With its long-term empirical clinical practice and increasing number of health benefits reported,Chinese Materia Medica(CMM)is gaining increasing global acceptance.Importantly,the identification of chemical constituen...With its long-term empirical clinical practice and increasing number of health benefits reported,Chinese Materia Medica(CMM)is gaining increasing global acceptance.Importantly,the identification of chemical constituents in vitro and exposed forms in vivo is a prerequisite for understanding how CMM formulae prevent and treat diseases.This review systematically summarizes the exciting and magical journey of CMM components from compound formulae to where they fight,the possible structural transformation of CMM components in vitro and in vivo,and their pharmacological contribution.When a decoction is prepared,significant chemical reactions are observed,including degradation and production of polymers and self-assembling supramolecules,leading to the construction of a component library with diverse decoction structures.After ingestion,compounds pass through the intestinal and blood-brain barriers and undergo a more wonderful journey involving the gut microbiota,microbial enzymes,and endogenous drug-metabolizing enzymes(mainly liver enzymes).At this stage,they are modified and assembled into novel and complex compounds,such as newly generated metabolites,conjugates,and self-assembling superamolecules.This review might provide a strategic orientation to explore the active compounds of CMM formulae in vivo.展开更多
目的研究注射用胆固醇基磷酰齐多夫定(5’-cholesteryl-phosphoryl zidovudine,CPZ)自组装体冻干粉规模化制备的处方工艺和性质。方法采用注入法制备CPZ自组装体,将CPZ的乙醇溶液缓慢注入到水溶液中,并经过旋转蒸发、高压均质处理。通...目的研究注射用胆固醇基磷酰齐多夫定(5’-cholesteryl-phosphoryl zidovudine,CPZ)自组装体冻干粉规模化制备的处方工艺和性质。方法采用注入法制备CPZ自组装体,将CPZ的乙醇溶液缓慢注入到水溶液中,并经过旋转蒸发、高压均质处理。通过抑制CPZ分子解离,增加自组装体稳定性,优化处方工艺,涉及不同pH的磷酸盐缓冲液、不同pH的醋酸水溶液、甘露醇,并进一步筛选冻干保护剂用量和灭菌方法。用透射电镜观察CPZ自组装体,用纳米激光粒度仪测定其粒径及Zeta电位。结果 CPZ自组装体冻干粉最优处方工艺为在水溶液中加入甘露醇(甘露醇∶CPZ=2∶1),采用0.05%醋酸水溶液作为水相,可连续制备300 m L以上,并保持稳定。制备的自组装体经0.45μm无菌滤膜过滤灭菌。CPZ冻干粉加水重新分散后,自组装体的粒径为75.17 nm,PDI值为0.48,Zeta电位为-41.2 m V。透射电镜下显示CPZ自组装体为囊泡结构。结论本研究优化了规模化制备CPZ自组装体冻干粉的处方工艺,为该新型药物传递系统的成功研制打下基础。展开更多
Amphiphilic dendritic poly（glutarnic acid）-b-polyphenylalanine copolymers were synthesized using generation 3 dendritic poly（glutamic acid） as the macroinitiator in the ring-opening polymerization of NCA-Phe. The ...Amphiphilic dendritic poly（glutarnic acid）-b-polyphenylalanine copolymers were synthesized using generation 3 dendritic poly（glutamic acid） as the macroinitiator in the ring-opening polymerization of NCA-Phe. The block copolymers self-assembled micelles with polyphenylalanine segments as core and dendritic poly（glutamic acid） segments as shell. The biocompatibility of the micelles was studied. The release of the anticancer drug doxorubicin from the micelles was investigated in vitro. The results showed that the sustaining release of the drug could last for 60 h. The micellar drug release system was efficient in inhibiting the proliferation of HepG2 liver cancer cells, 75% cancer cells were killed under appropriate in vitro incubation.展开更多
Owing to the importance of drug delivery in cancer or other diseases' therapy, the targeted drug delivery (TDD) system has been attracting enormous interest. Herein, we model the TDD system and design a novel rod-...Owing to the importance of drug delivery in cancer or other diseases' therapy, the targeted drug delivery (TDD) system has been attracting enormous interest. Herein, we model the TDD system and design a novel rod-like nanocarrier by using the coarse grained model-based density functional theory, which combines a modified fundamental measure theory for the excluded-volume effects, Wertheim's first-order thermodynamics perturbation theory for the chain connectivity and the mean field approximation for van der Waals attraction. For comparison, the monomer nanocarrier TDD system and the no nanocarrier one are also investigated. The results indicate that the drug delivery capacity of rod-like nanocarriers is about 62 times that of the no nanocarrier one, and about 6 times that of the monomer nanocarriers. The reason is that the rod-like nanocarriers would self-assemble into the smectic phase perpendicular to the membrane surface. It is the self-assembly of the rod-like nanocarriers that yields the driving force for the targeted delivery of drugs inside the cell membrane. By contrast, the conventional monomer nanocarrier drug delivery system lacks the driving force to deliver the drugs into the cell membrane. In short, the novel rod-like nanocarrier TDD system may improve the drug delivery efficiency. Although the model in this work is simple, it is expected that the system may provide a new perspective for cancer targeted therapy.展开更多
基金supported by the National Natural Science Foundation of China(81873192 and 81202877)Postgraduate Research and Innovation Project of Tianjin(2021YJSB288 and YJSKC-20211004)the Science and Technology Program of Tianjin(Grant No.20ZYJDJC00070)
文摘With its long-term empirical clinical practice and increasing number of health benefits reported,Chinese Materia Medica(CMM)is gaining increasing global acceptance.Importantly,the identification of chemical constituents in vitro and exposed forms in vivo is a prerequisite for understanding how CMM formulae prevent and treat diseases.This review systematically summarizes the exciting and magical journey of CMM components from compound formulae to where they fight,the possible structural transformation of CMM components in vitro and in vivo,and their pharmacological contribution.When a decoction is prepared,significant chemical reactions are observed,including degradation and production of polymers and self-assembling supramolecules,leading to the construction of a component library with diverse decoction structures.After ingestion,compounds pass through the intestinal and blood-brain barriers and undergo a more wonderful journey involving the gut microbiota,microbial enzymes,and endogenous drug-metabolizing enzymes(mainly liver enzymes).At this stage,they are modified and assembled into novel and complex compounds,such as newly generated metabolites,conjugates,and self-assembling superamolecules.This review might provide a strategic orientation to explore the active compounds of CMM formulae in vivo.
文摘目的研究注射用胆固醇基磷酰齐多夫定(5’-cholesteryl-phosphoryl zidovudine,CPZ)自组装体冻干粉规模化制备的处方工艺和性质。方法采用注入法制备CPZ自组装体,将CPZ的乙醇溶液缓慢注入到水溶液中,并经过旋转蒸发、高压均质处理。通过抑制CPZ分子解离,增加自组装体稳定性,优化处方工艺,涉及不同pH的磷酸盐缓冲液、不同pH的醋酸水溶液、甘露醇,并进一步筛选冻干保护剂用量和灭菌方法。用透射电镜观察CPZ自组装体,用纳米激光粒度仪测定其粒径及Zeta电位。结果 CPZ自组装体冻干粉最优处方工艺为在水溶液中加入甘露醇(甘露醇∶CPZ=2∶1),采用0.05%醋酸水溶液作为水相,可连续制备300 m L以上,并保持稳定。制备的自组装体经0.45μm无菌滤膜过滤灭菌。CPZ冻干粉加水重新分散后,自组装体的粒径为75.17 nm,PDI值为0.48,Zeta电位为-41.2 m V。透射电镜下显示CPZ自组装体为囊泡结构。结论本研究优化了规模化制备CPZ自组装体冻干粉的处方工艺,为该新型药物传递系统的成功研制打下基础。
基金supported by the National Basic Research Program of China (973 Program,2011CB606206)National High-Tech Research & Development Program of China (863 Program,2007AA021801)+2 种基金National Natural Science Foundation of China (50633020 & 50830105)Sichuan Youth Science & Technology Foundation (07ZQ026-013)Open Fund of Engineering Research Center of Biomass Materials,Ministry of Education (2010LF4002)
文摘Amphiphilic dendritic poly（glutarnic acid）-b-polyphenylalanine copolymers were synthesized using generation 3 dendritic poly（glutamic acid） as the macroinitiator in the ring-opening polymerization of NCA-Phe. The block copolymers self-assembled micelles with polyphenylalanine segments as core and dendritic poly（glutamic acid） segments as shell. The biocompatibility of the micelles was studied. The release of the anticancer drug doxorubicin from the micelles was investigated in vitro. The results showed that the sustaining release of the drug could last for 60 h. The micellar drug release system was efficient in inhibiting the proliferation of HepG2 liver cancer cells, 75% cancer cells were killed under appropriate in vitro incubation.
基金supported by the National Natural Science Foundation of China (20874005, 20736002, 20821004)the National Basic Research Program of China (2011CB706900)+1 种基金Huo Yingdong Fundamental Research Foundation (121070)Novel Team (IRT0807) from Ministry of Education and the Chemical Grid Project of BUCT
文摘Owing to the importance of drug delivery in cancer or other diseases' therapy, the targeted drug delivery (TDD) system has been attracting enormous interest. Herein, we model the TDD system and design a novel rod-like nanocarrier by using the coarse grained model-based density functional theory, which combines a modified fundamental measure theory for the excluded-volume effects, Wertheim's first-order thermodynamics perturbation theory for the chain connectivity and the mean field approximation for van der Waals attraction. For comparison, the monomer nanocarrier TDD system and the no nanocarrier one are also investigated. The results indicate that the drug delivery capacity of rod-like nanocarriers is about 62 times that of the no nanocarrier one, and about 6 times that of the monomer nanocarriers. The reason is that the rod-like nanocarriers would self-assemble into the smectic phase perpendicular to the membrane surface. It is the self-assembly of the rod-like nanocarriers that yields the driving force for the targeted delivery of drugs inside the cell membrane. By contrast, the conventional monomer nanocarrier drug delivery system lacks the driving force to deliver the drugs into the cell membrane. In short, the novel rod-like nanocarrier TDD system may improve the drug delivery efficiency. Although the model in this work is simple, it is expected that the system may provide a new perspective for cancer targeted therapy.
