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    • 1. 发明授权
    • Drug delivery system for the simultaneous delivery of drugs activatable
by enzymes and light
    • 用于同时递送通过酶和光激活的药物的药物递送系统
    • US5258453A
    • 1993-11-02
    • US822924
    • 1992-01-21
    • Jindrich KopecekNancy L. Krinick
    • Jindrich KopecekNancy L. Krinick
    • A61K41/00A61K47/48C08F20/04C08F20/52C08F20/56C08F120/04C08G63/48C08G63/91A61L9/01
    • A61K47/48176A61K41/0071Y10S530/811Y10S530/812Y10S530/815Y10S530/816
    • Compositions for the treatment of cancerous tissues in warm-blooded animals containing both an anticancer drug and a photoactivatable drug attached to copolymeric carriers are made up of a member selected from the group consisting of (a) a copolymeric carrier having attached thereto both an anticancer drug and a photoactivatable drug, (b) a mixture of copolymeric carriers wherein one copolymeric carrier has attached an anticancer drug and the other copolymeric carrier has attached a photoactivatable drug and (c) a combination of (a) and (b). The anticancer drug is attached to the polymeric carrier by side-chains which are stable in the blood stream of the warm-blooded animal but susceptible to hydrolysis by lysosomal enzymes intracellularly. The photoactivatable drug is attached by either the same degradable side-chain or by a non-degradable attachment. The polymer carrier may optionally contain a targeting moiety. Upon administration polymeric macromolecules enter targeted cancer cells by pinocytosis which reduces the side effects normally elicited by the free drugs. A time lag is allowed following administration for optimal uptake of the copolymers in the cancerous tissue for the anticancer agent to begin to take effect. Then a light sources of the appropriate wavelength and energy is to activate the photoactivatable drug. The combined effect of the anticancer agent and photoactivatable drug provides greater cell destruction at reduced dosages and side effects.
    • 用于治疗包含附着在共聚载体上的抗癌药物和可光活化药物的温血动物中的癌组织的组合物由选自以下的成员组成:(a)与抗癌药物 和可光活化药物,(b)共聚载体的混合物,其中一种共聚载体已经附着有抗癌药物,另一种共聚载体附着有可光活化药物,和(c)(a)和(b)的组合。 抗癌药物通过在温血动物的血液中稳定但易于细胞内溶酶体酶水解的侧链的侧链连接到聚合物载体上。 可光活化药物通过相同的可降解侧链或不可降解的附着物连接。 聚合物载体可任选地含有靶向部分。 在施用聚合物大分子时,通过胞饮作用进入靶向的癌细胞,其减少通常由游离药物引起的副作用。 给药后允许时间延迟以使抗癌剂的癌组织中的共聚物的最佳摄取开始起作用。 那么合适的波长和能量的光源就是激活可光活化的药物。 抗癌剂和可光活化药物的组合效果在降低的剂量和副作用下提供更大的细胞破坏。
    • 9. 发明授权
    • Preparation of biogically active substances bearing -NH.sub.2 groups in
a form releasable by enzymatic cleavage
    • 制备具有-NH(HD 2)(以酶切割释放的形式的B基团)的生物活性物质
    • US4097470A
    • 1978-06-27
    • US584887
    • 1975-06-09
    • Jaroslav DrobnikJindrich KopecekJiri LabskyPavla RejmanovaJosef ExnerJaroslav Kalal
    • Jaroslav DrobnikJindrich KopecekJiri LabskyPavla RejmanovaJosef ExnerJaroslav Kalal
    • C08F220/36C08F220/60C08F16/28C08F24/00C08F210/00
    • C08F220/36C08F220/60Y10S260/47
    • Polymeric form of a biologically active compound containing at least one -NH.sub.2 group in its molecule, adapted for the protracted release of said biologically active compound by enzymatic cleavage of the polymer in vivo in the organism. The active compound is bonded by its -NH.sub.2 group to the carboxylic group of an L-amino acid as for instance, .beta.-phenylalanine, tyrosine, tryptophane, lysine, arginine, glycine, alanine, leucine, citruline or ornithine, which latter is in twin bonded by its amino group to the terminal carboxylic group of the side chain of a substituted amide or ester of acrylic or methacrylic acid, said side chain constituting a linear moiety containing at least 3 carbon atoms. The latter compound or monomer is copolymerized with a hydrophilic monomer such as, N-alkylmethacrylamide, N-alkylacrylamide, N,N-dialkylacrylamide, wherein alkyl has 1-6 carbon atoms and may contain 1 to 3 OH groups, or glycol acrylate or methacrylate alone or in admixture, and which copolymer may contain further monomeric components, for example, cross-linking agents. It is the copolymer which constitutes the subject matter of the invention, i.e., the biologically active substance bearing -NH.sub.2 groups in a form releasable by enzymatic cleavage. The copolymer can also be prepared using as the monomer a compound containing the bonded L-amino acid and in which the terminal carboxylic group has been converted to the reactive ester. The active compound is then bonded to the thusly prepared reactive polymer. The enzymatic release of the active compound bearing -NH.sub.2 groups can be controlled, i.e., regulated by the size of the side chain carrying the L-amino acid.
    • 在其分子中含有至少一个-NH 2基团的生物活性化合物的聚合形式,适于通过生物体内的体内酶的裂解来延长所述生物活性化合物的释放。 活性化合物通过其-NH 2基团与L-氨基酸的羧基键合,例如β-苯丙氨酸,酪氨酸,色氨酸,赖氨酸,精氨酸,甘氨酸,丙氨酸,亮氨酸,柠檬酸或鸟氨酸,后者位于 双键通过其氨基键合至取代酰胺或丙烯酸或甲基丙烯酸酯的侧链的末端羧基,所述侧链构成含有至少3个碳原子的直链部分。 后一种化合物或单体与亲水性单体如N-烷基甲基丙烯酰胺,N-烷基丙烯酰胺,N,N-二烷基丙烯酰胺共聚合,其中烷基具有1-6个碳原子并且可以含有1至3个OH基团,或二醇丙烯酸酯或甲基丙烯酸酯 单独或混合,并且哪种共聚物可以含有其它单体组分,例如交联剂。 构成本发明主题的共聚物,即具有可通过酶裂解释放形式的-NH 2基团的生物活性物质。 共聚物也可以使用含有键合的L-氨基酸的化合物作为单体制备,并且其中末端羧基已经转化成反应性酯。 然后将活性化合物与如此制备的反应性聚合物结合。 可以控制带有-NH 2基团的活性化合物的酶促释放,即通过携带L-氨基酸的侧链的大小来调节。