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Amano S, Hirashita T, Kawano Y, Nishida H, Orimoto H, Kawamura M, Kawasaki T, Masuda T, Endo Y, Ohta M, Daa T, Inomata M. Apoptosis-related factors are relevant to progression of pancreatic neuroendocrine tumors. World J Surg Oncol 2023; 21:381. [PMID: 38082268 PMCID: PMC10714622 DOI: 10.1186/s12957-023-03267-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 12/05/2023] [Indexed: 12/18/2023] Open
Abstract
BACKGROUND Multidisciplinary therapy centered on antitumor drugs is indicated in patients with unresectable pancreatic neuroendocrine tumors (PanNET). However, the criteria for selection of optimal therapeutic agents is controversial. The aim of this study was to assess the malignancy of PanNET for optimal therapeutic drug selection. METHODS Forty-seven patients with PanNET who underwent surgery were reviewed retrospectively, and immunohistochemical characteristics, including expression of GLUT1, SSTR2a, SSTR5, Survivin, X-chromosome-linked inhibitor of apoptosis protein (XIAP), and Caspase3 in the resected specimens, were investigated. Relapse-free survival (RFS) and overall survival (OS) were evaluated with regard to the characteristics using the Kaplan-Meier method and compared with the log-rank test. RESULTS GLUT1 expression showed significant correlation with sex (p = 0.036) and mitotic rate (p = 0.048). Survivin and XIAP expression showed significant correlation with T-stage (p = 0.014 and 0.009), p-Stage (p = 0.028 and 0.045), and mitotic rate (p = 0.023 and 0.007). XIAP expression also significantly influenced OS (p = 0.044). CONCLUSIONS Survivin and XIAP correlated with grade of malignancy, and expression of XIAP in particular was associated with a poor prognosis. Expression of these proteins may be a useful indicator to select optimal therapeutic agents in PanNET.
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Affiliation(s)
- Shota Amano
- Department of Gastroenterological and Pediatric Surgery, Oita University Faculty of Medicine, 1-1 Idaigaoka, Hasama-Machi, Yufu, Oita, 879-5593, Japan.
- Department of Diagnostic Pathology, Oita University Faculty of Medicine, Oita, Japan.
| | - Teijiro Hirashita
- Department of Gastroenterological and Pediatric Surgery, Oita University Faculty of Medicine, 1-1 Idaigaoka, Hasama-Machi, Yufu, Oita, 879-5593, Japan
| | - Yoko Kawano
- Department of Gastroenterological and Pediatric Surgery, Oita University Faculty of Medicine, 1-1 Idaigaoka, Hasama-Machi, Yufu, Oita, 879-5593, Japan
| | - Haruto Nishida
- Department of Diagnostic Pathology, Oita University Faculty of Medicine, Oita, Japan
| | - Hiroki Orimoto
- Department of Gastroenterological and Pediatric Surgery, Oita University Faculty of Medicine, 1-1 Idaigaoka, Hasama-Machi, Yufu, Oita, 879-5593, Japan
| | - Masahiro Kawamura
- Department of Gastroenterological and Pediatric Surgery, Oita University Faculty of Medicine, 1-1 Idaigaoka, Hasama-Machi, Yufu, Oita, 879-5593, Japan
| | - Takahide Kawasaki
- Department of Gastroenterological and Pediatric Surgery, Oita University Faculty of Medicine, 1-1 Idaigaoka, Hasama-Machi, Yufu, Oita, 879-5593, Japan
- Department of Comprehensive Surgery for Community Medicine, Oita University Faculty of Medicine, Oita, Japan
| | - Takashi Masuda
- Department of Gastroenterological and Pediatric Surgery, Oita University Faculty of Medicine, 1-1 Idaigaoka, Hasama-Machi, Yufu, Oita, 879-5593, Japan
| | - Yuichi Endo
- Department of Gastroenterological and Pediatric Surgery, Oita University Faculty of Medicine, 1-1 Idaigaoka, Hasama-Machi, Yufu, Oita, 879-5593, Japan
| | - Masayuki Ohta
- Department of Gastroenterological and Pediatric Surgery, Oita University Faculty of Medicine, 1-1 Idaigaoka, Hasama-Machi, Yufu, Oita, 879-5593, Japan
- Global Oita Medical Advanced Research Center for Health, Oita University, Oita, Japan
| | - Tsutomu Daa
- Department of Diagnostic Pathology, Oita University Faculty of Medicine, Oita, Japan
| | - Masafumi Inomata
- Department of Gastroenterological and Pediatric Surgery, Oita University Faculty of Medicine, 1-1 Idaigaoka, Hasama-Machi, Yufu, Oita, 879-5593, Japan
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Guégan C, Braudeau J, Couriaud C, Dietz GPH, Lacombe P, Bähr M, Nosten-Bertrand M, Onténiente B. PTD-XIAP protects against cerebral ischemia by anti-apoptotic and transcriptional regulatory mechanisms. Neurobiol Dis 2005; 22:177-86. [PMID: 16361106 DOI: 10.1016/j.nbd.2005.10.014] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2005] [Revised: 10/20/2005] [Accepted: 10/27/2005] [Indexed: 12/31/2022] Open
Abstract
Caspases play a major role in the infarction process that follows occlusion of cerebral arteries and are important targets for stroke therapy. We have generated three fusion proteins that link various domains of the X chromosome-linked inhibitor of apoptosis (XIAP), a potent caspase inhibitor, to the protein transduction domain (PTD) of HIV-1/Tat, and have tested their efficacy after distal occlusion of the middle cerebral artery (dMCAO) in mice. PTD-XIAP failed to accumulate in brain structures after intravenous (iv) delivery, but properly transduced cortical cells when applied topically. Shorter constructs efficiently targeted the lesion after iv delivery. All proteins retained their caspase inhibitory activity and significantly reduced infarct volumes. PTD-XIAP reversed long-term impairments in the water maze test. Sequential activation of transcription factors was observed, suggesting that the effects of XIAP are mediated by both direct inhibition of apoptotic mechanisms and secondary regulation of transcription factors involved in neuronal survival.
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MESH Headings
- Animals
- Apoptosis/drug effects
- Apoptosis/genetics
- Brain Ischemia/drug therapy
- Brain Ischemia/genetics
- Brain Ischemia/metabolism
- Cerebral Cortex/drug effects
- Cerebral Cortex/metabolism
- Cerebral Cortex/physiopathology
- Cerebral Infarction/drug therapy
- Cerebral Infarction/physiopathology
- Cerebral Infarction/prevention & control
- Disease Models, Animal
- Gene Products, tat/genetics
- Gene Products, tat/pharmacology
- Gene Products, tat/therapeutic use
- Infarction, Middle Cerebral Artery/drug therapy
- Infarction, Middle Cerebral Artery/genetics
- Infarction, Middle Cerebral Artery/metabolism
- Infusion Pumps
- Male
- Maze Learning/drug effects
- Maze Learning/physiology
- Mice
- Mice, Inbred C57BL
- Protein Structure, Tertiary/genetics
- Recombinant Fusion Proteins/genetics
- Recombinant Fusion Proteins/pharmacology
- Recombinant Fusion Proteins/therapeutic use
- Regulatory Elements, Transcriptional/drug effects
- Regulatory Elements, Transcriptional/genetics
- Transcriptional Activation/drug effects
- Transcriptional Activation/physiology
- X-Linked Inhibitor of Apoptosis Protein/genetics
- X-Linked Inhibitor of Apoptosis Protein/pharmacology
- X-Linked Inhibitor of Apoptosis Protein/therapeutic use
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Affiliation(s)
- Christelle Guégan
- INSERM UMR421, Universite Paris 12, 8, rue du Général Sarrail, F-94010 Creteil cedex, France
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Abstract
The IAPs (inhibitor of apoptosis proteins) are a family of caspase inhibitors that block the execution phase of apoptosis. Overexpression of IAPs confers chemoresistance and, in some groups of patients, is associated with a poor prognosis. Given their role in the development and progression of solid tumors and hematologic malignancies, efforts are underway to develop therapeutic IAP inhibitors, with a focus on X-linked IAP (XIAP) and survivin. Antisense oligonucleotides that target XIAP and survivin have been developed and are currently in phase I clinical trial. Small-molecules that bind and inhibit XIAP have also been identified and are in the process of clinical development. This review focuses on the preclinical data that support the development of IAP-targeted therapies.
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Affiliation(s)
- Aaron D Schimmer
- Princess Margaret Hospital, University of Toronto, Toronto Ontario M5G 2M9, Canada.
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