scholarly journals Nanoscaled zinc pyrazolate metal–organic frameworks as drug-delivery systems

2017 ◽  
Vol 73 (a2) ◽  
pp. C1190-C1190
Author(s):  
Sara Rojas ◽  
Fracisco J. Carmona ◽  
Carmon R. Maldonado ◽  
Patricia Horcajada ◽  
Tania Hidalgo ◽  
...  
2021 ◽  
pp. 2100014
Author(s):  
Bhanu Nirosha Yalamandala ◽  
Wei‐Ting Shen ◽  
Sheng‐Hao Min ◽  
Wen‐Hsuan Chiang ◽  
Shing‐Jyh Chang ◽  
...  

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Chao Yan ◽  
Yue Jin ◽  
Chuanxiang Zhao

AbstractNanoparticles as drug delivery systems can alter the drugs' hydrophilicity to affect drug uptake and efflux in tissues. They prevent drugs from non-specifically binding with bio-macromolecules and enhance drug accumulation at the lesion sites, improving therapy effects and reducing unnecessary side effects. Metal–organic frameworks (MOFs), the typical nanoparticles, a class of crystalline porous materials via self-assembled organic linkers and metal ions, exhibit excellent biodegradability, pore shape and sizes, and finely tunable chemical composition. MOFs have a rigid molecular structure, and tunable pore size can improve the encapsulation drug's stability under harsh conditions. Besides, the surface of MOFs can be modified with small-molecule ligands and biomolecule, and binding with the biomarkers which is overexpressed on the surface of cancer cells. MOFs formulations for therapeutic have been developed to effectively respond to the unique tumor microenvironment (TEM), such as high H2O2 levels, hypoxia, and high concentration glutathione (GSH). Thus, MOFs as a drug delivery system should avoid drugs leaking during blood circulation and releasing at the lesion sites via a controlling manner. In this article, we will summary environment responsive MOFs as drug delivery systems for tumor therapy under different stimuli.


2012 ◽  
Vol 10 (1) ◽  
pp. 89-101 ◽  
Author(s):  
Chun-Yi Sun ◽  
Chao Qin ◽  
Xin-Long Wang ◽  
Zhong-Min Su

2020 ◽  
Vol 17 ◽  
Author(s):  
Ailing Feng ◽  
Yanni Wang ◽  
Jinzi Ding ◽  
Rong Xu ◽  
Xiaodong Li

Background: Development of controlled drug delivery systems can improve the pharmacokinetic characteristics of drug molecules in the human body, thereby significantly improving the utilization rate of drugs and reducing toxicity and side effects caused by high concentrations of drugs, which can occur when delivery is not controlled. Metal organic frameworks are a new class of very promising crystalline microporous materials, especially when the size is reduced to the nanometer range. Metal organic frameworks exhibit large specific surface areas, tunable compositions, and easy functionalization. In recent years, increasing number of studies have reported the remarkable advances in multifunctional nanoscale metal organic frameworks in drug delivery. Objective: Review the latest research involving advances in stimuli-responsive nanoscale metal organic frameworks as drug delivery systems in controlled-release drugs. Discussion: We first introduce the two main strategies associated with nanoscale metal organic frameworks used in drug loading: direct assembly and post-encapsulation. We next focus on the latest discoveries of nanoscale metal organic framework-based stimulus response systems for drug delivery, including pH, magnetics, light, ion, temperature, and other stimuli, as well as multiple stimulus-responsive drug delivery systems. Finally, we discuss the challenges and future development directions of nanoscale metal organic framework-based controlled drug release.


Author(s):  
Abdollah Karami ◽  
Omnia Mohamed ◽  
Ahmed Ahmed ◽  
Ghaleb A. Husseini ◽  
Rana Sabouni

Background: Metal-organic frameworks (MOFs), as attractive hybrid crystalline porous materials, are increasingly being investigated in biomedical applications owing to their exceptional properties, including high porosity, ultrahigh surface areas, tailorable composition and structure, and tunability and surface functionality. Of interest in this review is the design and development of MOFbased drug delivery systems (DDSs) that have excellent biocompatibility, good stability under physiological conditions, high drug loading capacity, and controlled/targeted drug release. Objective: This review highlights the latest advances in MOFs as anticancer drug delivery systems (DDSs) along with insights on their design, fabrication, and performance under different stimuli that are either internal or external. The synthesis methods of MOFs, along with their advantages and disadvantages, are briefly discussed. The emergence of multifunctional MOF-based theranostic platforms is also discussed. Finally, the future challenges facing the developments of MOFs in the field of drug delivery are discussed. Methods: The review was prepared by carrying out a comprehensive literature survey using relevant work published in various scientific databases. Results: Novel MOFs in biomedical applications, especially in drug delivery, have shown great potentials. MOF-based DDSs can be classified into normal (non-controllable) DDSs, stimuli-responsive DDSs, and theranostic platforms. The normal DDSs are pristine MOFs loaded with MOFs and offer little to no control over the drug delivery. Stimuli-responsive DDSs offer better spatiotemporal control over the drug release by responding to either endogenous (pH, redox, ions, ATP) or exogenous stimuli (light, magnetism, US, pressure, temperature). The theranostic platforms combine stimuli-responsive drug delivery with diagnostic imaging functionality, paving the road for imaging-guided drug delivery. Conclusion: This review presented a summary of the various methods utilized in MOF synthesis along with the advantages and disadvantages of each method. Furthermore, the review highlighted and discussed the latest developments in the field of MOF-based DDSs and theranostic platforms. The review is focused on the characteristics of MOF-based DDSs, the encapsulation of different anticancer drugs as well as their stimuli-responsive release.


2021 ◽  
Vol 1 (8) ◽  
pp. 2170081
Author(s):  
Bhanu Nirosha Yalamandala ◽  
Wei‐Ting Shen ◽  
Sheng‐Hao Min ◽  
Wen‐Hsuan Chiang ◽  
Shing‐Jyh Chang ◽  
...  

2016 ◽  
Vol 55 (5) ◽  
pp. 2650-2663 ◽  
Author(s):  
Sara Rojas ◽  
Francisco J. Carmona ◽  
Carmen R. Maldonado ◽  
Patricia Horcajada ◽  
Tania Hidalgo ◽  
...  

2021 ◽  
Vol 28 ◽  
Author(s):  
Yuyu Zhong ◽  
Weicong Liu ◽  
Congying Rao ◽  
Baohong Li ◽  
Xiaoxiong Wang ◽  
...  

Background: To date, a number of new and attractive materials have been applied in drug delivery systems (DDDs) to improve the efficiency of the treatment of cancers. Some problems like low stability, toxicity, and weak ability of targeting have hampered most of the materials for further applications in biomedicine. MIL(MIL = Materials of Institute Lavoisier), as a typical subclass of metal-organic frameworks (MOFs), owns more advantages than other subclass MOFs, such as better biodegradability and lower cytotoxicity. However, until now, systematic conclusions and analyses of Fe-based MIL on medical applications are rare, even though the majority of documents have discussed one research branch of the porous materials MOFs. Discussion: In this review, we're going to focus mainly on the latest studies of applications, including bioimaging, biosensing, and antibacterial and drug delivery on Fe-based MIL. The existing shortcomings and future perspectives of the rapidly growing biomedical applications of Fe-based MIL materials addressing dosage and loading strategies issues are also discussed briefly.. Further studies with the use of different therapies will be of great interest. Conclusion: This article reviews the Fe-based MOFs design and biomedical application, including biosensing, bioimaging, antibacterial agent, and drug delivery in recent years.


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