AP-4 mediated ATG9A sorting underlies axonal and autophagosome biogenesis defects in a mouse model of AP-4 deficiency syndrome
AP-4 mediated ATG9A sorting underlies axonal and autophagosome biogenesis defects in a mouse model of AP-4 deficiency syndrome
复制标题
AP-4 介导的 ATG9A 分选是 AP-4 缺乏综合征小鼠模型中轴突和自噬体生物发生缺陷的基础
DOI:
10.1101/235101
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
Ivankovic D
中科院分区:
文献类型:
--
作者:
Ivankovic D
Adaptor protein (AP) complexes have critical roles in transmembrane protein sorting. AP-4 remains poorly understood in the brain despite its loss of function leading to a hereditary spastic paraplegia termed AP-4 deficiency syndrome. Here we demonstrate that knockout (KO) of AP-4 in a mouse model leads to thinning of the corpus callosum and ventricular enlargement, anatomical defects previously described in patients. At the cellular level, we find that AP-4 KO leads to defects in axonal extension and branching, in addition to aberrant distal swellings. Interestingly, we show that ATG9A, a key protein in autophagosome maturation, is critically dependent on AP-4 for its sorting from thetrans-golgi network. Failure of AP-4 mediated ATG9A sorting results in its dramatic retention in thetrans-golgi networkin vitroandin vivoleading to a specific reduction of the axonal pool of ATG9A. As a result, autophagosome biogenesis is aberrant in the axon of AP-4 deficient neurons. The specific alteration to axonal integrity and axonal autophagosome maturation in AP-4 knockout neurons may underpin the pathology of AP-4 deficiency.
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DOI:
10.1097/nen.0000000000000000
发表时间:
2013-11
影响因子:
3.2
作者:
Watanabe F;Arnold WD;Hammer RE;Ghodsizadeh O;Moti H;Schumer M;Hashmi A;Hernandez A;Sneh A;Sahenk Z;Kisanuki YY
通讯作者:
Kisanuki YY
影响因子:
7.7
作者:
Vaccaro V;Devine MJ;Higgs NF;Kittler JT
通讯作者:
Kittler JT
DOI:
10.1083/jcb.201310021
发表时间:
2014-01-06
期刊:
The Journal of cell biology
影响因子:
--
作者:
Bonifacino JS
通讯作者:
Bonifacino JS
影响因子:
--
作者:
Alvarez-Erviti, Lydia;Rodriguez-Oroz, Maria C.;Schapira, Anthony H. V.
通讯作者:
Schapira, Anthony H. V.
影响因子:
5.2
作者:
Abdollahpour, Hengameh;Alawi, Malik;Kutsche, Kerstin
通讯作者:
Kutsche, Kerstin