文獻：利用聚乙烯亞胺共軛陽離子脂質(zhì)體增強*癌藥物在*組織中的定位

鏈接：https://link.springer.com/article/10.1186/1556-276X-9-209

作者：韓熙東邊永善,帽子寧貞申秉哲

節(jié)選：

基于脂質(zhì)體的藥物遞送系統(tǒng)在癌癥*中擁有巨大的潛力。然而，為了增強有效載荷的定位，需要一種有效的脂質(zhì)體系統(tǒng)性遞送至*組織的方法。本研究開發(fā)了由聚乙烯亞胺 (PEI) 共軛二硬脂酰甘油磷酸乙醇胺 (DSPE) 組成的陽離子脂質(zhì)體，作為一種增強的局部藥物遞送系統(tǒng)。DSPE-PEI 脂質(zhì)體的粒徑為 130 ± 10 nm，通過將陽離子 PEI 引入脂質(zhì)體膜，脂質(zhì)體的 zeta 電位從 -25 mV 提高至 30 mV。*細胞對 DSPE-PEI 脂質(zhì)體的細胞內(nèi)攝取率比 DSPE 脂質(zhì)體高 14 倍。將脂質(zhì)體注射到荷瘤小鼠體內(nèi)后，與DSPE脂質(zhì)體相比，DSPE-PEI脂質(zhì)體在*組織中表現(xiàn)出更高且更持久的定位。綜上所述，我們的研究結(jié)果表明，DSPE-PEI脂質(zhì)體有望成為一種有效的藥物載體，通過*內(nèi)注射增強*癌藥物在*組織中的細胞攝取和定位。

Liposome-based drug delivery systems hold great potential for cancer therapy. However, to enhance the localization of payloads, an efficient method of systemic delivery of liposomes to tumor tissues is required. In this study, we developed cationic liposomes composed of polyethylenimine (PEI)-conjugated distearoylglycerophosphoethanolamine (DSPE) as an enhanced local drug delivery system. The particle size of DSPE-PEI liposomes was 130?±?10 nm and the zeta potential of liposomes was increased from -25 to 30 mV by the incorporation of cationic PEI onto the liposomal membrane. Intracellular uptake of DSPE-PEI liposomes by tumor cells was 14-fold higher than that of DSPE liposomes. After intratumoral injection of liposomes into tumor-bearing mice, DSPE-PEI liposomes showed higher and sustained localization in tumor tissue compared to DSPE liposomes. Taken together, our findings suggest that DSPE-PEI liposomes have the potential to be used as effective drug carriers for enhanced intracellular uptake and localization of anticancer drugs in tumor tissue through intratumoral injection.

西安pg電子官方生物提供相關(guān)產(chǎn)品：

DSPE-PEG-αCD20mAb（二硬脂酰基磷脂酰乙醇胺-聚乙二醇-*靶向蛋白)

DSPE-PEG-Raltitrexed

DPPE-PEG-Mal

Cy3-DSPE

DSPE-PEG-ANTPCGPYTHDCPVKR（二硬脂�；�磷脂酰乙醇胺-聚乙二醇-*靶向蛋白)

DSPE-PEG-lactosyl

DOPE-PEG-CH2COOH

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