MIR103A1 Gene

HGNC Family Non-coding RNAs
Name microRNA 103a-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": "\nMicroRNA‐103 (including its isoform miR‑103a‑3p, commonly known as MIR103A1) is emerging as a multifunctional regulator in cancer. In several tumor types—including colorectal cancer, gastric cancer, prostate cancer, bladder cancer, hepatocellular carcinoma, triple‐negative breast cancer, glioma, and non‑small cell lung cancer—it can be overexpressed or underexpressed, thereby influencing tumor proliferation, metastasis, and stemness. For example, miR‑103 promotes colorectal cancer cell proliferation and migration by targeting the tumor suppressors DICER and PTEN, and in gastric cancer, its high expression correlates with poor survival via suppression of KLF4. In bladder cancer, a circular RNA acts as a “sponge” to sequester miR‑103a‑3p, modulating CDK6‐mediated proliferation. Moreover, in hepatocellular carcinoma and other solid tumors, miR‑103 has been implicated in promoting epithelial–mesenchymal transition through targeting key regulators such as LATS2, while in leukemia its induction sensitizes cells to glucocorticoid‑induced apoptosis through complex downstream effects. These studies underscore the dualistic oncogenic and tumor‐suppressive roles of MIR103A1 depending on the cellular context."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "1", "end_ref": "16"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nBeyond its role in oncogenesis, MIR103A1 is intimately involved in the regulation of metabolic, cardiovascular, inflammatory, and neurological processes. Aberrant miR‑103 expression has been linked to metabolic disorders such as insulin resistance, type 2 diabetes, and polycystic ovary syndrome, while altered circulating levels associate with Alzheimer’s disease and autism spectrum disorder. In vascular and cardiac contexts, miR‑103a‑3p modulates endothelial function and inflammatory responses—for instance, by repressing SNRK in glomerular endothelial cells to promote AngII‑induced renal inflammation, and by affecting BNIP3‐mediated autophagic flux under oxidative stress thereby influencing pyroptosis in endothelial cells. In addition, its capacity to dampen inflammatory signaling (for example, through targeting TBL1XR1) and to regulate chemokine expression (via CXCL12 in thrombosis) highlights a significant role in immune regulation and even in limiting HIV‑1 entry through downregulation of the CCR5 coreceptor."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "17", "end_ref": "30"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nMIR103A1 also contributes to the fine‐tuning of basic cellular processes including cell cycle control, autophagy, and the maintenance of stem cell attributes. In epithelial stem cell niches, the miR‑103/107 family regulates quiescence and proliferation by targeting kinases such as p90RSK2, while also coordinating end‐stage autophagy to prevent aberrant macropinocytosis. In cancer, these molecules promote stem‑like features and a sustained activation of pathways such as Wnt/β‑catenin by targeting negative regulators like Axin2. Altogether, these findings reveal a broad functional spectrum for MIR103A1—from modulating cell–cell communication and metabolic homeostasis to impacting the progression and therapy response of diverse diseases."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "31", "end_ref": "34"}]}, {"type": "t", "text": "\n"}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Li Geng, Bing Sun, Bo Gao, et al. 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Synonyms MIR103-1, MIR-103A-1, MIRN103-1
NCBI Gene ID 406895
API
Download Associations
Predicted Functions View MIR103A1's ARCHS4 Predicted Functions.
Co-expressed Genes View MIR103A1's ARCHS4 Predicted Functions.
Expression in Tissues and Cell Lines View MIR103A1's ARCHS4 Predicted Functions.

Functional Associations

MIR103A1 has 380 functional associations with biological entities spanning 6 categories (molecular profile, disease, phenotype or trait, functional term, phrase or reference, chemical, cell line, cell type or tissue, gene, protein or microRNA) extracted from 16 datasets.

Click the + buttons to view associations for MIR103A1 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 MIR103A1 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 MIR103A1 gene from the CHEA Transcription Factor Binding Site Profiles dataset.
ChEA Transcription Factor Targets transcription factors binding the promoter of MIR103A1 gene in low- or high-throughput transcription factor functional studies from the CHEA Transcription Factor Targets dataset.
CTD Gene-Disease Associations diseases associated with MIR103A1 gene/protein from the curated CTD Gene-Disease Associations dataset.
ENCODE Histone Modification Site Profiles histone modification site profiles with high histone modification abundance at MIR103A1 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 MIR103A1 gene from the ENCODE Transcription Factor Binding Site Profiles dataset.
ENCODE Transcription Factor Targets transcription factors binding the promoter of MIR103A1 gene in ChIP-seq datasets from the ENCODE Transcription Factor Targets dataset.
ESCAPE Omics Signatures of Genes and Proteins for Stem Cells PubMedIDs of publications reporting gene signatures containing MIR103A1 from the ESCAPE Omics Signatures of Genes and Proteins for Stem Cells dataset.
GeneRIF Biological Term Annotations biological terms co-occuring with MIR103A1 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 MIR103A1 from the GeneSigDB Published Gene Signatures dataset.
GEO Signatures of Differentially Expressed Genes for Small Molecules small molecule perturbations changing expression of MIR103A1 gene from the GEO Signatures of Differentially Expressed Genes for Small Molecules dataset.
JASPAR Predicted Transcription Factor Targets transcription factors regulating expression of MIR103A1 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 MIR103A1 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 MIR103A1 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 MIR103A1 gene from the Roadmap Epigenomics Histone Modification Site Profiles dataset.
WikiPathways Pathways 2014 pathways involving MIR103A1 protein from the Wikipathways Pathways 2014 dataset.