食管癌早期癌变的研究和annexin I表达的意义

目的 检查annexin Ⅰ在食管癌前病变到食管鳞癌不同病变过程中的表达。方法 按照研究食管癌早期病变的病理学取材方法取材,选择含有不同程度癌前病变的食管鳞癌标本11例,经连续取材制片和免疫组化分析,比较同一病例由食管癌前病变发展到食管鳞癌的全过程中annexin Ⅰ的表达改变。结果 Annexin Ⅰ表达水平在食管正常鳞状上皮中呈强阳性(11/11,100％),低度癌前病变(轻度不典型增生和中度不典型增生)减弱(3/8,37.5％),高度癌前病变(重度不典型增生和原位癌)明显减弱(12/14,85.7/％),食管浸润癌和淋巴结转移癌中阴性或显著减弱(15/15和3/3,100％)。Annex.in Ⅰ在食管低度癌前病变中的改变具有显著意义(P=0.002)。结论 Annexin Ⅰ是食管鳞癌早期侯选标志蛋白,在食管低度癌前病变时表达异常。

Expression of annexin II in gastric carcinoma and its role in gastric cancer metastasis

AIM To investigate the expression of annexin II in gastric carcinoma and its role in the metastasis of gastric cancer.METHODS The expression of annexin II in 51 cases of gastric carcinoma and 24 cases of adjacent tissues was detected by immunohistochemistry. The relationship between annexin II and clinical features of gastric cancer was analyzed. Annexin II specific si RNA was used to inhibit the expression of annexin II in gastric cancer HGC-27 cells, and the effects of annexin II on the migration and secretion of matrix metalloproteinases(MMPs) were observed.RESULTS The positive rate of annexin II protein was 82.4% in gastric cancer tissues and 37.5% in adjacent tissues. There was significant difference between the two groups(P < 0.01); and the positive expression of annexin II was not related to the sex and age of the patients(P > 0.05). The expression of annexin IIprotein was correlated with tumor size, histological differentiation, TNM stage, Lymph node metastasis and other clinical features were significantly correlated, the difference was statistically significant(P < 0.05). Inhibition of annexin II expression, gastric cancer HGC-27 cells migration and secretion of MMPs were significantly decreased, the difference was statistically significant(P < 0.05).CONCLUSION Annexin II is highly expressed in gastric cancer tissues, annexin II protein expression is related to tumor size, histological differentiation, TNM staging, lymph node metastasis and other clinical features were significantly correlated. Annexin II high expression can promote the invasion and metastasis of gastric cancer.

EXPRESSION OF ANNEXIN I IN TUMORIGENESIS OF ESOPHAGEAL SQUAMOUS CELL CARCINOMA

Objective: To detect the expression of annexin I in esophageal squamous cell carcinoma and precursor lesions, and evaluate its effect on the tumorigenesis. Methods: The immunohistochemistry S-P method was used to determine the expression of annexin I in 135 cases of esophageal squamous cell carcinoma, in which precursor lesions were found in some cases, and in the corresponding normal controls. Results: Of 135 cases, 35 (25.9%) were strongly positive, 60 (44.4%) were weakly positive and 40 (29.6%) negative, while in the corresponding normal controls, 129 (95.6%) were strongly positive, 6 (6.4%) weakly positive. The expression of annexin I was decreased in esophageal squamous cell carcinoma (P<0.0001), and the degree and rate of the decrease did not show correlation with age, gender, differentiation, and lymph node metastasis (P>0.05). The expression of annexin I was also decreased in the lesions of dysplasia and carcinoma in situ, with 2 (4.3%) strongly positive, 17 (37.0%) weakly positive and 27(58.7%) negative (P<0.0001). Conclusion: Annexin I may be useful in early detection of esophageal squamous cell carcinoma and in evaluation of predisposition for the risk of cancerization of precursor lesions.

RNA INTERFERENCE OF ANNEXIN II GENE IN PC3 CELLS BY USING SMALL INTERFERENCE RNA SYNTHESIZED WITH IN VITRO TRANSCRIPTION

Objective To silence annexin Ⅱ gene expression by using small interference RNA （siRNA） in prostate cancer cell line PC3. Methods For in vitro transcription, four sequences of 29-nucleotide DNA template oligonucleotides were designed, and one pair of the sequences were complementary to annexin Ⅱ gene. The other pair was negative control. The 8 nucleotides at the 3＇ end of each oligonucleotide were complementary to the T7 Promoter Primer. The sense and anti-sense siRNA templates were transcribed by T7 RNA polymerase and the resulting RNA transcripts were hybridized to create dsRNA. The siRNA was transfected into prostate cancer cell PC3. For assaying the efficiency of siRNA, confocal microscopy, Northern blotting, and Western blotting were employed to examine the expression of annexin Ⅱ protein and its mRNA. ^3H thymidine was used to measure DNA synthesis. Results The siRNA sequence specific to annexin Ⅱ gene was capable of inhibiting the expression of annexin Ⅱ protein and its mRNA. And cellular DNA synthesis was significantly reduced in siRNA transfected cells.Conclusions The protocol for the synthesis of siRNA by T7 RNA polymerase is feasible. Annexin Ⅱ might be involved in DNA synthesis.

Annexin A1 in the nervous and ocular systems

The therapeutic potential of Annexin A1,an important member of the Annexin superfamily,has become evident in results of experiments with multiple human systems and animal models.The anti-inflammatory and pro-resolving effects of Annexin A1 are characteristic of pathologies involving the nervous system.In this review,we initially describe the expression sites of Annexin A1,then outline the mechanisms by which Annexin A1 maintains the neurological homeostasis through either formyl peptide receptor 2 or other molecular approaches;and,finally,we discuss the neuroregenerative potential qualities of Annexin A1.The eye and the nervous system are anatomically and functionally connected,but the association between visual system pathogenesis,especially in the retina,and Annexin A1 alterations has not been well summarized.Therefore,we explain the beneficial effects of Annexin A1 for ocular diseases,especially for retinal diseases and glaucoma on the basis of published findings,and we explore present and future delivery strategies for Annexin A1 to the retina.

Annexin V-FITC/PI法检测细胞凋亡实验

课程组面向本科生开设了利用Annexin V-FITC/PI法检测细胞凋亡的实验项目。该实验加入化疗药物依托泊苷(简称VP-16)诱导Jurkat细胞发生凋亡,使用Annexin V-FITC/PI细胞凋亡检测试剂盒检测细胞凋亡情况,在荧光显微镜下拍照计数。实验结果表明:紫外光激发下,早期凋亡细胞呈现绿色荧光,而晚期凋亡细胞和坏死细胞呈现红色荧光;对细胞计数可知,对照组各时期细胞数符合正常范围,经药物处理后,各时期细胞凋亡率随药物浓度升高而升高,其中早期和晚期凋亡细胞占比最高;在高浓度药物处理后,细胞被大幅度杀伤,仅剩余几个早期凋亡细胞。实验将Annexin V-FITC/PI试剂盒与荧光显微镜结合使用,突破了教学经费、规模和仪器等条件局限,实验成本相对较低,适于大班教学,实验结果直观便捷,能够让学生深入、系统地掌握细胞凋亡的实验原理和检测方法,符合本科生实验项目的综合性高、设计性强和研究性佳的特点,切实提升细胞生物学实验课程的质量和水平。

Mechanism of annexin A1/N-formylpeptide receptor regulation of macrophage function to inhibit hepatic stellate cell activation through Wnt/β-catenin pathway

BACKGROUND Hepatic fibrosis is a common pathological process of chronic liver diseases with various causes,which can progress to cirrhosis.AIM To evaluate the effect and mechanism of action annexin(Anx)A1 in liver fibrosis and how this could be targeted therapeutically.METHODS CCl4(20%)and active N-terminal peptide of AnxA1(Ac2-26)and N-formylpeptide receptor antagonist N-Boc-Phe-Leu-Phe-Leu-Phe(Boc2)were injected intraperitoneally to induce liver fibrosis in eight wild-type mice/Anxa1 knockout mice,and to detect expression of inflammatory factors,collagen deposition,and the role of the Wnt/β-catenin pathway in hepatic fibrosis.RESULTS Compared with the control group,AnxA1,transforming growth factor(TGF)-β1,interleukin(IL)-1βand IL-6 expression in the liver of mice with hepatic fibrosis induced by CCl4 was significantly increased,which promoted collagen deposition and expression ofα-smooth muscle actin(α-SMA),collagen type I and connective tissue growth factor(CTGF),and increased progressively with time.CCl4 induced an increase in TGF-β1,IL-1βand IL-6 in liver tissue of AnxA1 knockout mice,and the degree of liver inflammation and fibrosis and expression ofα-SMA,collagen I and CTGF were significantly increased compared with in wild-type mice.After treatment with Ac2-26,expression of liver inflammatory factors,degree of collagen deposition and expression of a-SMA,collagen I and CTGF were decreased compared with before treatment.Boc2 inhibited the anti-inflammatory and antifibrotic effects of Ac2-26.AnxA1 downregulated expression of the Wnt/β-catenin pathway in CCl4-induced hepatic fibrosis.In vitro,lipopolysaccharide(LPS)induced hepatocyte and hepatic stellate cell(HSC)expression of AnxA1.Ac2-26 inhibited LPS-induced RAW264.7 cell activation and HSC proliferation,decreased expression ofα-SMA,collagen I and CTGF in HSCs,and inhibited expression of the Wnt/β-catenin pathway after HSC activation.These therapeutic effects were inhibited by Boc2.CONCLUSION AnxA1 inhibited liver fibrosis in mice,and its mechanism may be related to inhibition of HSC Wnt/β-catenin pathway activation by targeting formylpeptide receptors to regulate macrophage function.

Annexin A1在胃癌中的表达及其与胃癌预后的关系

【目的】通过检测Annexin A1蛋白在胃癌原发灶和转移灶中表达,探讨Annexin A1表达的病理临床意义及对预后的影响。【方法】构建组织芯片包含胃癌原发灶及相应的转移灶70对、癌旁组织30例,应用免疫组化方法检测Annexin A1在胃癌组织芯片中的表达,结合病理临床资料及生存资料,分析Annexin A1表达与病理临床参数的相关性。【结果】Annexin A1在癌旁组织中不表达,在胃癌原发灶中的阳性表达率为4/70(5.7%),淋巴结转移灶中的表达率为17/70(24.3%),差异有统计学意义(P<0.05)。淋巴结转移灶ANXA1的表达与TNM高分期相关(P<0.05)。Kaplan-Meier分析显示淋巴结转移灶ANXA1表达阳性组患者生存时间较阴性组短,差异有统计学意义(P<0.05)。logistic回归多因素分析ANXA1表达阳性是胃癌早期死亡的危险因素。【结论】Annexin A1的表达与肿瘤的远处转移、胃癌患者的早期死亡密切相关。

按摩对大鼠骨骼肌急性钝挫伤后膜修复蛋白dysferlin和annexin A1表达的影响

目的:研究大鼠骨骼肌急性钝挫伤后,按摩对细胞膜特异性修复蛋白dysferlin和annexin A1表达的影响,探讨按摩促进骨骼肌急性损伤修复的可能机制。方法:42只成年SD雄性大鼠随机抽取6只作为正常对照组,其余36只为模型组。模型组在建立右下肢急性腓肠肌钝挫伤模型后,随机分为自然恢复组和按摩治疗组,根据治疗时间分为损伤后7d、14d、21d三个时间点,每个时间点6只。正常对照组和自然恢复组不做治疗;按摩治疗组在建模后48h开始每天于损伤局部行按摩治疗。免疫荧光双标法标记dysferlin和annexin A1,运用激光共聚焦显微镜摄片,观察其在细胞内分布及表达;运用蛋白质印迹法检测其表达量。结果:激光共聚焦显微镜结果显示:正常肌细胞中两种荧光信号主要分布于近细胞膜周围,强度较弱,无共表达现象;模型组各时间点,两种荧光信号强度均明显增加,胞浆内也有弥散性分布,随时间的延长,信号强度逐渐减弱,细胞膜共表达现象增加;其中按摩治疗组荧光信号强度较同时期自然恢复组减弱明显,细胞膜上共表达现象增多。蛋白质印记结果显示:模型组各时间点较正常对照组,dysferlin和annexin A1蛋白表达升高,差异显著;随着时间的延长,模型组蛋白表达量均下降,自然恢复组和按摩治疗组在损伤后14d和21d比较,差异均有显著性意义(P<0.05);损伤后21d,自然恢复组较按摩治疗组dysferlin表达量比较,差异有显著性意义(P<0.05);损伤后14d和21d,自然恢复组较按摩治疗组annexin A1表达量比较,差异有显著性意义(P<0.05)。结论:这可能是其促进肌细胞膜修复相关机制之一。

河南食管癌高发区食管癌及癌旁组织AnnexinⅡ表达失调变化

背景与目的:作者对河南食管癌高发区正常人和食管癌患者蛋白质组差异蛋白分析发现AnnexinⅡ是主要差异候选蛋白之一。本研究通过分析该地区食管鳞癌(esophageal squamous cell carcinoma,ESCC)及癌旁形态学正常食管上皮(normal epithelium,NOR)、基底细胞过度增生(basal cell hyperplasia,BCH)、不典型增生(dysplasia,DYS)和原位癌(carcinoma in situ,CIS)中AnnexinⅡ动态表达状况,探讨AnnexinⅡ在ESCC癌变过程中的作用及机制。方法:采用ABC免疫组织化学法分析了河南食管癌高发区33例ESCC手术标本和癌旁NOR,以及BCH、DYS和CIS中AnnexinⅡ蛋白表达变化;另应用RT-PCR方法检测了ESCC手术标本和癌旁NOR中AnnexinⅡ mRNA差异表达情况。结果:在90.6%的NOR中有AnnexinⅡ蛋白表达,免疫染色评分≥4,随着病变加重其表达下降,CIS时AnnexinⅡ蛋白完全失表达的比例达到了50.0%。高分化SCC时AnnexinⅡ蛋白表达又升高,而后随着SCC失分化表达逐渐降低,低分化SCC中45.4%病灶AnnexinⅡ失表达。但RT-PCR并没有检测到NOR和SCC中AnnexinⅡ mRNA的差异表达。结论:AnnexinⅡ表达增强或降低可能与癌前病变逆转或进展相关,并有可能成为高危人群筛查及食管癌早期诊断的分子指标。

Annexin Ⅰ在α粒子转化细胞及肺癌组织中高表达

目的：探讨Ａｎｎｅｘｉｎ Ⅰ表达与肺癌及细胞转化的关系。方法：Ｗｅｓｔｅｒｎ印迹、Ｎｏｒｔｈｅｒｎ印迹检测永生化 人支气管上皮 ＢＥＰ２Ｄ细胞及α粒子照射转化后 ＢＥＰ２Ｄ细胞中 Ａｎｎｅｘｎｉ Ⅰ在 ｍＲＮＡ和蛋白质水平的表达，细胞免疫 化学检测 Ａｎｎｅｘｉｎ Ⅰ在 ＢＥＰ２Ｄ细胞中的分布。Ｗｅｓｔｅｒｎ印迹检测肺癌病人正常组织与肿瘤组织中 Ａｎｎｅｘｉｎ Ⅰ蛋白质的 表达。结果： Ａｎｎｅｘｉｎ Ⅰ在α粒子照射转化后 ＢＥＰ２Ｄ细胞中 ｍＲＮＡ和蛋白质水平上的表达光密度均为永生化人支气 管上皮 ＢＥＰ２Ｄ细胞的 １.５倍； Ａｎｎｅｘｉｎ Ⅰ在 ＢＥＰ２Ｄ细胞中分布于胞浆及细胞膜。本研究收集了 ８例肺鳞癌、４例肺腺 癌病人的肺肿瘤组织及正常组织，Ａｎｎｅｘｉｎ Ⅰ在肺癌组织中的表达明显高于正常组织（Ｐ＜０.０１），Ａｎｎｅｘｉｎ Ⅰ在肿瘤 组织中表达的光密度与正常肺组织之比为 ２．７。结论： Ａｎｎｅｘｉｎ Ⅰ在肺癌组织过表达，表明 Ａｎｎｅｘｉｎ Ⅰ可能与肺癌及 细胞恶性转化的发生发展有关。永生化及α粒子照射恶转 ＢＥＰ２Ｄ细胞为进一步研究 Ａｎｎｅｘｉｎ Ⅰ在恶性转化中的作 用提供了良好的模型。

肾透明细胞癌中AnnexinⅡ的表达及其临床意义

目的:探讨AnnexinⅡ在人肾透明细胞癌和癌旁组织样本中的表达情况及其临床意义。方法:采用Western blot方法检测29例新鲜肾透明细胞癌及相应癌旁组织中AnnexinⅡ蛋白的表达;采用免疫组织化学方法检测120例肾透明细胞癌及相应癌旁组织中AnnexinⅡ的表达情况,并将结果与患者的临床病理参数及预后进行相关性分析。结果:AnnexinⅡ在肾透明细胞癌及相应癌旁组织中均有表达,前者的表达水平较后者显著升高(P<0.01);免疫组织化学显示肾透明细胞癌组织中,AnnexinⅡ的阳性表达率高达67.5%,与癌旁组织存在明显差异(P<0.01);AnnexinⅡ在肾透明细胞癌组织中以胞膜表达为主,其表达状况与肾透明细胞癌患者的临床分期(P<0.05),组织学分级(P<0.05),肾被膜受侵(P<0.01)和远地转移(P<0.01)紧密相关;并且AnnexinⅡ的表达状况与肾透明细胞癌患者的5年生存率显著相关。结论:AnnexinⅡ在肾透明细胞癌组织中过表达,其与肾癌的发展密切相关,在肾癌的侵袭及转移过程中可能发挥重要作用。

Annexin B1与磷脂酰丝氨酸的结合活性

目的 :研究 annexin B1与磷脂酰丝氨酸的结合活性。方法 :在大肠杆菌中表达 annexin B1蛋白 ,经离子交换层析得纯品 ;选用 U937细胞 ,以过氧化氢诱导凋亡 ,制备小鼠洗涤血小板 ,凝血酶激活 ;以异硫氰酸荧光黄 (FITC)标记的 annexin B1检测凋亡细胞和活化血小板。结果 :FITC标记的 annexin B1既能与凋亡细胞特异性结合 ,又能与活化血小板特异性结合 ,结合活性接近 annexin 。结论 :研究表明 annexin B1可结合于凋亡细胞和活化血小板膜上的磷脂酰丝氨酸 (PS) ,而非其他膜成分 ,也进一步阐明 annexin

Annexin V-FITC/PI双标记与Hoechst33342/PI双标记流式细胞术检测细胞凋亡的比较

目的比较annexin V-FITC/PI双标记与Hoechst33342/PI双标记流式细胞术检测细胞凋亡的优缺点。方法用DEX诱导胸腺细胞凋亡和H2O2诱导K562细胞系细胞凋亡,应用Hoechst33342/PI和annexin V-FITC/PI双色标记流式细胞术检测体系检测细胞凋亡情况。结果 Annexin V-FITC/PI双标记法能准确地反映2种模型中的细胞凋亡情况,与其检测原理一致;而Hoechst33342/PI双标记法虽能准确反映DEX诱导胸腺细胞的凋亡情况,但在检测H2O2诱导的K562细胞凋亡时,其早期凋亡细胞的分布与其检测原理明显不符。结论与annexin-V-FITC/PI双标记法相比,Hoechst33342/PI双标记法有一定的局限性。

Cloning and Sequencing the Full-length cDNA of Annexin from Strawberry Fruit

采用RACE技术从草莓 (FragariaananassaDuch .)成熟果实中分离克隆了膜联蛋白 (annexin)基因的cDNA 5′_端未知序列 ,并通过测序确定了翻译的起始密码位点、终止密码位点及完整的读码框 ,从而首次获得了草莓果实膜联蛋白基因的cDNA全序列 ,命名为annfaf(annexinofFragariaananassafruit)基因。

Annexin A2基因沉默对肺癌细胞转移能力的影响

目的:研究膜联蛋白A2(Annexin A2)基因沉默对体外培养的肺腺癌细胞系转移能力的影响。方法:体外培养4种转移潜能不同的肺腺癌细胞,采用Transwell迁移模型观察细胞的迁移能力。采用RT-PCR和Western blot分析分别检测细胞中Annexin A2 mRNA及蛋白的表达。应用RNA干扰技术沉默细胞中Annexin A2表达,观察Annexin A2基因沉默前后细胞迁移能力的变化以及哺乳动物雷帕霉素靶蛋白(mammalian target of rapamycin,mTOR)表达的变化。结果:Annexin A2在高转移潜能的肺腺癌细胞系中呈高表达状态(P<0.01)。Annexin A2基因沉默后,高转移潜能的肺腺癌细胞的迁移能力下降(P<0.05)。p-mTOR在高转移潜能的肺癌细胞中呈明显高表达(P<0.01),Annexin A2基因沉默后,细胞中p-mTOR表达明显下降(P<0.01)。结论:Annexin A2基因沉默显著抑制肺癌细胞的转移能力,Annexin A2对肺腺癌细胞转移能力的调控可能与其激活mTOR信号通路有关。

转移潜能不同人肝癌细胞系差异蛋白Annexin1的功能解析

解析比较蛋白质组学筛出的差异蛋白Annexin1的生物学功能,证实其是否在肝癌转移复发中发挥作用.分别以RT-PCR、蛋白质印迹及细胞免疫化学对差异蛋白Annexin1在转移潜能不同人肝癌细胞系中的表达情况进行再验证,然后构建Annexin1反义表达质粒,转染高转移潜能人肝癌细胞系MHCC97H,通过对MHCC97H细胞的运动、侵袭、凋亡、生长周期、MMPs分泌、克隆形成等系列检测,观察目的蛋白表达降低对其生物学行为的影响,特别是转移特性的影响.验证结果均证实Annexin1在有转移潜能人肝癌细胞系MHCC97L、MHCC97H中呈高表达.转染Annexin1反义重组表达质粒后,MHCC97H细胞中Annexin1的表达被成功抑制.依据MHCC97H/pcDNA3.1(+)ASAnnexin1,MHCC97H/pcDNA3.1(+),MHCC97H的检测排序,转染反义重组质粒后的MHCC97H细胞穿过上室底膜的细胞数(运动实验)分别为:11.13±3.31,18.88±2.03,21.86±3.38;穿过人工基底膜细胞数(侵袭实验)分别是:16.43±2.23,16.40±1.57,16.86±1.52;细胞平均集落形成率(克隆形成实验)分别为:(14.33±0.46)%,(19.35±0.49)%,(20.25±0.35)%;MHCC97H细胞凋亡比例(FCM分析)依次为22.2%,6.44%,6.97%;细胞周期各时相的比例依次为:G0-G1期79.5%/76.34%/80.5%,S期13.26%/14.4%/9.69%,G2-M期7.25%/9.26%/9.81%;细胞培养上清MMP9的定量结果依次为:26.37!g/L,28.00"g/L,31.90#g/L;MMP2定量结果依次为29.46$g/L,26.37%g/L,26.53&g/L.明胶酶谱分析细胞培养上清显示,转染Annexin1反义重组表达质粒的MHCC97H细胞分泌的MMP9活性与对照比变化不明显.综合上述结果发现,转染Annexin1反义表达质粒MHCC97H细胞运动能力及集落形成率明显降低,凋亡细胞的比例增加,而侵袭潜能,细胞周期时相,细胞分泌MMP2、MMP9的量均变化不明显.提示,差异蛋白Annexin1可能通过影响细胞凋亡和细胞运动在肝癌细胞侵袭转移过程中发挥作用.

Annexin5对大鼠睾丸间质细胞睾酮分泌过程中StarD7表达的影响

目的先前研究发现annexin 5刺激大鼠睾丸间质细胞后,3β-羟类固醇脱氢酶(3βbeta-hydroxysteroid dehydro-genase,3β-HSD)及睾酮水平都增加,推测annexin 5和睾酮之间可能存在某种内在联系。文中旨在研究annexin 5对大鼠睾丸间质细胞睾酮分泌过程中的StarD7(START domain containing 7)表达的影响,探讨annexin 5影响睾酮分泌的机制。方法原代培养大鼠睾丸间质细胞,1nmol/L的annexin 5处理间质细胞24h,分别提取细胞总mRNA和总蛋白。RT-PCR检测StarD7的mRNA表达改变。Western blotting方法分析睾丸间质细胞中StarD7的蛋白表达变化。收取细胞爬片,利用免疫细胞化学的方法对StarD7在睾丸间质细胞中进行定位。结果与对照组相比,在mRNA水平上,加药组StarD7 mRNA的表达增加了44.5%(1.10±0.02 vs 1.59±0.09,P<0.05)。在蛋白水平上,加药组StarD7蛋白的表达增加了44.3%(1.49±0.10 vs 2.15±0.16,P<0.05)。StarD7主要定位在大鼠睾丸间质细胞的胞浆内,加药组的染色强度明显强于对照组。结论 StarD7在基因和蛋白水平均受annexin 5的调控,结合先前发现annexin 5可调控睾丸间质细胞睾酮合成的结果,提示annexin 5调控睾酮合成可能是通过调控StarD7的表达来实现的。

乳腺浸润性导管癌组织中CD147、MMP-9和AnnexinⅡ蛋白的表达

目的:检测乳腺浸润性导管癌组织中CD147、MMP-9及AnnexinⅡ蛋白的表达。方法:应用免疫组织化学SP法检测60例乳腺浸润性导管癌组织及60例乳腺纤维腺瘤组织中CD147、MMP-9和AnnexinⅡ蛋白的表达,并分析3者与乳腺浸润性导管癌临床病理特征的关系。结果:乳腺浸润性导管癌组织中CD147、MMP-9和AnnexinⅡ蛋白的阳性表达率分别是91.7%、86.7%及90.0%,明显高于各自在乳腺纤维腺瘤组织中的表达率(6.7%、6.7%及3.3%,P<0.001);伴有淋巴结转移的浸润性导管癌组织中CD147、MMP-9和AnnexinⅡ蛋白的表达率明显高于无淋巴结转移组(P<0.05);组织学分级越高,以上3种蛋白的表达率越高(P<0.05)。结论:CD147、MMP-9和AnnexinⅡ蛋白的异常高表达可能促进了乳腺浸润性导管癌的发展。

钙依赖性磷脂结合蛋白Annexin Ⅱ的研究进展

AnnexinⅡ是Annexins超家族中A亚家族的重要成员,具有钙离子介导的磷脂结合特性.主要表达在人体内皮细胞、单核/巨噬细胞、骨髓细胞和某些肿瘤细胞中.本文着重就AnnexinⅡ的基因结构、蛋白结构、生物学功能及其与疾病的关系进行阐述.