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Yuen BPN, Wong KS, So YM, Kwok WH, Cheung HW, Wan TSM, Ho ENM, Wong WT. Gene Doping Control Analysis of Human Erythropoietin Transgene in Equine Plasma by PCR-Liquid Chromatography High-Resolution Tandem Mass Spectrometry. Anal Chem 2024; 96:5307-5314. [PMID: 38504497 DOI: 10.1021/acs.analchem.4c00247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
Gene doping involves the misuse of genetic materials to alter an athlete's performance, which is banned at all times in both human and equine sports. Quantitative polymerase chain reaction (qPCR) assays have been used to control the misuse of transgenes in equine sports. Our laboratory recently developed and implemented duplex as well as multiplex qPCR assays for transgenes detection. To further advance gene doping control, we have developed for the first time a sensitive and definitive PCR-liquid chromatography high-resolution tandem mass spectrometry (PCR-LC-HRMS/MS) method for transgene detection with an estimated limit of detection of below 100 copies/mL for the human erythropoietin (hEPO) transgene in equine plasma. The method involved magnetic-glass-particle-based extraction of DNA from equine plasma prior to PCR amplification with 2'-deoxyuridine 5'-triphosphate (dUTP) followed by treatments with uracil DNA glycosylase and hot piperidine for selective cleavage to give small oligonucleotide fragments. The resulting DNA fragments were then analyzed by LC-HRMS/MS. The applicability of this method has been demonstrated by the successful detection of hEPO transgene in a blood sample collected from a gelding (castrated male horse) that had been administered the transgene. This novel approach not only serves as a complementary method for transgene detection but also paves the way for developing a generic PCR-LC-HRMS/MS method for the detection of multiple transgenes.
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Affiliation(s)
- Bruce Pui-Nam Yuen
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
- Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin N.T., Hong Kong, China
| | - Kin-Sing Wong
- Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin N.T., Hong Kong, China
| | - Yat-Ming So
- Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin N.T., Hong Kong, China
| | - Wai Him Kwok
- Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin N.T., Hong Kong, China
| | - Hiu Wing Cheung
- Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin N.T., Hong Kong, China
| | - Terence See Ming Wan
- Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin N.T., Hong Kong, China
| | - Emmie Ngai-Man Ho
- Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin N.T., Hong Kong, China
| | - Wing-Tak Wong
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
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Yi JY, Kim M, Ahn JH, Kim BG, Son J, Sung C. CRISPR/deadCas9-based high-throughput gene doping analysis (HiGDA): A proof of concept for exogenous human erythropoietin gene doping detection. Talanta 2023; 258:124455. [PMID: 36933297 DOI: 10.1016/j.talanta.2023.124455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 03/07/2023] [Accepted: 03/11/2023] [Indexed: 03/17/2023]
Abstract
A genetic approach targeted toward improving athletic performance is called gene doping and is prohibited by the World Anti-Doping Agency. Currently, the clustered regularly interspaced short palindromic repeats-associated protein (Cas)-related assays have been utilized to detect genetic deficiencies or mutations. Among the Cas proteins, deadCas9 (dCas9), a nuclease-deficient mutant of Cas9, acts as a DNA binding protein with a target-specific single guide RNA. On the basis of the principles, we developed a dCas9-based high-throughput gene doping analysis for exogenous gene detection. The assay comprises two distinctive dCas9s, a magnetic bead immobilized capture dCas9 for exogenous gene isolation and a biotinylated dCas9 with streptavidin-polyHRP that enables rapid signal amplification. For efficient biotin labeling via maleimide-thiol chemistry, two cysteine residues of dCas9 were structurally validated, and the Cys574 residue was identified as an essential labeling site. As a result, we succeeded in detecting the target gene in a concentration as low as 12.3 fM (7.41 × 105 copies) and up to 10 nM (6.07 × 1011 copies) in a whole blood sample within 1 h with HiGDA. Assuming an exogenous gene transfer scenario, we added a direct blood amplification step to establish a rapid analytical procedure while detecting target genes with high sensitivity. Finally, we detected the exogenous human erythropoietin gene at concentrations as low as 2.5 copies within 90 min in 5 μL of the blood sample. Herein, we propose that HiGDA is a very fast, highly sensitive, and practical detection method for actual doping field in the future.
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Affiliation(s)
- Joon-Yeop Yi
- Doping Control Center, Korea Institute of Science and Technology, Seoul, 02792, South Korea; Interdisciplinary Program of Bioengineering, Seoul National University, Seoul, 08826, South Korea; Institute of Molecular Biology and Genetics, Seoul National University, Seoul, 08826, South Korea
| | - Minyoung Kim
- Doping Control Center, Korea Institute of Science and Technology, Seoul, 02792, South Korea
| | - Jung Ho Ahn
- Clean Energy Research Center, Korea Institute of Science and Technology, Seoul, 02792, South Korea
| | - Byung-Gee Kim
- Interdisciplinary Program of Bioengineering, Seoul National University, Seoul, 08826, South Korea; Institute of Molecular Biology and Genetics, Seoul National University, Seoul, 08826, South Korea; Bio-Max/N-Bio Institute, Seoul National University, Seoul, 08826, South Korea; School of Chemical and Biological Engineering, Seoul National University, Seoul, 08826, South Korea; Institute for Sustainable Development (ISD), Seoul National University, Seoul, 08826, South Korea
| | - Junghyun Son
- Doping Control Center, Korea Institute of Science and Technology, Seoul, 02792, South Korea
| | - Changmin Sung
- Doping Control Center, Korea Institute of Science and Technology, Seoul, 02792, South Korea.
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Yan J, Xu Z, Zhou H, Li T, Du X, Hu R, Zhu J, Ou G, Li Y, Yang Y. Integration of CRISPR/Cas12a and Multiplexed RPA for Fast Detection of Gene Doping. Anal Chem 2022; 94:16481-16490. [DOI: 10.1021/acs.analchem.2c04079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Jiayu Yan
- Lab of Biochemistry, School of Physical Education, China University of Geosciences, Wuhan 430074, China
- State Key Laboratory of Magnetic Resonance and Atomic Molecular Physics, National Centre for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology - Wuhan National Laboratory for Optoelectronics, Chinese Academy of Sciences, Wuhan 430071, China
| | - Zhichen Xu
- State Key Laboratory of Magnetic Resonance and Atomic Molecular Physics, National Centre for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology - Wuhan National Laboratory for Optoelectronics, Chinese Academy of Sciences, Wuhan 430071, China
- University of Chinese Academy of Sciences, Beijing 10049, China
| | - Hu Zhou
- Department of Gynecological Oncology, National Clinical Research Center for Obstetrics and Gynecology, Cancer Biology Research Center (Key Laboratory of the Ministry of Education), Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430070, China
| | - Tao Li
- State Key Laboratory of Magnetic Resonance and Atomic Molecular Physics, National Centre for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology - Wuhan National Laboratory for Optoelectronics, Chinese Academy of Sciences, Wuhan 430071, China
- University of Chinese Academy of Sciences, Beijing 10049, China
| | - Xincheng Du
- Lab of Biochemistry, School of Physical Education, China University of Geosciences, Wuhan 430074, China
| | - Rui Hu
- State Key Laboratory of Magnetic Resonance and Atomic Molecular Physics, National Centre for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology - Wuhan National Laboratory for Optoelectronics, Chinese Academy of Sciences, Wuhan 430071, China
- University of Chinese Academy of Sciences, Beijing 10049, China
| | - Jiang Zhu
- State Key Laboratory of Magnetic Resonance and Atomic Molecular Physics, National Centre for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology - Wuhan National Laboratory for Optoelectronics, Chinese Academy of Sciences, Wuhan 430071, China
- University of Chinese Academy of Sciences, Beijing 10049, China
| | - Gaozhi Ou
- Lab of Biochemistry, School of Physical Education, China University of Geosciences, Wuhan 430074, China
| | - Ying Li
- State Key Laboratory of Magnetic Resonance and Atomic Molecular Physics, National Centre for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology - Wuhan National Laboratory for Optoelectronics, Chinese Academy of Sciences, Wuhan 430071, China
- University of Chinese Academy of Sciences, Beijing 10049, China
| | - Yunhuang Yang
- State Key Laboratory of Magnetic Resonance and Atomic Molecular Physics, National Centre for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology - Wuhan National Laboratory for Optoelectronics, Chinese Academy of Sciences, Wuhan 430071, China
- University of Chinese Academy of Sciences, Beijing 10049, China
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Psychosocial aspects of sports medicine in pediatric athletes: Current concepts in the 21 st century. Dis Mon 2022:101482. [PMID: 36100481 DOI: 10.1016/j.disamonth.2022.101482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Behavioral aspects of organized sports activity for pediatric athletes are considered in a world consumed with winning at all costs. In the first part of this treatise, we deal with a number of themes faced by our children in their sports play. These concepts include the lure of sports, sports attrition, the mental health of pediatric athletes (i.e., effects of stress, anxiety, depression, suicide in athletes, ADHD and stimulants, coping with injuries, drug use, and eating disorders), violence in sports (i.e., concepts of the abused athlete including sexual abuse), dealing with supervisors (i.e., coaches, parents), peers, the talented athlete, early sports specialization and sports clubs. In the second part of this discussion, we cover ergolytic agents consumed by young athletes in attempts to win at all costs. Sports doping agents covered include anabolic steroids (anabolic-androgenic steroids or AAS), androstenedione, dehydroepiandrostenedione (DHEA), human growth hormone (hGH; also its human recombinant homologue: rhGH), clenbuterol, creatine, gamma hydroxybutyrate (GHB), amphetamines, caffeine and ephedrine. Also considered are blood doping that includes erythropoietin (EPO) and concepts of gene doping. In the last section of this discussion, we look at disabled pediatric athletes that include such concepts as athletes with spinal cord injuries (SCIs), myelomeningocele, cerebral palsy, wheelchair athletes, and amputee athletes; also covered are pediatric athletes with visual impairment, deafness, and those with intellectual disability including Down syndrome. In addition, concepts of autonomic dysreflexia, boosting and atlantoaxial instability are emphasized. We conclude that clinicians and society should protect our precious pediatric athletes who face many challenges in their involvement with organized sports in a world obsessed with winning. There is much we can do to help our young athletes find benefit from sports play while avoiding or blunting negative consequences of organized sport activities.
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Varillas-Delgado D, Del Coso J, Gutiérrez-Hellín J, Aguilar-Navarro M, Muñoz A, Maestro A, Morencos E. Genetics and sports performance: the present and future in the identification of talent for sports based on DNA testing. Eur J Appl Physiol 2022; 122:1811-1830. [PMID: 35428907 PMCID: PMC9012664 DOI: 10.1007/s00421-022-04945-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 03/29/2022] [Indexed: 12/19/2022]
Abstract
The impact of genetics on physiology and sports performance is one of the most debated research aspects in sports sciences. Nearly 200 genetic polymorphisms have been found to influence sports performance traits, and over 20 polymorphisms may condition the status of the elite athlete. However, with the current evidence, it is certainly too early a stage to determine how to use genotyping as a tool for predicting exercise/sports performance or improving current methods of training. Research on this topic presents methodological limitations such as the lack of measurement of valid exercise performance phenotypes that make the study results difficult to interpret. Additionally, many studies present an insufficient cohort of athletes, or their classification as elite is dubious, which may introduce expectancy effects. Finally, the assessment of a progressively higher number of polymorphisms in the studies and the introduction of new analysis tools, such as the total genotype score (TGS) and genome-wide association studies (GWAS), have produced a considerable advance in the power of the analyses and a change from the study of single variants to determine pathways and systems associated with performance. The purpose of the present study was to comprehensively review evidence on the impact of genetics on endurance- and power-based exercise performance to clearly determine the potential utility of genotyping for detecting sports talent, enhancing training, or preventing exercise-related injuries, and to present an overview of recent research that has attempted to correct the methodological issues found in previous investigations.
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Affiliation(s)
- David Varillas-Delgado
- Faculty of Health Sciences, Universidad Francisco de Vitoria, Pozuelo de Alarcón, 28223, Madrid, Spain.
| | - Juan Del Coso
- Centre for Sport Studies, Rey Juan Carlos University, Fuenlabrada, 28933, Madrid, Spain
| | - Jorge Gutiérrez-Hellín
- Faculty of Health Sciences, Universidad Francisco de Vitoria, Pozuelo de Alarcón, 28223, Madrid, Spain
| | - Millán Aguilar-Navarro
- Faculty of Health Sciences, Universidad Francisco de Vitoria, Pozuelo de Alarcón, 28223, Madrid, Spain
| | - Alejandro Muñoz
- Faculty of Health Sciences, Universidad Francisco de Vitoria, Pozuelo de Alarcón, 28223, Madrid, Spain
| | | | - Esther Morencos
- Faculty of Health Sciences, Universidad Francisco de Vitoria, Pozuelo de Alarcón, 28223, Madrid, Spain
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Abstract
The rules of fair play in sport generally prohibit the use of performance-enhancing drugs (PEDs). The World Anti-Doping Agency (WADA) oversees global antidoping regulations and testing for elite athletes participating in Olympic sports. Efforts to enforce antidoping policies are complicated by the diverse and evolving compounds and strategies employed by athletes to gain a competitive edge. Now between the uniquely proximate 2021 Tokyo and 2022 Beijing Olympic Games, we discuss WADA's efforts to prevent PED use during the modern Olympic Games. Then, we review the major PED classes with a focus on pathophysiology, complexities of antidoping testing, and relevant toxicities. Providers from diverse practice environments are likely to care for patients using PEDs for a variety of reasons and levels of sport; these providers should be aware of common PED classes and their risks.
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Affiliation(s)
- C James Watson
- Harvard Medical Toxicology Program, Boston Children's Hospital, Boston, MA, USA.,Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Genevra L Stone
- Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Daniel L Overbeek
- Harvard Medical Toxicology Program, Boston Children's Hospital, Boston, MA, USA.,Department of Emergency Medicine, University of Rochester, Rochester, NY, USA
| | - Takuyo Chiba
- Department of Emergency Medicine, International University of Health and Welfare, Ōtawara, Japan
| | - Michele M Burns
- Harvard Medical Toxicology Program, Boston Children's Hospital, Boston, MA, USA.,Division of Emergency Medicine, Boston Children's Hospital, Boston, MA, USA
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7
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Marchand A, Roulland I, Semence F, Ericsson M. EPO transgene detection in dried blood spots for antidoping application. Drug Test Anal 2021; 13:1888-1896. [PMID: 33961347 DOI: 10.1002/dta.3059] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 04/20/2021] [Accepted: 05/03/2021] [Indexed: 12/18/2022]
Abstract
The modification of gene expression to treat diseases is a field of research with exponential growth. As doping in sport closely follows emerging therapies, a surveillance of the modification of gene expression to enhance performance is needed. The gene coding for erythropoietin (EPO) is one target of interest. Since 2010, several protocols have been proposed to identify EPO gene doping by focusing on the presence in blood of a transgene that differ in size from the endogenous gene sequence, normally found in the human DNA. In this work, our aim was to validate an easily applicable method for EPO gene doping detection in dried blood spots (DBS). We evaluated the detection of EPO transgene in 20-μl DBS after the spike of a plasmid carrying the EPO transgene in whole blood. Three different DBS were compared: Nucleic-Card™, Whatman® 903, and the volumetric 20-μl VAMS™. Detection was performed with real-time polymerase chain reaction (PCR) and validated with two Taqman assays (one commercial and one custom) specific for the EPO transgene. The initial testing procedure could be done using one assay (custom) and the confirmation using the second one (commercial Taqman) with a final check of the size of the PCR product. Starting from 20-μl dried blood, 1000 copies of EPO transgene could efficiently be detected with the three types of DBS, VAMS showing a slightly better sensitivity. No loss of sensitivity was observed after 1-month storage of DBS at room temperature. This method could be applied to DBS collected during doping controls and allows reanalysis.
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Affiliation(s)
- Alexandre Marchand
- Analysis Department, Agence Française de Lutte contre le Dopage (AFLD), Châtenay-Malabry, France
| | - Ingrid Roulland
- Analysis Department, Agence Française de Lutte contre le Dopage (AFLD), Châtenay-Malabry, France
| | - Florian Semence
- Analysis Department, Agence Française de Lutte contre le Dopage (AFLD), Châtenay-Malabry, France
| | - Magnus Ericsson
- Analysis Department, Agence Française de Lutte contre le Dopage (AFLD), Châtenay-Malabry, France
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Thevis M, Kuuranne T, Geyer H. Annual banned-substance review: Analytical approaches in human sports drug testing 2019/2020. Drug Test Anal 2020; 13:8-35. [PMID: 33185038 DOI: 10.1002/dta.2969] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 11/08/2020] [Indexed: 12/18/2022]
Abstract
Analytical chemistry-based research in sports drug testing has been a dynamic endeavor for several decades, with technology-driven innovations continuously contributing to significant improvements in various regards including analytical sensitivity, comprehensiveness of target analytes, differentiation of natural/endogenous substances from structurally identical but synthetically derived compounds, assessment of alternative matrices for doping control purposes, and so forth. The resulting breadth of tools being investigated and developed by anti-doping researchers has allowed to substantially improve anti-doping programs and data interpretation in general. Additionally, these outcomes have been an extremely valuable pledge for routine doping controls during the unprecedented global health crisis that severely affected established sports drug testing strategies. In this edition of the annual banned-substance review, literature on recent developments in anti-doping published between October 2019 and September 2020 is summarized and discussed, particularly focusing on human doping controls and potential applications of new testing strategies to substances and methods of doping specified the World Anti-Doping Agency's 2020 Prohibited List.
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Affiliation(s)
- Mario Thevis
- Center for Preventive Doping Research - Institute of Biochemistry, German Sport University Cologne, Cologne, Germany.,European Monitoring Center for Emerging Doping Agents, Cologne, Germany
| | - Tiia Kuuranne
- Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Genève and Lausanne, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Epalinges, Switzerland
| | - Hans Geyer
- Center for Preventive Doping Research - Institute of Biochemistry, German Sport University Cologne, Cologne, Germany.,European Monitoring Center for Emerging Doping Agents, Cologne, Germany
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