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女性の生殖器系・オン・チップで,超低DNA断片化指数を持つ精子を選択する

Jing Dai^1,2, Han Shan^3,4,5, Yifan Gu^6,7

¹NHC Key Laboratory of Human Stem Cell and Reproductive Engineering, Xiangya School of Basic Medical Sciences, Central South University, Changsha, China. daijing2021@csu.edu.cn.

Microsystems & nanoengineering

|February 14, 2026

まとめ

低DNA断片化指数 (DFI) の精子の選択は,男性の不妊症にとって極めて重要です. 新型女性生殖器管オンチップ (FRToC) デバイスは,超低DFIの精子を成功裏に分離し,助産生殖技術 (ART) を改善しました.

科学分野:

生殖生物学生殖生物学
バイオメディカルエンジニアリング
遺伝学遺伝学とは

背景:

高精子DNA断片化指数 (DFI) は男性不妊症の重要な原因である.
DFIは胚の発達と子孫の健康に悪影響を及ぼします.
低DFIの精子を選択する現在の方法は困難です.

研究の目的:

DFI.超低度の精子を分離するための器官レベルの選択戦略を開発する.
女性生殖器系オンチップ (FRToC) デバイスの作成と検証を,in vivoのような精子選択のために行いました.
FRToCで選択された精子の品質,運動性,完全性,染色体安定性を評価する.

主な方法:

生理学的マイクロ環境を模倣する女性の生殖器系オンチップ (FRToC) デバイスの製造.
DFIレベルが異なる患者の精液サンプルを用いた臨床検証.
精子品質 (DFI,運動性,アクロソーム完全性),プロテオミクス,単細胞複製数変数 (CNV) の分析.

主要な成果:

FRToC装置は,DFIの顕著な減少を達成し,生精の平均41.93%から精子選択の0.71%まで減少しました.
選択された精子は,生精と比較して優れた運動性とアクロソームの完全性を示した.
FRToCで分類された精子は,酸化ストレスを軽減し,染色体の完全性を維持する能力が向上したことを示した.

結論:

FRToCデバイスは,超低 DFI の高品質の精子を選択するための効果的な臓器レベルの戦略を提供します.
この技術は,助産生殖技術 (ART) の成果を改善するための大きな希望を持っています.
この方法は,高精子のDNA断片化に関連した男性不妊症に対する潜在的な解決策を提供します.

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