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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 ·
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