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Wang K, Wei J, Ma J, Jia Q, Liu Y, Chai J, Xu J, Xu T, Zhao D, Wang Y, Yan Q, Guo S, Guo X, Zhu F, Fan L, Li M, Wang Z. Phosphorylation of PBK/TOPK Tyr74 by JAK2 promotes Burkitt lymphoma tumor growth. Cancer Lett 2022; 544:215812. [PMID: 35780928 DOI: 10.1016/j.canlet.2022.215812] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 06/08/2022] [Accepted: 06/27/2022] [Indexed: 11/02/2022]
Abstract
Burkitt lymphoma (BL), which is characterized by high invasiveness, is a subgroup of non-Hodgkin lymphoma. Although BL is regarded as a highly curable disease, especially for children, some patients unfortunately still do not respond adequately. The understanding of the etiology and molecular mechanisms of BL is still limited, and targeted therapies are still lacking. Here, we found that T-LAK cell-derived protein kinase (TOPK) and phosphorylated Janus kinase 2 (p-JAK2) are highly expressed in the tissues of BL patients. We report that TOPK directly binds to and is phosphorylated at Tyr74 by JAK2. Histone H3, one of the downstream targets of TOPK, is also phosphorylated in vivo and in vitro. Furthermore, we report that the phosphorylation of TOPK at Tyr74 by JAK2 plays a vital role in the proliferation of BL cells and promotes BL tumorigenesis in vivo. Phosphorylation of TOPK at Tyr74 by JAK2 enhances the stability of TOPK. Collectively, our results suggest that the JAK2/TOPK/histone H3 axis plays a key role in the proliferation of BL cells and BL tumorigenesis in vivo.
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Affiliation(s)
- Kaijing Wang
- State Key Laboratory of Cancer Biology, Department of Pathology, Xijing Hospital and School of Basic Medicine, Air Force Medical University, Xi'an, China
| | - Jie Wei
- State Key Laboratory of Cancer Biology, Department of Pathology, Xijing Hospital and School of Basic Medicine, Air Force Medical University, Xi'an, China
| | - Jing Ma
- State Key Laboratory of Cancer Biology, Department of Pathology, Xijing Hospital and School of Basic Medicine, Air Force Medical University, Xi'an, China
| | - Qingge Jia
- Department of Reproductive Endocrinology, Xi'an International Medical Center Hospital, Northwest University, Xi'an, China
| | - Yixiong Liu
- State Key Laboratory of Cancer Biology, Department of Pathology, Xijing Hospital and School of Basic Medicine, Air Force Medical University, Xi'an, China
| | - Jia Chai
- State Key Laboratory of Cancer Biology, Department of Pathology, Xijing Hospital and School of Basic Medicine, Air Force Medical University, Xi'an, China
| | - Junpeng Xu
- State Key Laboratory of Cancer Biology, Department of Pathology, Xijing Hospital and School of Basic Medicine, Air Force Medical University, Xi'an, China
| | - Tianqi Xu
- State Key Laboratory of Cancer Biology, Department of Pathology, Xijing Hospital and School of Basic Medicine, Air Force Medical University, Xi'an, China
| | - Danhui Zhao
- State Key Laboratory of Cancer Biology, Department of Pathology, Xijing Hospital and School of Basic Medicine, Air Force Medical University, Xi'an, China
| | - Yingmei Wang
- State Key Laboratory of Cancer Biology, Department of Pathology, Xijing Hospital and School of Basic Medicine, Air Force Medical University, Xi'an, China
| | - Qingguo Yan
- State Key Laboratory of Cancer Biology, Department of Pathology, Xijing Hospital and School of Basic Medicine, Air Force Medical University, Xi'an, China
| | - Shuangping Guo
- State Key Laboratory of Cancer Biology, Department of Pathology, Xijing Hospital and School of Basic Medicine, Air Force Medical University, Xi'an, China
| | - Xinjian Guo
- Department of Pathology, Affiliated Hospital of Qinghai University, Xining City, Qinghai Province, China
| | - Feng Zhu
- Cancer Research Institute, Affiliated Hospital of Guilin Medical University, Guilin, China
| | - Linni Fan
- State Key Laboratory of Cancer Biology, Department of Pathology, Xijing Hospital and School of Basic Medicine, Air Force Medical University, Xi'an, China.
| | - Mingyang Li
- State Key Laboratory of Cancer Biology, Department of Pathology, Xijing Hospital and School of Basic Medicine, Air Force Medical University, Xi'an, China.
| | - Zhe Wang
- State Key Laboratory of Cancer Biology, Department of Pathology, Xijing Hospital and School of Basic Medicine, Air Force Medical University, Xi'an, China.
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Lee YJ, Park JH, Oh SM. TOPK promotes epithelial-mesenchymal transition and invasion of breast cancer cells through upregulation of TBX3 in TGF-β1/Smad signaling. Biochem Biophys Res Commun 2019; 522:270-277. [PMID: 31757421 DOI: 10.1016/j.bbrc.2019.11.104] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 11/16/2019] [Indexed: 12/25/2022]
Abstract
TOPK has been suggested to contribute to invasion of lung, prostate, gastric, pancreatic or breast cancer cells. However, how TOPK mediates TGF-β1/Smad signaling leading to epithelial-mesenchymal transition (EMT) and invasion of breast cancer cells remains unknown. Here we report that TOPK upregulates T-box transcription factor TBX3 to enhance TGF-β1-induced EMT and invasion of MDA-MB-231 breast cancer cells. Expression of endogenous TOPK was promoted by TGF-β1 treatment of MDA-MB-231 cells time-dependently. In addition, knockdown of TOPK attenuated TGF-β1-induced phosphorylation or transcriptional activity of Smad3. Meanwhile, levels of both mRNA and protein of TBX3 induced by TGF-β1 were abolished by TOPK depletion. Also, knockdown of TBX3 inhibited TGF-β1 induction of EMT-related genes Snail, Slug or Fibronectin. Furthermore, ablation of TOPK or TBX3 suppressed TGF-β1-induced MDA-MB-231 cell invasion. Collectively, we conclude that TOPK positively regulates TBX3 in TGF-β1/Smad signaling pathway, thereby enhancing EMT and invasion of breast cancer cells, implying a mechanistic role of TOPK in TGF-β1/Smad signaling.
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Affiliation(s)
- Young-Ju Lee
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon, 35365, South Korea
| | - Jung-Hwan Park
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon, 35365, South Korea
| | - Sang-Muk Oh
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon, 35365, South Korea; Priority Research Center, Myunggok Medical Research Institute, College of Medicine, Konyang University, Daejeon, 35365, South Korea.
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Wang C, Xu W, Hao W, Wang B, Zheng Q. Alternol inhibits the proliferation and induces the differentiation of the mouse melanoma B16F0 cell line. Oncol Rep 2016; 36:1150-6. [PMID: 27278753 DOI: 10.3892/or.2016.4844] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2015] [Accepted: 03/02/2016] [Indexed: 11/06/2022] Open
Abstract
High malignant potential and low susceptibility to treatment are characteristics of malignant melanoma. Alternol, a novel compound purified from microbial fermentation products obtained from the bark of the yew tree, exhibits a variety of antitumor activities. Based on these findings, the aim of the present study was to extend the knowledge on the antineoplastic effect of alternol in the mouse melanoma B16F0 cell line. Alternol significantly inhibited the proliferation and colony formation of B16F0 cells in a dose-dependent manner as detected by MTT and soft agar colony formation assays. NaOH alkaline lysis and oxidation of Dopa indicated that alternol enhanced the melanin content and tyrosinase activity of the B16F0 cells and results also showed a dose‑response relationship. Morphologic changes accompanied by extended dendrites were discovered in the B16F0 cells after treatment with alternol. Furthermore, the mRNA levels of tyrosinase, Trp1 and Trp2 were increased by alternol. Our results confirmed that alternol possesses marked antineoplastic properties against melanoma cells, indicating that this microbial fermentation product is a promising agent for the differentiation therapy of cancer. The inhibition of cell proliferation and colony formation by alternol was associated with both cytotoxicity and induction of differentiation.
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Affiliation(s)
- Caixia Wang
- Binzhou Medical University, Yantai, Shandong 264003, P.R. China
| | - Wenjuan Xu
- Binzhou Medical University, Yantai, Shandong 264003, P.R. China
| | - Wenjin Hao
- Binzhou Medical University, Yantai, Shandong 264003, P.R. China
| | - Bingsheng Wang
- Binzhou Medical University, Yantai, Shandong 264003, P.R. China
| | - Qiusheng Zheng
- Binzhou Medical University, Yantai, Shandong 264003, P.R. China
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