alexa The contribution of autophagy to lymphocyte survival and homeostasis.


Journal of Clinical & Cellular Immunology

Author(s): McLeod IX, Jia W, He YW

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Abstract Over the life span of a T lymphocyte, from thymic development to death, it is subjected to a variety of stresses and stimuli. Upon receipt of each stress or stimulus, a potentially life-changing fate decision must be made, namely, whether to commit to a form of programmed cell death or to make the necessary adaptations to effectively deal with the changing environment. In our laboratory, we have identified several stresses that a T lymphocyte will encounter during a normal life span. Our studies have focused on how T cells utilize autophagy to get a grasp on the situation, or in cases in which survival is untenable, how T cells use autophagy to hasten their demise. This review focuses on the functions of T-cell autophagy in maintaining homeostasis, eliminating excess or dangerous levels of mitochondria, trimming levels of endoplasmic reticulum, and promoting a healthy metabolic level to allow cells to perform as productive components of the immune system. In addition, the use of autophagy signaling molecules to perform autophagy-independent tasks involved in the maintenance of immune homeostasis is discussed. © 2012 John Wiley & Sons A/S.
This article was published in Immunol Rev and referenced in Journal of Clinical & Cellular Immunology

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