Sorting of Lipidated Peptides in Fluid Bilayers: A Molecular-Level Investigation
摘要:
Nearest-neighbor recognition (NNR) measurements have been made for two lipidated forms of GlyCys, interacting with analogues of cholesterol and 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) in the liquid-ordered (l(o)) and liquid-disordered (l(d)) phases. Interaction free energies that have been determined from these measurements have been used in Monte Carlo simulations to quantify the distribution of the peptides between liquid-ordered and liquid-disordered regions. These simulations have shown that significant differences in the lipid chains have a very weak influence on the partitioning of the peptide between these two phases. They have also revealed an insensitivity of the peptide partition coefficient, K-p, to the size of the l(o) and l(d) domains that are present. In a broader context, these findings strongly suggest that the sorting of peripheral proteins in cellular membranes via differential lipidation may be more subtle than previously thought.
[EN] COMPOSITION FOR ORGAN-SPECIFIC DELIVERY OF NUCLEIC ACID [FR] COMPOSITION POUR L'ADMINISTRATION SPÉCIFIQUE À UN ORGANE D'ACIDE NUCLÉIQUE [ZH] 用于核酸的器官特异性递送组合物
콜레스테롤이 공유결합된 알부민을 포함하는 나노입자 및 이에 봉입된 난용성 약물을 포함하는 난용성 약물 전달용 나노복합체
申请人:Gachon University of Industry-Academic cooperation Foundation 가천대학교 산학협력단(220040376324) BRN ▼129-82-07687
公开号:KR101629930B1
公开(公告)日:2016-06-13
본 발명은 콜레스테롤이 공유결합된 알부민을 포함하는 나노입자; 상기 콜레스테롤이 공유결합된 알부민 나노입자 및 이에 봉입된 난용성 약물을 포함하는 난용성 약물 전달용 나노복합체; 및 콜레스테롤이 공유결합된 알부민 나노입자 및 이에 봉입된 난용성 약물을 포함하는 난용성 약물 전달용 나노복합체의 제조방법에 관한 것이다.
synthesized and chemoselectively acylated on the hydrazine moiety with various fatty acid succinimidyl esters or N-(cholesterylcarbonyloxy) succinimide. The acylation was performed in water/2-methyl-propane-2-ol mixtures buffered at pH 5.1. The mild reaction conditions allow the derivatization of peptides by sensitive fatty acids.
N-terminal alpha-hydrazino acetyl peptides were synthesized and chemoselectively acylated on the hydrazine moiety with various fatty acid succinimidyl esters or N-(cholesterylcarbonyloxy) succinimide to give lipopeptides of high purity. The buffer and pH were adjusted in order to minimize the oxidation of the hydrazine moiety and to achieve the best conversion and selectivity. The acylation was performed
synthesized SM–Chol conjugates with functionally designed linker portions to restrain Chol mobility and examined their formation of orderedmembranes by a detergent insolubility assay, fluorescence anisotropy experiments, and fluorescence‐quenching assay. In all of the tests, membranes prepared from the conjugates showed properties of ordered domains comparable to a SM–Chol (1:1) membrane. To gain insight
申请人:National University Corporation
Tokyo Medical and Dental University
公开号:EP3770257A1
公开(公告)日:2021-01-27
The object of the present invention is to provide a nucleic acid agent that can be efficiently delivered to the nervous system, particularly the central nervous system to which the BBB mechanism prevents drug delivery, and can produce an antisense effect on a target transcriptional product at the delivered site, and a composition comprising the same.
Provided is a double-stranded nucleic acid complex formed by annealing a first nucleic acid strand capable of hybridizing to part of a target transcriptional product, and has an antisense effect on the target transcriptional product, to a second nucleic acid strand comprising a base sequence complementary to the first nucleic acid strand, and is bound to tocopherol or an analog thereof, cholesterol or an analog thereof, or a substituted or unsubstituted C1-30 alkyl group, a substituted or unsubstituted C2-30 alkenyl group, or a substituted or unsubstituted C1-30 alkoxy group.