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2016 年度 実施状況報告書

Comprehensive identification of cis-regulatory elements involved in the evolutionary origin of the turtle carapace.

研究課題

研究課題/領域番号 16K18595
研究機関国立研究開発法人理化学研究所

研究代表者

PASCUAL JUAN  国立研究開発法人理化学研究所, 倉谷形態進化研究室, 研究員 (30594098)

研究期間 (年度) 2016-04-01 – 2018-03-31
キーワード比較ゲノム / 形態進化
研究実績の概要

In order to finely assess the regulatory state of the carapacial ridge, I proposed to perform ATAC sequencing. This technique allows the identification of open chromatin (and thus probably exerting a function) to the nucleotide level. As for the last fiscal year, I was able to collect carapacial ridges as well as limbs and body walls of turtle embryos at stage 14 and was able to successfully sequence the corresponding ATAC libraries. Moreover, I have presented my work related with the origin of the turtle carapace in an international meeting, in China, to which I was invited to give a talk in the World Congress of Herpetology. I also presented a poster in the European Evo-Devo meeting in Sweden.

現在までの達成度 (区分)
現在までの達成度 (区分)

2: おおむね順調に進展している

理由

My project had two solid phases stated in the proposal: one for the first year, in which I planned to perform ATAC-seq analysis, and another research plan for the second fiscal year, in which I will aim at doing ChIP-seq analysis against turtle Lef1 and beta-catenin. The plan for the first fiscal year has been successfully completed. I was able to construct good ATAC-seq libraries for the tissues mentioned in the previous section, and already got the data from the sequencing provider. At the moment, I am analyzing these data, whose results are promising.

今後の研究の推進方策

For the next fiscal year, I will focus on completing the ChIP-seq analysis that I proposed in my Kakenhi project. This will involve seeking for specific antibodies against the turtle Lef1 and beta-catening proteins. In case that commercial antibodies fail, this will mean a delay in the project since I will have to generate custom antibodies, a process that usually takes about 3 months. Fortunately, we are already checking commercial antibodies. Once I have found these antibodies, I will proceed with the ChIP experiment, for which I already have experience from my previous project (histone modifications ChIP-seq analysis).

次年度使用額が生じた理由

By means of outsourcing the sequencing, I was able to get the necessary data at a lower price, together with more efficient experiments and less expenditure in business trips.

次年度使用額の使用計画

I will be able to sequence even more data in this fiscal year using the remanent money from last one, expectedly up to two lanes of PE 100 data from a HiSeq4000.

  • 研究成果

    (2件)

すべて 2016

すべて 学会発表 (2件) (うち国際学会 1件、 招待講演 1件)

  • [学会発表] Transcriptomic and epigenomic analysis of the turtle carapace2016

    • 著者名/発表者名
      Juan Pascual-Anaya, Shigeru Kuratani
    • 学会等名
      8th World Congress of Herpetology
    • 発表場所
      Hangzhou, China
    • 年月日
      2016-08-17
    • 国際学会 / 招待講演
  • [学会発表] Regulatory evolution leading to morphological innovations: the case of the mesmerizing turtle carapace2016

    • 著者名/発表者名
      Juan Pascual-Anaya, Shigeru Kuratani
    • 学会等名
      6th Meeting of the European Society for Evolutionary Developmental Biology
    • 発表場所
      Uppsala, Sweden
    • 年月日
      2016-07-26

URL: 

公開日: 2018-01-16  

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