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Liu YM, Wang S, Dickenson A, Mao J, Bai X, Liao X. An on-line SPE-LC-MS/MS method for quantification of nucleobases and nucleosides present in biological fluids. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:2505-2512. [PMID: 38584507 PMCID: PMC11151739 DOI: 10.1039/d4ay00100a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Solid phase extraction (SPE) and liquid chromatographic (LC) separation of nucleobases and nucleosides are challenging due to the high hydrophilicity of these compounds. Herein we report a novel on-line SPE-LC-MS/MS method for their quantification after pre-column derivatization with chloroacetaldehyde (CAA). The method proposed is selective and sensitive with limits of detection at the nano-molar level. Analysis of urine and saliva samples by using this method is demonstrated. Adenine, guanine, cytosine, adenosine, guanosine, and cytidine were found in the range from 0.19 (guanosine) to 1.83 μM (cytidine) in urine and from 0.015 (guanosine) to 0.79 μM (adenine) in saliva. Interestingly, methylation of cytidine was found to be significantly different in urine from that in saliva. While 5-hydroxymethylcytidine was detected at a very low level (<0.05 μM) in saliva, it was found to be the most prominent methylated cytidine in urine at a high level of 3.33 μM. Since on-line SPE is deployed, the proposed LC-MS/MS quantitative assay is convenient to carry out and offers good assay accuracy and repeatability.
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Affiliation(s)
- Yi-Ming Liu
- Department of Chemistry, Physics, and Atmospheric Science, Jackson State University, Jackson, MS 39217, USA.
| | - Shuguan Wang
- Department of Chemistry, Physics, and Atmospheric Science, Jackson State University, Jackson, MS 39217, USA.
| | - Amani Dickenson
- Department of Chemistry, Physics, and Atmospheric Science, Jackson State University, Jackson, MS 39217, USA.
| | - Jinghe Mao
- Department of Biology, Tougaloo College, Tougaloo, MS 39174, USA
| | - Xiaolin Bai
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China.
| | - Xun Liao
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China.
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2
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Yao C, Lv D, Zhou X, Fu P, Sun W, Chen J, Lin H. Exploring urinary modified nucleosides as biomarkers for diabetic retinopathy: Development and validation of a ultra performance liquid chromatography-tandem mass spectrometry method. J Chromatogr B Analyt Technol Biomed Life Sci 2024; 1232:123968. [PMID: 38150972 DOI: 10.1016/j.jchromb.2023.123968] [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: 08/17/2023] [Revised: 12/06/2023] [Accepted: 12/11/2023] [Indexed: 12/29/2023]
Abstract
The dynamic modification of RNA plays a crucial role in biological regulation and is strongly linked to human disease development and progression. Notably, modified nucleosides in urine have shown promising potential as early diagnostic biomarkers for various conditions. In this study, we developed and validated a rapid, sensitive, and accurate UPLC-MS/MS method for quantifying eight types of modified nucleosides (N1-methyladenosine (m1A), N6-methyladenosine (m6A), 5-methyluridine (m5U), 5-taurinomethyl-2-thiouridine (τm5s2U), 5-methylcytidine (m5C), 2'-O-methylcytidine (Cm), N1-methylguanosine (m1G), and N7-methylguanosine (m7G) in human urine. Using the method, we measured the urinary concentrations of m1A, m6A, m5U, τm5s2U, m5C, Cm, m1G, and m7G in a total of 21 control individuals and 23 patients diagnosed with diabetic retinopathy (DR). Cm levels showed promise as a diagnostic marker for diabetic retinopathy (DR), with a significant value (P < 0.01) and an AUC of 0.735. Other modified nucleosides also exhibited significant differences within specific subpopulations. As non-proliferative diabetic retinopathy (NPDR) signifies the latent early stage of diabetic retinopathy, we developed a multivariate linear model that integrates patients' sex, age, height, and urinary concentration of modified nucleosides which aims to predict and differentiate between healthy individuals, NPDR patients, and proliferative diabetic retinopathy (PDR) patients. Encouragingly, the model achieved satisfactory accuracy rates: healthy (81%), NPDR (75%), and PDR (80%). Our findings provide valuable insights into the development of an early, cost-effective, and noninvasive diagnostic approach for diabetic retinopathy.
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Affiliation(s)
- Chen Yao
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, PR China; School of Life Sciences, Hainan University, Haikou 570228, PR China.
| | - Daizhu Lv
- Analysis and Testing Center, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China.
| | - Xueqing Zhou
- Analysis and Testing Center, Hainan University, Haikou 570228, PR China.
| | - Pengcheng Fu
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, PR China.
| | - Wen Sun
- Hainan Traditional Chinese Medicine Hospital, Hospital of Chinese Medicine Affiliated by Hainan Medical College, Haikou 570203, PR China.
| | - Jinlian Chen
- Hainan Eye Hospital and Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Haikou 570311, PR China.
| | - Huan Lin
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, PR China.
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Yao Z, Li M, Sun Y, Wang C, Wei Y. Preparation of restricted-access boronate affinity adsorbent with excellent anti-protein adsorption property for directly extracting small cis-diol molecules from biological matrices. Talanta 2023; 265:124867. [PMID: 37385192 DOI: 10.1016/j.talanta.2023.124867] [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: 02/18/2023] [Revised: 06/09/2023] [Accepted: 06/20/2023] [Indexed: 07/01/2023]
Abstract
Boronate affinity adsorbents are of great promise in the enrichment of small cis-diol-containing molecules (cis-diols) from biological matrices. This work develops a restricted-access boronate affinity mesoporous adsorbent, in which boronate sites are only distributed on the internal surface of mesopores and the external surface is a strongly hydrophilic layer. The adsorbent has high binding capacities (30.3 mg g-1, 22.9 mg g-1 and 14.9 mg g-1 for dopamine, catechol and adenosine, respectively) in spite of removal of the boronate sites on the external surface of adsorbent. The adsorption specific of adsorbent towards cis-diols was assessed by dispersive solid-phase extraction (d-SPE) method, and the results show that the adsorbent can selectively extract small cis-diols in the biosamples while exclude proteins completely. Under the optimal d-SPE, the nucleosides and cis-diol drugs in human serum were successfully analyzed by coupling d-SPE with high-performance liquid chromatography. Where, the detection limits are between 6.1 and 13.4 ng mL-1 for four nucleosides, and 24.9 and 34.3 ng mL-1 for two cis-diol drugs; the relative recoveries of all the analytes vary from 84.1% to 110.1% (RSDs <13.4%, n = 6). The results indicate that the adsorbent can directly treat the real biosamples without the necessary protein precipitation steps in advance, thus simplifying the analysis process.
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Affiliation(s)
- Zewei Yao
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, China
| | - Mao Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, China
| | - Yao Sun
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, China
| | - Chaozhan Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, China
| | - Yinmao Wei
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, China.
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Yin H, Yuan Y, Xin L, Hang Q, Zhao L, Qin F, Xiong Z. pH-responsive magnetic graphene oxide composite as an adsorbent with high affinity for rapid capture of nucleosides. Mikrochim Acta 2023; 190:365. [PMID: 37612484 DOI: 10.1007/s00604-023-05945-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 08/06/2023] [Indexed: 08/25/2023]
Abstract
A novel pH-responsive magnetic graphene oxide composite (MGO@PEI-BA) is proposed for the first time as an adsorbent for the rapid capture and detection of nucleosides (cytidine, uridine, guanosine, and adenosine). The morphology, structure, and magnetic properties of the composite were evaluated using various characterization techniques. The results indicated that the composite was successfully fabricated. A series of parameters that affect extraction and elution were optimized through one-factor-at-a-time and Box-Behnken design of response surface methodology (BBD-RSM). The unique layered structures and easily accessible active sites of the composite facilitated molecular transport, resulting in instantaneous equilibrium of nucleosides adsorption within 5 min. Based on this study, a magnetic dispersive micro-solid-phase extraction (MD-μ-SPE) method assisted by the MGO@PEI-BA was developed in combination with UHPLC-UV analysis for the determination of nucleosides in rat urine. Under the optimum conditions, a wide linear range (10-2000 ng mL-1), good linearity (r > 0.99), low detection limits (1-3 ng mL-1), low relative standard deviations (RSDs ≤ 3.9%), and satisfactory recoveries (82.7-96.3%) were achieved. These results demonstrate that the MGO@PEI-BA is an excellent adsorbent for extracting nucleosides from biological samples.
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Affiliation(s)
- Huawen Yin
- School of Pharmacy, Shenyang Pharmaceutical University, No. 26 Huatuo Rd, High & New Tech Development Zone, 117004, Benxi, Liaoning Province, People's Republic of China
| | - Yue Yuan
- School of Pharmacy, Shenyang Pharmaceutical University, No. 26 Huatuo Rd, High & New Tech Development Zone, 117004, Benxi, Liaoning Province, People's Republic of China
| | - Ling Xin
- School of Pharmacy, Shenyang Pharmaceutical University, No. 26 Huatuo Rd, High & New Tech Development Zone, 117004, Benxi, Liaoning Province, People's Republic of China
| | - Qian Hang
- School of Pharmacy, Shenyang Pharmaceutical University, No. 26 Huatuo Rd, High & New Tech Development Zone, 117004, Benxi, Liaoning Province, People's Republic of China
| | - Longshan Zhao
- School of Pharmacy, Shenyang Pharmaceutical University, No. 26 Huatuo Rd, High & New Tech Development Zone, 117004, Benxi, Liaoning Province, People's Republic of China
| | - Feng Qin
- School of Pharmacy, Shenyang Pharmaceutical University, No. 26 Huatuo Rd, High & New Tech Development Zone, 117004, Benxi, Liaoning Province, People's Republic of China.
| | - Zhili Xiong
- School of Pharmacy, Shenyang Pharmaceutical University, No. 26 Huatuo Rd, High & New Tech Development Zone, 117004, Benxi, Liaoning Province, People's Republic of China.
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5
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Visconti G, de Figueiredo M, Salamin O, Boccard J, Vuilleumier N, Nicoli R, Kuuranne T, Rudaz S. Straightforward quantification of endogenous steroids with liquid chromatography-tandem mass spectrometry: Comparing calibration approaches. J Chromatogr B Analyt Technol Biomed Life Sci 2023; 1226:123778. [PMID: 37393882 DOI: 10.1016/j.jchromb.2023.123778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 05/23/2023] [Accepted: 05/31/2023] [Indexed: 07/04/2023]
Abstract
Different calibration strategies are used in liquid chromatography hyphenated to mass spectrometry (LC-MS) bioanalysis. Currently, the surrogate matrix and surrogate analyte represent the most widely used approaches to compensate for the lack of analyte-free matrices in endogenous compounds quantification. In this context, there is a growing interest in rationalizing and simplifying quantitative analysis using a one-point concentration level of stable isotope-labeled (SIL) standards as surrogate calibrants. Accordingly, an internal calibration (IC) can be applied when the instrument response is translated into analyte concentration via the analyte-to-SIL ratio performed directly in the study sample. Since SILs are generally used as internal standards to normalize variability between authentic study sample matrix and surrogate matrix used for the calibration, IC can be calculated even if the calibration protocol was achieved for an external calibration (EC). In this study, a complete dataset of a published and fully validated method to quantify an extended steroid profile in serum was recomputed by adapting the role of SIL internal standards as surrogate calibrants. Using the validation samples, the quantitative performances for IC were comparable with the original method, showing acceptable trueness (79%-115%) and precision (0.8%-11.8%) for the 21 detected steroids. The IC methodology was then applied to human serum samples (n = 51) from healthy women and women diagnosed with mild hyperandrogenism, showing high agreement (R2 > 0.98) with the concentrations obtained using the conventional quantification based on EC. For IC, Passing-Bablok regression showed proportional biases between -15.0% and 11.3% for all quantified steroids, with an average difference of -5.8% compared to EC. These results highlight the reliability and the advantages of implementing IC in clinical laboratories routine to simplify quantification in LC-MS bioanalysis, especially when a large panel of analytes is monitored.
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Affiliation(s)
- Gioele Visconti
- School of Pharmaceutical Sciences, University of Geneva, CMU - Rue Michel-Servet 1, Geneva, Switzerland; Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU - Rue Michel-Servet 1, Geneva, Switzerland
| | - Miguel de Figueiredo
- School of Pharmaceutical Sciences, University of Geneva, CMU - Rue Michel-Servet 1, Geneva, Switzerland; Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU - Rue Michel-Servet 1, Geneva, Switzerland
| | - Olivier Salamin
- Center of Research and Expertise in Anti-Doping Sciences - REDs, Institute of Sport Sciences, University of Lausanne, Lausanne, Switzerland; Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Lausanne and Geneva, Lausanne University Hospital and University of Lausanne, Switzerland
| | - Julien Boccard
- School of Pharmaceutical Sciences, University of Geneva, CMU - Rue Michel-Servet 1, Geneva, Switzerland; Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU - Rue Michel-Servet 1, Geneva, Switzerland; Swiss Centre for Applied Human Toxicology (SCAHT), Basel, Switzerland
| | - Nicolas Vuilleumier
- Department of Genetic and Laboratory Medicine, Geneva University Hospitals (HUG), Geneva, Switzerland
| | - Raul Nicoli
- Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Lausanne and Geneva, Lausanne University Hospital and University of Lausanne, Switzerland
| | - Tiia Kuuranne
- Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Lausanne and Geneva, Lausanne University Hospital and University of Lausanne, Switzerland
| | - Serge Rudaz
- School of Pharmaceutical Sciences, University of Geneva, CMU - Rue Michel-Servet 1, Geneva, Switzerland; Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU - Rue Michel-Servet 1, Geneva, Switzerland; Swiss Centre for Applied Human Toxicology (SCAHT), Basel, Switzerland.
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6
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Khan S, Cho WC, Sepahvand A, Haji Hosseinali S, Hussain A, Nejadi Babadaei MM, Sharifi M, Falahati M, Jaragh-Alhadad LA, Ten Hagen TLM, Li X. Electrochemical aptasensor based on the engineered core-shell MOF nanostructures for the detection of tumor antigens. J Nanobiotechnology 2023; 21:136. [PMID: 37101280 PMCID: PMC10131368 DOI: 10.1186/s12951-023-01884-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 04/06/2023] [Indexed: 04/28/2023] Open
Abstract
It is essential to develop ultrasensitive biosensors for cancer detection and treatment monitoring. In the development of sensing platforms, metal-organic frameworks (MOFs) have received considerable attention as potential porous crystalline nanostructures. Core-shell MOF nanoparticles (NPs) have shown different diversities, complexities, and biological functionalities, as well as significant electrochemical (EC) properties and potential bio-affinity to aptamers. As a result, the developed core-shell MOF-based aptasensors serve as highly sensitive platforms for sensing cancer biomarkers with an extremely low limit of detection (LOD). This paper aimed to provide an overview of different strategies for improving selectivity, sensitivity, and signal strength of MOF nanostructures. Then, aptamers and aptamers-modified core-shell MOFs were reviewed to address their functionalization and application in biosensing platforms. Additionally, the application of core-shell MOF-assisted EC aptasensors for detection of several tumor antigens such as prostate-specific antigen (PSA), carbohydrate antigen 15-3 (CA15-3), carcinoembryonic antigen (CEA), human epidermal growth factor receptor-2 (HER2), cancer antigen 125 (CA-125), cytokeratin 19 fragment (CYFRA21-1), and other tumor markers were discussed. In conclusion, the present article reviews the advancement of potential biosensing platforms toward the detection of specific cancer biomarkers through the development of core-shell MOFs-based EC aptasensors.
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Affiliation(s)
- Suliman Khan
- Medical Research Center, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Department of Medical Lab Technology, The University of Haripur, Haripur, Pakistan
| | - William C Cho
- Department of Clinical Oncology, Queen Elizabeth Hospital, Kowloon, Hong Kong, China
| | - Afrooz Sepahvand
- Department of Cellular and Molecular Biology, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Sara Haji Hosseinali
- Department of Genetics, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Arif Hussain
- School of Life Sciences, Manipal Academy of Higher Education, Dubai, United Arab Emirates
| | - Mohammad Mahdi Nejadi Babadaei
- Department of Molecular Genetics, Faculty of Biological Science, North Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Majid Sharifi
- Student Research Committee, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
- Depatment of Tissue Engineering, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Mojtaba Falahati
- Precision Medicine in Oncology (PrMiO), Department of Pathology, Erasmus MC Cancer Institute, Erasmus MC, Rotterdam, The Netherlands.
- Nanomedicine Innovation Center Erasmus (NICE), Erasmus MC, Rotterdam, The Netherlands.
| | | | - Timo L M Ten Hagen
- Precision Medicine in Oncology (PrMiO), Department of Pathology, Erasmus MC Cancer Institute, Erasmus MC, Rotterdam, The Netherlands.
- Nanomedicine Innovation Center Erasmus (NICE), Erasmus MC, Rotterdam, The Netherlands.
| | - Xin Li
- Department of Neurology, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China.
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de Oliveira Moreira OB, Queiroz de Souza JC, Beraldo Candido JM, do Nascimento MP, Chellini PR, de Lemos LM, de Oliveira MAL. Determination of creatinine in urine and blood serum human samples by CZE-UV using on-column internal standard injection. Talanta 2023; 258:124465. [PMID: 36965416 DOI: 10.1016/j.talanta.2023.124465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 03/13/2023] [Accepted: 03/15/2023] [Indexed: 03/27/2023]
Abstract
Creatinine is a well-stablished biomarker for kidney malfunctions and for normalization parameter of urinary quantitative information. Recently, metabolic studies have been discovering other functionalities for creatinine tests in human urine and blood serum. In this work we present an enhanced capillary electrophoresis (CE) based protocol for determination of creatinine. CE is a high-throughput separation technique that have been getting attention through the last decades and might be considered to be adopted as an analytical instrumentation for clinical purposes. In the proposed method, we performed a short injection program with on-column addition of internal standard. Additionally, the method allows a simultaneous screening of non-proteinogenic amino acids that could be considered for metabolomics purposes. We design a pilot study that successfully estimated the creatinine value in 100 urine samples with (2.85 ± 1.78) mg dL-1 LOD; (8.24 ± 5.93) mg dL-1 LOQ and 82.4% accuracy. Considering that serum creatinine is also included in the clinical laboratory routines for estimated Glomerular Filtration Rate dosage, the method was complementary applied to 10 blood serum samples, which resulted in a model with (0.4 ± 0.2) mg dL-1 LOD; (2.0 ± 0.6) mg dL-1 LOQ and 83.8% of accuracy. All results were in agreement with reference values. The proposed method promotes a great analytical frequency and reproducibility with enhanced specificity compared with the ongoing protocol by Jaffe's reaction, thereby proving to be useful as an alternative for creatinine exams that might help complete a diagnosis of a series of health-related issues.
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Affiliation(s)
- Olívia Brito de Oliveira Moreira
- Grupo de Química Analítica e Quimiometria - GQAQ, Chemistry Department, Institute of Exact Sciences, Federal University of Juiz de Fora (UFJF), 36036-900, Juiz de Fora, MG, Brazil
| | - Jéssica Cordeiro Queiroz de Souza
- Grupo de Química Analítica e Quimiometria - GQAQ, Chemistry Department, Institute of Exact Sciences, Federal University of Juiz de Fora (UFJF), 36036-900, Juiz de Fora, MG, Brazil
| | - João Marcos Beraldo Candido
- Grupo de Química Analítica e Quimiometria - GQAQ, Chemistry Department, Institute of Exact Sciences, Federal University of Juiz de Fora (UFJF), 36036-900, Juiz de Fora, MG, Brazil
| | - Maria Patrícia do Nascimento
- Grupo de Química Analítica e Quimiometria - GQAQ, Chemistry Department, Institute of Exact Sciences, Federal University of Juiz de Fora (UFJF), 36036-900, Juiz de Fora, MG, Brazil
| | - Paula Rocha Chellini
- Grupo de Química Analítica e Quimiometria - GQAQ, Chemistry Department, Institute of Exact Sciences, Federal University of Juiz de Fora (UFJF), 36036-900, Juiz de Fora, MG, Brazil; Faculdade de Farmácia, Federal University of Juiz de Fora (UFJF), 36036-900, Juiz de Fora, MG, Brazil
| | | | - Marcone Augusto Leal de Oliveira
- Grupo de Química Analítica e Quimiometria - GQAQ, Chemistry Department, Institute of Exact Sciences, Federal University of Juiz de Fora (UFJF), 36036-900, Juiz de Fora, MG, Brazil; National Institute of Science and Technology for Bioanalytics - INCTBio, Institute of Chemistry, University of Campinas (UNICAMP), 13083-970, Campinas, SP, Brazil.
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Visconti G, Boccard J, Feinberg M, Rudaz S. From fundamentals in calibration to modern methodologies: A tutorial for small molecules quantification in liquid chromatography-mass spectrometry bioanalysis. Anal Chim Acta 2023; 1240:340711. [PMID: 36641149 DOI: 10.1016/j.aca.2022.340711] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 12/05/2022] [Accepted: 12/06/2022] [Indexed: 12/12/2022]
Abstract
Over the last two decades, liquid chromatography coupled to mass-spectrometry (LC‒MS) has become the gold standard to perform qualitative and quantitative analyses of small molecules. When quantitative analysis is developed, an analyst usually refers to international guidelines for analytical method validation. In this context, the design of calibration curves plays a key role in providing accurate results. During recent years and along with instrumental advances, strategies to build calibration curves have dramatically evolved, introducing innovative approaches to improve quantitative precision and throughput. For example, when a labeled standard is available to be spiked directly into the study sample, the concentration of the unlabeled analog can be easily determined using the isotopic pattern deconvolution or the internal calibration approach, eliminating the need for multipoint calibration curves. This tutorial aims to synthetize the advances in LC‒MS quantitative analysis for small molecules in complex matrices, going from fundamental aspects in calibration to modern methodologies and applications. Different work schemes for calibration depending on the sample characteristics (analyte and matrix nature) are distinguished and discussed. Finally, this tutorial outlines the importance of having international guidelines for analytical method validation that agree with the advances in calibration strategies and analytical instrumentation.
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Affiliation(s)
- Gioele Visconti
- School of Pharmaceutical Sciences, University of Geneva, CMU - Rue Michel-Servet 1, 1211, Geneva, Switzerland; Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU - Rue Michel-Servet 1, 1211, Geneva, Switzerland
| | - Julien Boccard
- School of Pharmaceutical Sciences, University of Geneva, CMU - Rue Michel-Servet 1, 1211, Geneva, Switzerland; Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU - Rue Michel-Servet 1, 1211, Geneva, Switzerland
| | | | - Serge Rudaz
- School of Pharmaceutical Sciences, University of Geneva, CMU - Rue Michel-Servet 1, 1211, Geneva, Switzerland; Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU - Rue Michel-Servet 1, 1211, Geneva, Switzerland.
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9
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Discovery and validation of bladder cancer related excreted nucleosides biomarkers by dilution approach in cell culture supernatant and urine using UHPLC-MS/MS. J Proteomics 2023; 270:104737. [PMID: 36174950 DOI: 10.1016/j.jprot.2022.104737] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 09/16/2022] [Accepted: 09/19/2022] [Indexed: 02/01/2023]
Abstract
The exploration of nucleoside changes in human biofluids has profound potential for cancer diagnosis. Herein, we developed a rapid methodology to quantify 17 nucleosides by UHPLC-MS/MS. Five pairs of isomers were successfully separated within 8 min. The ME was mostly eliminated by sample dilution folds of 1000 for urine and 40 for CCS. The optimized method was firstly applied to screen potential nucleoside biomarkers in CCS by comprising bladder cancer cell lines (5637 and T24) and normal human bladder cell line SV-HUC-1 together with student's t-test and OPLS-DA. Nucleosides with significant differences in the supernatant of urine samples were also uncovered comparing BCa with the non-tumor group, as well as a comparison of BCa recurrence group with the non-recurrence group. By intersecting the differential nucleosides in CCS and urine supernatant, and then further confirmed using validation sets, the combination of m3C and m1A with AUC of 0.775 was considered as a potential biomarker for bladder cancer diagnosis. A panel of m3C, m1A, m1G, and m22G was defined as potential biomarkers for bladder cancer prognosis with an AUC of 0.819. Above all, this method provided a new perspective for diagnosis and recurrence monitoring of bladder cancer. SIGNIFICANCE: The exploration of nucleoside changes in body fluids has profound potential for the diagnosis and elucidation of the pathogenesis of cancer. In this study, we developed a rapid methodology for the simultaneous quantitative determination of 17 nucleosides in the supernatant of cells and urine samples using UHPLC-MS/MS to discover and validate bladder cancer related excreted nucleoside biomarkers. The results of this paper provide a new strategy for diagnosis and postoperative recurrence monitoring of bladder cancer and provide theoretical support for the exploration of its pathogenesis.
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10
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Feng S, Zhang A, Wu F, Luo X, Zhang J. Boronic acid grafted metal-organic framework for selective enrichment of cis-diol-containing compounds. J Chromatogr A 2022; 1677:463281. [DOI: 10.1016/j.chroma.2022.463281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/22/2022] [Accepted: 06/24/2022] [Indexed: 10/17/2022]
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11
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In-situ growth of boronic acid-decorated metal-organic framework on Fe3O4 nanospheres for specific enrichment of cis-diol containing nucleosides. Anal Chim Acta 2022; 1206:339772. [DOI: 10.1016/j.aca.2022.339772] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 03/09/2022] [Accepted: 03/24/2022] [Indexed: 12/26/2022]
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BH +/MH +-matching method for discovery of cis-diol-containing modified nucleosides in urine by ribose-targeted solid phase extraction followed by dual-mass spectrometry platform identification. J Pharm Biomed Anal 2021; 210:114555. [PMID: 34974239 DOI: 10.1016/j.jpba.2021.114555] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 12/23/2021] [Accepted: 12/25/2021] [Indexed: 12/18/2022]
Abstract
Profiling of new modified nucleosides from urine plays an important role in exploring biomarkers for cancer. However, limitations from the nature of the compound, bio-sample, instrumentation, and analytical method pose great challenges to achieving a comprehensive analysis of urinary nucleosides. Herein, a method of BH+/MH+-matching (BH+, protonated nucleobase ion; MH+, protonated precursor ion) was developed to discover novel modified nucleosides from human urine samples based on solid phase extraction targeted toward specific modified nucleosides combined with ultra-performance liquid chromatography coupled with dual-mass spectrometry platforms. Firstly, nucleosides containing 2,3-diol structure on ribose were effectively enriched by PBA (Phenylboronic Acid) cartridges. Secondly, a novel method, "BH+/MH+-matching" was established to achieve rapid screening of modified nucleosides. Based on the in-source fragmentation pattern of nucleosides, a series of putative modified nucleosides were rationally designed and characterized by matching the daughter ion BH+ and its parent ion MH+ in UPLC-MSE spectra. Finally, as a complement to UPLC Q-TOF/MS, UPLC Q-Trap/MS was employed to validate the structure of putative compounds by MRM-IDA-EPI mode. Using the strategy, 12 new cis-diol-containing nucleoside analogs were successfully characterized, which were formed by modified base (m1A, m6A, m2,2,7G, ac4C) and modified ribose containing C5'-O-formylation or C5'-O-methylation. Taken together, the results demonstrated our strategy could efficiently support the rapid discovery of cis-diol-containing nucleosides with modifications on either ribose or base moiety (or both), which exhibited a promising perspective in the future application of biochemical analysis and clinical diagnosis.
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Approaching Sites of Action of Temozolomide for Pharmacological and Clinical Studies in Glioblastoma. Biomedicines 2021; 10:biomedicines10010001. [PMID: 35052681 PMCID: PMC8772814 DOI: 10.3390/biomedicines10010001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 12/15/2021] [Accepted: 12/16/2021] [Indexed: 12/11/2022] Open
Abstract
Temozolomide (TMZ), together with bulk resection and focal radiotherapy, is currently a standard of care for glioblastoma. Absorption, distribution, metabolism, and excretion (ADME) parameters, together with the mode of action of TMZ, make its biochemical and biological action difficult to understand. Accurate understanding of the mode of action of TMZ and the monitoring of TMZ at its anatomical, cellular, and molecular sites of action (SOAs) would greatly benefit precision medicine and the development of novel therapeutic approaches in combination with TMZ. In the present perspective article, we summarize the known ADME parameters and modes of action of TMZ, and we review the possible methodological options to monitor TMZ at its SOAs. We focus our descriptions of methodologies on mass spectrometry-based approaches, and all related considerations are taken into account regarding the avoidance of artifacts in mass spectrometric analysis during sampling, sample preparation, and the evaluation of results. Finally, we provide an overview of potential applications for precision medicine and drug development.
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14
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Gupta S, Sharma U. Metabolomics of neurological disorders in India. ANALYTICAL SCIENCE ADVANCES 2021; 2:594-610. [PMID: 38715858 PMCID: PMC10989583 DOI: 10.1002/ansa.202000169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 10/31/2021] [Accepted: 11/01/2021] [Indexed: 06/11/2024]
Abstract
Metabolomics is the comprehensive study of the metabolome and its alterations within biological fluids and tissues. Over the years, applications of metabolomics have been explored in several areas, including personalised medicine in diseases, metabolome-wide association studies (MWAS), pharmacometabolomics and in combination with other branches of omics such as proteomics, transcriptomics and genomics. Mass spectrometry (MS) and nuclear magnetic resonance (NMR) spectroscopy are the major analytical techniques widely employed in metabolomics. In addition, MS is coupled with chromatography techniques like gas chromatography (GC) and liquid chromatography (LC) to separate metabolites before analysis. These analytical techniques have made possible identification and quantification of large numbers of metabolites, encompassing characterization of diseases and facilitating a systematic and rational therapeutic strategy based on metabolic patterns. In recent years, the metabolomics approach has been used to obtain a deeper insight into the underlying biochemistry of neurodegenerative disorders and the discovery of biomarkers of clinical implications. The current review mainly focuses on an Indian perspective of metabolomics for the identification of metabolites and metabolic alterations serving as potential diagnostic biomarkers for neurological diseases including acute spinal cord injury, amyotrophic lateral sclerosis, tethered cord syndrome, spina bifida, stroke, Parkinson's disease, glioblastoma and neurological disorders with inborn errors of metabolism.
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Affiliation(s)
- Sangeetha Gupta
- Amity Institute of PharmacyAmity UniversityNoidaUttar PradeshIndia
| | - Uma Sharma
- Department of NMR & MRI FacilityAll India Institute of Medical SciencesNew DelhiIndia
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15
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Zhai X, Lin L, Wang Y, An H, Shen W, Chen R. A Carry‐On Kit Containing Electrospun Nanofibrous Affinity Membranes by Surface Grafting Phenylboronic Acid for Quantitative Enrichment of Nucleotides in Urine. ChemistrySelect 2021. [DOI: 10.1002/slct.202102893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xinhui Zhai
- School of Science China Pharmaceutical University Nanjing 211198 China
- Key Laboratory of Biomedical Functional Materials of China Pharmaceutical University Nanjing 211198 China
| | - Lulu Lin
- College of Chemistry Chemical Engineering and Biotechnology Donghua University No. 2999 North Renmin Road Shanghai 201620 China
| | - Yongxing Wang
- School of Science China Pharmaceutical University Nanjing 211198 China
- Key Laboratory of Biomedical Functional Materials of China Pharmaceutical University Nanjing 211198 China
| | - Haoyu An
- School of Science China Pharmaceutical University Nanjing 211198 China
| | - Weiyang Shen
- School of Science China Pharmaceutical University Nanjing 211198 China
- Key Laboratory of Drug Quality Control and Pharmacovigilance (China Pharmaceutical University) Ministry of Education Nanjing 211198 China
| | - Rong Chen
- School of Science China Pharmaceutical University Nanjing 211198 China
- Key Laboratory of Biomedical Functional Materials of China Pharmaceutical University Nanjing 211198 China
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16
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Amalric A, Bastide A, Attina A, Choquet A, Vialaret J, Lehmann S, David A, Hirtz C. Quantifying RNA modifications by mass spectrometry: a novel source of biomarkers in oncology. Crit Rev Clin Lab Sci 2021; 59:1-18. [PMID: 34473579 DOI: 10.1080/10408363.2021.1958743] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Despite significant progress in targeted therapies, cancer recurrence remains a major cause of mortality worldwide. Identification of accurate biomarkers, through molecular profiling in healthy and cancer patient samples, will improve diagnosis and promote personalized medicine. While genetic and epigenetic alterations of DNA are currently exploited as cancer biomarkers, their robustness is limited by tumor heterogeneity. Recently, cancer-associated changes in RNA marks have emerged as a promising source of diagnostic and prognostic biomarkers. RNA epigenetics (also known as epitranscriptomics) is an emerging field in which at least 150 chemical modifications in all types of RNA (mRNA, tRNA, lncRNA, rRNA, and microRNA) have been detected. These modifications fine-tune gene expression in both physiological and pathological processes. A growing number of studies have established links between specific modified nucleoside levels in solid/liquid biopsies, and cancer onset and progression. In this review, we highlight the potential role of epitranscriptomic markers in refining cancer diagnosis and/or prognosis. RNA modification patterns may contain important information for establishing an initial diagnosis, monitoring disease evolution, and predicting response to treatment. Furthermore, recent developments in mass spectrometry allow reliable quantification of RNA marks in solid biopsies and biological fluids. We discuss the great potential of mass spectrometry for identifying epitranscriptomic biomarker signatures in cancer diagnosis. While there are various methods to quantify modified nucleosides, most are unable to detect and quantify more than one type of RNA modification at a time. Mass spectrometry analyses, especially GC-MS/MS and LC-MS/MS, overcome this limitation and simultaneously detect modified nucleosides by multiple reaction monitoring. Indeed, several groups are currently validating mass spectrometry methods that quantify several nucleosides at one time in liquid biopsies. The challenge now is to exploit these powerful analytical tools to establish epitranscriptomic signatures that should open new perspectives in personalized medicine. This review summarizes the growing clinical field of analysis of RNA modifications and discusses pre-analytical and analytical approaches, focusing in particular on the development of new mass spectrometry tools and their clinical applications.
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Affiliation(s)
- Amandine Amalric
- IGF, University of Montpellier, CNRS, INSERM, Montpellier, France.,University of Montpellier, IRMB-PPC, INM, CHU Montpellier, INSERM CNRS, Montpellier, France
| | - Amandine Bastide
- IGF, University of Montpellier, CNRS, INSERM, Montpellier, France
| | - Aurore Attina
- University of Montpellier, IRMB-PPC, INM, CHU Montpellier, INSERM CNRS, Montpellier, France
| | - Armelle Choquet
- IGF, University of Montpellier, CNRS, INSERM, Montpellier, France
| | - Jerome Vialaret
- University of Montpellier, IRMB-PPC, INM, CHU Montpellier, INSERM CNRS, Montpellier, France
| | - Sylvain Lehmann
- University of Montpellier, IRMB-PPC, INM, CHU Montpellier, INSERM CNRS, Montpellier, France
| | - Alexandre David
- IGF, University of Montpellier, CNRS, INSERM, Montpellier, France.,University of Montpellier, IRMB-PPC, INM, CHU Montpellier, INSERM CNRS, Montpellier, France
| | - Christophe Hirtz
- University of Montpellier, IRMB-PPC, INM, CHU Montpellier, INSERM CNRS, Montpellier, France
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17
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Hayat F, Sonavane M, Makarov MV, Trammell SAJ, McPherson P, Gassman NR, Migaud ME. The Biochemical Pathways of Nicotinamide-Derived Pyridones. Int J Mol Sci 2021; 22:ijms22031145. [PMID: 33498933 PMCID: PMC7866226 DOI: 10.3390/ijms22031145] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 01/18/2021] [Accepted: 01/19/2021] [Indexed: 02/07/2023] Open
Abstract
As catabolites of nicotinamide possess physiological relevance, pyridones are often included in metabolomics measurements and associated with pathological outcomes in acute kidney injury (AKI). Pyridones are oxidation products of nicotinamide, its methylated form, and its ribosylated form. While they are viewed as markers of over-oxidation, they are often wrongly reported or mislabeled. To address this, we provide a comprehensive characterization of these catabolites of vitamin B3, justify their nomenclature, and differentiate between the biochemical pathways that lead to their generation. Furthermore, we identify an enzymatic and a chemical process that accounts for the formation of the ribosylated form of these pyridones, known to be cytotoxic. Finally, we demonstrate that the ribosylated form of one of the pyridones, the 4-pyridone-3-carboxamide riboside (4PYR), causes HepG3 cells to die by autophagy; a process that occurs at concentrations that are comparable to physiological concentrations of this species in the plasma in AKI patients.
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Affiliation(s)
- Faisal Hayat
- Department of Pharmacology, College of Medicine, University of South Alabama, Mobile, AL 36688, USA; (F.H.); (M.S.)
- Mitchell Cancer Institute, College of Medicine, University of South Alabama, Mobile, AL 36604, USA; (M.V.M.); (P.M.); (N.R.G.)
| | - Manoj Sonavane
- Department of Pharmacology, College of Medicine, University of South Alabama, Mobile, AL 36688, USA; (F.H.); (M.S.)
- Mitchell Cancer Institute, College of Medicine, University of South Alabama, Mobile, AL 36604, USA; (M.V.M.); (P.M.); (N.R.G.)
- Department of Physiology & Cell Biology, College of Medicine, University of South Alabama, Mobile, AL 36688, USA
| | - Mikhail V. Makarov
- Mitchell Cancer Institute, College of Medicine, University of South Alabama, Mobile, AL 36604, USA; (M.V.M.); (P.M.); (N.R.G.)
| | - Samuel A. J. Trammell
- Novo Nordisk Foundation, Center for Basic Metabolic Research, University of Copenhagen, 2200 Copenhagen, Denmark;
| | - Pamela McPherson
- Mitchell Cancer Institute, College of Medicine, University of South Alabama, Mobile, AL 36604, USA; (M.V.M.); (P.M.); (N.R.G.)
| | - Natalie R. Gassman
- Mitchell Cancer Institute, College of Medicine, University of South Alabama, Mobile, AL 36604, USA; (M.V.M.); (P.M.); (N.R.G.)
- Department of Physiology & Cell Biology, College of Medicine, University of South Alabama, Mobile, AL 36688, USA
| | - Marie E. Migaud
- Department of Pharmacology, College of Medicine, University of South Alabama, Mobile, AL 36688, USA; (F.H.); (M.S.)
- Mitchell Cancer Institute, College of Medicine, University of South Alabama, Mobile, AL 36604, USA; (M.V.M.); (P.M.); (N.R.G.)
- Correspondence:
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18
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Stockert JA, Weil R, Yadav KK, Kyprianou N, Tewari AK. Pseudouridine as a novel biomarker in prostate cancer. Urol Oncol 2021; 39:63-71. [PMID: 32712138 PMCID: PMC7880613 DOI: 10.1016/j.urolonc.2020.06.026] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 06/16/2020] [Accepted: 06/21/2020] [Indexed: 01/25/2023]
Abstract
Epitranscriptomic analysis has recently led to the profiling of modified nucleosides in cancer cell biological matrices, helping to elucidate their functional roles in cancer and reigniting interest in exploring their use as potential markers of cancer development and progression. Pseudouridine, one of the most well-known and the most abundant of the RNA nucleotide modifications, is the C5-glycoside isomer of uridine and its distinctive physiochemical properties allows it to perform many essential functions. Pseudouridine functionally (a) confers rigidity to local RNA structure by enhancing RNA stacking, engaging in a cooperative effect on neighboring nucleosides that overall contributes to RNA stabilization (b) refines the structure of tRNAs, which influences their decoding activity (c) facilitates the accuracy of decoding and proofreading during translation and efficiency of peptide bond formation, thus collectively improving the fidelity of protein biosynthesis and (e) dynamically regulates mRNA coding and translation. Biochemical synthesis of pseudouridine is carried out by pseudouridine synthases. In this review we discuss the evidence supporting an association between elevated pseudouridine levels with the incidence and progression of human prostate cancer and the translational significance of the value of this modified nucleotide as a novel biomarker in prostate cancer progression to advanced disease.
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Affiliation(s)
- Jennifer A Stockert
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029
| | - Rachel Weil
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029
| | - Kamlesh K Yadav
- Department of Engineering Medicine, Texas A&M Health Science Center College of Medicine, Houston, TX 77030
| | - Natasha Kyprianou
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029; Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, NY 10029.
| | - Ashutosh K Tewari
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029
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19
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Neef SK, Winter S, Hofmann U, Mürdter TE, Schaeffeler E, Horn H, Buck A, Walch A, Hennenlotter J, Ott G, Fend F, Bedke J, Schwab M, Haag M. Optimized protocol for metabolomic and lipidomic profiling in formalin-fixed paraffin-embedded kidney tissue by LC-MS. Anal Chim Acta 2020; 1134:125-135. [DOI: 10.1016/j.aca.2020.08.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 07/31/2020] [Accepted: 08/02/2020] [Indexed: 12/16/2022]
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20
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Yang Y, Zhang F, Gao S, Wang Z, Li M, Wei H, Zhong R, Chen W. Simultaneous Determination of 34 Amino Acids in Tumor Tissues from Colorectal Cancer Patients Based on the Targeted UHPLC-MS/MS Method. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2020; 2020:4641709. [PMID: 32802550 PMCID: PMC7416278 DOI: 10.1155/2020/4641709] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 04/22/2020] [Accepted: 05/01/2020] [Indexed: 06/11/2023]
Abstract
A targeted ultrahigh-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) method was established and validated for the simultaneous determination of 34 amino acids in tissue samples from colorectal cancer (CRC) patients. The chromatographic separation was achieved on an Agilent ZORBAX SB-C18 column (3.0 × 150 mm, 5 μm) with a binary gradient elution system (A, 0.02% heptafluorobutyric acid and 0.2% formic acid in water, v/v; B, methanol). The run time was 10 min. The multiple reaction monitoring mode was chosen with an electrospray ionization source operating in the positive ionization mode for data acquisition. The linear correlation coefficients were >0.99 for all the analytes in their corresponding calibration ranges. The sample was pretreated based on tissue homogenate and protein precipitation with a 100 mg aliquot sample. The average recovery and matrix effect for 34 amino acids and 3 internal standards were 39.00%∼146.95% and 49.45%∼173.63%, respectively. The intra- and interday accuracy for all the analytes ranged from -13.52% to 14.21% (RSD ≤8.57%) and from -14.52% to 12.59% (RSD ≤10.31%), respectively. Deviations of stability under different conditions were within ±15% for all the analytes. This method was applied to simultaneous quantification of 34 amino acids in tissue samples from 94 CRC patients.
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Affiliation(s)
- Yang Yang
- Department of Pharmacy, Changzheng Hospital, The Second Military Medical University of CPLA, Shanghai 200003, China
- Department of Pharmacy, The 71st Group Army Hospital of CPLA Army, The Affiliated Huaihai Hospital of Xuzhou Medical University, Xuzhou 221004, China
- Department of Laboratory Diagnostics, Changzheng Hospital, The Second Military Medical University of CPLA, Shanghai 200003, China
| | - Feng Zhang
- Department of Pharmacy, Changzheng Hospital, The Second Military Medical University of CPLA, Shanghai 200003, China
| | - Shouhong Gao
- Department of Pharmacy, Changzheng Hospital, The Second Military Medical University of CPLA, Shanghai 200003, China
| | - Zhipeng Wang
- Department of Pharmacy, Changzheng Hospital, The Second Military Medical University of CPLA, Shanghai 200003, China
| | - Mingming Li
- Department of Pharmacy, Changzheng Hospital, The Second Military Medical University of CPLA, Shanghai 200003, China
| | - Hua Wei
- Department of Pharmacy, Changzheng Hospital, The Second Military Medical University of CPLA, Shanghai 200003, China
| | - Renqian Zhong
- Department of Laboratory Diagnostics, Changzheng Hospital, The Second Military Medical University of CPLA, Shanghai 200003, China
| | - Wansheng Chen
- Department of Pharmacy, Changzheng Hospital, The Second Military Medical University of CPLA, Shanghai 200003, China
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