scholarly journals Near-Infrared Triggered Decomposition of Nanocapsules with High Tumor Accumulation and Stimuli Responsive Fast Elimination

2018 ◽  
Vol 130 (10) ◽  
pp. 2641-2645 ◽  
Author(s):  
Tiancong Zhao ◽  
Peiyuan Wang ◽  
Qin Li ◽  
Areej Abdulkareem Al-Khalaf ◽  
Wael N. Hozzein ◽  
...  
Keyword(s):  
Near Infrared ◽  
Stimuli Responsive ◽  
Tumor Accumulation

scholarly journals Near-Infrared Triggered Decomposition of Nanocapsules with High Tumor Accumulation and Stimuli Responsive Fast Elimination

2018 ◽  
Vol 57 (10) ◽  
pp. 2611-2615 ◽  
Author(s):  
Tiancong Zhao ◽  
Peiyuan Wang ◽  
Qin Li ◽  
Areej Abdulkareem Al-Khalaf ◽  
Wael N. Hozzein ◽  
...  
Keyword(s):  
Near Infrared ◽  
Stimuli Responsive ◽  
Tumor Accumulation

scholarly journals Magnetic tri-bead microrobot assisted near-infrared triggered combined photothermal and chemotherapy of cancer cells

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Xiaoxia Song ◽  
Zhi Chen ◽  
Xue Zhang ◽  
Junfeng Xiong ◽  
Teng Jiang ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Drug Delivery ◽  
Cancer Cells ◽  
Photothermal Therapy ◽  
Near Infrared ◽  
Stimuli Responsive ◽  
Lung Cancer Cell ◽  
Precise Movement ◽  
Photothermal Property

AbstractMagnetic micro/nanorobots attracted much attention in biomedical fields because of their precise movement, manipulation, and targeting abilities. However, there is a lack of research on intelligent micro/nanorobots with stimuli-responsive drug delivery mechanisms for cancer therapy. To address this issue, we developed a type of strong covalently bound tri-bead drug delivery microrobots with NIR photothermal response azobenzene molecules attached to their carboxylic surface groups. The tri-bead microrobots are magnetic and showed good cytocompatibility even when their concentration is up to 200 µg/mL. In vitro photothermal experiments demonstrated fast NIR-responsive photothermal property; the microrobots were heated to 50 °C in 4 min, which triggered a significant increase in drug release. Motion control of the microrobots inside a microchannel demonstrated the feasibility of targeted therapy on tumor cells. Finally, experiments with lung cancer cells demonstrated the effectiveness of targeted chemo-photothermal therapy and were validated by cell viability assays. These results indicated that tri-bead microrobots have excellent potential for targeted chemo-photothermal therapy for lung cancer cell treatment.

Subtle changes in network composition impact the biodistribution and tumor accumulation of nanogels

2018 ◽  
Vol 54 (83) ◽  
pp. 11777-11780 ◽  
Author(s):  
Ilona Zilkowski ◽  
Ioanna Theodorou ◽  
Krystyna Albrecht ◽  
Frederic Ducongé ◽  
Jürgen Groll
Keyword(s):  
Breast Tumor ◽  
Tumor Targeting ◽  
Near Infrared ◽  
Side Chain ◽  
Human Breast ◽  
Human Breast Tumor ◽  
Tumor Xenografts ◽  
Network Composition ◽  
Tumor Accumulation

We studied the effect of subtle changes in side-chain chemistry and labelling with near infrared fluorophores of nanogels (NGs) prepared from thiolated poly(glycidol) on in vivo biodistribution in mice bearing human breast tumor xenografts. Side chain chemistry as well as labelling clearly influenced tumor targeting and overall biodistribution.

Near-Infrared Emitting Dual-Stimuli-Responsive Carbon Dots from Endogenous Bile Pigments

Nanoscale ◽  
2021 ◽  
Author(s):  
Parinaz Fathi ◽  
Parikshit Moitra ◽  
Madeleine M. McDonald ◽  
Mandy Brigitte Esch ◽  
Dipanjan Pan
Keyword(s):  
Surface Modification ◽  
Carbon Dots ◽  
Biomedical Applications ◽  
Near Infrared ◽  
Bile Pigments ◽  
Careful Selection ◽  
Stimuli Responsive ◽  
Carbon Dot ◽  
Surface Modification Techniques ◽  
Selection Of

Carbon dots are biocompatible nanoparticles suitable for a variety of biomedical applications. Careful selection of carbon dot precursors and surface modification techniques has allowed for the development of carbon dots...

scholarly journals Biodegradable Micelles for NIR/GSH-Triggered Chemophototherapy of Cancer

Nanomaterials ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 91 ◽  
Author(s):  
Chuan Zhang ◽  
Yuzhuo Wang ◽  
Yue Zhao ◽  
Hou Liu ◽  
Yueqi Zhao ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Near Infrared ◽  
Mixed Micelles ◽  
Infrared Light ◽  
Stimuli Responsive ◽  
High Concentration ◽  
Chemotherapy Drugs ◽  
In Vivo Experiments ◽  
Low Efficiency

The chemotherapy of stimuli-responsive drug delivery systems (SDDSs) is a promising method to enhance cancer treatment effects. However, the low efficiency of chemotherapy drugs and poor degradation partly limit the application of SDDSs. Herein, we report doxorubicin (DOX)-loading mixed micelles for biotin-targeting drug delivery and enhanced photothermal/photodynamic therapy (PTT/PDT). Glutathione (GSH)-responsive mixed micelles were prepared by a dialysis method, proportionally mixing polycaprolactone-disulfide bond-biodegradable photoluminescent polymer (PCL-SS-BPLP) and biotin-polyethylene glycol-cypate (biotin-PEG-cypate). Chemically linking cypate into the mixed micelles greatly improved cypate solubility and PTT/PDT effect. The micelles also exhibited good monodispersity and stability in cell medium (~119.7 nm), low critical micelles concentration, good biodegradation, and photodecomposition. The high concentration of GSH in cancer cells and near-infrared light (NIR)-mediated cypate decomposition were able to achieve DOX centralized release. Meanwhile, the DOX-based chemotherapy combined with cypate-based NIR-triggered hyperthermia and reactive oxygen species could synergistically induce HepG2 cell death and apoptosis. The in vivo experiments confirmed that the micelles generated hyperthermia and achieved a desirable therapeutic effect. Therefore, the designed biodegradable micelles are promising safe nanovehicles for antitumor drug delivery and chemo/PTT/PDT combination therapy.

scholarly journals Visible and infrared three-wavelength modulated multi-directional actuators

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Bo Zuo ◽  
Meng Wang ◽  
Bao-Ping Lin ◽  
Hong Yang
Keyword(s):  
Near Infrared ◽  
Light Stimulus ◽  
Stimuli Responsive ◽  
Liquid Crystal Elastomer ◽  
Shape Morphing ◽  
Actuation System ◽  
Directional Movement ◽  
Actuator System ◽  
Soft Actuators ◽  
Scientific Attention

Abstract In recent years, light-guided robotic soft actuators have attracted intense scientific attention and rapidly developed, although it still remains challenging to precisely and reversibly modulate the moving directions and shape morphing modes of soft actuators with ease of stimulating operation. Here we report a strategy of building a multi-stimuli-responsive liquid crystal elastomer soft actuator system capable of performing not only multi-directional movement, but also different shape morphing modes. This strategy is based on the selective stimulation of specific domains of the hierarchical structured actuator through the modulation of three wavelength bands (520, 808, 980 nm) of light stimulus, which release the actuation system from light scanning position/direction restriction. Three near-infrared dual-wavelength modulated actuators and one visible/infrared tri-wavelength modulated multi-directional walker robot are demonstrated in this work. These devices have broad application prospects in robotic and biomimetic technology.

A near-infrared fluorescent heptamethine indocyanine dye with preferential tumor accumulation for in vivo imaging

Biomaterials ◽  
2010 ◽  
Vol 31 (25) ◽  
pp. 6612-6617 ◽  
Author(s):  
Chao Zhang ◽  
Tao Liu ◽  
Yongping Su ◽  
Shenglin Luo ◽  
Ying Zhu ◽  
...  
Keyword(s):  
In Vivo Imaging ◽  
Near Infrared ◽  
Tumor Accumulation

A methyl ketone bridged molecule as a multi-stimuli-responsive color switch for electrochromic devices

2016 ◽  
Vol 4 (21) ◽  
pp. 4662-4667 ◽  
Author(s):  
Yu-Mo Zhang ◽  
Fuli Xie ◽  
Wen Li ◽  
Yuyang Wang ◽  
Weiran Zhang ◽  
...  
Keyword(s):  
Near Infrared ◽  
Methyl Ketone ◽  
Molecular Switch ◽  
Electrochromic Device ◽  
Stimuli Responsive ◽  
Electrochromic Devices

A new multi-stimuli-responsive molecular switch M5 with a methyl ketone bridge has been developed to fabricate a visible-near infrared absorbing electrochromic device.

scholarly journals PRELIMINARY STRUCTURE–ACTIVITY RELATIONSHIP STUDY OF HEPTAMETHINE INDOCYANINE DYES FOR TUMOR-TARGETED IMAGING

2013 ◽  
Vol 06 (01) ◽  
pp. 1350003 ◽  
Author(s):  
QINYUAN GUO ◽  
SHENGLIN LUO ◽  
QINGRONG QI ◽  
CHUNMENG SHI
Keyword(s):  
In Vivo Imaging ◽  
Near Infrared ◽  
Structure Activity Relationship ◽  
Activity Relationship ◽  
Targeted Imaging ◽  
Structure Activity ◽  
Relationship Study ◽  
Tumor Accumulation ◽  
Sar Study

Our research has identified a couple of near-infrared (NIR) heptamethine indocyanine dyes exhibiting preferential tumor accumulation property for in vivo imaging. On the basis of our foregoing work, we describe here a preliminary structure–activity relationship (SAR) study of 11 related heptamethine indocyanine dyes and several essential requirements of these structures for in vivo tumor-targeted imaging.

scholarly journals Stimuli-Responsive Nanofibers Containing Gold Nanorods for On-Demand Drug Delivery Platforms

Pharmaceutics ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1319
Author(s):  
Baljinder Singh ◽  
Nutan Shukla ◽  
Junkee Kim ◽  
Kibeom Kim ◽  
Myoung-Hwan Park
Keyword(s):  
Drug Delivery ◽  
Drug Release ◽  
Gold Nanorods ◽  
Drug Delivery Systems ◽  
Near Infrared ◽  
Resonance Effect ◽  
Delivery Systems ◽  
Stimuli Responsive ◽  
On Demand ◽  
Multiple Drugs

On-demand drug delivery systems using nanofibers have attracted significant attention owing to their controllable properties for drug release through external stimuli. Near-infrared (NIR)-responsive nanofibers provide a platform where the drug release profile can be achieved by the on-demand supply of drugs at a desired dose for cancer therapy. Nanomaterials such as gold nanorods (GNRs) exhibit absorbance in the NIR range, and in response to NIR irradiation, they generate heat as a result of a plasmon resonance effect. In this study, we designed poly (N-isopropylacrylamide) (PNIPAM) composite nanofibers containing GNRs. PNIPAM is a heat-reactive polymer that provides a swelling and deswelling property to the nanofibers. Electrospun nanofibers have a large surface-area-to-volume ratio, which is used to effectively deliver large quantities of drugs. In this platform, both hydrophilic and hydrophobic drugs can be introduced and manipulated. On-demand drug delivery systems were obtained through stimuli-responsive nanofibers containing GNRs and PNIPAM. Upon NIR irradiation, the heat generated by the GNRs ensures shrinking of the nanofibers owing to the thermal response of PNIPAM, thereby resulting in a controlled drug release. The versatility of the light-responsive nanofibers as a drug delivery platform was confirmed in cell studies, indicating the advantages of the swelling and deswelling property of the nanofibers and on–off drug release behavior with good biocompatibility. In addition, the system has potential for the combination of chemotherapy with multiple drugs to enhance the effectiveness of complex cancer treatments.

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