Mir30e

RNAcentral ID: URS0000759D99_10090
Organism: Mus musculus
Review Status: COMPLETE
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Gene Description

Mir30e encodes the mouse mir-30e precursor, a member of the miR-30 family. Its mature product is a guide RNA directing Argonaute/RISC to complementary sites in target mRNAs, which is the only well-established function of this gene. No specific downstream process has been established for mir-30e by functional perturbation; its current GOA process annotations all derive from surveys in which mir-30e was one of many miRNAs whose abundance changed.

Existing Annotations Review

GO Term Evidence Action Reason
GO:0016442 RISC complex
IEA
GO_REF:0000115
ACCEPT
Summary: Rfam2GO annotation placing the mature miRNA in RISC.
Reason: Mature miR-30e is loaded into Argonaute/RISC; this is core to how the gene product works.
GO:0035195 miRNA-mediated post-transcriptional gene silencing
IEA
GO_REF:0000115
ACCEPT
Summary: Rfam2GO annotation of the generic microRNA process.
Reason: Correct and, in the absence of any functionally established downstream process, the only core biological process for this gene.
GO:0009617 response to bacterium
IEP
PMID:24205035
Profiling circulating microRNA expression in experimental se...
MARK AS OVER ANNOTATED
Summary: Bulk microarray table entry from a circulating-biomarker survey whose own controls argue against a bacterium-sensing mechanism.
Reason: mir-30e is not one of the 10 miRNAs this paper carried forward to quantitative PCR validation; it appears only in the table of 45 miRNAs raised at 24 h. Even for the validated 10 the authors showed the increase persists in Tlr2, Tlr4 and NF-kB knockouts and concluded bacterial sensing was not the driver. So the observation behind this row is a change in the blood level of one miRNA among dozens, in a surgical sepsis model, with the bacterial mechanism explicitly excluded. One of 58 IEP rows to this term from this single paper.
Supporting Evidence:
PMID:24205035
At 24 h after injection, the levels of 45 miRNAs increased in the whole blood
PMID:24205035
which indicated that the transcription of these miRNAs was not directly mediated by the TLR2/NF-ΞΊB or TLR4/NF-ΞΊB pathway, and pathways induced by exposure to the gram-positive or gram-negative bacteria
GO:0071361 cellular response to ethanol
IEP
PMID:19091803
Ethanol exposure induces differential microRNA and target ge...
MARK AS OVER ANNOTATED
Summary: Expression change under ethanol exposure, with no evidence that mir-30e participates in the response.
Reason: The cited study is a differential expression survey of ethanol-exposed embryos. A transcript whose level moves under ethanol is not thereby a component of the cellular ethanol response; GO's own guidance reserves "response to" terms for products required for the response to occur. The cached record is abstract-only, so this is marked as over-annotated rather than removed - the expression observation itself is not in doubt, only the inference from it.
GO:0060291 long-term synaptic potentiation
IEP
PMID:25858512
miR-26a and miR-384-5p are required for LTP maintenance and ...
MARK AS OVER ANNOTATED
Summary: Genuinely differentially expressed during LTP, but never functionally tested; the paper itself calls such miRNAs candidates.
Reason: This is the informative middle tier of the 130-member IEP batch from this paper. Unlike most of the cohort, mir-30e really did change - it is named as one of the six downregulated miRNAs among the 12 that changed during LTP - so the IEP evidence code is used correctly and the observation is sound. What is not established is agency: the authors tested only miR-26a, miR-384-5p and let-7a, and describe the rest as a catalogue of candidate LTP miRNAs. "Acts upstream of or within long-term synaptic potentiation" promotes a candidate to a participant. Marked over-annotated rather than removed precisely because the underlying expression change is real.
Supporting Evidence:
PMID:25858512
two of the downregulated miRNAs (miR-384-5p and miR-30e) belong to the same miRNA family
PMID:25858512
presents a catalogue of candidate 'LTP miRNAs'
GO:0070482 response to oxygen levels
IDA
PMID:19188439
MicroRNA-1 negatively regulates expression of the hypertroph...
UNDECIDED
Summary: Cannot be adjudicated from the cached record.
Reason: The cached publication is abstract-only and concerns miR-1 regulating calmodulin and Mef2a, with no mention of miR-30 in the abstract. The curator will have read the full text, so this is left undecided pending full-text access rather than challenged.
GO:0071230 cellular response to amino acid stimulus
IDA
PMID:20548288
Difference in expression of hepatic microRNAs miR-29c, miR-3...
UNDECIDED
Summary: Cannot be adjudicated from the cached record.
Reason: The cached publication is abstract-only and its title concerns hepatic miR-29c, miR-34a, miR-155 and miR-200b in dietary NAFLD susceptibility, with no mention of miR-30. Left undecided pending full text.

Core Functions

miRNA guide activity directing Argonaute/RISC to complementary sites in target mRNAs. No molecular function term is asserted: unlike mir-26a and mir-384, no direct target or reporter assay has been published for mir-30e, so there is nothing to ground a specific binding activity.

Supporting Evidence:
  • GO_REF:0000115
    Automatic Gene Ontology annotation of non-coding RNA sequences through association of Rfam records with GO terms

References

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Suggested Questions for Experts

Q: Does mir-30e have any demonstrated function in long-term potentiation beyond being downregulated during it, given that its family member miR-384-5p is required?

Suggested experts: synaptic plasticity researchers, microRNA biologists

Q: Do the miR-30 family members act redundantly, such that single-miRNA perturbation would miss a real contribution?

Suggested experts: microRNA biologists

Suggested Experiments

Experiment: Antagomir or sponge inhibition of miR-30e in hippocampal slices, with LTP recording and spine imaging, matching the assays used for miR-26a and miR-384-5p

Hypothesis: miR-30e is dispensable for LTP maintenance despite being downregulated during LTP, distinguishing correlation from requirement

Type: electrophysiology

Experiment: Ago CLIP in hippocampal neurons to identify miR-30e-dependent target occupancy

Hypothesis: miR-30e has a distinct target set from miR-384-5p despite shared family membership

Type: high-throughput sequencing

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