Busuishengxue ranules mediate their effects upon non-severe aplastic anemia via mitogen-activated protein kinase/extracellular signal-regulated kinase pathway

OBJECTIVE：To observe the clinical efficacy of Busu- ishengxue granules on non-severe aplastic anemia（NSAA） and investigate its effect on the mitogen-ac- tivated protein kinase/extracellular signal-regulat- ed kinase（MAPK/ERK） pathway. METHODS： Sixty NSAA patients were divided equally into two groups. Subjects in the experimen- tal group were treated with Busuishengxue gran- ules, and the control group with Zaizaoshengxue tablets.The treatment course was 6 months and cu-rative efficacy was compared between the two groups as well as with 10 healthy individuals. Flow cytometry（FCM） was used to detect the intracellu- lar concentration of Ca2 ＋（[Ca2 ＋]i）. Western blotting was employed to detect the expression of enzymes in the MAPK/ERK pathway. RESULTS： The efficacy of Busuishengxue granules was significantly better than that of Zaizaoshengx- ue tablets（P0.05）. Before treatment, expression of JNK, phospho-ERK 1/2 and p-JNK was higher, and [Ca2 ＋]i higher, than that of the control group（P 0.05）. After treatment with Busuishengxue gran- ules, expression of all enzymes related to signal transduction pathways in the blood cells of NSSA patients were altered to different degrees. CONCLUSION： Busuishengxue granules had a bet- ter effect with regard to improving symptom scores, increasing the number of blood leukocytes, and increasing hemoglobin levels than Zaizaosh- engxue tablets, and they differed slightly in terms of increasing the number of platelets.     

沙格列汀干预非酒精性脂肪性肝病合并2型糖尿病大鼠肝组织AMPK/mTOR-TFEB自噬信号通路蛋白表达变化

目的 探讨沙格列汀干预非酒精性脂肪性肝病(NAFLD)合并2型糖尿病(T2DM)大鼠对肝组织腺苷酸活化蛋白激酶(AMPK)/哺乳动物雷帕霉素靶蛋白(mTOR)-转录因子EB(TFEB)自噬信号通路蛋白表达的影响。方法 将42只大鼠随机分为对照组、模型组和沙格列汀干预组,每组14只。采用高脂饲料喂养和链脲佐菌素腹腔注射构建NAFLD合并T2DM模型。在建模成功后,分别给予沙格列汀或生理盐水灌胃8 w。采用放射免疫法检测空腹胰岛素(INS,使用全自动生化分析仪检测空腹血糖(FPG),计算胰岛素抵抗指数(HOMA-IR)。采用Western bloting法检测肝组织p-AMPK、mTOR、TFEB和自噬标记物LC3B-II蛋白表达。结果 沙格列汀处理组大鼠体质量、肝质量和肝脏指数分别为(341.53±5.15)g、(11.06±0.49)g和(3.32±0.25)%,显著低于模型组【分别为(353.27±8.74)g、(12.77±0.84)g和(3.67±0.18)%,P<0.05】;FPG、INS和HOMA-IR水平分别为(9.45±0.71)mmol/L、(7.92±0.34)...     

眼科疾病的生物信息学研究进展

生物信息学是一门对基因组学和蛋白质组学进行研究的新兴学科,是生物学、计算机科学、信息工程和统计学的综合交叉学科。在眼科生物基因研究中,角膜、晶状体、房水、玻璃体和视网膜因富含大量的生物信息,是理想的生物信息学研究对象。基因组学检测技术的高效性和准确性有助于对眼科肿瘤及遗传疾病相关差异表达基因的筛查。蛋白质组学有助于分析眼科疾病状态下眼内液体或细胞中基因表达高低所引起的蛋白表达谱及功能改变,从而揭示疾病的发生机制。本文主要综述生物信息学在眼科疾病的应用,并初步展望其对相关疾病治疗的影响、目前存在的问题及未来的发展趋势。     

敲低着丝粒蛋白U对顺铂耐药卵巢癌细胞自我更新、顺铂耐药和Wnt/β-catenin信号活性的抑制作用

目的:探讨下调着丝粒蛋白U(CENPU)对卵巢癌(OC)细胞顺铂耐药的影响,并分析其作用机制.方法:采用Western blotting法检测OC细胞(OVCAR3和SKOV3细胞)和顺铂耐药OC细胞(OVCAR3/DDP和SKOV3/DDP细胞)中CENPU蛋白表达水平.将OVCAR3/DDP和SKOV3/DDP细胞...     

愈疡胶囊对细菌感染皮炎模型大鼠的抗炎作用及对TLR/NF-κB通路的影响

目的:研究愈疡胶囊对细菌感染皮炎模型大鼠的抗炎作用及对Toll样受体/核因子κB(TLR/NF-κB)通路的影响.方法:采用肉汤稀释法测定愈疡胶囊对金黄色葡萄球菌的最低抑菌浓度(MIC)和最低杀菌浓度(MBC).将50只大鼠随机分为模型组、阳性对照组(阿莫西林克拉维酸钾,以阿莫西林计120 mg/kg)和愈疡胶囊高、中...     

五味沙棘散对卵清蛋白诱导的过敏性支气管哮喘大鼠的保护作用及机制

目的 探究五味沙棘散对卵清蛋白（ovalbumin,OVA）诱导的过敏性哮喘大鼠的保护作用及机制。方法 SD大鼠随机分为对照组、模型组、地塞米松（0.5 mg/kg）组和五味沙棘散（0.5、2.0 g/kg）组,建立OVA诱导的大鼠早期支气管哮喘模型,苏木素-伊红（HE）和Masson染色观察支气管病理情况及纤维化程度;免疫组化检测支气管间隙连接蛋白43（connexin 43,Cx43）的表达和分布;ELISA检测血清中免疫球蛋白E（immunoglobulin E,IgE）和白细胞介素-13（interleukin-13,IL-13）水平;亚甲基蓝法和WSP-1荧光探针法测定血清中硫化氢（hydrogen sulfide,H₂S）水平。建立CdCl₂诱导的支气管上皮BEAS-2B细胞损伤模型,MTT法检测细胞活性;Hoechest 33342染色法观察细胞核形态变化;MitoSOX染色检测细胞线粒体活性氧（mitochondrial reactive oxygen species,mtROS）水平;Western blotting检测半胱氨酸天冬氨酸蛋白酶-3（cystein-asparate protease-3,Caspase-3）、核因子红细胞系2相关因子（nuclear factor erythroid 2-related factor,Nrf2）和Kelch样ECH关联蛋白1（Kelch like ECH associated protein 1,Keap1）蛋白表达。结果 五味沙棘散能够减少支气管黏膜上皮细胞脱落和黏液分泌（P＜0.001）,降低胶原纤维的沉积和Cx43的表达及分布（P＜0.05、0.01、0.001）,降低血清中IgE、IL-13水平（P＜0.05）,升高血清中H₂S水平（P＜0.05、0.01）。五味沙棘散含药血清呈剂量相关性地抑制CdCl₂诱导的BEAS-2B细胞凋亡及mtROS水平（P＜0.01、0.001）,上调Caspase-3和Nrf2蛋白表达（P＜0.05、0.01）,下调Keap1蛋白表达（P＜0.01）。结论 五味沙棘散对OVA诱导的哮喘大鼠和CdCl₂诱导的支气管上皮细胞凋亡均具有保护作用,其机制可能与调控Nrf2/Keap1信号通路有关。     

LINC00941 promoted in vitro progression and glycolysis of laryngocarcinoma by upregulating PKM via activating the PI3K/AKT/mTOR signaling pathway

BackgroundLINC00941 has been proved to be related to various tumors, but its relationship with laryngocarcinoma remains vague.MethodsLINC00941 expression in laryngocarcinoma tumor and laryngocarcinoma cells was determined by real time‐quantitative polymerase chain reaction (RT‐qPCR). Besides, the five‐year survival of laryngocarcinoma patients with different LINC00941 expression was analyzed with Kaplan–Meier survival analysis, and the clinical characteristics of laryngocarcinoma patients were also recorded. After transfection, cell viability, cell proliferation, apoptosis, cell cycle, migration, and invasion were detected by cell counting kit‐8 (CCK‐8), colony formation, flow cytometry, cell scratch, and Transwell assays, respectively. Glycolysis was assessed by the colorimetric method. Expressions of proliferation‐associated proteins, migration‐associated proteins, glycolysis‐associated proteins, and phosphatidylinositol 3‐kinase (PI3K)/AKT/mammalian target of rapamycin (mTOR) signal pathway‐associated proteins were detected by Western blot.ResultsIn laryngocarcinoma tumor tissues and cells, LINC00941 was highly expressed. High expression of LINC00941 decreased the 5‐year survival of laryngocarcinoma patients, and it was positively related to lymph node metastasis and clinical stages. LINC00941 overexpression decreased apoptosis but promoted cell viability, proliferation, cell‐cycle progression, migration, and invasion, and glucose consumption and lactate production in laryngocarcinoma cells. Moreover, LINC00941 overexpression elevated expressions of Ki‐67, PCNA, MMP2, N‐Cadherin, HK2, PFKFB4, and PKM, activated the PI3K/AKT/mTOR signal pathway but reduced E‐Cadherin expression, while LINC00941 silencing had the opposite effects. PKM overexpression reversed the effects of LINC00941 silencing on cellular and glycolytic phenotypes.ConclusionLINC00941 promoted in vitro progression and glycolysis of laryngocarcinoma cells by upregulating PKM via activating the PI3K/AKT/mTOR signaling pathway.     

基因芯片分析Wnt刺激后小鼠多潜能分化干细胞C3H10T1/2的差异基因表达

目的 探讨Wnt信号传导系统对诱导干细胞向神经系统分化的基因表达的影响.方法 采用最新的含有22000多个已知基因及EST克隆的小鼠基因芯片U74Av2,检测了Wnt刺激后的小鼠多潜能分化干细胞C3H10T1/2中目标基因表达的变化,并进行实时定量PCR,验证了基因芯片结果.结果 Wnt刺激后小鼠多潜能分化干细胞C3H10T1/2中Wnt信号传导系统各主要组成基因表达有不同程度增加;对干细胞向神经系统发育有潜在调节作用的基因表达也有增加或减少.结论 表达谱芯片分析成功筛选出wnt刺激引起表达改变且可能与神经发生有关的基因.     

结肠癌患者Wnt信号通路的变化和作用

目的探讨结肠癌患者Wnt信号通路的变化情况及其作用意义。方法利用Human Ge-nome U133Plus2.0基因芯片对结肠正常黏膜组织和癌组织基因表达谱进行检测,分析Wnt信号通路基因表达变化情况。结果Wnt信号通路中FRP、Frizzled、CK2、p53、PP2A、CKIα、JNK、CaMKII、CaN、c-jun、cyc-D等关键基因均呈下调,调控着细胞周期、基因转录等。结论Wnt信号通路可能是调控结肠癌演变过程的重要信号通路之一。     

JNK信号通路通过介导细胞凋亡对肺纤维化的调控作用

目的观察肺纤维化中肺组织caspase-3和磷酸化c-Jun氨基末端激酶(p-JNK)蛋白表达的变化,并探讨JNK信号转导通路对肺纤维化的调控作用。方法 72只健康雄性Wistar大鼠随机分为正常对照组(N组)、肺纤维化模型组(M组),肺纤维化+JNK抑制剂干预组(I组),每组24只,分别于第3、7、14、28天处死,每组6只。留取肺组织,对其行苏木素-伊红(HE)染色,观察其病理学改变,碱水解法测定其中羟脯氨酸的含量,免疫组织化学法测肺组织中caspase-3和p-JNK的变化。结果模型组早期肺泡炎症明显,后期肺组织实变,caspase-3和p-JNK蛋白表达含量均显著增加(P<0.05),14d时达峰值。干预组能明显阻断JNK的激活(P<0.05),干预组caspase-3表达较模型组显著减少(P<0.05),14d时减少最明显。结论细胞凋亡是肺纤维化的一个重要病理组织学特点。JNK信号转导通路在肺纤维化中被激活,发挥促细胞凋亡效应。