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An Array-based Comparative Genomic Hybridization Platform for Efficient Detection of Copy Number Variations in Fast Neutron-induced Medicago truncatula Mutants
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Variación global del número de copias en el genoma humano
Richard Redon1, Shumpei Ishikawa, Karen R Fitch
1The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SA, UK.
Nature
|November 24, 2006
Resumen
Este estudio mapea la variación del número de copias del genoma humano (CNV) en diversas poblaciones. Los hallazgos revelan un contenido significativo de VNC, lo que afecta la diversidad genética y los estudios de enfermedades.
Área de la Ciencia:
- La genómica es la genómica.
- Genética Humana Genética Humana.
- Biología Molecular Biología Molecular
Sus antecedentes:
- La variación del número de copias (CNV) en las secuencias de ADN es funcionalmente importante, pero no se entiende completamente.
- Los CNV representan una fuente significativa de diversidad genética y cambio evolutivo.
Objetivo del estudio:
- Construir un mapa de primera generación de las regiones variables de número de copias (CNVR) en el genoma humano.
- Para analizar la extensión y distribución de las CNV en diversas poblaciones humanas.
Principales métodos:
- Cribado de ADN de 270 individuos (colección HapMap) utilizando matrices de genotipado SNP.
- Utilizando la hibridación genómica comparativa basada en clones para identificar las CNV.
Principales resultados:
- Identificación de 1.447 CNVRs que cubren 360 megabases (12% del genoma).
- Las CNVR contienen numerosos genes, loci de enfermedades, elementos funcionales y duplicaciones segmentarias.
- Las CNV abarcan un mayor contenido de nucleótidos que las SNP y muestran variaciones específicas de la población.
Conclusiones:
- El mapa CNV generado es un recurso valioso para comprender la diversidad genética humana y la evolución.
- Los datos destacan la importancia de la CNV en los estudios genéticos, incluida la investigación de enfermedades.
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