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Xu J, Lou X, Wang F, Zhang W, Xu X, Ye Z, Zhuo Q, Wang Y, Jing D, Fan G, Chen X, Zhang Y, Zhou C, Chen J, Qin Y, Yu X, Ji S. MEN1 Deficiency-Driven Activation of the β-Catenin-MGMT Axis Promotes Pancreatic Neuroendocrine Tumor Growth and Confers Temozolomide Resistance. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2308417. [PMID: 39041891 DOI: 10.1002/advs.202308417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 07/12/2024] [Indexed: 07/24/2024]
Abstract
O6-methylguanine DNA methyltransferase (MGMT) removes alkyl adducts from the guanine O6 position (O6-MG) and repairs DNA damage. High MGMT expression results in poor response to temozolomide (TMZ). However, the biological importance of MGMT and the mechanism underlying its high expression in pancreatic neuroendocrine tumors (PanNETs) remain elusive. Here, it is found that MGMT expression is highly elevated in PanNET tissues compared with paired normal tissues and negatively associated with progression-free survival (PFS) time in patients with PanNETs. Knocking out MGMT inhibits cancer cell growth in vitro and in vivo. Ectopic MEN1 expression suppresses MGMT transcription in a manner that depends on β-Catenin nuclear export and degradation. The Leucine 267 residue of MEN1 is crucial for regulating β-Catenin-MGMT axis activation and chemosensitivity to TMZ. Interference with β-Catenin re-sensitizes tumor cells to TMZ and significantly reduces the cytotoxic effects of high-dose TMZ treatment, and MGMT overexpression counteracts the effects of β-Catenin deficiency. This study reveals the biological importance of MGMT and a new mechanism by which MEN1 deficiency regulates its expression, thus providing a potential combinational strategy for treating patients with TMZ-resistant PanNETs.
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Affiliation(s)
- Junfeng Xu
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Xin Lou
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Fei Wang
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Wuhu Zhang
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Xiaowu Xu
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Zeng Ye
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Qifeng Zhuo
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Yan Wang
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Desheng Jing
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Guixiong Fan
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Xuemin Chen
- The First People's Hospital of Changzhou, The Third Affiliated Hospital of Soochow University, Changzhou, 213004, China
| | - Yue Zhang
- The First People's Hospital of Changzhou, The Third Affiliated Hospital of Soochow University, Changzhou, 213004, China
| | - Chenjie Zhou
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Jie Chen
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Yi Qin
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Xianjun Yu
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Shunrong Ji
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
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Saleh Z, Moccia MC, Ladd Z, Joneja U, Li Y, Spitz F, Hong YK, Gao T. Pancreatic Neuroendocrine Tumors: Signaling Pathways and Epigenetic Regulation. Int J Mol Sci 2024; 25:1331. [PMID: 38279330 PMCID: PMC10816436 DOI: 10.3390/ijms25021331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/12/2024] [Accepted: 01/16/2024] [Indexed: 01/28/2024] Open
Abstract
Pancreatic neuroendocrine tumors (PNETs) are characterized by dysregulated signaling pathways that are crucial for tumor formation and progression. The efficacy of traditional therapies is limited, particularly in the treatment of PNETs at an advanced stage. Epigenetic alterations profoundly impact the activity of signaling pathways in cancer development, offering potential opportunities for drug development. There is currently a lack of extensive research on epigenetic regulation in PNETs. To fill this gap, we first summarize major signaling events that are involved in PNET development. Then, we discuss the epigenetic regulation of these signaling pathways in the context of both PNETs and commonly occurring-and therefore more extensively studied-malignancies. Finally, we will offer a perspective on the future research direction of the PNET epigenome and its potential applications in patient care.
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Affiliation(s)
- Zena Saleh
- Department of Surgery, Cooper University Health Care, Camden, NJ 08103, USA; (Z.S.); (Z.L.)
| | - Matthew C. Moccia
- Department of Surgery, Cooper University Health Care, Camden, NJ 08103, USA; (Z.S.); (Z.L.)
| | - Zachary Ladd
- Department of Surgery, Cooper University Health Care, Camden, NJ 08103, USA; (Z.S.); (Z.L.)
| | - Upasana Joneja
- Department of Pathology, Cooper University Health Care, Camden, NJ 08103, USA
| | - Yahui Li
- Department of Surgery, Cooper University Health Care, Camden, NJ 08103, USA; (Z.S.); (Z.L.)
| | - Francis Spitz
- Department of Surgery, Cooper University Health Care, Camden, NJ 08103, USA; (Z.S.); (Z.L.)
| | - Young Ki Hong
- Department of Surgery, Cooper University Health Care, Camden, NJ 08103, USA; (Z.S.); (Z.L.)
| | - Tao Gao
- Department of Surgery, Cooper University Health Care, Camden, NJ 08103, USA; (Z.S.); (Z.L.)
- Camden Cancer Research Center, Camden, NJ 08103, USA
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Chen F, Lu J, Zheng B, Yi N, Xie C, Chen F, Wei D, Jiang H, Qin S. Artesunate Inhibits the Growth of Insulinoma Cells via SLC7A11/ GPX4-mediated Ferroptosis. Curr Pharm Des 2024; 30:230-239. [PMID: 38243946 DOI: 10.2174/0113816128289372240105041038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 12/13/2023] [Accepted: 12/15/2023] [Indexed: 01/22/2024]
Abstract
BACKGROUND Artesunate (ART) has been recognized to induce ferroptosis in various tumor phenotypes, including neuroendocrine tumors. We aimed to investigate the effects of ART on insulinoma and the underlying mechanisms by focusing on the process of ferroptosis. METHODS The CCK8 and colony formation assays were conducted to assess the effectiveness of ART. Lipid peroxidation, glutathione, and intracellular iron content were determined to validate the process of ferroptosis, while ferrostatin-1 (Fer-1) was employed as the inhibitor of ferroptosis. Subcutaneous tumor models were established and treated with ART. The ferroptosis-associated proteins were determined by western blot and immunohistochemistry assays. Pathological structures of the liver were examined by hematoxylin-eosin staining. RESULTS ART suppressed the growth of insulinoma both in vitro and in vivo. Insulinoma cells treated by ART revealed signs of ferroptosis, including increased lipid peroxidation, diminished glutathione levels, and ascending intracellular iron. Notably, ART-treated insulinoma cells exhibited a decline in the expressions of catalytic component solute carrier family 7 member 11 (SLC7A11) and glutathione peroxidase 4 (GPX4). These alterations were negated by Fer-1. Moreover, no hepatotoxicity was observed upon the therapeutic dose of ART. CONCLUSION Artesunate might regulate ferroptosis of insulinoma cells through the SLC7A11/GPX4 pathway.
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Affiliation(s)
- Fengping Chen
- Department of Gastroenterology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Jiexia Lu
- Department of Gastroenterology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Biaolin Zheng
- Department of Gastroenterology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
- Department of Gastroenterology, The Third People's Hospital of Shenzhen City, Shenzhen, Guangdong, China
| | - Nan Yi
- Department of Gastroenterology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
- Department of Gastroenterology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning City, Guangxi, China
| | - Chunxiao Xie
- Department of Gastroenterology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Feiran Chen
- Department of Gastroenterology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Dafu Wei
- Department of Gastroenterology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Haixing Jiang
- Department of Gastroenterology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Shanyu Qin
- Department of Gastroenterology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
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Xu J, Zhang W, Lou X, Ye Z, Qin Y, Chen J, Xu X, Yu X, Ji S. Recent research hotspots in sequencing and the pancreatic neuroendocrine tumor microenvironment. Cancer Biol Med 2023; 20:j.issn.2095-3941.2023.0284. [PMID: 37771139 PMCID: PMC10618947 DOI: 10.20892/j.issn.2095-3941.2023.0284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Accepted: 09/13/2023] [Indexed: 09/30/2023] Open
Affiliation(s)
- Junfeng Xu
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Wuhu Zhang
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Xin Lou
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Zeng Ye
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Yi Qin
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Jie Chen
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Xiaowu Xu
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Xianjun Yu
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
| | - Shunrong Ji
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, China
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