男性の肝臓を受注した女性のヒトにおける全身的なキメリズム
T E Starzl1, A J Demetris, M Trucco
1Pittsburgh Transplant Institute, PA.
Lancet (London, England)
|October 10, 1992
まとめ
臓器移植の許容性は,バランスのとれた免疫細胞キメラリズムと関連しています. 男性ドナーから肝臓移植を受けた女性では,組織にY染色体DNAが持続しており,長期的な免疫細胞共有と移植受容を示しています.
科学分野:
- 免疫学 免疫学とは
- 移植科学 移植科学とは
- 遺伝学 遺伝学とは
背景:
- 臓器移植の成功は,免疫耐性に依存しています.
- 以前の研究では,リンパ節細胞のキメリズムが移植受容の鍵であると示唆されていました.
- この研究では,ヒト肝臓アロ移植受容者のキメリズムを調査しています.
研究 の 目的:
- バランスの取れたリンパ節細胞キメリスムは臓器耐性を促進するという仮説のさらなる証拠を提供するために.
- 長期的なヒト肝臓アロインプラント受容者におけるキメリスムの存在と範囲を調査する.
主な方法:
- HLA不一致の肝臓アロ移植受信者 (女性受信者,男性ドナー) の分析.
- In-situハイブリデーションと,ドナー由来細胞 (Y染色体) を検出するための分子技術.
- アロ移植,肝臓外組織,血液,皮膚,リンパ節の検査.
主要な成果:
- すべての9人の女性受容者は,移植後10〜19年の間,移植と肝臓外組織でキメリズムを示しました.
- Y染色体DNAは,良好な移植機能を持つ受容者の血液,皮膚,リンパ節で検出されました.
- また,移植不全の患者の様々な組織でキメリズムが発見され,継続的な細胞移動を示唆した.
結論:
- 肝臓アロ移植を受けた患者には長期のキメリズムが存在し,免疫耐性における肝臓の役割を支持しています.
- 肝臓の豊富な移動細胞集団は,肝臓のユニークな耐受性に影響を与える可能性があります.
- これらの発見は,移植の成功のために免疫細胞交換の重要性を強化しています.
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