The Plant microRNA Pathway: The Production and Action Stages

Author(s):  
Joseph L. Pegler ◽  
Christopher P. L. Grof ◽  
Andrew L. Eamens
2018 ◽  
Vol 69 (4) ◽  
pp. 709-719.e5 ◽  
Author(s):  
Nicolas G. Bologna ◽  
Raphael Iselin ◽  
Luciano A. Abriata ◽  
Alexis Sarazin ◽  
Nathan Pumplin ◽  
...  

2016 ◽  
Vol 36 (5) ◽  
pp. 2715-2722 ◽  
Author(s):  
Chaoxia Zou ◽  
Chendan Zou ◽  
Wanpeng Cheng ◽  
Qiang Li ◽  
Zhongjing Han ◽  
...  

2018 ◽  
Vol 9 (1) ◽  
Author(s):  
Ji-Hye Ahn ◽  
Hyun-Sung Lee ◽  
Ju-Seog Lee ◽  
Yeon-Su Lee ◽  
Jong-Lyul Park ◽  
...  

RNA Biology ◽  
2009 ◽  
Vol 6 (2) ◽  
pp. 175-178 ◽  
Author(s):  
Anne Cheever ◽  
Stephanie Ceman

2007 ◽  
Vol 7 ◽  
pp. 146-154 ◽  
Author(s):  
Abrar Qurashi ◽  
Shuang Chang ◽  
Peng Jin

Deficits in cognitive functions lead to mental retardation (MR). Understanding the genetic basis of inherited MR has provided insights into the pathogenesis of MR. Fragile X syndrome is one of the most common forms of inherited MR, caused by the loss of functional Fragile X Mental Retardation Protein (FMRP).MicroRNAs (miRNAs) are endogenous, single-stranded RNAs between 18 and 25 nucleotides in length, which have been implicated in diversified biological pathways. Recent studies have linked the miRNA pathway to fragile X syndrome. Here we review the role of the miRNA pathway in fragile X syndrome and discuss its implication in MR in general.


2020 ◽  
Vol 48 (14) ◽  
pp. 8050-8062
Author(s):  
Shubhangini Kataruka ◽  
Martin Modrak ◽  
Veronika Kinterova ◽  
Radek Malik ◽  
Daniela M Zeitler ◽  
...  

Abstract MicroRNAs (miRNAs) are ubiquitous small RNAs guiding post-transcriptional gene repression in countless biological processes. However, the miRNA pathway in mouse oocytes appears inactive and dispensable for development. We propose that marginalization of the miRNA pathway activity stems from the constraints and adaptations of RNA metabolism elicited by the diluting effects of oocyte growth. We report that miRNAs do not accumulate like mRNAs during the oocyte growth because miRNA turnover has not adapted to it. The most abundant miRNAs total tens of thousands of molecules in growing (∅ 40 μm) and fully grown (∅ 80 μm) oocytes, a number similar to that observed in much smaller fibroblasts. The lack of miRNA accumulation results in a 100-fold lower miRNA concentration in fully grown oocytes than in somatic cells. This brings a knock-down-like effect, where diluted miRNAs engage targets but are not abundant enough for significant repression. Low-miRNA concentrations were observed in rat, hamster, porcine and bovine oocytes, arguing that miRNA inactivity is not mouse-specific but a common mammalian oocyte feature. Injection of 250,000 miRNA molecules was sufficient to restore reporter repression in mouse and porcine oocytes, suggesting that miRNA inactivity comes from low-miRNA abundance and not from some suppressor of the pathway.


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