JP2015517315A - 質量分析法を用いた特性評価及び/または同定のための抗酸菌の不活性化及び抽出方法 - Google Patents
質量分析法を用いた特性評価及び/または同定のための抗酸菌の不活性化及び抽出方法 Download PDFInfo
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Abstract
Description
本発明は様々な形態で実施することができ、本明細書に記載した実施形態に限定されるものと解釈すべきではない。むしろ、これらの実施形態は本開示が詳細で完全なものとなり、本発明の範囲が当業者に十分伝わるようにするために提示するものである。例えば、一実施形態に関して例示した特徴を他の実施形態に組み込むことができ、特定の一実施形態に関して例示した特徴をその実施形態から削除することもできる。また、本開示に照らせば、本明細書に示した実施形態に対する本発明から逸脱しない様々な変更及び追加が当業者には理解されるであろう。
Claims (30)
- 試験試料中の抗酸菌の不活性化及び抽出方法であり、以下の連続した工程を含む方法:
(a)試験試料を、抗酸菌の含有が確認されている、または予想される固体または半固体培地から用意し、該試験試料をエタノール及びビーズを含む容器中で懸濁する工程;
(b)該容器をビーズ破砕及び/またはボルテックスし、該容器中の凝集塊を粉砕する及び/または抗酸菌細胞を粉砕する工程;及び
(c)その後、該懸濁液を少なくとも約5分間、室温でインキュベートし、該試験試料中に含まれる任意の抗酸菌を不活性化する工程。 - 請求項1に記載の方法であり、更に以下の連続した追加工程を含む方法:
(d)該容器を遠心分離にかけ、抗酸菌試料をペレット状にし、上澄み液を除去する工程;
(e)ギ酸中に該抗酸菌ペレットを再懸濁する工程;及び
(f)その後、該容器にアセトニトリルを加える工程。 - 請求項1または2に記載の方法であり、更に以下の連続した追加工程を含む方法:
(g)前記工程(f)の上澄み液のアリコートを質量分析ターゲットスライドに移し、該上澄み液にマトリックス溶液を加える工程;及び
(h)スライドまたはプレート上の該試験試料を質量分析により解析し、1つ以上の抗酸菌の質量スペクトルを取得し、該試験試料中の前記抗酸菌の特性評価及び/または同定を、測定した1つ以上の質量スペクトルと1つ以上の参照質量スペクトルとの比較によって行う工程。 - 請求項1〜3に記載の方法であり、前記抗酸菌がマイコバクテリアまたはノカルジアである方法。
- 請求項2〜4に記載の方法であり、前記工程(d)の上澄み液を直接、または水懸濁液として、質量分析スライドまたはプレートに塗布する方法。
- 請求項1〜5に記載の方法であり、前記容器が70%エタノールを含む方法。
- 請求項1〜6に記載の方法であり、前記ビーズが0.5 mmガラスビーズである方法。
- 請求項2〜7に記載の方法であり、前記工程(d)のペレットを70%ギ酸に再懸濁する方法。
- 請求項2〜8に記載の方法であり、アセトニトリルを約35%〜約65%の最終濃度になるまで加える方法。
- 請求項1〜9に記載の方法であり、前記工程(b)の容器を約1分〜約30分ビーズ破砕またはボルテックスする工程を更に含む方法。
- 請求項1〜10に記載の方法であり、前記工程(c)の懸濁液を少なくとも約5分間インキュベートする工程を更に含む方法。
- 請求項1〜11に記載の方法であり、前記工程(c)の懸濁液を少なくとも約10分間インキュベートする工程を更に含む方法。
- 請求項2〜12に記載の方法であり、前記工程(e)において、該ペレットを少なくとも3 μLのギ酸に再懸濁する方法。
- 請求項2〜12に記載の方法であり、前記工程(f)において、少なくとも3 μLのアセトニトリルを再懸濁した該ペレットに加える方法。
- 請求項1〜14に記載の方法であり、前記工程(f)の後に、該容器中の試験試料を遠心分離する工程を更に含む方法。
- 請求項3〜15に記載の方法であり、前記工程(g)が、該試験試料のアリコートを質量分析スライドまたはプレートに移し、該アリコートを乾燥させ、続いてマトリックスを加える工程を含む方法。
- 請求項3〜16に記載の方法であり、前記マトリックスがα-シアノ-4-ヒドロキシケイ皮酸(CHCA)である方法。
- 請求項3〜16に記載の方法であり、前記抗酸菌を属、種、及び/または株レベルで同定する方法。
- 試験試料中の抗酸菌の不活性化及び抽出方法であり、以下の連続した工程を含む方法:
(a)試験試料を、抗酸菌の含有が確認されている、または予想される固体または半固体培地から用意し、該試験試料を70%エタノール及び0.5 mmガラスビーズを含む容器中で懸濁する工程;
(b)該容器をビーズ破砕及び/またはボルテックスし、容器中の凝集塊を粉砕する及び/またはマイコバクテリア細胞を粉砕する工程;
(c)その後、該懸濁液を少なくとも約5分間、室温でインキュベートし、該試験試料中に含まれる任意の抗酸菌を不活性化する工程;
(d)該容器を遠心分離にかけ、抗酸菌をペレット状にし、上澄み液を除去する工程;
(e)少なくとも3 μLのギ酸中に該抗酸菌ペレットを再懸濁する工程;
(f)該容器に少なくとも3 μLのアセトニトリルを加える工程;
(g)前記工程(f)の上澄み液のアリコートを質量分析ターゲットスライドに移し、該上澄み液にマトリックス溶液を加える工程;及び
(h)スライドまたはプレート上の試験試料を質量分析により解析し、1つ以上の抗酸菌の質量スペクトルを取得し、前記抗酸菌の特性評価及び/または同定を、測定した質量スペクトルと1つ以上の参照質量スペクトルとの比較によって行う工程。 - 請求項19に記載の方法であり、前記抗酸菌がマイコバクテリアまたはノカルジアである方法。
- 請求項19〜20に記載の方法であり、前記抗酸菌を科、属、種、及び/または株レベルで同定する方法。
- 試験試料中の抗酸菌の不活性化及び抽出方法であり、以下の連続した工程を含む方法:
(a)試験試料を、抗酸菌の含有が確認されている、または予想される液体培地から用意し、該試験試料を容器に加え、該容器を遠心分離にかけ試験試料中の抗酸菌をペレット状にし、その後上澄み液を除去する工程;
(b)該抗酸菌ペレットをエタノールに再懸濁する工程;
(c)該容器にガラスビーズを加える工程;
(d)該容器をビーズ破砕及び/またはボルテックスし、容器中の凝集塊を粉砕する及び/または抗酸菌細胞を粉砕する工程;
(e)その後、該懸濁液を少なくとも約5分間、室温でインキュベートし、該試験試料中に含まれる任意の抗酸菌を不活性化する工程;
(f)該容器を遠心分離にかけ、該不活性化抗酸菌をペレット状にし、その後上澄み液を除去する工程;
(g)ギ酸中に該抗酸菌ペレットを再懸濁する工程;
(h)その後、該容器にアセトニトリルを加える工程;
(i)前記工程(h)の上澄み液のアリコートを質量分析ターゲットスライドに移し、該上澄み液にマトリックス溶液を加える工程;及び
(j)スライドまたはプレート上の試験試料を質量分析により解析し、1つ以上のマイコバクテリアの質量スペクトルを取得し、該試験試料中の前記抗酸菌の特性評価及び/または同定を、測定した1つ以上の質量スペクトルと1つ以上の参照質量スペクトルとの比較によって行う工程。 - 請求項22に記載の方法であり、前記抗酸菌がマイコバクテリアまたはノカルジアである方法。
- 請求項22〜23に記載の方法であり、前記容器が70%エタノールを含む方法。
- 請求項22〜24に記載の方法であり、前記ビーズが0.5 mmガラスビーズである方法。
- 請求項22〜25に記載の方法であり、前記工程(d)のペレットを70%ギ酸に再懸濁する方法。
- 請求項22〜26に記載の方法であり、アセトニトリルを約35%〜約65%の最終濃度になるまで加える方法。
- 請求項22〜27に記載の方法であり、前記工程(b)の該容器を約1分〜約30分ビーズ破砕またはボルテックスする工程を更に含む方法。
- 請求項1に記載の方法であり、前記工程(c)の懸濁液を少なくとも約10分間インキュベートする工程を更に含む方法。
- 請求項22に記載の方法であり、前記抗酸菌を科、属、種、及び/または株レベルで同定する方法。
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CA2872494A1 (en) | 2013-11-21 |
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