侵襲性乳がんへの移行は,腫瘍ストロマの構造と組成の進行的な変化と関連しています
Tyler Risom1, David R Glass2, Inna Averbukh2
1Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA; Department of Research Pathology, Genentech, South San Francisco, CA, USA.
Cell
|January 22, 2022
まとめ
乳がん進行中の腫瘍微環境 (TME) の調査は,異なるTME状態を明らかにした. 乳腺管内がん (DCIS) のミオエピテリア細胞の変化は,侵入性乳がん (IBC) の再発を防ぐことができます.
科学分野:
- 腫瘍学
- 癌 生物学
- 免疫学
背景:
- 管内がん in situ (DCIS) は,侵襲性乳がん (IBC) に先立つ前侵襲性乳がんである.
- 腫瘍の微小環境 (TME) を理解することは,乳がんの進行要因を特定するために極めて重要です.
研究 の 目的:
- 正常な乳組織からDCISとIBCへの移行中のTMEの変化を特徴づける.
- IBCの再発リスクの潜在的バイオマーカーを特定する.
主な方法:
- 飛行時間による多重イオンビームイメージング (MIBI-TOF) を79回の外科切除で利用した.
- 細胞セグメンテーション,クラスタリング,形態測定のための応用機械学習.
- ミオエピテリウム,線維芽細胞,免疫細胞の分布と機能に基づいてTME状態を分析した.
主要な成果:
- 乳がんの進行と関連した4つの調整されたTME状態を特定しました.
- IBCに進行しなかったDCISの症例では,より高度な肌内膜障害が観察されました.
- ミョウエピテリアの整合性に対する潜在的な保護作用を示唆する.
結論:
- TMEはIBCの再発を制御する上で重要な役割を果たします.
- DCISにおける肌皮細胞の状態は,将来の侵襲性疾患と再発を予測することができる.
- この研究は,乳がんの進化を理解するために,HTANの乳がん前がんアトラスの洞察を提供します.
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