ヒトの血液代謝データの統合を可能にするため,水性代謝産物のLC/MSメソッドの評価
Yuri Imado1, Masatomo Takahashi1,2, Yuki Soma2,3,4
1Department of Systems Life Sciences, Graduate School of Systems Life Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
Mass spectrometry (Tokyo, Japan)
|February 12, 2026
まとめ
本研究では,ヒトの血中の水性代謝物質の分析のための4つの液体染色体質スペクトロメトリー (LC/MS) 方法を比較しています. 結果は,安定同位体ラベル付の内部標準 (SILIS) を使用した絶対定量化が,精密医学のための水性代謝産物データを効果的に統合することを示しています.
科学分野:
- メタボロミクスとは
- アナリティカル・ケミストリー (Analytical Chemistry) とは
- バイオマーカーの発見
背景:
- 候補バイオマーカーメタボライトは,パーソナライズされた医療と精密医療において極めて重要です.
- 液体染色体-質量スペクトロメトリー (LC/MS) は,重要な代謝分析技術である.
- 水性代謝産物に対するLC/MSの適性については,さらなる評価が必要である.
研究 の 目的:
- 水性代謝産物に対する4つのLC/MSメソッドの質的・量的な性能を評価・比較する.
- ヒトのプラズマメタボロームデータを統合する方法を評価する.
- NIST SRM 1950におけるメタボリートの新しい濃度値を推定する.
主な方法:
- 4つのLC/MS方法 (HILIC/MS,AEX-IC/MS,PFPP-RPLC/MS,Unified-HILIC/AEX/MS) の質的評価は,メタボライト基準とNIST SRM 1950を用いて行われた.
- 安定イソトープラベル付内部標準 (SILIS) を使用した63の水性代謝物の定量評価.
- オービトラップの質量スペクトロメーターで実施した分析.
主要な成果:
- メタボロームのカバー,ピーク幅,感度,および同位体分離の包括的な質的評価.
- SILISを使用した水性代謝産物の効果的な定量性能評価.
- SRM 1950で29の代謝産物の新しい濃度値の推定が成功しました.
結論:
- SILISを用いた絶対定量化は,メタボロミクスの水性代謝産物データを統合するのに有効です.
- 異なるLC/MSメソッドの客観的な性能評価は,将来のヒト血代謝体研究のための洞察を提供します.
- この研究は,強力な代謝分析を通じて,精密医療の進歩をサポートしています.
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