JP6549705B2 - 自己蛍光の存在下での、生物的物質内のターゲット蛍光体のイメージング - Google Patents
自己蛍光の存在下での、生物的物質内のターゲット蛍光体のイメージング Download PDFInfo
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Description
本願は、2014年9月29日に提出された米国特許仮出願第62/056830号に関連し、その仮出願の開示は参照により本明細書に組み入れられる。
本発明は蛍光イメージングに関し、特に自己蛍光の存在下での、生物的物質内のターゲット蛍光体のイメージングに関する。
Claims (44)
- 生物的物質内のターゲット蛍光体のイメージを抽出するためのシステムの作動方法であって、前記ターゲット蛍光体の放射の波長帯は前記生物的物質内の第2蛍光体の放射の波長帯と重なり、前記方法は、
第1励起光で前記生物的物質を照らすことで前記第2蛍光体の蛍光および前記ターゲット蛍光体の蛍光の両方から生じる第1蛍光放射を誘起し、かつ、第2励起光で前記生物的物質を照らすことで前記第2蛍光体の前記蛍光のみから生じる第2蛍光放射を誘起することと、
前記第1蛍光放射から第1蛍光イメージを取得し、かつ、前記第2蛍光放射から第2蛍光イメージを取得することと、
前記第1蛍光イメージおよび前記第2蛍光イメージを処理することで、前記ターゲット蛍光体を表す第3蛍光イメージを抽出することと、を含み、
前記第1蛍光イメージおよび前記第2蛍光イメージが取得される前に、前記第1蛍光放射の相対強度と前記第2蛍光放射の相対強度との適切な比が達成されるように、前記第1励起光の相対強度と前記第2励起光の相対強度とが変調される、システムの作動方法。 - 前記相対強度の前記変調は、
前記第1蛍光放射および前記第2蛍光放射における波長領域を特定することであって、前記波長領域では前記蛍光体から生じる放射が前記第1蛍光放射には存在し、かつ、前記第2蛍光放射には存在しない、特定することと、
前記波長領域の外側の波長帯を選択することと、
前記選択された波長帯における、前記第1蛍光放射の相対強度と前記第2蛍光放射の相対強度との比を算出することと、
前記第1励起光の前記相対強度および前記第2励起光の前記相対強度を調整することで、適切な算出比が達成されるまで、前記対応する第1蛍光放射または前記対応する第2蛍光放射もしくはその両方を調整することと、を含む請求項1に記載の方法。 - 前記波長領域の外側の前記波長帯は、前記第1蛍光放射および前記第2蛍光放射から生じる蛍光スペクトルのひとつ以上の波長を含む請求項2に記載の方法。
- 前記第1蛍光放射の相対強度と前記第2蛍光放射の相対強度との前記比を算出することは、前記第1蛍光放射に対応する曲線下面積値を前記第2蛍光放射に対応する曲線下面積値で除すことを含む請求項2または3に記載の方法。
- 前記ターゲット蛍光体がポルフィリンである場合、前記第1励起光は約405nmの波長を有し、かつ、前記第2励起光は約450nmの波長を有する請求項1から4のいずれか一項に記載の方法。
- 前記選択された波長帯は約600nmであり、前記算出比は約1である請求項2から5のいずれか一項に記載の方法。
- 前記第1蛍光イメージおよび前記第2蛍光イメージを処理することで前記ターゲット蛍光体を表す前記第3蛍光イメージを抽出することは、前記第1蛍光イメージから前記第2蛍光イメージを減じることを含む請求項1から6のいずれか一項に記載の方法。
- 前記生物的物質は光脱色により前処理される請求項1から7のいずれか一項に記載の方法。
- 前記ターゲット蛍光体は内因性のものまたは外因性のものもしくはそれらの組み合わせである請求項1から8のいずれか一項に記載の方法。
- 前記内因性蛍光体は、ポルフィリン、ポルフィリン前駆体、ポルフィリン類似物、ポルフィリン派生物、ポルフィリン共役物、ポルフィリンリポソーム、ポルフィリンナノ小胞、またはそれらの組み合わせである請求項9に記載の方法。
- 前記ポルフィリンは、コプロポルフィリン、ウロポルフィリン、プロトポルフィリン、またはそれらの組み合わせを含む請求項10に記載の方法。
- 前記外因性蛍光体は、蛍光色素、蛍光誘導剤、またはそれらの組み合わせである請求項9に記載の方法。
- 組織化学、細胞化学、またはそれらの組み合わせにおける、請求項1から12のいずれか一項に記載の方法の使用。
- 生物的物質内のターゲット蛍光体のイメージを抽出するためのシステムであって、前記ターゲット蛍光体の放射の波長帯は前記生物的物質内の第2蛍光体の放射の波長帯と重なり、前記システムは、
第1励起光で前記生物的物質を照らすことで前記第2蛍光体の蛍光および前記ターゲット蛍光体の蛍光の両方から生じる第1蛍光放射を誘起し、かつ、第2励起光で前記生物的物質を照らすことで前記第2蛍光体の前記蛍光のみから生じる第2蛍光放射を誘起する手段と、
前記第1蛍光放射から第1蛍光イメージを取得し、かつ、前記第2蛍光放射から第2蛍光イメージを取得する手段と、
前記第1蛍光イメージおよび前記第2蛍光イメージの取得の前に、前記第1蛍光放射の相対強度と前記第2蛍光放射の相対強度との適切な比が達成されるように、前記第1励起光の相対強度と前記第2励起光の相対強度とを変調する手段と、
前記第1蛍光イメージおよび前記第2蛍光イメージを処理することで、前記ターゲット蛍光体を表す第3蛍光イメージを抽出する手段と、を備えるシステム。 - 前記相対強度を変調する前記手段は、
前記第1蛍光放射および前記第2蛍光放射における波長領域を特定する手段であって、前記波長領域では前記蛍光体から生じる放射が前記第1蛍光放射には存在し、かつ、前記第2蛍光放射には存在しない、特定する手段と、
前記波長領域の外側の波長帯を選択する手段と、
前記選択された波長帯における、前記第1蛍光放射の相対強度と前記第2蛍光放射の相対強度との比を算出する手段と、
前記第1励起光の前記相対強度および前記第2励起光の前記相対強度を調整することで、適切な算出比が達成されるまで、前記対応する第1蛍光放射または前記対応する第2蛍光放射もしくはその両方を調整する手段と、を含む請求項14に記載のシステム。 - 前記波長領域の外側の前記波長帯は、前記第1蛍光放射および前記第2蛍光放射から生じる蛍光スペクトルのひとつ以上の波長を含む請求項15に記載のシステム。
- 前記第1蛍光放射の相対強度と前記第2蛍光放射の相対強度との前記比を算出する手段は、前記第1蛍光放射に対応する曲線下面積値を前記第2蛍光放射に対応する曲線下面積値で除す手段を含む請求項15または16に記載のシステム。
- 前記ターゲット蛍光体がポルフィリンである場合、前記第1励起光は約405nmの波長を有し、かつ、前記第2励起光は約450nmの波長を有する請求項14から17のいずれか一項に記載のシステム。
- 前記選択された波長帯は約600nmであり、前記算出比は約1である請求項15から18のいずれか一項に記載のシステム。
- 前記第1蛍光イメージおよび前記第2蛍光イメージを処理することで前記ターゲット蛍光体を表す前記第3蛍光イメージを抽出する前記手段は、前記第1蛍光イメージから前記第2蛍光イメージを減じる手段を含む請求項14から19のいずれか一項に記載のシステム。
- 前記照らす手段は蛍光励起源を含む照明モジュールを備え、前記蛍光励起源は前記第1励起光および前記第2励起光を生成するよう構成される請求項14から20のいずれか一項に記載のシステム。
- 前記照明モジュールはさらに、前記照明モジュールを出る前記第1励起光および前記第2励起光を形成し、かつ、導くよう構成された光学要素を含む請求項21に記載のシステム。
- 前記光学要素は、レンズ、光ガイド、ディフューザ、またはそれらの組み合わせを含む請求項22に記載のシステム。
- 前記取得する手段は、イメージセンサを含む蛍光放射取得モジュールを備える請求項14から23のいずれか一項に記載のシステム。
- 前記蛍光放射取得モジュールはさらに、前記イメージセンサの前に設けられた光学要素であって前記第1蛍光放射および前記第2蛍光放射を取得し、フィルタし、導くよう構成された光学要素を含む請求項24に記載のシステム。
- 前記処理する手段は、プロセッサモジュールを含む請求項14から25のいずれか一項に記載のシステム。
- 前記プロセッサモジュールは、前記照らす手段の動作を制御するよう、前記取得する手段の動作を制御するよう、またはそれらの組み合わせを行うよう、構成される請求項26に記載のシステム。
- 前記生物的物質は光脱色により前処理される請求項14から27のいずれか一項に記載のシステム。
- 前記ターゲット蛍光体は内因性のものまたは外因性のものもしくはそれらの組み合わせである請求項14から28のいずれか一項に記載のシステム。
- 前記内因性蛍光体は、ポルフィリン、ポルフィリン前駆体、ポルフィリン類似物、ポルフィリン派生物、ポルフィリン共役物、ポルフィリンリポソーム、ポルフィリンナノ小胞、またはそれらの組み合わせである請求項29に記載のシステム。
- 前記ポルフィリンは、コプロポルフィリン、ウロポルフィリン、プロトポルフィリン、またはそれらの組み合わせを含む請求項30に記載のシステム。
- 前記外因性蛍光体は、蛍光色素、蛍光誘導剤、またはそれらの組み合わせである請求項29に記載のシステム。
- 前記生物的物質は、生物組織、生物流体、またはそれらの一部を含む、請求項1から12のいずれか一項に記載の方法。
- 前記生物的物質は、生物組織、生物流体、またはそれらの一部を含む請求項13に記載の使用。
- 前記生物的物質は、生物組織、生物流体、またはそれらの一部を含む請求項14から32のいずれか一項に記載のシステム。
- 前記生物的物質は、ほ乳類から導かれるかほ乳類に存在する器官、細胞、細胞株、細胞構成物を含む、請求項1から12のいずれか一項に記載の方法。
- 前記生物的物質は、ほ乳類から導かれるかほ乳類に存在する器官、細胞、細胞株、細胞構成物を含む請求項13に記載の使用。
- 前記生物的物質は、ほ乳類から導かれるかほ乳類に存在する器官、細胞、細胞株、細胞構成物を含む請求項14から32のいずれか一項に記載のシステム。
- 前記生物的物質は、健康な組織、病的組織、または悪性組織を含む、請求項1から12のいずれか一項に記載の方法。
- 前記生物的物質は、健康な組織、病的組織、または悪性組織を含む請求項13に記載の使用。
- 前記生物的物質は、健康な組織、病的組織、または悪性組織を含む請求項14から32のいずれか一項に記載のシステム。
- 前記生物的物質は、組織化学、免疫組織化学、細胞化学、免疫蛍光法、免疫ブロット法、または蛍光関連イメージング応用で用いられる組織部分を含む、請求項1から12のいずれか一項に記載の方法。
- 前記生物的物質は、組織化学、免疫組織化学、細胞化学、免疫蛍光法、免疫ブロット法、または蛍光関連イメージング応用で用いられる組織部分を含む請求項13に記載の使用。
- 前記生物的物質は、組織化学、免疫組織化学、細胞化学、免疫蛍光法、免疫ブロット法、または蛍光関連イメージング応用で用いられる組織部分を含む請求項14から32のいずれか一項に記載のシステム。
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| PCT/CA2015/050973 WO2016049756A1 (en) | 2014-09-29 | 2015-09-28 | Imaging a target fluorophore in a biological material in the presence of autofluorescence |
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| JP2017533415A (ja) | 2017-11-09 |
| EP3201607A1 (en) | 2017-08-09 |
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| CN107209118A (zh) | 2017-09-26 |
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| HK1244873A1 (zh) | 2018-08-17 |
| KR102068776B1 (ko) | 2020-01-21 |
| CA2963987A1 (en) | 2016-04-07 |
| US20180120230A1 (en) | 2018-05-03 |
| EP3201607A4 (en) | 2018-08-15 |
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| AU2015327665A1 (en) | 2017-04-13 |
| CN107209118B (zh) | 2021-05-28 |
| US10488340B2 (en) | 2019-11-26 |
| US20160110870A1 (en) | 2016-04-21 |
| EP3201607B1 (en) | 2020-12-30 |
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