| HGNC Family | Non-coding RNAs |
| Name | microRNA 7-3 |
| 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": "\nMicroRNA‑7 (miR‑7) has emerged as a pivotal regulatory molecule in normal development and homeostasis. In the developing human pancreas, miR‑7 is highly expressed in endocrine cells during fetal and adult stages and is suggested to contribute to proper islet cell differentiation and function, with further potential to guide the efficient derivation of insulin‐producing cells from pluripotent stem cells. In addition, tissue‐specific roles in wound repair and metabolic balance underscore its broader function in normal physiology and cellular stress responses."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "1", "end_ref": "4"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nIn diverse cancer types, miR‑7 predominantly acts as a context‑dependent tumor suppressor by targeting multiple oncogenic pathways. In breast cancer, for example, miR‑7‑5p directly downregulates key regulators such as the proteasome activator REGγ and modulates EGFR‐mediated signaling, thereby impairing proliferation and survival. In glioblastoma cells, enforced miR‑7 expression inhibits both the PI3K/Akt and Raf/MEK/ERK pathways via direct targeting of PI3K and Raf‑1, while in pancreatic cancer, upregulation of miR‑7 (either by natural compounds like curcumin or via therapeutic delivery) suppresses cell growth and metastatic behavior through downregulation of targets including SET8 and by interfering with autophagy‐derived glycolysis. Similar tumor‐suppressive effects have been observed in prostate cancer (via inhibition of the stemness factor KLF4), melanoma (by targeting IRS‑2), renal cell carcinoma, gastric cancer (through its inverse relationship with EGFR expression), and even in lung cancers where miR‑7 modulates chemoresistance and radiosensitivity. Furthermore, exosomal transfer of miR‑7 from tumor‑associated macrophages to ovarian cancer cells limits metastatic potential, and studies have revealed its sequestration by oncogenic circular RNAs as a mechanism to subvert its function."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "5", "end_ref": "25"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nBeyond its oncologic implications, miR‑7 also exerts crucial roles in modulating cellular stress responses, neuroprotection, and differentiation. In dopaminergic neuronal models, miR‑7 enhances glycolytic flux and increases ATP production, thereby protecting cells from mitochondrial toxins—a process mediated via repression of factors such as RelA and subsequent upregulation of glucose transporters. In osteoblasts, miR‑7 modulation affects EGFR/Akt signaling to counteract glucocorticoid‑induced cell death, while in alveolar epithelial cells it influences sodium channel expression. Moreover, its capacity to drive neural differentiation has been leveraged in both two‑dimensional and three‑dimensional stem cell culture systems, offering promising avenues for regenerative medicine in conditions such as spinal cord injury. Emerging genetic and epigenetic studies further highlight miR‑7’s potential as a noninvasive biomarker and therapeutic target across a spectrum of diseases—ranging from subtle alterations in cancer predisposition (via variants in its binding sites) to diagnostic applications in osteosarcoma and beyond."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "26", "end_ref": "38"}]}, {"type": "t", "text": "\n"}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Mayrin Correa-Medina, Valia Bravo-Egana, Samuel Rosero, et al. 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| Synonyms | MIR-7-3, MIRN7-3, HSA-MIR-7-3 |
| NCBI Gene ID | 407045 |
| 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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MIR7-3 has 811 functional associations with biological entities spanning 4 categories (molecular profile, functional term, phrase or reference, cell line, cell type or tissue, gene, protein or microRNA) extracted from 11 datasets.
Click the + buttons to view associations for MIR7-3 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 MIR7-3 gene relative to other cell lines from the CCLE Cell Line Gene CNV Profiles dataset. | |
| ENCODE Histone Modification Site Profiles | histone modification site profiles with high histone modification abundance at MIR7-3 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 MIR7-3 gene from the ENCODE Transcription Factor Binding Site Profiles dataset. | |
| ENCODE Transcription Factor Targets | transcription factors binding the promoter of MIR7-3 gene in ChIP-seq datasets from the ENCODE Transcription Factor Targets dataset. | |
| GeneRIF Biological Term Annotations | biological terms co-occuring with MIR7-3 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 MIR7-3 from the GeneSigDB Published Gene Signatures dataset. | |
| GEO Signatures of Differentially Expressed Genes for Gene Perturbations | gene perturbations changing expression of MIR7-3 gene from the GEO Signatures of Differentially Expressed Genes for Gene Perturbations dataset. | |
| Klijn et al., Nat. Biotechnol., 2015 Cell Line Gene CNV Profiles | cell lines with high or low copy number of MIR7-3 gene relative to other cell lines from the Klijn et al., Nat. Biotechnol., 2015 Cell Line Gene CNV Profiles dataset. | |
| MotifMap Predicted Transcription Factor Targets | transcription factors regulating expression of MIR7-3 gene predicted using known transcription factor binding site motifs from the MotifMap Predicted Transcription Factor Targets dataset. | |
| Roadmap Epigenomics Cell and Tissue DNA Methylation Profiles | cell types and tissues with high or low DNA methylation of MIR7-3 gene relative to other cell types and tissues from the Roadmap Epigenomics Cell and Tissue DNA Methylation Profiles dataset. | |
| Roadmap Epigenomics Histone Modification Site Profiles | histone modification site profiles with high histone modification abundance at MIR7-3 gene from the Roadmap Epigenomics Histone Modification Site Profiles dataset. | |