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    • 1. 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
    • WO2010078941A1
    • 2010-07-15
    • PCT/EP2009/009142
    • 2009-12-18
    • BIOLITEC AGUNIVERSITÄT DUISBURG-ESSENSCHWIERTZ, JanineGANESAN, KathirvelEPPLE, MatthiasWIEHE, ArnoGRÄFE, SusannaGITTER, BurkhardALBRECHT, Volker
    • SCHWIERTZ, JanineGANESAN, KathirvelEPPLE, MatthiasWIEHE, ArnoGRÄFE, SusannaGITTER, BurkhardALBRECHT, Volker
    • A61K41/00A61K9/16
    • 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, p TPPP 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,pTPPP是用于光动力学肿瘤治疗的优选的亲水性光敏剂。 在另一个优选的实施方案中,亲水性阳离子和阴离子光敏剂,特别是phenazineium,吩噻嗪和呫吨系列的光敏剂已经被发现为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。
    • 2. 发明申请
    • NANOPARTICLE CARRIER SYSTEMS BASED ON POLY(DL-LACTIC-CO-GLYCOLIC ACID) (PLGA) FOR PHOTODYNAMIC THERAPY (PDT)
    • 基于聚合(DL-LACTIC-CO-GLYCOLIC ACID)(PLGA)用于光化学治疗(PDT)的纳米载体系统
    • WO2011071970A2
    • 2011-06-16
    • PCT/US2010/059367
    • 2010-12-08
    • BIOLITEC, INC.LANGER, KlausKNOBLOCH, ThomasRÖDER, BeatePREUSS, AnnegretALBRECHT, VolkerGRÄFE, SusannaWIEHE, Arnovon BRIESEN, HagenLÖW, KarinWAGNER, Sylvia
    • LANGER, KlausKNOBLOCH, ThomasRÖDER, BeatePREUSS, AnnegretALBRECHT, VolkerGRÄFE, SusannaWIEHE, Arnovon BRIESEN, HagenLÖW, KarinWAGNER, Sylvia
    • A61K47/30A61K33/20A61K9/127A61P35/00A61P27/02A61P29/00
    • A61K9/5153A61K33/20A61K41/0071
    • Compositions, which are stable in storage, and a method of production of pharmaceutical based nanoparticutate formulations for clinical use in photodynamic therapy comprising a hydrophobic photosensitizer, poly(lactic-co-glycolic) acid and stabilizing agents are provided. These nanoparticulate pharmaceutical formulations provide therapeutically effective amounts of photosensitizer for parenteral administration. In particular, tetrapyrrole derivatives can be used as photosensitizers, whose efficacy and safety are enhanced by such nanoparticulate formulations. It also leaches the method of preparing PLGA-based nanoparticles under sterile conditions. In one of the preferred embodiments of the present invention PLGA-based nanoparticles have a mean particle size less than 500nm and the photosensitizer is temoporfϊn, 5,10,15,20-tetrakis(3-hydroxyphenyl)-chlorin ( m THPC). In another embodiment, the photosensitizer 2,3-dihydroxy-5,10,15,20-tetrakis(3- hydroxyphenyl)-chlorin ( m THPD-OH) is formulated as a nanoparticle for parenteral administration. Yet, in another embodiment preferred photosensitizer is 5,10,15,20-tetrakis(3- hydroxyphenyl)-porphyrin ( m THPP). The formulations can be used for treating hyperptasic and neoplasia conditions, inflammatory problems, and more specifically to target tumor cells.
    • 提供了在储存中稳定的组合物以及用于临床用于光动力疗法的基于药物的纳米颗粒制剂的方法,其包括疏水性光敏剂,聚(乳酸 - 共 - 乙醇酸)酸和稳定剂。 这些纳米颗粒药物制剂提供治疗有效量的用于肠胃外给药的光敏剂。 特别地,四吡咯衍生物可以用作光敏剂,其功效和安全性通过这种纳米颗粒制剂增强。 它还浸出了在无菌条件下制备基于PLGA的纳米颗粒的方法。 在本发明的一个优选实施方案中,基于PLGA的纳米颗粒具有小于500nm的平均粒度,并且光敏剂是temoporf TM,5,10,15,20-四(3-羟基苯基) - 氯化物(mTHPC)。 在另一个实施方案中,将光敏剂2,3-二羟基-5,10,15,20-四(3-羟基苯基) - 青霉素(mTHPD-OH)配制成用于肠胃外给药的纳米颗粒。 然而,在另一个实施方案中,优选的光敏剂是5,10,15,20-四(3-羟基苯基) - 卟啉(mTHPP)。 该制剂可用于治疗高血压和瘤形成症状,炎症问题,更具体地用于靶向肿瘤细胞。