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Villiers L, Caspar Y, Marche H, Boccoz S, Maurin M, Marche P, Morand P, Marquette C, Corgier B. ReSynPlex: Respiratory Syndrome Linked Pathogens Multiplex Detection and Characterization. Ing Rech Biomed 2018. [DOI: 10.1016/j.irbm.2018.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Chang B, Kivinen O, Pini I, Levkin PA, Ras RHA, Zhou Q. Nanoliter deposition on star-shaped hydrophilic-superhydrophobic patterned surfaces. SOFT MATTER 2018; 14:7500-7506. [PMID: 30152827 DOI: 10.1039/c8sm01288a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Nanoliter sized droplet deposition has gained increasing importance in many biomedical, chemical, and microfluidic applications and in materials synthesis. In this paper, we report a simple method for rapid and high-throughput deposition of nanoliter-sized droplets by dragging a larger droplet on star-shaped hydrophilic-superhydrophobic patterned surfaces. Dragging a droplet on the patterned surface causes water to adhere to hydrophilic patterns. As the larger mother droplet detaches from a star-shaped pattern, a small daughter droplet is deposited on the pattern. Star-shaped hydrophilic patterns with a distinct number of spikes are fabricated and investigated. Systematic tests are carried out to study the influence of different process parameters including the volume of a mother droplet, the dragging velocity, the number of spikes and the dragging directions to the deposition process. The results indicate that creating microarrays by dragging large droplets on patterned hydrophilic-superhydrophobic surfaces yield a reliable, cost-efficient, high-accuracy and easily scalable deposition. The volume of the daughter droplet grows with the velocity of the mother droplet and the number of spikes in a pattern, and decreases with the volume of the mother droplet.
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Affiliation(s)
- Bo Chang
- College of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi'An 710021, P. R. China
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Xu T, Zhang Q, Fan YH, Li RQ, Lu H, Zhao SM, Jiang TL. Quantitative and multiplexed detection for blood typing based on quantum dot-magnetic bead assay. Int J Nanomedicine 2017; 12:3347-3356. [PMID: 28490874 PMCID: PMC5413539 DOI: 10.2147/ijn.s133247] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Background Accurate and reliable blood grouping is essential for safe blood transfusion. However, conventional methods are qualitative and use only single-antigen detection. We overcame these limitations by developing a simple, quantitative, and multiplexed detection method for blood grouping using quantum dots (QDs) and magnetic beads. Methods In the QD fluorescence assay (QFA), blood group A and B antigens were quantified using QD labeling and magnetic beads, and the blood groups were identified according to the R value (the value was calculated with the fluorescence intensity from dual QD labeling) of A and B antigens. The optimized performance of QFA was established by blood typing 791 clinical samples. Results Quantitative and multiplexed detection for blood group antigens can be completed within 35 min with more than 105 red blood cells. When conditions are optimized, the assay performance is satisfactory for weak samples. The coefficients of variation between and within days were less than 10% and the reproducibility was good. The ABO blood groups of 791 clinical samples were identified by QFA, and the accuracy obtained was 100% compared with the tube test. Receiver-operating characteristic curves revealed that the QFA has high sensitivity and specificity toward clinical samples, and the cutoff points of the R value of A and B antigens were 1.483 and 1.576, respectively. Conclusion In this study, we reported a novel quantitative and multiplexed method for the identification of ABO blood groups and presented an effective alternative for quantitative blood typing. This method can be used as an effective tool to improve blood typing and further guarantee clinical transfusion safety.
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Affiliation(s)
- Ting Xu
- Department of Transfusion Medicine, Southwest Hospital, Third Military Medical University, Chongqing, People's Republic of China
| | - Qiang Zhang
- Department of Transfusion Medicine, Southwest Hospital, Third Military Medical University, Chongqing, People's Republic of China
| | - Ya-Han Fan
- Department of Transfusion Medicine, Southwest Hospital, Third Military Medical University, Chongqing, People's Republic of China
| | - Ru-Qing Li
- Department of Transfusion Medicine, Southwest Hospital, Third Military Medical University, Chongqing, People's Republic of China
| | - Hua Lu
- Department of Transfusion Medicine, Southwest Hospital, Third Military Medical University, Chongqing, People's Republic of China
| | - Shu-Ming Zhao
- Department of Transfusion Medicine, Southwest Hospital, Third Military Medical University, Chongqing, People's Republic of China
| | - Tian-Lun Jiang
- Department of Transfusion Medicine, Southwest Hospital, Third Military Medical University, Chongqing, People's Republic of China
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Ba A, Bagayoko S, Chiaroni J, Baiily P, Silvy M. Genotyping of 28 blood group alleles in blood donors from Mali: Prediction of rare phenotypes. Transfus Apher Sci 2016; 54:289-95. [DOI: 10.1016/j.transci.2015.10.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Revised: 10/26/2015] [Accepted: 10/28/2015] [Indexed: 11/28/2022]
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Boccoz SA, Le Goff GC, Mandon CA, Corgier BP, Blum LJ, Marquette CA. Development and Validation of a Fully Automated Platform for Extended Blood Group Genotyping. J Mol Diagn 2015; 18:144-52. [PMID: 26621100 DOI: 10.1016/j.jmoldx.2015.09.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 09/27/2014] [Accepted: 09/09/2015] [Indexed: 12/20/2022] Open
Abstract
Thirty-five blood group systems, containing >300 antigens, are listed by the International Society of Blood Transfusion. Most of these antigens result from a single nucleotide polymorphism. Blood group typing is conventionally performed by serology. However, this technique has some limitations and cannot respond to the growing demand of blood products typed for a large number of antigens. The knowledge of the molecular basis of these red blood cell systems allowed the implementation of molecular biology methods in immunohematology laboratories. Here, we describe a blood group genotyping assay based on the use of TKL immobilization support and microarray-based HIFI technology that takes approximately 4 hours and 30 minutes from whole-blood samples to results analysis. Targets amplified by multiplex PCR were hybridized on the chip, and a revelation step allowed the simultaneous identification of up to 24 blood group antigens, leading to the determination of extended genotypes. Two panels of multiplex PCR were developed: Panel 1 (KEL1/2, KEL3/4; JK1/2; FY1/2; MNS1/2, MNS3/4, FY*Fy et FY*X) and Panel 2 (YT1/2; CO1/2; DO1/2, HY+, Jo(a+); LU1/2; DI1/2). We present the results of the evaluation of our platform on a panel of 583 and 190 blood donor samples for Panel 1 and 2, respectively. Good correlations (99% to 100%) with reference were obtained.
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Affiliation(s)
- Stephanie A Boccoz
- Institute of Chemistry and Molecular and Supramolecular Biochemistry Team Enzyme Engineering, Biomimetic Membranes and Supramolecular Assemblies, CNRS 5246 ICBMS, Université Lyon 1, Villeurbanne, France
| | | | | | | | - Loïc J Blum
- Institute of Chemistry and Molecular and Supramolecular Biochemistry Team Enzyme Engineering, Biomimetic Membranes and Supramolecular Assemblies, CNRS 5246 ICBMS, Université Lyon 1, Villeurbanne, France
| | - Christophe A Marquette
- Institute of Chemistry and Molecular and Supramolecular Biochemistry Team Enzyme Engineering, Biomimetic Membranes and Supramolecular Assemblies, CNRS 5246 ICBMS, Université Lyon 1, Villeurbanne, France.
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Cain-Hom C, Pabalate R, Pham A, Patel HN, Wiler R, Cox JC. Mammalian Genotyping Using Acoustic Droplet Ejection for Enhanced Data Reproducibility, Superior Throughput, and Minimized Cross-Contamination. ACTA ACUST UNITED AC 2015; 21:37-48. [PMID: 26311060 DOI: 10.1177/2211068215601637] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Indexed: 12/20/2022]
Abstract
Genetically engineered animal models are major tools of a drug discovery pipeline because they facilitate understanding of the molecular and biochemical basis of disease. These highly complex models of human disease often require increasingly convoluted genetic analysis. With growing needs for throughput and consistency, we find that traditional aspiration-and-dispense liquid-handling robots no longer have the required speed, quality, or reproducibility.We present an adaptation and installation of an acoustic droplet ejection (ADE) liquid-handling system for ultra-high-throughput screening of genetically engineered models. An ADE system is fully integrated with existing laboratory processes and platforms to facilitate execution of PCR and quantitative PCR (qPCR) reactions. Such a configuration permits interrogation of highly complex genetic models in a variety of backgrounds. Our findings demonstrate that a single ADE system replaces 8-10 traditional liquid-handling robots while increasing quality and reproducibility.We demonstrate significant improvements achieved by transitioning to an ADE device: extremely low detectable cross-contamination in PCR and qPCR despite extensive use, greatly increased data reproducibility (large increases in data quality and Cq consistency), lowered reaction volumes for large cost savings, and nearly a magnitude increase in speed per instrument. We show several comparisons between traditional- and ADE-based pipetting for a qPCR-based workflow.
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Affiliation(s)
- Carol Cain-Hom
- Department of Transgenic Technology, Genentech Inc., San Francisco, CA, USA
| | - Ryan Pabalate
- Department of Transgenic Technology, Genentech Inc., San Francisco, CA, USA
| | - Anna Pham
- Department of Transgenic Technology, Genentech Inc., San Francisco, CA, USA
| | - Hetal N Patel
- Department of Transgenic Technology, Genentech Inc., San Francisco, CA, USA
| | - Rhonda Wiler
- Department of Transgenic Technology, Genentech Inc., San Francisco, CA, USA
| | - J Colin Cox
- Department of Transgenic Technology, Genentech Inc., San Francisco, CA, USA
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Flegel WA, Gottschall JL, Denomme GA. Implementing mass-scale red cell genotyping at a blood center. Transfusion 2015; 55:2610-5; quiz 2609. [PMID: 26094790 DOI: 10.1111/trf.13168] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 04/14/2015] [Accepted: 04/15/2015] [Indexed: 11/30/2022]
Abstract
BACKGROUND When problems with compatibility beyond ABO and D arise, currently transfusion services search their inventories and perform time-consuming serologic testing to locate antigen-negative blood. These clinically important blood group antigens can be detected reliably by red cell genotyping, which is a technology whereby DNA-based techniques are used to evaluate gene polymorphisms that determine the expression of blood group antigens. We introduced mass-scale genotyping and measured availability of genotyped blood. STUDY DESIGN AND METHODS All non-Caucasian donors qualified for genotyping along with donors who had a history of repeat donation. Mass-scale red cell genotyping, performed on an electronic interfaced open array platform, was implemented to screen blood donors for 32 single-nucleotide polymorphisms that predicted 42 blood group antigens. Genotype screening results were confirmed by phenotyping, when needed for antigen-negative transfusion, before release of the red blood cell (RBC) unit. RESULTS Approximately 22,000 donors were red cell genotyped within 4 months and a total of 43,066 donors in 4 years. There were 463 discordances (0.52% of 89,596 genotypes with a phenotype). Among the 307 resolved discordances, approximate equal numbers represented historical serologic or genotyping discrepancies (n = 151 and n = 156, respectively). In the final year of the study, a mean of 29% of the daily inventory had a genotype. CONCLUSIONS Red cell genotyping of blood donors using an electronic interface created a large and stable supply of RBC units with historical genotypes. The database served the needs of antigen-negative blood requests for a large regional blood center and allowed us to abandon screening by serology.
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Affiliation(s)
- Willy A Flegel
- Department of Transfusion Medicine, Clinical Center, National Institutes of Health, Bethesda, Maryland
| | - Jerome L Gottschall
- Department of Pathology, Medical College of Wisconsin.,Diagnostic Laboratories, BloodCenter of Wisconsin, Milwaukee, Wisconsin
| | - Gregory A Denomme
- Diagnostic Laboratories, BloodCenter of Wisconsin, Milwaukee, Wisconsin
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Affiliation(s)
- T. Peyrard
- Département Centre National de Référence pour les Groupes Sanguins; Institut National de la Transfusion Sanguine (INTS); Paris France
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Silvy M, Brès JC, Grimaldi A, Movia C, Muriel V, Roubinet F, Chiaroni J, Bailly P. A simple genotyping procedure without DNA extraction to identify rare blood donors. Vox Sang 2015; 109:173-80. [PMID: 25854538 DOI: 10.1111/vox.12261] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 01/14/2015] [Accepted: 01/19/2015] [Indexed: 11/28/2022]
Abstract
BACKGROUND Transfusion-induced alloimmunization has severe clinical consequences including haemolytic transfusion reactions, impaired transfused RBCs longevity and greater difficulty in finding compatible blood. Molecular analysis of genomic DNA now permits prediction of blood group phenotypes based on identification of single nucleotide polymorphisms. Implementation of molecular technologies in donor centres would be helpful in finding RBC units for special patient populations, but DNA extraction remains an obstacle to donor genotyping. MATERIALS AND METHODS We propose a simple method compatible with high throughput that allows blood group genotyping using a multiplex commercial kit without the need for DNA extraction. The principle relies on pre-PCR treatment of whole blood using heating/cooling procedure in association with a recombinant hotstart polymerase. RESULTS In a prospective analysis, we yielded 5628 alleles identification and designated 63 donors with rare blood, that is either negative for a high-frequency antigen or with a rare combination of common antigens. CONCLUSION The procedure was optimized for simplicity of use in genotyping platform and would allow not only to supply antigen-matched products to recipients but also to find rare phenotypes. This methodology could also be useful for establishing a donor repository for human platelet antigens (HPA)-matched platelets since the same issues are involved for patients with neonatal alloimmune thrombocytopenia or post-transfusion purpura.
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Affiliation(s)
- M Silvy
- Établissement Français du Sang, Blood Cell Grand Sud, Montpellier-Marseille, France.,UMR 7268 ADÉS Aix-Marseille Université-EFS-CNRS, Marseille, France
| | - J-C Brès
- Établissement Français du Sang, Blood Cell Grand Sud, Montpellier-Marseille, France
| | - A Grimaldi
- UMR 7268 ADÉS Aix-Marseille Université-EFS-CNRS, Marseille, France
| | - C Movia
- UMR 7268 ADÉS Aix-Marseille Université-EFS-CNRS, Marseille, France
| | - V Muriel
- UMR 7268 ADÉS Aix-Marseille Université-EFS-CNRS, Marseille, France
| | - F Roubinet
- Établissement Français du Sang, Blood Cell Grand Sud, Montpellier-Marseille, France
| | - J Chiaroni
- Établissement Français du Sang, Blood Cell Grand Sud, Montpellier-Marseille, France.,UMR 7268 ADÉS Aix-Marseille Université-EFS-CNRS, Marseille, France
| | - P Bailly
- Établissement Français du Sang, Blood Cell Grand Sud, Montpellier-Marseille, France.,UMR 7268 ADÉS Aix-Marseille Université-EFS-CNRS, Marseille, France
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Abstract
Thirty-five blood group systems, containing more than 300 antigens, are listed by the International Society of Blood Transfusion (ISBT). Most of these antigens result from a single-nucleotide polymorphism (SNP). Blood group typing is conventionally carried out by serology. However, this technique has certain limitations and cannot respond to the growing demand for blood products typed for a large number of antigens. Here we describe a blood group genotyping assay, from genomic DNA extraction from whole-blood samples to results. After DNA extraction, the on-chip test is based on the hybridization of targets beforehand amplified by multiplex polymerase chain reaction, followed by a revelation step allowing the simultaneous identification of up to 24 blood group antigens and leading to the determination of extended genotypes.
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Shortt K, Chaudhary S, Grigoryev D, Heruth DP, Venkitachalam L, Zhang LQ, Ye SQ. Identification of novel single nucleotide polymorphisms associated with acute respiratory distress syndrome by exome-seq. PLoS One 2014; 9:e111953. [PMID: 25372662 PMCID: PMC4221189 DOI: 10.1371/journal.pone.0111953] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Accepted: 09/29/2014] [Indexed: 12/26/2022] Open
Abstract
Acute respiratory distress syndrome (ARDS) is a lung condition characterized by impaired gas exchange with systemic release of inflammatory mediators, causing pulmonary inflammation, vascular leak and hypoxemia. Existing biomarkers have limited effectiveness as diagnostic and therapeutic targets. To identify disease-associating variants in ARDS patients, whole-exome sequencing was performed on 96 ARDS patients, detecting 1,382,399 SNPs. By comparing these exome data to those of the 1000 Genomes Project, we identified a number of single nucleotide polymorphisms (SNP) which are potentially associated with ARDS. 50,190SNPs were found in all case subgroups and controls, of which89 SNPs were associated with susceptibility. We validated three SNPs (rs78142040, rs9605146 and rs3848719) in additional ARDS patients to substantiate their associations with susceptibility, severity and outcome of ARDS. rs78142040 (C>T) occurs within a histone mark (intron 6) of the Arylsulfatase D gene. rs9605146 (G>A) causes a deleterious coding change (proline to leucine) in the XK, Kell blood group complex subunit-related family, member 3 gene. rs3848719 (G>A) is a synonymous SNP in the Zinc-Finger/Leucine-Zipper Co-Transducer NIF1 gene. rs78142040, rs9605146, and rs3848719 are associated significantly with susceptibility to ARDS. rs3848719 is associated with APACHE II score quartile. rs78142040 is associated with 60-day mortality in the overall ARDS patient population. Exome-seq is a powerful tool to identify potential new biomarkers for ARDS. We selectively validated three SNPs which have not been previously associated with ARDS and represent potential new genetic biomarkers for ARDS. Additional validation in larger patient populations and further exploration of underlying molecular mechanisms are warranted.
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Affiliation(s)
- Katherine Shortt
- Department of Pediatrics, Division of Experimental and Translational Genetics, Children's Mercy Hospital, University of Missouri - Kansas City School of Medicine, Kansas City, Missouri, United States of America
- Department of Biomedical and Health Informatics, University of Missouri - Kansas City School of Medicine, Kansas City, Missouri, United States of America
| | - Suman Chaudhary
- Department of Pediatrics, Division of Experimental and Translational Genetics, Children's Mercy Hospital, University of Missouri - Kansas City School of Medicine, Kansas City, Missouri, United States of America
| | - Dmitry Grigoryev
- Department of Pediatrics, Division of Experimental and Translational Genetics, Children's Mercy Hospital, University of Missouri - Kansas City School of Medicine, Kansas City, Missouri, United States of America
- Department of Biomedical and Health Informatics, University of Missouri - Kansas City School of Medicine, Kansas City, Missouri, United States of America
| | - Daniel P. Heruth
- Department of Pediatrics, Division of Experimental and Translational Genetics, Children's Mercy Hospital, University of Missouri - Kansas City School of Medicine, Kansas City, Missouri, United States of America
| | - Lakshmi Venkitachalam
- Department of Biomedical and Health Informatics, University of Missouri - Kansas City School of Medicine, Kansas City, Missouri, United States of America
| | - Li Q. Zhang
- Department of Pediatrics, Division of Experimental and Translational Genetics, Children's Mercy Hospital, University of Missouri - Kansas City School of Medicine, Kansas City, Missouri, United States of America
| | - Shui Q. Ye
- Department of Pediatrics, Division of Experimental and Translational Genetics, Children's Mercy Hospital, University of Missouri - Kansas City School of Medicine, Kansas City, Missouri, United States of America
- Department of Biomedical and Health Informatics, University of Missouri - Kansas City School of Medicine, Kansas City, Missouri, United States of America
- * E-mail:
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Fichou Y, Audrézet MP, Guéguen P, Le Maréchal C, Férec C. Next-generation sequencing is a credible strategy for blood group genotyping. Br J Haematol 2014; 167:554-62. [PMID: 25135605 DOI: 10.1111/bjh.13084] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Accepted: 07/04/2014] [Indexed: 01/06/2023]
Abstract
Although several medium/high-throughput tools have been engineered for molecular analysis of blood group genes, they usually rely on the targeting of single nucleotide polymorphisms, while other variants remain unidentified. To circumvent this limitation a strategy for genotyping blood group genes by next-generation sequencing (NGS) was set up. Libraries consisting of exons, flanking introns and untranslated regions of 18 genes involved in 15 blood systems were generated by the Ion AmpliSeq(™) Library Kit 2.0 and by fragmenting polymerase chain reaction products, normalized by two different approaches, mixed and sequenced by the Ion Torrent Personal Genome Machine (PGM(™) ) Sequencer. In our conditions, defined to limit both intra- and inter-sample variability, sequences from mixed libraries were read in a single run for a total coverage of 86·03% of the coding DNA sequences, including all loci defining the most clinically relevant antigens in all genes, except ABO. Importantly, the challenging attempt to generate gene-specific data for the homologous genes was successful. This work, which combines two complementary approaches to generate libraries, defines technical conditions for genotyping blood group genes, illustrates that NGS is suitable for such an application and suggests that, after automation, this novel tool could be used for molecular typing at the laboratory level.
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Affiliation(s)
- Yann Fichou
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1078, Brest, France; Etablissement Français du Sang (EFS) - Bretagne, Brest, France
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Boyle J, Thorpe SJ, Hawkins JR, Lockie C, Fox B, Matejtschuk P, Halls C, Metcalfe P, Rigsby P, Armstrong-Fisher S, Varzi AM, Urbaniak S, Daniels G. International reference reagents to standardise blood group genotyping: evaluation of candidate preparations in an international collaborative study. Vox Sang 2012; 104:144-52. [DOI: 10.1111/j.1423-0410.2012.01641.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Abstract
The present review reports on the lastest developments in multiplex immunoassays. The selected examples are classified through their detection strategy (fluorescence, chemiluminescence, colorimetry or labeless) and their assay format (standard microtiter plate, polymeric membranes and glass slides). Finally, the degree of integration in a complete system, incorporating fluid handling and detection was also taken into account.
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Impact of immobilization support on colorimetric microarrays performances. Biosens Bioelectron 2012; 35:94-100. [PMID: 22425224 DOI: 10.1016/j.bios.2012.02.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2011] [Revised: 02/01/2012] [Accepted: 02/15/2012] [Indexed: 11/20/2022]
Abstract
We report here a comparison of support materials for colorimetric hybridization assays on microarrays. Four surfaces with various chemistries and architectures (roughness and porosity) were evaluated: (i) bare and (ii) activated polystyrene surfaces classically used for ELISA; (iii) a double-sided adhesive support; and (iv) a porous nitrocellulose/cellulose acetate membrane. Each substrate was functionalized with a microarray of probes and subjected to an enzymatic colorimetric DNA hybridization test. Tests were carried out in a 96-well assembly suitable for automated high-throughput analysis. Colorimetry results, microscopy observations and a chemiluminescence study showed that the test efficiency not only depends on the surface probe density but that the capacity of the material to retain the colored enzymatic product is also a critical parameter. All parameters being considered, the adhesive coated surface proposes the best surface properties for efficient colorimetric microarrays.
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Corgier BP, Mandon CA, Le Goff GC, Blum LJ, Marquette CA. Adhesive microarrays for multipurpose diagnostic tools. LAB ON A CHIP 2011; 11:3006-3010. [PMID: 21773640 DOI: 10.1039/c1lc20246d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We are reporting here a new technology for the straightforward production of integrated microarrays. The approach is based on the use of adhesive supports enabling (i) the immobilization of biomolecules as microarrays (up to 2500 spots per cm(2)) and (ii) the easy assembly of these microarrays with complex 3D structures such as 96-well bottomless microplates or polymer and glass microfluidic networks. The analytical performances of the system were demonstrated for sandwich protein detection (C-reactive protein) and hybridization assays, both in classical 96-well microplate format and microfluidic environment.
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Affiliation(s)
- Benjamin P Corgier
- Laboratoire de Génie Enzymatique, Membranes Biomimétiques et Assemblages Supramoléculaires, Institut de Chimie et Biochimie Moléculaire et Supramoléculaire, Université Lyon1, CNRS 5246 ICBMS, Bat. CPE, 43 Bd du 11 Nov., 69622 Villeurbanne, France
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Le Goff GC, Blum LJ, Marquette CA. Enhanced Colorimetric Detection on Porous Microarrays Using in Situ Substrate Production. Anal Chem 2011; 83:3610-5. [DOI: 10.1021/ac200306d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Gaelle C. Le Goff
- Equipe Génie Enzymatique, Membranes Biomimétiques et Assemblages Supramoléculaires, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, Université Lyon 1, CNRS 5246 ICBMS, Bâtiment CPE-43, bd du 11 novembre 1918-69622 Villeurbanne, Cedex, France
| | - Loïc J. Blum
- Equipe Génie Enzymatique, Membranes Biomimétiques et Assemblages Supramoléculaires, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, Université Lyon 1, CNRS 5246 ICBMS, Bâtiment CPE-43, bd du 11 novembre 1918-69622 Villeurbanne, Cedex, France
| | - Christophe A. Marquette
- Equipe Génie Enzymatique, Membranes Biomimétiques et Assemblages Supramoléculaires, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, Université Lyon 1, CNRS 5246 ICBMS, Bâtiment CPE-43, bd du 11 novembre 1918-69622 Villeurbanne, Cedex, France
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Desmet C, Le Goff GC, Brès JC, Rigal D, Blum LJ, Marquette CA. Multiplexed immunoassay for the rapid detection of anti-tumor-associated antigens antibodies. Analyst 2011; 136:2918-24. [PMID: 21666912 DOI: 10.1039/c1an15121e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- C Desmet
- Equipe Génie Enzymatique, Membranes Biomimétiques et Assemblages Supramoléculaires, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, Université Lyon 1-CNRS 5246 ICBMS, Villeurbanne Cedex, France
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