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    • 1. 发明授权
    • Photo-triggered release of active substances from dendrimer-photosensitizer complexes
    • 从树枝状大分子光敏剂复合物照片触发释放活性物质
    • US08153111B2
    • 2012-04-10
    • US10871676
    • 2004-06-18
    • Volker AlbrechtArno WieheBeate RoederWolfgang Neuberger
    • Volker AlbrechtArno WieheBeate RoederWolfgang Neuberger
    • A61K31/00A61K9/00
    • A61K31/785A61K41/00A61K47/59A61K47/595Y10S424/16A61K2300/00
    • Compositions of dendrimer-photosensitizer complexes including therapeutic molecules, and methods for their synthesis and use are disclosed. The therapeutic molecules and the photosensitizers are each covalently attached to the dendrimer at its end-groups, essentially randomly. Upon exposure to radiation of a suitable wavelength, the photosensitizers are activated to break up the dendrimer structure and thus release the therapeutic molecules. In a preferred embodiment, the end-groups of the dendrimer are replaced with or covalently connected to therapeutic molecules and photosensitizers. In a further preferred embodiment, targeting molecules may also be attached to the dendrimer to create a more accurate treatment. The present invention is especially useful for medical applications, where therapeutic molecules can be delivered to body areas for treatment of a variety of diseases without risk of premature release in the body, due to the strength and stability of the bonds between the end-groups and the photosensitizers and therapeutic molecules.
    • 公开了包括治疗分子的树枝状大分子光敏剂复合物的组合物及其合成和使用的方法。 治疗分子和光敏剂在其端基基本上随机共价连接到树枝状大分子。 在暴露于合适波长的辐射下,激活光敏剂以分解树枝状聚合物结构,从而释放治疗分子。 在优选的实施方案中,树枝状大分子的端基被治疗分子和光敏剂替代或共价连接。 在另一个优选的实施方案中,靶向分子也可以连接到树枝状大分子以产生更准确的处理。 本发明特别适用于医疗应用,其中治疗分子可以递送到身体区域以治疗各种疾病,而不会在体内过早释放的风险,这是由于端基之间的键的强度和稳定性 光敏剂和治疗分子。
    • 2. 发明申请
    • Photo-triggered release of active substances from dendrimer-photosensitizer complexes
    • 从树枝状大分子光敏剂复合物照片触发释放活性物质
    • US20050281777A1
    • 2005-12-22
    • US10871676
    • 2004-06-18
    • Volker AlbrechtArno WieheBeate RoederWolfgang Neuberger
    • Volker AlbrechtArno WieheBeate RoederWolfgang Neuberger
    • A61K31/785A61K41/00A61K47/48
    • A61K31/785A61K41/00A61K47/59A61K47/595Y10S424/16A61K2300/00
    • Compositions of dendrimer-photosensitizer complexes including therapeutic molecules, and methods for their synthesis and use are disclosed. The therapeutic molecules and the photosensitizers are each covalently attached to the dendrimer at its end-groups, essentially randomly. Upon exposure to radiation of a suitable wavelength, the photosensitizers are activated to break up the dendrimer structure and thus release the therapeutic molecules. In a preferred embodiment, the end-groups of the dendrimer are replaced with or covalently connected to therapeutic molecules and photosensitizers. In a further preferred embodiment, targeting molecules may also be attached to the dendrimer to create a more accurate treatment. The present invention is especially useful for medical applications, where therapeutic molecules can be delivered to body areas for treatment of a variety of diseases without risk of premature release in the body, due to the strength and stability of the bonds between the end-groups and the photosensitizers and therapeutic molecules.
    • 公开了包括治疗分子的树枝状大分子光敏剂复合物的组合物及其合成和使用的方法。 治疗分子和光敏剂在其端基基本上随机共价连接到树枝状大分子。 在暴露于合适波长的辐射下,激活光敏剂以分解树枝状聚合物结构,从而释放治疗分子。 在优选的实施方案中,树枝状大分子的端基被治疗分子和光敏剂替代或共价连接。 在另一个优选的实施方案中,靶向分子也可以连接到树枝状大分子以产生更准确的处理。 本发明特别适用于医疗应用,其中治疗分子可以递送到身体区域以治疗各种疾病,而不会在体内过早释放的风险,这是由于端基之间的键的强度和稳定性 光敏剂和治疗分子。
    • 4. 发明授权
    • Method and application of unsymmetrically meso-substituted porphyrins and chlorins for PDT
    • 用于PDT的不对称内消旋卟啉和二氢卟酚的方法和应用
    • US09315510B2
    • 2016-04-19
    • US13119907
    • 2009-09-17
    • Arno WieheDaniel AicherChristian B. W. StarkVolker AlbrechtSusanna Gräfe
    • Arno WieheDaniel AicherChristian B. W. StarkVolker AlbrechtSusanna Gräfe
    • A61K31/409C07D487/22C07H15/26
    • C07D487/22C07H15/26
    • Biologically active compounds are provided that can be used as photosensitizers for diagnostic and therapeutic applications, particularly for PDT of cancer, infections and other hyperproliferative diseases, fluorescence diagnosis and PDT treatment of a non-tumorous indication such as arthritis, inflammatory diseases, viral or bacterial infections, dermatological, ophthalmological or urological disorders as well as providing methods to obtain them in pharmaceutical quality. One embodiment consists of a method to synthesize a porphyrin with a defined arrangement of meso-substituents and then converting this porphyrin system to a chlorin system by dihydroxylation or reduction, and if more than one isomer is formed separate them by chromatography either on normal or reversed phase silica. In another embodiment the substituents on the porphyrin are selected to direct the reduction or dihydroxylation to the chlorin so that a certain isomer is selectively formed. Another embodiment is to provide amphiphilic compounds with a higher membrane affinity and increased PDT-efficacy. In another embodiment a method to reductively cleave the osmate(VI)ester avoiding the use of gaseous H2S is provided. In another embodiment substituents are identified that via their steric and/or electronic influence direct the dihydroxylation or reduction with diimine so that one isomer is favored. Another embodiment consists of formulate the desired isomer into a liposomal formulation to be injected avoiding undesirable effects like solubility problems or delayed pharmacokinetics of the tetrapyrrole systems.
    • 提供了可用作诊断和治疗应用的光敏剂的生物活性化合物,特别是用于癌症,感染和其它过度增生性疾病的PDT,荧光诊断和PDT治疗非肿瘤适应症如关节炎,炎性疾病,病毒或细菌 感染,皮肤病学,眼科学或泌尿系统疾病,以及提供以药物质量获得它们的方法。 一个实施方案由合成具有定义的内消旋取代基排列的卟啉的方法组成,然后通过二羟基化或还原将该卟啉体系转化为二氢卟酚体系,并且如果形成多于一种的异构体,则通过色谱法分离,或者在正常或反向 相二氧化硅。 在另一个实施方案中,选择卟啉上的取代基以指导还原或二羟基化为二氢卟酚,从而选择性地形成某种异构体。 另一个实施方案是提供具有更高膜亲和力和增加的PDT功效的两亲化合物。 在另一个实施方案中,提供了避免使用气态H 2 S的还原性裂解锇酸酯(VI)酯的方法。 在另一个实施方案中,鉴定了取代基,通过它们的空间和/或电子影响直接使二羟基化或还原与二亚胺,使得一种异构体是有利的。 另一个实施方案包括将所需的异构体配制成待注射的脂质体制剂,避免不期望的作用,如四吡咯体系的溶解性问题或延迟的药代动力学。
    • 8. 发明授权
    • Calciumphosphate-based nanoparticles as carrier-systems for photodynamic therapy
    • 基于磷酸钙的纳米粒子作为光动力疗法的载体系统
    • US08956648B2
    • 2015-02-17
    • US13140855
    • 2009-12-18
    • Burkhard GitterSusanna GräfeArno WieheVolker AlbrechtMatthias EppleJanine SchwiertzKathirvel Ganesan
    • Burkhard GitterSusanna GräfeArno WieheVolker AlbrechtMatthias EppleJanine SchwiertzKathirvel Ganesan
    • A61P35/00A61P31/04A61K9/14A61K31/5415B82Y5/00A61K9/51A61K41/00A61K49/00
    • A61K9/5115A61K41/0057A61K41/0071A61K49/0093Y10S977/773
    • The present invention provides pharmaceutical photosensitizer-loaded nanoparticle formulations and their methods of preparation for photodynamic therapy, comprising a hydrophobic or hydrophilic photosensitizer, nanoparticulate calcium phosphate and in certain cases auxiliary reagents such as stabilizers. The calcium phosphate-based nanoparticle formulations of the present invention provide excellent storage stability and therapeutically effective amounts of photosensitizer for intravenous or topical administration. In a preferred embodiment, tetrapyrrole derivatives such as porphyrins, chlorins and bacteriochlorins, are the preferred hydrophobic photosensitizers to be formulated in calcium phosphate nanoparticle formulations for photodynamic tumor therapy. Additionally, 5,10,15,20-tetrakis(4-phosphonooxyphenyl)porphine (pTPPP) is a preferred hydrophilic photosensitizer for photodynamic tumor therapy. In another preferred embodiment, hydrophilic cationic and anionic photosensitizers, especially those of the phenazinium, phenothiazinium and xanthenes series have been found to inactive pathogen bacteria and are the preferred photosensitizers to be formulated in calcium phosphate nanoparticle formulations for antibacterial photodynamic therapy. In another embodiment, photosensitizing nanoparticle formulations are useful to locate cells, tissues or bacteria by using fluorescence imaging methods.
    • 本发明提供负载药物的光敏剂纳米颗粒制剂及其制备光动力疗法的方法,其包括疏水或亲水性光敏剂,纳米颗粒磷酸钙,在某些情况下,辅助试剂如稳定剂。 本发明的基于磷酸钙的纳米颗粒制剂提供优异的储存稳定性和用于静脉内或局部给药的治疗有效量的光敏剂。 在优选的实施方案中,四吡咯衍生物如卟啉,二氢卟酚和细菌二氢卟酚是拟配制在用于光动力学肿瘤治疗的磷酸钙纳米颗粒制剂中的优选的疏水性光敏剂。 另外,5,10,15,20-四(4-膦酰氧基苯基)卟吩(pTPPP)是用于光动力学肿瘤治疗的优选亲水性光敏剂。 在另一个优选的实施方案中,已经发现亲水性阳离子和阴离子光敏剂,特别是吩嗪鎓,吩噻嗪和呫吨系列的亲水性阳离子和阴离子光敏剂是无活性的病原体细菌,并且是配制在用于抗菌光动力学治疗的磷酸钙纳米颗粒制剂中的优选的光敏剂。 在另一个实施方案中,光敏纳米颗粒制剂可用于通过使用荧光成像方法定位细胞,组织或细菌。
    • 9. 发明申请
    • CALCIUMPHOSPHATE-BASED NANOPARTICLES AS CARRIER-SYSTEMS FOR PHOTODYNAMIC THERAPY
    • 基于钙磷酸盐的纳米颗粒作为光化学治疗的载体系统
    • US20110257586A1
    • 2011-10-20
    • US13140855
    • 2009-12-18
    • Burkhatd GitterSusanna GrafeArno WieheVolker AlbrechtMatthias EppleJanine SchwiertzKathirvel Ganesan
    • Burkhatd GitterSusanna GrafeArno WieheVolker AlbrechtMatthias EppleJanine SchwiertzKathirvel Ganesan
    • A61M37/00A61K31/409A61K31/675A61P35/00A61P31/04A61K9/14A61K31/5415B82Y5/00
    • A61K9/5115A61K41/0057A61K41/0071A61K49/0093Y10S977/773
    • The present invention provides pharmaceutical photosensitizer-loaded nanoparticle formulations and their methods of preparation for photodynamic therapy, comprising a hydrophobic or hydrophilic photosensitizer, nanoparticulate calcium phosphate and in certain cases auxiliary reagents such as stabilizers. The calcium phosphate-based nanoparticle formulations of the present invention provide excellent storage stability and therapeutically effective amounts of photosensitizer for intravenous or topical administration. In a preferred embodiment, tetrapyrrole derivatives such as porphyrins, chlorins and bacteriochlorins, are the preferred hydrophobic photosensitizers to be formulated in calcium phosphate nanoparticle formulations for photodynamic tumor therapy. Additionally, 5,10,15,20-tetrakis(4-phosphonooxyphenyl)porphine (pTPPP) is a preferred hydrophilic photosensitizer for photodynamic tumor therapy. In another preferred embodiment, hydrophilic cationic and anionic photosensitizers, especially those of the phenazinium, phenothiazinium and xanthenes series have been found to inactive pathogen bacteria and are the preferred photosensitizers to be formulated in calcium phosphate nanoparticle formulations for antibacterial photodynamic therapy. In another embodiment, photosensitizing nanoparticle formulations are useful to locate cells, tissues or bacteria by using fluorescence imaging methods.
    • 本发明提供负载药物的光敏剂纳米颗粒制剂及其制备光动力疗法的方法,其包括疏水或亲水性光敏剂,纳米颗粒磷酸钙,在某些情况下,辅助试剂如稳定剂。 本发明的基于磷酸钙的纳米颗粒制剂提供优异的储存稳定性和用于静脉内或局部给药的治疗有效量的光敏剂。 在优选的实施方案中,四吡咯衍生物如卟啉,二氢卟酚和细菌二氢卟酚是拟配制在用于光动力学肿瘤治疗的磷酸钙纳米颗粒制剂中的优选的疏水性光敏剂。 另外,5,10,15,20-四(4-膦酰氧基苯基)卟吩(pTPPP)是用于光动力学肿瘤治疗的优选亲水性光敏剂。 在另一个优选的实施方案中,已经发现亲水性阳离子和阴离子光敏剂,特别是吩嗪鎓,吩噻嗪和呫吨系列的亲水性阳离子和阴离子光敏剂是无活性的病原体细菌,并且是配制在用于抗菌光动力学治疗的磷酸钙纳米颗粒制剂中的优选的光敏剂。 在另一个实施方案中,光敏纳米颗粒制剂可用于通过使用荧光成像方法定位细胞,组织或细菌。