Carcinogenesis of lung squamous carcinoma is a complex process involving multiple events and steps. At present, there are very few special lung cancer molecular markers for an 'early-stage' diagnosis and progn...Carcinogenesis of lung squamous carcinoma is a complex process involving multiple events and steps. At present, there are very few special lung cancer molecular markers for an 'early-stage' diagnosis and prognosis evaluation. To identify tumor-associated antigens, serological proteome analysis (SERPA) of human lung squamous carcinoma cell line HTB-182 are performed. We characterized sixteen differentially expressed proteins which react with lung squamous carcinoma patient sera while not react with control sera. Some of these candidate lung squamous carcinoma-associated antigens were metabolic enzymes, such as triosephosphatase isomerase (TPIS). Some proteins were involved in the regulation of cell cycle and signal transduction. The results will provide scientific foundation for screening the molecular biomarkers used to diagnose and treat lung squamous carcinoma, as well as to elevate the patient's prognosis and provide new clue for the research of lung squamous carcinogenic mechanism. Thus, SERPA represents a valuable approach for the identification of differentially expressed proteins, which might be used as markers for the diagnosis and prognosis of lung squamous carcinoma.展开更多
目的LASP1是一种与癌细胞肌动蛋白组装动力学相关的肌动蛋白结合蛋白,其在许多肿瘤的发生演变中发挥了巨大的作用,在这个研究中我们将着重探讨LASP1对肾癌的发生发展以及演变中的作用。方法通过对肾癌细胞HTB-47和CRL-1932进行转染LASP...目的LASP1是一种与癌细胞肌动蛋白组装动力学相关的肌动蛋白结合蛋白,其在许多肿瘤的发生演变中发挥了巨大的作用,在这个研究中我们将着重探讨LASP1对肾癌的发生发展以及演变中的作用。方法通过对肾癌细胞HTB-47和CRL-1932进行转染LASP1及其上游的HIF1a si RNA,进行蛋白印迹实验、transwell以及划痕实验,观察敲低LASP1和HIF1a后,LASP1和HIF1a表达量的改变以及肾癌细胞迁移侵袭能力的变化。结果转染LASP1 si RNA后的HTB-47和CRL-1932迁移能力和侵袭能力明显受抑制。转染HIF1a si RNA后,LASP1的蛋白表达量亦下调,HTB-47和CRL-1932的迁移和侵袭能力也明显受到抑制。结论LASP1基因促进HTB-47和CRL-1932的迁移和侵袭能力,敲低LASP1的表达,可明显抑制HTB-47和CRL-1932的迁移侵袭行为。敲低HIF1a能明显改变LASP1的表达量,从而可以间接调控肾癌细胞的生物学行为。展开更多
基金Project (2001CB5102) supported by the National Basic Research Program of China Project (30500558) supported by the National Natural Science Foundation of China
文摘Carcinogenesis of lung squamous carcinoma is a complex process involving multiple events and steps. At present, there are very few special lung cancer molecular markers for an 'early-stage' diagnosis and prognosis evaluation. To identify tumor-associated antigens, serological proteome analysis (SERPA) of human lung squamous carcinoma cell line HTB-182 are performed. We characterized sixteen differentially expressed proteins which react with lung squamous carcinoma patient sera while not react with control sera. Some of these candidate lung squamous carcinoma-associated antigens were metabolic enzymes, such as triosephosphatase isomerase (TPIS). Some proteins were involved in the regulation of cell cycle and signal transduction. The results will provide scientific foundation for screening the molecular biomarkers used to diagnose and treat lung squamous carcinoma, as well as to elevate the patient's prognosis and provide new clue for the research of lung squamous carcinogenic mechanism. Thus, SERPA represents a valuable approach for the identification of differentially expressed proteins, which might be used as markers for the diagnosis and prognosis of lung squamous carcinoma.
文摘目的LASP1是一种与癌细胞肌动蛋白组装动力学相关的肌动蛋白结合蛋白,其在许多肿瘤的发生演变中发挥了巨大的作用,在这个研究中我们将着重探讨LASP1对肾癌的发生发展以及演变中的作用。方法通过对肾癌细胞HTB-47和CRL-1932进行转染LASP1及其上游的HIF1a si RNA,进行蛋白印迹实验、transwell以及划痕实验,观察敲低LASP1和HIF1a后,LASP1和HIF1a表达量的改变以及肾癌细胞迁移侵袭能力的变化。结果转染LASP1 si RNA后的HTB-47和CRL-1932迁移能力和侵袭能力明显受抑制。转染HIF1a si RNA后,LASP1的蛋白表达量亦下调,HTB-47和CRL-1932的迁移和侵袭能力也明显受到抑制。结论LASP1基因促进HTB-47和CRL-1932的迁移和侵袭能力,敲低LASP1的表达,可明显抑制HTB-47和CRL-1932的迁移侵袭行为。敲低HIF1a能明显改变LASP1的表达量,从而可以间接调控肾癌细胞的生物学行为。
