Page 76 - 《中国药房》2024年5期
P. 76
双去甲氧基姜黄素对小鼠脑神经母瘤细胞的促神经分化作用及
机制研究
Δ
2
2
2
2
王嘉欣 ,房红志 ,吴 敏 ,阳泽界 ,许文博 ,张 双 ,李莎莉 ,唐根云 1, 2, 3 # (1.南华大学衡阳医学院细胞与遗
1*
2
2
传研究所,湖南 衡阳 421001;2.湖南医药学院基础医学院,湖南 怀化 418000;3.脑与神经内分泌疾病湖南
省高等学校重点实验室,湖南 怀化 418000)
中图分类号 R965 文献标志码 A 文章编号 1001-0408(2024)05-0578-06
DOI 10.6039/j.issn.1001-0408.2024.05.12
摘 要 目的 研究姜黄素衍生物双去甲氧基姜黄素(BC)对小鼠脑神经母瘤细胞 Neuro-2a(N2a)的促神经分化作用及机制。
方法 采用MTT法检测BC(1、2、4、6、8、10 μmol/L)对N2a细胞存活率的影响,确定药物处理浓度范围。设对照组、视黄酸(RA)组
(10 μmol/L)和BC组(1、2、4 μmol/L),培养48、72 h后,对分化细胞的神经突起长度进行测量并计算细胞分化率;采用Western blot
法检测4 μmol/L BC作用5、15、30、60、120 min后细胞中蛋白激酶B(Akt)、细胞外调节蛋白激酶1/2(ERK1/2)、p38丝裂原活化蛋
白激酶(p38)蛋白的磷酸化水平。以抑制剂LY294002(LY)和PD98059(PD)干预后,进一步验证BC对Akt和ERK蛋白磷酸化水
平及促神经分化的影响。结果 根据MTT实验确定后续诱导细胞分化的BC浓度为1、2、4 μmol/L。分化48 h后,与对照组比较,
RA组和BC 1、2、4 μmol/L组细胞分化率及BC 4 μmol/L组细胞神经突起长度均显著升高/增加(P<0.05或P<0.01);BC继续诱导
分化至72 h后,与对照组比较,RA组细胞分化率和神经突起长度、BC 4 μmol/L组细胞分化率和BC 2 μmol/L组细胞神经突起长
度均显著升高/增加(P<0.05或P<0.01)。与0 min组比较,BC 4 μmol/L作用5、15、30、60、120 min组细胞中Akt、ERK1/2、p38蛋
白的磷酸化水平均有不同程度升高,部分差异有统计学意义(P<0.05或P<0.01)。加入抑制剂LY/PD后,与BC组比较,PD+BC
组细胞中 ERK1/2 蛋白的磷酸化水平显著降低(P<0.01),LY 组、LY+BC 组、PD 组、PD+BC 组细胞分化率均显著降低(P<0.01)。
结论 BC可以促进N2a细胞分化,增加细胞分化率和神经突起长度,其机制可能与激活MEK/ERK和PI3K/Akt信号通路有关。
关键词 双去甲氧基姜黄素;脑神经母瘤细胞;促神经分化;阿尔茨海默病;神经营养活性
Effects of bisdemethoxycurcumin promoting neuronal differentiation of neuroblastoma cells in mice and its
mechanism
WANG Jiaxin ,FANG Hongzhi ,WU Min ,YANG Zejie ,XU Wenbo ,ZHANG Shuang ,LI Shali ,TANG
2
2
2
1
2
2
2
Genyun 1, 2, 3 (1. Institute of Cytology and Genetics, Hengyang Medical School, University of South China,
Hunan Hengyang 421001, China;2. School of Basic Medicine, Hunan University of Medicine, Hunan Huaihua
418000, China;3. Key Laboratory of Brain and Neuroendocrine Diseases, Colleges of Hunan Province, Hunan
Huaihua 418000, China)
ABSTRACT OBJECTIVE To study the effects of the curcumin derivative bisdemethoxycurcumin (BC) promoting neuronal
differentiation of neuroblastoma cells Neuro-2a (N2a) in mice and its mechanism. METHODS The effects of BC (1, 2, 4, 6, 8,
10 μmol/L) on the viability of N2a cells were detected by MTT assay to determine the concentration range of drug treatment. The
control group, retinoic acid (RA) group (10 μmol/L) and BC groups (1, 2 and 4 μmol/L) were set up, and the length of neural
protrusions of the differentiated cells was measured and the cell differentiation rate was calculated after 48 h and 72 h of culture.
Compared with 0 min group, Western blot was used to detect the phosphorylation levels of protein kinase B (Akt), extracellular-
signal regulated kinase 1/2 (ERK1/2), and p38 mitogen-activated protein kinase (p38) proteins in cells treated by 4 μmol/L BC for
5, 15, 30, 60, 120 min. After intervention with inhibitors LY294002 (LY) and PD98059 (PD), the effects of BC on Akt and
ERK1/2 protein phosphorylation levels and promoting neural differentiation were further validated. RESULTS According to the
MTT experiment, the BC concentrations for subsequent induction of cell differentiation were determined to be 1, 2, and 4 μmol/L.
After 48 hours of differentiation, compared with the control
Δ 基金项目 湖 南 省 大 学 生 创 新 创 业 训 练 计 划 项 目(No.
group, the cell differentiation rate in RA group and BC 1, 2
S202112214017) and 4 μmol/L groups, the length of cellular neural processes
*第一作者 硕士研究生。研究方向:神经药理学。E-mail:
wjxhhxx413@163.com in the BC 4 μmol/L group significantly increased (P<0.05 or
# 通信作者 副教授,博士。研究方向:神经药理学。E-mail: P<0.01);after inducing differentiation of BC for 72 hours,
hnyyxy_tanggenyun@126.com compared with the control group, the cell differentiation rate
· 578 · China Pharmacy 2024 Vol. 35 No. 5 中国药房 2024年第35卷第5期