Biolabile cationic lipids were developed for efficient intracellular delivery of DNA and siRNA. The compounds have been designed starting from the membrane lipid DOPC in a way they may loose their cationic charge when exposed to an acidic and/or enzymatic stimulus, such as those met during the journey of a lipoplex in biological media. They demonstrated remarkable efficiency to deliver DNA in various cell lines (BHK-21, Calu-3, NCI-H292, and A549), with no significant cytotoxicity. Furthermore, two of the compounds (carbonate-based DOPC derivatives) revealed able to deliver small interfering RNA in U87Luc and A549Luc cancer cells and to mediate a selective 70–80% knockdown of the stably transfected luciferase gene. The results show that the described bioresponsive cationic lipids have high DNA and siARN delivery activity which is encouraging in view of delivering a therapeutic nucleic acid to pulmonary tissues in vivo.
CONJUGATE-BASED ANTIFUNGAL AND ANTIBACTERIAL PRODRUGS
申请人:Bapat Abhijit S.
公开号:US20140364595A1
公开(公告)日:2014-12-11
The invention provides conjugate-based antifungal or antibacterial prodrugs formed by coupling at least one anti-fungal agent or antibacterial agent with at least one linker and/or carrier. The prodrugs are of formula: (i) (AFA)
m
-X-(L)
n
; (ii) [(AFA)
m′
-X]
p
-L; (iii) AFA-[X-(L)
n′
]
q
; or (iv) (AFA)
m″
-X, wherein: AFA is an antifungal agent or an antibacterial agent; L is a carrier; X is a linker; m ranges from 1 to 10; n ranges from 2 to 10; m′ is 1 to 10; p is 1 to 10; n′ is 1 to 10; and q is 1 to 10, provided that q′ and n are not both 1; and m″ is 1 to 10. The invention also provides nanoparticles comprising the conjugate-based prodrugs. Additionally, the invention also provides non-conjugated antifungal and antibacterial agents in the form of nanoparticles.
该发明提供了由至少一种抗真菌剂或抗菌剂与至少一种连接剂和/或载体偶联形成的基于共轭的抗真菌或抗菌前药。这些前药的公式为:(i) (AFA)
m
-X-(L)
n
; (ii) [(AFA)
m′
-X]
p
-L; (iii) AFA-[X-(L)
n′
]
q
; 或 (iv) (AFA)
m″
-X,其中:AFA是抗真菌剂或抗菌剂;L是载体;X是连接剂;m范围从1到10;n范围从2到10;m′为1到10;p为1到10;n′为1到10;q为1到10,前提是q'和n不同时为1;m″为1到10。该发明还提供了包含基于共轭的前药的纳米粒子。此外,该发明还提供了以纳米粒子形式的非共轭抗真菌和抗菌剂。
[EN] PHOSPHOLIPID-DETERGENT CONJUGATES AND USES THEREOF<br/>[FR] CONJUGUÉS DE PHOSPHOLIPIDE-DÉTERGENT ET LEURS UTILISATIONS
申请人:UNIV STRASBOURG
公开号:WO2013014073A1
公开(公告)日:2013-01-31
The invention relates to novel compounds, in particular novel O-substituted phospholipids that are useful for the in vitro and in vivo delivery of drugs as well as nucleic acids into cells. The invention also relates to pharmaceutical compositions and supramolecular complexes comprising said compounds and the use of these compounds in therapeutic treatment, in particular in gene therapy.
(EN) (1R,5S,6S)-2-[(1-(1,3-thiazolin-2-yl)azetidin-3-yl)thio]-6-[(R)-1-hydroxyethyl]-1-methyl-carbapen-2-em-3-carboxylic acid ester derivatives of formula (I) wherein R1 is a hydrogen atom or a lower alkyl group; R2 is an alkyl group which may be substituted by a cycloalkyl group having 4 to 7 carbon atoms which may further be substituted by a lower alkyl group, or is a cycloalkyl group having 4 to 7 carbon atoms which may be substituted by a lower alkyl group; and n is 0 or 1. The compounds are highly absorbable through digestive tract and are rapidly converted into the active compound in the body to show a strong antibacterial activity.(FR) Dérivés d'ester d'acide (1R,5S,6S)-2-[(1-(1,3-thiazolin-2-yl)azétidin-3-yl)thio]-6-[(R)-1-hydroxyéthyl]-1-méthyl-carbapen-2-em-3-carboxylique de formule (I), dans laquelle R1 est un atome d'hydrogène ou un groupe alkyle inférieur; R2 est un groupe alkyle pouvant être substitué par un groupe cycloalkyle à 4-7 atomes de carbone, pouvant à son tour être substitué par un groupe alkyle inférieur, ou est un groupe cycloalkyle à 4-7 atomes de carbone pouvant être substitué par un groupe alkyle inférieur, et n vaut 0 ou 1. Ces composés subissent une absorption élevée dans le système digestif et sont rapidement transformés en composés actifs dans le corps, où ils présentent une forte activité antibactérienne.
PHOSPHOLIPID-DETERGENT CONJUGATES AND USES THEREOF
申请人:Lebeau Luc
公开号:US20140243391A1
公开(公告)日:2014-08-28
The invention relates to novel compounds, in particular novel O-substituted phospholipids that are useful for the in vitro and in vivo delivery of drugs as well as nucleic acids into cells. The invention also relates to pharmaceutical compositions and supramolecular complexes comprising said compounds and the use of these compounds in therapeutic treatment, in particular in gene therapy.