scholarly journals Drug delivery systems (DDSs) of osmium nanoparticles on human gum cancer cells, tissues and tumors treatment under synchrotron radiation

2019 ◽  
Vol 5 (6) ◽  
Author(s):  
Alireza Heidari ◽  
Katrina Schmitt ◽  
Maria Henderson ◽  
Elizabeth Besana
2020 ◽  
Vol 21 (11) ◽  
pp. 902-909
Author(s):  
Jingxin Zhang ◽  
Weiyue Shi ◽  
Gangqiang Xue ◽  
Qiang Ma ◽  
Haixin Cui ◽  
...  

Background: Among all cancers, lung cancer has high mortality among patients in most of the countries in the world. Targeted delivery of anticancer drugs can significantly reduce the side effects and dramatically improve the effects of the treatment. Folate, a suitable ligand, can be modified to the surface of tumor-selective drug delivery systems because it can selectively bind to the folate receptor, which is highly expressed on the surface of lung tumor cells. Objective: This study aimed to construct a kind of folate-targeted topotecan liposomes for investigating their efficacy and mechanism of action in the treatment of lung cancer in preclinical models. Methods: We conjugated topotecan liposomes with folate, and the liposomes were characterized by particle size, entrapment efficiency, cytotoxicity to A549 cells and in vitro release profile. Technical evaluations were performed on lung cancer A549 cells and xenografted A549 cancer cells in female nude mice, and the pharmacokinetics of the drug were evaluated in female SD rats. Results: The folate-targeted topotecan liposomes were proven to show effectiveness in targeting lung tumors. The anti-tumor effects of these liposomes were demonstrated by the decreased tumor volume and improved therapeutic efficacy. The folate-targeted topotecan liposomes also lengthened the topotecan blood circulation time. Conclusion: The folate-targeted topotecan liposomes are effective drug delivery systems and can be easily modified with folate, enabling the targeted liposomes to deliver topotecan to lung cancer cells and kill them, which could be used as potential carriers for lung chemotherapy.


RSC Advances ◽  
2016 ◽  
Vol 6 (54) ◽  
pp. 48294-48314 ◽  
Author(s):  
A. P. Subramanian ◽  
S. K. Jaganathan ◽  
A. Manikandan ◽  
K. N. Pandiaraj ◽  
Gomathi N ◽  
...  

The phytochemicals were found to become more soluble when delivered by the nanocarriers and exhibited a remarkable effect on the cancer cells compared to its free form.


2016 ◽  
Vol 17 (1-2) ◽  
Author(s):  
Julia Modrejewski ◽  
Johanna-Gabriela Walter ◽  
Imme Kretschmer ◽  
Evren Kemal ◽  
Mark Green ◽  
...  

AbstractThe purpose of this study was to develop a model system for targeted drug delivery. This system should enable targeted drug release at a certain tissue in the body. In conventional drug delivery systems, drugs are often delivered unspecifically resulting in unwarranted adverse effects. To circumvent this problem, there is an increasing demand for the development of intelligent drug delivery systems allowing a tissue-specific mode of delivery. Within this study, nanoparticles consisting of two biocompatible polymers are used. Because of their small size, nanoparticles are well-suited for effective drug delivery. The small size affects their movement through cell and tissue barriers. Their cellular uptake is easier when compared to larger drug delivery systems. Paclitaxel was encapsulated into the nanoparticles as a model drug, and to achieve specific targeting an aptamer directed against lung cancer cells was coupled to the nanoparticles surface. Nanoparticles were characterized by dynamic light scattering (DLS), transmission electron microscopy (TEM), fourier transform infrared spectroscopy (FTIR), and nanotracking analysis (NTA). Also their surface charge was characterized from ζ-potential measurements. Their preparation was optimized and subsequently specificity of drug-loaded and aptamer-functionalized nanoparticles was investigated using lung cancer cells.


Nanoscale ◽  
2017 ◽  
Vol 9 (44) ◽  
pp. 17318-17324 ◽  
Author(s):  
Yanhua Li ◽  
Yuanyuan Chen ◽  
Wei Pan ◽  
Zhengze Yu ◽  
Limin Yang ◽  
...  

The fabrication of well-behaved drug delivery systems that can transport drugs to specifically treat cancer cells rather than normal cells is still a tremendous challenge.


2012 ◽  
Vol 13 (10) ◽  
pp. 1476-1483 ◽  
Author(s):  
Ramesh Chandra ◽  
Jitender Madan ◽  
Prashant Singh ◽  
Ankush Chandra ◽  
Pradeep Kumar ◽  
...  

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 4946
Author(s):  
Anna Florczak ◽  
Inga Grzechowiak ◽  
Tomasz Deptuch ◽  
Kamil Kucharczyk ◽  
Alicja Kaminska ◽  
...  

Although progress is observed in cancer treatment, this disease continues to be the second leading cause of death worldwide. The current understanding of cancer indicates that treating cancer should not be limited to killing cancer cells alone, but that the target is the complex tumor microenvironment (TME). The application of nanoparticle-based drug delivery systems (DDS) can not only target cancer cells and TME, but also simultaneously resolve the severe side effects of various cancer treatment approaches, leading to more effective, precise, and less invasive therapy. Nanoparticles based on proteins derived from silkworms’ cocoons (like silk fibroin and sericins) and silk proteins from spiders (spidroins) are intensively explored not only in the oncology field. This natural-derived material offer biocompatibility, biodegradability, and simplicity of preparation methods. The protein-based material can be tailored for size, stability, drug loading/release kinetics, and functionalized with targeting ligands. This review summarizes the current status of drug delivery systems’ development based on proteins derived from silk fibroin, sericins, and spidroins, which application is focused on systemic cancer treatment. The nanoparticles that deliver chemotherapeutics, nucleic acid-based therapeutics, natural-derived agents, therapeutic proteins or peptides, inorganic compounds, as well as photosensitive molecules, are introduced.


RSC Advances ◽  
2017 ◽  
Vol 7 (22) ◽  
pp. 13104-13111 ◽  
Author(s):  
Natália Vilaça ◽  
Ana F. Machado ◽  
Filipa Morais-Santos ◽  
Ricardo Amorim ◽  
A. Patrícia Neto ◽  
...  

5-FU release profiles reveled to be dependent on the host structures. 5-FU DDS led to significant potentiation of the 5-FU effect in cancer cells.


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