Role and mechanism of PTEN in Burkitt's lymphoma

Li,Chuntuan; Xu,Yahong; Xin,Pengliang; Zheng,Yan; Zhu,Xiongpeng

doi:10.3892/or.2020.7457

Role and mechanism of PTEN in Burkitt's lymphoma

Authors:
- Chuntuan Li
- Yahong Xu
- Pengliang Xin
- Yan Zheng
- Xiongpeng Zhu
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Affiliations: Department of Haematology, First Hospital of Quanzhou Affiliated to Fujian Medical University, Quanzhou, Fujian 362000, P.R. China
Published online on: January 9, 2020 https://doi.org/10.3892/or.2020.7457
Pages: 481-490
Copyright: © Li et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

The aim of the present study was to explore the possible mechanisms of phosphatase and tensin homolog (PTEN) in the pathogenesis of Burkitt's lymphoma, and provide novel information that can be used in the targeted treatment of this disease. PTEN lentiviral overexpression vector and short‑hairpin PTEN silencing vectors were constructed. The effect of PTEN on the growth and proliferation of CA46 and RAJI cells was analyzed using a Cell Counting Kit‑8 assay. Apoptosis was detected by Hoechst 33342 and propidium iodide double staining. Flow cytometry was used to analyze the cell cycle. A Transwell chamber was used to detect cell migration and invasion abilities. Western blot analysis was used to detect related protein changes. The mechanism of the effect of PTEN on the biological characteristics of Burkitt's lymphoma cells was subsequently analyzed. The results revealed that PTEN inhibited the proliferation of CA46 and RAJI cells by downregulating the expression of p‑AKT, It was indicated that the upregulation of proapoptotic proteins (including Bad and Bax) induced apoptosis, regulated cyclin (including P53, P21, CDK4, CDK6, cyclin D3 and cyclin H) to inhibit cell cycle progression, and mediated epithelial‑mesenchymal transition‑like cell markers (including E‑cadherin, N‑cadherin, β‑catenin, TCF‑8, vimentin, Slug and Snail) to inhibit cell migration and invasion. In conclusion, the tumor‑suppressor gene PTEN inhibited the phosphoinositide 3‑kinase/protein kinase B (PI3K/AKT) signaling pathway and inhibited the proliferation and migration of Burkitt's lymphoma cells, induced apoptosis and cell cycle arrest, thus playing a crucial role in the pathogenesis of Burkitt's lymphoma.

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