目的采用两种不同的方法进行人用疫苗生产用工作细胞库Vero细胞的鉴别,为提高人用疫苗生产用细胞的准确性及疫苗的安全性提供保障。方法采用短串联重复序列(short tandem repeat,STR)-PCR基因分型法对本所疫苗生产用Vero细胞的8个STR位...目的采用两种不同的方法进行人用疫苗生产用工作细胞库Vero细胞的鉴别,为提高人用疫苗生产用细胞的准确性及疫苗的安全性提供保障。方法采用短串联重复序列(short tandem repeat,STR)-PCR基因分型法对本所疫苗生产用Vero细胞的8个STR位点(D8S1106、D1S518、D6S1017、D17S1304、D4S2408、D5S1467、D19S245和DYS389)进行测定,并与文献报道的结果进行比对分析;采用染色体核型检查法,将Vero细胞经Giemsa染料染色,于显微镜下精确计数100个细胞的染色体后,统计染色体数为58或60条的细胞所占比例。结果 STR基因分型得到的特征性图谱与文献报道的结果完全相同,未出现三单位基因,且STR的重复数完全相同;高倍镜下精确计数100个细胞染色体数为58或60条的细胞所占比例为79%。结论本所疫苗生产用工作细胞库Vero细胞为正确细胞株,不存在污染或交叉污染的情况,为本所人用疫苗的安全性和准确性提供了保障。展开更多
目的建立用于鉴别猴源细胞及其交叉污染的短串联重复序列(Short Tandem Repeat,STR)图谱分析方法。方法选择可用于猴源细胞鉴别的10个STR位点,采用PCR-毛细管电泳分析方法分别检测猴源、人源、鼠源细胞及猴源细胞交叉污染模型细胞中的10...目的建立用于鉴别猴源细胞及其交叉污染的短串联重复序列(Short Tandem Repeat,STR)图谱分析方法。方法选择可用于猴源细胞鉴别的10个STR位点,采用PCR-毛细管电泳分析方法分别检测猴源、人源、鼠源细胞及猴源细胞交叉污染模型细胞中的10个STR位点,并验证方法的特异性及稳定性。同时对5家不同受检单位生产用的Vero细胞进行STR图谱分析。结果 STR图谱分析法可为每一个独立的猴源细胞系提供独特的STR图谱,并能有效判断猴源细胞与其他细胞间的交叉污染,且特异性及稳定性较高。采用该方法检测的5株不同受检单位生产用的Vero细胞均未发生污染。结论建立的STR图谱分析方法具有良好的特异性和稳定性,可用于不同猴源细胞系的鉴别和有效判断相关细胞间交叉污染。展开更多
AIM:To identify the differentially expressed proteins between the human immortalized seophageal epithelial cell line(SHEE)and the malignant transformed esophageal carcinoma cell line(SHEEC),and to explore new ways fo...AIM:To identify the differentially expressed proteins between the human immortalized seophageal epithelial cell line(SHEE)and the malignant transformed esophageal carcinoma cell line(SHEEC),and to explore new ways for studying esophageal carcinoma associated genes.METHODS:SHEE and SHEECcell lines were used to separate differentially expressed proteins by two-dimensionalelectrophoresis.The siler-stained2-Dgels was scanned with EDAS290 digital camera system and analyzed with the PDQuest6.2Software.Six spots in which the differentially expressed protein was more obviouw were selected and analyzed with matrix-assisted laser desorption/ionization time of flying mass spectrometry(MALDI-TOF-MS).RESULTS:There were107±4.58and115±9.91orotein spots observed in SHEEand SHEEC respectively,and the majority of these spots between the two cell lines matched each other(r=0.772),only a few were expressed differentially.After analyzed by MALDI-TOF-MSand database search for the six differentially expressed proteins,One new protein as well as other five sequence-known proteins including RNPEP-like protein,human rRNA gene upstream sequence binding transcription factor,uracil DNAglycosylase,AnnexinA2 and p300/CBP-associated facto were preliminarily identified.CONCLUSION:These differentially expressed proteins might play an importance role during malignant transformation of SHEEC from SHEE.The identification of these proteins may serve as a new way for studying esophageal carcinoma associated genes.展开更多
文摘目的采用两种不同的方法进行人用疫苗生产用工作细胞库Vero细胞的鉴别,为提高人用疫苗生产用细胞的准确性及疫苗的安全性提供保障。方法采用短串联重复序列(short tandem repeat,STR)-PCR基因分型法对本所疫苗生产用Vero细胞的8个STR位点(D8S1106、D1S518、D6S1017、D17S1304、D4S2408、D5S1467、D19S245和DYS389)进行测定,并与文献报道的结果进行比对分析;采用染色体核型检查法,将Vero细胞经Giemsa染料染色,于显微镜下精确计数100个细胞的染色体后,统计染色体数为58或60条的细胞所占比例。结果 STR基因分型得到的特征性图谱与文献报道的结果完全相同,未出现三单位基因,且STR的重复数完全相同;高倍镜下精确计数100个细胞染色体数为58或60条的细胞所占比例为79%。结论本所疫苗生产用工作细胞库Vero细胞为正确细胞株,不存在污染或交叉污染的情况,为本所人用疫苗的安全性和准确性提供了保障。
文摘目的建立用于鉴别猴源细胞及其交叉污染的短串联重复序列(Short Tandem Repeat,STR)图谱分析方法。方法选择可用于猴源细胞鉴别的10个STR位点,采用PCR-毛细管电泳分析方法分别检测猴源、人源、鼠源细胞及猴源细胞交叉污染模型细胞中的10个STR位点,并验证方法的特异性及稳定性。同时对5家不同受检单位生产用的Vero细胞进行STR图谱分析。结果 STR图谱分析法可为每一个独立的猴源细胞系提供独特的STR图谱,并能有效判断猴源细胞与其他细胞间的交叉污染,且特异性及稳定性较高。采用该方法检测的5株不同受检单位生产用的Vero细胞均未发生污染。结论建立的STR图谱分析方法具有良好的特异性和稳定性,可用于不同猴源细胞系的鉴别和有效判断相关细胞间交叉污染。
基金National Natural Science Foundation of China,NO.39900069,NO.30170428Guangdong Provincial Natural Science Foundation,NO.990799,NO.010431+2 种基金Guangdong provincial College Natural Science Foundation,NO.200033Guangdong provincial medical Scientific Foundation,NO.A2001419Research and Development Foundation of Shantou University,NO.L0004,NO.L00012.
文摘AIM:To identify the differentially expressed proteins between the human immortalized seophageal epithelial cell line(SHEE)and the malignant transformed esophageal carcinoma cell line(SHEEC),and to explore new ways for studying esophageal carcinoma associated genes.METHODS:SHEE and SHEECcell lines were used to separate differentially expressed proteins by two-dimensionalelectrophoresis.The siler-stained2-Dgels was scanned with EDAS290 digital camera system and analyzed with the PDQuest6.2Software.Six spots in which the differentially expressed protein was more obviouw were selected and analyzed with matrix-assisted laser desorption/ionization time of flying mass spectrometry(MALDI-TOF-MS).RESULTS:There were107±4.58and115±9.91orotein spots observed in SHEEand SHEEC respectively,and the majority of these spots between the two cell lines matched each other(r=0.772),only a few were expressed differentially.After analyzed by MALDI-TOF-MSand database search for the six differentially expressed proteins,One new protein as well as other five sequence-known proteins including RNPEP-like protein,human rRNA gene upstream sequence binding transcription factor,uracil DNAglycosylase,AnnexinA2 and p300/CBP-associated facto were preliminarily identified.CONCLUSION:These differentially expressed proteins might play an importance role during malignant transformation of SHEEC from SHEE.The identification of these proteins may serve as a new way for studying esophageal carcinoma associated genes.