乳腺癌组织中CD44v6和MMP-2的表达及其与淋巴结转移的关系

目的:检测CD44v6、MMP-2在乳腺浸润性导管癌中的表达情况,探讨它们与淋巴结转移的关系。方法:采用免疫组化SP法检测100例乳腺浸润性导管癌中CD44v6、MMP-2的表达情况。结果:CD44v6蛋白在正常乳腺组织及乳腺浸润性导管癌中的阳性表达率分别为12.5%(5/40)、87%(87/100),CD44v6在淋巴结转移组中的阳性表达率(56/60)明显高于无淋巴结转移组(P<0.05)。MMP-2蛋白在正常乳腺组织及乳腺浸润性导管癌中的阳性表达率分别为0(0/40)、94%(94/100),MMP-2在淋巴结转移组中的阳性表达率(59/60)明显高于无淋巴结转移组(P<0.05)。结论:CD44v6、MMP-2蛋白在乳腺浸润性导管癌组织高表达,且均与淋巴结转移有关(P<0.05),联合检测CD44v6与MMP-2有助于综合判断乳腺浸润性导管癌的恶性程度和转移潜能。     

MMP-9和AnnexinⅡ蛋白在乳腺癌组织中的表达及意义

目的:探讨乳腺癌浸润性导管癌组织中MMP-9及AnnexinⅡ蛋白的表达及其意义.方法:应用免疫组织化学SP法检测60例乳腺纤维腺瘤组织及60例乳腺浸润性导管癌组织中MMP-9和AnnexinⅡ蛋白的表达,并分析二者与乳腺癌临床病理特征的关系.结果:MMP-9和AnnexinⅡ蛋白在浸润性导管癌中的表达率分别是86.67%(52/60)及90.00%(54/60),明显高于在乳腺纤维腺瘤组织中的表达率,且差异均有统计学意义(P＜0.001);在伴有淋巴结转移的浸润性导管癌组织中MMP-9和AnnexinⅡ蛋白的表达率明显高于无淋巴结转移组,差异均有统计学意义(P=0.003;P=0.023),组织学分级越低二者蛋白的表达越高(P=0.003;P=0.023).结论:人乳腺浸润性导管癌组织中MMP-9和AnnexinⅡ蛋白的异常表达与肿瘤的浸润转移密切相关.     

MMP-9、MMP-14、MMP-2和VEGF-C在乳腺癌中的表达及意义

[目的]探讨MMP-9、MMP-14、MMP-2和VEGF-C在乳腺癌中的表达及意义.[方法]用组织芯片和免疫组化技术检测乳腺良性病变及乳腺癌组织中MMP-2、MMP-9、MMP-14、VEGF-C的表达水平;用D2-40标记淋巴管并计数.[结果]MMP-9、MMP-14、MMP-2与VEGF-C在乳腺癌组织中的表达率及表达强度远高于乳腺良性病变组织,并呈正相关关系(r=-0.27、0.35、0.27、0.26);浸润性乳腺癌VEGF-C阳性表达率有淋巴结转移者明显高于无淋巴结转移者,差异有统计学意义(P＜0.01).[结论] MMP-9、MMP-14、MMP-2与VEGF-C的表达与乳腺癌淋巴管生成及淋巴结转移关系密切并呈正相关.     

Maspin和MMP-2在乳腺浸润性导管癌中的表达及其临床意义

目的探讨Maspin和MMP-2在乳腺浸润性导管癌组织中的表达及意义。方法应用免疫组织化学SP法检测60例乳腺浸润性导管癌及20例正常乳腺组织中Maspin和MMP-2的表达。结果Maspin在乳腺浸润性导管癌中表达阳性率为45.0%,低于在正常乳腺组织中的表达阳性率95.0%(P<0.05);MMP-2在乳腺浸润性导管癌中表达阳性率为75.0%,高于在正常乳腺组织中的表达阳性率15.0%(P<0.05)。Maspin和MMP-2的表达均与乳腺浸润性导管癌的淋巴结转移相关(P<0.05),MMP-2的表达还与乳腺浸润性导管癌临床分期相关(P<0.05)。乳腺浸润性导管癌中Maspin与MMP-2的表达呈负相关(r=-0.11,P<0.05)。结论 Maspin对乳腺浸润性导管癌的转移有抑制作用,MMP-2对乳腺浸润性导管癌的转移有促进作用,检测Maspin和MMP-2的表达可以成为判断乳腺浸润性导管癌浸润及转移能力的重要指标之一。     

乳腺浸润性导管癌中COX-2、MMP-9的表达及临床意义

目的:探讨COX-2和MMP-9蛋白在乳腺浸润性导管癌组织中的表达及其相关性.方法:应用免疫组织化学法检测52例乳腺癌组织COX-2和MMP-9蛋白的表达.结果:乳腺浸润性导管癌组织中COX-2阳性表达率为76.9%(40/52),MMP-9阳性表达率为82.7%(43/52),COX-2阳性表达与患者的年龄、肿瘤大小、雌孕激素受体无明显相关性(P＞0.05),而与淋巴结转移、TNM分期、组织学分级有关(P＜0.05);MMP-9阳性表达与患者的年龄、雌孕激素受体无明显相关性(P＞0.05),而与肿瘤大小、淋巴结转移、TNM分期、组织学分级有关(P＜0.05);乳腺浸润性导管癌组织中COX-2、MMP-9蛋白的表达之间存在显著正相关(r=0.448,P＜0.01).结论:乳腺浸润性导管癌组织中COX-2、MMP-9蛋白高表达,且两者具相关性.COX-2蛋白可通过诱导MMP-9蛋白的表达上调,增加乳腺癌细胞的侵袭力,促进乳腺癌浸润、转移.     

乳腺浸润性导管癌中Clusterin蛋白表达及其与临床病理特征的关系

[目的]探讨细胞凋亡抑制因子Clusterin在乳腺浸润性导管癌组织中的表达及其与临床病理因素的关系。[方法]应用免疫组化SP法检测70例乳腺浸润性导管癌、20例乳腺增生和10例乳腺癌旁组织标本中Clusterin的表达情况。[结果]Clusterin在乳腺癌旁正常组织、乳腺增生及乳腺浸润性导管癌组织中的阳性表达率分别为0、20.0%及71.4%,乳腺浸润性导管癌组织中的Clusterin表达水平明显高于乳腺增生及乳腺癌旁正常组织(P<0.05)。Clusterin蛋白在乳腺浸润性导管癌中的表达与临床分期、组织学分级及淋巴结转移情况有关(P<0.05),而与患者年龄、肿瘤大小无关(P>0.05)。在乳腺浸润性导管癌组织中Clusterin与ER、PR的表达呈负相关(P<0.05)。[结论]Clusterin可能在乳腺癌的发生发展中发挥重要促进作用,可望成为乳腺浸润性导管癌诊断中的标志物及新的治疗靶点。     

ATF-3在乳腺癌中的表达及临床意义

目的:探讨激活转录因子-3(ATF-3)在乳腺癌组织中的表达及临床意义.方法:采用免疫组化法检测ATF-3在乳腺浸润性导管癌、导管原位癌和癌旁乳腺组织中的表达情况及其与乳腺癌临床病理特征间的关系.结果:ATF-3在乳腺浸润性导管癌、导管原位癌及癌旁乳腺组织中的阳性表达率分别为80.95%(85/105)、48.98%(24/49)和11.43%(12/105),乳腺浸润性导管癌组ATF-3的阳性表达率显著高于导管原位癌组和癌旁乳腺组织,导管原位癌组ATF-3的阳性表达率显著高于癌旁乳腺组织,差异均具有统计学意义(P<0.0167).ATF-3的表达与乳腺癌的组织学分级、淋巴结转移及临床分期相关,而与患者年龄及肿瘤大小无关.结论:ATF-3与乳腺癌的发生、发展、侵袭和转移有关,可能作为预测乳腺癌恶性程度和评估乳腺癌患者预后的重要指标.     

MMP-2、MMP-9和ColⅣ在乳腺导管癌中的表达及其相关性

目的研究乳腺导管癌中MMP-2、MMP-9与ColⅣ的表达及其相关性,并探讨其与临床病理参数之间的关系。方法应用免疫组化双染法检测60例乳腺导管癌中MMP-2、MMP-9和ColⅣ的表达,并进行相关性分析,同时分析MMP-2、MMP-9与乳腺导管癌患者的年龄、肿瘤大小、淋巴结转移及肿瘤ER、PR、E-cad、C-erbB-2的关系。结果 MMP-2、MMP-9在乳腺导管癌中的表达显著高于乳腺正常组织(P0.05),而ColⅣ在乳腺癌组织中的表达低于乳腺正常组织(P0.05)。MMP-2、MMP-9在靠近基膜或者于将要突破基膜处的癌细胞中表达较强。MMP-2、MMP-9在不同年龄组、PR、ER、E-cad分组间的表达无显著差异(P0.05);但在肿瘤直径2 cm、有淋巴结转移及C-erbB-2阳性组的表达显著高于相应的对照组(P0.05)。ColⅣ的表达与MMP-2的表达呈负相关(r=-0.506,P=0.000),亦与MMP-9的表达呈负相关(r=-0.501,P=0.000)。结论 MMP-2、MMP-9对ColⅣ的降解可能在乳腺导管癌的局部侵袭和远处转移过程中发挥重要作用。MMP-2、MMP-9和ColⅣ的表达,可能对判断乳腺癌的恶性程度和浸润转移潜能以及评估预后有参考价值。     

基质金属蛋白酶9表达与胃癌血管生成及转移的关系

[目的]探讨基质金属蛋白酶9(MMP-9)对胃癌血管生成和转移的作用及意义.[方法]应用SP法,对63例胃癌手术切除标本进行抗人MMP-9单克隆抗体和抗因子Ⅷ相关抗原抗体(FⅧAg)免疫组织化学染色,检测和分析癌区组织、癌旁区组织、手术切缘区正常组织各区域MMP-9表达和MVD.[结果]癌区组织MMP-9高表达率(59%)显著高于癌旁区组织(22%,P＜0.01),癌旁区组织MMP-9低表达率(49%)明显高于切缘区正常组织(21%,P＜0.01);癌区的MVD表达显著高于癌旁区及正常区组织表达(P＜0.01).MMP-9的表达情况与肿瘤血管形成的程度显著相关,无论在癌区、癌旁区组织MMP-9高表达的MVD值明显高于MMP-9低表达者(P＜0.05).淋巴结转移、肝转移的癌区组织MMP-9高表达及其MVD显著高于无相应转移者.[结论] MMP-9在胃癌的血管形成中起重要作用,其可通过促进胃癌血管形成而影响胃癌的转移.     

乳腺浸润性导管癌中COX-2、MMP-2的表达及其相关性

目的 探讨COX-2和MMP-2蛋白在乳腺浸润性导管癌组织中的表达及其相关性.方法 应用免疫组织化学法检测52例乳腺浸润性导管癌组织中COX-2、MMP-2蛋白的表达情况.结果 乳腺浸润性导管癌组织中COX-2蛋白的阳性表达率为57.7%,MMP-2蛋白的阳性表达率为82.7%,COX-2、MMP-2蛋白的表达之间存在显著正相关,γ=0.498,P＜0.01.结论 乳腺浸润性导管癌组织中存在COX-2、MMP-2的高表达,且两者表达间具有相关性.COX-2蛋白可通过诱导MMP-2蛋白的表达上调,增强乳腺癌细胞的侵袭力,从而成为其促进乳腺癌浸润、转移的途径之一.     

乳腺癌组织Ezrin表达及其与临床病理特征关系的研究

目的:研究Ezrin表达与乳腺癌临床病理特征的关系。方法:应用组织芯片技术和免疫组织化学方法检测117例浸润性乳腺癌和41例乳腺良性增生中,Ezrin、ER、PR、c-erbB-2、MMP-2及MMP-9的表达。结果:Ezrin在91.89%(34/37)的乳腺良性增生中表达于导管腔缘上皮顶膜,在细胞质内无表达;在76.99%(87/113)的乳腺癌组织中,Ezrin表现为细胞质中弥散表达,未见顶膜表达,两者差异有统计学意义,P=0.000。在乳腺癌组织中,Ezrin表达与肿瘤最大直径、TNM分期、淋巴结转移以及基质细胞中MMP-2和MMP-9的表达呈正相关,P值分别为0.016、0.002、0.036、0.007和0.002;而与年龄、组织学分级、ER、PR、c-erbB-2、肿瘤细胞中MMP-2及MMP-9表达无明显相关性。结论:Ezrin在乳腺良恶性病变中有明显不同的亚细胞定位,其表达情况对乳腺病变性质的判断具有重要价值。高表达Ezrin的乳腺癌具有更高的侵袭性和淋巴结转移能力,在乳腺癌组织中检测Ezrin的表达能为患者的预后和淋巴结转移风险评估提供重要参考。     

CD147和MMP-2在乳腺癌组织中的表达及其与预后的相关性

背景与目的已知基质金属蛋白酶(matrixmetalloproteinases,MMPs)在恶性肿瘤侵袭与转移中发挥重要作用,而CD147作为MMPs的诱导因子,可促进肿瘤及间质细胞表达MMPs。本研究旨在探讨CD147和MMP-2在乳腺癌及肿瘤周围组织中的表达与乳腺癌的侵袭、转移及预后的关系。方法用免疫组化EnVision法检测112例乳腺癌及其癌旁正常组织中MMP-2和CD147的表达。结果CD147在55例肿瘤组织中有表达,阳性率为49.1%(55/112),但在癌旁正常腺体及肿瘤间质细胞中无表达。而MMP-2在60例肿瘤周围正常间质细胞中有表达,阳性率为53.6%(60/112);在33.1%(37/112)的肿瘤组织中也有表达。MMP-2的表达与肿瘤大小、淋巴结转移和临床分期呈显著性正相关(P<0.01);CD147的表达与病理分级、淋巴结转移以及雌激素受体(estrogenreceptor,ER)的表达呈显著性正相关(P<0.01)。单因素生存分析显示CD147和MMP-2阳性组的总生存率低于阴性组(P<0.05)。多元回归分析证实CD147是风险因子,其表达越高患者生存期越短。结论MMP-2及其诱导因子CD147可能参与了乳腺癌的侵袭与转移;CD147可做为独立的预后判断因子,结合病理分级和临床分期分析能提高对乳腺癌患者预后判断的准确性。     

Production of Matrix Metalloproteinases and Tissue Inhibitors of Metalloproteinases in Human Breast Carcinomas

We examined production and tissue localization of matrix metalloproteinase (MMP)-1 (tissue collagenase), MMP-2 (gelatinase A), MMP-3 (stromelysin-1), MMP-9 (gelatinase B), tissue inhibitors of metalloproteinase (TIMP)-1 and TIMP-2 in human breast carcinomas. In more than half of the cases, MMP-1, MMP-2, MMP-9, TIMP-1 and TIMP-2 were immunolocalized in carcinoma cells and MMP-2 was on the carcinoma cell membranes as well, whereas MMP-3 was positively stained in less than 15% of the cases. MMP-1 staining in carcinoma cells was significantly higher in scirrhous carcinoma than in other types of carcinoma. MMP-9 expression was remarkably higher in the carcinoma cases with lymphnode metastasis than in the non-metastatic cases. MMP-3 was mainly expressed in T-lymphocytes infiltrated in the tumor stroma. Stromal fibroblasts were positive for all these MMPs except for MMP-3. The TIMP-1 levels released into the culture media by carcinoma tissues were significantly lower than those by fibroadenoma tissues, although there were no significant differences in the levels of MMP-1, MMP-2, MMP-9 and TIMP-2. Gelatin zymographical analyses showed that the activation rate of the zymogen of MMP-2 (proMMP-2) is significantly higher in the more advanced carcinoma group with lymphnode metastasis than in the metastasis-negative and fibroadenoma groups. These data indicate that MMP-1, MMP-2 and MMP-9 are highly expressed in human breast carcinoma tissue and suggest that activation of proMMP-2 may be an indicator of lymphnode metastasis of the breast carcinoma.     

膀胱移行细胞癌MMP-9表达与间质微血管密度、肿瘤转移的关系

目的:研究基质金属蛋白酶-9(MMP-9)在膀胱移行细胞癌组织中的表达特点及其与微血管密度(microvessel density,MVD)、肿瘤转移的关系。方法:应用S-P免疫组化法检测54例膀胱移行细胞癌、10例癌旁正常组织MMP-9的表达,并在CD34染色切片上检测问质MVD。结果:膀胱移行细胞癌组织MMP-9的表达(62.96％)显著高于癌旁正常组织(20％),两者之问差异有显著性(P<0.05);MMP-9阳性组MVD均值(38.51±14.36)高于MMP-9阴性组(28.12±11.37),MMP-9的表达与MVD成正相关(P<0.01)。此外,膀胱移行细胞癌MMP-9的表达与组织学分级、大小、血管淋巴管的转移密切相关(P<0.05),而与患者年龄、临床分期无关。结论:MMP-9促进膀胱移行细胞癌间质血管生成,促进肿瘤的侵袭和转移,有可能成为判定膀胱移行细胞癌生物学行为和预后重要指标。     

Enhanced expression of tissue inhibitor of metalloproteinase-2 (TIMP-2) in the stroma of breast carcinomas correlates with tumor recurrence

The 72-kDa (MMP-2, gelatinase A) and the 92-kDa (MMP-9, gelatinase B) matrix metalloproteinases have been associated with tumor cell invasion and metastasis. Immunohistological staining of MMP-2 and MMP-9, basal lamina collagen IV and TIMP-2 were performed on frozen sections of 83 invasive breast carcinomas. MMP-2 and MMP-9 were associated with neoplastic cell plasma membrane in 72% of cases and exhibited inter-tumoral variability of staining intensity. MMP-2 and MMP-9 staining was not correlated with presence of metastases at time of diagnosis or with disease outcome. TIMP-2 was detected in the peri-tumoral stroma and was present in 87% of cases. Residual benign breast tissue was negative for TIMP-2 staining. Neoplasms with diffuse TIMP-2 staining (24%) recurred significantly more frequently (75% recurred) than cases with focal (42% recurred) or absent (27% recurred) TIMP-2. Presence of collagen IV was negatively correlated with gelatinase staining. We conclude that up-regulation of MMP-2 and MMP-9 expression in breast tumor cells is reciprocally correlated to collagen IV staining. Clinical outcome, however, is more closely related to the presence of TIMP-2 than the corresponding MMPs. Enhanced TIMP-2 expression, therefore, may denote a stromal response to tumor invasion, indicative of aggressive behavior in a subset of breast carcinomas. © 1994 Wiley-Liss, Inc.     

Silencing of Lysyl Oxidase Gene Expression by RNA Interference Suppresses Metastasis of Breast Cancer

Objective: The aim of this study was to investigate possible mechanisms of LOX gene effects on invasion andmetastasis of breast cancer cells by RNA interference. Methods: LOX-RNAi-LV was designed, synthesized, andthen transfected into a breast cancer cell line (MDA-MB-231). Expression of LOX, MMP-2 and MMP-9 wasdetermined by real-time PCR, and protein expression of LOX by Western blotting. Cell migration and invasivenesswere assessed with Transwell chambers. A total of 111 cases of breast cancer tissues, cancer-adjacent normalbreast tissues, and 20 cases of benign lesion tissues were assessed by immunohistochemistry. Results: Expressionof LOX mRNA and protein was suppressed, and the expression of MMP-2 and MMP-9 was significantly lowerin the RNAi group than the control group (P<0.05), after LOX-RNAi-LV was transfection into MDA-MB-231cells. Migration and invasion abilities were obviously inhibited. The expression of LOX protein in breast cancer,cancer-adjacent normal breast tissues and benign breast tumor were 48.6% (54/111), 26.1% (29/111), 20.0% (4/20),respectively, associations being noted with clinical stage, lymph node metastasis, tumor size and ER, PR, HER2,but not age. LOX protein was positively correlated with MMP-2 and MMP-9. Conclusion: LOX displayed animportant role in invasion and metastasis of breast cancer by regulating MMP-2 and MMP-9 expression whichprobably exerted synergistic effects on the extracellular matrix (ECM).     

结直肠癌组织MMP-7、MMP-9表达与腹腔微转移的相关性研究

目的：探讨MMP-7、MMP-9在结直肠癌腹腔微转移中的作用以及相关性。方法：收集98例结直肠癌患者手术中腹腔冲洗液,进行CEA、CK20免疫细胞化学染色确定腹腔微转移。使用组织阵列仪制作组织芯片,进行免疫组化染色（SP）,检测MMP-7、MMP-9在结直肠癌组织中的表达情况,分析其与腹腔微转移的关系。结果：CEA、CK20联合检测腹腔微转移率为32.7%（32/98）。MMP-7、MMP-9在伴有腹腔微转移的结直肠癌中阳性表达率分别为93.75%和96.88%,明显高于无腹腔微转移结直肠癌表达率72.73%和68.18%（P〈0.05,P〈0.01）。结论：MMP-7、MMP-9可能在结直肠癌腹腔微转移的发生过程中起重要作用。     

Tumor-Derived Matrix Metalloproteinase-13 (MMP-13) Expression in Benign and Malignant Breast Lesions

Introduction: Breast carcinoma is the most common malignancy and the leading cause of cancer death in women. Matrix metalloproteinase-13 (MMP-13) is a hypothetical prognostic marker in invasive breast cancer. This study aimed to determine MMP-13 expression in benign and malignant breast lesions and to evaluate the correlation between MMP-13 expression and tumor characteristics in invasive ductal carcinoma (IDC). Materials and Method: We evaluated cytoplasmic expression of MMP-13 based on staining index using immunohistochemistry (IHC) in epithelial cells, stromal fibroblasts of IDC (n=90) and benign epithelial breast (n=90) lesions. Correlation between IHC and tumor size, lymph node status, distance metastasis, estrogen receptor (ER), progesterone receptor (PR) and Her-2/neu was assessed. Results: MMP-13 expression was 45% and 38.8% in malignant epithelial cells and peritumoral fibroblasts, respectively. Only low level of MMP-13 expression was seen in benign breast lesions (8.8% in epithelial component and 2.2% in stromal fibroblasts), while high level of MMP-13 expression was noted in malignant tumors, mainly grade II or III. Cytoplasmic MMP-13 expressions in epithelial tumor cells was correlated significantly with peritumoral fibroblasts. MMP-13 expression was directly correlated with distant metastasis and tumor stage in epithelial tumoral cells and was inversely correlated with progesterone expression in both tumoral and stromal cells. Conclusion: This study showed that MMP-13 was a moderator for tumor invasion and metastasis and could be an independent predictor of poor prognosis in breast cancer. The role of MMP-13 in predicting the risk of malignant transformation in benign lesions should be further investigated.