Perfluorocarbon Nanodroplets for Active Local Drug Delivery and Real-Time Ultrasound/Fluorescence Imaging Guided Synergistic Chemo-Photothermal Therapy

2020 ◽  
Author(s):  
Danli Sheng ◽  
Liming Deng ◽  
Pan Li ◽  
Haitao Ran ◽  
Zhigang Wang ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Real Time ◽  
Fluorescence Imaging ◽  
Photothermal Therapy ◽  
Local Drug Delivery

Lanthanide-doped upconversion nanoparticles complexed with nano-oxide graphene used for upconversion fluorescence imaging and photothermal therapy

2018 ◽  
Vol 6 (4) ◽  
pp. 877-884 ◽  
Author(s):  
Po Li ◽  
Yue Yan ◽  
Binlong Chen ◽  
Pan Zhang ◽  
Siling Wang ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Fluorescence Imaging ◽  
Photothermal Therapy ◽  
Biomedical Applications ◽  
Drug Delivery Systems ◽  
Delivery Systems ◽  
Research Interest ◽  
Upconversion Nanoparticles ◽  
Multifunctional Nanoparticles ◽  
Nano Oxide

In recent years, multifunctional nanoparticles have attracted much research interest in various biomedical applications such as biosensors, diagnosis, and drug delivery systems.

scholarly journals Gadolinium and Platinum in Tandem: Real-time Multi-Modal Monitoring of Drug Delivery by MRI and Fluorescence Imaging

2017 ◽  
Vol 1 (2) ◽  
pp. 186-195 ◽  
Author(s):  
Hongguang Li ◽  
Bethany I. Harriss ◽  
Alkystis Phinikaridou ◽  
Sara Lacerda ◽  
Gregory Ramniceanu ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Real Time ◽  
Fluorescence Imaging

scholarly journals Mitochondria-targeting Graphene Oxide Nanocomposites for Fluorescence Imaging-guided Synergistic Phototherapy of Drug-resistant Osteosarcoma

2021 ◽  
Author(s):  
Wei-Nan Zeng ◽  
Qiu-Ping Yu ◽  
Duan Wang ◽  
Jun-Li Liu ◽  
Qing-Jun Yang ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Fluorescence Imaging ◽  
Drug Delivery System ◽  
Delivery System ◽  
Photothermal Therapy ◽  
Near Infrared ◽  
Drug Resistant ◽  
Tumor Cell Death ◽  
Mitochondria Targeting

Abstract Background: Osteosarcoma (OS) is the most common primary malignant bone tumor occurring in children and young adults. Drug-resistant osteosarcoma often results in chemotherapy failure. Therefore, new treatments aimed at novel therapeutic targets are urgently needed for the treatment of Drug-resistant osteosarcoma. Mitochondria-targeted phototherapy, i.e., synergistic photodynamic/photothermal therapy, has emerged as a highly promising strategy for treating drug-resistant tumors. This study proposed a new nano-drug delivery system based on near-infrared imaging and multifunctional graphene, which can target mitochondria and show synergistic phototherapy, with preferential accumulation in tumors.Methods and Results: Based on our previous study, (4-carboxybutyl) triphenyl phosphonium bromide (TPP), a mitochondria-targeting ligand, was conjugated to indocyanine green (ICG)-loaded, polyethylenimine-modified PEGylated nanographene oxide sheets (TPP-PPG@ICG) to promote mitochondrial accumulation after cellular internalization. Thereafter, exposure to a single dose of near-infrared irradiation enabled synergistic photodynamic and photothermal therapy, which simultaneously inhibited adenosine triphosphate synthesis and mitochondrial function. Induction of intrinsic apoptosis assisted in surmounting drug resistance and caused tumor cell death. After fluorescence imaging-guided synergistic phototherapy, the mitochondria-targeting, multifunctional graphene-based, drug-delivery system showed highly selective anticancer efficiency in vitro and in vivo, resulting in marked inhibition of tumor progression without noticeable toxicity in mice bearing doxorubicin-resistant MG63 tumor cells. Conclusion: The mitochondria-targeting TPP-PPG@ICG nanocomposite constitutes a new class of nanomedicine for fluorescence imaging-guided synergistic phototherapy and shows promise for treating drug-resistant osteosarcoma.

Retention and Transport of Hydrophobic and Hydrophilic Drug Surrogate Molecules in Coronary Arteries Measured Nondestructively With Photoacoustic Ultrasound

2013 ◽  
Author(s):  
Joseph T. Keyes ◽  
Leonardo G. Montilla ◽  
Russel S. Witte ◽  
Jonathan P. Vande Geest
Keyword(s):  
Drug Delivery ◽  
Real Time ◽  
Coronary Arteries ◽  
Local Drug Delivery ◽  
Drug Eluting Stents ◽  
Systemic Effects ◽  
Chemical Polarization ◽  
Design And Implementation ◽  
Hydrophilic Drug ◽  
Drug Eluting

The design and implementation of local drug delivery mechanisms in cardiovascular applications provides a method by which localized action can occur without potentially problematic systemic effects. This has been especially relevant in the case of drug-eluting stents (DESs). It has been previously shown that the degree of chemical polarization can significantly change the degree of transport and the degree of vascular retention of drugs. Understanding how these differences occur in real-time, and nondestructively, can better help guide the design of such pharmaceuticals. Previous work by our laboratory has indicated differences in transport based on location within the coronary tree (Fig. 1) [1].

scholarly journals Mitochondria-targeting graphene oxide nanocomposites for fluorescence imaging-guided synergistic phototherapy of drug-resistant osteosarcoma

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Wei-Nan Zeng ◽  
Qiu-Ping Yu ◽  
Duan Wang ◽  
Jun-Li Liu ◽  
Qing-Jun Yang ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Fluorescence Imaging ◽  
Drug Delivery System ◽  
Delivery System ◽  
Photothermal Therapy ◽  
Near Infrared ◽  
Drug Resistant ◽  
Tumor Cell Death ◽  
Mitochondria Targeting

Abstract Background Osteosarcoma (OS) is the most common primary malignant bone tumor occurring in children and young adults. Drug-resistant osteosarcoma often results in chemotherapy failure. Therefore, new treatments aimed at novel therapeutic targets are urgently needed for the treatment of drug-resistant osteosarcoma. Mitochondria-targeted phototherapy, i.e., synergistic photodynamic/photothermal therapy, has emerged as a highly promising strategy for treating drug-resistant tumors. This study proposed a new nano-drug delivery system based on near-infrared imaging and multifunctional graphene, which can target mitochondria and show synergistic phototherapy, with preferential accumulation in tumors. Methods and results Based on our previous study, (4-carboxybutyl) triphenyl phosphonium bromide (TPP), a mitochondria-targeting ligand, was conjugated to indocyanine green (ICG)-loaded, polyethylenimine-modified PEGylated nanographene oxide sheets (TPP-PPG@ICG) to promote mitochondrial accumulation after cellular internalization. Thereafter, exposure to a single dose of near-infrared irradiation enabled synergistic photodynamic and photothermal therapy, which simultaneously inhibited adenosine triphosphate synthesis and mitochondrial function. Induction of intrinsic apoptosis assisted in surmounting drug resistance and caused tumor cell death. After fluorescence imaging-guided synergistic phototherapy, the mitochondria-targeting, multifunctional graphene-based, drug-delivery system showed highly selective anticancer efficiency in vitro and in vivo, resulting in marked inhibition of tumor progression without noticeable toxicity in mice bearing doxorubicin-resistant MG63 tumor cells. Conclusion The mitochondria-targeting TPP-PPG@ICG nanocomposite constitutes a new class of nanomedicine for fluorescence imaging-guided synergistic phototherapy and shows promise for treating drug-resistant osteosarcoma.

scholarly journals Real-time fluorescence imaging for visualization and drug uptake prediction during drug delivery by thermosensitive liposomes

2019 ◽  
Vol 36 (1) ◽  
pp. 816-825 ◽  
Author(s):  
Anjan Motamarry ◽  
Ayele H. Negussie ◽  
Christian Rossmann ◽  
James Small ◽  
A. Marissa Wolfe ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Real Time ◽  
Fluorescence Imaging ◽  
Drug Uptake ◽  
Thermosensitive Liposomes

Fabrication of Small Multifunctional CuS Nanoclusters for Fluorescence Imaging and Chemo-Photothermal Therapy of Cancer

NANO ◽  
2020 ◽  
Vol 15 (09) ◽  
pp. 2050123
Author(s):  
Yanqiu Zhao ◽  
Yang Zou ◽  
Xunxun Deng ◽  
Hanwen Wang ◽  
Shuo Wu
Keyword(s):  
Hyaluronic Acid ◽  
Real Time ◽  
Tumor Cells ◽  
Fluorescence Imaging ◽  
Photothermal Therapy ◽  
Colloid Stability ◽  
Ph Responsive ◽  
Ha Coating ◽  
Promising Application ◽  
Real Time Tracking

A multifunctional nanodrug, PAMAM@CuS-HA-RB/DOX, was prepared for the real time tracking and chemo-photothermal therapy of tumor cells. The CuS nanoclusters with diameter less than 10[Formula: see text]nm could be easily ingested by tumor cells and showed good colloid stability and high photothermal conversion efficiency. The hyaluronic acid (HA) coating and rhodamine B (RB) labeling endowed the nanocomposite with low cytotoxity and real time fluorescence imaging ability. In the acidic tumor microenvironment, the doxorubicin linked via the pH-responsive hydrazone bonds was released and worked synergistically with CuS to kill the tumor cells, which showed a high chemo-photothermal therapy capacity. All these properties indicated the PAMAM@CuS-HA-RB/DOX have promising application for the therapy of cancers and tracking of nanodrugs.

Modern Possibilities of Organ-Preserving Treatment in Children with Intraocular Retinoblastoma

2018 ◽  
Vol 5 (3) ◽  
pp. 175-187 ◽  
Author(s):  
O. V. Gorovtsova ◽  
T. L. Ushakova ◽  
V. G. Polyakov
Keyword(s):  
Drug Delivery ◽  
Survival Rate ◽  
Cancer Therapy ◽  
Neoadjuvant Chemotherapy ◽  
Patient Survival ◽  
Focal Therapy ◽  
Local Drug Delivery ◽  
Large Size ◽  
Intraocular Retinoblastoma

Retinoblastoma is one of highly curable diseases; today the total 5-year survival rate in patients with retinoblastoma exceeds 95%. The article summarizes the current world experience on treatment of patients with intraocular retinoblastoma. The treating skills of intraocular malignant tumor in children are a balance between the patient’s life and the preservation of an eye and its visual functions. The complex and challenging task is the treatment of common intraocular retinoblastoma groups «C», «D», «E» when the large size or localization of the tumor does not allow performing the local (focal) destruction of the tumor. As a rule, in such cases neoadjuvant chemotherapy (CT) is performed at the first stage in order to reduce the size of the tumor for further focal therapy. However, the analysed data on the effectiveness of neoadjuvant CT in combination with focal or radiotherapy demonstrated the limited possibilities of the proposed therapy. Local drug delivery in cancer therapy became a real breakthrough in the organ-preserving treatment of children with large intraocular retinoblastoma. The most widely used current methods of local drug delivery are intravitreal (IVitC) and selective intra-arterial chemotherapy (SIAC) as monotherapy or in combination with neoadjuvant CT and focal therapy which significantly increased the percentage of preserved eyes without radiotherapy administration or damage to the patient survival. The review discusses the different IVitC and SIAC techniques, chemotherapy schemes, dosages of chemotherapy, immediate and long-term complications of treatment.

Recent In Vitro and In Silico Advances in the Understanding of Intranasal Drug Delivery

2020 ◽  
Vol 26 ◽  
Author(s):  
John Chen ◽  
Andrew Martin ◽  
Warren H. Finlay
Keyword(s):  
Drug Delivery ◽  
In Silico ◽  
Local Drug Delivery ◽  
In Vivo Studies ◽  
Intranasal Drug Delivery ◽  
Nasal Sprays ◽  
In Silico Studies ◽  
Drug Delivery Devices

Background: Many drugs are delivered intranasally for local or systemic effect, typically in the form of droplets or aerosols. Because of the high cost of in vivo studies, drug developers and researchers often turn to in vitro or in silico testing when first evaluating the behavior and properties of intranasal drug delivery devices and formulations. Recent advances in manufacturing and computer technologies have allowed for increasingly realistic and sophisticated in vitro and in silico reconstructions of the human nasal airways. Objective: To perform a summary of advances in understanding of intranasal drug delivery based on recent in vitro and in silico studies. Conclusion: The turbinates are a common target for local drug delivery applications, and while nasal sprays are able to reach this region, there is currently no broad consensus across the in vitro and in silico literature concerning optimal parameters for device design, formulation properties and patient technique which would maximize turbinate deposition. Nebulizers are able to more easily target the turbinates, but come with the disadvantage of significant lung deposition. Targeting of the olfactory region of the nasal cavity has been explored for potential treatment of central nervous system conditions. Conventional intranasal devices, such as nasal sprays and nebulizers, deliver very little dose to the olfactory region. Recent progress in our understanding of intranasal delivery will be useful in the development of the next generation of intranasal drug delivery devices.

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