JP2012515902A - マススペクトロメトリーにより特に未知物質を同定するための方法 - Google Patents
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Abstract
【選択図】図2
Description
2種以上の物質の構造類似性の決定手順を、次のドーパミンとチラミンを用いた例で説明する。両物質とも生体アミンに属し、非常に類似した構造を有する(図1、4参照)。
次に、物質の分類手順をヒスチジンと4−ヘキソシロキシベンゾイルコリンを用いた例で説明する。比較として他の35種類の物質の仮定フラグメンテーションチャートを使用した。
Claims (15)
- 特に未知物質をマススペクトロメトリーにより同定するための方法であって、次の各段階:
a)同定対象の物質の1以上のマススペクトロメトリー・フラグメンテーションスペクトル(娘イオンスペクトル)を取得することと、
b)前記1以上のマススペクトロメトリー・フラグメンテーションスペクトルから前記物質のフラグメンテーションチャートを作出することと、ここにおいて前記1以上のフラグメンテーションスペクトルによって測定されて前記フラグメンテーションチャート中に示される物質フラグメントは、オブジェクトとリンクによるフラグメンテーション反応とによって表されるものであり、
c)物質の構造及び/又は物質クラス及び/又は化学的性質に基づいて該物質を同定する目的で、前記フラグメンテーションチャート全体又は一部のデータを参照データと比較することと、を含む方法。 - 前記フラグメンテーションチャートは、典型的には物質フラグメントとしてのノードとフラグメンテーション反応(リンク)としてのエッジとによって表されることを特徴とする、請求項1に記載の方法。
- 前記フラグメンテーションチャートは、ノードとエッジを有する典型的表現とは異なる数学的表現、例えば半順序、関係、又は階層を用いて表されることを特徴とする、請求項1に記載の方法。
- 前記フラグメンテーションチャートは自動的に作出されることを特徴とする、請求項2又は3に記載の方法。
- 前記フラグメンテーションチャートと前記参照データとの比較が局所的に行われ、前記フラグメンテーションチャートのオブジェクトとリンクの全てではなく、比較法において目的に適うように自動的に選択された部分のみが比較に用いられることを特徴とする、請求項1に記載の方法。
- 前記比較は、ペアワイズ・アライメントによって行われることを特徴とする、請求項1及び5に記載の方法。
- 前記比較は、マルチプル・アライメントによって行われることを特徴とする、請求項1及び5に記載の方法。
- 前記比較は計算によって行われることを特徴とする、請求項1及び5〜7の一項以上に記載の方法。
- 前記フラグメンテーションチャートのデータは、電子的データベースに保存された参照データと比較されることを特徴とする、請求項8に記載の方法。
- 前記比較は、前記フラグメンテーションチャートのデータを創出するマススペクトロメトリー分析装置により行われ、該装置は電子的データベースを包含した計算ユニットと連結されていることを特徴とする、請求項9に記載の方法。
- 前記1以上のマススペクトロメトリー・フラグメンテーションスペクトルがタンデムマススペクトロメーターによって作成されることを特徴とする、請求項1に記載の方法。
- 前記1以上のマススペクトロメトリー・フラグメンテーションスペクトルが多重フラグメンテーション(MSn)によって作成されることを特徴とする、請求項1に記載の方法。
- 前記フラグメンテーションは衝突誘起脱離(CID)によって行われることを特徴とする、請求項1に記載の方法。
- 前記1以上のマススペクトロメトリー・フラグメンテーションスペクトルを取得する前に、例えば液体クロマトグラフィー、ガスクロマトグラフィー又はキャピラリー毛細管電気泳動によって物質分離が行われることを特徴とする、請求項1に記載の方法。
- フラグメンテーションチャートのデータを参照データと比較することに加えて、被験物質のクロマトグラフィー反応時間及び/又は電気泳動経過時間及び/又は紫外線吸収スペクトルを該物質の同定のために他の比較基準として利用されることを特徴とする、請求項1に記載の方法。
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DE102009005845A DE102009005845A1 (de) | 2009-01-21 | 2009-01-21 | Verfahren zur Indentifizierung insbesondere unbekannter Substanzen durch Massenspektrometrie |
PCT/DE2010/000054 WO2010083811A1 (de) | 2009-01-21 | 2010-01-15 | Verfahren zur identifizierung insbesondere unbekannter substanzen durch massenspektrometrie |
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JP5559816B2 JP5559816B2 (ja) | 2014-07-23 |
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EP (1) | EP2389588A1 (ja) |
JP (1) | JP5559816B2 (ja) |
CA (1) | CA2750231A1 (ja) |
DE (1) | DE102009005845A1 (ja) |
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JP2020118542A (ja) * | 2019-01-23 | 2020-08-06 | 日本電子株式会社 | 組成推定装置及び方法 |
WO2022239609A1 (ja) * | 2021-05-10 | 2022-11-17 | 株式会社 東芝 | モジュラー型時系列データ予測装置、モジュラー型時系列データ予測方法、および、プログラム |
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US11094399B2 (en) * | 2011-01-11 | 2021-08-17 | Shimadzu Corporation | Method, system and program for analyzing mass spectrometoric data |
DE102011014805A1 (de) | 2011-03-18 | 2012-09-20 | Friedrich-Schiller-Universität Jena | Verfahren zur Identifizierung insbesondere unbekannter Substanzen durch Massenspektrometrie |
US9129783B2 (en) * | 2012-04-05 | 2015-09-08 | Micromass Uk Limited | MS/MS analysis using ECD or ETD fragmentation |
US10840073B2 (en) * | 2012-05-18 | 2020-11-17 | Thermo Fisher Scientific (Bremen) Gmbh | Methods and apparatus for obtaining enhanced mass spectrometric data |
US10825668B2 (en) * | 2015-08-13 | 2020-11-03 | Dh Technologies Development Pte. Ltd. | Library search tolerant to isotopes |
CN105136925A (zh) * | 2015-08-26 | 2015-12-09 | 中南大学 | 一种中药所含系列成分检测鉴定的分析系统 |
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JP2020118542A (ja) * | 2019-01-23 | 2020-08-06 | 日本電子株式会社 | 組成推定装置及び方法 |
JP7096174B2 (ja) | 2019-01-23 | 2022-07-05 | 日本電子株式会社 | 組成推定装置及び方法 |
WO2022239609A1 (ja) * | 2021-05-10 | 2022-11-17 | 株式会社 東芝 | モジュラー型時系列データ予測装置、モジュラー型時系列データ予測方法、および、プログラム |
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EP2389588A1 (de) | 2011-11-30 |
JP5559816B2 (ja) | 2014-07-23 |
DE102009005845A1 (de) | 2010-07-22 |
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