Basic Information
| LncRNA/CircRNA Name | HOTAIRM1 |
| Synonyms | NA |
| Region | GRCh38_7:27095647-27100265 |
| Ensemble | ENSG00000233429 |
| Refseq | NR_038366 |
Classification Information
| Regulatory Mechanism | Biological Function | Clinical Application | |||
|---|---|---|---|---|---|
| TF | Immune | Survival | |||
| Enhancer | Apoptosis | Drug | 5-fluorouracil | ||
| Variant | Cell Growth | Circulating | |||
| MiRNA | EMT | Metastasis | |||
| Methylation | Coding Ability | Recurrence |
Cancer&Entry Information
| Cancer Name | colorectal cancer |
| ICD-0-3 | C19.9 |
| Methods | qPCR, Western blot, Luciferase reporter assay, RIP |
| Sample | The CRC cell lines HCT116 and SW480 and the normal colorectal epithelial cell line NCM460, CRC tissues and the normal adjacent tissues |
| Expression Pattern | down-regulated |
| Function Description | HOTAIRM1 was downregulated in CRC tissues and cell lines (HCT116 and SW480), and even lower in 5-FU resistant CRC tissues and cell lines (HCT116/ 5-FU and SW480/5-FU). In vitro, effects of HOTAIRM1 dysregulation in 5-FU resistant CRC cells were investigated and its overexpression could reduce cell viability, invasion, migration, and multi-drug resistance as evidenced by MTT assay, Transwell assay, epithelial-mesenchymal transition (EMT), and western blot analyzing expression of drug-resistant genes MRP1 and MDR1, respectively. Mechanically, dual-luciferase reporter assay and RNA immunoprecipitation (RIP) identified that HOTAIRM1 and B-cell translocation gene 3 (BTG3) were target genes of miR-17-5p. Moreover, miR-17-5p was upregulated and BTG3 was downregulated in HCT116/5- FU and SW480/5-FU cells. Silencing of miR-17-5p showed suppressive role on cell viability, invasion, migration, and multi-drug resistance in HCT116/5-FU and SW480/5-FU cells, which could be abolished by HOTAIRM1 knockdown. Similarly, ectopic expression of miR-17-5p reversed BTG3-mediated inhibition on cell viability, invasion, migration, and multi-drug resistance. In vivo, the tumorigenesis of HCT116/5-FU cells when highly expressed HOTAIRM1 by lentivirus infection was inhibited through downregulating miR-17-5p and upregulating BTG3. |
| Pubmed ID | 31261026 |
| Year | 2019 |
| Title | The long non-coding RNA HOTAIRM1 suppresses cell progression via sponging endogenous miR-17-5p/ B-cell translocation gene 3 (BTG3) axis in 5-fluorouracil resistant colorectal cancer cells |
External Links
| Links for HOTAIRM1 | GenBank HGNC NONCODE |
| Links for colorectal cancer | OMIM COSMIC |