Tuesday, October 1, 2013
To confirm whether their activation is related to IR cell in
Emphasizing imaging alone without therapy functionality will not be the primary point of the report, and such discussions are available in several excellent reviews. 2,3 Instead, the development and design of theranostic agents, especially from the chemistry point of view, and possible applications will be discussed Cyclopamine and addressed herein. Gold based nanomaterials Because of the superior bio-compatibility and more developed strategies for surface modification, gold based nanomaterials have been investigated as multifunctional probes. The initial visual and photothermal characteristics of gold nanomaterials enable them not only to be reproduced as sensing resources but in addition to induce photothermal effects for therapeutic purposes.
The localized surface plasmon resonance of gold nanomaterials can be adjusted by tuning their morphology; gold nanorod, NP, nanoshell, and nanocage demonstrate exclusive optical and thermal properties, which can readily upgrade gold nanomaterials to Papillary thyroid cancer be prospective theranostic agents. Gold nanomaterial supplies a versatile system for simultaneously holding therapeutics and diagnostics on its surface via gold thiol bonding. Therefore, those connected drugs can be intracellularly produced from gold nanocarriers by exchange reactions with cytosolic glutathione. 4 In a recent report described by Heo et al5 AuNP changed with multiple ligands, such as PEG, biotin, paclitaxel, and rhodamine B linked B cyclodextrin on the surface was proven to be considered a beneficial theranostic agent for cancer therapy without a cytotoxic effect on normal cells.
Being an optical imaging agent missing intrinsic fluorescent characteristics, regular sized AuNP was rarely used. Nevertheless, because of its higher atomic number and X ray absorption coefficient than iodine, the feasibility of AuNP as contrast agent in computed FK866 tomography imaging was examined. 6 In addition, Kim et al presented fresh multi-functional AuNP for targeted molecular CT imaging and treatment of prostate cancer,7 in which a prostate specific membrane antigen RNA aptamer that bound to PSMA was functionalized onto the top of AuNP. It had been confirmed in the study that the as fabricated PSMA aptamer conjugated AuNP demonstrated higher CT power toward qualified LNCaP cells than that of nontargeted PC3 cells.
More over, PSMA aptamer conjugated AuNP full of the anti-cancer drug doxorubicin was somewhat far better against precise LNCaP than against nontargeted PC3 cells. Also, the large X ray absorption coefficient makes silver nanomaterial not only a great CT imaging contrast agent but also a terrific radiotherapy sensitizer. As we know, the biggest challenge for radiation therapy is to reach the best likelihood of cure without significant morbidity. Targeted delivery of radiotherapy sensitizer to the tumor site seems to improve the accuracy of radiation treatment, to ensure that more targeted doses could be provided while reducing the impact on neighboring tissues.
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