Gold nanomaterials are immerging candidates in medical diagnosis and treatment.Among them,gold nanorods(Au NRs)are widely used for cancer treatment.Tiopronin as a novel thiol drug was used to stabilize Au NRs in this ...Gold nanomaterials are immerging candidates in medical diagnosis and treatment.Among them,gold nanorods(Au NRs)are widely used for cancer treatment.Tiopronin as a novel thiol drug was used to stabilize Au NRs in this work.Doxorubicin(DOX),a chemotherapeutic drug which works by interacting with DNA to arrest the cell cycle and induce apoptosis,was linked to Au NRs through electrostatic reaction with tiopronin,to obtain Au-TIOP-DOX NRs.Au NRs are also regarded as hyperthermia agents for photothermal cancer treatment.This delivery system(Au-TIOP-DOX NRs)was designed for passively targeting tumor cells in cancer therapy.More importantly,the carboxyl groups of tiopronin can be modified with some biological molecules(DNA/RNA,peptides,or drugs)to make Au NRs as a novel drug-delivery system for cancer treatment.展开更多
Cancer chemotherapy can be hindered by drug resistance which leads to lower drug efficiency.Here,we have developed a drug delivery system that tethers doxorubicin to the surface of gold nanorods via a pHsensitive link...Cancer chemotherapy can be hindered by drug resistance which leads to lower drug efficiency.Here,we have developed a drug delivery system that tethers doxorubicin to the surface of gold nanorods via a pHsensitive linkage(AuNRs@DOX),for a combined photothermal and chemical therapy for cancer.First,AuNRs@DOX is ingested by HepG2 liver cancer cells.After endocytosis,the acidic pH triggers the release of doxorubicin,which leads to chemotherapeutic effects.The gold nanorods are not only carriers of DOX,but also photothermal conversion agents.In the presence of an 808 nm near-infrared laser,AuNRs@DOX significantly enhance the cytotoxicity of doxorubicin via the photothermal effect,which induces elevated apoptosis of hepG2 cancer cells,leading to better therapeutic effects in vitro and in vivo.展开更多
Gold nanorods(AuNRs)have attracted tremendous interest in biomedical fields due to their unique optical properties,tunable surface plasmon,and excellent biocompatibility.Their biomedical applications are mainly influe...Gold nanorods(AuNRs)have attracted tremendous interest in biomedical fields due to their unique optical properties,tunable surface plasmon,and excellent biocompatibility.Their biomedical applications are mainly influenced by near-infrared(NIR)light,which can guarantee deep penetration into human tissues with minimal loss.However,traditional single AuNRs are unable to carry medicine into the lesion regions.Furthermore,it is difficult for AuNR nanoparticles to be implemented in multimodal imagingguided synergetic therapy,which has limited the application of AuNRs in the field of theranostics.In recent years,researchers have made great strides in modifying gold nanorods into nanomaterials for the integration of diagnosis and treatment.After modifying different functionalized shells on the outsides of AuNRs,heterostructure AuNRs known as anisotropic gold nanorod(AAuNR)nanoparticles possessed bioimaging and cancer therapy abilities,as well as a variety of other amazing biomedical applications.In addition,AAuNR nanoparticles can combine biomedical imaging and therapy into one system to achieve multimodal bioimaging guided synergetic therapy.In this study,we presented a current review of the latest progress of different types of AAuNRs nanoparticles and their biomedical applications.Furthermore,the challenges and future development trends of AAuNR nanoparticles in the biomedical fields are discussed.展开更多
基金supported by the National Natural Science Foundation of China(30970784,81171455 and 31100720)National Basic Research Program of China(2009CB930200)+1 种基金Chinese Academy of Sciences(CAS)"Hundred Talents Program"(07165111ZX)CAS Knowledge Innovation Program and Tianjin Research Program of Applied Basic&Cutting-edge Technologies(09JCYBJC27200)
文摘Gold nanomaterials are immerging candidates in medical diagnosis and treatment.Among them,gold nanorods(Au NRs)are widely used for cancer treatment.Tiopronin as a novel thiol drug was used to stabilize Au NRs in this work.Doxorubicin(DOX),a chemotherapeutic drug which works by interacting with DNA to arrest the cell cycle and induce apoptosis,was linked to Au NRs through electrostatic reaction with tiopronin,to obtain Au-TIOP-DOX NRs.Au NRs are also regarded as hyperthermia agents for photothermal cancer treatment.This delivery system(Au-TIOP-DOX NRs)was designed for passively targeting tumor cells in cancer therapy.More importantly,the carboxyl groups of tiopronin can be modified with some biological molecules(DNA/RNA,peptides,or drugs)to make Au NRs as a novel drug-delivery system for cancer treatment.
基金The authors are grateful to the financial support from the National Key Research and Development Program of China(2016YFB0700804)the National Natural Science Foundation of China(51673171)+2 种基金Zhejiang Provincial Natural Science Foundation of China(LR16E030001,LR15H160001)the Fundamental Research Funds for the Central Universities of China(2018QNA4057)This study is supported in part by Key Laboratory of Reproductive Genetics(Zhejiang University),Ministry of Education,P.R.China/Women’s Reproductive Health Key Laboratory of Zhejiang Province/Uterine Tumors Research Center of Zhejiang Province(ZDFY2017-RG/RH-001).
文摘Cancer chemotherapy can be hindered by drug resistance which leads to lower drug efficiency.Here,we have developed a drug delivery system that tethers doxorubicin to the surface of gold nanorods via a pHsensitive linkage(AuNRs@DOX),for a combined photothermal and chemical therapy for cancer.First,AuNRs@DOX is ingested by HepG2 liver cancer cells.After endocytosis,the acidic pH triggers the release of doxorubicin,which leads to chemotherapeutic effects.The gold nanorods are not only carriers of DOX,but also photothermal conversion agents.In the presence of an 808 nm near-infrared laser,AuNRs@DOX significantly enhance the cytotoxicity of doxorubicin via the photothermal effect,which induces elevated apoptosis of hepG2 cancer cells,leading to better therapeutic effects in vitro and in vivo.
基金supported by the National Natural Science Foundation of China(Nos.U1505221,21635002,21874024,and 21475026,)the Program for Changjiang Scholars and Innovative Research Team in University(No.IRT15R11)+1 种基金the HealthEducation joint research project of Fujian Province(No.KJ2016-2-23)Young Thousand Talents Award,Minjiang Scholars of Fujian Province,and the Intramural Research Program(IRP)of the NIBIB,NIH.
文摘Gold nanorods(AuNRs)have attracted tremendous interest in biomedical fields due to their unique optical properties,tunable surface plasmon,and excellent biocompatibility.Their biomedical applications are mainly influenced by near-infrared(NIR)light,which can guarantee deep penetration into human tissues with minimal loss.However,traditional single AuNRs are unable to carry medicine into the lesion regions.Furthermore,it is difficult for AuNR nanoparticles to be implemented in multimodal imagingguided synergetic therapy,which has limited the application of AuNRs in the field of theranostics.In recent years,researchers have made great strides in modifying gold nanorods into nanomaterials for the integration of diagnosis and treatment.After modifying different functionalized shells on the outsides of AuNRs,heterostructure AuNRs known as anisotropic gold nanorod(AAuNR)nanoparticles possessed bioimaging and cancer therapy abilities,as well as a variety of other amazing biomedical applications.In addition,AAuNR nanoparticles can combine biomedical imaging and therapy into one system to achieve multimodal bioimaging guided synergetic therapy.In this study,we presented a current review of the latest progress of different types of AAuNRs nanoparticles and their biomedical applications.Furthermore,the challenges and future development trends of AAuNR nanoparticles in the biomedical fields are discussed.
