miRBase entry: bta-mir-20a

Stem-loop bta-mir-20a


Accession
MI0004741
Description
Bos taurus bta-mir-20a precursor miRNA mir-17
Gene
family?
RF00051; mir-17

Summary
Caution, this is an AI generated summary based on literature. This may have errors. ?

bta-mir-20a is a microRNA (miRNA) that has been identified as a master regulator and is upregulated in certain bovine conditions [PMC9445238]. It has been characterized as differentially expressed (DE) with a fold change (FC) less than 2.0 [PMC5736867]. Due to its stable expression, bta-mir-20a is used as an endogenous control in quantitative real-time PCR (qRT-PCR) assays, alongside other miRNAs like bta-miR-181a, bta-miR-30b-5p, and bta-miR-378 [PMC6691986]. It has been validated as a regulator of the PTEN gene in bovine granulosa cells and is associated with the PI3K-Akt signaling pathway's activity in follicular cells (FCs), influencing oocyte quality [PMC5602670]. The expression of bta-mir-20a was found to be significantly higher in FCs from follicles that led to oocyte cleavage, indicating its potential role in oocyte developmental potential [PMC5602670]. Despite its stable expression across different fertility conditions, it was differentially expressed in milk and plasma during early pregnancy in cattle [PMC6418173], but it did not follow the same expression trend as other miRNAs within its cluster during early pregnancy stages [PMC5325256].

Literature search
22 open access papers mention bta-mir-20a
(93 sentences)

Sequence

6484 reads, 99 reads per million, 70 experiments
guagcacUAAAGUGCUUAUAGUGCAGGUAGuguuuaguuaucuacugcauuaugagcacuuaaaguacugc
((((.(((.(((((((((((((((((.(((...........))))))))))))))))))))..))).))))

Structure
    c   -A                 G   uguu 
guag acU  AAGUGCUUAUAGUGCAG UAG    u
|||| |||  ||||||||||||||||| |||    a
cguc uga  uucacgaguauuacguc auc    g
    a   aa                 -   uauu 


Annotation confidence High
Do you think this miRNA is real?

Genome context
chr12: 66421687-66421757 [+]
Clustered miRNAs
5 other miRNAs are < 10 kb from bta-mir-20a
Name Accession Chromosome Start End Strand Confidence




Database links

Mature bta-miR-20a

Accession MIMAT0003527
Description Bos taurus bta-miR-20a mature miRNA
Sequence 8 - UAAAGUGCUUAUAGUGCAGGUAG - 30
Evidence experimental
cloned [1]

References

  1. PubMed ID: 17105755
    Discovery and profiling of bovine microRNAs from immune-related and embryonic tissues
    "Coutinho LL, Matukumalli LK, Sonstegard TS, Van Tassell CP, Gasbarre LC, Capuco AV, Smith TP"
    "Physiol Genomics (2007) 29:35-43