2017
DOI: 10.1038/cdd.2017.127
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The miR-183/ItgA3 axis is a key regulator of prosensory area during early inner ear development

Abstract: MicroRNAs are important regulators of gene expression and are involved in cellular processes such as proliferation or differentiation, particularly during development of numerous organs including the inner ear. However, it remains unknown if miRNAs are required during the earliest stages of otocyst and cochlear duct development. Here, we report that a conditional loss of Dicer expression in the otocyst impairs the early development of the inner ear as a result of the accumulation of DNA damage that trigger p53… Show more

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Cited by 12 publications
(3 citation statements)
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“…The absence of a retinal phenotype in any of the mutants indicates that, at least in zebrafish, these miRNAs are collectively dispensable for that tissue. Our study is consistent with previous reports describing their role in hair cells 2426,31,61,62 , and expands on those findings by shedding light on their relative contribution to the support of those cells. Because neither the mir-183 lri70 , mir-96 lri60 , nor mir-182 lri61 mutants had compromised hair cells, we can also conclude that there is no absolute requirement for any one of the three miRNAs.…”
Section: Discussionsupporting
confidence: 93%
“…The absence of a retinal phenotype in any of the mutants indicates that, at least in zebrafish, these miRNAs are collectively dispensable for that tissue. Our study is consistent with previous reports describing their role in hair cells 2426,31,61,62 , and expands on those findings by shedding light on their relative contribution to the support of those cells. Because neither the mir-183 lri70 , mir-96 lri60 , nor mir-182 lri61 mutants had compromised hair cells, we can also conclude that there is no absolute requirement for any one of the three miRNAs.…”
Section: Discussionsupporting
confidence: 93%
“…A previous study in the mouse inner ear has shown that progressive reduction of miR-183 expression after Pax2 -Cre conditional Dicer knockout (KO) results in progressive loss of neurosensory gene expression, arrested neurosensory development and loss of CVGs with an associated disruption of morphogenesis [ 4 ]. More recently, a Dicer1 conditional KO line ( Atoh1-cre;Dicer1 flox/flox and Foxg1-cre; Dicer1 flox/flox ) showed defects in proliferation in the prosensory domain of the cochlea including CVGs [ 7 , 8 , 58 ]. Our observations coupled with the findings in mice suggest that Dicer pathway interactions with the miR-183 family play an essential role in the regulation of early mice inner ear development.…”
Section: Discussion/conclusionmentioning
confidence: 99%
“…In the inner ear, RNA-sequencing experiments have led to the identification of hundreds of miRNAs ( 143 ). Global abolishment of miRNA expression in the mouse inner ear was achieved by conditional knockout of Dicer at different stages of development ( 47 , 73 , 154 , 166 ). All such mouse lines exhibit severe cochlear defects, such as thinner cochlear ducts or disorganized stereocilia bundles.…”
Section: The Noncoding Genome and The Inner Earmentioning
confidence: 99%