胃癌中SDF-1、CXCR4、MMP-2和MMP-9的表达及意义

目的研究趋化因子SDF-1及其受体CXCR4以及MMP-2和MMP-9在胃癌中的表达,探讨SDF-1对MMP-2和MMP-9表达的影响。方法应用免疫组化EnVision两步法检测109例胃癌组织中SDF-1、CXCR4、MMP-2和MMP-9的表达。结果 (1)SDF-1、CXCR4、MMP-2、MMP-9在胃癌组的表达阳性率分别为88.1%、56.9%、80.7%和83.4%,高于切缘对照组的47.8%、30.4%、43.4%和47.8%,差异有显著性(P<0.05);(2)SDF-1和CXCR4的表达在淋巴结转移组高于无转移组(P<0.05),SDF-1、MMP-9表达程度与淋巴结转移、组织学分级、浆膜侵犯、临床分期指标呈正相关(P<0.05);MMP-2、CXCR4表达程度与淋巴结转移、浆膜侵犯、临床分期呈正相关(P<0.05);(3)SDF-1与其受体CXCR4的表达及与MMP-2、MMP-9均呈正相关(P<0.05)。结论 (1)SDF-1、CXCR4、MMP-2和MMP-9的表达水平与胃癌的发生、侵袭及淋巴结转移密切相关,可作为预测胃癌淋巴结转移及预后的指标;(2)SDF-1/CXCR4轴可通过加强肿瘤细胞MMP-2和MMP-9分泌的途径促进肿瘤的浸润和转移,提示SDF-1可能是药物靶向治疗的重要靶点。     

颅内出血新生患儿血浆MMP-2、MMP-9的变化研究

目的 临床分析颅内出血新生患儿血浆MMP-2、MMP-9的变化研究.方法 选取我院2012年8月～2014年8月收治的50例颅内出血新生儿患儿和15例健康新生儿,选择ELISA法,对其血浆MMP-9和MMP-2含量进行测定.结果 经过分析后得知,颅内出血新生儿的MMP-9和MMP-2含量明显上升,且明显高于对照组(P＜0.05).针对不同出血量组,其MMP-9和MMP-2含量存在显著性差异(P＜0 05).结论 针对新生儿颅内出血,其MMP-9和MMP-2含量与神经功能缺损相关,能够作为评估预后、病情判断的重要指标,对于颅内出血并发神经损伤诊断与研究,具有临床研究价值.     

基质金属蛋白酶MMP-2、MMP-9及其抑制因子TIMP-1、TIMP-2在子宫内膜异位症血清中的表达及临床意义

目的探讨基质金属蛋白酶MMP-2、MMP-9及其抑制因子TIMP-1、TIMP-2在子宫内膜异位症（EMs）血清中的表达及临床意义。方法采用双抗体夹心酶联免疫吸附法（ELISA）检测55例EMs患者和30例对照组血清中删P-2,MMP-9、TIMP-1和TIMP-2水平。结果BMs组血清中MMP-2和MMP-9水平显著高于对照组,TIMP-1和TIMP-2水平显著低于时照组（P〈0．05）。Ⅲ-Ⅳ期血清MMP-2和MMP-9水平显著高于Ⅰ-Ⅱ期和对照组,TIMP-1和TIMP-2水平显著低于Ⅰ-Ⅱ期和对照组（P〈0．05）。结论MMP-2、MMP-9与Elds发生和发展相关,TIMP-1、TIMP-2对MMP-2、MMP-9水平调节有重要作用。     

跨区皮瓣切取后choke血管管径的定量分析及MMP-2与MMP-9的表达

目的　探讨MMP-2与MMP-9在Choke血管演变过程中的表达情况。 方法　SD 大鼠40 只,体重(310±10)g。在大鼠背部一侧切取髂腰动脉穿支为蒂,宽3 cm,长10 cm的皮瓣。术后将皮瓣分如5个时间点,在每个时间点切取髂腰动脉与肋间后动脉穿支之间的Choke区组织,利用Western blot、明胶酶谱法及免疫组化对MMP-2与MMP-9的表达情况进行分析。利用皮窗技术对Choke血管管径的变化进行定量分析。 结果　 Western blot结果检测表明皮瓣术后MMP-2、MMP-9的表达量均有所增高,MMP-9以术后1 d增高最为显著;明胶酶谱结果显示,术后MMP-9的活性明显增高,以术后1 d增高最为显著,而MMP-2的活性没有显著差异。MMP-2免疫阳性细胞主要表达在血管内皮,MMP-9主要表达在血管腔内及血管内皮。PGP9.5免疫组织化学显色,皮瓣切取后3d皮瓣内的轴突已经完全退变。 结论　通过对皮瓣内血管演变过程进行定量分析,在形态学上验证了跨区皮瓣术后前3 d静脉血“迷宫式回流”,之后主要通过轴型静脉进行回流的假说。在跨区皮瓣术后血管的形态学演变中MMP-9可能扮演比MMP-2更重要的角色。     

ADAM15、MMP-2和MMP-9在不同转移能力乳腺癌细胞系中的表达差异

目的分析ADAM15、MMP-2和MMP-9在不同转移能力乳腺癌细胞系中的表达,探讨其与乳腺癌细胞转移的相关性。方法 Transwell小室实验检测两种乳腺癌细胞系的转移能力,免疫细胞化学法对ADAM15、MMP-2及MMP-9在两种细胞中的表达进行定性、定位及半定量检测,Western blot对其进行定量检测。结果 MDA-MB-231乳腺癌细胞系的运动和侵袭能力均强于MCF-7乳腺癌细胞系。ADAM15、MMP-2及MMP-9在MDA-MB-231细胞系中的表达分别高于MCF-7细胞系(免疫细胞化学:P0.001,P0.05,P0.001;Western blot:P0.01,P0.05,P0.01),且三者在两系乳腺癌细胞表达的差异中,ADAM15表达的差异性最大,其次为MMP-9,MMP-2的差异性最小。结论 ADAM15、MMP-2及MMP-9均促进乳腺癌转移,且ADAM15与转移相关性最强而可能成为判断乳腺癌恶性生物学行为的指标。     

非小细胞肺癌中MMP-9和MMP-13的表达及意义

目的：分析MMP-9和MMP-13在非小细胞肺癌( non-small cell lung cancer, NSCLC)中的表达及相关性,探讨二者与NSCLC临床病理特征及预后的关系。方法采用免疫组化SP法检测88例NSCLC和18例癌旁正常肺组织中MMP-9、MMP-13的表达。结果 MMP-9与MMP-13在NSCLC中的阳性率均高于癌旁正常肺组织( P<0．05)。 MMP-9表达与患者年龄、分化程度、淋巴结转移有关(P<0．05);MMP-13表达与分化程度、淋巴结转移有关(P<0．05)。 NSCLC中MMP-9与MMP-13的表达呈正相关(P<0．05)。 MMP-9和MMP-13阳性组的生存率均低于阴性组,差异有显著性(P<0．05);且肿瘤大小、淋巴结转移和MMP-13阳性表达与NSCLC的预后密切相关( P<0．05)。结论 MMP-9与MMP-13均与NSCLC的侵袭、转移及预后密切相关,MMP-13可能主要通过激活MMP-9途径来参与NSCLC的侵袭、转移。     

乳腺癌中PKCζ、MMP-2、MMP-9的表达及相关性

目的：探讨乳腺癌中蛋白激酶C灼(protein kinase C灼, PKC灼)、基质金属蛋白酶-2( matrix metalloproteinase-2, MMP-2)、基质金属蛋白酶-9(matrix metalloproteinase-9, MMP-9)的表达及三者与其侵袭、转移的关系。方法应用免疫组化PV 9000两步法检测PKC灼、MMP-2、MMP-9在100例乳腺癌组织及对应癌旁正常乳腺组织中的表达,并分析三者表达的相关性。应用RNAi技术将合成的PKC灼-siRNA转染入乳腺癌细胞株MDA-MB-231中,即siPKC灼/MDA-MB-231细胞组,以转染空载质粒的scr/MDA-MB-231的细胞组作为对照组,应用Transwell侵袭实验检测细胞的体外侵袭能力。利用Western blot法检测转染细胞中PKC灼蛋白的表达。酶联免疫吸附实验( enzyme-linked immunosorbent assay, ELISA)检测培养基中MMP-2、MMP-9的含量。结果 PKC灼、MMP-2、MMP-9在乳腺浸润性导管癌中的阳性率分别为62.5%、37.5%、32.5%,明显高于乳腺导管内癌和癌旁正常乳腺组织(P均<0.05)。 PKC灼蛋白表达与淋巴结转移、远处转移有关(P均<0.01),与患者年龄、肿瘤大小、临床分期、ER、PR等无关( P均>0.05);转染 siRNA的 siPKC灼/MDA-MB-231细胞组与 scr/MDA-MB-231组相比,体外侵袭能力以及PKC灼蛋白的表达水平明显下降(P均<0.05),培养基中MMP-2、MMP-9蛋白表达量亦明显下降(P均<0.05)。结论 PKC灼通过影响乳腺癌细胞中MMP-2、MMP-9的分泌来促进乳腺癌的侵袭、转移。     

扶正解毒通络方对人肝癌HepG2 细胞MMP-2、MMP-9 表达及细胞侵袭作用的影响

目的:探讨扶正解毒通络方对肝癌HepG2 细胞侵袭作用和基质金属蛋白酶(Matrix metallo proteinases,MMP)-2、MMP鄄9 表达水平的影响及可能的作用机制。方法: CCK8 实验检测扶正解毒通络方对HepG2 细胞活性影响;Transwell 侵袭实验检测扶正解毒通络方对HepG2 侵袭能力的影响;ELISA 法检测扶正解毒通络方干预HepG2 细胞后MMP-2和MMP-9 的表达水平。结果:CCK8 实验结果显示,扶正解毒通络方对HepG2 细胞意志呈剂量时间相关性。Transwell 侵袭实验显示,2.65 mg/ ml 扶正解毒通络方对HepG2 细胞侵袭力抑制率为52.45% (P<0.05)。ELISA 检测结果显示,扶正解毒通络方干预后HepG2 细胞上清液中MMP-2 和MMP-9 表达水平下降(P<0.05)。结论:扶正解毒通络方可以抑制肝癌HepG2 细胞的生长和侵袭,其机制可能是通过下调MMP-2、MMP-9 在肝癌细胞HepG2 的表达。     

IgG在人脑胶质瘤中的表达及其与OPN、MMP-2、MMP-9、P16的关系

目的检测IgG在人脑胶质瘤中的表达及其与OPN、MMP-2、MMP-9、P16表达的关系。方法免疫组化检测IgG、OPN、MMP-2、MMP-9、P16在80例胶质瘤组织中的表达,原位杂交和RT—PCR检测IgG mRNA在组织和胶质瘤细胞系U373细胞中的表达。结果胶质瘤组织和U373细胞系细胞中有IgG蛋白及IgG mRNA表达,IgG、OPN、MMP-2、MMP-9和P16的表达阳性率在不同级别胶质瘤组均有显著性差异,IgG与OPN、MMP-2、MMP-9的表达呈正相关,与P16表达呈负相关。结论胶质瘤中IgG、OPN、MMP-2、MMP-9高表达,P16低表达,可能在胶质瘤的发生发展中起一定作用。     

原发性高血压肾病患者血清MMP-2、MMP-9和血浆ET-1检测的临床意义

本文对原发性高血压患者血清基质金属蛋白酶-2（MMP-2）、基质金属蛋白酶-9（MMP-9）和血浆内皮素-1（ET-1）水平进行测定，现将结果报告如下。     

Expression of MMP-10, MMP-21, MMP-26, and MMP-28 in Merkel cell carcinoma

Merkel cell carcinoma (MCC) is an aggressive cutaneous tumor with poor outcome and increasing incidence. We examined by immunohistochemistry the expression of three novel matrix metalloproteinases (MMPs)—MMP-21, MMP-26, and MMP-28—in 44 primary MCC tumors and six lymph node metastases while MMP-10 served as a positive control. Their mRNA expression was also studied in the UISO MCC cell line basally and after various stimulations using quantitative real-time PCR. MMP-28 was observed in tumor cells of 15/44 samples especially in tumors <2 cm in diameter (p = 0.015) while 21/44 specimens showed MMP-28 in the tumor stroma. Expression of MMP-21 was demonstrated in tumor cells of 13/43 samples. MMP-26, instead, was positive in stromal cells (17/44) and its expression associated with tumors ≥2 cm in diameter (p = 0.006). Stromal expression of MMP-10 was the most frequent finding of the studied samples (31/44), but MMP-10 was detected also in tumor cells (17/44). Most of the metastatic lymph nodes expressed MMP-10 and MMP-26. MMP-10, MMP-21, and MMP-28 mRNAs were basally expressed by the UISO cells, and the corresponding proteins were detectable by immunostaining of cultured cells. IFN-α and TNF-α downregulated MMP-21 and MMP-28 expression. Our results suggest that novel MMPs may have a role in MCC pathogenesis: especially that MMP-26 expression in stroma is associated with larger tumors with poor prognosis. Expression of MMP-21 and MMP-28 seems to associate with the tumors of lesser malignant potential. We also confirm the previous finding on the role of MMP-10 in MCC pathogenesis.     

子宫内膜异位症组织中MMP-2和MMP-9基因表达的意义

目的：探讨MMP-2和MMP-9在子宫内膜异位症发生中的作用。方法：采用免疫组织化学SP法研究25例子宫内膜异位症和22例正常子宫内膜组织中MMP-2及MMP-9的蛋白表达情况；采用RT-PCR法研究33例子宫内膜异位症的异位子宫内膜组织和30例正常子宫内膜组织中MMP-2和MMP-9基因的mRNA表达情况。结果：子宫内膜异位症组中的MMP-2和MMP-9的蛋白表达及mRNA表达均明显高于各自的正常子宫内膜对照组（P<0.05）。结论：MMP-2和MMP-9在子宫内膜异位症的发病过程中可能起重要的作用。     

Immunolocalization of MMP-2 and MMP-9 in human rheumatoid synovium

Matrix metalloproteinase (MMP)-2 and MMP-9, two important members of the matrix metalloproteinase family, have been shown critical contributions in intra-tumor angiogenesis and invasion of tumor progression, and they might also play important roles in the angiogenesis as well as the pannus formation of rheumatoid arthritis (RA). In the present study, we used the immunohistochemistry, the immunofluorescence staining and the con-focal scanning methods to characterize the immunolocalization of MMP-2 and MMP-9 in RA synovium tissues. Our results showed that both MMP-2 and MMP-9 immunostaining could be found in synoviocytes and vascular endothelial cells. Moreover, our con-focal scanning also showed that MMP-2 could be found in infiltrating CD14⁺ monocytes and CD68⁺ macrophages, and MMP-9 could be found in infiltrating CD68⁺ macrophages in RA synovium tissues, while weak or negative staining of these two MMPs could be found in infiltrating CD20⁺B cells and CD3⁺T cells in RA synovium. Thus, our finding suggests that both MMP-2 and MMP-9 expressed by synoviocytes as well as certain infiltrating immune cells role importantly in the angiogenesis in RA progression.     

MMP-2 activation and stepwise progression of pulmonary adenocarcinoma: analysis of MMP-2 and MMP-9 with gelatin zymography

Small pulmonary adenocarcinomas can be classified on the basis of their histological characteristics and prognosis, and when classified as such, the prognosis of replacing-type adenocarcinoma with active fibroblast proliferation is significantly worse than adenocarcinoma without fibroblast proliferation. In order to clarify the biological mechanisms of the key to the morphological changes associated with active fibroblast proliferation, we examined the activities of matrix metalloproteinase (MMP)-2 and MMP-9, which are important enzymes in the stromal invasion by cancers. The active MMP-2 and MMP-9 content of 40 pulmonary adenocarcinomas that were less than 20 mm in diameter was measured by the gelatin zymography method. The quantity of active MMP-2 in the pulmonary adenocarcinomas with active fibroblast proliferation was higher than in the pulmonary adenocarcinomas without proliferation (P < 0.001), but there were no correlations between the histological features and the activation of MMP-9. The presence of active fibroblast proliferation in small pulmonary adenocarcinomas suggests that the cancer cells have acquired the ability to invade through the action of active MMP-2, and this is thought to be one of the reasons for the worse prognosis of pulmonary adenocarcinoma with active fibroblast proliferation.     

Activity of MMP-2 and MMP-9 in sera of breast cancer patients

Gelatinase A (MMP-2) and gelatinase B (MMP-9) are proteolytic enzymes involved in the process of tumor invasion, and they are considered as possible tumor markers in breast cancer patients. In this study, we examined serum activity of proMMP-2 and proMMP-9 in relation to TNM stage, tumor size, lymph node involvement, grade of differentiation of tumors, as well as steroid and Her2/neu receptor status in breast cancer patients. The activity of gelatinase in the sera of 52 patients was analyzed by SDS-PAGE zymography. The activity of proMMP-2 and proMMP-9 significantly increased with each advancing clinical stage of disease (p=0.02–0.0009) and compared to controls (p=0.015 to p<0.01). We found a positive correlation between the activity of proMMP-2 and proMMP-9 and tumor size (p=0.007; p=0.05). Patients with lymph node-positive cancer have higher proMMP-2 and proMMP-9 activity than those with node-negative cancer. ProMMP-2 and proMMP-9 activity is not associated with the expression of Her2/neu receptors, but patients with Her2/neu overexpression (3+) showed increased proMMP-2 activity. Steroid receptor score is not associated with enhanced gelatinase activity. The relationship between the increase in proMMP-2 and proMMP-9 activity in serum and tumor size and lymph node status suggests the usefulness of these enzymes as staging markers of breast cancer patients.     

MMP-2、MMP-9及EMMPRIN在子宫内膜异位症中的表达及临床意义

目的研究基质金属蛋白酶2（MMP-2）、基质金属蛋白酶9（MMP-9）、细胞外基质金属蛋白酶诱导因子（EMMPRIN）在子宫内膜异位症（EMs）的表达和意义。方法应用免疫组化二步法检测EMs患者异位内膜42例、在位内膜42例及正常内膜20例中的MMP-2、MMP-9、EMMPRIN的表达情况,并对它们的EMMPRIN、MMP-2、MMP-9蛋白表达水平进行相关性分析。结果 MMP-2、MMP-9、EMMPRIN在异位内膜组中阳性表达率分别为95.24%、92.86%和90.48%,显著高于在位内膜组、正常内膜组（P〈0.05）;而在位内膜组和正常内膜组差异无统计学意义（P〉0.05）。异位内膜组中,EMMPRIN分别和MMP-2,MMP-9呈正相关性（P〈0.01）。结论 MMP-2、MMP-9、EMMPRIN共同参与了子宫内膜异位症的发生发展;EMMPRIN可能通过促进MMP-2和MMP-9的合成与分泌发挥其作用。     

AcSDKP对大鼠心成纤维细胞MMP-2、MMP-9活性和MMP-1表达的影响

目的探讨N-乙酰基-丝氨酰-天门冬酰-赖氨酰-脯氨酸(AcSDKP)对10%血清和血小板源性生长因子(PDGF)诱导的大鼠心成纤维细胞MMP-2、MMP-9活性和MMP-1表达的调节作用。方法明胶酶谱法检测心成纤维细胞MMP-2、MMP-9的活性。Western blot法检测心成纤维细胞MMP-1的表达。结果10%血清和PDGF使心成纤维细胞MMP-2、MMP-9活性增强,也促进MMP-1的表达;AcSDKP能够进一步增加由10%血清和PDGF诱导的心成纤维细胞MMP-2、MMP-9的活性,并促进MMP-1的表达。结论AcSDKP上调了由PDGF介导的心成纤维细胞MMPs活性或表达,这可能与AcSDKP抗心肌纤维化的作用相关。     

Expression of matrix metalloproteinases MMP-1, MMP-11 and MMP-19 is correlated with the WHO-grading of human malignant gliomas

Glioblastomas (GBM) are the most prevalent type of malignant primary brain tumor in adults. They may manifest de novo or develop from low-grade astrocytomas (LGA) or anaplastic astrocytomas. They are characterized by an aggressive local growth pattern and a marked degree of invasiveness, resulting in poor prognosis. Tumor progression is facilitated by an increased activity of proteolytic enzymes such as matrix metalloproteinases (MMPs). Elevated levels of several MMPs were found in glioblastomas compared to LGA and normal brain (NB). However, data for some MMPs, like MMP-1, are controversially discussed and other MMPs like MMP-11 and MMP-19 have as yet not been analysed in detail. We examined the expression of MMP-1, MMP-9, MMP-11 and MMP-19 in NB, LGA and GBM by semiquantitative RT-PCR, Western blotting and immunohistochemistry and found an enhanced expression of these MMPs in GBM compared to LGA or NB in signal strength and in the percentage of tumors displaying MMP expression. The transition from LGA to GBM was characterized by a shift of pro-MMP-11 to expression of the active enzyme. Therefore, MMP-1, MMP-11 and MMP-19 might be of importance for the development of high-grade astrocytic tumors and may be promising targets for therapy.