中国病理生理杂志
中國病理生理雜誌
중국병리생리잡지
Chinese Journal of Pathophysiology
2015年
9期
1584-1588
,共5页
应晓%王再红%王振华
應曉%王再紅%王振華
응효%왕재홍%왕진화
微小RNA-193b%Mcl-1%乳腺癌%MDA-MB-231细胞%多柔比星
微小RNA-193b%Mcl-1%乳腺癌%MDA-MB-231細胞%多柔比星
미소RNA-193b%Mcl-1%유선암%MDA-MB-231세포%다유비성
MicroRNA-193b%Mcl-1%Breast cancer%MDA-MB-231 cells%Doxorubicin
目的:研究微小RNA( microRNA,miR)-193b是否能增强多柔比星对乳腺癌细胞的杀伤效力及机制。方法:用real-time PCR方法检测乳腺癌患者及健康对照者血浆中的miR-193b表达水平。 MTT法检测miR-193b联合多柔比星对乳腺癌细胞系MDA-MB-231的杀伤效力。利用生物信息学、real-time PCR及Western blot 方法验证miR-193b是否调节乳腺癌细胞Mcl-1的表达。构建Mcl-1真核表达载体,MTT法检测Mcl-1表达载体转染对miR-193b联合多柔比星治疗乳腺癌疗效的影响。结果:乳腺癌患者血浆中miR-193b表达水平显著低于对照组。 miR-193b联合多柔比星治疗组对MDA-MB-231细胞的杀伤效力显著高于多柔比星单治疗组。 miR-193b转染后,MDA-MB-231细胞Mcl-1的mRNA及蛋白表达水平均下降。 miR-193b联合多柔比星在Mcl-1表达载体转染后对MDA-MB-231细胞的杀伤活性显著低于未转染Mcl-1表达载体的miR-193b联合多柔比星组。结论: miR-193b通过靶向于Mcl-1增强多柔比星对乳腺癌细胞的杀伤效力。
目的:研究微小RNA( microRNA,miR)-193b是否能增彊多柔比星對乳腺癌細胞的殺傷效力及機製。方法:用real-time PCR方法檢測乳腺癌患者及健康對照者血漿中的miR-193b錶達水平。 MTT法檢測miR-193b聯閤多柔比星對乳腺癌細胞繫MDA-MB-231的殺傷效力。利用生物信息學、real-time PCR及Western blot 方法驗證miR-193b是否調節乳腺癌細胞Mcl-1的錶達。構建Mcl-1真覈錶達載體,MTT法檢測Mcl-1錶達載體轉染對miR-193b聯閤多柔比星治療乳腺癌療效的影響。結果:乳腺癌患者血漿中miR-193b錶達水平顯著低于對照組。 miR-193b聯閤多柔比星治療組對MDA-MB-231細胞的殺傷效力顯著高于多柔比星單治療組。 miR-193b轉染後,MDA-MB-231細胞Mcl-1的mRNA及蛋白錶達水平均下降。 miR-193b聯閤多柔比星在Mcl-1錶達載體轉染後對MDA-MB-231細胞的殺傷活性顯著低于未轉染Mcl-1錶達載體的miR-193b聯閤多柔比星組。結論: miR-193b通過靶嚮于Mcl-1增彊多柔比星對乳腺癌細胞的殺傷效力。
목적:연구미소RNA( microRNA,miR)-193b시부능증강다유비성대유선암세포적살상효력급궤제。방법:용real-time PCR방법검측유선암환자급건강대조자혈장중적miR-193b표체수평。 MTT법검측miR-193b연합다유비성대유선암세포계MDA-MB-231적살상효력。이용생물신식학、real-time PCR급Western blot 방법험증miR-193b시부조절유선암세포Mcl-1적표체。구건Mcl-1진핵표체재체,MTT법검측Mcl-1표체재체전염대miR-193b연합다유비성치료유선암료효적영향。결과:유선암환자혈장중miR-193b표체수평현저저우대조조。 miR-193b연합다유비성치료조대MDA-MB-231세포적살상효력현저고우다유비성단치료조。 miR-193b전염후,MDA-MB-231세포Mcl-1적mRNA급단백표체수평균하강。 miR-193b연합다유비성재Mcl-1표체재체전염후대MDA-MB-231세포적살상활성현저저우미전염Mcl-1표체재체적miR-193b연합다유비성조。결론: miR-193b통과파향우Mcl-1증강다유비성대유선암세포적살상효력。
AIM:To investigate the effect of microRNA ( miR)-193b on doxorubicin therapy in breast cancer in vitro.METHODS:miR-193b level in plasma was detected by real-time PCR in the patients with breast cancer or the healthy controls.MTT assay was performed to measure the inhibitory effect of miR-193b plus doxorubicin on the growth of MDA-MB-231 cells.Bioinformatics, real-time PCR and Western blot were performed to determine whether the expression of Mcl-1 was regulated by miR-193b.Mcl-1 expression vector was constructed , and the role of Mcl-1 vector toward miR-193b plus doxorubicin-induced cytotoxicity in MDA-MB-231 cells was observed by MTT assay .RESULTS:Down-regulation of miR-193b was found in breast cancer patients .The miR-193b plus doxorubicin group showed a higher growth inhibition than cisplation group in MDA-MB-231 cells.The expression of Mcl-1 at both mRNA and protein levels was down-regulated after miR-193b transfection.The growth inhibition of MDA-MB-231 cells treated with miR-193b plus doxorubicin was sig-nificantly decreased after the transfection of Mcl-1 expression vector.CONCLUSION: miR-193b sensitizes doxorubicin-induced cytotoxicity by targeting Mcl-1 in breast cancer .