摘要:
Tetrapyrrolic photosensitizers and imaging agent compounds having A, B, C, and D rings and having a reduced B ring and an oxidized D ring. The compounds preferably have a purity of at least 95 percent and preferably have a fused system connected at an unsaturated carbon atom of the C ring nearest the D ring and at the unsaturated carbon atom between the C and D rings. The invention also includes a method of making the compounds at over 95 percent yield by starting with a B and D ring oxidized tetrapyrollic compound and dissolving it in a halogenated hydrocarbon solvent and treating it with sufficient nitroalkane solution of FeCl36H2O to oxidize the D ring and separating the resulting organic layer and drying.
摘要:
Tetrapyrollic photosensitizers and imaging agent compounds having A, B, C, and D rings and having a reduced B ring and an oxidized D ring. The compounds preferably have a purity of at least 95 percent and preferably have a fused system connected at an unsaturated carbon atom of the C ring nearest the D ring and at the unsaturated carbon atom between the C and D rings. The invention also includes a method of making the compounds at over 95 percent yield by starting with a B and D ring oxidized tetrapyrollic compound and dissolving it in a halogenated hydrocarbon solvent and treating it with sufficient nitroalkane solution of FeCl3.6H2O to oxidize the D ring and separating the resulting organic layer and drying.
摘要:
A nanoparticle including a polysiloxane base having an exterior surface and having a photosensitizer at least partly exposed at its exterior surface, said photosensitizer being secured to the exterior surface by loading the photosensitizer onto the surface after formation of the polysiloxane base of the nanoparticle. The nanoparticle may have tumor targeting moieties and may be post loaded with cyanine dye. The nanoparticle preferably includes post loaded moieties providing at least two of tumor specificity, photodynamic properties and imaging capabilities and the photosensitizer is tagged with a radioisotope. A method for preparation of the nanoparticle is also provided.
摘要:
A method for treating hyperproliferative tissue in a mammal which tissue expresses ABCG2 including the steps of: a) systemically introducing from about 100 to about 1000 mg/kg of body weight of a tyrosine kinase inhibiting compound into the mammal; b) within from about 0.5 to about 24 hours after the introducing in step a) systemically introducing from about 0.05 to about 0.5 μmol per kilogram of body weight of a tumor avid photosensitizing compound, that acts as a substrate for ABC family transport protein, ABCG2 and that has a preferential light absorbance frequency; and c) exposing the hyperproliferative tissue to light at a fluence of from about 50 to about 150 J/cm2 delivered at a rate of from about 5 to about 25 mW/cm2 at the light absorbance frequency. The photosensitizing compound is preferably a tetrapyrollic photosensitizer compound where the tetrapyrollic compound is a chlorin, bacteriochlorin, porphyrin, pheophorbide including pyropheophorbides, purpurinimide, or bacteriopurpurinimide and derivatives thereof; provided that, the photosensizing compound is not a meso-tetra (3-hydroxyphenyl) derivative, is not a saccharide derivative and is not a hematoporphyrin.
摘要翻译:一种用于治疗组织表达ABCG2的哺乳动物的过度增殖组织的方法,包括以下步骤:a)将约100至约1000mg / kg体重的酪氨酸激酶抑制化合物全身引入哺乳动物; b)在步骤a)中引入后约0.5至约24小时内,全身引入约0.05至约0.5μmol/千克体重的肿瘤avid光敏化合物,其作为ABC家族转运蛋白ABCG2的底物 并具有优先吸光度频率; 和c)以约5至约25mW / cm 2的速率在吸光度频率下以约50至约150J / cm 2的流量通量使过度增殖组织曝光。 光敏化合物优选为四级光敏剂化合物,其中四味化合物是二氢卟酚,细菌二氢卟酚,卟啉,含有偏高双歧杆菌,嘌呤酰亚胺或嘌呤嘌呤酰亚胺及其衍生物的脱镁叶绿素; 光敏化合物不是内消旋 - 四(3-羟基苯基)衍生物,不是糖衍生物,不是血卟啉。
摘要:
A compound that is a conjugate of an antagonist to an integrin expressed by a tumor cell and at least one of a tumor avid tetrapyrollic photosensitizer, a fluorescent dye, and a radioisotope labeled moiety wherein the radioisotope is 11C, 18F, 64Cu, 124I, 99Tc, 111In or GdIII and its method of use for diagnosing, imaging and/or treating hyperproliferative tissue such as tumors. Preferably the photosensitizer is a tumor avid tetrapyrollic photosensitizer, e.g. a porphyrin, chlorin or bacteriochlorin, e.g. pheophorbides and pyropheophorbides. Such conjugates have extreme tumor avidity and can be used to inhibit or completely destroy the tumor by light absoption. The integrin is usually αvβ3, α5β1, αvβ5, α4β1, or α2β1. Preferably, the antagonist is an RGD peptide or another antagonist that may be synthetic such as a 4-{2-(3,4,5,6-tetra-hydropyrimidin-2-ylamino)ethyloxy}-benzoyl]amino-2-(S)-amino-ethyl-sulfonylamino group. Such compounds provide tumor avidity and imaging ability thus permitting selective and clear tumor imaging.
摘要:
This invention describes a first report on the synthesis of certain 124I-labelled photosensitizers related to chlorines and bacteriochlorins with long wavelength absorption in the range of 660-800 nm. In preliminary studies, these compounds show a great potential for tumor detection by positron emission tomography (PET) and treatment by photodynamic therapy (PDT). The development of tumor imaging or improved photodynamic therapy agent(s) itself represent an important step, but a dual function agent (PET imaging and PDT) provides the potential for diagnostic body scan followed by targeted therapy.
摘要:
This invention describes a first report on the synthesis of certain 124I-labelled photosensitizers related to chlorines and bacteriochlorins with long wavelength absorption in the range of 660-800 nm. In preliminary studies, these compounds show a great potential for tumor detection by positron emission tomography (PET) and treatment by photodynamic therapy (PDT). The development of tumor imaging or improved photodynamic therapy agent(s) itself represent an important step, but a dual function agent (PET imaging and PDT) provides the potential for diagnostic body scan followed by targeted therapy.
摘要:
A tetrapyrollic photosensitizer compound having at least one pendant —CH2CH2CON(CH2CON(CH2COOH)2)2 or —N(CH2COOH)2 group or esters thereof said tetrapyrollic compound being a chlorin, bacteriochlorin, porphyrin, pyropheophorbide, purpurinimide, or bacteriopurpurinimide. Desirably the compound has the formula: or a pharmaceutically acceptable derivative thereof, wherein R1-R8 and R10 are various substituents and R9 is substituted or unsubstituted —CH2CH2CON(CH2CON(CH2COOH)2)2; or —N(CH2COOH)2. The invention also includes a method of treatment by photodynamic therapy by treatment with light after injecting the compound and a method of imaging by fluorescence after injection of the compound.
摘要:
A tetrapyrollic photosensitizer compound having at least one pendant —CH2CH2CON(CH2CON(CH2COOH)2)2 or —N(CH2COOH)2 group or esters thereof said tetrapyrollic compound being a chlorin, bacteriochlorin, porphyrin, pyropheophorbide, purpurinimide, or bacteriopurpurinimide. Desirably the compound has the formula: or a pharmaceutically acceptable derivative thereof, wherein R1—R8 and R10 are various substituents and R9 is substituted or unsubstituted —CH2CH2CON(CH2CON(CH2COOH)2)2; or —N(CH2COOH)2. The invention also includes a method of treatment by photodynamic therapy by treatment with light after injecting the compound and a method of imaging by fluorescence after injection of the compound.
摘要:
A tetrapyrollic photosensitizer compound having at least one pendant —CH2CH2CON(CH2CON(CH2COOH)2)2 or —N(CH2COOH)2 group or esters thereof said tetrapyrollic compound being a chlorin, bacteriochlorin, porphyrin, pyropheophorbide, purpurinimide, or bacteriopurpurinimide. Desirably the compound has the formula: or a pharmaceutically acceptable derivative thereof, wherein R1-R8 and R10 are various substituents and R9 is substituted or unsubstituted —CH2CH2CON(CH2CON(CH2COOH)2)2; or —N(CH2COOH)2. The invention also includes a method of treatment by photodynamic therapy by treatment with light after injecting the compound and a method of imaging by fluorescence after injection of the compound.