Abstract
This study investigated the gastrointestinal microbiota in three genetically identical cloned dogs (A, B and C) by somatic cell nuclear transfer. We collected feces from three cloned dogs and their feed to investigate gastrointestinal microbiota using both culture-dependent and culture-independent methods. A total of 962 strains from the feces of cloned dogs were isolated using aerobic and anaerobic culture methods. The dominant microorganisms were Enterococcus faecalis and Enterococcus faecium in all fecal samples. In particular, the fecal sample from cloned dog C had similar proportions of three species (E. faecalis, E. faecium and Lactobacillus murinus). In all, 29 DNA fragments were identified by PCR-denaturing gradient gel electrophoresis (DGGE) analysis. The highest DGGE band intensities were for E. faecalis from cloned dogs A and C and for Clostridium sordellii from cloned dog B, with relative intensities of 15.2, 17.7 and 14.4%, respectively. The other strains identified from the cloned dogs were Chryseobacterium soldanellicola, Escherichia coli, L. murinus, Streptococcus alactolyticus, Weissella confusa and uncultured bacterium. Some microbes isolated from the fecal samples, including C. soldanellicola and W. confuse, were derived from the feed. Overall, gastrointestinal microbiota of all genetically identical cloned dogs, maintained under the same environmental and feeding conditions, showed similar profiles in terms of species diversity analyzed by PCR-DGGE, although there were proportional differences in the amounts of bacterial species. To our knowledge, this is the first report to investigate and compare gastrointestinal microbiota of three genetically identical dogs.
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Yoo, J.G., Hong, S.W., Kim, JH. et al. Potential application of genetically identical somatic cell nuclear transfer-cloned dogs for gastrointestinal microbiota analysis. Biotechnol Bioproc E 22, 30–36 (2017). https://doi.org/10.1007/s12257-016-0630-6
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DOI: https://doi.org/10.1007/s12257-016-0630-6