51
|
Hutchings CJ, Colussi P, Clark TG. Ion channels as therapeutic antibody targets. MAbs 2018; 11:265-296. [PMID: 30526315 PMCID: PMC6380435 DOI: 10.1080/19420862.2018.1548232] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 11/01/2018] [Accepted: 11/03/2018] [Indexed: 12/12/2022] Open
Abstract
It is now well established that antibodies have numerous potential benefits when developed as therapeutics. Here, we evaluate the technical challenges of raising antibodies to membrane-spanning proteins together with enabling technologies that may facilitate the discovery of antibody therapeutics to ion channels. Additionally, we discuss the potential targeting opportunities in the anti-ion channel antibody landscape, along with a number of case studies where functional antibodies that target ion channels have been reported. Antibodies currently in development and progressing towards the clinic are highlighted.
Collapse
Affiliation(s)
| | | | - Theodore G. Clark
- TetraGenetics Inc, Arlington Massachusetts, USA
- Department of Microbiology and Immunology, Cornell University, Ithaca New York, USA
| |
Collapse
|
52
|
Prevarskaya N, Skryma R, Shuba Y. Ion Channels in Cancer: Are Cancer Hallmarks Oncochannelopathies? Physiol Rev 2018; 98:559-621. [PMID: 29412049 DOI: 10.1152/physrev.00044.2016] [Citation(s) in RCA: 272] [Impact Index Per Article: 45.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Genomic instability is a primary cause and fundamental feature of human cancer. However, all cancer cell genotypes generally translate into several common pathophysiological features, often referred to as cancer hallmarks. Although nowadays the catalog of cancer hallmarks is quite broad, the most common and obvious of them are 1) uncontrolled proliferation, 2) resistance to programmed cell death (apoptosis), 3) tissue invasion and metastasis, and 4) sustained angiogenesis. Among the genes affected by cancer, those encoding ion channels are present. Membrane proteins responsible for signaling within cell and among cells, for coupling of extracellular events with intracellular responses, and for maintaining intracellular ionic homeostasis ion channels contribute to various extents to pathophysiological features of each cancer hallmark. Moreover, tight association of these hallmarks with ion channel dysfunction gives a good reason to classify them as special type of channelopathies, namely oncochannelopathies. Although the relation of cancer hallmarks to ion channel dysfunction differs from classical definition of channelopathies, as disease states causally linked with inherited mutations of ion channel genes that alter channel's biophysical properties, in a broader context of the disease state, to which pathogenesis ion channels essentially contribute, such classification seems absolutely appropriate. In this review the authors provide arguments to substantiate such point of view.
Collapse
Affiliation(s)
- Natalia Prevarskaya
- INSERM U-1003, Equipe Labellisée par la Ligue Nationale contre le Cancer et LABEX, Université Lille1 , Villeneuve d'Ascq , France ; Bogomoletz Institute of Physiology and International Center of Molecular Physiology, NASU, Kyiv-24, Ukraine
| | - Roman Skryma
- INSERM U-1003, Equipe Labellisée par la Ligue Nationale contre le Cancer et LABEX, Université Lille1 , Villeneuve d'Ascq , France ; Bogomoletz Institute of Physiology and International Center of Molecular Physiology, NASU, Kyiv-24, Ukraine
| | - Yaroslav Shuba
- INSERM U-1003, Equipe Labellisée par la Ligue Nationale contre le Cancer et LABEX, Université Lille1 , Villeneuve d'Ascq , France ; Bogomoletz Institute of Physiology and International Center of Molecular Physiology, NASU, Kyiv-24, Ukraine
| |
Collapse
|
53
|
TROY interacts with RKIP to promote glioma development. Oncogene 2018; 38:1544-1559. [PMID: 30337686 PMCID: PMC6372479 DOI: 10.1038/s41388-018-0503-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Revised: 08/16/2018] [Accepted: 08/29/2018] [Indexed: 11/19/2022]
Abstract
TROY is a component of the Nogo receptor complex and plays the key role in neuronal survival, migration, and differentiation. Here, we show the up-regulation of TROY in human glioma tissues and cells. Inhibition of TROY expression slowed glioma development in vivo and in vitro. Raf kinase inhibitor (RKIP) was found to interact with TROY. The physical interaction of TROY/RKIP was confirmed via co-immunoprecipitation (co-IP) assays. Furthermore, we found that the TROY/RKIP interaction was enhanced by fetal bovine serum (FBS) exposure, and TROY knockdown also led to down-regulation of NF-κB. Finally, disruption of the TROY/RKIP interaction using the TAT-TROY (234–371 aa) protein reduced the glioma development in xenografted mice. This suggests the TROY/RKIP interaction is a potential target for therapy of gliomas.
Collapse
|
54
|
Jardin I, Diez-Bello R, Lopez JJ, Redondo PC, Salido GM, Smani T, Rosado JA. TRPC6 Channels Are Required for Proliferation, Migration and Invasion of Breast Cancer Cell Lines by Modulation of Orai1 and Orai3 Surface Exposure. Cancers (Basel) 2018; 10:cancers10090331. [PMID: 30223530 PMCID: PMC6162527 DOI: 10.3390/cancers10090331] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Revised: 09/07/2018] [Accepted: 09/13/2018] [Indexed: 02/07/2023] Open
Abstract
Transient receptor potential channels convey signaling information from a number of stimuli to a wide variety of cellular functions, mainly by inducing changes in cytosolic Ca2+ concentration. Different members of the TRPC, TRPM and TRPV subfamilies have been reported to play a role in tumorigenesis. Here we show that the estrogen receptor positive and triple negative breast cancer cell lines, MCF7 and MDA-MB-231, respectively, exhibit enhanced expression of the TRPC6 channel as compared to the non-tumoral MCF10A cell line. In vitro TRPC6 knockdown using shRNA impaired MCF7 and MDA-MB-231 cell proliferation, migration and invasion detected by BrdU incorporation, wound healing and Boyden chamber assays, respectively. Using RNAi-mediated TRPC6 silencing as well as overexpression of the pore-dead dominant-negative TRPC6 mutant we have found that TRPC6 plays a relevant role in the activation of store-operated Ca2+ entry in the breast cancer cell lines but not in non-tumoral breast cells. Finally, we have found that TRPC6 interacts with Orai1 and Orai3 in MCF7 and MDA-MB-231 cells and is required for the translocation of Orai1 and Orai3 to the plasma membrane in MDA-MB-231 and MCF7 cells, respectively, upon Ca2+ store depletion. These findings introduce a novel mechanism for the modulation of Ca2+ influx and the development of different cancer hallmarks in breast cancer cells.
Collapse
Affiliation(s)
- Isaac Jardin
- Cellular Physiology Research Group, Department of Physiology, Institute of Molecular Pathology Biomarkers, University of Extremadura, 10003 Caceres, Spain.
| | - Raquel Diez-Bello
- Cellular Physiology Research Group, Department of Physiology, Institute of Molecular Pathology Biomarkers, University of Extremadura, 10003 Caceres, Spain.
| | - Jose J Lopez
- Cellular Physiology Research Group, Department of Physiology, Institute of Molecular Pathology Biomarkers, University of Extremadura, 10003 Caceres, Spain.
| | - Pedro C Redondo
- Cellular Physiology Research Group, Department of Physiology, Institute of Molecular Pathology Biomarkers, University of Extremadura, 10003 Caceres, Spain.
| | - Ginés M Salido
- Cellular Physiology Research Group, Department of Physiology, Institute of Molecular Pathology Biomarkers, University of Extremadura, 10003 Caceres, Spain.
| | - Tarik Smani
- Department of Medical Physiology and Biophysic, Institute of Biomedicine of Sevilla, 41013 Sevilla, Spain.
| | - Juan A Rosado
- Cellular Physiology Research Group, Department of Physiology, Institute of Molecular Pathology Biomarkers, University of Extremadura, 10003 Caceres, Spain.
| |
Collapse
|
55
|
Zhang G, Wang X, Xue Q. Combined targeted ion channel therapy: Can it be an alternative choice for esophageal cancer patients? Med Hypotheses 2018; 117:59-62. [DOI: 10.1016/j.mehy.2018.06.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2017] [Revised: 04/23/2018] [Accepted: 06/07/2018] [Indexed: 01/05/2023]
|
56
|
Xu J, Yang Y, Xie R, Liu J, Nie X, An J, Wen G, Liu X, Jin H, Tuo B. The NCX1/TRPC6 Complex Mediates TGFβ-Driven Migration and Invasion of Human Hepatocellular Carcinoma Cells. Cancer Res 2018; 78:2564-2576. [PMID: 29500176 DOI: 10.1158/0008-5472.can-17-2061] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 12/19/2017] [Accepted: 02/27/2018] [Indexed: 01/11/2023]
Abstract
TGFβ plays an important role in the progression and metastasis of hepatocellular carcinoma (HCC), yet the cellular and molecular mechanisms underlying this role are not completely understood. In this study, we investigated the roles of Na+/Ca2+ exchanger 1 (NCX1) and canonical transient receptor potential channel 6 (TRPC6) in regulating TGFβ in human HCC. In HepG2 and Huh7 cells, TGFβ-stimulated intracellular Ca2+ increases through NCX1 and TRPC6 and induced the formation of a TRPC6/NCX1 molecular complex. This complex-mediated Ca2+ signaling regulated the effect of TGFβ on the migration, invasion, and intrahepatic metastasis of human HCC cells in nude mice. TGFβ upregulated TRPC6 and NCX1 expression, and there was a positive feedback between TRPC6/NCX1 signaling and Smad signaling. Expression of both TRPC6 and NCX1 were markedly increased in native human HCC tissues, and their expression levels positively correlated with advancement of HCC in patients. These data reveal the role of the TRPC6/NCX1 molecular complex in HCC and in regulating TGFβ signaling, and they implicate TRPC6 and NCX1 as potential targets for therapy in HCC.Significance: TGFβ induces the formation and activation of a TRPC6/NCX1 molecular complex, which mediates the effects of TGFβ on the migration, invasion, and intrahepatic metastasis of HCC. Cancer Res; 78(10); 2564-76. ©2018 AACR.
Collapse
Affiliation(s)
- Jingyu Xu
- Department of Gastroenterology, Affiliated Hospital, Zunyi Medical College, Zunyi, China.,Digestive Disease Institute of Guizhou Province, Zunyi, China.,Clinical Medical Research Center of Digestive Diseases of Guizhou Province, Zunyi, China
| | - Yuan Yang
- Department of Gastroenterology, Affiliated Hospital, Zunyi Medical College, Zunyi, China.,Digestive Disease Institute of Guizhou Province, Zunyi, China.,Clinical Medical Research Center of Digestive Diseases of Guizhou Province, Zunyi, China
| | - Rui Xie
- Department of Gastroenterology, Affiliated Hospital, Zunyi Medical College, Zunyi, China.,Digestive Disease Institute of Guizhou Province, Zunyi, China.,Clinical Medical Research Center of Digestive Diseases of Guizhou Province, Zunyi, China
| | - Jilong Liu
- Department of Gastroenterology, Affiliated Hospital, Zunyi Medical College, Zunyi, China.,Digestive Disease Institute of Guizhou Province, Zunyi, China.,Clinical Medical Research Center of Digestive Diseases of Guizhou Province, Zunyi, China
| | - Xubiao Nie
- Department of Gastroenterology, Affiliated Hospital, Zunyi Medical College, Zunyi, China.,Digestive Disease Institute of Guizhou Province, Zunyi, China.,Clinical Medical Research Center of Digestive Diseases of Guizhou Province, Zunyi, China
| | - Jiaxing An
- Department of Gastroenterology, Affiliated Hospital, Zunyi Medical College, Zunyi, China.,Digestive Disease Institute of Guizhou Province, Zunyi, China.,Clinical Medical Research Center of Digestive Diseases of Guizhou Province, Zunyi, China
| | - Guorong Wen
- Department of Gastroenterology, Affiliated Hospital, Zunyi Medical College, Zunyi, China.,Digestive Disease Institute of Guizhou Province, Zunyi, China.,Clinical Medical Research Center of Digestive Diseases of Guizhou Province, Zunyi, China
| | - Xuemei Liu
- Department of Gastroenterology, Affiliated Hospital, Zunyi Medical College, Zunyi, China.,Digestive Disease Institute of Guizhou Province, Zunyi, China.,Clinical Medical Research Center of Digestive Diseases of Guizhou Province, Zunyi, China
| | - Hai Jin
- Department of Gastroenterology, Affiliated Hospital, Zunyi Medical College, Zunyi, China.,Digestive Disease Institute of Guizhou Province, Zunyi, China.,Clinical Medical Research Center of Digestive Diseases of Guizhou Province, Zunyi, China
| | - Biguang Tuo
- Department of Gastroenterology, Affiliated Hospital, Zunyi Medical College, Zunyi, China. .,Digestive Disease Institute of Guizhou Province, Zunyi, China.,Clinical Medical Research Center of Digestive Diseases of Guizhou Province, Zunyi, China
| |
Collapse
|
57
|
Inhibition of TRPC6 reduces non-small cell lung cancer cell proliferation and invasion. Oncotarget 2018; 8:5123-5134. [PMID: 28030826 PMCID: PMC5341750 DOI: 10.18632/oncotarget.14034] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Accepted: 11/11/2016] [Indexed: 11/25/2022] Open
Abstract
Recent studies indicate that the transient receptor potential canonical 6 (TRPC6) channel is highly expressed in several types of cancer cells. However, it remains unclear whether TRPC6 contributes to the malignancy of human non-small cell lung cancer (NSCLC). We used a human NSCLC A549 cell line as a model and found that pharmacological blockade or molecular knockdown of TRPC6 channel inhibited A549 cell proliferation by arresting cell cycle at the S-G2M phase and caused a significant portion of cells detached and rounded-up, but did not induce any types of cell death. Western blot and cell cycle analysis show that the detached round cells at the S-G2M phase expressed more TRPC6 than the still attached polygon cells at the G1 phase. Patch-clamp data also show that TRPC whole-cell currents in the detached cells were significantly higher than in the still attached cells. Inhibition of Ca2+-permeable TRPC6 channels significantly reduced intracellular Ca2+ in A549 cells. Interestingly, either blockade or knockdown of TRPC6 strongly reduced the invasion of this NSCLC cell line and decreased the expression of an adherent protein, fibronectin, and a tight junction protein, zonula occluden protein-1 (ZO-1). These data suggest that TRPC6-mediated elevation of intracellular Ca2+ stimulates NSCLC cell proliferation by promoting cell cycle progression and that inhibition of TRPC6 attenuates cell proliferation and invasion. Therefore, further in vivo studies may lead to a consideration of using a specific TRPC6 blocker as a complement to treat NSCLC.
Collapse
|
58
|
Cav3.1 overexpression is associated with negative characteristics and prognosis in non-small cell lung cancer. Oncotarget 2018; 9:8573-8583. [PMID: 29492218 PMCID: PMC5823575 DOI: 10.18632/oncotarget.24194] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Accepted: 12/05/2017] [Indexed: 11/25/2022] Open
Abstract
Introduction Voltage-gated calcium channels (VGCC) have been found to be differentially expressed in several different tumor types, but their role in tumor growth, malignant invasion, metastases and impact on clinical outcomes has not been clarified. Materials and Methods From a cohort database of 193 patients with early-stage NSCLC, 163 formalin-fixed paraffin-embedded specimens were available for analysis to construct tissue microarrays. Cav3.1 protein expression was detected using fluorescence immunohistochemistry, and quantified using automated image acquisition and analysis. Results Among the cohort of 193 NSCLC patients, adenocarcinoma (53.9%) and squamous cell carcinoma (SCC) (30.1%) were the most common histologies. There was no difference between SCC and non-SCC subtypes in overall survival (OS) or relapse-free survival (RFS); 74.2 vs 90.1 months (p = 0.543) and 48.8 vs 52.6 months (p = 0.766), respectively. T-type VGCC 3.1 (Cav3.1) overexpression was assessed by tissue microarray immunohistochemistry analysis from 163 available patient samples. Eighteen (11.0%) NSCLC primaries were found to have Cav3.1 overexpression levels, and were significantly associated with SCC histology (p < 0.001), larger tumor size (p < 0.001) and later stage disease at diagnosis (p = 0.019). Median OS was 48.6 vs 106.7 months for Cav3.1 overexpressing and non-overexpressing patients, respectively (p = 0.032). Regression analysis revealed a significantly negative effect for Cav3.1 overexpression on RFS (Hazard ratio [HR] = 2.02, p = 0.048). Conclusions Cav3.1 overexpression is a potential biomarker for poorer patient outcomes. These results bring supportive evidence for calcium channels inducing an aggressive phenotype in NSCLC and potentially may serve as a therapeutic target in overexpressing tumors.
Collapse
|
59
|
Zhang Y, Zhang Y, Fan H, Shi Y, Zhan C, Wang Q. Study on the role of transient receptor potential C6 channels in esophageal squamous cell carcinoma radiosensitivity. J Thorac Dis 2017; 9:3802-3809. [PMID: 29268388 DOI: 10.21037/jtd.2017.09.108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Background To study the effect of transient receptor potential C6 (TRPC6) channels on esophageal squamous cell carcinoma (ESCC) cell lines Eca109 cell cycle and to confirm whether TRPC6 channel is candidate radiosensitivity in vitro and in vivo. Methods We chose Eca109 cell line with a strong TRPC6 channels expression. Cell cycle was investigated after TRPC6 channel inhibitor SKF96365 treated with a 5 µM concentration. According to the results of cell cycle, radiation was performed. CCK-8 test was used to test the cell proliferation. Then we performed the same study in vivo. Total of 40 male nude mice were randomly divided into four groups as follows: SKF96365, radio, combined radio-SKF96365 and control. In SKF96365 group, 20 mg/kg 5 µM SKF96365 was injected into the abdominal cavity of the nude mice at day 5-11. In radiation group, the nude mice received radiotherapy 2 Gy per day at day 7-11. In combined radio-SKF96365 group, 20 mg/kg 5 µM SKF96365 was injected into the abdominal cavity of the nude mice at day 5-11 and 2 Gy radiotherapy was delivered to the tumor site at day 7-11. In control group, nude mice were injected saline into the abdominal cavity at day 5-11. General states of health were observed, the tumor size in volume was measured with calipers two times every week. Six weeks after seeding, mice were sacrificed by neck-break. The tumor size was measured in volume with caliper and in weigh with scale. Results Treatment with SKF96365 substantially increased the percentage of Eca109 cells in the G2/M phase and reduced that in G0/G1 phase in a time-dependent manner. Most of the cells (85.26%), 24 h after SKF96365 treatment were arrested in the G2/M phase. CCK-8 test showed that Eca109 ESCC cells received both SKF96365 and radiation showed the worst ability of cell proliferation. The same result was obtained in vivo. Nude mice received combined radio-SKF96365 showed the smallest tumor size and volume. Conclusions TRPC6 plays an important role in development of esophageal cancer, and SKF96365 may increase the sensitivity of radiotherapy. TRPC6 may become a new radiotherapy target in esophageal cancer.
Collapse
Affiliation(s)
- Yi Zhang
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Yongxing Zhang
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Hong Fan
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Yu Shi
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Cheng Zhan
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Qun Wang
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| |
Collapse
|
60
|
Varlamova EG, Goltyaev MV, Novoselov VI, Fesenko EE. Cloning, intracellular localization, and expression of the mammalian selenocysteine-containing protein SELENOI (SelI) in tumor cell lines. DOKL BIOCHEM BIOPHYS 2017; 476:320-322. [DOI: 10.1134/s160767291705012x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Indexed: 11/23/2022]
|
61
|
Hu HJ, Song M. Disrupted Ionic Homeostasis in Ischemic Stroke and New Therapeutic Targets. J Stroke Cerebrovasc Dis 2017; 26:2706-2719. [PMID: 29054733 DOI: 10.1016/j.jstrokecerebrovasdis.2017.09.011] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 08/30/2017] [Accepted: 09/06/2017] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Stroke is a leading cause of long-term disability. All neuroprotectants targeting excitotoxicity have failed to become stroke medications. In order to explore and identify new therapeutic targets for stroke, we here reviewed present studies of ionic transporters and channels that are involved in ischemic brain damage. METHOD We surveyed recent literature from animal experiments and clinical reports in the databases of PubMed and Elsevier ScienceDirect to analyze ionic mechanisms underlying ischemic cell damage and suggest promising ideas for stroke therapy. RESULTS Dysfunction of ionic transporters and disrupted ionic homeostasis are most early changes that underlie ischemic brain injury, thus receiving sustained attention in translational stroke research. The Na+/K+-ATPase, Na+/Ca2+ Exchanger, ionotropic glutamate receptor, acid-sensing ion channels (ASICs), sulfonylurea receptor isoform 1 (SUR1)-regulated NCCa-ATP channels, and transient receptor potential (TRP) channels are critically involved in ischemia-induced cellular degenerating processes such as cytotoxic edema, excitotoxicity, necrosis, apoptosis, and autophagic cell death. Some ionic transporters/channels also act as signalosomes to regulate cell death signaling. For acute stroke treatment, glutamate-mediated excitotoxicity must be interfered within 2 hours after stroke. The SUR1-regulated NCCa-ATP channels, Na+/K+-ATPase, ASICs, and TRP channels have a much longer therapeutic window, providing new therapeutic targets for developing feasible pharmacological treatments toward acute ischemic stroke. CONCLUSION The next generation of stroke therapy can apply a polypharmacology strategy for which drugs are designed to target multiple ion transporters/channels or their interaction with neurotoxic signaling pathways. But a successful translation of neuroprotectants relies on in-depth analyses of cell death mechanisms and suitable animal models resembling human stroke.
Collapse
Affiliation(s)
- Hui-Jie Hu
- Department of Pharmacology, Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Mingke Song
- Department of Pharmacology, Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| |
Collapse
|
62
|
Thiel G, Lesch A, Rubil S, Backes TM, Rössler OG. Regulation of Gene Transcription Following Stimulation of Transient Receptor Potential (TRP) Channels. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2017; 335:167-189. [PMID: 29305012 DOI: 10.1016/bs.ircmb.2017.07.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Transient receptor potential (TRP) channels belong to a heterogeneous superfamily of cation channels that are involved in the regulation of numerous biological functions, including regulation of Ca2+ and glucose homeostasis, tumorigenesis, temperature, and pain sensation. To understand the functions of TRP channels, their associated intracellular signaling pathways and molecular targets have to be identified on the cellular level. Stimulation of TRP channels frequently induces an influx of Ca2+ ions into the cells and the subsequent activation of protein kinases. These intracellular signal transduction pathways ultimately induce changes in the gene expression pattern of the cells. Here, we review the effects of TRPC6, TRPM3, and TRPV1 channel stimulation on the activation of the stimulus-responsive transcription factors AP-1, CREB, Egr-1, Elk-1, and NFAT. Following activation, these transcription factors induce the transcription of delayed response genes. We propose that many biological functions of TRP channels can be explained by the activation of stimulus-responsive transcription factors and their delayed response genes. The proteins encoded by those delayed response genes may be responsible for the biochemical and physiological changes following TRP channel activation.
Collapse
Affiliation(s)
- Gerald Thiel
- Saarland University Medical Faculty, Homburg, Germany.
| | - Andrea Lesch
- Saarland University Medical Faculty, Homburg, Germany
| | - Sandra Rubil
- Saarland University Medical Faculty, Homburg, Germany
| | | | | |
Collapse
|
63
|
Store-Operated Calcium Channel Complex in Postsynaptic Spines: A New Therapeutic Target for Alzheimer's Disease Treatment. J Neurosci 2017; 36:11837-11850. [PMID: 27881772 DOI: 10.1523/jneurosci.1188-16.2016] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 09/08/2016] [Accepted: 09/11/2016] [Indexed: 12/11/2022] Open
Abstract
Mushroom dendritic spine structures are essential for memory storage and the loss of mushroom spines may explain memory defects in aging and Alzheimer's disease (AD). The stability of mushroom spines depends on stromal interaction molecule 2 (STIM2)-mediated neuronal-store-operated Ca2+ influx (nSOC) pathway, which is compromised in AD mouse models, in aging neurons, and in sporadic AD patients. Here, we demonstrate that the Transient Receptor Potential Canonical 6 (TRPC6) and Orai2 channels form a STIM2-regulated nSOC Ca2+ channel complex in hippocampal mushroom spines. We further demonstrate that a known TRPC6 activator, hyperforin, and a novel nSOC positive modulator, NSN21778 (NSN), can stimulate activity of nSOC pathway in the spines and rescue mushroom spine loss in both presenilin and APP knock-in mouse models of AD. We further show that NSN rescues hippocampal long-term potentiation impairment in APP knock-in mouse model. We conclude that the STIM2-regulated TRPC6/Orai2 nSOC channel complex in dendritic mushroom spines is a new therapeutic target for the treatment of memory loss in aging and AD and that NSN is a potential candidate molecule for therapeutic intervention in brain aging and AD. SIGNIFICANCE STATEMENT Mushroom dendritic spine structures are essential for memory storage and the loss of mushroom spines may explain memory defects in Alzheimer's disease (AD). This study demonstrated that Transient Receptor Potential Canonical 6 (TRPC6) and Orai2 form stromal interaction molecule 2 (STIM2)-regulated neuronal-store-operated Ca2+ influx (nSOC) channel complex in hippocampal synapse and the resulting Ca2+ influx is critical for long-term maintenance of mushroom spines in hippocampal neurons. A novel nSOC-positive modulator, NSN21778 (NSN), rescues mushroom spine loss and synaptic plasticity impairment in AD mice models. The TRPC6/Orai2 nSOC channel complex is a new therapeutic target and NSN is a potential candidate molecule for therapeutic intervention in brain aging and AD.
Collapse
|
64
|
Oncosis and apoptosis induction by activation of an overexpressed ion channel in breast cancer cells. Oncogene 2017; 36:6490-6500. [PMID: 28759041 DOI: 10.1038/onc.2017.234] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 06/01/2017] [Accepted: 06/02/2017] [Indexed: 12/30/2022]
Abstract
The critical role of calcium signalling in processes related to cancer cell proliferation and invasion has seen a focus on pharmacological inhibition of overexpressed ion channels in specific cancer subtypes as a potential therapeutic approach. However, despite the critical role of calcium in cell death pathways, pharmacological activation of overexpressed ion channels has not been extensively evaluated in breast cancer. Here we define the overexpression of transient receptor potential vanilloid 4 (TRPV4) in a subgroup of breast cancers of the basal molecular subtype. We also report that pharmacological activation of TRPV4 with GSK1016790A reduced viability of two basal breast cancer cell lines with pronounced endogenous overexpression of TRPV4, MDA-MB-468 and HCC1569. Pharmacological activation of TRPV4 produced pronounced cell death through two mechanisms: apoptosis and oncosis in MDA-MB-468 cells. Apoptosis was associated with PARP-1 cleavage and oncosis was associated with a rapid decline in intracellular ATP levels, which was a consequence of, rather than the cause of, the intracellular ion increase. TRPV4 activation also resulted in reduced tumour growth in vivo. These studies define a novel therapeutic strategy for breast cancers that overexpress specific calcium permeable plasmalemmal ion channels with available selective pharmacological activators.
Collapse
|
65
|
Lu FF, Wang HY, He XZ, Liang TY, Wang W, Hu HM, Wu F, Liu YW, Zhang SZ. Prognostic value of ion channel genes in Chinese patients with gliomas based on mRNA expression profiling. J Neurooncol 2017; 134:397-405. [DOI: 10.1007/s11060-017-2539-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Accepted: 06/25/2017] [Indexed: 01/17/2023]
|
66
|
Law BYK, Mok SWF, Chen J, Michelangeli F, Jiang ZH, Han Y, Qu YQ, Qiu ACL, Xu SW, Xue WW, Yao XJ, Gao JY, Javed MUH, Coghi P, Liu L, Wong VKW. N-Desmethyldauricine Induces Autophagic Cell Death in Apoptosis-Defective Cells via Ca 2+ Mobilization. Front Pharmacol 2017; 8:388. [PMID: 28670281 PMCID: PMC5472688 DOI: 10.3389/fphar.2017.00388] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 06/02/2017] [Indexed: 12/19/2022] Open
Abstract
Resistance of cancer cells to chemotherapy remains a significant problem in oncology. Mechanisms regulating programmed cell death, including apoptosis, autophagy or necrosis, in the treatment of cancers have been extensively investigated over the last few decades. Autophagy is now emerging as an important pathway in regulating cell death or survival in cancer therapy. Recent studies demonstrated variety of natural small-molecules could induce autophagic cell death in apoptosis-resistant cancer cells, therefore, discovery of novel autophagic enhancers from natural products could be a promising strategy for treatment of chemotherapy-resistant cancer. By computational virtual docking analysis, biochemical assays, and advanced live-cell imaging techniques, we have identified N-desmethyldauricine (LP-4), isolated from rhizoma of Menispermum dauricum DC as a novel inducer of autophagy. LP-4 was shown to induce autophagy via the Ulk-1-PERK and Ca2+/Calmodulin-dependent protein kinase kinase β (CaMKKβ)-AMPK-mTOR signaling cascades, via mobilizing calcium release through inhibition of SERCA, and importantly, lead to autophagic cell death in a panel of cancer cells, apoptosis-defective and apoptosis-resistant cells. Taken together, this study provides detailed insights into the cytotoxic mechanism of a novel autophagic compound that targeting the apoptosis resistant cancer cells, and new implication on drug discovery from natural products for drug resistant cancer therapy.
Collapse
Affiliation(s)
- Betty Y K Law
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and TechnologyMacau, China
| | - Simon W F Mok
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and TechnologyMacau, China
| | - Juan Chen
- The Key Laboratory of Molecular Biology on Infectious Diseases, Ministry of Education, The Second Affiliated Hospital of Chongqing Medical University, Chongqing Medical UniversityChongqing, China
| | | | - Zhi-Hong Jiang
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and TechnologyMacau, China
| | - Yu Han
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and TechnologyMacau, China
| | - Yuan Q Qu
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and TechnologyMacau, China
| | - Alena C L Qiu
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and TechnologyMacau, China
| | - Su-Wei Xu
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and TechnologyMacau, China
| | - Wei-Wei Xue
- College of Chemistry and Chemical Engineering, Lanzhou UniversityLanzhou, China
| | - Xiao-Jun Yao
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and TechnologyMacau, China.,College of Chemistry and Chemical Engineering, Lanzhou UniversityLanzhou, China
| | - Jia Y Gao
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and TechnologyMacau, China
| | - Masood-Ul-Hassan Javed
- College of Medicine, King Saud Bin Abdulaziz University for Health SciencesJeddah, Saudi Arabia
| | - Paolo Coghi
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and TechnologyMacau, China
| | - Liang Liu
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and TechnologyMacau, China
| | - Vincent K W Wong
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and TechnologyMacau, China
| |
Collapse
|
67
|
Balasubramaniam SL, Gopalakrishnapillai A, Petrelli NJ, Barwe SP. Knockdown of sodium-calcium exchanger 1 induces epithelial-to-mesenchymal transition in kidney epithelial cells. J Biol Chem 2017; 292:11388-11399. [PMID: 28550085 DOI: 10.1074/jbc.m116.752352] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Revised: 05/17/2017] [Indexed: 12/17/2022] Open
Abstract
Mesenchymal-to-epithelial transition (MET) and epithelial-to-mesenchymal transition (EMT) are important processes in kidney development. Failure to undergo MET during development leads to the initiation of Wilms tumor, whereas EMT contributes to the development of renal cell carcinomas (RCC). The role of calcium regulators in governing these processes is becoming evident. We demonstrated earlier that Na+/Ca2+ exchanger 1 (NCX1), a major calcium exporter in renal epithelial cells, regulates epithelial cell motility. Here, we show for the first time that NCX1 mRNA and protein expression was down-regulated in Wilms tumor and RCC. Knockdown of NCX1 in Madin-Darby canine kidney cells induced fibroblastic morphology, increased intercellular junctional distance, and induced paracellular permeability, loss of apico-basal polarity in 3D cultures, and anchorage-independent growth, accompanied by expression of mesenchymal markers. We also provide evidence that NCX1 interacts with and anchors E-cadherin to the cell surface independent of NCX1 ion transport activity. Consistent with destabilization of E-cadherin, NCX1 knockdown cells showed an increase in β-catenin nuclear localization, enhanced transcriptional activity, and up-regulation of downstream targets of the β-catenin signaling pathway. Taken together, knockdown of NCX1 in Madin-Darby canine kidney cells alters epithelial morphology and characteristics by destabilization of E-cadherin and induction of β-catenin signaling.
Collapse
Affiliation(s)
- Sona Lakshme Balasubramaniam
- From the Nemours Center for Childhood Cancer Research, Alfred I. duPont Hospital for Children, Wilmington, Delaware 19803.,the Department of Biological Sciences, University of Delaware, Newark, Delaware 19716, and
| | - Anilkumar Gopalakrishnapillai
- From the Nemours Center for Childhood Cancer Research, Alfred I. duPont Hospital for Children, Wilmington, Delaware 19803
| | - Nicholas J Petrelli
- the Helen F. Graham Cancer Center, Christiana Care Health System, Newark, Delaware 19718
| | - Sonali P Barwe
- From the Nemours Center for Childhood Cancer Research, Alfred I. duPont Hospital for Children, Wilmington, Delaware 19803, .,the Department of Biological Sciences, University of Delaware, Newark, Delaware 19716, and
| |
Collapse
|
68
|
Anwar SL, Wulaningsih W, Lehmann U. Transposable Elements in Human Cancer: Causes and Consequences of Deregulation. Int J Mol Sci 2017; 18:E974. [PMID: 28471386 PMCID: PMC5454887 DOI: 10.3390/ijms18050974] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 04/26/2017] [Accepted: 04/29/2017] [Indexed: 01/04/2023] Open
Abstract
Transposable elements (TEs) comprise nearly half of the human genome and play an essential role in the maintenance of genomic stability, chromosomal architecture, and transcriptional regulation. TEs are repetitive sequences consisting of RNA transposons, DNA transposons, and endogenous retroviruses that can invade the human genome with a substantial contribution in human evolution and genomic diversity. TEs are therefore firmly regulated from early embryonic development and during the entire course of human life by epigenetic mechanisms, in particular DNA methylation and histone modifications. The deregulation of TEs has been reported in some developmental diseases, as well as for different types of human cancers. To date, the role of TEs, the mechanisms underlying TE reactivation, and the interplay with DNA methylation in human cancers remain largely unexplained. We reviewed the loss of epigenetic regulation and subsequent genomic instability, chromosomal aberrations, transcriptional deregulation, oncogenic activation, and aberrations of non-coding RNAs as the potential mechanisms underlying TE deregulation in human cancers.
Collapse
Affiliation(s)
- Sumadi Lukman Anwar
- Division of Surgical Oncology, Department of Surgery Faculty of Medicine, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia.
- Institute of Pathology, Medizinische Hochschule Hannover, Hannover 30625, Germany.
- PILAR (Philippine and Indonesian Scholar) Research and Education, 20 Station Road, Cambridge CB1 2JD, UK.
| | - Wahyu Wulaningsih
- PILAR (Philippine and Indonesian Scholar) Research and Education, 20 Station Road, Cambridge CB1 2JD, UK.
- MRC (Medical Research Council) Unit for Lifelong Health and Ageing, University College London, London WC1B 5JU, UK.
- Division of Haematology/Oncology, Faculty of Medicine Universitas Gadjah Mada, Yogyakarta 55281, Indonesia.
| | - Ulrich Lehmann
- Institute of Pathology, Medizinische Hochschule Hannover, Hannover 30625, Germany.
| |
Collapse
|
69
|
Hyperforin activates gene transcription involving transient receptor potential C6 channels. Biochem Pharmacol 2017; 129:96-107. [DOI: 10.1016/j.bcp.2017.01.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 01/17/2017] [Indexed: 12/26/2022]
|
70
|
Chen J, Li Z, Hatcher JT, Chen QH, Chen L, Wurster RD, Chan SL, Cheng Z. Deletion of TRPC6 Attenuates NMDA Receptor-Mediated Ca 2+ Entry and Ca 2+-Induced Neurotoxicity Following Cerebral Ischemia and Oxygen-Glucose Deprivation. Front Neurosci 2017; 11:138. [PMID: 28400714 PMCID: PMC5368256 DOI: 10.3389/fnins.2017.00138] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Accepted: 03/06/2017] [Indexed: 12/21/2022] Open
Abstract
Transient receptor potential canonical 6 (TRPC6) channels are permeable to Na+ and Ca2+ and are widely expressed in the brain. In this study, the role of TRPC6 was investigated following ischemia/reperfusion (I/R) and oxygen-glucose deprivation (OGD). We found that TRPC6 expression was increased in wild-type (WT) mice cortical neurons following I/R and in primary neurons with OGD, and that deletion of TRPC6 reduced the I/R-induced brain infarct in mice and the OGD- /neurotoxin-induced neuronal death. Using live-cell imaging to examine intracellular Ca2+ levels ([Ca2+]i), we found that OGD induced a significant higher increase in glutamate-evoked Ca2+ influx compared to untreated control and such an increase was reduced by TRPC6 deletion. Enhancement of TRPC6 expression using AdCMV-TRPC6-GFP infection in WT neurons increased [Ca2+]i in response to glutamate application compared to AdCMV-GFP control. Inhibition of N-methyl-d-aspartic acid receptor (NMDAR) with MK801 decreased TRPC6-dependent increase of [Ca2+]i in TRPC6 infected cells, indicating that such a Ca2+ influx was NMDAR dependent. Furthermore, TRPC6-dependent Ca2+ influx was blunted by blockade of Na+ entry in TRPC6 infected cells. Finally, OGD-enhanced Ca2+ influx was reduced, but not completely blocked, in the presence of voltage-dependent Na+ channel blocker tetrodotoxin (TTX) and dl-α-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid (AMPA) blocker CNQX. Altogether, we concluded that I/R-induced brain damage was, in part, due to upregulation of TRPC6 in cortical neurons. We postulate that overexpression of TRPC6 following I/R may induce neuronal death partially through TRPC6-dependent Na+ entry which activated NMDAR, thus leading to a damaging Ca2+ overload. These findings may provide a potential target for future intervention in stroke-induced brain damage.
Collapse
Affiliation(s)
- Jin Chen
- Division of Neuroscience, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida Orlando, FL, USA
| | - Zhaozhong Li
- Division of Neuroscience, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida Orlando, FL, USA
| | - Jeffery T Hatcher
- Division of Neuroscience, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida Orlando, FL, USA
| | - Qing-Hui Chen
- Department of Kinesiology and Integrative Physiology, Michigan Technological University Houghton, MI, USA
| | - Li Chen
- Department of Clinical Laboratory, The First Central Hospital of Tianjin Tianjin, China
| | - Robert D Wurster
- Department of Cellular and Molecular Physiology, Stritch School of Medicine, Loyola University Maywood, IL, USA
| | - Sic L Chan
- Division of Neuroscience, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida Orlando, FL, USA
| | - Zixi Cheng
- Division of Neuroscience, Burnett School of Biomedical Sciences, College of Medicine, University of Central FloridaOrlando, FL, USA; Division of Metabolic and Cardiovascular Sciences, Burnett School of Biomedical Sciences, College of Medicine, University of Central FloridaOrlando, FL, USA
| |
Collapse
|
71
|
Xia J, Wang H, Li S, Wu Q, Sun L, Huang H, Zeng M. Ion channels or aquaporins as novel molecular targets in gastric cancer. Mol Cancer 2017; 16:54. [PMID: 28264681 PMCID: PMC5338097 DOI: 10.1186/s12943-017-0622-y] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2016] [Accepted: 02/22/2017] [Indexed: 12/21/2022] Open
Abstract
Gastric cancer (GC) is a common disease with few effective treatment choices and poor prognosis, and has the second-highest mortality rates among all cancers worldwide. Dysregulation and/or malfunction of ion channels or aquaporins (AQPs) are common in various human cancers. Furthermore, ion channels are involved in numerous important aspects of the tumor aggressive phonotype, such as proliferation, cell cycle, apoptosis, motility, migration, and invasion. Indeed, by localizing in the plasma membrane, ion channels or AQPs can sense and respond to extracellular environment changes; thus, they play a crucial role in cell signaling and cancer progression. These findings have expanded a new area of pharmaceutical exploration for various types of cancer, including GC. The involvement of multiple ion channels, such as voltage-gated potassium and sodium channels, intracellular chloride channels, ‘transient receptor potential’ channels, and AQPs, which have been shown to facilitate the pathogenesis of other tumors, also plays a role in GC. In this review, an overview of ion channel and aquaporin expression and function in carcinogenesis of GC is presented. Studies of ion channels or AQPs will advance our understanding of the molecular genesis of GC and may identify novel and effective targets for the clinical application of GC.
Collapse
Affiliation(s)
- Jianling Xia
- Cancer Center, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Hospital of the University of Electronic Science and Technology of China, The Western First Round Road, Section 2#32, Chengdu, 610072, China.,Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Hongqiang Wang
- Department of Oncology, Zhoushan Hospital, Zhoushan, 316000, China.,Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Shi Li
- Department of Urology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325015, China
| | - Qinghui Wu
- Department of Urology, Hainan Provincial People's Hospital, Haikou, 570311, China
| | - Li Sun
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Hongxiang Huang
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Ming Zeng
- Cancer Center, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Hospital of the University of Electronic Science and Technology of China, The Western First Round Road, Section 2#32, Chengdu, 610072, China.
| |
Collapse
|
72
|
Hyperthermia and chemotherapy using Fe(Salen) nanoparticles might impact glioblastoma treatment. Sci Rep 2017; 7:42783. [PMID: 28218292 PMCID: PMC5316938 DOI: 10.1038/srep42783] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 01/16/2017] [Indexed: 12/03/2022] Open
Abstract
We previously reported that μ-oxo N,N’-bis(salicylidene)ethylenediamine iron [Fe(Salen)], a magnetic organic compound, has direct anti-tumor activity, and generates heat in an alternating magnetic field (AMF). We showed that Fe(Salen) nanoparticles are useful for combined hyperthermia-chemotherapy of tongue cancer. Here, we have examined the effect of Fe(Salen) on human glioblastoma (GB). Fe(Salen) showed in vitro anti-tumor activity towards several human GB cell lines. It inhibited cell proliferation, and its apoptosis-inducing activity was greater than that of clinically used drugs. Fe(Salen) also showed in vivo anti-tumor activity in the mouse brain. We evaluated the drug distribution and systemic side effects of intracerebrally injected Fe(Salen) nanoparticles in rats. Further, to examine whether hyperthermia, which was induced by exposing Fe(Salen) nanoparticles to AMF, enhanced the intrinsic anti-tumor effect of Fe(Salen), we used a mouse model grafted with U251 cells on the left leg. Fe(Salen), BCNU, or normal saline was injected into the tumor in the presence or absence of AMF exposure. The combination of Fe(Salen) injection and AMF exposure showed a greater anti-tumor effect than did either Fe(Salen) or BCNU alone. Our results indicate that hyperthermia and chemotherapy with single-drug nanoparticles could be done for GB treatment.
Collapse
|
73
|
Abstract
TRPCs have been demonstrated to be widely expressed in different cancers. In recent years, a number of studies closely investigated the roles of TRPCs in cancer cells. Most of the results show that both mRNA and protein levels of TRPCs significantly increase in cancer tissues compared with healthy controls. TRPCs regulate Ca2+ homeostasis, contribute to cell cycle regulation and the expression/activation of Ca2+-related factors, and thus play critical roles in the proliferation of cancer cells. Therefore, TRPCs could act as potential drug targets for cancer diagnosis and therapy.
Collapse
|
74
|
Abstract
Glioma is the most common type of brain tumors and malignant glioma is extremely lethal, with patients' 5-year survival rate less than 10%. Treatment of gliomas poses remarkable clinical challenges, not only because of their particular localization but also because glioma cells possess several malignant biological features, including highly proliferative, highly invasive, highly angiogenic, and highly metabolic aberrant. All these features make gliomas highly recurrent and drug resistant. Finding new and effective molecular drug targets for glioma is an urgent and critical task for both basic and clinical research. Recent studies have proposed a type of non-voltage-gated calcium channels, namely, canonical transient receptor potential (TRPC) channels, to be newly emerged potential drug targets for glioma. They are heavily involved in the proliferation, migration, invasion, angiogenesis, and metabolism of glioma cells. Abundant evidence from both cell models and preclinical mouse models has demonstrated that inhibition of TRPC channels shows promising anti-glioma effect. In this chapter, we will give a comprehensive review on the current progress in the studies on TRPC channels and glioma and discuss their potential clinical implication in glioma therapy.
Collapse
Affiliation(s)
- Shanshan Li
- Department of Molecular and Cellular Biology, Baylor College of Medicine, 1 Baylor Plaza, Houston, 77030, TX, USA.
| | - Xia Ding
- Mouse Cancer Genetics Program, National Cancer Institute, NIH, Frederick, MD, 21702, USA.
| |
Collapse
|
75
|
|
76
|
He Z. TRPC Channel Downstream Signaling Cascades. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 976:25-33. [PMID: 28508310 DOI: 10.1007/978-94-024-1088-4_3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The family of TRP channel is comprised of a large group of cation-permeable channels, displaying as signaling integrators for sensing extracellular stimulus and initiating intracellular signaling cascades. This chapter offers a brief review of the signaling molecules related to TRPC channels, the first identified mammalian TRP family. Besides the signaling molecules involved in TRPC activation, I will focus on their upstream and downstream signaling cascades and the molecules involved in their intracellular trafficking.
Collapse
Affiliation(s)
- Zhuohao He
- Department of Pathology and Laboratory Medicine, Institute on Aging and Center for Neurodegenerative Disease Research, University of Pennsylvania School of Medicine, Philadelphia, PA, 19104, USA.
| |
Collapse
|
77
|
Cui C, Merritt R, Fu L, Pan Z. Targeting calcium signaling in cancer therapy. Acta Pharm Sin B 2017; 7:3-17. [PMID: 28119804 PMCID: PMC5237760 DOI: 10.1016/j.apsb.2016.11.001] [Citation(s) in RCA: 372] [Impact Index Per Article: 53.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 10/28/2016] [Indexed: 12/15/2022] Open
Abstract
The intracellular calcium ions (Ca2+) act as second messenger to regulate gene transcription, cell proliferation, migration and death. Accumulating evidences have demonstrated that intracellular Ca2+ homeostasis is altered in cancer cells and the alteration is involved in tumor initiation, angiogenesis, progression and metastasis. Targeting derailed Ca2+ signaling for cancer therapy has become an emerging research area. This review summarizes some important Ca2+ channels, transporters and Ca2+-ATPases, which have been reported to be altered in human cancer patients. It discusses the current research effort toward evaluation of the blockers, inhibitors or regulators for Ca2+ channels/transporters or Ca2+-ATPase pumps as anti-cancer drugs. This review is also aimed to stimulate interest in, and support for research into the understanding of cellular mechanisms underlying the regulation of Ca2+ signaling in different cancer cells, and to search for novel therapies to cure these malignancies by targeting Ca2+ channels or transporters.
Collapse
Key Words
- 20-GPPD, 20-O-β-D-glucopyranosyl-20(S)-protopanaxadiol
- Apoptosis
- CBD, cannabidiol
- CBG, cannabigerol
- CPZ, capsazepine
- CRAC, Ca2+ release-activated Ca2+ channel
- CTL, cytotoxic T cells
- CYP3A4, cytochrome P450 3A4
- Ca2+ channels
- CaM, calmodulin
- CaMKII, calmodulin-dependent protein kinase II
- Cancer therapy
- Cell proliferation
- Channel blockers;
- ER/SR, endoplasmic/sarcoplasmic reticulum
- HCX, H+/Ca2+ exchangers
- IP3, inositol 1,4,5-trisphosphate
- IP3R (1, 2, 3), IP3 receptor (type 1, type 2, type 3)
- MCU, mitochondrial Ca2+ uniporter
- MCUR1, MCU uniporter regulator 1
- MICU (1, 2, 3), mitochondrial calcium uptake (type 1, type 2, type 3)
- MLCK, myosin light-chain kinase
- Migration
- NCX, Na+/Ca2+ exchanger
- NF-κB, nuclear factor-κB
- NFAT, nuclear factor of activated T cells
- NSCLC, non-small cell lung cancer
- OSCC, oral squamous cell carcinoma cells
- PKC, protein kinase C
- PM, plasma membrane
- PMCA, plasma membrane Ca2+-ATPase
- PTP, permeability transition pore
- ROS, reactive oxygen species
- RyR, ryanodine receptor
- SERCA, SR/ER Ca2+-ATPase
- SOCE, store-operated Ca2+ entry
- SPCA, secretory pathway Ca2+-ATPase
- Store-operated Ca2+ entry
- TEA, tetraethylammonium
- TG, thapsigargin
- TPC2, two-pore channel 2
- TRIM, 1-(2-(trifluoromethyl) phenyl) imidazole
- TRP (A, C, M, ML, N, P, V), transient receptor potential (ankyrin, canonical, melastatin, mucolipin, no mechanoreceptor potential C, polycystic, vanilloid)
- VGCC, voltage-gated Ca2+ channel
- mAb, monoclonal antibody
Collapse
Affiliation(s)
- Chaochu Cui
- State Key Laboratory of Oncology in South China; Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
- Department of Surgery, Division of Thoracic Surgery, The Ohio State University, Columbus, OH 43210, USA
| | - Robert Merritt
- Department of Surgery, Division of Thoracic Surgery, The Ohio State University, Columbus, OH 43210, USA
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210, USA
| | - Liwu Fu
- State Key Laboratory of Oncology in South China; Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Zui Pan
- Department of Surgery, Division of Thoracic Surgery, The Ohio State University, Columbus, OH 43210, USA
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210, USA
- College of Nursing and Health Innovation, The University of Texas at Arlington, Arlington, TX 76019, USA
| |
Collapse
|
78
|
In vivo MEMRI characterization of brain metastases using a 3D Look-Locker T1-mapping sequence. Sci Rep 2016; 6:39449. [PMID: 27995976 PMCID: PMC5171659 DOI: 10.1038/srep39449] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 11/22/2016] [Indexed: 12/31/2022] Open
Abstract
Although MEMRI (Manganese Enhanced MRI) informations were obtained on primary tumors in small animals, MEMRI data on metastases are lacking. Thus, our goal was to determine if 3D Look-Locker T1 mapping was an efficient method to evaluate Mn ions transport in brain metastases in vivo. The high spatial resolution in 3D (156 × 156 × 218 μm) of the sequence enabled to detect metastases of 0.3 mm3. In parallel, the T1 quantitation enabled to distinguish three populations of MDA-MB-231 derived brain metastases after MnCl2 intravenous injection: one with a healthy blood-tumor barrier that did not internalize Mn2+ ions, and two others, which T1 shortened drastically by 54.2% or 24%. Subsequent scans of the mice, enabled by the fast acquisition (23 min), demonstrated that these T1 reached back their pre-injection values in 24 h. Contrarily to metastases, the T1 of U87-MG glioma remained 26.2% shorter for one week. In vitro results supported the involvement of the Transient Receptor Potential channels and the Calcium-Sensing Receptor in the uptake and efflux of Mn2+ ions, respectively. This study highlights the ability of the 3D Look-Locker T1 mapping sequence to study heterogeneities (i) amongst brain metastases and (ii) between metastases and glioma regarding Mn transport.
Collapse
|
79
|
Wang T, Ning K, Lu TX, Hua D. Elevated expression of TrpC5 and GLUT1 is associated with chemoresistance in colorectal cancer. Oncol Rep 2016; 37:1059-1065. [DOI: 10.3892/or.2016.5322] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 08/06/2016] [Indexed: 11/05/2022] Open
|
80
|
Rizaner N, Onkal R, Fraser SP, Pristerá A, Okuse K, Djamgoz MBA. Intracellular calcium oscillations in strongly metastatic human breast and prostate cancer cells: control by voltage-gated sodium channel activity. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2016; 45:735-748. [PMID: 27665102 DOI: 10.1007/s00249-016-1170-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 06/27/2016] [Accepted: 08/30/2016] [Indexed: 12/21/2022]
Abstract
The possible association of intracellular Ca2+ with metastasis in human cancer cells is poorly understood. We have studied Ca2+ signaling in human prostate and breast cancer cell lines of strongly versus weakly metastatic potential in a comparative approach. Intracellular free Ca2+ was measured using a membrane-permeant fluorescent Ca2+-indicator dye (Fluo-4 AM) and confocal microscopy. Spontaneous Ca2+ oscillations were observed in a proportion of strongly metastatic human prostate and breast cancer cells (PC-3M and MDA-MB-231, respectively). In contrast, no such oscillations were observed in weakly/non metastatic LNCaP and MCF-7 cells, although a rise in the resting Ca2+ level could be induced by applying a high-K+ solution. Various parameters of the oscillations depended on extracellular Ca2+ and voltage-gated Na+ channel activity. Treatment with either tetrodotoxin (a general blocker of voltage-gated Na+ channels) or ranolazine (a blocker of the persistent component of the channel current) suppressed the Ca2+ oscillations. It is concluded that the functional voltage-gated Na+ channel expression in strongly metastatic cancer cells makes a significant contribution to generation of oscillatory intracellular Ca2+ activity. Possible mechanisms and consequences of the Ca2+ oscillations are discussed.
Collapse
Affiliation(s)
- Nahit Rizaner
- Department of Life Sciences, Neuroscience Solutions to Cancer Research Group, Sir Alexander Fleming Building, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK. .,Biotechnology Research Centre, Cyprus International University, Haspolat, Mersin, Turkey.
| | - Rustem Onkal
- Department of Life Sciences, Neuroscience Solutions to Cancer Research Group, Sir Alexander Fleming Building, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK.,Biotechnology Research Centre, Cyprus International University, Haspolat, Mersin, Turkey
| | - Scott P Fraser
- Department of Life Sciences, Neuroscience Solutions to Cancer Research Group, Sir Alexander Fleming Building, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
| | - Alessandro Pristerá
- Department of Life Sciences, Sir Ernst Chain Building, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
| | - Kenji Okuse
- Department of Life Sciences, Sir Ernst Chain Building, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
| | - Mustafa B A Djamgoz
- Department of Life Sciences, Neuroscience Solutions to Cancer Research Group, Sir Alexander Fleming Building, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK.,Biotechnology Research Centre, Cyprus International University, Haspolat, Mersin, Turkey
| |
Collapse
|
81
|
Lepannetier S, Zanou N, Yerna X, Emeriau N, Dufour I, Masquelier J, Muccioli G, Tajeddine N, Gailly P. Sphingosine-1-phosphate-activated TRPC1 channel controls chemotaxis of glioblastoma cells. Cell Calcium 2016; 60:373-383. [PMID: 27638096 DOI: 10.1016/j.ceca.2016.09.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 08/25/2016] [Accepted: 09/08/2016] [Indexed: 01/21/2023]
Abstract
TRP channels are involved in the control of a broad range of cellular functions such as cell proliferation and motility. We investigated the gating mechanism of TRPC1 channel and its role in U251 glioblastoma cells migration in response to chemotaxis by platelet-derived growth factor (PDGF). PDGF induced an influx of Ca2+ that was partially inhibited after pretreatment of the cells with SKI-II, a specific inhibitor of sphingosine kinase producing sphingosine-1-P (S1P). S1P by itself also induced an entry of Ca2+. Interestingly, PDGF- and S1P-induced entries of Ca2+ were lost in siRNA-TRPC1 treated cells. PDGF-induced chemotaxis of U251 cells was dramatically inhibited in cells treated with SKI-II. This effect was almost completely rescued by addition of synthetic S1P. Chemotaxis was also completely lost in siRNA-TRPC1 treated cells and interestingly, the rescue of migration of cells treated with SKI-II by S1P was dependent on the expression of TRPC1. Immunocytochemistry revealed that, in response to PDGF, TRPC1 translocated from inside of the cell to the front of migration (lamellipodes). This effect seemed PI3K dependent as it was inhibited by cell pre-treatment with LY294002, a PI3-kinase inhibitor. Our results thus identify S1P as a potential activator of TRPC1, a channel involved in cell orientation during chemotaxis by PDGF.
Collapse
Affiliation(s)
- Sophie Lepannetier
- Université catholique de Louvain, Institute of Neuroscience, Laboratory of Cell Physiology, av. Mounier 53, box B1.53.17, 1200 Brussels, Belgium
| | - Nadège Zanou
- Université catholique de Louvain, Institute of Neuroscience, Laboratory of Cell Physiology, av. Mounier 53, box B1.53.17, 1200 Brussels, Belgium
| | - Xavier Yerna
- Université catholique de Louvain, Institute of Neuroscience, Laboratory of Cell Physiology, av. Mounier 53, box B1.53.17, 1200 Brussels, Belgium
| | - Noémie Emeriau
- Université catholique de Louvain, Institute of Neuroscience, Laboratory of Cell Physiology, av. Mounier 53, box B1.53.17, 1200 Brussels, Belgium
| | - Inès Dufour
- Université catholique de Louvain, Institute of Neuroscience, Laboratory of Cell Physiology, av. Mounier 53, box B1.53.17, 1200 Brussels, Belgium
| | - Julien Masquelier
- Université catholique de Louvain, Louvain Drug Research Institute, av. Mounier 72, box B1.72.01, 1200 Brussels, Belgium
| | - Giulio Muccioli
- Université catholique de Louvain, Louvain Drug Research Institute, av. Mounier 72, box B1.72.01, 1200 Brussels, Belgium
| | - Nicolas Tajeddine
- Université catholique de Louvain, Institute of Neuroscience, Laboratory of Cell Physiology, av. Mounier 53, box B1.53.17, 1200 Brussels, Belgium
| | - Philippe Gailly
- Université catholique de Louvain, Institute of Neuroscience, Laboratory of Cell Physiology, av. Mounier 53, box B1.53.17, 1200 Brussels, Belgium.
| |
Collapse
|
82
|
Morrone FB, Gehring MP, Nicoletti NF. Calcium Channels and Associated Receptors in Malignant Brain Tumor Therapy. Mol Pharmacol 2016; 90:403-9. [PMID: 27418672 DOI: 10.1124/mol.116.103770] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2015] [Accepted: 07/11/2016] [Indexed: 12/25/2022] Open
Abstract
Malignant brain tumors are highly lethal and aggressive. Despite recent advances in the current therapies, which include the combination of surgery and radio/chemotherapy, the average survival rate remains poor. Altered regulation of ion channels is part of the neoplastic transformation, which suggests that ion channels are involved in cancer. Distinct classes of calcium-permeable channels are abnormally expressed in cancer and are likely involved in the alterations underlying malignant growth. Specifically, cytosolic Ca(2+) activity plays an important role in the regulation of cell proliferation, and Ca(2+) signaling is altered in proliferating tumor cells. A series of previous studies emphasized the importance of the T-type low-voltage-gated calcium channels (VGCC) in different cancer types, including gliomas, and remarkably, pharmacologic inhibition of T-type VGCC caused antiproliferative effects and triggered apoptosis of human glioma cells. Other calcium permeable channels, such as transient receptor potential (TRP) channels, contribute to changes in Ca(2+) by modulating the driving force for Ca(2+) entry, and some TRP channels are required for proliferation and migration in gliomas. Furthermore, recent evidence shows that TRP channels contribute to the progression and survival of the glioblastoma patients. Likewise, the purinergic P2X7 receptor acts as a direct conduit for Ca(2+)-influx and an indirect activator of voltage-gated Ca(2+)-channel. Evidence also shows that P2X7 receptor activation is linked to elevated expression of inflammation promoting factors, tumor cell migration, an increase in intracellular mobilization of Ca(2+), and membrane depolarization in gliomas. Therefore, this review summarizes the recent findings on calcium channels and associated receptors as potential targets to treat malignant gliomas.
Collapse
Affiliation(s)
- Fernanda B Morrone
- Programa de Pós-graduação em Biologia Celular e Molecular (F.B.M., M.P.G., N.F.N), Programa de Pós-graduação em Medicina e Ciências da Saúde, Faculdade de Farmácia, Pontifícia Universidade Católica do RS, Porto Alegre (F.B.M.); Laboratório de Terapia Celular, Centro de Ciências Biológicas e da Saúde, Universidade de Caxias do Sul, Caxias do Sul (N.F.N.), Brasil
| | - Marina P Gehring
- Programa de Pós-graduação em Biologia Celular e Molecular (F.B.M., M.P.G., N.F.N), Programa de Pós-graduação em Medicina e Ciências da Saúde, Faculdade de Farmácia, Pontifícia Universidade Católica do RS, Porto Alegre (F.B.M.); Laboratório de Terapia Celular, Centro de Ciências Biológicas e da Saúde, Universidade de Caxias do Sul, Caxias do Sul (N.F.N.), Brasil
| | - Natália F Nicoletti
- Programa de Pós-graduação em Biologia Celular e Molecular (F.B.M., M.P.G., N.F.N), Programa de Pós-graduação em Medicina e Ciências da Saúde, Faculdade de Farmácia, Pontifícia Universidade Católica do RS, Porto Alegre (F.B.M.); Laboratório de Terapia Celular, Centro de Ciências Biológicas e da Saúde, Universidade de Caxias do Sul, Caxias do Sul (N.F.N.), Brasil
| |
Collapse
|
83
|
Savaskan NE, Fan Z, Broggini T, Buchfelder M, Eyüpoglu IY. Neurodegeneration and the Brain Tumor Microenvironment. [corrected]. Curr Neuropharmacol 2016; 13:258-65. [PMID: 26411769 PMCID: PMC4598438 DOI: 10.2174/1570159x13666150122224158] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Malignant brain tumors are characterized by destructive growth and neuronal cell death making them one of the most devastating diseases. Neurodegenerative actions of malignant gliomas resemble mechanisms also found in many neurodegenerative diseases such as Alzheimer's and Parkinson's diseases and amyotrophic lateral sclerosis. Recent data demonstrate that gliomas seize neuronal glutamate signaling for their own growth advantage. Excessive glutamate release via the glutamate/cystine antiporter xCT (system xc-, SLC7a11) renders cancer cells resistant to chemotherapeutics and create the tumor microenvironment toxic for neurons. In particular the glutamate/cystine antiporter xCT takes center stage in neurodegenerative processes and sets this transporter a potential prime target for cancer therapy. Noteworthy is the finding, that reactive oxygen species (ROS) activate transient receptor potential (TRP) channels and thereby TRP channels can potentiate glutamate release. Yet another important biological feature of the xCT/glutamate system is its modulatory effect on the tumor microenvironment with impact on host cells and the cancer stem cell niche. The EMA and FDA-approved drug sulfasalazine (SAS) presents a lead compound for xCT inhibition, although so far clinical trials on glioblastomas with SAS were ambiguous. Here, we critically analyze the mechanisms of action of xCT antiporter on malignant gliomas and in the tumor microenvironment. Deciphering the impact of xCT and glutamate and its relation to TRP channels in brain tumors pave the way for developing important cancer microenvironmental modulators and drugable lead targets.
Collapse
Affiliation(s)
- Nicolai E Savaskan
- Department of Neurosurgery, Universitatsklinikum Erlangen, Friedrich Alexander University of Erlangen- Nürnberg (FAU), Schwabachanlage 6, D-91054 Erlangen, Germany.
| | | | | | | | | |
Collapse
|
84
|
RNF135, RING finger protein, promotes the proliferation of human glioblastoma cells in vivo and in vitro via the ERK pathway. Sci Rep 2016; 6:20642. [PMID: 26856755 PMCID: PMC4746631 DOI: 10.1038/srep20642] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 01/07/2016] [Indexed: 12/21/2022] Open
Abstract
Ring finger protein 135 (RNF135), located on chromosome 17q11.2, is a RING finger domain-containing E3 ubiquitin ligase that was identified as a bio-marker and therapy target of glioblastoma. In our study, we confirmed that RNF135 was up-regulated in glioblastoma tissues compared with normal brain (NB) tissues, and that RNF135 knockdown inhibited proliferation and migration and led to cell cycle arrest in the G0/G1 phase in vivo. By lowering RNF135 expression, phosphorylated Erk and cell cycle protein CDK4 were down-regulated, while p27Kip1 and p21Waf1/Cip1 were up-regulated in U87 and U251 cells in vitro. In addition, using the immunofluorescence double labelling method, we found that RNF135 and P-Erk were co-localized in the cytoplasm and were highly expressed in glioblastoma samples compared with NB tissues. Moreover, the growth of U87 cell-transplanted tumours in nude mice was inhibited while transduced with Lv-shRNF135. Taken together, our findings demonstrate the biological effects of RNF135 in glioblastoma cell proliferation, migration and cell cycle, and its role in the progression of glioblastoma may be associated with the ERK signal transduction pathway.
Collapse
|
85
|
Zhang SS, Xie X, Wen J, Luo KJ, Liu QW, Yang H, Hu Y, Fu JH. TRPV6 plays a new role in predicting survival of patients with esophageal squamous cell carcinoma. Diagn Pathol 2016; 11:14. [PMID: 26818094 PMCID: PMC4730645 DOI: 10.1186/s13000-016-0457-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Accepted: 01/14/2016] [Indexed: 12/26/2022] Open
Abstract
Background TRPV6 is over-expressed and promotes the proliferation and invasion in many cancers. The association between the expression of TRPV6 and clinical outcome in esophageal squamous cell carcinoma (ESCC) has not been studied yet. We aim to elucidate the role of TRPV6 in predicting prognosis of patients with ESCC. Methods In the retrospective study, mRNA level of TRPV6 was examined in patients (N = 174) from Sun Yat-sen University Cancer Center (mRNA cohort) and protein level of TRPV6 was examined in patients (N = 218) from Linzhou Cancer Hospital (protein cohort). Statistical analysis was performed to test the clinical and prognostic significance of TRPV6. Results TRPV6 was down-regulated in ESCC tissues and cell lines. Patients with downregulation of TRPV6 trended to have a higher rate of advanced pT stage in both mRNA cohort (P = 0.089) and protein cohort (P = 0.073), though not statistically significant. No significant association was observed between TRPV6 expression and disease-specific survival (DSS) in both two cohorts. However, stratified survival analysis based on the gender showed that in mRNA cohort, downregulation of TRPV6 was associated with an unfavorable 3-year DSS in patients with male (47.3 % vs 63.6 %, P = 0.027) and with favorable 3-year DSS in patients with female (66.7 % vs 43.0 %, P = 0.031). The result was confirmed in protein cohort. Male patients with downregulation of TRPV6 had a poor 3-year DSS (20.0 % vs 57.1 %,P < 0.001) while female counterparts showed an enhanced 3-year DSS (56.1 % vs 28.6 %, P = 0.005). Conclusion TRPV6 is down-regulated in ESCC. As a predictive biomarker, TRPV6 plays a Janus-like role in predicting survival of male and female ESCC patients.
Collapse
Affiliation(s)
- Shui-Shen Zhang
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, Guangzhou, People's Republic of China. .,Guangdong Esophageal Cancer Research Institute, Guangzhou, People's Republic of China. .,Department of Thoracic Oncology, Sun Yat-Sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China. .,Department of Thoracic Surgery, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, People's Republic of China.
| | - Xuan Xie
- Department of Thoracic Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, People's Republic of China.
| | - Jing Wen
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, Guangzhou, People's Republic of China. .,Guangdong Esophageal Cancer Research Institute, Guangzhou, People's Republic of China. .,Department of Thoracic Oncology, Sun Yat-Sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China.
| | - Kong-Jia Luo
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, Guangzhou, People's Republic of China. .,Guangdong Esophageal Cancer Research Institute, Guangzhou, People's Republic of China. .,Department of Thoracic Oncology, Sun Yat-Sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China.
| | - Qian-Wen Liu
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, Guangzhou, People's Republic of China. .,Guangdong Esophageal Cancer Research Institute, Guangzhou, People's Republic of China. .,Department of Thoracic Oncology, Sun Yat-Sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China.
| | - Hong Yang
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, Guangzhou, People's Republic of China. .,Guangdong Esophageal Cancer Research Institute, Guangzhou, People's Republic of China. .,Department of Thoracic Oncology, Sun Yat-Sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China.
| | - Yi Hu
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, Guangzhou, People's Republic of China. .,Guangdong Esophageal Cancer Research Institute, Guangzhou, People's Republic of China. .,Department of Thoracic Oncology, Sun Yat-Sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China.
| | - Jian-Hua Fu
- State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, Guangzhou, People's Republic of China. .,Guangdong Esophageal Cancer Research Institute, Guangzhou, People's Republic of China. .,Department of Thoracic Oncology, Sun Yat-Sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China.
| |
Collapse
|
86
|
Ramanathan G, Mannhalter C. Increased expression of transient receptor potential canonical 6 (TRPC6) in differentiating human megakaryocytes. Cell Biol Int 2016; 40:223-31. [PMID: 26514329 DOI: 10.1002/cbin.10558] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Accepted: 10/28/2015] [Indexed: 12/22/2022]
Abstract
Members of the transient receptor potential (TRP) family of cation conducting channels are found in several tissues and cell types where they have different physiological functions. The canonical TRP channel 6 (TRPC6) is present on the platelet membrane and appears to participate in calcium influx during platelet activation. However, limited information is available on the importance of TRPC channels in megakaryocytes (MKs), the precursor cells of platelets. We determined the mRNA and protein expression of TRPC family members and investigated the role of TRPC6 for proliferation and differentiation of human MKs derived from CD34+ progenitor cells. TRPC6 transcripts were highly expressed during the differentiation of MKs and TRPC6 protein was detectable in MK cytoplasm by confocal staining. TRPC6 channel activity was modulated by pharmacological approaches using flufenamic acid (FFA) for activation and SKF96365 for inhibition. Upon FFA stimulation in MKs, an increase in intracellular calcium was observed, which was blocked by SKF96365 at 10 µM concentration. Incubation of MKs with SKF96365 resulted in a reduction in thrombopoietin-stimulated cell proliferation. Our results suggest a role of TRPC6 in calcium homeostasis during MK development, particularly for cell proliferation.
Collapse
Affiliation(s)
| | - Christine Mannhalter
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| |
Collapse
|
87
|
Villalobos C, Sobradillo D, Hernández-Morales M, Núñez L. Remodeling of Calcium Entry Pathways in Cancer. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 898:449-66. [DOI: 10.1007/978-3-319-26974-0_19] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
88
|
TRPC6 specifically interacts with APP to inhibit its cleavage by γ-secretase and reduce Aβ production. Nat Commun 2015; 6:8876. [PMID: 26581893 PMCID: PMC4696454 DOI: 10.1038/ncomms9876] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 10/12/2015] [Indexed: 01/12/2023] Open
Abstract
Generation of β-amyloid (Aβ) peptide in Alzheimer's disease involves cleavage of amyloid precursor protein (APP) by γ-secretase, a protease known to cleave several substrates, including Notch. Finding specific modulators for γ-secretase could be a potential avenue to treat the disease. Here, we report that transient receptor potential canonical (TRPC) 6 specifically interacts with APP leading to inhibition of its cleavage by γ-secretase and reduction in Aβ production. TRPC6 interacts with APP (C99), but not with Notch, and prevents C99 interaction with presenilin 1 (PS1). A fusion peptide derived from TRPC6 also reduces Aβ levels without effect on Notch cleavage. Crossing APP/PS1 mice with TRPC6 transgenic mice leads to a marked reduction in both plaque load and Aβ levels, and improvement in structural and behavioural impairment. Thus, TRPC6 specifically modulates γ-secretase cleavage of APP and preventing APP (C99) interaction with PS1 via TRPC6 could be a novel strategy to reduce Aβ formation. Attempts to treat Alzheimer's disease by targeting γ-secretase cleavage of APP into Aß have been unsuccessful, partially due to off-target effects. Here, the authors identify TRPC6 as a novel γ-secretase modulator, showing that it interacts with APP to regulate Aß levels while sparing Notch cleavage.
Collapse
|
89
|
Najar F, Nasehi M, Haeri-Rohani SA, Zarrindast MR. The involvement of medial septum 5-HT1 and 5-HT2 receptors on ACPA-induced memory consolidation deficit: possible role of TRPC3, TRPC6 and TRPV2. J Psychopharmacol 2015; 29:1200-8. [PMID: 26464456 DOI: 10.1177/0269881115609021] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The present study evaluates the roles of serotonergic receptors of the medial septum on amnesia induced by arachidonylcyclopropylamide (ACPA; as selective cannabinoid CB1 receptor agonist) in adult male Wistar rats. Cannulae were implanted in the medial septum of the brain of the rats. The animals were trained in a passive avoidance learning apparatus, and were tested 24 hours after training for step-through latency. Results indicated that post-training medial septum administration of CP94253 (5-HT1B/1D receptor agonist) and cinancerine (as 5-HT2 receptor antagonist) reduced the step-through latency showing an amnesic response, while GR127935 (5-HT1B/1D receptor antagonist) and αm5htm (as 5-HT2A/2B/2D receptor agonist) did not alter memory consolidation by themselves. On continuing the test, the results showed that CP94253 increased and GR127935 did not alter ACPA (0.02 µg/rat)-induced memory impairment, respectively. Other data indicated that αm5htm induced a modulatory effect, while cinancerine restored ACPA-induced amnesia. Using SKF-96365 (inhibitor of transient receptor potential TRPC3/6 and TRPV2 channels) demonstrated that TRPC3, TRPC3 and TRPV2 channels have a significant role, according to our results.
Collapse
Affiliation(s)
- Farzaneh Najar
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Mohammad Nasehi
- Cognitive and Neuroscience Research Center (CNRC), Medical Genomics Research Center and School of Advanced Sciences in Medicine, Tehran Medical Sciences Branch, Islamic Azad University, Tehran, Iran
| | - Seyed-Ali Haeri-Rohani
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Mohammad-Reza Zarrindast
- Cognitive and Neuroscience Research Center (CNRC), Medical Genomics Research Center and School of Advanced Sciences in Medicine, Tehran Medical Sciences Branch, Islamic Azad University, Tehran, Iran Department of Pharmacology School of Medicine, Tehran University of Basic Sciences, Tehran, Iran Iranian National Center for Addiction Studies, Tehran University of Medical Sciences, Tehran, Iran School of Cognitive Sciences, Institute for Research in Fundamental Sciences (IPM), Tehran, Iran Substance Abuse and Dependence Research Center, University of School Welfare and Rehabilitation Sciences, Tehran Iran
| |
Collapse
|
90
|
Simon OJ, Müntefering T, Grauer OM, Meuth SG. The role of ion channels in malignant brain tumors. J Neurooncol 2015; 125:225-35. [PMID: 26334315 DOI: 10.1007/s11060-015-1896-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2015] [Accepted: 08/14/2015] [Indexed: 12/15/2022]
Abstract
Malignant gliomas are the most common primary brain tumors and have poor clinical prognosis, despite multimodal therapeutic strategies. In recent years, ion channels have emerged as major players in tumor pathophysiology regarding all hallmarks of cancer. Since ion channels are easily accessible structures, they may prove to be effective targets for canner therapy, although their broad expression pattern and role in physiological processes should be taken into consideration. This review summarizes the current knowledge on the role of ion channels in the pathophysiology of malignant gliomas, especially glioblastoma, and evaluates their potential role in targeted antiglioma therapy.
Collapse
Affiliation(s)
- Ole J Simon
- Department of Neurology, University of Münster, Albert-Schweitzer-Campus 1, 48149, Münster, Germany.
| | - Thomas Müntefering
- Department of Neurology, University of Münster, Albert-Schweitzer-Campus 1, 48149, Münster, Germany
| | - Oliver M Grauer
- Department of Neurology, University of Münster, Albert-Schweitzer-Campus 1, 48149, Münster, Germany
| | - Sven G Meuth
- Department of Neurology, University of Münster, Albert-Schweitzer-Campus 1, 48149, Münster, Germany
| |
Collapse
|
91
|
Ichikawa J, Inoue R. TRPC6 regulates cell cycle progression by modulating membrane potential in bone marrow stromal cells. Br J Pharmacol 2015; 171:5280-94. [PMID: 25041367 DOI: 10.1111/bph.12840] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2013] [Revised: 06/26/2014] [Accepted: 07/01/2014] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND AND PURPOSE Ca(2+) influx is important for cell cycle progression, but the mechanisms involved seem to vary. We investigated the potential roles of transient receptor potential (TRP) channels and store-operated Ca(2+) entry (SOCE)-related molecules STIM (stromal interaction molecule)/Orai in the cell cycle progression of rat bone marrow stromal cells (BMSCs), a reliable therapeutic resource for regenerative medicine. EXPERIMENTAL APPROACH PCR and immunoblot analyses were used to examine mRNA and protein levels, fluorescence imaging and patch clamping for Ca(2+) influx and membrane potential measurements, and flow cytometry for cell cycle analysis. KEY RESULTS Cell cycle synchronization of BMSCs revealed S phase-specific enhancement of TRPC1, STIM and Orai mRNA and protein expression. In contrast, TRPC6 expression decreased in the S phase and increased in the G1 phase. Resting membrane potential (RMP) of BMSCs was most negative and positive in the S and G1 phases, respectively, and was accompanied by an enhancement and attenuation of SOCE respectively. Chemically depolarizing/hyperpolarizing the membrane erased these differences in SOCE magnitude during the cell cycle. siRNA knockdown of TRPC6 produced a negative shift in RMP, increased SOCE and caused redistribution of BMSCs with increased populations in the S and G2 /M phases and accumulation of cyclins A2 and B1. A low concentration of Gd(3+) (1 μM) suppressed BMSC proliferation at its concentration to inhibit SOC channels relatively specifically. CONCLUSIONS AND IMPLICATIONS TRPC6, by changing the membrane potential, plays a pivotal role in controlling the SOCE magnitude, which is critical for cell cycle progression of BMSCs. This finding provides a new therapeutic strategy for regulating BMSC proliferation.
Collapse
Affiliation(s)
- Jun Ichikawa
- Department of Physiology, School of Medicine, Fukuoka University, Fukuoka, Japan
| | | |
Collapse
|
92
|
Chen C, Zhang Y, Loomis MM, Upton MP, Lohavanichbutr P, Houck JR, Doody DR, Mendez E, Futran N, Schwartz SM, Wang P. Genome-Wide Loss of Heterozygosity and DNA Copy Number Aberration in HPV-Negative Oral Squamous Cell Carcinoma and Their Associations with Disease-Specific Survival. PLoS One 2015; 10:e0135074. [PMID: 26247464 PMCID: PMC4527746 DOI: 10.1371/journal.pone.0135074] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Accepted: 07/17/2015] [Indexed: 01/15/2023] Open
Abstract
Oral squamous cell cancer of the oral cavity and oropharynx (OSCC) is associated with high case-fatality. For reasons that are largely unknown, patients with the same clinical and pathologic staging have heterogeneous response to treatment and different probability of recurrence and survival, with patients with Human Papillomavirus (HPV)-positive oropharyngeal tumors having the most favorable survival. To gain insight into the complexity of OSCC and to identify potential chromosomal changes that may be associated with OSCC mortality, we used Affymtrix 6.0 SNP arrays to examine paired DNA from peripheral blood and tumor cell populations isolated by laser capture microdissection to assess genome-wide loss of heterozygosity (LOH) and DNA copy number aberration (CNA) and their associations with risk factors, tumor characteristics, and oral cancer-specific mortality among 75 patients with HPV-negative OSCC. We found a highly heterogeneous and complex genomic landscape of HPV-negative tumors, and identified regions in 4q, 8p, 9p and 11q that seem to play an important role in oral cancer biology and survival from this disease. If confirmed, these findings could assist in designing personalized treatment or in the creation of models to predict survival in patients with HPV-negative OSCC.
Collapse
Affiliation(s)
- Chu Chen
- Program in Epidemiology, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
- Department of Otolaryngology–Head and Neck Surgery, University of Washington, Seattle, Washington, United States of America
- Department of Epidemiology, University of Washington, Seattle, Washington, United States of America
- * E-mail:
| | - Yuzheng Zhang
- Program in Biostatistics and Biomathematics, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - Melissa M. Loomis
- Program in Epidemiology, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - Melissa P. Upton
- Department of Pathology, University of Washington, Seattle, Washington, United States of America
| | - Pawadee Lohavanichbutr
- Program in Epidemiology, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - John R. Houck
- Program in Epidemiology, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - David R. Doody
- Program in Epidemiology, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - Eduardo Mendez
- Program in Epidemiology, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
- Department of Otolaryngology–Head and Neck Surgery, University of Washington, Seattle, Washington, United States of America
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - Neal Futran
- Department of Otolaryngology–Head and Neck Surgery, University of Washington, Seattle, Washington, United States of America
| | - Stephen M. Schwartz
- Program in Epidemiology, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
- Department of Epidemiology, University of Washington, Seattle, Washington, United States of America
| | - Pei Wang
- Program in Biostatistics and Biomathematics, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
- Department of Genetics and Genomics Sciences, Mt. Sinai School of Medicine, New York, New York, United States of America
| |
Collapse
|
93
|
He H, Yao M, Zhang W, Tao B, Liu F, Li S, Dong Y, Zhang C, Meng Y, Li Y, Hu G, Luo C, Zong H, Lu Y. MEK2 is a prognostic marker and potential chemo-sensitizing target for glioma patients undergoing temozolomide treatment. Cell Mol Immunol 2015; 13:658-68. [PMID: 26189368 DOI: 10.1038/cmi.2015.46] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Revised: 04/30/2015] [Accepted: 05/01/2015] [Indexed: 02/06/2023] Open
Abstract
Although temozolomide (TMZ) is the first-line chemotherapeutic agent for glioblastoma, it is often non-curative due to drug resistance. To overcome the resistance of glioblastoma cells to TMZ, it is imperative to identify prognostic markers for outcome prediction and to develop chemo-sensitizing agents. Here, the gene expression profiles of TMZ-resistant and TMZ-sensitive samples were compared by microarray analysis, and mitogen-activated protein kinase kinase 2 (MEK2) was upregulated specifically in resistant glioma cells but not in sensitive tumor cells or non-tumor tissues. Moreover, a comprehensive analysis of patient data revealed that the increased level of MEK2 expression correlated well with the advancement of glioma grade and worse prognosis in response to TMZ treatment. Furthermore, reducing the level of MEK2 in U251 glioma cell lines or xenografted glioma models through shRNA-mediated gene knockdown inhibited cell proliferation and enhanced the sensitivity of cells toward TMZ treatment. Further analysis of tumor samples from glioma patients by real-time PCR indicated that an increased MEK2 expression level was closely associated with the activation of many drug resistance genes. Finally, these resistance genes were downregulated after MEK2 was silenced in vitro, suggesting that the mechanism of MEK2-induced chemo-resistance could be mediated by the transcriptional activation of these resistance genes. Collectively, our data indicated that the expression level of MEK2 could serve as a prognostic marker for glioma chemotherapy and that MEK2 antagonists can be used as chemo-sensitizers to enhance the treatment efficacy of TMZ.
Collapse
Affiliation(s)
- Hua He
- Department of Neurosurgery, Changzheng Hospital, Second Affiliated Hospital of Second Military Medical University, 415 Fengyang Road, Shanghai 200003, P.R.China
| | - Maojin Yao
- Department of Microbiology, Immunology and Cancer Biology, School of Medicine, University of Virginia, USA
| | - Wenhao Zhang
- Department of Hematology, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Bangbao Tao
- Department of Neurosurgery, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Feili Liu
- Department of Neurosurgery, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Shu Li
- Department of Pathophysiology, Wannan Medical College, 22 Wenchang Road Wuhu 241002, China
| | - Yan Dong
- Department of Neurosurgery, Changzheng Hospital, Second Affiliated Hospital of Second Military Medical University, 415 Fengyang Road, Shanghai 200003, P.R.China
| | - Chenran Zhang
- Department of Neurosurgery, Changzheng Hospital, Second Affiliated Hospital of Second Military Medical University, 415 Fengyang Road, Shanghai 200003, P.R.China
| | - Yicheng Meng
- Department of Neurosurgery, Changzheng Hospital, Second Affiliated Hospital of Second Military Medical University, 415 Fengyang Road, Shanghai 200003, P.R.China
| | - Yuxin Li
- Department of Neurosurgery, Changzheng Hospital, Second Affiliated Hospital of Second Military Medical University, 415 Fengyang Road, Shanghai 200003, P.R.China
| | - Guohan Hu
- Department of Neurosurgery, Changzheng Hospital, Second Affiliated Hospital of Second Military Medical University, 415 Fengyang Road, Shanghai 200003, P.R.China
| | - Chun Luo
- Department of Neurosurgery, Changzheng Hospital, Second Affiliated Hospital of Second Military Medical University, 415 Fengyang Road, Shanghai 200003, P.R.China
| | - Hui Zong
- Department of Microbiology, Immunology and Cancer Biology, School of Medicine, University of Virginia, USA
| | - Yicheng Lu
- Department of Neurosurgery, Changzheng Hospital, Second Affiliated Hospital of Second Military Medical University, 415 Fengyang Road, Shanghai 200003, P.R.China
| |
Collapse
|
94
|
Alptekin M, Eroglu S, Tutar E, Sencan S, Geyik MA, Ulasli M, Demiryurek AT, Camci C. Gene expressions of TRP channels in glioblastoma multiforme and relation with survival. Tumour Biol 2015; 36:9209-13. [PMID: 26088448 DOI: 10.1007/s13277-015-3577-x] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Accepted: 05/15/2015] [Indexed: 12/14/2022] Open
Abstract
Glioblastoma multiforme (GBM) is one of the most lethal forms of cancer in humans, with a median survival of 10 to 12 months. Glioblastoma is highly malignant since the cells are supported by a great number of blood vessels. Although new treatments have been developed by increasing knowledge of molecular nature of the disease, surgical operation remains the standard of care. The TRP (transient receptor potential) superfamily consists of cation-selective channels that have roles in sensory physiology such as thermo- and osmosensation and in several complex diseases such as cancer, cardiovascular, and neuronal diseases. The aim of this study was to investigate the expression levels of TRP channel genes in patients with glioblastoma multiforme and to evaluate the relationship between TRP gene expressions and survival of the patients. Thirty-three patients diagnosed with glioblastoma were enrolled to the study. The expression levels of 21 TRP genes were quantified by using qRT-PCR with dynamic array 48 × 48 chip (BioMark HD System, Fluidigm, South San Francisco, CA, USA). TRPC1, TRPC6, TRPM2, TRPM3, TRPM7, TRPM8, TRPV1, and TRPV2 were found significantly higher in glioblastoma patients. Moreover, there was a significant relationship between the overexpression of TRP genes and the survival of the patients. These results demonstrate for the first time that TRP channels contribute to the progression and survival of the glioblastoma patients.
Collapse
Affiliation(s)
- M Alptekin
- Department of Neurosurgery, Faculty of Medicine, University of Gaziantep, Gaziantep, 27310, Turkey
| | - S Eroglu
- Department of Medical Biology, Faculty of Medicine, University of Gaziantep, Gaziantep, 27310, Turkey
| | - E Tutar
- Department of Pathology, Faculty of Medicine, University of Gaziantep, Gaziantep, 27310, Turkey
| | - S Sencan
- Department of Medical Biology, Faculty of Medicine, University of Gaziantep, Gaziantep, 27310, Turkey
| | - M A Geyik
- Department of Neurosurgery, Faculty of Medicine, University of Gaziantep, Gaziantep, 27310, Turkey
| | - M Ulasli
- Department of Medical Biology, Faculty of Medicine, University of Gaziantep, Gaziantep, 27310, Turkey
| | - A T Demiryurek
- Department of Pharmacology, Faculty of Medicine, University of Gaziantep, Gaziantep, 27310, Turkey
| | - C Camci
- Department of Medical Oncology, Faculty of Medicine, University of Gaziantep, Gaziantep, 27310, Turkey.
| |
Collapse
|
95
|
Song M, Chen D, Yu SP. The TRPC channel blocker SKF 96365 inhibits glioblastoma cell growth by enhancing reverse mode of the Na(+) /Ca(2+) exchanger and increasing intracellular Ca(2+). Br J Pharmacol 2015; 171:3432-47. [PMID: 24641279 DOI: 10.1111/bph.12691] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Revised: 02/26/2014] [Accepted: 03/11/2014] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND AND PURPOSE SKF 96365 is well known for its suppressing effect on human glioblastoma growth by inhibiting pre-activated transient receptor potential canonical (TRPC) channels and Ca(2+) influx. The effect of SKF 96363 on glioblastoma cells, however, may be multifaceted and this possibility has been largely ignored. EXPERIMENTAL APPROACH The effects of SKF 96365 on cell cycle and cell viability of cultured human glioblastoma cells were characterized. Western blot, Ca(2+) imaging and patch clamp recordings were used to delineate cell death mechanisms. siRNA gene knockdown provided additional evidence. KEY RESULTS SKF 96365 repressed glioblastoma cell growth via increasing intracellular Ca(2+) ([Ca(2+) ]i ) irrespective of whether TRPC channels were blocked or not. The effect of SKF 96365 primarily resulted from enhanced reverse operation of the Na(+) /Ca(2+) exchanger (NCX) with an EC50 of 9.79 μM. SKF 96365 arrested the glioblastoma cells in the S and G2 phases and activated p38-MAPK and JNK, which were all prevented by the Ca(2+) chelator BAPTA-AM or EGTA. The expression of NCX in glioblastoma cells was significantly higher than in normal human astrocytes. Knockdown of the NCX1 isoforms diminished the effect of SKF 96365 on glioblastoma cells. CONCLUSIONS AND IMPLICATIONS At the same concentration, SKF 96365 blocks TRPC channels and enhances the reverse mode of the NCX causing [Ca(2+) ]i accumulation and cytotoxicity. This finding suggests an alternative pharmacological mechanism of SKF 96365. It also indicates that modulation of the NCX is an effective method to disrupt Ca(2+) homeostasis and suppress human glioblastoma cells.
Collapse
Affiliation(s)
- M Song
- Department of Anesthesiology, Emory University School of Medicine, Atlanta, GA, USA
| | | | | |
Collapse
|
96
|
Litan A, Langhans SA. Cancer as a channelopathy: ion channels and pumps in tumor development and progression. Front Cell Neurosci 2015; 9:86. [PMID: 25852478 PMCID: PMC4362317 DOI: 10.3389/fncel.2015.00086] [Citation(s) in RCA: 204] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Accepted: 02/23/2015] [Indexed: 12/23/2022] Open
Abstract
Increasing evidence suggests that ion channels and pumps not only regulate membrane potential, ion homeostasis, and electric signaling in excitable cells but also play important roles in cell proliferation, migration, apoptosis and differentiation. Consistent with a role in cell signaling, channel proteins and ion pumps can form macromolecular complexes with growth factors, and cell adhesion and other signaling molecules. And while cancer is still not being cataloged as a channelopathy, as the non-traditional roles of ion pumps and channels are being recognized, it is increasingly being suggested that ion channels and ion pumps contribute to cancer progression. Cancer cell migration requires the regulation of adhesion complexes between migrating cells and surrounding extracellular matrix (ECM) proteins. Cell movement along solid surfaces requires a sequence of cell protrusions and retractions that mainly depend on regulation of the actin cytoskeleton along with contribution of microtubules and molecular motor proteins such as mysoin. This process is triggered and modulated by a combination of environmental signals, which are sensed and integrated by membrane receptors, including integrins and cadherins. Membrane receptors transduce these signals into downstream signaling pathways, often involving the Rho GTPase protein family. These pathways regulate the cytoskeletal rearrangements necessary for proper timing of adhesion, contraction and detachment of cells in order to find their way through extracellular spaces. Migration and adhesion involve continuous modulation of cell motility, shape and volume, in which ion channels and pumps play major roles. Research on cancer cells suggests that certain ion channels may be involved in aberrant tumor growth and channel inhibitors often lead to growth arrest. This review will describe recent research into the role of ion pumps and ion channels in cell migration and adhesion, and how they may contribute to tumor development.
Collapse
Affiliation(s)
- Alisa Litan
- Nemours Center for Childhood Cancer Research, Alfred I. duPont Hospital for Children Wilmington, DE, USA
| | - Sigrid A Langhans
- Nemours Center for Childhood Cancer Research, Alfred I. duPont Hospital for Children Wilmington, DE, USA
| |
Collapse
|
97
|
Bose T, Cieślar-Pobuda A, Wiechec E. Role of ion channels in regulating Ca²⁺ homeostasis during the interplay between immune and cancer cells. Cell Death Dis 2015; 6:e1648. [PMID: 25695601 PMCID: PMC4669790 DOI: 10.1038/cddis.2015.23] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 12/23/2014] [Accepted: 01/06/2015] [Indexed: 01/08/2023]
Abstract
Ion channels are abundantly expressed in both excitable and non-excitable cells, thereby regulating the Ca2+ influx and downstream signaling pathways of physiological processes. The immune system is specialized in the process of cancer cell recognition and elimination, and is regulated by different ion channels. In comparison with the immune cells, ion channels behave differently in cancer cells by making the tumor cells more hyperpolarized and influence cancer cell proliferation and metastasis. Therefore, ion channels comprise an important therapeutic target in anti-cancer treatment. In this review, we discuss the implication of ion channels in regulation of Ca2+ homeostasis during the crosstalk between immune and cancer cell as well as their role in cancer progression.
Collapse
Affiliation(s)
- T Bose
- Leibniz-Institute of Neurobiology, Brenneckestrasse 6, D-39 Magdeburg, Germany
| | - A Cieślar-Pobuda
- 1] Department of Clinical and Experimental Medicine, Division of Cell Biology & Integrative Regenerative Medicine Center (IGEN), Linköping University, 581 85 Linköping, Sweden [2] Biosystems Group, Institute of Automatic Control, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, Poland
| | - E Wiechec
- Department of Clinical and Experimental Medicine, Division of Cell Biology & Integrative Regenerative Medicine Center (IGEN), Linköping University, 581 85 Linköping, Sweden
| |
Collapse
|
98
|
Li S, Wang J, Wei Y, Liu Y, Ding X, Dong B, Xu Y, Wang Y. Critical role of TRPC6 in maintaining the stability of HIF-1α in glioma cells under hypoxia. J Cell Sci 2015; 128:3317-29. [PMID: 26187851 DOI: 10.1242/jcs.173161] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 07/07/2015] [Indexed: 12/19/2022] Open
Abstract
Hypoxia-inducible factor-1 (HIF-1) is a key transcriptional factor responsible for the expression of a broad range of genes that facilitate acclimatization to hypoxia. Its stability is predominantly controlled by rapid hydroxylation of two prolines on its α subunit. However, how the rapid hydroxylation of HIF-1α is regulated is not fully understood. Here, we report that transient receptor potential canonical (TRPC) 6 channels control hydroxylation and stability of HIF-1α in human glioma cells under hypoxia. TRPC6 was rapidly activated by IGF-1R-PLCγ-IP3R pathway in hypoxia. Inhibition of TRPC6 enhanced the levels of α-ketoglutarate (α-KG) and promoted hydroxylation of HIF-1α to suppress HIF-1α accumulation without affecting its transcription or translation. Dimethyloxalylglycine N-(methoxyoxoacetyl)-glycine methyl ester (DMOG), an analog of α-KG, reversed the inhibition of HIF-1α accumulation. Moreover, TRPC6 regulated GLUT1 expression depending on HIF-1α accumulation to affect glucose uptake in hypoxia. Our results suggest that TRPC6 regulates metabolism to affect HIF-1α stability and consequent glucose metabolism in human glioma cells under hypoxia.
Collapse
Affiliation(s)
- Shanshan Li
- Laboratory of Neural Signal Transduction, Institute of Neuroscience, Shanghai Institutes of Biological Sciences, State Key Laboratory of Neuroscience, Chinese Academy of Sciences, Shanghai 200031, China
| | - Jinkui Wang
- Department of Neurosurgery, 1st Affiliated Hospital of Dalian Medical University, Dalian 116011, China
| | - Yi Wei
- Department of Neurosurgery, 1st Affiliated Hospital of Dalian Medical University, Dalian 116011, China
| | - Yongjian Liu
- Department of Neurosurgery, 1st Affiliated Hospital of Dalian Medical University, Dalian 116011, China
| | - Xia Ding
- Laboratory of Neural Signal Transduction, Institute of Neuroscience, Shanghai Institutes of Biological Sciences, State Key Laboratory of Neuroscience, Chinese Academy of Sciences, Shanghai 200031, China
| | - Bin Dong
- Department of Neurosurgery, 1st Affiliated Hospital of Dalian Medical University, Dalian 116011, China
| | - Yinghui Xu
- Department of Neurosurgery, 1st Affiliated Hospital of Dalian Medical University, Dalian 116011, China
| | - Yizheng Wang
- Laboratory of Neural Signal Transduction, Institute of Neuroscience, Shanghai Institutes of Biological Sciences, State Key Laboratory of Neuroscience, Chinese Academy of Sciences, Shanghai 200031, China
| |
Collapse
|
99
|
Gautier M, Dhennin-Duthille I, Ay AS, Rybarczyk P, Korichneva I, Ouadid-Ahidouch H. New insights into pharmacological tools to TR(i)P cancer up. Br J Pharmacol 2014; 171:2582-92. [PMID: 24345078 DOI: 10.1111/bph.12561] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2013] [Revised: 12/09/2013] [Accepted: 12/13/2013] [Indexed: 12/25/2022] Open
Abstract
The aim of this review is to address the recent advances regarding the use of pharmacological agents to target transient receptor potential (TRP) channels in cancer and their potential application in therapeutics. Physiologically, TRP channels are responsible for cation entry (Ca(2+) , Na(+) , Mg(2+) ) in many mammalian cells and regulate a large number of cellular functions. However, dysfunction in channel expression and/or activity can be linked to human diseases like cancer. Indeed, there is growing evidence that TRP channel expression is altered in cancer tissues in comparison with normal ones. Moreover, these proteins are involved in many cancerous processes, including cell proliferation, apoptosis, migration and invasion, as well as resistance to chemotherapy. Among the TRP superfamily, TRPC, TRPV, TRPM and TRPA1 have been shown to play a role in many cancer types, including breast, digestive, gliomal, head and neck, lung and prostate cancers. Pharmacological modulators are used to characterize the functional implications of TRP channels in whole-cell membrane currents, resting membrane potential regulation and intracellular Ca(2+) signalling. Moreover, pharmacological modulation of TRP activity in cancer cells is systematically linked to the effect on cancerous processes (proliferation, survival, migration, invasion, sensitivity to chemotherapeutic drugs). Here we describe the effects of such TRP modulators on TRP activity and cancer cell phenotype. Furthermore, the potency and specificity of these agents will be discussed, as well as the development of new strategies for targeting TRP channels in cancer.
Collapse
Affiliation(s)
- M Gautier
- Laboratory of Cell and Molecular Physiology, SFR CAP-Santé (FED 4231), University of Picardie Jules Verne, UFR Sciences, EA 4667, Amiens, France
| | | | | | | | | | | |
Collapse
|
100
|
Wang T, Chen Z, Zhu Y, Pan Q, Liu Y, Qi X, Jin L, Jin J, Ma X, Hua D. Inhibition of transient receptor potential channel 5 reverses 5-Fluorouracil resistance in human colorectal cancer cells. J Biol Chem 2014; 290:448-56. [PMID: 25404731 DOI: 10.1074/jbc.m114.590364] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
5-Fluorouracil (5-Fu) is commonly used in the chemotherapy of colorectal cancer (CRC), but resistance to 5-Fu occurs in most cases, allowing cancer progression. Suppressing ABCB1 (ATP-binding cassette, subfamily B, member 1), which is a pump overproduced in cancer cells to export cytotoxic drugs, is an attractive strategy to overcome drug resistance. In the present study, transient receptor potential channel TrpC5 was found to be overproduced at the mRNA and protein levels together with ABCB1 in 5-Fu-resistant human CRC HCT-8 (HCT-8/5-Fu) and LoVo (LoVo/5-Fu) cells. More nuclear-stabilized β-catenin accumulation was found in HCT-8/5-Fu and LoVo/5-Fu cells than in HCT-8 and LoVo cells. Suppressing TrpC5 expression with TrpC5-specific siRNA inhibited the canonical Wnt/β-catenin signal pathway, reduced the induction of ABCB1, weakened the ABCB1 efflux pump, and caused a remarkable reversal of 5-Fu resistance in HCT-8/5-Fu and LoVo/5-Fu cells. On the contrary, enforcing TrpC5 expression resulted in an activated Wnt/β-catenin signal pathway and up-regulation of ABCB1. Taken together, we demonstrated an essential role of TrpC5 in ABCB1 induction and drug resistance in human CRC cells via promoting nuclear β-catenin accumulation.
Collapse
Affiliation(s)
- Teng Wang
- From the Departments of Medical Oncology and
| | - Zhen Chen
- the School of Pharmaceutical Sciences, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Yifei Zhu
- the School of Pharmaceutical Sciences, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Qiongxi Pan
- the School of Pharmaceutical Sciences, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Yanjun Liu
- the School of Pharmaceutical Sciences, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Xiaowei Qi
- Pathology, Affiliated Hospital of Jiangnan University and Fourth People's Hospital of Wuxi, Wuxi, Jiangsu 214062, China and
| | - Linfang Jin
- Pathology, Affiliated Hospital of Jiangnan University and Fourth People's Hospital of Wuxi, Wuxi, Jiangsu 214062, China and
| | - Jian Jin
- the School of Pharmaceutical Sciences, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Xin Ma
- the School of Pharmaceutical Sciences, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Dong Hua
- From the Departments of Medical Oncology and
| |
Collapse
|