研究石菖蒲和α-细辛醚抵抗大鼠疲劳运动后学习记忆下降的RGS14/MEK/ERK信号通路作用机制。80只SD大鼠按完全随机法分为:正常组(normal,Nor)、运动组(exercise,E)、运动+石菖蒲组(exercise+Acorus tatarinowii Schott,EAT)、运动+α-细...研究石菖蒲和α-细辛醚抵抗大鼠疲劳运动后学习记忆下降的RGS14/MEK/ERK信号通路作用机制。80只SD大鼠按完全随机法分为:正常组(normal,Nor)、运动组(exercise,E)、运动+石菖蒲组(exercise+Acorus tatarinowii Schott,EAT)、运动+α-细辛醚组(exercise+α-asarone,EαA)、运动+石菖蒲+RGS14拮抗剂CCG-63802组(EATC)、运动+α-细辛醚+RGS14拮抗剂CCG-63802(EαAR)、运动+石菖蒲+MEK拮抗剂U0126组(EATU)、运动+α-细辛醚+MEK拮抗剂U0126组(EαAU),每组10只。开展水迷宫实验进行学习记忆检测;利用免疫组化、免疫印迹(Western blot)和荧光实时定量PCR(RT-PCR)等方法检测G蛋白信号调节蛋白14(regulator of G protein signaling 14,RGS14)、Raf-1、磷酸化丝裂原活化蛋白激酶激酶(phosphorylated mitogen-activated protein kinase kinase,p-MEK)和磷酸化细胞外信号调节激酶1/2(phosphorylated extracellular signal-regulated kinase 1/2,p-ERK1/2)表达水平。结果表明EAT和EαA组大鼠逃避潜伏期显著低于E组;穿越平台次数显著高于E组(P<0.01)。EATC和EαAR组大鼠逃避潜伏期最短,穿越平台次数最多(P<0.01)。EATU和EαAU大鼠逃避潜伏期最长,穿越平台次数最少(P<0.01)。EAT和EαA组RGS14蛋白和mRNA表达水平显著低于E组,Raf-1、p-MEK和p-ERK1/2表达水平则显著高于E组(P<0.01)。EATC和EαAR组RGS14蛋白和mRNA表达水平最低,显著低于其他各组,Raf-1、p-MEK和p-ERK1/2表达水平最高,显著高于其他各组(P<0.01或P<0.05)。EATU和EαAU组p-MEK、p-ERK1/2表达水平最低,显著低于其他各组(P<0.01)。以上实验结果表明石菖蒲和α-细辛醚能够基于对海马RGS14/MEK/ERK信号通路的调节,从而显著提高疲劳运动大鼠的学习记忆。展开更多
Background:Glioma is the most common tumor of the central nervous system with a poor prognosis.This study aims to explore the role of calcium/calmodulin-dependent protein kinase IIβ(CAMK2B)in regulating the malignant...Background:Glioma is the most common tumor of the central nervous system with a poor prognosis.This study aims to explore the role of calcium/calmodulin-dependent protein kinase IIβ(CAMK2B)in regulating the malignant progression of glioma cells,as well as the molecular mechanisms underlying these malignant behaviors.Methods:The correlation between CAMK2B expression in gliomas and patient prognosis was analyzed using immunohistochemistry,quantitative reverse transcription polymerase chain reaction(qRT-PCR),and western blot.Furthermore,the study explored the role of CAMK2B in glioma cell proliferation,invasion,and migration using cell counting kit-8(CCK-8),5-Ethynyl-2′-deoxyuridine(EdU),wound healing,transwell,and in vivo tumor xenograft assays.Result:Patients with high CAMK2B expression exhibited significantly better prognostic outcomes compared to those with low expression levels.Furthermore,CAMK2B expression was significantly lower in glioma tissues and cells compared to both normal brain tissue and human astrocyte cell lines.Notably,overexpression of CAMK2B in glioma cells led to an approximate 40%reduction in proliferative capacity and a 60–70%decrease in invasive and migratory abilities,compared to control glioma cells.These differences were statistically significant at p<0.05.Conversely,knockdown of CAMK2B using siRNA-CAMK2B significantly enhanced the proliferative,invasive,and migratory capabilities of glioma cells in both in vitro and in vivo settings,enhancing these abilities by 1.5 to 3 times.Notably,these effects were reversed through the application of the Rat Sarcoma viral oncogene homolog(Ras)pathway inhibitor,Salirasib.Western blot analysis revealed that knockdown of CAMK2B led to activation of the Ras/Rapidly Accelerated Fibrosarcoma(Raf)/Mitogen-activated protein kinase kinase(MEK)/Extracellular signal-regulated kinase(ERK)signaling pathway in glioma cell lines,whereas overexpression of CAMK2B resulted in the suppression of this pathway.Conclusion:CAMK2B inhibits glioma proliferation,invasion,andmigration through the Ras/Raf/MEK/ERK signaling pathway.展开更多
文摘研究石菖蒲和α-细辛醚抵抗大鼠疲劳运动后学习记忆下降的RGS14/MEK/ERK信号通路作用机制。80只SD大鼠按完全随机法分为:正常组(normal,Nor)、运动组(exercise,E)、运动+石菖蒲组(exercise+Acorus tatarinowii Schott,EAT)、运动+α-细辛醚组(exercise+α-asarone,EαA)、运动+石菖蒲+RGS14拮抗剂CCG-63802组(EATC)、运动+α-细辛醚+RGS14拮抗剂CCG-63802(EαAR)、运动+石菖蒲+MEK拮抗剂U0126组(EATU)、运动+α-细辛醚+MEK拮抗剂U0126组(EαAU),每组10只。开展水迷宫实验进行学习记忆检测;利用免疫组化、免疫印迹(Western blot)和荧光实时定量PCR(RT-PCR)等方法检测G蛋白信号调节蛋白14(regulator of G protein signaling 14,RGS14)、Raf-1、磷酸化丝裂原活化蛋白激酶激酶(phosphorylated mitogen-activated protein kinase kinase,p-MEK)和磷酸化细胞外信号调节激酶1/2(phosphorylated extracellular signal-regulated kinase 1/2,p-ERK1/2)表达水平。结果表明EAT和EαA组大鼠逃避潜伏期显著低于E组;穿越平台次数显著高于E组(P<0.01)。EATC和EαAR组大鼠逃避潜伏期最短,穿越平台次数最多(P<0.01)。EATU和EαAU大鼠逃避潜伏期最长,穿越平台次数最少(P<0.01)。EAT和EαA组RGS14蛋白和mRNA表达水平显著低于E组,Raf-1、p-MEK和p-ERK1/2表达水平则显著高于E组(P<0.01)。EATC和EαAR组RGS14蛋白和mRNA表达水平最低,显著低于其他各组,Raf-1、p-MEK和p-ERK1/2表达水平最高,显著高于其他各组(P<0.01或P<0.05)。EATU和EαAU组p-MEK、p-ERK1/2表达水平最低,显著低于其他各组(P<0.01)。以上实验结果表明石菖蒲和α-细辛醚能够基于对海马RGS14/MEK/ERK信号通路的调节,从而显著提高疲劳运动大鼠的学习记忆。
基金supported by the Natural Science Foundation of Hebei Province(H2021206037)the Government-funded Project on Training of Outstanding Clinical Medical Personnel of Hebei Province in the year 2021(303-16-20-06)the Medical Research Project of Hebei Provincial Health Commission(20230031).
文摘Background:Glioma is the most common tumor of the central nervous system with a poor prognosis.This study aims to explore the role of calcium/calmodulin-dependent protein kinase IIβ(CAMK2B)in regulating the malignant progression of glioma cells,as well as the molecular mechanisms underlying these malignant behaviors.Methods:The correlation between CAMK2B expression in gliomas and patient prognosis was analyzed using immunohistochemistry,quantitative reverse transcription polymerase chain reaction(qRT-PCR),and western blot.Furthermore,the study explored the role of CAMK2B in glioma cell proliferation,invasion,and migration using cell counting kit-8(CCK-8),5-Ethynyl-2′-deoxyuridine(EdU),wound healing,transwell,and in vivo tumor xenograft assays.Result:Patients with high CAMK2B expression exhibited significantly better prognostic outcomes compared to those with low expression levels.Furthermore,CAMK2B expression was significantly lower in glioma tissues and cells compared to both normal brain tissue and human astrocyte cell lines.Notably,overexpression of CAMK2B in glioma cells led to an approximate 40%reduction in proliferative capacity and a 60–70%decrease in invasive and migratory abilities,compared to control glioma cells.These differences were statistically significant at p<0.05.Conversely,knockdown of CAMK2B using siRNA-CAMK2B significantly enhanced the proliferative,invasive,and migratory capabilities of glioma cells in both in vitro and in vivo settings,enhancing these abilities by 1.5 to 3 times.Notably,these effects were reversed through the application of the Rat Sarcoma viral oncogene homolog(Ras)pathway inhibitor,Salirasib.Western blot analysis revealed that knockdown of CAMK2B led to activation of the Ras/Rapidly Accelerated Fibrosarcoma(Raf)/Mitogen-activated protein kinase kinase(MEK)/Extracellular signal-regulated kinase(ERK)signaling pathway in glioma cell lines,whereas overexpression of CAMK2B resulted in the suppression of this pathway.Conclusion:CAMK2B inhibits glioma proliferation,invasion,andmigration through the Ras/Raf/MEK/ERK signaling pathway.
