MIR125B1 Gene

HGNC Family Non-coding RNAs
Name microRNA 125b-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
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Conversely, in some solid tumors its downregulation leads to de‐repression of targets such as ETS1, E2F3, BCL3, KIAA1522, and SUV39H1 that otherwise drive aggressive growth, epithelial–mesenchymal transition, and invasion."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "1", "end_ref": "24"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nIn the setting of hematopoiesis and stem cell biology, miR‐125b plays a key role in maintaining stem cell properties and influencing differentiation. It is highly expressed in hematopoietic stem cells where it supports survival and skews lineage decisions toward lymphoid‐bias, while its modulation in B‐cell precursors regulates the timely expression of transcription factors that drive differentiation. In addition, alterations in miR‐125b levels have been linked to abnormal lineage commitment in pediatric leukemias and age‐associated declines in B lymphopoiesis."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "25", "end_ref": "30"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nWithin the nervous system, miR‐125b has been implicated in neurodegenerative processes and neural differentiation. Its overexpression in primary neurons induces tau hyperphosphorylation by perturbing kinase/phosphatase balance—a mechanism relevant to Alzheimer’s disease—and miR‐125b is enriched in exosomes released by neuronal progenitors that promote differentiation. These findings underscore the dual role of miR‐125b in both neural pathology and development."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "31", "end_ref": "34"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nMiR‐125b also governs key inflammatory and immune responses. In psoriatic skin lesions, reduced miR‐125b in keratinocytes is associated with hyperproliferation and aberrant differentiation, while in macrophages its increased expression leads to destabilization of TNF mRNA, contributing to pathogen immune evasion. Moreover, in chondrocytes and rheumatoid arthritis, miR‐125b modulates inflammatory signaling cascades by targeting mediators like TRAF6, and its circulating levels may serve as predictive biomarkers of therapeutic response in chronic inflammatory conditions."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "35", "end_ref": "40"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nBeyond these core functions, miR‐125b is integrated within complex regulatory networks that influence cancer progression and metastasis through cross‐talk with other noncoding RNAs and signaling cascades. It is modulated by oxidative stress via promoter methylation, participates in feedback loops with receptors such as CXCR4 and transcription factors including STAT3, and its deregulated expression contributes to altered angiogenesis, epithelial–mesenchymal transition, and metabolic reprogramming in an array of tumors including melanoma, head and neck, and chronic lymphocytic leukemia. Such diverse functions illustrate miR‐125b’s role as a central “rheostat” fine‐tuning multiple oncogenic, developmental and inflammatory pathways."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "41", "end_ref": "46"}]}, {"type": "t", "text": "\n"}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Ming Zhou, Zixing Liu, Yuhua Zhao, et al. 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Synonyms MIRN125B1, MIR-125B-1
NCBI Gene ID 406911
API
Download Associations
Predicted Functions View MIR125B1's ARCHS4 Predicted Functions.
Co-expressed Genes View MIR125B1's ARCHS4 Predicted Functions.
Expression in Tissues and Cell Lines View MIR125B1's ARCHS4 Predicted Functions.

Functional Associations

MIR125B1 has 976 functional associations with biological entities spanning 5 categories (molecular profile, disease, phenotype or trait, functional term, phrase or reference, cell line, cell type or tissue, gene, protein or microRNA) extracted from 18 datasets.

Click the + buttons to view associations for MIR125B1 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 MIR125B1 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 MIR125B1 gene from the CHEA Transcription Factor Binding Site Profiles dataset.
ChEA Transcription Factor Targets transcription factors binding the promoter of MIR125B1 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 MIR125B1 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 MIR125B1 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 MIR125B1 gene from the ENCODE Transcription Factor Binding Site Profiles dataset.
ENCODE Transcription Factor Targets transcription factors binding the promoter of MIR125B1 gene in ChIP-seq datasets from the ENCODE Transcription Factor Targets dataset.
GAD Gene-Disease Associations diseases associated with MIR125B1 gene in GWAS and other genetic association datasets from the GAD Gene-Disease Associations dataset.
GeneRIF Biological Term Annotations biological terms co-occuring with MIR125B1 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 MIR125B1 from the GeneSigDB Published Gene Signatures dataset.
GEO Signatures of Differentially Expressed Genes for Gene Perturbations gene perturbations changing expression of MIR125B1 gene from the GEO Signatures of Differentially Expressed Genes for Gene Perturbations dataset.
GEO Signatures of Differentially Expressed Genes for Kinase Perturbations kinase perturbations changing expression of MIR125B1 gene from the GEO Signatures of Differentially Expressed Genes for Kinase Perturbations dataset.
HuGE Navigator Gene-Phenotype Associations phenotypes associated with MIR125B1 gene by text-mining GWAS publications from the HuGE Navigator Gene-Phenotype Associations dataset.
Klijn et al., Nat. Biotechnol., 2015 Cell Line Gene CNV Profiles cell lines with high or low copy number of MIR125B1 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 MIR125B1 gene from the KnockTF Gene Expression Profiles with Transcription Factor Perturbations dataset.
MotifMap Predicted Transcription Factor Targets transcription factors regulating expression of MIR125B1 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 MIR125B1 gene from the Roadmap Epigenomics Histone Modification Site Profiles dataset.
WikiPathways Pathways 2014 pathways involving MIR125B1 protein from the Wikipathways Pathways 2014 dataset.