化痰通遂汤联合督脉三针对脑卒中后吞咽障碍患者脂质过氧化及血清NPAS4、PARK7的影响

目的探讨化痰通遂汤联合督脉三针对脑卒中后吞咽障碍对患者脂质过氧化及血清NPAS4、PARK7的影响。方法研究将前瞻性选取2020年3月—2022年4月在医院诊疗的86例脑卒中后吞咽障碍患者为受试对象,根据数字表法将其分成试验组与对照组,各43例,对照组予以化痰通遂汤治疗,试验组予以化痰通遂汤治疗的同时采用督脉三针治疗,密切观察并对比两组研究对象的疗效,治疗前后的氧化应激和脂质过氧化指标,血清NPAS4、PARK7水平,NIHSS评分、FMA评分、SSA评分及SIS评分。结果应用化痰通遂汤联合督脉三针治疗后的试验组疗效明显高于单纯应用化痰通遂汤治疗的对照组(P<0.05);治疗后两组患者的SOD、iso-PGs指标较治疗前均上升(P<0.05),且试验组SOD指标高于对照组(P<0.05),但试验组iso-PGs指标较治疗前无明显差异(P>0.05),且试验组低于对照组(P<0.05),MDA指标治疗较治疗前显著下降(P<0.05),且试验组低于对照组(P<0.05);治疗前两组的NIHSS评分、SSA评分、FMA评分及SIS评分均无显著性差异(P>0.05),治疗后试验组患者的FMA评分及SIS评分均显著高于对照组(P<0.05),而NIHSS评分、SSA评分显著低于对照组(P<0.05);治疗前两组血清NPAS4、PARK7水平较治疗前均无显著性差异(P>0.05),且试验组患者血清NPAS4、PARK7水平均显著低于对照组(P<0.05)。结论应用化痰通遂汤联合督脉三针治疗脑卒中后吞咽障碍,效果极佳,联用能够改善氧化应激以及脂质过氧化指标,降低血清NPAS4、PARK7水平,提高患者生存水平,安全可靠,临床应用前景较为宽阔。

2型糖尿病合并冠心病与HE4水平的关系

目的探讨2型糖尿病(type 2 diabetes mellitus,T2DM)合并冠心病(coronary heart disease,CHD)与血清人附睾分泌蛋白4(human epididymis protein-4,HE-4)的相关性。方法选取收治的T2DM患者116例作为观察组,根据是否合并CHD分为单纯T2DM组(n=95)、T2DM合并CHD组(n=21),另选择性别、年龄相匹配的健康人群50例作为对照组,检测入组患者静脉血清中HE4水平,同时检测炎症因子、肝肾功能、血脂、血常规及凝血功能等实验室指标,比较分析各组患者HE4水平变化,及与不同实验室指标的相关性。Logistic回归分析T2DM合并CHD的影响因素。结果与对照组相比,观察组患者HE4[(110.0±70.5)pmol/L vs.(50.5±15.5)pmol/L]显著上升(P<0.001),且T2DM合并CHD组HE4[(178.2±88.0)pmol/L]水平显著高于T2DM组[(94.6±56.2)pmol/L](P=0.003)。Spearman相关性分析显示,HE4与D-二聚体(D-Dimer)、纤维蛋白原(fibrinogen,FBG)、C反应蛋白(C-reaction protein,CRP)、同型半胱氨酸(homocysteine,HCY)呈显著正相关(P<0.05),与白蛋白(albumin,ALB)、前白蛋白(prealbumin,PA)、肾小球滤过率(estimated glomerular filtration rate,eGFR)呈显著负相关(P<0.05)。三种logistic回归模型分析均显示HE4是T2DM合并CHD的独立危险因素。HE4区分T2DM与T2DM合并CHD的受试者工作特征(ROC)曲线下面积分别为0.786(95%CI:0.649~0.924),高于eGFR(0.710,95%CI:0.593~0.827)、CRP(0.720,95%CI:0.604~0.835)、HCY(0.758,95%CI:0.652~0.864)。结论T2DM合并CHD与HE4水平升高有关,为研究T2DM合并CHD提供了新的思路和潜在靶点。

2型糖尿病患者血清人附睾蛋白4与蛋白尿的相关性研究

目的探讨人附睾蛋白4(human epididymis protein 4,HE4)与2型糖尿病(type 2 diabetes mellitus,T2DM)患者蛋白尿的相关性。方法选取2020年1月至2023年7月九江市第一人民医院收治的147例T2DM患者作为观察组,根据蛋白尿严重程度将观察组分为正常白蛋白尿组(101例)、微量白蛋白尿组(25例)、大量白蛋白尿组(21例);同期选取性别、年龄相匹配的50名健康体检者作为对照组。比较分析各组纳入者的HE4和临床指标变化,采用单因素和多因素线性回归分析探讨HE4与蛋白尿的相关性。结果相关性网络图显示HE4是连接血液白蛋白、尿微量白蛋白、尿微量白蛋白/尿肌酐(urinary microalbumin-to-creatinine ratio,UACR)及肾脏功能生物标志物的一个重要节点;与对照组比较,观察组患者的HE4水平显著升高(P<0.01),单因素和多因素线性回归分析均显示HE4与UACR呈正相关;Logistic回归结果显示校正年龄、性别、估算肾小球滤过率(estimated glomerular filtration rate,e GFR)、白蛋白(albumin,ALB)、血尿素氮(blood urea nitrogen,BUN)、血肌酐(serum creatinine,SCr)、尿酸(uricacid,UA)、乳酸脱氢酶(actate dehydrogenase,LDH)等混杂因素后,HE4水平升高是蛋白尿发生的危险因素(OR=1.110,95%CI:1.005~1.226)。结论HE4与UACR呈正相关,其水平升高可增加T2DM患者的蛋白尿发生风险。

白蛋白结合型紫杉醇联合卡铂治疗晚期卵巢癌的疗效及血清HE4、CA125、淋巴细胞亚群检测的临床意义

目的探讨白蛋白结合型紫杉醇联合卡铂治疗晚期卵巢癌的临床疗效及安全性,分析人附睾蛋白4(HE4)、糖类抗原(CA)125、淋巴细胞亚群检测的临床意义。方法回顾性分析2018年12月至2022年12月该院收治的晚期卵巢癌患者临床资料,对照组(29例)采用紫杉醇脂质体联合卡铂治疗,观察组(29例)采用白蛋白结合型紫杉醇联合卡铂治疗,两组均治疗6个疗程。比较两组客观缓解率(ORR)、疾病控制率(DCR)、不良反应及治疗前后血清HE4、CA125、T淋巴细胞亚群的变化。结果观察组ORR为79.31%,高于对照组的51.72%(χ^(2)=4.884,P=0.027)。观察组DCR为93.10%,高于对照组的79.31%(χ^(2)=4.062,P=0.044)。对照组各项不良反应发生率均高于观察组(P<0.05)。重复测量方差分析结果显示,两组HE4及CA125水平存在组间效应、时间效应和交互效应(P<0.001)。单因素重复测量方差分析结果显示,与治疗前比较,两组患者治疗2、4、6个周期后HE4、CA125水平均下降(P<0.008),多变量方差分析结果显示,观察组治疗2、4、6个周期后HE4、CA125水平均低于对照组(P<0.001)。两组治疗前CD3+、CD4^(+)、CD8^(+)T淋巴细胞比例及CD4^(+)T淋巴细胞/CD8^(+)T淋巴细胞比值比较,差异无统计学意义(P>0.05),治疗后两组CD3+、CD4^(+)淋巴细胞比例及CD4^(+)淋巴细胞/CD8^(+)淋巴细胞比值升高(P<0.05),观察组高于对照组(P<0.05),治疗后两组CD8^(+)T淋巴细胞比例下降,观察组低于对照组(P<0.05)。结论白蛋白结合型紫杉醇联合卡铂治疗晚期卵巢癌患者临床疗效更佳,安全性更好,且可明显降低血清HE4、CA125水平,促进淋巴细胞发挥免疫调节作用,改善机体免疫状态。

临床特征联合血清CA19-9、HE4对子宫内膜异位症相关卵巢癌症的诊断价值

目的 探讨临床特征联合血清糖类抗原(CA) 19-9、人附睾蛋白4 (HE4)对子宫内膜异位症相关卵巢癌症(EAOC)的诊断价值。方法 选择2020年1月至2022年12月在河南中医药大学第三附属医院接受手术且经术后病理确诊为EAOC的43例患者作为观察组,按照1∶2的比例抽取同期在我院手术且经术后证实为卵巢子宫内膜异位症(OEM)的86例患者作为对照组。比较两组患者的临床资料及血清CA125、CA19-9和HE4水平,采用多因素Logistic回归分析影响EAOC的独立风险因素,并采用受试者工作特征曲线(ROC)分析临床特征、CA19-9和HE4诊断EAOC的价值。结果 观察组患者的CA19-9和HE4水平分别为[20.99 (17.06,32.40)] U/mL和[64.47 (55.93,72.01)] U/mL,明显高于对照组的[4.98(2.18,10.86)] U/mL和[43.39(34.61,52.40)] U/mL,差异均有统计学意义(P<0.05);观察组患者的CA125水平为[59.85 (39.51,92.26)] pmol/L,明略高于对照组的[56.58 (39.80,80.68)] pmol/L,但差异无统计学意义(P>0.05)。经多因素Logistic回归分析结果显示,CA19-9、HE4、年龄、肿瘤最长径是影响EAOC的风险因素(P<0.05)。经ROC分析结果显示,年龄、肿瘤最长径、CA19-9、HE4联合检测的曲线下面积(AUC)为0.958,明显高于单独检测(年龄:0.857;肿瘤最长径:0.767;CA19-9:0.767;HE4:0.808)(P<0.05)。结论 CA19-9、HE4、年龄、肿瘤最长径可用于预测EAOC,联合检测可提高诊断效能。

中晚期宫颈癌患者血清HE4、TK1、DCLK1水平变化及其与化疗效果的关系

目的 分析中晚期宫颈癌患者血清人附睾蛋白4(HE4)、胸苷激酶1(TK1)、双皮质素样激酶1(DCLK1)变化及其与化疗效果的关系。方法 收集2020年1月至2023年1月于郑州大学第一附属医院接受化疗的215例中晚期宫颈癌患者的病历资料,根据纳入患者的化疗效果将其分为良好组和不良组,其中良好组疗效评估结果为完全缓解(CR)与部分缓解(PR),共173例,不良组疗效评估结果为稳定(SD)与进展(PD),共42例。比较两组血清HE4、TK1、DCLK1水平等临床资料,分析中晚期宫颈癌患者血清HE4、TK1、DCLK1水平与化疗效果的关系。结果 良好组临床分期为Ⅱ期比例、高分化比例、无淋巴结转移比例均高于不良组,肿瘤最大直径以及血清HE4、TK1、DCLK1水平均低于不良组,差异均有统计学意义(P<0.05);经logistic多因素分析显示,肿瘤的临床分期达到Ⅳ期、分化程度为中低分化、淋巴结转移以及血清HE4、TK1、DCLK1水平升高均为影响中晚期宫颈癌患者化疗效果的独立因素(P<0.05);经Spearman相关性分析显示,中晚期宫颈癌患者临床分期、淋巴结转移以及血清HE4、TK1、DCLK1水平与其化疗效果成负相关,分化程度与其化疗效果成正相关(P<0.05)。结论 中晚期宫颈癌患者临床分期越晚、分化程度越差、临床转移以及HE4、TK1、DCLK1水平越高,越不利于患者的化疗,上述指标对其预后均具有一定预测价值。

Usefulness of human epididymis protein 4 in predicting cytoreductive surgical outcomes for advanced ovarian tubal and peritoneal carcinoma

Objective： Human epididymis protein 4（HE4） is a promising biomarker of epithelial ovarian cancer（EOC）. But its role in assessing the primary optimal debulking（OD） of EOC remains unknown. The purpose of this study is to elucidate the ability of preoperative HE4 in predicting the primary cytoreductive outcomes in advanced EOC, tubal or peritoneal carcinoma.Methods： We reviewed the records of 90 patients with advanced ovarian, tubal or peritoneal carcinoma who underwent primary cytoreduction at the Department of Obstetrics and Gynecology of Peking University People＇s Hospital between November 2005 and October 2010. Preoperative serum HE4 and CA125 levels were detected with EIA kit. A receiver operating characteristic（ROC） curve was used to determine the most useful HE4 cut-off value. Logistic regression analysis was performed to identify significant preoperative clinical characteristics to predict optimal primary cytoreduction.Results： OD was achieved in 47.7%（43/48） of patients. The median preoperative HE4 level for patients with OD vs. suboptimal debulking was 423 and 820 pmol/L, respectively（P〈0.001）. The areas under the ROC curve for HE4 and CA125 were 0.716 and 0.599, respectively（P=0.080）. The most useful HE4 cut-off value was 473 pmol/L. Suboptimal cytoreduction was obtained in 66.7%（38/57） of cases with HE4 ≥473 pmol/L compared with only 27.3%（9/33） of cases with HE4 〈473 pmol/L. At this threshold, the sensitivity, specificity, positive predictive value（PPV） and negative predictive value（NPV） for diagnosing suboptimal debulking were 81%, 56%, 67%, and 73%, respectively. Logistic regression analysis showed that the patients with HE4 ≥473 pmol/L were less likely to achieve OD（odds ratio =5.044, P=0.002）.Conclusions： Preoperative serum HE4 may be helpful to predict whether optimal cytoreductive surgery could be obtained or whether extended cytoreduction would be needed by an interdisciplinary team.

糖类抗原125阴性卵巢癌患者血清人附睾蛋白4、癌胚抗原、神经元特异性烯醇化酶表达水平及与患者预后的关系

目的探讨糖类抗原125(CA125)阴性卵巢癌患者血清人附睾蛋白4(HE4)、癌胚抗原(CEA)、神经元特异性烯醇化酶(NSE)表达水平及与患者预后的关系。方法选取107例CA125阴性卵巢癌患者作为观察组,81例良性卵巢肿瘤患者作为对照组。比较两组患者HE4、CEA、NSE表达水平;采用多因素Logistic回归模型分析CA125阴性卵巢癌患者预后的影响因素。结果观察组患者血清HE4、CEA、NSE水平均明显高于对照组,差异均有统计学意义(P﹤0.01)。预后良好与预后不良患者分化程度、临床分期及HE4、CEA、NSE水平比较,差异均有统计学意义(P﹤0.01)。多因素Logistic回归分析结果显示,HE4、CEA、NSE高表达均为CA125阴性卵巢癌患者预后不良的危险因素(P﹤0.05)。结论与良性卵巢肿瘤患者相比,HE4、CEA、NSE在CA125阴性卵巢癌患者中呈高表达,HE4、CEA、NSE表达水平能影响CA125阴性卵巢癌患者的预后,三者水平越低,患者预后越好。

人附睾蛋白4、磷酸酶张力蛋白同源物磷酸酶张力蛋白同源物、Ki-Ki-6767在卵巢癌中的表达及与患者临床特征和预后的关系

目的目的探讨人附睾蛋白4(HE4)、磷酸酶张力蛋白同源物(PTEN)、Ki-67在卵巢癌中的表达及与患者临床特征和预后的关系。方法方法选取83例卵巢癌患者和75例卵巢良性病变患者,分别作为卵巢癌组和卵巢良性病变组,比较两组患者及不同临床特征卵巢癌患者HE4、PTEN、Ki-67阳性表达情况。根据预后情况将卵巢癌患者分为预后良好组和预后不良组,采用Logistic回归模型分析卵巢癌患者预后的影响因素。结果结果卵巢癌组患者HE4、Ki-67阳性表达率均明显高于卵巢良性病变组,PTEN阳性表达率明显低于卵巢良性病变组,差异均有统计学意义(P﹤0.01)。不同分化程度、TNM分期、远处转移情况卵巢癌患者HE4、Ki-67、PTEN阳性表达率比较,差异均有统计学意义(P﹤0.05)。单因素分析结果显示,预后良好组(n=71)和预后不良组(n=12)患者分化程度、TNM分期、远处转移情况及HE4、PTEN、Ki-67表达情况比较,差异均有统计学意义(P﹤0.05)。多因素Logis-tic回归分析结果显示,分化程度、TNM分期、远处转移情况及HE4、PTEN、Ki-67表达情况均是卵巢癌患者预后的影响因素(P﹤0.05)。结论结论HE4、PTEN和Ki-67参与了卵巢癌的发生发展,是卵巢癌患者预后的影响因素。

HNF-4α determines hepatic differentiation of human mesenchymal stem cells from bone marrow

AIM: To investigate the differentiation status and key factors to facilitate hepatic differentiation of human bone-marrow-derived mesenchymal stem cells (MSCs). METHODS: Human MSCs derived from bone marrow were induced into hepatocyte-like cells following a previously published protocol. The differentiation status of the hepatocyte-like cells was compared with various human hepatoma cell lines. Overexpression of hepatocyte nuclear factor (HNF)-4α was mediated by adenovirus infection of these hepatocyte-like cells. The expression of interesting genes was then examined by either re-verse transcription-polymerase chain reaction (RT-PCR) or real-time RT-PCR methods. RESULTS: Our results demonstrated that the differentiation status of hepatocyte-like cells induced from human MSCs was relatively similar to poorly differentiated human hepatoma cell lines. Interestingly, the HNF-4 isoform in induced MSCs and poorly differentiated human hepatoma cell lines was identified as HNF4γ instead of HNF-4α. Overexpression of HNF-4α in induced MSCs significantly enhanced the expression level of hepatic-specific genes, liver-enriched transcription factors, and cytochrome P450 (P450) genes. CONCLUSION: Overexpression of HNF-4α improves the hepatic differentiation of human MSCs from bone marrow and is a simple way of providing better cell sources for clinical applications.

Expression and Immune Effect of Toll-Like Receptor 4 in Human Trophoblast Cells

This study investigated the expression and immune effect of TLR4 in human trophoblast cells. The expression level of TLR4 mRNA in normal and LPS-stimulated human term trophoblast cells （1 mg/L LPS, 12 h） was detected by RT-PCR. In LPS-stimulated human term trophoblast cells of TLR4-blocked group and non-TLR4-blocked group, and normal term trophoblast cells of blank control group, apoptosis rate was measured by flow cytometry （FCM）, and the level of TNF-α determined by using enzyme linked immunosorbent assay （ELISA） respectively. RT-PCR results showed that the expression level of TLR4 mRNA in LPS-stimulated human trophoblast cells was significantly higher than that in normal cells （P〈0.01）. FCM revealed that there was significant difference in apoptosis rate of LPS-stimulated human term trophoblast cells between TLR4-blocked group and non-TLR4-blocked group （P〈0.05）, or between TLR4 antibody-blocked group and blank control group. ELISA indicated that the level of TNF-α in LPS-stimulated human trophoblast cells also had statistical differences between TLR4 antibody-blocked group and non-TLR4 antibody-blocked group （P〈0.05）. Our results suggest that TLR4 plays an important role in the immunological mechanism of apoptosis and secretion of TNF-α of human term trophoblast cells stimulated by LPS.

血清HE4、CA125、TK1水平在卵巢癌患者中的相关性分析

目的探讨人附睾蛋白4(HE4)、糖类抗原125(CA125)和胸苷激酶1(TK1)联合检测在卵巢癌患者中的相关性。方法选择2022年1月—2023年11月本院收治的通过影像及病理活检被明确诊断为卵巢癌的53例患者(卵巢癌组)和良性肿瘤的29例患者(良性对照组)作为研究对象;另选同期健康管理中心接受体检的100名健康妇女作为健康对照组。采用化学发光法检测血清中HE4、CA125和免疫印迹法检测TK1水平,分别比较三组及卵巢癌不同分期血清HE4、CA125、TK1的水平以及ROC曲线对血清HE4、CA125、TK1及联合检测对卵巢癌诊断效能的价值分析。结果卵巢癌患者血清中HE4、CA125、TK1水平均明显高于良性对照组和健康对照组(P<0.05);卵巢癌组中Ⅲ~Ⅳ期患者血清中HE4、CA125、TK1水平均明显高于Ⅰ~Ⅱ期患者(P<0.05),TK1水平在卵巢癌分组中差异无统计学意义(P>0.05);经ROC曲线分析发现,血清中HE4、CA125、TK1联合检测对卵巢癌诊断效能优于三项单独检测。结论卵巢癌患者血清中HE4、CA125、TK1的水平异常表达,且HE4、CA125、TK1三者联合检测的诊断价值效能明显优于单独检测,有助于提高临床对卵巢癌早期筛查的准确率以及协助卵巢癌患者预后的评估,以期提高患者的生存率。

Effects of transferred NK4 gene on proliferation, migration, invasion and apoptosis of human prostate cancer DU145 cells

We investigated the ability of NK4, an antagonist of human hepatocyte growth factor （HGF）, to inhibit the influence of HGF on proliferation, migration, invasion and apoptosis of human prostate cancer cells. Expression vector pBudCE4.1-EGFP-NK4 containing NK4 cDNA was used to transfect human prostate cancer DU145 cells, and the effects of the autocrine NK4 on tumor cell proliferation, migration, invasion and apoptosis were assessed in vitro. in vivo, we subcutaneously implanted DU145 cells, mock-transfected clone （DU145/empty vector） cells and NK4- transfected clone （DU145/NK4） cells into nude mice, and then evaluated tumor growth, cell proliferation and cell apoptosis in vivo. We found that DU145/NK4 cells expressed NK4 protein. In the in vitro study, autocrine NK4 at- tenuated the HGF-induced tumor cell proliferation, migration and invasion, and stimulated apoptosis. Furthermore, autocrine NK4 effectively inhibited the HGF-induced phosphorylation of c-Met, extracellular signal-regulated kinase-1 （ERK1）. and protein kinase B 1/2 （Aktl/2）. Histological examination revealed that autocrine NK4 inhibited prolifera- tion and accelerated apoptosis of prostate cancer cells. These results show that genetic modification of DU145 cells with NK4 cDNA yields a significant effect on their proliferation, migration, invasion and apoptosis. Molecular targeting of HGF/c-Met by NK4 could be applied as a novel therapeutic approach to prostate cancer.

Suppression of human colon tumor growth by adenoviral vector-mediated NK4 expression in an athymic mouse model

AIM： To investigate the suppressive effects of adenoviral vector-mediated expression of NK4, an antagonist of hepatocyte growth factor （HGF）, on human colon cancer in an athymic mouse model to explore the possibility of applying NK4 to cancer gene therapy. METHODS： A human colon tumor model was developed by subcutaneous implantation of tumor tissue formed by LS174T cells grown in athymic mice. Fifteen tumorbearing mice were randomized into three groups （n= 5 in each group） at d 3 after tumor implantation and mice were injected intratumorally with phosphate-buffered saline （PBS） or with recombinant adenovirus expressing 13-galactosidase （Ad-LacZ） or NK4 （rvAdCMV/NK4） at a 6-d interval for total 5 injections in each mouse. Tumor sizes were measured during treatment to draw a tumor growth curve. At d 26 after the first treatment, all animals were sacrificed and the tumors were removed to immunohistochemically examine proliferating cell nuclear antigen （PCNA）, microvessel density （represented by CD31）, and apoptotic cells. In a separate experiment, 15 additional athymic mice were employed to develop a tumor metastasis model by intraperitoneal injection （ip） of LS174T cells. These mice were randomized into 3 groups （n = 5 in each group） at d 1 after injection and were treated by ip injection of PBS, or Ad-LacZ, or rvAdCMV/NK4 at a 6-d interval for total two injections in each mouse. All animals were sacrificed at d 14 and the numbers and weights of disseminated tumors within the abdominal cavity were measured. RESULTS： Growth of significantly suppressed human colon tumors were in the athymic mice treatedwith rvAdCMV/NK4 （2537.4± 892.3 mm^3） compared to those treated by either PBS （5175.2 ± 1228.6 mm^3） or Ad-LacZ （5578.8± 1955.7 mm^3） （P 〈 0.05）. The tumor growth inhibition rate was as high as 51%. Immunohistochemical staining revealed a similar PCNA labeling index （75.1% ± 11.2% in PBS group vs 72.8% ± 7.6% in Ad-LacZ group vs 69.3% ± 9.4% in rvAdCMV/ NK4 group） in all groups, but significantly lower microvessel density （10.7 ± 2.4 in rvAdCMV/NK4 group vs 25.6 ± 3.8 in PBS group or 21.3 ± 3.5 in Ad-LacZ group, P 〈 0.05）, and a markedly higher apoptotic index （7.3% ± 2.4% in rvAdCMV/NK4 group vs 2.6 4, 1.1% in PBS group or 2.1% ± 1.5% in Ad-LacZ group, P 〈 0.05） in the rvAdCMV/NK4 group compared to the two control groups. In the tumor metastasis model, the number and weight of disseminated tumors of mice treated with rvAdCMV/NK4 were much lower than those of the control groups （tumor number： 6.2 ± 3.3 in rvAdCMV/ NK4 group vs 22.9 ± 7.6 in PBS group or 19.8 ± 8.5 in Ad-LacZ group, P 〈 0.05; tumor weight： 324 ± 176 mg in rvAdCMV/NK4 group vs 962 ± 382 mg in PBS group or 1116 ± 484 mg in Ad-LacZ group, P 〈 0.05）. CONCLUSION： The recombinant adenovirus, rvAdCMV/ NK4, can attenuate the growth of colon cancer in vivo, probably by suppressing angiogenesis and inducing tumor cell apoptosis, but not by direct suppression of tumor cell proliferation. Moreover, rvAdCMV/NK4 may inhibit peritoneal dissemination of colon cancer cells in a murine tumor metastasis model. These findings indicate that NK4 gene transfer may be an effective tool for the treatment of colon cancer.

Super-resolution immunohistochemistry study on CD4 and CD8 cells and the relation to macrophages in human cochlea

Recently, the human cochlea has been shown to contain numerous resident macrophages under steady-state. The macrophages accumulate in the stria vascularis, among the auditory nerves, and are also spotted in the human organ of Corti. These macrophages may process antigens reaching the cochlea by invasion of pathogens and insertion of CI electrode. Thus, macrophages execute an innate, and possibly an adaptive immunity. Here, we describe the molecular markers CD4 and CD8 of T cells, macrophage markers MHCⅡ and CD11b, as well as the microglial markers TEME119 and P2Y12, in the human cochlea. Immunohistochemistry and the advantageous super-resolution structured illumination microscopy(SR-SIM) were used in the study. CD4^+ and CD8^+ cells were found in the human cochleae. They were seen in the modiolus in a substantial number adjacent to the vessels, in the peripheral region of the Rosenthal's canal, and occasionally in the spiral ligament. While there are a surprisingly large number of macrophages in the stria vascularis as well as between the auditory neurons,CD4^+ and CD8^+ cells are hardly seen in these areas, and neither are seen in the organ of Corti. In the modiolus,macrophages, CD4^+ and CD8^+ cells appeared often in clusters. Interaction between these different cells was easily observed with SR-SIM, showing closely placed cell bodies, and the processes from macrophages reaching out and touching the lymphocytes. Otherwise the CD4^+ and CD8^+ cells in human cochlear tissue are discretely scattered. The possible roles of these immune cells are speculated.

Effects of adenoviral-mediated gene transduction of NK4 on proliferation, movement, and invasion of human colonic LS174T cancer cells in vitro

AIM： To investigate the inhibitory effects of a recombinant adenovirus vector that expresses NK4, a truncated form of human hepatocyte growth factor （HGF）, on human colonic adenocarcinoma cells in vitro to establish a basis for future NK4 gene cancer therapy. METHODS： Cells from the LS174T human colonic adenocarcinoma cell line were infected with recombinant adenovirus rvAdCMV/NK4 and the effects of the manipulation on tumor cell proliferation, scatter, migration, and basement membrane invasion were assessed. Cells infected with a recombinant adenovirus vector （Ad-LacZ） expressing β-galactosidase served as the controls. RESULTS： We found that rvAdCMV/NK4 expression attenuated HGF-induced tumor cell scatter, migration, and basement membrane invasion （P 〈 0.05）, but did not inhibit tumor cell proliferation. CONCLUSION： HGF-induced LS174T tumor cell scatter, migration, and invasion can be antagonized by the recombinant NK4-expressing adenovirus.

Expression of serum human epididymal secretory protein E4 at low grade and high grade serous carcinomas

Objective:To investigate the value of serum human epididymis protein 4(HE4) in differential diagnosis of patients with low-grade serous(LGSC) and high-grade serous carcinoma(HGSC) serous ovarian cancer.Methods:LGSC and HGSC serous ovarian cancer were diagnosed by the two-tier grade system,serum levels of HE4 and carbohydrate antigen 12S(CA125) were measured by ELBA and radioisotope method,respectively in 60 serous ovarian cancer patients. HE4 and TPS3 protein in cancer tissue were measured by immunohistochemical method. Results:The difference in density of HE4 and TP53 protein was significant between LGSC and HGSC tissue,while serum CA12S did not show significant difference between different serum samples.There was significant difference in serum HE4 levels between LGSC and HGSC and the result was different within FIGO(Ⅰ+Ⅱ) stage,suggesting HE4 was not a reliable biomarker for the discrimination between LGSC and HCSC.HE4 had potential as a biomarker for the discrimination between LGSC and HGSC but the role in early diagnosis was limited.Conclusions:HE4 may be a reliable marker for differential diagnosis of LGSC and HGSC.But its role in early diagnosis of LGSC and HGSC need to be confirmed from the perspective of two-tier grade system.

4-HNE Induces Apoptosis of Human Retinal Pigment Epithelial Cells by Modifying HSP70

The role of heat shock protein 70 (HSP70) in apoptosis of human retinal pigment epithelial cells (ARPE-19) induced by 4-hydroxy-2-nonenal (4-HNE) was explored. Different concentrations of 4-HNE were used to stimulate ARPE-19 cells, and apoptosis was measured by flow cytometry. The expression of apoptotic-related proteins, HSP70, X-linked inhibitorof- apoptosis (XIAP), Bcl-2, and Bax were quantified by Western blotting. HSP70 and XIAP overexpression plasmids, or their corresponding siRNAs were transfected into ARPE-19 cells using Lipofectamine. 2000. Co-immunoprecipitation and Western blotting were used to detect the effect of 4-HNE on the expression of HSP70 and the binding level between 4-HNE and HSP70. The results showed that 4-HNE induced late apoptosis in ARPE-19 cells, accompanied by elevated levels of 4-HNE-modified IISP70, but it did not affect HSP70 protein expression. 4-HNE-modified HSP70 down-regulated the expression of the apoptosis inhibitory protein XIAP. Overexpression of HSP70 or XIAP inhibited 4-HNE-induced apoptosis of ARPE-19 cells. It was suggested that 4-HNE could promote XIAP degradation by modification of HSP70 to induce late apoptosis of human retinal pigment epithelial cells.

AFF1 and AFF4 differentially regulate the osteogenic differentiation of human MSCs

AFF1 and AFF4 belong to the AFF （AF4/FMR2） family of proteins, which function as scaffolding proteins linking two different transcription elongation factors, positive elongation factor b （P-TEFb） and ELL1/2, in super elongation complexes （SECs）. Both AFF1 and AFF4 regulate gene transcription through elongation and chromatln remodeling. However, their function in the osteogenic differentiation of mesenchymal stem cells （MSCs） is unknown. In this study, we show that small interfering RNA （siRNA）-mediated depletion of AFF1 in human MSCs leads to increased alkaline phosphatase （ALP） activity, enhanced mineralization and upregulated expression of osteogenic-related genes. On the contrary, depletion of AFF4 significantly inhibits the osteogenic potential of MSCs. In addition, we confirm that overexpression of AFF1 and AFF4 differentially affects osteogenic differentiation in vitro and MSC-mediated bone formation in vivo. Mechanistically, we find that AFFI regulates the expression of DKK1 via binding to its promoter region. Depletion of DKK1 in HA-AFFl-overexpressing MSCs abrogates the impairment of osteogenic differentiation. Moreover, we detect that AFF4 is enriched in the promoter region of ID1. AFF4 knockdown blunts the BRE luciferase activity, SP7 expression and ALP activity induced by BMP2 treatment. In conclusion, our data indicate that AFF1 and AFF4 differentially regulate the osteogenic differentiation of human MSCs.AFF1 and AFF4 belong to the AFF （AF4/FMR2） family of proteins, which function as scaffolding proteins linking two different transcription elongation factors, positive elongation factor b （P-TEFb） and ELL1/2, in super elongation complexes （SECs）. Both AFFI and AFF4 regulate gene transcription through elongation and chromatln remodeling. However, their function in the osteogenic differentiation of mesenchymal stem cells （MSCs） is unknown. In this study, we show that small interfering RNA （siRNA）-mediated depletion of AFF1 in human MSCs leads to increased alkaline phosphatase （ALP） activity, enhanced mineralization and upregulated expression of osteogenic-related genes. On the contrary, depletion of AFF4 significantly inhibits the osteogenic potential of MSCs. In addition, we confirm that overexpression of AFF1 and AFF4 differentially affects osteogenic differentiation in vitro and MSC-mediated bone formation in vivo. Mechanistically, we find that AFFI regulates the expression of DKK1 via binding to its promoter region. Depletion of DKK1 in HA-AFFl-overexpressing MSCs abrogates the impairment of osteogenic differentiation. Moreover, we detect that AFF4 is enriched in the promoter region of ID1. AFF4 knockdown blunts the BRE luciferase activity, SP7 expression and ALP activity induced by BMP2 treatment. In conclusion, our data indicate that AFF1 and AFF4 differentially regulate the osteogenic differentiation of human MSCs.

Molecular Mechanism of Induction on Apoptosis of Human Esophageal Cancer HCE-4 Cells by Active Components from Astragalus membranaceus

[Objectives] To investigate the pharmacologic effects of active components from A. membranaceus on human esophageal cancer HCE-4 cells and its apoptosis mechanism. [Methods] The viabilities of HCE-4 cells were measured by MTT assay. The induction of active components from A. membranaceus on apoptosis of HCE-4 cells was detected by Annexin V-FITC/PI double staining. The apoptotic-related protein expression levels were determined by Western blotting. [Results] Formononetin and astragaloside IV suppressed the proliferation of HCE-4 cells in a dose-dependent manner. The Annexin V-FITC/PI double staining results showed that formononetin and astragaloside IV could induce HCE-4 cells apoptosis in a time-dependent manner. The Western blotting results showed that formononetin and astragaloside IV could significantly down-regulate p-AKT,pro-caspase-3,and increase cle-caspase-3 protein expression in HCE-4 cells. [Conclusions]Active components from A. membranaceus such as formononetin and astragaloside IV significantly inhibited the proliferation of human esophageal cancer HCE-4 cells by inducing mitochondrial dependent apoptosis via AKT signaling pathway.