DPPC (129Y83) is a phosphoglyceride that can be used in liposome preparation.
When to evaluate the effect of multilamellar vesicles (MLVs) of 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC (129Y83)) in co-culture with in vitro-produced bovine embryos (IVPEs). Incubation (24 and 48 h) did not impair the MLV structure but affected the average diameter. The rate of blastocyst production was not reduced, demonstrating the nontoxicity of the MLVs even at 2.0 mmol/L[1]. The interactions in cholesterol/DPPC (129Y83)/APC films were found to be weaker than those in the cholesterol/DPPC (129Y83) system, serving as a model of healthy cell membranes, thus proving that the incorporation of APCs is, from a thermodynamic point of view, unfavorable for binary cholesterol/DPPC (129Y83) monolayers[2]. To elucidate the interaction of a cationic surfactant synthesized, investigations involving Nα-benzoyl-arginine decyl amide (Bz-Arg-NHC10), and model membranes composed by 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC (129Y83)) were done. As the concentration of Bz-Arg-NHC10 increased, the main transition temperature of DPPC (129Y83) slightly decreased[3]. MPOx copolymers are proved to modify both the size and lamellarity of DPPC (129Y83) liposomes. The gradient copolymer with higher hydrophilic content induces shrinkage of the uni- and bi-lamellar DPPC (129Y83) vesicles[4]. DPPC (129Y83) liposomes enhanced the pulmonary absorption of unencapsulated free insulin;although unencapsulated free insulin spreads throughout the alveolar mucus layer, the concentration of insulin released near the absorption surface is increased by the encapsulation of insulin into DPPC (129Y83) liposomes and the absorption efficiency is also increased[5]. When show how oppositely charged gold nanoparticles (Au-NPs) interact with monolayers of the zwitterionic DPPC (129Y83). For the zwitterionic DPPC (129Y83), on the other hand, significant effects only occurred for negatively charged NPs, including a decrease in elasticity[6].
DPPC (129Y83)-liposome would serve effectively as a delivery vehicle for inducing immune responses against GSL antigen[7].
References:
[1]. De Rossi H, Bortoliero Costa C, et,al. Modulating the lipid profile of blastocyst cell membrane with DPPC multilamellar vesicles. Artif Cells Nanomed Biotechnol. 2022 Dec;50(1):158-167. doi: 10.1080/21691401.2022.2088545. PMID: 35713365.
[2]. Wn?trzak A, L?tka K, et,al. Interactions of alkylphosphocholines with model membranes-the Langmuir monolayer study. J Membr Biol. 2013 Jun;246(6):453-66. doi: 10.1007/s00232-013-9557-4. Epub 2013 May 15. PMID: 23673723; PMCID: PMC3682106.
[3]. Hermet M, Elisa Fait M, et,al. Interaction of cationic surfactants with DPPC membranes: effect of a novel Nα-benzoylated arginine-based compound. Amino Acids. 2021 Apr;53(4):609-619. doi: 10.1007/s00726-021-02964-2. Epub 2021 Mar 12. PMID: 33710434.
[4]. Papagiannopoulos A, Pippa N, et,al. Lamellarity and size distributions in mixed DPPC/amphiphilic poly(2-oxazoline) gradient copolymer vesicles and their temperature response. Chem Phys Lipids. 2021 Jan;234:105008. doi: 10.1016/j.chemphyslip.2020.105008. Epub 2020 Nov 9. PMID: 33181095.
[5]. Chono S, Togami K, et,al. Aerosolized liposomes with dipalmitoyl phosphatidylcholine enhance pulmonary absorption of encapsulated insulin compared with co-administered insulin. Drug Dev Ind Pharm. 2017 Nov;43(11):1892-1898. doi: 10.1080/03639045.2017.1353521. Epub 2017 Jul 24. PMID: 28689439.
[6]. Torrano AA, Pereira ?S, et,al. Probing the interaction of oppositely charged gold nanoparticles with DPPG and DPPC Langmuir monolayers as cell membrane models. Colloids Surf B Biointerfaces. 2013 Aug 1;108:120-6. doi: 10.1016/j.colsurfb.2013.02.014. Epub 2013 Mar 5. PMID: 23528608.
[7]. Uemura A, Watarai S, et,al.Induction of immune responses against glycosphingolipid antigens: comparison of antibody responses in mice immunized with antigen associated with liposomes prepared from various phospholipids. J Vet Med Sci. 2005 Dec;67(12):1197-201. doi: 10.1292/jvms.67.1197. PMID: 16397376.
DPPC (129Y83)是一种磷酸甘油酯,可用于制备脂质体。
何时评估 1,2-二棕榈酰-sn-甘油-3-磷酸胆碱 (DPPC (129Y83)) 的多层囊泡 (MLV) 在与体外产生的牛胚胎 (IVPE) 共培养中的作用。孵化(24 和 48 小时)不会损害 MLV 结构,但会影响平均直径。即使在 2.0 mmol/L[1] 时,囊胚的产生率也没有降低,证明了 MLVs 的无毒性。发现胆固醇/DPPC (129Y83)/APC 膜中的相互作用弱于胆固醇/DPPC (129Y83) 系统中的相互作用,作为健康细胞膜的模型,从而证明 APC 的掺入是从热力学观点,对二元胆固醇/DPPC (129Y83) 单分子层不利[2]。为了阐明合成的阳离子表面活性剂的相互作用,研究涉及 Nα-苯甲酰基-精氨酸癸基酰胺 (Bz-Arg-NHC10),以及由 1,2-二棕榈酰-sn-甘油-3-磷酸胆碱 (DPPC (129Y83)) 组成的模型膜) 完成了。随着Bz-Arg-NHC10浓度的增加,DPPC(129Y83)的主要转变温度略有下降[3]。 MPOx 共聚物被证明可以改变 DPPC (129Y83) 脂质体的大小和层状结构。具有较高亲水含量的梯度共聚物引起单层和双层 DPPC (129Y83) 囊泡的收缩[4]。 DPPC(129Y83)脂质体增强了未包封的游离胰岛素的肺部吸收;尽管未包封的游离胰岛素遍布肺泡粘液层,但由于胰岛素被包封到DPPC(129Y83)脂质体中,吸收面附近释放的胰岛素浓度增加效率也得到提高[5]。当显示带相反电荷的金纳米粒子 (Au-NP) 如何与两性离子 DPPC (129Y83) 的单层相互作用时。另一方面,对于两性离子 DPPC (129Y83),仅带负电的 NP 会产生显着影响,包括弹性降低[6]。
DPPC (129Y83)-脂质体可有效作为诱导针对 GSL 抗原的免疫应答的递送载体[7]。
















