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Han Peng, Jong Kook Park, Robert M. Lavker; Autophagy and Macropinocytosis: Keeping an Eye on the Corneal/Limbal Epithelia. Invest. Ophthalmol. Vis. Sci. 2017;58(1):416-423. doi: https://doi.org/10.1167/iovs.16-21111.
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Autophagy and macropinocytosis are processes that are vital for cellular homeostasis, and help cells respond to stress and take up large amounts of material, respectively. The limbal and corneal epithelia have the machinery necessary to carry out both processes; however, autophagy and macropinocytosis are relatively understudied in these two epithelia. In this Perspectives, we describe the basic principles behind macropinocytosis and autophagy, discuss how these two processes are regulated in the limbal and corneal epithelia, consider how these two processes impact on the physiology of limbal and corneal epithelia, and elaborate on areas of future research in autophagy and macropinocytosis as related to the limbal/corneal epithelia.
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