Read by QxMD icon Read

photothermal therapy

Wenjun Shan, Ronghe Chen, Qiang Zhang, Jie Zhao, Binbin Chen, Xi Zhou, Shefang Ye, Shengli Bi, Liming Nie, Lei Ren
In recent years, hepatitis B core protein virus-like particle (HBc VLP) is an impressive biomaterial, which has attracted considerable attention due to favorable properties such as structural stability, high uptake efficiency, and biocompatibility in biomedical applications. Heretofore, only a few attempts have been made to apply it in physical, chemical, and biological therapy for cancer. In this study, a tumor-targeting RGD-HBc VLP is first fabricated through genetic engineering. For image-guided cancer phototherapy, indocyanine green (ICG) is loaded into RGD-HBc VLP via a disassembly/reassembly pathway and electrostatic attraction with high efficiency...
May 22, 2018: Advanced Materials
Wenfei Chen, Ying Wang, Ming Qin, Xudong Zhang, Zhirong Zhang, Xun Sun, Zhen Gu
The facultative anaerobe Salmonella strain VNP20009 selectively colonizes into tumors following systemic injection due to its preference for the hypoxia in the tumor cores. However, the Phase 1 Clinical Trial of VNP20009 has been terminated mainly due to its weak anti-tumor effects and exhibition of dose-dependent toxicity. Here we leveraged the advantages of VNP20009 biotherapy together with polydopamine-mediated photothermal therapy in order to enhance the antitumor efficacy toward malignant melanoma. VNP20009 was coated with polydopamine via oxidation and self-polymerization, which was then injected into tumor-bearing mice via the tail vein...
May 22, 2018: ACS Nano
Ming Zhang, Wentao Wang, Yingjun Cui, Ninglin Zhou, Jian Shen
Background: Recently, combined photodynamic therapy (PDT) and photothermal therapy (PTT) has become a desired treatment for cancer. However, the development of economic, high-efficiency, and safe photosensitizers/photothermal agents remains a significant challenge. Methods: A novel nanocomposite has been developed via the assembly of iron oxide carbon dot (Fe3 O4 -CDs) nanoparticles and black phosphorus quantum dots (genipin [GP]-polyglutamic acid [PGA]-Fe3 O4 -CDs@BPQDs), and this nanocomposite shows a broad light-absorption band and a photodegradable character...
2018: International Journal of Nanomedicine
Fanli Xu, Mengxue Liu, Xin Li, Zhijuan Xiong, Xueyan Cao, Xiangyang Shi, Rui Guo
The combination of photothermal therapy (PTT) and photodynamic therapy (PDT) in cancer treatment has attracted much attention in recent years. However, developing highly efficient and targeted therapeutic nanoagents for amplifying PTT and PDT treatments remains challenging. In this work, we developed a novel photothermal and photodynamic therapeutic nanoplatform for treatment of cancer cells overexpressing integrin αv β₃ through the coating of polydopamine (PDA) on indocyanine green (ICG)-loaded laponite (LAP) and then further conjugating polyethylene glycol-arginine-glycine-aspartic acid (PEG-RGD) as targeted agents on the surface...
May 19, 2018: Nanomaterials
Mariela Inostroza-Riquelme, Andrea Vivanco, Pablo Lara, Simón Guerrero, Edison Salas-Huenuleo, Alejandro Chamorro, Lisette Leyton, Karen Bolaños, Eyleen Araya, Andrew F G Quest, Marcelo J Kogan, Felipe Oyarzun-Ampuero
Here we report the incorporation of gold nanostructures (nanospheres or nanorods, functionalized with carboxylate-end PEG) and curcumin oil-in-water (O/W) nanoemulsions (CurNem) into alginate microgels using the dripping technique. While gold nanostructures are promising nanomaterials for photothermal therapy applications, CurNem possess important pharmacological activities as reported here. In this sense, we evaluated the effect of CurNem on cell viability of both cancerous and non-cancerous cell lines (AGS and HEK293T, respectively), demonstrating preferential toxicity in cancer cells and safety for the non-cancerous cells...
May 18, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Mei Chen, Zhide Guo, Qinghua Chen, Jingping Wei, Jingchao Li, Changrong Shi, Duo Xu, Dawang Zhou, Xianzhong Zhang, Nanfeng Zheng
Radiolabeled nanoparticles (NPs), taking advantage of nanotechnology and nuclear medicine, have shown attractive potential for cancer diagnosis and therapy. However, the high background signal in the liver and long-term toxic effects of radioisotopes caused by the nonselective accumulation of radiolabeled nanoparticles in organs have become the major challenges. Here, we report a pH-sensitive multifunctional theranostic platform with radiolabeled Pd nanosheets through a simple mixture of ultra-small Pd nanosheets and radioisotopes utilizing the strong adsorption of 131 I and 125 I on their surfaces (denoted as 131 I-Pd-PEG or 125 I-Pd-PEG)...
May 14, 2018: Chemical Science
Linhua Zhang, Yu Qin, Zhiming Zhang, Fan Fan, Chenlu Huang, Li Lu, Hai Wang, Xu Jin, Hanxue Zhao, Deling Kong, Chun Wang, Hongfan Sun, Xigang Leng, Dunwan Zhu
The combination of chemotherapy and photothermal therapy in multifunctional nanovesicles has emerged as a promising strategy to improve cancer therapeutic efficacy. Herein, we designed new pH/reduction dual-responsive and folate decorated polymeric micelles (FA Co-PMs) as theranostic nanocarrier to co-encapsulate doxorubicin (DOX) and indocyanine green (ICG) for targeted NIR imaging and chemo-photothermal combination therapy. The Co-PMs exhibited nano-sized structure (∼100 nm) with good monodispersity, high encapsulation efficiency of both ICG and DOX, triggered DOX release in response to acid pH and reduction environment, and excellent temperature conversion with laser irradiation...
May 16, 2018: Acta Biomaterialia
Cheong A Choi, Jung Eun Lee, Zihnil Adha Islamy Mazrad, Young Kwang Kim, Insik In, Ji Hoon Jeong, Sung Young Park
We described fluorescence resonance energy transfer for pH/redox-activatable fluorescent carbon dot (FNP) to realize "off-on" switched imaging-guided controllable photothermal therapy (PTT). The FNP is a carbonized self-crosslinked polymer that allows IR825 loading (FNP[IR825]) via hydrophobic interactions in cancer therapy. The capability for fluorescence bioimaging was achieved via the internalization of FNP(IR825) into tumor cells, wherein glutathione (GSH) disulfide bonds were reduced and benzoic imine were cleaved under acidic conditions...
May 18, 2018: ChemMedChem
Lijia Jing, Haijing Qu, Dongqi Wu, Chaojian Zhu, Yongbo Yang, Xing Jin, Jian Zheng, Xiangsheng Shi, Xiufeng Yan, Yang Wang
Multidrug resistance (MDR) poses a great challenge to cancer therapy. It is difficult to inhibit the growth of MDR cancer due to its chemoresistance. Furthermore, MDR cancers are more likely to metastasize, causing a high mortality among cancer patients. In this study, a nanomedicine RGD-NPVs@MNPs/DOX was developed by encapsulating melanin nanoparticles (MNPs) and doxorubicin (DOX) inside RGD peptide (c(RGDyC))-modified nanoscale platelet vesicles (RGD-NPVs) to efficiently inhibit the growth and metastasis of drug-resistant tumors via a cancer cells and tumor vasculature dual-targeting strategy...
2018: Theranostics
Mengmeng Sun, Jianwen Guo, Hanjun Hao, Tong Tong, Kun Wang, Weiping Gao
Near-infrared (NIR)-absorbing conjugated polymer nanoparticles are interesting for imaging-guided combination therapy, especially for synergistic photothermal therapy and chemotherapy; however, most of them target tumours passively through the enhanced permeability and retention (EPR) effect, leading to low utilization efficiency. To address this problem, we report an active tumour-targeting strategy of tumour-homing chimeric polypeptide-conjugated NIR-absorbing conjugated-polymer nanoparticles as a new class of drug nanocarriers for imaging-guided combination therapy of cancer...
2018: Theranostics
Siwen Li, Yuxi Liu, Yalan Rui, Liping Tang, Samuel Achilefu, Yueqing Gu
Although EML4-ALK transforming fusion gene is represented in only 8% of non-small cell lung cancer (NSCLC) cases, its expression is partly responsive for the failure of current NSCLC treatments. Preventing secondary mutation of the ALK protein through direct gene manipulation could overcome NSCLC drug resistance. Method: In this study, we developed a gold nanoshell (HAuNs) drug carrier for delivery and selective photo-thermal release of genes that target ALK and microRNA-301 in NSCLC. Additionally, the densely-coated nanoshell adsorbed high amounts of the positively-charged anticancer drug doxorubicin (DOX), generating an exciting multidimensional treatment strategy that includes gene-, thermal- and chemo- therapy...
2018: Theranostics
Florence Masse, Mathieu Ouellette, Guillaume Lamoureux, Elodie Boisselier
Many research projects are underway to improve the diagnosis and therapy in ophthalmology. Indeed, visual acuity deficits affect 285 million people worldwide and different strategies are being developed to strengthen patient care. One of these strategies is the use of gold nanoparticles (GNP) for their multiple properties and their ability to be used as both diagnosis and therapy tools. This review exhaustively details research developing GNPs for use in ophthalmology. The toxicity of GNPs and their distribution in the eye are described through in vitro and in vivo studies...
May 16, 2018: Medicinal Research Reviews
Sungyun Kim, Song Yi Lee, Hyun-Jong Cho
Organic/inorganic hydrid nanoparticles (NPs) composed of berberine (BER) and zinc oxide (ZnO) were developed for the therapy of lung cancers. Without the use of pharmaceutical excipients, NPs were fabricated with only dual anticancer agents (BER and ZnO) by facile blending method. The mean weight ratio between BER and ZnO in BER-ZnO NPs was 39:61 in this study. BER-ZnO NPs dispersed in water exhibited 200-300 nm hydrodynamic size under 5 mg/mL concentration. The exposure of both BER and ZnO in the outer layers of BER-ZnO NPs was identified by X-ray photoelectron spectroscopy analysis...
May 11, 2018: Biochemical and Biophysical Research Communications
Meirong Hou, Chenggong Yan, Zelong Chen, Qingliang Zhao, Miaomiao Yuan, Yikai Xu, Bingxia Zhao
Ternary copper-based chalcogenide nanomaterials have become rather attractive due to the near-infrared (NIR) response in cancer theranostic fields. However, it is still challenging to further improve the theranostic efficiency of these nanomaterials. Herein, Cu-Sb-S nanoparticles (NPs) around 24 nm are synthesized facilely and functionalized with poly(vinylpyrrolidone) (PVP). Under the NIR irradiation, the resultant PVP-Cu-Sb-S NPs exhibit a relatively high photothermal conversion efficiency of 53.16% and a simultaneous reactive oxygen species (ROS) generation effect...
May 9, 2018: Acta Biomaterialia
Qingyan Jia, Xiuli Zheng, Jiechao Ge, Weimin Liu, Haohui Ren, Shiqing Chen, Yongmei Wen, Hongyan Zhang, Jiasheng Wu, Pengfei Wang
As phototheranostic agents, carbon dots (CDs), have recently drawn considerable attention due to their excellent physicochemical properties. However, the complex synthetic route and high-cost of CDs greatly limit their practical application. To address this issue, given their nearly infinite supply from nature, Hypocrella bambusae is used as the precursor for the preparation of CDs in this study. The obtained Hypocrella bambusae CDs (HBCDs) possess good water solubility, broad absorption (350-800 nm), red-light emission (maximum peak at 610 nm), and low biotoxicity...
May 4, 2018: Journal of Colloid and Interface Science
Yushen Jin, Xin Yang, Jie Tian
Early identification and treatment of hepatocellular carcinoma is very important for improving the prognosis and survival rate of the patient. To enhance the visualization and treatment efficiency of HCC, a theranostic agent has been developed that combines photoacoustic/fluorescence imaging with photothermal therapy for cancer. We report the synthesis of multifunctional theranostic SP94-modified polypyrrole (PPy)-BSA-ICG nanoparticles by a simple method. The multifunctional theranostic agent helped to combine two modes of imaging modalities, i...
May 10, 2018: Nanoscale
Bo Zhou, Bang-Ping Jiang, Wanying Sun, Fang-Mian Wei, Yun He, Hong Liang, Xing-Can Shen
Design and the development of photosensitizers that can efficiently energy conversion of near infrared (NIR) laser irradiation are of major importance for cancer photoassisted therapeutics. Herein, we demonstrate for the first time that Prussian blue (PB), a classic coordination compound can act as a novel photosensitizer with efficient generation of 1O2 and excellent photothermal conversion via a NIR photo irradiation-induced energy-transfer. After modification with hyaluronic acid (HA), the as-prepared HA-modified PB nanocubes (HA@PB) are highly dispersible in aqueous and physiological solutions, as well as shows excellent photothermal/phodynamic activities under NIR (808 nm) photoexcitation...
May 10, 2018: ACS Applied Materials & Interfaces
Heng Zhao, Ping Zhou, Kai Huang, Guang Deng, Zhiguo Zhou, Jing Wang, Mingwei Wang, Yingjian Zhang, Hong Yang, Shiping Yang
Nanomedicine has significantly impacted cancer theranostics. However, its efficiency is restricted by the limited enhanced permeability and retention effect of nanomaterials and insufficient density/specificity of receptors of tumor cells. Herein, an apoptosis-homing nanoplatform based on zinc(II) dipicolylamine (ZnDPA) conjugated Fe/Fe3 O4 nanoparticles (MNPs/ZnDPA), which demonstrates amplified magnetic resonance signal and photothermal therapy, is developed. In an apoptotic xenograft model constructed by doxorubicin, due to the high affinity between ZnDPA and the upregulated level of phosphatidylserine on the outer surface of apoptotic cancer cells, the accumulation value of MNPs/ZnDPA is enhanced two-fold and the tumor/muscle ratio of T2 values is decreased to 50% compared to that in the normal xenograft model...
May 10, 2018: Advanced Healthcare Materials
Fan Yang, Jiawei Lu, Qinfei Ke, Xiaoyuan Peng, Yaping Guo, Xuetao Xie
The development of multifunctional biomaterials to repair bone defects after neoplasm removal and inhibit tumor recurrence remained huge clinical challenges. Here, we demonstrate a kind of innovative and multifunctional magnetic mesoporous calcium sillicate/chitosan (MCSC) porous scaffolds, made of M-type ferrite particles (SrFe12 O19 ), mesoporous calcium silicate (CaSiO3 ) and chitosan (CS), which exert robust anti-tumor and bone regeneration properties. The mesopores in the CaSiO3 microspheres contributed to the drug delivery property, and the SrFe12 O19 particles improved photothermal therapy (PTT) conversion efficacy...
May 9, 2018: Scientific Reports
Yu Cao, Xiangdan Meng, Dongdong Wang, Kai Zhang, Wenhao Dai, HaiFeng Dong, Xueji Zhang
Lately, photothermal therapy (PTT) and photodynamic therapy (PDT) dual-modal therapy has attracted much attention in cancer therapy as a synergistic therapeutic model. However, the integration of PDT and PTT in single nanoagent for cancer therapy is still a challenging task. Herein, an intelligent MnO2/Cu2-xS-siRNA nanoagent simultaneously overcoming inherent limitations of PDT and PTT with remarkable PTT/PDT therapeutic efficiency enabling multimode accurate tumor imaging diagnostic is designed. We first develop a general method to decorate Cu2-xS on the surface of MnO2 nanosheet (MnO2/Cu2-xS), then, it was loaded with heat shock protein (HSP) 70 siRNA to obtain MnO2/Cu2-xS-siRNA...
May 8, 2018: ACS Applied Materials & Interfaces
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"