New Insight into Inter-kingdom Communication: Horizontal Transfer of Mobile Small RNAs

Small RNAs (sRNAs), including small interfering RNAs (siRNAs) and microRNAs (miRNAs), are conventionally regarded as critical molecular regulators of various intracellular processes. However, recent accumulating evidence indicates that sRNAs can be transferred within cells and tissues and even acros...

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Main Authors: Xi Chen, Geyu Zhou, Yu Zhou
Format: Article
Language:English
Published: Frontiers Media S.A. 2017-05-01
Series:Frontiers in Microbiology
Subjects:
Online Access:http://journal.frontiersin.org/article/10.3389/fmicb.2017.00768/full
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author Xi Chen
Geyu Zhou
Yu Zhou
author_facet Xi Chen
Geyu Zhou
Yu Zhou
author_sort Xi Chen
collection DOAJ
description Small RNAs (sRNAs), including small interfering RNAs (siRNAs) and microRNAs (miRNAs), are conventionally regarded as critical molecular regulators of various intracellular processes. However, recent accumulating evidence indicates that sRNAs can be transferred within cells and tissues and even across species. In plants, nematodes and microbes, these mobile sRNAs can mediate inter-kingdom communication, environmental sensing, gene expression regulation, host-parasite defense and many other biological functions. Strikingly, a recent study by our group suggested that ingested plant miRNAs are transferred to blood, accumulate in tissues and regulate transcripts in consuming animals. While our and other independent groups’ subsequent studies further explored the emerging field of sRNA-mediated crosstalk between species, some groups reported negative results and questioned its general applicability. Thus, further studies carefully evaluating the horizontal transfer of exogenous sRNAs and its potential biological functions are urgently required. Here, we review the current state of knowledge in the field of the horizontal transfer of mobile sRNAs, suggest its future directions and key points for examination and discuss its potential mechanisms and application prospects in nutrition, agriculture and medicine.
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spelling doaj.art-1caa133ce97f49f3918661b7d18373b62022-12-21T22:39:38ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2017-05-01810.3389/fmicb.2017.00768238994New Insight into Inter-kingdom Communication: Horizontal Transfer of Mobile Small RNAsXi ChenGeyu ZhouYu ZhouSmall RNAs (sRNAs), including small interfering RNAs (siRNAs) and microRNAs (miRNAs), are conventionally regarded as critical molecular regulators of various intracellular processes. However, recent accumulating evidence indicates that sRNAs can be transferred within cells and tissues and even across species. In plants, nematodes and microbes, these mobile sRNAs can mediate inter-kingdom communication, environmental sensing, gene expression regulation, host-parasite defense and many other biological functions. Strikingly, a recent study by our group suggested that ingested plant miRNAs are transferred to blood, accumulate in tissues and regulate transcripts in consuming animals. While our and other independent groups’ subsequent studies further explored the emerging field of sRNA-mediated crosstalk between species, some groups reported negative results and questioned its general applicability. Thus, further studies carefully evaluating the horizontal transfer of exogenous sRNAs and its potential biological functions are urgently required. Here, we review the current state of knowledge in the field of the horizontal transfer of mobile sRNAs, suggest its future directions and key points for examination and discuss its potential mechanisms and application prospects in nutrition, agriculture and medicine.http://journal.frontiersin.org/article/10.3389/fmicb.2017.00768/fullinter-kingdom communicationsmall RNAsmall interfering RNAmicroRNAmobile RNA
spellingShingle Xi Chen
Geyu Zhou
Yu Zhou
New Insight into Inter-kingdom Communication: Horizontal Transfer of Mobile Small RNAs
Frontiers in Microbiology
inter-kingdom communication
small RNA
small interfering RNA
microRNA
mobile RNA
title New Insight into Inter-kingdom Communication: Horizontal Transfer of Mobile Small RNAs
title_full New Insight into Inter-kingdom Communication: Horizontal Transfer of Mobile Small RNAs
title_fullStr New Insight into Inter-kingdom Communication: Horizontal Transfer of Mobile Small RNAs
title_full_unstemmed New Insight into Inter-kingdom Communication: Horizontal Transfer of Mobile Small RNAs
title_short New Insight into Inter-kingdom Communication: Horizontal Transfer of Mobile Small RNAs
title_sort new insight into inter kingdom communication horizontal transfer of mobile small rnas
topic inter-kingdom communication
small RNA
small interfering RNA
microRNA
mobile RNA
url http://journal.frontiersin.org/article/10.3389/fmicb.2017.00768/full
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