The involvement of oxysterol-binding protein related protein (ORP) 6 in the counter-transport of phosphatidylinositol-4-phosphate (PI4P) and phosphatidylserine (PS) in neurons.
The involvement of oxysterol-binding protein related protein (ORP) 6 in the counter-transport of phosphatidylinositol-4-phosphate (PI4P) and phosphatidylserine (PS) in neurons.
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氧甾醇结合蛋白相关蛋白(ORP) 6参与磷脂酰肌醇-4-磷酸(PI4P)和磷脂酰丝氨酸(PS)在神经元中的反转运。
DOI:
10.1016/j.bbrep.2022.101257
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发表时间:
2022-07
影响因子:
2.7
通讯作者:
Noda, Yasuko
中科院分区:
文献类型:
--
作者:
Mochizuki, Shinya;Miki, Harukata;Zhou, Ruyun;Noda, Yasuko
Oxysterol-binding protein (OSBP)-related protein (ORP) 6, a member of subfamily III in the ORP family, localizes to membrane contact sites between the endoplasmic reticulum (ER) and other organelles and functions in non-vesicular exchange of lipids including phosphatidylinositol-4-phosphate (PI4P) in neurons. In this study, we searched for the lipid counter-transported in exchange for PI4P by using molecular cell biology techniques. Deconvolution microscopy revealed that knockdown of ORP6 partially shifted localization of a phosphatidylserine (PS) marker but not filipin in primary cultured cerebellar neurons. Overexpression of ORP6 constructs lacking the OSBP-related ligand binding domain (ORD) resulted in the same shift of the PS marker. A PI4KⅢα inhibitor specifically inhibiting the synthesis and plasma membrane (PM) localization of PI4P, suppressed the localization of ORP6 and the PS marker at the PM. Overexpression of mutant PS synthase 1 (PSS1) inhibited transport of the PS marker to the PM and relocated the PI4P marker to the PM in Neuro-2A cells. Introduction of ORP6 but not the dominant negative ORP6 constructs, shifted the localization of PS back to the PM. These data collectively suggest the involvement of ORP6 in the counter-transport of PI4P and PS. Knockdown of ORP6 changed localization of PS marker. Localization of PS marker and ORP6 at the PM was suppressed by PI4K inhibitor. ORP6 restored PS from the ER to PM when mutant PSS1 is expressed.
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影响因子:
8.8
作者:
Alvarez-Prats A;Bjelobaba I;Aldworth Z;Baba T;Abebe D;Kim YJ;Stojilkovic SS;Stopfer M;Balla T
通讯作者:
Balla T
DOI:
10.4137/lpi.s31726
发表时间:
2015
期刊:
Lipid insights
影响因子:
--
作者:
Olkkonen VM
通讯作者:
Olkkonen VM
DOI:
10.1126/science.aab1370
发表时间:
2015-07-24
期刊:
Science (New York, N.Y.)
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作者:
Chung J;Torta F;Masai K;Lucast L;Czapla H;Tanner LB;Narayanaswamy P;Wenk MR;Nakatsu F;De Camilli P
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De Camilli P
影响因子:
64.5
作者:
Mesmin, Bruno;Bigay, Joelle;Antonny, Bruno
通讯作者:
Antonny, Bruno
DOI:
10.3233/jad-2012-121585
发表时间:
2013
期刊:
Journal of Alzheimer's disease : JAD
影响因子:
--
作者:
Hughes TM;Rosano C;Evans RW;Kuller LH
通讯作者:
Kuller LH