Genes & Genetic Systems
Online ISSN : 1880-5779
Print ISSN : 1341-7568
ISSN-L : 1341-7568
91 巻 , 6 号
選択された号の論文の9件中1~9を表示しています
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Full papers
  • Seiji Masuda, Kosuke Nozawa, Wataru Matsunaga, Yukari Masuta, Akira Ka ...
    原稿種別: Full paper
    2016 年 91 巻 6 号 p. 293-299
    発行日: 2016/12/01
    公開日: 2017/05/13
    [早期公開] 公開日: 2016/12/14
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    Natural accessions are used for studying intraspecies genetic variation in the model plant Arabidopsis thaliana in order to address fundamental questions of evolution. Transposable elements are responsible for a wide range of mutations and play significant roles in shaping a genome over evolutionary time. In the present study, we aimed to characterize ONSEN, a heat-activated long terminal repeat (LTR) retrotransposon, in natural A. thaliana accessions. Southern blot analysis demonstrated that ONSEN was present in all the studied accessions, but the copy number was diverse. Olympia-1 contained a single ONSEN copy, located in the centromere of Chromosome 3. A premature stop codon in Olympia-1 ONSEN presumably abolishes integrase activity, which in turn presumably renders the retrotransposon non-functional. Hybridization of Col-0 with Olympia-1 showed that several ONSEN copies in Col-0 were activated by heat stress and maintained their transpositional activity in the progeny.

  • Diego Albani, Elisabetta Pupillo, Elisa Bianchi, Armando Chierchia, Ro ...
    原稿種別: Full paper
    2016 年 91 巻 6 号 p. 301-309
    発行日: 2016/12/01
    公開日: 2017/05/13
    [早期公開] 公開日: 2017/02/24
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    Amyotrophic lateral sclerosis (ALS) is a multifactorial disease, possibly with contributions from genetics and lifestyle. We examined variants in genes relevant to energy metabolism and physical activity in a case-control association study, with the aim of assessing genetics and physical activity as contributors to ALS risk. A well-characterized sample of Italian ALS patients (101) and controls (101) from the EURALS Consortium underwent a questionnaire interview on demographic, physical and other lifestyle habits, and venipuncture for DNA extraction. The genes selected were sirtuin 3 (SIRT3), peroxisome proliferator-activated receptor-γ coactivator-1α (PPARGC1A) and apolipoprotein E (APOE). Genetic studies suggested, for the first time, a protective role of the SIRT3 single-nucleotide polymorphism rs4980329 in ALS risk, and a contribution of the APOE-ε2 allele, which was more frequent in ALS patients than in controls. A joint analysis coupling genetic data and sporting activity revealed opposite roles of APOE-ε2 and SIRT3 rs3825075, the former being more frequent in physically active ALS patients and the latter more frequent in physically inactive patients. These findings suggest a contribution to ALS risk of genetic and environmental factors involved in energy metabolism, and stress the importance of a multifactorial analysis for evaluating this risk.

Short communication
  • Faeghe Aghajani, Mohammad Reza Mahdavi, Mehrnoush Kosaryan, Mehrad Mah ...
    原稿種別: Short communication
    2016 年 91 巻 6 号 p. 311-313
    発行日: 2016/12/01
    公開日: 2017/05/13
    [早期公開] 公開日: 2016/12/21
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    Carrier frequency of the βS allele has been reported to be 0.19% in Mazandaran province, northern Iran. Haplotype analysis of the βS allele helps trace the origin of its encoded hemoglobin (Hb) variant, Hb S, in a region. The aim of this study was to investigate the haplotypes associated with βS alleles in Mazandaran province. Capillary electrophoresis was carried out to detect individuals suspected to have a βS allele(s). DNA analysis (PCR-RFLP) was used for final confirmation. To identify 5′ to 3′ β-globin gene cluster haplotypes associated with βS alleles, family linkage analysis was applied. Six polymorphic sites (HincII 5′ to ε, XmnI 5′ to Gγ, HindIII in Gγ, HindIII in Aγ, HincII 3′ to ψβ and AvaII in β) were investigated using the PCR-RFLP method. Five different haplotypes were linked to βS alleles, while βA alleles were associated with nine haplotypes. Among the βS alleles, 53.9% were associated with the Benin (----++) haplotype, and the Arab-Indian (+++-++) haplotype had the second-highest frequency (23%). Unlike southern provinces, where the Arab-Indian haplotype is prominent, the Benin haplotype is the most frequent haplotype in northern Iran, and this may represent a founder effect. Since the Benin haplotype does not carry the XmnI polymorphism 5′ to the Gγ gene, which is responsible for high expression of Hb F, a severe form of sickle cell disease can be anticipated in patients that are homozygous for the βS allele in the northern region.

Abstracts of Papers Presented at the 88th Annual Meeting of the Genetics Society of Japan
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