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Mofs therapy

Jiani Huang, Ning Li, Chunmei Zhang, Zhaowei Meng
Metal-organic frameworks (MOFs) have been applied in chemotherapeutic drug loading for cancer treatment, but challenging for cases with large and malignant lesions. To overcome these difficulties, combinational therapies of chemotherapy and photothermal therapy (PTT) with potentially high selectivity and slight aggressiveness have drawn tremendous attention to treat various tumors. However, current MOFs-based nanohybrids with photothermal agents suffer from tedious synthesis process and heterogeneous structure...
October 18, 2018: ACS Applied Materials & Interfaces
M Wallander, K F Axelsson, D Lundh, M Lorentzon
Osteoporosis is a common complication of androgen deprivation therapy (ADT). In this large Swedish cohort study consisting of a total of nearly 180,000 older men, we found that those with prostate cancer and ADT have a significantly increased risk of future osteoporotic fractures. INTRODUCTION: Androgen deprivation therapy (ADT) in patients with prostate cancer is associated to increased risk of fractures. In this study, we investigated the relationship between ADT in patients with prostate cancer and the risk of incident fractures and non-skeletal fall injuries both compared to those without ADT and compared to patients without prostate cancer...
October 15, 2018: Osteoporosis International
Yuan Liu, Weijia Hou, Lian Xia, Cheng Cui, Shuo Wan, Ying Jiang, Yu Yang, Qiong Wu, Liping Qiu, Weihong Tan
Porphyrinic metal-organic framework (MOF) nanoparticles for photodynamic therapy solve the photosensitizer problems of poor solubility, self-quenching and aggregation. However, their low selectivity towards malignant tissues is an obstacle for bioimaging and a bottle-neck to cellular uptake for highly efficient photodynamic therapy of cancer. Here, ZrMOF nanoparticles as quenchers to conjugate DNA aptamers were developed for target-induced bioimaging and photodynamic therapy. A phosphate-terminal aptamer prepared by solid-phase DNA synthesis was anchored on the surface of ZrMOF nanoparticles through strong coordination between phosphate and zirconium...
October 14, 2018: Chemical Science
Xin Hua, Guosheng Gao, Shengdong Pan
In this paper, a high-affinity graphene oxide-encapsulated magnetic Zr-MOF (GO-Mag@Zr-MOF) was synthesized and characterized by SEM, TEM, and XPS for its morphology, structure, and components. Subsequently, the as-prepared GO-Mag@Zr-MOF was, for the first time, employed as magnetic solid-phase extraction (MSPE) adsorbent for pretreatment and determination of photodynamic therapy (PDT) with the photosensitizers hematoporphyrin (Hp) and hematoporphyrin monomethyl ether (HMME) in human urine samples coupled with ultra-performance liquid chromatography-high resolution mass spectrometry (UPLC-HRMS)...
October 2, 2018: Analytical and Bioanalytical Chemistry
Xin Leng, Xiaoxv Dong, Wenping Wang, Na Sai, Chunjing Yang, Longtai You, Hongliang Huang, Xingbin Yin, Jian Ni
Sustained-release preparation is a hot spot in antitumor drug research, where the first task is to select suitable drug carriers. Research has revealed that carboxylic acid iron metalā»organic frameworks (MOFs), constructed from iron (Fe) ions and terephthalic acid, are nontoxic and biocompatible. Due to the breathing effect, the skeleton of this mesoporous material is flexible and can reversibly adapt its pore size through drug adsorption. Therefore, we chose one kind of Fe-MOF, MIL-53(Fe), as a carrier for the anticancer drug oridonin (Ori)...
September 28, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Lu Zhang, Zhenzhen Wang, Yan Zhang, Fangfang Cao, Kai Dong, Jinsong Ren, Xiaogang Qu
Shutting down glucose supply by glucose oxidase (GOx) to starve tumors has been considered to be an attractive strategy in cancerous starvation therapy. Nevertheless, the in vivo applications of GOx-based starvation therapy are severely restricted by the poor GOx delivery efficiency and the self-limiting therapeutic effect. Herein, a biomimetic nanoreactor has been fabricated for starvation-activated cancer therapy by encapsulating GOx and prodrug tirapazamine (TPZ) in an erythrocyte membrane cloaked metal-organic framework (MOF) nanoparticle (TGZ@eM)...
October 3, 2018: ACS Nano
Pinghua Ling, Caihua Qian, Feng Gao, Jianping Lei
An enzyme-immobilized metal-organic framework (MOF) nanosheet system was developed as a tandem catalyst, which converted glucose into gluconic acid and H2O2, and sequentially the latter could be used to catalyze the oxidation of l-arginine to generate nitric oxide in the presence of porphyrinic MOFs as artificial enzymes under physiological pH, showing great potential in cancer depleting glucose for starving-like/gas therapy.
October 2, 2018: Chemical Communications: Chem Comm
Wei Jiang, Huiyuan Zhang, Jilian Wu, Guangxi Zhai, Zhonghao Li, Yuxia Luan, Sanjay Garg
Quercetin (QT) is one promising candidate for the treatment of various cancers with virtually no toxic side effects. However, its anticancer effect is severely restricted by its poor bioavailability, low water solubility, and chemical instability in the neutral and alkaline medium. Herein, zeolitic imidazolate framework-8 (ZIF-8) is first reported as the multifunctional nanoplatform to the codelivery of quercetin as an anticancer agent and CuS nanoparticles as a photothermal therapy (PTT) agent for synergistic combination of chemotherapy and PTT as well as overcoming the drawbacks of quercetin...
October 10, 2018: ACS Applied Materials & Interfaces
Yu-Bin Dong, Qun Guan, Yan-An Li, Wen-Yan Li
Photodynamic therapy (PDT) is a highly effective, noninvasive, highly selective method for cancer treatment. Nanoscale metal-organic frameworks (NMOFs) are a type of crystalline hybrid material composed of metal centers and organic linkers. Due to their adjustable structure, easy modification, permanent pores, and good biocompatibility, NMOFs, as either nanophotosensitizers or photosensitizer nanocarriers, have been used in PDT. In this article, we summarize the recent progress in MOF-based nanomaterials for tumor PDT...
September 5, 2018: Chemistry, An Asian Journal
Zheqi Shi, Xuerui Chen, Li Zhang, Shiping Ding, Xu Wang, Qunfang Lei, Wenjun Fang
A zeolitic imidazolate framework (ZIF-8) with high loading capacity and pH-responsive properties, an important subclass of metal-organic frameworks (MOFs), has become a promising material for drug delivery. A multifunctional drug delivery system (DDS) was designed in this work for effective targeting delivery of chloroquine diphosphate (CQ) as an autophagy inhibitor. The ZIF-8 nanoparticles encapsulating CQ (CQ@ZIF-8 NPs) were fabricated by a simple one-pot method and were then decorated with methoxy poly(ethylene glycol)-folate (FA-PEG), a special identifier of cancer cells, to form FA-PEG/CQ@ZIF-8...
September 25, 2018: Biomaterials Science
Bo Li, Xiaoya Wang, Lei Chen, Yanling Zhou, Wentao Dang, Jiang Chang, Chengtie Wu
Nanostructures based on metal-organic frameworks (MOFs) have promising potential as theragnostic nanoplatforms for phototherapy of cancer cells. However, the MOFs alone are seldom reported to be used as photothermal agents mainly due to their poor near-infrared (NIR) light absorption. Methods: Ultrathin copper-tetrakis (4-carboxyphenyl) porphyrin (Cu-TCPP) MOF nanosheets were prepared by a facile solvothermal route. The photothermal therapy (PTT), photodynamic therapy (PDT), and T1 -weighted magnetic resonance (MR) imaging capabilities and the high biocompatibility of these composite nanosheets were evaluated in vitro as well as in vivo in a mouse tumor model...
2018: Theranostics
Hong Dong, Gui-Xin Yang, Xin Zhang, Xiang-Bin Meng, Jing-Li Sheng, Xiao-Jun Sun, Yu-Jie Feng, Fengming Zhang
Nanoscale metal-organic frameworks (NMOFs) have been proved to be a class of promising drug carriers for their high porosity, crystalline nature with definite structure information and the potential of further functionality. However, MOF-based drug carriers with active tumor targeting function have not been extensive research until now. Here we show a strategy of constructing active tumor-targeted NMOFs drug carriers by anchoring functional folic acid (FA) molecules onto the metal clusters of NMOFs. Two Zr-based MOFs, MOF-808 and NH2-UiO-66, were chosen as model to cut down to nanoscale as drug carrier, then Zr6 cluster on the surface of the nano particle were further coordinated by the terminal carboxylate in FA molecule via the substitution to previous formate or terminal -OH ligands...
August 19, 2018: Chemistry: a European Journal
Azadeh Golmohamadpour, Bahram Bahramian, Mehdi Khoobi, Maryam Pourhajibagher, Hamid Reza Barikani, Abbas Bahador
BACKGROUND: Antimicrobial photodynamic therapy (aPDT) has been emerged as one of the promising non-invasive adjuvant for the treatment of endodontic infections. The key part of this technique is application of an optimized nontoxic photosensitizer (PS), like indocyanine green (ICG) activated by light source destroying bacterial contaminants. Notwithstanding all featured properties of ICG, this PS mainly suffers from the lack of stability and concentration-dependent aggregation. A variety of nanomaterials (NMs) has been widely exploited to improve the stability and efficiency of ICG...
August 2, 2018: Photodiagnosis and Photodynamic Therapy
Chuang Liu, Lijia Luo, Leyong Zeng, Jie Xing, Yuanzhi Xia, Shan Sun, Luyun Zhang, Zhe Yu, Junlie Yao, Zhangsen Yu, Ozioma Udochukwu Akakuru, Madiha Saeed, Aiguo Wu
AuroShell nanoparticles (sealed gold nanoshell on silica) are the only inorganic materials that are approved for clinical trial for photothermal ablation of solid tumors. Based on that, porous gold nanoshell structures are thus critical for cancer multiple theranostics in the future owing to their inherent cargo-loading ability. Nevertheless, adjusting the diverse experimental parameters of the reported procedures to obtain porous gold nanoshell structures is challenging. Herein, a series of amino-functionalized porous metal-organic frameworks (NH2 -MOFs) nanoparticles are uncovered as superior templates for porous gold nanoshell deposition (NH2 -MOFs@Aushell ) by means of a more facile and general one-step method, which combines the enriched functionalities of NH2 -MOFs with those of porous gold nanoshells...
August 2018: Small
Xinyue Hu, Lipeng Zhang
Severe acute pancreatitis (SAP) is still with a high incidence and mortality. Early onset is usually non-infectious inflammation caused by systemic inflammatory response syndrome (SIRS), with the further progress into pancreatic necrosis, which is the main cause of death. The occurrence of infection can induce or aggravate multiple organ failure (MOF), leading to death. Therefore, whether early use of antibiotics to prevent the occurrence of pancreatic infection and how to identify early pancreatic infection, how to choose the start of antibiotic therapy is the hot and difficult point of current study...
July 2018: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
Paul G Richardson, Enric Carreras, Massimo Iacobelli, Bijan Nejadnik
Hepatic veno-occlusive disease/sinusoidal obstruction syndrome (VOD/SOS) is a potentially life-threatening complication of conditioning during hematopoietic stem cell transplantation (HSCT) or chemotherapy without HSCT, with a historically reported mean incidence of 13.7% post-HSCT. Typical symptoms of VOD/SOS may include hyperbilirubinemia, painful hepatomegaly, weight gain, and ascites. Defibrotide, a polydisperse mixture of predominantly single-stranded polydeoxyribonucleotides, is currently the only therapy approved to treat hepatic VOD/SOS with pulmonary/renal dysfunction (ie, multiorgan dysfunction/multiorgan failure [MOD/MOF]) following HSCT in the United States and to treat severe hepatic VOD/SOS post-HSCT in the European Union...
June 26, 2018: Blood Advances
Dongdong Wang, Huihui Wu, Jiajia Zhou, Pengping Xu, Changlai Wang, Ruohong Shi, Haibao Wang, Hui Wang, Zhen Guo, Qianwang Chen
Herein, a simple one-pot way is designed to prepare a type of multifunctional metal-organic framework (MOF)-based hybrid nanogels by in situ hybridization of dopamine monomer in the skeleton of MnCo. The resultant hybrid nanoparticles (named as MCP) show enhanced photothermal conversion efficiency in comparison with pure polydopamine or MnCo nanoparticles (NPs) synthesized under a similar method and, therefore, show great potential for photothermal therapy (PTT) in vivo. The MCP NPs are expected to possess T 1 positive magnetic resonance imaging ability due to the high-spin Mn-N6 ( S = 5/2) in the skeleton of MnCo...
June 2018: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
Shutao Gao, Pengli Zheng, Zhenhua Li, Xiaochen Feng, Weixiao Yan, Shizhu Chen, Weisheng Guo, Dandan Liu, Xinjian Yang, Shuxiang Wang, Xing-Jie Liang, Jinchao Zhang
Improving the supply of O2 and the circulation lifetime of photosensitizers for photodynamic therapy (PDT) in vivo would be a promising approach to eliminate hypoxic tumors. Herein, by taking advantage of the significant gas-adsorption capability of metal-organic frameworks (MOFs), a biomimetic O2 -evolving photodynamic therapy (PDT) nanoplatform with long circulating properties was fabricated. Zirconium (IV)-based MOF (UiO-66) was used as a vehicle for O2 storing, then conjugated with indocyanine green (ICG) by coordination reaction, and further coated with red blood cell (RBC) membranes...
September 2018: Biomaterials
Kai Xing, Ruiqing Fan, Fengyou Wang, Huan Nie, Xi Du, Shuang Gai, Ping Wang, Yulin Yang
Metal-organic frameworks (MOFs), as drug delivery carriers, with high loading capacity and controllable release behavior can provide a more efficacious therapy in cancer treatments. In our work, a novel biocompatible zinc MOF Zn-cpon-1 with the (3,6)-connected rtl 3D topological network was designed and synthesized via employing ClO4 - anion as template. The optically and chemically stable Zn-cpon-1 could be verified as a pH-responsive dual-emission platform and excellent drug delivery carrier with higher 5-fluorouracil (5-FU) (44...
July 5, 2018: ACS Applied Materials & Interfaces
Zhaokui Jin, Penghe Zhao, Junheng Zhang, Tian Yang, Gaoxin Zhou, Daohong Zhang, Tianfu Wang, Qianjun He
The recognized therapeutic benefits from carbon monoxide (CO) have caused booming attention to develop a CO therapy for various major diseases, such as cancer. However, the controlled release of CO gas and the monitoring of the CO release are vitally important to the on-demand CO administration for a safe and efficient therapy, but greatly challenging. In this work, a new CO-releasing nanocomplex was constructed by the adsorption and coordination of manganese carbonyl ([MnBr(CO)5 ], abbreviated as MnCO) with a Ti-based metal-organic framework (Ti-MOF) to realize an intratumoral H2 O2 -triggered CO release and real-time CO release monitoring by fluorescence imaging...
August 9, 2018: Chemistry: a European Journal
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