Pseudo-branched polyester copolymer: an efficient drug delivery system to treat cancer

2020 ◽  
Vol 8 (6) ◽  
pp. 1592-1603
Author(s):  
Zachary Shaw ◽  
Arth Patel ◽  
Thai Butcher ◽  
Tuhina Banerjee ◽  
Ren Bean ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Cancer Cells ◽  
Drug Delivery System ◽  
Delivery System ◽  
Diagnosis And Treatment ◽  
Therapeutic Drug

New aliphatic pseudo-branched polyester copolymers are synthesized from diethylmalonate. The formulated nanomedicine successfully encapsulates therapeutic drug in higher dosage and deliver specifically to cancer cells for diagnosis and treatment.

scholarly journals Enhanced antitumor efficacy on colon cancer using EGF functionalized PLGA nanoparticles loaded with 5-Fluorouracil and perfluorocarbon

2019 ◽  
Author(s):  
pingping Wu ◽  
Qing Zhou ◽  
Huayun Zhu ◽  
Yan Zhuang ◽  
Jun Bao
Keyword(s):  
Drug Delivery ◽  
Colon Cancer ◽  
Tumor Growth ◽  
Cancer Cells ◽  
Drug Delivery System ◽  
Delivery System ◽  
Plga Nanoparticles ◽  
Therapeutic Drug ◽  
Histopathological Analysis ◽  
Colon Cancer Cells

Abstract Background: Recurrence and metastasis are the shortcomings of the clinical treatment of colon cancer. Finding an efficacy strategy for the treatment of colon cancer is important. In recent years, poly lactic-co-glycolic acid (PLGA) has been shown to have potential as a broad therapeutic drug delivery system. This study aimed to design a dual-loaded nanoparticles drug delivery system to overcome the limitations of chemotherapeutic drugs in colon cancer therapy. Methods: We developed epidermal growth factor (EGF) functionalized poly PLGA nanoparticles (NPs) co-loaded with 5-fluorouracil (5Fu) and perfluorocarbon (PFC) (EGF-PLGA@5Fu/PFC NPs) for target therapy of colon cancer. EGF-PLGA@5Fu /PFC NPs were estimated by morphology, size distribution, in vitro stability and release profile. CCK-8, Hoechst33342 staining and flow cytometry assays were performed to investigate the functions of EGF-PLGA@5Fu/PFC NPs in SW620 cells. Results: We found that EGF-PLGA@5Fu/PFC NPs had an average size of 200 nm with a 5Fu-loading efficiency of 7.29%. Targeted EGF-PLGA@5Fu/PFC NPs exhibited higher cellular uptake than non-targeted NPs in colon cancer cells. EGF-PLGA@5Fu/PFC NPs were found to have the best efficiency on cell viability suppression and apoptosis induction in SW620 colon cancer cells. In xenograft mice, EGF-PLGA@5Fu/PFC NPs had the best suppressive effects on tumor growth compared with 5Fu, PLGA@5Fu and PLGA@5Fu/PFC NPs. The results of histopathological analysis further indicated that EGF-targeted NPs were the most efficient on tumor growth inhibition. Mechanically, the data demonstrated the improved therapeutic outcomes were owing to the fact that PFC relieved tumor hypoxia via transporting oxygen to the tumor. Conclusions: We creatively constructed a biocompatible nanodrug delivery system and functionalized nanoparticles might provide new potential for selective delivery of chemotherapy drugs to cancers.

scholarly journals Enhanced antitumor efficacy on colon cancer using EGF functionalized PLGA nanoparticles loaded with 5-Fluorouracil and perfluorocarbon

2020 ◽  
Author(s):  
Pingping Wu(Former Corresponding Author) ◽  
Qing Zhou ◽  
Huayun Zhu ◽  
Yan Zhuang ◽  
Jun Bao(New Corresponding Author)
Keyword(s):  
Drug Delivery ◽  
Colon Cancer ◽  
Tumor Growth ◽  
Cancer Cells ◽  
Drug Delivery System ◽  
Delivery System ◽  
Plga Nanoparticles ◽  
Therapeutic Drug ◽  
Histopathological Analysis ◽  
Colon Cancer Cells

Abstract Background: Recurrence and metastasis are the shortcomings of the clinical treatment of colon cancer. Finding an efficacy strategy for the treatment of colon cancer is important. In recent years, poly lactic-co-glycolic acid (PLGA) has been shown to have potential as a broad therapeutic drug delivery system. This study aimed to design a dual-loaded nanoparticles drug delivery system to overcome the limitations of chemotherapeutic drugs in colon cancer therapy. Methods: We developed epidermal growth factor (EGF) functionalized poly PLGA nanoparticles (NPs) co-loaded with 5-fluorouracil (5Fu) and perfluorocarbon (PFC) (EGF-PLGA@5Fu/PFC NPs) for target therapy of colon cancer. EGF-PLGA@5Fu /PFC NPs were estimated by morphology, size distribution, in vitro stability and release profile. CCK-8, Hoechst33342 staining and flow cytometry assays were performed to investigate the functions of EGF-PLGA@5Fu/PFC NPs in SW620 cells. Results: We found that EGF-PLGA@5Fu/PFC NPs had an average size of 200 nm with a 5Fu-loading efficiency of 7.29%. Targeted EGF-PLGA@5Fu/PFC NPs exhibited higher cellular uptake than non-targeted NPs in colon cancer cells. EGF-PLGA@5Fu/PFC NPs were found to have the best efficiency on cell viability suppression and apoptosis induction in SW620 colon cancer cells. In xenograft mice, EGF-PLGA@5Fu/PFC NPs had the best suppressive effects on tumor growth compared with 5Fu, PLGA@5Fu and PLGA@5Fu/PFC NPs. The results of histopathological analysis further indicated that EGF-targeted NPs were the most efficient on tumor growth inhibition. Mechanically, the data demonstrated the improved therapeutic outcomes were owing to the fact that PFC relieved tumor hypoxia via transporting oxygen to the tumor. Conclusions: We creatively constructed a biocompatible nanodrug delivery system and functionalized nanoparticles might provide new potential for selective delivery of chemotherapy drugs to cancers.

scholarly journals pH and redox dual-sensitive drug delivery system constructed based on fluorescent carbon dots

RSC Advances ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 2656-2663
Author(s):  
Boye Zhang ◽  
Qianqian Duan ◽  
Yi Li ◽  
Jianming Wang ◽  
Wendong Zhang ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Controlled Release ◽  
Cancer Cells ◽  
Fluorescence Imaging ◽  
Drug Delivery System ◽  
Delivery System ◽  
Carbon Dots ◽  
Ph Responsive ◽  
Charge Reversal ◽  
Fluorescent Carbon Dots

The system is pH-responsive and redox-controlled release. And the charge reversal and size transitions of the system can enhance the targeted ability. Moreover, the system can recognize the cancer cells by the fluorescence imaging.

Design and Function of Engineered Protein Nanocages as a Drug Delivery System for Targeting Pancreatic Cancer Cells via Neuropilin-1

2015 ◽  
Vol 12 (5) ◽  
pp. 1422-1430 ◽  
Author(s):  
Masaharu Murata ◽  
Sayoko Narahara ◽  
Takahito Kawano ◽  
Nobuhito Hamano ◽  
Jing Shu Piao ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Pancreatic Cancer ◽  
Cancer Cells ◽  
Drug Delivery System ◽  
Delivery System ◽  
Pancreatic Cancer Cells ◽  
Neuropilin 1 ◽  
And Function

An Acid-Triggered Degradable and Fluorescent Nanoscale Drug Delivery System with Enhanced Cytotoxicity to Cancer Cells

2015 ◽  
Vol 16 (8) ◽  
pp. 2444-2454 ◽  
Author(s):  
Jinxia An ◽  
Xiaomei Dai ◽  
Zhongming Wu ◽  
Yu Zhao ◽  
Zhentan Lu ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Cancer Cells ◽  
Drug Delivery System ◽  
Delivery System

scholarly journals Promising Applications of Nanoparticles in the Treatment of Hearing Loss

2021 ◽  
Vol 9 ◽  
Author(s):  
Zilin Huang ◽  
Qiang Xie ◽  
Shuang Li ◽  
Yuhao Zhou ◽  
Zuhong He ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Hearing Loss ◽  
Inner Ear ◽  
Drug Delivery System ◽  
Clinical Application ◽  
Delivery System ◽  
Diagnosis And Treatment ◽  
Biological Research ◽  
Medical Applications ◽  
Traditional Treatment

Hearing loss is one of the most common disabilities affecting both children and adults worldwide. However, traditional treatment of hearing loss has some limitations, particularly in terms of drug delivery system as well as diagnosis of ear imaging. The blood–labyrinth barrier (BLB), the barrier between the vasculature and fluids of the inner ear, restricts entry of most blood-borne compounds into inner ear tissues. Nanoparticles (NPs) have been demonstrated to have high biocompatibility, good degradation, and simple synthesis in the process of diagnosis and treatment, which are promising for medical applications in hearing loss. Although previous studies have shown that NPs have promising applications in the field of inner ear diseases, there is still a gap between biological research and clinical application. In this paper, we aim to summarize developments and challenges of NPs in diagnostics and treatment of hearing loss in recent years. This review may be useful to raise otology researchers’ awareness of effect of NPs on hearing diagnosis and treatment.

scholarly journals Genistein Loaded Nanofibers Protect Spinal Cord Tissue Following Experimental Injury in Rats

2018 ◽  
Author(s):  
Mohamed Ismail ◽  
Sara Ibrahim ◽  
Azza Elamir ◽  
Amira M. Elrafei ◽  
Nageh Allam ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Spinal Cord ◽  
Drug Delivery System ◽  
Delivery System ◽  
Enhanced Recovery ◽  
Therapeutic Drug ◽  
Control Group ◽  
Spinal Cord Tissue ◽  
Injured Spinal Cord ◽  
Cord Injury

Implantable drug-delivery systems provide new means for achieving therapeutic drug concentration over a prolonged time to achieve better tissue protection and enhanced recovery. The hypothesis of the current study was to test the antioxidant and anti-inflammatory effects of genistein and nanofibers on the spinal cord tissue following experimental spinal cord injury (SCI). Rats were treated post SCI with genistein loaded on chitosan/polyvinyl alcohol (CS/PVA) nanofibers as an implantable drug-delivery system. SCI caused marked oxidative damage and inflammation as evident by the reduction in the super oxide dismutase (SOD) activity and the level of interleukin-10 (IL-10) in injured spinal cord tissue, as well as, the significant increase in the levels of nitric oxide (NO), malondialdehyde (MDA) and tumor necrosis factor-alpha (TNF-α). Treatment of rats post SCI with genistein and CS/PVA nanofibers improved most of the above mentioned biochemical parameters and shifted them toward the control group values. Genistein induced an increase in the activity of SOD and the level of IL-10, while causing a decrease in the levels of NO, MDA and TNF-α in injured spinal cord tissue. Genistein and CS/PVA nanofibers provide a novel combination for treating inflammatory nervous tissue conditions, especially when combined as an implantable drug-delivery system.

scholarly journals Self-assembled pH-responsive supramolecular hydrogel for hydrophobic drug delivery

RSC Advances ◽  
2018 ◽  
Vol 8 (55) ◽  
pp. 31581-31587 ◽  
Author(s):  
Lin Wang ◽  
Xuefeng Shi ◽  
Jian Zhang ◽  
Yuejun Zhu ◽  
Jinben Wang
Keyword(s):  
Drug Delivery ◽  
Cancer Cells ◽  
Drug Delivery System ◽  
Delivery System ◽  
Hydrophobic Drug ◽  
Ph Responsive ◽  
Supramolecular Hydrogel ◽  
Self Assembled

Supramolecular hydrogel, AGC16/NTS, was used to encapsulate hydrophobic drug curcumin (Cur), constructing a pH-responsive drug delivery system; the uptake of released Cur by cancer cells also occurred.

Using Magnetic and Photic Stimuli-Responsive Liposomes to Serve Up Chemotherapy Drugs to Cancer Cells

2020 ◽  
Vol 16 (6) ◽  
pp. 867-875
Author(s):  
Junlin Li ◽  
Lingyun Hao ◽  
Xiaojuan Zhang ◽  
Qing Lin ◽  
Dong Liang
Keyword(s):  
Drug Delivery ◽  
Drug Release ◽  
Cancer Cells ◽  
Drug Delivery System ◽  
Delivery System ◽  
Uv Light ◽  
Atomic Ratio ◽  
Solution Temperature ◽  
Photothermal Effect ◽  
Chemotherapy Drugs

Liposome is a traditional drug-delivery system and most novel studies have focused on its drug release function. In this paper, a new drug-delivery system based on liposomes was prepared, which contains hydrophobic FeAg alloy nanoparticles (FeAgNPs) in their lipid bilayer and berberine as test drug in their middle water phase. The size of AgFe-Ls was about 200 nm, the encapsulation efficiency of drugs was 35% and the lower critical solution temperature (LCST) of AgFe-Ls was about 41.96 °C. FeAgNPs in the AgFe-Ls had a 1:1 iron-to-silver atomic ratio with both optical and superparamagnetic properties. The photothermal effect and magnetocaloric effect of FeAgNPs could serve up both photo-stimulated and magnetic- stimulated drug release to liposomes. Release experiments results showed that AgFe-Ls could easily release berberine when stimulated by UV light (45% drug release at 20 min) or alternating current electromagnetic field (AMF) (80% drug release at 4 h). AgFe-Ls with both photo-controlled and magnetic-controlled drug release functions are promising to serve up chemotherapy drugs to cancer cells.

Application of Abdominal Imaging Based on Nano Drug Delivery System for Diagnosis and Treatment of Liver Cancer

2021 ◽  
Vol 21 (2) ◽  
pp. 824-832
Author(s):  
Zhenzhen Fan ◽  
Qingsheng Liu ◽  
Fangfang Lu ◽  
Zhihui Dong ◽  
Peng Gao
Keyword(s):  
Drug Delivery ◽  
Folic Acid ◽  
Liver Cancer ◽  
Drug Delivery System ◽  
Delivery System ◽  
Mesoporous Silica Nanoparticles ◽  
Drug Carrier ◽  
Diagnosis And Treatment ◽  
Fluorescent Nanoparticles ◽  
Abdominal Image

Liver cancer has a high incidence and a poor prognosis, which seriously affects human health. Doxorubicin is one of the chemotherapeutics used in the treatment of tumours, but its severe adverse reactions, especially cardiac toxicity, have limited its clinical application. The nanometre drug delivery system enables drug-loaded nanoparticles to be specifically concentrated in tumour tissues, increasing cell uptake and improving curative effect. Therefore, in this paper, folic acid-modified mesoporous silica nanoparticles (MSN-NH2-PEG-FA) were synthesized by modifying the folic acid on the surface of a drug carrier by using the characteristics of the expression of folic acid receptors, and using it as a drug. The carrier was loaded with antitumor drug doxorubicin hydrochloride (DOX), and a nanometre drug delivery system (MSN-NH2-PEG-FA/DOX) was constructed. At the same time, the near-infrared dye Cy5 was used to mark the mother nucleus to construct fluorescent nanoparticles (MSN-NH2-PEG-FA/DOX-Cy5) for cell and tumour imaging, so as to obtain the abdominal image of liver cancer patients, thereby realizing diagnosis and treatment. The research results show that the carrier can specifically gather in the liver area, reduce the distribution in the heart, reduce the toxic and side effects of drugs, and prolong the survival time of patients. The results of this study provide new ideas for the treatment of liver cancer, and provide a new theoretical basis and experimental basis for the study of inorganic nanomaterials as targeted drug delivery systems.

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