Schizophrenia is a disease that affects many areas of the brain. The dopamine hypothesis is one of the most widely-accepted ideas in the pathophysiology of schizophrenia. Besides alterations in the dopaminergic system...Schizophrenia is a disease that affects many areas of the brain. The dopamine hypothesis is one of the most widely-accepted ideas in the pathophysiology of schizophrenia. Besides alterations in the dopaminergic system in the central nervous system, there have been several reports of changes in dopaminergic systems in the peripheral blood of schizophrenic patients. Several reports have shown that dopamine receptor expression by lymphocytes is altered in patients with schizophrenia, but the results have been conflicting. We therefore re-assessed D3R and D4R mRNA levels in 11 patients with schizophrenia and 12 healthy subjects and correlated levels with severity of symptoms. D3R and D4R expression in lymphocytes and granulocytes was measured by quantitative RT-PCR and the severity of symptoms and cognitive impairment were assessed using the PANSS and BACS-J. There were no significant differences in mean D3R or D4R mRNA levels in lymphocytes from schizophrenic patients and controls and no significant difference in mean D4R mRNA levels in granulocytes (D3R mRNA undetectable). In patients with schizophrenia, D3R expression was inversely correlated with the total PANSS score (r = 0.768, p = 0.009), while D4R expression was positively correlated with working memory scales (r = 0.895, p = 0.001). In conclusion, these results imply that lymphocyte D3R and D4R are involved in the mechanisms of the disorder and could be used as target markers in the treatment of schizophrenia.展开更多
目的探讨血浆外泌体源性miR-20a-5p通过靶向PIK3R1对雌激素受体阳性的乳腺癌(estrogen receptor-positive breast cancer,ER(+)BC)骨转移的影响。方法借助生物信息学网站检索与ER(+)BC骨转移相关的数据集,选择miR-20a-5p纳入研究。收集9...目的探讨血浆外泌体源性miR-20a-5p通过靶向PIK3R1对雌激素受体阳性的乳腺癌(estrogen receptor-positive breast cancer,ER(+)BC)骨转移的影响。方法借助生物信息学网站检索与ER(+)BC骨转移相关的数据集,选择miR-20a-5p纳入研究。收集90例ER(+)BC患者与相对应的健康人的血浆,检测血浆中PIK3R1的表达,从血浆中提取外泌体,检测外泌体中miR-20a-5p的表达。双荧光素酶报告实验验证miR-20a-5p与PIK3R1的靶向调控关系。分别将转染NC-inhibitor、miR-inhibitor的外泌体或转染si-NC、si-PIK3R1的ER(+)BC细胞注射到小鼠左心室,Micro-CT扫描骨组织并进行骨组织TRAP染色。将转染NC-inhibitor、miR-inhibitor的外泌体与转染si-NC、si-PIK3R1的ER(+)BC细胞共培养后,使用Western blot检测破骨细胞分子c-fos、NFATc1的表达。结果qRT-PCR检测发现较正常血浆外泌体(1±0.26)或细胞(1±0.13),miR-20a-5p在ER(+)BC血浆外泌体(1.49±0.27)(t=12.40,P<0.001)及BC细胞系MCF-7(1.64±0.13)(t=6.03,P=0.004)、BT474(1.49±0.11)(t=4.98,P=0.008)、T47D(1.98±0.15)(t=8.55,P=0.001)中均表达升高。而与正常血浆外泌体(1±0.25)或细胞(1±0.10)比较,PIK3R1在ER(+)BC血浆外泌体(0.69±0.24)(t=8.48,P<0.001)及ER(+)BC细胞系MCF-7(0.73±0.05)(t=4.18,P=0.014)、BT474(0.61±0.05)(t=6.04,P=0.004)、T47D(0.34±0.04)(t=10.61,P<0.001)中则表达降低。PIK3R1在血浆(t=8.48,P<0.001)及ER(+)BC细胞系MCF-7(t=4.18,P=0.014)、BT474(t=6.04,P=0.004)、T47D(t=10.61,P<0.001)中则表达降低。PIK3R1被证实为miR-20a-5p的靶基因。与NC-inhibitor组小鼠相比,miR-inhibitor组小鼠的骨小梁组织体积(t=3.32,P=0.029)、骨小梁区域体积(t=6.24,P=0.003)、骨体积分数(t=7.35,P=0.002)和骨矿物密度(t=13.72,P<0.001)均增加,成熟破骨细胞数量减少。与NC-inhibitor组比较,miR-inhibitor组细胞中c-fos(t=9.04,P=0.001)和NFATc1(t=13.42,P<0.001)的表达减少。与miR-inhibitor+si-NC组相比,miR-inhibitor+si-PIK3R1组中小鼠的骨小梁组织体积(t=3.03,P=0.展开更多
文摘Schizophrenia is a disease that affects many areas of the brain. The dopamine hypothesis is one of the most widely-accepted ideas in the pathophysiology of schizophrenia. Besides alterations in the dopaminergic system in the central nervous system, there have been several reports of changes in dopaminergic systems in the peripheral blood of schizophrenic patients. Several reports have shown that dopamine receptor expression by lymphocytes is altered in patients with schizophrenia, but the results have been conflicting. We therefore re-assessed D3R and D4R mRNA levels in 11 patients with schizophrenia and 12 healthy subjects and correlated levels with severity of symptoms. D3R and D4R expression in lymphocytes and granulocytes was measured by quantitative RT-PCR and the severity of symptoms and cognitive impairment were assessed using the PANSS and BACS-J. There were no significant differences in mean D3R or D4R mRNA levels in lymphocytes from schizophrenic patients and controls and no significant difference in mean D4R mRNA levels in granulocytes (D3R mRNA undetectable). In patients with schizophrenia, D3R expression was inversely correlated with the total PANSS score (r = 0.768, p = 0.009), while D4R expression was positively correlated with working memory scales (r = 0.895, p = 0.001). In conclusion, these results imply that lymphocyte D3R and D4R are involved in the mechanisms of the disorder and could be used as target markers in the treatment of schizophrenia.
文摘目的探讨血浆外泌体源性miR-20a-5p通过靶向PIK3R1对雌激素受体阳性的乳腺癌(estrogen receptor-positive breast cancer,ER(+)BC)骨转移的影响。方法借助生物信息学网站检索与ER(+)BC骨转移相关的数据集,选择miR-20a-5p纳入研究。收集90例ER(+)BC患者与相对应的健康人的血浆,检测血浆中PIK3R1的表达,从血浆中提取外泌体,检测外泌体中miR-20a-5p的表达。双荧光素酶报告实验验证miR-20a-5p与PIK3R1的靶向调控关系。分别将转染NC-inhibitor、miR-inhibitor的外泌体或转染si-NC、si-PIK3R1的ER(+)BC细胞注射到小鼠左心室,Micro-CT扫描骨组织并进行骨组织TRAP染色。将转染NC-inhibitor、miR-inhibitor的外泌体与转染si-NC、si-PIK3R1的ER(+)BC细胞共培养后,使用Western blot检测破骨细胞分子c-fos、NFATc1的表达。结果qRT-PCR检测发现较正常血浆外泌体(1±0.26)或细胞(1±0.13),miR-20a-5p在ER(+)BC血浆外泌体(1.49±0.27)(t=12.40,P<0.001)及BC细胞系MCF-7(1.64±0.13)(t=6.03,P=0.004)、BT474(1.49±0.11)(t=4.98,P=0.008)、T47D(1.98±0.15)(t=8.55,P=0.001)中均表达升高。而与正常血浆外泌体(1±0.25)或细胞(1±0.10)比较,PIK3R1在ER(+)BC血浆外泌体(0.69±0.24)(t=8.48,P<0.001)及ER(+)BC细胞系MCF-7(0.73±0.05)(t=4.18,P=0.014)、BT474(0.61±0.05)(t=6.04,P=0.004)、T47D(0.34±0.04)(t=10.61,P<0.001)中则表达降低。PIK3R1在血浆(t=8.48,P<0.001)及ER(+)BC细胞系MCF-7(t=4.18,P=0.014)、BT474(t=6.04,P=0.004)、T47D(t=10.61,P<0.001)中则表达降低。PIK3R1被证实为miR-20a-5p的靶基因。与NC-inhibitor组小鼠相比,miR-inhibitor组小鼠的骨小梁组织体积(t=3.32,P=0.029)、骨小梁区域体积(t=6.24,P=0.003)、骨体积分数(t=7.35,P=0.002)和骨矿物密度(t=13.72,P<0.001)均增加,成熟破骨细胞数量减少。与NC-inhibitor组比较,miR-inhibitor组细胞中c-fos(t=9.04,P=0.001)和NFATc1(t=13.42,P<0.001)的表达减少。与miR-inhibitor+si-NC组相比,miR-inhibitor+si-PIK3R1组中小鼠的骨小梁组织体积(t=3.03,P=0.
