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Sadhasivam B, Manyanga J, Ganapathy V, Acharya P, Bouharati C, Chinnaiyan M, Mehta T, Mathews B, Castles S, Rubenstein DA, Tackett AP, Zhao YD, Ramachandran I, Queimado L. Exposure to Secondhand Smoke Extract Increases Cisplatin Resistance in Head and Neck Cancer Cells. Int J Mol Sci 2024; 25:1032. [PMID: 38256106 PMCID: PMC10816441 DOI: 10.3390/ijms25021032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/03/2024] [Accepted: 01/10/2024] [Indexed: 01/24/2024] Open
Abstract
Chemotherapy and radiotherapy resistance are major obstacles in the long-term efficacy of head and neck squamous cell carcinoma (HNSCC) treatment. Secondhand smoke (SHS) exposure is common and has been proposed as an independent predictor of HNSCC recurrence and disease-free survival. However, the underlying mechanisms responsible for these negative patient outcomes are unknown. To assess the effects of SHS exposure on cisplatin efficacy in cancer cells, three distinct HNSCC cell lines were exposed to sidestream (SS) smoke, the main component of SHS, at concentrations mimicking the nicotine level seen in passive smokers' saliva and treated with cisplatin (0.01-100 µM) for 48 h. Compared to cisplatin treatment alone, cancer cells exposed to both cisplatin and SS smoke extract showed significantly lower cisplatin-induced cell death and higher cell viability, IC50, and indefinite survival capacity. However, SS smoke extract exposure alone did not change cancer cell viability, cell death, or cell proliferation compared to unexposed control cancer cells. Mechanistically, exposure to SS smoke extract significantly reduced the expression of cisplatin influx transporter CTR1, and increased the expression of multidrug-resistant proteins ABCG2 and ATP7A. Our study is the first to document that exposure to SHS can increase cisplatin resistance by altering the expression of several proteins involved in multidrug resistance, thus increasing the cells' capability to evade cisplatin-induced cell death. These findings emphasize the urgent need for clinicians to consider the potential role of SHS on treatment outcomes and to advise cancer patients and caregivers on the potential benefits of avoiding SHS exposure.
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Affiliation(s)
- Balaji Sadhasivam
- Department of Otolaryngology Head and Neck Surgery, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (B.S.); (J.M.); (V.G.); (M.C.); (T.M.); (B.M.); (S.C.)
- Department of Occupational and Environmental Health, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Jimmy Manyanga
- Department of Otolaryngology Head and Neck Surgery, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (B.S.); (J.M.); (V.G.); (M.C.); (T.M.); (B.M.); (S.C.)
- Department of Cell Biology, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Vengatesh Ganapathy
- Department of Otolaryngology Head and Neck Surgery, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (B.S.); (J.M.); (V.G.); (M.C.); (T.M.); (B.M.); (S.C.)
| | - Pawan Acharya
- Department of Biostatistics, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (P.A.); (Y.D.Z.)
| | - Célia Bouharati
- Department of Otolaryngology Head and Neck Surgery, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (B.S.); (J.M.); (V.G.); (M.C.); (T.M.); (B.M.); (S.C.)
| | - Mayilvanan Chinnaiyan
- Department of Otolaryngology Head and Neck Surgery, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (B.S.); (J.M.); (V.G.); (M.C.); (T.M.); (B.M.); (S.C.)
| | - Toral Mehta
- Department of Otolaryngology Head and Neck Surgery, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (B.S.); (J.M.); (V.G.); (M.C.); (T.M.); (B.M.); (S.C.)
| | - Basil Mathews
- Department of Otolaryngology Head and Neck Surgery, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (B.S.); (J.M.); (V.G.); (M.C.); (T.M.); (B.M.); (S.C.)
| | - Samuel Castles
- Department of Otolaryngology Head and Neck Surgery, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (B.S.); (J.M.); (V.G.); (M.C.); (T.M.); (B.M.); (S.C.)
| | - David A. Rubenstein
- Department of Biomedical Engineering, Stony Brook University, New York City, NY 11794, USA;
| | - Alayna P. Tackett
- TSET Health Promotion Research Center, Stephenson Cancer Center, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA;
- Division of Medical Oncology, The Ohio State University, Columbus, OH 43210, USA
| | - Yan D. Zhao
- Department of Biostatistics, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (P.A.); (Y.D.Z.)
| | - Ilangovan Ramachandran
- Department of Endocrinology, Dr. ALM Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani Campus, Chennai, TN 600113, India;
| | - Lurdes Queimado
- Department of Otolaryngology Head and Neck Surgery, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (B.S.); (J.M.); (V.G.); (M.C.); (T.M.); (B.M.); (S.C.)
- Department of Cell Biology, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- TSET Health Promotion Research Center, Stephenson Cancer Center, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA;
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Naidoo P, Bouharati C, Rambiritch V, Jose N, Karamchand S, Chilton R, Leisegang R. Real-world evidence and product development: Opportunities, challenges and risk mitigation. Wien Klin Wochenschr 2021; 133:840-846. [PMID: 33837463 PMCID: PMC8034870 DOI: 10.1007/s00508-021-01851-w] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [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: 12/08/2020] [Accepted: 03/09/2021] [Indexed: 11/25/2022]
Abstract
Real-world evidence (RWE) is derived from real-world data (RWD) sources including electronic health records, claims data, registries (disease, product) and pragmatic clinical trials. The importance of RWE derived from RWD has been once again demonstrated during the coronavirus disease 2019 (COVID-19) pandemic, as it can improve patient care by complementing information obtained from traditional clinical trial programs. Additionally, RWE can generate insights into disease mechanisms, epidemiology, patient flows in and out of healthcare systems, and drivers and barriers to optimal clinical care in real-world settings. Identifying unmet medical needs is crucial as it often can inform which investigational new drugs enter clinical trial testing, and RWE studies from hospital settings have contributed substantial progress here. RWE can also optimize the design of clinical studies, inform benefit risk assessments and use networks of pragmatic studies to help with clinical trial feasibilities and eventual trial initiation. The challenges of RWD include data quality, reproducibility and accuracy which may affect validity. RWD and RWE must be fit for purpose and one must be cognizant of inherent biases.
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Affiliation(s)
- Poobalan Naidoo
- Department of Nephrology, Inkosi Albert Luthuli Central Hospital, Durban, South Africa
| | - Célia Bouharati
- Clinical Operations and Medical Affairs, Sanofi, Midrand, South Africa.
| | - Virendra Rambiritch
- Discipline of Pharmaceutical Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Nadina Jose
- Department of Health Informatics, Rutgers School of Health Professions, The State University of New Jersey, Newark, New Jersey, United States
| | - Sumanth Karamchand
- Department of Medicine, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Robert Chilton
- Faculty of Medicine, Division of Cardiology and Interventional Cardiology, University of Texas Health Science Centre at San Antonio, San Antonio, Texas, United States
| | - Rory Leisegang
- Faculty of Pharmacy, Department of Pharmaceutical Biosciences, Uppsala University, Uppsala, Sweden
- Department of Paediatrics and Child Health, Tygerberg Hospital, FAMCRU, Stellenbosch University, Cape Town, South Africa
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Raal FJ, Chilton R, Ranjith N, Rambiritch V, Leisegang RF, Ebrahim IO, Tonder AV, Shunmoogam N, Bouharati C, Musa MG, Karamchand S, Naidoo P, Blom DJ. PCSK9 Inhibitors: From Nature’s Lessons to Clinical Utility. Endocr Metab Immune Disord Drug Targets 2020; 20:840-854. [DOI: 10.2174/1871530320666200213114138] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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] [Received: 09/14/2019] [Revised: 10/31/2019] [Accepted: 12/02/2019] [Indexed: 12/21/2022]
Abstract
Background:
Proprotein convertase subtilisin-kexin type 9 (PCSK9) inhibitors are a novel
class of non-statin lipid lowering therapy that reduce LDL-cholesterol by 50 - 60%. PCSK9 inhibitors
decrease LDL-cholesterol by preventing intracellular degradation of LDL receptors; subsequently, a
greater number of LDL-receptors are available on the cell surface to extract circulating LDL.
Objective:
To describe the origins of PCSK9 inhibitors and their current use in clinical practice.
Methods:
We performed a narrative review of the PCSK9 inhibitor class of drugs.
Results:
Current data indicate that PCSK9 inhibitors effectively reduce LDL-cholesterol and are well
tolerated and safe. PCSK9 inhibitors have also been shown to reduce cardiovascular event rates in
patients with stable atherosclerotic cardiovascular disease and in patients with a recent (up to one year)
acute coronary syndrome. Given the costs, chronicity of the treatment and the potential budget impact,
PCSK9 inhibitors are often limited to patients with the highest absolute risk for major adverse cardiovascular
events despite optimal treatment with high-intensity statin and ezetimibe.
Conclusion:
PCSK9 inhibitors have a favorable safety, efficacy and tolerability profile. Postmarketing
safety surveillance and real-world studies are needed to further support the long-term safety
profile of this class of medicine.
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Affiliation(s)
- Frederick J. Raal
- Department of Medicine, Division of Endocrinology and Metabolism, Faculty of Health Sciences, University of Witwatersrand, Johannesburg, South Africa
| | - Robert Chilton
- Department of Medicine, Faculty of Medicine, Division of Cardiology and Interventional Cardiology, University of Texas Health Science Center at San Antonia, Texas, United States
| | - Naresh Ranjith
- Department of Cardiology, Cardiovascular Research Centre, Durban, South Africa
| | - Virendra Rambiritch
- Department of Pharmacology, Faculty of Health Sciences, Discipline of Pharmaceutical Sciences, University of Kwa-Zulu Natal, Durban, South Africa
| | - Rory F. Leisegang
- Department of Pharmaceutical Biosciences, Faculty of Pharmacy, Uppsala University, Uppsala, Sweden
| | | | - Alet van Tonder
- Department of Diabetes and Cardiovascular Medicine, Medical Affairs, Sanofi, Midrand, South Africa
| | - Nelusha Shunmoogam
- Department of Diabetes and Cardiovascular Medicine, Medical Affairs, Sanofi, Midrand, South Africa
| | - Célia Bouharati
- Department of Clinical Trials, Clinical Study Unit, Sanofi, Midrand, South Africa
| | - Moji G. Musa
- Department of Diabetes and Cardiovascular Medicine, Medical Affairs, Sanofi, Midrand, South Africa
| | - Sumanth Karamchand
- Department of Medicine, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Poobalan Naidoo
- Department of Diabetes and Cardiovascular Medicine, Medical Affairs, Sanofi, Midrand, South Africa
| | - Dirk J. Blom
- Department of Medicine, Division of Lipidology and Hatter Institute for Cardiovascular Research in Africa, University of Cape Town, Cape Town, South Africa
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