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ABSTRACT
Innate immune system provides the first line of defense against pathogenic organisms. It has a varied and large collection of molecules known as pattern recognition receptors (PRRs) which can tackle the pathogens promptly and effectively. Toll-like receptors (TLRs) and NOD-like receptors (NLRs) are members of the PRR family that recognize pathogen associated molecular patterns (PAMPs) and play pivotal roles to mediate defense against infections from bacteria, fungi, virus and various other pathogens. In this review, we discuss the critical roles of TLRs and NLRs in the regulation of host immune-effector functions such as cytokine production, phagosome-lysosome fusion, inflammasome activation, autophagy, antigen presentation, and B and T cell immune responses that are known to be essential for mounting a protective immune response against the pathogens. This review may be helpful to design TLRs/NLRs based immunotherapeutics to control various infections and pathophysiological disorders.
Acknowledgements
K.D. and G.P. were supported by fellowships from Indian Council of Medical Research, Govt. of India. A.U. and M.K.B. were supported by fellowships from Council of Scientific & Industrial Research, Govt. of India. The laboratory of S.M. is supported by the grants from Department of Biotechnology (DBT), Govt. of India (BT/PR11605/NNT/28/758/2014 and BT/PR12817/COE/34/23/2015) and Department of Science and Technology-Science & Engineering Research Board (DST-SERB), Govt. of India (EMR/2016/000644) and also core grant from CDFD by DBT.
Declaration of interest
Authors declare no conflict of interest related to this manuscript.