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He L, Boulant S, Stanifer M, Guo C, Nießen A, Chen M, Felix K, Bergmann F, Strobel O, Schimmack S. The link between menin and pleiotrophin in the tumor biology of pancreatic neuroendocrine neoplasms. Cancer Sci 2022; 113:1575-1586. [PMID: 35179814 PMCID: PMC9128182 DOI: 10.1111/cas.15301] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 01/26/2022] [Accepted: 01/30/2022] [Indexed: 11/29/2022] Open
Abstract
MEN1, which encodes menin protein, is the most frequently mutated gene in pancreatic neuroendocrine neoplasms (pNEN). Pleiotrophin (PTN) was reported being a downstream factor of menin and to promote metastasis in different tumor entities. In this study, the effect of menin and its link to PTN were assessed on features of pNEN cells and outcome of pNEN patients. The expression of menin and PTN in pNEN patient tissues were examined by qRT-PCR and western blot and compared to their metastasis status. Functional assays, including transwell migration/invasion and scratch wound healing assays, were performed on specifically designed CRISPR/Cas9-mediated MEN1-knockout (MEN1-KO) pNEN cell lines (BON1MEN1-KO and QGP1MEN1-KO ) to study the metastasis of pNEN. Among 30 menin negative pNEN patients, 21 revealed a strong protein expression of PTN. This combination was associated with metastasis and shorter disease-free survival. Accordingly, in BON1MEN1-KO and QGP1MEN1-KO cells, PTN protein expression was positively associated with enhanced cell migration and invasion, which could be reversed by PTN silencing. PTN is a predicting factor of metastatic behavior of menin-deficient-pNEN. In vitro, menin is able to both promote and suppress the metastasis of pNEN by regulating PTN expression depending on the tumoral origin of pNEN cells.
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Affiliation(s)
- Liping He
- Department of General, Visceral and Transplantation Surgery, Heidelberg University Hospital, Heidelberg, Germany.,Department of Medical Oncology, The First Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310003, P.R. China
| | - Steeve Boulant
- Center for Integrative Infectious Disease Research, Heidelberg University, Heidelberg, Germany
| | - Megan Stanifer
- Center for Integrative Infectious Disease Research, Heidelberg University, Heidelberg, Germany
| | - Cuncai Guo
- Center for Integrative Infectious Disease Research, Heidelberg University, Heidelberg, Germany
| | - Anna Nießen
- Department of General, Visceral and Transplantation Surgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Mingyi Chen
- Department of General, Visceral and Transplantation Surgery, Heidelberg University Hospital, Heidelberg, Germany.,Department of Breast Surgery, The First Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310003, P.R. China
| | - Klaus Felix
- Department of General, Visceral and Transplantation Surgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Frank Bergmann
- Institute of Pathology, Heidelberg University, Heidelberg, Germany
| | - Oliver Strobel
- Department of General, Visceral and Transplantation Surgery, Heidelberg University Hospital, Heidelberg, Germany
| | - Simon Schimmack
- Department of General, Visceral and Transplantation Surgery, Heidelberg University Hospital, Heidelberg, Germany
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2
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Xu JL, Dong S, Sun LL, Zhu JX, Liu J. Multiple endocrine neoplasia type 1 combined with thyroid neoplasm: A case report and review of literatures. World J Clin Cases 2022; 10:1032-1040. [PMID: 35127917 PMCID: PMC8790451 DOI: 10.12998/wjcc.v10.i3.1032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 07/07/2021] [Accepted: 12/23/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Multiple endocrine neoplasia type 1 (MEN1) is a rare hereditary tumor syndrome inherited in an autosomal dominant manner and presents mostly as parathyroid, endocrine pancreas (such as gastrinoma) and anterior pituitary tumors. At present, papillary thyroid carcinoma (PTC) and nodular goiter are not regarded as components of MEN1.
CASE SUMMARY A 35-year-old woman presented with MEN1 accompanied by coinstantaneous PTC and nodular goiter. The pathological diagnosis was PTC with cervical lymph node metastasis, nodular goiter, parathyroid cyst and adenomatoid hyperplasia. Genetic testing was performed and a MEN1 gene mutation was detected. The patient underwent unilateral lobectomy of the thyroid gland and surgical removal of the parathyroid tumors. At 18 mo of follow-up, ultrasonic examination of the neck showed no abnormality. Serum calcium and parathyroid hormone levels were normal. No new MEN1-associated tumors were detected.
CONCLUSION The role of inactivating mutations of MEN1 gene in tumorigenesis of PTC and/or nodular goiter remains to be determined by more case reports and further research.
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Affiliation(s)
- Jia-Lu Xu
- Department ofThyroid Surgery, The First Hospital of Jilin University, Changchun 130021, Jilin Province, China
| | - Su Dong
- Department of Anesthesia, The First Hospital of Jilin University, Changchun 130021, Jilin Province, China
| | - Le-Le Sun
- Department ofThyroid Surgery, The First Hospital of Jilin University, Changchun 130021, Jilin Province, China
| | - Jin-Xin Zhu
- Department ofThyroid Surgery, The First Hospital of Jilin University, Changchun 130021, Jilin Province, China
| | - Jia Liu
- Department of Thyroid Surgery, The First Hospital of Jilin University, Changchun 130012, Jilin Province, China
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3
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Yang Y, Jiang D, Zhou Z, Xiong H, Yang X, Peng G, Xia W, Wang S, Lei H, Zhao J, Qian Z, Wu S, Pang J. CDK7 blockade suppresses super-enhancer-associated oncogenes in bladder cancer. Cell Oncol (Dordr) 2021; 44:871-887. [PMID: 33905040 DOI: 10.1007/s13402-021-00608-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 04/08/2021] [Indexed: 11/25/2022] Open
Abstract
PURPOSE Transcriptional addiction plays a pivotal role in maintaining the hallmarks of cancer cells. Thus, targeting super-enhancers (SEs), which modulate the transcriptional activity of oncogenes, has become an attractive strategy for cancer therapy. As yet, however, the molecular mechanisms of this process in bladder cancer (BC) remain to be elucidated. Here, we aimed to provide detailed information regarding the SE landscape in BC and to investigate new potential pharmaceutical targets for BC therapy. METHODS We employed THZ1 as a potent and specific CDK7 inhibitor. In vitro and in vivo studies were carried out to investigate the anticancer and apoptosis-inducing effects of THZ1 on BC cells. Whole-transcriptome sequencing (RNA-seq) and chromatin immunoprecipitation sequencing (ChIP-seq) were performed to investigate the mechanism and function of SE-linked oncogenic transcription in BC cells. RESULTS We found that THZ1 serves as an effective and potent inhibitor with suppressive activity against BC cells. An integrative analysis of THZ1-sensitive and SE-associated oncogenes yielded potential new pharmaceutical targets, including DDIT4, B4GALT5, PSRC1 and MED22. Combination treatment with THZ1 and the DDIT4 inhibitor rapamycin effectively suppressed BC cell growth. In addition, we found that THZ1 and rapamycin sensitized BC cells to conventional chemotherapy. CONCLUSIONS Our data indicate that exploring BC gene regulatory mechanisms associated with SEs through integrating RNA-seq and ChIP-seq data improves our understanding of BC biology and provides a basis for innovative therapies.
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Affiliation(s)
- Yafei Yang
- Department of Urology, Kidney and Urology Center, Pelvic Floor Disorders Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Donggen Jiang
- Department of Urology, Kidney and Urology Center, Pelvic Floor Disorders Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Ziyu Zhou
- Urology Institute of Shenzhen University, The Third Affiliated Hospital of Shenzhen University, Shenzhen University, Shenzhen, 518000, China
- Shenzhen Following Precision Medical Research Institute, Luohu Hospital Group, Shenzhen, 518000, China
| | - Haiyun Xiong
- Department of Urology, Kidney and Urology Center, Pelvic Floor Disorders Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Xiangwei Yang
- Department of Urology, Kidney and Urology Center, Pelvic Floor Disorders Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Guoyu Peng
- Urology Institute of Shenzhen University, The Third Affiliated Hospital of Shenzhen University, Shenzhen University, Shenzhen, 518000, China
- Shenzhen Following Precision Medical Research Institute, Luohu Hospital Group, Shenzhen, 518000, China
| | - Wuchao Xia
- Urology Institute of Shenzhen University, The Third Affiliated Hospital of Shenzhen University, Shenzhen University, Shenzhen, 518000, China
- Shenzhen Following Precision Medical Research Institute, Luohu Hospital Group, Shenzhen, 518000, China
| | - Shang Wang
- Urology Institute of Shenzhen University, The Third Affiliated Hospital of Shenzhen University, Shenzhen University, Shenzhen, 518000, China
- Shenzhen Following Precision Medical Research Institute, Luohu Hospital Group, Shenzhen, 518000, China
| | - Hanqi Lei
- Department of Urology, Kidney and Urology Center, Pelvic Floor Disorders Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Jing Zhao
- Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, Guangdong, 518107, China
| | - Zhirong Qian
- Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, Guangdong, 518107, China
| | - Song Wu
- Urology Institute of Shenzhen University, The Third Affiliated Hospital of Shenzhen University, Shenzhen University, Shenzhen, 518000, China.
- Shenzhen Following Precision Medical Research Institute, Luohu Hospital Group, Shenzhen, 518000, China.
| | - Jun Pang
- Department of Urology, Kidney and Urology Center, Pelvic Floor Disorders Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China.
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4
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Arakelyan J, Zohrabyan D, Philip PA. Molecular profile of pancreatic neuroendocrine neoplasms (PanNENs): Opportunities for personalized therapies. Cancer 2020; 127:345-353. [PMID: 33270905 DOI: 10.1002/cncr.33354] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 11/08/2020] [Accepted: 11/10/2020] [Indexed: 02/06/2023]
Abstract
Pancreatic neuroendocrine neoplasms (panNENs) are the second most common epithelial tumors of the pancreas. Despite improvements in prognostic grading and staging systems, it remains a challenge to predict the clinical behavior of panNENs and the response to specific therapies given the high degree of heterogeneity of these tumors. Most panNENs are nonfunctional and present as advanced disease. However, systemic therapies provide modest benefits. Therefore, there is a need for predictive biomarkers to develop personalized treatment and to advance new drug development. The somatostatin receptors remain the only clinically established prognostic and predictive biomarkers in panNENs. Oncogenic drivers are at a very low frequency. Commonly mutated genes in panNENs include MEN1, chromatin remodeling genes (DAXX and ATRX), and mammalian target of rapamycin pathway genes. In contrast, poorly differentiated neuroendocrine carcinomas (panNECs), which carry a very poor prognosis, have distinctive mutations in certain genes (eg, RB1 and p53). Ongoing research to integrate epigenomics will provide tremendous opportunities to improve current understanding of the clinical heterogeneity of pancreatic neuroendocrine tumors and provide invaluable insight into the biology of these tumors, new drug development, and establishing personalized therapies.
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Affiliation(s)
- Jemma Arakelyan
- Department of Oncology, Yerevan State Medical University, Yerevan, Armenia.,Adult Solid Tumor Chemotherapy Clinic, Professor Yeolan Hematology Center, Yerevan, Armenia
| | - Davit Zohrabyan
- Department of Oncology, Yerevan State Medical University, Yerevan, Armenia.,Adult Solid Tumor Chemotherapy Clinic, Professor Yeolan Hematology Center, Yerevan, Armenia
| | - Philip A Philip
- Department of Oncology, Yerevan State Medical University, Yerevan, Armenia.,Department of Oncology, School of Medicine, Wayne State University, Detroit, Michigan.,Department of Pharmacology, School of Medicine, Wayne State University, Detroit, Michigan.,Barbara Ann Karmanos Cancer Center, Detroit, Michigan
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5
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Monazzam A, Li SC, Wargelius H, Razmara M, Bajic D, Mi J, Bergquist J, Crona J, Skogseid B. Generation and characterization of CRISPR/Cas9-mediated MEN1 knockout BON1 cells: a human pancreatic neuroendocrine cell line. Sci Rep 2020; 10:14572. [PMID: 32884006 PMCID: PMC7471701 DOI: 10.1038/s41598-020-71516-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 08/17/2020] [Indexed: 11/21/2022] Open
Abstract
Among patients with the rare diagnosis of pancreatic neuroendocrine tumor (P-NET), a substantial proportion suffer from the inherited cancer syndrome multiple endocrine neoplasia type 1 (MEN1), which is caused by germline mutations of the MEN1 suppressor gene. Somatic mutations and loss of the MEN1 protein (menin) are frequently also found in sporadic P-NETs. Thus, a human neuroendocrine pancreatic cell line with biallelic inactivation of MEN1 might be of value for studying tumorigenesis. We used the polyclonal human P-NET cell line BON1, which expresses menin, serotonin, chromogranin A and neurotensin, to generate a monoclonal stable MEN1 knockout BON1 cell line (MEN1-KO-BON1) by CRISPR/Cas9 editing. Changes in morphology, hormone secretion, and proliferation were analyzed, and proteomics were assessed using nanoLC-MS/MS and Ingenuity Pathway Analysis (IPA). The menin-lacking MEN1-KO-BON1 cells had increased chromogranin A production and were smaller, more homogenous, rounder and grew faster than their control counterparts. Proteomic analysis revealed 457 significantly altered proteins, and IPA identified biological functions related to cancer, e.g., posttranslational modification and cell death/survival. Among 39 proteins with at least a two-fold difference in expression, twelve are relevant in glucose homeostasis and insulin resistance. The stable monoclonal MEN1-KO-BON1 cell line was found to have preserved neuroendocrine differentiation, increased proliferation, and an altered protein profile.
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Affiliation(s)
- Azita Monazzam
- Department of Medical Sciences, University Hospital, Uppsala University, 751 85, Uppsala, Sweden
| | - Su-Chen Li
- Department of Medical Sciences, University Hospital, Uppsala University, 751 85, Uppsala, Sweden
| | - Hanna Wargelius
- Department of Medical Sciences, University Hospital, Uppsala University, 751 85, Uppsala, Sweden
| | - Masoud Razmara
- Department of Medical Sciences, University Hospital, Uppsala University, 751 85, Uppsala, Sweden
| | - Duska Bajic
- Department of Medical Sciences, University Hospital, Uppsala University, 751 85, Uppsala, Sweden
| | - Jia Mi
- Precision Medicine, BinZhou Medical University, Yantai, China
| | - Jonas Bergquist
- Precision Medicine, BinZhou Medical University, Yantai, China.,Department of Chemistry - BMC, Analytical Chemistry and Neurochemistry, Uppsala University, Uppsala, Sweden
| | - Joakim Crona
- Department of Medical Sciences, University Hospital, Uppsala University, 751 85, Uppsala, Sweden
| | - Britt Skogseid
- Department of Medical Sciences, University Hospital, Uppsala University, 751 85, Uppsala, Sweden.
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6
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Kim JE, Lee DS, Kim TH, Park H, Kim MJ, Kang TC. PLPP/CIN-mediated Mdm2 dephosphorylation increases seizure susceptibility via abrogating PSD95 ubiquitination. Exp Neurol 2020; 331:113383. [DOI: 10.1016/j.expneurol.2020.113383] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Revised: 06/11/2020] [Accepted: 06/14/2020] [Indexed: 01/29/2023]
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7
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Kit OI, Gvaldin DY, Trifanov VS, Kolesnikov EN, Timoshkina NN. Molecular-Genetic Features of Pancreatic Neuroendocrine Tumors. RUSS J GENET+ 2020. [DOI: 10.1134/s1022795420020064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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8
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Sahni S, Park KC, Kovacevic Z, Richardson DR. Two mechanisms involving the autophagic and proteasomal pathways process the metastasis suppressor protein, N-myc downstream regulated gene 1. Biochim Biophys Acta Mol Basis Dis 2019; 1865:1361-1378. [PMID: 30763642 DOI: 10.1016/j.bbadis.2019.02.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 01/25/2019] [Accepted: 02/08/2019] [Indexed: 12/13/2022]
Abstract
N-myc downstream regulated gene 1 (NDRG1) is an intriguing metastasis suppressor protein, which plays an important role in suppressing multiple oncogenic signaling pathways. Interestingly, multiple isoforms of NDRG1 have been identified, although the molecular mechanisms involved in their generation remains elusive. Herein, we demonstrate the role of two mechanisms involving autophagic and proteasomal machinery as part of an intricate system to generate different NDRG1 isoforms. Examining multiple pancreatic cancer cell-types using immunoblotting demonstrated three major isoforms of NDRG1 at approximately 41-, 46- and 47-kDa. The top NDRG1 band at 47-kDa was shown to be processed by the proteasome, followed by autophagic metabolism of the middle NDRG1 band at 46-kDa. The role of the proteasomal and autophagic pathways in NDRG1 processing was further confirmed by co-localization analysis of confocal images using PSMD9 and LC3 as classical markers of these respective pathways. All NDRG1 isoforms were demonstrated to be, at least in part, phosphorylated forms of the protein. Inhibition of two well-characterized upstream kinases of NDRG1, namely GSK3β and SGK1, resulted in decreased levels of the top NDRG1 band. Studies demonstrated that inhibition of GSK3β decreased levels of the top 47-kDa NDRG1 band, independent of its kinase activity, and this effect was not mediated via the proteasomal pathway. In contrast, the decrease in the top NDRG1 band at 47-kDa after SGK1 inhibition, was due to suppression of its kinase activity. Overall, these studies elucidated the complex and intricate regulatory pathways involving both proteasomal and autophagic processing of the metastasis suppressor protein, NDRG1.
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Affiliation(s)
- Sumit Sahni
- Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, Medical Foundation Building (K25), University of Sydney, Sydney, New South Wales 2006, Australia.
| | - Kyung Chan Park
- Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, Medical Foundation Building (K25), University of Sydney, Sydney, New South Wales 2006, Australia
| | - Zaklina Kovacevic
- Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, Medical Foundation Building (K25), University of Sydney, Sydney, New South Wales 2006, Australia
| | - Des R Richardson
- Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, Medical Foundation Building (K25), University of Sydney, Sydney, New South Wales 2006, Australia; Department of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan.
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