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DMHAPC-Chol

(Synonyms: Dimethyl Hydroxyethyl Aminopropane Carbamoyl Cholesterol Iodide) 目录号 : GC43503

A cationic cholesterol

DMHAPC-Chol Chemical Structure

Cas No.:794494-38-5

规格 价格 库存 购买数量
1mg
¥428.00
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5mg
¥1,508.00
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10mg
¥2,570.00
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25mg
¥5,893.00
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Sample solution is provided at 25 µL, 10mM.

产品文档

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产品描述

DMHAPC-Chol is a cationic cholesterol. Liposomes containing DMHAPC-chol have been used for DNA plasmid delivery in vitro and in vivo in a B16-F10 mouse xenograft model. Liposomes containing DMHAPC-chol are cytotoxic to B16-F10 cells when used at lipid concentrations greater than 20 µM. DMHAPC-Chol, as part of a lipoplex with DOPE , has also been used to deliver DNA into mouse lung via intratracheal injection, resulting in a heterogeneous distribution in the bronchi and bronchioles, and to deliver VEGF siRNA into A431 and MDA-MB-231 cells, which secrete VEGF.

Chemical Properties

Cas No. 794494-38-5 SDF
别名 Dimethyl Hydroxyethyl Aminopropane Carbamoyl Cholesterol Iodide
Canonical SMILES C[C@H](CCCC(C)C)[C@@]1([H])CC[C@@]2([H])[C@]3([H])CC=C4C[C@@H](OC(NCCC[N+](C)(C)CCO)=O)CC[C@]4(C)[C@@]3([H])CC[C@@]21C
分子式 C35H63N2O3 分子量 559.9
溶解度 DMF: 10 mg/mL,Ethanol: 10 mg/mL,Ethanol:PBS (pH 7.2) (1:6): 0.14 mg/mL 储存条件 Store at -20°C
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储备液的保存方式和期限:-80°C 储存时,请在 6 个月内使用,-20°C 储存时,请在 1 个月内使用。
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溶解性数据

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1 mg 5 mg 10 mg
1 mM 1.786 mL 8.9302 mL 17.8603 mL
5 mM 0.3572 mL 1.786 mL 3.5721 mL
10 mM 0.1786 mL 0.893 mL 1.786 mL
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Research Update

Inhibition of VEGF expression in A431 and MDA-MB-231 tumour cells by cationic lipid-mediated siRNA delivery

J Drug Target 2012 May;20(4):347-54.PMID:22475204DOI:10.3109/1061186X.2012.656645.

In order to promote siRNA transfer in tumour cells, we used an original cationic lipid, synthesized in our laboratory, dimethyl-hydroxyethyl-aminopropane-carbamoyl-cholesterol (DMHAPC-Chol). Liposomes were prepared from this lipid and dioleoylphosphatidylethanolamine (DOPE) in equimolar proportion. Its transfecting capacity was evaluated using ELISA, cell cytometry, and RT-PCR in estimating the silencing effect of VEGF siRNA. This liposome efficiently delivered VEGF siRNA in two human cancer cell lines abundantly secreting VEGF, A431 and MDA-MB-231. Results showed that 50 nM of VEGF siRNA carried by DMHAPC-Chol/DOPE liposomes already silenced more than 90% of VEGF in these cells. A comparative study with two commercial carriers indicated that the inhibition induced by VEGF siRNA transported by cationic DMHAPC-Chol/DOPE liposomes was comparable to that induced by INTERFERin and better than lipofectamine 2000. Moreover, a transfection by a GFP plasmid followed by a GFP siRNA showed that DMHAPC-Chol/DOPE liposomes compared to lipofectamine were less efficient for plasmid but better for siRNA transport. Following one of our previous works concerning cell delivery of plasmid ( Percot et al., 2004 ), the main interest of results presented here resides in the double potential of DMHAPC-Chol/DOPE liposomes to deliver little-sized siRNA as well as large nucleic acids in cells.

A hydroxyethylated cholesterol-based cationic lipid for DNA delivery: effect of conditioning

Int J Pharm 2004 Jun 18;278(1):143-63.PMID:15158957DOI:10.1016/j.ijpharm.2004.03.003.

We have synthesised a novel cholesterol-based cationic lipid to promote DNA transfer in cells. This lipid, dimethyl hydroxyethyl aminopropane carbamoyl cholesterol iodide (DMHAPC-Chol) contains a biodegradable carbamoyl linker and a hydroxyethyl group in the polar amino head moiety and is characterised by NMR. Liposomes prepared from this lipid and dioleoyl phosphatidyl ethanolamine (DOPE) in equimolar proportion showed a weak cytotoxicity as revealed by MTT assays and are efficient to deliver plasmids DNA evaluated by the expression of reporter genes in vitro and in vivo. In this paper, we present an original method to determine the lipid concentration based on the colorimetric detection of the colipid DOPE and the measure of the molar ratio DOPE/cationic lipid in the liposome by FTIR spectroscopy. The liposomes and lipid/DNA complexes structures were characterized by transmission electron microscopy (TEM) and by quasi-elastic light scattering (QLS). TEM indicated that the complexes correspond to aggregates containing globular substructures with liposomes size. The method of immuno-gold labelling was used to detect plasmid in the complex and reveals the presence of DNA inside the aggregates. Transfection results showed efficient DNA transfer depending on the charge ratio and liposomes conditioning. Gel retardation results indicated that at a molar charge ratio between X = 1.5 and X = 2.5 (depending on the liposome conditioning), all DNA was taken by liposomes. We showed that conditioning by freeze-drying (lyophilization) facilitates storage and improves transfection efficiency. When the liposomes were lyophilized prior to DNA addition or when the complexes were subjected to freeze-thawing cycles, the obtained complexes showed a transfection with levels enhanced up to four and five-fold respectively for the lyophilized liposomes and freeze-thawed complexes. NMR was used to characterize the modifications under freezing which showed an effect on 31P spectra.