title: Sequential cross-species chromosome painting among river buffalo, cattle, sheep and goat: a useful tool for chromosome abnormalities diagnosis within the family Bovidae.
abstract: The main goal of this study was to develop a comparative multi-colour Zoo-FISH on domestic ruminants metaphases using a combination of whole chromosome and sub-chromosomal painting probes obtained from the river buffalo species (Bubalus bubalis, 2n = 50,XY). A total of 13 DNA probes were obtained through chromosome microdissection and DOP-PCR amplification, labelled with two fluorochromes and sequentially hybridized on river buffalo, cattle (Bos taurus, 2n = 60,XY), sheep (Ovis aries, 2n = 54,XY) and goat (Capra hircus, 2n = 60,XY) metaphases. The same set of paintings were then hybridized on bovine secondary oocytes to test their potential use for aneuploidy detection during in vitro maturation. FISH showed excellent specificity on metaphases and interphase nuclei of all the investigated species. Eight pairs of chromosomes were simultaneously identified in buffalo, whereas the same set of probes covered 13 out 30 chromosome pairs in the bovine and goat karyotypes and 40% of the sheep karyotype (11 out of 27 chromosome pairs). This result allowed development of the first comparative M-FISH karyotype within the domestic ruminants. The molecular resolution of complex karyotypes by FISH is particularly useful for the small chromosomes, whose similarity in the banding patterns makes their identification very difficult. The M-FISH karyotype also represents a practical tool for structural and numerical chromosome abnormalities diagnosis. In this regard, the successful hybridization on bovine secondary oocytes confirmed the potential use of this set of probes for the simultaneous identification on the same germ cell of 12 chromosome aneuploidies. This is a fundamental result for monitoring the reproductive health of the domestic animals in relation to management errors and/or environmental hazards.
authors.affiliation: Institute for Animal Production System in Mediterranean Environment, National Research Council, Naples, Italy.
authors.forename: Alfredo
authors.initials: A
authors.lastname: Pauciullo
authors.affiliation: Institute for Animal Production System in Mediterranean Environment, National Research Council, Naples, Italy.
authors.forename: Angela
authors.initials: A
authors.lastname: Perucatti
authors.affiliation: Department of Agriculture, University of Naples Federico II, Portici, Italy.
authors.forename: Gianfranco
authors.initials: G
authors.lastname: Cosenza
authors.affiliation: Institute for Animal Production System in Mediterranean Environment, National Research Council, Naples, Italy.
authors.forename: Alessandra
authors.initials: A
authors.lastname: Iannuzzi
authors.affiliation: Institute for Animal Production System in Mediterranean Environment, National Research Council, Naples, Italy.
authors.forename: Domenico
authors.initials: D
authors.lastname: Incarnato
authors.affiliation: Institute for Animal Production System in Mediterranean Environment, National Research Council, Naples, Italy.
authors.forename: Viviana
authors.initials: V
authors.lastname: Genualdo
authors.affiliation: Department of Agriculture, University of Naples Federico II, Portici, Italy.
authors.forename: Dino
authors.initials: D
authors.lastname: Di Berardino
authors.affiliation: Institute for Animal Production System in Mediterranean Environment, National Research Council, Naples, Italy.
authors.forename: Leopoldo
authors.initials: L
authors.lastname: Iannuzzi
mesh_terms: D000818:Animals; D002869:Chromosome Aberrations; D020223:Chromosome Painting / Q000379:methods*; D059785:Karyotype; D012418:Ruminants / Q000235:genetics*