KIT基因双突变对细胞增殖的影响
发布时间:2021-08-30 03:34
[研究背景]胃肠间质瘤(gastrointestinal stromal tumors GISTs)占胃肠道间叶源性肿瘤的80%,是最常见的胃肠道间叶源性肿瘤。其预后受肿瘤发生部位,肿瘤直径及核分裂像影响,仅按照肿瘤直径将≤2cm的GIST称为“小间质瘤”,>2cm称为“临床显著型间质瘤或大间质瘤”,二者均起源于胃肠道起搏细胞ICC(interstitial of Cajal),受kit/PDGFRA(70%85%)基因突变驱动,但大、小间质瘤的临床表现、组织病理学形态、生物学行为和预后明显不同。因此究其根本,遗传学上的差异需要进一步深入研究。有文献报道KIT基因双突变模型小鼠较单突变小鼠中位生存期延长、肿瘤生长减缓,提示双突变可能阻滞肿瘤生长,但KIT基因双突变阻滞生长的机制不明。[目的]研究胃大、小间质瘤KIT基因表达差异,探讨胃小间质瘤惰性生长行为的机制,以便获得大间质瘤的靶向治疗的位点;探讨KIT基因双突变导致胃肠间质瘤停滞生长的机制及对PI3K信号通路mRNA和蛋白表达影响。[方法]1.建立入组标准,收集胃大、小间质瘤标本,HE染色和免疫组化染色观...
【文章来源】:福建医科大学福建省
【文章页数】:110 页
【学位级别】:硕士
【部分图文】:
GISTs组织学亚型图示:A:梭型细胞亚型400×;B:上皮样细胞亚型400×;C:
241.材料与方法1.1实验材料1.1.1研究对象病例同第一部分入组的病例210例,建立入组标准,进行生长潜能分组(表7)。行DNA电泳检测DNA完整性后,30例合格样本进行NGS检测,其中停止生长的小GISTs(a组)9例、生长旺盛的大GISTs(b组)11例、生长潜能的小GISTs(c组)10例。表7.生长潜能分组标准(图2):最大径(cm)核分裂像(/50HFP)肿瘤边界浸润细胞排列钙化a组停止生长的小GISTs≤2≤1界清无疏松有b组生长旺盛的大GISTs>2any界不清有密集无c组生长潜能的小GISTs≤2any界不清有密集无图2:生长潜能分组GISTsHE切片图例:D:a组胃停止生长型小GISTs400×,细胞排列疏松,境界清楚,灶区可见钙化;E:b组胃生长旺盛型大GISTs400×,细胞排列密集成栅栏样,伴出血;F:c组胃生长潜能型小GISTs400×,细胞肿瘤边界呈膨出性生长,“→”处见可见核分裂像
489Q413R)、TSC2(exon19K657T)、MSH6(exon5P1073R)突变;c组9例(30%)为KIT驱动突变,同时伴随PDGFRA(exon18D842V)、PALB2(exon3A38G)、MAX(剪切区域)突变。由此可推测,生长潜能和生长旺盛的GISTs是多基因、多进程的共同结果,停止生长的小GISTs可能仅是KIT驱动突变形成,但无其他基因体细胞突变协同促进生长、逐渐进展的作用。图4.30例体细胞各基因突变、突变率及涉及信号通路(含染色体扩增、缺失)图5.30例生长潜能各组基因突变比较(不含染色体扩增、缺失及同义突变)
【参考文献】:
期刊论文
[1]Imatinib response of gastrointestinal stromal tumor patients with germline mutation on KIT exon 13:A family report[J]. Gulgun Engin,Serpil Eraslan,Hülya Kayserili,Yersu Kapran,Haluk Akman,Ali Akyuz,Nuri Faruk Aykan. World Journal of Radiology. 2017(09)
[2]胃肠道小间质瘤的研究进展[J]. 吴晶晶,张声. 临床与病理杂志. 2015(01)
[3]A gist of gastrointestinal stromal tumors: A review[J]. Ashwin Rammohan,Jeswanth Sathyanesan,Kamalakannan Rajendran,Anbalagan Pitchaimuthu,Senthil-Kumar Perumal,UP Srinivasan,Ravi Ramasamy,Ravichandran Palaniappan,Manoharan Govindan. World Journal of Gastrointestinal Oncology. 2013(06)
[4]直径小于2cm的胃肠道间质瘤是肿瘤还是瘤样病变[J]. 陈林莺,任彩虹,陈祥娜,张声. 中国肿瘤临床. 2012(18)
[5]Efficacy of imatinib dose escalation in Chinese gastrointestinal stromal tumor patients[J]. Jian Li,Ji-Fang Gong,Jie Li,Jing Gao,Nai-Ping Sun,Lin Shen,Laboratory of Carcinogenesis and Translational Research for the Ministry of National Education,Department of GI Oncology,Peking University School of Oncology,Beijing Cancer Hospital and Institute,Beijing 100142,China. World Journal of Gastroenterology. 2012(07)
[6]Expressions of sonic hedgehog, patched, smoothened and Gli-1 in human intestinal stromal tumors and their correlation with prognosis[J]. Ayumi Yoshizaki,Toshiyuki Nakayama,Shinji Naito,Ichiro Sekine. World Journal of Gastroenterology. 2006(35)
[7]Gastrointestinal stromal tumors in a cohort of Chinese patients in Hong Kong[J]. Kam Hoi Chan, Chun Wing Chan, Wai Hung Chow, Wai Keung Kwan, Department of Medicine, Yan Chai Hospital, Tsuen Wan, Hong Kong SAR, China Chi Kwan Kong, Department of Surgery, Yan Chai Hospital, Tsuen Wan, Hong Kong SAR, China Ka Fung Mak, Miu Yi Leung, Department of Radiology, Yan Chai Hospital, Tsuen Wan, Hong Kong SAR, China Lin Kiu Lau, Department of Pathology, Yan Chai Hospital, Tsuen Wan, Hong Kong SAR, China. World Journal of Gastroenterology. 2006(14)
本文编号:3371977
【文章来源】:福建医科大学福建省
【文章页数】:110 页
【学位级别】:硕士
【部分图文】:
GISTs组织学亚型图示:A:梭型细胞亚型400×;B:上皮样细胞亚型400×;C:
241.材料与方法1.1实验材料1.1.1研究对象病例同第一部分入组的病例210例,建立入组标准,进行生长潜能分组(表7)。行DNA电泳检测DNA完整性后,30例合格样本进行NGS检测,其中停止生长的小GISTs(a组)9例、生长旺盛的大GISTs(b组)11例、生长潜能的小GISTs(c组)10例。表7.生长潜能分组标准(图2):最大径(cm)核分裂像(/50HFP)肿瘤边界浸润细胞排列钙化a组停止生长的小GISTs≤2≤1界清无疏松有b组生长旺盛的大GISTs>2any界不清有密集无c组生长潜能的小GISTs≤2any界不清有密集无图2:生长潜能分组GISTsHE切片图例:D:a组胃停止生长型小GISTs400×,细胞排列疏松,境界清楚,灶区可见钙化;E:b组胃生长旺盛型大GISTs400×,细胞排列密集成栅栏样,伴出血;F:c组胃生长潜能型小GISTs400×,细胞肿瘤边界呈膨出性生长,“→”处见可见核分裂像
489Q413R)、TSC2(exon19K657T)、MSH6(exon5P1073R)突变;c组9例(30%)为KIT驱动突变,同时伴随PDGFRA(exon18D842V)、PALB2(exon3A38G)、MAX(剪切区域)突变。由此可推测,生长潜能和生长旺盛的GISTs是多基因、多进程的共同结果,停止生长的小GISTs可能仅是KIT驱动突变形成,但无其他基因体细胞突变协同促进生长、逐渐进展的作用。图4.30例体细胞各基因突变、突变率及涉及信号通路(含染色体扩增、缺失)图5.30例生长潜能各组基因突变比较(不含染色体扩增、缺失及同义突变)
【参考文献】:
期刊论文
[1]Imatinib response of gastrointestinal stromal tumor patients with germline mutation on KIT exon 13:A family report[J]. Gulgun Engin,Serpil Eraslan,Hülya Kayserili,Yersu Kapran,Haluk Akman,Ali Akyuz,Nuri Faruk Aykan. World Journal of Radiology. 2017(09)
[2]胃肠道小间质瘤的研究进展[J]. 吴晶晶,张声. 临床与病理杂志. 2015(01)
[3]A gist of gastrointestinal stromal tumors: A review[J]. Ashwin Rammohan,Jeswanth Sathyanesan,Kamalakannan Rajendran,Anbalagan Pitchaimuthu,Senthil-Kumar Perumal,UP Srinivasan,Ravi Ramasamy,Ravichandran Palaniappan,Manoharan Govindan. World Journal of Gastrointestinal Oncology. 2013(06)
[4]直径小于2cm的胃肠道间质瘤是肿瘤还是瘤样病变[J]. 陈林莺,任彩虹,陈祥娜,张声. 中国肿瘤临床. 2012(18)
[5]Efficacy of imatinib dose escalation in Chinese gastrointestinal stromal tumor patients[J]. Jian Li,Ji-Fang Gong,Jie Li,Jing Gao,Nai-Ping Sun,Lin Shen,Laboratory of Carcinogenesis and Translational Research for the Ministry of National Education,Department of GI Oncology,Peking University School of Oncology,Beijing Cancer Hospital and Institute,Beijing 100142,China. World Journal of Gastroenterology. 2012(07)
[6]Expressions of sonic hedgehog, patched, smoothened and Gli-1 in human intestinal stromal tumors and their correlation with prognosis[J]. Ayumi Yoshizaki,Toshiyuki Nakayama,Shinji Naito,Ichiro Sekine. World Journal of Gastroenterology. 2006(35)
[7]Gastrointestinal stromal tumors in a cohort of Chinese patients in Hong Kong[J]. Kam Hoi Chan, Chun Wing Chan, Wai Hung Chow, Wai Keung Kwan, Department of Medicine, Yan Chai Hospital, Tsuen Wan, Hong Kong SAR, China Chi Kwan Kong, Department of Surgery, Yan Chai Hospital, Tsuen Wan, Hong Kong SAR, China Ka Fung Mak, Miu Yi Leung, Department of Radiology, Yan Chai Hospital, Tsuen Wan, Hong Kong SAR, China Lin Kiu Lau, Department of Pathology, Yan Chai Hospital, Tsuen Wan, Hong Kong SAR, China. World Journal of Gastroenterology. 2006(14)
本文编号:3371977
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