MIRLET7B microRNA let-7b [Homo sapiens (human)] - Gene

Summary

Official Symbol: MIRLET7Bprovided by HGNC
Official Full Name: microRNA let-7bprovided by HGNC
Primary source: HGNC:HGNC:31479
See related: Ensembl:ENSG00000284520 MIM:611249; miRBase:MI0000063; AllianceGenome:HGNC:31479
Gene type: ncRNA
RefSeq status: PROVISIONAL
Organism: Homo sapiens
Lineage: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
Also known as: LET7B; let-7b; MIRNLET7B; hsa-let-7b
Summary: 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]
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Genomic context

Location:: 22q13.31

Exon count:: 1

Annotation release	Status	Assembly	Chr	Location
RS_2024_08	current	GRCh38.p14 (GCF_000001405.40)	22	NC_000022.11 (46113686..46113768)
RS_2024_08	current	T2T-CHM13v2.0 (GCF_009914755.1)	22	NC_060946.1 (46598374..46598456)
RS_2024_09	previous assembly	GRCh37.p13 (GCF_000001405.25)	22	NC_000022.10 (46509566..46509648)

Chromosome 22 - NC_000022.11 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

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Genomic Sequence:

Go to nucleotide: Graphics FASTA GenBank

Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

Inhibition of Let-7b-5p maturation by LIN28A promotes thermal skin damage repair after burn injury.
Title: Inhibition of Let-7b-5p maturation by LIN28A promotes thermal skin damage repair after burn injury.
Serum-derived exosomal hsa-let-7b-5p as a biomarker for predicting the severity of coronary stenosis in patients with coronary heart disease and hyperglycemia.
Title: Serum‑derived exosomal hsa‑let‑7b‑5p as a biomarker for predicting the severity of coronary stenosis in patients with coronary heart disease and hyperglycemia.
Knockdown of let-7b in leukemia associated macrophages inhibit acute myeloid leukemia progression.
Title: Knockdown of let-7b in leukemia associated macrophages inhibit acute myeloid leukemia progression.
PRB inhibited cell proliferation through let-7b-E2F1 in breast cancer.
Title: PRB inhibited cell proliferation through let-7b-E2F1 in breast cancer.
Let-7b-5p inhibits colon cancer progression by prohibiting APC ubiquitination degradation and the Wnt pathway by targeting NKD1.
Title: Let-7b-5p inhibits colon cancer progression by prohibiting APC ubiquitination degradation and the Wnt pathway by targeting NKD1.
Crohn's disease-associated AIEC inhibiting intestinal epithelial cell-derived exosomal let-7b expression regulates macrophage polarization to exacerbate intestinal fibrosis.
Title: Crohn's disease-associated AIEC inhibiting intestinal epithelial cell-derived exosomal let-7b expression regulates macrophage polarization to exacerbate intestinal fibrosis.
Exosomes derived from M1 macrophages inhibit the proliferation of the A549 and H1299 lung cancer cell lines via the miRNA-let-7b-5p-GNG5 axis.
Title: Exosomes derived from M1 macrophages inhibit the proliferation of the A549 and H1299 lung cancer cell lines via the miRNA-let-7b-5p-GNG5 axis.
Expression analysis of miRNA hsa-let7b-5p in naso-oropharyngeal swabs of COVID-19 patients supports its role in regulating ACE2 and DPP4 receptors.
Title: Expression analysis of miRNA hsa-let7b-5p in naso-oropharyngeal swabs of COVID-19 patients supports its role in regulating ACE2 and DPP4 receptors.
Integrated transcriptomic and regulatory network analyses uncovers the role of let-7b-5p, SPIB, and HLA-DPB1 in sepsis.
Title: Integrated transcriptomic and regulatory network analyses uncovers the role of let-7b-5p, SPIB, and HLA-DPB1 in sepsis.
let-7b-5p suppresses the proliferation and migration of pulmonary artery smooth muscle cells via down-regulating IGF1.
Title: let-7b-5p suppresses the proliferation and migration of pulmonary artery smooth muscle cells via down-regulating IGF1.

Submit: New GeneRIF Correction See all GeneRIFs (126)

Phenotypes

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Review eQTL and phenotype association data in this region using PheGenI

Variation

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See studies and variants in dbVar

See Variation Viewer (GRCh37.p13)

See Variation Viewer (GRCh38)

Interactions

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

General gene information

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Gene Ontology Provided by GOA

Function	Evidence Code	Pubs
enables mRNA base-pairing translational repressor activity	IDA Inferred from Direct Assay more info	PubMed

Process	Evidence Code	Pubs
involved_in antibacterial innate immune response	IDA Inferred from Direct Assay more info	PubMed
involved_in cellular response to reactive oxygen species	IDA Inferred from Direct Assay more info	PubMed
involved_in miRNA-mediated gene silencing by mRNA destabilization	IDA Inferred from Direct Assay more info	PubMed
involved_in miRNA-mediated post-transcriptional gene silencing	IDA Inferred from Direct Assay more info	PubMed
involved_in miRNA-mediated post-transcriptional gene silencing	IEA Inferred from Electronic Annotation more info
acts_upstream_of negative regulation of blood vessel endothelial cell migration	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in negative regulation of cellular response to transforming growth factor beta stimulus	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in negative regulation of execution phase of apoptosis	IDA Inferred from Direct Assay more info	PubMed
involved_in negative regulation of hydrogen peroxide-mediated programmed cell death	IDA Inferred from Direct Assay more info	PubMed
involved_in negative regulation of macrophage apoptotic process	IDA Inferred from Direct Assay more info	PubMed
involved_in negative regulation of transforming growth factor beta receptor signaling pathway	IGI Inferred from Genetic Interaction more info	PubMed
acts_upstream_of negative regulation of vascular associated smooth muscle cell migration	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in positive regulation of ERK1 and ERK2 cascade	IDA Inferred from Direct Assay more info	PubMed
acts_upstream_of positive regulation of angiogenesis	IDA Inferred from Direct Assay more info	PubMed
involved_in positive regulation of angiogenesis	IDA Inferred from Direct Assay more info	PubMed
acts_upstream_of positive regulation of blood vessel endothelial cell proliferation involved in sprouting angiogenesis	IDA Inferred from Direct Assay more info	PubMed

Component	Evidence Code	Pubs
part_of RISC complex	IEA Inferred from Electronic Annotation more info
located_in extracellular exosome	IDA Inferred from Direct Assay more info	PubMed
located_in extracellular space	HDA more info	PubMed
located_in extracellular vesicle	HDA more info	PubMed

NCBI Reference Sequences (RefSeq)

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RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.