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光感受器细胞功能的后勤支柱:膳食维生素A受体与视紫红质转运体的互补机制

The Logistical Backbone of Photoreceptor Cell Function: Complementary Mechanisms of Dietary Vitamin A Receptors and Rhodopsin Transporters.

作者信息

Leung Matthias, Steinman Jeremy, Li Dorothy, Lor Anjelynt, Gruesen Andrew, Sadah Ahmed, van Kuijk Frederik J, Montezuma Sandra R, Kondkar Altaf A, Radhakrishnan Rakesh, Lobo Glenn P

机构信息

Department of Ophthalmology and Visual Neurosciences, University of Minnesota, Minneapolis, MN 55455, USA.

Department of Ophthalmology, College of Medicine, King Saud University, Riyadh 12271, Saudi Arabia.

出版信息

Int J Mol Sci. 2024 Apr 12;25(8):4278. doi: 10.3390/ijms25084278.

Abstract

In this review, we outline our current understanding of the mechanisms involved in the absorption, storage, and transport of dietary vitamin A to the eye, and the trafficking of rhodopsin protein to the photoreceptor outer segments, which encompasses the logistical backbone required for photoreceptor cell function. Two key mechanisms of this process are emphasized in this manuscript: ocular and systemic vitamin A membrane transporters, and rhodopsin transporters. Understanding the complementary mechanisms responsible for the generation and proper transport of the retinylidene protein to the photoreceptor outer segment will eventually shed light on the importance of genes encoded by these proteins, and their relationship on normal visual function and in the pathophysiology of retinal degenerative diseases.

摘要

在本综述中,我们概述了目前对膳食维生素A吸收、储存并转运至眼部所涉及机制的理解,以及视紫红质蛋白转运至光感受器外段的过程,这一过程包含了光感受器细胞功能所需的后勤保障。本手稿着重强调了这一过程的两个关键机制:眼部和全身的维生素A膜转运蛋白,以及视紫红质转运蛋白。了解负责视黄醛蛋白生成并将其正确转运至光感受器外段的互补机制,最终将阐明这些蛋白所编码基因的重要性,以及它们在正常视觉功能和视网膜退行性疾病病理生理学中的关系。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6612/11050646/b73c765c22b0/ijms-25-04278-g001.jpg

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