Molecular approach of the fragile chromosomal region Xq31-34 in cattle (Bos taurus) by microdissection and DOP-PCR

Autor:	M.V. Arruga, S. Llambí
Rok vydání:	2008
Předmět:	X sexual chromosome Genetics congenital hereditary and neonatal diseases and abnormalities General Veterinary Chromosomal fragile site Chromosome DOP-PCR Biology Chromosomal Fragility microdissection Molecular analysis cattle Chromosomal region fragile sites Gene Microdissection
Zdroj:	Arquivo Brasileiro de Medicina Veterinária e Zootecnia v.60 n.4 2008 Arquivo brasileiro de medicina veterinária e zootecnia Universidade Federal de Minas Gerais (UFMG) instacron:UFMG
ISSN:	0102-0935
DOI:	10.1590/s0102-09352008000400023
Popis:	Fragile sites (FS) are chromosomal regions where the normal compactation of chromatine is not observed. FRAXA (Fra Xq27.3, X sexual chromosome) is one of the most studied FS in humans. FRAXA is an expansion of the trinucleotide CGG located in the gene FMR-1. In cattle, sites of chromosomal fragility were reported in BTAX, associated with different pathologies and fertility impairment. Chromosomal microdissection has became a valuable tool for isolating chromatine fragments. In this work, it was combined the chromosomal microdissection technique with DOP-PCR in order to carry out a molecular analysis of the fragile chromosomal region BTAXq31-34. In that region, polymorphic DNA-RAPD sequences (GC rich) are present and sequences of the gene FMR-1 are missing. The results showed the usefulness of the microdissection-DOP-PCR technique for molecular characterization of fragile chromosomal sites in cattle.
Databáze:	OpenAIRE
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