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Wang X, Liu Y, Liu H, Pan W, Ren J, Zheng X, Tan Y, Chen Z, Deng Y, He N, Chen H, Li S. Recent advances and application of whole genome amplification in molecular diagnosis and medicine. MedComm (Beijing) 2022; 3:e116. [PMID: 35281794 PMCID: PMC8906466 DOI: 10.1002/mco2.116] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 01/11/2022] [Accepted: 01/12/2022] [Indexed: 11/30/2022] Open
Abstract
Whole genome amplification (WGA) is a technology for non-selective amplification of the whole genome sequence, first appearing in 1992. Its primary purpose is to amplify and reflect the whole genome of trace tissues and single cells without sequence bias and to provide sufficient DNA template for subsequent multigene and multilocus analysis, along with comprehensive genome research. WGA provides a method to obtain a large amount of genetic information from a small amount of DNA and provides a valuable tool for preserving limited samples in molecular biology. WGA technology is especially suitable for forensic identification and genetic disease research, along with new technologies such as next-generation sequencing (NGS). In addition, WGA is also widely used in single-cell sequencing. Due to the small amount of DNA in a single cell, it is often unable to meet the amount of samples needed for sequencing, so WGA is generally used to achieve the amplification of trace samples. This paper reviews WGA methods based on different principles, summarizes both amplification principle and amplification quality, and discusses the application prospects and challenges of WGA technology in molecular diagnosis and medicine.
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Affiliation(s)
- Xiaoyu Wang
- Hunan Key Laboratory of Biomedical Nanomaterials and DevicesHunan University of TechnologyZhuzhouChina
| | - Yapeng Liu
- School of Early‐Childhood Education, Nanjing Xiaozhuang UniversityNanjingChina
| | - Hongna Liu
- Hunan Key Laboratory of Biomedical Nanomaterials and DevicesHunan University of TechnologyZhuzhouChina
| | - Wenjing Pan
- Hunan Key Laboratory of Biomedical Nanomaterials and DevicesHunan University of TechnologyZhuzhouChina
| | - Jie Ren
- Hunan Key Laboratory of Biomedical Nanomaterials and DevicesHunan University of TechnologyZhuzhouChina
| | - Xiangming Zheng
- Hunan Key Laboratory of Biomedical Nanomaterials and DevicesHunan University of TechnologyZhuzhouChina
| | - Yimin Tan
- Hunan Key Laboratory of Biomedical Nanomaterials and DevicesHunan University of TechnologyZhuzhouChina
| | - Zhu Chen
- Hunan Key Laboratory of Biomedical Nanomaterials and DevicesHunan University of TechnologyZhuzhouChina
| | - Yan Deng
- Hunan Key Laboratory of Biomedical Nanomaterials and DevicesHunan University of TechnologyZhuzhouChina
| | - Nongyue He
- Hunan Key Laboratory of Biomedical Nanomaterials and DevicesHunan University of TechnologyZhuzhouChina
- State Key Laboratory of BioelectronicsSoutheast UniversityNanjingChina
| | - Hui Chen
- Hunan Key Laboratory of Biomedical Nanomaterials and DevicesHunan University of TechnologyZhuzhouChina
| | - Song Li
- Hunan Key Laboratory of Biomedical Nanomaterials and DevicesHunan University of TechnologyZhuzhouChina
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Machida M, Kibayashi K. Effectiveness of whole genome amplification prior to short tandem repeat analysis for degraded DNA. Forensic Sci Int Genet 2020; 49:102373. [PMID: 32871489 DOI: 10.1016/j.fsigen.2020.102373] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 07/07/2020] [Accepted: 08/14/2020] [Indexed: 01/27/2023]
Abstract
Short tandem repeat (STR) analysis is prone to failure as DNA is frequently damaged by various environmental factors; hence, increasing the number of starting templates may constitute a feasible approach to improve STR profiling success. Whole genome amplification (WGA) is often applied to bolster starting template quantity. Moreover, WGA can reportedly be used on degraded DNA samples in forensics. Therefore, we utilized a PCR-based WGA method, termed "modified improved primer extension preamplification" (mIPEP), prior to STR analysis of degraded DNA, as this method is less affected by DNA quantity and quality than most others. Saliva from four volunteers was dried on glass fiber filter papers (paper) and glass slides (glass) and irradiated with UVA light (365 nm). The mIPEP method was initiated using 5, 0.5, and 0.05 ng of DNA following DNA extraction. The DNA degradation index (DI) was calculated based on the ratio of 129 to 41 bp DNA fragments; lower numbers indicate higher degradation. Following mIPEP, STR analysis was performed using the AmpFlSTR Identifiler PCR amplification kit. The number of detectable STR loci, with and without mIPEP, decreased according to reduced DI in a different manner for the various DNA concentrations extracted from paper and glass. Specifically, for the 5 ng DNA sample on paper, at a DI < 0.2, the number of detectable STR loci was greater with mIPEP than without it, owing to fewer locus drop-outs. Similarly, the 0.05 ng DNA sample deposited on paper, at DI ≥ 0.7, exhibited higher numbers of detectable STR loci when prepared using mIPEP owing to fewer allele drop-outs. Moreover, among samples deposited on glass, the 0.05 ng DNA sample at DI ≥ 0.4 afforded a larger number of detectable STR loci when prepared using mIPEP than those without mIPEP, owing to fewer locus drop-outs. These findings suggest that performing mIPEP in accordance with sample DNA condition (e.g., quantity and quality) may lead to increased success of STR analysis. Notably, the conditions identified as most responsive to mIPEP were consistent across both UVA-irradiated and environmentally-damaged sample states. Taken together, our results suggest that applying mIPEP would be beneficial to obtain improved STR profiles under conditions involving severely degraded samples with large quantities of DNA, or with small quantities of DNA albeit with slight degradation.
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Affiliation(s)
- Mitsuyo Machida
- Department of Legal Medicine, School of Medicine, Tokyo Women's Medical University, Tokyo 162-8666, Japan.
| | - Kazuhiko Kibayashi
- Department of Legal Medicine, School of Medicine, Tokyo Women's Medical University, Tokyo 162-8666, Japan
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Shafei N, Hakhamaneshi MS, Houshmand M, Gerayeshnejad S, Fathi F, Sharifzadeh S. Diagnostic Value of Non-Invasive Prenatal Screening of β-thalassemia by Cell Free Fetal DNA and Fetal NRBC. Curr Mol Med 2020; 19:105-111. [PMID: 30813874 DOI: 10.2174/1566524019666190226124135] [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: 07/22/2018] [Revised: 01/08/2019] [Accepted: 02/18/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Beta thalassemia is a common disorder with autosomal recessive inheritance. The most prenatal diagnostic methods are the invasive techniques that have the risk of miscarriage. Now the non-invasive methods will be gradually alternative for these invasive techniques. OBJECTIVE The aim of this study is to evaluate and compare the diagnostic value of two non-invasive diagnostic methods for fetal thalassemia using cell free fetal DNA (cff-DNA) and nucleated RBC (NRBC) in one sampling community. METHODS 10 ml of blood was taken in two k3EDTA tube from 32 pregnant women (mean of gestational age = 11 weeks), who themselves and their husbands had minor thalassemia. One tube was used to enrich NRBC and other was used for cff-DNA extraction. NRBCs were isolated by MACS method and immunohistochemistry; the genome of stained cells was amplified by multiple displacement amplification (MDA) procedure. These products were used as template in b-globin segments PCR. cff-DNA was extracted by THP method and 300 bp areas were recovered from the agarose gel as fetus DNA. These DNA were used as template in touch down PCR to amplify b-globin gen. The amplified b-globin segments were sequenced and the results compared with CVS resul. RESULTS The data showed that sensitivity and specificity of thalassemia diagnosis by NRBC were 100% and 92% respectively and sensitivity and specificity of thalassemia diagnosis by cff-DNA were 100% and 84% respectively. CONCLUSION These methods with high sensitivity can be used as screening test but due to their lower specificity than CVS, they cannot be used as diagnostic test.
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Affiliation(s)
- Nadia Shafei
- Student Research Committee, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | | | - Massoud Houshmand
- Department of Medical Genetics, National Institute for Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran
| | - Siavash Gerayeshnejad
- Department of Biochemistry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Fardin Fathi
- Cellular and Molecular Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Sardar Sharifzadeh
- PhD student, Department of Clinical Biochemistry, School of Medicine, Tarbiat Modares University, Tehran, Iran
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Freedman BG, Zu TNK, Wallace RS, Senger RS. Raman spectroscopy detects phenotypic differences among
Escherichia coli
enriched for 1‐butanol tolerance using a metagenomic DNA library. Biotechnol J 2016; 11:877-89. [DOI: 10.1002/biot.201500144] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2015] [Revised: 10/22/2015] [Accepted: 01/26/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Benjamin G. Freedman
- Department of Biological Systems Engineering; Virginia Tech Blacksburg Virginia USA
| | - Theresah N. K. Zu
- Department of Biological Systems Engineering; Virginia Tech Blacksburg Virginia USA
| | - Robert S. Wallace
- Department of Biological Systems Engineering; Virginia Tech Blacksburg Virginia USA
| | - Ryan S. Senger
- Department of Biological Systems Engineering; Virginia Tech Blacksburg Virginia USA
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5
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Recent advances and current issues in single-cell sequencing of tumors. Cancer Lett 2015; 365:1-10. [PMID: 26003306 DOI: 10.1016/j.canlet.2015.04.022] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2015] [Revised: 04/19/2015] [Accepted: 04/20/2015] [Indexed: 12/28/2022]
Abstract
Intratumoral heterogeneity is a recently recognized but important feature of cancer that underlies the various biocharacteristics of cancer tissues. The advent of next-generation sequencing technologies has facilitated large scale capture of genomic data, while the recent development of single-cell sequencing has allowed for more in-depth studies into the complex molecular mechanisms of intratumoral heterogeneity. In this review, the recent advances and current challenges in single-cell sequencing methodologies are discussed, highlighting the potential power of these data to provide insights into oncological processes, from tumorigenesis through progression to metastasis and therapy resistance.
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Emad A, Lamoureux J, Ouellet A, Drouin R. Rapid Aneuploidy Detection of Chromosomes 13, 18, 21, X and Y Using Quantitative Fluorescent Polymerase Chain Reaction with Few Microdissected Fetal Cells. Fetal Diagn Ther 2015; 38:65-76. [DOI: 10.1159/000365810] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Accepted: 07/07/2014] [Indexed: 11/19/2022]
Abstract
Objectives: Analysis of DNA from small numbers of cells, such as fetal cells in maternal blood, is a major limiting factor for their use in clinical applications. Traditional methods of single-cells whole genome amplification (SCs-WGA) and accurate analysis have been challenging to date. Our purpose was to assess the feasibility of using a few fetal cells to determine fetal sex and major chromosomal abnormalities by quantitative fluorescent polymerase chain reaction (QF-PCR). Methods: Cultured cells from 26 amniotic fluid samples were used for standard DNA extraction and recovery of 5 fetal cells by laser-capture microdissection. SCs-WGA was performed using the DNA from the microdissected cells. PCR amplification of short tandem repeats specific for chromosomes 13, 18, 21, X and Y was performed on extracted and amplified DNA. Allele dosage and sexing were quantitatively analyzed following separation by capillary electrophoresis. Results: Microsatellite QF-PCR analysis showed high concordance in chromosomal copy number between extracted and amplified DNA when 5 or more cells were used. Results were in concordance with that of conventional cytogenetic analysis. Conclusion: Satisfactory genomic coverage can be obtained from SCs-WGA. Clinically, SCs-WGA coupled with QF-PCR can provide a reliable, accurate, rapid and cost-effective method for detection of major fetal chromosome abnormalities.
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Abstract
Whole genome amplification (WGA) is a widely used molecular technique that is becoming increasingly necessary in genetic research on a range of sample types including individual cells, fossilized remains and entire ecosystems. Multiple methods of WGA have been developed, each with specific strengths and weaknesses, but with a common defect in that each method distorts the initial template DNA during the course of amplification. The type, extent, and circumstance of the bias vary with the WGA method and particulars of the template DNA. In this review, we endeavor to discuss the types of bias introduced, the susceptibility of common WGA techniques to these bias types, and the interdependence between bias and characteristics of the template DNA. Finally, we attempt to illustrate some of the criteria specific to the analytical platform and research application that should be considered to enable combination of the appropriate WGA method, template DNA, sequencing platform, and intended use for optimal results.
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Affiliation(s)
| | - John H Leamon
- CyVek Inc., 2 Barnes Industrial Road South, Wallingford, CT, 06492, USA.
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Shojaei Saadi HA, Vigneault C, Sargolzaei M, Gagné D, Fournier É, de Montera B, Chesnais J, Blondin P, Robert C. Impact of whole-genome amplification on the reliability of pre-transfer cattle embryo breeding value estimates. BMC Genomics 2014; 15:889. [PMID: 25305778 PMCID: PMC4201692 DOI: 10.1186/1471-2164-15-889] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Accepted: 10/03/2014] [Indexed: 01/21/2023] Open
Abstract
Background Genome-wide profiling of single-nucleotide polymorphisms is receiving increasing attention as a method of pre-implantation genetic diagnosis in humans and of commercial genotyping of pre-transfer embryos in cattle. However, the very small quantity of genomic DNA in biopsy material from early embryos poses daunting technical challenges. A reliable whole-genome amplification (WGA) procedure would greatly facilitate the procedure. Results Several PCR-based and non-PCR based WGA technologies, namely multiple displacement amplification, quasi-random primed library synthesis followed by PCR, ligation-mediated PCR, and single-primer isothermal amplification were tested in combination with different DNA extractions protocols for various quantities of genomic DNA inputs. The efficiency of each method was evaluated by comparing the genotypes obtained from 15 cultured cells (representative of an embryonic biopsy) to unamplified reference gDNA. The gDNA input, gDNA extraction method and amplification technology were all found to be critical for successful genome-wide genotyping. The selected WGA platform was then tested on embryo biopsies (n = 226), comparing their results to that of biopsies collected after birth. Although WGA inevitably leads to a random loss of information and to the introduction of erroneous genotypes, following genomic imputation the resulting genetic index of both sources of DNA were highly correlated (r = 0.99, P<0.001). Conclusion It is possible to generate high-quality DNA in sufficient quantities for successful genome-wide genotyping starting from an early embryo biopsy. However, imputation from parental and population genotypes is a requirement for completing and correcting genotypic data. Judicious selection of the WGA platform, careful handling of the samples and genomic imputation together, make it possible to perform extremely reliable genomic evaluations for pre-transfer embryos. Electronic supplementary material The online version of this article (doi:10.1186/1471-2164-15-889) contains supplementary material, which is available to authorized users.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Claude Robert
- Laboratory of Functional Genomics of Early Embryonic Development, Institut des nutraceutiques et des aliments fonctionnels, Faculté des sciences de l'agriculture et de l'alimentation, Pavillon des services, Université Laval, Québec G1V 0A6, Canada.
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Shapiro E, Biezuner T, Linnarsson S. Single-cell sequencing-based technologies will revolutionize whole-organism science. Nat Rev Genet 2013; 14:618-30. [PMID: 23897237 DOI: 10.1038/nrg3542] [Citation(s) in RCA: 763] [Impact Index Per Article: 69.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The unabated progress in next-generation sequencing technologies is fostering a wave of new genomics, epigenomics, transcriptomics and proteomics technologies. These sequencing-based technologies are increasingly being targeted to individual cells, which will allow many new and longstanding questions to be addressed. For example, single-cell genomics will help to uncover cell lineage relationships; single-cell transcriptomics will supplant the coarse notion of marker-based cell types; and single-cell epigenomics and proteomics will allow the functional states of individual cells to be analysed. These technologies will become integrated within a decade or so, enabling high-throughput, multi-dimensional analyses of individual cells that will produce detailed knowledge of the cell lineage trees of higher organisms, including humans. Such studies will have important implications for both basic biological research and medicine.
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Affiliation(s)
- Ehud Shapiro
- 1] Department of Computer Science and Applied Math, Weizmann Institute of Science, Rehovot 76100, Israel. [2] Department of Biological Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
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McGraw S, Shojaei Saadi HA, Robert C. Meeting the methodological challenges in molecular mapping of the embryonic epigenome. Mol Hum Reprod 2013; 19:809-27. [PMID: 23783346 DOI: 10.1093/molehr/gat046] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The past decade of life sciences research has been driven by progress in genomics. Many voices are already proclaiming the post-genomics era, in which phenomena other than sequence polymorphism influence gene expression and also explain complex phenotypes. One of these burgeoning fields is the study of the epigenome. Although the mechanisms by which chromatin structure and reorganization as well as cytosine methylation influence gene expression are not fully understood, they are being invoked to explain the now-accepted long-term impact of the environment on gene expression, which appears to be a factor in the development of numerous diseases. Such studies are particularly relevant in early embryonic development, during which waves of epigenetic reprogramming are known to have profound impacts. Since gametes and zygotes are in the process of resetting the genome in order to create embryonic stem cells that will each differentiate to create one of many specific tissue types, this phase of life is now viewed as a window of susceptibility to epigenetic reprogramming errors. Epigenetics could explain the influence of factors such as the nutritional/metabolic status of the mother or the artificial environment of assisted reproductive technologies. However, the peculiar nature of early embryos in addition to their scarcity poses numerous technological challenges that are slowly being overcome. The principal subject of this article is to review the suitability of various current and emerging technological platforms to study oocytes and early embryonic epigenome with more emphasis on studying DNA methylation. Furthermore, the constraint of samples size, inherent to the study of preimplantation embryo development, was put in perspective with the various molecular platforms described.
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Affiliation(s)
- Serge McGraw
- Department of Human Genetics, Montreal Children's Hospital Research Institute, McGill University, Montréal, QC H3Z 2Z3, Canada
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11
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Molecular strategies for pre-implantation genetic diagnosis of single gene and chromosomal disorders. Best Pract Res Clin Obstet Gynaecol 2012; 26:551-9. [DOI: 10.1016/j.bpobgyn.2012.06.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Accepted: 06/11/2012] [Indexed: 11/20/2022]
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12
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Fritzsch FS, Dusny C, Frick O, Schmid A. Single-Cell Analysis in Biotechnology, Systems Biology, and Biocatalysis. Annu Rev Chem Biomol Eng 2012; 3:129-55. [DOI: 10.1146/annurev-chembioeng-062011-081056] [Citation(s) in RCA: 155] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Frederik S.O. Fritzsch
- Single Cell Laboratory, Leibniz-Institut für Analytische Wissenschaften—ISAS—e.V., D-44227 Dortmund, Germany;
| | - Christian Dusny
- Single Cell Laboratory, Leibniz-Institut für Analytische Wissenschaften—ISAS—e.V., D-44227 Dortmund, Germany;
| | - Oliver Frick
- Laboratory of Chemical Biotechnology, Technische Universität Dortmund, D-44227 Dortmund, Germany
| | - Andreas Schmid
- Single Cell Laboratory, Leibniz-Institut für Analytische Wissenschaften—ISAS—e.V., D-44227 Dortmund, Germany;
- Laboratory of Chemical Biotechnology, Technische Universität Dortmund, D-44227 Dortmund, Germany
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Choolani M, Mahyuddin AP, Hahn S. The promise of fetal cells in maternal blood. Best Pract Res Clin Obstet Gynaecol 2012; 26:655-67. [PMID: 22795236 DOI: 10.1016/j.bpobgyn.2012.06.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Revised: 05/23/2012] [Accepted: 06/10/2012] [Indexed: 01/23/2023]
Abstract
Delaying childbirth increases the proportion of advanced maternal age pregnancies. This increases the number of pregnancies requiring invasive prenatal testing. Prenatal diagnosis of chromosomal aneuploidies and monogenic disorders requires fetal cells obtained through invasive procedures (i.e. chorionic villus sampling and amniocentesis). These procedures carry a risk of fetal loss, which causes anxiety to at-risk couples. Intact fetal cells entering maternal circulation have raised the possibility of non-invasive prenatal diagnosis. Rarity of fetal cells, however, has made it challenging. Fetal nucleated red blood cells are ideal candidate target cells because they have limited lifespan, contain true representation of fetal genotype, contain specific fetal cell identifiers (embryonic and fetal globins), and allow interrogation with chromosomal fluorescence in-situ hybridisation and possibly with array comparative genomic hybridisation. The utility of fetal nucleated red blood cells in non-invasive prenatal diagnosis has not reached clinical application because of the inconsistencies in enrichment strategies and rarity of cells.
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Affiliation(s)
- Mahesh Choolani
- Department of Obstetrics & Gynaecology, National University of Singapore, Singapore.
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Moghaddaszadeh-Ahrabi S, Farajnia S, Rahimi-Mianji G, Nejati-Javaremi A. A short and simple improved-primer extension preamplification (I-PEP) procedure for whole genome amplification (WGA) of bovine cells. Anim Biotechnol 2012; 23:24-42. [PMID: 22292699 DOI: 10.1080/10495398.2011.630907] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
Embryo transfer is a reproductive technique that has a major impact on the dissemination of economically important genes and the rate of genetic gain in breeding schemes. In recent years, there has been increasing interest in the use of sexed and genotyped embryos in commercial embryo transfer programs. Marker/gene assisted selection (MAS/GAS) projects can be performed in the pre-implantation stage through mass production of characterized embryos. Biopsy of a few cells in the morulla stage is essential for pre-implantation genetic diagnosis (PGD), in which sex determination, evaluation of disease genes, and genotyping for candidate genes are performed. Limited quantity of cells and low amount of DNA restrict the use of multiple molecular analyses in PGD programs. Recently, whole genome amplification (WGA) techniques promise to overcome this problem by providing sufficient input DNA for analysis. Among several techniques proposed for WGA, the primer extension pre-amplification (PEP) and the improved-primer extension pre-amplification (I-PEP) methods are the most commonly used. However, these methods are time-consuming and need more than 12 h amplification cycles. Since the time is a critical parameter in the successful characterized embryo transfer, the shortening of diagnosis time is highly desirable. In this study, we developed a short and simple I-PEP procedure (~3 h) and evaluated its performance for the amplification of bovine genomic DNA. We assessed short WGA procedure by polymerase chain reaction (PCR) amplification of 7 specific loci. The results indicated that the short procedure possesses enough sensitivity for the molecular genetic analysis of 1 input cell. Although the efficiency of the method was 100%, there was an inconsistency between genomic DNA (gDNA) and whole genome amplification product (wgaDNA) genotypes for kappa-casein locus; that is, however, most likely due to allele drop-out (ADO) or false homozigocity. The results of this study indicate that with the application of reliable methods, WGA-amplified bovine DNA will be a useful source for sexing and genotyping bovine embryos in several quantitative trait locus (QTL) markers.
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Affiliation(s)
- S Moghaddaszadeh-Ahrabi
- Department of Animal Science, Science and Research Branch, Islamic Azad University (IAU), Tehran, Iran.
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15
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Liss J, Mirecka A, Kitowska K, Łukaszuk K. Diagnostyka preimplantacyjna w kierunku niedosłuchu wrodzonego z mutacją 35delG w genie GJB2 – doniesienie wstępne. Otolaryngol Pol 2011; 65:443-6. [DOI: 10.1016/s0030-6657(11)70738-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2011] [Accepted: 08/24/2011] [Indexed: 11/28/2022]
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Morozkin ES, Loseva EM, Karamysheva TV, Babenko VN, Laktionov PP, Vlassov VV, Rubtsov NB. A method for generating selective DNA probes for the analysis of C-negative regions in human chromosomes. Cytogenet Genome Res 2011; 135:1-11. [PMID: 21811056 DOI: 10.1159/000330124] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/18/2011] [Indexed: 12/14/2022] Open
Abstract
Linker-adapter polymerase chain reaction (LA-PCR) is among the most efficient techniques for whole genome DNA amplification. The key stage in LA-PCR is the hydrolysis of a DNA sample with restriction endonucleases, and the choice of a restriction endonuclease (or several endonucleases) determines the composition of DNA probes generated in LA-PCR. Computer analysis of the localization of the restriction sites in human genome has allowed us to propose an efficient technique for generating DNA probes by LA-PCR using the restriction endonucleases HaeIII and RsaI. In silico hydrolysis of human genomic DNA with endonucleases HaeIII and RsaI demonstrate that 100- to 1,000-bp DNA fragments are more abundant in the gene-rich regions. Applying in situ hybridization to metaphase chromosomes, we demonstrated that the produced DNA probes predominantly hybridized to the C-negative chromosomal regions, whereas the FISH signal was almost absent in the C-positive regions. The described protocol for generating DNA probes may be successfully used in subsequent cytogenetic analysis of the C-negative chromosomal regions.
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Affiliation(s)
- E S Morozkin
- Institute of Chemical Biology and Fundamental Medicine, Siberian Division, Russian Academy of Sciences, Novosibirsk. morozkin @ niboch.nsc.ru
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17
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Zheng YM, Wang N, Li L, Jin F. Whole genome amplification in preimplantation genetic diagnosis. J Zhejiang Univ Sci B 2011; 12:1-11. [PMID: 21194180 DOI: 10.1631/jzus.b1000196] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Preimplantation genetic diagnosis (PGD) refers to a procedure for genetically analyzing embryos prior to implantation, improving the chance of conception for patients at high risk of transmitting specific inherited disorders. This method has been widely used for a large number of genetic disorders since the first successful application in the early 1990s. Polymerase chain reaction (PCR) and fluorescent in situ hybridization (FISH) are the two main methods in PGD, but there are some inevitable shortcomings limiting the scope of genetic diagnosis. Fortunately, different whole genome amplification (WGA) techniques have been developed to overcome these problems. Sufficient DNA can be amplified and multiple tasks which need abundant DNA can be performed. Moreover, WGA products can be analyzed as a template for multi-loci and multi-gene during the subsequent DNA analysis. In this review, we will focus on the currently available WGA techniques and their applications, as well as the new technical trends from WGA products.
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Affiliation(s)
- Ying-ming Zheng
- Department of Reproductive Endocrinology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
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Chen CP, Huang MC, Su YN, Tsai FJ, Wu PC, Lee CC, Town DD, Pan CW, Wang W. Recurrent distal 16q duplication and terminal 22q deletion: prenatal diagnosis and genetic counseling. Taiwan J Obstet Gynecol 2011; 49:544-7. [PMID: 21199767 DOI: 10.1016/s1028-4559(10)60117-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/28/2010] [Indexed: 11/17/2022] Open
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Guignot F, Perreau C, Cavarroc C, Touzé JL, Pougnard JL, Dupont F, Beckers JF, Rémy B, Babilliot JM, Bed’Hom B, Lamorinière JM, Mermillod P, Baril G. Sex and PRNP Genotype Determination in Preimplantation Caprine Embryos. Reprod Domest Anim 2010; 46:656-63. [DOI: 10.1111/j.1439-0531.2010.01724.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Single cell analytics: an overview. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2010; 124:99-122. [PMID: 21072695 DOI: 10.1007/10_2010_96] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The research field of single cell analysis is rapidly expanding, driven by developments in flow cytometry, microscopy, lab-on-a-chip devices, and many other fields. The promises of these developments include deciphering cellular mechanisms and the quantification of cell-to-cell differences, ideally with spatio-temporal resolution. However, these promises are challenging as the analytical techniques have to cope with minute analyte amounts and concentrations. We formulate first these challenges and then present state-of-the-art analytical techniques available to investigate the different cellular hierarchies--from the genome to the phenome, i.e., the sum of all phenotypes.
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dcDegenerate oligonucleotide primed-PCR for multilocus, genome-wide analysis from limited quantities of DNA. ACTA ACUST UNITED AC 2009; 18:165-75. [PMID: 19704262 DOI: 10.1097/pdm.0b013e31818d34d1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
This study modified the degenerate oligonucleotide primed-polymerase chain reaction (DOP-PCR)-based whole genome amplification method for improvement of downstream genome-wide analysis of low copy number DNA samples (<or= 0.100 ng). Experiments involved altering the degeneracy of the DOP primer, nonspecific cycle number, and adding proofreading polymerases. Increasing the degeneracy of the primer and the number of cycles that use a low annealing temperature should improve the nonspecific amplification of the DOP-PCR reaction. The addition of proofreading enzymes should allow for longer amplification products, increasing the genome coverage of the reaction. Low-input DNA quantities were examined for the primer and the cycle number studies using standard DOP-PCR parameters. The optimized DOP-PCR technique was then implemented for the polymerase study. All DOP-PCR products were amplified by using a multiplex microsatellite amplification kit to evaluate products from multiple chromosomes, followed by separation and detection by capillary electrophoresis. The 10 N primer, 12 nonspecific cycles, and the addition of the DeepVent proofreading enzyme all significantly increased the number of short tandem repeat alleles successfully amplified. All modifications also lowered the rate of allele drop-in, or sporadic additional allele occurrence, when compared with DOP-PCR results published earlier. Further, an average of > 0.50 intralocus heterozygote peak ratios were observed for most DNA input quantities examined. These results show that modifications of the traditional DOP-PCR reaction (dcDOP-PCR) to include the use of a more degenerate primer (10 N), 12 nonspecific cycles, and a proofreading enzyme allows for a more complete, balanced chromosome amplification from limited and/or compromised clinical and biological samples.
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Guay-Woodford LM, Knoers NV. Genetic Testing: Considerations for Pediatric Nephrologists. Semin Nephrol 2009; 29:338-48. [DOI: 10.1016/j.semnephrol.2009.03.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Balazs M. Single-cell comparative genomic hybridization analysis of micronucleated cells. Cytometry A 2009; 75:557-9. [PMID: 19544322 DOI: 10.1002/cyto.a.20751] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Plasmodium falciparum and dihydrofolate reductase I164L mutations in Africa. Antimicrob Agents Chemother 2009; 53:1722; author reply 1722-3. [PMID: 19299520 DOI: 10.1128/aac.01427-08] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Guignot F, Baril G, Dupont F, Cognie Y, Folch J, Alabart JL, Poulin N, Beckers JF, Bed'hom B, Babilliot JM, Mermillod P. Determination of sex and scrapie resistance genotype in preimplantation ovine embryos. Mol Reprod Dev 2009; 76:183-90. [PMID: 18543282 DOI: 10.1002/mrd.20940] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The aim of this study was to test the accuracy of genotype diagnosis after pre-amplification of DNA extracted from biopsies obtained by microblade cutting of ovine embryos and to evaluate the viability of biopsied embryos after vitrification/warming and transfer to recipients. Sex and PrP genotypes were determined. Sex diagnosis was done by PCR amplification of ZFX/ZFY and SRY sequences after PEP-PCR while PrP genotype determination was performed after specific pre-amplification of specific target including codons 136, 154 and 171. Embryos were collected at Day 7 after oestrus. Blastocysts and expanded blastocysts were biopsied immediately after collection whereas compacted morulae were biopsied after 24 hr of in vitro culture. Eighty-nine biopsied embryos were frozen by vitrification. Fresh and vitrified whole embryos were kept as control. DNA of biopsies was extracted and pre-amplified. Sex diagnosis was efficient for 96.6% of biopsies and PrP genotyping was determined in 95.8% of codons. After embryo transfer, no significant difference was observed in lambing rate between biopsied, vitrified control and fresh embryos (54.5%, 60% and 66.6%, respectively). Embryo survival rate was not different between biopsied and whole vitrified embryos (P = 0.38). At birth, 96.7% of diagnosed sex and 95.4% of predetermined codons were correct. Lamb PrP profiles were in agreement with parental genotype. PEP-PCR coupled with sex diagnosis and nested PCR coupled with PrP genotype predetermination are very accurate techniques to genotype ovine embryo before transfer. These original results allow planning of selection of resistant genotype to scrapie and sex of offspring before transfer of cryopreserved embryo.
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Affiliation(s)
- Florence Guignot
- UMR INRA-CNRS-Université de Tours-Haras Nationaux, Physiologie de la Reproduction et des Comportements, Nouzilly, France.
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Whole genome amplification of the rust Puccinia striiformis f. sp. tritici from single spores. J Microbiol Methods 2009; 77:229-34. [PMID: 19233233 DOI: 10.1016/j.mimet.2009.02.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2009] [Accepted: 02/11/2009] [Indexed: 11/24/2022]
Abstract
Rust fungi are obligate parasites and cannot be routinely cultured to obtain sufficient biomass for DNA extractions. Multiple displacement amplification (MDA) was demonstrated in this study for whole genome amplification from single spores of the rust fungus, Puccinia striiformis. The genomic DNA coverage and fidelity of this method was evaluated by PCR amplification and sequencing of two genetic markers: portions of the multi-copy nuclear ribosomal DNA internal transcribed spacer region (ITS) and the single copy beta-tubulin gene from two geographical diverse isolates. Our results show that MDA is a valuable tool for whole genome amplification from single spores, and we propose that MDA-amplified DNA can be used for molecular genetic analysis of the wheat yellow rust fungus.
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Nasri NWM, Jamal ARA, Abdullah NC, Razi ZRM, Mokhtar NM. Preimplantation genetic diagnosis for beta-thalassemia using single-cell DNA analysis for codons 17 and 26 of beta-globin gene. Arch Med Res 2009; 40:1-9. [PMID: 19064120 DOI: 10.1016/j.arcmed.2008.10.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2008] [Accepted: 10/06/2008] [Indexed: 11/17/2022]
Abstract
BACKGROUND Preimplantation genetic diagnosis (PGD) of monogenic autosomal hereditary disorders following assisted conception usually involves the removal of one or two blastomeres from preimplantation embryos. However, the amount of DNA from a single blastomere is insufficient to amplify the region of interest. Hence, the whole genome amplification (WGA) method is performed prior to amplifying the genes of interest before analysis of DNA material through polymerase chain reaction (PCR). METHODS In the present study we report that WGA from a single blastomere extracted from unwanted preimplantation human embryos (obtained from 10 infertile couples) could positively yield microgram quantities of amplified DNA allowing PCR analysis for codons 17 and 26 of the beta-globin gene that cause the beta-thalassemia disorder. We developed a rapid and highly specific technique of single-cell PCR to amplify a specific region on the beta-globin gene for codon 17 (AAG-->TAG) and codon 26 (GAG-->AAG) by using single-cell PCR. RESULTS About 249 bp of amplicon for codon 17 and about 200 bp of amplicon for codon 26 were successfully amplified. No mutations were observed. Analyzed embryos were not transferred back to patients because the embryos used as samples were wasted embryos. CONCLUSIONS Compared to other approaches for prenatal diagnosis, PGD is rapid and suitable as a noninvasive clinical tool for identifying genetic disorders for the purpose of reducing selective miscarriages and moral dilemmas. We opine that DNA extraction and amplification can be successfully performed by using single-cell PCR to diagnose genetic diseases before pregnancy.
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Affiliation(s)
- Noor Wahidah Mohd Nasri
- Department of Physiology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
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Frumkin D, Wasserstrom A, Itzkovitz S, Harmelin A, Rechavi G, Shapiro E. Amplification of multiple genomic loci from single cells isolated by laser micro-dissection of tissues. BMC Biotechnol 2008; 8:17. [PMID: 18284708 PMCID: PMC2266725 DOI: 10.1186/1472-6750-8-17] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2007] [Accepted: 02/20/2008] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND Whole genome amplification (WGA) and laser assisted micro-dissection represent two recently developed technologies that can greatly advance biological and medical research. WGA allows the analysis of multiple genomic loci from a single genome and has been performed on single cells from cell suspensions and from enzymatically-digested tissues. Laser micro-dissection makes it possible to isolate specific single cells from heterogeneous tissues. RESULTS Here we applied for the first time WGA on laser micro-dissected single cells from stained tissue sections, and developed a protocol for sequentially performing the two procedures. The combined procedure allows correlating the cell's genome with its natural morphology and precise anatomical position. From each cell we amplified 122 genomic and mitochondrial loci. In cells obtained from fresh tissue sections, 64.5% of alleles successfully amplified to approximately 700000 copies each, and mitochondrial DNA was amplified successfully in all cells. Multiplex PCR amplification and analysis of cells from pre-stored sections yielded significantly poorer results. Sequencing and capillary electrophoresis of WGA products allowed detection of slippage mutations in microsatellites (MS), and point mutations in P53. CONCLUSION Comprehensive genomic analysis of single cells from stained tissue sections opens new research opportunities for cell lineage and depth analyses, genome-wide mutation surveys, and other single cell assays.
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Affiliation(s)
- Dan Frumkin
- Department of Biological Chemistry, Weizmann Institute of Science, Rehovot, Israel.
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