Development and Practice of Introductory Teaching Materials for Science "Problem- Based Learning" on the Theme of "Removal of Roadside Utility Poles"

P(論文)平成29年～ 30年に改訂された学習指導要領においては，持続可能な開発のための教育（ESD）や主権者教育などが取り上げられている．本稿では，新・逆向き設計に基づき，SDGsに関連した政策の評価を「総合的な学習の時間」で生徒が取り組めるようにするため，各教科で行う探究活動の準備段階で用いるゲーミング教材について，特に理科の物理と生物の知識を活用する教材を開発した．教材は無電柱化の政策に関する評価を題材とし，学習した知識と関連付ける形で優先的に無電柱化に取り組む地域の優先度を検証する活動を通じて，探究活動の流れと探究における知識活用の方法論を学び今後取り組む探究活動や市民生活における理科の知識の活用の見通しを得ることを教材の目標とした．実践の結果，生徒は理科の知識の重要性を認識した一方，教材に関しては化学の知識活用の追加，時間配分の改善，定量的評価を用いた探究の導入の3 点の改善点があった．departmental bulletin pape

Reconstitution of C9orf72 GGGGCC repeat-associated non-AUG translation with purified human translation factors

Abstract Nucleotide repeat expansion of GGGGCC (G4C2) in the non-coding region of C9orf72 is the most common genetic cause underlying amyotrophic lateral sclerosis and frontotemporal dementia. Transcripts harboring this repeat expansion undergo the translation of dipeptide repeats via a non-canonical process known as repeat-associated non-AUG (RAN) translation. In order to ascertain the essential components required for RAN translation, we successfully recapitulated G4C2-RAN translation using an in vitro reconstituted translation system comprising human factors, namely the human PURE system. Our findings conclusively demonstrate that the presence of fundamental translation factors is sufficient to mediate the elongation from the G4C2 repeat. Furthermore, the initiation mechanism proceeded in a 5′ cap-dependent manner, independent of eIF2A or eIF2D. In contrast to cell lysate-mediated RAN translation, where longer G4C2 repeats enhanced translation, we discovered that the expansion of the G4C2 repeats inhibited translation elongation using the human PURE system. These results suggest that the repeat RNA itself functions as a repressor of RAN translation. Taken together, our utilization of a reconstituted RAN translation system employing minimal factors represents a distinctive and potent approach for elucidating the intricacies underlying RAN translation mechanism