Loss of PRCD alters number and packaging density of rhodopsin in rod photoreceptor disc membranes.
Loss of PRCD alters number and packaging density of rhodopsin in rod photoreceptor disc membranes.
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DOI:
10.1038/s41598-020-74628-2
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发表时间:
2020-10-21
影响因子:
4.6
通讯作者:
Kolandaivelu S
中科院分区:
文献类型:
--
作者:
Sechrest ER;Murphy J;Senapati S;Goldberg AFX;Park PS;Kolandaivelu S
Progressive rod-cone degeneration (PRCD) is a small protein localized to photoreceptor outer segment (OS) disc membranes. Several mutations in PRCD are linked to retinitis pigmentosa (RP) in canines and humans, and while recent studies have established that PRCD is required for high fidelity disc morphogenesis, its precise role in this process remains a mystery. To better understand the part which PRCD plays in disease progression as well as its contribution to photoreceptor OS disc morphogenesis, we generated a Prcd-KO animal model using CRISPR/Cas9. Loss of PRCD from the retina results in reduced visual function accompanied by slow rod photoreceptor degeneration. We observed a significant decrease in rhodopsin levels in Prcd-KO retina prior to photoreceptor degeneration. Furthermore, ultrastructural analysis demonstrates that rod photoreceptors lacking PRCD display disoriented and dysmorphic OS disc membranes. Strikingly, atomic force microscopy reveals that many disc membranes in Prcd-KO rod photoreceptor neurons are irregular, containing fewer rhodopsin molecules and decreased rhodopsin packing density compared to wild-type discs. This study strongly suggests an important role for PRCD in regulation of rhodopsin incorporation and packaging density into disc membranes, a process which, when dysregulated, likely gives rise to the visual defects observed in patients with PRCD-associated RP.
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影响因子:
4.8
作者:
Liang, Y;Fotiadis, D;Engel, A
通讯作者:
Engel, A
DOI:
10.1083/jcb.201004104
发表时间:
2010-05-31
期刊:
The Journal of cell biology
影响因子:
--
作者:
Linkert M;Rueden CT;Allan C;Burel JM;Moore W;Patterson A;Loranger B;Moore J;Neves C;Macdonald D;Tarkowska A;Sticco C;Hill E;Rossner M;Eliceiri KW;Swedlow JR
通讯作者:
Swedlow JR
影响因子:
3.4
作者:
AGUIRRE, GD;ACLAND, GM
通讯作者:
ACLAND, GM
影响因子:
2.9
作者:
PAPERMASTER, DS;DREYER, WJ
通讯作者:
DREYER, WJ
影响因子:
64.8
作者:
Fotiadis, D;Liang, Y;Palczewski, K
通讯作者:
Palczewski, K