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紫杉醇PLGA纳米粒的表征及体外抗肿瘤作用研究
Δ
王晓静 ,郭子硕,张海桐,陈宛灵,李加玲,杜守颖,李鹏跃(北京中医药大学中药学院,北京 102488)
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中图分类号 R944;R979.1 文献标志码 A 文章编号 1001-0408(2024)22-2721-05
DOI 10.6039/j.issn.1001-0408.2024.22.03
摘 要 目的 表征紫杉醇纳米粒(PTX-PLGA-NPs),并评价其对Lewis肺癌细胞的体外抑制作用。方法 对以乳化溶剂挥发法所
制PTX-PLGA-NPs的粒径、多分散性指数(PDI)、Zeta电位、微观形态、包封率、载药量、紫外-可见光吸收特性、稳定性等进行表征;
以小鼠Lewis肺癌细胞为对象,以PTX对照品为参照,分别采用CCK-8法、Calcein-AM/PI双染法检测PTX-PLGA-NPs的细胞毒性
和体外杀伤活性,分别采用 Annexin Ⅴ-FITC/PI 染色法、PI 染色法评估 PTX-PLGA-NPs 对细胞凋亡及周期的影响。结果 PTX-
PLGA-NPs呈类球形,平均粒径为(172.03±0.95)nm,PDI为0.098±0.012,Zeta电位为(-1.76±0.02)mV;包封率和载药量分别为
(52.32±0.66)%、(7.07±0.18)%,紫外-可见光吸收特征不受载体聚乳酸-羟基乙酸共聚物的影响;4 ℃下避光放置7 d时,其粒径无
明显变化,平均PDI(放置1、2、4、7 d)均小于0.3。与PTX对照品组相比,PTX-PLGA-NPs组有更多细胞处于死亡状态,其存活率
(当PTX质量浓度为11.2 μg/mL时)显著降低,凋亡率和G2期细胞比例均显著升高(P<0.05)。结论 所制PTX-PLGA-NPs粒径均
一、分散均匀、性质稳定,对肺癌细胞的体外杀伤作用较PTX强。
关键词 紫杉醇;聚乳酸-羟基乙酸共聚物;纳米粒;表征;Lewis肺癌细胞;体外抗肿瘤作用
Characterization of paclitaxel-PLGA nanoparticles and their antitumor effects in vitro
WANG Xiaojing,GUO Zishuo,ZHANG Haitong,CHEN Wanling,LI Jialing,DU Shouying,LI Pengyue(School
of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China)
ABSTRACT OBJECTIVE To characterize paclitaxel nanoparticles (PTX-PLGA-NPs) and evaluate their in vitro inhibitory effect
on Lewis lung cancer cells. METHODS The PTX-PLGA-NPs prepared by the emulsion-solvent evaporation method were
characterized in terms of particle size, polydispersity index (PDI), Zeta potential, microscopic morphology, encapsulation
efficiency, drug loading, ultraviolet-visible absorption characteristics and stability. Using mouse Lewis lung cancer cells as the
subjects and paclitaxel reference substance as the control, the cytotoxicity and in vitro killing activity of PTX-PLGA-NPs were
detected using CCK-8 method and Calcein-AM/PI double staining method, respectively. The effects of PTX-PLGA-NPs on cell
apoptosis and cell cycle were assessed by Annexin Ⅴ-FITC/PI staining method and PI staining method, respectively. RESULTS
PTX-PLGA-NPs were spherical with an average particle size of (172.03±0.95) nm, PDI of 0.098±0.012, and Zeta potential of
(-1.76±0.02) mV. The encapsulation efficiency and drug loading were (52.32±0.66)% and (7.07±0.18)%, respectively, and
the ultraviolet-visible absorption characteristics were not affected by the carrier polylactic-co-glycolic acid. When stored in the dark
at 4 °C for 7 days, no significant change was noted in particle size, and the average PDI (after 1, 2, 4 and 7 days of storage) was under
0.3. Compared with the paclitaxel reference substance group, the PTX-PLGA-NPs group had more cells in a state of death, the
survival rate (at the PTX concentration of 11.2 μg/mL) was significantly decreased, and both the apoptosis rate and the proportion of G2
phase cells were significantly increased (P<0.05). CONCLUSIONS The prepared PTX-PLGA-NPs indicate homogeneity in
particle size, uniform dispersion, stable properties, and stronger in vitro killing effect on lung cancer cells than PTX.
KEYWORDS paclitaxel; polylactic-co-glycolic acid; nanoparticles; characteristics; Lewis lung cancer cells; antitumor effects in vitro
全球每年新发恶性肿瘤病例高达 1 930 万,其中近 癌可分为小细胞肺癌和非小细胞肺癌(non-small cell
1 000 万新发病例因此死亡,可见恶性肿瘤已成为全球 lung cancer,NSCLC)两大类,其中 NSCLC 患者约占肺
患者死亡的主要原因之一 [1―2] 。在我国,肺癌是常见的 癌患者总数的 85%,其 5 年生存率仅为 15%,大多数
NSCLC患者在确诊时已无法切除或发生转移 [4―5] 。
[3]
恶性肿瘤,其发病率和病死率均居恶性肿瘤之首 。肺
紫杉醇(paclitaxel,PTX)是从红豆杉科植物红豆杉
Δ 基金项目 国家自然科学基金项目(No.82274111,No.81803738) 的干燥根、枝叶及树皮中提取的一种二萜类生物碱,是
*第一作者 硕士研究生。研究方向:中药新剂型与新技术。E-
目前最有效的抗肿瘤药物之一,可有效治疗卵巢癌、肺
mail:wxjyjpajy214@163.com [6]
# 通信作者 副教授,硕士生导师,博士。研究方向:中药新剂型与 癌、卡波西肉瘤、宫颈癌和胰腺癌等多种恶性肿瘤 。
新技术。电话:010-53912123。E-mail:pengyuelee@126.com 1999 年,PTX 被美国 FDA 批准用于 NSCLC 的治疗,现
中国药房 2024年第35卷第22期 China Pharmacy 2024 Vol. 35 No. 22 · 2721 ·