| HGNC Family | Non-coding RNAs |
| Name | microRNA 668 |
| 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": "\nStudies in renal ischemia have shown that miR-668 is upregulated in response to hypoxic stress via HIF‐1 activation. In ischemic acute kidney injury, miR-668 acts protectively by inhibiting mitochondrial fragmentation and apoptosis through the direct downregulation of MTP18, thereby preserving mitochondrial dynamics and promoting renal tubular cell survival."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nWhile investigations into breast cancer radioresistance have advanced our understanding of treatment failure, this particular study did not directly elucidate a role for miR-668 in the underlying resistance mechanisms."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "2"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nAdditional evidence from colorectal cancer research indicates that miR-668-3p is functionally integrated into a competing endogenous RNA network. Here, low levels of circTMEM59 result in increased availability of miR-668-3p, which suppresses inhibitor of DNA binding 4 (ID4) expression, thereby contributing to tumor progression. In a related metabolic context, genetic variants in the WFS1 gene that affect miR-668 binding have been linked to obesity traits and type 2 diabetes risk, highlighting a broader regulatory role for miR-668 in metabolic homeostasis."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "3"}]}, {"type": "t", "text": "\n"}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Qingqing Wei, Haipeng Sun, Shuwei Song, et al. "}, {"type": "b", "children": [{"type": "t", "text": "MicroRNA-668 represses MTP18 to preserve mitochondrial dynamics in ischemic acute kidney injury."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "J Clin Invest (2018)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1172/JCI121859"}], "href": "https://doi.org/10.1172/JCI121859"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "30325740"}], "href": "https://pubmed.ncbi.nlm.nih.gov/30325740"}]}, {"type": "r", "ref": 2, "children": [{"type": "t", "text": "Ming Luo, Ling Ding, Qingjian Li, et al. "}, {"type": "b", "children": [{"type": "t", "text": "miR-668 enhances the radioresistance of human breast cancer cell by targeting IκBα."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Breast Cancer (2017)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1007/s12282-017-0756-1"}], "href": "https://doi.org/10.1007/s12282-017-0756-1"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "28138801"}], "href": "https://pubmed.ncbi.nlm.nih.gov/28138801"}]}, {"type": "r", "ref": 3, "children": [{"type": "t", "text": "Yifei Feng, Xiaoyuan Wang, Changzhi Huang, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Upregulated circTMEM59 Inhibits Cell Growth and Metastasis by miR-668-3p/ID4 Axis in Colorectal Cancer."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Oxid Med Cell Longev (2022)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1155/2022/7242124"}], "href": "https://doi.org/10.1155/2022/7242124"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "35656024"}], "href": "https://pubmed.ncbi.nlm.nih.gov/35656024"}]}, {"type": "r", "ref": 4, "children": [{"type": "t", "text": "Maha M Hammad, Mohamed Abu-Farha, Prashantha Hebbar, et al. "}, {"type": "b", "children": [{"type": "t", "text": "The miR-668 binding site variant rs1046322 on "}, {"type": "a", "children": [{"type": "t", "text": "i"}], "href": "i"}, {"type": "t", "text": "WFS1"}, {"type": "a", "children": [{"type": "t", "text": "/i"}], "href": "/i"}, {"type": "t", "text": " is associated with obesity in Southeast Asians."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Front Endocrinol (Lausanne) (2023)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.3389/fendo.2023.1185956"}], "href": "https://doi.org/10.3389/fendo.2023.1185956"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "37859980"}], "href": "https://pubmed.ncbi.nlm.nih.gov/37859980"}]}]}]}
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| Synonyms | HSA-MIR-668, MIRN668 |
| NCBI Gene ID | 768214 |
| 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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MIR668 has 279 functional associations with biological entities spanning 5 categories (molecular profile, functional term, phrase or reference, chemical, cell line, cell type or tissue, gene, protein or microRNA) extracted from 13 datasets.
Click the + buttons to view associations for MIR668 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 MIR668 gene relative to other cell lines from the CCLE Cell Line Gene CNV Profiles dataset. | |
| ChEA Transcription Factor Binding Site Profiles | transcription factor binding site profiles with transcription factor binding evidence at the promoter of MIR668 gene from the CHEA Transcription Factor Binding Site Profiles dataset. | |
| ChEA Transcription Factor Targets | transcription factors binding the promoter of MIR668 gene in low- or high-throughput transcription factor functional studies from the CHEA Transcription Factor Targets dataset. | |
| COSMIC Cell Line Gene CNV Profiles | cell lines with high or low copy number of MIR668 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 MIR668 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 MIR668 gene from the ENCODE Transcription Factor Binding Site Profiles dataset. | |
| ENCODE Transcription Factor Targets | transcription factors binding the promoter of MIR668 gene in ChIP-seq datasets from the ENCODE Transcription Factor Targets dataset. | |
| GeneSigDB Published Gene Signatures | PubMedIDs of publications reporting gene signatures containing MIR668 from the GeneSigDB Published Gene Signatures dataset. | |
| GEO Signatures of Differentially Expressed Genes for Small Molecules | small molecule perturbations changing expression of MIR668 gene from the GEO Signatures of Differentially Expressed Genes for Small Molecules dataset. | |
| JASPAR Predicted Transcription Factor Targets | transcription factors regulating expression of MIR668 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 MIR668 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 MIR668 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 MIR668 gene from the Roadmap Epigenomics Histone Modification Site Profiles dataset. | |