In this work,iron-doped carbon dots(Fe-CDs)with strong peroxidase-mimicking activity were synthesized for tumor-specific therapy.Their intrinsic red fluorescence enabled high-contrast cellular imaging,revealing prefer...In this work,iron-doped carbon dots(Fe-CDs)with strong peroxidase-mimicking activity were synthesized for tumor-specific therapy.Their intrinsic red fluorescence enabled high-contrast cellular imaging,revealing preferen⁃tial mitochondrial accumulation.In the acidic and hydrogen peroxide(H_(2)O_(2))-rich tumor microenvironment,Fe-CDs catalyzed hydroxyl radical(·OH)generation,inducing oxidative stress and lipid peroxidation,ultimately triggering ferroptosis.In vitro and in vivo studies demonstrated potent tumor inhibition.Furthermore,Fe-CDs exhibited excel⁃lent biocompatibility with no significant systemic toxicity.By integrating fluorescence imaging and catalytic therapy,this study presents a promising nanoplatform for tumor treatment and ferroptosis research.展开更多
A nanomicelle(denoted as TPGS/Ppa)was fabricated via the coassembly of the amphiphilic D-α-tocopheryl polyethylene glycol 1000 succinate(TPGS)and the hydrophobic photosensitizer pyropheophorbide a(Ppa)for photodynami...A nanomicelle(denoted as TPGS/Ppa)was fabricated via the coassembly of the amphiphilic D-α-tocopheryl polyethylene glycol 1000 succinate(TPGS)and the hydrophobic photosensitizer pyropheophorbide a(Ppa)for photodynamic therapy(PDT).The obtained nanomicelle possessed a spherical structure with a diameter of(18.0±2.2)nm and a zeta potential of approximately -18 mV.Besides,the nanomicelle exhibited excellent photostability,biocompatibility,and phototoxicity,and could effectively reach the tumor region via the enhanced permeability and retention effect.Additionally,it could be found that the TPGS/Ppa nanomicelle exhibited higher phototoxicity against 4T1 murine mammary cancer cells than free Ppa.In the 4T1 tumor-bearing mouse model,the nanomicelle showed an excellent antitumor therapeutic effect.This study develops a new type of photodynamic nanomicelle TPGS/Ppa,which can increase the accumulation of drugs and prolong their tumor retention time,providing a feasible strategy for realizing the delivery of small-molecule hydrophobic drugs and tumor PDT.展开更多
The realization of real-time thermal feedback for monitoring photothermal therapy(PTT)under near-infrared(NIR)light irradiation is of great interest and challenge for antitumor therapy.Herein,by assembling highly effi...The realization of real-time thermal feedback for monitoring photothermal therapy(PTT)under near-infrared(NIR)light irradiation is of great interest and challenge for antitumor therapy.Herein,by assembling highly efficient photothermal conversion gold nanorods and a temperature-responsive probe((E)-4-(4-(diethylamino)styryl)-1-methylpyridin-1-ium,PyS)within MOF-199,an intelligent nanoplatform(AMPP)was fabricated for simultaneous chemodynamic therapy and NIR light-induced temperature-feedback PTT.The fluorescence intensity and temperature of the PyS probe are linearly related due to the restriction of the rotation of the characteristic monomethine bridge.Moreover,the copper ions resulting from the degradation of MOF-199 in an acidic microenvironment can convert H_(2)O_(2)into•OH,resulting in tumor ablation through a Fenton-like reaction,and this process can be accelerated by increasing the temperature.This study establishes a feasible platform for fabricating highly sensitive temperature sensors for efficient temperature-feedback PTT.展开更多
Corrole,a representative branch of porphyrin,has recently gained popularity.These molecules,viewed as ring‑contracted porphyrinoids containing direct pyrrole‑pyrrole linkages due to the absence of a meso‑carbon atom,e...Corrole,a representative branch of porphyrin,has recently gained popularity.These molecules,viewed as ring‑contracted porphyrinoids containing direct pyrrole‑pyrrole linkages due to the absence of a meso‑carbon atom,exhibit significant photo‑physicochemical properties that make them attractive for various applications.Herein,this review comprehensively discusses the remarkable properties of corrole complexes,as well as related structures and chelation properties.It further explores the biological applications of corrole complexes for in vivo imaging and anticancer therapy.Additionally,it addresses common research bottlenecks and challenges,providing insights into future potential applications in disease diagnosis and treatment.Generally,this review aims to illuminate the significance of corrole complexes and their promising biological applications.展开更多
通过检索PubMed、Web of Science、中国知网和万方等数据库,对近年来发表的有关扁平足在生物力学上的成因和治疗方法的相关内容进行综述。其中,扁平足的形成原因包括先天性因素和后天性因素,而治疗方法主要有矫形鞋垫、物理疗法、手术...通过检索PubMed、Web of Science、中国知网和万方等数据库,对近年来发表的有关扁平足在生物力学上的成因和治疗方法的相关内容进行综述。其中,扁平足的形成原因包括先天性因素和后天性因素,而治疗方法主要有矫形鞋垫、物理疗法、手术治疗和运动疗法。这些方法在一定程度上能够纠正足部结构异常,优化生物力学性能,提高足部的稳定性和活动范围。对于未来的研究,将利用先进的影像和仿真技术进行精确的病情评估,新型材料和非手术疗法的应用将能够长期缓解症状,而基因研究将推动早期诊断和个性化治疗的发展,智能矫形器的使用将实现实时监测和动态调整,从而为扁平足的评估、干预和治疗提供更多更有效的方法和手段。展开更多
文摘In this work,iron-doped carbon dots(Fe-CDs)with strong peroxidase-mimicking activity were synthesized for tumor-specific therapy.Their intrinsic red fluorescence enabled high-contrast cellular imaging,revealing preferen⁃tial mitochondrial accumulation.In the acidic and hydrogen peroxide(H_(2)O_(2))-rich tumor microenvironment,Fe-CDs catalyzed hydroxyl radical(·OH)generation,inducing oxidative stress and lipid peroxidation,ultimately triggering ferroptosis.In vitro and in vivo studies demonstrated potent tumor inhibition.Furthermore,Fe-CDs exhibited excel⁃lent biocompatibility with no significant systemic toxicity.By integrating fluorescence imaging and catalytic therapy,this study presents a promising nanoplatform for tumor treatment and ferroptosis research.
文摘A nanomicelle(denoted as TPGS/Ppa)was fabricated via the coassembly of the amphiphilic D-α-tocopheryl polyethylene glycol 1000 succinate(TPGS)and the hydrophobic photosensitizer pyropheophorbide a(Ppa)for photodynamic therapy(PDT).The obtained nanomicelle possessed a spherical structure with a diameter of(18.0±2.2)nm and a zeta potential of approximately -18 mV.Besides,the nanomicelle exhibited excellent photostability,biocompatibility,and phototoxicity,and could effectively reach the tumor region via the enhanced permeability and retention effect.Additionally,it could be found that the TPGS/Ppa nanomicelle exhibited higher phototoxicity against 4T1 murine mammary cancer cells than free Ppa.In the 4T1 tumor-bearing mouse model,the nanomicelle showed an excellent antitumor therapeutic effect.This study develops a new type of photodynamic nanomicelle TPGS/Ppa,which can increase the accumulation of drugs and prolong their tumor retention time,providing a feasible strategy for realizing the delivery of small-molecule hydrophobic drugs and tumor PDT.
基金supported by the National Natural Science Foundation of China(22171001,22305001,51972001,52372073)the Natural Science Foundation of Anhui Province of China(2108085MB49).
文摘The realization of real-time thermal feedback for monitoring photothermal therapy(PTT)under near-infrared(NIR)light irradiation is of great interest and challenge for antitumor therapy.Herein,by assembling highly efficient photothermal conversion gold nanorods and a temperature-responsive probe((E)-4-(4-(diethylamino)styryl)-1-methylpyridin-1-ium,PyS)within MOF-199,an intelligent nanoplatform(AMPP)was fabricated for simultaneous chemodynamic therapy and NIR light-induced temperature-feedback PTT.The fluorescence intensity and temperature of the PyS probe are linearly related due to the restriction of the rotation of the characteristic monomethine bridge.Moreover,the copper ions resulting from the degradation of MOF-199 in an acidic microenvironment can convert H_(2)O_(2)into•OH,resulting in tumor ablation through a Fenton-like reaction,and this process can be accelerated by increasing the temperature.This study establishes a feasible platform for fabricating highly sensitive temperature sensors for efficient temperature-feedback PTT.
文摘Corrole,a representative branch of porphyrin,has recently gained popularity.These molecules,viewed as ring‑contracted porphyrinoids containing direct pyrrole‑pyrrole linkages due to the absence of a meso‑carbon atom,exhibit significant photo‑physicochemical properties that make them attractive for various applications.Herein,this review comprehensively discusses the remarkable properties of corrole complexes,as well as related structures and chelation properties.It further explores the biological applications of corrole complexes for in vivo imaging and anticancer therapy.Additionally,it addresses common research bottlenecks and challenges,providing insights into future potential applications in disease diagnosis and treatment.Generally,this review aims to illuminate the significance of corrole complexes and their promising biological applications.
文摘通过检索PubMed、Web of Science、中国知网和万方等数据库,对近年来发表的有关扁平足在生物力学上的成因和治疗方法的相关内容进行综述。其中,扁平足的形成原因包括先天性因素和后天性因素,而治疗方法主要有矫形鞋垫、物理疗法、手术治疗和运动疗法。这些方法在一定程度上能够纠正足部结构异常,优化生物力学性能,提高足部的稳定性和活动范围。对于未来的研究,将利用先进的影像和仿真技术进行精确的病情评估,新型材料和非手术疗法的应用将能够长期缓解症状,而基因研究将推动早期诊断和个性化治疗的发展,智能矫形器的使用将实现实时监测和动态调整,从而为扁平足的评估、干预和治疗提供更多更有效的方法和手段。
