Antennapedia遺伝子を破壊する逆転は,RNAの異常な構造と局所化を引き起こします

L E Frischer, F S Hagen, R L Garber

Cell

|December 26, 1986

まとめ

ドロソフィラのホメオティック遺伝子変異は,身体の一部が変形する原因となる. 支配的なアンテナペディア (Antp) 変異は,遺伝子発現を変えることで,アンテナの代わりに頭の上に足が成長する.

科学分野:

発達生物学発達生物学とは
遺伝学遺伝学とは
分子生物学は分子生物学である.

背景:

ホメオティック遺伝子は,ドロソフィラの身体部分の発達を制御する.
変異により,ある身体部位が別の身体部位として発達する可能性があります.

研究の目的:

アンテナから足への変異を引き起こすアンテナペディア (Antp) 遺伝子変異の背後にあるメカニズムを調査する.
Antp遺伝子の活性が頭部領域でどのように変化するかを理解するために.

主な方法:

ドロソフィラのAntp73b逆転変異の分析.
頭部におけるAntp RNAトランスクリプトの検出と特徴付け.
Antp遺伝子を含む融合トランスクリプトの識別.

主要な成果:

Antp73b変異は,通常不活性である頭部におけるAntp遺伝子転写を引き起こします.
2種類のAntpトランスクリプトが見つかりました:正常サイズRNAと融合RNAです.
融合RNAは,通常頭部で発現する遺伝子のエクソンを組み込みました.

結論:

頭部における異常なAntp遺伝子の活性化は,おそらく融合トランスクリプトによるもので,頭部構造を胸部構造に変容させる.
この研究は,変異した遺伝子調節とトランスクリプト形成によって引き起こされるホメオティック変異のメカニズムを明らかにしています.

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