scholarly journals Near-IR-induced dissociation of thermally-sensitive star polymers

2017 ◽  
Vol 8 (3) ◽  
pp. 1815-1821 ◽  
Author(s):  
Yuqiong Dai ◽  
Hao Sun ◽  
Sunirmal Pal ◽  
Yunlu Zhang ◽  
Sangwoo Park ◽  
...  
Keyword(s):  
Near Infrared ◽  
Star Polymers ◽  
Tissue Penetration ◽  
Triggered Release ◽  
Deep Tissue ◽  
Responsive Systems ◽  
Nir Light ◽  
Near Ir ◽  
Triggering Events ◽  
Spatiotemporal Control

Responsive systems sensitive to near-infrared (NIR) light are promising for triggered release due to efficient deep tissue penetration of NIR irradiation relative to higher energy sources (e.g., UV), allowing for spatiotemporal control over triggering events with minimal potential for tissue damage.

Fluorescein-Inspired Near-Infrared Chemodosimeter for Luminescence Bioimaging

2019 ◽  
Vol 26 (21) ◽  
pp. 4029-4041 ◽  
Author(s):  
Hai-Yan Wang ◽  
Huisheng Zhang ◽  
Siping Chen ◽  
Yi Liu
Keyword(s):  
Near Infrared ◽  
Living System ◽  
Tissue Penetration ◽  
Deep Tissue ◽  
Biological Targets ◽  
Nir Dyes ◽  
Photo Damage ◽  
Temporal And Spatial

Luminescence bioimaging is widely used for noninvasive monitoring of biological targets in real-time with high temporal and spatial resolution. For efficient bioimaging in vivo, it is essential to develop smart organic dye platforms. Fluorescein (FL), a traditional dye, has been widely used in the biological and clinical studies. However, visible excitation and emission limited their further application for in vivo bioimaging. Nearinfrared (NIR) dyes display advantages of bioimaging because of their minimum absorption and photo-damage to biological samples, as well as deep tissue penetration and low auto-luminescence from background in the living system. Thus, some great developments of near-infrared fluorescein-inspired dyes have emerged for bioapplication in vitro and in vivo. In this review, we highlight the advances in the development of the near-infrared chemodosimeters for detection and bioimaging based on the modification of fluoresceininspired dyes naphtho-fluorescein (NPF) and cyanine-fluorescein (Cy-FL).

Acceptor Engineering of Small Molecule Fluorophores for NIR-II Fluorescent and NIR-I Photoacoustic Imaging

2021 ◽  
Author(s):  
Yaxi Li ◽  
Hongli Zhou ◽  
Renzhe Bi ◽  
Xiuting Li ◽  
Menglei Zha ◽  
...  
Keyword(s):  
Fluorescence Imaging ◽  
Small Molecule ◽  
Near Infrared ◽  
Photoacoustic Imaging ◽  
High Sensitivity ◽  
Tissue Penetration ◽  
Deep Tissue ◽  
Infrared Window

Fluorescence imaging in the second near-infrared window (NIR-II) has been an emerging technique in diverse in vivo applications with high sensitivity/resolution and deep tissue penetration. To date, the designing principle...

scholarly journals Deep-Tissue Photothermal Therapy Using Laser Illumination at NIR-IIa Window

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Xunzhi Wu ◽  
Yongkuan Suo ◽  
Hui Shi ◽  
Ruiqi Liu ◽  
Fengxia Wu ◽  
...  
Keyword(s):  
Photothermal Therapy ◽  
Near Infrared ◽  
Laser Excitation ◽  
Tumor Treatment ◽  
Deep Tissue ◽  
Laser Illumination ◽  
Nir Light ◽  
Cell Ablation

Abstract Photothermal therapy (PTT) using near-infrared (NIR) light for tumor treatment has triggered extensive attentions because of its advantages of noninvasion and convenience. The current research on PTT usually uses lasers in the first NIR window (NIR-I; 700–900 nm) as irradiation source. However, the second NIR window (NIR-II; 1000–1700 nm) especially NIR-IIa window (1300–1400 nm) is considered much more promising in diagnosis and treatment as its superiority in penetration depth and maximum permissible exposure over NIR-I window. Hereby, we propose the use of laser excitation at 1275 nm, which is approved by Food and Drug Administration for physical therapy, as an attractive technique for PTT to balance of tissue absorption and scattering with water absorption. Specifically, CuS-PEG nanoparticles with similar absorption values at 1275 and 808 nm, a conventional NIR-I window for PTT, were synthesized as PTT agents and a comparison platform, to explore the potential of 1275 and 808 nm lasers for PTT, especially in deep-tissue settings. The results showed that 1275 nm laser was practicable in PTT. It exhibited much more desirable outcomes in cell ablation in vitro and deep-tissue antitumor capabilities in vivo compared to that of 808 nm laser. NIR-IIa laser illumination is superior to NIR-I laser for deep-tissue PTT, and shows high potential to improve the PTT outcome.

scholarly journals The Use of Upconversion Nanoparticles in Prostate Cancer Photodynamic Therapy

Life ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 360
Author(s):  
Michał Osuchowski ◽  
Filip Osuchowski ◽  
Wojciech Latos ◽  
Aleksandra Kawczyk-Krupka
Keyword(s):  
Prostate Cancer ◽  
Photodynamic Therapy ◽  
Near Infrared ◽  
Diagnostic Methods ◽  
Infrared Light ◽  
Upconversion Nanoparticles ◽  
Tissue Penetration ◽  
Deep Tissue ◽  
Visible Wavelengths ◽  
Intense Research

Photodynamic Therapy (PDT) is a cancer treatment that uses light, a photosensitizer, and oxygen to destroy tumors. This article is a review of approaches to the treatment of prostate cancer applying upconversion nanoparticles (UCNPs). UCNPs have become a phenomenon that are rapidly gaining recognition in medicine. They have proven to be highly selective and specific and present a powerful tool in the diagnosis and treatment of prostate cancer. Prostate cancer is a huge health problem in Western countries. Its early detection can significantly improve patients’ prognosis, but currently used diagnostic methods leave much to be desired. Recently developed methodologies regarding UCNP research between the years 2021 and 2014 for prostate cancer PDT will also be discussed. Current limitations in PDT include tissue irradiation with visible wavelengths that have a short tissue penetration depth. PDT with the objectives to synthesize UCNPs composed of a lanthanide core with a coating of adsorbed dye that will generate fluorescence after excitation with near-infrared light to illuminate deep tissue is a subject of intense research in prostate cancer.

scholarly journals Real time monitoring of aminothiol level in blood using a near-infrared dye assisted deep tissue fluorescence and photoacoustic bimodal imaging

2016 ◽  
Vol 7 (7) ◽  
pp. 4110-4116 ◽  
Author(s):  
Palapuravan Anees ◽  
James Joseph ◽  
Sivaramapanicker Sreejith ◽  
Nishanth Venugopal Menon ◽  
Yuejun Kang ◽  
...  
Keyword(s):  
Real Time ◽  
Near Infrared ◽  
Real Time Monitoring ◽  
Deep Tissue ◽  
Near Ir ◽  
Bimodal Imaging ◽  
Tissue Fluorescence ◽  
Near Infrared Dye

Real time monitoring of blood aminothiol level by a near-IR dye assisted fluorescence–photoacoustic bimodal imaging is reported.

Polyoxomolybdate (POM) nanoclusters with radiosensitizing and scintillating properties for low dose X-ray inducible radiation-radiodynamic therapy

2020 ◽  
Vol 5 (1) ◽  
pp. 109-118 ◽  
Author(s):  
Debabrata Maiti ◽  
Jing Zhong ◽  
Zheng Zhang ◽  
Hailin Zhou ◽  
Saisai Xion ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Light Source ◽  
Low Dose ◽  
Near Infrared ◽  
Infrared Light ◽  
X Rays ◽  
Tissue Penetration ◽  
Deep Tissue ◽  
X Ray ◽  
Therapeutic Efficiency

X-rays with high deep tissue penetration could be acted as an excellent excited light source for enhanced photodynamic therapy (PDT), avoiding the weak penetration of near-infrared light and further improving the therapeutic efficiency of PDT.

scholarly journals A targeted near-infrared nanoprobe for deep-tissue penetration and imaging of prostate cancer

2021 ◽  
Author(s):  
Mena Asha Krishnan ◽  
Kratika Yadav ◽  
Paul Roach ◽  
Venkatesh Chelvam
Keyword(s):  
Prostate Cancer ◽  
Near Infrared ◽  
Imaging Agent ◽  
Tissue Penetration ◽  
Deep Tissue

Deep tissue penetration of a NIR PSMA-QD655 imaging agent in a 3D prostate cancer platform has been achieved.

scholarly journals Imparting multi-functionality to covalent organic framework nanoparticles by the dual-ligand assistant encapsulation strategy

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Liang Chen ◽  
Wenxing Wang ◽  
Jia Tian ◽  
Fanxing Bu ◽  
Tiancong Zhao ◽  
...  
Keyword(s):  
Near Infrared ◽  
Core Shell ◽  
Tissue Penetration ◽  
Deep Tissue ◽  
Functional Nanoparticles ◽  
The Core ◽  
Shell Nanostructures ◽  
Potential Applications ◽  
Interfacial Growth ◽  
Promising Type

AbstractThe potential applications of covalent organic frameworks (COFs) can be further developed by encapsulating functional nanoparticles within the frameworks. However, the synthesis of monodispersed core@shell structured COF nanocomposites without agglomeration remains a significant challenge. Herein, we present a versatile dual-ligand assistant strategy for interfacial growth of COFs on the functional nanoparticles with abundant physicochemical properties. Regardless of the composition, geometry or surface properties of the core, the obtained core@shell structured nanocomposites with controllable shell-thickness are very uniform without agglomeration. The derived bowl-shape, yolk@shell, core@satellites@shell nanostructures can also be fabricated delicately. As a promising type of photosensitizer for photodynamic therapy (PDT), the porphyrin-based COFs were grown onto upconversion nanoparticles (UCNPs). With the assistance of the near-infrared (NIR) to visible optical property of UCNPs core and the intrinsic porosity of COF shell, the core@shell nanocomposites can be applied as a nanoplatform for NIR-activated PDT with deep tissue penetration and chemotherapeutic drug delivery.

Application of lanthanide-doped upconversion nanoparticles for cancer treatment: a review

Nanomedicine ◽  
2021 ◽  
Author(s):  
Yu-Qi Liu ◽  
Li-Ying Qin ◽  
Hong-Jiao Li ◽  
Yi-Xi Wang ◽  
Rui Zhang ◽  
...  
Keyword(s):  
Cancer Treatment ◽  
Photothermal Therapy ◽  
Near Infrared ◽  
Uv Light ◽  
Infrared Light ◽  
Upconversion Nanoparticles ◽  
Tissue Penetration ◽  
Deep Tissue ◽  
Chemotherapy Drugs ◽  
New Ideas

With the excellent ability to transform near-infrared light to localized visible or UV light, thereby achieving deep tissue penetration, lanthanide ion-doped upconversion nanoparticles (UCNP) have emerged as one of the most striking nanoscale materials for more effective and safer cancer treatment. Up to now, UCNPs combined with photosensitive components have been widely used in the delivery of chemotherapy drugs, photodynamic therapy and photothermal therapy. Applications in these directions are reviewed in this article. We also highlight microenvironmental tumor monitoring and precise targeted therapies. Then we briefly summarize some new trends and the existing challenges for UCNPs. We hope this review can provide new ideas for future cancer treatment based on UCNPs.

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