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Al-Lamki RS, Tolkovsky AM, Alawwami M, Lu W, Field SF, Wang J, Pober JS, Bradley JR. Tumor Necrosis Factor Receptor-2 Signals Clear-Cell Renal Carcinoma Proliferation via Phosphorylated 4E Binding Protein-1 and Mitochondrial Gene Translation. THE AMERICAN JOURNAL OF PATHOLOGY 2024; 194:1374-1387. [PMID: 38537932 DOI: 10.1016/j.ajpath.2024.02.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 02/08/2024] [Accepted: 02/21/2024] [Indexed: 04/09/2024]
Abstract
Clear-cell renal cell carcinoma (ccRCC), a tubular epithelial malignancy, secretes tumor necrosis factor (TNF), which signals ccRCC cells in an autocrine manner via two cell surface receptors, TNFR1 and TNFR2, to activate shared and distinct signaling pathways. Selective ligation of TNFR2 drives cell cycle entry of malignant cells via a signaling pathway involving epithelial tyrosine kinase, vascular endothelial cell growth factor receptor type 2, phosphatidylinositol-3-kinase, Akt, pSer727-Stat3, and mammalian target of rapamycin. In this study, phosphorylated 4E binding protein-1 (4EBP1) serine 65 (pSer65-4EBP1) was identified as a downstream target of this TNFR2 signaling pathway. pSer65-4EBP1 expression was significantly elevated relative to total 4EBP1 in ccRCC tissue compared with that in normal kidneys, with signal intensity increasing with malignant grade. Selective ligation of TNFR2 with the TNFR2-specific mutein increased pSer65-4EBP1 expression in organ cultures that co-localized with internalized TNFR2 in mitochondria and increased expression of mitochondrially encoded COX (cytochrome c oxidase subunit) Cox1, as well as nuclear-encoded Cox4/5b subunits. Pharmacologic inhibition of mammalian target of rapamycin reduced both TNFR2-specific mutein-mediated phosphorylation of 4EBP1 and cell cycle activation in tumor cells while increasing cell death. These results signify the importance of pSer65-4EBP1 in mediating TNFR2-driven cell-cycle entry in tumor cells in ccRCC and implicate a novel relationship between the TNFR2/pSer65-4EBP1/COX axis and mitochondrial function.
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MESH Headings
- Humans
- Adaptor Proteins, Signal Transducing/metabolism
- Adaptor Proteins, Signal Transducing/genetics
- Carcinoma, Renal Cell/metabolism
- Carcinoma, Renal Cell/pathology
- Carcinoma, Renal Cell/genetics
- Cell Cycle Proteins/metabolism
- Cell Cycle Proteins/genetics
- Cell Line, Tumor
- Cell Proliferation
- Kidney Neoplasms/metabolism
- Kidney Neoplasms/pathology
- Kidney Neoplasms/genetics
- Mitochondria/metabolism
- Phosphoproteins/metabolism
- Phosphorylation
- Protein Biosynthesis
- Receptors, Tumor Necrosis Factor, Type II/metabolism
- Receptors, Tumor Necrosis Factor, Type II/genetics
- Signal Transduction
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Affiliation(s)
- Rafia S Al-Lamki
- Department of Medicine, National Institute of Health Research Cambridge Biomedical Research Centre, University of Cambridge, Cambridge, United Kingdom.
| | - Aviva M Tolkovsky
- Department of Clinical Neurosciences, The Clifford Allbutt Building, University of Cambridge, Cambridge, United Kingdom
| | - Mohammad Alawwami
- Department of Medicine, National Institute of Health Research Cambridge Biomedical Research Centre, University of Cambridge, Cambridge, United Kingdom
| | - WanHua Lu
- Department of Medicine, National Institute of Health Research Cambridge Biomedical Research Centre, University of Cambridge, Cambridge, United Kingdom
| | - Sarah F Field
- Dementia Research Institute, Island Research Building, University of Cambridge, Cambridge, United Kingdom
| | - Jun Wang
- Department of Medicine, National Institute of Health Research Cambridge Biomedical Research Centre, University of Cambridge, Cambridge, United Kingdom
| | - Jordan S Pober
- Department of Immunobiology, Yale University, New Haven, Connecticut
| | - John R Bradley
- Department of Medicine, National Institute of Health Research Cambridge Biomedical Research Centre, University of Cambridge, Cambridge, United Kingdom
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2
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Kovacheva E, Gevezova M, Maes M, Sarafian V. Mast Cells in Autism Spectrum Disorder-The Enigma to Be Solved? Int J Mol Sci 2024; 25:2651. [PMID: 38473898 DOI: 10.3390/ijms25052651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 02/19/2024] [Accepted: 02/20/2024] [Indexed: 03/14/2024] Open
Abstract
Autism Spectrum Disorder (ASD) is a disturbance of neurodevelopment with a complicated pathogenesis and unidentified etiology. Many children with ASD have a history of "allergic symptoms", often in the absence of mast cell (MC)-positive tests. Activation of MCs by various stimuli may release molecules related to inflammation and neurotoxicity, contributing to the development of ASD. The aim of the present paper is to enrich the current knowledge on the relationship between MCs and ASD by discussing key molecules and immune pathways associated with MCs in the pathogenesis of autism. Cytokines, essential marker molecules for MC degranulation and therapeutic targets, are also highlighted. Understanding the relationship between ASD and the activation of MCs, as well as the involved molecules and interactions, are the main points contributing to solving the enigma. Key molecules, associated with MCs, may provide new insights to the discovery of drug targets for modeling inflammation in ASD.
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Affiliation(s)
- Eleonora Kovacheva
- Department of Medical Biology, Medical University-Plovdiv, 4000 Plovdiv, Bulgaria
- Research Institute, Medical University-Plovdiv, 4000 Plovdiv, Bulgaria
| | - Maria Gevezova
- Department of Medical Biology, Medical University-Plovdiv, 4000 Plovdiv, Bulgaria
- Research Institute, Medical University-Plovdiv, 4000 Plovdiv, Bulgaria
| | - Michael Maes
- Research Institute, Medical University-Plovdiv, 4000 Plovdiv, Bulgaria
- Sichuan Provincial Center for Mental Health, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610072, China
- Key Laboratory of Psychosomatic Medicine, Chinese Academy of Medical Sciences, Chengdu 610072, China
- Department of Psychiatry, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
- Cognitive Fitness and Technology Research Unit, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
- Department of Psychiatry, Medical University-Plovdiv, 4000 Plovdiv, Bulgaria
- Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Victoria Sarafian
- Department of Medical Biology, Medical University-Plovdiv, 4000 Plovdiv, Bulgaria
- Research Institute, Medical University-Plovdiv, 4000 Plovdiv, Bulgaria
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3
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Posansee K, Liangruksa M, Termsaithong T, Saparpakorn P, Hannongbua S, Laomettachit T, Sutthibutpong T. Combined Deep Learning and Molecular Modeling Techniques on the Virtual Screening of New mTOR Inhibitors from the Thai Mushroom Database. ACS OMEGA 2023; 8:38373-38385. [PMID: 37867669 PMCID: PMC10586184 DOI: 10.1021/acsomega.3c04827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 09/12/2023] [Indexed: 10/24/2023]
Abstract
The mammalian target of rapamycin (mTOR) is a protein kinase of the PI3K/Akt signaling pathway that regulates cell growth and division and is an attractive target for cancer therapy. Many reports on finding alternative mTOR inhibitors available in a database contain a mixture of active compound data with different mechanisms, which results in an increased complexity for training the machine learning models based on the chemical features of active compounds. In this study, a deep learning model supported by principal component analysis (PCA) and structural methods was used to search for an alternative mTOR inhibitor from mushrooms. The mTORC1 active compound data set from the PubChem database was first filtered for only the compounds resided near the first-generation inhibitors (rapalogs) within the first two PCA coordinates of chemical features. A deep learning model trained by the filtered data set captured the main characteristics of rapalogs and displayed the importance of steroid cores. After that, another layer of virtual screening by molecular docking calculations was performed on ternary complexes of FKBP12-FRB domains and six compound candidates with high "active" probability scores predicted by the deep learning models. Finally, all-atom molecular dynamics simulations and MMPBSA binding energy analysis were performed on two selected candidates in comparison to rapamycin, which confirmed the importance of ring groups and steroid cores for interaction networks. Trihydroxysterol from Lentinus polychrous Lev. was predicted as an interesting candidate due to the small but effective interaction network that facilitated FKBP12-FRB interactions and further stabilized the ternary complex.
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Affiliation(s)
- Kewalin Posansee
- Theoretical
and Computational Physics Group, Department of Physics, King Mongkut’s University of Technology Thonburi
(KMUTT), Bangkok 10140, Thailand
| | - Monrudee Liangruksa
- National
Nanotechnology Center (NANOTEC), National
Science and Technology Development Agency (NSTDA), Pathum Thani 12120, Thailand
| | - Teerasit Termsaithong
- Theoretical
and Computational Physics Group, Department of Physics, King Mongkut’s University of Technology Thonburi
(KMUTT), Bangkok 10140, Thailand
- Learning
Institute, King Mongkut’s University
of Technology Thonburi (KMUTT), Bangkok 10140, Thailand
| | | | - Supa Hannongbua
- Department
of Chemistry, Faculty of Science, Kasetsart
University, Bangkok 10900, Thailand
| | - Teeraphan Laomettachit
- Theoretical
and Computational Physics Group, Department of Physics, King Mongkut’s University of Technology Thonburi
(KMUTT), Bangkok 10140, Thailand
- Bioinformatics
and Systems Biology Program, School of Bioresources and Technology, King Mongkut’s University of Technology Thonburi
(KMUTT), Bangkok 10150, Thailand
| | - Thana Sutthibutpong
- Theoretical
and Computational Physics Group, Department of Physics, King Mongkut’s University of Technology Thonburi
(KMUTT), Bangkok 10140, Thailand
- Center of
Excellence in Theoretical and Computational Science (TaCS-CoE), Faculty
of Science, King Mongkut’s University
of Technology Thonburi (KMUTT), 126 Pracha Uthit Road, Bang Mod, Thung Khru, Bangkok 10140, Thailand
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Yurube T, Takeoka Y, Kanda Y, Ryosuke K, Kakutani K. Intervertebral disc cell fate during aging and degeneration: apoptosis, senescence, and autophagy. NORTH AMERICAN SPINE SOCIETY JOURNAL (NASSJ) 2023; 14:100210. [PMID: 37090223 PMCID: PMC10113901 DOI: 10.1016/j.xnsj.2023.100210] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 02/25/2023] [Accepted: 03/06/2023] [Indexed: 03/12/2023]
Abstract
Background Degenerative disc disease, a major cause of low back pain and associated neurological symptoms, is a global health problem with the high morbidity, workforce loss, and socioeconomic burden. The present surgical strategy of disc resection and/or spinal fusion results in the functional loss of load, shock absorption, and movement; therefore, the development of new biological therapies is demanded. This achievement requires the understanding of intervertebral disc cell fate during aging and degeneration. Methods Literature review was performed to clarify the current concepts and future perspectives of disc cell fate, focused on apoptosis, senescence, and autophagy. Results The intervertebral disc has a complex structure with the nucleus pulposus (NP), annulus fibrosus (AF), and cartilage endplates. While the AF arises from the mesenchyme, the NP originates from the notochord. Human disc NP notochordal phenotype disappears in adolescence, accompanied with cell death induction and chondrocyte proliferation. Discs morphologically and biochemically degenerate from early childhood as well, thereby suggesting a possible involvement of cell fate including age-related phenotypic changes in the disease process. As the disc is the largest avascular organ in the body, nutrient deprivation is a suspected contributor to degeneration. During aging and degeneration, disc cells undergo senescence, irreversible growth arrest, producing proinflammatory cytokines and matrix-degradative enzymes. Excessive stress ultimately leads to programmed cell death including apoptosis, necroptosis, pyroptosis, and ferroptosis. Autophagy, the intracellular degradation and recycling system, plays a role in maintaining cell homeostasis. While the incidence of apoptosis and senescence increases with age and degeneration severity, autophagy can be activated earlier, in response to limited nutrition and inflammation, but impaired in aged, degenerated discs. The phosphatidylinositol 3-kinase (PI3K)/Akt/mammalian target of rapamycin (mTOR) is a signal integrator to determine disc cell fate. Conclusions Cell fate and microenvironmental regulation by modulating PI3K/Akt/mTOR signaling is a potential biological treatment for degenerative disc disease.
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Naciff JM, Shan YK, Wang X, Daston GP. Article title: Transcriptional profiling efficacy to define biological activity similarity for cosmetic ingredients' safety assessment based on next-generation read-across. FRONTIERS IN TOXICOLOGY 2022; 4:1082222. [PMID: 36618549 PMCID: PMC9811170 DOI: 10.3389/ftox.2022.1082222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 12/05/2022] [Indexed: 12/24/2022] Open
Abstract
The objective of this work was to use transcriptional profiling to assess the biological activity of structurally related chemicals to define their biological similarity and with that, substantiate the validity of a read-across approach usable in risk assessment. Two case studies are presented, one with 4 short alkyl chain parabens: methyl (MP), ethyl (EP), butyl (BP), and propylparaben (PP), as well as their main metabolite, p-hydroxybenzoic acid (pHBA) with the assumption that propylparaben was the target chemical; and a second one with caffeine and its main metabolites theophylline, theobromine and paraxanthine where CA was the target chemical. The comprehensive transcriptional response of MCF7, HepG2, A549 and ICell cardiomyocytes was evaluated (TempO-Seq) after exposure to vehicle-control, each paraben or pHBA, CA or its metabolites, at 3 non-cytotoxic concentrations, for 6 h. Differentially expressed genes (FDR ≥0.05, and fold change ±1.2≥) were identified for each chemical, at each concentration, and used to determine similarities. Each of the chemicals is able to elicit changes in the expression of a number of genes, as compared to controls. Importantly, the transcriptional profile elicited by each of the parabens shares a high degree of similarity across the group. The highest number of genes commonly affected was between butylparaben and PP. The transcriptional profile of the parabens is similar to the one elicited by estrogen receptor agonists, with BP being the closest structural and biological analogue for PP. In the CA case, the transcriptional profile elicited of all four methylxanthines had a high degree of similarity across the cell types, with CA and theophylline being the most active. The most robust response was obtained in the cardiomyocytes with the highest transcriptional profile similarity between CA and TP. The transcriptional profile of the methylxanthines is similar to the one elicited by inhibitors of phosphatidylinositol 3-kinase as well as other kinase inhibitors. Overall, our results support the approach of incorporating transcriptional profiling in well-designed in vitro tests as one robust stream of data to support biological similarity driven read-across procedures and strengthening the traditional structure-based approaches useful in risk assessment.
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Kornel A, Nadile M, Tsiani E. Evidence of the Beneficial Effects of Ursolic Acid against Lung Cancer. Molecules 2022; 27:7466. [PMID: 36364289 PMCID: PMC9655894 DOI: 10.3390/molecules27217466] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 10/21/2022] [Accepted: 10/28/2022] [Indexed: 10/29/2023] Open
Abstract
Lung cancer is the leading cause of cancer-related deaths globally. Despite current treatment approaches that include surgery, chemotherapy, radiation and immunotherapies, lung cancer accounted for 1.79 million deaths worldwide in 2020, emphasizing the urgent need to find novel agents and approaches for more effective treatment. Traditionally, chemicals derived from plants, such as paclitaxel and docetaxel, have been used in cancer treatment, and in recent years, research has focused on finding other plant-derived chemicals that can be used in the fight against lung cancer. Ursolic acid is a polyphenol found in high concentrations in cranberries and other fruits and has been demonstrated to have anti-inflammatory, antioxidant and anticancer properties. In this review, we summarize recent research examining the effects of ursolic acid and its derivatives on lung cancer. Data from in vitro cell culture and in vivo animal studies show potent anticancer effects of ursolic acid and indicate the need for clinical studies.
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Affiliation(s)
- Amanda Kornel
- Department of Health Sciences, Faculty of Applied Health Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada
| | - Matteo Nadile
- Department of Health Sciences, Faculty of Applied Health Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada
| | - Evangelia Tsiani
- Department of Health Sciences, Faculty of Applied Health Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada
- Centre for Bone and Muscle Health, Brock University, St. Catharines, ON L2S 3A1, Canada
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Sun C, Yang X, Jin Z, Gao Z. Combination of mTOR inhibitor PP242 and AMPK activator metformin exerts enhanced inhibitory effects on colorectal carcinoma cells in vitro by blocking multiple kinase pathways. J Chemother 2022:1-11. [PMID: 35731713 DOI: 10.1080/1120009x.2022.2091122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
The second-generation mammalian target of rapamycin (mTOR) inhibitor PP242 has demonstrated limited success in some rapamycin-insensitive tumours. We examined the therapeutic potential of combining PP242 with adenosine 50- monophosphate-activated protein kinase (AMPK) activator metformin, using a panel of colorectal carcinoma (CRC) cell lines. We found that the PP242 and metformin combination enhanced the suppression of CRC cell proliferation, colony formation, and cancer cell apoptosis induction. The effect of this combination was observed on AMPK phosphorylation. Western blotting showed that PP242 inhibited mTORC1 activation, as indicated by the reduced expression of its major substrate p-S6K1 and the partially reduced phosphorylation of eIF4E-binding protein 1 (4E-BP1). The inhibition of mTORC2-mediated AKT phosphorylation at Ser 473 (AKT Ser473) was transient and occurred in the first few hours of PP242 treatment; metformin exposure decreased the PP242 activity, counteracting AKT activation. We further demonstrated that this was related to direct AMPK-mediated phosphorylation of IRS-1 at Ser789. Thus, the combination of PP242 and metformin completely blocked the activity of both mTORC1 and mTORC2 kinase. This study suggests that this combination could be a more effective strategy for the treatment of CRC.
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Affiliation(s)
- Cuicui Sun
- Department of Clinical Pharmacy, Qilu Hospital of Shandong University, Ji'nan, China
| | - Xiaoyan Yang
- Department of Pharmacy, Jinan Maternity and Child Care Hospital, Ji'nan, China
| | - Zhi Jin
- Department of Traditional Chinese Medicine, The Second Hospital of Shandong University, Ji'nan, China
| | - Zuhua Gao
- Department of Pathology, McGill University, Montreal, Quebec, Canada.,Department of Pathology, Beijing You An Hospital, Capital Medical University, Beijing, China
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9
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Carbonic Anhydrase IX Inhibitors as Candidates for Combination Therapy of Solid Tumors. Int J Mol Sci 2021; 22:ijms222413405. [PMID: 34948200 PMCID: PMC8705727 DOI: 10.3390/ijms222413405] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 12/07/2021] [Accepted: 12/10/2021] [Indexed: 02/06/2023] Open
Abstract
Combination therapy is becoming imperative for the treatment of many cancers, as it provides a higher chance of avoiding drug resistance and tumor recurrence. Among the resistance-conferring factors, the tumor microenvironment plays a major role, and therefore, represents a viable target for adjuvant therapeutic agents. Thus, hypoxia and extracellular acidosis are known to select for the most aggressive and resilient phenotypes and build poorly responsive regions of the tumor mass. Carbonic anhydrase (CA, EC 4.2.1.1) IX isoform is a surficial zinc metalloenzyme that is proven to play a central role in regulating intra and extracellular pH, as well as modulating invasion and metastasis processes. With its strong association and distribution in various tumor tissues and well-known druggability, this protein holds great promise as a target to pharmacologically interfere with the tumor microenvironment by using drug combination regimens. In the present review, we summarized recent publications revealing the potential of CA IX inhibitors to intensify cancer chemotherapy and overcome drug resistance in preclinical settings.
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Abdel-Razeq H, Sharaf B, Abdulelah H, Abdel-Razeq N, Salam M, Inserat B, Bater R. From clinical trials to clinical practice: the use of everolimus and exemestane in the treatment of hormone receptor-positive metastatic breast cancer: real-world data. J Chemother 2021; 34:184-189. [PMID: 34486957 DOI: 10.1080/1120009x.2021.1959787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Everolimus combined with exemestane can modulate endocrine resistance. The combination showed significant improvement in progression-free survival (PFS) in phase III clinical trials for hormone receptor positive metastatic breast cancer patients. It also showed serious adverse events. We evaluate the efficacy and prevalence of serious adverse events in a real-world setting. We retrospectively examined 91 breast cancer patients; all were previously treated with chemotherapy and fulvestrant (84% and 59%, respectively). After a 13-month median follow-up, 29% had a partial response, and 32% had stable disease. The PFS was 7.8 months. Due to adverse events, 19% of patients stopped the treatment, while 31% required a dose reduction. Despite enrolling heavier-pretreated patients, our real-world outcome for the efficacy and safety of the exemestane and everolimus match those of the clinical trials. Such results should assure clinicians and lead to wider adoption of this oral, chemotherapy-sparing regimen.
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Affiliation(s)
- Hikmat Abdel-Razeq
- Department of Internal Medicine, King Hussein Cancer Center, Amman, Jordan.,School of Medicine, University of Jordan, Amman, Jordan
| | - Baha' Sharaf
- Department of Internal Medicine, King Hussein Cancer Center, Amman, Jordan
| | - Hazem Abdulelah
- Department of Internal Medicine, King Hussein Cancer Center, Amman, Jordan
| | - Nayef Abdel-Razeq
- Department of Internal Medicine, King Hussein Cancer Center, Amman, Jordan
| | - Mourad Salam
- Department of Internal Medicine, King Hussein Cancer Center, Amman, Jordan
| | - Bayan Inserat
- Department of Scientific Affairs and Research, King Hussein Cancer Center, Amman, Jordan
| | - Rayan Bater
- Department of Internal Medicine, King Hussein Cancer Center, Amman, Jordan
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Mardanshahi A, Gharibkandi NA, Vaseghi S, Abedi SM, Molavipordanjani S. The PI3K/AKT/mTOR signaling pathway inhibitors enhance radiosensitivity in cancer cell lines. Mol Biol Rep 2021; 48:1-14. [PMID: 34357550 DOI: 10.1007/s11033-021-06607-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 07/29/2021] [Indexed: 11/29/2022]
Abstract
INTRODUCTION Radiotherapy is one of the most common types of cancer treatment modalities. Radiation can affect both cancer and normal tissues, which limits the whole delivered dose. It is well documented that radiation activates phosphatidylinositol 3-kinase (PI3K) and AKT signaling pathway; hence, the inhibition of this pathway enhances the radiosensitivity of tumor cells. The mammalian target of rapamycin (mTOR) is a regulator that is involved in autophagy, cell growth, proliferation, and survival. CONCLUSION The inhibition of mTOR as a downstream mediator of the PI3K/AKT signaling pathway represents a vital option for more effective cancer treatments. The combination of PI3K/AKT/mTOR inhibitors with radiation can increase the radiosensitivity of malignant cells to radiation by autophagy activation. Therefore, this review aims to discuss the impact of such inhibitors on the cell response to radiation.
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Affiliation(s)
- Alireza Mardanshahi
- Department of Radiology and Nuclear Medicine, Faculty of Medicine, Cardiovascular Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| | - Nasrin Abbasi Gharibkandi
- Department of Radiopharmacy, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Samaneh Vaseghi
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Seyed Mohammad Abedi
- Department of Radiology and Nuclear Medicine, Faculty of Medicine, Cardiovascular Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| | - Sajjad Molavipordanjani
- Department of Radiology and Nuclear Medicine, Faculty of Medicine, Cardiovascular Research Center, Mazandaran University of Medical Sciences, Sari, Iran.
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Tsiani E, Tsakiridis N, Kouvelioti R, Jaglanian A, Klentrou P. Current Evidence of the Role of the Myokine Irisin in Cancer. Cancers (Basel) 2021; 13:cancers13112628. [PMID: 34071869 PMCID: PMC8199282 DOI: 10.3390/cancers13112628] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 05/16/2021] [Accepted: 05/22/2021] [Indexed: 02/06/2023] Open
Abstract
Simple Summary Regular exercise/physical activity is beneficial for the health of an individual and lowers the risk of getting different diseases, including cancer. How exactly exercise results in these health benefits is not known. Recent studies suggest that the molecule irisin released by muscles into the blood stream after exercise may be responsible for these effects. This review summarizes all the available in vitro/cell culture, animal and human studies that have investigated the relationship between cancer and irisin with the aim to shed light and understand the possible role of irisin in cancer. The majority of the in vitro studies indicate anticancer properties of irisin, but more animal and human studies are required to better understand the exact role of irisin in cancer. Abstract Cancer is a disease associated with extreme human suffering, a huge economic cost to health systems, and is the second leading cause of death worldwide. Regular physical activity is associated with many health benefits, including reduced cancer risk. In the past two decades, exercising/contracting skeletal muscles have been found to secrete a wide range of biologically active proteins, named myokines. Myokines are delivered, via the circulation, to different cells/tissues, bind to their specific receptors and initiate signaling cascades mediating the health benefits of exercise. The present review summarizes the existing evidence of the role of the myokine irisin in cancer. In vitro studies have shown that the treatment of various cancer cells with irisin resulted in the inhibition of cell proliferation, survival, migration/ invasion and induced apoptosis by affecting key proliferative and antiapoptotic signaling pathways. However, the effects of irisin in humans remains unclear. Although the majority of the existing studies have found reduced serum irisin levels in cancer patients, a few studies have shown the opposite. Similarly, the majority of studies have found increased levels of irisin in cancer tissues, with a few studies showing the opposite trend. Clearly, further investigations are required to determine the exact role of irisin in cancer.
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Affiliation(s)
- Evangelia Tsiani
- Department of Health Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada; (N.T.); (R.K.); (A.J.)
- Centre for Bone and Muscle Health, Brock University, St. Catharines, ON L2S 3A1, Canada;
- Correspondence:
| | - Nicole Tsakiridis
- Department of Health Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada; (N.T.); (R.K.); (A.J.)
| | - Rozalia Kouvelioti
- Department of Health Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada; (N.T.); (R.K.); (A.J.)
- Department of Kinesiology, Brock University, St. Catharines, ON L2S 3A1, Canada
| | - Alina Jaglanian
- Department of Health Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada; (N.T.); (R.K.); (A.J.)
| | - Panagiota Klentrou
- Centre for Bone and Muscle Health, Brock University, St. Catharines, ON L2S 3A1, Canada;
- Department of Kinesiology, Brock University, St. Catharines, ON L2S 3A1, Canada
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Marinaki S, Vallianou K, Melexopoulou C, Lionaki S, Darema M, Lambrou P, Boletis I. The Changing Landscape of Pneumocystis Jiroveci Infection in Kidney Transplant Recipients: Single-Center Experience of Late-Onset Pneumocystis Pneumonia. Transplant Proc 2021; 53:1576-1582. [PMID: 33962778 DOI: 10.1016/j.transproceed.2021.03.026] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Accepted: 03/10/2021] [Indexed: 12/25/2022]
Abstract
BACKGROUND Pneumocystis jiroveci pneumonia (PCP) is a life-threatening pulmonary infection after kidney transplantation (KTx). Its onset in the current era of modern immunosuppression and of routine use of universal PCP prophylaxis seems to differ from its onset in previous decades in terms of late onset with subtle clinical presentation, indicating a need for increased vigilance. METHODS We retrospectively studied all KTx recipients from our center who underwent bronchoscopy and bronchoalveolar lavage (BAL) between 2009 and 2018. Of these, all cases with confirmed PCP any time after the first post-KTx year were included in the analysis. RESULTS Among 60 patients with KTx who had undergone bronchoscopy and BAL, 12 cases with late-onset PCP were identified. PCP appeared late at a median of 10.8 (interquartile range, 2.4-15.8) years after transplantation. Patients' mean age was 59 years, and all were receiving stable low-dose immunosuppression. Most of the patients (67%) had received PCP prophylaxis after KTx. Five out of 12 patients (42%) had concomitant cytomegalovirus (CMV) reactivation at the time of PCP. In almost all cases, clinical presentation was mild. Treatment consisted of trimethoprim-sulfamethoxazole (TMP-SMX) and intravenous corticosteroid administration, and concomitant immunosuppression was temporarily reduced or withdrawn. Outcome was generally good. None of the patients developed respiratory insufficiency or required mechanical ventilation. One patient died as a result of sepsis, and 3 more with preexisting advanced chronic kidney disease subsequently lost their grafts. CONCLUSION Renal transplant recipients are at risk of late-onset PCP, even at a steady state of low-dose maintenance immunosuppression. Because of its subtle clinical presentation, high suspicion of the disease is warranted. Its early recognition and proper management are essential for a successful outcome.
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Affiliation(s)
- Smaragdi Marinaki
- Nephrology and Kidney Transplantation Clinic, Laiko Hospital, National and Kapodistrian University of Athens, Faculty of Medicine, Athens, Greece
| | - Kalliopi Vallianou
- Nephrology and Kidney Transplantation Clinic, Laiko Hospital, National and Kapodistrian University of Athens, Faculty of Medicine, Athens, Greece.
| | - Christina Melexopoulou
- Nephrology and Kidney Transplantation Clinic, Laiko Hospital, National and Kapodistrian University of Athens, Faculty of Medicine, Athens, Greece
| | - Sophia Lionaki
- 2nd Department of Internal Medicine, Attikon Hospital, National and Kapodistrian University of Athens, Faculty of Medicine, Athens, Greece
| | - Maria Darema
- Nephrology and Kidney Transplantation Clinic, Laiko Hospital, National and Kapodistrian University of Athens, Faculty of Medicine, Athens, Greece
| | | | - Ioannis Boletis
- Nephrology and Kidney Transplantation Clinic, Laiko Hospital, National and Kapodistrian University of Athens, Faculty of Medicine, Athens, Greece
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14
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Chou MH, Chuang HC, Lin YT, Tsai MH, Kao YH, Lin IC, Huang TL, Fang FM, Chien CY. Targeting mTOR-CCL20 Signaling May Improve Response to Docetaxel in Head and Neck Squamous Cell Carcinoma. Int J Mol Sci 2021; 22:3046. [PMID: 33802643 PMCID: PMC8002492 DOI: 10.3390/ijms22063046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/11/2021] [Accepted: 03/15/2021] [Indexed: 12/02/2022] Open
Abstract
Patients with advanced head and neck squamous cell carcinoma (HNSCC) usually show a dismal prognosis. It is this worthwhile to develop new, effective therapeutic regimens for these patients, such as molecular targeted therapy, which is promising as an alternative or combination treatment for HNSCC. The mammalian target of rapamycin (mTOR) pathway, which plays an important role in the carcinogenesis of HNSCC, is the most frequently activated, and is thus worthy of further investigation. In this study, two human HNSCC cell lines, FaDu and SAS, were evaluated for cell growth with trypan blue staining and tumor growth using an orthotopic xenograft model. The immunohistochemical expression of mTOR in the subcutaneous xenograft model and the inhibitory effects of docetaxel on the growth and state of activation of the PI3K/mTOR pathway were also evaluated and examined by colony formation and Western blot, respectively. Cell proliferation and migration were measured by water-soluble tetrazolium salt (WST-1) and OrisTM cell migration assay, respectively. Furthermore, the effects of rapamycin and BEZ235, a phosphatidylinositol 3-kinases (PI3K) and mTOR inhibitor in combination with docetaxel or CCL20 were evaluated in the FaDu and SAS cells. The results showed that the expression of mTOR was significantly higher in the SAS and FaDu xenograft models than in the control. Docetaxel treatment significantly suppressed HNSCC cell proliferation and migration in vitro via the PI3K/mTOR/CCL-20 signaling pathway. Additionally, when administered in a dose-dependent fashion, mTOR inhibitors inhibited the growth and migration of the HNSCC cells. This combination was synergistic with docetaxel, resulting in almost complete cell growth and migration arrest. In conclusion, docetaxel significantly inhibited HNSCC cell proliferation and migration in vitro via the PI3K/mTOR/CCL-20 signaling pathway. The synergistic and additive activity of mTOR inhibitors combined with docetaxel shows potential as a new treatment strategy for HNSCC.
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Affiliation(s)
- Ming-Huei Chou
- Graduate Institute of Clinical Medical Sciences, Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan;
- Center for General Education, Cheng-Shiu University, Kaohsiung 83347, Taiwan
- Kaohsiung Chang Gung Head and Neck Oncology Group, Cancer Center, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan; (H.-C.C.); (Y.-T.L.); (M.-H.T.); (T.-L.H.); (F.-M.F.)
| | - Hui-Ching Chuang
- Kaohsiung Chang Gung Head and Neck Oncology Group, Cancer Center, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan; (H.-C.C.); (Y.-T.L.); (M.-H.T.); (T.-L.H.); (F.-M.F.)
- Department of Otolaryngology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
| | - Yu-Tsai Lin
- Kaohsiung Chang Gung Head and Neck Oncology Group, Cancer Center, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan; (H.-C.C.); (Y.-T.L.); (M.-H.T.); (T.-L.H.); (F.-M.F.)
- Department of Otolaryngology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
| | - Ming-Hsien Tsai
- Kaohsiung Chang Gung Head and Neck Oncology Group, Cancer Center, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan; (H.-C.C.); (Y.-T.L.); (M.-H.T.); (T.-L.H.); (F.-M.F.)
- Department of Otolaryngology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
| | - Ying-Hsien Kao
- Department of Medical Research, E-Da Hospital, Kaohsiung 82445, Taiwan;
| | - I-Chun Lin
- Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan;
| | - Tai-Lin Huang
- Kaohsiung Chang Gung Head and Neck Oncology Group, Cancer Center, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan; (H.-C.C.); (Y.-T.L.); (M.-H.T.); (T.-L.H.); (F.-M.F.)
- Department of Hematology-Oncology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
| | - Fu-Min Fang
- Kaohsiung Chang Gung Head and Neck Oncology Group, Cancer Center, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan; (H.-C.C.); (Y.-T.L.); (M.-H.T.); (T.-L.H.); (F.-M.F.)
- Department of Radiation Oncology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
| | - Chih-Yen Chien
- Kaohsiung Chang Gung Head and Neck Oncology Group, Cancer Center, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan; (H.-C.C.); (Y.-T.L.); (M.-H.T.); (T.-L.H.); (F.-M.F.)
- Department of Otolaryngology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
- Institute for Translation Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan
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15
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Chung WH. Pleiotropic Effects of Caffeine Leading to Chromosome Instability and Cytotoxicity in Eukaryotic Microorganisms. J Microbiol Biotechnol 2021; 31:171-180. [PMID: 33397827 PMCID: PMC9706025 DOI: 10.4014/jmb.2011.11042] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/20/2020] [Accepted: 11/22/2020] [Indexed: 12/15/2022]
Abstract
Caffeine, a methylxanthine analog of purine bases, is a compound that is largely consumed in beverages and medications for psychoactive and diuretic effects and plays many beneficial roles in neuronal stimulation and enhancement of anti-tumor immune responses by blocking adenosine receptors in higher organisms. In single-cell eukaryotes, however, caffeine somehow impairs cellular fitness by compromising cell wall integrity, inhibiting target of rapamycin (TOR) signaling and growth, and overriding cell cycle arrest caused by DNA damage. Among its multiple inhibitory targets, caffeine specifically interacts with phosphatidylinositol 3-kinase (PI3K)-related kinases causing radiosensitization and cytotoxicity via specialized intermediate molecules. Caffeine potentiates the lethality of cells in conjunction with several other stressors such as oxidants, irradiation, and various toxic compounds through largely unknown mechanisms. In this review, recent findings on caffeine effects and cellular detoxification schemes are highlighted and discussed with an emphasis on the inhibitory interactions between caffeine and its multiple targets in eukaryotic microorganisms such as budding and fission yeasts.
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Affiliation(s)
- Woo-Hyun Chung
- College of Pharmacy, Duksung Women’s University, Seoul 0369, Republic of Korea,Innovative Drug Center, Duksung Women’s University, Seoul 01369, Republic of Korea,Corresponding author Phone: +82-2-901-8737 Fax: +82-2-901-8386 E-mail:
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16
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Baghery Saghchy Khorasani A, Pourbagheri-Sigaroodi A, Pirsalehi A, Safaroghli-Azar A, Zali MR, Bashash D. The PI3K/Akt/mTOR signaling pathway in gastric cancer; from oncogenic variations to the possibilities for pharmacologic interventions. Eur J Pharmacol 2021; 898:173983. [PMID: 33647255 DOI: 10.1016/j.ejphar.2021.173983] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 02/13/2021] [Accepted: 02/23/2021] [Indexed: 12/24/2022]
Abstract
Genetic and epigenetic alterations have been under concentrated investigations for many years in order to unearth the molecules regulating human cancer pathogenesis. However, the identification of a wide range of dysregulated genes and their protein products has raised a question regarding how the results of this large collection of alterations could converge into a formation of one malignancy. The answer may be found in the signaling cascades that regulate the survival and metabolism of the cells. Aberrancies of each participant molecule of such cascades may well result in augmented viability and unlimited proliferation of cancer cells. Among various signaling pathways, the phosphatidylinositol-3-kinase (PI3K) axis has been shown to be activated in about one-third of human cancers. One of the malignancies that is mostly affected by this axis is gastric cancer (GC), one of the most fatal cancers worldwide. In the present review, we aimed to illustrate the significance of the PI3K/Akt/mTOR axis in the pathogenesis of GC and also provided a wide perspective about the application of the inhibitors of this axis in the therapeutic strategies of this malignancy.
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Affiliation(s)
| | - Atieh Pourbagheri-Sigaroodi
- Department of Hematology and Blood Banking, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ali Pirsalehi
- Department of Internal Medicine, School of Medicine, Ayatollah Taleghani Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ava Safaroghli-Azar
- Department of Hematology and Blood Banking, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Reza Zali
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Davood Bashash
- Department of Hematology and Blood Banking, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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17
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Domingo-Relloso A, Huan T, Haack K, Riffo-Campos AL, Levy D, Fallin MD, Terry MB, Zhang Y, Rhoades DA, Herreros-Martinez M, Garcia-Esquinas E, Cole SA, Tellez-Plaza M, Navas-Acien A. DNA methylation and cancer incidence: lymphatic-hematopoietic versus solid cancers in the Strong Heart Study. Clin Epigenetics 2021; 13:43. [PMID: 33632303 PMCID: PMC7908806 DOI: 10.1186/s13148-021-01030-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 02/14/2021] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Epigenetic alterations may contribute to early detection of cancer. We evaluated the association of blood DNA methylation with lymphatic-hematopoietic cancers and, for comparison, with solid cancers. We also evaluated the predictive ability of DNA methylation for lymphatic-hematopoietic cancers. METHODS Blood DNA methylation was measured using the Illumina Infinium methylationEPIC array in 2324 Strong Heart Study participants (41.4% men, mean age 56 years). 788,368 CpG sites were available for differential DNA methylation analysis for lymphatic-hematopoietic, solid and overall cancers using elastic-net and Cox regression models. We conducted replication in an independent population: the Framingham Heart Study. We also analyzed differential variability and conducted bioinformatic analyses to assess for potential biological mechanisms. RESULTS Over a follow-up of up to 28 years (mean 15), we identified 41 lymphatic-hematopoietic and 394 solid cancer cases. A total of 126 CpGs for lymphatic-hematopoietic cancers, 396 for solid cancers, and 414 for overall cancers were selected as predictors by the elastic-net model. For lymphatic-hematopoietic cancers, the predictive ability (C index) increased from 0.58 to 0.87 when adding these 126 CpGs to the risk factor model in the discovery set. The association was replicated with hazard ratios in the same direction in 28 CpGs in the Framingham Heart Study. When considering the association of variability, rather than mean differences, we found 432 differentially variable regions for lymphatic-hematopoietic cancers. CONCLUSIONS This study suggests that differential methylation and differential variability in blood DNA methylation are associated with lymphatic-hematopoietic cancer risk. DNA methylation data may contribute to early detection of lymphatic-hematopoietic cancers.
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Affiliation(s)
- Arce Domingo-Relloso
- Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, New York, NY, USA.
- Department of Chronic Diseases Epidemiology, National Center for Epidemiology, Carlos III Health Institute, Melchor Fernandez Almagro Street, 5, Madrid, Spain.
- Department of Statistics and Operations Research, University of Valencia, Valencia, Spain.
| | - Tianxiao Huan
- The Population Sciences Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
- The Framingham Heart Study, Framingham, MA, USA
| | - Karin Haack
- Population Health Program, Texas Biomedical Research Institute, San Antonio, TX, USA
| | | | - Daniel Levy
- The Population Sciences Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
- The Framingham Heart Study, Framingham, MA, USA
| | - M Daniele Fallin
- Department of Mental Health, Johns Hopkins University, Baltimore, MD, USA
- Department of Epidemiology, Johns Hopkins University, Baltimore, MD, USA
| | - Mary Beth Terry
- Department of Epidemiology, Columbia University Mailman School of Public Health, New York, NY, USA
| | - Ying Zhang
- Department of Biostatistics and Epidemiology, The University of Oklahoma Health Sciences Center, Oklahoma, USA
| | - Dorothy A Rhoades
- Department of Medicine, Stephenson Cancer Center, University of Oklahoma Health Sciences, Oklahoma City, OK, USA
| | | | - Esther Garcia-Esquinas
- Universidad Autonoma de Madrid, Madrid, Spain
- CIBERESP (CIBER of Epidemiology and Public Health), Madrid, Spain
| | - Shelley A Cole
- Population Health Program, Texas Biomedical Research Institute, San Antonio, TX, USA
| | - Maria Tellez-Plaza
- Department of Chronic Diseases Epidemiology, National Center for Epidemiology, Carlos III Health Institute, Melchor Fernandez Almagro Street, 5, Madrid, Spain
| | - Ana Navas-Acien
- Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, New York, NY, USA.
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18
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Smailov B, Alybayev S, Smekenov I, Mursalimov A, Saparbaev M, Sarbassov D, Bissenbaev A. Wheat Germination Is Dependent on Plant Target of Rapamycin Signaling. Front Cell Dev Biol 2020; 8:606685. [PMID: 33330509 PMCID: PMC7719826 DOI: 10.3389/fcell.2020.606685] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 10/21/2020] [Indexed: 12/21/2022] Open
Abstract
Germination is a process of seed sprouting that facilitates embryo growth. The breakdown of reserved starch in the endosperm into simple sugars is essential for seed germination and subsequent seedling growth. At the early stage of germination, gibberellic acid (GA) activates transcription factor GAMYB to promote de novo synthesis of isoforms of α-amylase in the aleurone layer and scutellar epithelium of the embryo. Here, we demonstrate that wheat germination is regulated by plant target of rapamycin (TOR) signaling. TOR is a central component of the essential-nutrient–dependent pathway controlling cell growth in all eukaryotes. It is known that rapamycin, a highly specific allosteric inhibitor of TOR, is effective in yeast and animal cells but ineffective in most of higher plants likely owing to structural differences in ubiquitous rapamycin receptor FKBP12. The action of rapamycin on wheat growth has not been studied. Our data show that rapamycin inhibits germination of wheat seeds and of their isolated embryos in a dose-dependent manner. The involvement of Triticum aestivum TOR (TaTOR) in wheat germination was consistent with the suppression of wheat embryo growth by specific inhibitors of the TOR kinase: pp242 or torin1. Rapamycin or torin1 interfered with GA function in germination because of a potent inhibitory effect on α-amylase and GAMYB gene expression. The TOR inhibitors selectively targeted the GA-dependent gene expression, whereas expression of the abscisic acid-dependent ABI5 gene was not affected by either rapamycin or torin1. To determine whether the TaTOR kinase activation takes place during wheat germination, we examined phosphorylation of a ribosomal protein, T. aestivum S6 kinase 1 (TaS6K1; a substrate of TOR). The phosphorylation of serine 467 (S467) in a hydrophobic motif on TaS6K1 was induced in a process of germination triggered by GA. Moreover, the germination-induced phosphorylation of TaS6K1 on S467 was dependent on TaTOR and was inhibited by rapamycin or torin1. Besides, a gibberellin biosynthesis inhibitor (paclobutrazol; PBZ) blocked not only α-amylase gene expression but also TaS6K1 phosphorylation in wheat embryos. Thus, a hormonal action of GA turns on the synthesis of α-amylase in wheat germination via activation of the TaTOR–S6K1 signaling pathway.
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Affiliation(s)
- Bauyrzhan Smailov
- Department of Molecular Biology and Genetics, Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty, Kazakhstan.,Scientific Research Institute of Biology and Biotechnology Problems, Al-Farabi Kazakh National University, Almaty, Kazakhstan
| | - Sanzhar Alybayev
- Department of Molecular Biology and Genetics, Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty, Kazakhstan.,Scientific Research Institute of Biology and Biotechnology Problems, Al-Farabi Kazakh National University, Almaty, Kazakhstan
| | - Izat Smekenov
- Department of Molecular Biology and Genetics, Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty, Kazakhstan.,Scientific Research Institute of Biology and Biotechnology Problems, Al-Farabi Kazakh National University, Almaty, Kazakhstan
| | - Aibek Mursalimov
- Department of Molecular Biology and Genetics, Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty, Kazakhstan.,Scientific Research Institute of Biology and Biotechnology Problems, Al-Farabi Kazakh National University, Almaty, Kazakhstan
| | - Murat Saparbaev
- Department of Molecular Biology and Genetics, Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty, Kazakhstan.,Groupe «Mechanisms of DNA Repair and Carcinogenesis», Equipe Labellisée LIGUE 2016, CNRS UMR 9019, Université Paris-Sud, Gustave Roussy Cancer Campus, Villejuif, France
| | - Dos Sarbassov
- Department of Biology, Nazarbayev University, Nur-Sultan, Kazakhstan
| | - Amangeldy Bissenbaev
- Department of Molecular Biology and Genetics, Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty, Kazakhstan.,Scientific Research Institute of Biology and Biotechnology Problems, Al-Farabi Kazakh National University, Almaty, Kazakhstan
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19
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Bousquet J, Cristol JP, Czarlewski W, Anto JM, Martineau A, Haahtela T, Fonseca SC, Iaccarino G, Blain H, Fiocchi A, Canonica GW, Fonseca JA, Vidal A, Choi HJ, Kim HJ, Le Moing V, Reynes J, Sheikh A, Akdis CA, Zuberbier T. Nrf2-interacting nutrients and COVID-19: time for research to develop adaptation strategies. Clin Transl Allergy 2020; 10:58. [PMID: 33292691 PMCID: PMC7711617 DOI: 10.1186/s13601-020-00362-7] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 11/12/2020] [Indexed: 02/07/2023] Open
Abstract
There are large between- and within-country variations in COVID-19 death rates. Some very low death rate settings such as Eastern Asia, Central Europe, the Balkans and Africa have a common feature of eating large quantities of fermented foods whose intake is associated with the activation of the Nrf2 (Nuclear factor (erythroid-derived 2)-like 2) anti-oxidant transcription factor. There are many Nrf2-interacting nutrients (berberine, curcumin, epigallocatechin gallate, genistein, quercetin, resveratrol, sulforaphane) that all act similarly to reduce insulin resistance, endothelial damage, lung injury and cytokine storm. They also act on the same mechanisms (mTOR: Mammalian target of rapamycin, PPARγ:Peroxisome proliferator-activated receptor, NFκB: Nuclear factor kappa B, ERK: Extracellular signal-regulated kinases and eIF2α:Elongation initiation factor 2α). They may as a result be important in mitigating the severity of COVID-19, acting through the endoplasmic reticulum stress or ACE-Angiotensin-II-AT1R axis (AT1R) pathway. Many Nrf2-interacting nutrients are also interacting with TRPA1 and/or TRPV1. Interestingly, geographical areas with very low COVID-19 mortality are those with the lowest prevalence of obesity (Sub-Saharan Africa and Asia). It is tempting to propose that Nrf2-interacting foods and nutrients can re-balance insulin resistance and have a significant effect on COVID-19 severity. It is therefore possible that the intake of these foods may restore an optimal natural balance for the Nrf2 pathway and may be of interest in the mitigation of COVID-19 severity.
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Affiliation(s)
- Jean Bousquet
- Department of Dermatology and Allergy, Charité, Universitätsmedizin Berlin, Humboldt-Universität Zu Berlin, Berlin Institute of Health, Comprehensive Allergy Center, Berlin, Germany. .,University Hospital Montpellier, 273 avenue d'Occitanie, 34090, Montpellier, France. .,MACVIA-France, Montpellier, France.
| | - Jean-Paul Cristol
- Laboratoire de Biochimie et Hormonologie, PhyMedExp, Université de Montpellier, INSERM, CNRS, CHU, Montpellier, France
| | | | - Josep M Anto
- IMIM (Hospital del Mar Research Institute), Barcelona, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Spain.,CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain.,ISGlobAL, Barcelona, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain
| | - Adrian Martineau
- Institute for Population Health Sciences, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Tari Haahtela
- Skin and Allergy Hospital, Helsinki University Hospital, and University of Helsinki, Helsinki, Finland
| | - Susana C Fonseca
- GreenUPorto - Sustainable Agrifood Production Research Centre, DGAOT, Faculty of Sciences, University of Porto, Campus de Vairão, Vila do Conde, Portugal
| | - Guido Iaccarino
- Department of Advanced Biomedical Sciences, Federico II University, Napoli, Italy
| | - Hubert Blain
- Department of Geriatrics, Montpellier University Hospital, Montpellier, France
| | - Alessandro Fiocchi
- Division of Allergy, Department of Pediatric Medicine, The Bambino Gesu Children's Research Hospital Holy See, Rome, Italy
| | - G Walter Canonica
- Personalized Medicine Asthma and Allergy Clinic-Humanitas University & Research Hospital, IRCCS, Milano, Italy
| | - Joao A Fonseca
- CINTESIS, Center for Research in Health Technology and Information Systems, Faculdade de Medicina da Universidade do Porto; and Medida,, Lda Porto, Porto, Portugal
| | - Alain Vidal
- World Business Council for Sustainable Development (WBCSD) Maison de la Paix, Geneva, Switzerland.,AgroParisTech-Paris Institute of Technology for Life, Food and Environmental Sciences, Paris, France
| | - Hak-Jong Choi
- Microbiology and Functionality Research Group, Research and Development Division, World Institute of Kimchi, Gwangju, Korea
| | - Hyun Ju Kim
- SME Service Department, Strategy and Planning Division, World Institute of Kimchi, Gwangju, Korea
| | | | - Jacques Reynes
- Maladies Infectieuses et Tropicales, CHU, Montpellier, France
| | - Aziz Sheikh
- The Usher Institute of Population Health Sciences and Informatics, The University of Edinburgh, Edinburgh, UK
| | - Cezmi A Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
| | - Torsten Zuberbier
- Department of Dermatology and Allergy, Charité, Universitätsmedizin Berlin, Humboldt-Universität Zu Berlin, Berlin Institute of Health, Comprehensive Allergy Center, Berlin, Germany
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20
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Bonfim NESMT, Baranoski A, Mantovani MS. Cytotoxicity of sodium selenite in HaCaT cells induces cell death and alters the mRNA expression of PUMA, ATR, and mTOR genes. J Trace Elem Med Biol 2020; 62:126605. [PMID: 32634766 DOI: 10.1016/j.jtemb.2020.126605] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 06/18/2020] [Accepted: 06/30/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND By identifying the molecular mechanisms underlying sodium selenite (Na2SeO3) cytotoxicity during exposure in non-tumor cells (HaCaT cells), we will improve the current understanding of its antiproliferative effects and modulation of gene expression in the main pathways related to the cell cycle, cell death, oxidative stress, and DNA damage and repair. METHODS Non-tumor HaCaT cells were treated with Na2SeO3 to induce cytotoxicity, and the effects were investigated using an MTT assay (cell viability), real-time cell analysis (profiling the cell index), flow cytometry (membrane integrity, cell cycle disruption, and apoptosis), a comet assay (genotoxicity, i.e., DNA damage), and RT-qPCR (mRNA expression of genes). RESULTS Treatment with Na2SeO3 was cytotoxic at 10 μM, producing morphological changes in cells (cytoplasmic granulations); however, it did not have a genotoxic effect. Na2SeO3 induced cell membrane damage, cell death, and cell cycle arrest in HaCaT cells. It also altered the mRNA expression levels of PUMA, ATR, and mTOR genes. However, it had no effect on the mRNA expression of caspases or PARP1, BIRC5, BECN1, and c-MYC genes, suggesting that Na2SeO3 causes PUMA-dependent apoptosis in HaCaT cells. The mRNA expression of specific genes related to oxidative stress, DNA damage and repair, and cell cycle control were unchanged by Na2SeO3. CONCLUSIONS We demonstrated the cytotoxic effect of Na2SeO3 in HaCaT cells by analyzing mRNA expression patterns, changes in cell morphology, and proliferation kinetics.
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Affiliation(s)
| | - Adrivanio Baranoski
- Departamento de Biologia Geral, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Mário Sérgio Mantovani
- Departamento de Biologia Geral, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
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Wojnacki J, Nola S, Bun P, Cholley B, Filippini F, Pressé MT, Lipecka J, Man Lam S, N’guyen J, Simon A, Ouslimani A, Shui G, Fader CM, Colombo MI, Guerrera IC, Galli T. Role of VAMP7-Dependent Secretion of Reticulon 3 in Neurite Growth. Cell Rep 2020; 33:108536. [DOI: 10.1016/j.celrep.2020.108536] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Revised: 10/28/2020] [Accepted: 11/25/2020] [Indexed: 11/24/2022] Open
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Rosemary (Rosmarinus officinalis L.) extract inhibits prostate cancer cell proliferation and survival by targeting Akt and mTOR. Biomed Pharmacother 2020; 131:110717. [PMID: 33152908 DOI: 10.1016/j.biopha.2020.110717] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 08/28/2020] [Accepted: 08/30/2020] [Indexed: 12/27/2022] Open
Abstract
Prostate cancer is the most commonly diagnosed type of cancer in North American men and is typically classified as either androgen receptor positive or negative depending on the expression of the androgen receptor (AR). AR positive prostate cancer can be treated with hormone therapy while AR negative prostate cancer is aggressive and does not respond to hormone therapy. It has been previously reported that rosemary extract (RE) has antioxidant, anti-inflammatory and anti-cancer properties. In the present study, we found that treatment of the androgen-insensitive PC-3 prostate cancer cells with RE resulted in a significant inhibition of proliferation, survival, migration, Akt, and mTOR signaling. In addition, treatment of the androgen-sensitive 22RV1 prostate cancer cells with RE resulted in a significant inhibition of proliferation and survival while RE had no effect on normal prostate epithelial PNT1A cells. These findings suggest that RE has potent effects against prostate cancer and warrants further investigation.
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Phase 1 study of mTORC1/2 inhibitor sapanisertib (TAK-228) in advanced solid tumours, with an expansion phase in renal, endometrial or bladder cancer. Br J Cancer 2020; 123:1590-1598. [PMID: 32913286 PMCID: PMC7686313 DOI: 10.1038/s41416-020-01041-x] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 07/17/2020] [Accepted: 08/13/2020] [Indexed: 12/13/2022] Open
Abstract
Background This Phase 1 dose-escalation/expansion study assessed safety/tolerability of sapanisertib, an oral, highly selective inhibitor of mTORC1/mTORC2, in advanced solid tumours. Methods Eligible patients received increasing sapanisertib doses once daily (QD; 31 patients), once weekly (QW; 30 patients), QD for 3 days on/4 days off QW (QD × 3dQW; 33 patients) or QD for 5 days on/2 days off QW (QD × 5dQW; 22 patients). In expansion cohorts, 82 patients with renal cell carcinoma (RCC), endometrial or bladder cancer received sapanisertib 5 mg QD (39 patients), 40 mg QW (26 patients) or 30 mg QW (17 patients). Results Maximum tolerated doses of sapanisertib were 6 mg QD, 40 mg QW, 9 mg QD × 3dQW and 7 mg QD × 5dQW. Frequent dose-limiting toxicities (DLTs) included hyperglycaemia, maculo-papular rash (QD), asthenia and stomatitis (QD × 3dQW/QD × 5dQW); expansion phase doses of 5 mg QD and 30 mg QW were selected based on tolerability beyond the DLT evaluation period. One patient with RCC achieved complete response; nine experienced partial responses (RCC: seven patients; carcinoid tumour/endometrial cancer: one patient each). Sapanisertib pharmacokinetics were time-linear and supported multiple dosing. Pharmacodynamic findings demonstrated treatment-related reductions in TORC1/2 biomarkers. Conclusions Sapanisertib demonstrated a manageable safety profile, with preliminary antitumour activity observed in RCC and endometrial cancer. Clinical trial registration ClinicalTrials.gov, NCT01058707.
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Aydin AM, Chahoud J, Adashek JJ, Azizi M, Magliocco A, Ross JS, Necchi A, Spiess PE. Understanding genomics and the immune environment of penile cancer to improve therapy. Nat Rev Urol 2020; 17:555-570. [DOI: 10.1038/s41585-020-0359-z] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/03/2020] [Indexed: 02/07/2023]
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25
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Ruta LL, Farcasanu IC. Saccharomyces cerevisiae and Caffeine Implications on the Eukaryotic Cell. Nutrients 2020; 12:nu12082440. [PMID: 32823708 PMCID: PMC7468979 DOI: 10.3390/nu12082440] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 08/07/2020] [Accepted: 08/10/2020] [Indexed: 02/07/2023] Open
Abstract
Caffeine-a methylxanthine analogue of the purine bases adenine and guanine-is by far the most consumed neuro-stimulant, being the active principle of widely consumed beverages such as coffee, tea, hot chocolate, and cola. While the best-known action of caffeine is to prevent sleepiness by blocking the adenosine receptors, caffeine exerts a pleiotropic effect on cells, which lead to the activation or inhibition of various cell integrity pathways. The aim of this review is to present the main studies set to investigate the effects of caffeine on cells using the model eukaryotic microorganism Saccharomyces cerevisiae, highlighting the caffeine synergy with external cell stressors, such as irradiation or exposure to various chemical hazards, including cigarette smoke or chemical carcinogens. The review also focuses on the importance of caffeine-related yeast phenotypes used to resolve molecular mechanisms involved in cell signaling through conserved pathways, such as target of rapamycin (TOR) signaling, Pkc1-Mpk1 mitogen activated protein kinase (MAPK) cascade, or Ras/cAMP protein kinase A (PKA) pathway.
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26
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Yurube T, Ito M, Kakiuchi Y, Kuroda R, Kakutani K. Autophagy and mTOR signaling during intervertebral disc aging and degeneration. JOR Spine 2020; 3:e1082. [PMID: 32211593 PMCID: PMC7084057 DOI: 10.1002/jsp2.1082] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 02/03/2020] [Accepted: 02/04/2020] [Indexed: 12/21/2022] Open
Abstract
Degenerative disc disease is a highly prevalent, global health problem that represents the primary cause of back pain and is associated with neurological disorders, including radiculopathy, myelopathy, and paralysis, resulting in worker disability and socioeconomic burdens. The intervertebral disc is the largest avascular organ in the body, and degeneration is suspected to be linked to nutritional deficiencies. Autophagy, the process through which cells self-digest and recycle damaged components, is an important cell survival mechanism under stress conditions, especially nutrient deprivation. Autophagy is negatively controlled by the mammalian target of rapamycin (mTOR) signaling pathway. mTOR is a serine/threonine kinase that detects nutrient availability to trigger the activation of cell growth and protein synthesis pathways. Thus, resident disc cells may utilize autophagy and mTOR signaling to cope with harsh low-nutrient conditions, such as low glucose, low oxygen, and low pH. We performed rabbit and human disc cell and tissue studies to elucidate the involvement and roles played by autophagy and mTOR signaling in the intervertebral disc. In vitro serum and nutrient deprivation studies resulted in decreased disc cell proliferation and metabolic activity and increased apoptosis and senescence, in addition to increased autophagy. The selective RNA interference-mediated and pharmacological inhibition of mTOR complex 1 (mTORC1) was protective against inflammation-induced disc cellular apoptosis, senescence, and extracellular matrix catabolism, through the induction of autophagy and the activation of the Akt-signaling network. Although temsirolimus, a rapamycin derivative with improved water solubility, was the most effective mTORC1 inhibitor tested, dual mTOR inhibitors, capable of blocking multiple mTOR complexes, did not rescue disc cells. In vivo, high levels of mTOR-signaling molecule expression and phosphorylation were observed in human intermediately degenerated discs and decreased with age. A mechanistic understanding of autophagy and mTOR signaling can provide a basis for the development of biological therapies to treat degenerative disc disease.
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Affiliation(s)
- Takashi Yurube
- Department of Orthopaedic SurgeryKobe University Graduate School of MedicineKobeJapan
| | - Masaaki Ito
- Department of Orthopaedic SurgeryKobe University Graduate School of MedicineKobeJapan
| | - Yuji Kakiuchi
- Department of Orthopaedic SurgeryKobe University Graduate School of MedicineKobeJapan
| | - Ryosuke Kuroda
- Department of Orthopaedic SurgeryKobe University Graduate School of MedicineKobeJapan
| | - Kenichiro Kakutani
- Department of Orthopaedic SurgeryKobe University Graduate School of MedicineKobeJapan
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Saenwongsa W, Nithichanon A, Chittaganpitch M, Buayai K, Kewcharoenwong C, Thumrongwilainet B, Butta P, Palaga T, Takahashi Y, Ato M, Lertmemongkolchai G. Metformin-induced suppression of IFN-α via mTORC1 signalling following seasonal vaccination is associated with impaired antibody responses in type 2 diabetes. Sci Rep 2020; 10:3229. [PMID: 32094377 PMCID: PMC7039947 DOI: 10.1038/s41598-020-60213-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 02/07/2020] [Indexed: 12/22/2022] Open
Abstract
Diabetes mellitus (DM) patients are at an increased risk of complications following influenza-virus infection, seasonal vaccination (SV) is recommended. However, SV with trivalent influenza vaccine (TIV) can induce antibody and type-I interferon (IFN) responses, and the effect of anti-DM treatment on these responses is incompletely understood. We evaluated the antibody response and IFN-α expression in individuals with and without type 2 DM (T2DM) following SV, and examined the effects on anti-DM treatment. TIV elicited sero-protection in all groups, but antibody persistency was <8 months, except for the antibody response to B-antigens in non-DM. T2DM impaired the IgG avidity index, and T2DM showed a significantly decreased response against H1N1 and H3N2, in addition to delaying and reducing haemagglutination-inhibition persistency against influenza B-antigens in DM groups treated with metformin (Met-DM) or glibenclamide (GB-DM). Following TIV, the Met-DM and GB-DM groups exhibited reduced IFN-α expression upon stimulation with whole- and split-virion influenza vaccines. Suppression of IFN-α expression in the Met-DM group was associated with a reduction in the mechanistic target of rapamycin complex-1 pathway and impaired IgG avidity index. Thus, single-dose TIV each year might not be suitable for T2DM. Our data could aid the development of an efficacious influenza vaccine for T2DM.
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Affiliation(s)
- Wipawee Saenwongsa
- Centre for Research and Development of Medical Diagnostic Laboratories, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, Thailand.,Disease Prevention and Control Region 10th, Ubonratchathani, Ministry of Public Health, Mueang Nonthaburi, Thailand
| | - Arnone Nithichanon
- Centre for Research and Development of Medical Diagnostic Laboratories, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, Thailand
| | - Malinee Chittaganpitch
- National Influenza Centre, Department of Medical Science, Ministry of Public Health, Mueang Nonthaburi, Thailand
| | - Kampaew Buayai
- National Influenza Centre, Department of Medical Science, Ministry of Public Health, Mueang Nonthaburi, Thailand
| | - Chidchamai Kewcharoenwong
- Centre for Research and Development of Medical Diagnostic Laboratories, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, Thailand
| | | | - Patcharavadee Butta
- Department of Microbiology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Tanapat Palaga
- Department of Microbiology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | | | - Manabu Ato
- National Institute of Infectious Diseases, Tokyo, Japan
| | - Ganjana Lertmemongkolchai
- Centre for Research and Development of Medical Diagnostic Laboratories, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, Thailand.
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Wang J, Yang DH, Yang Y, Wang JQ, Cai CY, Lei ZN, Teng QX, Wu ZX, Zhao L, Chen ZS. Overexpression of ABCB1 Transporter Confers Resistance to mTOR Inhibitor WYE-354 in Cancer Cells. Int J Mol Sci 2020; 21:ijms21041387. [PMID: 32092870 PMCID: PMC7073023 DOI: 10.3390/ijms21041387] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 02/11/2020] [Accepted: 02/12/2020] [Indexed: 12/15/2022] Open
Abstract
The overexpressing ABCB1 transporter is one of the key factors leading to multidrug resistance (MDR). Thus, many ABCB1 inhibitors have been found to be able to overcome ABCB1-mediated MDR. However, some inhibitors also work as a substrate of ABCB1, which indicates that in order to achieve an effective reversal dosage, a higher concentration is needed to overcome the pumped function of ABCB1, which may concurrently increase the toxicity. WYE-354 is an effective and specific mTOR (mammalian target of rapamycin) inhibitor, which recently has been reported to reverse ABCB1-mediated MDR. In the current study, 3-(4,5-dimethylthiazolyl)-2,5-diphenyltetrazolium bromide (MTT) assay was carried out to determine the cell viability and reversal effect of WYE-354 in parental and drug-resistant cells. Drug accumulation was performed to examine the effect of WYE-354 on the cellular accumulation of chemotherapeutic drugs. The ATPase (adenosine triphosphatase) activity of the ABCB1 transporter in the presence or absence of WYE-354 was conducted in order to determine the impact of WYE-354 on ATP hydrolysis. Western blot analysis and immunofluorescence assay were used to investigate the protein molecules related to MDR. In addition, the interaction between the WYE-354 and ABCB1 transporter was investigated via in silico analysis. We demonstrated that WYE-354 is a substrate of ABCB1, that the overexpression of the ABCB1 transporter decreases the efficacy of WYE-354, and that the resistant WYE-354 can be reversed by an ABCB1 inhibitor at a pharmacological achievable concentration. Furthermore, WYE-354 increased the intracellular accumulation of paclitaxel in the ABCB1-mediated MDR cell line, without affecting the corresponding parental cell line, which indicated that WYE-354 could compete with other chemotherapeutic drugs for the ABCB1 transporter substrate binding site. In addition, WYE-354 received a high score in the docking analysis, indicating a strong interaction between WYE-354 and the ABCB1 transporter. The results of the ATPase analysis showed that WYE-354 could stimulate ABCB1 ATPase activity. Treatment with WYE-354 did not affect the protein expression or subcellular localization of the ABCB1. This study provides evidence that WYE-354 is a substrate of the ABCB1 transporter, implicating that WYE-354 should be avoided for use in ABCB1-mediated MDR cancer.
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Affiliation(s)
- Jingqiu Wang
- Department of Pharmacy, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210000, China;
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (D.-H.Y.); (Y.Y.); (J.-Q.W.); (C.-Y.C.); (Z.-N.L.); (Q.-X.T.); (Z.-X.W.)
| | - Dong-Hua Yang
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (D.-H.Y.); (Y.Y.); (J.-Q.W.); (C.-Y.C.); (Z.-N.L.); (Q.-X.T.); (Z.-X.W.)
| | - Yuqi Yang
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (D.-H.Y.); (Y.Y.); (J.-Q.W.); (C.-Y.C.); (Z.-N.L.); (Q.-X.T.); (Z.-X.W.)
| | - Jing-Quan Wang
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (D.-H.Y.); (Y.Y.); (J.-Q.W.); (C.-Y.C.); (Z.-N.L.); (Q.-X.T.); (Z.-X.W.)
| | - Chao-Yun Cai
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (D.-H.Y.); (Y.Y.); (J.-Q.W.); (C.-Y.C.); (Z.-N.L.); (Q.-X.T.); (Z.-X.W.)
| | - Zi-Ning Lei
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (D.-H.Y.); (Y.Y.); (J.-Q.W.); (C.-Y.C.); (Z.-N.L.); (Q.-X.T.); (Z.-X.W.)
| | - Qiu-Xu Teng
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (D.-H.Y.); (Y.Y.); (J.-Q.W.); (C.-Y.C.); (Z.-N.L.); (Q.-X.T.); (Z.-X.W.)
| | - Zhuo-Xun Wu
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (D.-H.Y.); (Y.Y.); (J.-Q.W.); (C.-Y.C.); (Z.-N.L.); (Q.-X.T.); (Z.-X.W.)
| | - Linguo Zhao
- Department of Pharmacy, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210000, China;
- Correspondence: (L.Z.); (Z.-S.C.)
| | - Zhe-Sheng Chen
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Queens, NY 11439, USA; (D.-H.Y.); (Y.Y.); (J.-Q.W.); (C.-Y.C.); (Z.-N.L.); (Q.-X.T.); (Z.-X.W.)
- Correspondence: (L.Z.); (Z.-S.C.)
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Cui WQ, Wang ST, Pan D, Chang B, Sang LX. Caffeine and its main targets of colorectal cancer. World J Gastrointest Oncol 2020; 12:149-172. [PMID: 32104547 PMCID: PMC7031145 DOI: 10.4251/wjgo.v12.i2.149] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 10/25/2019] [Accepted: 11/13/2019] [Indexed: 02/05/2023] Open
Abstract
Caffeine is a purine alkaloid and is widely consumed in coffee, soda, tea, chocolate and energy drinks. To date, a growing number of studies have indicated that caffeine is associated with many diseases including colorectal cancer. Caffeine exerts its biological activity through binding to adenosine receptors, inhibiting phosphodiesterases, sensitizing calcium channels, antagonizing gamma-aminobutyric acid receptors and stimulating adrenal hormones. Some studies have indicated that caffeine can interact with signaling pathways such as transforming growth factor β, phosphoinositide-3-kinase/AKT/mammalian target of rapamycin and mitogen-activated protein kinase pathways through which caffeine can play an important role in colorectal cancer pathogenesis, metastasis and prognosis. Moreover, caffeine can act as a general antioxidant that protects cells from oxidative stress and also as a regulatory factor of the cell cycle that modulates the DNA repair system. Additionally, as for intestinal homeostasis, through the interaction with receptors and cytokines, caffeine can modulate the immune system mediating its effects on T lymphocytes, B lymphocytes, natural killer cells and macrophages. Furthermore, caffeine can not only directly inhibit species in the gut microbiome, such as Escherichia coli and Candida albicans but also can indirectly exert inhibition by increasing the effects of other antimicrobial drugs. This review summarizes the association between colorectal cancer and caffeine that is being currently studied.
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Affiliation(s)
- Wen-Qi Cui
- Department of Neurology, Shengjing Hospital, Affiliated Hospital of China Medical University, Shenyang 110004, Liaoning Province, China
- China Medical University 101K class 87, Shenyang 110001, Liaoning Province, China
| | - Shi-Tong Wang
- Department of Cardiovascular Ultrasound, First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning Province, China
- China Medical University 101K class 87, Shenyang 110001, Liaoning Province, China
| | - Dan Pan
- Department of Geriatrics, First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning Province, China
| | - Bing Chang
- Department of Gastroenterology, First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning Province, China
| | - Li-Xuan Sang
- Department of Geriatrics, First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning Province, China
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Hong KB, Lee HS, Hong JS, Kim DH, Moon JM, Park Y. Effects of tannase-converted green tea extract on skeletal muscle development. BMC Complement Med Ther 2020; 20:47. [PMID: 32046706 PMCID: PMC7076851 DOI: 10.1186/s12906-020-2827-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 01/23/2020] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND The aim of this study was to investigate the effect of tannase-converted green tea extract with a high (-)-epicatechin (EC), (-)-epigallocatechin (EGC), and gallic acid (GA) content on myotube density and fusion in normal and oxidative stress-induced C2C12 skeletal muscle cells. Although the use of green tea extract is considered beneficial, cellular and molecular mechanisms of action of tannase-converted green tea extracts that are used as potential muscle growth materials have not been thoroughly studied. METHODS This study used histological analysis and molecular biology techniques, and compared the results with those for AMPK activator 5-aminoimidazole-4-carboxamide-1-β-D-ribonucleoside (AICAR) and green tea extracts. RESULTS The myotube density of normal and oxidative stress-induced C2C12 cells was significantly higher in the tannase-converted green tea extract-treated group than that observed in the other groups (normal cells: P < 0.01; oxidative stress-induced cells: P < 0.05). In addition, tannase-converted green tea extract and green tea extract treatments significantly upregulated the genetic expression of myogenin, Myf5, and MyoD (P < 0.05). The levels of AMP-activated protein kinase-α (AMPKα) and muscle RING-finger protein-1 (MuRF-1) in the tannase-converted green tea extract group were higher than those in the AICAR and green tea extract groups (P < 0.05). CONCLUSIONS Taken together, our findings describe that the high levels of EC, EGC, and GA in the tannase-converted green tea extract are attributable to the morphological changes in C2C12 cells and intercellular signaling pathways. Therefore, tannase-converted green tea extract can be used in the treatment of sarcopenia.
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Affiliation(s)
- Ki-Bae Hong
- BK21 Plus, College of Health Science, Korea University, Seoul, 02841, Republic of Korea
| | - Hee-Seok Lee
- Department of Food Science and Technology, Chung-Ang University, Anseong, 17546, Republic of Korea
| | - Jeong Sup Hong
- Animal Center and Preclinical Evaluation Research Institute, Yonam College, Cheonan, 31005, Republic of Korea
| | - Dong Hyeon Kim
- BTC Corporation, #703, Technology Development Center, 705 Haean-ro, Sangnok-gu, Ansan-si, Gyeonggi-do, Republic of Korea
| | - Joo Myung Moon
- BTC Corporation, #703, Technology Development Center, 705 Haean-ro, Sangnok-gu, Ansan-si, Gyeonggi-do, Republic of Korea
| | - Yooheon Park
- Department of Food Science and Biotechnology, Dongguk University, Goyang, 10326, Republic of Korea.
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Rapamycin inhibits B-cell activating factor (BAFF)-stimulated cell proliferation and survival by suppressing Ca 2+-CaMKII-dependent PTEN/Akt-Erk1/2 signaling pathway in normal and neoplastic B-lymphoid cells. Cell Calcium 2020; 87:102171. [PMID: 32062191 DOI: 10.1016/j.ceca.2020.102171] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 02/06/2020] [Accepted: 02/06/2020] [Indexed: 01/21/2023]
Abstract
B-cell activating factor (BAFF) is a crucial survival factor for B cells, and excess BAFF contributes to development of autoimmune diseases. Recent studies have shown that rapamycin can prevent BAFF-induced B-cell proliferation and survival, but the underlying mechanism remains to be elucidated. Here we found that rapamycin inhibited human soluble BAFF (hsBAFF)-stimulated cell proliferation by inducing G1-cell cycle arrest, which was through downregulating the protein levels of CDK2, CDK4, CDK6, cyclin A, cyclin D1, and cyclin E. Rapamycin reduced hsBAFF-stimulated cell survival by downregulating the levels of anti-apoptotic proteins (Mcl-1, Bcl-2, Bcl-xL and survivin) and meanwhile upregulating the levels of pro-apoptotic proteins (BAK and BAX). The cytostatic and cytotoxic effects of rapamycin linked to its attenuation of hsBAFF-elevated intracellular free Ca2+ ([Ca2+]i). In addition, rapamycin blocked hsBAFF-stimulated B-cell proliferation and survival by preventing hsBAFF from inactivating PTEN and activating the Akt-Erk1/2 pathway. Overexpression of wild type PTEN or ectopic expression of dominant negative Akt potentiated rapamycin's suppression of hsBAFF-induced Erk1/2 activation and proliferation/viability in Raji cells. Interestingly, PP242 (mTORC1/2 inhibitor) or Akt inhibitor X, like rapamycin (mTORC1 inhibitor), reduced the basal or hsBAFF-induced [Ca2+]i elevations. Chelating [Ca2+]i with BAPTA/AM, preventing [Ca2+]i elevation using EGTA, 2-APB or verapamil, inhibiting CaMKII with KN93, or silencing CaMKII strengthened rapamycin's inhibitory effects. The results indicate that rapamycin inhibits BAFF-stimulated B-cell proliferation and survival by blunting mTORC1/2-mediated [Ca2+]i elevations and suppressing Ca2+-CaMKII-dependent PTEN/Akt-Erk1/2 signaling pathway. Our finding underscores that rapamycin may be exploited for prevention of excessive BAFF-induced aggressive B-cell malignancies and autoimmune diseases.
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Rosemary Extract Inhibits Proliferation, Survival, Akt, and mTOR Signaling in Triple-Negative Breast Cancer Cells. Int J Mol Sci 2020; 21:ijms21030810. [PMID: 32012648 PMCID: PMC7037743 DOI: 10.3390/ijms21030810] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 01/22/2020] [Accepted: 01/23/2020] [Indexed: 02/08/2023] Open
Abstract
Breast cancer is the most commonly diagnosed cancer in women. Triple-negative (TN) breast cancer lacks expression of estrogen receptor (ER), progesterone receptor (PR) as well as the expression and/or gene amplification of human epidermal growth factor receptor 2 (HER2). TN breast cancer is aggressive and does not respond to hormone therapy, therefore new treatments are urgently needed. Plant-derived chemicals have contributed to the establishment of chemotherapy agents. In previous studies, rosemary extract (RE) has been found to reduce cell proliferation and increase apoptosis in some cancer cell lines. However, there are very few studies examining the effects of RE in TN breast cancer. In the present study, we examined the effects of RE on TN MDA-MB-231 breast cancer cell proliferation, survival/apoptosis, Akt, and mTOR signaling. RE inhibited MDA-MB-231 cell proliferation and survival in a dose-dependent manner. Furthermore, RE inhibited the phosphorylation/activation of Akt and mTOR and enhanced the cleavage of PARP, a marker of apoptosis. Our findings indicate that RE has potent anticancer properties against TN breast cancer and modulates key signaling molecules involved in cell proliferation and survival.
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Burnett BA, Womeldorff MR, Jensen R. Meningioma: Signaling pathways and tumor growth. HANDBOOK OF CLINICAL NEUROLOGY 2020; 169:137-150. [PMID: 32553285 DOI: 10.1016/b978-0-12-804280-9.00009-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Meningiomas are the most common primary intracranial brain tumor in adult humans; however, our understanding of meningioma tumorigenesis is relatively limited in comparison with the body of research available for other intracranial tumors such as gliomas. Here we briefly describe the current understanding of aberrant signaling pathways and tumor growth mechanisms responsible for meningioma differentiation, cellular growth, development, inhibition, and death. Numerous cellular functions impacted by these signaling pathways are critical for angiogenesis, proliferation, and apoptosis. Ultimately, a further understanding of the signaling pathways involved in meningioma tumorigenesis will lead to better treatment modalities in the future.
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Affiliation(s)
- Brian Andrew Burnett
- Department of Neurosurgery, University of Utah, Salt Lake City, UT, United States
| | | | - Randy Jensen
- Department of Neurosurgery, University of Utah, Salt Lake City, UT, United States.
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Old wine in new bottles: Drug repurposing in oncology. Eur J Pharmacol 2020; 866:172784. [DOI: 10.1016/j.ejphar.2019.172784] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 11/05/2019] [Accepted: 11/07/2019] [Indexed: 02/07/2023]
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Dharanipragada P, Parekh N. Genome-wide characterization of copy number variations in diffuse large B-cell lymphoma with implications in targeted therapy. PRECISION CLINICAL MEDICINE 2019; 2:246-258. [PMID: 35693879 PMCID: PMC8985800 DOI: 10.1093/pcmedi/pbz024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 11/12/2019] [Accepted: 11/17/2019] [Indexed: 12/12/2022] Open
Abstract
Diffuse large B-cell lymphoma (DLBCL) is the aggressive form of haematological malignancies with relapse/refractory in ~ 40% of cases. It mostly develops due to accumulation of various genetic and epigenetic variations that contribute to its aggressiveness. Though large-scale structural alterations have been reported in DLBCL, their functional role in pathogenesis and as potential targets for therapy is not yet well understood. In this study we performed detection and analysis of copy number variations (CNVs) in 11 human DLBCL cell lines (4 activated B-cell–like [ABC] and 7 germinal-centre B-cell–like [GCB]), that serve as model systems for DLBCL cancer cell biology. Significant heterogeneity observed in CNV profiles of these cell lines and poor prognosis associated with ABC subtype indicates the importance of individualized screening for diagnostic and prognostic targets. Functional analysis of key cancer genes exhibiting copy alterations across the cell lines revealed activation/disruption of ten potentially targetable immuno-oncogenic pathways. Genome guided in silico therapy that putatively target these pathways is elucidated. Based on our analysis, five CNV-genes associated with worst survival prognosis are proposed as potential prognostic markers of DLBCL.
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Affiliation(s)
- Prashanthi Dharanipragada
- Centre for Computational Natural Sciences and Bioinformatics, International Institute of Information Technology, Hyderabad, Telangana 500 032, India
| | - Nita Parekh
- Centre for Computational Natural Sciences and Bioinformatics, International Institute of Information Technology, Hyderabad, Telangana 500 032, India
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mTORC1/AMPK responses define a core gene set for developmental cell fate switching. BMC Biol 2019; 17:58. [PMID: 31319820 PMCID: PMC6637605 DOI: 10.1186/s12915-019-0673-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 06/06/2019] [Indexed: 12/12/2022] Open
Abstract
Background Kinases mTORC1 and AMPK act as energy sensors, controlling nutrient responses and cellular growth. Changes in nutrient levels affect diverse transcriptional networks, making it challenging to identify downstream paths that regulate cellular growth or a switch to development via nutrient variation. The life cycle of Dictyostelium presents an excellent model to study the mTORC1 signaling function for growth and development. Dictyostelium grow as single cells in nutrient-rich media, but, upon nutrient withdrawal, growth ceases and cells enter a program for multi-cell development. While nearly half the genome shows gene expression changes upon nutrient removal, we hypothesized that not all of these genes are required for the switch to program development. Through manipulation of mTORC1 activity alone, without nutrient removal, we focused on a core network of genes that are required for switching between growth and development for regulation of cell fate decisions. Results To identify developmentally essential genes, we sought ways to promote development in the absence of nutrient loss. We first examined the activities of mTORC1 and AMPK in Dictyostelium during phases of rapid growth and starvation-induced development and showed they exhibited reciprocal patterns of regulation under various conditions. Using these as initial readouts, we identified rich media conditions that promoted rapid cell growth but, upon mTORC1 inactivation by rapamycin, led to a growth/development switch. Examination of gene expression during cell fate switching showed that changes in expression of most starvation-regulated genes were not required for developmental induction. Approximately 1000 genes which become downregulated upon rapamycin treatment comprise a cellular growth network involving ribosome biogenesis, protein synthesis, and cell cycle processes. Conversely, the upregulation of ~ 500 genes by rapamycin treatment defines essential signaling pathways for developmental induction, and ~ 135 of their protein products intersect through the well-defined cAMP/PKA network. Many of the rapamycin-induced genes we found are currently unclassified, and mutation analyses of 5 such genes suggest a novel gene class essential for developmental regulation. Conclusions We show that manipulating activities of mTORC1/AMPK in the absence of nutrient withdrawal is sufficient for a growth-to-developmental fate switch in Dictyostelium, providing a means to identify transcriptional networks and signaling pathways essential for early development. Electronic supplementary material The online version of this article (10.1186/s12915-019-0673-1) contains supplementary material, which is available to authorized users.
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Kakiuchi Y, Yurube T, Kakutani K, Takada T, Ito M, Takeoka Y, Kanda Y, Miyazaki S, Kuroda R, Nishida K. Pharmacological inhibition of mTORC1 but not mTORC2 protects against human disc cellular apoptosis, senescence, and extracellular matrix catabolism through Akt and autophagy induction. Osteoarthritis Cartilage 2019; 27:965-976. [PMID: 30716534 DOI: 10.1016/j.joca.2019.01.009] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Revised: 01/15/2019] [Accepted: 01/25/2019] [Indexed: 02/07/2023]
Abstract
OBJECTIVE The mammalian target of rapamycin (mTOR) is a serine/threonine kinase that integrates nutrients to execute cell growth. We hypothesized that mTOR is influential in the intervertebral disc-largest avascular, low-nutrient organ. Our objective was to identify the optimal mTOR inhibitor for treating human degenerative disc disease. DESIGN mTOR complex 1 (mTORC1) regulates p70/ribosomal S6 kinase (p70/S6K), negatively regulates autophagy, and is controlled by Akt. Akt is controlled by phosphatidylinositol 3-kinase (PI3K) and mTOR complex 2 (mTORC2). mTORC1 inhibitors-rapamycin, temsirolimus, everolimus, and curcumin, mTORC1&mTORC2 inhibitor-INK-128, PI3K&mTOR inhibitor-NVP-BEZ235, and Akt inhibitor-MK-2206-were applied to human disc nucleus pulposus (NP) cells. mTOR signaling, autophagy, apoptosis, senescence, and matrix metabolism were evaluated. RESULTS mTORC1 inhibitors decreased p70/S6K but increased Akt phosphorylation, promoted autophagy with light chain 3 (LC3)-II increases and p62/sequestosome 1 (p62/SQSTM1) decreases, and suppressed pro-inflammatory interleukin-1 beta (IL-1β)-induced apoptotic terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) positivity (versus rapamycin, 95% confidence interval (CI) -0.431 to -0.194; temsirolimus, 95% CI -0.529 to -0.292; everolimus, 95% CI -0.477 to -0.241; curcumin, 95% CI -0.248 to -0.011) and poly (ADP-ribose) polymerase (PARP) and caspase-9 cleavage, senescent senescence-associated beta-galactosidase (SA-β-gal) positivity (versus rapamycin, 95% CI -0.437 to -0.230; temsirolimus, 95% CI -0.534 to -0.327; everolimus, 95% CI -0.485 to -0.278; curcumin, 95% CI -0.210 to -0.003) and p16/INK4A expression, and catabolic matrix metalloproteinase (MMP) release and activation. Meanwhile, dual mTOR inhibitors decreased p70/S6K and Akt phosphorylation without enhanced autophagy and suppressed apoptosis, senescence, and matrix catabolism. MK-2206 counteracted protective effects of temsirolimus. Additional disc-tissue analysis found relevance of mTOR signaling to degeneration grades. CONCLUSION mTORC1 inhibitors-notably temsirolimus with an improved water solubility-but not dual mTOR inhibitors protect against inflammation-induced apoptosis, senescence, and matrix catabolism in human disc cells, which depends on Akt and autophagy induction.
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Affiliation(s)
- Y Kakiuchi
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan.
| | - T Yurube
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan.
| | - K Kakutani
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan.
| | - T Takada
- Department of Orthopaedic Surgery, Kenshinkai Kobe Hokuto Hospital, 37-3 Yamada-cho Shimotanigami Aza Umekidani, Kita-ku, Kobe 651-1243, Japan.
| | - M Ito
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan.
| | - Y Takeoka
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan.
| | - Y Kanda
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan.
| | - S Miyazaki
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan.
| | - R Kuroda
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan.
| | - K Nishida
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan.
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de la Cruz López KG, Toledo Guzmán ME, Sánchez EO, García Carrancá A. mTORC1 as a Regulator of Mitochondrial Functions and a Therapeutic Target in Cancer. Front Oncol 2019; 9:1373. [PMID: 31921637 PMCID: PMC6923780 DOI: 10.3389/fonc.2019.01373] [Citation(s) in RCA: 108] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Accepted: 11/21/2019] [Indexed: 02/05/2023] Open
Abstract
Continuous proliferation of tumor cells requires constant adaptations of energy metabolism to rapidly fuel cell growth and division. This energetic adaptation often comprises deregulated glucose uptake and lactate production in the presence of oxygen, a process known as the "Warburg effect." For many years it was thought that the Warburg effect was a result of mitochondrial damage, however, unlike this proposal tumor cell mitochondria maintain their functionality, and is essential for integrating a variety of signals and adapting the metabolic activity of the tumor cell. The mammalian/mechanistic target of rapamycin complex 1 (mTORC1) is a master regulator of numerous cellular processes implicated in proliferation, metabolism, and cell growth. mTORC1 controls cellular metabolism mainly by regulating the translation and transcription of metabolic genes, such as peroxisome proliferator activated receptor γ coactivator-1 α (PGC-1α), sterol regulatory element-binding protein 1/2 (SREBP1/2), and hypoxia inducible factor-1 α (HIF-1α). Interestingly it has been shown that mTORC1 regulates mitochondrial metabolism, thus representing an important regulator in mitochondrial function. Here we present an overview on the role of mTORC1 in the regulation of mitochondrial functions in cancer, considering new evidences showing that mTORC1 regulates the translation of nucleus-encoded mitochondrial mRNAs that result in an increased ATP mitochondrial production. Moreover, we discuss the relationship between mTORC1 and glutaminolysis, as well as mitochondrial metabolites. In addition, mitochondrial fission processes regulated by mTORC1 and its impact on cancer are discussed. Finally, we also review the therapeutic efficacy of mTORC1 inhibitors in cancer treatments, considering its use in combination with other drugs, with particular focus on cellular metabolism inhibitors, that could help improve their anti neoplastic effect and eliminate cancer cells in patients.
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Affiliation(s)
- Karen Griselda de la Cruz López
- Posgrado en Ciencias Biomédicas, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | | | | | - Alejandro García Carrancá
- Unidad de Investigación Biomédica en Cáncer, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México & Instituto Nacional de Cancerología, Secretaría de Salud, Mexico City, Mexico
- *Correspondence: Alejandro García Carrancá
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Drosophila larvae fed palm fruit juice (PFJ) delay pupation via expression regulation of hormetic stress response genes linked to ageing and longevity. Exp Gerontol 2018; 106:198-221. [DOI: 10.1016/j.exger.2018.03.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 03/07/2018] [Accepted: 03/11/2018] [Indexed: 02/06/2023]
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Saso W, Tsukuda S, Ohashi H, Fukano K, Morishita R, Matsunaga S, Ohki M, Ryo A, Park SY, Suzuki R, Aizaki H, Muramatsu M, Sureau C, Wakita T, Matano T, Watashi K. A new strategy to identify hepatitis B virus entry inhibitors by AlphaScreen technology targeting the envelope-receptor interaction. Biochem Biophys Res Commun 2018; 501:374-379. [PMID: 29730285 DOI: 10.1016/j.bbrc.2018.04.187] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 04/24/2018] [Indexed: 12/12/2022]
Abstract
Current anti-hepatitis B virus (HBV) agents have limited effect in curing HBV infection, and thus novel anti-HBV agents with different modes of action are in demand. In this study, we applied AlphaScreen assay to high-throughput screening of small molecules inhibiting the interaction between HBV large surface antigen (LHBs) and the HBV entry receptor, sodium taurocholate cotransporting polypeptide (NTCP). From the chemical screening, we identified that rapamycin, an immunosuppressant, strongly inhibited the LHBs-NTCP interaction. Rapamycin inhibited hepatocyte infection with HBV without significant cytotoxicity. This activity was due to impaired attachment of the LHBs preS1 domain to cell surface. Pretreatment of target cells with rapamycin remarkably reduced their susceptibility to preS1 attachment, while rapamycin pretreatment to preS1 did not affect its attachment activity, suggesting that rapamycin targets the host side. In support of this, a surface plasmon resonance analysis showed a direct interaction of rapamycin with NTCP. Consistently, rapamycin also prevented hepatitis D virus infection, whose entry into cells is also mediated by NTCP. We also identified two rapamycin derivatives, everolimus and temsirolimus, which possessed higher anti-HBV potencies than rapamycin. Thus, this is the first report for application of AlphaScreen technology that monitors a viral envelope-receptor interaction to identify viral entry inhibitors.
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Affiliation(s)
- Wakana Saso
- Department of Virology II, National Institute of Infectious Diseases, Tokyo, Japan; AIDS Research Center, National Institute of Infectious Diseases, Tokyo, Japan; The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Senko Tsukuda
- Department of Virology II, National Institute of Infectious Diseases, Tokyo, Japan; Liver Cancer Prevention Research Unit, RIKEN Center for Integrative Medical Sciences (IMS), Wako, Japan
| | - Hirofumi Ohashi
- Department of Virology II, National Institute of Infectious Diseases, Tokyo, Japan; Department of Applied Biological Sciences, Tokyo University of Science, Noda, Japan
| | - Kento Fukano
- Department of Virology II, National Institute of Infectious Diseases, Tokyo, Japan; Department of Analytical Biochemistry, Meiji Pharmaceutical University, Kiyose, Japan
| | | | - Satoko Matsunaga
- Department of Microbiology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Mio Ohki
- Drug Design Laboratory, Graduate School of Medical Life Science, Yokohama City University, Yokohama, Japan
| | - Akihide Ryo
- Department of Microbiology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Sam-Yong Park
- Drug Design Laboratory, Graduate School of Medical Life Science, Yokohama City University, Yokohama, Japan
| | - Ryosuke Suzuki
- Department of Virology II, National Institute of Infectious Diseases, Tokyo, Japan
| | - Hideki Aizaki
- Department of Virology II, National Institute of Infectious Diseases, Tokyo, Japan
| | - Masamichi Muramatsu
- Department of Virology II, National Institute of Infectious Diseases, Tokyo, Japan
| | - Camille Sureau
- Laboratoire de Virologie Moléculaire, Institut National de la Transfusion Sanguine, INSERM U1134, Paris, France
| | - Takaji Wakita
- Department of Virology II, National Institute of Infectious Diseases, Tokyo, Japan
| | - Tetsuro Matano
- AIDS Research Center, National Institute of Infectious Diseases, Tokyo, Japan; The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Koichi Watashi
- Department of Virology II, National Institute of Infectious Diseases, Tokyo, Japan; Department of Applied Biological Sciences, Tokyo University of Science, Noda, Japan; CREST, JST, Saitama, Japan.
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42
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Assad DX, Borges GA, Avelino SR, Guerra ENS. Additive cytotoxic effects of radiation and mTOR inhibitors in a cervical cancer cell line. Pathol Res Pract 2018; 214:259-262. [DOI: 10.1016/j.prp.2017.10.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 10/17/2017] [Accepted: 10/17/2017] [Indexed: 02/03/2023]
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Thiyagarajan V, Lee KW, Leong MK, Weng CF. Potential natural mTOR inhibitors screened by in silico approach and suppress hepatic stellate cells activation. J Biomol Struct Dyn 2017; 36:4220-4234. [DOI: 10.1080/07391102.2017.1411295] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Varadharajan Thiyagarajan
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Shoufeng, Hualien, 97401, Taiwan
| | - Kuan-Wei Lee
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Shoufeng, Hualien, 97401, Taiwan
| | - Max K. Leong
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Shoufeng, Hualien, 97401, Taiwan
- Department of Chemistry, National Dong Hwa University, Shoufeng, Hualien, 97401, Taiwan
| | - Ching-Feng Weng
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Shoufeng, Hualien, 97401, Taiwan
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Zhang B, Cui Y, Wang L, Zhao L, Hou C, Zeng Q, Zhang Z, Yu J, Zhao Y, Nie J, Chen X, Wang A, Liu H. Autophagy regulates high concentrations of iodide-induced apoptosis in SH-SY5Y cells. Toxicol Lett 2017; 284:129-135. [PMID: 29241733 DOI: 10.1016/j.toxlet.2017.12.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 12/07/2017] [Accepted: 12/09/2017] [Indexed: 01/23/2023]
Abstract
To date, there are many people residing in areas with high levels of iodide in water. Our previous epidemiological study showed that exposure to high iodine in drinking water significantly reduced the intelligence of children although the mechanisms remain unclear. To explore whether high concentrations of iodide may cause cytotoxic effect and the role of autophagy in the high iodide-induced apoptosis, human neuroblastoma cells (SH-SY5Y cells) were exposed to high concentrations of iodide. Morphological phenotypes, cell viability, Hoechst 33258 staining, the expression levels of apoptosis and autophagy-related proteins were detected. A possible effect of an inhibitor (3-methyladenine, 3-MA) or an inducer (rapamycin) of autophagy on high iodide-induced apoptosis also was examined. Results indicated that high iodide changed cellular morphology, decreased cell viability and increased the protein's expression level of apoptosis and autophagy. In addition, high iodide-induced apoptosis was enhanced by inhibition of autophagy and inhibited by activation of autophagy in SH-SY5Y cells. Collectively, high concentrations of iodide are toxic to SH-SY5Y cells, as well as induce apoptosis and autophagy. Furthermore, autophagy plays a regulatory role in high concentrations of iodide-induced apoptosis in SH-SY5Y cells.
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Affiliation(s)
- Bin Zhang
- School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, People's Republic of China
| | - Yushan Cui
- Tianjin Centers for Disease Control and Prevention, 6 Huayue Road, Hedong District, Tianjin 300011, People's Republic of China
| | - Lingzhi Wang
- Department of Quality Control, The First Affiliated Hospital of Zhejiang University, School of Medcine, Hangzhou, Zhejiang, People's Republic of China
| | - Liang Zhao
- Tianjin Centers for Disease Control and Prevention, 6 Huayue Road, Hedong District, Tianjin 300011, People's Republic of China
| | - Changchun Hou
- Tianjin Centers for Disease Control and Prevention, 6 Huayue Road, Hedong District, Tianjin 300011, People's Republic of China
| | - Qiang Zeng
- Tianjin Centers for Disease Control and Prevention, 6 Huayue Road, Hedong District, Tianjin 300011, People's Republic of China
| | - Zushan Zhang
- School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, People's Republic of China
| | - Jingwen Yu
- School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, People's Republic of China
| | - Yang Zhao
- School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, People's Republic of China
| | - Junyan Nie
- School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, People's Republic of China
| | - Xuemin Chen
- Department of Environmental Health and MOE Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Hubei, Wuhan 430030, People's Republic of China
| | - Aiguo Wang
- Department of Environmental Health and MOE Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Hubei, Wuhan 430030, People's Republic of China.
| | - Hongliang Liu
- School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, People's Republic of China; Tianjin Centers for Disease Control and Prevention, 6 Huayue Road, Hedong District, Tianjin 300011, People's Republic of China; Tianjin Municipal Inspection Bureau for Health And Family Planning, 94 Guizhou Road, Heping District, Tianjin 300070, People's Republic of China.
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Costa C, Tsatsakis A, Mamoulakis C, Teodoro M, Briguglio G, Caruso E, Tsoukalas D, Margina D, Dardiotis E, Kouretas D, Fenga C. Current evidence on the effect of dietary polyphenols intake on chronic diseases. Food Chem Toxicol 2017; 110:286-299. [DOI: 10.1016/j.fct.2017.10.023] [Citation(s) in RCA: 155] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 10/12/2017] [Accepted: 10/13/2017] [Indexed: 02/07/2023]
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Mehta RI, Tsymbalyuk N, Ivanova S, Stokum JA, Woo K, Gerzanich V, Simard JM. α-Endosulfine (ARPP-19e) Expression in a Rat Model of Stroke. J Neuropathol Exp Neurol 2017; 76:898-907. [PMID: 28922851 DOI: 10.1093/jnen/nlx074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
In nutrient restricted environments, the yeast endosulfines Igo1/2 are activated via TORC1 inhibition and function critically to initiate and coordinate the cellular stress response that promotes survival. We examined expression of αEnsa, the mammalian homolog of yeast endosulfines, in rat stroke. Prominent neuronal upregulation of αEnsa was identified in 3 patterns within the ischemic gradient: (1) neurons in GFAP-/HSF1+ cortex showed upregulation and near-complete nuclear translocation of αEnsa protein within hours of ischemic onset; (2) neurons in GFAP+/HSF1+ cortex showed upregulation in cytoplasm and nuclei that persisted for days; (3) neurons in GFAP+/HSF1- cortex showed delayed cytosolic-only upregulation that persisted for days. Findings were corroborated using in situ hybridization for ENSA mRNA. Rapamycin treatment was found to reduce infarct size and behavioral deficits and, in GFAP+/HSF1+ zones, enhance αEnsa neuronal nuclear translocation and mitigate cell death, relative to controls. Based on the conservation of TOR signaling across species, and on the finding that the Rim15-Igo1/2-PP2A module is triggered by substrate deprivation in eukaryotic yeast, we speculate that αEnsa is activated by substrate deprivation, functioning through the homologous MASTL-αEnsa/ARPP19-PP2A module to promote neuronal survival. In conjunction with recent studies suggesting a neuroprotective role, our data highlight a potential function for αEnsa within ischemic brain.
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Affiliation(s)
- Rupal I Mehta
- Department of Pathology and Laboratory Medicine; Center for Neurotherapeutics Discovery, Department of Neuroscience; Center for Translational Neuromedicine, University of Rochester, Rochester, New York; Department of Pathology; Department of Neurosurgery; Department of Physiology, University of Maryland School of Medicine, Baltimore, Maryland
| | - Natalia Tsymbalyuk
- Department of Pathology and Laboratory Medicine; Center for Neurotherapeutics Discovery, Department of Neuroscience; Center for Translational Neuromedicine, University of Rochester, Rochester, New York; Department of Pathology; Department of Neurosurgery; Department of Physiology, University of Maryland School of Medicine, Baltimore, Maryland
| | - Svetlana Ivanova
- Department of Pathology and Laboratory Medicine; Center for Neurotherapeutics Discovery, Department of Neuroscience; Center for Translational Neuromedicine, University of Rochester, Rochester, New York; Department of Pathology; Department of Neurosurgery; Department of Physiology, University of Maryland School of Medicine, Baltimore, Maryland
| | - Jesse A Stokum
- Department of Pathology and Laboratory Medicine; Center for Neurotherapeutics Discovery, Department of Neuroscience; Center for Translational Neuromedicine, University of Rochester, Rochester, New York; Department of Pathology; Department of Neurosurgery; Department of Physiology, University of Maryland School of Medicine, Baltimore, Maryland
| | - Kyoon Woo
- Department of Pathology and Laboratory Medicine; Center for Neurotherapeutics Discovery, Department of Neuroscience; Center for Translational Neuromedicine, University of Rochester, Rochester, New York; Department of Pathology; Department of Neurosurgery; Department of Physiology, University of Maryland School of Medicine, Baltimore, Maryland
| | - Volodymyr Gerzanich
- Department of Pathology and Laboratory Medicine; Center for Neurotherapeutics Discovery, Department of Neuroscience; Center for Translational Neuromedicine, University of Rochester, Rochester, New York; Department of Pathology; Department of Neurosurgery; Department of Physiology, University of Maryland School of Medicine, Baltimore, Maryland
| | - J M Simard
- Department of Pathology and Laboratory Medicine; Center for Neurotherapeutics Discovery, Department of Neuroscience; Center for Translational Neuromedicine, University of Rochester, Rochester, New York; Department of Pathology; Department of Neurosurgery; Department of Physiology, University of Maryland School of Medicine, Baltimore, Maryland
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Pandey MK, Gupta SC, Nabavizadeh A, Aggarwal BB. Regulation of cell signaling pathways by dietary agents for cancer prevention and treatment. Semin Cancer Biol 2017; 46:158-181. [PMID: 28823533 DOI: 10.1016/j.semcancer.2017.07.002] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 07/05/2017] [Accepted: 07/12/2017] [Indexed: 12/17/2022]
Abstract
Although it is widely accepted that better food habits do play important role in cancer prevention and treatment, how dietary agents mediate their effects remains poorly understood. More than thousand different polyphenols have been identified from dietary plants. In this review, we discuss the underlying mechanism by which dietary agents can modulate a variety of cell-signaling pathways linked to cancer, including transcription factors, nuclear factor κB (NF-κB), signal transducer and activator of transcription 3 (STAT3), activator protein-1 (AP-1), β-catenin/Wnt, peroxisome proliferator activator receptor- gamma (PPAR-γ), Sonic Hedgehog, and nuclear factor erythroid 2 (Nrf2); growth factors receptors (EGFR, VEGFR, IGF1-R); protein Kinases (Ras/Raf, mTOR, PI3K, Bcr-abl and AMPK); and pro-inflammatory mediators (TNF-α, interleukins, COX-2, 5-LOX). In addition, modulation of proteasome and epigenetic changes by the dietary agents also play a major role in their ability to control cancer. Both in vitro and animal based studies support the role of dietary agents in cancer. The efficacy of dietary agents by clinical trials has also been reported. Importantly, natural agents are already in clinical trials against different kinds of cancer. Overall both in vitro and in vivo studies performed with dietary agents strongly support their role in cancer prevention. Thus, the famous quote "Let food be thy medicine and medicine be thy food" made by Hippocrates 25 centuries ago still holds good.
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Affiliation(s)
- Manoj K Pandey
- Department of Biomedical Sciences, Cooper Medical School of Rowan University, Camden, NJ, USA.
| | - Subash C Gupta
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Ali Nabavizadeh
- Department of Biomedical Sciences, Cooper Medical School of Rowan University, Camden, NJ, USA
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48
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Phosphorylated mTOR Expression Profiles in Human Normal and Carcinoma Tissues. DISEASE MARKERS 2017; 2017:1397063. [PMID: 28831205 PMCID: PMC5555007 DOI: 10.1155/2017/1397063] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 06/21/2017] [Accepted: 06/28/2017] [Indexed: 11/18/2022]
Abstract
Mammalian target of rapamycin (mTOR) is a key controller of cell growth and proliferation in normal tissues and solid tumors. In the present study, an immunohistochemical analysis of the expression pattern of phosphorylated mTOR (p-mTOR) was performed in human normal fetal and adult tissues and various carcinoma tissues. p-mTOR expression showed tissue and cell type specificity in normal and cancer tissues. In normal fetal and adult tissues, p-mTOR staining was observed in the intestinal crypt, intrahepatic bile ductule, pancreatic duct, distal nephron of the kidney, umbrella cell of urothelium, mesothelial cell, and choroid plexus. In cancer tissues, p-mTOR expression was higher in adenocarcinoma than in other types of cancers, in metastatic cancer than in primary cancer, and in the forefront of the infiltrating cancer cells. These results suggest that p-mTOR is implicated not only in cell proliferation but also in tubular morphogenesis in normal and cancer tissues. In addition, mTOR activation appears to be associated with cancer cell invasion and migration in solid tumors.
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49
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Fan QW, Nicolaides TP, Weiss WA. Inhibiting 4EBP1 in Glioblastoma. Clin Cancer Res 2017; 24:14-21. [PMID: 28696243 DOI: 10.1158/1078-0432.ccr-17-0042] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Revised: 06/07/2017] [Accepted: 06/30/2017] [Indexed: 12/20/2022]
Abstract
Glioblastoma is the most common and aggressive adult brain cancer. Tumors show frequent dysregulation of the PI3K-mTOR pathway. Although a number of small molecules target the PI3K-AKT-mTOR axis, their preclinical and clinical efficacy has been limited. Reasons for treatment failure include poor penetration of agents into the brain and observations that blockade of PI3K or AKT minimally affects downstream mTOR activity in glioma. Clinical trials using allosteric mTOR inhibitors (rapamycin and rapalogs) to treat patients with glioblastoma have also been unsuccessful or uncertain, in part, because rapamycin inefficiently blocks the mTORC1 target 4EBP1 and feeds back to activate PI3K-AKT signaling. Inhibitors of the mTOR kinase (TORKi) such as TAK-228/MLN0128 interact orthosterically with the ATP- and substrate-binding pocket of mTOR kinase, efficiently block 4EBP1 in vitro, and are currently being investigated in the clinical trials. Preclinical studies suggest that TORKi have poor residence times of mTOR kinase, and our data suggest that this poor pharmacology translates into disappointing efficacy in glioblastoma xenografts. RapaLink-1, a TORKi linked to rapamycin, represents a drug with improved pharmacology against 4EBP1. In this review, we clarify the importance of 4EBP1 as a biomarker for the efficacy of PI3K-AKT-mTOR inhibitors in glioblastoma. We also review mechanistic data by which RapaLink-1 blocks p-4EBP1 and discuss future clinical strategies for 4EBP1 inhibition in glioblastoma. Clin Cancer Res; 24(1); 14-21. ©2017 AACR.
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Affiliation(s)
- Qi Wen Fan
- Department of Neurology, University of California, San Francisco, California.,Helen Diller Family Comprehensive Cancer Center, San Francisco, California
| | - Theodore P Nicolaides
- Helen Diller Family Comprehensive Cancer Center, San Francisco, California.,Department of Pediatrics, University of California, San Francisco, California.,Department of Neurological Surgery, University of California, San Francisco, California
| | - William A Weiss
- Department of Neurology, University of California, San Francisco, California. .,Helen Diller Family Comprehensive Cancer Center, San Francisco, California.,Department of Pediatrics, University of California, San Francisco, California.,Department of Neurological Surgery, University of California, San Francisco, California
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50
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Schaffrath J, Schmoll HJ, Voigt W, Müller LP, Müller-Tidow C, Mueller T. Efficacy of targeted drugs in germ cell cancer cell lines with differential cisplatin sensitivity. PLoS One 2017; 12:e0178930. [PMID: 28591197 PMCID: PMC5462387 DOI: 10.1371/journal.pone.0178930] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 05/22/2017] [Indexed: 12/25/2022] Open
Abstract
Testicular germ cell tumors (TGCTs) are the most common malignancies in men between the age of 15 and 35. Although cisplatin-based chemotherapy is highly effective in advanced disease, approximately 20% of patients have an unfavorable prognosis due to primary or acquired cisplatin resistance. For these patients, new therapeutic options are urgently needed. In numerous tumor entities, combinations of monoclonal antibodies or kinase inhibitors with chemotherapy exerted promising preclinical or clinical results, which have led to new treatment concepts. This prompted us to investigate the activity of different targeted agents alone or in combination with cisplatin in a panel of TGCT cell lines.
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Affiliation(s)
- Judith Schaffrath
- Department of Internal Medicine IV, Oncology/Hematology, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Hans-Joachim Schmoll
- Workgroup Clinical Studies in Oncology, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Wieland Voigt
- Medical Innovations and Management, Innovation in Oncology, Steinbeis University, Berlin, Germany
| | - Lutz P. Müller
- Department of Internal Medicine IV, Oncology/Hematology, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Carsten Müller-Tidow
- Department of Internal Medicine V, Hematology, Oncology and Rheumatology, Heidelberg University Hospital, Heidelberg, Germany
| | - Thomas Mueller
- Department of Internal Medicine IV, Oncology/Hematology, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
- * E-mail:
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