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Array Comparative Genomic Hybridization (Array CGH) for Detection of Genomic Copy Number Variants
Published on: February 21, 2015
Un mapa del SNP del cromosoma 22 humano
J C Mullikin1, S E Hunt, C G Cole
1The Sanger Centre, Hinxton, Cambridge, UK.
Nature
|October 12, 2000
Resumen
Los investigadores mapearon más de 65.000 polimorfismos de nucleótido único (SNP) en todo el genoma humano. Este mapa SNP integral ayuda a comprender la individualidad genética y la susceptibilidad a las enfermedades.
Área de la Ciencia:
- La genómica es la genómica.
- Genética Humana Genética Humana.
- Biología Molecular Biología Molecular
Sus antecedentes:
- La secuencia del genoma humano sirve como referencia para el estudio de la variación de la secuencia de ADN.
- Las variantes de secuencia, particularmente los polimorfismos de un solo nucleótido (SNP), contribuyen a las diferencias genéticas individuales, influyendo en rasgos como la susceptibilidad a enfermedades y la respuesta a medicamentos.
- Un mapa de alta densidad de SNPs es crucial para identificar variaciones genéticas vinculadas a características específicas.
Objetivo del estudio:
- Evaluar métodos de secuenciación a gran escala para el descubrimiento de SNP.
- Para construir un mapa de alta densidad de SNPs en todo el genoma humano.
- Facilitar estudios de asociación para la identificación de variantes genéticas relacionadas con enfermedades.
Principales métodos:
- Se emplearon enfoques de secuenciación a gran escala para la identificación de SNP.
- Se construyó un mapa de 2.730 SNPs para el cromosoma humano 22.
- El programa del Consorcio SNP aumentó la detección de SNP a más de 65.000 en todo el genoma.
Principales resultados:
- Se generó un mapa de 2.730 SNPs para el cromosoma humano 22, con la mayoría ubicados cerca de los exones transcritos.
- Más de 65.000 SNPs han sido identificados en todo el genoma como parte de The SNP Consortium.
- El programa tiene como objetivo crear un mapa público de SNP con una densidad de 1 SNP por cada 5 kilobases, integrado con la secuencia del genoma humano.
Conclusiones:
- Los mapas SNP desarrollados son recursos valiosos para estudios de asociación genética.
- El descubrimiento de SNP a gran escala es factible y progresa rápidamente.
- La disponibilidad pública de este mapa del SNP acelerará la investigación sobre la base genética de los rasgos y enfermedades humanas.
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