The pseudogene PTTG3P promotes cell migration and invasion in esophageal squamous cell carcinoma

Zhang, Zhenhua; Shi, Zhengyuan

doi:10.1515/med-2019-0057

Cited by 16 publications

(11 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The PTTG gene family consists of three members: one pseudogene ( PTTG3P ) and two protein coding genes, namely PTTG1 and PTTG2 [ 12 ]. Numerous studies have proven the significant role of PTTGs in cancer initiation and progression [ 11 , 13 , 16 , 17 , 18 ], although the mechanisms of these processes mostly remain unclear. It is known that PTTG3P influences tumor growth and metastasis in both cervical cancer and hepatocellular carcinoma [ 17 , 18 ].…”

Section: Discussionmentioning

confidence: 99%

“…The coexisting expression of PTTG1 and PTTG2 genes with the PTTG3P pseudogene may suggest that PTTG3P regulates PTTG1 and PTTG2 . It is possible that PTTG3P positively promotes the regulation of parental genes PTTG1 and PTTG2 , as is the case in esophageal squamous cell carcinoma [ 16 ]. In vitro studies have confirmed that exogenously the overexpression of PTTG3P promotes the transcription of its parental genes PTTG1 and PTTG2 in esophageal squamous cell carcinoma cells.…”

Section: Discussionmentioning

confidence: 99%

“…In vitro studies have confirmed that exogenously the overexpression of PTTG3P promotes the transcription of its parental genes PTTG1 and PTTG2 in esophageal squamous cell carcinoma cells. However, the mechanism behind this discovery remains unknown [ 16 ].…”

Section: Discussionmentioning

confidence: 99%

“…The latter is a pituitary tumor-transforming 3 pseudogene ( PTTG3P ; previous symbol: PTTG3 ). It is an intronless gene highly homologous to PTTG1 and PTTG2 [ 16 ]. PTTG3P can be expressed in a variety of normal adult tissues [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

“…It is an intronless gene highly homologous to PTTG1 and PTTG2 [ 16 ]. PTTG3P can be expressed in a variety of normal adult tissues [ 16 ]. Moreover, it has a limited protein-coding capacity, and thus, it is regarded as one long non-coding RNA (lncRNA).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

The Oncogenic Roles of PTTG1 and PTTG2 Genes and Pseudogene PTTG3P in Head and Neck Squamous Cell Carcinomas

et al. 2020

View full text Add to dashboard Cite

Background: Head and neck squamous cell carcinomas are a group of heterogeneous diseases that occur in the mouth, pharynx and larynx and are characterized by poor prognosis. A low overall survival rate leads to a need to develop biomarkers for early head and neck squamous cell carcinomas detection, accurate prognosis and appropriate selection of therapy. Therefore, in this paper, we investigate the biological role of the PTTG3P pseudogene and associated genes PTTG1 and PTTG2 and their potential use as biomarkers. Methods: Based on TCGA data and the UALCAN database, PTTG3P, PTTG1 and PTTG2 expression profiles and clinicopathological features with TP53 gene status as well as expression levels of correlated genes were analyzed in patients’ tissue samples. The selected genes were classified according to their biological function using the PANTHER tool. Gene Set Enrichment Analysis software was used for functional enrichment analysis. All statistical analyses were performed using GraphPad Prism 5. Results: In head and neck squamous cell carcinomas, significant up-regulation of the PTTG3P pseudogene, PTTG1 and PTTG2 genes’ expression between normal and cancer samples were observed. Moreover, the expression of PTTG3P, PTTG1 and PTTG2 depends on the type of mutation in TP53 gene, and they correlate with genes from p53 pathway. PTTG3P expression was significantly correlated with PTTG1 as well as PTTG2, as was PTTG1 expression with PTTG2. Significant differences between expression levels of PTTG3P, PTTG1 and PTTG2 in head and neck squamous cell carcinomas patients were also observed in clinicopathological contexts. The contexts taken into consideration included: T-stage for PTTG3P; grade for PTTG3, PTTG1 and PTTG2; perineural invasion and lymph node neck dissection for PTTG1 and HPV p16 status for PTTG3P, PTTG1 and PTTG2. A significantly longer disease-free survival for patients with low expressions of PTTG3P and PTTG2, as compared to high expression groups, was also observed. Gene Set Enrichment Analysis indicated that the PTTG3 high-expressing group of patients have the most deregulated genes connected with DNA repair, oxidative phosphorylation and peroxisome pathways. For PTTG1, altered genes are from DNA repair groups, Myc targets, E2F targets and oxidative phosphorylation pathways, while for PTTG2, changes in E2F targets, G2M checkpoints and oxidative phosphorylation pathways are indicated. Conclusions: PTTG3P and PTTG2 can be used as a prognostic biomarker in head and neck squamous cell carcinomas diagnostics. Moreover, patients with high expressions of PTTG3P, PTTG1 or PTTG2 have worse outcomes due to upregulation of oncogenic pathways and more aggressive phenotypes.

show abstract