| HGNC Family | Non-coding RNAs |
| Name | microRNA 1-1 |
| Description | microRNAs (miRNAs) are short (20-24 nt) non-coding RNAs that are involved in post-transcriptional regulation of gene expression in multicellular organisms by affecting both the stability and translation of mRNAs. miRNAs are transcribed by RNA polymerase II as part of capped and polyadenylated primary transcripts (pri-miRNAs) that can be either protein-coding or non-coding. The primary transcript is cleaved by the Drosha ribonuclease III enzyme to produce an approximately 70-nt stem-loop precursor miRNA (pre-miRNA), which is further cleaved by the cytoplasmic Dicer ribonuclease to generate the mature miRNA and antisense miRNA star (miRNA*) products. The mature miRNA is incorporated into a RNA-induced silencing complex (RISC), which recognizes target mRNAs through imperfect base pairing with the miRNA and most commonly results in translational inhibition or destabilization of the target mRNA. The RefSeq represents the predicted microRNA stem-loop. [provided by RefSeq, Sep 2009] |
| Summary |
{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\nMIR1‐1 is a muscle‐ and heart‐specific microRNA that plays a pivotal role in cardiovascular physiology and pathology. In the failing heart, MIR1‐1, along with other cardiac microRNAs, contributes to the remodeling process and to the reactivation of fetal gene programs, while its circulating levels become altered in acute myocardial infarction and doxorubicin‐induced cardiotoxicity. Moreover, MIR1‐1 is induced during muscle cell differentiation and is modulated by key transcriptional co‐factors such as myocardin, with its altered abundance leading to slowed cardiac conduction, increased arrhythmogenic potential, and impairment of contractility. Its regulation is also intricately linked to post‐transcriptional editing mechanisms in conditions such as myotonic dystrophy, and its expression correlates with key electrophysiological regulators such as hyperpolarization‐activated cyclic nucleotide‐gated channels and fibrotic pathways."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "1", "end_ref": "11"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nIn the oncological arena, MIR1‐1 frequently exhibits reduced expression across a spectrum of human cancers – including prostate, lung, gallbladder, breast, nasopharyngeal, esophageal, colorectal, head and neck, chordoma, and osteosarcoma – where it functions as a potent tumor suppressor. Restoration of MIR1‐1 expression in these contexts impairs cell proliferation, migration, invasion, and disrupts cell cycle progression by directly targeting key oncogenic factors (such as MET, Slug, and CORO1C) and by dampening pathways like Wnt/β‐catenin signaling. In addition, MIR1‐1 is embedded in reciprocal regulatory networks with long non‐coding RNAs (for example, MALAT1 and UCA1), which reinforce its tumor‐suppressive functions and affect cellular epithelial–mesenchymal transition and stemness. Its consistent downregulation not only portends poor clinical outcomes and disease recurrence but also renders it a promising diagnostic biomarker and therapeutic target in diverse malignancies."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "12", "end_ref": "29"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nBeyond its roles in mature tissues, MIR1‐1 is intricately regulated during development and in response to therapeutic stimuli. Epigenetic alterations such as hypermethylation of its genomic cluster have been associated with diminished expression in colorectal and other cancers, while transcriptional and post‐transcriptional mechanisms further fine‐tune its abundance in diverse cellular contexts. In addition, MIR1‐1 has been shown to promote apoptosis – as observed in nasopharyngeal carcinoma models – and to enhance chemosensitivity in drug‐resistant non‐small cell lung cancer and osteosarcoma cells by modulating targets involved in autophagy and survival signaling. These findings, together with observations in gastric carcinogenesis, underscore the broad regulatory impact of MIR1‐1 on cellular homeostasis and highlight its potential as a molecular biomarker and therapeutic target."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "30", "end_ref": "36"}]}, {"type": "t", "text": "\n"}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Thomas Thum, Paolo Galuppo, Christian Wolf, et al. 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| Synonyms | HSA-MIR-1-1, MIRN1-1, MIR-1-1, MIRNA1-1 |
| NCBI Gene ID | 406904 |
| API | |
| Download Associations | |
| Predicted Functions |
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| Co-expressed Genes |
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| Expression in Tissues and Cell Lines |
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MIR1-1 has 593 functional associations with biological entities spanning 5 categories (molecular profile, functional term, phrase or reference, disease, phenotype or trait, cell line, cell type or tissue, gene, protein or microRNA) extracted from 15 datasets.
Click the + buttons to view associations for MIR1-1 from the datasets below.
If available, associations are ranked by standardized value
| Dataset | Summary | |
|---|---|---|
| CCLE Cell Line Gene CNV Profiles | cell lines with high or low copy number of MIR1-1 gene relative to other cell lines from the CCLE Cell Line Gene CNV Profiles dataset. | |
| COSMIC Cell Line Gene CNV Profiles | cell lines with high or low copy number of MIR1-1 gene relative to other cell lines from the COSMIC Cell Line Gene CNV Profiles dataset. | |
| ENCODE Histone Modification Site Profiles | histone modification site profiles with high histone modification abundance at MIR1-1 gene from the ENCODE Histone Modification Site Profiles dataset. | |
| ENCODE Transcription Factor Binding Site Profiles | transcription factor binding site profiles with transcription factor binding evidence at the promoter of MIR1-1 gene from the ENCODE Transcription Factor Binding Site Profiles dataset. | |
| ENCODE Transcription Factor Targets | transcription factors binding the promoter of MIR1-1 gene in ChIP-seq datasets from the ENCODE Transcription Factor Targets dataset. | |
| GeneRIF Biological Term Annotations | biological terms co-occuring with MIR1-1 gene in literature-supported statements describing functions of genes from the GeneRIF Biological Term Annotations dataset. | |
| GeneSigDB Published Gene Signatures | PubMedIDs of publications reporting gene signatures containing MIR1-1 from the GeneSigDB Published Gene Signatures dataset. | |
| GEO Signatures of Differentially Expressed Genes for Gene Perturbations | gene perturbations changing expression of MIR1-1 gene from the GEO Signatures of Differentially Expressed Genes for Gene Perturbations dataset. | |
| JASPAR Predicted Transcription Factor Targets | transcription factors regulating expression of MIR1-1 gene predicted using known transcription factor binding site motifs from the JASPAR Predicted Transcription Factor Targets dataset. | |
| Klijn et al., Nat. Biotechnol., 2015 Cell Line Gene CNV Profiles | cell lines with high or low copy number of MIR1-1 gene relative to other cell lines from the Klijn et al., Nat. Biotechnol., 2015 Cell Line Gene CNV Profiles dataset. | |
| KnockTF Gene Expression Profiles with Transcription Factor Perturbations | transcription factor perturbations changing expression of MIR1-1 gene from the KnockTF Gene Expression Profiles with Transcription Factor Perturbations dataset. | |
| MGI Mouse Phenotype Associations 2023 | phenotypes of transgenic mice caused by MIR1-1 gene mutations from the MGI Mouse Phenotype Associations 2023 dataset. | |
| MotifMap Predicted Transcription Factor Targets | transcription factors regulating expression of MIR1-1 gene predicted using known transcription factor binding site motifs from the MotifMap Predicted Transcription Factor Targets dataset. | |
| Roadmap Epigenomics Histone Modification Site Profiles | histone modification site profiles with high histone modification abundance at MIR1-1 gene from the Roadmap Epigenomics Histone Modification Site Profiles dataset. | |
| WikiPathways Pathways 2014 | pathways involving MIR1-1 protein from the Wikipathways Pathways 2014 dataset. | |