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桃叶珊瑚苷对前列腺癌的抑制作用及机制的体内外研究
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闫本纯 1, 2* ,何春艳 ,李宏伟 ,南锡浩 ,张智慧 ,邸彦橙 ,田 河 (1.牡丹江医学院附属红旗医院泌尿
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外科,黑龙江 牡丹江 157000;2.牡丹江医学院第一临床医学院,黑龙江 牡丹江 157011)
中图分类号 R965 文献标志码 A 文章编号 1001-0408(2024)13-1618-06
DOI 10.6039/j.issn.1001-0408.2024.13.13
摘 要 目的 探讨桃叶珊瑚苷(AU)调节蛋白激酶B(Akt)/双微体同源基因2(MDM2)/p53信号通路对前列腺癌(PC)细胞增殖
和肿瘤生长的影响。方法 将前列腺癌细胞PC3分为对照组、50 μmol/L AU组、100 μmol/L AU组、SC79(Akt激活剂)组(5 μmol/L)、
100 μmol/L AU+SC79组,考察各组细胞的克隆能力和增殖能力,检测细胞凋亡率及细胞中Akt/MDM2/p53信号通路相关蛋白表
达。建立异种移植肿瘤裸鼠模型,并将建模成功的裸鼠分为肿瘤组、AU 组(80 mg/kg)、SC79 组(50 mg/kg)和 AU+SC79 组(80
mg/kg AU+50 mg/kg SC79 ),每组 10 只,每天给药 1 次,共 21 d。末次给药后,称定肿瘤质量,检测肿瘤组织中细胞核相关抗原
(Ki-67)及Akt/MDM2/p53信号通路相关蛋白表达。结果 细胞实验中,与对照组比较,50 μmol/L AU组、100 μmol/L AU组细胞克
隆形成数、增殖率和Akt、MDM2蛋白的磷酸化水平均显著减少/降低(P<0.05),细胞凋亡率、p53蛋白表达水平均显著升高(P<
0.05),但SC79组各指标变化趋势相反(P<0.05);100 μmol/L AU+SC79组与100 μmol/L AU组比较,克隆形成数、增殖率和Akt、
MDM2蛋白的磷酸化水平均显著增加/升高(P<0.05),细胞凋亡率、p53蛋白表达水平均显著降低(P<0.05),但与SC79组比较各
指标变化趋势相反(P<0.05)。体内实验中,与肿瘤组比较,AU组裸鼠的肿瘤质量及组织中Ki-67阳性表达和Akt、MDM2蛋白的
磷酸化水平均显著降低(P<0.05),p53 蛋白表达水平显著升高(P<0.05),但 SC79 组裸鼠的上述指标变化趋势相反(P<0.05);
AU+SC79组与AU组比较,裸鼠的肿瘤质量及组织中Ki-67阳性表达和Akt、MDM2蛋白的磷酸化水平均显著升高(P<0.05),p53
蛋白表达水平显著降低(P<0.05),但其与SC79组比较各指标变化趋势相反(P<0.05)。结论 AU可通过抑制Akt/MDM2/p53信
号通路从而抑制PC细胞增殖及肿瘤生长。
关键词 桃叶珊瑚苷;Akt/MDM2/p53信号通路;前列腺癌;细胞增殖;肿瘤生长
In vivo and in vitro study on the inhibitory effects and mechanism of aucubin on prostate cancer
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YAN Benchun ,HE Chunyan ,LI Hongwei ,NAN Xihao ,ZHANG Zhihui ,DI Yancheng ,TIAN He 1, 2
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(1. Dept. of Urinary Surgery, Hongqi Hospital Affiliated to Mudanjiang Medical University, Heilongjiang
Mudanjiang 157000, China;2. First Clinical Medical College, Mudanjiang Medical University, Heilongjiang
Mudanjiang 157011, China)
ABSTRACT OBJECTIVE To investigate the effects of aucubin (AU) on the proliferation and tumor growth of prostate cancer
(PC) cells by regulating the protein kinase B (Akt)/murine double minute2 (MDM2)/p53 signaling pathway. METHODS Prostate
cancer cell PC3 were separated into control group, 50 μmol/L AU group, 100 μmol/L AU group, SC79 (Akt activator) group (5
μmol/L), and 100 μmol/L AU+SC79 group. The cell cloning and proliferation ability were investigated; the rate of cell apoptosis
and the expressions of Akt/MDM2/p53 signaling pathway-related protein were detected. Meanwhile, xenograft tumor models of
nude mice were constructed and separated into tumor group, AU group (80 mg/kg), SC79 group (50 mg/kg), and AU+SC79 group
(80 mg/kg AU+50 mg/kg SC79), with 10 mice in each group. They were given relevant medicine, once a day, for 21 d. After the
last medication, tumor weight was determined, and the expressions of nucleus-associated antigen (Ki-67) and Akt/MDM2/p53
signaling pathway-related protein were detected in tumor tissue. RESULTS In the cell experiment, compared with control group,
the cell clonal formation number, proliferation rate and phosphorylation levels of Akt and MDM2 protein in 50 μmol/L AU and 100
μmol/L AU groups were significantly decreased (P<0.05), while the cell apoptosis rate and p53 protein expression levels were
significantly increased (P<0.05); however, the change trend of each index in SC79 group was opposite (P<0.05). Compared
with 100 μmol/L AU group, the cell clonal formation number, proliferation rate and phosphorylation levels of Akt and MDM2
protein in 100 μmol/L AU+SC79 group were significantly increased (P<0.05), while cell apoptosis rate and p53 protein
expression levels were significantly decreased (P<0.05); however, compared with SC79 group, the changing trend of indexes was
the opposite (P<0.05). In the in vivo experiment, compared
Δ 基金项目 黑龙江省省属高等学校基本科研业务费科研项目
with the tumor group, the tumor mass and Ki-67 positive
(No.2020-KYYWFMY-0030) expression and the phosphorylation levels of Akt and MDM2
*第一作者 主治医师,硕士。研究方向:泌尿生殖系统肿瘤。电
话:0453-6602102 protein in nude mice of AU group were significantly decreased
# 通信作者 副主任医师,硕士。研究方向:泌尿肿瘤与结石的基 (P<0.05), and the expression level of p53 protein was
础及临床。电话:0453-6602102。E-mail:rfrs08@163.com significantly increased (P<0.05), but the changing trend of
· 1618 · China Pharmacy 2024 Vol. 35 No. 13 中国药房 2024年第35卷第13期