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Suleiman M, Al Najjar A, Zakaria ZZ, Ahmed R, Yalcin HC, Korashy HM, Uddin S, Riaz S, Abdulrahman N, Mraiche F. The Role of p90 Ribosomal S6 Kinase (RSK) in Tyrosine Kinase Inhibitor (TKI)-Induced Cardiotoxicity. J Cardiovasc Transl Res 2024; 17:334-344. [PMID: 37725271 DOI: 10.1007/s12265-023-10431-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 08/22/2023] [Indexed: 09/21/2023]
Abstract
Targeted therapy, such as tyrosine kinase inhibitors (TKIs), has been approved to manage various cancer types. However, TKI-induced cardiotoxicity is a limiting factor for their use. This issue has raised the need for investigating potential cardioprotective techniques to be combined with TKIs. Ribosomal S6-kinases (RSKs) are a downstream effector of the mitogen-activated-protein-kinase (MAPK) pathway; specific RSK isoforms, such as RSK1 and RSK2, have been expressed in cancer cells, in which they increase tumour proliferation. Selective targeting of those isoforms would result in tumour suppression. Moreover, activation of RSKs expressed in the heart has resulted in cardiac hypertrophy and arrhythmia; thus, inhibiting RSKs would result in cardio-protection. This review article presents an overview of the usefulness of RSK inhibitors that can be novel agents to be assessed in future research for their effect in reducing cancer proliferation, as well as protecting the heart from cardiotoxicity induced by TKIs.
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Affiliation(s)
- Muna Suleiman
- Department of Pharmaceutical Sciences, College of Pharmacy, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Afnan Al Najjar
- National Center for Cancer Care and Research, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar
| | - Zain Z Zakaria
- Medical and Health Sciences, Qatar University, PO Box 2713, Doha, Qatar
| | - Rashid Ahmed
- Department of Biotechnology, Faculty of Science, Mirpur University of Science and Technology, Mirpur, 10250, AJK, Pakistan
| | - Huseyin C Yalcin
- Biomedical Research Centre (BRC), Qatar University, PO Box 2713, Doha, Qatar
- College of Health Sciences, QU-Health, Qatar University, PO Box 2713, Doha, Qatar
| | - Hesham M Korashy
- National Center for Cancer Care and Research, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar
| | - Shahab Uddin
- Translational Research Institute and Dermatology Institute, Academic Health System, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar
| | - Sadaf Riaz
- Pharmacy Department, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar
| | - Nabeel Abdulrahman
- College of Health Sciences, QU-Health, Qatar University, PO Box 2713, Doha, Qatar
| | - Fatima Mraiche
- National Center for Cancer Care and Research, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar.
- Department of Pharmacology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada.
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Ali R, Alnaimi SJ, Abdulrahim S, Mraiche F. Correction to: Developing Leadership Skills in Pharmacy Education. Med Sci Educ 2023; 33:1445. [PMID: 38188375 PMCID: PMC10767080 DOI: 10.1007/s40670-023-01948-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 11/13/2023] [Indexed: 01/09/2024]
Abstract
[This corrects the article DOI: 10.1007/s40670-022-01532-x.].
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Affiliation(s)
- Raja Ali
- College of Pharmacy, QU Health, Qatar University, Doha, Qatar
| | | | - Sara Abdulrahim
- College of Pharmacy, QU Health, Qatar University, Doha, Qatar
| | - Fatima Mraiche
- College of Pharmacy, QU Health, Qatar University, Doha, Qatar
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3
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Fairuz S, Ang CW, Mraiche F, Goh JK. Current Targets and Future Directions of Positive Inotropes for Heart Failure. Curr Med Chem 2023; 31:CMC-EPUB-135757. [PMID: 37909442 DOI: 10.2174/0109298673262360231018193823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 06/23/2023] [Accepted: 09/11/2023] [Indexed: 11/03/2023]
Abstract
While a congestive heart failure patient will ultimately need an assist device or even a replacement heart as the disease progresses, not every patient is qualified for such advanced therapy. Such patients awaiting better circulatory support benefit from positive inotropes in the meantime as palliative care. These agents are often prescribed in patients with acute decompensated heart failure, with reduced left ventricular ejection fraction and symptoms of organ dysfunction. Although positive inotropes, for example, digoxin, dobutamine, milrinone, levosimendan, etc., are successfully marketed and in use, a lot of their adverse effects, like arrhythmias, hypotension, and even sudden cardiac death, are rather encouraging further research on the development of novel positive inotropes. This review has investigated the molecular mechanisms of some of these adverse effects in terms of the proteins they target, followed by research on newer targets. Studies from 2013-2023 that have reported new small molecules with positive inotropic effects have been revisited in order to determine the progress made so far in drug discovery.
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Affiliation(s)
- Shadreen Fairuz
- School of Science, Monash University, Jalan Lagoon Selatan, Bandar Sunway, 47500 Subang Jaya, Selangor, Malaysiya
| | - Chee Wei Ang
- School of Science, Monash University, Jalan Lagoon Selatan, Bandar Sunway, 47500 Subang Jaya, Selangor, Malaysia
| | - Fatima Mraiche
- Department of Pharmacology, University of Alberta, 116 St & 85 Ave, Edmonton, ABT6G 2R3, Canada
| | - Joo Kheng Goh
- School of Science, Monash University, Jalan Lagoon Selatan, Bandar Sunway, 47500 Subang Jaya, Selangor, Malaysia
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Khan AQ, Siveen KS, Prabhu KS, Kuttikrishnan S, Akhtar S, Shaar A, Raza A, Mraiche F, Dermime S, Uddin S. Corrigendum: Curcumin-mediated degradation of S-phase kinase protein 2 induces cytotoxic effects in human papillomavirus-positive and negative squamous carcinoma cells. Front Oncol 2023; 13:1292898. [PMID: 37841444 PMCID: PMC10573288 DOI: 10.3389/fonc.2023.1292898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 09/13/2023] [Indexed: 10/17/2023] Open
Abstract
[This corrects the article DOI: 10.3389/fonc.2018.00399.].
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Affiliation(s)
- Abdul Q Khan
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Kodappully S Siveen
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Kirti S Prabhu
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Shilpa Kuttikrishnan
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Sabah Akhtar
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Abdullah Shaar
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Afsheen Raza
- National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | | | - Said Dermime
- National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - Shahab Uddin
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
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5
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Ali RM, Idoudi S, Abdulrahman N, Mraiche F. Biotechnology content in pharmacy curricula: Focus on Arab Countries. Curr Pharm Teach Learn 2023:S1877-1297(23)00177-6. [PMID: 37481456 DOI: 10.1016/j.cptl.2023.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 05/29/2023] [Accepted: 07/11/2023] [Indexed: 07/24/2023]
Abstract
INTRODUCTION Pharmaceutical biotechnology involves using the principles of biotechnology to develop drugs. With the rapid increase in biopharmaceutical products being developed and approved for use, educating pharmacy students about biotechnological products becomes paramount. However, there is a scarcity in the literature exploring biotechnology content in pharmacy education. This paper aims to explore and discuss previously published studies on biotechnology education in pharmacy curricula and will provide a brief overview of biotechnology content offered in pharmacy schools in Arab countries. PERSPECTIVE The majority of pharmacy schools in the United States and Europe offer biotechnology-related content within the curriculum as part of other courses. It has also been reported that biotechnology content is taught in 22 pharmacy schools in Arab countries. In general, biotechnology content is mostly taught as part of other pharmacy courses and is often provided as compulsory content. Including pharmaceutical biotechnology concepts in pharmacy curriculum has positive impact on pharmacy students as it increases their knowledge of biotechnology and their interest in the topic. IMPLICATION Pharmaceutical biotechnology is an important field in which pharmacy graduates should be knowledgeable. However, there is a need to explore biotechnology content offered in pharmacy schools in other parts of the world in order to have an understanding of how different pharmacy programs prepare their students for practice. The information currently available in the literature is not enough to determine the usefulness of pharmaceutical biotechnology content currently offered to prepare pharmacists for practice. This highlights the need for further research in the area.
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Affiliation(s)
- Raja Mahamade Ali
- College of Pharmacy, QU Health, Qatar University, Doha, P.O. Box 2713, Qatar.
| | - Sourour Idoudi
- College of Pharmacy, QU Health, Qatar University, Doha, P.O. Box 2713, Qatar.
| | - Nabeel Abdulrahman
- College of Pharmacy, QU Health, Qatar University, Doha, P.O. Box 2713, Qatar; Translational Research Institute, Hamad Medical Corporation, Doha, Qatar.
| | - Fatima Mraiche
- Department of Pharmacology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada.
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White PJ, Guilding C, Angelo T, Kelly JP, Gorman L, Tucker SJ, Fun A, Han J, Chen G, Samak Y, Babey AM, Caetano FA, Sarangi SC, Koenig J, Hao H, Goldfarb J, Karpa K, Vieira L, Restini C, Cunningham M, Aronsson P, Kelly-Laubscher R, Hernandez M, Rangachari PK, Mifsud J, Mraiche F, Sabra R, Piñeros O, Zhen X, Kwanashie H, Exintaris B, Karunaratne N, Ishii K, Liu Y. Identifying the core concepts of pharmacology education: A global initiative. Br J Pharmacol 2023; 180:1197-1209. [PMID: 36470846 DOI: 10.1111/bph.16000] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 10/27/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND AND PURPOSE In recent decades, a focus on the most critical and fundamental concepts has proven highly advantageous to students and educators in many science disciplines. Pharmacology, unlike microbiology, biochemistry, or physiology, lacks a consensus list of such core concepts. EXPERIMENTAL APPROACH We sought to develop a research-based, globally relevant list of core concepts that all students completing a foundational pharmacology course should master. This two-part project consisted of exploratory and refinement phases. The exploratory phase involved empirical data mining of the introductory sections of five key textbooks, in parallel with an online survey of over 200 pharmacology educators from 17 countries across six continents. The refinement phase involved three Delphi rounds involving 24 experts from 15 countries across six continents. KEY RESULTS The exploratory phase resulted in a consolidated list of 74 candidate core concepts. In the refinement phase, the expert group produced a consensus list of 25 core concepts of pharmacology. CONCLUSION AND IMPLICATIONS This list will allow pharmacology educators everywhere to focus their efforts on the conceptual knowledge perceived to matter most by experts within the discipline. Next steps for this project include defining and unpacking each core concept and developing resources to help pharmacology educators globally teach and assess these concepts within their educational contexts.
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Affiliation(s)
- Paul J White
- Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Clare Guilding
- School of Medicine, Faculty of Medical Sciences, Newcastle Upon Tyne, UK
| | - Tom Angelo
- UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina, USA
| | - John P Kelly
- Pharmacology and Therapeutics, School of Medicine, National University of Ireland Galway, Galway, Ireland
| | - Laurel Gorman
- Department Medical Education, University of Central Florida College of Medicine, Orlando, Florida, USA
| | - Steven J Tucker
- School of Medicine, Medical Science and Nutrition, University of Aberdeen, Aberdeen, UK
| | - Ashleigh Fun
- Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Jae Han
- Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Guanliang Chen
- Centre for Learning Analytics at Monash, Faculty of Information Technology, Monash University, Clayton, Victoria, Australia
| | - Yassmin Samak
- Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Anna-Marie Babey
- Faculty of Medicine and Health, University of New England, Armidale, New South Wales, Australia
| | - Fabiana A Caetano
- Department of Physiology and Pharmacology, Western University, London, Ontario, Canada
| | | | - Jennifer Koenig
- Division of Medical Sciences and Graduate Entry Medicine, School of Medicine, University of Nottingham, Nottingham, UK
| | - Haiping Hao
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Joseph Goldfarb
- Department of Pharmacological Sciences and Institute for Systems Biomedicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Kelly Karpa
- Department of Medical Education and Family Medicine, East Tennessee State University, Johnson City, Tennessee, USA
| | - Luciene Vieira
- Departamento de Farmacologia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Carolina Restini
- Pharmacology and Toxicology Department, College of Osteopathic Medicine, Michigan State University, Clinton Township, Michigan, USA
| | - Margaret Cunningham
- Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS), University of Strathclyde, Glasgow, UK
| | - Patrik Aronsson
- Department of Pharmacology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Roisin Kelly-Laubscher
- Department of Pharmacology and Therapeutics, College of Medicine and Health, University College Cork, Cork, Ireland
| | - Mark Hernandez
- Division of Anatomy and Molecular Medicine, Alabama College of Osteopathic Medicine, Dothan, Alabama, USA
| | - Patangi K Rangachari
- Department of Medicine, Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Janet Mifsud
- Department of Clinical Pharmacology and Therapeutics, Faculty of Medicine and Surgery, University of Malta, Msida, Malta
| | - Fatima Mraiche
- College of Pharmacy, QU-Health, Qatar University, Doha, Qatar
| | - Ramzi Sabra
- Faculty of Medicine, American University of Beirut, Beirut, Lebanon
| | - Octavio Piñeros
- Department of Family Medicine, School of Medicine, Faculty of Health, Universidad del Valle, Cali, Colombia
| | - Xuechu Zhen
- Jiangsu Key Laboratory of Neuropsychiatric Diseases Research and College of Pharmaceutical Sciences, Soochow University, Soochow, China
| | - Helen Kwanashie
- Department of Nursing Science, Faculty of Health Sciences, National Open University of Nigeria, Abuja, Nigeria
| | - Betty Exintaris
- Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Nilushi Karunaratne
- Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Kuniaki Ishii
- Department of Pharmacology, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Yannee Liu
- Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
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Elshami S, Awaisu A, Abidi R, Al-Ghazal L, Al-Hathal T, Basil M, Fakhr N, Yakti O, El-Awaisi A, Stewart D, Mraiche F, Diab M, Mukhalalati B. Examining Pharmacy Alumni's Perceptions of Job Satisfaction, Achievements, and Preparedness: A Mixed-Methods Study. Am J Pharm Educ 2023; 87:100059. [PMID: 37288694 DOI: 10.1016/j.ajpe.2023.100059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 09/19/2022] [Accepted: 09/28/2022] [Indexed: 06/09/2023]
Abstract
OBJECTIVES There is a scarcity of research that holistically explores pharmacy alumni's employment experience and their professional performance. Job satisfaction is linked to professionals' productivity and their educational preparedness. This study aimed to explore the professional experiences of the College of Pharmacy-Qatar University alumni. METHODS A convergent mixed-methods design was utilized to examine the alumni's perceptions of job satisfaction, achievements in the workplace, and preparedness for practice through both quantitative and qualitative approaches. This study involved the administration of a pre-tested online questionnaire among all alumni (n = 214) and the conduction of 7 focus groups of which the participants were selected from a heterogeneous purposive sample (n = 87). Herzberg's motivation-hygiene theory was applied in both approaches. RESULTS One hundred thirty-six alumni completed the questionnaire (response rate = 63.6%), and 40 alumni attended the focus groups. A good level of job satisfaction was shown (median score = 30 [IQR = 12], [out of 48]). Sources of job satisfaction and dissatisfaction were recognition and limited opportunities for professional growth, respectively. Also, good satisfaction was revealed (median score = 20 [IQR = 21], [out of 56]) with the alumni's ability to attain several achievements (eg, developing pharmacy-related services), which allowed for career success. Moreover, fair agreement concerning the adequacy of the preparedness for practice was indicated (eg, being care providers) (mean = 37 [SD = 7.5], [out of 52]). However, certain aspects, such as the enhancement of non-clinical knowledge, warranted further improvement. CONCLUSION Overall, pharmacy alumni had positive perceptions of their professional experiences. However, alumni's excellence in different pharmacy career prospects needs to be supported throughout their learning experience.
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Affiliation(s)
- Sara Elshami
- Clinical Pharmacy and Practice Department, College of Pharmacy, QU-Health, Qatar University, Doha, Qatar
| | - Ahmed Awaisu
- Clinical Pharmacy and Practice Department, College of Pharmacy, QU-Health, Qatar University, Doha, Qatar
| | - Ranin Abidi
- Clinical Pharmacy and Practice Department, College of Pharmacy, QU-Health, Qatar University, Doha, Qatar
| | - Lolwa Al-Ghazal
- Clinical Pharmacy and Practice Department, College of Pharmacy, QU-Health, Qatar University, Doha, Qatar
| | - Turfa Al-Hathal
- Clinical Pharmacy and Practice Department, College of Pharmacy, QU-Health, Qatar University, Doha, Qatar
| | - Mounyah Basil
- Clinical Pharmacy and Practice Department, College of Pharmacy, QU-Health, Qatar University, Doha, Qatar
| | - Nour Fakhr
- Clinical Pharmacy and Practice Department, College of Pharmacy, QU-Health, Qatar University, Doha, Qatar
| | - Ola Yakti
- Clinical Pharmacy and Practice Department, College of Pharmacy, QU-Health, Qatar University, Doha, Qatar
| | - Alla El-Awaisi
- Clinical Pharmacy and Practice Department, College of Pharmacy, QU-Health, Qatar University, Doha, Qatar
| | - Derek Stewart
- Clinical Pharmacy and Practice Department, College of Pharmacy, QU-Health, Qatar University, Doha, Qatar
| | - Fatima Mraiche
- Pharmaceutical Sciences Department, College of Pharmacy, QU-Health, Qatar University, Doha, Qatar
| | - Mohammad Diab
- Clinical Pharmacy and Practice Department, College of Pharmacy, QU-Health, Qatar University, Doha, Qatar
| | - Banan Mukhalalati
- Clinical Pharmacy and Practice Department, College of Pharmacy, QU-Health, Qatar University, Doha, Qatar.
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Alizadeh J, Kavoosi M, Singh N, Lorzadeh S, Ravandi A, Kidane B, Ahmed N, Mraiche F, Mowat MR, Ghavami S. Regulation of Autophagy via Carbohydrate and Lipid Metabolism in Cancer. Cancers (Basel) 2023; 15:cancers15082195. [PMID: 37190124 DOI: 10.3390/cancers15082195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 03/21/2023] [Accepted: 03/28/2023] [Indexed: 05/17/2023] Open
Abstract
Metabolic changes are an important component of tumor cell progression. Tumor cells adapt to environmental stresses via changes to carbohydrate and lipid metabolism. Autophagy, a physiological process in mammalian cells that digests damaged organelles and misfolded proteins via lysosomal degradation, is closely associated with metabolism in mammalian cells, acting as a meter of cellular ATP levels. In this review, we discuss the changes in glycolytic and lipid biosynthetic pathways in mammalian cells and their impact on carcinogenesis via the autophagy pathway. In addition, we discuss the impact of these metabolic pathways on autophagy in lung cancer.
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Affiliation(s)
- Javad Alizadeh
- Department of Human Anatomy and Cell Science, College of Medicine, University of Manitoba, Winnipeg, MB R3E 0V9, Canada
| | - Mahboubeh Kavoosi
- Department of Human Anatomy and Cell Science, College of Medicine, University of Manitoba, Winnipeg, MB R3E 0V9, Canada
| | - Navjit Singh
- Department of Human Anatomy and Cell Science, College of Medicine, University of Manitoba, Winnipeg, MB R3E 0V9, Canada
| | - Shahrokh Lorzadeh
- Department of Human Anatomy and Cell Science, College of Medicine, University of Manitoba, Winnipeg, MB R3E 0V9, Canada
| | - Amir Ravandi
- Department of Physiology and Pathophysiology, Rady Faculty of Health Sciences, Institute of Cardiovascular Sciences, Albrechtsen Research Centre, St. Boniface Hospital, Winnipeg, MB R2H 2A6, Canada
| | - Biniam Kidane
- Section of Thoracic Surgery, Department of Surgery, Health Sciences Centre, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB R3T 6C5, Canada
- CancerCare Manitoba Research Institute, Winnipeg, MB R3E 0V9, Canada
| | - Naseer Ahmed
- CancerCare Manitoba Research Institute, Winnipeg, MB R3E 0V9, Canada
- Department of Radiology, Section of Radiation Oncology, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Fatima Mraiche
- College of Pharmacy, QU Health, Qatar University, Doha 2713, Qatar
- Department of Pharmacology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2H7, Canada
| | - Michael R Mowat
- CancerCare Manitoba Research Institute, Winnipeg, MB R3E 0V9, Canada
- Department of Biochemistry & Medical Genetics, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
| | - Saeid Ghavami
- Department of Human Anatomy and Cell Science, College of Medicine, University of Manitoba, Winnipeg, MB R3E 0V9, Canada
- Research Institute of Oncology and Hematology, Winnipeg, MB R3E 0V9, Canada
- Faculty of Medicine in Zabrze, Academia of Silesia, 41-800 Zabrze, Poland
- Biology of Breathing Theme, Children Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, MB R3E 3P5, Canada
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9
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Gorachinov F, Mraiche F, Moustafa DA, Hishari O, Ismail Y, Joseph J, Crcarevska MS, Dodov MG, Geskovski N, Goracinova K. Nanotechnology - a robust tool for fighting the challenges of drug resistance in non-small cell lung cancer. Beilstein J Nanotechnol 2023; 14:240-261. [PMID: 36865093 PMCID: PMC9972888 DOI: 10.3762/bjnano.14.23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
Genomic and proteomic mutation analysis is the standard of care for selecting candidates for therapies with tyrosine kinase inhibitors against the human epidermal growth factor receptor (EGFR TKI therapies) and further monitoring cancer treatment efficacy and cancer development. Acquired resistance due to various genetic aberrations is an unavoidable problem during EGFR TKI therapy, leading to the rapid exhaustion of standard molecularly targeted therapeutic options against mutant variants. Attacking multiple molecular targets within one or several signaling pathways by co-delivery of multiple agents is a viable strategy for overcoming and preventing resistance to EGFR TKIs. However, because of the difference in pharmacokinetics among agents, combined therapies may not effectively reach their targets. The obstacles regarding the simultaneous co-delivery of therapeutic agents at the site of action can be overcome using nanomedicine as a platform and nanotools as delivery agents. Precision oncology research to identify targetable biomarkers and optimize tumor homing agents, hand in hand with designing multifunctional and multistage nanocarriers that respond to the inherent heterogeneity of the tumors, may resolve the challenges of inadequate tumor localization, improve intracellular internalization, and bring advantages over conventional nanocarriers.
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Affiliation(s)
- Filip Gorachinov
- Institute of Pharmaceutical Technology, Faculty of Pharmacy, University of Ss. Cyril and Methodius in Skopje, 1000 Skopje, North Macedonia
| | - Fatima Mraiche
- College of Pharmacy, QU Health, Qatar University, PO Box 2713, Doha, Qatar
- Department of Pharmacology, Faculty of Medicine and Dentistry, University of Alberta, T6G 2R3 Edmonton, Canada
| | | | - Ola Hishari
- College of Pharmacy, QU Health, Qatar University, PO Box 2713, Doha, Qatar
| | - Yomna Ismail
- College of Pharmacy, QU Health, Qatar University, PO Box 2713, Doha, Qatar
| | - Jensa Joseph
- College of Pharmacy, QU Health, Qatar University, PO Box 2713, Doha, Qatar
| | - Maja Simonoska Crcarevska
- Institute of Pharmaceutical Technology, Faculty of Pharmacy, University of Ss. Cyril and Methodius in Skopje, 1000 Skopje, North Macedonia
| | - Marija Glavas Dodov
- Institute of Pharmaceutical Technology, Faculty of Pharmacy, University of Ss. Cyril and Methodius in Skopje, 1000 Skopje, North Macedonia
| | - Nikola Geskovski
- Institute of Pharmaceutical Technology, Faculty of Pharmacy, University of Ss. Cyril and Methodius in Skopje, 1000 Skopje, North Macedonia
| | - Katerina Goracinova
- Institute of Pharmaceutical Technology, Faculty of Pharmacy, University of Ss. Cyril and Methodius in Skopje, 1000 Skopje, North Macedonia
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10
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Geskovski N, Mraiche F, C. Yalcin H, Gorachinov F, A. Moustafa D, Dimchevska S, Glavas Dodov M, Simonoska Crcarevska M, Goracinova K. Nanotechnology in medicine – our experiences. Maced Pharm Bull 2022. [DOI: 10.33320/maced.pharm.bull.2022.68.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Affiliation(s)
- Nikola Geskovski
- Faculty of Pharmacy, Ss. Cyril and Methodius University in Skopje, Majka Tereza 47, 1000 Skopje, North Macedonia
| | - Fatima Mraiche
- College of Pharmacy, Qatar University, 4Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University
| | - Huseyin C. Yalcin
- College of Pharmacy, Qatar University, 4Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University
| | - Filip Gorachinov
- Faculty of Pharmacy, Ss. Cyril and Methodius University in Skopje, Majka Tereza 47, 1000 Skopje, North Macedonia
| | | | | | - Marija Glavas Dodov
- Faculty of Pharmacy, Ss. Cyril and Methodius University in Skopje, Majka Tereza 47, 1000 Skopje, North Macedonia
| | - Maja Simonoska Crcarevska
- Faculty of Pharmacy, Ss. Cyril and Methodius University in Skopje, Majka Tereza 47, 1000 Skopje, North Macedonia
| | - Katerina Goracinova
- Faculty of Pharmacy, Ss. Cyril and Methodius University in Skopje, Majka Tereza 47, 1000 Skopje, North Macedonia
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11
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Adham SA, Szewczuk MR, Mraiche F, Petricoin E. Editorial: Recent advancements in neoadjuvant chemotherapy for specific breast cancer subtypes. Front Oncol 2022; 12:1100427. [PMID: 36582793 PMCID: PMC9793895 DOI: 10.3389/fonc.2022.1100427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 11/23/2022] [Indexed: 12/15/2022] Open
Affiliation(s)
- Sirin A. Adham
- Department of Biology, College of Science, Sultan Qaboos University, Muscat, Oman,*Correspondence: Sirin A. Adham, ;
| | - Myron R. Szewczuk
- Department of Biomedical and Molecular Sciences, Queen’s University, Kingston, ON, Canada
| | - Fatima Mraiche
- College of Pharmacy, QU Health, Qatar University, Doha, Qatar
| | - Emanuel Petricoin
- Institute for Biomedical Innovation, George Mason University, Manassas, VA, United States
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12
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Ali ZO, Bader L, Mohammed S, Arafa S, Arabi A, Cavallari L, Langaee T, Mraiche F, Rizk N, Awaisu A, Shahin MH, Elewa H. Effect of CYP2C19 genetic variants on bleeding and major adverse cardiovascular events in a cohort of Arab patients undergoing percutaneous coronary intervention and stent implantation. Pharmacogenet Genomics 2022; 32:183-191. [PMID: 35389962 DOI: 10.1097/fpc.0000000000000469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
INTRODUCTION One-third of patients have clopidogrel resistance that may lead to major adverse cardiac events (MACEs). By contrast, it was found that some clopidogrel-treated patients have hyperresponsive platelets that are associated with higher bleeding risk. Several studies have shown that polymorphisms in the gene encoding the CYP2C19 contribute to the variability in response to clopidogrel. Data on genetic and nongenetic factors affecting clopidogrel response in the Arab population are scarce. In this prospective cohort study, we sought to assess the association between the increased function allele (CYP2C19*17) and bleeding events, and validate the effect of the CYP2C19 genetic variants and nongenetic factors on the incidence of MACEs. METHODS Blood samples were collected from patients that were undergoing percutaneous coronary intervention and receiving clopidogrel at the Heart Hospital, a specialist tertiary hospital in Doha, Qatar. Patients were followed for 12 months. Genotyping was performed for CYP2C19*2, *3, and *17 using TaqMan assays. RESULTS In 254 patients, the minor allele frequencies were 0.13, 0.004, and 0.21 for *2, *3, and *17, respectively. Over a 12-month follow-up period, there were 21 bleeding events (8.5 events/100 patient-year). CYP2C19*17 carriers were found to be associated with increased risk of bleeding (OR, 21.6; 95% CI, 4.8-96.8; P < 0.0001). CYP2C19*2 or *3 carriers were found to be associated with increased risk of baseline and incident MACE combined (OR, 8.4; 95% CI, 3.2-23.9; P < 0.0001). CONCLUSION This study showed a significant association between CYP2C19*17 allele and the increased risk of bleeding, and CYP2C19*2 or *3 with MACE outcomes.
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Affiliation(s)
- Zainab Omer Ali
- Pharmacy Department, Heart Hospital, Hamad Medical Corporation
| | - Loulia Bader
- College of Pharmacy, QU Health, Qatar University
| | - Shaaban Mohammed
- Pharmacy Department, Women Wellness and Research Center, Hamad Medical Corporation
| | - Salaheddin Arafa
- Department of Cardiology, Heart Hospital, Hamad Medical Corporation, Doha, Qatar
| | - Abdulrahman Arabi
- Department of Cardiology, Heart Hospital, Hamad Medical Corporation, Doha, Qatar
| | - Larisa Cavallari
- Department of Pharmacotherapy and Translational Research and Center for Pharmacogenomics and Precision Medicine, University of Florida, Gainesville, Florida, USA
| | - Taimour Langaee
- Department of Pharmacotherapy and Translational Research and Center for Pharmacogenomics and Precision Medicine, University of Florida, Gainesville, Florida, USA
| | - Fatima Mraiche
- College of Pharmacy, QU Health, Qatar University
- Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University
| | - Nasser Rizk
- Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University
- Pfizer Global Research, Groton, Connecticut, USA
| | - Ahmed Awaisu
- College of Pharmacy, QU Health, Qatar University
| | | | - Hazem Elewa
- College of Pharmacy, QU Health, Qatar University
- Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University
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13
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Osman A, Al-Badriyeh D, Hussain FN, Riaz S, Elewa H, Mraiche F. The design and implementation of an undergraduate health professional degree elective course on scientific writing, peer assessment, and critical appraisal. Curr Pharm Teach Learn 2022; 14:765-772. [PMID: 35809907 DOI: 10.1016/j.cptl.2022.06.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 04/22/2022] [Accepted: 06/09/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND AND PURPOSE Strong writing skills are critical to the pharmacy profession. This paper describes the design, delivery, and impact of a course intended to develop pharmacy students' scientific writing, peer assessment, and critical appraisal skills. EDUCATIONAL ACTIVITY AND SETTING The course was offered in the final year of an undergraduate pharmacy program with students whose first language is not English. In this course, students write two structured pharmacy review articles (PRA) based on assigned scientific research articles and peer assess each others' written PRAs. Students also critically appraise scientific research articles on a weekly basis, complete one pre-journal club written reflective critique based on a assigned scientific research article, and moderate one journal club session. FINDINGS Course rubrics were developed and validated by the course coordinators. A survey administered to students enrolled in the course identified that 85% of the students perceived that they gained adequate writing skills in the course. More than 70% of the students indicated they had the necessary skills to evaluate their peers' written assessments, and 93% felt comfortable providing and receiving feedback from peers. More than 90% of the students indicated that writing PRAs and the peer assessment improved their critical and analytical skills. SUMMARY This course improved students' scientific writing, peer assessment, and critical appraisal skills. Further practice is required to reinforce the skills learned and to strengthen the writing skills of students.
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Affiliation(s)
- Aisha Osman
- College of Pharmacy, QU Health, Qatar University, Doha, Qatar.
| | | | | | - Sadaf Riaz
- College of Pharmacy, QU Health, Qatar University, Doha, Qatar
| | - Hazem Elewa
- College of Pharmacy, QU Health, Qatar University, Doha, Qatar.
| | - Fatima Mraiche
- College of Pharmacy, QU Health, Qatar University, Doha, Qatar.
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14
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Abstract
Leadership could refer to holding official leadership positions or advocating for patients and the profession. Different pharmacy organizations recommend the inclusion of leadership development in pharmacy education and as such some pharmacy schools have introduced courses or various initiatives which support the development of leadership skills. In this commentary, we discuss means by which various pharmacy schools incorporate ways to develop leadership skills. This commentary also addresses the competencies used to assess leadership skills in pharmacy education. Supplementary Information The online version contains supplementary material available at 10.1007/s40670-022-01532-x.
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Affiliation(s)
- Raja Ali
- College of Pharmacy, QU Health, Qatar University, Doha, Qatar
| | | | - Sara Abdulrhim
- College of Pharmacy, QU Health, Qatar University, Doha, Qatar
| | - Fatima Mraiche
- College of Pharmacy, QU Health, Qatar University, Doha, Qatar
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15
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Abdulrahman N, Ibrahim M, Joseph JM, Elkoubatry HM, Al-Shamasi AA, Rayan M, Gadeau AP, Ahmed R, Eldassouki H, Hasan A, Mraiche F. Empagliflozin inhibits angiotensin II-induced hypertrophy in H9c2 cardiomyoblasts through inhibition of NHE1 expression. Mol Cell Biochem 2022; 477:1865-1872. [PMID: 35334035 PMCID: PMC9068664 DOI: 10.1007/s11010-022-04411-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 03/10/2022] [Indexed: 02/06/2023]
Abstract
Diabetes mellitus (DM)-induced cardiac morbidities have been the leading cause of death among diabetic patients. Recently, sodium-glucose cotransporter-2 (SGLT-2) inhibitors including empagliflozin (EMPA), which have been approved for the treatment of DM, have gained attention for their cardioprotective effect. The mechanism by which SGLT-2 inhibitors exert their cardioprotective effect remains unclear. Recent studies have suggested that EMPA exerts its cardioprotective effect by inhibiting the Na+/H+ exchanger (NHE), a group of membrane proteins that regulate intracellular pH and cell volume. Increased activity and expression of NHE isoform 1 (NHE1), the predominant isoform expressed in the heart, leads to cardiac hypertrophy. p90 ribosomal s6 kinase (p90 RSK) has been demonstrated to stimulate NHE1 activity. In our study, H9c2 cardiomyoblasts were treated with angiotensin II (ANG) to activate NHE1 and generate a hypertrophic model. We aimed to understand whether EMPA reverses the ANG-induced hypertrophic response and to elucidate the molecular pathway contributing to the cardioprotective effect of EMPA. Our study demonstrated that ANG-induced hypertrophy of H9c2 cardiomyoblasts is accompanied with increased SGLT-1 and NHE1 protein expression, an effect which is prevented in the presence of EMPA. EMPA reduces ANG-induced hypertrophy through the inhibition of SGLT-1 and NHE1 expression.
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Affiliation(s)
- Nabeel Abdulrahman
- College of Pharmacy, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar.,Biomedical and Pharmaceutical Research Unit, Qatar University, Doha, Qatar.,Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Meram Ibrahim
- College of Pharmacy, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar.,Biomedical and Pharmaceutical Research Unit, Qatar University, Doha, Qatar
| | - Jensa Mariam Joseph
- College of Pharmacy, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar.,Biomedical and Pharmaceutical Research Unit, Qatar University, Doha, Qatar
| | - Hanan Mahmoud Elkoubatry
- College of Pharmacy, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar.,Biomedical and Pharmaceutical Research Unit, Qatar University, Doha, Qatar
| | - Al-Anood Al-Shamasi
- College of Pharmacy, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar.,Biomedical and Pharmaceutical Research Unit, Qatar University, Doha, Qatar
| | - Menatallah Rayan
- College of Pharmacy, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar.,Biomedical and Pharmaceutical Research Unit, Qatar University, Doha, Qatar
| | | | - Rashid Ahmed
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, 2713, Doha, Qatar
| | - Hussein Eldassouki
- College of Kinesiology, University of Saskatchewan, Saskatoon, SK, Canada
| | - Anwarul Hasan
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, 2713, Doha, Qatar
| | - Fatima Mraiche
- College of Pharmacy, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar. .,Biomedical and Pharmaceutical Research Unit, Qatar University, Doha, Qatar.
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16
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Ahmed R, Zaman T, Chowdhury F, Mraiche F, Tariq M, Ahmad IS, Hasan A. Single-Cell RNA Sequencing with Spatial Transcriptomics of Cancer Tissues. Int J Mol Sci 2022; 23:3042. [PMID: 35328458 PMCID: PMC8955933 DOI: 10.3390/ijms23063042] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 02/02/2022] [Accepted: 03/07/2022] [Indexed: 01/27/2023] Open
Abstract
Single-cell RNA sequencing (RNA-seq) techniques can perform analysis of transcriptome at the single-cell level and possess an unprecedented potential for exploring signatures involved in tumor development and progression. These techniques can perform sequence analysis of transcripts with a better resolution that could increase understanding of the cellular diversity found in the tumor microenvironment and how the cells interact with each other in complex heterogeneous cancerous tissues. Identifying the changes occurring in the genome and transcriptome in the spatial context is considered to increase knowledge of molecular factors fueling cancers. It may help develop better monitoring strategies and innovative approaches for cancer treatment. Recently, there has been a growing trend in the integration of RNA-seq techniques with contemporary omics technologies to study the tumor microenvironment. There has been a realization that this area of research has a huge scope of application in translational research. This review article presents an overview of various types of single-cell RNA-seq techniques used currently for analysis of cancer tissues, their pros and cons in bulk profiling of transcriptome, and recent advances in the techniques in exploring heterogeneity of various types of cancer tissues. Furthermore, we have highlighted the integration of single-cell RNA-seq techniques with other omics technologies for analysis of transcriptome in their spatial context, which is considered to revolutionize the understanding of tumor microenvironment.
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Affiliation(s)
- Rashid Ahmed
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, Doha 2713, Qatar
- Biomedical Research Centre, Qatar University, Doha 2713, Qatar
- Department of Biotechnology, Faculty of Natural and Applied Sciences, Mirpur University of Science and Technology, Mirpur 10250 AJK, Pakistan;
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana Champaign, Urbana, IL 61801, USA;
| | - Tariq Zaman
- College of Human Medicine, Michigan State University, Grand Rapids, MI 49503, USA;
| | - Farhan Chowdhury
- Department of Mechanical Engineering and Energy Processes, Southern Illinois University Carbondale, Carbondale, IL 62901, USA;
| | - Fatima Mraiche
- Department of Pharmaceutical Sciences, College of Pharmacy, QU Health, Qatar University, Doha 2713, Qatar;
| | - Muhammad Tariq
- Department of Biotechnology, Faculty of Natural and Applied Sciences, Mirpur University of Science and Technology, Mirpur 10250 AJK, Pakistan;
| | - Irfan S. Ahmad
- Nick Holonyak Jr. Micro and Nanotechnology Laboratory, University of Illinois at Urbana Champaign, Urbana, IL 61801, USA;
- Department of Agricultural and Biological Engineering, University of Illinois at Urbana Champaign, Urbana, IL 61801, USA
- Carle Illinois College of Medicine, University of Illinois at Urbana Champaign, Urbana, IL 61801, USA
| | - Anwarul Hasan
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, Doha 2713, Qatar
- Biomedical Research Centre, Qatar University, Doha 2713, Qatar
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17
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Augustine R, S A, Nayeem A, Salam SA, Augustine P, Dan P, Maureira P, Mraiche F, Gentile C, Hansbro PM, McClements L, Hasan A. Increased complications of COVID-19 in people with cardiovascular disease: Role of the renin-angiotensin-aldosterone system (RAAS) dysregulation. Chem Biol Interact 2022; 351:109738. [PMID: 34740598 PMCID: PMC8563522 DOI: 10.1016/j.cbi.2021.109738] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 10/19/2021] [Accepted: 11/01/2021] [Indexed: 01/28/2023]
Abstract
The rapid spread of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) that causes coronavirus disease 2019 (COVID-19), has had a dramatic negative impact on public health and economies worldwide. Recent studies on COVID-19 complications and mortality rates suggest that there is a higher prevalence in cardiovascular diseases (CVD) patients. Past investigations on the associations between pre-existing CVDs and susceptibility to coronavirus infections including SARS-CoV and the Middle East Respiratory Syndrome coronavirus (MERS-CoV), have demonstrated similar results. However, the underlying mechanisms are poorly understood. This has impeded adequate risk stratification and treatment strategies for CVD patients with SARS-CoV-2 infections. Generally, dysregulation of the expression of angiotensin-converting enzyme (ACE) and the counter regulator, angiotensin-converting enzyme 2 (ACE2) is a hallmark of cardiovascular risk and CVD. ACE2 is the main host receptor for SARS-CoV-2. Although further studies are required, dysfunction of ACE2 after virus binding and dysregulation of the renin-angiotensin-aldosterone system (RAAS) signaling may worsen the outcomes of people affected by COVID-19 and with preexisting CVD. Here, we review the current knowledge and outline the gaps related to the relationship between CVD and COVID-19 with a focus on the RAAS. Improved understanding of the mechanisms regulating viral entry and the role of RAAS may direct future research with the potential to improve the prevention and management of COVID-19.
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Affiliation(s)
- Robin Augustine
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, 2713, Doha, Qatar; Biomedical Research Center (BRC), Qatar University, PO Box 2713, Doha, Qatar.
| | - Abhilash S
- Department of Microbiology, Majlis Arts and Science College, Puramannur, Malappuram, Kerala, 676552, India
| | - Ajisha Nayeem
- Department of Biotechnology, St. Mary's College, Thrissur, 680020, Kerala, India
| | - Shaheen Abdul Salam
- Department of Biosciences, MES College Marampally, Aluva, Ernakulam, 683107, Kerala, India
| | - Priya Augustine
- Department of Zoology, Kongunadu Arts and Science College, Coimbatore, Tamil Nadu, 641029, India
| | - Pan Dan
- Department of Cardiovascular and Transplantation Surgery, Regional Central Hospital of Nancy, Lorraine University, France; Department of Thoracic and Cardiovascular Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China
| | - Pablo Maureira
- Department of Cardiovascular and Transplantation Surgery, Regional Central Hospital of Nancy, Lorraine University, France
| | - Fatima Mraiche
- College of Pharmacy, QU-Health, Qatar University, PO Box 2713, Doha, Qatar
| | - Carmine Gentile
- School of Biomedical Engineering, Faculty of Engineering and IT, University of Technology Sydney, NSW, Australia; School of Medicine, Faculty of Medicine and Health, University of Sydney, NSW, Australia; Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Philip M Hansbro
- Centre for Inflammation, Centenary Institute and University of Technology Sydney, NSW, Australia; School of Life Sciences, Faculty of Science, University of Technology Sydney, NSW, Australia
| | - Lana McClements
- School of Life Sciences, Faculty of Science, University of Technology Sydney, NSW, Australia
| | - Anwarul Hasan
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, 2713, Doha, Qatar; Biomedical Research Center (BRC), Qatar University, PO Box 2713, Doha, Qatar.
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18
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Joshy KS, Augustine R, Hasan A, Ali Zahid A, Alex SM, Dalvi YB, Mraiche F, Thomas S, Kalarikkal N, Chi H. Cisplatin encapsulated nanoparticles from polymer blends for anti-cancer drug delivery. NEW J CHEM 2022. [DOI: 10.1039/d1nj04311k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Synthesis of cubic nanostructure for cisplatin encapsulation.
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Affiliation(s)
- K. S. Joshy
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, 2713, Doha, Qatar
- Biomedical Research Center (BRC), Qatar University, PO Box 2713, Doha, Qatar
| | - Robin Augustine
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, 2713, Doha, Qatar
- Biomedical Research Center (BRC), Qatar University, PO Box 2713, Doha, Qatar
| | - Anwarul Hasan
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, 2713, Doha, Qatar
- Biomedical Research Center (BRC), Qatar University, PO Box 2713, Doha, Qatar
| | - Alap Ali Zahid
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, 2713, Doha, Qatar
- Biomedical Research Center (BRC), Qatar University, PO Box 2713, Doha, Qatar
| | | | - Yogesh B. Dalvi
- Pushpagiri Research Centre, Pushpagiri Institute of Medical Sciences, Tiruvalla, Kerala 689 101, India
| | | | - Sabu Thomas
- International and Inter University Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam – 686 560, Kerala, India
| | - Nandakumar Kalarikkal
- School of Pure and Applied Physics, Mahatma Gandhi University, Kottayam – 686 560, Kerala, India
| | - Hong Chi
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
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19
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Al-Shamasi AA, Elkaffash R, Mohamed M, Rayan M, Al-Khater D, Gadeau AP, Ahmed R, Hasan A, Eldassouki H, Yalcin HC, Abdul-Ghani M, Mraiche F. Crosstalk between Sodium-Glucose Cotransporter Inhibitors and Sodium-Hydrogen Exchanger 1 and 3 in Cardiometabolic Diseases. Int J Mol Sci 2021; 22:12677. [PMID: 34884494 PMCID: PMC8657861 DOI: 10.3390/ijms222312677] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/08/2021] [Accepted: 11/12/2021] [Indexed: 12/14/2022] Open
Abstract
Abnormality in glucose homeostasis due to hyperglycemia or insulin resistance is the hallmark of type 2 diabetes mellitus (T2DM). These metabolic abnormalities in T2DM lead to cellular dysfunction and the development of diabetic cardiomyopathy leading to heart failure. New antihyperglycemic agents including glucagon-like peptide-1 receptor agonists and the sodium-glucose cotransporter-2 inhibitors (SGLT2i) have been shown to attenuate endothelial dysfunction at the cellular level. In addition, they improved cardiovascular safety by exhibiting cardioprotective effects. The mechanism by which these drugs exert their cardioprotective effects is unknown, although recent studies have shown that cardiovascular homeostasis occurs through the interplay of the sodium-hydrogen exchangers (NHE), specifically NHE1 and NHE3, with SGLT2i. Another theoretical explanation for the cardioprotective effects of SGLT2i is through natriuresis by the kidney. This theory highlights the possible involvement of renal NHE transporters in the management of heart failure. This review outlines the possible mechanisms responsible for causing diabetic cardiomyopathy and discusses the interaction between NHE and SGLT2i in cardiovascular diseases.
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Affiliation(s)
- Al-Anood Al-Shamasi
- Department of Pharmaceutical Sciences, College of Pharmacy, QU Health, Qatar University, Doha P.O. Box 2713, Qatar; (A.-A.A.-S.); (R.E.); (M.M.); (M.R.); (D.A.-K.)
- Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, Doha P.O. Box 2713, Qatar
| | - Rozina Elkaffash
- Department of Pharmaceutical Sciences, College of Pharmacy, QU Health, Qatar University, Doha P.O. Box 2713, Qatar; (A.-A.A.-S.); (R.E.); (M.M.); (M.R.); (D.A.-K.)
- Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, Doha P.O. Box 2713, Qatar
| | - Meram Mohamed
- Department of Pharmaceutical Sciences, College of Pharmacy, QU Health, Qatar University, Doha P.O. Box 2713, Qatar; (A.-A.A.-S.); (R.E.); (M.M.); (M.R.); (D.A.-K.)
- Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, Doha P.O. Box 2713, Qatar
| | - Menatallah Rayan
- Department of Pharmaceutical Sciences, College of Pharmacy, QU Health, Qatar University, Doha P.O. Box 2713, Qatar; (A.-A.A.-S.); (R.E.); (M.M.); (M.R.); (D.A.-K.)
- Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, Doha P.O. Box 2713, Qatar
| | - Dhabya Al-Khater
- Department of Pharmaceutical Sciences, College of Pharmacy, QU Health, Qatar University, Doha P.O. Box 2713, Qatar; (A.-A.A.-S.); (R.E.); (M.M.); (M.R.); (D.A.-K.)
- Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, Doha P.O. Box 2713, Qatar
| | - Alain-Pierre Gadeau
- INSERM, Biology of Cardiovascular Disease, University of Bordeaux, U1034 Pessac, France;
| | - Rashid Ahmed
- Department of Mechanical and Chemical Engineering, College of Engineering, Qatar University, Doha P.O. Box 2713, Qatar; (R.A.); (A.H.)
- Biomedical Research Centre (BRC), Qatar University, Doha P.O. Box 2713, Qatar;
| | - Anwarul Hasan
- Department of Mechanical and Chemical Engineering, College of Engineering, Qatar University, Doha P.O. Box 2713, Qatar; (R.A.); (A.H.)
- Biomedical Research Centre (BRC), Qatar University, Doha P.O. Box 2713, Qatar;
| | - Hussein Eldassouki
- College of Kinesiology, University of Saskatchewan, Saskatoon, SK S7N 5B5, Canada;
| | | | - Muhammad Abdul-Ghani
- Division of Diabetes, University of Texas Health Science Center at San Antonio, Floyd Curl Drive, San Antonio, TX 7703, USA;
| | - Fatima Mraiche
- Department of Pharmaceutical Sciences, College of Pharmacy, QU Health, Qatar University, Doha P.O. Box 2713, Qatar; (A.-A.A.-S.); (R.E.); (M.M.); (M.R.); (D.A.-K.)
- Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, Doha P.O. Box 2713, Qatar
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20
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Augustine R, Zahid AA, Mraiche F, Alam K, Al Moustafa AE, Hasan A. Gelatin-methacryloyl hydrogel based in vitro blood-brain barrier model for studying breast cancer-associated brain metastasis. Pharm Dev Technol 2021; 26:490-500. [PMID: 33416013 DOI: 10.1080/10837450.2021.1872624] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Breast cancer is one of the leading causes of brain metastasis. Metastasis to the brain occurs if cancer cells manage to traverse the 'blood-brain barrier' (BBB), which is a barrier with a very tight junction (TJ) of endothelial cells between blood circulation and brain tissue. It is highly important to develop novel in vitro BBB models to investigate breast cancer metastasis to the brain to facilitate the screening of chemotherapeutic agents against it. We herein report the development of gelatin methacryloyl (GelMA) modified transwell insert based BBB model composed of endothelial and astrocyte cell layers for testing the efficacy of anti-metastatic agents against breast cancer metastasis to the brain. We characterized the developed model for the morphology and in vitro breast cancer cell migration. Furthermore, we investigated the effect of cisplatin, a widely used chemotherapeutic agent, on the migration of metastatic breast cancer cells using the model. Our results showed that breast cancer cells migrate across the developed BBB model. Cisplatin treatment inhibited the migration of cancer cells across the model. Findings of this study suggest that our BBB model can be used as a suitable tool to investigate breast cancer-associated brain metastasis and to identify suitable therapeutic agents against this.
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Affiliation(s)
- Robin Augustine
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, Doha, Qatar.,Biomedical Research Center (BRC), Qatar University, Doha, Qatar
| | - Alap Ali Zahid
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, Doha, Qatar.,Biomedical Research Center (BRC), Qatar University, Doha, Qatar
| | - Fatima Mraiche
- College of Pharmacy, QU Health, Qatar University, Doha, Qatar
| | - Khurshid Alam
- Department of Mechanical and Industrial Engineering, College of Engineering, Sultan Qaboos University, Sultanate of Oman
| | - Ala-Eddin Al Moustafa
- Biomedical Research Center (BRC), Qatar University, Doha, Qatar.,College of Medicine, QU Health, Qatar University, Doha, Qatar
| | - Anwarul Hasan
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, Doha, Qatar.,Biomedical Research Center (BRC), Qatar University, Doha, Qatar
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21
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Khan S, Hasan A, Attar F, Sharifi M, Siddique R, Mraiche F, Falahati M. Gold Nanoparticle-Based Platforms for Diagnosis and Treatment of Myocardial Infarction. ACS Biomater Sci Eng 2020; 6:6460-6477. [PMID: 33320615 DOI: 10.1021/acsbiomaterials.0c00955] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
In recent years, an increasing rate of mortality due to myocardial infarction (MI) has led to the development of nanobased platforms, especially gold nanoparticles (AuNPs), as promising nanomaterials for diagnosis and treatment of MI. These promising NPs have been used to develop different nanobiosensors, mainly optical sensors for early detection of biomarkers as well as biomimetic/bioinspired platforms for cardiac tissue engineering (CTE). Therefore, in this Review, we presented an overview on the potential application of AuNPs as optical (surface plasmon resonance, colorimetric, fluorescence, and chemiluminescence) nanobiosensors for early diagnosis and prognosis of MI. On the other hand, we discussed the potential application of AuNPs either alone or with other NPs/polymers as promising three-dimensional (3D) scaffolds to regulate the microenvironment and mimic the morphological and electrical features of cardiac cells for potential application in CTE. Furthermore, we presented the challenges and ongoing efforts associated with the application of AuNPs in the diagnosis and treatment of MI. In conclusion, this Review may provide outstanding information regarding the development of AuNP-based technology as a promising platform for current MI treatment approaches.
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Affiliation(s)
- Suliman Khan
- Department of Cerebrovascular Diseases, the Second Affiliated Hospital of Zhengzhou University, Jingba Road, NO.2, 450014 Zhengzhou, China
| | - Anwarul Hasan
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, Doha 2713, Qatar.,Biomedical Research Centre (BRC), Qatar University, Doha 2713, Qatar
| | - Farnoosh Attar
- Department of Food Toxicology, Research Center of Food Technology and Agricultural Products, Standard Research Institute (SRI), Karaj 14155-6139, Iran
| | - Majid Sharifi
- Department of Nanotechnology, Faculty of Advanced Sciences and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Rabeea Siddique
- Department of Cerebrovascular Diseases, the Second Affiliated Hospital of Zhengzhou University, Jingba Road, NO.2, 450014 Zhengzhou, China
| | | | - Mojtaba Falahati
- Department of Nanotechnology, Faculty of Advanced Sciences and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
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22
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Riaz S, Abdulrahman N, Uddin S, Jabeen A, Gadeau AP, Fliegel L, Mraiche F. Anti-hypertrophic effect of Na +/H + exchanger-1 inhibition is mediated by reduced cathepsin B. Eur J Pharmacol 2020; 888:173420. [PMID: 32781168 DOI: 10.1016/j.ejphar.2020.173420] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 07/24/2020] [Accepted: 07/24/2020] [Indexed: 12/20/2022]
Abstract
Previous studies have established the role of Na+/H+ exchanger isoform-1 (NHE1) and cathepsin B (Cat B) in the development of cardiomyocyte hypertrophy (CH). Both NHE1 and Cat B are activated under acidic conditions suggesting that their activities might be interrelated. The inhibition of NHE1 has been demonstrated to reduce cardiac hypertrophy but the mechanism that contributes to the anti-hypertrophic effect of NHE1 inhibition still remains unclear. H9c2 cardiomyoblasts were stimulated with Angiotensin (Ang) II in the presence and absence of N-[2-methyl-4,5-bis(methylsulphonyl)-benzoyl]-guanidine, hydrochloride (EMD, EMD 87580), an NHE1 inhibitor or CA-074Me, a Cat B inhibitor, and various cardiac hypertrophic parameters, namely cell surface area, protein content and atrial natriuretic peptide (ANP) mRNA were analyzed. EMD significantly suppressed markers of cardiomyocyte hypertrophy and inhibited Ang II stimulated Cat B protein and gene expression. Cat B is located within the acidic environment of lysosomes. Cat B proteases are released into the cytoplasm upon disintegration of the lysosomes. EMD or CA-074Me prevented the dispersal of the lysosomes induced by Ang II and reduced the ratio of LC3-II to LC3-I, a marker of autophagy. Moreover, Cat B protein expression and MMP-9 activity in the extracellular space were significantly attenuated in the presence of EMD or CA-074Me. Our study demonstrates a novel mechanism for attenuation of the hypertrophic phenotype by NHE1 inhibition that is mediated by a regression in Cat B. The inhibition of Cat B via EMD or CA-074Me attenuates the autosomal-lysosomal pathway and MMP-9 activation.
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Affiliation(s)
- Sadaf Riaz
- College of Pharmacy, QU Health, Qatar University, Doha, Qatar; Hamad Medical Corporation, Doha, Qatar
| | - Nabeel Abdulrahman
- College of Pharmacy, QU Health, Qatar University, Doha, Qatar; Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Shahab Uddin
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Ayesha Jabeen
- College of Pharmacy, QU Health, Qatar University, Doha, Qatar
| | | | | | - Fatima Mraiche
- College of Pharmacy, QU Health, Qatar University, Doha, Qatar.
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23
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Abdulrahman N, Siveen KS, Joseph JM, Osman A, Yalcin HC, Hasan A, Uddin S, Mraiche F. Inhibition of p90 ribosomal S6 kinase potentiates cisplatin activity in A549 human lung adenocarcinoma cells. J Pharm Pharmacol 2020; 72:1536-1545. [PMID: 32667058 DOI: 10.1111/jphp.13335] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 06/21/2020] [Indexed: 12/31/2022]
Abstract
OBJECTIVE Cisplatin is a standard treatment approach against lung adenocarcinoma. Resistance to cisplatin and the toxic side effects of cisplatin continue to remain a challenge. Combining drugs with different mechanisms is being investigated as a means to overcome these challenges. In ovarian cancer cells, the knockdown of RSK2 increased the sensitivity of cisplatin. RSK is a downstream mediator of the MAPK pathway that is responsible for cell survival, proliferation and migration. METHODS Our study examined the effect of cisplatin, BI-D1870 (RSK inhibitor) or their combination on cell migration, apoptosis, autophagy and cell cycle in A549 human lung adenocarcinoma cells. KEY FINDINGS The combination of cisplatin and BI-D1870 potentiated the antimigration rate, the activation of caspases-3 and was associated with a significant decrease in RSK1 and ERK expression when compared to cisplatin alone. The combination of cisplatin and BI-D1870 also resulted in the inhibition of LC3 II to LC3 I expression when compared to BI-D1870. The combination of cisplatin and BI-D1870 increased the number of cells in the G2/M-phase when compared to cisplatin alone. CONCLUSIONS These findings suggest that combining cisplatin with agents that target the RSK mediated cell survival pathway, may potentiate the cisplatin effect in lung adenocarcinoma.
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Affiliation(s)
- Nabeel Abdulrahman
- College of Pharmacy, QU Health, Qatar University, Doha, Qatar.,Translational Research Institute, Hamad Medical Corporation, Doha, Qatar
| | | | | | - Aisha Osman
- College of Pharmacy, QU Health, Qatar University, Doha, Qatar
| | - Huseyin C Yalcin
- Biomedical Research Center (BRC), Qatar University, Doha, Qatar.,Biomedical Sciences Program, College of Health Sciences, QU Health, Qatar University, Doha, Qatar
| | - Anwarul Hasan
- Biomedical Research Center (BRC), Qatar University, Doha, Qatar.,Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, Doha, Qatar
| | - Shahab Uddin
- Translational Research Institute, Hamad Medical Corporation, Doha, Qatar
| | - Fatima Mraiche
- College of Pharmacy, QU Health, Qatar University, Doha, Qatar
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24
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Abdelaziz Mohamed I, Gadeau AP, Hasan A, Abdulrahman N, Mraiche F. Osteopontin: A Promising Therapeutic Target in Cardiac Fibrosis. Cells 2019; 8:cells8121558. [PMID: 31816901 PMCID: PMC6952988 DOI: 10.3390/cells8121558] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 11/15/2019] [Accepted: 11/19/2019] [Indexed: 12/20/2022] Open
Abstract
Osteopontin (OPN) is recognized for its significant roles in both physiological and pathological processes. Initially, OPN was recognized as a cytokine with pro-inflammatory actions. More recently, OPN has emerged as a matricellular protein of the extracellular matrix (ECM). OPN is also known to be a substrate for proteolytic cleavage by several proteases that form an integral part of the ECM. In the adult heart under physiological conditions, basal levels of OPN are expressed. Increased expression of OPN has been correlated with the progression of cardiac remodeling and fibrosis to heart failure and the severity of the condition. The intricate process by which OPN mediates its effects include the coordination of intracellular signals necessary for the differentiation of fibroblasts into myofibroblasts, promoting angiogenesis, wound healing, and tissue regeneration. In this review, we discuss the role of OPN in contributing to the development of cardiac fibrosis and its suitability as a therapeutic target.
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Affiliation(s)
- Iman Abdelaziz Mohamed
- Visiting Scholar, Center of Excellence for Stem Cells and Regenerative Medicine (CESC), Zewail City of Science and Technology, 6th of October City, P.O. Box 12588 Giza Governorate, Egypt;
| | - Alain-Pierre Gadeau
- INSERM, Biology of Cardiovascular Disease, University of Bordeaux, U1034 Pessac, France;
| | - Anwarul Hasan
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, P.O. Box 2713 Doha, Qatar;
- Biomedical Research Center (BRC), Qatar University, P.O. Box 2713 Doha, Qatar
| | - Nabeel Abdulrahman
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, P.O. Box 3050 Doha, Qatar;
- Department of Pharmaceutical Sciences, College of Pharmacy, QU Health, Qatar University, P.O. Box 2713 Doha, Qatar
| | - Fatima Mraiche
- Department of Pharmaceutical Sciences, College of Pharmacy, QU Health, Qatar University, P.O. Box 2713 Doha, Qatar
- Correspondence:
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Bader L, Mahfouz A, Kasem M, Mohammed S, Alsaadi S, Abdelsamad O, Elenani R, Soaly E, Elzouki A, Rizk N, Khalifa S, Shahin MH, Cavallari LH, Mraiche F, Elewa H. The effect of genetic and nongenetic factors on warfarin dose variability in Qatari population. Pharmacogenomics J 2019; 20:277-284. [PMID: 31653973 DOI: 10.1038/s41397-019-0116-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2019] [Revised: 10/10/2019] [Accepted: 10/14/2019] [Indexed: 02/06/2023]
Abstract
The objective of this study is to estimate the prevalence of VKORC1, CYP2C9, and CYP4F2 genetic variants and their contribution to warfarin dose variability in Qataris. One hundred and fifty warfarin-treated Qatari patients on a stable dose and with a therapeutic INR for at least three consecutive clinic visits were recruited. Saliva samples were collected using Oragene DNA self-collection kit, followed by DNA purification and genotyping via TaqMan Real-Time-PCR assay. The population was stratified into derivation and validation cohorts for the dosing model. The minor allele frequency (MAF) of VKORC1 (-1639G>A) was A (0.47), while the MAF's for the CYP2C9*2 and *3 and CYP4F2*3 were T (0.12), C (0.04) and T (0.43), respectively. Carriers of at least one CYP2C9 decreased function allele (*2 or *3) required lower median (IQR) warfarin doses compared to noncarriers [24.5 (14.5) mg/week vs. 35 (21) mg/week, p < 0.001]. Similarly, carriers of each additional copy of (A) variant in VKORC1 (-1639G>A) led to reduction in warfarin dose requirement compared to noncarriers [21(7.5) vs. 31.5(18.7) vs. 43.7(15), p < 0.0001]. CYP4F2*3 polymorphism on the other hand was not associated with warfarin dose. Multivariate analysis on the derivation cohort (n = 104) showed that a dosing model consisting of hypertension (HTN), heart failure (HF), VKORC1 (-1639G>A), CYP2C9*2 & *3, and smoking could explain 39.2% of warfarin dose variability in Qataris (P < 0.001). In the validation cohort (n = 45), correlation between predicted and actual warfarin doses was moderate (Spearman's rho correlation coefficient = 0.711, p < 0.001). This study concluded that VKORC1 (-1639G>A), CYP2C9*2 & *3 are the most significant predictors of warfarin dose along with HTN, HF and smoking.
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26
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Ahmed R, Tariq M, Hussain M, Andleeb A, Masoud MS, Ali I, Mraiche F, Hasan A. Phenolic contents-based assessment of therapeutic potential of Syzygium cumini leaves extract. PLoS One 2019; 14:e0221318. [PMID: 31465475 PMCID: PMC6715210 DOI: 10.1371/journal.pone.0221318] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Accepted: 08/05/2019] [Indexed: 11/26/2022] Open
Abstract
Syzygium cumini (S. cumini) is an evergreen tropical plant that is well recognized for its therapeutic potential of common diseases. In this study, the therapeutic potential and biomedical application of S. cumini are assessed in vitro and in vivo to find its effectiveness for different complications. The methanolic crude extract of S. cumini leaves were screened for total phenolic and flavonoid content. In vitro, the DPPH scavenging assay, XTT assay, prothrombin and activated partial thromboplastin time were used to assess antioxidant, cytoprotective and thrombolytic activity of the S. cumini extract, respectively. The anti-inflammatory potential and the analgesic activity of the S. cumini extract were analyzed in rabbits by the Carrageenan induced paw edema method and the writhing method, respectively. Phytochemical analysis showed the presence of considerable amounts of total phenolic (369.75 ± 17.9 mg GAE/g) and flavonoid (75.8 ± 5.3 mgRE/g) content in the S. cumini extract. The DPPH assay demonstrated a higher antioxidant potential (IC-50 value of 133 μg/ml), which was comparable to the IC-50 of ascorbic acid (122.4 μg/ml). Moreover, the S. cumini extract showed a dose dependent cytoprotective effect against H2O2 treated bone marrow mesenchymal stem cells (BM-MSCs). S. cumini also possesses significant anticoagulant activity with a prothrombin time of 28.3 ± 1.8 seconds vs 15.8 ± 0.2 seconds of control, p<0.05. The leaf extract also demonstrated an analgesic effect in rabbits as indicated by the decrease in writhing (12.2 ± 1.7 control vs. 3.7 ± 0.6 treated) and anti-inflammatory activity in rabbits paw with a protection against inflammation of 64.1 ± 2.4%. Our findings suggest that the methanolic extract of S. cumini leaves has antioxidant, cytoprotective, anticoagulant, analgesic and anti-inflammatory properties, and therefore, can be applied for treating cardiovascular diseases and cancers.
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Affiliation(s)
- Rashid Ahmed
- Department of Biotechnology, Mirpur University of Science and Technology, Mirpur, AJK, Pakistan
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, Doha, Qatar
- Biomedical Research Centre, Qatar University, Doha, Qatar
| | - Muhammad Tariq
- Department of Biotechnology, Mirpur University of Science and Technology, Mirpur, AJK, Pakistan
- * E-mail: (MT); (AH)
| | - Maria Hussain
- Department of Biotechnology, Mirpur University of Science and Technology, Mirpur, AJK, Pakistan
| | - Anisa Andleeb
- Department of Biotechnology, Mirpur University of Science and Technology, Mirpur, AJK, Pakistan
| | - Muhammad Shareef Masoud
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Pakistan
| | - Imran Ali
- Department of Biotechnology, Mirpur University of Science and Technology, Mirpur, AJK, Pakistan
| | | | - Anwarul Hasan
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, Doha, Qatar
- Biomedical Research Centre, Qatar University, Doha, Qatar
- * E-mail: (MT); (AH)
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27
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Munusamy S, Osman A, Riaz S, Ali S, Mraiche F. The use of Socrative and Yammer online tools to promote interactive learning in pharmacy education. Curr Pharm Teach Learn 2019; 11:76-80. [PMID: 30527879 DOI: 10.1016/j.cptl.2018.09.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 08/10/2018] [Accepted: 09/22/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND AND PURPOSE Engagement of students in the didactic classroom setting restricts students' time spent towards active learning, which in turn, adversely affects the retention of concepts taught through traditional teaching methods. Thus, interactive learning is used as an alternative to engage students in the classroom and to enrich their learning experience. Integrating interactive learning activities has been shown to facilitate student learning and improve the learning outcomes. The objectives of this study are to assess the perceptions of students on the benefits and appropriateness of using online tools (e.g., Socrative and Yammer) to promote interaction of students with the instructor and other students in the classroom setting. EDUCATIONAL ACTIVITY AND SETTING Students enrolled in the second and third professional years of the bachelor of pharmacy program at Qatar University were introduced to various interactive learning tools in two Pharmaceutical Sciences courses. Students were then surveyed to assess their perceptions about the benefits and appropriateness of the respective interactive learning tools introduced in the courses. FINDINGS Our survey results indicate that the students are in favor of using online educational tools and believe that the use of interactive learning tools enhances their learning experience. SUMMARY Pharmacy students at Qatar University perceive that the incorporation of online technology in Pharmaceutical Sciences courses enhances interactive learning in the classroom setting.
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Affiliation(s)
- Shankar Munusamy
- College of Pharmacy and Health Sciences, Drake University, Des Moines, IA 50311, United States; College of Pharmacy, Qatar University, P.O. Box 2713, Doha, Qatar.
| | - Aisha Osman
- College of Pharmacy, Qatar University, P.O. Box 2713, Doha, Qatar.
| | - Sadaf Riaz
- College of Pharmacy, Qatar University, P.O. Box 2713, Doha, Qatar.
| | - Shaima Ali
- College of Pharmacy, Qatar University, P.O. Box 2713, Doha, Qatar.
| | - Fatima Mraiche
- College of Pharmacy, Qatar University, P.O. Box 2713, Doha, Qatar.
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28
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Khan AQ, Siveen KS, Prabhu KS, Kuttikrishnan S, Akhtar S, Shaar A, Raza A, Mraiche F, Dermime S, Uddin S. Curcumin-Mediated Degradation of S-Phase Kinase Protein 2 Induces Cytotoxic Effects in Human Papillomavirus-Positive and Negative Squamous Carcinoma Cells. Front Oncol 2018; 8:399. [PMID: 30333956 PMCID: PMC6176276 DOI: 10.3389/fonc.2018.00399] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 09/03/2018] [Indexed: 12/21/2022] Open
Abstract
S-phase kinase-associated protein2 (Skp2), a proto-oncoprotein, plays an important role in development and progression of human malignancies. Skp2 is frequently overexpressed in many human malignancies. It targets cell cycle progression through ubiquitin mediated degradation of G1-checkpoint CDK inhibitors-p21 (CDKN1A) and p27 (CDKN1B). We investigated the role of Skp2 and its ubiquitin-proteasome pathway in head and neck squamous cell carcinoma (HNSCC) using a panel of cell lines with and without human papillomavirus (HPV+, HPV-). Treatment of HNSCC cell lines with curcumin, a natural compound isolated from rhizomes of the plant Curcuma longa, or transfection of small interfering RNA of Skp2, causes down-regulation of Skp2 with concomitant accumulation of p21 and p27 in HPV+, HPV- cells. Furthermore curcumin inhibits cell viability and induces apoptosis in a dose-dependent manner. Treatment of HPV+ and HPV- cells with curcumin induced apoptosis via mitochondrial pathway and activation of caspases. In addition, treatment of HPV+ and HPV- cell lines with curcumin down-regulated the expression of XIAP, cIAP1, and cIAP2. Interestingly, co-treatment of HNSCC cells with curcumin and cisplatin potentiated inhibition of cell viability and apoptotic effects. Altogether, these data suggest an important function for curcumin, acting as a suppressor of oncoprotein Skp2 in squamous cell carcinoma cells in both HPV+ and HPV- cells; raise the possibility that this agent may have a future therapeutic role in squamous cell carcinoma.
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Affiliation(s)
- Abdul Q. Khan
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Kodappully S. Siveen
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Kirti S. Prabhu
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Shilpa Kuttikrishnan
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Sabah Akhtar
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Abdullah Shaar
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Afsheen Raza
- National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | | | - Said Dermime
- National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - Shahab Uddin
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
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29
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Kuttikrishnan S, Siveen KS, Prabhu KS, Khan AQ, Akhtar S, Mateo JM, Merhi M, Taha R, Omri HE, Mraiche F, Dermime S, Uddin S. Sanguinarine suppresses growth and induces apoptosis in childhood acute lymphoblastic leukemia. Leuk Lymphoma 2018; 60:782-794. [PMID: 30187808 DOI: 10.1080/10428194.2018.1494270] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Sanguinarine (Sang), a plant-derived compound isolated from the roots of Sanguinaria canadensis was evaluated for its potential pro-apoptotic effects in precursor B acute lymphoblastic leukemia (Pre-ALL) cell lines. Treatment of 697, REH, RS4;11, and SupB15 cell lines with Sang exhibited significant inhibition of cell viability via induction of apoptotic cell death. Sang-mediated apoptosis was found to be associated with the increased expression of proapoptotic bax with concomitant decrease of Bcl-2 expression leading to depolarization of mitochondria membrane resulting in loss of mitochondrial membrane potential (MMP). The reduced MMP caused the leakage in mitochondrial membrane and release of cytochrome c into the cytosol. The cytochrome c then mediates the activation of caspase-cascade and subsequently PARP cleavage. Furthermore, pretreatment with z-VAD-FMK, a pan-caspase inhibitor, abrogated Sang-induced inhibition of cell viability, induction of apoptosis. Sang treatment also reduced the phosphorylation of AKT and suppressed the expression of a number of anti-apoptotic genes such as cIAP1, cIAP2, and XIAP. Sang mediates its anti-cancer activity by generation of reactive oxygen species (ROS) due to depletion of glutathione level in leukemic cell lines. Pretreatment of these cells with N-acetyl cysteine (NAC) prevented Sang-induced depletion of glutathione level and mitochondrial-caspase-induced apoptosis. Finally, Sang treatment of Pre-ALL cell suppressed colony formation ability of these cells suggesting Sang has an anti-leukemic potential. Altogether, our data suggest that Sang is an efficient inducer of intrinsic apoptotic cell death via generation of ROS and exhibition of anti-leukemic effect in Pre-ALL cells raises the possibility to develop Sang as a therapeutic modality for the treatment and management of Pre-ALL.
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Affiliation(s)
- Shilpa Kuttikrishnan
- a Translational Research Institute , Academic Health System, Hamad Medical Corporation , Doha , Qatar
| | - Kodappully S Siveen
- a Translational Research Institute , Academic Health System, Hamad Medical Corporation , Doha , Qatar
| | - Kirti S Prabhu
- a Translational Research Institute , Academic Health System, Hamad Medical Corporation , Doha , Qatar
| | - Abdul Quaiyoom Khan
- a Translational Research Institute , Academic Health System, Hamad Medical Corporation , Doha , Qatar
| | - Sabah Akhtar
- a Translational Research Institute , Academic Health System, Hamad Medical Corporation , Doha , Qatar
| | - Jericha M Mateo
- a Translational Research Institute , Academic Health System, Hamad Medical Corporation , Doha , Qatar
| | - Maysaloun Merhi
- b National Centre for Cancer Care and Research , Hamad Medical Corporation , Doha , Qatar
| | - Ruba Taha
- b National Centre for Cancer Care and Research , Hamad Medical Corporation , Doha , Qatar
| | - Halima El Omri
- b National Centre for Cancer Care and Research , Hamad Medical Corporation , Doha , Qatar
| | | | - Said Dermime
- b National Centre for Cancer Care and Research , Hamad Medical Corporation , Doha , Qatar
| | - Shahab Uddin
- a Translational Research Institute , Academic Health System, Hamad Medical Corporation , Doha , Qatar
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Achkar IW, Abdulrahman N, Al-Sulaiti H, Joseph JM, Uddin S, Mraiche F. Cisplatin based therapy: the role of the mitogen activated protein kinase signaling pathway. J Transl Med 2018; 16:96. [PMID: 29642900 PMCID: PMC5896132 DOI: 10.1186/s12967-018-1471-1] [Citation(s) in RCA: 112] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 04/02/2018] [Indexed: 12/19/2022] Open
Abstract
Cisplatin is a widely used chemotherapeutic agent for treatment of various cancers. However, treatment with cisplatin is associated with drug resistance and several adverse side effects such as nephrotoxicity, reduced immunity towards infections and hearing loss. A Combination of cisplatin with other drugs is an approach to overcome drug resistance and reduce toxicity. The combination therapy also results in increased sensitivity of cisplatin towards cancer cells. The mitogen activated protein kinase (MAPK) pathway in the cell, consisting of extracellular signal regulated kinase, c-Jun N-terminal kinase, p38 kinases, and downstream mediator p90 ribosomal s6 kinase (RSK); is responsible for the regulation of various cellular events including cell survival, cell proliferation, cell cycle progression, cell migration and protein translation. This review article demonstrates the role of MAPK pathway in cisplatin based therapy, illustrates different combination therapy involving cisplatin and also shows the importance of targeting MAPK family, particularly RSK, to achieve increased anticancer effect and overcome drug resistance when combined with cisplatin.
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Affiliation(s)
- Iman W Achkar
- Translational Research Institute, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar
| | | | - Hend Al-Sulaiti
- College of Pharmacy, Qatar University, P.O. Box 2713, Doha, Qatar
| | | | - Shahab Uddin
- Translational Research Institute, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar
| | - Fatima Mraiche
- College of Pharmacy, Qatar University, P.O. Box 2713, Doha, Qatar.
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Wilby KJ, El Hajj MS, El-Bashir M, Mraiche F. Overcoming pitfalls: Results from a mandatory peer review process for written examinations. Curr Pharm Teach Learn 2018; 10:423-426. [PMID: 29793702 DOI: 10.1016/j.cptl.2017.12.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 09/11/2017] [Accepted: 12/24/2017] [Indexed: 06/08/2023]
Abstract
PROBLEM DESCRIPTION Written assessments are essential components of higher education practices. However, faculty members encounter common pitfalls when designing questions intended to evaluate student-learning outcomes. The objective of this project was to determine the impact of a mandatory examination peer review process on question accuracy, alignment with learning objectives, use of best practices in question design, and language/grammar. QUALITY IMPROVEMENT METHODS A mandatory peer review process was implemented for all midterm (before phase) and final (after phase) examinations. Peer review occurred by two reviewers and followed a pre-defined guidance document. Non-punitive feedback given to faculty members served as the intervention. Frequencies of flagged questions according to guidance categories were compared between phases. RESULTS OF CQI INQUIRY A total of 21 midterm and 21 final exam reviews were included in the analysis. A total of 637 questions were reviewed across all midterms and 1003 questions were reviewed across all finals. Few questions were flagged for accuracy and alignment with learning outcomes. The median total proportion of questions flagged for best practices was significantly lower for final exams versus midterm exams (15.8 vs. 6.45%, p = 0.014). The intervention did not influence language and grammar errors (9.68 vs. 10.0% of questions flagged before and after, respectively, p = 0.305). CONCLUSIONS A non-punitive peer review process for written examinations can overcome pitfalls in exam creation and improve best practices in question writing. The peer-review process had a substantial effect at flagging language/grammar errors but error rate did not differ between midterm and final exams.
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Affiliation(s)
- Kyle John Wilby
- College of Pharmacy, Qatar University, PO Box 2713, Doha, Qatar.
| | - Maguy S El Hajj
- College of Pharmacy, Qatar University, PO Box 2713, Doha, Qatar.
| | - Marwa El-Bashir
- College of Pharmacy, Qatar University, PO Box 2713, Doha, Qatar.
| | - Fatima Mraiche
- College of Pharmacy, Qatar University, PO Box 2713, Doha, Qatar.
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Mraiche F, Riaz S. P302Cathepsin B induced cardiomyocyte hypertrophy requires activation of the Na+/H+ exchanger isoform-1. Cardiovasc Res 2018. [DOI: 10.1093/cvr/cvy060.219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- F Mraiche
- Qatar University, College of Pharmacy, Department of Pharmaceutical Sciences, Doha, Qatar
| | - S Riaz
- Qatar University, College of Pharmacy, Department of Pharmaceutical Sciences, Doha, Qatar
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Abdulrahman N, Jaspard-Vinassa B, Fliegel L, Jabeen A, Riaz S, Gadeau AP, Mraiche F. Na +/H + exchanger isoform 1-induced osteopontin expression facilitates cardiac hypertrophy through p90 ribosomal S6 kinase. Physiol Genomics 2018; 50:332-342. [PMID: 29473817 DOI: 10.1152/physiolgenomics.00133.2017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Cardiovascular diseases are the leading cause of death worldwide. One in three cases of heart failure is due to dilated cardiomyopathy. The Na+/H+ exchanger isoform 1 (NHE1), a multifunctional protein and the key pH regulator in the heart, has been demonstrated to be increased in this condition. We have previously demonstrated that elevated NHE1 activity induced cardiac hypertrophy in vivo. Furthermore, the overexpression of active NHE1 elicited modulation of gene expression in cardiomyocytes including an upregulation of myocardial osteopontin (OPN) expression. To determine the role of OPN in inducing NHE1-mediated cardiomyocyte hypertrophy, double transgenic mice expressing active NHE1 and OPN knockout were generated and assessed by echocardiography and the cardiac phenotype. Our studies showed that hearts expressing active NHE1 exhibited cardiac remodeling indicated by increased systolic and diastolic left ventricular internal diameter and increased ventricular volume. Moreover, these hearts demonstrated impaired function with decreased fractional shortening and ejection fraction. Atrial natriuretic peptide (ANP) and brain natriuretic peptide (BNP) mRNA was upregulated, and there was an increase in heart cell cross-sectional area confirming the cardiac hypertrophic effect. Moreover, NHE1 transgenic mice also showed increased collagen deposition, upregulation of CD44 and phosphorylation of p90 ribosomal s6 kinase (RSK), effects that were regressed in OPN knockout mice. In conclusion, we developed an interesting comparative model of active NHE1 transgenic mouse lines which express a dilated hypertrophic phenotype expressing CD44 and phosphorylated RSK, effects which were regressed in absence of OPN.
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Affiliation(s)
| | | | - Larry Fliegel
- Department of Biochemistry, Faculty of Medicine and Dentistry, University of Alberta , Edmonton, Alberta , Canada
| | | | - Sadaf Riaz
- College of Pharmacy, Qatar University , Doha , Qatar
| | - Alain-Pierre Gadeau
- University of Bordeaux, INSERM, Biology of Cardiovascular Disease, U1034, Pessac , France
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Abstract
Sanguinarine (Sang) - a benzophenanthridine alkaloid extracted from Sanguinaria canadensis - exhibits antioxidant, anti-inflammatory, proapoptotic and growth inhibitory activities on tumor cells of various cancer types as established by in vivo and in vitro studies. Although the underlying mechanism of Sang antitumor activity is yet to be fully elucidated, Sang has displayed multiple biological effects, which remain to suggest its possible use in plant-derived treatments of human malignancies. This review covers the anticancer abilities of Sang including inhibition of aberrantly activated signal transduction pathways, induction of cell death and inhibition of cancer cell proliferation. It also highlights Sang-mediated inhibition of angiogenesis, inducing the expression of tumor suppressors, sensitization of cancer cells to standard chemotherapeutics to enhance their cytotoxic effects, while addressing the present need for further pharmacokinetic-based studies.
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Affiliation(s)
- Iman W Achkar
- Translational Research Institute, Hamad Medical Corporation, Doha, Qatar
| | | | - Ramzi M Mohammad
- Translational Research Institute, Hamad Medical Corporation, Doha, Qatar
| | - Shahab Uddin
- Translational Research Institute, Hamad Medical Corporation, Doha, Qatar
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Abstract
Cardiac hypertrophy (CH), characterized by the enlargement of cardiomyocytes, fibrosis and apoptosis, is one of the leading causes of death worldwide. Despite the advances in cardiovascular research, there remains a need to further investigate the signaling pathways that mediate CH in order to identify novel therapeutic targets. One of the hallmarks of CH is the remodeling of the extracellular matrix (ECM). Multiple studies have shown an important role of cysteine proteases and matrix metalloproteinases (MMPs) in the remodeled heart. This review focuses on the role of cysteine cathepins and MMPs in cardiac remodeling.
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Affiliation(s)
- Sadaf Riaz
- College of Pharmacy, Qatar University, Doha, Qatar
| | - Asad Zeidan
- Faculty of Medicine, Department of Anatomy, Cell Biology and Physiology, American University of Beirut, Beirut, Lebanon
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Abdulrahman N, Jaballah M, Poomakkoth N, Riaz S, Abdelaziz S, Issa A, Mraiche F. Inhibition of p90 ribosomal S6 kinase attenuates cell migration and proliferation of the human lung adenocarcinoma through phospho-GSK-3β and osteopontin. Mol Cell Biochem 2016; 418:21-9. [PMID: 27236820 DOI: 10.1007/s11010-016-2727-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 05/20/2016] [Indexed: 12/20/2022]
Abstract
p90 ribosomal S6 kinase (p90RSK) constitutes a family of serine/threonine kinases that have been shown to be involved in cell proliferation of various malignancies via direct or indirect effects on the cell-cycle machinery. We investigated the role of p90RSK in lung adenocarcinomas and whether the inhibition of p90RSK diminishes cancer progression. Moreover, we investigated the involvement of glycogen synthase kinase-3β (GSK-3β) and osteopontin (OPN) in the p90RSK-induced lung adenocarcinoma progression. p90RSK, OPN, and GSK-3β protein expressions were examined in the A549 human lung adenocarcinoma cell line in the presence and absence of BI-D1870 (BID), a p90RSK inhibitor. Gene expression of anti-apoptotic and pro-apoptotic markers namely Bcl2 and Bax, respectively, were studied by reverse transcription polymerase chain reaction. In addition, the A549 lung adenocarcinoma cell line was characterized for cell proliferation using the MTT assay and cell migration using the scratch migration assay. Our study revealed that total RSK1 protein expression is over expressed in the A549 human lung adenocarcinoma cell line, an effect which is significantly reduced upon pretreatment with BID (69.32 ± 12.41 % of control; P < 0.05). The inhibition of p90RSK also showed a significant suppression of cell proliferation (54.3 ± 6.73 % of control; P < 0.01) and cell migration (187.90 ± 16.10 % of control; P < 0.01). Treatment of the A549 cells with BID regressed the expression of Bcl2 mRNA (56.92 ± 6.07 % of control; P < 0.01). BID also regressed protein expression of OPN (79.57 ± 5.32 % of control; P < 0.05) and phospho-GSK-3β (73.04 ± 8.95 % of control; P < 0.05). The p90RSK has an essential role in promoting tumor growth and proliferation in non-small cell lung cancer (NSCLC). BID may serve as an alternative cancer treatment in NSCLC.
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Affiliation(s)
| | - Maiy Jaballah
- College of Pharmacy, Qatar University, P.O. Box 2713, Doha, Qatar
| | | | - Sadaf Riaz
- College of Pharmacy, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Somaia Abdelaziz
- College of Pharmacy, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Aya Issa
- College of Pharmacy, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Fatima Mraiche
- College of Pharmacy, Qatar University, P.O. Box 2713, Doha, Qatar.
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Poomakkoth N, Issa A, Abdulrahman N, Abdelaziz SG, Mraiche F. p90 ribosomal S6 kinase: a potential therapeutic target in lung cancer. J Transl Med 2016; 14:14. [PMID: 26791782 PMCID: PMC4721001 DOI: 10.1186/s12967-016-0768-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Accepted: 12/20/2015] [Indexed: 01/01/2023] Open
Abstract
A global survey of cancer has shown that lung cancer is the most common cause of the new cancer cases and cancer deaths in men worldwide. The mortality from lung cancer is more than the combined mortality from breast, prostate and colorectal cancers. The two major histological types of lung cancer are non-small cell lung cancer (NSCLC) accounting for about 85 % of cases and small cell lung cancer accounting for 15 % of cases. NSCLC, the more prevalent form of lung cancer, is often diagnosed at an advanced stage and has a very poor prognosis. Many factors have been shown to contribute to the development of lung cancer in humans including tobacco smoking, exposure to environmental carcinogens (asbestos, or radon) and genetic factors. Despite the advances in treatment, lung cancer remains one of the leading causes of cancer death worldwide. Interestingly, the overall 5 year survival from lung cancer has not changed appreciably in the past 25 years. For this reason, novel and more effective treatments and strategies for NSCLC are critically needed. p90 ribosomal S6 kinase (RSK), a serine threonine kinase that lies downstream of the Ras–MAPK (mitogen activated protein kinase) cascade, has been demonstrated to be involved in the regulation of cell proliferation in various malignancies through indirect (e.g., modulation of transcription factors) or direct effects on the cell-cycle machinery. Increased expression of RSK has been demonstrated in various cancers, including lung cancer. This review focuses on the role of RSK in lung cancer and its potential therapeutic application.
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Affiliation(s)
| | - Aya Issa
- College of Pharmacy, Qatar University, P.O. Box 2713, Doha, Qatar.
| | | | | | - Fatima Mraiche
- College of Pharmacy, Qatar University, P.O. Box 2713, Doha, Qatar.
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Mohamed IA, Mraiche F. Targeting osteopontin, the silent partner of Na+/H+ exchanger isoform 1 in cardiac remodeling. J Cell Physiol 2015; 230:2006-18. [PMID: 25677682 DOI: 10.1002/jcp.24958] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Accepted: 02/06/2015] [Indexed: 12/11/2022]
Abstract
Cardiac hypertrophy (CH), characterized by the enlargement of cardiomyocytes, fibrosis and apoptosis, contributes to cardiac remodeling, which if left unresolved results in heart failure. Understanding the signaling pathways underlying CH is necessary to identify potential therapeutic targets. The Na(+) /H(+) -exchanger isoform I (NHE1), a ubiquitously expressed glycoprotein and cardiac specific isoform, regulates intracellular pH. Recent studies have demonstrated that enhanced expression/activity of NHE1 contributes to cardiac remodeling and CH. Inhibition of NHE1 in both in vitro and in vivo models have suggested that inhibition of NHE1 protects against hypertrophy. However, clinical trials using NHE1 inhibitors have proven to be unsuccessful, suggesting that additional factors maybe contributing to cardiac remodeling. Recent studies have indicated that the upregulation of NHE1 is associated with enhanced levels of osteopontin (OPN) in the setting of CH. OPN has been demonstrated to be upregulated in left ventricular hypertrophy, dilated cardiomyopathy and in diabetic cardiomyopathy. The cellular interplay between OPN and NHE1 in the setting of CH remains unknown. This review focuses on the role of NHE1 and OPN in cardiac remodeling and emphasizes the signaling pathways implicating OPN in the NHE1-induced hypertrophic response.
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Mohamed IA, Gadeau AP, Fliegel L, Lopaschuk G, Mlih M, Abdulrahman N, Fillmore N, Mraiche F. Na+/H+ exchanger isoform 1-induced osteopontin expression facilitates cardiomyocyte hypertrophy. PLoS One 2015; 10:e0123318. [PMID: 25884410 PMCID: PMC4401699 DOI: 10.1371/journal.pone.0123318] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Accepted: 03/02/2015] [Indexed: 01/02/2023] Open
Abstract
Enhanced expression and activity of the Na+/H+ exchanger isoform 1 (NHE1) has been implicated in cardiomyocyte hypertrophy in various experimental models. The upregulation of NHE1 was correlated with an increase in osteopontin (OPN) expression in models of cardiac hypertrophy (CH), and the mechanism for this remains to be delineated. To determine whether the expression of active NHE1-induces OPN and contributes to the hypertrophic response in vitro, cardiomyocytes were infected with the active form of the NHE1 adenovirus or transfected with OPN silencing RNA (siRNA-OPN) and characterized for cardiomyocyte hypertrophy. Expression of NHE1 in cardiomyocytes resulted in a significant increase in cardiomyocyte hypertrophy markers: cell surface area, protein content, ANP mRNA and expression of phosphorylated-GATA4. NHE1 activity was also significantly increased in cardiomyocytes expressing active NHE1. Interestingly, transfection of cardiomyocytes with siRNA-OPN significantly abolished the NHE1-induced cardiomyocyte hypertrophy. siRNA-OPN also significantly reduced the activity of NHE1 in cardiomyocytes expressing NHE1 (68.5±0.24%; P<0.05), confirming the role of OPN in the NHE1-induced hypertrophic response. The hypertrophic response facilitated by NHE1-induced OPN occurred independent of the extracellular-signal-regulated kinases and Akt, but required p90-ribosomal S6 kinase (RSK). The ability of OPN to facilitate the NHE1-induced hypertrophic response identifies OPN as a potential therapeutic target to reverse the hypertrophic effect induced by the expression of active NHE1.
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Affiliation(s)
| | - Alain-Pierre Gadeau
- University of Bordeaux, Adaptation Cardiovasculaire à L'ischémie, UMR1034, Pessac, France
| | - Larry Fliegel
- Department of Biochemistry, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Gary Lopaschuk
- Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada
| | - Mohamed Mlih
- College of Pharmacy, Qatar University, Doha, Qatar
| | | | - Natasha Fillmore
- Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada
| | - Fatima Mraiche
- College of Pharmacy, Qatar University, Doha, Qatar
- * E-mail:
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Mlih M, Abdulrahman N, Gadeau AP, Mohamed IA, Jaballah M, Mraiche F. Na(+)/H (+) exchanger isoform 1 induced osteopontin expression in cardiomyocytes involves NFAT3/Gata4. Mol Cell Biochem 2015; 404:211-20. [PMID: 25758355 DOI: 10.1007/s11010-015-2380-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Accepted: 03/05/2015] [Indexed: 12/31/2022]
Abstract
Osteopontin (OPN), a multifunctional glycophosphoprotein, has been reported to contribute to the development and progression of cardiac remodeling and hypertrophy. Cardiac-specific OPN knockout mice were protected against hypertrophy and fibrosis mediated by Ang II. Recently, transgenic mice expressing the active form of the Na(+)/H(+) exchanger isoform 1 (NHE1) developed spontaneous hypertrophy in association with elevated levels of OPN. The mechanism by which active NHE1 induces OPN expression and contributes to the hypertrophic response remains unclear. To validate whether expression of the active form of NHE1 induces OPN, cardiomyocytes were stimulated with Ang II, a known inducer of both OPN and NHE1. Ang II induced hypertrophy and increased OPN protein expression (151.6 ± 28.19 %, P < 0.01) and NHE1 activity in H9c2 cardiomyoblasts. Ang II-induced hypertrophy and OPN protein expression were regressed in the presence of an NHE1 inhibitor, EMD 87580, or a calcineurin inhibitor, FK506. In addition, our results indicated that activation of NHE1-induced NFAT3 translocation into the nucleus and a significant activation of the transcription factor Gata4 (NHE1: 149 ± 28 % of control, P < 0.05). NHE1-induced activation of Gata4 was inhibited by FK506. In summary, our results suggest that activation of NHE1 induces hypertrophy through the activation of NFAT3/Gata4 and OPN expression.
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Affiliation(s)
- Mohamed Mlih
- College of Pharmacy, Qatar University, P.O. Box 2713, Doha, Qatar
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Jaballah MY, Elmarayat BF, Alsulaiti FS, Mraiche F. P129p90 Ribosomal S6 Kinase contributes to NHE1 induced cardiomyocyte hypertrophy. Cardiovasc Res 2014. [DOI: 10.1093/cvr/cvu082.69] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Mraiche F, Alasmar AR, Al Marridi WZ, Youssef M. The effect of EMD 87580, an Na+/H+ isoform 1 inhibitor, on the rate of cell proliferation in mouse lung adenocarcinoma cells. FASEB J 2013. [DOI: 10.1096/fasebj.27.1_supplement.lb580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Mraiche F, Fliegel L. Abstract 367: Exercising Exacerbates the Hypertrophic Response of Female Transgenic Mice Expressing Elevated Myocardial Na
+
/H
+
Exchanger Isoform 1. Circ Res 2012. [DOI: 10.1161/res.111.suppl_1.a367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Cardiac hypertrophy (CH) is heart growth in response to environmental demands, and a variety of hormonal, paracrine and autocrine stimuli. It is a means to reduce stress on the ventricular wall. The Na+/H+ exchanger isoform 1 (NHE1) has been implicated in the development and progression of CH. To better understand the involvement of NHE1, male and female transgenic mice that express cardiac specific active NHE1 expression were studied. N-line mice expressed wild-type NHE1, and K-line mice expressed activated NHE1. NHE activity of adult ventricular cardiomyocytes and protein expression were elevated by approximately 2 and 3-fold in the N- and K-line mice vs. control. The K-line female mice assessed by echocardiography demonstrated significant global cardiac dysfunction. Left ventricular fractional cell shortening and ejection fraction were significantly decreased in the K-line mice (23.1 ± 3.8% and 45.2 ± 6.9% K-line vs. 36.5 ± 1.1% and 66.4 ± 1.5% control, respectively; p<0.05). The K-line female mice also exhibit myocardial remodeling. The heart weight to body weight ratio was significantly greater in the K-line mice (143 ± 10.0% of control; P<0.05). Cross sectional area (K-line 195.6 ± 16.4% of control; p<0.05) and interstitial fibrosis (K-line: 275.4 ± 11.6% of control; p<0.05) were also elevated. Increased expression of active NHE1 protein in male mice was also much more detrimental than expression of the wild type protein as was seen with the female transgenic mice. Therefore, the NHE1 induced hypertrophic effect was not gender dependent. However, NHE1 expression induced gender specific differences with exercise. Exercising exaggerated the HW/BW ratio in female mice expressing activated NHE1 compared to males. These results suggest that gender specific activation of NHE1 may be critical in promoting hypertrophy in females in comparison with males.
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Mraiche F, Oka T, Gan XT, Karmazyn M, Fliegel L. Activated NHE1 is required to induce early cardiac hypertrophy in mice. Basic Res Cardiol 2011; 106:603-16. [PMID: 21359875 DOI: 10.1007/s00395-011-0161-4] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2010] [Revised: 12/07/2010] [Accepted: 12/13/2010] [Indexed: 01/13/2023]
Abstract
The Na+/H+ exchanger isoform 1 (NHE1) has been implicated as being causal in cardiac hypertrophy and the protein level and activity are elevated in the diseased myocardium. However, it is unclear whether mere elevation of the protein is sufficient for cardiac pathology, or whether activation of the protein is required. In this study, we examined the comparative effects of elevation of wild type and activated NHE1. Two mouse transgenic models that expressed either a wild type NHE1 protein or an activated NHE1 protein were characterized. Expression of activated NHE1 caused significant increases in heart weight to body weight, apoptosis, cross-sectional area, interstitial fibrosis and decreased cardiac performance. Expression of wild type NHE1 caused a much milder pathology. When we examined 2 or 10-week-old mouse hearts, there was neither elevation of calcineurin levels nor increased phosphorylation of ERK or p38 in either NHE1 transgenic mouse line. Expression of activated NHE1 in intact mice caused an increased sensitivity to phenylephrine-induced hypertrophy. Our results show that expression of activated NHE1 promotes cardiac hypertrophy to a much greater degree than elevated levels of wild type NHE1 alone. In addition, expression of activated NHE1 promotes greater sensitivity to neurohormonal stimulation. The results suggest that activation of NHE1 is a key component that accentuates NHE1-induced myocardial pathology.
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Affiliation(s)
- Fatima Mraiche
- Department of Biochemistry, University of Alberta, Edmonton, AB, Canada
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Mraiche F, Wagg CS, Lopaschuk GD, Fliegel L. Elevated levels of activated NHE1 protect the myocardium and improve metabolism following ischemia/reperfusion injury. J Mol Cell Cardiol 2010; 50:157-64. [PMID: 20974148 DOI: 10.1016/j.yjmcc.2010.10.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2010] [Revised: 10/01/2010] [Accepted: 10/16/2010] [Indexed: 01/25/2023]
Abstract
In the myocardium, the Na(+)/H(+) exchanger isoform 1 (NHE1) is a plasma membrane protein that regulates intracellular pH. Inhibition of NHE1 activity has been shown to be beneficial in cardiovascular disease. However, recent reports have suggested that elevation of NHE1 levels has beneficial effects in hearts subjected to ischemia/reperfusion. We determined if activated and non-activated NHE1 proteins have varying cardioprotective and metabolic effects with ischemia/reperfusion in the isolated perfused working mouse heart. We used transgenic mice hearts that specifically expressed wild type NHE1 (N-line) or activated NHE1 protein (K-line). Intact hearts 10-12 weeks of age were perfused under working conditions, with fatty acids and glucose present as substrates. Hearts were subjected to 30 min of aerobic perfusion, followed by 20 min of global no-flow ischemia and 40 min of aerobic reperfusion. We examined changes in contractility and substrate use and ATP levels. K-line hearts expressing activated NHE1, recovered to a much greater extent than N-line and control hearts recovering almost 75% of their preischemic function. In addition, K-line hearts had elevated fatty acid oxidation, increased glycolysis rates and elevated ATP levels relative to N-line mice or controls. An examination of kinase activation showed that there were no differences between controls and transgenics in ERK, p38, p90(rsk) or pGSK3β levels. The results demonstrate that elevated levels of NHE1 induce cardioprotection and alter cardiac metabolism. However, in the working heart model, with glucose and fatty acid as substrates, this required an activated NHE1 protein.
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Affiliation(s)
- Fatima Mraiche
- Department of Pediatrics, University of Alberta, Edmonton, AB T6G 2H7, Canada
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Xue J, Mraiche F, Zhou D, Karmazyn M, Oka T, Fliegel L, Haddad GG. Elevated myocardial Na+/H+ exchanger isoform 1 activity elicits gene expression that leads to cardiac hypertrophy. Physiol Genomics 2010; 42:374-83. [PMID: 20460605 DOI: 10.1152/physiolgenomics.00064.2010] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
In myocardial disease, elevated expression and activity of Na(+)/H(+) exchanger isoform 1 (NHE1) are detrimental. To better understand the involvement of NHE1, transgenic mice with elevated heart-specific NHE1 expression were studied. N-line mice expressed wild-type NHE1, and K-line mice expressed activated NHE1. Cardiac morphology, interstitial fibrosis, and cardiac function were examined by histological staining and echocardiography. Differences in gene expression between the N-line or K-line and nontransgenic littermates were probed with genechip analysis. We found that NHE1 K-line (but not N-line) hearts developed hypertrophy, including elevated heart weight-to-body weight ratio and increased cross-sectional area of the cardiomyocytes, interstitial fibrosis, as well as depressed cardiac function. N-line hearts had modest changes in gene expression (50 upregulations and 99 downregulations, P < 0.05), whereas K-line hearts had a very strong transcriptional response (640 upregulations and 677 downregulations, P < 0.05). In addition, the magnitude of expression alterations was much higher in K-line than N-line mice. The most significant changes in gene expression were involved in cardiac hypertrophy, cardiac necrosis/cell death, and cardiac infarction. Secreted phosphoprotein 1 and its signaling pathways were upregulated while peroxisome proliferator-activated receptor gamma signaling was downregulated in K-line mice. Our study shows that expression of activated NHE1 elicits specific pathways of gene activation in the myocardium that lead to cardiac hypertrophy, cell death, and infarction.
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Affiliation(s)
- Jin Xue
- Department of Pediatrics, University of California San Diego, La Jolla, California 92093-0735, USA
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47
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Baczkó I, Mraiche F, Light PE, Fliegel L. Diastolic calcium is elevated in metabolic recovery of cardiomyocytes expressing elevated levels of the Na+/H+ exchanger. Can J Physiol Pharmacol 2008; 86:850-9. [DOI: 10.1139/y08-092] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In the myocardium, the Na+/H+ exchanger isoform 1 (NHE1) plays a pivotal role in mediating ischemia–reperfusion (I/R) injury by causing intracellular Na+ accumulation that results in a subsequent increase in intracellular calcium (Ca2+ overload). One of the major clinical correlates of I/R injury is contractile dysfunction, in which Ca2+ overload via increased Na+/Ca2+ exchange is a major contributor. To better understand the cellular role of NHE1 during I/R injury, contractile function and calcium transients were measured during metabolic inhibition and recovery in single ventricular myocytes from transgenic mice with elevated NHE1 expression. During normoxic conditions, no differences were seen between NHE1-overexpressing cardiomyocytes and wild-type (WT) cardiomyocytes with respect to fractional cell shortening (FCS), rate of shortening (+dL/dt), and rate of relaxation (–dL/dt). When metabolic recovery followed metabolic inhibition, NHE1-overexpressing ventricular myocytes exhibited a significant increase in FCS (130.2% ± 11.77% baseline) and ±dL/dt (146.93% ± 12.27% baseline). This correlated with a significant increase in the concentration of diastolic intracellular calcium, which was attenuated by the NHE1 inhibitor HOE694. These results indicate that in normoxic conditions, elevated NHE1 expression does not alter contractile function. During metabolic recovery, however, elevated NHE1 expression increased diastolic Ca2+ loading that led to augmented cell contractility.
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Affiliation(s)
- István Baczkó
- Department of Pharmacology, University of Alberta, Edmonton, Alberta, Canada
- Department of Biochemistry, University of Alberta, 347 Medical Sciences Building, Edmonton, AB T6G 2H7, Canada
| | - Fatima Mraiche
- Department of Pharmacology, University of Alberta, Edmonton, Alberta, Canada
- Department of Biochemistry, University of Alberta, 347 Medical Sciences Building, Edmonton, AB T6G 2H7, Canada
| | - Peter E. Light
- Department of Pharmacology, University of Alberta, Edmonton, Alberta, Canada
- Department of Biochemistry, University of Alberta, 347 Medical Sciences Building, Edmonton, AB T6G 2H7, Canada
| | - Larry Fliegel
- Department of Pharmacology, University of Alberta, Edmonton, Alberta, Canada
- Department of Biochemistry, University of Alberta, 347 Medical Sciences Building, Edmonton, AB T6G 2H7, Canada
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Mraiche F, Gan T, Karmazyn M, Fliegel L. Na+/H+ exchanger over-expressing mice exhibit hypertrophy and elevated response to phenylephrine. J Mol Cell Cardiol 2007. [DOI: 10.1016/j.yjmcc.2007.03.384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Abstract
In the myocardium, the Na+/H+exchanger isoform-1 (NHE1) activity is detrimental during ischemia-reperfusion (I/R) injury, causing increased intracellular Na+(Nai+) accumulation that results in subsequent Ca2+overload. We tested the hypothesis that increased expression of NHE1 would accentuate myocardial I/R injury. Transgenic mice were created that increased the Na+/H+exchanger activity specifically in the myocardium. Intact hearts from transgenic mice at 10–15 wk of age showed no change in heart performance, resting intracellular pH (pHi) or phosphocreatine/ATP levels. Transgenic and wild-type (WT) hearts were subjected to 20 min of ischemia followed by 40 min of reperfusion. Surprisingly, the percent recovery of rate-pressure product (%RPP) after I/R improved in NHE1-overexpressing hearts (64 ± 5% vs. 41 ± 5% in WT; P < 0.05). In addition, NMR spectroscopy revealed that NHE1 overexpressor hearts contained higher ATP during early reperfusion (levels P < 0.05), and there was no difference in Na+accumulation during I/R between transgenic and WT hearts. HOE642 (cariporide), an NHE1 inhibitor, equivalently protected both WT and NHE1-overexpressing hearts. When hearts were perfused with bicarbonate-free HEPES buffer to eliminate the contribution of HCO3−transporters to pHiregulation, there was no difference in contractile recovery after reperfusion between controls and transgenics, but NHE1-overexpressing hearts showed a greater decrease in ATP during ischemia. These results indicate that the basal activity of NHE1 is not rate limiting in causing damage during I/R, therefore, increasing the level of NHE1 does not enhance injury and can have some small protective effects.
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Affiliation(s)
- Kenichi Imahashi
- Laboratory of Signal Transduction, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina, USA
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Coccaro E, Mraiche F, Malo M, Vandertol-Vanier H, Bullis B, Robertson M, Fliegel L. Expression and characterization of the Na+/H+ exchanger in the mammalian myocardium. Mol Cell Biochem 2007; 302:145-55. [PMID: 17431747 DOI: 10.1007/s11010-007-9436-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2006] [Accepted: 02/20/2007] [Indexed: 10/23/2022]
Abstract
We examined two expression systems for studying the Na(+)/H(+) exchanger in the mammalian myocardium. Mammalian NHE1 with a hemagglutinin (HA) tag and was cloned behind the alpha myosin heavy chain promoter. Transgenic mice were made with wild type NHE1 protein or with a hyperactive NHE1 protein mutated at the calmodulin-binding domain. Three lines of transgenic mice were made of each cDNA with expression levels of each type varying from high to low. Higher levels and activity of the Na(+)/H(+) exchanger were associated with decreased long-term survival of mice, and with dilated or hypertrophic cardiomyopathy. The exogenous NHE1 protein was present in freshly made cardiomyocytes from transgenic mice, however, expression from the alpha myosin heavy chain promoter declined rapidly and little exogenous NHE1 was apparent on the fourth day after cardiomyocyte isolation. To express NHE1 protein in isolated cardiomyocytes, we transferred a mutated form of the protein into an adenoviral expression system. Infection of neonatal rat cardiomyocytes resulted in robust expression of the exogenous NHE1 protein. The mutant form of the NHE1 protein could be distinguished from the endogenous Na(+)/H(+) exchanger by its resistance to inhibition by amiloride analogs. Our results suggest that for in vivo studies on intact hearts and animals, expression in transgenic mice is an appropriate system, however for long-term studies on cardiomyocytes, this model is inappropriate due to waning expression from the alpha myosin heavy chain promoter. Therefore, infection by adenovirus is a superior system for long-term studies on cardiomyocytes in culture.
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Affiliation(s)
- Ersilia Coccaro
- Department of Biochemistry, University of Alberta, 347 Medical Sciences Building, T6G 2H7, Edmonton, AB, Canada
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