PMID- 22247332 OWN - NLM STAT- MEDLINE DCOM- 20120531 LR - 20120402 IS - 1530-6860 (Electronic) IS - 0892-6638 (Linking) VI - 26 IP - 4 DP - 2012 Apr TI - Role of autophagy in immunity and autoimmunity, with a special focus on systemic lupus erythematosus. PG - 1400-12 LID - 10.1096/fj.11-194175 [doi] AB - Autophagy is a lysosome-mediated catabolic process that allows cells to degrade unwanted cytoplasmic constituents and to recycle nutrients. Autophagy is also involved in innate and adaptive immune responses, playing a key role in interactions against microbes, in antigen processing for major histocompatibility complex (MHC) presentation, and in lymphocyte development, survival, and proliferation. Over recent years, perturbations in autophagy have been implicated in a number of diseases, including autoimmunity. Systemic lupus erythematosus (SLE) is a multifactorial disease characterized by autoimmune responses against self-antigens generated by dying cells. Genome-wide association studies have linked several single-nucleotide polymorphisms (SNPs) in the autophagy-related gene Atg5 to SLE susceptibility. Loss of Atg5-dependent effects, including clearance of dying cells and cell antigen presentation, might contribute to the autoimmunity and inflammation associated with SLE. Moreover, activation of the mammalian target of rapamycin (mTOR), a key player in the autophagy regulation, has recently been demonstrated in SLE, confirming an altered autophagy pathway in this disease. In the present review, we summarize the autophagy mechanisms, their molecular regulation, and their relevance in immunity and autoimmunity. The potential of targeting autophagy pathway in SLE, by developing innovative therapeutic approaches, has finally been discussed. FAU - Pierdominici, Marina AU - Pierdominici M AD - Department of Cell Biology and Neurosciences, Istituto Superiore di Sanita, Rome, Italy. FAU - Vomero, Marta AU - Vomero M FAU - Barbati, Cristiana AU - Barbati C FAU - Colasanti, Tania AU - Colasanti T FAU - Maselli, Angela AU - Maselli A FAU - Vacirca, Davide AU - Vacirca D FAU - Giovannetti, Antonello AU - Giovannetti A FAU - Malorni, Walter AU - Malorni W FAU - Ortona, Elena AU - Ortona E LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20120112 PL - United States TA - FASEB J JT - FASEB journal : official publication of the Federation of American Societies for Experimental Biology JID - 8804484 SB - IM MH - *Adaptive Immunity MH - Autoimmunity/*immunology MH - Autophagy/*immunology MH - Humans MH - *Immunity, Innate MH - Lupus Erythematosus, Systemic/*immunology/physiopathology MH - Lymphocytes/immunology MH - Phagocytes/immunology EDAT- 2012/01/17 06:00 MHDA- 2012/06/01 06:00 CRDT- 2012/01/17 06:00 PHST- 2012/01/17 06:00 [entrez] PHST- 2012/01/17 06:00 [pubmed] PHST- 2012/06/01 06:00 [medline] AID - fj.11-194175 [pii] AID - 10.1096/fj.11-194175 [doi] PST - ppublish SO - FASEB J. 2012 Apr;26(4):1400-12. doi: 10.1096/fj.11-194175. Epub 2012 Jan 12.