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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
    • Oral formulations for tetrapyrrole derivatives
    • 四吡咯衍生物的口服制剂
    • US08815931B2
    • 2014-08-26
    • US12768244
    • 2010-04-27
    • Susanna GräfeNikolay NifantievAlbrecht VolkerWolfgang NeubergerGerhard WielandDietrich ScheglmannAlfred FahrArno Wiehe
    • Susanna GräfeNikolay NifantievAlbrecht VolkerWolfgang NeubergerGerhard WielandDietrich ScheglmannAlfred FahrArno Wiehe
    • A61K31/40A61K9/127A61K31/498A61K9/00A61K31/409
    • A61K31/409A61K9/0065A61K9/127A61K9/1271A61K31/498
    • Oral formulations and method of formulating photosensitive agents for oral administration during photodynamic therapy (PDT) and Antimicrobial photodynamic therapy (APDT) treatment are presented. The oral formulated photosensitizers show increased solubility and permeability, thus improving the bioavailability of photosensitizers at the treatment site. An orally administered photosensitizer is suitably formulated for mucosal adhesion and absorption via gastrointestinal mucosal membranes. Oral formulation provided herein use lipids and known proteins as carriers for photosensitizers by oral route. Carriers for encapsulating preselected photosensitizers include conventional liposomes, pegylated liposomes, nanoemulsions, nanocrystrals, nanoparticles, fatty emulsions, lipidic formulations, hydrosols, SMEDDS, Alpha-Feto protein (AFP), and Bovine-Serum-Albumin (BSA), fatty emulsions, hot-melt-extrudates and nanoparticles. The oral formulation, in case of a hydrophobic photosensitizer in the present invention, is stabilized using suitable surfactants/solubilizers thus preventing aggregation of the drug in the stomach and until it is absorbed in the duodenum and the small intestine. Oral formulations can be administered in the form of liquid, capsule, tablet, powder, paste or gel. Formulated drugs can be administered orally as one single dose or in multiple doses before administering PDT. In one embodiment Temoporfin (m-THPC) is used as a photosensitizer in the oral formulations. Temoporfin like many hydrophobic photosensitizers are especially suitable to be administered orally because there is no known enzyme system in the mammalian body which can metabolize Temoporfin or similar photosensitizers. Temoporfin can reach the blood system unchanged and fully active after absorption of the formulation in the gastrointestinal tract.
    • 提出了在光动力治疗(PDT)和抗微生物光动力疗法(APDT)治疗中配制口服光敏剂的口服制剂和方法。 口服配制的光敏剂显示增加的溶解度和渗透性,从而提高光敏剂在治疗部位的生物利用度。 口服给药的光敏剂适于配制用于通过胃肠粘膜进行粘膜粘附和吸收。 本文提供的口服制剂通过口服途径使用脂质和已知蛋白质作为光敏剂的载体。 用于封装预选光敏剂的载体包括常规脂质体,聚乙二醇化脂质体,纳米乳剂,纳米胶体,纳米颗粒,脂肪乳剂,脂质制剂,水溶胶,SMEDDS,α-铁蛋白(AFP)和牛血清白蛋白(BSA),脂肪乳剂,热 熔融挤出物和纳米颗粒。 在本发明的疏水性光敏剂的情况下,使用合适的表面活性剂/增溶剂稳定口服制剂,从而防止药物在胃中的聚集,直到其被吸收到十二指肠和小肠中。 口服制剂可以以液体,胶囊,片剂,粉末,糊剂或凝胶的形式施用。 配制药物可以在给予PDT之前以一次剂量或多次剂量口服给药。 在一个实施方案中,Temoporfin(m-THPC)用作口服制剂中的光敏剂。 类似于许多疏水性光敏剂的Temoporfin特别适合于口服给药,因为哺乳动物体内没有已知的可以代谢Temoporfin或类似光敏剂的酶系统。 Temoporfin可以在胃肠道吸收制剂后达到血液系统不变和充分活性。
    • 5. 发明申请
    • Oral Formulations for Tetrapyrrole Derivatives
    • 四吡咯衍生物的口服制剂
    • US20100273803A1
    • 2010-10-28
    • US12768244
    • 2010-04-27
    • Susanna GräfeNikolay NifantievAlbrecht VolkerWolfgang NeubergerGerhard WielandDietrich ScheglmannAlfred FahrArno Wiehe
    • Susanna GräfeNikolay NifantievAlbrecht VolkerWolfgang NeubergerGerhard WielandDietrich ScheglmannAlfred FahrArno Wiehe
    • A61K31/498C07D241/46A61K31/409C07D487/22A61P35/00A61P31/00A61K8/49A61Q19/00A61Q9/00
    • A61K31/409A61K9/0065A61K9/127A61K9/1271A61K31/498
    • Oral formulations and method of formulating photosensitive agents for oral administration during photodynamic therapy (PDT) and Antimicrobial photodynamic therapy (APDT) treatment are presented. The oral formulated photosensitizers show increased solubility and permeability, thus improving the bioavailability of photosensitizers at the treatment site. An orally administered photosensitizer is suitably formulated for mucosal adhesion and absorption via gastrointestinal mucosal membranes. Oral formulation provided herein use lipids and known proteins as carriers for photosensitizers by oral route. Carriers for encapsulating preselected photosensitizers include conventional liposomes, pegylated liposomes, nanoemulsions, nanocrystrals, nanoparticles, fatty emulsions, lipidic formulations, hydrosols, SMEDDS, Alpha-Feto protein (AFP), and Bovine-Serum-Albumin (BSA), fatty emulsions, hot-melt-extrudates and nanoparticles. The oral formulation, in case of a hydrophobic photosensitizer in the present invention, is stabilized using suitable surfactants/solubilizers thus preventing aggregation of the drug in the stomach and until it is absorbed in the duodenum and the small intestine. Oral formulations can be administered in the form of liquid, capsule, tablet, powder, paste or gel. Formulated drugs can be administered orally as one single dose or in multiple doses before administering PDT. In one embodiment Temoporfin (m-THPC) is used as a photosensitizer in the oral formulations. Temoporfin like many hydrophobic photosensitizers are especially suitable to be administered orally because there is no known enzyme system in the mammalian body which can metabolize Temoporfin or similar photosensitizers. Temoporfin can reach the blood system unchanged and fully active after absorption of the formulation in the gastrointestinal tract.
    • 提出了在光动力治疗(PDT)和抗微生物光动力疗法(APDT)治疗中配制口服光敏剂的口服制剂和方法。 口服配制的光敏剂显示增加的溶解度和渗透性,从而提高光敏剂在治疗部位的生物利用度。 口服给药的光敏剂适于配制用于通过胃肠粘膜进行粘膜粘附和吸收。 本文提供的口服制剂通过口服途径使用脂质和已知蛋白质作为光敏剂的载体。 用于封装预选光敏剂的载体包括常规脂质体,聚乙二醇化脂质体,纳米乳剂,纳米胶体,纳米颗粒,脂肪乳剂,脂质制剂,水溶胶,SMEDDS,α-铁蛋白(AFP)和牛血清白蛋白(BSA),脂肪乳剂,热 熔融挤出物和纳米颗粒。 在本发明的疏水性光敏剂的情况下,使用合适的表面活性剂/增溶剂稳定口服制剂,从而防止药物在胃中的聚集,直到其被吸收到十二指肠和小肠中。 口服制剂可以以液体,胶囊,片剂,粉末,糊剂或凝胶的形式施用。 配制药物可以在给予PDT之前以一次剂量或多次剂量口服给药。 在一个实施方案中,Temoporfin(m-THPC)用作口服制剂中的光敏剂。 类似于许多疏水性光敏剂的Temoporfin特别适合于口服给药,因为哺乳动物体内没有已知的可以代谢Temoporfin或类似光敏剂的酶系统。 Temoporfin可以在胃肠道吸收制剂后达到血液系统不变和充分活性。
    • 6. 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。
    • 7. 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。