Neural retina and MerTK-independent apical polarity of alphavbeta5 integrin receptors in the retinal pigment epithelium.
Neural retina and MerTK-independent apical polarity of alphavbeta5 integrin receptors in the retinal pigment epithelium.
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DOI:
10.1007/978-1-4419-1399-9_15
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发表时间:
2010
影响因子:
--
通讯作者:
Finnemann, Silvia C.
中科院分区:
文献类型:
--
作者:
Mallavarapu, Mallika;Finnemann, Silvia C.
The apical plasma membrane domain of retinal pigment epithelial (RPE) cells in the eye faces the outer segment portions of rods and cones and the inter-photoreceptor matrix in the subretinal space. Two important receptor-mediated interactions between the apical surface of the retinal pigment epithelium (RPE) and adjacent photoreceptors are adhesion ensuring outer segment alignment and diurnal phagocytosis of shed outer segment fragments contributing to outer segment renewal. Both depend on the apical distribution of the integrin family adhesion receptor αvβ5 as lack of αvβ5 in mice causes weakened retinal adhesion and asynchronous phagocytosis. With age, lack of αvβ5 leads to accumulation of harmful lipofuscin in the RPE and to vision loss. Here, we discuss three different possible mechanisms that could generate the exclusive apical distribution of αvβ5 integrin receptors in the RPE. (1) αvβ5 could be apical in the RPE because RPE attachment to neural retina generally or αvβ5 ligands specifically in the subretinal space stabilize apical but not basolateral αvβ5 surface receptors. (2) αvβ5 could be apical in the RPE because it resides in a complex with other components of the phagocytic machinery that assembles at the apical, phagocytic surface of the RPE. (3) αvβ5 could be apical due to mechanisms intrinsic to this receptor protein and specifically to its β5 integrin subunit.
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影响因子:
7.8
作者:
Gundersen, D;Powell, S K;Rodriguez-Boulan, E
通讯作者:
Rodriguez-Boulan, E
DOI:
10.1084/jem.20041447
发表时间:
2004-12-20
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Nandrot EF;Kim Y;Brodie SE;Huang X;Sheppard D;Finnemann SC
通讯作者:
Finnemann SC
影响因子:
64.8
作者:
HORWITZ, A;DUGGAN, K;BURRIDGE, K
通讯作者:
BURRIDGE, K
DOI:
10.1073/pnas.0704756104
发表时间:
2007-07-17
影响因子:
11.1
作者:
Nandrot, Emeline F.;Anand, Monika;Finnemann, Silvia C.
通讯作者:
Finnemann, Silvia C.
DOI:
10.1016/j.bbrc.2007.10.049
发表时间:
2007-12-21
影响因子:
3.1
作者:
Singh, Sukhwinder;D'mello, Veera;Birge, Raymond B.
通讯作者:
Birge, Raymond B.