目的本研究旨在运用RNA测序和生物信息学等预测姜黄素对三阴性乳腺癌(triple negative breast cancer,TNBC)Hs578T细胞的抗癌机制,并通过体外实验对潜在的分子机制进行验证。方法用姜黄素处理Hs578T细胞后,采用CCK-8法检测姜黄素对细胞...目的本研究旨在运用RNA测序和生物信息学等预测姜黄素对三阴性乳腺癌(triple negative breast cancer,TNBC)Hs578T细胞的抗癌机制,并通过体外实验对潜在的分子机制进行验证。方法用姜黄素处理Hs578T细胞后,采用CCK-8法检测姜黄素对细胞增殖能力的影响,使用流式细胞术检测姜黄素对细胞凋亡和周期的影响,再使用Transwell实验检测姜黄素对细胞运动能力的影响。然后进行转录组测序、构建PPI网络和富集分析对姜黄素的抗癌机制进行预测,最后使用蛋白免疫印迹技术检测姜黄素对Hs578T细胞增殖相关蛋白的影响。结果姜黄素作用于Hs578T细胞24 h后,CCK8检测结果提示姜黄素的IC50约为20μmol/L。使用20μmol/L姜黄素刺激的Hs578T细胞为实验组,未进行姜黄素刺激的细胞为对照组。较对照组,实验组结果显示姜黄素能显著抑制Hs578T细胞的增殖能力,具有时间和浓度依赖性;显著诱导细胞凋亡,阻滞细胞周期于G2/M期;显著抑制细胞的迁移和侵袭能力,相较于对照组差异均具有统计学意义(P<0.05)。PPI网络分析的结果显示差异表达基因表达的蛋白质之间具有相互作用关系。转录组测序和生物信息学分析的结果显示,姜黄素通过参与多条信号通路发挥抗癌作用,如癌症中的信号通路、PI3K-Akt信号通路等。蛋白印迹结果显示姜黄素能在Hs578T细胞中显著抑制m TOR、p-Akt、Akt、p-S6、S6蛋白表达。结论姜黄素可能通过抑制PI3K-Akt信号通路相关蛋白的表达来发挥其抗增殖作用,为临床姜黄素治疗TNBC提供了理论依据和实验基础。展开更多
复发性流产是女性常见的妊娠病之一,对女性的身心健康造成一定的伤害和压力,中医称之为“滑胎”。现有中医理论认为,肾气亏虚,冲任不固,胎失所系,是导致滑胎的主要病机。PI3K-AKT信号通路在细胞增殖、存活和代谢调节中发挥重要作用,最...复发性流产是女性常见的妊娠病之一,对女性的身心健康造成一定的伤害和压力,中医称之为“滑胎”。现有中医理论认为,肾气亏虚,冲任不固,胎失所系,是导致滑胎的主要病机。PI3K-AKT信号通路在细胞增殖、存活和代谢调节中发挥重要作用,最近研究发现,PI3K-AKT信号通路可影响胚胎植入过程各种细胞功能的调节,其异常可最终导致复发性流产。本文通过回顾相关研究文献,就PI3K-AKT信号通路在复发性流产发生的作用机制、补肾中药及中药复方在此通路防治复发性流产的机制展开综述,以期为中医药防治复发性流产的研究提供参考。Recurrent abortion is one of the common pregnancy diseases in women, which causes certain harm and pressure to women’s physical and mental health. It is referred to “habitual abortion” in traditional Chinese medicine. According to the existing theory of traditional Chinese medicine, kidney qi deficiency, Chongren deficiency and fetal displacement are the main causes of fetal slip. The PI3K-AKT signaling pathway plays an important role in the regulation of cell proliferation, survival and metabolism. Recent studies have found that the PI3K-AKT signaling pathway can affect the regulation of various cell functions during embryo implantation, and its abnormality may eventually lead to recurrent abortion. By reviewing relevant research literature, this paper reviewed the mechanism of PI3K-AKT signaling pathway in recurrent abortion, and the mechanism of kidney-tonifying Chinese medicine and Chinese medicine compound in preventing recurrent abortion through this pathway, in order to provide reference for the research on the prevention and treatment of recurrent abortion by traditional Chinese medicine.展开更多
Objective To evaluate the expression pattern of non-SMC condensin II complex subunit D3(NCAPD3)in hepatocellular carcinoma(HCC)tissues,assess its association with clinical characteristics,and explore the effects of NC...Objective To evaluate the expression pattern of non-SMC condensin II complex subunit D3(NCAPD3)in hepatocellular carcinoma(HCC)tissues,assess its association with clinical characteristics,and explore the effects of NCAPD3 on HCC cells and the potential underlying mechanisms.Methods NCAPD3 expression in HCC tumors and adjacent noncancerous tissues was quantified via quantitative PCR.Patients were divided into high-and low-expression groups on the basis of NCAPD3 levels,and associations with clinical parameters were assessed.The effects of NCAPD3 knockdown and the phosphatidylinositol-3-kinase(PI3K)agonist Y-P 740 on cell functions were examined via cell proliferation,Transwell migration,and invasion assays.Differentially expressed genes following NCAPD3 knockdown in SMMC-7721 cells were identified via mRNA sequencing.Western blotting was performed to measure NCAPD3,AKT serine/threonine kinase 1(AKT1),and phosphorylated AKT1 levels.Results NCAPD3 mRNA expression was notably upregulated in HCC tissues as compared with that in adjacent noncancer tissues.A positive correlation was observed between NCAPD3 expression and both lymphatic and distant metastases in patients with HCC.NCAPD3 knockdown reduced the proliferation and metastasis of SMMC-7721 and Huh-7 cells.mRNA sequencing revealed 140 downregulated genes and 125 upregulated genes.Further validation experiments confirmed that NCAPD3 modulated the PI3K-AKT signalling pathway and that the PI3K agonist Y-P 740 counteracted the effects of NCAPD3 knockdown.Conclusions Elevated NCAPD3 expression was strongly correlated with HCC metastasis.NCAPD3 inhibition impedes HCC cell growth and metastatic potential by suppressing the PI3K–AKT signalling pathway.展开更多
Inflammation underlies many chronic diseases,and inflammatory bowel disease(IBD)is a condition characterized by long-term inflammation of the gut.Egg whites have been shown to contain many beneficial active substances...Inflammation underlies many chronic diseases,and inflammatory bowel disease(IBD)is a condition characterized by long-term inflammation of the gut.Egg whites have been shown to contain many beneficial active substances.Therefore,we obtained 2 peptides from salted egg white:Val-Val-His-Phe(VF-4)and Asp-Thr-Gln-Ala-Met-Pro-Phe-Arg(DR-8).The sodium dextran sulfate(DSS)-induced mice colitis model was used to evaluate its regulatory effect on colitis in vivo.The results showed that VF-4 and DR-8 improved the clinical symptoms of DSS-induced colitis,attenuated colon tissue damage,inhibited the activation of nuclear factor kappa-B(NF-κB)/mitogen-activated protein kinase(MAPK)/phosphoinositide 3-kinase-Akt(PI3K-AKT)signaling pathways,and inhibited the expression of inflammatory cytokines.16S rRNA gene sequencing showed that VF-4 and DR-8 administration increased the relative abundance of intestinal beneficial bacteria including Lactobacillus,Blautia,and down-regulated the relative abundance of inflammation-related bacteria including Acinetobacter,Lachnospiraceae_NK4A136_group,Klebsiella.Moreover,the degree of correlation between pro-inflammatory cytokines and microbiota was as follows:interleukin-6(IL-6)>tumor necrosis factor-α(TNF-α)>interleukin-1β(IL-1β)>interferon-γ(IFN-γ).In conclusion,this study suggests that salted egg white peptides VF-4 and DR-8 have a significant antiinflammatory effect in vivo.It also provides a strategy for the treatment of IBD and a new way for the highvalue utilization of salted egg white.展开更多
目的:利用低氧干预分离的小鼠神经干细胞,通过构建腺病毒载体将腺病毒5-丝氨酸-苏氨酸蛋白激酶3(Ad5-AKT3)基因和丝氨酸-苏氨酸蛋白激酶3小干扰RNA(AKT3 si RNA)干扰转染至缺血神经干细胞,探索磷酸肌醇三磷酸激酶-丝氨酸-苏氨酸蛋白激酶...目的:利用低氧干预分离的小鼠神经干细胞,通过构建腺病毒载体将腺病毒5-丝氨酸-苏氨酸蛋白激酶3(Ad5-AKT3)基因和丝氨酸-苏氨酸蛋白激酶3小干扰RNA(AKT3 si RNA)干扰转染至缺血神经干细胞,探索磷酸肌醇三磷酸激酶-丝氨酸-苏氨酸蛋白激酶(PI3K-AKT)通路对缺血性神经干细胞的增殖作用。方法:取新生24h昆明小鼠海马,分离培养原代神经干细胞,并采用巢蛋白(Nestin)免疫荧光检测和5-溴脱氧尿嘧啶核苷(Brdu)渗入实验对其进行鉴定;将所培养的传代神经干细胞随机分组:正常组、缺血模型组、低氧组(低氧+缺血模型组)、Lip2000组(低氧+缺血模型组+Lip2000空转染组)、AKT转染组(低氧+缺血模型组+Ad5-AKT3转染组)、AKT干扰组(低氧+缺血模型组+Lip2000+AKT3 si RNA干扰组)。建立脑缺血损伤的体外模型,低氧干预,构建腺病毒Ad5-AKT3载体和AKT3 si RNA后,各组行MTT检测;RT-q PCR检测AKT3 m RNA表达情况;Werstern Blot检测PI3K、AKT3、PCNA。结果:通过免疫荧光检测Nestin鉴定神经干细胞球,在荧光显微镜下观察到绿色明亮且典型的细胞球,球内可见清晰结构;渗入Brdu免疫荧光检测可见整个着色细胞球。MTT OD值和RT-q PCR检测AKT3 m RNA均显示,与正常组相比,模型组和AKT干扰组下降(P<0.05),其余各组均升高(P<0.05),其中低氧组和Lip2000组之间无明显差异(P>0.05)。与模型组相比,除AKT干扰组下降外(P<0.05),其余各组均升高(P<0.05)。Western Blot检测PI3K、AKT3、PCNA蛋白表达与正常组相比,模型组和AKT干扰组表达量减少(P<0.05),低氧组、Lip2000组和AKT转染组均增加(P<0.05),其中AKT转染组差异最明显(P<0.01)。结论:PI3K-AKT信号通路在低氧干预下有效促进神经干细胞的增殖过程。展开更多
文摘复发性流产是女性常见的妊娠病之一,对女性的身心健康造成一定的伤害和压力,中医称之为“滑胎”。现有中医理论认为,肾气亏虚,冲任不固,胎失所系,是导致滑胎的主要病机。PI3K-AKT信号通路在细胞增殖、存活和代谢调节中发挥重要作用,最近研究发现,PI3K-AKT信号通路可影响胚胎植入过程各种细胞功能的调节,其异常可最终导致复发性流产。本文通过回顾相关研究文献,就PI3K-AKT信号通路在复发性流产发生的作用机制、补肾中药及中药复方在此通路防治复发性流产的机制展开综述,以期为中医药防治复发性流产的研究提供参考。Recurrent abortion is one of the common pregnancy diseases in women, which causes certain harm and pressure to women’s physical and mental health. It is referred to “habitual abortion” in traditional Chinese medicine. According to the existing theory of traditional Chinese medicine, kidney qi deficiency, Chongren deficiency and fetal displacement are the main causes of fetal slip. The PI3K-AKT signaling pathway plays an important role in the regulation of cell proliferation, survival and metabolism. Recent studies have found that the PI3K-AKT signaling pathway can affect the regulation of various cell functions during embryo implantation, and its abnormality may eventually lead to recurrent abortion. By reviewing relevant research literature, this paper reviewed the mechanism of PI3K-AKT signaling pathway in recurrent abortion, and the mechanism of kidney-tonifying Chinese medicine and Chinese medicine compound in preventing recurrent abortion through this pathway, in order to provide reference for the research on the prevention and treatment of recurrent abortion by traditional Chinese medicine.
基金supported by grants from Guangxi Nanning Qingxiu District Key Research and Development Program of Science and Technology Plan(no.2020050)Guangxi Medical and Health Appropriate Technology Development,Promotion and Application Project(no.S2021097)+1 种基金Guangxi Key Research and Development Program(no.AB22080064)Guangxi Natural Science Foundation(no.2017GXNSFAA198126).
文摘Objective To evaluate the expression pattern of non-SMC condensin II complex subunit D3(NCAPD3)in hepatocellular carcinoma(HCC)tissues,assess its association with clinical characteristics,and explore the effects of NCAPD3 on HCC cells and the potential underlying mechanisms.Methods NCAPD3 expression in HCC tumors and adjacent noncancerous tissues was quantified via quantitative PCR.Patients were divided into high-and low-expression groups on the basis of NCAPD3 levels,and associations with clinical parameters were assessed.The effects of NCAPD3 knockdown and the phosphatidylinositol-3-kinase(PI3K)agonist Y-P 740 on cell functions were examined via cell proliferation,Transwell migration,and invasion assays.Differentially expressed genes following NCAPD3 knockdown in SMMC-7721 cells were identified via mRNA sequencing.Western blotting was performed to measure NCAPD3,AKT serine/threonine kinase 1(AKT1),and phosphorylated AKT1 levels.Results NCAPD3 mRNA expression was notably upregulated in HCC tissues as compared with that in adjacent noncancer tissues.A positive correlation was observed between NCAPD3 expression and both lymphatic and distant metastases in patients with HCC.NCAPD3 knockdown reduced the proliferation and metastasis of SMMC-7721 and Huh-7 cells.mRNA sequencing revealed 140 downregulated genes and 125 upregulated genes.Further validation experiments confirmed that NCAPD3 modulated the PI3K-AKT signalling pathway and that the PI3K agonist Y-P 740 counteracted the effects of NCAPD3 knockdown.Conclusions Elevated NCAPD3 expression was strongly correlated with HCC metastasis.NCAPD3 inhibition impedes HCC cell growth and metastatic potential by suppressing the PI3K–AKT signalling pathway.
基金the financial support provided by the Project of Jiangxi Provincial Department of Education,China(GJJ200433)。
文摘Inflammation underlies many chronic diseases,and inflammatory bowel disease(IBD)is a condition characterized by long-term inflammation of the gut.Egg whites have been shown to contain many beneficial active substances.Therefore,we obtained 2 peptides from salted egg white:Val-Val-His-Phe(VF-4)and Asp-Thr-Gln-Ala-Met-Pro-Phe-Arg(DR-8).The sodium dextran sulfate(DSS)-induced mice colitis model was used to evaluate its regulatory effect on colitis in vivo.The results showed that VF-4 and DR-8 improved the clinical symptoms of DSS-induced colitis,attenuated colon tissue damage,inhibited the activation of nuclear factor kappa-B(NF-κB)/mitogen-activated protein kinase(MAPK)/phosphoinositide 3-kinase-Akt(PI3K-AKT)signaling pathways,and inhibited the expression of inflammatory cytokines.16S rRNA gene sequencing showed that VF-4 and DR-8 administration increased the relative abundance of intestinal beneficial bacteria including Lactobacillus,Blautia,and down-regulated the relative abundance of inflammation-related bacteria including Acinetobacter,Lachnospiraceae_NK4A136_group,Klebsiella.Moreover,the degree of correlation between pro-inflammatory cytokines and microbiota was as follows:interleukin-6(IL-6)>tumor necrosis factor-α(TNF-α)>interleukin-1β(IL-1β)>interferon-γ(IFN-γ).In conclusion,this study suggests that salted egg white peptides VF-4 and DR-8 have a significant antiinflammatory effect in vivo.It also provides a strategy for the treatment of IBD and a new way for the highvalue utilization of salted egg white.
文摘目的:利用低氧干预分离的小鼠神经干细胞,通过构建腺病毒载体将腺病毒5-丝氨酸-苏氨酸蛋白激酶3(Ad5-AKT3)基因和丝氨酸-苏氨酸蛋白激酶3小干扰RNA(AKT3 si RNA)干扰转染至缺血神经干细胞,探索磷酸肌醇三磷酸激酶-丝氨酸-苏氨酸蛋白激酶(PI3K-AKT)通路对缺血性神经干细胞的增殖作用。方法:取新生24h昆明小鼠海马,分离培养原代神经干细胞,并采用巢蛋白(Nestin)免疫荧光检测和5-溴脱氧尿嘧啶核苷(Brdu)渗入实验对其进行鉴定;将所培养的传代神经干细胞随机分组:正常组、缺血模型组、低氧组(低氧+缺血模型组)、Lip2000组(低氧+缺血模型组+Lip2000空转染组)、AKT转染组(低氧+缺血模型组+Ad5-AKT3转染组)、AKT干扰组(低氧+缺血模型组+Lip2000+AKT3 si RNA干扰组)。建立脑缺血损伤的体外模型,低氧干预,构建腺病毒Ad5-AKT3载体和AKT3 si RNA后,各组行MTT检测;RT-q PCR检测AKT3 m RNA表达情况;Werstern Blot检测PI3K、AKT3、PCNA。结果:通过免疫荧光检测Nestin鉴定神经干细胞球,在荧光显微镜下观察到绿色明亮且典型的细胞球,球内可见清晰结构;渗入Brdu免疫荧光检测可见整个着色细胞球。MTT OD值和RT-q PCR检测AKT3 m RNA均显示,与正常组相比,模型组和AKT干扰组下降(P<0.05),其余各组均升高(P<0.05),其中低氧组和Lip2000组之间无明显差异(P>0.05)。与模型组相比,除AKT干扰组下降外(P<0.05),其余各组均升高(P<0.05)。Western Blot检测PI3K、AKT3、PCNA蛋白表达与正常组相比,模型组和AKT干扰组表达量减少(P<0.05),低氧组、Lip2000组和AKT转染组均增加(P<0.05),其中AKT转染组差异最明显(P<0.01)。结论:PI3K-AKT信号通路在低氧干预下有效促进神经干细胞的增殖过程。
