PMID- 21768114 OWN - NLM STAT- MEDLINE DCOM- 20111205 LR - 20211020 IS - 1083-351X (Electronic) IS - 0021-9258 (Print) IS - 0021-9258 (Linking) VI - 286 IP - 36 DP - 2011 Sep 9 TI - Cooperative regulation of NOTCH1 protein-phosphatidylinositol 3-kinase (PI3K) signaling by NOD1, NOD2, and TLR2 receptors renders enhanced refractoriness to transforming growth factor-beta (TGF-beta)- or cytotoxic T-lymphocyte antigen 4 (CTLA-4)-mediated impairment of human dendritic cell maturation. PG - 31347-60 LID - 10.1074/jbc.M111.232413 [doi] AB - Dendritic cells (DCs) as sentinels of the immune system are important for eliciting both primary and secondary immune responses to a plethora of microbial pathogens. Cooperative stimulation of a complex set of pattern-recognition receptors, including TLR2 and nucleotide-binding oligomerization domain (NOD)-like receptors on DCs, acts as a rate-limiting factor in determining the initiation and mounting of the robust immune response. It underscores the need for "decoding" these multiple receptor interactions. In this study, we demonstrate that TLR2 and NOD receptors cooperatively regulate functional maturation of human DCs. Intriguingly, synergistic stimulation of TLR2 and NOD receptors renders enhanced refractoriness to TGF-beta- or CTLA-4-mediated impairment of human DC maturation. Signaling perturbation data suggest that NOTCH1-PI3K signaling dynamics assume critical importance in TLR2- and NOD receptor-mediated surmounting of CTLA-4- and TGF-beta-suppressed maturation of human DCs. Interestingly, the NOTCH1-PI3K signaling axis holds the capacity to regulate DC functions by virtue of PKCdelta-MAPK-dependent activation of NF-kappaB. This study provides mechanistic and functional insights into TLR2- and NOD receptor-mediated regulation of DC functions and unravels NOTCH1-PI3K as a signaling cohort for TLR2 and NOD receptors. These findings serve in building a conceptual foundation for the design of improved strategies for adjuvants and immunotherapies against infectious diseases. FAU - Ghorpade, Devram Sampat AU - Ghorpade DS AD - Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore 560012, India. FAU - Kaveri, Srini V AU - Kaveri SV FAU - Bayry, Jagadeesh AU - Bayry J FAU - Balaji, Kithiganahalli Narayanaswamy AU - Balaji KN LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Retracted Publication DEP - 20110715 PL - United States TA - J Biol Chem JT - The Journal of biological chemistry JID - 2985121R RN - 0 (CTLA-4 Antigen) RN - 0 (CTLA4 protein, human) RN - 0 (NF-kappa B) RN - 0 (NOD1 protein, human) RN - 0 (NOD2 protein, human) RN - 0 (Nod1 Signaling Adaptor Protein) RN - 0 (Nod2 Signaling Adaptor Protein) RN - 0 (Receptor, Notch1) RN - 0 (TLR2 protein, human) RN - 0 (Toll-Like Receptor 2) RN - 0 (Transforming Growth Factor beta) RN - EC 2.7.1.137 (Phosphatidylinositol 3-Kinase) SB - IM RIN - J Biol Chem. 2019 Dec 13;294(50):19449. PMID: 31836676 MH - CTLA-4 Antigen/immunology MH - Cell Differentiation/immunology MH - Dendritic Cells/*cytology/immunology MH - Humans MH - NF-kappa B/metabolism MH - Nod1 Signaling Adaptor Protein/immunology/*metabolism MH - Nod2 Signaling Adaptor Protein/immunology/*metabolism MH - Phosphatidylinositol 3-Kinase/immunology/*metabolism MH - Receptor, Notch1/immunology/*metabolism MH - Signal Transduction/*immunology MH - Toll-Like Receptor 2/immunology/*metabolism MH - Transforming Growth Factor beta/immunology PMC - PMC3173143 EDAT- 2011/07/20 06:00 MHDA- 2011/12/13 00:00 PMCR- 2012/09/09 CRDT- 2011/07/20 06:00 PHST- 2011/07/20 06:00 [entrez] PHST- 2011/07/20 06:00 [pubmed] PHST- 2011/12/13 00:00 [medline] PHST- 2012/09/09 00:00 [pmc-release] AID - S0021-9258(20)72245-3 [pii] AID - M111.232413 [pii] AID - 10.1074/jbc.M111.232413 [doi] PST - ppublish SO - J Biol Chem. 2011 Sep 9;286(36):31347-60. doi: 10.1074/jbc.M111.232413. Epub 2011 Jul 15.