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·药学研究·
PI3K在舒尼替尼致hiPSC-CMs收缩功能障碍中的作用
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李从欣 ,刘国强 ,刘 洋 ,张之晗 ,阎 伟 ,梁春慧 (1.河北医科大学第三医院药剂科,石家庄 050051;
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2.河北医科大学第四医院临床营养科,石家庄 050011)
中图分类号 R965 文献标志码 A 文章编号 1001-0408(2023)02-0139-05
DOI 10.6039/j.issn.1001-0408.2023.02.03
摘 要 目的 研究磷脂酰肌醇-3-激酶(PI3K)在舒尼替尼致心肌收缩功能障碍中的作用。方法 以人源诱导型多能干细胞来源
的心肌细胞(hiPSC-CMs)为研究对象,以不同浓度[0(对照)、0.5、1、3、5、10 μmol/L]舒尼替尼干预hiPSC-CMs 24 h后,采用Cardio‐
Excyte 96系统检测细胞收缩力,并计算半数抑制浓度(IC50 );检测舒尼替尼(3.14 μmol/L)对细胞收缩频率、钙瞬变幅度、钙瞬变恢
复时程以及心房钠尿肽(ANP)、脑钠肽(BNP)、β-肌凝蛋白重链(β-MHC) mRNA表达水平的影响;以PI3K的激活剂3,4,5-三磷酸
磷脂酰肌醇(PIP3,1 μmol/L)和舒尼替尼共同干预hiPSC-CMs,考察PI3K在舒尼替尼致心肌收缩功能障碍中的作用。结果 舒尼
替尼对 hiPSC-CMs 收缩力的抑制作用有浓度依赖趋势,IC50值为 3.14 μmol/L。以 3.14 μmol/L舒尼替尼干预后,hiPSC-CMs 的收
缩频率和钙瞬变幅度均显著降低(P<0.05或P<0.01),钙瞬变恢复时程显著延长(P<0.05),ANP、BNP、β-MHC mRNA表达水平
均显著升高(P<0.01);PIP3激活PI3K后,hiPSC-CMs收缩力显著升高(P<0.01)。结论 激活PI3K活性是改善舒尼替尼致心肌毒
性的潜在分子机制。
关键词 舒尼替尼;收缩功能障碍;心脏毒性;磷脂酰肌醇-3-激酶;人源诱导型多能干细胞来源的心肌细胞
Role of PI3K in systolic dysfunction of hiPSC-CMs induced by sunitinib
LI Congxin ,LIU Guoqiang ,LIU Yang ,ZHANG Zhihan ,YAN Wei ,LIANG Chunhui(1. Dept. of Pharmacy,
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the Third Hospital of Hebei Medical University, Shijiazhuang 050051, China;2. Dept. of Clinical Nutrition, the
Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China)
ABSTRACT OBJECTIVE To study the role of phosphatidylinositol-3-kinase (PI3K) on sunitinib-induced myocardial systolic
dysfunction. METHODS Using human-induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMS) as objects, the
contractile force of cardiomyocytes was measured by CardioExcyte 96 system, and IC50 of sunitinib was calculated after hiPSC-
CMS were treated with sunitinib at different concentrations [0 (control), 0.5, 1, 3, 5, 10 μmol/L] for 24 hours. The effects of
sunitinib (3.14 μmol/L) on the contractile frequency of cardiomyocytes, calcium transient amplitude and calcium transient recovery
time course, mRNA expression of myocardial injury markers atrial natriuretic peptide (ANP), brain natriuretic peptide (BNP) and
β-myosin heavy chain (β-MHC) were detected. PI3K activator 3,4,5-triphosphate phos-phatidylinositol (PIP3, 1 μmol/L) and
sunitinib were used to intervene in hiPSC-CMs jointly, so as to investigate the role of PI3K in the myocardial systolic dysfunction
induced by sunitinib. RESULTS Sunitinib inhibited the contractile force of hiPSC-CMs in a concentration-dependent manner. IC50 of
sunitinib was 3.14 μmol/L. After intervention with 3.14 μmol/L sunitinib, the contractile frequency of hiPSC-CMs and calcium
transient amplitude were decreased significantly (P<0.05 or P<0.01); the duration of calcium transient recovery was prolonged
significantly (P<0.05), and mRNA expressions of ANP, BNP and β-MHC were significantly increased (P<0.01). After PI3K
was activated with PIP3, the contractile force of hiPSC-CMs was increased significantly (P<0.01). CONCLUSIONS Activating
PI3K activity is a potential molecular mechanism to improve myocardial toxicity induced by sunitinib.
KEYWORDS sunitinib; systolic dysfunction; cardiotoxicity; phosphatidylinositol-3-kinase; human induced pluripotent stem cell-
derived cardiomyocytes
Δ 基金项目 国家自然科学基金资助项目(No.82003878);河北省
小分子酪氨酸激酶抑制剂(tyrosine kinase inhibi‐
自然科学基金资助项目(No.H2021206026,No.H2020206554);河北省
高等学校科学研究青年拔尖人才项目(No.BJ2021053);河北省药学会 tors,TKIs)在临床应用广泛且效果显著,对提高肿瘤患
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医院药学科研项目(No.2020-Hbsyxhms0018) 者存活率、改善其生存质量具有重要意义 。然而,临床
*第一作者 主管药师,硕士生导师,博士。研究方向:心血管药理 实践显示,部分TKIs具有明显的心脏毒性,主要表现为
毒理学、肿瘤心脏病学。E-mail:licongxin21@126.com
QT间期延长、高血压、心肌肥厚、左室收缩功能障碍等,
# 通信作者 副主任药师,硕士。研究方向:临床药学。E-mail:
drchunhuiliang@126.com 严重者可引发心力衰竭,甚至影响肿瘤患者的治疗计划
中国药房 2023年第34卷第2期 China Pharmacy 2023 Vol. 34 No. 2 · 139 ·