1
|
Wang Z, Huang C, Wei S, Zhu P, Li Y, Fu W, Zhang Y. A CRISPR/Cas12a-mediated sensitive DNA detection system for gene-edited rice. J AOAC Int 2023; 106:558-567. [PMID: 36847422 DOI: 10.1093/jaoacint/qsad022] [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: 11/03/2022] [Revised: 01/10/2023] [Accepted: 01/17/2023] [Indexed: 03/01/2023]
Abstract
BACKGROUND In recent years, genome editing technology represented by CRISPR/Cas9 has been developed and applied in transgenic research and development, and transgenic products have been developed for a variety of applications. Gene editing products, unlike traditional genetically modified crops, which are generally obtained by target gene deletion, insertion, base mutation, etc., may not differ significantly at the gene level from conventional crops, which increases the complexity of testing. OBJECTIVE We established a specific and sensitive CRISPR/Cas12a-mediated gene-editing system to detect target fragments in a variety of transgenic rice lines and commercial rice-based processing products. METHOD In this study, the CRISPR-Cas12a visible detection system was optimized for the visualization of nucleic acid detection in gene-edited rice. The fluorescence signals were detected by both gel electrophoresis and fluorescence-based methods. RESULT The detection limit of the CRISPR-Cas12a detection system established in this study was more precise at 101 copies, demonstrating that CRISPR-Cas12a detection technology is better for low-concentration samples. In addition to achieving single-base detection in gene-edited rice, we showed that different base mutations in the target sequence have different detection efficiencies by sitewise variant compact analysis. The CRISPR-Cas12a system was verified via a common transgenic rice strain and commercial rice sources. The results proved that the detection method could not only be tested in samples with multiple mutation types but could also effectively detect target fragments in commercial rice products. CONCLUSION We have developed a set of efficient detection methods with CRISPR-Cas12a for gene-edited rice detection to provide a new technical basis for rapid field detection of gene-edited rice. HIGHLIGHTS The CRISPR/Cas12a-mediated visual detection method used to detect gene-edited rice was evaluated for its specificity, sensitivity, and robustness.
Collapse
Affiliation(s)
- Zhi Wang
- Chinese Academy of Inspection and Quarantine, Beijing, 100176 People's Republic of China
| | - Chunmeng Huang
- Chinese Academy of Inspection and Quarantine, Beijing, 100176 People's Republic of China.,Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100081 People's Republic of China
| | - Shuang Wei
- Guangzhou Customs Technical Center, Guangzhou, 510623 People's Republic of China
| | - Pengyu Zhu
- Chinese Academy of Inspection and Quarantine, Beijing, 100176 People's Republic of China
| | - Yiming Li
- Chinese Academy of Inspection and Quarantine, Beijing, 100176 People's Republic of China.,College of Plant Protection, China Agricultural University, Beijing, 100193 People's Republic of China
| | - Wei Fu
- Chinese Academy of Inspection and Quarantine, Beijing, 100176 People's Republic of China
| | - Yongjiang Zhang
- Chinese Academy of Inspection and Quarantine, Beijing, 100176 People's Republic of China
| |
Collapse
|
2
|
Weiss-Tessbach M, Ratzinger F, Obermueller M, Burgmann H, Staudinger T, Robak O, Schmid M, Roessler B, Jilma B, Kussmann M, Traby L. Biomarkers for differentiation of coronavirus disease 2019 or extracorporeal membrane oxygenation related inflammation and bacterial/fungal infections in critically ill patients: A prospective observational study. Front Med (Lausanne) 2022; 9:917606. [PMID: 36275812 PMCID: PMC9582266 DOI: 10.3389/fmed.2022.917606] [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: 04/11/2022] [Accepted: 09/14/2022] [Indexed: 11/13/2022] Open
Abstract
Secondary infections in coronavirus disease 2019 (COVID-19) patients are difficult to distinguish from inflammation associated with COVID-19 and/or extracorporeal membrane oxygenation (ECMO). Therefore, highly specific and sensitive biomarkers are needed to identify patients in whom antimicrobial therapy can be safely withheld. In this prospective monocentric study, 66 COVID-19 patients admitted to the intensive care unit (ICU) for ECMO evaluation were included. A total of 46 (70%) patients with secondary infections were identified by using broad microbiological and virological panels and standardized diagnostic criteria. Various laboratory parameters including C-reactive protein (CRP), interleukin (IL)-6, procalcitonin (PCT), and IL-10 were determined at time of study inclusion. The best test performance for differentiating bacterial/fungal secondary infections and COVID-19 and/or ECMO associated inflammation was achieved by IL-10 (ROC-AUC 0.84) and a multivariant step-wise regression model including CRP, IL-6, PCT, and IL-10 (ROC-AUC 0.93). Data obtained in the present study highlights the use of IL-10 to differentiate secondary bacterial/fungal infections from COVID-19 and/or ECMO associated inflammation in severely ill COVID-19 patients.
Collapse
Affiliation(s)
- Matthias Weiss-Tessbach
- Division of Infectious Diseases and Tropical Medicine, Department of Medicine I, Medical University of Vienna, Vienna, Austria,Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Franz Ratzinger
- Ihr Labor, Medical Diagnostics Laboratories, Vienna, Austria
| | - Markus Obermueller
- Division of Infectious Diseases and Tropical Medicine, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Heinz Burgmann
- Division of Infectious Diseases and Tropical Medicine, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Thomas Staudinger
- Department of Medicine I, Intensive Care Unit 13i2, Medical University of Vienna, Vienna, Austria
| | - Oliver Robak
- Department of Medicine I, Intensive Care Unit 13i2, Medical University of Vienna, Vienna, Austria
| | - Monika Schmid
- Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Bernhard Roessler
- Department of Anaesthesia, Intensive Care Medicine and Pain Medicine, Medical Simulation and Emergency Management Research Group, Medical University of Vienna, Vienna, Austria
| | - Bernd Jilma
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Manuel Kussmann
- Division of Infectious Diseases and Tropical Medicine, Department of Medicine I, Medical University of Vienna, Vienna, Austria,*Correspondence: Manuel Kussmann,
| | - Ludwig Traby
- Division of Infectious Diseases and Tropical Medicine, Department of Medicine I, Medical University of Vienna, Vienna, Austria,Ludwig Traby,
| |
Collapse
|
3
|
P Lima J, Carvalho J, Quaresma V, Tavares-da-Silva E, Silva R, Azinhais P, Costa G, Figueiredo A. The Role of Ga-68-PSMA PET/CT in the Initial Staging of Prostate Cancer - A Single Center 4 Year Experience. Res Rep Urol 2021; 13:479-485. [PMID: 34268257 PMCID: PMC8275176 DOI: 10.2147/rru.s310226] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 06/25/2021] [Indexed: 11/23/2022] Open
Abstract
Background Recommended imaging modalities for prostate cancer staging have disappointing sensitivities, whereas [68Ga]-PSMA PET/CT (PET-PSMA) shows promising sensitivities and specificities in the initial management of prostate cancer. Recent studies have revealed that a significant change of management when PET-PSMA was used, with favorable negative predictive values. Methods In this retrospective study, we analyzed every PET-PSMA performed in our center for initial staging of intermediate and high-risk prostate cancer. Patients were divided into two groups based on whether imaging modalities other than PET-PSMA were performed. In patients submitted to radical prostatectomy, PET-PSMA findings were compared to histological analysis of the specimen. Results PET-PSMA results of 57 patients were gathered, with 77.2% (n=44) having performed CT scan or bone scan (BS) prior to PET-PSMA. Prostate cancer management strategy was changed in 61.4% (n=27), when PET-PSMA was performed following CT and BS. BS and CT results were consistent with PET-PSMA in 43.2% and 44.8%, respectively. In 30 cases, a curative strategy was used based on PET-PSMA findings. PET-PSMA revealed a negative predictive value of 95.2% in 23 patients submitted to radical prostatectomy with bilateral pelvic lymphadenectomy. Prostate SUV values on preoperative PET-PSMA correlated with initial PSA, ISUP grade, PC risk staging and presence of extraprostatic lesions. Conclusions PET-PSMA is a key element for prostate cancer staging and management, with high diagnostic accuracy. More prospective studies need to be implemented to determine its role as a first-line staging tool.
Collapse
Affiliation(s)
- João P Lima
- Urology and Renal Transplantation Department, Coimbra University Hospital Center, Coimbra, Portugal
| | - João Carvalho
- Urology and Renal Transplantation Department, Coimbra University Hospital Center, Coimbra, Portugal
| | - Vasco Quaresma
- Urology and Renal Transplantation Department, Coimbra University Hospital Center, Coimbra, Portugal
| | - Edgar Tavares-da-Silva
- Urology and Renal Transplantation Department, Coimbra University Hospital Center, Coimbra, Portugal
| | - Rodolfo Silva
- Nuclear Medicine Department, Coimbra University Hospital Centre, Coimbra, Portugal
| | - Paulo Azinhais
- Nuclear Medicine Department, Coimbra University Hospital Centre, Coimbra, Portugal
| | - Gracinda Costa
- Nuclear Medicine Department, Coimbra University Hospital Centre, Coimbra, Portugal
| | - Arnaldo Figueiredo
- Urology and Renal Transplantation Department, Coimbra University Hospital Center, Coimbra, Portugal
| |
Collapse
|
4
|
Shahriari N, Grant-Kels JM, Rabinovitz H, Oliviero M, Scope A. Reflectance confocal microscopy: Principles, basic terminology, clinical indications, limitations, and practical considerations. J Am Acad Dermatol 2020; 84:1-14. [PMID: 32553679 DOI: 10.1016/j.jaad.2020.05.153] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [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: 02/25/2020] [Revised: 05/09/2020] [Accepted: 05/12/2020] [Indexed: 12/24/2022]
Abstract
Reflectance confocal microscopy (RCM) is a noninvasive imaging tool used for in vivo visualization of the skin. It has been extensively studied for use in the evaluation of equivocal cutaneous neoplasms to decrease the number of biopsy procedures in patients with benign lesions. Furthermore, its applications are broadening to include presurgical cancer margin mapping, tumor recurrence surveillance, monitoring of ablative and noninvasive therapies, and stratification of inflammatory disorders. With the approval of category I Current Procedural Terminology reimbursement codes for RCM image acquisition and interpretation, use of this technology has been increasingly adopted by dermatologists. The first article in this 2-part continuing medical education series highlights basic terminology, principles, clinical applications, limitations, and practical considerations in the clinical use of RCM technology.
Collapse
Affiliation(s)
- Neda Shahriari
- Department of Dermatology, University of Connecticut Health Center, Farmington, Connecticut.
| | - Jane M Grant-Kels
- Department of Dermatology, University of Connecticut Health Center, Farmington, Connecticut; Department of Dermatology, University of Florida, Gainesville, Florida
| | - Harold Rabinovitz
- Skin and Cancer Associates, Plantation, Florida; Dermatology Department, Medical College of Georgia at Augusta University, Augusta, Georgia
| | | | - Alon Scope
- The Kittner Skin Cancer Screening and Research Institute, Sheba Medical Center and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; Dermatology Service, Memorial Sloan-Kettering Center, New York, New York
| |
Collapse
|
5
|
Yu Q, Liu M, Xiao H, Wu S, Qin X, Ke K, Li S, Mi H, Shi D, Li P. Development of novel aptamer-based enzyme-linked apta-sorbent assay (ELASA) for rapid detection of mariculture pathogen Vibrio alginolyticus. J Fish Dis 2019; 42:1523-1529. [PMID: 31448425 DOI: 10.1111/jfd.13066] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 05/29/2019] [Revised: 07/13/2019] [Accepted: 07/15/2019] [Indexed: 06/10/2023]
Abstract
As the major opportunistic pathogen to both marine animals and humans, Vibrio alginolyticus (V. alginolyticus) has caused heavy economic losses to mariculture. ssDNA aptamer VA2 targeting live V. alginolyticus was generated by systematic evolution of ligands by exponential enrichment (SELEX) technology in our previous study. In this study, we first developed aptamer (VA2)-based enzyme-linked apta-sorbent assay (VA2-ELASA) for rapid detection of mariculture pathogen V. alginolyticus. The VA2-ELASA could achieve the rapid detection for V. alginolyticus infection with high specificity and sensitivity. The VA2-ELASA could specifically identify V. alginolyticus, but not other non-target bacterial strains. VA2-ELASA could detect V. alginolyticus at the concentration of 5 × 104 /ml, the incubation time short to 1 min and the incubation temperature as high as 45°C, which proved sensitivity and stability of the novel VA2-ELASA in this study. It took less than one hour to accomplish the detection process by VA2-ELASA. The characteristics of specificity, sensitivity and easy operation make VA2-ELASA a novel useful technology for the rapid diagnosis of pathogen V. alginolyticus in mariculture.
Collapse
Affiliation(s)
- Qing Yu
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Guangxi Academy of Sciences, Nanning, China
| | - Mingzhu Liu
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Guangxi Academy of Sciences, Nanning, China
| | - Hehe Xiao
- College of Life Science, Henan Normal University, Xinxiang, China
- Guangxi Key Lab for Marine Biotechnology, Beihai, China
| | - Siting Wu
- Guangxi Key Lab for Marine Biotechnology, Beihai, China
- College of Marine Sciences, South China Agricultural University, Guangzhou, China
| | - Xianling Qin
- Guangxi Key Laboratory of Marine Environmental Science, Nanning, China
| | - Ke Ke
- Guangxi Key Laboratory of Marine Environmental Science, Nanning, China
| | - Siqiao Li
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Guangxi Academy of Sciences, Nanning, China
| | - Huizhi Mi
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Guangxi Academy of Sciences, Nanning, China
| | - Deqiang Shi
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Guangxi Academy of Sciences, Nanning, China
| | - Pengfei Li
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Guangxi Academy of Sciences, Nanning, China
- Guangxi Key Lab for Marine Biotechnology, Beihai, China
| |
Collapse
|
6
|
Abstract
Background: Scoring systems are useful to inform the patients about the success and complication rates of the operation prior the surgery. Aims: To determine the applicability of the popular scoring systems (Guy’s, stone size, tract length, obstruction, number of involved calices, and essence/stone density and Clinical Research Office of the Endourological Society) by means of examining preoperative data of patients treated with percutaneous nephrolithotomy. Study Design: Cross sectional study. Methods: We retrospectively reviewed files of the patients who had undergone percutaneous nephrolithotomy in our center between 2011 and 2015. Excluded from the study were patients aged <18 years, and those who were not assessed preoperatively with computed tomography. Preoperative computed tomography images of all patients were assessed by a single observer, and patients were graded based on three scoring system. Demographic data were analyzed along with perioperative data (operation, fluoroscopy, length of hospital stay, changes in hematocrit values, location, and number of access sites, stone-free and complication rates). Results: A total of 298 patients who had been treated with 300 procedures were enrolled into the study. Mean age, stone burden, number of stones, and density were 48.1±12.9 years, 663.5±442.8 mm2, 1.8±1.1 and 888.3±273 HU respectively. Scores of the cases based on Guy’s, stone size, tract length, obstruction, number of involved calices, and essence/stone density, and Clinical Research Office of the Endourological Society scoring system were calculated as 2, 7.6, and 222.1 points respectively. 81.6% of the patients were stone-free. Complications were detected in 30 (9.9%) patients. Based on receiver operating characteristic curve analysis a positive correlation was detected between success rate and scoring systems, i.e., Guy’s (p=<0.001, r=-0.309), stone size, tract length, obstruction, number of involved calices, and essence/stone density (p=<0.001, r=-0.295), and Clinical Research Office of the Endourological Society (p=<0.001, r=0.426). The Clinical Research Office of the Endourological Society scoring system had the highest predictive value. The sensitivity rates rates for Guy’s, Clinical Research Office of the Endourological Society and Stone scoring system were as 78.78%, 80% and 82.34% respectively. Conclusion: All of scoring systems predicted correctly the success of the percutaneous nephrolithotomy procedures. The Clinical Research Office of the Endourological Society scoring system had the highest predictive value.
Collapse
Affiliation(s)
- Muzaffer Akçay
- Department of Urology, Bezmialem Vakıf University School of Medicine, İstanbul, Turkey
| | - Muhammed Tosun
- Department of Urology, Bezmialem Vakıf University School of Medicine, İstanbul, Turkey
| | - Fatih Gevher
- Department of Urology, Bezmialem Vakıf University School of Medicine, İstanbul, Turkey
| | - Senad Kalkan
- Department of Urology, Bezmialem Vakıf University School of Medicine, İstanbul, Turkey
| | - Cevper Ersöz
- Department of Urology, Bezmialem Vakıf University School of Medicine, İstanbul, Turkey
| | - Yunus Kayalı
- Department of Urology, Bezmialem Vakıf University School of Medicine, İstanbul, Turkey
| | - Abdulkadir Tepeler
- Clinic of Urology, Private Sen Jorj Avusturya Hospital, İstanbul, Turkey
| |
Collapse
|
7
|
Nallagangula KS, Shashidhar KN, Lakshmaiah V, Muninarayana. Evolution of proteomic biomarker for chronic liver disease: Promise into reality. J Circ Biomark 2018; 7:1849454418777186. [PMID: 29854010 PMCID: PMC5971380 DOI: 10.1177/1849454418777186] [Citation(s) in RCA: 3] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Accepted: 04/18/2018] [Indexed: 01/22/2023] Open
Abstract
Liver is the vital organ for synthesis of proteins whose concentration in blood reflects liver dysfunction. Variations in protein domain can generate clinically significant biomarkers. Biomarker pipeline includes discovery of candidates, qualification, verification, assay optimization, and validation. Advances in proteomic approach can discover protein biomarker candidates based on “up-or-down” regulation or fold change in expression which is correlated with disease state. Despite numerous biomarker candidates been discovered, only few are useful in clinical practice which indicates the need for well-established validation regimen. Hence, the main purpose of this review is to understand the protein biomarker development and pitfalls. Companion diagnostics provide insights into potential cost-effective diagnosis for chronic liver disease.
Collapse
Affiliation(s)
| | - K N Shashidhar
- Department of Biochemistry, Sri Devaraj Urs Medical College, SDUAHER, Karnataka, India
| | - V Lakshmaiah
- Department of Medicine, Sri Devaraj Urs Medical College, SDUAHER, Karnataka, India
| | - Muninarayana
- Department of Community Medicine, Sri Devaraj Urs Medical College, SDUAHER, Karnataka, India
| |
Collapse
|
8
|
Abdel Wahab AHA, El-Halawany MS, Emam AA, Elfiky A, Abd Elmageed ZY. Identification of circulating protein biomarkers in patients with hepatocellular carcinoma concomitantly infected with chronic hepatitis C virus. Biomarkers 2016; 22:621-628. [PMID: 27788588 DOI: 10.1080/1354750x.2016.1252966] [Citation(s) in RCA: 8] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
CONTEXT The incidence rate of hepatocellular carcinoma (HCC) is higher in developing countries, and most cases are associated with chronic hepatitis C virus (HCV) infection. OBJECTIVE To evaluate the circulating proteins as liver biomarkers for the identification of HCC associated with HCV infection in Egyptian patients using LC-MS/MS analysis. METHODS Blood sera were collected from 31 HCC patients and the fractionated proteins were subjected to LC-MS/MS analysis. Protein candidates were validated by enzyme-linked immunosorbent assay (ELISA). RESULTS Thirty-three proteins were significantly identified in the sera of HCC patients with persistent HCV infection. These proteins are involved in several biological processes including acute phase response, complement activation, hemostasis process and lipid metabolism. The level of lectin galactoside-binding soluble 3 binding protein (LGALS3BP), Kininogen-1 (KNG1), serum amyloid A2 (SAA2) and paraoxonase 1 (PON1) and alpha-fetoprtoein (AFP) were elevated in serum. CONCLUSION In HCC patients with chronic HCV infection, we identified a group of differentially expressed circulating proteins involved in regulating different cellular mechanisms.
Collapse
Affiliation(s)
| | | | - Ahmad A Emam
- a Department of Cancer Biology , National Cancer Institute, Cairo University , Cairo , Egypt
| | - Ammar Elfiky
- a Department of Cancer Biology , National Cancer Institute, Cairo University , Cairo , Egypt
| | | |
Collapse
|