1. In vivo function of the ER-Golgi transport protein LMAN1 in photoreceptor homeostasis.
- Author
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Hao H, Gregorski J, Qian H, Li Y, Gao CY, Idrees S, and Zhang B
- Subjects
- Animals, Biological Transport physiology, Mannose-Binding Lectins genetics, Membrane Proteins genetics, Mice, Mice, Knockout, Endoplasmic Reticulum metabolism, Golgi Apparatus metabolism, Homeostasis physiology, Mannose-Binding Lectins metabolism, Membrane Proteins metabolism, Photoreceptor Cells, Vertebrate physiology
- Abstract
LMAN1 is a type I transmembrane protein that selectively transports its cargo proteins from ER to ER-Golgi intermediate compartment (ERGIC) and Golgi. Lman1 is a direct target of the transcription factor NRL in mouse retina. Therefore, we examined the in vivo function of LMAN1 in retina. Although Lman1 (- / -) mouse eyes did not show abnormality in histology and electroretinogram analysis at 3 months, Lman1 (- / -) retina at 6 months showed a decrease in cis-Golgi markers GM130 and GRASP65. We also observed abnormal level and location of Rhodopsin in these mice. Taken together, LMAN1 may play a role in photoreceptor gene transport and homeostasis.
- Published
- 2014
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