. Bcl10 directly cooperates with Malt1 and depends on Carma1 (Card11) but not on Card9 for NK-cell activation. These Bcl10-dependent cascades selectively control cytokine and chemokine production but do not affect NK-cell differentiation or killing. Thus, we identify a molecular basis for the segregation of NK-cell receptor-induced signals for cytokine release and target cell killing and extend the previously recognized roles for CARD-protein/Bcl10/Malt1 complexes in ITAM receptor signaling in innate and adaptive immune cells.

UI MeSH Term Description Entries
D007694 Killer Cells, Natural Bone marrow-derived lymphocytes that possess cytotoxic properties, classically directed against transformed and virus-infected cells. Unlike T CELLS; and B CELLS; NK CELLS are not antigen specific. The cytotoxicity of natural killer cells is determined by the collective signaling of an array of inhibitory and stimulatory CELL SURFACE RECEPTORS. A subset of T-LYMPHOCYTES referred to as NATURAL KILLER T CELLS shares some of the properties of this cell type. NK Cells,Natural Killer Cells,Cell, NK,Cell, Natural Killer,Cells, NK,Cells, Natural Killer,Killer Cell, Natural,NK Cell,Natural Killer Cell
D009363 Neoplasm Proteins Proteins whose abnormal expression (gain or loss) are associated with the development, growth, or progression of NEOPLASMS. Some neoplasm proteins are tumor antigens (ANTIGENS, NEOPLASM), i.e. they induce an immune reaction to their tumor. Many neoplasm proteins have been characterized and are used as tumor markers (BIOMARKERS, TUMOR) when they are detectable in cells and body fluids as monitors for the presence or growth of tumors. Abnormal expression of ONCOGENE PROTEINS is involved in neoplastic transformation, whereas the loss of expression of TUMOR SUPPRESSOR PROTEINS is involved with the loss of growth control and progression of the neoplasm. Proteins, Neoplasm
D000074018 B-Cell CLL-Lymphoma 10 Protein A signal transducing adaptor protein that contains an N-terminal CARD DOMAIN and functions in the ADAPTIVE IMMUNE RESPONSE. It promotes PRO-CASPASE-9 maturation and APOPTOSIS, activation of NF-KAPPA B, and is a substrate for MALT1 PARACASPASE. B-Cell Lymphoma-Leukemia 10 Protein,Bcl-10 Protein,Bcl10 Protein,B Cell CLL Lymphoma 10 Protein,B Cell Lymphoma Leukemia 10 Protein,Bcl 10 Protein
D000074884 Mucosa-Associated Lymphoid Tissue Lymphoma Translocation 1 Protein A caspase-like cysteine endopeptidase that also exhibits ubiquitin ligase activity. It contains an N-terminal DEATH DOMAIN, two IMMUNOGLOBULIN-LIKE DOMAINS, and localizes to the perinuclear region of MONOCYTES, where it functions in activation of NF-KAPPA B; it also binds to and activates TRAF6. Chromosomal translocations involving the MALT1 and BIRC2 genes are associated with MALT LYMPHOMA, and mutations in the MALT1 gene are associated with Type 12 IMMUNODEFICIENCY SYNDROMES. MALT-1 Protein,MALT1 Paracaspase,MALT1 Protein,Paracaspase,MALT 1 Protein,Mucosa Associated Lymphoid Tissue Lymphoma Translocation 1 Protein,Paracaspase, MALT1
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D016207 Cytokines Non-antibody proteins secreted by inflammatory leukocytes and some non-leukocytic cells, that act as intercellular mediators. They differ from classical hormones in that they are produced by a number of tissue or cell types rather than by specialized glands. They generally act locally in a paracrine or autocrine rather than endocrine manner. Cytokine
D016328 NF-kappa B Ubiquitous, inducible, nuclear transcriptional activator that binds to enhancer elements in many different cell types and is activated by pathogenic stimuli. The NF-kappa B complex is a heterodimer composed of two DNA-binding subunits: NF-kappa B1 and relA. Immunoglobulin Enhancer-Binding Protein,NF-kappa B Complex,Nuclear Factor kappa B,Transcription Factor NF-kB,kappa B Enhancer Binding Protein,Ig-EBP-1,NF-kB,NF-kappaB,Nuclear Factor-Kappab,Complex, NF-kappa B,Enhancer-Binding Protein, Immunoglobulin,Factor NF-kB, Transcription,Factor-Kappab, Nuclear,Ig EBP 1,Immunoglobulin Enhancer Binding Protein,NF kB,NF kappa B Complex,NF kappaB,NF-kB, Transcription Factor,Nuclear Factor Kappab,Transcription Factor NF kB
D046912 Multiprotein Complexes Macromolecular complexes formed from the association of defined protein subunits. Macromolecular Protein Complexes,Complexes, Macromolecular Protein,Complexes, Multiprotein,Protein Complexes, Macromolecular
D048051 p38 Mitogen-Activated Protein Kinases A mitogen-activated protein kinase subfamily that regulates a variety of cellular processes including CELL GROWTH PROCESSES; CELL DIFFERENTIATION; APOPTOSIS; and cellular responses to INFLAMMATION. The P38 MAP kinases are regulated by CYTOKINE RECEPTORS and can be activated in response to bacterial pathogens. Mitogen-Activated Protein Kinase p38,p38 Mitogen-Activated Protein Kinase,p38 MAP Kinase,p38 MAPK,p38 Protein Kinase,p38 SAPK,MAP Kinase, p38,MAPK, p38,Mitogen Activated Protein Kinase p38,Protein Kinase, p38,p38 Mitogen Activated Protein Kinase,p38 Mitogen Activated Protein Kinases
D048670 MAP Kinase Kinase 4 A mitogen-activated protein kinase kinase with specificity for JNK MITOGEN-ACTIVATED PROTEIN KINASES; P38 MITOGEN-ACTIVATED PROTEIN KINASES and the RETINOID X RECEPTORS. It takes part in a SIGNAL TRANSDUCTION pathway that is activated in response to cellular stress. JN Kinase Kinase,JNK Kinase,JNK-Activating Protein Kinase,JNKK1 Protein Kinase,Jun Amino-Terminal Kinase Kinase,MEK4 Protein Kinase,Mitogen-Activated Protein Kinase Kinase 4,SAP Kinase Kinase 1,SAP Kinase-Extracellular Signal-Regulated Kinase Kinase 1,SAPK-ERK Kinase 1,SEK1 Protein Kinase,Stress-Activated Protein Kinase Kinase 1,JNK Activating Protein Kinase,Jun Amino Terminal Kinase Kinase,Kinase, JNKK1 Protein,Mitogen Activated Protein Kinase Kinase 4,Protein Kinase, JNK-Activating,Protein Kinase, JNKK1,Protein Kinase, MEK4,Protein Kinase, SEK1,SAP Kinase Extracellular Signal Regulated Kinase Kinase 1,SAPK ERK Kinase 1,Stress Activated Protein Kinase Kinase 1

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