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1.河北医科大学第三医院药剂科,石家庄 050051
2.河北医科大学第四医院临床营养科,石家庄 050011
主管药师,硕士生导师,博士。研究方向:心血管药理毒理学、肿瘤心脏病学。E-mail:licongxin21@126.com
副主任药师,硕士。研究方向:临床药学。E-mail:drchunhuiliang@126.com
收稿日期:2022-07-08,
修回日期:2022-12-15,
纸质出版日期:2023-01-30
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李从欣,刘国强,刘洋,等.PI3K在舒尼替尼致hiPSC-CMs收缩功能障碍中的作用[J].中国药房,2023,34(02):139-143.
LI Congxin,LIU Guoqiang,LIU Yang,et al.Role of PI3K in systolic dysfunction of hiPSC-CMs induced by sunitinib[J].ZHONGGUO YAOFANG,2023,34(02):139-143.
李从欣,刘国强,刘洋,等.PI3K在舒尼替尼致hiPSC-CMs收缩功能障碍中的作用[J].中国药房,2023,34(02):139-143. DOI: 10.6039/j.issn.1001-0408.2023.02.03.
LI Congxin,LIU Guoqiang,LIU Yang,et al.Role of PI3K in systolic dysfunction of hiPSC-CMs induced by sunitinib[J].ZHONGGUO YAOFANG,2023,34(02):139-143. DOI: 10.6039/j.issn.1001-0408.2023.02.03.
目的
2
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
2
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CardioExcyte 96系统检测细胞收缩力,并计算半数抑制浓度(IC
50
);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
2
舒尼替尼对hiPSC-CMs收缩力的抑制作用有浓度依赖趋势,IC
50
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
2
激活PI3K活性是改善舒尼替尼致心肌毒性的潜在分子机制。
OBJECTIVE
2
To study the role of phosphatidylinositol-3-kinase (PI3K) on sunitinib-induced myocardial systolic dysfunction.
METHODS
2
Using human-induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMS) as objects, the contractile force of cardiomyocytes was measured by CardioExcyte 96 system, and IC
50
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
2
Sunitinib inhibited the contractile force of hiPSC-CMs in a concentration-dependent manner. IC
50
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
2
Activating PI3K activity is a potential molecular mechanism to improve myocardial toxicity induced by sunitinib.
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