Construction of uPAR-Targeted Heterostructures for Efficient Photothermal-Chemotherapy against Cervi

来源 :第十一届全国化学生物学学术会议 | 被引量 : 0次 | 上传用户:qazwsx07555
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  Rational design and construction of theranostic nanomedicines based on clinical characteristics of cervical cancer is an important strategy to achieve precise cancer therapy and translational application of nanomedicine.Herein,we fabricate a cervical cancer-targeting gold nanorod-mesoporous silica heterostructure for co-delivery of synergistic cisplatin and antiangiogenic drug Avastin(cisplatin-AuNRs@SiO2-Avastin@PEI/AE105)to achieve synergistic chemo-photothermal therapy.Based on database analysis and clinical samples staining,conjugation of AE105 targeting peptide obviously improves the intracellular uptake of the nanosystem via receptor-mediated endocytosis,and increases the cancer-killing ability and selectivity between cervical cancer and normal cells.It could also be used to specifically monitor urokinase plasminogen activator receptor(uPAR)expression level in clinical cervical specimens,which would be an early indicator of prognosis in cancer treatment.Under 808 nm laser irradiation,the nanosystem demonstrates smart NIR-light-triggered drug release and prominent photodynamic activity via induction of ROS overproduction-mediated cell apoptosis.As expected,this nanosystem also significantly inhibits the migration,invasion and tube formation of HUVEC cells.In in vivo study,the nanosystem simultaneously suppresses HeLa tumor growth and angiogenesis,with no evident histological damage observed in the major organs.In short,this study not only provides a clinical data-based rational design strategy of smart nanomedicine for precise treatment and rapid clinical diagnosis of cervical cancer,but also contributes to the development of the clinical translation of nanomedicines.
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