Abstract
The molecular machinery of macroautophagy consists of Atg proteins and supports cytoplasmic constituent degradation in lysosomes as its canonical function, phagosome maturation and exocytosis. These different biological processes contribute to cell intrinsic, innate and adaptive immunity. For the respective immune responses, Atg proteins mediate direct pathogen degradation, inflammation restriction, antigen presentation on MHC molecules and survival of memory lymphocyte populations. During adaptive immunity MHC class II presentation of antigens is supported and MHC class I presentation restricted by the macroautophagy machinery. Considering these various functions might allow us to predict the outcome of interventions that manipulate the machinery of Atg proteins as immunotherapies for the benefit of human health.
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