Enzymatically crosslinked hydrogels based on linear poly(ethylene glycol) polymer: performance and mechanism

2017 ◽  
Vol 8 (45) ◽  
pp. 7017-7024 ◽  
Author(s):  
Kaixuan Ren ◽  
Bin Li ◽  
Qinghua Xu ◽  
Chunsheng Xiao ◽  
Chaoliang He ◽  
...  
Keyword(s):  
Horseradish Peroxidase ◽  
Ethylene Glycol ◽  
Poly Ethylene Glycol ◽  
Linear Poly ◽  
Poly Ethylene ◽  
Performance And Mechanism

A horseradish peroxidase-catalyzed hydrogel based on a double-end tyramine conjugated linear poly(ethylene glycol) polymer is developed and clarified.

scholarly journals Bottlebrush-architectured poly(ethylene glycol) as an efficient vector for RNA interference in vivo

2019 ◽  
Vol 5 (2) ◽  
pp. eaav9322 ◽  
Author(s):  
Dali Wang ◽  
Jiaqi Lin ◽  
Fei Jia ◽  
Xuyu Tan ◽  
Yuyan Wang ◽  
...  
Keyword(s):  
Rna Interference ◽  
Ethylene Glycol ◽  
Target Genes ◽  
Area Under The Curve ◽  
Fold Increase ◽  
Small Interfering Rnas ◽  
Poly Ethylene Glycol ◽  
Linear Poly ◽  
Poly Ethylene

Nonhepatic delivery of small interfering RNAs (siRNAs) remains a challenge for development of RNA interference–based therapeutics. We report a noncationic vector wherein linear poly(ethylene glycol) (PEG), a polymer generally considered as inert and safe biologically but ineffective as a vector, is transformed into a bottlebrush architecture. This topology provides covalently embedded siRNA with augmented nuclease stability and cellular uptake. Consisting almost entirely of PEG and siRNA, the conjugates exhibit a ~25-fold increase in blood elimination half-life and a ~19-fold increase in the area under the curve compared with unmodified siRNA. The improved pharmacokinetics results in greater tumor uptake and diminished liver capture. Despite the structural simplicity these conjugates efficiently knock down target genes in vivo without apparent toxic and immunogenic reactions. Given the benign biological nature of PEG and its widespread precedence in biopharmaceuticals, we anticipate the brush polymer–based technology to have a significant impact on siRNA therapeutics.

Enzyme-mediated preparation of hydrogels composed of poly(ethylene glycol) and gelatin as cell culture platforms

RSC Advances ◽  
2015 ◽  
Vol 5 (4) ◽  
pp. 3070-3073 ◽  
Author(s):  
Kousuke Moriyama ◽  
Rie Wakabayashi ◽  
Masahiro Goto ◽  
Noriho Kamiya
Keyword(s):  
Cell Culture ◽  
Horseradish Peroxidase ◽  
Ethylene Glycol ◽  
Cell Sheet ◽  
Viable Cell ◽  
Poly Ethylene Glycol ◽  
Redox Responsive ◽  
Poly Ethylene ◽  
Responsive Hydrogels

Horseradish peroxidase-mediated preparation of redox-responsive hydrogels composed of thiolated poly(ethylene glycol) and gelatin allowed the proliferation of cells on the gel and the harvest as a viable cell sheet.

Complexation of Molecular Iodine by Linear Poly (Ethylene Glycol)

1979 ◽  
Vol 12 (7-8) ◽  
pp. 535-541 ◽  
Author(s):  
S. Hemalatha ◽  
B. Chandani ◽  
D. Balasubramanian
Keyword(s):  
Ethylene Glycol ◽  
Molecular Iodine ◽  
Poly Ethylene Glycol ◽  
Linear Poly ◽  
Poly Ethylene
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