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Identification of the Gene Responsible for Chicken Muscular Dystrophy
Hirokazu Matsumoto,Shinji Sasazaki,Hideyuki Mannen 韓國家禽學會 2011 韓國家禽學會誌 Vol.38 No.2
By a series of positional cloning, we successfully narrowed down the AM candidate region to approximately 1.2 Mbp on GGA2q including 7 functional genes. Subsequently, we identified WWP1 gene as the most likely AM candidate by sequence comparison. The amino acid sequence around the candidate mutation was highly conserved among tetrapods, suggesting that WWP1 is the causative gene of chicken muscular dystrophy. Transfection of mutated WWP1 gene into C₂C₁₂ myoblasts disrupted muscle differentiation process. The abnormal muscle differentiation is a characteristic of chicken muscular dystrophy, so we could demonstrate a part of phenotype of the disease. Furthermore, western blotting revealed that accumulation of caveolin-3 protein is limited in damaged muscle of muscular dystrophic chicken, suggesting caveolin-3 may be associated with the pathological change of the disease. We could conclude that WWP1 gene is the responsible one for chicken muscular dystrophy from these results, but the mechanism leading the onset should be clarified in the future. The information will contribute to the study of chicken muscular dystrophy and the corresponding human dystrophies.
Identification of the Gene Responsible for Chicken Muscular Dystrophy
Matsumoto, Hirokazu,Sasazaki, Shinji,Mannen, Hideyuki The Korean Society of Poultry Science 2011 韓國家禽學會誌 Vol.38 No.2
By a series of positional cloning, we successfully narrowed down the AM candidate region to approximately 1.2 Mbp on GGA2q including 7 functional genes. Subsequently, we identified WWP1 gene as the most likely AM candidate by sequence comparison. The amino acid sequence around the candidate mutation was highly conserved among tetrapods, suggesting that WWP1 is the causative gene of chicken muscular dystrophy. Transfection of mutated WWP1 gene into $C_2C_{12}$ myoblasts disrupted muscle differentiation process. The abnormal muscle differentiation is a characteristic of chicken muscular dystrophy, so we could demonstrate a part of phenotype of the disease. Furthermore, western blotting revealed that accumulation of caveolin-3 protein is limited in damaged muscle of muscular dystrophic chicken, suggesting caveolin-3 may be associated with the pathological change of the disease. We could conclude that WWP1 gene is the responsible one for chicken muscular dystrophy from these results, but the mechanism leading the onset should be clarified in the future. The information will contribute to the study of chicken muscular dystrophy and the corresponding human dystrophies.
S-RNase Genotypes of Wild Apples Necessary for Utilization as Pollinizers
Shogo Matsumoto,Junko Morita,Kazuyuki Abe,Hideo Bessho,Kunio Yamada,Katsuhiro Shiratake,Hirokazu Fukui 한국원예학회 2009 Horticulture, Environment, and Biotechnology Vol.50 No.3
We investigated S-RNase genotypes of 21 wild apples with Neville Corpman, and King of Tompkins 1, 2 and 3 by the PCR-digestion method. M. sylvestris 392390 (T1-2-66) did not contain any known S-RNase allele, and seemed to be useful as a pollinizer. Thirteen individuals (M. baccata (S1-7-15), M. fusca, M. fusca F 50 (T1-16-51), M. orientalis (W1- 11-13), M. pumila Mill, M. pumila Pendula var. elise rathka, M. prunifolia USSR 18, M. prunifolia USSR 24, M. prunifolia USSR P, M. sieversii, M. sieversii (W1-10-49), M. sieversii sdl.2250 and M. sylvestris) contained an unidentified S-RNase allele with a known allele. Although M. baccata 4433 (79091) contained two known alleles, the S16a does not frequently occur in domestic Japanese cultivars. These wild apples also could be useful as pollinizers of cultivars in Japan, except for cultivars having an identical S-RNase allele. We have selected M. baccata 4433 (79091) as a pollinizer for the cultivar ‘Fuji’.
Narin Chanthawong,Satoru Takahashi,Kiyoshi Takamasu,Hirokazu Matsumoto 한국정밀공학회 2014 International Journal of Precision Engineering and Vol. No.
We developed a multi-Fabry-Pérot etalon (multi-FPE) for selecting high-frequency parts of repetition-frequency modes of a shortpulsemode-locked fiber laser at the wavelength of 1.55 mm. The 5-GHz repetition-modified laser beam is transmitted to a fiber-typeMichelson interferometer. The interference fringes exhibit a temporal coherence pattern and can be used for measuring spatialpositioning. The performance of CMM’s axis was determined directly from different positions of two interference fringes.