JP2006501978A - リボフラビンおよび光を使用する核酸破壊方法 - Google Patents
リボフラビンおよび光を使用する核酸破壊方法 Download PDFInfo
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- JP2006501978A JP2006501978A JP2005501781A JP2005501781A JP2006501978A JP 2006501978 A JP2006501978 A JP 2006501978A JP 2005501781 A JP2005501781 A JP 2005501781A JP 2005501781 A JP2005501781 A JP 2005501781A JP 2006501978 A JP2006501978 A JP 2006501978A
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- liquid
- riboflavin
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- blood
- pathogen
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Images
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- A61L2/0082—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor for pharmaceuticals, biologicals or living parts using chemical substances
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- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K41/00—Medicinal preparations obtained by treating materials with wave energy or particle radiation ; Therapies using these preparations
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Abstract
Description
et al.(1981), "Alteration of Guanine Residues during Proflavine Mediated Photosensitization of DNA, "Photochemistry and Photobiology 33:325-333.で議論されている。
赤血球または血小板の溶液中に含まれる可能性がある白血球の核酸に損傷を与え、かつ損傷を維持するイソアロキサジン(リボフラビン)光増感剤および光の効果を決定するために、Jurkat細胞(モデルT-リンパ球細胞株)を、赤血球または血小板を含む溶液中にスパイクした。Jurkat細胞を、RPMI細胞増殖培地37℃、5%CO2中で最初に増殖させた。
図3aおよび3bは、処理されかつ制御のJurkat細胞の酸素消費を示すグラフである。酸素消費は細胞生存能力の指標である。健康な細胞は呼吸して酸素を消費するが、不健康なおよび/または死んだ細胞は酸素を消費しない。BD酸素バイオセンサシステムを使用してJurkat細胞の代謝を処理後4日間にわたりモニターした。酸素は、大気から細胞培地中に拡散する。酸素の存在は、細胞が増殖するウェルの底に位置する蛍光マーカーを消光させる。細胞によって消費された酸素の量は、生み出される蛍光の量によって測定される。酸素が呼吸のために健康な細胞によって使用される場所では、蛍光が生み出される。
図4は、リボフラビンおよび可視光または紫外光での処理後の2日間にわたるJurkat細胞のDNAの断片化を示す。Jurkat細胞のDNA中の鎖の切断を、リボフラビン(この図中Rfで表記)および光での処理後にフローサイトメトリーによって測定した。%ポジティブは、ポジティブなDNA損傷を示す。表に示すように、1日目、UV光単独で細胞の85.5%がDNA損傷を引き起こした。しかしながら、2日目には、UV光単独にさらされた細胞のたった0.4%のみがDNAの損傷を示した。図4に示すように、UV光単独での細胞の曝露は、DNA損傷を長時間維持しない。1つの仮説は、UV光単独でさらされた細胞は損傷を修復するということである。他の仮説は、UV単独は新しい健康な細胞の増殖を妨げないということである。
リボフラビンおよび光の細菌DNA殺傷についての効果を測定するために、大腸菌を90%血漿中にスパイクした。リボフラビンを50μMの最終濃度で添加し、混合物を0 J/cm2, 10 J/cm2, 17 J/cm2 および 20 J/cm2の強度範囲で光にさらした。光曝露後、細菌のゲノムDNAを標準DNA精製技術を使用して精製し、DNA断片を標準アガロースゲル電気泳動によって分析し、DNA断片を標準イメージング技術を使用して定量化した。
本研究は、リボフラビンおよび320nmの広帯域UVB光が、ウイルスのDNAに対して修復不可能な損傷を引き起こすかどうかを決定するために行われた。
Claims (23)
- 病原体および血液成分を含む液体中で病原体の核酸に対する損傷を実質的に維持する方法であって:
リボフラビンを含む光増感剤を液体に添加する工程と;
病原体の核酸に損傷を引き起こさせるように、光増感剤を活性化させる適切な波長の光で液体および光増感剤を照射する工程と;
病原体の核酸に対する損傷を実質的に維持する工程とを含んでなり;
光増感剤および光によって引き起こされる病原体の核酸に対する損傷が、照射後の液体の貯蔵中で実質的に維持される方法。 - レシピエントへの輸液後に病原体の核酸に対する損傷を実質的に維持することをさらに含む請求項1の方法。
- 病原体の核酸が、望ましくない細胞および/または微生物からの核酸をさらに含む請求項1の方法。
- 失活剤を液体に添加することをさらに含む請求項1の方法。
- 失活剤が、本質的にグルタチオン、n-アセチル-システイン、システイン、アデニン、ヒスチジン、チロシン、トリプトファン、アスコルベート、ビタミンE、トロロクス、TPGSおよびそれらの混合物からなる群から選択される失活剤をさらに含む請求項4の方法。
- 血液成分の生存能力を増強させる添加剤を含む溶液を液体に添加することをさらに含む請求項1の方法。
- 血液成分が血小板をさらに含む請求項1の方法。
- 血液成分が赤血球をさらに含む請求項1の方法。
- 液体および光増感剤を照射するのに使用される光がUVB範囲にある請求項1の方法。
- リボフラビンが約50〜500μMの最終濃度で液体に添加される請求項1の方法。
- 液体中に含まれる白血球を不活性化させる方法であって:
白血球を含む液体に有効量のリボフラビンを添加することと;
リボフラビンを活性化しかつ白血球の核酸に損傷を引き起こすのに適切な波長の光に液体およびリボフラビンをさらすことと;
白血球の再活性化を妨げるように、白血球の核酸に対する損傷を実質的に維持することとを含んでなる方法。 - 液体が赤血球をさらに含む請求項11の方法。
- 液体が血小板をさらに含む請求項11の方法。
- 液体が血漿をさらに含む請求項11の方法。
- 液体およびリボフラビンをさらす光がUVB範囲にある請求項11の方法。
- リボフラビンが約50〜500μMの最終濃度で液体に添加される請求項11の方法。
- 患者への輸液に適した液体であって、請求項11の方法によって処理された赤血球を含む液体。
- 患者への輸液に適した液体であって、請求項11の方法によって処理された血小板を含む液体。
- 患者への輸液に適した液体であって、請求項11の方法によって処理された血漿を含む液体。
- 患者に輸液される血液製剤中に含まれるウイルスを不活性化させる方法であって:
ウイルスを含む血液製剤に有効量のリボフラビンを添加することと;
リボフラビンを活性化しかつウイルスの核酸に損傷を引き起こすのに適切な波長の光に血液製剤およびリボフラビンをさらすことと;
病原体の減少した血液製剤の患者への爾後の輸液を可能にさせるように、ウイルスの核酸に対する損傷を実質的に維持することとを含んでなる方法。 - 患者への再輸液に適した血液または血液成分を含む病原体の減少した液体を提供する方法であって:
血液または血液成分とともに存在する可能性がある任意の病原体の核酸を損傷させることと;
血液または血液成分および何等かの病原体を含む液体にリボフラビンを添加することと;
病原体の核酸の損傷を維持するように、リボフラビンを活性化する光に液体をさらすこととを含んでなる方法。 - 液体を光にさらす工程が、液体をUVB範囲にある光にさらすことをさらに含む請求項21の方法。
- リボフラビンが約50〜500μMの最終濃度で液体に添加される請求項21の方法。
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US31948802P | 2002-08-23 | 2002-08-23 | |
US31964102P | 2002-10-22 | 2002-10-22 | |
US10/377,524 US20030215784A1 (en) | 1998-07-21 | 2003-02-28 | Method and apparatus for inactivation of biological contaminants using photosensitizers |
PCT/US2003/026770 WO2004018471A1 (en) | 2002-08-23 | 2003-08-25 | Nucleic acid damage using riboflavin and light |
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JP2009524672A (ja) * | 2006-01-27 | 2009-07-02 | カリディアンビーシーティ バイオテクノロジーズ,エルエルシー | 高濃度アロキサジン溶液の製造のための方法及び組成物 |
JP2021508539A (ja) * | 2017-12-29 | 2021-03-11 | シーラス コーポレイション | 生物学的流体を処理するためのシステムおよび方法 |
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AU2012233032B2 (en) * | 2006-01-27 | 2015-07-16 | Terumo Bct Biotechnologies, Llc | Methods and compositions for the production of high concentration alloxazine solutions |
AU2008282232A1 (en) * | 2007-08-01 | 2009-02-05 | Terumo Bct Biotechnologies, Llc. | Pathogen inactivation of whole blood |
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WO2000004930A2 (en) * | 1998-07-21 | 2000-02-03 | Gambro, Inc. | Method for inactivation of microorganisms using photosensitizers |
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US6268120B1 (en) * | 1999-10-19 | 2001-07-31 | Gambro, Inc. | Isoalloxazine derivatives to neutralize biological contaminants |
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JP2009524672A (ja) * | 2006-01-27 | 2009-07-02 | カリディアンビーシーティ バイオテクノロジーズ,エルエルシー | 高濃度アロキサジン溶液の製造のための方法及び組成物 |
JP2021508539A (ja) * | 2017-12-29 | 2021-03-11 | シーラス コーポレイション | 生物学的流体を処理するためのシステムおよび方法 |
JP7311518B2 (ja) | 2017-12-29 | 2023-07-19 | シーラス コーポレイション | 生物学的流体を処理するためのシステムおよび方法 |
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