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Kieliszek AM, Mobilio D, Upreti D, Bloemberg D, Escudero L, Kwiecien JM, Alizada Z, Zhai K, Ang P, Chafe SC, Vora P, Venugopal C, Singh SK. Intratumoral Delivery of Chimeric Antigen Receptor T Cells Targeting CD133 Effectively Treats Brain Metastases. Clin Cancer Res 2024; 30:554-563. [PMID: 37787999 DOI: 10.1158/1078-0432.ccr-23-1735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 08/18/2023] [Accepted: 09/29/2023] [Indexed: 10/04/2023]
Abstract
PURPOSE Brain metastases (BM) are mainly treated palliatively with an expected survival of less than 12 months after diagnosis. In many solid tumors, the human neural stem cell marker glycoprotein CD133 is a marker of a tumor-initiating cell population that contributes to therapy resistance, relapse, and metastasis. EXPERIMENTAL DESIGN Here, we use a variant of our previously described CD133 binder to generate second-generation CD133-specific chimeric antigen receptor T cells (CAR-T) to demonstrate its specificity and efficacy against multiple patient-derived BM cell lines with variable CD133 antigen expression. RESULTS Using both lung- and colon-BM patient-derived xenograft models, we show that a CD133-targeting CAR-T cell therapy can evoke significant tumor reduction and survival advantage after a single dose, with complete remission observed in the colon-BM model. CONCLUSIONS In summary, these data suggest that CD133 plays a critical role in fueling the growth of BM, and immunotherapeutic targeting of this cell population is a feasible strategy to control the outgrowth of BM tumors that are otherwise limited to palliative care. See related commentary by Sloan et al., p. 477.
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Affiliation(s)
- Agata M Kieliszek
- Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, Ontario, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Daniel Mobilio
- Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, Ontario, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | | | | | - Laura Escudero
- Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, Ontario, Canada
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Jacek M Kwiecien
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Zahra Alizada
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Kui Zhai
- Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, Ontario, Canada
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Patrick Ang
- Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, Ontario, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Shawn C Chafe
- Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, Ontario, Canada
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Parvez Vora
- Century Therapeutics, Hamilton, Ontario, Canada
| | - Chitra Venugopal
- Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, Ontario, Canada
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Sheila K Singh
- Centre for Discovery in Cancer Research (CDCR), McMaster University, Hamilton, Ontario, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada
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Guo Q, Liu XL, Zhai K, Chen C, Ke XX, Zhang J, Xu G. The Emerging Roles and Mechanisms of PAQR3 in Human Cancer: Pathophysiology and Therapeutic Implications. Int J Gen Med 2023; 16:4321-4328. [PMID: 37767187 PMCID: PMC10521929 DOI: 10.2147/ijgm.s422523] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 07/13/2023] [Indexed: 09/29/2023] Open
Abstract
Cancer was one of the common causes of death in the world, and it was increasing year by year. At present, Progestin and AdipoQ receptor family member 3 (PAQR3) was widely studied in cancer. It has been found that PAQR3 was down regulated in various cancers, such as the gastric cancer, osteosarcoma, glioma, hepatocellular carcinoma, acute lymphoblastic leukemia, laryngeal squamous cell carcinoma, esophageal cancer, breast cancer, non-small cell lung cancer, and colorectal cancer. The decreased expression of PAQR3 was associated with short overall survival and disease-free survival in patients with gastric cancer, hepatocellular carcinoma, laryngeal squamous cell carcinoma, esophageal cancer, breast cancer, and non-small cell lung cancer. PAQR3 could inhibit cancer progression by using the Ras/Raf/MEK/ERK, PI3/AKT, EMT and other mechanisms, and was negatively regulated by the miR-543, miR-15b-5p and miR-15b. The roles and signaling mechanisms of PAQR3, and the relationship between the expression of PAQR3 and prognosis in cancer progression are reviewed in this article, and provides new tumor marker and idea to guide cancer treatment.
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Affiliation(s)
- Qiang Guo
- Department of Thoracic Surgery, The Second Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, People’s Republic of China
- Department of Cardiothoracic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, People’s Republic of China
| | - Xiao-Li Liu
- Department of Ultrasound, The People’s Hospital of Jianyang City, Jianyang, Sichuan, People’s Republic of China
| | - Kui Zhai
- Department of Thoracic Surgery, Xingyi People’s Hospital, Xinyi, Guizhou, People’s Republic of China
| | - Cheng Chen
- Department of Thoracic Surgery, The Second Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, People’s Republic of China
| | - Xi-Xian Ke
- Department of Thoracic Surgery, The Second Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, People’s Republic of China
| | - Jun Zhang
- Department of Cardiothoracic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, People’s Republic of China
| | - Gang Xu
- Department of Thoracic Surgery, The Second Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, People’s Republic of China
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Huang Q, Liu L, Xiao D, Huang Z, Wang W, Zhai K, Fang X, Kim J, Liu J, Liang W, He J, Bao S. CD44 + lung cancer stem cell-derived pericyte-like cells cause brain metastases through GPR124-enhanced trans-endothelial migration. Cancer Cell 2023; 41:1621-1636.e8. [PMID: 37595587 DOI: 10.1016/j.ccell.2023.07.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 06/07/2023] [Accepted: 07/28/2023] [Indexed: 08/20/2023]
Abstract
Brain metastasis of lung cancer causes high mortality, but the exact mechanisms underlying the metastasis remain unclear. Here we report that vascular pericytes derived from CD44+ lung cancer stem cells (CSCs) in lung adenocarcinoma (ADC) potently cause brain metastases through the G-protein-coupled receptor 124 (GPR124)-enhanced trans-endothelial migration (TEM). CD44+ CSCs in perivascular niches generate the majority of vascular pericytes in lung ADC. CSC-derived pericyte-like cells (Cd-pericytes) exhibit remarkable TEM capacity to effectively intravasate into the vessel lumina, survive in the circulation, extravasate into the brain parenchyma, and then de-differentiate into tumorigenic CSCs to form metastases. Cd-pericytes uniquely express GPR124 that activates Wnt7-β-catenin signaling to enhance TEM capacity of Cd-pericytes for intravasation and extravasation, two critical steps during tumor metastasis. Furthermore, selective disruption of Cd-pericytes, GPR124, or the Wnt7-β-catenin signaling markedly reduces brain and liver metastases of lung ADC. Our findings uncover an unappreciated cellular and molecular paradigm driving tumor metastasis.
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Affiliation(s)
- Qian Huang
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Liping Liu
- Department of Thoracic Surgery, the First Affiliated Hospital of Guangzhou Medical University, the State Key Laboratory of Respiratory Disease, and the National Clinical Research Centre for Respiratory Disease, Guangzhou 510120, China
| | - Dakai Xiao
- Department of Thoracic Surgery, the First Affiliated Hospital of Guangzhou Medical University, the State Key Laboratory of Respiratory Disease, and the National Clinical Research Centre for Respiratory Disease, Guangzhou 510120, China
| | - Zhi Huang
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Wenjun Wang
- Department of Thoracic Surgery, the First Affiliated Hospital of Guangzhou Medical University, the State Key Laboratory of Respiratory Disease, and the National Clinical Research Centre for Respiratory Disease, Guangzhou 510120, China
| | - Kui Zhai
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Xiaoguang Fang
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Jongmyung Kim
- Department of Neuro-Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - James Liu
- Department of Neuro-Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Wenhua Liang
- Department of Thoracic Surgery, the First Affiliated Hospital of Guangzhou Medical University, the State Key Laboratory of Respiratory Disease, and the National Clinical Research Centre for Respiratory Disease, Guangzhou 510120, China
| | - Jianxing He
- Department of Thoracic Surgery, the First Affiliated Hospital of Guangzhou Medical University, the State Key Laboratory of Respiratory Disease, and the National Clinical Research Centre for Respiratory Disease, Guangzhou 510120, China.
| | - Shideng Bao
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA; Center for Cancer Stem Cell Research, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA.
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Tao W, Lei H, Luo W, Huang Z, Ling P, Guo M, Wan L, Zhai K, Huang Q, Wu Q, Xu S, Zeng L, Wang X, Dong Z, Rich JN, Bao S. Novel INHAT repressor drives glioblastoma growth by promoting ribosomal DNA transcription in glioma stem cells. Neuro Oncol 2023; 25:1428-1440. [PMID: 36521011 PMCID: PMC10398814 DOI: 10.1093/neuonc/noac272] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2023] Open
Abstract
BACKGROUND Cancer cells including cancer stem cells exhibit a higher rate of ribosome biogenesis than normal cells to support rapid cell proliferation in tumors. However, the molecular mechanisms governing the preferential ribosome biogenesis in glioma stem cells (GSCs) remain unclear. In this work, we show that the novel INHAT repressor (NIR) promotes ribosomal DNA (rDNA) transcription to support GSC proliferation and glioblastoma (GBM) growth, suggesting that NIR is a potential therapeutic target for GBM. METHODS Immunoblotting, immunohistochemical and immunofluorescent analysis were used to determine NIR expression in GSCs and human GBMs. Using shRNA-mediated knockdown, we assessed the role and functional significance of NIR in GSCs and GSC-derived orthotopic GBM xenografts. We further performed mass spectrometry analysis, chromatin immunoprecipitation, and other biochemical assays to define the molecular mechanisms by which NIR promotes GBM progression. RESULTS Our results show that high expression of NIR predicts poor survival in GBM patients. NIR is enriched in the nucleoli of GSCs in human GBMs. Disrupting NIR markedly suppresses GSC proliferation and tumor growth by inhibiting rDNA transcription and pre-ribosomal RNA synthesis. In mechanistic studies, we find that NIR activates rDNA transcription to promote GSC proliferation by cooperating with Nucleolin (NCL) and Nucleophosmin 1 (NPM1), 2 important nucleolar transcription factors. CONCLUSIONS Our study uncovers a critical role of NIR-mediated rDNA transcription in the malignant progression of GBM, indicating that targeting this axis may provide a novel therapeutic strategy for GBM.
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Affiliation(s)
- Weiwei Tao
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
- College of Biomedicine and Health and College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Hong Lei
- College of Biomedicine and Health and College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Wenlong Luo
- College of Biomedicine and Health and College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Zhi Huang
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Peng Ling
- College of Biomedicine and Health and College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Mengyue Guo
- College of Biomedicine and Health and College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Lihao Wan
- College of Biomedicine and Health and College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Kui Zhai
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Qian Huang
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Qiulian Wu
- Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Shutong Xu
- College of Biomedicine and Health and College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Liang Zeng
- Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Xiuxing Wang
- Department of Cell Biology, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Zhiqiang Dong
- College of Biomedicine and Health and College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Jeremy N Rich
- Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Shideng Bao
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
- Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
- Center for Cancer Stem Cell Research, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA)
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5
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Zhai K, Jiang N, Wen JF, Zhang X, Liu T, Long KJ, Ke XX, Xu G, Chen C. Overexpression of TWF1 promotes lung adenocarcinoma progression and is associated with poor prognosis in cancer patients through the MMP1 signaling pathway. J Thorac Dis 2023; 15:2644-2658. [PMID: 37324107 PMCID: PMC10267903 DOI: 10.21037/jtd-23-395] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 05/10/2023] [Indexed: 06/17/2023]
Abstract
Background It has been reported that twinfilin actin binding protein 1 (TWF1) is associated with the progression of breast and pancreatic cancers. However, the roles and mechanisms of TWF1 in lung adenocarcinoma (LUAD) have not been reported. Methods The expression levels of TWF1 in LUAD and normal tissues were analyzed using The Cancer Genome Atlas (TCGA) database, and validation was carried out with 12 clinical samples. The relationship between TWF1 expression and LUAD patients' clinical indices and immunity was investigated. Cell Counting Kit-8 (CCK-8) and migration and invasion assays were employed to explore the effects of downregulated TWF1 on LUAD cell proliferation and metastasis. Results TWF1 was upregulated in LUAD tissues, and upregulated TWF1 was correlated with the tumor (T) stage, node (N) stage, clinical classification, overall survival (OS), and progression-free interval (PFI) of LUAD patients. Moreover, the Cox regression analysis showed that TWF1 overexpression was an independent risk factor for the poor prognosis of LUAD patients. TWF1 expression was associated with tumor immune infiltration (such as dendritic cells resting, eosinophils, macrophages M0, and others), drug sensitivity (such as A-770041, Bleomycin, and BEZ235), tumor mutation burden (TMB), and sensitivity to immunotherapy. In the cell model, TWF1 expression interference significantly prohibited LUAD cell proliferation, migration, and invasion, which might be relevant to aberrant MMP1 protein downregulation. Conclusions TWF1 overexpression was correlated with poor prognoses and immune status of LUAD patients. Inhibited TWF1 expression delayed the growth and migration of cancer cells by downregulating MMP protein, implying that TWF1 is a promising biomarker for the prognoses of LUAD patients.
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Affiliation(s)
- Kui Zhai
- Department of Thoracic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Ni Jiang
- Department of Obstetrics and Gynecology, Women and Children’s Hospital of Chongqing Medical University, Chongqing, China
| | - Ji-Fan Wen
- Department of Thoracic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Xiao Zhang
- Department of Thoracic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Tao Liu
- Department of Thoracic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Kai-Jun Long
- Department of Thoracic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Xi-Xian Ke
- Department of Thoracic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Gang Xu
- Department of Thoracic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Cheng Chen
- Department of Thoracic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, China
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6
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Gwynne WD, Suk Y, Custers S, Mikolajewicz N, Chan JK, Zador Z, Chafe SC, Zhai K, Escudero L, Zhang C, Zaslaver O, Chokshi C, Shaikh MV, Bakhshinyan D, Burns I, Chaudhry I, Nachmani O, Mobilio D, Maich WT, Mero P, Brown KR, Quaile AT, Venugopal C, Moffat J, Montenegro-Burke JR, Singh SK. Cancer-selective metabolic vulnerabilities in MYC-amplified medulloblastoma. Cancer Cell 2022; 40:1488-1502.e7. [PMID: 36368321 DOI: 10.1016/j.ccell.2022.10.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 09/09/2022] [Accepted: 10/06/2022] [Indexed: 11/12/2022]
Abstract
MYC-driven medulloblastoma (MB) is an aggressive pediatric brain tumor characterized by therapy resistance and disease recurrence. Here, we integrated data from unbiased genetic screening and metabolomic profiling to identify multiple cancer-selective metabolic vulnerabilities in MYC-driven MB tumor cells, which are amenable to therapeutic targeting. Among these targets, dihydroorotate dehydrogenase (DHODH), an enzyme that catalyzes de novo pyrimidine biosynthesis, emerged as a favorable candidate for therapeutic targeting. Mechanistically, DHODH inhibition acts on target, leading to uridine metabolite scarcity and hyperlipidemia, accompanied by reduced protein O-GlcNAcylation and c-Myc degradation. Pyrimidine starvation evokes a metabolic stress response that leads to cell-cycle arrest and apoptosis. We further show that an orally available small-molecule DHODH inhibitor demonstrates potent mono-therapeutic efficacy against patient-derived MB xenografts in vivo. The reprogramming of pyrimidine metabolism in MYC-driven medulloblastoma represents an unappreciated therapeutic strategy and a potential new class of treatments with stronger cancer selectivity and fewer neurotoxic sequelae.
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Affiliation(s)
- William D Gwynne
- Department of Surgery, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Center for Discovery in Cancer Research (CDCR), McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Yujin Suk
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Michael G DeGroote School of Medicine, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Center for Discovery in Cancer Research (CDCR), McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Stefan Custers
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Center for Discovery in Cancer Research (CDCR), McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Nicholas Mikolajewicz
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College St, Toronto, ON M5S 3E1, Canada
| | - Jeremy K Chan
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College St, Toronto, ON M5S 3E1, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Zsolt Zador
- Department of Surgery, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Center for Discovery in Cancer Research (CDCR), McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Shawn C Chafe
- Department of Surgery, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Center for Discovery in Cancer Research (CDCR), McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Kui Zhai
- Department of Surgery, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Center for Discovery in Cancer Research (CDCR), McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Laura Escudero
- Department of Surgery, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Center for Discovery in Cancer Research (CDCR), McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Cunjie Zhang
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College St, Toronto, ON M5S 3E1, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Olga Zaslaver
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College St, Toronto, ON M5S 3E1, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Chirayu Chokshi
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Muhammad Vaseem Shaikh
- Department of Surgery, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Center for Discovery in Cancer Research (CDCR), McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - David Bakhshinyan
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Ian Burns
- Michael G DeGroote School of Medicine, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Iqra Chaudhry
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Center for Discovery in Cancer Research (CDCR), McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Omri Nachmani
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College St, Toronto, ON M5S 3E1, Canada
| | - Daniel Mobilio
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Center for Discovery in Cancer Research (CDCR), McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - William T Maich
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Center for Discovery in Cancer Research (CDCR), McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Patricia Mero
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College St, Toronto, ON M5S 3E1, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Kevin R Brown
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College St, Toronto, ON M5S 3E1, Canada
| | - Andrew T Quaile
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College St, Toronto, ON M5S 3E1, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Chitra Venugopal
- Department of Surgery, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Center for Discovery in Cancer Research (CDCR), McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Jason Moffat
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College St, Toronto, ON M5S 3E1, Canada; Institute for Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - J Rafael Montenegro-Burke
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College St, Toronto, ON M5S 3E1, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada.
| | - Sheila K Singh
- Department of Surgery, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada; Center for Discovery in Cancer Research (CDCR), McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada.
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7
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Tatari N, Khan S, Livingstone J, Zhai K, Mckenna D, Ignatchenko V, Chokshi C, Gwynne WD, Singh M, Revill S, Mikolajewicz N, Zhu C, Chan J, Hawkins C, Lu JQ, Provias JP, Ask K, Morrissy S, Brown S, Weiss T, Weller M, Han H, Greenspoon JN, Moffat J, Venugopal C, Boutros PC, Singh SK, Kislinger T. The proteomic landscape of glioblastoma recurrence reveals novel and targetable immunoregulatory drivers. Acta Neuropathol 2022; 144:1127-1142. [PMID: 36178522 PMCID: PMC10187978 DOI: 10.1007/s00401-022-02506-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 09/23/2022] [Accepted: 09/24/2022] [Indexed: 01/26/2023]
Abstract
Glioblastoma (GBM) is characterized by extensive cellular and genetic heterogeneity. Its initial presentation as primary disease (pGBM) has been subject to exhaustive molecular and cellular profiling. By contrast, our understanding of how GBM evolves to evade the selective pressure of therapy is starkly limited. The proteomic landscape of recurrent GBM (rGBM), which is refractory to most treatments used for pGBM, are poorly known. We, therefore, quantified the transcriptome and proteome of 134 patient-derived pGBM and rGBM samples, including 40 matched pGBM-rGBM pairs. GBM subtypes transition from pGBM to rGBM towards a preferentially mesenchymal state at recurrence, consistent with the increasingly invasive nature of rGBM. We identified immune regulatory/suppressive genes as important drivers of rGBM and in particular 2-5-oligoadenylate synthase 2 (OAS2) as an essential gene in recurrent disease. Our data identify a new class of therapeutic targets that emerge from the adaptive response of pGBM to therapy, emerging specifically in recurrent disease and may provide new therapeutic opportunities absent at pGBM diagnosis.
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Affiliation(s)
- Nazanin Tatari
- Centre for Discovery in Cancer Research, Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Shahbaz Khan
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Julie Livingstone
- Department of Human Genetics and Jonsson Comprehensive Cancer Center, University of California, Los Angeles, CA, USA
| | - Kui Zhai
- Department of Surgery, McMaster University, Hamilton, ON, Canada
| | - Dillon Mckenna
- Department of Surgery, McMaster University, Hamilton, ON, Canada
| | | | - Chirayu Chokshi
- Centre for Discovery in Cancer Research, Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - William D Gwynne
- Centre for Discovery in Cancer Research, Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Manoj Singh
- Centre for Discovery in Cancer Research, Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada.,Department of Surgery, McMaster University, Hamilton, ON, Canada
| | - Spencer Revill
- McMaster Immunology Research Centre, McMaster University, Hamilton, ON, Canada
| | - Nicholas Mikolajewicz
- Department of Molecular Genetics - Donnelly Centre, University of Toronto, Toronto, ON, Canada
| | - Chenghao Zhu
- Department of Human Genetics and Jonsson Comprehensive Cancer Center, University of California, Los Angeles, CA, USA
| | - Jennifer Chan
- Department of Pathology and Laboratory Medicine, University of Calgary, Calgary, AB, Canada
| | - Cynthia Hawkins
- Department of Pediatric Laboratory Medicine, Hospital for Sick Children, Toronto, Canada
| | - Jian-Qiang Lu
- Department of Pathology, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - John P Provias
- Department of Pathology, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Kjetil Ask
- McMaster Immunology Research Centre, McMaster University, Hamilton, ON, Canada
| | - Sorana Morrissy
- Department of Biochemistry and Molecular Biology, The University of Calgary, Calgary, AB, Canada
| | - Samuel Brown
- Department of Biochemistry and Molecular Biology, The University of Calgary, Calgary, AB, Canada
| | - Tobias Weiss
- Department of Neurology and Clinical Neuroscience Center, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Michael Weller
- Department of Neurology and Clinical Neuroscience Center, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Hong Han
- Department of Molecular Genetics - Donnelly Centre, University of Toronto, Toronto, ON, Canada
| | - Jeffrey N Greenspoon
- Juravinski Cancer Center, Department of Oncology, Radiation Oncology, McMaster University, Hamilton, ON, Canada
| | - Jason Moffat
- Department of Molecular Genetics - Donnelly Centre, University of Toronto, Toronto, ON, Canada
| | - Chitra Venugopal
- Department of Surgery, McMaster University, Hamilton, ON, Canada
| | - Paul C Boutros
- Department of Human Genetics and Jonsson Comprehensive Cancer Center, University of California, Los Angeles, CA, USA. .,Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada.
| | - Sheila K Singh
- Centre for Discovery in Cancer Research, Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada. .,Department of Surgery, McMaster University, Hamilton, ON, Canada.
| | - Thomas Kislinger
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada. .,Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada.
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8
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Li D, Liu X, Jiang N, Ke D, Guo Q, Zhai K, Han H, Xiao X, Fan T. Interfering with ITGB1-DT expression delays cancer progression and promotes cell sensitivity of NSCLC to cisplatin by inhibiting the MAPK/ERK pathway. Am J Cancer Res 2022; 12:2966-2988. [PMID: 35968342 PMCID: PMC9360236] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 05/03/2022] [Indexed: 06/15/2023] Open
Abstract
Long non-coding RNA ITGB1-DT is involved in the regulation of cancer growth and metastasis. However, the roles of ITGB1-DT in non-small cell lung cancer (NSCLC) progression and sensitivity to cisplatin has not been elucidated. ITGB1-DT expression in NSCLC tissues, and the relationship between ITGB1-DT expression with NSCLC diagnosis, prognosis, clinicopathological features, and immune cell infiltration were investigated in The Cancer Gene Atlas (TCGA) database. The roles and mechanisms of ITGB1-DT in cell growth, migration, and drug sensitivity of NSCLC cells were explored in the cell model. The prognostic nomograms of ITGB1-DT-related genes were evaluated using bioinformatics. ITGB1-DT was overexpressed in NSCLC. Elevated ITGB1-DT expression was related to the late T stage, N stage, M stage, short overall survival (OS), disease-specific survival (DSS), and progression-free interval (PFI) of NSCLC patients. ITGB1-DT was the independent risk factors for poor prognosis, and had diagnostic value for NSCLC patients. Interfering with the ITGB1-DT expression can inhibit the proliferation, migration, and invasion of A549, H1299, and drug-resistant A549/DDP, possibly due to the inhibition of p38 MAPK and ERK phosphorylation levels. ITGB1-DT expression was correlated with the levels of NSCLC immune infiltration cells, such as the TReg, Th, and NK cells. ITGB1-DT-related gene nomograms were associated with the prognosis, and were expected to evaluate the prognosis of NSCLC patients. In conclusion, inhibition of ITGB1-DT expression delayed the growth and metastasis of NSCLC using the MAPK/ERK signaling mechanism and enhanced the sensitivity of NSCLC to cisplatin drugs. These results indicate that ITGB1-DT might be a biomarker for evaluating the diagnosis and prognosis of NSCLC patients.
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Affiliation(s)
- Dan Li
- Department of General Medicine, Affiliated Hospital of Zunyi Medical UniversityZunyi 563003, Guizhou, China
- Department of Oncology, Huanggang Central HospitalHuanggang 438000, Hubei, China
| | - Xiaoli Liu
- Department of General Medicine, Affiliated Hospital of Zunyi Medical UniversityZunyi 563003, Guizhou, China
- Department of Ultrasound, The Peoples’ Hospital of Jianyang CityJianyang 641400, Sichuan, China
| | - Ni Jiang
- Cancer Laboratory, Affiliated Hospital of Zunyi Medical UniversityZunyi 563003, Guizhou, China
| | - Di Ke
- Department of General Medicine, Affiliated Hospital of Zunyi Medical UniversityZunyi 563003, Guizhou, China
- Department of Radiology, Affiliated Hospital of Zunyi Medical UniversityZunyi 563003, Guizhou, China
| | - Qiang Guo
- Department of Thoracic Surgery, Affiliated Hospital of Zunyi Medical UniversityZunyi 563003, Guizhou, China
| | - Kui Zhai
- Department of Thoracic Surgery, Affiliated Hospital of Zunyi Medical UniversityZunyi 563003, Guizhou, China
| | - Hao Han
- Department of Thoracic Surgery, Affiliated Hospital of Zunyi Medical UniversityZunyi 563003, Guizhou, China
| | - Xue Xiao
- Department of General Medicine, Affiliated Hospital of Zunyi Medical UniversityZunyi 563003, Guizhou, China
| | - Tengyang Fan
- Department of General Medicine, Affiliated Hospital of Zunyi Medical UniversityZunyi 563003, Guizhou, China
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9
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Bi Y, Yang Z, Jin M, Zhai K, Wang J, Mao Y, Liu Y, Ding M, Wang H, Wang F, Cai H, Ji G. ERp44 is required for endocardial cushion development by regulating VEGFA secretion in myocardium. Cell Prolif 2022; 55:e13179. [PMID: 35088919 PMCID: PMC8891561 DOI: 10.1111/cpr.13179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 12/22/2021] [Indexed: 11/29/2022] Open
Abstract
OBJECTIVES Endocardial cushions are precursors of the valve septum complex that separates the four heart chambers. Several genes have been implicated in the development of endocardial cushions. Specifically, ERp44 has been found to play a role in the early secretory pathway, but its function in heart development has not been well studied. MATERIALS AND METHODS In this study, we established conditional and tissue-specific knockout mouse models. The morphology, survival rate, the development of heart and endocardial cushion were under evaluation. The relationship between ERp44 and VEGFA was investigated by transcriptome, qPCR, WB, immunofluorescence and immunohistochemistry. RESULTS ERp44 knockout (KO) mice were smaller in size, and most mice died during early postnatal life. KO hearts exhibited the typical phenotypes of congenital heart diseases, such as abnormal heart shapes and severe septal and valvular defects. Similar phenotypes were found in cTNT-Cre+/- ; ERp44fl / fl mice, which indicated that myocardial ERp44 principally controls endocardial cushion formation. Further studies demonstrated that the deletion of ERp44 significantly decreased the proliferation of cushion cells and impaired the endocardial-mesenchymal transition (EndMT), which was followed by endocardial cushion dysplasia. Finally, we found that ERp44 was directly bound to VEGFA and controlled its release, further regulating EndMT. CONCLUSION We demonstrated that ERp44 plays a specific role in heart development. ERp44 contributes to the development of the endocardial cushion by affecting VEGFA-mediated EndMT.
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Affiliation(s)
- Youkun Bi
- Key Laboratory of Interdisciplinary ResearchInstitute of BiophysicsChinese Academy of SciencesBeijingChina
- University of Chinese Academy of SciencesBeijingChina
| | - Zhiguang Yang
- Key Laboratory of Interdisciplinary ResearchInstitute of BiophysicsChinese Academy of SciencesBeijingChina
- University of Chinese Academy of SciencesBeijingChina
| | - Meng Jin
- Key Laboratory of Interdisciplinary ResearchInstitute of BiophysicsChinese Academy of SciencesBeijingChina
- University of Chinese Academy of SciencesBeijingChina
| | - Kui Zhai
- Key Laboratory of Interdisciplinary ResearchInstitute of BiophysicsChinese Academy of SciencesBeijingChina
- University of Chinese Academy of SciencesBeijingChina
| | - Jun Wang
- Key Laboratory of Interdisciplinary ResearchInstitute of BiophysicsChinese Academy of SciencesBeijingChina
- University of Chinese Academy of SciencesBeijingChina
| | - Yang Mao
- Key Laboratory of Interdisciplinary ResearchInstitute of BiophysicsChinese Academy of SciencesBeijingChina
- University of Chinese Academy of SciencesBeijingChina
| | - Yang Liu
- Key Laboratory of Interdisciplinary ResearchInstitute of BiophysicsChinese Academy of SciencesBeijingChina
- University of Chinese Academy of SciencesBeijingChina
| | - Mingqin Ding
- National Institute of Biological SciencesBeijingChina
| | - Huiwen Wang
- Key Laboratory of Interdisciplinary ResearchInstitute of BiophysicsChinese Academy of SciencesBeijingChina
| | - Fengchao Wang
- National Institute of Biological SciencesBeijingChina
| | - Hong Cai
- Department of DermatologyAir Force Medical CenterPLABeijingChina
| | - Guangju Ji
- Key Laboratory of Interdisciplinary ResearchInstitute of BiophysicsChinese Academy of SciencesBeijingChina
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10
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Zhang A, Huang Z, Tao W, Zhai K, Wu Q, Rich JN, Zhou W, Bao S. USP33 deubiquitinates and stabilizes HIF-2alpha to promote hypoxia response in glioma stem cells. EMBO J 2022; 41:e109187. [PMID: 35191554 PMCID: PMC8982626 DOI: 10.15252/embj.2021109187] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 01/13/2022] [Accepted: 01/17/2022] [Indexed: 12/17/2022] Open
Abstract
Hypoxia regulates tumor angiogenesis, metabolism, and therapeutic response in malignant cancers including glioblastoma, the most lethal primary brain tumor. The regulation of HIF transcriptional factors by the ubiquitin-proteasome system is critical in the hypoxia response, but hypoxia-inducible deubiquitinases that counteract the ubiquitination remain poorly defined. While the activation of ERK1/2 also plays an important role in hypoxia response, the relationship between ERK1/2 activation and HIF regulation remains elusive. Here, we identified USP33 as essential deubiquitinase that stabilizes HIF-2alpha protein in an ERK1/2-dependent manner to promote hypoxia response in cancer cells. USP33 is preferentially induced in glioma stem cells by hypoxia and interacts with HIF-2alpha, leading to its stabilization through deubiquitination. The activation of ERK1/2 upon hypoxia promoted HIF-2alpha phosphorylation, enhancing its interaction with USP33. Silencing of USP33 disrupted glioma stem cells maintenance, reduced tumor vascularization, and inhibited glioblastoma growth. Our findings highlight USP33 as an essential regulator of hypoxia response in cancer stem cells, indicating a novel potential therapeutic target for brain tumor treatment.
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Affiliation(s)
- Aili Zhang
- Department of Cancer BiologyLerner Research InstituteCleveland ClinicClevelandOHUSA
| | - Zhi Huang
- Department of Cancer BiologyLerner Research InstituteCleveland ClinicClevelandOHUSA
| | - Weiwei Tao
- Department of Cancer BiologyLerner Research InstituteCleveland ClinicClevelandOHUSA
| | - Kui Zhai
- Department of Cancer BiologyLerner Research InstituteCleveland ClinicClevelandOHUSA
| | - Qiulian Wu
- Hillman Cancer CenterUniversity of Pittsburgh Medical CenterPittsburghPAUSA
| | - Jeremy N Rich
- Hillman Cancer CenterUniversity of Pittsburgh Medical CenterPittsburghPAUSA
| | - Wenchao Zhou
- Department of Cancer BiologyLerner Research InstituteCleveland ClinicClevelandOHUSA
| | - Shideng Bao
- Department of Cancer BiologyLerner Research InstituteCleveland ClinicClevelandOHUSA,Case Comprehensive Cancer CenterCase Western Reserve University School of MedicineClevelandOHUSA,Center for Cancer Stem Cell ResearchLerner Research InstituteCleveland ClinicClevelandOHUSA
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11
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Fang X, Huang Z, Zhai K, Huang Q, Tao W, Kim L, Wu Q, Almasan A, Yu JS, Li X, Stark GR, Rich JN, Bao S. Inhibiting DNA-PK induces glioma stem cell differentiation and sensitizes glioblastoma to radiation in mice. Sci Transl Med 2021; 13:13/600/eabc7275. [PMID: 34193614 DOI: 10.1126/scitranslmed.abc7275] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 02/23/2021] [Accepted: 06/10/2021] [Indexed: 12/11/2022]
Abstract
Glioblastoma (GBM), a lethal primary brain tumor, contains glioma stem cells (GSCs) that promote malignant progression and therapeutic resistance. SOX2 is a core transcription factor that maintains the properties of stem cells, including GSCs, but mechanisms associated with posttranslational SOX2 regulation in GSCs remain elusive. Here, we report that DNA-dependent protein kinase (DNA-PK) governs SOX2 stability through phosphorylation, resulting in GSC maintenance. Mass spectrometric analyses of SOX2-binding proteins showed that DNA-PK interacted with SOX2 in GSCs. The DNA-PK catalytic subunit (DNA-PKcs) was preferentially expressed in GSCs compared to matched non-stem cell tumor cells (NSTCs) isolated from patient-derived GBM xenografts. DNA-PKcs phosphorylated human SOX2 at S251, which stabilized SOX2 by preventing WWP2-mediated ubiquitination, thus promoting GSC maintenance. We then demonstrated that when the nuclear DNA of GSCs either in vitro or in GBM xenografts in mice was damaged by irradiation or treatment with etoposide, the DNA-PK complex dissociated from SOX2, which then interacted with WWP2, leading to SOX2 degradation and GSC differentiation. These results suggest that DNA-PKcs-mediated phosphorylation of S251 was critical for SOX2 stabilization and GSC maintenance. Pharmacological inhibition of DNA-PKcs with the DNA-PKcs inhibitor NU7441 reduced GSC tumorsphere formation in vitro and impaired growth of intracranial human GBM xenografts in mice as well as sensitized the GBM xenografts to radiotherapy. Our findings suggest that DNA-PK maintains GSCs in a stem cell state and that DNA damage triggers GSC differentiation through precise regulation of SOX2 stability, highlighting that DNA-PKcs has potential as a therapeutic target in glioblastoma.
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Affiliation(s)
- Xiaoguang Fang
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Zhi Huang
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Kui Zhai
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Qian Huang
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Weiwei Tao
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Leo Kim
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA 92037, USA.,Department of Pathology, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Qiulian Wu
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA 92037, USA.,Division of Hematology Oncology, Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA 15261, USA
| | - Alexandru Almasan
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA.,Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA.,Department of Radiation Oncology, Cleveland Clinic, OH 44195, USA
| | - Jennifer S Yu
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA.,Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA.,Department of Radiation Oncology, Cleveland Clinic, OH 44195, USA
| | - Xiaoxia Li
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - George R Stark
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA.,Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Jeremy N Rich
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA 92037, USA.,Division of Hematology Oncology, Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA 15261, USA
| | - Shideng Bao
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA. .,Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA.,Center for Cancer Stem Cell Research, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
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12
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Bi Y, Chang Y, Liu Q, Mao Y, Zhai K, Zhou Y, Jiao R, Ji G. ERp44/CG9911 promotes fat storage in Drosophila adipocytes by regulating ER Ca 2+ homeostasis. Aging (Albany NY) 2021; 13:15013-15031. [PMID: 34031268 PMCID: PMC8221293 DOI: 10.18632/aging.203063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 03/27/2021] [Indexed: 12/12/2022]
Abstract
Fat storage is one of the important strategies employed in regulating energy homeostasis. Impaired lipid storage causes metabolic disorders in both mammals and Drosophila. In this study, we report CG9911, the Drosophila homolog of ERp44 (endoplasmic reticulum protein 44) plays a role in regulating adipose tissue fat storage. Using the CRISPR/Cas9 system, we generated a CG9911 mutant line deleting 5 bp of the coding sequence. The mutant flies exhibit phenotypes of lower bodyweight, fewer lipid droplets, reduced TAG level and increased expression of lipolysis related genes. The increased lipolysis phenotype is enhanced in the presence of ER stresses and suppressed by a reduction of the ER Ca2+. Moreover, loss of CG9911 per se results in a decrease of ER Ca2+ in the fat body. Together, our results reveal a novel function of CG9911 in promoting fat storage via regulating ER Ca2+ signal in Drosophila.
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Affiliation(s)
- Youkun Bi
- Key Laboratory of Interdisciplinary Research, Chinese Academy of Sciences, Beijing 100101, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yan Chang
- Key Laboratory of Interdisciplinary Research, Chinese Academy of Sciences, Beijing 100101, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qun Liu
- Key Laboratory of Interdisciplinary Research, Chinese Academy of Sciences, Beijing 100101, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yang Mao
- Key Laboratory of Interdisciplinary Research, Chinese Academy of Sciences, Beijing 100101, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Kui Zhai
- Key Laboratory of Interdisciplinary Research, Chinese Academy of Sciences, Beijing 100101, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuanli Zhou
- Key Laboratory of Protein and Peptide Pharmaceutical, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Renjie Jiao
- Key Laboratory of Interdisciplinary Research, Chinese Academy of Sciences, Beijing 100101, China.,Sino-French Hoffmann Institute, School of Basic Medical Science, Guangzhou Medical University, Guangzhou 510182, China
| | - Guangju Ji
- Key Laboratory of Interdisciplinary Research, Chinese Academy of Sciences, Beijing 100101, China
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13
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Chen C, Zhai K, Tang Y, Qu W, Zuo J, Ke X, Song Y. Thoracic endometriosis: a case report and review of the literature. Ann Palliat Med 2021; 10:3500-3503. [PMID: 33849132 DOI: 10.21037/apm-21-280] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 03/12/2021] [Indexed: 11/06/2022]
Abstract
Thoracic endometriosis is characterized by the presence of normal functioning endometrial tissues in normal pleural, diaphragm, or lung parenchyma, and main clinical symptoms include pneumothorax, menstrual hemothorax, menstrual hemoptysis, and pulmonary nodules. Chest X-ray (CXR), computed tomography (CT), magnetic resonance imaging (MRI), bronchoscopy, and surgical biopsy could be applied to the diagnosis of TE. Both drug therapy and surgical treatment were widely used to treat this disease, but no theory was used to guide the choice of treatment options. This paper introduces a case of menstrual hemoptysis due to endometriosis, and the final surgical treatment was chosen. The patient recovered well postoperatively and reported no hemoptysis during 2 months of follow-up. Reexamination of the chest through CT showed no ground-glass lesions or pulmonary exudative lesions. We make the following recommendations for patient selection when considering a surgical approach to the treatment of TE. Patients for whom surgery should be considered are those who (I) do not respond to drug therapy or relapse once drug therapy is withdrawn, (II) cannot tolerate drug therapy or who may wish to get pregnant in the near future (III) have limited lesions which are able to be completely removed during surgery. Patients in whom surgery is not recommended include those who have extensive lesions which cannot be surgically removed, including those with diaphragm or pleural involvement as the diseased tissues must be completely removed to avoid recurrence, and those who are unfit for surgery.
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Affiliation(s)
- Cheng Chen
- Department of Thoracic Surgery, The Affiliated Hospital of Zunyi Medical University, Guizhou, China
| | - Kui Zhai
- Department of Thoracic Surgery, The Affiliated Hospital of Zunyi Medical University, Guizhou, China
| | - Yang Tang
- Department of Thoracic Surgery, The Affiliated Hospital of Zunyi Medical University, Guizhou, China
| | - Wendong Qu
- Department of Thoracic Surgery, The Affiliated Hospital of Zunyi Medical University, Guizhou, China
| | - Jiebin Zuo
- Department of Thoracic Surgery, The Affiliated Hospital of Zunyi Medical University, Guizhou, China
| | - Xixian Ke
- Department of Thoracic Surgery, The Affiliated Hospital of Zunyi Medical University, Guizhou, China.
| | - Yongxiang Song
- Department of Thoracic Surgery, The Affiliated Hospital of Zunyi Medical University, Guizhou, China.
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14
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Zhang A, Tao W, Zhai K, Fang X, Huang Z, Yu JS, Sloan AE, Rich JN, Zhou W, Bao S. Protein sumoylation with SUMO1 promoted by Pin1 in glioma stem cells augments glioblastoma malignancy. Neuro Oncol 2021; 22:1809-1821. [PMID: 32592588 DOI: 10.1093/neuonc/noaa150] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND The tumorigenic potential of glioma stem cells (GSCs) is associated with multiple reversible molecular alternations, but the role of posttranslational protein sumoylation in GSCs has not been elucidated. The development of GSC-targeting drugs relies on the discovery of GSC-preferential molecular modifications and the relevant signaling pathways. In this work, we investigated the protein sumoylation status, the major sumoylated substrate, and the key regulatory enzyme in GSCs to explore the therapeutic potential of disrupting protein sumoylation for glioblastoma (GBM) treatment. METHODS Patient-derived GSCs, primary GBM sections, and intracranial GBM xenografts were used to determine protein sumoylation and the related molecular mechanisms by immunoblot, quantitative PCR, immunoprecipitation, immunofluorescence, and immunohistochemistry. Orthotopic GBM xenograft models were applied to investigate the inhibition of tumor growth by disrupting protein sumoylation with short hairpin (sh)RNAs or molecular inhibitors. RESULTS We show that high levels of small ubiquitin-related modifier 1 (SUMO1)-but not SUMO2/3-modified sumoylation are preferentially present in GSCs. The promyelocytic leukemia (PML) protein is a major SUMO1-sumoylated substrate in GSCs, whose sumoylation facilitates its interaction with c-Myc to stabilize c-Myc proteins. The prolyl-isomerase Pin1 is preferentially expressed in GSCs and functions as the key enzyme to promote SUMO1 sumoylation. Disruption of SUMO1 sumoylation by Pin1 silencing with shRNAs or inhibition with its inhibitor Juglone markedly abrogated GSC maintenance and mitigated GSC-driven tumor growth. CONCLUSIONS Our findings indicate that high SUMO1-modified protein sumoylation as a feature of GSCs is critical for GSC maintenance, suggesting that targeting SUMO1 sumoylation may effectively improve GBM treatment.
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Affiliation(s)
- Aili Zhang
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Weiwei Tao
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Kui Zhai
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Xiaoguang Fang
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Zhi Huang
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Jennifer S Yu
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA.,Department of Radiation Oncology, Cleveland Clinic, Cleveland, Ohio, USA.,Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Andrew E Sloan
- Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA.,Brain Tumor and Neuro-Oncology Center, University Hospitals, Case Western Reserve University, Cleveland, Ohio, USA
| | - Jeremy N Rich
- Division of Regenerative Medicine, Department of Medicine, University of California at San Diego, San Diego, California, USA
| | - Wenchao Zhou
- Intelligent Pathology Institute, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
| | - Shideng Bao
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA.,Brain Tumor and Neuro-Oncology Center, University Hospitals, Case Western Reserve University, Cleveland, Ohio, USA.,Center for Cancer Stem Cell Research, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
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15
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Roche T, Romero J, Zhai K, Granstedt E, Gota H, Putvinski S, Smirnov A, Binderbauer MW. The integrated diagnostic suite of the C-2W experimental field-reversed configuration device and its applications. Rev Sci Instrum 2021; 92:033548. [PMID: 33820036 DOI: 10.1063/5.0043807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 03/03/2021] [Indexed: 06/12/2023]
Abstract
In the current experimental device of TAE Technologies, C-2W (also called "Norman"), record breaking advanced beam-driven field-reversed configuration (FRC) plasmas are produced and sustained in steady state utilizing variable energy neutral beams (15-40 keV, total power up to 20 MW), advanced divertors, bias electrodes, and an active plasma control system. This fully operational experiment is coupled with a fully operational suite of advanced diagnostic systems. The suite consists of 60+ individual systems spanning 20 categories, including magnetic sensors, Thomson scattering, interferometry/polarimetry, spectroscopy, fast imaging, bolometry, reflectometry, charged and neutral particle analysis, fusion product detection, and electric probes. Recently, measurements of main ion temperatures via a diagnostic neutral beam, axial profiles of energy flux from an array of bolometers, and divertor and edge plasma parameters via an extensive set of electric probes, interferometers, and spectrometers have all been made available. All the diagnostics work together to provide a complete picture of the FRC, fast-ion inventory, and edge plasma details enabling tomographic reconstruction of plasma parameter profiles and real-time plasma control.
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Affiliation(s)
- T Roche
- TAE Technologies, Inc., 19631 Pauling, Foothill Ranch, California 92610, USA
| | - J Romero
- TAE Technologies, Inc., 19631 Pauling, Foothill Ranch, California 92610, USA
| | - K Zhai
- TAE Technologies, Inc., 19631 Pauling, Foothill Ranch, California 92610, USA
| | - E Granstedt
- TAE Technologies, Inc., 19631 Pauling, Foothill Ranch, California 92610, USA
| | - H Gota
- TAE Technologies, Inc., 19631 Pauling, Foothill Ranch, California 92610, USA
| | - S Putvinski
- TAE Technologies, Inc., 19631 Pauling, Foothill Ranch, California 92610, USA
| | - A Smirnov
- TAE Technologies, Inc., 19631 Pauling, Foothill Ranch, California 92610, USA
| | - M W Binderbauer
- TAE Technologies, Inc., 19631 Pauling, Foothill Ranch, California 92610, USA
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16
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Tao W, Zhang A, Zhai K, Huang Z, Huang H, Zhou W, Huang Q, Fang X, Prager BC, Wang X, Wu Q, Sloan AE, Ahluwalia MS, Lathia JD, Yu JS, Rich JN, Bao S. SATB2 drives glioblastoma growth by recruiting CBP to promote FOXM1 expression in glioma stem cells. EMBO Mol Med 2020; 12:e12291. [PMID: 33124191 PMCID: PMC7721366 DOI: 10.15252/emmm.202012291] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 09/19/2020] [Accepted: 09/22/2020] [Indexed: 12/16/2022] Open
Abstract
Nuclear matrix-associated proteins (NMPs) play critical roles in regulating chromatin organization and gene transcription by binding to the matrix attachment regions (MARs) of DNA. However, the functional significance of NMPs in glioblastoma (GBM) progression remains unclear. Here, we show that the Special AT-rich Binding Protein-2 (SATB2), one of crucial NMPs, recruits histone acetyltransferase CBP to promote the FOXM1-mediated cell proliferation and tumor growth of GBM. SATB2 is preferentially expressed by glioma stem cells (GSCs) in GBM. Disrupting SATB2 markedly inhibited GSC proliferation and GBM malignant growth by down-regulating expression of key genes involved in cell proliferation program. SATB2 activates FOXM1 expression to promote GSC proliferation through binding to the MAR sequence of FOXM1 gene locus and recruiting CBP to the MAR. Importantly, pharmacological inhibition of SATB2/CBP transcriptional activity by the CBP inhibitor C646 suppressed GSC proliferation in vitro and GBM growth in vivo. Our study uncovers a crucial role of the SATB2/CBP-mediated transcriptional regulation in GBM growth, indicating that targeting SATB2/CBP may effectively improve GBM treatment.
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Affiliation(s)
- Weiwei Tao
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Aili Zhang
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Kui Zhai
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Zhi Huang
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Haidong Huang
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Wenchao Zhou
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Qian Huang
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Xiaoguang Fang
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Briana C Prager
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA, USA.,Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Xiuxing Wang
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA, USA
| | - Qiulian Wu
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA, USA
| | - Andrew E Sloan
- Brain Tumor and Neuro-Oncology Center & Center of Excellence for Translational Neuro-Oncology, University Hospitals Seidman Cancer Center, Case Western Reserve University, Cleveland, OH, USA.,Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Manmeet S Ahluwalia
- Brain Tumor and Neuro-Oncology Center, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Justin D Lathia
- Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, OH, USA.,Brain Tumor and Neuro-Oncology Center, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA.,Department of Cardiovascular and Metabolic Sciences, Cleveland Clinic, Cleveland, OH, USA
| | - Jennifer S Yu
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA.,Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, OH, USA.,Center for Cancer Stem Cell Research, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA.,Department of Radiation Oncology, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Jeremy N Rich
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA, USA
| | - Shideng Bao
- Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA.,Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, OH, USA.,Center for Cancer Stem Cell Research, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
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17
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Wang X, Prager BC, Wu Q, Kim LJY, Gimple RC, Shi Y, Yang K, Morton AR, Zhou W, Zhu Z, Obara EAA, Miller TE, Song A, Lai S, Hubert CG, Jin X, Huang Z, Fang X, Dixit D, Tao W, Zhai K, Chen C, Dong Z, Zhang G, Dombrowski SM, Hamerlik P, Mack SC, Bao S, Rich JN. Reciprocal Signaling between Glioblastoma Stem Cells and Differentiated Tumor Cells Promotes Malignant Progression. Cell Stem Cell 2019; 22:514-528.e5. [PMID: 29625067 DOI: 10.1016/j.stem.2018.03.011] [Citation(s) in RCA: 153] [Impact Index Per Article: 30.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 01/19/2018] [Accepted: 03/13/2018] [Indexed: 12/12/2022]
Abstract
Glioblastoma is the most lethal primary brain tumor; however, the crosstalk between glioblastoma stem cells (GSCs) and their supportive niche is not well understood. Here, we interrogated reciprocal signaling between GSCs and their differentiated glioblastoma cell (DGC) progeny. We found that DGCs accelerated GSC tumor growth. DGCs preferentially expressed brain-derived neurotrophic factor (BDNF), whereas GSCs expressed the BDNF receptor NTRK2. Forced BDNF expression in DGCs augmented GSC tumor growth. To determine molecular mediators of BDNF-NTRK2 paracrine signaling, we leveraged transcriptional and epigenetic profiles of matched GSCs and DGCs, revealing preferential VGF expression by GSCs, which patient-derived tumor models confirmed. VGF serves a dual role in the glioblastoma hierarchy by promoting GSC survival and stemness in vitro and in vivo while also supporting DGC survival and inducing DGC secretion of BDNF. Collectively, these data demonstrate that differentiated glioblastoma cells cooperate with stem-like tumor cells through BDNF-NTRK2-VGF paracrine signaling to promote tumor growth.
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Affiliation(s)
- Xiuxing Wang
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA, USA
| | - Briana C Prager
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA, USA; Department of Pathology, Case Western Reserve University, Cleveland, OH, USA; Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH, USA
| | - Qiulian Wu
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA, USA
| | - Leo J Y Kim
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA, USA; Department of Pathology, Case Western Reserve University, Cleveland, OH, USA
| | - Ryan C Gimple
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA, USA; Department of Pathology, Case Western Reserve University, Cleveland, OH, USA
| | - Yu Shi
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, The Third Military Medical University, and The Key Laboratory of Tumor Immunopathology, The Ministry of Education of China, Chongqing, China
| | - Kailin Yang
- Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH, USA
| | - Andrew R Morton
- Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, OH, USA
| | - Wenchao Zhou
- Department of Stem Cell Biology and Regenerative Medicine, Cleveland Clinic Lerner Research Institute, Cleveland, OH, USA
| | - Zhe Zhu
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA, USA
| | | | - Tyler E Miller
- Department of Pathology, Case Western Reserve University, Cleveland, OH, USA
| | - Anne Song
- Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH, USA
| | - Sisi Lai
- Department of Stem Cell Biology and Regenerative Medicine, Cleveland Clinic Lerner Research Institute, Cleveland, OH, USA
| | - Christopher G Hubert
- Department of Stem Cell Biology and Regenerative Medicine, Cleveland Clinic Lerner Research Institute, Cleveland, OH, USA
| | - Xun Jin
- Department of Stem Cell Biology and Regenerative Medicine, Cleveland Clinic Lerner Research Institute, Cleveland, OH, USA
| | - Zhi Huang
- Department of Stem Cell Biology and Regenerative Medicine, Cleveland Clinic Lerner Research Institute, Cleveland, OH, USA
| | - Xiaoguang Fang
- Department of Stem Cell Biology and Regenerative Medicine, Cleveland Clinic Lerner Research Institute, Cleveland, OH, USA
| | - Deobrat Dixit
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA, USA
| | - Weiwei Tao
- Department of Stem Cell Biology and Regenerative Medicine, Cleveland Clinic Lerner Research Institute, Cleveland, OH, USA
| | - Kui Zhai
- Department of Stem Cell Biology and Regenerative Medicine, Cleveland Clinic Lerner Research Institute, Cleveland, OH, USA
| | - Cong Chen
- Department of Stem Cell Biology and Regenerative Medicine, Cleveland Clinic Lerner Research Institute, Cleveland, OH, USA
| | - Zhen Dong
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA, USA
| | - Guoxin Zhang
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA, USA
| | - Stephen M Dombrowski
- Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH, USA
| | - Petra Hamerlik
- Brain Tumor Biology, Danish Cancer Society Research Center, Strandboulevarden 49, Copenhagen 2100, Denmark
| | - Stephen C Mack
- Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Shideng Bao
- Department of Stem Cell Biology and Regenerative Medicine, Cleveland Clinic Lerner Research Institute, Cleveland, OH, USA
| | - Jeremy N Rich
- Division of Regenerative Medicine, Department of Medicine, University of California, San Diego, San Diego, CA, USA.
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18
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Xie Q, Wu TP, Gimple RC, Li Z, Prager BC, Wu Q, Yu Y, Wang P, Wang Y, Gorkin DU, Zhang C, Dowiak AV, Lin K, Zeng C, Sui Y, Kim LJY, Miller TE, Jiang L, Lee-Poturalski C, Huang Z, Fang X, Zhai K, Mack SC, Sander M, Bao S, Kerstetter-Fogle AE, Sloan AE, Xiao AZ, Rich JN. N 6-methyladenine DNA Modification in Glioblastoma. Cell 2018; 175:1228-1243.e20. [PMID: 30392959 PMCID: PMC6433469 DOI: 10.1016/j.cell.2018.10.006] [Citation(s) in RCA: 195] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 07/26/2018] [Accepted: 10/01/2018] [Indexed: 02/07/2023]
Abstract
Genetic drivers of cancer can be dysregulated through epigenetic modifications of DNA. Although the critical role of DNA 5-methylcytosine (5mC) in the regulation of transcription is recognized, the functions of other non-canonical DNA modifications remain obscure. Here, we report the identification of novel N6-methyladenine (N6-mA) DNA modifications in human tissues and implicate this epigenetic mark in human disease, specifically the highly malignant brain cancer glioblastoma. Glioblastoma markedly upregulated N6-mA levels, which co-localized with heterochromatic histone modifications, predominantly H3K9me3. N6-mA levels were dynamically regulated by the DNA demethylase ALKBH1, depletion of which led to transcriptional silencing of oncogenic pathways through decreasing chromatin accessibility. Targeting the N6-mA regulator ALKBH1 in patient-derived human glioblastoma models inhibited tumor cell proliferation and extended the survival of tumor-bearing mice, supporting this novel DNA modification as a potential therapeutic target for glioblastoma. Collectively, our results uncover a novel epigenetic node in cancer through the DNA modification N6-mA.
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Affiliation(s)
- Qi Xie
- Department of Medicine, Division of Regenerative Medicine,
University of California, San Diego, La Jolla CA 92037, USA
| | - Tao P. Wu
- Department of Genetics and Yale Stem Cell Center, Yale
School of Medicine, New Haven CT 06520, USA,Present address: Department of Molecular and Human
Genetics, Baylor College of Medicine, One Baylor Plaza, Houston TX 77030, USA
| | - Ryan C. Gimple
- Department of Medicine, Division of Regenerative Medicine,
University of California, San Diego, La Jolla CA 92037, USA,Department of Pathology, Case Western Reserve University,
Cleveland, OH 44120, USA
| | - Zheng Li
- Department of Genetics and Yale Stem Cell Center, Yale
School of Medicine, New Haven CT 06520, USA
| | - Briana C. Prager
- Department of Medicine, Division of Regenerative Medicine,
University of California, San Diego, La Jolla CA 92037, USA,Department of Pathology, Case Western Reserve University,
Cleveland, OH 44120, USA,Cleveland Clinic Lerner College of Medicine, Case Western
Reserve University, Cleveland OH 44195, USA
| | - Qiulian Wu
- Department of Medicine, Division of Regenerative Medicine,
University of California, San Diego, La Jolla CA 92037, USA
| | - Yang Yu
- Department of Chemistry, University of California,
Riverside CA 92521, USA
| | - Pengcheng Wang
- Department of Chemistry, University of California,
Riverside CA 92521, USA
| | - Yinsheng Wang
- Department of Chemistry, University of California,
Riverside CA 92521, USA
| | - David U. Gorkin
- Center for Epigenomics, Department of Cellular and
Molecular Medicine, University of California, San Diego, La Jolla CA 92037,
USA
| | - Cheng Zhang
- Center for Epigenomics, Department of Cellular and
Molecular Medicine, University of California, San Diego, La Jolla CA 92037,
USA
| | - Alexis V. Dowiak
- Center for Epigenomics, Department of Cellular and
Molecular Medicine, University of California, San Diego, La Jolla CA 92037,
USA
| | - Kaixuan Lin
- Department of Genetics and Yale Stem Cell Center, Yale
School of Medicine, New Haven CT 06520, USA
| | - Chun Zeng
- Departments of Pediatrics and Cellular and Molecular
Medicine, Pediatric Diabetes Research Center, University of California, San Diego,
La Jolla CA 92093, USA
| | - Yinghui Sui
- Departments of Pediatrics and Cellular and Molecular
Medicine, Pediatric Diabetes Research Center, University of California, San Diego,
La Jolla CA 92093, USA
| | - Leo J. Y. Kim
- Department of Medicine, Division of Regenerative Medicine,
University of California, San Diego, La Jolla CA 92037, USA,Department of Pathology, Case Western Reserve University,
Cleveland, OH 44120, USA
| | - Tyler E. Miller
- Department of Pathology, Case Western Reserve University,
Cleveland, OH 44120, USA
| | - Li Jiang
- Department of Medicine, Division of Regenerative Medicine,
University of California, San Diego, La Jolla CA 92037, USA
| | | | - Zhi Huang
- Department of Stem Cell Biology and Regenerative
Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland OH 44195, USA
| | - Xiaoguang Fang
- Department of Stem Cell Biology and Regenerative
Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland OH 44195, USA
| | - Kui Zhai
- Department of Stem Cell Biology and Regenerative
Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland OH 44195, USA
| | - Stephen C. Mack
- Department of Pediatrics, Division of Hematology and
Oncology, Baylor College of Medicine, Texas Children's Hospital, Houston TX,
77030, USA
| | - Maike Sander
- Departments of Pediatrics and Cellular and Molecular
Medicine, Pediatric Diabetes Research Center, University of California, San Diego,
La Jolla CA 92093, USA
| | - Shideng Bao
- Department of Stem Cell Biology and Regenerative
Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland OH 44195, USA
| | - Amber E. Kerstetter-Fogle
- Case Comprehensive Cancer Center, Case Western Reserve
University School of Medicine, Cleveland OH, 44106, USA,Department of Neurological Surgery, University
Hospitals-Cleveland Medical Center, Cleveland OH, 44106, USA
| | - Andrew E. Sloan
- Case Comprehensive Cancer Center, Case Western Reserve
University School of Medicine, Cleveland OH, 44106, USA,Department of Neurological Surgery, University
Hospitals-Cleveland Medical Center, Cleveland OH, 44106, USA
| | - Andrew Z. Xiao
- Department of Genetics and Yale Stem Cell Center, Yale
School of Medicine, New Haven CT 06520, USA,Correspondence to: Jeremy N. Rich
() and Andrew Z. Xiao
()
| | - Jeremy N. Rich
- Department of Medicine, Division of Regenerative Medicine,
University of California, San Diego, La Jolla CA 92037, USA,Department of Neurosciences, University of California,
San Diego, School of Medicine, La Jolla CA 92037, USA,Lead Contact,Correspondence to: Jeremy N. Rich
() and Andrew Z. Xiao
()
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19
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Zhai K, Schindler T, Ottaviano A, Zhang H, Fallah D, Wells J, Parke E, Thompson MC. Thomson scattering systems on C-2W field-reversed configuration plasma experiment. Rev Sci Instrum 2018; 89:10C118. [PMID: 30399708 DOI: 10.1063/1.5037327] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 09/14/2018] [Indexed: 06/08/2023]
Abstract
TAE Technologies' newly constructed C-2W experiment aims to improve the ion and electron temperatures in a sustained field-reversed configuration plasma. A suite of Thomson scattering systems has been designed and constructed for electron temperature and density profile measurements. The systems are designed for electron densities of 1 × 1012 cm-3 to 2 × 1014 cm-3 and temperature ranges from 10 eV to 2 keV. The central system will provide profile measurements of Te and ne at 16 radial locations from r = -9 cm to r = 64 cm with a temporal resolution of 20 kHz for 4 pulses or 1 kHz for 30 pulses. The jet system will provide profile measurements of Te and ne at 5 radial locations in the open field region from r = -5 cm to r = 15 cm with a temporal resolution of 100 Hz. The central system and its components have been characterized, calibrated, installed, and commissioned. A maximum-likelihood algorithm has been applied for data processing and analysis.
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Affiliation(s)
- K Zhai
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - T Schindler
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - A Ottaviano
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - H Zhang
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - D Fallah
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - J Wells
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - E Parke
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - M C Thompson
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
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20
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Ottaviano A, Schindler TM, Zhai K, Parke E, Granstedt E, Thompson MC. Characterization and calibration of the Thomson scattering diagnostic suite for the C-2W field-reversed configuration experiment. Rev Sci Instrum 2018; 89:10C120. [PMID: 30399673 DOI: 10.1063/1.5037101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 09/07/2018] [Indexed: 06/08/2023]
Abstract
The new C-2W Thomson scattering (TS) diagnostic consists of two individual subsystems for monitoring electron temperature (Te) and density (ne): one system in the central region is currently operational, and the second system is being commissioned to monitor the open field line region. Validating the performance of the TS's custom designed system components and unique calibration of the detection system and diagnostic as a whole is crucial to obtaining high precision Te and ne profiles of C-2W's plasma. The major components include a diode-pumped Nd:YAG laser which produces 35 pulses at up to 20 kHz, uniquely designed collection lenses with a fast numerical aperture, and uniquely designed polychromators with filters sets to optimize a Te ranging from 10 eV to 2 keV. This paper describes the design principles and techniques used to characterize the main components of the TS diagnostic on C-2W, as well as the results of Rayleigh scattering calibrations performed for the whole system response.
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Affiliation(s)
- A Ottaviano
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - T M Schindler
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - K Zhai
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - E Parke
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - E Granstedt
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
| | - M C Thompson
- TAE Technologies, Inc., Foothill Ranch, California 92610, USA
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21
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Cheng T, Zhai K, Chang Y, Yao G, He J, Wang F, Kong H, Xin H, Wang H, Jin M, Gong B, Gu L, Yang Z, Wu Y, Ji G, Sun Y. CHIR99021 combined with retinoic acid promotes the differentiation of primordial germ cells from human embryonic stem cells. Oncotarget 2018; 8:7814-7826. [PMID: 27999196 PMCID: PMC5352363 DOI: 10.18632/oncotarget.13958] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2016] [Accepted: 12/01/2016] [Indexed: 11/25/2022] Open
Abstract
Primordial germ cells (PGCs) derived from human embryonic stem cells (hESCs) represent as a desirable experimental model as well as a potential strategy for treating male infertility. Here, we developed a simple and feasible method for differentiation of PGCs from hESCs by using CHIR99021 (an inhibitor of glycogen synthase kinase 3) and retinoic acid (RA). We firstly found that the deleted in azoospermia-like (DAZL) protein can be detected in 3 d CHIR99021 plus 9 d retinoic acid treated cultures and 12 d CHIR99021 plus retinoic acid co-treated cultures, but not expressed in single CHIR99021 treated cultures, single retinoic acid treated cultures, as well as 3 d retinoic acid plus 9 d CHIR99021 treated cultures. Next, we showed that several PGCs’ markers were expressed in the 12 d CHIR99021 and retinoic acid co-treated cultures or 3 d CHIR99021 plus 9 d retinoic acid treated cultures. Moreover, meiosis was initiated in CHIR99021 and retinoic acid co-treated cultures as evidenced by a significant expression of the punctate synaptonemal complex protein 3 (SCP3). Fluorescent in situ hybridization (FISH) analysis indicated that a small percentage of putative 1N populations were formed. Mechanically, we found that β-catenin relocated into nucleus after the treatment of 3 d CHIR99021 suggesting that Wnt signaling pathway was activated. Furthermore, blockade of Wnt signaling pathway by IWR-1 can reverse CHIR99021 and retinoic acid mediated-effects. Taken together, our results indicate that CHIR99021 combined with retinoic acid can effectively differentiate hESCs into PGCs via activating Wnt signaling pathway.
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Affiliation(s)
- Tingting Cheng
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Kui Zhai
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Yan Chang
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Guidong Yao
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Jiahuan He
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Fang Wang
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Huijuan Kong
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Hang Xin
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Huiwen Wang
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Meng Jin
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Bing Gong
- Department of Cardiac Surgery, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lei Gu
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Zhiguang Yang
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Yanyun Wu
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Guangju Ji
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Yingpu Sun
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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22
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Zhai K, Yang Z, Zhu X, Nyirimigabo E, Mi Y, Wang Y, Liu Q, Man L, Wu S, Jin J, Ji G. Activation of bitter taste receptors (tas2rs) relaxes detrusor smooth muscle and suppresses overactive bladder symptoms. Oncotarget 2018; 7:21156-67. [PMID: 27056888 PMCID: PMC5008275 DOI: 10.18632/oncotarget.8549] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 03/20/2016] [Indexed: 12/18/2022] Open
Abstract
Bitter taste receptors (TAS2Rs) are traditionally thought to be expressed exclusively on the taste buds of the tongue. However, accumulating evidence has indicated that this receptor family performs non-gustatory functions outside the mouth in addition to taste. Here, we examined the role of TAS2Rs in human and mouse detrusor smooth muscle (DSM). We showed that mRNA for various TAS2R subtypes was expressed in both human and mouse detrusor smooth muscle (DSM) at distinct levels. Chloroquine (CLQ), an agonist for TAS2Rs, concentration-dependently relaxed carbachol- and KCl-induced contractions of human DSM strips. Moreover, 100 μM of CLQ significantly inhibited spontaneous and electrical field stimulation (EFS)-induced contractions of human DSM strips. After a slight contraction, CLQ (1 mM) entirely relaxed carbachol-induced contraction of mouse DSM strips. Furthermore, denatonium and quinine concentration-dependently decreased carbachol-induced contractions of mouse DSM strips. Finally, we demonstrated that CLQ treatment significantly suppressed the overactive bladder (OAB) symptoms of mice with partial bladder outlet obstruction (PBOO). In conclusion, we for the first time provide evidence of the existence of TAS2Rs in the urinary DSM and demonstrate that TAS2Rs may represent a potential target for OAB. These findings open a new approach to develop drugs for OAB in the future.
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Affiliation(s)
- Kui Zhai
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Zhiguang Yang
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Xiaofei Zhu
- Department of Urology, Beijing Jishuitan Hospital, Beijing, China
| | - Eric Nyirimigabo
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Yue Mi
- Department of Urology, National Research Center for Genitourinary Oncology, Peking University First Hospital and Institute of Urology, Beijing, China
| | - Yan Wang
- Department of Gastroenterology, Peking University First Hospital, Beijing, China
| | - Qinghua Liu
- Institute for Medical Biology, College of Life Sciences, South-Central University for Nationalities, Wuhan, China
| | - Libo Man
- Department of Urology, Beijing Jishuitan Hospital, Beijing, China
| | - Shiliang Wu
- Department of Urology, National Research Center for Genitourinary Oncology, Peking University First Hospital and Institute of Urology, Beijing, China
| | - Jie Jin
- Department of Urology, National Research Center for Genitourinary Oncology, Peking University First Hospital and Institute of Urology, Beijing, China
| | - Guangju Ji
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
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Zhu X, Zhai K, Mi Y, Ji G. Erratum to: Expression and function of phosphodiesterases (PDEs) in the rat urinary bladder. BMC Urol 2017; 17:68. [PMID: 28841863 PMCID: PMC5572064 DOI: 10.1186/s12894-017-0259-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 08/22/2017] [Indexed: 12/02/2022] Open
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Huang X, Jin M, Chen YX, Wang J, Zhai K, Chang Y, Yuan Q, Yao KT, Ji G. ERP44 inhibits human lung cancer cell migration mainly via IP3R2. Aging (Albany NY) 2017; 8:1276-86. [PMID: 27347718 PMCID: PMC4931832 DOI: 10.18632/aging.100984] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Accepted: 06/10/2016] [Indexed: 12/21/2022]
Abstract
Cancer cell migration is involved in tumour metastasis. However, the relationship between calcium signalling and cancer migration is not well elucidated. In this study, we used the human lung adenocarcinoma A549 cell line to examine the role of endoplasmic reticulum protein 44 (ERP44), which has been reported to regulate calcium release inside of the endoplasmic reticulum (ER), in cell migration. We found that the inositol 1,4,5-trisphosphate receptors (IP3Rs/ITPRs) inhibitor 2-APB significantly inhibited A549 cell migration by inhibiting cell polarization and pseudopodium protrusion, which suggests that Ca2+ is necessary for A549 cell migration. Similarly, the overexpression of ERP44 reduced intracellular Ca2+ release via IP3Rs, altered cell morphology and significantly inhibited the migration of A549 cells. These phenomena were primarily dependent on IP3R2 because wound healing in A549 cells with IP3R2 rather than IP3R1 or IP3R3 siRNA was markedly inhibited. Moreover, the overexpression of ERP44 did not affect the migration of the human neuroblastoma cell line SH-SY5Y, which mainly expresses IP3R1. Based on the above observations, we conclude that ERP44 regulates A549 cell migration mainly via an IP3R2-dependent pathway.
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Affiliation(s)
- Xue Huang
- Cancer Research Institute of Southern Medical University, Guangzhou, China
| | - Meng Jin
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Ying-Xiao Chen
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.,Current address: Department of Molecular and Medical Genetics, Oregon Health and Science University, Portland, OR 97239, USA
| | - Jun Wang
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Kui Zhai
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Yan Chang
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Qi Yuan
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Kai-Tai Yao
- Cancer Research Institute of Southern Medical University, Guangzhou, China
| | - Guangju Ji
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
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Abstract
Background It has been shown that hosphodiesterases (PDEs) play an important role in mediating the smooth muscle tone of rat urinary bladder. However, the gene expression profiles of them were still unknown. Methods Urinary bladder Strips were obtained from both neonatal and adult Sprague-Dawley rats. RT-PCR/western blot and organ bath were used to measure the expression and function of PDEs. Results Adult rat urinary bladder expressed various PDE mRNA with the following rank order: PDE5A ≈ PDE9A ≈ PDE10A > PDE2A ≈ PDE4A ≈ PDE4D > PDE4B ≈ PDE3B ≈ PDE8B ≈ PDE7A ≈ PDE7B > PDE1A. PDE1B, PDE1C, PDE3A, PDE4C, PDE8A, and PDE11A were not detected. Of interest, the mRNA and protein of PDE3A were significantly decreased in adult rat urinary bladder compared to neonatal rat urinary bladder. Cilostamide, a specific inhibitor for PDE3, significantly inhibited the amplitude and frequency of carbachol-enhanced phasic contractions of neonatal rat bladder strips by 38.8% and 12.1%, respectively. Compared to the neonatal rat bladder, the effect of cilostamide was significantly blunted in adult rat urinary bladder: the amplitude and frequency of carbachol-enhanced phasic contractions were decreased by 13.4% (P < 0.01 vs neonatal rat bladder) and 4.4%, respectively. However, the mRNA and the protein levels of PDE3B were similar between neonatal and adult rat bladder. Conclusion We found that several PDE isoforms were expressed in the rat urinary bladder with distinct levels. Moreover, we showed that the function of PDE3 was blunted in adult rat bladder likely due to the decreased expression of PDE3A.
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Affiliation(s)
- Xiaofei Zhu
- Department of Urology, Beijing Jishuitan Hospital, Beijing, China
| | - Kui Zhai
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, 15 Datun Road, Beijing, 100101, China.
| | - Yue Mi
- Department of Urology, Peking University First Hospital, Beijing, China
| | - Guangju Ji
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, 15 Datun Road, Beijing, 100101, China.
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Anderson DT, Abdou A, Almagri AF, Anderson FSB, Canik JM, Guttenfelder W, Lechte C, Likin KM, Lu H, Oh S, Probert PH, Radder J, Sakaguchi V, Schmitt J, Talmadge JN, Zhai K, Brower DL, Deng C. Overview of Recent Results from HSX. Fusion Science and Technology 2017. [DOI: 10.13182/fst06-a1232] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- D. T. Anderson
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - A. Abdou
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - A. F. Almagri
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - F. S. B. Anderson
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - J. M. Canik
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - W. Guttenfelder
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - C. Lechte
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - K. M. Likin
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - H. Lu
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - S. Oh
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - P. H. Probert
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - J. Radder
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - V. Sakaguchi
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - J. Schmitt
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - J. N. Talmadge
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - K. Zhai
- University of Wisconsin-Madison HSX Plasma Laboratory, 1415 Engineering Drive, Madison, Wisconsin 53706
| | - D. L. Brower
- University of California-Los Angeles, Electrical Engineering Department 66-127J Engineering IV Building, Los Angeles, California 90095-1594
| | - C. Deng
- University of California-Los Angeles, Electrical Engineering Department 66-127J Engineering IV Building, Los Angeles, California 90095-1594
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Gota H, Tuszewski M, Trask E, Garate E, Binderbauer MW, Tajima T, Schmitz L, Deng BH, Guo HY, Aefsky S, Allfrey I, Barnes D, Bolte N, Bui DQ, Ceccherini F, Clary R, Conroy KD, Cordero M, Dettrick SA, Douglass JD, Feng P, Granstedt E, Gupta D, Gupta S, Hooper C, Kinley JS, Knapp K, Korepanov S, Longman A, Magee R, Mendoza R, Mok Y, Necas A, Primavera S, Putvinski S, Onofri M, Osin D, Rath N, Roche T, Romero J, Rostoker N, Schroeder JH, Sevier L, Sibley A, Smirnov A, Song Y, Steinhauer LC, Thompson MC, Valentine T, Van Drie AD, Walters JK, Waggoner W, Yang X, Yushmanov P, Zhai K. Improved Confinement of C-2 Field-Reversed Configuration Plasmas. Fusion Science and Technology 2017. [DOI: 10.13182/fst14-871] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- H. Gota
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - M. Tuszewski
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - E. Trask
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - E. Garate
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - M. W. Binderbauer
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - T. Tajima
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - L. Schmitz
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
- University of California, Los Angeles, Department of Physics and Astronomy Los Angeles, California 90095
| | - B. H. Deng
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - H. Y. Guo
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - S. Aefsky
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - I. Allfrey
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - D. Barnes
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - N. Bolte
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - D. Q. Bui
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - F. Ceccherini
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - R. Clary
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - K. D. Conroy
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - M. Cordero
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - S. A. Dettrick
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - J. D. Douglass
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - P. Feng
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - E. Granstedt
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - D. Gupta
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - S. Gupta
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - C. Hooper
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - J. S. Kinley
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - K. Knapp
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - S. Korepanov
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - A. Longman
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - R. Magee
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - R. Mendoza
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - Y. Mok
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - A. Necas
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - S. Primavera
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - S. Putvinski
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - M. Onofri
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - D. Osin
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - N. Rath
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - T. Roche
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - J. Romero
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - N. Rostoker
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - J. H. Schroeder
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - L. Sevier
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - A. Sibley
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - A. Smirnov
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - Y. Song
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - L. C. Steinhauer
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - M. C. Thompson
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - T. Valentine
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - A. D. Van Drie
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - J. K. Walters
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - W. Waggoner
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - X. Yang
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - P. Yushmanov
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
| | - K. Zhai
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688
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Wang Y, Li JX, Ji GJ, Zhai K, Wang HH, Liu XG. The Involvement of Ca(2+) Signal Pathways in Distal Colonic Myocytes in a Rat Model of Dextran Sulfate Sodium-induced Colitis. Chin Med J (Engl) 2017; 129:1185-92. [PMID: 27174327 PMCID: PMC4878164 DOI: 10.4103/0366-6999.181968] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Background: Disrupted Ca2+ homeostasis contributes to the development of colonic dysmotility in ulcerative colitis (UC), but the underlying mechanisms are unknown. This study aimed to examine the alteration of colonic smooth muscle (SM) Ca2+ signaling and Ca2+ handling proteins in a rat model of dextran sulfate sodium (DSS)-induced UC. Methods: Male Sprague-Dawley rats were randomly divided into control (n = 18) and DSS (n = 17) groups. Acute colitis was induced by 5% DSS in the drinking water for 7 days. Contractility of colonic SM strips (controls, n = 8 and DSS, n = 7) was measured in an organ bath. Cytosolic resting Ca2+ levels (n = 3 in each group) and Ca2+ transients (n = 3 in each group) were measured in single colonic SM cells. Ca2+ handling protein expression was determined by Western blotting (n = 4 in each group). Differences between control and DSS groups were analyzed by a two-sample independent t-test. Results: Average tension and amplitude of spontaneous contractions of colonic muscle strips were significantly enhanced in DSS-treated rats compared with controls (1.25 ± 0.08 g vs. 0.96 ± 0.05 g, P = 0.007; and 2.67 ± 0.62 g vs. 0.52 ± 0.10 g, P = 0.013). Average tensions of carbachol-evoked contractions were much weaker in the DSS group (1.08 ± 0.10 g vs. 1.80 ± 0.19 g, P = 0.006). Spontaneous Ca2+ transients were observed in more SM cells from DSS-treated rats (15/30 cells) than from controls (5/36 cells). Peak caffeine-induced intracellular Ca2+ release was lower in SM cells of DSS-treated rats than controls (0.413 ± 0.046 vs. 0.548 ± 0.041, P = 0.033). Finally, several Ca2+ handling proteins in colonic SM were altered by DSS treatment, including sarcoplasmic reticulum calcium-transporting ATPase 2a downregulation and phospholamban and inositol 1,4,5-trisphosphate receptor 1 upregulation. Conclusions: Impaired intracellular Ca2+ signaling of colonic SM, caused by alteration of Ca2+ handing proteins, contribute to colonic dysmotility in DSS-induced UC.
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Affiliation(s)
- Yan Wang
- Department of Gastroenterology, Peking University First Hospital, Peking University, Beijing 100034, China
| | - Jun-Xia Li
- Department of Gastroenterology, Peking University First Hospital, Peking University, Beijing 100034, China
| | - Guang-Ju Ji
- Department of Biomacromolecules, National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Kui Zhai
- Department of Biomacromolecules, National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Hua-Hong Wang
- Department of Gastroenterology, Peking University First Hospital, Peking University, Beijing 100034, China
| | - Xin-Guang Liu
- Department of Gastroenterology, Peking University First Hospital, Peking University, Beijing 100034, China
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Zhao J, Cao H, Tian L, Huo W, Zhai K, Wang P, Ji G, Ma Y. Efficient Differentiation of TBX18 +/WT1 + Epicardial-Like Cells from Human Pluripotent Stem Cells Using Small Molecular Compounds. Stem Cells Dev 2016; 26:528-540. [PMID: 27927069 PMCID: PMC5372775 DOI: 10.1089/scd.2016.0208] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The epicardium promotes neovascularization and cardiomyocyte regeneration by generating vascular smooth muscle cells (SMCs) and producing regenerative factors after adult heart infarction. It is therefore a potential cell resource for repair of the injured heart. However, the epicardium also participates in fibrosis and scarring of the injured heart, complicating its use in regenerative medicine. In this study, we report coexpression of TBX18 and WT1 in the majority of epicardial cells during mouse embryonic epicardial development. Furthermore, we describe a convenient chemically defined, immunogen-free, small molecule-based method for generating TBX18+/WT1+ epicardial-like cell populations with 80% homogeneity from human pluripotent stem cells by modulation of the WNT and retinoic acid signaling pathways. These epicardial-like cells exhibited characteristic epicardial cell morphology following passaging and differentiation into functional SMCs or cardiac fibroblast-like cells. Our findings add to existing understanding of human epicardial development and provide an efficient and stable method for generating both human epicardial-like cells and SMCs.
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Affiliation(s)
- Jianmin Zhao
- 1 National Laboratory of Biomacromolecules, Institute of Biophysics , Chinese Academy of Sciences, Beijing, China .,2 Medical School of University of Chinese Academy of Sciences , Beijing, China
| | - Henghua Cao
- 1 National Laboratory of Biomacromolecules, Institute of Biophysics , Chinese Academy of Sciences, Beijing, China .,2 Medical School of University of Chinese Academy of Sciences , Beijing, China
| | - Luyang Tian
- 1 National Laboratory of Biomacromolecules, Institute of Biophysics , Chinese Academy of Sciences, Beijing, China .,2 Medical School of University of Chinese Academy of Sciences , Beijing, China
| | - Weibang Huo
- 1 National Laboratory of Biomacromolecules, Institute of Biophysics , Chinese Academy of Sciences, Beijing, China .,2 Medical School of University of Chinese Academy of Sciences , Beijing, China
| | - Kui Zhai
- 1 National Laboratory of Biomacromolecules, Institute of Biophysics , Chinese Academy of Sciences, Beijing, China
| | - Pei Wang
- 1 National Laboratory of Biomacromolecules, Institute of Biophysics , Chinese Academy of Sciences, Beijing, China
| | - Guangju Ji
- 1 National Laboratory of Biomacromolecules, Institute of Biophysics , Chinese Academy of Sciences, Beijing, China
| | - Yue Ma
- 1 National Laboratory of Biomacromolecules, Institute of Biophysics , Chinese Academy of Sciences, Beijing, China .,2 Medical School of University of Chinese Academy of Sciences , Beijing, China
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Zhai K, Schindler T, Kinley J, Deng B, Thompson MC. The upgrade of the Thomson scattering system for measurement on the C-2/C-2U devices. Rev Sci Instrum 2016; 87:11D602. [PMID: 27910634 DOI: 10.1063/1.4955496] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The C-2/C-2U Thomson scattering system has been substantially upgraded during the latter phase of C-2/C-2U program. A Rayleigh channel has been added to each of the three polychromators of the C-2/C-2U Thomson scattering system. Onsite spectral calibration has been applied to avoid the issue of different channel responses at different spots on the photomultiplier tube surface. With the added Rayleigh channel, the absolute intensity response of the system is calibrated with Rayleigh scattering in argon gas from 0.1 to 4 Torr, where the Rayleigh scattering signal is comparable to the Thomson scattering signal at electron densities from 1 × 1013 to 4 × 1014 cm-3. A new signal processing algorithm, using a maximum likelihood method and including detailed analysis of different noise contributions within the system, has been developed to obtain electron temperature and density profiles. The system setup, spectral and intensity calibration procedure and its outcome, data analysis, and the results of electron temperature/density profile measurements will be presented.
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Affiliation(s)
- K Zhai
- Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688, USA
| | - T Schindler
- Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688, USA
| | - J Kinley
- Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688, USA
| | - B Deng
- Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688, USA
| | - M C Thompson
- Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688, USA
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31
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Zhai K, Gu L, Yang Z, Mao Y, Jin M, Chang Y, Yuan Q, Leblais V, Wang H, Fischmeister R, Ji G. RNA-binding protein CUGBP1 regulates insulin secretion via activation of phosphodiesterase 3B in mice. Diabetologia 2016; 59:1959-67. [PMID: 27255754 DOI: 10.1007/s00125-016-4005-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2016] [Accepted: 05/16/2016] [Indexed: 01/17/2023]
Abstract
AIMS/HYPOTHESIS CUG-binding protein 1 (CUGBP1) is a multifunctional RNA-binding protein that regulates RNA processing at several stages including translation, deadenylation and alternative splicing, as well as RNA stability. Recent studies indicate that CUGBP1 may play a role in metabolic disorders. Our objective was to examine its role in endocrine pancreas function through gain- and loss-of-function experiments and to further decipher the underlying molecular mechanisms. METHODS A mouse model in which type 2 diabetes was induced by a high-fat diet (HFD; 60% energy from fat) and mice on a standard chow diet (10% energy from fat) were compared. Pancreas-specific CUGBP1 overexpression and knockdown mice were generated. Different lengths of the phosphodiesterase subtype 3B (PDE3B) 3' untranslated region (UTR) were cloned for luciferase reporter analysis. Purified CUGBP1 protein was used for gel shift experiments. RESULTS CUGBP1 is present in rodent islets and in beta cell lines; it is overexpressed in the islets of diabetic mice. Compared with control mice, the plasma insulin level after a glucose load was significantly lower and glucose clearance was greatly delayed in mice with pancreas-specific CUGBP1 overexpression; the opposite results were obtained upon pancreas-specific CUGBP1 knockdown. Glucose- and glucagon-like peptide1 (GLP-1)-stimulated insulin secretion was significantly attenuated in mouse islets upon CUGBP1 overexpression. This was associated with a strong decrease in intracellular cAMP levels, pointing to a potential role for cAMP PDEs. CUGBP1 overexpression had no effect on the mRNA levels of PDE1A, 1C, 2A, 3A, 4A, 4B, 4D, 7A and 8B subtypes, but resulted in increased PDE3B expression. CUGBP1 was found to directly bind to a specific ATTTGTT sequence residing in the 3' UTR of PDE3B and stabilised PDE3B mRNA. In the presence of the PDE3 inhibitor cilostamide, glucose- and GLP-1-stimulated insulin secretion was no longer reduced by CUGBP1 overexpression. Similar to CUGBP1, PDE3B was overexpressed in the islets of diabetic mice. CONCLUSIONS/INTERPRETATION We conclude that CUGBP1 is a critical regulator of insulin secretion via activating PDE3B. Repressing this protein might provide a potential strategy for treating type 2 diabetes.
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Affiliation(s)
- Kui Zhai
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China
| | - Lei Gu
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China
| | - Zhiguang Yang
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China
| | - Yang Mao
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China
| | - Meng Jin
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China
| | - Yan Chang
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China
| | - Qi Yuan
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China
| | - Veronique Leblais
- Inserm, UMR-S 1180, Faculté de Pharmacie, Université Paris-Sud, 5 rue J.-B. Clément, 92296, Châtenay-Malabry, France
| | - Huiwen Wang
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, People's Republic of China
| | - Rodolphe Fischmeister
- Inserm, UMR-S 1180, Faculté de Pharmacie, Université Paris-Sud, 5 rue J.-B. Clément, 92296, Châtenay-Malabry, France.
| | - Guangju Ji
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China.
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Zheng J, Zhai K, Chen Y, Zhang X, Miao L, Wei B, Ji G. Nitric oxide mediates stretch-induced Ca2+ oscillation in smooth muscle. J Cell Sci 2016; 129:2430-7. [DOI: 10.1242/jcs.180638] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Accepted: 03/23/2016] [Indexed: 11/20/2022] Open
Abstract
The stretching of smooth muscle tissue modulates contraction via augmentation of Ca2+ transients, but the mechanism underlying stretch-induced Ca2+ transients is still unknown. We found that mechanical stretching and maintenance of mouse urinary bladder smooth muscle strips and single myocytes at the initial length of 30% and 18%, respectively, resulted in Ca2+ oscillations. Experiments indicated that mechanical stretching remarkably increases the production of nitric oxide (NO) as well as the amplitude and duration of muscle contraction. Stretch-induced Ca2+ oscillations and contractility increases were completely abolished by NO inhibitor L-NAME or eNOS gene inactivation. Moreover, exposure of eNOS knockout myocytes to exogenous NO donor induced Ca2+ oscillations. The stretch-induced Ca2+ oscillations were greatly inhibited by selective IP3R inhibitor xestospongin C and partially inhibited by ryanodine. Moreover, the stretch-induced Ca2+ oscillations were also suppressed by LY294002, but not by the soluble guanylyl cyclase (sGC) inhibitor ODQ. These results suggest that myocytes stretching and maintenance at a certain length resulted in Ca2+ oscillations that is NO dependent and sGC/cGMP independent and results from the activation of PI(3)K in smooth muscle.
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Affiliation(s)
- Ji Zheng
- Urological Surgery Research Institute, Southwest Hospital, Third Military Medical University, Gao Tanyan Rd. 30, Chongqing 400038, China
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, 15 Datun Rd, Beijing 100101, China
| | - Kui Zhai
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, 15 Datun Rd, Beijing 100101, China
| | - Yingxiao Chen
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, 15 Datun Rd, Beijing 100101, China
| | - Xu Zhang
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, 15 Datun Rd, Beijing 100101, China
| | - Lin Miao
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, 15 Datun Rd, Beijing 100101, China
| | - Bin Wei
- Department of Physiology, Wayne State University School of Medicine, Detroit, MI 48201, United States
| | - Guangju Ji
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, 15 Datun Rd, Beijing 100101, China
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Dai J, Zhang H, Chen Y, Chang Y, Yuan Q, Ji G, Zhai K. Characterization of Ca+ handling proteins and contractile proteins in patients with lone atrial fibrillation. Int J Cardiol 2015; 202:749-51. [PMID: 26474465 DOI: 10.1016/j.ijcard.2015.10.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Revised: 09/03/2015] [Accepted: 10/03/2015] [Indexed: 11/30/2022]
Affiliation(s)
- Jiang Dai
- Department of Cardiac Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Han Zhang
- Department of Cardiac Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Yingxiao Chen
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Yan Chang
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Qi Yuan
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Guangju Ji
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.
| | - Kui Zhai
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.
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Qian WF, Yan WC, Wang TQ, Shao XD, Zhai K, Han LF, Lv CC. Genetic characterization of Toxoplasma gondii from domestic animals in central China. Trop Biomed 2015; 32:540-544. [PMID: 26695215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Toxoplasma gondii is an obligate intracellular parasite that has a remarkable ability to infect almost all warm-blooded animals, including humans. This study was aimed to determine the genetic characteristics of T. gondii isolates from domestic animals in Henan Province, central China. A total of 363 DNA samples, including 208 from hilar lymph nodes of pigs, 36 from blood samples of cats, 12 from tissues of aborted bovine fetuses and 107 from blood samples of dams with history of abortion in Henan Province, were examined for the presence of T. gondii by nested PCR based on B1 gene. The positive DNA samples were further genotyped by PCR-RFLP at 11 markers, including SAG1, (3'+ 5') SAG2, alt.SAG2, SAG3, BTUB, GRA6, c22-8, c29-2, L358, PK1, and Apico. DNA samples from 9 pigs, 5 cats, and 4 dairy cows were T. gondii B1 gene positive. Nine samples were successfully genotyped at all genetic loci, of which 5 samples from pigs, and 2 from cats were identified as ToxoDB genotype #9, and 2 samples from cows belonged to ToxoDB genotype #225. To our knowledge, the present study is the second report of genetic typing of T. gondii isolates from cattle in China, and the first report of T. gondii ToxoDB#225 from cattle.
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Affiliation(s)
- W F Qian
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - W C Yan
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - T Q Wang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - X D Shao
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - K Zhai
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - L F Han
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - C C Lv
- PuLike Biological Engineering Co., Ltd, Luoyang, China
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Hubert F, Belacel-Ouari M, Manoury B, Zhai K, Domergue-Dupont V, Mateo P, Joubert F, Fischmeister R, Leblais V. Alteration of vascular reactivity in heart failure: role of phosphodiesterases 3 and 4. Br J Pharmacol 2015; 171:5361-75. [PMID: 25048877 DOI: 10.1111/bph.12853] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Revised: 06/24/2014] [Accepted: 07/12/2014] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND AND PURPOSE This study examined the role of the main vascular cAMP-hydrolysing phosphodiesterases (cAMP-PDE) in the regulation of basal vascular tone and relaxation of rat aorta mediated by β-adrenoceptors, following heart failure (HF). EXPERIMENTAL APPROACH Twenty-two weeks after proximal aortic stenosis, to induce HF, or SHAM surgery in rats, we evaluated the expression, activity and function of cAMP-PDE in the descending thoracic aorta. KEY RESULTS HF rat aortas exhibited signs of endothelial dysfunction, with alterations of the NO pathway, and alteration of PDE3 and PDE4 subtype expression, without changing total aortic cAMP-hydrolytic activity and PDE1, PDE3 and PDE4 activities. Vascular reactivity experiments using PDE inhibitors showed that PDE3 and PDE4 controlled the level of PGF2α -stimulated contraction in SHAM aorta. PDE3 function was partially inhibited by endothelial NO, whereas PDE4 function required a functional endothelium and was under the negative control of PDE3. In HF, PDE3 function was preserved, but its regulation by endothelial NO was altered. PDE4 function was abolished and restored by PDE3 inhibition. In PGF2α -precontracted arteries, β-adrenoceptor stimulation-induced relaxation in SHAM aorta, which was abolished in the absence of functional endothelium, as well as in HF aortas, but restored after PDE3 inhibition in all unresponsive arteries. CONCLUSIONS AND IMPLICATIONS Our study underlines the key role of the endothelium in controlling the contribution of smooth muscle PDE to contractile function. In HF, endothelial dysfunction had a major effect on PDE3 function and PDE3 inhibition restored a functional relaxation to β-adrenoceptor stimulation.
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Affiliation(s)
- F Hubert
- Faculté de Pharmacie, Inserm UMR-S 769, LabEx LERMIT-DHU TORINO, Châtenay-Malabry, France; Faculté de Pharmacie, Université Paris-Sud, Châtenay-Malabry, France; Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Canada
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Wei MY, Xue L, Tan L, Sai WB, Liu XC, Jiang QJ, Shen J, Peng YB, Zhao P, Yu MF, Chen W, Ma LQ, Zhai K, Zou C, Guo D, Qin G, Zheng YM, Wang YX, Ji G, Liu QH. Involvement of large-conductance Ca2+-activated K+ channels in chloroquine-induced force alterations in pre-contracted airway smooth muscle. PLoS One 2015; 10:e0121566. [PMID: 25822280 PMCID: PMC4378962 DOI: 10.1371/journal.pone.0121566] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2014] [Accepted: 02/13/2015] [Indexed: 02/06/2023] Open
Abstract
The participation of large-conductance Ca2+ activated K+ channels (BKs) in chloroquine (chloro)-induced relaxation of precontracted airway smooth muscle (ASM) is currently undefined. In this study we found that iberiotoxin (IbTx, a selective inhibitor of BKs) and chloro both completely blocked spontaneous transient outward currents (STOCs) in single mouse tracheal smooth muscle cells, which suggests that chloro might block BKs. We further found that chloro inhibited Ca2+ sparks and caffeine-induced global Ca2+ increases. Moreover, chloro can directly block single BK currents completely from the intracellular side and partially from the extracellular side. All these data indicate that the chloro-induced inhibition of STOCs is due to the blockade of chloro on both BKs and ryanodine receptors (RyRs). We also found that low concentrations of chloro resulted in additional contractions in tracheal rings that were precontracted by acetylcholine (ACH). Increases in chloro concentration reversed the contractile actions to relaxations. In the presence of IbTx or paxilline (pax), BK blockers, chloro-induced contractions were inhibited, although the high concentrations of chloro-induced relaxations were not affected. Taken together, our results indicate that chloro blocks BKs and RyRs, resulting in abolishment of STOCs and occurrence of contraction, the latter will counteract the relaxations induced by high concentrations of chloro.
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Affiliation(s)
- Ming-Yu Wei
- Institute for Medical Biology & Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China, College of Life Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Lu Xue
- Institute for Medical Biology & Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China, College of Life Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Li Tan
- Institute for Medical Biology & Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China, College of Life Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Wen-Bo Sai
- Institute for Medical Biology & Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China, College of Life Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Xiao-Cao Liu
- Institute for Medical Biology & Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China, College of Life Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Qiu-Ju Jiang
- Institute for Medical Biology & Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China, College of Life Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Jinhua Shen
- Institute for Medical Biology & Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China, College of Life Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Yong-Bo Peng
- Institute for Medical Biology & Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China, College of Life Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Ping Zhao
- Institute for Medical Biology & Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China, College of Life Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Meng-Fei Yu
- Institute for Medical Biology & Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China, College of Life Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Weiwei Chen
- Institute for Medical Biology & Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China, College of Life Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Li-Qun Ma
- Institute for Medical Biology & Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China, College of Life Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Kui Zhai
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Chunbin Zou
- Department of Medicine, Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA 15213, United States of America
| | - Donglin Guo
- Lankenau Institute for Medical Research & Main Line Health Heart Center, 100 Lancaster Avenue, Wynnewood, PA 19096, United States of America
| | - Gangjian Qin
- Department of Medicine-Cardiology, Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, United States of America
| | - Yun-Min Zheng
- Center for Cardiovascular Sciences, Albany Medical College, Albany, NY 12208, United States of America
| | - Yong-Xiao Wang
- Center for Cardiovascular Sciences, Albany Medical College, Albany, NY 12208, United States of America
| | - Guangju Ji
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
- * E-mail: (QHL); (GJ)
| | - Qing-Hua Liu
- Institute for Medical Biology & Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China, College of Life Sciences, South-Central University for Nationalities, Wuhan 430074, China
- * E-mail: (QHL); (GJ)
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Tang Y, Yin Y, Miao L, Wei B, Zhai K, Ji G. Nitric oxide enhances extracellular ATP induced Ca²⁺ oscillation in HeLa cells. Arch Biochem Biophys 2014; 565:68-75. [PMID: 25461674 DOI: 10.1016/j.abb.2014.11.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Revised: 11/11/2014] [Accepted: 11/14/2014] [Indexed: 01/29/2023]
Abstract
Calcium (Ca(2+)) oscillations play a central role in varieties of cellular processes including fertilization and immune response, but controversy over the regulation mechanisms still exists. It has been known that nitric oxide (NO) dependently regulates Ca(2+) signaling in most physiopathological processes. Previous study indicated that eNOS translocation during some pathological process influences intracellular Ca(2+) homeostasis. In this study, we investigated the role and mechanism of NO on Ca(2+) release by overexpressing eNOS in cytoplasm (Cyto-eNOS) and endoplasmic reticulum (ER-eNOS) of HeLa cells. We found that the properties of Ca(2+) release were altered by the overexpression of eNOS. The amplitude and frequency of extracellular ATP (eATP)-induced Ca(2+) oscillation were enhanced in both Cyto-eNOS and ER-eNOS cells, respectively. Especially, the enhancement of the amplitude and frequency of the Ca(2+) oscillation was much more significant in the ER-eNOS cells than that of Cyto-eNOS cells. Further study indicated that this effect was abrogated by NO inhibitor, L-NAME, suggesting it was not an artificial result induced by ER stress. Furthermore, an up-regulated phosphorylation of phospholamban (PLB) was observed and the sarco-endoplasmic reticulum Ca(2+)-ATPase (SERCA) function was activated followed by the significant increase in the ER Ca(2+) load. Taken together, we revealed a novel regulatory mechanism of Ca(2+) oscillation.
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Affiliation(s)
- Yinglong Tang
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China; University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Yin Yin
- General Hospital of Air Force, Stomatology, Beijing, China
| | - Lin Miao
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Bin Wei
- Department of Physiology, Wayne State University School of Medicine, Detroit, MI 48201, United States
| | - Kui Zhai
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Guangju Ji
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.
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Zhang T, Luo XJ, Sai WB, Yu MF, Li WE, Ma YF, Chen W, Zhai K, Qin G, Guo D, Zheng YM, Wang YX, Shen JH, Ji G, Liu QH. Non-selective cation channels mediate chloroquine-induced relaxation in precontracted mouse airway smooth muscle. PLoS One 2014; 9:e101578. [PMID: 24992312 PMCID: PMC4081631 DOI: 10.1371/journal.pone.0101578] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Accepted: 06/06/2014] [Indexed: 02/01/2023] Open
Abstract
Bitter tastants can induce relaxation in precontracted airway smooth muscle by activating big-conductance potassium channels (BKs) or by inactivating voltage-dependent L-type Ca2+ channels (VDLCCs). In this study, a new pathway for bitter tastant-induced relaxation was defined and investigated. We found nifedipine-insensitive and bitter tastant chloroquine-sensitive relaxation in epithelium-denuded mouse tracheal rings (TRs) precontracted with acetylcholine (ACH). In the presence of nifedipine (10 µM), ACH induced cytosolic Ca2+ elevation and cell shortening in single airway smooth muscle cells (ASMCs), and these changes were inhibited by chloroquine. In TRs, ACH triggered a transient contraction under Ca2+-free conditions, and, following a restoration of Ca2+, a strong contraction occurred, which was inhibited by chloroquine. Moreover, the ACH-activated whole-cell and single channel currents of non-selective cation channels (NSCCs) were blocked by chloroquine. Pyrazole 3 (Pyr3), an inhibitor of transient receptor potential C3 (TRPC3) channels, partially inhibited ACH-induced contraction, intracellular Ca2+ elevation, and NSCC currents. These results demonstrate that NSCCs play a role in bitter tastant-induced relaxation in precontracted airway smooth muscle.
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Affiliation(s)
- Ting Zhang
- Institute for Medical Biology & Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China, College of Life Sciences, South-Central University for Nationalities, Wuhan, China
| | - Xiao-Jing Luo
- Institute for Medical Biology & Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China, College of Life Sciences, South-Central University for Nationalities, Wuhan, China
| | - Wen-Bo Sai
- Institute for Medical Biology & Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China, College of Life Sciences, South-Central University for Nationalities, Wuhan, China
| | - Meng-Fei Yu
- Institute for Medical Biology & Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China, College of Life Sciences, South-Central University for Nationalities, Wuhan, China
| | - Wen-Er Li
- Institute for Medical Biology & Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China, College of Life Sciences, South-Central University for Nationalities, Wuhan, China
| | - Yun-Fei Ma
- Institute for Medical Biology & Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China, College of Life Sciences, South-Central University for Nationalities, Wuhan, China
| | - Weiwei Chen
- Institute for Medical Biology & Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China, College of Life Sciences, South-Central University for Nationalities, Wuhan, China
| | - Kui Zhai
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Gangjian Qin
- Department of Medicine-Cardiology, Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, Chicago, Illinois, United States of America
| | - Donglin Guo
- Institute for Medical Biology & Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China, College of Life Sciences, South-Central University for Nationalities, Wuhan, China
- Lankenau Institute for Medical Research & Main Line Health Heart Center, Wynnewood, Pennsylvania, United States of America
| | - Yun-Min Zheng
- Center for Cardiovascular Sciences, Albany Medical College, Albany, New York, United States of America
| | - Yong-Xiao Wang
- Center for Cardiovascular Sciences, Albany Medical College, Albany, New York, United States of America
| | - Jin-Hua Shen
- Institute for Medical Biology & Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China, College of Life Sciences, South-Central University for Nationalities, Wuhan, China
| | - Guangju Ji
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
- * E-mail: (QHL); (GJ)
| | - Qing-Hua Liu
- Institute for Medical Biology & Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China, College of Life Sciences, South-Central University for Nationalities, Wuhan, China
- * E-mail: (QHL); (GJ)
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Zhai K, Chang Y, Wei B, Liu Q, Leblais V, Fischmeister R, Ji G. Phosphodiesterase types 3 and 4 regulate the phasic contraction of neonatal rat bladder smooth myocytes via distinct mechanisms. Cell Signal 2014; 26:1001-10. [PMID: 24463006 DOI: 10.1016/j.cellsig.2014.01.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Revised: 12/20/2013] [Accepted: 01/06/2014] [Indexed: 11/28/2022]
Abstract
Activation of the cyclic AMP (cAMP) pathway reduces bladder contractility. However, the role of phosphodiesterase (PDE) families in regulating this function is poorly understood. Here, we compared the contractile function of the cAMP hydrolyzing PDEs in neonatal rat bladder smooth myocytes. RT-PCR and Western blotting analysis revealed that several isoforms of PDE1-4 were expressed in neonatal rat bladder. While 8-methoxymethyl-3-isobutyl-1-methylxanthine (a PDE1 inhibitor) and BAY-60-7550 (a PDE2 inhibitor) had no effect on the carbachol-enhanced phasic contractions of bladder strips, cilostamide (Cil, a PDE3 inhibitor) and Ro-20-1724 (Ro, a PDE4 inhibitor) significantly reduced these contractions. This inhibitory effect of Ro was blunted by the PKA inhibitor H-89, while the inhibitory effect of Cil was strongly attenuated by the PKG inhibitor KT 5823. Application of Ro in single bladder smooth myocytes resulted in an increase in Ca(2+) spark frequency but a decrease both in Ca(2+) transients and in sarcoplasmic reticulum (SR) Ca(2+) content. In contrast, Cil had no effect on these events. Furthermore, Ro-induced inhibition of the phasic contractions was significantly blocked by ryanodine and iberiotoxin. Taken together, PDE3 and PDE4 are the main PDE isoforms in maintaining the phasic contractions of bladder smooth myocytes, with PDE4 being functionally more active than PDE3. However, their roles are mediated through different mechanisms.
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Affiliation(s)
- Kui Zhai
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China; Inserm UMR-S 769, LabEx LERMIT, F-92296 Châtenay-Malabry, France; Université Paris-Sud, Faculté de Pharmacie, F-92296 Châtenay-Malabry, France
| | - Yan Chang
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Bin Wei
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Qinghua Liu
- Institute for Medical Biology, College of Life Sciences, South-Central University for Nationalities, Wuhan, China
| | - Véronique Leblais
- Inserm UMR-S 769, LabEx LERMIT, F-92296 Châtenay-Malabry, France; Université Paris-Sud, Faculté de Pharmacie, F-92296 Châtenay-Malabry, France
| | - Rodolphe Fischmeister
- Inserm UMR-S 769, LabEx LERMIT, F-92296 Châtenay-Malabry, France; Université Paris-Sud, Faculté de Pharmacie, F-92296 Châtenay-Malabry, France.
| | - Guangju Ji
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.
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Zhai K, Gao G, Cao W, Zhao L, Fang X, Duan H. Simultaneous HPLC determination of four active compounds in fengshiding capsules, a chinese medicine. Indian J Pharm Sci 2014; 76:445-9. [PMID: 25425759 PMCID: PMC4243262] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2013] [Revised: 07/16/2014] [Accepted: 07/22/2014] [Indexed: 11/23/2022] Open
Abstract
A high performance liquid chromatography method was established for simultaneously determining four bioactive components, salicin, liquiritin, paeonolum, and imperatorin in Fengshiding capsule, a widely used traditional Chinese medicine for treating rheumatic disease. The chromatographic separation was performed on a Shimadzu Shim-pack Stable Bond C18 column using gradient elution with methanol and water. The analytical method was validated through precision, repeatability and stability, and the relative standard deviation values were less than 3%, respectively. The recoveries of the four investigated compounds ranged from 95.80 to 101.21% with relative standard deviation values less than 3.2%. Then this proposed method was successfully applied to determine six batches of Fengshiding commercial products of capsule dosage form from two pharmaceutical factories. This study might provide a basis for quality control for this traditional Chinese medicine preparation.
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Affiliation(s)
- K. Zhai
- Department of Complex Prescrition of TCM, China Pharmaceutical University, Nanjing-210 038, China
| | - G. Gao
- Department of Chemistry and Life Science, Suzhou University, Suzhou-234 000, China
| | - W. Cao
- Department of Chemistry and Life Science, Suzhou University, Suzhou-234 000, China
| | - L. Zhao
- Department of Chemistry and Life Science, Suzhou University, Suzhou-234 000, China
| | - X. Fang
- Department of Chemistry and Life Science, Suzhou University, Suzhou-234 000, China
| | - H. Duan
- Department of Chemistry and Life Science, Suzhou University, Suzhou-234 000, China,Address for correspondence E-mail:
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Gota H, Tuszewski M, Smirnov A, Korepanov S, Akhmetov T, Ivanov A, Voskoboynikov R, Binderbauer MW, Guo HY, Barnes D, Aefsky S, Brown R, Bui DQ, Clary R, Conroy KD, Deng BH, Dettrick SA, Douglass JD, Garate E, Glass FJ, Gupta D, Gupta S, Kinley JS, Knapp K, Hollins M, Longman A, Li XL, Luo Y, Mendoza R, Mok Y, Necas A, Primavera S, Osin D, Rostoker N, Ruskov E, Schmitz L, Schroeder JH, Sevier L, Sibley A, Song Y, Sun X, Tajima T, Thompson MC, Trask E, Van Drie AD, Walters JK, Wyman MD, Zhai K. A High Performance Field-Reversed Configuration Regime in the C-2 Device. Fusion Science and Technology 2013. [DOI: 10.13182/fst13-a16890] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- H. Gota
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - M. Tuszewski
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - A. Smirnov
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - S. Korepanov
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - T. Akhmetov
- Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia
| | - A. Ivanov
- Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia
| | - R. Voskoboynikov
- Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia
| | - M. W. Binderbauer
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - H. Y. Guo
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - D. Barnes
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - S. Aefsky
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - R. Brown
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - D. Q. Bui
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - R. Clary
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - K. D. Conroy
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - B. H. Deng
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - S. A. Dettrick
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - J. D. Douglass
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - E. Garate
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - F. J. Glass
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - D. Gupta
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - S. Gupta
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - J. S. Kinley
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - K. Knapp
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - M. Hollins
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - A. Longman
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - X. L. Li
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - Y. Luo
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - R. Mendoza
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - Y. Mok
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - A. Necas
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - S. Primavera
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - D. Osin
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - N. Rostoker
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - E. Ruskov
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - L. Schmitz
- Department of Physics and Astronomy, UCLA, Los Angeles, CA 90095, USA
| | - J. H. Schroeder
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - L. Sevier
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - A. Sibley
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - Y. Song
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - X. Sun
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - T. Tajima
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - M. C. Thompson
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - E. Trask
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - A. D. Van Drie
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - J. K. Walters
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - M. D. Wyman
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
| | - K. Zhai
- Tri Alpha Energy Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688, USA
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Zhai K, Hubert F, Nicolas V, Ji G, Fischmeister R, Leblais V. β-Adrenergic cAMP signals are predominantly regulated by phosphodiesterase type 4 in cultured adult rat aortic smooth muscle cells. PLoS One 2012; 7:e47826. [PMID: 23094097 PMCID: PMC3475707 DOI: 10.1371/journal.pone.0047826] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Accepted: 09/17/2012] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND We investigated the role of cyclic nucleotide phosphodiesterases (PDEs) in the spatiotemporal control of intracellular cAMP concentrations in rat aortic smooth muscle cells (RASMCs). METHODOLOGY/PRINCIPAL FINDINGS The rank order of PDE families contributing to global cAMP-PDE activity was PDE4> PDE3 = PDE1. PDE7 mRNA expression but not activity was confirmed. The Fluorescence Resonance Energy Transfer (FRET)-based cAMP sensor, Epac1-camps, was used to monitor the time course of cytosolic cAMP changes. A pulse application of the β-adrenoceptor (β-AR) agonist isoproterenol (Iso) induced a transient FRET signal. Both β(1)- and β(2)-AR antagonists decreased the signal amplitude without affecting its kinetics. The non-selective PDE inhibitor (IBMX) dramatically increased the amplitude and delayed the recovery phase of Iso response, in agreement with a role of PDEs in degrading cAMP produced by Iso. Whereas PDE1, PDE3 and PDE7 blockades [with MIMX, cilostamide (Cil) and BRL 50481 (BRL), respectively] had no or minor effect on Iso response, PDE4 inhibition [with Ro-20-1724 (Ro)] strongly increased its amplitude and delayed its recovery. When Ro was applied concomitantly with MIMX or Cil (but not with BRL), the Iso response was drastically further prolonged. PDE4 inhibition similarly prolonged both β(1)- and β(2)-AR-mediated responses. When a membrane-targeted FRET sensor was used, PDE3 and PDE4 acted in a synergistic manner to hydrolyze the submembrane cAMP produced either at baseline or after β-AR stimulation. CONCLUSION/SIGNIFICANCE Our study underlines the importance of cAMP-PDEs in the dynamic control of intracellular cAMP signals in RASMCs, and demonstrates the prominent role of PDE4 in limiting β-AR responses. PDE4 inhibition unmasks an effect of PDE1 and PDE3 on cytosolic cAMP hydrolyzis, and acts synergistically with PDE3 inhibition at the submembrane compartment. This suggests that mixed PDE4/PDE1 or PDE4/PDE3 inhibitors would be attractive to potentiate cAMP-related functions in vascular cells.
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MESH Headings
- Adrenergic beta-Agonists/pharmacology
- Adrenergic beta-Antagonists/pharmacology
- Animals
- Aorta/cytology
- Aorta/drug effects
- Aorta/metabolism
- Cell Membrane/drug effects
- Cell Membrane/enzymology
- Cyclic AMP/metabolism
- Cyclic Nucleotide Phosphodiesterases, Type 1/antagonists & inhibitors
- Cyclic Nucleotide Phosphodiesterases, Type 1/metabolism
- Cyclic Nucleotide Phosphodiesterases, Type 3/metabolism
- Cyclic Nucleotide Phosphodiesterases, Type 4/metabolism
- Cyclic Nucleotide Phosphodiesterases, Type 7/metabolism
- Fluorescence Resonance Energy Transfer
- Isoproterenol/pharmacology
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/enzymology
- Myocytes, Smooth Muscle/cytology
- Myocytes, Smooth Muscle/drug effects
- Myocytes, Smooth Muscle/enzymology
- Phosphodiesterase Inhibitors/pharmacology
- Primary Cell Culture
- Rats
- Signal Transduction/drug effects
- Signal Transduction/physiology
- Time Factors
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Affiliation(s)
- Kui Zhai
- Inserm UMR-S 769, LabEx LERMIT, Châtenay-Malabry, France
- Université Paris-Sud, Faculté de Pharmacie, Châtenay-Malabry, France
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Fabien Hubert
- Inserm UMR-S 769, LabEx LERMIT, Châtenay-Malabry, France
- Université Paris-Sud, Faculté de Pharmacie, Châtenay-Malabry, France
| | - Valérie Nicolas
- Université Paris-Sud, Faculté de Pharmacie, Châtenay-Malabry, France
- IPSIT IFR141, Plate-forme Imagerie Cellulaire, Châtenay-Malabry, France
| | - Guangju Ji
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Rodolphe Fischmeister
- Inserm UMR-S 769, LabEx LERMIT, Châtenay-Malabry, France
- Université Paris-Sud, Faculté de Pharmacie, Châtenay-Malabry, France
| | - Véronique Leblais
- Inserm UMR-S 769, LabEx LERMIT, Châtenay-Malabry, France
- Université Paris-Sud, Faculté de Pharmacie, Châtenay-Malabry, France
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Abstract
Chrysin (5,7-dihydroxyflavone) is a natural flavone commonly found in many plants including PASSIFLORA COERULEA L. Researchers have performed extensive and detailed investigations on the behavioral and pharmacological effects of chrysin IN VIVO, but there was little information available on the effect of chrysin on nociception. Therefore, the present study was undertaken to investigate the effect of chrysin on the nociceptive threshold using the tail-immersion test. Intraperitoneal ( I. P.) injection of chrysin (10, 25, 50, 75, 100 mg/kg) dose- and time-dependently induced a pronounced decrease of the tail withdrawal latencies (TWL), thus characterizing a hyperalgesic effect (ED50 = 65.59 mg/kg). The following results showed that GABAA receptors were involved in the hyperalgesic effects of chrysin. 1) The hyperalgesia induced by chrysin was significantly and dose-dependently blocked by pretreatment with flumazenil (0.75, 1 mg/kg, I. P.), a specific antagonist for benzodiazepine sites associated with GABAA receptors. 2) Bicuculline (2, 4 mg/kg, I. P.), a GABAA receptor antagonist, markedly antagonized the hyperalgesic effect of chrysin in a dose-dependent manner. 3) Picrotoxin (2 mg/kg, I. P.), a chloride channel blocker, could also notably antagonize the hyperalgesia of chrysin. Oral administration of chrysin (75 mg/kg) also produced a hyperalgesic effect in the tail-immersion test. In addition, diazepam (1 mg/kg, I. P.) showed a marked antinociceptive effect, which was completely blocked by flumazenil (1 mg/kg, I. P.). In conclusion, it can be summarized that both I. P. and oral administration of chrysin produced a significant hyperalgesic effect in the tail-immersion test and that the hyperalgesic effect of chrysin may be associated with GABAA receptors.
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Affiliation(s)
- Kui Zhai
- Institute of Biochemistry and Molecular Biology, School of Life Science, Lanzhou University, Lanzhou, P R China
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Canik JM, Anderson DT, Anderson FSB, Likin KM, Talmadge JN, Zhai K. Experimental demonstration of improved neoclassical transport with quasihelical symmetry. Phys Rev Lett 2007; 98:085002. [PMID: 17359105 DOI: 10.1103/physrevlett.98.085002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2006] [Indexed: 05/14/2023]
Abstract
Differences in the electron particle and thermal transport are reported between plasmas produced in a quasihelically symmetric (QHS) magnetic field and a configuration with the symmetry broken. The thermal diffusivity is reduced in the QHS configuration, resulting in higher electron temperatures than in the nonsymmetric configuration for a fixed power input. The density profile in QHS plasmas is centrally peaked, and in the nonsymmetric configuration the core density profile is hollow. The hollow profile is due to neoclassical thermodiffusion, which is reduced in the QHS configuration.
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Affiliation(s)
- J M Canik
- Department of Electrical and Computer Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, WI 53706, USA
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Fu CY, Kong ZQ, Wang KR, Yang Q, Zhai K, Chen Q, Wang R. Effects and mechanisms of supraspinal administration of rat/mouse hemokinin-1, a mammalian tachykinin peptide, on nociception in mice. Brain Res 2005; 1056:51-8. [PMID: 16102736 DOI: 10.1016/j.brainres.2005.07.020] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [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: 06/10/2005] [Revised: 07/13/2005] [Accepted: 07/13/2005] [Indexed: 10/25/2022]
Abstract
Rat/mouse hemokinin 1 (r/m HK-1) is a novel tachykinin peptide whose biological functions are not fully understood. This work was designed to observe the effects of r/m HK-1 in pain modulation at supraspinal level in mice using tail-flick test. Intracerebroventricular (i.c.v.) administration of r/m HK-1 (0.1, 0.3, 1, 3 nmol/mouse) dose-dependently induced potent analgesic effect (ED(50) = 0.2877 nmol/mouse). When r/m HK-1 co-injected (i.c.v.) with SR140333 (a selective NK(1) receptor antagonist), SR140333 could fully antagonize the analgesic effect of r/m HK-1. The maximal analgesic effect of r/m HK-1 (3 nmol/mouse) could also be reversed by naloxone (i.p., 2 mg/kg). However, i.c.v. low dose administration of r/m HK-1 (10, 3, 1 pmol/mouse) induced hyperalgesia with a "U" shape curve, which means that the maximal hyperalgesic effect appeared at 3 pmol/mouse, and this effect of r/m HK-1 could also be fully blocked by SR140333. Interestingly, [Nphe(1)]NC(1-13)NH(2), a selective opioid receptor like-1 (ORL-1) receptor antagonist, could fully reverse the maximal hyperalgesic effect of r/m HK-1 (3 pmol/mouse). In addition, when r/m HK-1 co-injected (i.c.v.) with SR48968 (a selective NK(2) receptor antagonist), SR48968 could hardly affect the nociceptive effects of r/m HK-1 either at nanomole concentration or at picomole concentration. These findings suggested that r/m HK-1 might play an important role in pain modulation at supraspinal level in mice and these effects were first elicited through the activation of NK(1) receptor, subsequently, whether activation of the classical opioid receptor or the ORL1 receptor depending on the dose of i.c.v. administration of r/m HK-1.
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Affiliation(s)
- Cai-Yun Fu
- Department of Biochemistry and Molecular Biology, School of Life Science, Lanzhou University, 222 Tian Shui South Road, Lanzhou 730000, People's Republic of China
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