Pure photosensitizer-driven nanoassembly with core-matched PEGylation for imaging-guided photodynami

来源 :药学学报(英文版) | 被引量 : 0次 | 上传用户:clarinet1900
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Pure drug-assembled nanomedicines(PDANs)are currently under intensive investigation as promising nanoplatforms for cancer therapy.However,poor colloidal stability and less tumor-homing ability remain critical unresolved problems that impede their clinical translation.Herein,we report a core-matched nanoassembly of pyropheophorbide a(PPa)for photodynamic therapy(PDT).Pure PPa molecules are found to self-assemble into nanoparticles(NPs),and an amphiphilic PEG polymer(PPa-PEG2K)is utilized to achieve core-matched PEGylating modification via the π-π stacking effect and hy-drophobic interaction between the PPa core and the PPa-PEG2K shell.Compared to PCL-PEG2K with similar molecular weight,PPa-PEG2K significantly increases the stability,prolongs the systemic circula-tion and improves the tumor-homing ability and ROS generation efficiency of PPa-nanoassembly.As a result,PPa/PPa-PEG2K NPs exert potent antitumor activity in a 4T1 breast tumor-bearing BALB/c mouse xenograft model.Together,such a core-matched nanoassembly of pure photosensitizer provides a new strategy for the development of imaging-guided theragnostic nanomedicines.
其他文献
Although primary vesical calculi is an ancient disease,the mechanism of calculi formation remains unclear.In this study,we established a novel primary vesical calculi model with D,L-choline tartrate in mice.Compared with commonly used melamine and ethylen
Tumor cells have unique metabolic programming that is biologically distinct from that of corresponding normal cells.Resetting tumor metabolic programming is a promising strategy to amelio-rate drug resistance and improve the tumor microenvironment.Here,we
“放心!你一定不会错过它,这就像是你走在路上,用余光瞥到了一只独角兽.鬼笔就是真菌里的非主流,一个个都穿着奇装异服,只需一眼,你就无法忽视它的存在.”这是江苏省中国科学院植物研究所的郑玉红老师带我在南京植物园里寻找鬼笔时说的话.rn鬼笔是大型真菌(子实体肉眼可见的真菌)中的一类,听名字就知道它们不是籍籍无名的角色.古人觉得它们的菌盖形似毛笔,其上往往还包裹着深色的黏液,如同蘸了墨汁一般,故以鬼笔命名.在我国最早关于鬼笔的记载出现于唐代,在中药学家陈藏器写的药物学名著《本草拾遗》中,就有对它的描述:“鬼笔生
期刊
Bile acids(BAs)are amphipathic molecules important for metabolism of cholesterol,absorp-tion of lipids and lipid soluble vitamins,bile flow,and regulation of gut microbiome.There are over 30 different BA species known to exist in humans and mice,which are
An essential step for cancer vaccination is to break the immunosuppression and elicit a tumor-specific immunity.A major hurdle against cancer therapeutic vaccination is the insufficient im-mune stimulation of the cancer vaccines and lack of a safe and eff
Drug transportation is impeded by various barriers in the hypoxic solid tumor,resulting in compromised anticancer efficacy.Herein,a solid lipid monostearin(MS)-coated CaO2/MnO2 nanocarrier was designed to optimize doxorubicin(DOX)transportation comprehens
Glioblastoma is carcinogenesis of glial cells in central nervous system and has the highest incidence among primary brain tumors.Brain metastasis,such as breast cancer and lung cancer,also leads to high mortality.The available medicines are limited due to
The bile acid-responsive G-protein-coupled receptor TGR5 is expressed in monocytes and macrophages,and plays a critical role in regulating inflammatory response.Our previous work has shown its role in promoting the progression of non-small cell lung cance
Disease-mediated alterations to drug disposition constitute a significant source of adverse drug reactions.Cisplatin(CDDP)elicits nephrotoxicity due to exposure in proximal tubule cells during renal secretion.Alterations to renal drug transporter expressi
A chemical investigation on Sporormiella sp.led to the isolation and structural elucidation of tripodalsporormielones A-C(1-3),a new class of polyketide possessing unprecedented cage-like skel-etons with polyvdent bridged and fused ring systems.These poly