中华劳动卫生职业病杂志
中華勞動衛生職業病雜誌
중화노동위생직업병잡지
CHINESE JOURNAL OF INDUSTRIAL HYGIENE AND OCCUPATIONAL DISEASES
2011年
9期
678-681
,共4页
王威%李智涛%祝寒松%赵勇%王丽霞%燕贞%李时恩%许东%吴卫东%吴拥军%吴逸明
王威%李智濤%祝寒鬆%趙勇%王麗霞%燕貞%李時恩%許東%吳衛東%吳擁軍%吳逸明
왕위%리지도%축한송%조용%왕려하%연정%리시은%허동%오위동%오옹군%오일명
煤焦油%细胞转化,肿瘤%端粒%重复序列,核酸
煤焦油%細胞轉化,腫瘤%耑粒%重複序列,覈痠
매초유%세포전화,종류%단립%중복서렬,핵산
Coal tar%,Cell transformation,neoplastic%Telomere%Repetitive sequences,nucleic acid
目的 通过检测端粒保卫蛋白复合体中端粒保卫蛋白1 (POT1)、端粒重复序列结合因子1(TRF1)和TRF2在煤焦沥青烟致永生化人支气管上皮细胞(BEAS-2B)癌变细胞中的表达变化,探讨其在煤焦沥青烟致肺癌发生中的作用。方法 用中温煤焦沥青烟提取物作为诱导剂,建立BEAS-2B的恶性转化模型,用实时荧光定量反转录-聚合酶链反应法(RT-PCR)检测POT1、TRF1和TRF2基因mRNA表达水平;细胞爬片免疫组化半定量法检测其蛋白表达改变。结果 BEAS-2B恶性转化细胞POT1和TRF1基因mRNA表达水平(分别为:0.63-0.04,0.36-0.01)和蛋白表达水平(分别为:0.36±0.05,0.09±0.03)均下调,与正常对照组(mRNA:POT1:1.00±0.04,TRF1:1.01±0.16;蛋白:POT1:0.55±0.07,TRF1:0.27±0.07)和二甲亚砜溶剂对照组(mRNA:POT1:0.89±0.12,TRF1:0.90±0.08;蛋白:POT1:0.55±0.10,TRF1:0.26±0.04)相比,差异均有统计学意义(P<0.05)。BEAS-2B恶性转化细胞TRF2基因mRNA表达水平( 1.45±0.07)和蛋白表达水平(0.88±0.06)均上调,与正常对照组(mRNA:1.00±0.07,蛋白:0.48±0.06)和二甲亚砜溶剂对照组(mRNA:1.00±0.06,蛋白:0.50±0.06)相比,差异均有统计学意义(P<0.05)。结论 在煤焦沥青烟致支气管上皮细胞恶性演化过程中,POT1、TRF1和TRF2基因和蛋白表达水平发生变化。
目的 通過檢測耑粒保衛蛋白複閤體中耑粒保衛蛋白1 (POT1)、耑粒重複序列結閤因子1(TRF1)和TRF2在煤焦瀝青煙緻永生化人支氣管上皮細胞(BEAS-2B)癌變細胞中的錶達變化,探討其在煤焦瀝青煙緻肺癌髮生中的作用。方法 用中溫煤焦瀝青煙提取物作為誘導劑,建立BEAS-2B的噁性轉化模型,用實時熒光定量反轉錄-聚閤酶鏈反應法(RT-PCR)檢測POT1、TRF1和TRF2基因mRNA錶達水平;細胞爬片免疫組化半定量法檢測其蛋白錶達改變。結果 BEAS-2B噁性轉化細胞POT1和TRF1基因mRNA錶達水平(分彆為:0.63-0.04,0.36-0.01)和蛋白錶達水平(分彆為:0.36±0.05,0.09±0.03)均下調,與正常對照組(mRNA:POT1:1.00±0.04,TRF1:1.01±0.16;蛋白:POT1:0.55±0.07,TRF1:0.27±0.07)和二甲亞砜溶劑對照組(mRNA:POT1:0.89±0.12,TRF1:0.90±0.08;蛋白:POT1:0.55±0.10,TRF1:0.26±0.04)相比,差異均有統計學意義(P<0.05)。BEAS-2B噁性轉化細胞TRF2基因mRNA錶達水平( 1.45±0.07)和蛋白錶達水平(0.88±0.06)均上調,與正常對照組(mRNA:1.00±0.07,蛋白:0.48±0.06)和二甲亞砜溶劑對照組(mRNA:1.00±0.06,蛋白:0.50±0.06)相比,差異均有統計學意義(P<0.05)。結論 在煤焦瀝青煙緻支氣管上皮細胞噁性縯化過程中,POT1、TRF1和TRF2基因和蛋白錶達水平髮生變化。
목적 통과검측단립보위단백복합체중단립보위단백1 (POT1)、단립중복서렬결합인자1(TRF1)화TRF2재매초력청연치영생화인지기관상피세포(BEAS-2B)암변세포중적표체변화,탐토기재매초력청연치폐암발생중적작용。방법 용중온매초력청연제취물작위유도제,건립BEAS-2B적악성전화모형,용실시형광정량반전록-취합매련반응법(RT-PCR)검측POT1、TRF1화TRF2기인mRNA표체수평;세포파편면역조화반정량법검측기단백표체개변。결과 BEAS-2B악성전화세포POT1화TRF1기인mRNA표체수평(분별위:0.63-0.04,0.36-0.01)화단백표체수평(분별위:0.36±0.05,0.09±0.03)균하조,여정상대조조(mRNA:POT1:1.00±0.04,TRF1:1.01±0.16;단백:POT1:0.55±0.07,TRF1:0.27±0.07)화이갑아풍용제대조조(mRNA:POT1:0.89±0.12,TRF1:0.90±0.08;단백:POT1:0.55±0.10,TRF1:0.26±0.04)상비,차이균유통계학의의(P<0.05)。BEAS-2B악성전화세포TRF2기인mRNA표체수평( 1.45±0.07)화단백표체수평(0.88±0.06)균상조,여정상대조조(mRNA:1.00±0.07,단백:0.48±0.06)화이갑아풍용제대조조(mRNA:1.00±0.06,단백:0.50±0.06)상비,차이균유통계학의의(P<0.05)。결론 재매초력청연치지기관상피세포악성연화과정중,POT1、TRF1화TRF2기인화단백표체수평발생변화。
Objective By testing the changes of telomere binding protein in malignant transformation BEAS-2B cells induced by coal tar pitch smoke extracts, to study the role of protection of telomeres 1 (POT1), telomeric repeat binding factor 1 (TRF1) and TRF2 in tumorgenesis that contact with coal tar pitch.Methods The BEAS-2B cells were induced by coal tar pitch smoke extracts to form malignant transformation cell model in vitro. The gene expression levels of mRNA were assessed by real-time quantitative RT-PCR, the protein expression variations were determined by cell culture overslip of immunohistochemical methods. Results In malignant transformation cells, the mRNA expression level (POT1: 0.63±0.04, TRF1: 0.36±0.01) and the protein expression level (POT1 : 0.36±0.05, TRF1: 0.09±0.03) of POT1 and TRF1 was statistically significant decreased compared to that of BEAS-2B group (mRNA: POT1: 1.00±0.04, TRF1: 1.01±0.16; protein: POT1: 0.55±0.07, TRF 1: 0.27±0.07) and DMSO group (mRNA: POT1: 0.89±0.12, TRF 1: 0.90±0.08; protein: POT1: 0.55±0.10, TRF1: 0.26±0.04)(P<0.05); mRNA expression level (1.45±0.07) and the protein expression level (0.88±0.06) of TRF2 was increased compared to that of BEA~2B group (mRNA: 1.00±0.07, protein: 0.48±0.06)and DMSO group (mRNA: 1.00±0.06, protein: 0.50±0.06) (P<0.05). Conclusion The change of gene and protein expression level in POT1, TRF1, and TRF2 involved in the process that evolved into malignant transformation in bronchial epithelial cells BEAS-2B induced by coal tar pitch smoke extracts.