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Detection of Copy Number Alterations Using Single Cell Sequencing
Published on: February 17, 2017
Analysis of gene copy number variations using a method based on lab-on-a-chip technology
Laura De Lellis1, Sandra Mammarella, Maria Cristina Curia
1Department of Drug Sciences, G. d’Annunzio University, Chieti, Italy.
Tumori
|April 13, 2012
Summary
A new lab-on-a-chip (LOC-CNV) method reliably detects copy number variations (CNVs) using multiplex PCR and capillary electrophoresis. This cost-effective approach offers a flexible alternative for genomic rearrangement analysis in research and clinical settings.
Area of Science:
- Genomics
- Molecular Biology
- Biotechnology
Background:
- Copy number variations (CNVs) are significant contributors to human genome variability and disease.
- Existing commercial assays for CNV detection are limited, necessitating development of adaptable and economical methods.
- Accurate detection of genomic rearrangements is crucial for both research and clinical diagnostics.
Purpose of the Study:
- To introduce a novel multiplex PCR-based method for copy number variation analysis.
- To evaluate the reliability and reproducibility of the new method.
- To compare the performance of the new method against established techniques.
Main Methods:
- Development of a lab-on-a-chip (LOC-CNV) system utilizing automated microfluidic capillary electrophoresis.
- Application of multiplex PCR for simultaneous amplification of target genomic regions.
- Validation through comparison with multiplex ligation-dependent probe amplification (MLPA) and nonfluorescent multiplex PCR coupled to HPLC (NFMP-HPLC).
Main Results:
- The LOC-CNV method demonstrated high concordance with previously validated assays (MLPA, NFMP-HPLC).
- Reproducibility was confirmed in control individuals and in carriers of pathogenic MLH1 or BRCA1 genomic rearrangements.
- The results validate LOC-CNV as a reliable tool for detecting genomic losses and gains.
Conclusions:
- LOC-CNV offers a practical and flexible option for assessing relative copy number changes.
- Advantages include reduced time, lower costs, and ease of adapting existing multiplex assays.
- The method is suitable for analyzing genomic targets of interest, including those from genome-wide studies.
Related Concept Videos
02:26Comparing Copy Number Variations and SNPs
Sequencing of the human genome has opened up several best-kept secrets of the genome. Scientists have identified thousands of genome variations that exist within a population. These variations can be a single nucleotide or a larger chromosomal variation.
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
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