Diverse Long RNAs Are Differentially Sorted into Extracellular Vesicles Secreted by Colorectal Cancer Cells.

Diverse Long RNAs Are Differentially Sorted into Extracellular Vesicles Secreted by Colorectal Cancer Cells.
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DOI:
10.1016/j.celrep.2018.09.054
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发表时间:
2018-10-16
期刊:
影响因子:
8.8
通讯作者:
Patton JG
Patton JG
中科院分区:
生物学1区
文献类型:
--
作者:
Hinger SA;Cha DJ;Franklin JL;Higginbotham JN;Dou Y;Ping J;Shu L;Prasad N;Levy S;Zhang B;Liu Q;Weaver AM;Coffey RJ;Patton JG

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The regulation and functional roles of secreted coding and long noncoding RNAs (lncRNAs; >200 nt) are largely unknown. We previously showed that mutant KRAS colorectal cancer (CRC) cells release extracellular vesicles (EVs) containing distinct proteomes, microRNAs (miRNAs), and circular RNAs. Here, we comprehensively identify diverse classes of CRC extracellular long RNAs secreted in EVs and demonstrate differential export of specific RNAs. Distinct noncoding RNAs, including antisense transcripts and transcripts derived from pseudogenes, are enriched in EVs compared to cellular profiles. We detected strong enrichment of Rab13 in mutant KRAS EVs and demonstrate functional delivery of Rab13 mRNA to recipient cells. To assay functional transfer of lncRNAs, we implemented a CRISPR/ Cas9-based RNA-tracking system to monitor delivery to recipient cells. We show that gRNAs containing export signals from secreted RNAs can be transferred from donor to recipient cells. Our data support the existence of cellular mechanisms to selectively export diverse classes of RNA. Extracellular vesicles (EVs) contain protein and RNA cargo that can be transferred between cells. Hinger et al. identify distinct subsets of cellular coding and long noncoding RNAs that are enriched in EVs that can be functionally transferred between cells, supporting a regulated form of cell-cell communication.
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