High developmental pluripotency‑associated 4 expression promotes cell proliferation and glycolysis, and predicts poor prognosis in non‑small‑cell lung cancer
| Autor: | Longfei Li, Yuanjin Wang, Feng Suo, Yufeng Wang, Jilei Xu, Yangjie Zhang, Qiang Wang, Xiangju Wei, Jingming Qu |
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| Rok vydání: | 2019 |
| Předmět: |
Male
0301 basic medicine Cancer Research Lung Neoplasms lactate dehydrogenase B Cell Biology Biochemistry 03 medical and health sciences 0302 clinical medicine Downregulation and upregulation Carcinoma Non-Small-Cell Lung Cell Line Tumor Genetics medicine Humans Molecular Biology Cell Proliferation Gene knockdown L-Lactate Dehydrogenase Oncogene Cell growth Nuclear Proteins Cancer Articles Middle Aged glycolysis Cell cycle Prognosis developmental pluripotency-associated 4 medicine.disease Molecular medicine Up-Regulation Gene Expression Regulation Neoplastic Isoenzymes 030104 developmental biology medicine.anatomical_structure non-small-cell lung cancer Oncology 030220 oncology & carcinogenesis Cancer research Molecular Medicine Female |
| Zdroj: | Molecular Medicine Reports |
| ISSN: | 1791-3004 1791-2997 |
| DOI: | 10.3892/mmr.2019.10272 |
| Popis: | The developmental pluripotency-associated 4 (Dppa4) gene serves critical roles in cell self-renewal, as well as in cancer development and progression. However, the regulatory role of Dppa4 in non-small-cell lung cancer (NSCLC) and its underlying mechanisms remain elusive. The aim of the present study was to investigate the biological function of Dppa4 in NSCLC and its underlying mechanism of action. Dppa4 expression was measured in NSCLC tissue samples and cell lines, and its effect on cell proliferation and the expression of glycolytic enzymes was determined. In addition, the underlying mechanisms of Dppa4-induced alterations in glycolysis were analyzed. Univariate and multivariate analyses were also performed to analyze the prognostic significance of clinicopathological characteristics. Dppa4 was found to be highly expressed in NSCLC tissues and cell lines. Furthermore, it was observed that Dppa4 was correlated with the degree of tumor differentiation and TNM stage. Univariate and multivariate analyses identified Dppa4 expression and clinical stage as prognostic factors for NSCLC patients. Kaplan-Meier analysis further revealed that patients with lower Dppa4 expression exhibited a better prognosis. In NSCLC cells, Dppa4 knockdown inhibited cell proliferation, while Dppa4 overexpression enhanced cell proliferation, which was likely mediated by glycolysis promotion. Dppa4 knockdown had no evident effect on the majority of enzymes examined; however, glucose transporter type 4 (GLUT-4) and pyruvate kinase isozyme M2 were significantly upregulated, and hexokinase II (HK-II) and lactate dehydrogenase B (LDHB) were downregulated following Dppa4 knockdown. By contrast, Dppa4 overexpression resulted in downregulation of GLUT-4, and upregulation of HK-II, enolase and LDHB, whereas it had no effect on other enzymes. Since the most evident effect was observed on LDHB, further functional experiments demonstrated that this enzyme reversed the promoting effects of Dppa4 in NSCLC. In conclusion, Dppa4 promotes NSCLC progression, partly through glycolysis by LDHB. Thus, the Dppa4-LDHB axis critically contributes to glycolysis in NSCLC cells, thereby promoting NSCLC development and progression. |
| Databáze: | OpenAIRE |
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