Polyethylenimine-graft-Poly(ethylene glycol) Copolymers:  Influence of Copolymer Block Structure on DNA Complexation and Biological Activities as Gene Delivery System

2002 ◽  
Vol 13 (4) ◽  
pp. 845-854 ◽  
Author(s):  
Holger Petersen ◽  
Petra M. Fechner ◽  
Alison L. Martin ◽  
Klaus Kunath ◽  
Snjezana Stolnik ◽  
...  
Keyword(s):  
Gene Delivery ◽  
Ethylene Glycol ◽  
Delivery System ◽  
Block Structure ◽  
Biological Activities ◽  
Gene Delivery System ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene

A Poly(β-Amino Ester) of Spermine and Poly(ethylene Glycol) Diacrylate as a Gene Carrier

2007 ◽  
Vol 342-343 ◽  
pp. 425-428 ◽  
Author(s):  
Dhananjay Jere ◽  
Tae Hee Kim ◽  
Rohidas B. Arote ◽  
Hu Lin Jiang ◽  
Myung Haing Cho ◽  
...  
Keyword(s):  
Gene Delivery ◽  
Ethylene Glycol ◽  
Delivery System ◽  
Transfection Efficiency ◽  
Water Soluble ◽  
Gene Carrier ◽  
Gene Delivery System ◽  
Poly Ethylene Glycol ◽  
Wide Range ◽  
Poly Ethylene

Vectors are vital aspect of gene delivery system which decides the success of gene therapy. Efficient transfection with minimum or no toxicity, are two principal aims of any gene delivery system. In this our study, we rationally developed biodegradable water soluble poly(ßamino ester) (PAE) based on spermine (SPR) and poly (ethylene glycol) (PEG), by Michael-type addition reaction and further studied for its potential as a gene carrier. Confirmation of synthesized PAE was done by proton NMR spectroscopy. In gel retardation assay, the PAEs have shown good DNA binding ability over wide range of polyplexes. The addition of PEG over SPR resulted in a novel PAE with higher degree of safety and transfection efficiency as compared with polyethylenimine 25K (PEI) when studied in 293T human kidney carcinoma cells.

Poly(ethylene glycol)-poly-l-glutamate complexed with polyethyleneimine−polyglycine for highly efficient gene delivery in vitro and in vivo

2018 ◽  
Vol 6 (11) ◽  
pp. 3053-3062 ◽  
Author(s):  
Zhaopei Guo ◽  
Lin Lin ◽  
Jie Chen ◽  
Xingzhi Zhou ◽  
Hon Fai Chan ◽  
...  
Keyword(s):  
Cancer Therapy ◽  
Gene Delivery ◽  
Ethylene Glycol ◽  
Gene Delivery System ◽  
Poly Ethylene Glycol ◽  
Highly Efficient ◽  
Efficient Gene ◽  
Poly Ethylene

The highly efficient gene delivery system with effective serum resistant capacity is promising for cancer therapy.

Cationic long-chain hyperbranched poly(ethylene glycol)s with low charge density for gene delivery

2013 ◽  
Vol 4 (2) ◽  
pp. 393-401 ◽  
Author(s):  
Chunlai Tu ◽  
Nan Li ◽  
Lijuan Zhu ◽  
Linzhu Zhou ◽  
Yue Su ◽  
...  
Keyword(s):  
Gene Delivery ◽  
Ethylene Glycol ◽  
Charge Density ◽  
Poly Ethylene Glycol ◽  
Hyperbranched Poly ◽  
Poly Ethylene ◽  
Low Charge ◽  
Long Chain

A smart drug-delivery nanosystem based on carboxylated graphene quantum dots for tumor-targeted chemotherapy

Nanomedicine ◽  
2019 ◽  
Vol 14 (15) ◽  
pp. 2011-2025 ◽  
Author(s):  
Zhen Li ◽  
Jialong Fan ◽  
Chunyi Tong ◽  
Hongyan Zhou ◽  
Wenmiao Wang ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Quantum Dots ◽  
Folic Acid ◽  
Ethylene Glycol ◽  
Drug Delivery System ◽  
Delivery System ◽  
Graphene Quantum Dots ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene

Aim: Constructing a new drug-delivery system using carboxylated graphene quantum dots (cGQDs) for tumor chemotherapy in vivo. Materials & methods: A drug-delivery system was synthesized through a crosslink reaction of cGQDs, NH2-poly(ethylene glycol)-NH2 and folic acid. Results: A drug delivery system of folic acid-poly(ethylene glycol)-cGQDs was successfully constructed with ideal entrapment efficiency (97.5%) and drug-loading capacity (40.1%). Cell image indicated that the nanosystem entered into human cervical cancer cells mainly through macropinocytosis-dependent pathway. In vivo experiments showed the outstanding antitumor ability and low systemic toxicity of this nanodrug-delivery system. Conclusion: The newly developed drug-delivery system provides an important alternative for tumor therapy without causing systemic adverse effects.

scholarly journals The Importance of Poly(ethylene glycol) and Lipid Structure in Targeted Gene Delivery to Lymph Nodes by Lipid Nanoparticles

Pharmaceutics ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 1068 ◽  
Author(s):  
Danijela Zukancic ◽  
Estelle J. A. Suys ◽  
Emily H. Pilkington ◽  
Azizah Algarni ◽  
Hareth Al-Wassiti ◽  
...  
Keyword(s):  
Lymph Node ◽  
Gene Delivery ◽  
Ethylene Glycol ◽  
Lymph Nodes ◽  
Injection Site ◽  
Targeted Delivery ◽  
Lipid Nanoparticles ◽  
Tween 20 ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene

Targeted delivery of nucleic acids to lymph nodes is critical for the development of effective vaccines and immunotherapies. However, it remains challenging to achieve selective lymph node delivery. Current gene delivery systems target mainly to the liver and typically exhibit off-target transfection at various tissues. Here we report novel lipid nanoparticles (LNPs) that can deliver plasmid DNA (pDNA) to a draining lymph node, thereby significantly enhancing transfection at this target organ, and substantially reducing gene expression at the intramuscular injection site (muscle). In particular, we discovered that LNPs stabilized by 3% Tween 20, a surfactant with a branched poly(ethylene glycol) (PEG) chain linking to a short lipid tail, achieved highly specific transfection at the lymph node. This was in contrast to conventional LNPs stabilized with a linear PEG chain and two saturated lipid tails (PEG-DSPE) that predominately transfected at the injection site (muscle). Interestingly, replacing Tween 20 with Tween 80, which has a longer unsaturated lipid tail, led to a much lower transfection efficiency. Our work demonstrates the importance of PEGylation in selective organ targeting of nanoparticles, provides new insights into the structure–property relationship of LNPs, and offers a novel, simple, and practical PEGylation technology to prepare the next generation of safe and effective vaccines against viruses or tumours.

Alkylimidazolium End-Modified Poly(ethylene glycol) To Form the Mono-ion Complex with Plasmid DNA for in Vivo Gene Delivery

2014 ◽  
Vol 15 (3) ◽  
pp. 997-1001 ◽  
Author(s):  
Shoichiro Asayama ◽  
Atsushi Nohara ◽  
Yoichi Negishi ◽  
Hiroyoshi Kawakami
Keyword(s):  
Gene Delivery ◽  
Ethylene Glycol ◽  
Plasmid Dna ◽  
Poly Ethylene Glycol ◽  
In Vivo Gene Delivery ◽  
Poly Ethylene
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