Long non-coding RNA HOTAIR mediates the switching of histone H3 lysine 27 acetylation to methylation to promote epithelial-to-mesenchymal transition in gastric cancer.
No statistically significant differences were found in the allele or genotype distributions of the HOTAIRrs12826786 C>T polymorphism among GC and healthy control subjects (P > 0.05).
The influence of HOTAIR downregulation on GC cell proliferation, chemosensitivity, apoptosis, and invasion were determined by bromodeoxyuridine (BrdU) incorporation assay, flow cytometry analysis, and transwell assay.
We collected all relevant articles and explored the association of HOTAIR expression with clinicopathological features and prognosis in patients with gastric cancer.
We examined the association between three haplotype-tagging SNPs (htSNP) across the whole HOTAIR locus and gastric cancer risk as well as the functional relevance of a gastric cancer susceptibility SNP rs920778.
In conclusion, the results indicated that HOTAIR polymorphism rs920778 was more generally associated with cancer risk, particularly in Asians, while rs4759314 was a risk factor for gastric cancer.
Several lncRNAs such as H19, HOTAIR and MEG3 have been found to be associated with miRNAs in gastric cancer (GC), generating regulatory crosstalk across the transcriptome.
We also showed that HOTAIR recruiting and binding to PRC2 epigenetically represses miR34a, which controls the targets C-Met (HGF/C-Met/Snail pathway) and Snail, thus contributing to GC cell-EMT process and accelerating tumor metastasis.
Previous studies have revealed that HOX transcript antisense intergenic RNA (HOTAIR) was frequently upregulated in various types of cancer, including breast cancer, esophageal cancer, lung cancer and gastric cancer.
No statistically significant differences were found in the allele or genotype distributions of the HOTAIRrs920778 polymorphism among GC and healthy control subjects (P > 0.05).
These results suggest that SNP rs4759314 of HOTAIR acts as a potential biomarker for predicting gastric cancer, and the role of HOXC11 in gastric cancer etiology is warranted to further investigation.
We found that HOTAIR was involved in inhibition of apoptosis and promoted invasiveness, supporting a role for HOTAIR in carcinogenesis and progression of gastric cancer.
The ceRNA regulatory network involving HOTAIR and the positive interaction between HOTAIR and HER2 may contribute to a better understanding of gastric cancer pathogenesis and facilitate the development of lncRNA-directed diagnostics and therapeutics against this disease.
Inhibition of HOTAIR could reduce invasiveness and reverse EMT process in GC cells, indicating the potential role of HOTAIR in GC diagnostics and therapeutics.