背景与目的:淋巴结转移是影响恶性肿瘤分期、治疗和预后的重要因素,恶性肿瘤经过综合治疗后残留淋巴结或新出现的转移淋巴结,往往治疗比较困难。本研究旨在评价CT导向下125I粒子植入治疗晚期肿瘤转移淋巴结的临床价值。方法:回顾性分析2...背景与目的:淋巴结转移是影响恶性肿瘤分期、治疗和预后的重要因素,恶性肿瘤经过综合治疗后残留淋巴结或新出现的转移淋巴结,往往治疗比较困难。本研究旨在评价CT导向下125I粒子植入治疗晚期肿瘤转移淋巴结的临床价值。方法:回顾性分析2003年11月至2007年4月中山大学肿瘤防治中心收治的47例经病理确诊为恶性肿瘤并接受经CT导向下125I粒子植入治疗的患者临床资料。转移淋巴结共计57枚,直径1.0～5.5cm;其中直径<2cm20枚(35.1%),≥2cm、<3cm21枚(36.8%),≥3cm、<4cm10枚(17.5%),≥4cm6枚(10.5%)。采用计算机立体定位计划系统(treatment plan system,TPS)计算布源,在CT导向下将(2.2～3.3)×107Mq活度的125I粒子相隔1.0～1.5cm平面播植。手术结束后1～3个月复查CT或PET-CT。结果:治疗前17例有疼痛症状的患者中13例于术后5～14d内疼痛缓解,有效率76.5%。47例患者中淋巴结完全缓解38例(80.9%),部分缓解4例(8.5%),无变化3例(6.4%),进展2例(4.3%),总有效率89.4%。主要的并发症为少量出血7例(14.9%)。结论:CT导向下125I粒子植入治疗恶性肿瘤转移淋巴结近期效果好,安全性高,创伤小,并发症发生率低。展开更多
Objective: To isolate human tumor metastasis suppressive DNA sequence and to study the molecular mechanisms regulating tumor metastasis. Methods: A mouse lung adenocarcinoma cell clone 12 derived from its parent cell ...Objective: To isolate human tumor metastasis suppressive DNA sequence and to study the molecular mechanisms regulating tumor metastasis. Methods: A mouse lung adenocarcinoma cell clone 12 derived from its parent cell line LM2, which had been transduced with normal human genomic DNA, was previously reported. Compared with LM2, the metastatic potential of clone 12 was very much decreased. Clone 12 was used in this study to amplify the human DNA fragments by Inter Alu PCR technique. The human DNA fragments obtained were then transfected into LM2 cells and their malignant phenotype was tested in vitro and in vivo, and compared with that of the untransfected LM2 cells.Results Three human DNA fragments of 700, 500 and 300 bp were isolated. DNA sequencing revealed that the 700bp fragment does not show homology with hitherto reported genes and was accepted by the Genbank (pt712 U67835). In vitro proliferation and colony formation in soft agar of the 700 bp fragment-transfected LM2 cells were significantly inhibited as compared to the untransfected LM2 cells. Upon subcutaneous inoculation to syngeneic T739 mice, the 700bp-transfected LM2 cells grew more slowly and smaller tumors developed compared to the untransfected ones. Moreover, lung metastasis was not found in 6 of 10 mice inoculated with the 700bp-transfected LM2 cells, while it was found in 9 of 10 mice inoculated with the untransfected LM2 cells. The difference was statistically significant (P<0.001). The frequency of lymph node metastasis was also statistically different between the 2 groups of mice.Conclusion The newly isolated 700bp human DNA fragment may be a metastasis suppressor gene of malignant tumor.展开更多
文摘背景与目的:淋巴结转移是影响恶性肿瘤分期、治疗和预后的重要因素,恶性肿瘤经过综合治疗后残留淋巴结或新出现的转移淋巴结,往往治疗比较困难。本研究旨在评价CT导向下125I粒子植入治疗晚期肿瘤转移淋巴结的临床价值。方法:回顾性分析2003年11月至2007年4月中山大学肿瘤防治中心收治的47例经病理确诊为恶性肿瘤并接受经CT导向下125I粒子植入治疗的患者临床资料。转移淋巴结共计57枚,直径1.0～5.5cm;其中直径<2cm20枚(35.1%),≥2cm、<3cm21枚(36.8%),≥3cm、<4cm10枚(17.5%),≥4cm6枚(10.5%)。采用计算机立体定位计划系统(treatment plan system,TPS)计算布源,在CT导向下将(2.2～3.3)×107Mq活度的125I粒子相隔1.0～1.5cm平面播植。手术结束后1～3个月复查CT或PET-CT。结果:治疗前17例有疼痛症状的患者中13例于术后5～14d内疼痛缓解,有效率76.5%。47例患者中淋巴结完全缓解38例(80.9%),部分缓解4例(8.5%),无变化3例(6.4%),进展2例(4.3%),总有效率89.4%。主要的并发症为少量出血7例(14.9%)。结论:CT导向下125I粒子植入治疗恶性肿瘤转移淋巴结近期效果好,安全性高,创伤小,并发症发生率低。
基金the National Natural Science Foundation of China (No. 39370761 ).
文摘Objective: To isolate human tumor metastasis suppressive DNA sequence and to study the molecular mechanisms regulating tumor metastasis. Methods: A mouse lung adenocarcinoma cell clone 12 derived from its parent cell line LM2, which had been transduced with normal human genomic DNA, was previously reported. Compared with LM2, the metastatic potential of clone 12 was very much decreased. Clone 12 was used in this study to amplify the human DNA fragments by Inter Alu PCR technique. The human DNA fragments obtained were then transfected into LM2 cells and their malignant phenotype was tested in vitro and in vivo, and compared with that of the untransfected LM2 cells.Results Three human DNA fragments of 700, 500 and 300 bp were isolated. DNA sequencing revealed that the 700bp fragment does not show homology with hitherto reported genes and was accepted by the Genbank (pt712 U67835). In vitro proliferation and colony formation in soft agar of the 700 bp fragment-transfected LM2 cells were significantly inhibited as compared to the untransfected LM2 cells. Upon subcutaneous inoculation to syngeneic T739 mice, the 700bp-transfected LM2 cells grew more slowly and smaller tumors developed compared to the untransfected ones. Moreover, lung metastasis was not found in 6 of 10 mice inoculated with the 700bp-transfected LM2 cells, while it was found in 9 of 10 mice inoculated with the untransfected LM2 cells. The difference was statistically significant (P<0.001). The frequency of lymph node metastasis was also statistically different between the 2 groups of mice.Conclusion The newly isolated 700bp human DNA fragment may be a metastasis suppressor gene of malignant tumor.
