v-ets腫瘍遺伝子の単点変異は,赤色素体および骨髄単細胞細胞の分化の両方に影響を及ぼします
1Differentiation Program, European Molecular Biology Laboratory, Heidelberg, Federal Republic of Germany.
Cell
|December 23, 1988
まとめ
鳥類白血病ウイルスE26
科学分野:
- 腫瘍学 腫瘍学
- 分子生物学は分子生物学である.
- ウイルス学 ウイルス学 ウイルス学
背景:
- 鳥類白血病ウイルスE26にはv-mybとetsの腫瘍遺伝子が含まれており,赤色芽細胞と骨髄芽細胞を変容させることができる.
- 以前の研究では,v-mybが骨髄細胞の変容に十分であることを示しましたが,v-etsの役割は不明でした.
- 血液生成細胞の変容におけるv-mybとv-etsの特定の役割を理解することは,白血病の研究にとって極めて重要です.
研究 の 目的:
- 鳥類白血病ウイルスE26.2による血液形成細胞の変異におけるv-ets遺伝子の特異的機能を明らかにする.
- V-ets変異を持つE26の温度感受性突然変異によって変形したミエロイド細胞の表型変化を調査する.
- 血液形成細胞系統におけるv-etsの潜在的な関与を調査する.
主な方法:
- v-ets遺伝子の変異を有するE26の温度感受性変異体 (ts1.1) の分離と特徴付け.
- 変容検査は,赤色素体および骨髄細胞のTS1.1変異体を用いて行われます.
- 成熟したマクロファージを含む変形した細胞のフェノタイプ分析により,分化状態を評価する.
主要な成果:
- ts1.1変異体は,赤血球細胞の温度に敏感な変異を示した.
- ts1.1によって変換されたミエロイド細胞は,プロミエロサイトに似た変異したフェノタイプを示した.
- 成熟したマクロファージがts1.1に感染すると,プロミエロサイト型細胞に変異する.
結論:
- p135gag-myb-etsタンパク質のv-etsドメインは,エリソイドおよびミエロイド細胞の分化の両方に影響を及ぼします.
- この発見は,細胞 ets (c-ets) と myb (c-myb) 遺伝子が,血液形成細胞系統のコミットメントにおける潜在的な役割を示唆している.
- この研究は,血液細胞の分化経路を調節する上で,V-ETの重要な役割を強調しています.
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