JP2020516692A - 血漿中の蛍光化合物を調製及び分析する方法 - Google Patents
血漿中の蛍光化合物を調製及び分析する方法 Download PDFInfo
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- JP2020516692A JP2020516692A JP2020506139A JP2020506139A JP2020516692A JP 2020516692 A JP2020516692 A JP 2020516692A JP 2020506139 A JP2020506139 A JP 2020506139A JP 2020506139 A JP2020506139 A JP 2020506139A JP 2020516692 A JP2020516692 A JP 2020516692A
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Abstract
Description
本出願は、2017年11月20日出願の米国特許仮出願第62/588、606号に基づく優先権を主張するものである。上記出願の開示内容は、参照により本明細書中に援用される。
本発明の分野は、一般的に、血漿中の蛍光化合物の検出及び定量化に関する。より詳細には、本出願は、患者の血漿中の(2R、2´R)−2、2´−((3、6−ジアミノピラジン−2、5−ジカルボニル)ビス(アザンジイル))ビス(3−ヒドロキシプロパン酸)を分析及び定量化するための方法に関する。
X1及びX2は、互いに独立して、-CO2R1、−CONR1R2、−CO(AA)、及び−CONH(PS)からなる群から選択され、
Y1及びY2は、互いに独立して、NR1R2、及び
Z1は、単結合、−CR1R2−、−O−、−NR1−、−NCOR1−、−S−、−SO−、及び−SO2−からなる群から選択され、
R1及びR2は、互いに独立して、H、−CH2(CHOH)aH、−CH2(CHOH)aCH3、−CH2(CHOH)aCO2H、−(CHCO2H)aCO2H、−(CH2CH2O)cH、−(CH2CH2O)cCH3、−(CH2)aSO3H、−(CH2)aSO3 −、−(CH2)aSO2H、−(CH2)aSO2 −、−(CH2)aNHSO3H、−(CH2)aNHSO3 −、−(CH2)aNHSO2H、−(CH2)aNHSO2 −、−(CH2)aPO4H3、−(CH2)aPO4H2 −、−(CH2)aPO4H2−、−(CH2)aPO4 3−、−(CH2)aPO3H2、−(CH2)aPO3H−、及び−(CH2)aPO3 2−からなる群から選択され、
AAは、ペプチド結合またはアミド結合によって互いに結合された1以上の天然または非天然のアミノ酸を含むポリペプチド鎖であり、AAの各々は、互いに同一であってもよいし異なっていてもよく、
PSは、グリコシド結合によって互いに結合された1以上の単糖単位を含む硫化多糖鎖または非硫化多糖鎖であり、
aは、1〜10の範囲の数であり、
cは、1〜100の範囲の数であり、
m及びnは、互いに独立して、1〜3の範囲の数である。
Z1は、単結合、−CR1R2−、−O−、−NR1−、−NCOR1−、−S−、−SO−、及び−SO2−からなる群から選択され、
R1及びR2は、互いに独立して、H、−CH2(CHOH)aH、−CH2(CHOH)aCH3、−CH2(CHOH)aCO2H、−(CHCO2H)aCO2H、−(CH2CH2O)cH、−(CH2CH2O)cCH3、−(CH2)aSO3H、−(CH2)aSO3 −、−(CH2)aSO2H、−(CH2)aSO2 −、−(CH2)aNHSO3H、−(CH2)aNHSO3 −、−(CH2)aNHSO2H、−(CH2)aNHSO2 −、−(CH2)aPO4H3、−(CH2)aPO4H2 −、−(CH2)aPO4H2−、−(CH2)aPO4 3−、−(CH2)aPO3H2、−(CH2)aPO3H−、及び−(CH2)aPO3 2−からなる群から選択され、a、c、m及びnは、上述した通りである。
Claims (20)
- 血漿中の蛍光化合物の量を測定する方法であって、
血漿試料を収集するステップと、
前記血漿試料を少なくとも1つの溶媒で希釈するステップと、
希釈した前記血漿試料を高速液体クロマトグラフィ(HPLC)で分析して、前記血漿中の前記蛍光化合物の量を測定するステップと、を含み、
前記血漿試料はHPLC分析前に乾燥させられておらず、前記血漿試料に内部標準物質が添加されていないことを特徴とする方法。 - 請求項1に記載の方法であって、
前記蛍光化合物は、下記の化学式Iで表される化合物、またはその薬学的に許容される塩であることを特徴とする方法。
X1及びX2は、互いに独立して、-CO2R1、−CONR1R2、−CO(AA)、及び−CONH(PS)からなる群から選択され、
Y1及びY2は、互いに独立して、NR1R2、及び
Z1は、単結合、−CR1R2−、−O−、−NR1−、−NCOR1−、−S−、−SO−、及び−SO2−からなる群から選択され、
R1及びR2は、互いに独立して、H、−CH2(CHOH)aH、−CH2(CHOH)aCH3、−CH2(CHOH)aCO2H、−(CHCO2H)aCO2H、−(CH2CH2O)cH、−(CH2CH2O)cCH3、−(CH2)aSO3H、−(CH2)aSO3 −、−(CH2)aSO2H、−(CH2)aSO2 −、−(CH2)aNHSO3H、−(CH2)aNHSO3 −、−(CH2)aNHSO2H、−(CH2)aNHSO2 −、−(CH2)aPO4H3、−(CH2)aPO4H2 −、−(CH2)aPO4H2−、−(CH2)aPO4 3−、−(CH2)aPO3H2、−(CH2)aPO3H−、及び−(CH2)aPO3 2−からなる群から選択され、
AAは、ペプチド結合またはアミド結合によって互いに結合された1以上の天然または非天然のアミノ酸を含むポリペプチド鎖であり、AAの各々は、互いに同一であってもよいし異なっていてもよく、
PSは、グリコシド結合によって互いに結合された1以上の単糖単位を含む硫化多糖鎖または非硫化多糖鎖であり、
aは、1〜10の範囲の数であり、
cは、1〜100の範囲の数であり、
m及びnは、互いに独立して、1〜3の範囲の数である。 - 請求項1に記載の方法であって、
前記少なくとも1つの溶媒は、水性溶媒、非水性溶媒、及びそれらの任意の組み合わせからなる群から選択されることを特徴とする方法。 - 請求項4に記載の方法であって、
前記少なくとも1つの溶媒は、リン酸緩衝生理食塩水(PBS)であることを特徴とする方法。 - 請求項1に記載の方法であって、
前記血漿試料は、血液溶血の徴候を示すことを特徴とする方法。 - 血漿中の蛍光化合物の量を測定する方法であって、
血漿試料を収集するステップと、
前記血漿試料に少なくとも1つの溶媒を加えて、血漿タンパク質を沈殿させるステップと、
沈殿した前記血漿タンパク質を前記血漿試料から除去するステップと、
前記血漿試料を高速液体クロマトグラフィ(HPLC)で分析して、前記血漿中の前記蛍光化合物の量を測定するステップと、を含み、
前記血漿試料はHPLC分析前に乾燥させられておらず、前記血漿試料に内部標準物質が添加されていないことを特徴とする方法。 - 請求項7に記載の方法であって、
沈殿した前記血漿タンパク質を前記血漿試料から除去する前記ステップは、
前記血漿試料を遠心分離するステップを含み、
遠心分離された前記血漿試料は、上清及び沈殿物を含み、
前記上清は、前記HPLC分析前に、少なくとも1つの溶媒で希釈されることを特徴とする方法。 - 請求項7に記載の方法であって、
前記少なくとも1つの溶媒は、メタノール、リン酸緩衝生理食塩水(PBS)、及びそれらの任意の組み合わせからなる群より選択されることを特徴とする方法。 - 請求項7に記載の方法であって、
前記蛍光化合物は、下記の化学式Iで表される化合物、またはその薬学的に許容される塩であることを特徴とする方法。
X1及びX2は、互いに独立して、-CO2R1、−CONR1R2、−CO(AA)、及び−CONH(PS)からなる群から選択され、
Y1及びY2は、互いに独立して、NR1R2、及び
Z1は、単結合、−CR1R2−、−O−、−NR1−、−NCOR1−、−S−、−SO−、及び−SO2−からなる群から選択され、
R1及びR2は、互いに独立して、H、−CH2(CHOH)aH、−CH2(CHOH)aCH3、−CH2(CHOH)aCO2H、−(CHCO2H)aCO2H、−(CH2CH2O)cH、−(CH2CH2O)cCH3、−(CH2)aSO3H、−(CH2)aSO3 −、−(CH2)aSO2H、−(CH2)aSO2 −、−(CH2)aNHSO3H、−(CH2)aNHSO3 −、−(CH2)aNHSO2H、−(CH2)aNHSO2 −、−(CH2)aPO4H3、−(CH2)aPO4H2 −、−(CH2)aPO4H2−、−(CH2)aPO4 3−、−(CH2)aPO3H2、−(CH2)aPO3H−、及び−(CH2)aPO3 2−からなる群から選択され、
AAは、ペプチド結合またはアミド結合によって互いに結合された1以上の天然または非天然のアミノ酸を含むポリペプチド鎖であり、AAの各々は、互いに同一であってもよいし異なっていてもよく、
PSは、グリコシド結合によって互いに結合された1以上の単糖単位を含む硫化多糖鎖または非硫化多糖鎖であり、
aは、1〜10の範囲の数であり、
cは、1〜100の範囲の数であり、
m及びnは、互いに独立して、1〜3の範囲の数である。 - 請求項7に記載の方法であって、
前記少なくとも1つの溶媒は、水性溶媒、非水性溶媒、及びそれらの任意の組み合わせからなる群から選択されることを特徴とする方法。 - 請求項12に記載の方法であって、
前記水性溶媒はリン酸緩衝食塩水であり、前記非水性溶媒はメタノールであることを特徴とする方法。 - 請求項7に記載の方法であって、
前記血漿試料は、血液溶血の徴候を示すことを特徴とする方法。 - 請求項1に記載の方法であって、
前記血漿は、ヒト、動物、またはインビトロ実験系に由来することを特徴とする方法。 - 請求項1に記載の方法であって、
前記溶媒は、リン酸、酢酸、重炭酸、炭酸、ギ酸、グルコン酸、乳酸、クエン酸、スルホン酸、アンモニウム、グアニジニウム、HEPES、カコジル酸、トリス、トリス−HCl、マレイン酸、ホウ酸、グリシネート、コハク酸、PIPES、及びこれらの任意の組合せからなる群より選択される水性緩衝液であることを特徴とする方法。 - 請求項1に記載の方法であって、
前記溶媒は、メタノール、エタノール、エチレングリコール、酢酸エチル、ヘキサン、クロロホルム、DMF、DMSO、酢酸、アセトン、アセトニトリル、ブタノール、四塩化炭素、ジエチレングリコール、ジエチルエーテル、DME、エチレングリコール、塩化メチレン、ニトロメタン、石油エーテル、プロパノール、ピリジン、トルエン、MTBE、トリエチルアミン、キシレン、及びベンゼンからなる群より選択される非水性溶媒であることを特徴とする方法。 - 請求項7に記載の方法であって、
前記血漿は、ヒト、動物、またはインビトロ実験系に由来することを特徴とする方法。 - 請求項7に記載の方法であって、
前記溶媒は、リン酸、酢酸、重炭酸、炭酸、ギ酸、グルコン酸、乳酸、クエン酸、スルホン酸、アンモニウム、グアニジニウム、HEPES、カコジル酸、トリス、トリス−HCl、マレイン酸、ホウ酸、グリシネート、コハク酸、PIPES、及びこれらの任意の組合せからなる群より選択される水性緩衝液であることを特徴とする方法。 - 請求項7に記載の方法であって、
前記溶媒は、メタノール、エタノール、エチレングリコール、酢酸エチル、ヘキサン、クロロホルム、DMF、DMSO、酢酸、アセトン、アセトニトリル、ブタノール、四塩化炭素、ジエチレングリコール、ジエチルエーテル、DME、エチレングリコール、塩化メチレン、ニトロメタン、石油エーテル、プロパノール、ピリジン、トルエン、MTBE、トリエチルアミン、キシレン、及びベンゼンからなる群より選択される非水性溶媒であることを特徴とする方法。
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