The kinesin KIF1C transports APC-dependent mRNAs to cell protrusions.
The kinesin KIF1C transports APC-dependent mRNAs to cell protrusions.
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DOI:
10.1261/rna.078576.120
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发表时间:
2021-12
期刊:
影响因子:
--
通讯作者:
Mili S
中科院分区:
文献类型:
--
作者:
Pichon X;Moissoglu K;Coleno E;Wang T;Imbert A;Robert MC;Peter M;Chouaib R;Walter T;Mueller F;Zibara K;Bertrand E;Mili S
RNA localization and local translation are important for numerous cellular functions. In mammals, a class of mRNAs localize to cytoplasmic protrusions in an APC-dependent manner, with roles during cell migration. Here, we investigated this localization mechanism. We found that the KIF1C motor interacts with APC-dependent mRNAs and is required for their localization. Live cell imaging revealed rapid, active transport of single mRNAs over long distances that requires both microtubules and KIF1C. Two-color imaging directly revealed single mRNAs transported by single KIF1C motors, with the 3′UTR being sufficient to trigger KIF1C-dependent RNA transport and localization. Moreover, KIF1C remained associated with peripheral, multimeric RNA clusters and was required for their formation. These results reveal a widespread RNA transport pathway in mammalian cells, in which the KIF1C motor has a dual role in transporting RNAs and clustering them within cytoplasmic protrusions. Interestingly, KIF1C also transports its own mRNA, suggesting a possible feedback loop acting at the level of mRNA transport.
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