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- W3184318436 abstract "Abstract BackgroundLHPP, a histidine phosphatase, has been implicated in tumor progression. However, its role, underlying mechanisms, and prognostic significance in human gastric cancer (GC) are elusive. MethodsWe obtained GC tissues and corresponding normal tissues from 8 patients and identified LHPP as a downregulated gene via RNA-seq. qRT-PCR and western blotting were applied to examine LHPP levels in normal and GC tissues. The prognostic value of LHPP was elucidated using tissue microarray and IHC analyses in two independent GC cohorts. The functional roles and mechanistic insights of LHPP in GC growth and metastasis were evaluated in vitro and in vivo. ResultsThe results showed that LHPP expression was significantly decreased in GC tissues at both the mRNA and protein level. Multivariate Cox regression analysis revealed that LHPP was an independent prognostic factor and effective predictor in patients with GC. The low expression of LHPP was significantly related to the poor prognosis and chemotherapy sensitivity of gastric cancer patients. Moreover, elevated LHPP expression effectively suppressed GC growth and metastasis in vitro and in vivo. Mechanistically, the m6A modification of LHPP mRNA by METTL14 represses its expression; LHPP inhibits the phosphorylation of GSK3b through acetylation, and mediates HIF1A to inhibit glycolysis, proliferation, invasion and metastasis of gastric cancer cells. ConclusionLHPP is regulated by m6A methylation and regulates the metabolism of GC by changing the acetylation level. Thus, LHPP is a potential predictive biomarker and therapeutic target for GC." @default.
- W3184318436 created "2021-08-02" @default.
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- W3184318436 date "2021-07-15" @default.
- W3184318436 modified "2023-10-14" @default.
- W3184318436 title "m6A Methylation Mediates LHPP Acetylation as a Tumour Aerobic Glycolysis Suppressor to Improve the Prognosis of Gastric Cancer" @default.
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- W3184318436 doi "https://doi.org/10.21203/rs.3.rs-680175/v1" @default.
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