目的研究肝X受体(liver X receptors,LXRs)在乳腺癌中的表达及其对乳腺癌MCF-7细胞增殖的影响。方法采用免疫组化法检测LXRs在人乳腺癌组织中的蛋白表达;采用LXR激动剂T0901317处理人乳腺癌MCF-7细胞,流式细胞术检测BrdU标记MCF-7细胞...目的研究肝X受体(liver X receptors,LXRs)在乳腺癌中的表达及其对乳腺癌MCF-7细胞增殖的影响。方法采用免疫组化法检测LXRs在人乳腺癌组织中的蛋白表达;采用LXR激动剂T0901317处理人乳腺癌MCF-7细胞,流式细胞术检测BrdU标记MCF-7细胞的增殖情况。结果①LXRα和LXRβ在乳腺正常组织基本不表达,但LXRα在不同乳腺癌病变(导管原位癌和浸润性导管癌)中表达增高(P<0.05),在浸润性导管癌尤为明显;LXRβ在不同乳腺癌病变中不表达。②T0901317(10μM)处理明显抑制MCF-7细胞的增殖率(P<0.05)。结论乳腺癌组织LXRα蛋白表达明显增高,激活LXRα能够显著抑制MCF-7细胞的增殖。展开更多
To study the effect of hemoporphyrin derivative(HPD) combined with laser irradiation on human breast tumor cell line MCF-7 and normal human umbilical cord blood-derived hematopoietic cells by using MTT assay. The resu...To study the effect of hemoporphyrin derivative(HPD) combined with laser irradiation on human breast tumor cell line MCF-7 and normal human umbilical cord blood-derived hematopoietic cells by using MTT assay. The results showed that HPD plus laser irradiation was more efficient for killing MCF-7 cells than normal human umbilical cord blood-derived hematopoietic cells. The photochemical effect with laser irradiation were higher than with light irradiation and it′s effect on MCF-7 cells was higher gradually with the increase of HPD concentration.展开更多
文摘目的研究肝X受体(liver X receptors,LXRs)在乳腺癌中的表达及其对乳腺癌MCF-7细胞增殖的影响。方法采用免疫组化法检测LXRs在人乳腺癌组织中的蛋白表达;采用LXR激动剂T0901317处理人乳腺癌MCF-7细胞,流式细胞术检测BrdU标记MCF-7细胞的增殖情况。结果①LXRα和LXRβ在乳腺正常组织基本不表达,但LXRα在不同乳腺癌病变(导管原位癌和浸润性导管癌)中表达增高(P<0.05),在浸润性导管癌尤为明显;LXRβ在不同乳腺癌病变中不表达。②T0901317(10μM)处理明显抑制MCF-7细胞的增殖率(P<0.05)。结论乳腺癌组织LXRα蛋白表达明显增高,激活LXRα能够显著抑制MCF-7细胞的增殖。
文摘To study the effect of hemoporphyrin derivative(HPD) combined with laser irradiation on human breast tumor cell line MCF-7 and normal human umbilical cord blood-derived hematopoietic cells by using MTT assay. The results showed that HPD plus laser irradiation was more efficient for killing MCF-7 cells than normal human umbilical cord blood-derived hematopoietic cells. The photochemical effect with laser irradiation were higher than with light irradiation and it′s effect on MCF-7 cells was higher gradually with the increase of HPD concentration.
基金supported by the National Natural Science Foundation of China (No.81460561and No.81360502)Guangxi Natural Science Foundation (No. 2014GXNSFAA118225)the Program of Key Laboratory of High-Incidence-Tumor Prevention and Treatment(Guangxi Medical University),the Ministry of Education,China (No.GKE2018-09 and No.GK2018-11)