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CircJPH1 promote the malignant progression of esophageal squamous cell carcinoma

ABSTRACT: The gene-level signaling theory of circJPH1 downstream target was searched by Ailgent expression microarray technology, and the differentially expressed genes in KYSE150 cells before and after overexpression of circJPH1 were analyzed by gene microarray, and they were deleted and analyzed by GO and KEGG.

ORGANISM(S): Homo sapiens

PROVIDER: GSE268051 | GEO | 2024/05/26

REPOSITORIES: GEO

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Project description:SET (Su) and MYND (myeloid-Nervy-DEAF-1) domain-containing protein (SMYD) is a methyltransferase family, including five members of which SMYD1, SMYD2, SMYD3 and SMYD4, has been found to play critical roles in human carcinogenesis. It has been demonstrated that the altered expression of SMYD3 is associated with the progression of several solid tumors, including bladder cancer, glioma, gastric cancer, prostate cancer and colorectal cancer. Several trials have explored the effects of SMYD3 overexpression on proliferation, viability, cancer cells migration and invasion. The series of elegant experiments suggested that SMYD3 could serve as a potential biomarker for clinically aggressive disease and an attractive therapeutic target. In our previous study (PMID: 26980013), we found SMYD3 expression is frequently upregulated in human esophageal squamous cell carcinoma (ESCC) clinical tissues, correlating with overall survival of ESCC patients. RNAi-mediated knockdown of SMYD3 suppressed ESCC cell proliferation, migration and invasion in vitro, and inhibited local tumor invasion in vivo. To identify genes and biological pathways associated with SMYD3 functions and mechanism, SMYD3 was knockdowned bypGLV3/H1/GFP/+Puro Vector in ESCC cell line KYSE150 with an empty plasmid as a control, these two cells were applied for mRNA expression profile analyses to find the differentially expressed genes using GeneChipÂ® PrimeViewâ¢ Human Gene Expression Array. shRNA sequences targeting SMYD3 was ligated into the pGLV3/H1/GFP/+Puro Vector and transfected into ESCC cell line KYSE150 with an empty plasmid as a control. The mRNA expression profiles of SMYD3 knockdown was analyzed by GeneChipÂ®Â PrimeViewâ¢Â HumanÂ Gene Expression Array (Affymetrix,Â USA). The knockdown of SMYD3 was confirmed by QRT-PCR and Western blot. Total RNAs from SMYD3 knockdown cells and control cells were extracted for GeneChipÂ® PrimeViewâ¢ Human Gene Expression Array.

Project description:ObjectiveOur previous study suggested cyclin-dependent kinase-like 3 (CDKL3) acts as a new oncogene in esophageal squamous cell carcinoma (ESCC) cell line TE-1. However, the molecular mechanisms and biological effects of CDKL3 in ESCC remain unknown. In the present study, we aimed to explore the clinical significance of CDKL3 in ESCC and how CDKL3 regulates the malignant behavior of ESCC.MethodsESCC samples were stained by immunohistochemical staining (IHC) and analyzed for the expression of CDKL3. The functions of CDKL3 on proliferation, apoptosis, migration, invasion, and colony formation were investigated by celigo assay, MTT assay, colony formation, caspase 3/7 activity analysis, transwell migration and invasion assay, respectively. A transplanted tumor model was established to study the functions of FLVCR1 on the tumorigenesis of ESCC cells. Microarray analysis was utilized to identify the CDKL3-regulated genes in ESCC cells.ResultsESCC tumor tissues possessed a significantly higher expression of CDKL3 and autophagy-related gene 5 (ATG5) than matched adjacent normal tissues. The high expressions of CDKL3 were positively associated with the tumor-node-metastasis (TNM) stage and Ki67. Upregulated ATG5 expression was positively correlated with male, advanced tumor (T) stage, and TNM stage. Kaplan-Meier analysis showed that ESCC patients with higher expression of CDKL3 or ATG5 had a shorter overall survival. The worst prognosis was recognized in patients with both high manifestations of CDKL3 and ATG5. Time-dependent receiver operating characteristic (ROC) curve was established to reveal that the combination of CDKL3, ATG5, and TNM stage-based model had better prognostic accuracy than TNM stage. Moreover, CDKL3 knockdown markedly repressed cell growth and aggressivity in vitro and in vivo. Mechanistically, ATG5 was confirmed as a downstream gene involved in the pro-oncogenic function of CDKL3.ConclusionCDKL3 can be utilized as an independent poor prognostic marker in ESCC patients. Furthermore, CDKL3 may promote tumor profession, invasion, metastasis, and prohibit tumor apoptosis partly by ATG5 activation.

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CircJPH1 promote the malignant progression of esophageal squamous cell carcinoma

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