Drug loading capacity is very important in the construction of targeted drug delivery systems(TDDSs)for the improvement of drug delivery efficiency.However,the drug-loading capacity of most nanomaterials is non-ideali...Drug loading capacity is very important in the construction of targeted drug delivery systems(TDDSs)for the improvement of drug delivery efficiency.However,the drug-loading capacity of most nanomaterials is non-idealistic,and developing the high drug-loading TDDSs is still a critical challenge.In this work,an ultrahigh loading system(denoted as HMPB_(2))was prepared via J-aggregation of an aza-boron dipyrromethene derivative(Bod)by using hollow MnO_(2)modified with glucosamine pillar[5]arene as a carrier,which was demonstrated to have typical J-aggregate absorption of Bod,specific cancer cells targeting ability,negligible dark cytotoxicity,and potent phototoxicity.This work provides a successful example to construct an ultrahigh drug-loading system via J-aggregation for targeted delivery.展开更多
Chemodynamic therapy(CDT)combined with dual phototherapy(photothermal therapy(PTT)and photodynamic therapy(PDT))is an efficient way to synergistically improve anti-tumor efficacy.However,the combination of multiple mo...Chemodynamic therapy(CDT)combined with dual phototherapy(photothermal therapy(PTT)and photodynamic therapy(PDT))is an efficient way to synergistically improve anti-tumor efficacy.However,the combination of multiple modes often makes the composition of the system more complex,which is not conducive to clinical application.In this study,a dual phototherapy ligand carboxyl-modified Aza-BODIPY(BOD-COOH)and metal active center Cu^(2+)were used to construct multiple-modes metalphotosensitizer nanoparticles(BOD-Cu NPs)via one-step coordination self-assembly for combination therapy of CDT/PDT/PTT.In order to improve delivery efficiency,the targeted hydrophilic molecule pyridinemodified glucose derivative(G-Py)was synthesized and coated onto the BOD-Cu NPs to form a glycosylated nano metal-photosensitizer BOD-Cu@G by electrostatic interaction.The Cu^(2+)in BOD-Cu@G could not only be used as a coordination node for metal-driven self-assembly but also consume intracellular glutathione(GSH),and then catalyze Fenton-like reaction to generate hydroxyl radical(·OH)for CDT.In vitro and in vivo studies revealed that BOD-Cu@G could achieve excellent anti-tumor efficiency by CDTenhanced dual phototherapy.展开更多
基金the National Natural Science Foundation of China(Nos.22171230 and 21877088)the Project of Science and Technology of Social Development in Shaanxi Province(No.2021SF-120)。
文摘Drug loading capacity is very important in the construction of targeted drug delivery systems(TDDSs)for the improvement of drug delivery efficiency.However,the drug-loading capacity of most nanomaterials is non-idealistic,and developing the high drug-loading TDDSs is still a critical challenge.In this work,an ultrahigh loading system(denoted as HMPB_(2))was prepared via J-aggregation of an aza-boron dipyrromethene derivative(Bod)by using hollow MnO_(2)modified with glucosamine pillar[5]arene as a carrier,which was demonstrated to have typical J-aggregate absorption of Bod,specific cancer cells targeting ability,negligible dark cytotoxicity,and potent phototoxicity.This work provides a successful example to construct an ultrahigh drug-loading system via J-aggregation for targeted delivery.
基金supported by the National Natural Science Foundation of China(No.22171230)the Project of Science and Technology of Social Development in Shaanxi Province(No.2023YBSF-151)。
文摘Chemodynamic therapy(CDT)combined with dual phototherapy(photothermal therapy(PTT)and photodynamic therapy(PDT))is an efficient way to synergistically improve anti-tumor efficacy.However,the combination of multiple modes often makes the composition of the system more complex,which is not conducive to clinical application.In this study,a dual phototherapy ligand carboxyl-modified Aza-BODIPY(BOD-COOH)and metal active center Cu^(2+)were used to construct multiple-modes metalphotosensitizer nanoparticles(BOD-Cu NPs)via one-step coordination self-assembly for combination therapy of CDT/PDT/PTT.In order to improve delivery efficiency,the targeted hydrophilic molecule pyridinemodified glucose derivative(G-Py)was synthesized and coated onto the BOD-Cu NPs to form a glycosylated nano metal-photosensitizer BOD-Cu@G by electrostatic interaction.The Cu^(2+)in BOD-Cu@G could not only be used as a coordination node for metal-driven self-assembly but also consume intracellular glutathione(GSH),and then catalyze Fenton-like reaction to generate hydroxyl radical(·OH)for CDT.In vitro and in vivo studies revealed that BOD-Cu@G could achieve excellent anti-tumor efficiency by CDTenhanced dual phototherapy.
