Mass spectrometry-based assay for the rapid detection of thiol-containing natural products
作者:Stacy L. Capehart、Erin E. Carlson
DOI:10.1039/c6cc07111b
日期:——
Natural products are privileged scaffolds due to their high propensity to possess bioactivity. To expedite discovery of thiol-containing compounds, we devised a selective solid-supported reagent for their immobilization, followed by...
Effect of the Nature of the Spacer on Gene Transfer Efficacies of Novel Thiocholesterol Derived Gemini Lipids in Different Cell Lines: A Structure–Activity Investigation
A structure-activity investigation was undertaken to see the effect of the nature of the spacer on the gene transfection efficacies of thiocholesterol -derived cationic gemini lipids possessing disulfide linkage between the cationic headgroup and the thiocholesterol moiety. Three gemini cationic lipids possessing hydrophobic flexible (-(CH2)(5)-; 1), hydrophobic rigid (-C6H4-; 2), and hydrophilic flexible (-CH2-CH2-O-CH2-CH2-; 3) spacer segments were synthesized. In HeLa cells, lipid formulations 1 and 2 were found to be more effective as compared to lipid 3 formulation. In HT1080 cell line, the order of transfectability was 3 > 1 > 2. Transfection studies in HeLa and HT 1080 cell line also showed 40-50% transfection efficacy in the presence of 10% serum conditions. These formulations were also able to transfect gene across difficult cells like HaCaT. Cytotoxic studies showed the nontoxic nature of these lipid-DNA complexes at different N/P ratios used for transfection studies.
WO2006/96754
申请人:——
公开号:——
公开(公告)日:——
Drug Encapsulation and Release by Mesoporous Silica Nanoparticles: The Effect of Surface Functional Groups
作者:Si Yu Tan、Chung Yen Ang、Peizhou Li、Qi Ming Yap、Yanli Zhao
DOI:10.1002/chem.201403551
日期:2014.9.1
Mesoporoussilicananoparticles (MSNPs) have been widely used as drug carriers for stimuli‐responsive drug delivery. Herein, a catalysis screening technique was adopted for analyzing the effects of chain length, terminal group, and density of disulfide‐appended functional ligands on the surface of MSNPs on drug‐loading capacity and glutathione‐triggered drug‐release kinetics. The ligand with an intermediate