Drosophila Strip serves as a platform for early endosome organization during axon elongation
Nature Communications Volume 5
Page 5180-
published_at 2014-10-14
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| File | |
| Title ( eng ) |
Drosophila Strip serves as a platform for early endosome organization during axon elongation
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| Creator |
Sakuma Chisako
Kawauchi Takeshi
Haraguchi Shuka
Shikanai Mima
Yamaguchi Yoshifumi
Gelfand Vladimir I
Luo Liqun
Miura Masayuki
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| Source Title |
Nature Communications
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| Volume | 5 |
| Start Page | 5180 |
| Abstract |
Early endosomes are essential for regulating cell signalling and controlling the amount of cell surface molecules during neuronal morphogenesis. Early endosomes undergo retrograde transport (clustering) before their homotypic fusion. Small GTPase Rab5 is known to promote early endosomal fusion, but the mechanism linking the transport/clustering with Rab5 activity is unclear. Here we show that Drosophila Strip is a key regulator for neuronal morphogenesis. Strip knockdown disturbs the early endosome clustering, and Rab5-positive early endosomes become smaller and scattered. Strip genetically and biochemically interacts with both Glued (the regulator of dynein-dependent transport) and Sprint (the guanine nucleotide exchange factor for Rab5), suggesting that Strip is a molecular linker between retrograde transport and Rab5 activation. Overexpression of an active form of Rab5 in strip-mutant neurons suppresses the axon elongation defects. Thus, Strip acts as a molecular platform for the early endosome organization that has important roles in neuronal morphogenesis.
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| Descriptions |
This work was supported by grants from the National Institute of General Medical Science of the National Institutes of Health (R01-GM085232 to V.I.G.), the National Institutes of Health (R01-DC005982 to L.L.), the Japanese Ministry of Education, Science, Sports, Culture, and Technology (MEXT), the Japan Society for the Promotion of Science, and the Japan Science and Technology Agency (to C.S., K.T., Y.Y., M.M., and T.C.).
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
Nature Publishing Group
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| Date of Issued | 2014-10-14 |
| Rights |
© 2014 Macmillan Publishers Limited.
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[DOI] 10.1038/ncomms6180
[DOI] https://doi.org/10.1038/ncomms6180
[ISSN] 2041-1723
[PMID] 25312435
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