Cited by 102Hearing, Cochlea, Tinnitus, GeneticsMicroRNA in disease regulationCongenital Ear and Nasal Anomalies

The DOI matches its Crossref record; 38 of the 39 references it cites were found in a registry or an index; 8 of the 18 sources its claims cite were checked for support.

A novel mutation within the MIR96 gene causes non-syndromic inherited hearing loss in an Italian family by altering pre-miRNA processing

Open access

Abstract

The miR-96, miR-182 and miR-183 microRNA (miRNA) family is essential for differentiation and function of the vertebrate inner ear. Recently, point mutations within the seed region of miR-96 were reported in two Spanish families with autosomal dominant non-syndromic sensorineural hearing loss (NSHL) and in a mouse model of NSHL. We screened 882 NSHL patients and 836 normal-hearing Italian controls and identified one putative novel mutation within the miR-96 gene in a family with autosomal dominant NSHL. Although located outside the mature miR-96 sequence, the detected variant replaces a highly conserved nucleotide within the companion miR-96*, and is predicted to reduce the stability of the pre-miRNA hairpin. To evaluate the effect of the detected mutation on miR-96/mir-96* biogenesis, we investigated the maturation of miR-96 by transient expression in mammalian cells, followed by real-time reverse-transcription polymerase chain reaction (PCR). We found that both miR-96 and miR-96* levels were significantly reduced in the mutant, whereas the precursor levels were unaffected. Moreover, miR-96 and miR-96* expression levels could be restored by a compensatory mutation that reconstitutes the secondary structure of the pre-miR-96 hairpin, demonstrating that the mutation hinders precursor processing, probably interfering with Dicer cleavage. Finally, even though the mature miR-96 sequence is not altered, we demonstrated that the identified mutation significantly impacts on miR-96 regulation of selected targets. In conclusion, we provide further evidence of the involvement of miR-96 mutations in human deafness and demonstrate that a quantitative defect of this miRNA may contribute to NSHL.

Overview

AI snapshot

Written from the paper’s full text.

TL;DR

A novel heterozygous MIR96 +57T>C mutation, located outside mature miR-96 but within the miR-96* seed region, was identified in an Italian family with autosomal dominant progressive non-syndromic hearing loss. Functional assays show the mutation alters pre-miR-96 folding, reduces mature miR-96 and miR-96* without affecting precursor levels, and impairs target regulation, suggesting a quantitative miR-96 defect can contribute to deafness.

Key findings

  • Screening 882 NSHL patients and 836 normal-hearing Italian controls identified miR-96(+57T>C) in one family with autosomal dominant progressive NSHL; the variant was absent in controls and segregated with hearing loss in affected individuals, though it was also present in three normal-hearing children.
  • In HeLa cells, the +57T>C mutant significantly reduced mature miR-96 by 85% (P = 0.0006) and miR-96* by 77% (P = 0.019), while pre-miR-96 levels were unaffected; a compensatory +23A>G mutation restored both mature miRNA levels to values not significantly different from wild-type.
  • The known miR-96(+13G>A) mutation reduced mature miR-96 (P < 0.0001) but did not affect miR-96* levels, and its effect was not rescued by restoring precursor folding, indicating a different pathogenic mechanism from +57T>C.
  • Luciferase assays showed 3 of 8 candidate 3′UTRs (MYRIP, ACVR2B, CACNB4) were regulated by miR-96/miR-96*; the +57T>C mutation reduced silencing by approximately 50%, and MYRIP regulation—dependent uniquely on miR-96—was restored by the double +23A>G+57T>C mutant.

Methods

  • Case–control mutational screening: 882 genetically undiagnosed Italian NSHL patients (30% familial, 70% sporadic) and 836 normal-hearing Italian controls; MIR183, MIR96, and MIR182 were prescreened by high-resolution melting followed by direct sequencing.
  • Functional studies: mfold was used to predict pre-miR-96 secondary structure; psiUX expression vectors carrying wild-type, mutant, or double-mutant pre-miR-96 were transiently transfected into HeLa cells, and mature miR-96, miR-96*, and pre-miR-96 levels were measured by real-time RT–PCR using the ΔΔCT method.
  • Target validation: eight candidate target 3′UTRs were cloned into psiCHECK2 and tested by luciferase reporter assays; miRNA expression profiles were also examined in human and mouse tissues, including mouse Organ of Corti.

Limitations

  • Stated: a direct role of miR-96* in NSHL pathogenesis remains unproved; none of the putative miR-96* target sites was validated by luciferase assays; more extensive and detailed experiments are needed to define any role of miR-96* in the inner ear.
  • Stated: the mutation was present in three normal-hearing children, which may reflect age-related onset or incomplete penetrance, so those individuals might still develop hearing loss.
  • Evident from the text: functional assays were performed in HeLa cells rather than inner ear hair cells, and the mutation was characterized in a single Italian family, limiting generalization and leaving the inner-ear-specific mechanism unresolved.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.1093/hmg/ddr493

Cites

38 of 38 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Figures

Figure 1. The novel pre-miR-96(+57T>C) mutation identified in an Italian family with autosomal dominant non-syndromic hearing loss. (A) Multiple alignment of pre-miR-96 sequences (annotated in miRBase) from different vertebrate species obtained using the CLUSTALW software. The nt position +57 within the human pre-miR-96 is indicated by an arrow. Mature miR-96 and miR-96* sequences are boxed, and their seed regions are underlined. hsa, Homo sapiens; ppa, Pan paniscus; ptr, Pan troglodytes; ggo, Gorilla gorilla; mml, Macaca mulatta; mne, Macaca nemestrina; sla, Saguinus labiatus; mdo, Monodelphis domestica; bta, Bos taurus; mmu, Mus musculus; rno, Rattus norvegicus; oan, Ornithorhynchus anatinus; fru, Fugu rubipres; tni, Tetraodon nigroviridis; dre, Danio rerio. (B) Pedigree of the Italian NSHL family carrying the miR-96(+57T>C) mutation. Black symbols indicate affected subjects. The numbers within the symbols represent: age of onset of NSHL (black symbols) and present age (empty symbols). Presence or absence of the mutation is indicated below the genetically analyzed subjects. (C) Electropherogram depicting the pre-miR-96 sequence surrounding the mutated nt. (D) Audiograms showing the progression of the hearing impairment in the proband (III-2). The age at which each audiometric record was obtained is indicated. Each graph point represents the average hearing loss for the right and left ears.
Figure 1. The novel pre-miR-96(+57T>C) mutation identified in an Italian family with autosomal dominant non-syndromic hearing loss. (A) Multiple alignment of pre-miR-96 sequences (annotated in miRBase) from different vertebrate species obtained using the CLUSTALW software. The nt position +57 within the human pre-miR-96 is indicated by an arrow. Mature miR-96 and miR-96* sequences are boxed, and their seed regions are underlined. hsa, Homo sapiens; ppa, Pan paniscus; ptr, Pan troglodytes; ggo, Gorilla gorilla; mml, Macaca mulatta; mne, Macaca nemestrina; sla, Saguinus labiatus; mdo, Monodelphis domestica; bta, Bos taurus; mmu, Mus musculus; rno, Rattus norvegicus; oan, Ornithorhynchus anatinus; fru, Fugu rubipres; tni, Tetraodon nigroviridis; dre, Danio rerio. (B) Pedigree of the Italian NSHL family carrying the miR-96(+57T>C) mutation. Black symbols indicate affected subjects. The numbers within the symbols represent: age of onset of NSHL (black symbols) and present age (empty symbols). Presence or absence of the mutation is indicated below the genetically analyzed subjects. (C) Electropherogram depicting the pre-miR-96 sequence surrounding the mutated nt. (D) Audiograms showing the progression of the hearing impairment in the proband (III-2). The age at which each audiometric record was obtained is indicated. Each graph point represents the average hearing loss for the right and left ears.CC BY-NC · PubMed Central
Figure 2. Different functional consequences of the miR-96(+57T>C) and the known miR-96(+13G>A) mutations on miR-96/miR-96* biogenesis. (A) Predicted secondary structures of wild-type, mutant (+57T>C and +13G>A) and double-mutant (+23A>G+57T>C and +13G>A+66C>T) miR-96 precursors obtained by using the mfold algorithm. The nt positions involved in the mutations are boxed. The double mutants were created to restore the pre-miR-96 secondary structure, in order to verify whether the defects in miRNA expression were dependent on correct folding of the hairpin precursor. Dicer cleavage sites are indicated by arrows. (B) The positions of the 5′ primers used for real-time RT–PCR to quantify the levels of mature miRNA and pre-miRNA species. Primer sequences are listed in Supplementary Material, Table S2. (C) The miR96(+57T>C) impairs the processing of pre-miR-96 to its mature forms, and is rescued by a compensatory mutation (+23A>G) restoring the correct hairpin folding. (D) The known miR96(+13G>A) impairs mature miR-96, but not miR-96* levels, independently from the correct folding of the miR-96 precursor. The effect of the analyzed mutants on pre-miR-96 processing was evaluated by quantitative real-time RT–PCR using the ▵▵CT method. Variations in the expression levels of mature miRNAs and pre-miR-96 in the miR-96(+57T>C) and miR-96(+23A>G+57T>C) (C), or the known miR-96(+13G>A) and miR-96(+13G>A+66C>T) (D) mutants were compared with the wild-type samples (set as 1). Bars stand for mean ± SEM (represented as percentage of variation) of six independent experiments, each performed in triplicate in different days on different cell batches and with different plasmid preparations. The results were analyzed by unpaired t-test (*P< 0.05; **P< 0.01; ***P< 0.001).
Figure 2. Different functional consequences of the miR-96(+57T>C) and the known miR-96(+13G>A) mutations on miR-96/miR-96* biogenesis. (A) Predicted secondary structures of wild-type, mutant (+57T>C and +13G>A) and double-mutant (+23A>G+57T>C and +13G>A+66C>T) miR-96 precursors obtained by using the mfold algorithm. The nt positions involved in the mutations are boxed. The double mutants were created to restore the pre-miR-96 secondary structure, in order to verify whether the defects in miRNA expression were dependent on correct folding of the hairpin precursor. Dicer cleavage sites are indicated by arrows. (B) The positions of the 5′ primers used for real-time RT–PCR to quantify the levels of mature miRNA and pre-miRNA species. Primer sequences are listed in Supplementary Material, Table S2. (C) The miR96(+57T>C) impairs the processing of pre-miR-96 to its mature forms, and is rescued by a compensatory mutation (+23A>G) restoring the correct hairpin folding. (D) The known miR96(+13G>A) impairs mature miR-96, but not miR-96* levels, independently from the correct folding of the miR-96 precursor. The effect of the analyzed mutants on pre-miR-96 processing was evaluated by quantitative real-time RT–PCR using the ▵▵CT method. Variations in the expression levels of mature miRNAs and pre-miR-96 in the miR-96(+57T>C) and miR-96(+23A>G+57T>C) (C), or the known miR-96(+13G>A) and miR-96(+13G>A+66C>T) (D) mutants were compared with the wild-type samples (set as 1). Bars stand for mean ± SEM (represented as percentage of variation) of six independent experiments, each performed in triplicate in different days on different cell batches and with different plasmid preparations. The results were analyzed by unpaired t-test (*P< 0.05; **P< 0.01; ***P< 0.001).CC BY-NC · PubMed Central
Figure 3. The miR96(+57T>C) mutation impairs the regulation of MYRIP by reducing mature miR-96 levels. (A) Downregulation of MYRIP 3′UTR is only dependent on miR-96, and is impaired in the miR96(+57T>C) mutant. The MYRIP 3′UTR reporter vectors (wild-type, or Δ96 and Δ96* mutants) were cotransfected with plasmids expressing either the wild-type or the +57T>C mutant pre-miR-96. Mock samples were transfected with the empty psiCHECK2 and psiUX vectors. (B) Restoration of correct pre-miR-96 folding rescues the regulation of MYRIP 3′UTR. The wild-type MYRIP 3′UTR reporter vector was cotransfected with the wild-type, the +57T>C or the double-mutant (+23A>G+57T>C) pre-miR-96 expression constructs. Relative luciferase activity is expressed as mean ± SEM of six independent experiments, each performed in triplicate in different days on different cell batches and with different plasmid preparations. The luciferase activity of the empty psiCHECK2 plasmid (A) or of the corresponding psiCHECK2-3′UTR plasmid (B) is set as 1. The results were analyzed by unpaired t-test (*P< 0.05; **P< 0.01; ***P< 0.001).
Figure 3. The miR96(+57T>C) mutation impairs the regulation of MYRIP by reducing mature miR-96 levels. (A) Downregulation of MYRIP 3′UTR is only dependent on miR-96, and is impaired in the miR96(+57T>C) mutant. The MYRIP 3′UTR reporter vectors (wild-type, or Δ96 and Δ96* mutants) were cotransfected with plasmids expressing either the wild-type or the +57T>C mutant pre-miR-96. Mock samples were transfected with the empty psiCHECK2 and psiUX vectors. (B) Restoration of correct pre-miR-96 folding rescues the regulation of MYRIP 3′UTR. The wild-type MYRIP 3′UTR reporter vector was cotransfected with the wild-type, the +57T>C or the double-mutant (+23A>G+57T>C) pre-miR-96 expression constructs. Relative luciferase activity is expressed as mean ± SEM of six independent experiments, each performed in triplicate in different days on different cell batches and with different plasmid preparations. The luciferase activity of the empty psiCHECK2 plasmid (A) or of the corresponding psiCHECK2-3′UTR plasmid (B) is set as 1. The results were analyzed by unpaired t-test (*P< 0.05; **P< 0.01; ***P< 0.001).CC BY-NC · PubMed Central

Verification

Claims the paper makes

27 Own result · 22 Own interpretation · 9 Own method · 4 Partly supported · 4 No basis given · 3 Not checked yet · 1 Supported so far · 1 Couldn’t confirm · 1 No full text of the sources · accuracy not yet measured

Verify all 6 references — free account

Show all 31 claims

  • Probably not a substantial claim. 18
  • It may state two separate claims as one. 33
41 of 41
  • The paper relies on this without support.

    The processing of miR-96 in HeLa cells reflects the processing in the human inner ear relevant to hearing loss.

    “To this aim, expression vectors (psiUX) containing genomic DNA fragments spanning both miR-183 and miR-96 precursors, and corresponding to either the miR-96 wild-type or the miR-96(+57T>C) sequences, were generated and used to transiently transfect HeLa cells.”
  • The paper relies on this without support.

    The mfold-predicted secondary structure of pre-miR-96 reflects the actual RNA secondary structure.

    “we used the mfold program (19) to examine how the newly identified nt variation could alter the predicted RNA secondary structure of pre-miR-96.”
  • The paper relies on this without support.

    The luciferase reporter assays reflect endogenous regulation of miR-96 targets.

    “we co-transfected a vector expressing either the wild-type or the mutant pre-miR-96 hairpin into HeLa cells, together with a construct containing the luciferase reporter cDNA coupled to the 3′UTR of each target gene (psiCHECK2-3′UTR).”
  • The paper relies on this without support.

    The presence of the miR-96(+57T>C) variant in three normal-hearing children is due to incomplete penetrance or age-related onset of hearing loss.

    “this may be due either to the age-relatedness of hearing loss in the family (all non-penetrants are below the average age of onset of the disease among affected relatives) or to incomplete penetrance.”
4 of 4

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

Each contradiction between two passages listed here was confirmed by an independent check.

2 of 2

Citations

Cites

Show all 39 references

Cited by

Sorted by citations

Items 101–102 of 102

Metadata

Authors
Soldà, G., Robusto, M., Primignani, P., Castorina, P., Benzoni, E., Cesarani, A., Ambrosetti, U., Asselta, R., & Duga, S.
Affiliations
  • University of Milan (IT)
  • Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico (IT)
Corresponding author
Soldà, Giulia
Venue
Human Molecular Genetics
Published
2011-10-28
Volume
21
Issue
3
Pages
577-585
ISSN
  • 0964-6906 (ISSN-L)
  • 1460-2083
OpenAlex
W2109723356
Cited by
102
References
39
Citations by year
2026: 1 · 2025: 5 · 2024: 10 · 2023: 6 · 2022: 6 · 2021: 2 · 2020: 6 · 2019: 9 · 2018: 7 · 2017: 9 · 2016: 5 · 2015: 13 · 2014: 7 · 2013: 13 · 2012: 3
FWCI
3.61
Type
journal article
Language
en
Open access
Licence
cc-by-nc
Locations
  • Human Molecular Genetics (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (submittedVersion, cc-by-nc)
  • PubMed Central (submittedVersion, cc-by-nc)
Topics
  • Life Sciences › Neuroscience › Sensory Systems › Hearing, Cochlea, Tinnitus, Genetics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › MicroRNA in disease regulation
  • Health Sciences › Medicine › Genetics (clinical) › Congenital Ear and Nasal Anomalies
Keywords
miR-96, non-syndromic sensorineural hearing loss, pre-miRNA processing, compensatory mutations, microRNA biogenesis, inner ear development, Italian families
MeSH terms
Gene Expression Regulation, Hearing Loss, Sensorineural, HeLa Cells, Humans, Italy, Mutation, Nucleic Acid Conformation, RNA Precursors, RNA Processing, Post-Transcriptional, MicroRNAs

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

A language model drew the claims from the paper on 2026-10-20, under version 3 of the claim definition (model deepseek-v4.1-flash, prompt extract-v3).

A second model labelled each claim on 2026-10-20 (model jev-1.13-20260917, definition revision gold-guideline-v0.2).

Cited sources are checked with a language model’s help (gpt-6-sol).

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review