Article(id=1201096921780806229, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1201096916940579367, articleNumber=null, orderNo=null, doi=10.16438/j.0513-4870.2023-1262, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1699372800000, receivedDateStr=2023-11-08, revisedDate=1704988800000, revisedDateStr=2024-01-12, acceptedDate=null, acceptedDateStr=null, onlineDate=1764293421454, onlineDateStr=2025-11-28, pubDate=1712851200000, pubDateStr=2024-04-12, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1764293421454, onlineIssueDateStr=2025-11-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1764293421454, creator=13701087609, updateTime=1764293421454, updator=13701087609, issue=Issue{id=1201096916940579367, tenantId=1146029695717560320, journalId=1189982191388893191, year='2024', volume='59', issue='4', pageStart='789', pageEnd='1100', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1764293420298, creator=13701087609, updateTime=1764293534792, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1201097397242912862, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1201096916940579367, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1201097397242912863, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1201096916940579367, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=957, endPage=964, ext={EN=ArticleExt(id=1201096924305777335, articleId=1201096921780806229, tenantId=1146029695717560320, journalId=1189982191388893191, language=EN, title=A novel chalcone derivative C13 inhibits the growth of human gastric cancer cells through suppressing ErbB4/PI3K/AKT signaling pathway, columnId=1190335348761793317, journalTitle=Acta Pharmaceutica Sinica, columnName=Original Articles, runingTitle=null, highlight=null, articleAbstract=

3ʹ-Hydroxy-4ʹ-methoxy-2-hydroxy-5-bromochalcone (hereinafter referred to as C13) is a novel chalcone derivative obtained in the process of structural modification of DHMMF, the antitumor active compound of Resina Draconis, in our laboratory. In this study, we investigated the effects of C13 on the proliferation and apoptosis of human gastric cancer HGC-27 and AGS cells and its potential mechanism of action. Firstly, through methyl thiazolyl tetrazolium (MTT), colony formation assay, and 5-ethynyl-2'-deoxyuridine (EdU) staining, we found that C13 inhibited the proliferation ability of human gastric cancer HGC-27 and AGS cells. Using flow cytometry and Western blot, it was found that C13 induced apoptosis in human gastric cancer HGC-27 and AGS cells, and up-regulated the protein level of cleaved poly ADP-ribose polymerase (cleaved-PARP). The results of RNA sequencing analysis showed that the Erb-b2 receptor tyrosine kinase 4/phosphoinositide 3-kinases/AKT (ErbB4/PI3K/AKT) signaling pathway may be involved in anti-gastric cancer activity of C13. Finally, the results of immunoblotting assay showed that C13 treatment down-regulated the protein levels of ErbB4 and phospho-ErbB4, as well as down-regulated the phosphorylation levels of PI3K and AKT in human gastric cancer HGC-27 and AGS cells, which verified the results from RNA-seq analysis. In conclusion, C13 inhibited the proliferation and induced apoptosis of human gastric cancer cells, which may be related to the down-regulation of ErbB4/PI3K/AKT signaling pathway. This study may provide a candidate drug for the treatment of gastric cancer.

, correspAuthors=Jun LI, Zhong-dong HU, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright ©2024 Acta Pharmaceutica Sinica. All rights reserved., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Peng TAN, Yun-feng ZHANG, Long-yan WANG, Hui-ming HUANG, Fei WANG, Xue-jiao WEI, Zhu-guo WANG, Jun LI, Zhong-dong HU), CN=ArticleExt(id=1201096927694775169, articleId=1201096921780806229, tenantId=1146029695717560320, journalId=1189982191388893191, language=CN, title=一种新型查耳酮衍生物C13通过ErbB4/PI3K/AKT信号通路抑制人胃癌细胞的生长, columnId=1190335348896011050, journalTitle=药学学报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=

3ʹ-羟基-4ʹ-甲氧基-2-羟基-5-溴查耳酮(以下简称C13) 是本课题组对龙血竭抗肿瘤活性化合物DHMMF进行结构修饰过程中获得的一个新型查耳酮衍生物。本研究探讨了C13对人胃癌HGC-27、AGS细胞增殖、凋亡的影响及其潜在的作用机制。首先采用噻唑蓝(methyl thiazolyl tetrazolium, MTT)、集落形成实验、5-乙炔基-2′-脱氧尿苷(5-ethynyl-2ʹ-deoxyuridine, EdU) 染色法发现C13能显著抑制人胃癌HGC-27、AGS细胞的增殖能力。采用流式细胞术和免疫印迹法检测发现C13能诱导人胃癌HGC-27、AGS细胞发生凋亡, 并上调剪切的聚腺苷酸二磷酸核糖转移酶(cleaved-poly ADP-ribose polymerase, cleaved-PARP) 的蛋白水平。转录组测序分析结果显示C13可能通过调控人表皮生长因子受体4/磷脂酰肌醇3-激酶/蛋白激酶B (Erb-B2 receptor tyrosine kinase 4/phosphoinositide 3-kinase/AKT, ErbB4/PI3K/AKT) 信号通路发挥抗胃癌作用。最后免疫印迹实验结果表明, C13处理后能下调人胃癌细胞中ErbB4总蛋白及磷酸化水平, 并能够抑制其下游PI3K及AKT蛋白磷酸化水平, 进一步验证了转录组测序结果。综上所述, 新型查耳酮衍生物C13能够显著抑制人胃癌HGC-27、AGS细胞增殖并诱导其发生凋亡, 其机制可能与下调ErbB4/PI3K/AKT信号通路有关。本研究能够为胃癌治疗提供一个候选研究药物。

, correspAuthors=李军, 胡仲冬, authorNote=null, correspAuthorsNote=
*李军, E-mail: ;
胡仲冬, Tel: 86-10-64286180, E-mail:
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A, B: Effects of C13 on the viability of HGC-27 and AGS cells after treatment with different concentrations and time; C-F: Representative images of EdU staining of HGC-27 and AGS cells and EdU-positive cell proportion after C13 (1.5 and 3 μmol·L<sup>-1</sup>) treatment for 24 h. Scale bars represent 100 μm; G, H: Representative images of the cell colony formation assay of HGC-27 and AGS cells and the quantification of colony number after C13 (1.5 μmol·L<sup>-1</sup>) treatment for 12 days; <i>n</i> = 3, <span class="mag-xml-overline" style="border-top:1px solid black"><i>x</i></span>±<i>s</i>. <sup>**</sup><i>P</i> < 0.01 <i>vs</i> control group (0 μmol·L<sup>-1</sup>) , figureFileSmall=6q2YkKt1XXPDWPDepS0bgw==, figureFileBig=m1sLmTyFjl3ZUDQ4qmjfcQ==, tableContent=null), ArticleFig(id=1201096936297292182, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1201096921780806229, language=EN, label=null, caption=null, figureFileSmall=GEeshtMRHGwoF+kiXni0YA==, figureFileBig=GFya1h8LVENMBbwZXXVMjQ==, tableContent=null), ArticleFig(id=1201096936439898527, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1201096921780806229, language=CN, label=Figure 3, caption= Effects of C13 on apoptosis of HGC-27 and AGS cells. A-D: Representative images of apoptosis detection by Annexin V/PI flow cytometry and the quantification of apoptosis rate after C13 (1.5 and 3 μmol·L<sup>-1</sup>) treatment for 48 h; E, F: Cleaved-poly ADP-ribose polymerase (cleaved-PARP) protein levels were detected by Western blot analysis and quantified using Image J after C13 (1.5 and 3 μmol·L<sup>-1</sup>) treatment for 48 h. <i>n</i> = 3, <span class="mag-xml-overline" style="border-top:1px solid black"><i>x</i></span>±<i>s</i>. <sup>*</sup><i>P</i> < 0.05, <sup>**</sup><i>P</i> < 0.01 <i>vs</i> control group , figureFileSmall=GEeshtMRHGwoF+kiXni0YA==, figureFileBig=GFya1h8LVENMBbwZXXVMjQ==, tableContent=null), ArticleFig(id=1201096936548950438, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1201096921780806229, language=EN, label=null, caption=null, figureFileSmall=03Ho+mra5SyIGt3SkgG0Zw==, figureFileBig=IlyqsoUnWIV9fC5W38KhVQ==, tableContent=null), ArticleFig(id=1201096936658002352, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1201096921780806229, language=CN, label=Figure 4, caption= Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis of RNA sequencing on HGC-27 cells treated with or without C13 , figureFileSmall=03Ho+mra5SyIGt3SkgG0Zw==, figureFileBig=IlyqsoUnWIV9fC5W38KhVQ==, tableContent=null), ArticleFig(id=1201096936817385920, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1201096921780806229, language=EN, label=null, caption=null, figureFileSmall=CTzAi89/wYTtd4S7VomDoQ==, figureFileBig=941gMUTa+CMyRW8qijtmpQ==, tableContent=null), ArticleFig(id=1201096936934826438, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1201096921780806229, language=CN, label=Figure 5, caption= Effects of C13 on ErbB4/PI3K/AKT signaling pathway in HGC-27 and AGS cells. HGC-27 and AGS cells treated with C13 (0, 1.5, 3 μmol·L<sup>-1</sup>) for 48 h were subjected to Western blot analysis (A), and the quantification using Image J (B-G). <i>n</i> = 3, <span class="mag-xml-overline" style="border-top:1px solid black"><i>x</i></span>±<i>s</i>. <sup>*</sup><i>P</i> < 0.05, <sup>**</sup><i>P</i> < 0.01 <i>vs</i> control group. 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一种新型查耳酮衍生物C13通过ErbB4/PI3K/AKT信号通路抑制人胃癌细胞的生长
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谭鹏 , 张云封 , 王龙燕 , 黄惠铭 , 王飞 , 魏雪娇 , 王柱国 , 李军 * , 胡仲冬 *
药学学报 | 研究论文 2024,59(4): 957-964
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药学学报 | 研究论文 2024, 59(4): 957-964
一种新型查耳酮衍生物C13通过ErbB4/PI3K/AKT信号通路抑制人胃癌细胞的生长
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谭鹏, 张云封, 王龙燕, 黄惠铭, 王飞, 魏雪娇, 王柱国, 李军* , 胡仲冬*
作者信息
  • 北京中医药大学, 北京中医药研究院, 中药现代研究中心, 北京 100029

通讯作者:

*李军, E-mail: ;
胡仲冬, Tel: 86-10-64286180, E-mail:
A novel chalcone derivative C13 inhibits the growth of human gastric cancer cells through suppressing ErbB4/PI3K/AKT signaling pathway
Peng TAN, Yun-feng ZHANG, Long-yan WANG, Hui-ming HUANG, Fei WANG, Xue-jiao WEI, Zhu-guo WANG, Jun LI* , Zhong-dong HU*
Affiliations
  • Modern Research Center for Traditional Chinese Medicine, Beijing Institute of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China
出版时间: 2024-04-12 doi: 10.16438/j.0513-4870.2023-1262
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3ʹ-羟基-4ʹ-甲氧基-2-羟基-5-溴查耳酮(以下简称C13) 是本课题组对龙血竭抗肿瘤活性化合物DHMMF进行结构修饰过程中获得的一个新型查耳酮衍生物。本研究探讨了C13对人胃癌HGC-27、AGS细胞增殖、凋亡的影响及其潜在的作用机制。首先采用噻唑蓝(methyl thiazolyl tetrazolium, MTT)、集落形成实验、5-乙炔基-2′-脱氧尿苷(5-ethynyl-2ʹ-deoxyuridine, EdU) 染色法发现C13能显著抑制人胃癌HGC-27、AGS细胞的增殖能力。采用流式细胞术和免疫印迹法检测发现C13能诱导人胃癌HGC-27、AGS细胞发生凋亡, 并上调剪切的聚腺苷酸二磷酸核糖转移酶(cleaved-poly ADP-ribose polymerase, cleaved-PARP) 的蛋白水平。转录组测序分析结果显示C13可能通过调控人表皮生长因子受体4/磷脂酰肌醇3-激酶/蛋白激酶B (Erb-B2 receptor tyrosine kinase 4/phosphoinositide 3-kinase/AKT, ErbB4/PI3K/AKT) 信号通路发挥抗胃癌作用。最后免疫印迹实验结果表明, C13处理后能下调人胃癌细胞中ErbB4总蛋白及磷酸化水平, 并能够抑制其下游PI3K及AKT蛋白磷酸化水平, 进一步验证了转录组测序结果。综上所述, 新型查耳酮衍生物C13能够显著抑制人胃癌HGC-27、AGS细胞增殖并诱导其发生凋亡, 其机制可能与下调ErbB4/PI3K/AKT信号通路有关。本研究能够为胃癌治疗提供一个候选研究药物。

查耳酮衍生物C13  /  人胃癌细胞  /  增殖  /  凋亡  /  ErbB4/PI3K/AKT信号通路

3ʹ-Hydroxy-4ʹ-methoxy-2-hydroxy-5-bromochalcone (hereinafter referred to as C13) is a novel chalcone derivative obtained in the process of structural modification of DHMMF, the antitumor active compound of Resina Draconis, in our laboratory. In this study, we investigated the effects of C13 on the proliferation and apoptosis of human gastric cancer HGC-27 and AGS cells and its potential mechanism of action. Firstly, through methyl thiazolyl tetrazolium (MTT), colony formation assay, and 5-ethynyl-2'-deoxyuridine (EdU) staining, we found that C13 inhibited the proliferation ability of human gastric cancer HGC-27 and AGS cells. Using flow cytometry and Western blot, it was found that C13 induced apoptosis in human gastric cancer HGC-27 and AGS cells, and up-regulated the protein level of cleaved poly ADP-ribose polymerase (cleaved-PARP). The results of RNA sequencing analysis showed that the Erb-b2 receptor tyrosine kinase 4/phosphoinositide 3-kinases/AKT (ErbB4/PI3K/AKT) signaling pathway may be involved in anti-gastric cancer activity of C13. Finally, the results of immunoblotting assay showed that C13 treatment down-regulated the protein levels of ErbB4 and phospho-ErbB4, as well as down-regulated the phosphorylation levels of PI3K and AKT in human gastric cancer HGC-27 and AGS cells, which verified the results from RNA-seq analysis. In conclusion, C13 inhibited the proliferation and induced apoptosis of human gastric cancer cells, which may be related to the down-regulation of ErbB4/PI3K/AKT signaling pathway. This study may provide a candidate drug for the treatment of gastric cancer.

chalcone derivative C13  /  human gastric cancer cell  /  proliferation  /  apoptosis  /  ErbB4/PI3K/AKT signaling pathway
谭鹏, 张云封, 王龙燕, 黄惠铭, 王飞, 魏雪娇, 王柱国, 李军, 胡仲冬. 一种新型查耳酮衍生物C13通过ErbB4/PI3K/AKT信号通路抑制人胃癌细胞的生长. 药学学报, 2024 , 59 (4) : 957 -964 . DOI: 10.16438/j.0513-4870.2023-1262
Peng TAN, Yun-feng ZHANG, Long-yan WANG, Hui-ming HUANG, Fei WANG, Xue-jiao WEI, Zhu-guo WANG, Jun LI, Zhong-dong HU. A novel chalcone derivative C13 inhibits the growth of human gastric cancer cells through suppressing ErbB4/PI3K/AKT signaling pathway[J]. Acta Pharmaceutica Sinica, 2024 , 59 (4) : 957 -964 . DOI: 10.16438/j.0513-4870.2023-1262
胃癌(gastric cancer, GC) 作为全球最常见的恶性肿瘤之一, 其发病率与死亡率均稳居癌症前五[1]。作为一种多因素疾病, 胃癌的发生发展与多种危险因素有关, 主要包括幽门螺杆菌感染、高盐摄入、低果蔬摄入等[2]。虽然胃癌早期根治术后5年生存率超过90%[3], 但因为其早期症状不明显, 导致许多患者临床诊断出胃癌时已经是中后期, 手术的治疗现状不佳。目前靶向药物及免疫治疗在胃癌中已经取得了一定进展[4], 但临床药物治疗仍然以普通化疗药物为主, 其不良反应及易耐药性往往导致治疗失败[5]。因此, 开发低毒高效的新型抗胃癌药物仍具有重要意义。
人表皮生长因子受体4 (Erb-B2 receptor tyrosine kinase 4, ErbB4) 是表皮生长因子受体(epidermal growth factor receptor, EGFR) 家族的成员之一, 是一种大的跨膜糖蛋白, 具有酪氨酸激酶活性[6]。当ErbB4与其配体结合后, 会激活磷脂酰肌醇3-激酶/蛋白激酶B (phosphoinositide 3-kinase/AKT, PI3K/AKT) 等一系列信号通路并促进细胞的分裂与增殖[7]。现有研究表明, 与正常胃细胞相比, ErbB4在多种胃癌细胞系中高表达, 并与胃癌患者预后不良密切相关[8]
中药龙血竭Resina Draconis为百合科植物剑叶龙血树Dracaena cochinchinenis (Lour) S. C. Chen的含脂木材经乙醇提取得到的树脂, 具有活血化瘀、收敛止血、补血等功效[9]。现代药理学研究表明龙血竭具有抗肿瘤[10]、抗菌[11]、抗炎镇痛[12]、降糖降脂[13]等作用。本课题组前期工作发现龙血竭乙酸乙酯提取部位[13, 14]以及黄烷类成分DHMMF[15]能通过调节Smad同源物3 (recombinant SMAD family member 3, Smad3)、丝裂原活化蛋白激酶(mitogen-activated protein kinase, MAPK)、细胞周期依赖性激酶抑制因子1A (cyclin-dependent kinase inhibitor 1A, CDKN1A) 等癌症相关蛋白及信号通路诱导肿瘤细胞周期阻滞、凋亡及自噬。本课题组在对龙血竭活性化合物DHMMF进行结构修饰的过程中获得了多个查耳酮衍生物, 其中3ʹ-羟基-4ʹ-甲氧基-2-羟基-5-溴查耳酮(C13) 具有良好的体外抗胃癌活性, 并且转录组数据提示其机制可能与调控ErbB4/PI3K/AKT信号通路有关。本研究主要以人胃癌HGC-27、AGS细胞为研究对象, 探讨C13对人胃癌细胞增殖、凋亡的影响及其对ErbB4/PI3K/AKT信号通路的调控作用。
药品与试剂  C13 (纯度大于98%) 由本实验室合成, 通过理化性质和NMR、MS等谱学数据确定结构, 用二甲基亚砜(DMSO) 溶解C13为5 mmol·L-1母液, -20 ℃储存待用; 胎牛血清(南京诺唯赞生物科技股份有限公司, F102-01); 抗生素-抗真菌(100×)、0.25%胰酶、Meilunbio®飞克特超敏ECL发光液(大连美仑生物技术有限公司, MA0345、MA0234、MA0186); 噻唑蓝(MTT) 粉末(北京百瑞极生物科技有限公司, BN30793); 细胞凋亡检测试剂盒(美国Becton Dickinson公司, 556547); BeyoClickTMEdU-488细胞增殖检测试剂盒(上海碧云天生物技术有限公司, C0071S); RNA-Solv Reagent (美国Omega Bio-tek公司, L01UM); 剪切的聚腺苷酸二磷酸核糖转移酶(cleaved-PARP)、PI3K、磷酸化PI3K (p-PI3K)、AKT、磷酸化AKT (p-AKT) (美国Cell Signaling Technology公司, 9532T、4249T、17366S、4685S、4060S); ErbB4、磷酸化ErbB4 (p-ErbB4) (武汉爱博泰克生物科技有限公司, A19047、AP0034)。
细胞培养  人胃癌HGC-27细胞购买于美国模式培养物集存库(ATCC) (编号FH0271, 传至8~10代); 人胃癌AGS细胞由中国医学科学院医学实验动物研究所龚佳男老师赠予(传至8~10代)。两株细胞均培养于含10%胎牛血清及1%双抗的1640完全培养基, 培养于37 ℃、5% CO2条件下。
MTT法细胞增殖实验  取对数生长期的人胃癌HGC-27、AGS细胞消化成单细胞悬液。计数后, 稀释细胞使每毫升含细胞为3×104个, 每孔100 μL接种于96孔板。贴壁24 h后, 吸弃旧培养基并加入含不同浓度C13药物工作液(0、1、2、3、4、5 μmol·L-1)。给药处理24、48、72 h后, 吸弃药物工作液, 每孔加入100 μL MTT工作液(0.5 g·L-1), 37 ℃孵育4 h。孵育结束后, 吸弃MTT工作液并加入150 μL DMSO, 置于摇床避光摇晃10 min后在490 nm波长下测定吸光度并计算细胞存活率。
EdU法细胞增殖实验  取对数生长期的人胃癌HGC-27、AGS细胞消化成单细胞悬液, 计数后按每孔5×104个细胞接种于12孔板中, 每组设置3个复孔。贴壁24 h后, 吸弃旧培养基并加入含不同浓度的C13药物工作液(0、1.5、3 μmol·L-1)。给药处理24 h后, 按BeyoClickTMEdU-488细胞增殖检测试剂盒说明书步骤操作, 最后于倒置荧光显微镜下观察并记录。
集落形成实验  取对数生长期的人胃癌HGC-27、AGS细胞消化成单细胞悬液, 计数后按每皿2 000个细胞接种于6 cm皿中, 每组设置3个重复。贴壁24 h后, 吸弃旧培养基并加入含不同浓度的C13药物工作液(0、1.5 μmol·L-1)。每隔4天换液1次。连续给药处理12天后, 吸弃旧培养基并用PBS清洗3次, 用4%多聚甲醛固定10 min后加入10 g·L-1结晶紫染液染色30 min。染色结束后, 用PBS轻轻清洗2遍并用相机拍照记录。
流式细胞术检测细胞凋亡  取对数生长期的人胃癌HGC-27、AGS细胞消化成单细胞悬液, 计数后按每孔1×105个细胞接种于6孔板中, 每组设置3个复孔。贴壁24 h后, 吸弃旧培养基并加入含不同浓度的C13药物工作液(0、1.5、3 μmol·L-1)。给药处理48 h后, 按细胞凋亡检测试剂盒说明书步骤操作, 最后使用流式细胞仪检测并计算细胞凋亡率。
转录组测序  取对数生长期的人胃癌HGC-27细胞消化成单细胞悬液, 适量接种于6 cm皿中。贴壁24 h后, 吸弃旧培养基并加入含不同浓度的C13药物工作液(0、3 μmol·L-1)。给药处理48 h后, 吸弃旧培养基并用PSB清洗3次, 每皿加入1 mL RNA-Solv reagent裂解细胞, 在冰上裂解5 min后, 将样品转移至1.5 mL无RNA酶的EP管中, 将收集的样品送至上海伯豪生物技术有限公司进行转录组测序分析。
免疫印迹实验  取对数生长期的人胃癌HGC-27、AGS细胞消化成单细胞悬液, 适量接种于6 cm皿中。贴壁24 h后, 吸弃旧培养基并加入含不同浓度的C13药物工作液(0、1.5、3 μmol·L-1)。给药处理48 h后, 吸弃旧培养基并用PSB清洗3次, 每孔加入适量的细胞裂解液, 冰上裂解10 min并收集于1.5 mL EP管中。将收集的样品置于99 ℃干式恒温器中加热10 min, -40 ℃保存待用。以适量体积上样, 采用适当的条件进行电泳、电转, 用5%脱脂牛奶室温封闭2 h后, 分别用相应的一抗(1∶1 000) 4 ℃孵育过夜, TBST溶液洗3次后, 加入对应二抗(1∶10 000) 4 ℃孵育4 h。二抗孵育结束后, TBST溶液洗3次, 而后加入超敏发光液并进行曝光, 借助Image J软件进行定量统计。
数据处理与分析  以上所有数据均使用GraphPad Prism 8.0.1软件进行统计学分析并采用平均值±标准差(x±s) 表示。分析方法为单因素方差分析(one-way analysis of variance, one-way ANOVA), P < 0.05认为具有统计学差异。
C13 (结构见图 1): 黄色粉末, 熔点: 176~177 ℃。1H NMR (400 MHz, CD3OD) δ 7.95 (d, J = 16.0 Hz, 1H), 7.80 (d, J = 16.0 Hz, 1H), 7.79 (d, J = 2.4 Hz, 1H), 7.67 (dd, J = 8.4, 2.4 Hz, 1H), 7.52 (d, J = 2.4 Hz, 1H), 7.34 (dd, J = 8.4, 2.4 Hz, 1H), 7.06 (d, J = 8.4 Hz, 1H), 6.81 (d, J = 8.4 Hz, 1H), 3.95 (s, 3H); 13C NMR (100 MHz, CD3OD) δ 191.31, 157.86, 153.83, 147.89, 139.64, 135.06, 132.63, 132.48, 125.50, 123.78, 123.33, 118.93, 116.02, 112.52, 111.83, 56.48。HRESIMS: m/z 346.990 9, 计算值C16H12BrO4 346.992 4 [M–H]
为研究C13对人胃癌HGC-27、AGS细胞活力的影响, 采用MTT法测定不同浓度C13给药处理24、48、72 h后两种人胃癌细胞的活力变化。与空白组相比, 各给药组显著降低两株胃癌细胞的存活率(P < 0.01), 并具有浓度与时间依赖性(图 2AB)。C13给药处理48 h后人胃癌HGC-27、AGS细胞的IC50分别为2.284、1.898 μmol·L-1。正在增殖中的细胞能被EdU试剂染色并在荧光显微镜下发出非常明亮的绿色荧光。与空白组相比, 给药(1.5、3 μmol·L-1) 处理24 h后在荧光显微镜下绿色荧光显著减少, 证明给药组细胞增殖受到抑制(图 2C~F)。克隆形成实验也进一步证明了C13能抑制人胃癌细胞的集落形成能力(图 2GH)。以上结果证明, C13能抑制人胃癌HGC-27、AGS细胞的增殖能力。
为研究C13对人胃癌HGC-27、AGS细胞凋亡的影响, 采用Annexin V/PI流式细胞术对给药处理48 h后的两种人胃癌细胞的凋亡水平进行了检测, 发现C13能诱导两种人胃癌细胞发生凋亡。3 μmol·L-1 C13给药处理48 h后, 人胃癌HGC-27、AGS细胞凋亡率分别是16.70% ± 1.42%和22.69% ± 1.84% (图 3A~D)。免疫印迹实验结果表明, C13能上调凋亡标志蛋白cleaved-PARP的蛋白水平(图 3EF)。以上结果均证明, C13能诱导人胃癌HGC-27、AGS细胞发生凋亡。
转录组学是利用高通量测序技术对样品所有转录本进行测序, 能揭示中药干预后肿瘤组织或细胞中转录水平变化。本研究对C13 (0、3 μmol·L-1) 处理48 h样本进行了转录组测序, Kyoto Encyclopedia of Genes and Genomes (KEGG) 信号通路富集结果提示, C13的作用机制可能与ErbB信号通路、p53信号通路、铁死亡信号通路等有关(图 4)。对转录组测序数据进一步发现, ErbB4的表达丰度发生了下调(对照组、给药组count值分别为: 1 453、810)。在肿瘤细胞中过度表达或过度激活的ErbB4能够通过磷酸化PI3K, 从而激活PI3K/AKT信号通路, 最终促进肿瘤细胞的生长[16]。因此, 本课题组推测ErbB4/PI3K/AKT信号通路下调可能参与了C13的抗胃癌作用。
为了验证C13对人胃癌细胞中ErbB4/PI3K/AKT信号通路的调控作用, 本研究采用免疫印迹实验对C13给药48 h后的人胃癌HGC-27、AGS细胞中ErbB4/PI3K/AKT信号通路相关蛋白水平进行了检测。与空白组相比, 给药组(1.5、3 μmol·L-1) 的ErbB4、p-ErbB4、p-PI3K、p-AKT蛋白水平均发生下调, 表明C13能够抑制人胃癌细胞中ErbB4总蛋白及磷酸化水平, 并能够下调其下游PI3K及AKT蛋白磷酸化水平(图 5)。因此, C13能够抑制人胃癌细胞中ErbB4/PI3K/AKT信号通路。
随着青蒿素[17]、三氧化二砷[18, 19]等中药来源成分在抗疟疾及抗肿瘤等领域取得了巨大成功, 证明从中药中挖掘新药及其先导化合物具有巨大的潜力。黄酮类化合物是中药有效成分的重要组成部分, 根据结构可以分为黄酮、黄酮醇、查耳酮、聚合黄酮和黄烷等[20]。现代药理研究表明, 中药黄酮类产物具有良好的抗肿瘤活性, 如中药黄芩中的主要成分黄芩苷可以通过诱导肿瘤细胞凋亡及周期阻滞[21]、促进铁死亡[22, 23]等机制发挥抗肿瘤活性。本课题组的前期工作从中药龙血竭中分离出一个天然黄酮类成分DHMMF, 并发现其具有良好的抗肿瘤活性[15]。在针对DHMMF进行类似物合成过程中, 本课题组获得了多个查耳酮类化合物, 并进行了体外抗肿瘤活性筛选, 其中C13对人胃癌细胞展现出较好的细胞毒活性, 其对人胃癌HGC-27、AGS细胞给药48 h的IC50分别为2.284、1.898 μmol·L-1。通过集落形成实验、EdU增殖实验及流式细胞术实验, 进一步证明了C13能抑制人胃癌细胞的增殖能力并诱导其发生细胞凋亡。
EGFR家族, 又称ErbB家族, 是一组与细胞生长及分化密切相关的受体酪氨酸激酶, 是目前研究最多的细胞信号家族之一[24]。ErbB4是ErbB家族的成员之一, 其对生长具有双向调节作用[6]。ErbB4过度表达或过度激活往往会导致肿瘤的发生发展。如在胃癌、乳腺癌、黑色素瘤及肺癌中观察到ErbB4激酶结构域的突变, 并证明了这些突变能够增加ErbB4的表达或磷酸化活性, 进而促进肿瘤的增殖及转移[25-28]。经典ErbB4信号通路的激活高度依赖ErbB4的磷酸化。ErbB4通过与其配体(主要为neregulin-1) 结合而被激活, 激活后的ErbB4会开始自磷酸化, 并进一步激活下游多条与增殖相关的信号通路, 如PI3K/AKT信号通路[16]。使用慢病毒敲低ErbB4或使用AST-1306 (一种ErbB4抑制剂) 处理能够下调PI3K/AKT信号通路相关蛋白表达, 并显著抑制胃癌细胞增殖[8]。研究表明, ErbB4突变频繁发生在非小细胞肺癌中, Y285C、D595V、D931Y等位点的突变会导致ErbB4的蛋白水平及配体诱导的磷酸化水平的增加, 并进一步上调AKT磷酸化水平, 最终促进肿瘤细胞的增殖[27]。Clone P6-1 (一种ErbB4单克隆抗体) 能通过抑制ErbB4的神经调节素(neuregulin, NRG) 依赖性活化, 降低其磷酸化水平进而抑制乳腺癌细胞增殖[29]。为了初步探究C13的抗胃癌作用机制, 本研究对经C13给药处理的人胃癌细胞样品进行了转录组测序分析, 其中KEGG通路富集分析结果提示, ErbB信号通路可能参与了C13的抗胃癌作用, 且进一步挖掘转录组测序数据发现, ErbB4的表达丰度发生了下调。因此, 本课题组推测ErbB4/PI3K/AKT信号通路下调可能参与了C13的抗胃癌作用。为了进一步验证上述推测, 本研究开展了蛋白免疫印迹实验。结果显示, C13能够显著抑制人胃癌细胞中ErbB4的磷酸化水平, 并下调其总蛋白, 表明C13能有效抑制ErbB4的活性。同时, C13能够下调其下游蛋白PI3K和AKT的磷酸化水平, 即C13能够抑制人胃癌细胞中ErbB4/PI3K/AKT信号通路。
综上所述, 新型查耳酮衍生物C13能够显著抑制人胃癌HGC-27、AGS细胞增殖并诱导其发生凋亡, 其作用机制可能与下调ErbB4/PI3K/AKT信号通路有关(图 6)。本研究揭示了C13的抗胃癌活性, 提示其有望成为针对ErbB4靶点治疗胃癌的候选研究药物。
作者贡献: 谭鹏、张云封、王龙燕进行实验研究、数据采集及分析、论文撰写; 黄惠铭、王飞进行转录组测序数据分析; 魏雪娇、王柱国进行文献调研与分析; 李军、胡仲冬进行实验设计、研究思路指导、论文撰写与修改、提供研究经费。
利益冲突: 不存在任何利益冲突。
  • 国家自然科学基金资助项目(82074072)
  • 中央高校基本科研业务费专项资金(2023-JYB-JBQN-051)
  • 北京中医药大学国家级人才精准培育计划(JZPY202206)
  • 国家中医药管理局青年岐黄学者支持项目
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2024年第59卷第4期
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doi: 10.16438/j.0513-4870.2023-1262
  • 接收时间:2023-11-08
  • 首发时间:2025-11-28
  • 出版时间:2024-04-12
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  • 收稿日期:2023-11-08
  • 修回日期:2024-01-12
基金
国家自然科学基金资助项目(82074072)
中央高校基本科研业务费专项资金(2023-JYB-JBQN-051)
北京中医药大学国家级人才精准培育计划(JZPY202206)
国家中医药管理局青年岐黄学者支持项目
作者信息
    北京中医药大学, 北京中医药研究院, 中药现代研究中心, 北京 100029

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*李军, E-mail: ;
胡仲冬, Tel: 86-10-64286180, E-mail:
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2种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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