熊果酸对卵巢癌细胞转移的抑制作用

目的 熊果酸(UA)对人卵巢癌细胞株HO-8910PM黏附、侵袭及趋化运动的影响,并探讨其可能的作用机制。方法 采用MTT法方法检测熊果酸对HO-8910PM细胞黏附能力的影响;Transwell小室进行人工重组基底膜侵袭实验检测熊果酸对HO-8910PM细胞侵袭及运动的影响;采用RT-PCR和Western blot方法检测熊果酸对HO-8910PM细胞中MMP-2 mRNA、MMP-9 mRNA和蛋白的表达的影响。结果 在黏附试验中,不同浓度熊果酸作用细胞24h后,抑制率分别为44.03%、46.62%和55.11%,与对照组比较具有统计学意义(P＜0.05)。不同浓度的熊果酸在体外作用24h后可以显著抑制HO-8910PM细胞的侵袭能力,穿膜细胞数与对照组比较具有统计学意义(P＜0.01)。熊果酸处理后细胞趋化运动能力降低与对照组比较差异有统计学意义(P＜0.05)。不同浓度熊果酸作用24小时后,HO-8910PM细胞MMP-2 mRNA、MMP-9 mRNA表达量明显低于正常对照组(P＜0.05),Western blot结果显示:HO-8910PM细胞MMP-2、MMP-9蛋白表达量受到明显抑制(P＜0.05)。结论 熊果酸抑制人卵巢癌细胞株HO-8910PM黏附、侵袭和转移的生物学行为,其作用机制可能与熊果酸显著抑制MMP-2、MMP-9表达水平有密切关系。     

米非司酮对高转移卵巢癌细胞株HO-8910PM蛋白水解作用的影响

目的研究高转移卵巢癌细胞株HO-8910PM基质金属蛋白酶的表达情况及米非司酮对HO-8910PM细胞水解基质蛋白作用的影响.方法应用免疫组化染色法,检测H0-8910PM卵巢癌细胞基质金属蛋白酶的表达情况;采用水解空斑法检测不同浓度米非司酮对HO-8910PM细胞的体外水解人血浆基质蛋白空斑的变化.结果HO-8910PM细胞MMP-10及MMP-9表达较高,MMP-2表达较低;10 μmol/L、20μmol/L米非司酮培养48小时可显著降低具有蛋白水解作用的HO-8910PM细胞的百分比(P＜0.01),而5 μmol/L米非司酮组无明显变化(P＞0.05);不同浓度的米非司酮(5 μmol/L、10 μmol/L、20μmol/L)明显缩小HO-8910PM细胞的平均水解空斑面积.结论HO-8910PM细胞可表达MMP-10、MMP-9、MMP-2;米非司酮可抑制HO-8910PM细胞体外水解基质蛋白的能力.     

山萘黄素对高转移卵巢癌细胞HO-8910PM侵袭转移的影响

目的研究山萘黄素(kaempferol)对人高转移卵巢癌细胞HO-8910PM转移相关能力的影响及其作用的机制。方法以台盼蓝拒染法检测山萘黄素对高转移卵巢癌细胞HO-8910PM细胞增殖的影响;采用Transwell小室法检测山萘黄素对HO-8910PM细胞的侵袭能力、趋化运动能力和黏附能力的影响。结果50μmol/L的山萘黄素作用细胞6h后能抑制HO-8910PM细胞体外侵袭人工基膜和趋化运动能力,抑制率分别为(10.53±2.71)%和(10.84±1.45)%,但与对照组相比,对黏附能力的影响无显著性差异。结论山萘菌素能抑制高转移卵巢癌细胞HO-8910PM的侵袭和运动能力,对黏附能力无显著影响。     

人卵巢浆液性囊腺癌侵袭转移与β—catenin相关性的实验研究

目的:从β-catenin(β-cat)在人卵巢浆液性囊腺癌高低转移细胞株HO-8910PM及HO-8910中的表达情况探讨其与卵巢癌侵袭转移的关系.方法:分别运用免疫荧光法,Western Blotting以及RT-PCR检测细胞中β-catenin表达水平,MTT法、Transwell小室法检测细胞侵袭能力、迁移能力及黏附能力.结果:β-catenin在人卵巢浆液性囊腺癌高低转细胞株中表达水平具有显著性差异(P<0.05,P<0.01).结论:β-catenin的表达与人卵巢浆液性囊腺癌细胞的侵袭、转移密切相关.     

基质金属蛋白酶-9反义寡核苷酸对卵巢癌细胞侵袭黏附能力的影响

目的 观察基质金属蛋白酶-9（MMP-9）反义寡核苷酸（ASODN）转染对卵巢癌细胞体外侵袭黏附行为的影响,并探讨其作用机制。方法 以Lipofectinmin介导的MMP-9反义寡核苷酸转染至经纤黏连蛋白诱导MMP-9表达的卵巢癌细胞株HO-8910PM,利用RT—PCR、Western blot及明胶酶谱法检测转染寡核苷酸后HO-8910PM细胞MMPO的mRNA、蛋白表达及酶活性的变化;通过细胞体外侵袭、迁移实验和黏附实验,检测细胞侵袭黏附能力的变化。结果 卵巢癌细胞HO-8910PM转染MMP-9反义寡核苷酸后,MMP-9的mRNA及蛋白的表达受到抑制,抑制率分别为34．8％和42．5％,与对照组比较,差异有统计学意义（P〈0．05）;明胶酶活性也受到了抑制。反义寡核苷酸的转染降低了肿瘤细胞体外侵袭、迁移和黏附能力,侵袭和迁移抑制率分别为22．4％和24．8％,在60min和90min黏附抑制率分别为49．8％和38．3％。结论 MMP-9反义寡核苷酸可抑制卵巢癌细胞的侵袭黏附能力,MMP-9有可能成为抗卵巢癌侵袭转移的分子靶点。     

整合素αvβ6亚基αv及β6对卵巢癌细胞系HO-8910PM增殖及侵袭的作用

目的:研究整合素αvβ6亚基αv及β6对高转移卵巢癌细胞系HO-8910PM增殖及侵袭的影响.方法:流式细胞仪检测HO-18910PM细胞αv及β6阳性表达率,MTT实验观察抗αv及抗β6单抗对HO-8910PM细胞增殖的影响,细胞侵袭实验观察抗αv及β6单抗对该细胞系侵袭的影响.结果:HO-8910PM细胞胞质内表达αvβ6,但表达率均不高,βv阳性表达率为25.7%,β6为28.3%;MTT实验显示,αv单抗可明显抑制HO-8910PM细胞增殖(P<0.05),β6单抗抑制肿瘤增殖作用不明显.细胞侵袭实验显示,β6单抗能明显抑制HO-18910PM细胞对人工基底膜胶的侵袭穿透能力(P<0.05).结论:整合素αvβ6的αv亚基主要参与卵巢癌肿瘤细胞的增殖过程,β6亚基更多参与卵巢癌肿瘤细胞的侵袭过程.     

长链非编码RNA FAM224A调控miRNA-590-3p表达对卵巢癌细胞增殖和迁移的影响

目的探讨长链非编码RNA(lncRNA)FAM224A调控miRNA-590-3p(miR-590-3p)表达对卵巢癌细胞增殖及迁移的影响。方法选择人卵巢癌细胞株OC3、SKOV-3、HO-8910、A2780及人正常卵巢上皮细胞株IOSE80, 采用实时荧光定量聚合酶链反应(qRT-PCR)检测FAM224A在各个细胞株中的相对表达水平, 筛选FAM224A相对表达水平最低的细胞株进行后续实验。将细胞分为FAM224A组(转染FAM224A模拟质粒)和对照组(转染对照模拟质粒), 分别采用CCK-8法和细胞划痕实验检测两组细胞增殖和迁移能力。采用生物信息学网站LncBase v.2预测FAM224A可能互补结合的靶基因为miR-590-3p。qRT-PCR检测miR-590-3p和叉头框蛋白A2(FOXA2)mRNA的相对表达水平, 蛋白质印迹法检测相关蛋白的表达情况。结果卵巢癌细胞株OC3、SKOV-3、HO-8910、A2780及正常卵巢上皮细胞株IOSE80中FAM224A的相对表达水平分别为0.23±0.04、0.65±0.05、0.45±0.03、0.63±0.08和1.0...     

非小细胞肺癌耐药细胞株A549/DDP中microRNA表达的初步研究

目的:应用miRNA芯片技术检测非小细胞肺癌(NSCLC)细胞株A549及顺铂(DDP)耐药株A549/DDP miRNAs表达的差异.方法:MTT法检测A549/DDP相对于其亲本细胞A549的耐药性和耐药倍数;分别提取2种细胞的总RNA进行质检;microRNA芯片检测NSCLC细胞株A549及对应的DDP耐药株A549/DDP中miRNA表达差异;采用real-time PCR验证结果.结果:DDP对A549和A549/DDP细胞的IC50值分别为7.47和137.32μmol/L,两者差异有统计学意义(P＜0.01),耐药倍数为18.38倍.microRNA芯片结果显示,耐药株A549/DDP与亲本细胞系A549比较有34条有差异表达的miRNA(19条上调,15条下调)差异比值＞1.5倍或＜0.67倍,P＜0.05;real-time PCR的结果进一步证实miR-21、miR-31和miR-374在A549/DDP中显著上调,而miR-378、miR-886-5p、miR-886-3p和miR-520c-3p在A549/DDP中显著下调.结论:A549/DDP与A549的miRNA的表达谱存在差异,miRNA可能参与NSCLC DDP耐药,为进一步研究miRNA在NSCLCDDP耐药机制中的作用奠定基础.     

下调microRNA-214表达对人卵巢癌SKOV-3细胞迁移及侵袭的影响

目的:探讨下调microRNA-214 (miR-214)表达对人卵巢癌SKOV-3细胞迁移和侵袭的作用及其可能机制.方法:采用脂质体介导法将miR-214抑制剂转染人卵巢癌SKOV-3细胞,Real-time PCR法检测miR-214、核因子-κB(nuclear factor-κB,NF-κB)和尿激酶型纤溶酶原激活剂(uridylyl phosphate adenosine,uPA)基因mRNA的表达,Western blotting法检测细胞NF-κB和uPA蛋白表达.划痕试验检测细胞迁移能力,Transwell小室法检测细胞侵袭能力.结果:经转染miR-214抑制剂后,人卵巢癌SKOV-3细胞miR-214表达降低,细胞迁移和侵袭能力降低.同时NF-κB和uPA mRNA和蛋白表达也降低.结论:下调人卵巢癌SKOV-3细胞miR-214表达可抑制细胞迁移和侵袭能力,下凋NF-κB和uPA基因表达可能是其作用机制.     

苏拉明对体外培养的人卵巢癌细胞HO-8910PM增殖影响

目的 探讨苏拉明对体外培养的人卵巢癌细胞增殖的影响。方法 不同浓度苏拉明作用于人卵巢癌细胞株HO-8910PM，用四甲基偶氮唑蓝（MTT）比色法检测HO-8910PM增殖情况。结果 MTT结果显示50、100,200、300,400、500、600ug／mL浓度的苏拉明作用于HO-8910PM细胞96h的生长抑制率（GI）分别是13．1％、22．6％,35．1％、43．7％、54．3％、64．8％、70．9％，不同时间及不同浓度组吸光光度值A差异有统计学意义（P〈0．01）。结论 苏拉明以时间及剂量效应方式抑制体外培养的HO-8910PM增殖；提示苏拉明作为HPA抑制剂有望成为转移性卵巢癌联合化疗用药。     

Tiam1, negatively regulated by miR-22, miR-183 and miR-31, is involved in migration, invasion and viability of ovarian cancer cells

Tiam1 has been implicated in the invasive phenotype of various carcinomas. However, its role in ovarian cancer remains to be elucidated, including its upstream regulatory mechanisms. In the present study, we examined the differential expression of Tiam1 in 10 normal ovarian tissues and 17 paired primary and corresponding metastatic ovarian cancer tissues by semi-quantitative immunohistochemistry. It was found that Tiam1 expression was remarkably increased in both primary and metastatic ovarian cancer tissues relative to normal ovarian tissues. Loss-of-function study revealed that downregulation of Tiam1 in SKOV-3ip and HO-8910PM cells lead to reduced cell migration and invasion, and growth inhibition without significantly affecting cell apoptosis. Subsequent regulatory study further confirmed the negative regulatory effects of miR-22, miR-183 and miR-31 on Tiam1 expression. Taken together, our data suggested that Tiam1 may be involved in the aggressive behavior of ovarian cancer, and differential expression profiles of microRNA (miRNA) may contribute to the dysregulation of Tiam1 abundance, which contributes to the invasive, migratory and viability properties of ovarian cancer cells.     

miR-200a Overexpression in Advanced Ovarian Carcinomas as a Prognostic Indicator

Background: miR-200a expression is frequently altered in numerous cancers. The aim of the present studywas to determine the role of microRNA-200a in advanced ovarian carcinomas. Materials and Methods: Wemeasured miR-200a expression in 72 matched normal ovarian tissues and advanced ovarian carcinomas, andalso two ovarian carcinoma cell lines (SKOV3 and SKOV3.ip1 - the latter being more invasive and metastaticthan the parental SKOV3) by stem-loop real-time RT-PCR based on TaqMan microRNA assay using U6 as areference. Levels of miR-200a expression were compared by disease stage, tumor grade, histology, and lymphnode involvement. To evaluate the role of microRNA-200a, cell proliferation and invasion of SKOV-3 andSKOV-3.ip1 were analyzed with miR-200a inhibitor/mimic transfected cells. Results: Of 72 paired samples,65 cancer tissues overexpressed microRNA-200a greater than two fold in comparison with matched normalepithelium. Specifically, patients with lymph node metastasis showed significant elevation. The level correlatedwith clinicopathological features, including high tumor grade, late disease stage, most notably with lymph nodemetastasis, but not with tumor histology. In addition, SKOV-3.ip1 cells also overexpressed miR-200a comparedwith SKOV-3, and miR-200a inhibitor transfected SKOV-3.ip1 cells showed significant reduction in cellularproliferation and invasion, while a miR-200a mimic stimulated the opposite behavior. Conclusions: We providedefinitive evidence that miR-200a is up-regulated in a significant proportion of advanced ovarian carcinomas,and that elevated miR-200a expression facilitates tumor progression. Our findings support the notion that miR-200a is an onco-microRNA for ovarian cancer, and elevation is a useful potential diagnostic indicator. This studyalso provides a solid basis for further functional analysis of miR-200a in advanced ovarian cancer.     

MiR-373 targeting of the Rab22a oncogene suppresses tumor invasion and metastasis in ovarian cancer

Metastasis is major cause of mortality in patients with ovarian cancer. MiR-373 has been shown to play pivotal roles in tumorigenesis and metastasis; however, a role for miR-373 in ovarian cancer has not been investigated. In this study, we show that the miR-373 expression is down-regulated in human epithelial ovarian cancer (EOC) and inversely correlated with clinical stage and histological grade. Ectopic overexpression of miR-373 in human EOC cells suppressed cell invasion in vitro and metastasis in vivo, and the epithelial–mesenchymal transition process. Silencing the expression of miR-373 resulted in an increased migration and invasion of EOC cells. Using integrated bioinformatics analysis, gene expression arrays, and luciferase assay, we identified Rab22a as a direct and functional target of miR-373 in EOC cells. Expression levels of miR-373 were inversely correlated with Rab22a protein levels in human EOC tissues. Rab22a knockdown inhibited invasion and migration of EOC cells, increased E-cadherin expression, and suppressed the expression of N-cadherin. Moreover, overexpression of Rab22a abrogated miR-373-induced invasion and migration of EOC cells. Taken together, these results demonstrate that miR-373 suppresses EOC invasion and metastasis by directly targeting Rab22a gene, a new potential therapeutic target in EOC.     

宫颈癌及癌前病变组织中microRNAs的差异表达

目的 寻找与宫颈癌及宫颈癌前病变相关的microRNA。 方法 利用miRNA芯片,筛查宫颈 癌组织、宫颈上皮内瘤变及正常宫颈组织中差异表达的miRNA,并用实时定量RT-PCR在60份宫颈组 织标本中对4个miRNA进行验证。利用生物信息学对部分差异表达的miRNA的靶基因进行功能分析。 结果 与正常宫颈组织比较,宫颈癌及高级别宫颈病变（HSIL）中存差异表达的miRNAs,其中在宫 颈癌中下调最明显的是miR-218（下调倍数为0.175）,上调最明显的是miR-21（上调倍数为5.68）。 实时定量RT-PCR验证结果与miRNA芯片结果基本一致。功能分析显示预测的miR-218及miR-21的靶基 因与肿瘤的生长、侵袭转移有关。结论 宫颈癌及癌前病变中存在异常表达的miRNA,它们在宫颈癌 发生过程中可能起癌基因或抑癌基因的作用。     

高低转移人卵巢癌细胞系基因表达谱差异

目的 用基因芯片技术研究高低转移人卵巢癌细胞系（HO－8910PM和HO－8910）基因表达谱差异,筛选与转移相关的基因。方法 分别抽提高低转移人卵巢癌细胞和对照正常卵巢上皮的总RNA并纯化mRNA;分别将等量的mRNA逆转录合成以图像,用软件对扫描图像进行数字化处理和分析。结果 HO－8910细胞与正常卵巢上皮比较差异3倍以上共有355个基因;HO－8910PM细胞与正常卵巢上皮比较差异3倍以上共有323个基因。HO－8910PM与母系HO－8910比较差异2倍以上共有163个基因,差异3倍以上共有21个基因。结论 两株人卵巢癌细胞与正常卵巢上皮细胞基因表达谱存在差异,提示这些基因与卵巢癌的发生和发展有关;HO－8910PM与HO－8910比较存在差异的基因可能与高转移特性相关。     

Silencing of IQGAP1 by shRNA inhibits the invasion of ovarian carcinoma HO-8910PM cells in vitro

Background

IQGAP1 is a scaffolding protein and overexpressed in many human tumors, including ovarian cancer. However, the contribution of IQGAP1 to invasive properties of ovarian cancer cells remains unknown. Here, we investigated the effect of IQGAP1-specific short hairpin RNA (shRNA) expressing plasmids on metastatic potential of ovarian cancer HO-8910PM cells.

Methods

We used RT-PCR and Western blot analysis to characterize expression of IQGAP1 in three human ovarian cancer-derived cell lines SK-OV-3, HO-8910 and HO-8910PM. We then determined whether expression of endogenous IQGAP1 correlated with invasive and migratory ability by using an in vitro Matrigel assay and cell migration assay. We further knocked down IQGAP1 using shRNA expressing plasmids controlled by U1 promoter in HO-8910PM cells and examined the proliferation activity, invasive and migration potential of IQGAP1 shRNA transfectants using MTT assay, in vitro Matrigel-coated invasion assay and migration assay.

Results

IQGAP1 expression level seemed to be closely associated with the enhanced invasion and migration in ovarian cancer cell lines. Levels of both IQGAP1 mRNA and protein were significantly reduced in HO-8910PM cells transfected with plasmid-based IQGAP1-specific shRNAs. RNAi-mediated knockdown of IQGAP1 expression in HO-8910PM cells resulted in a significant decrease in cell invasion and migration.

Conclusion

Our findings support the hypothesis that IQGAP1 promotes tumor progression and identify IQGAP1 as a potential therapeutic strategy for ovarian cancer and some other tumors with over-expression of the IQGAP1 gene.     

Mouse trophoblastic cells exhibit a dominant invasiveness phenotype over cancer cells

Invasion process occurs both in mammalian embryo implantation during development and malignant cancer cell metastasis. We investigated the interactions between trophoblasts and metastatic cancer cells and found the phenomenon that mouse trophoblastic cells invaded the monolayer of malignant cancer cells in vitro and appeared the general trait of invasiveness to more than 30 types of malignant cancer cell lines which were derived from different histological origins and with different invasive or metastatic potential. We further investigated the cellular and molecular changes in the process of mouse trophoblastic cells invading human ovarian cancer HO-8910 cells. The results show that the invasion of trophoblastic cells lead HO-8910 cells near mouse embryo to apoptosis, and expression of cell-cycle-related protein cyclinD1 and Ki-67 mRNA were steadily remained both in mouse blastocysts and human ovarian cancer HO-8910 cells, which in part explain the proliferation activities of these cells. Our study also shows that expression of some proteins including MMP-9, FAK and Integrinαvβ3 was changeable in trophoblastic cells and HO-8910 cells in the process of blastocyst invasion, which suggested temporal expression of these molecules may involved in the invasive behavior of trophoblasts cells to cancer cells.     

MTA1在卵巢癌中的表达及其对卵巢癌细胞侵袭转移影响的研究

  目的  研究转移相关基因1(metastasis-associated-gene1, MTA1)表达与卵巢癌发生发展转移的关系, 研究MTA1对卵巢癌侵袭转移能力的影响, 并探讨抑制卵巢癌侵袭转移的潜在靶点。  方法  免疫组织化学法检测110例卵巢癌组织中MTA1的蛋白表达水平, 分析MTA1蛋白表达与卵巢癌分化程度、临床分期及与腹腔转移的关系。并通过脂质体介导方法, 将特异性siRNA表达载体psilenter2.0-MTA1-siRNA转染入人卵巢癌细胞系HO-8910PM, 采用RT-PCR以及Western blot检测特异性siRNA对MTA1mRNA及蛋白表达的抑制效果。应用划痕损伤实验及Transwell实验检测MTA1对卵巢癌细胞侵袭转移能力的影响。  结果  MTA1随卵巢癌组织学分化程度的升高而降低, 呈负相关, MTA1的表达随着FIGO分期期别的增加而增加, 呈正相关, MTA1的表达随卵巢癌腹腔转移而增加, 呈正相关。RT-PCR及Western blot结果显示, siRNA成功抑制卵巢癌细胞系HO-8910PM中MTA1的表达。划痕损伤实验显示转染后划痕损伤愈合明显减慢, 迁移率明显降低, Transwell体外侵袭实验结果显示, 转染后穿膜细胞百分率显著降低(P < 0.05)。  结论  MTA1表达水平的增高与卵巢癌的分化程度、临床分期及远处转移密切相关, 体外研究显示抑制MTA1在卵巢癌细胞中的表达, 使细胞生长、侵袭及转移能力均受到抑制, 提示MTA1在卵巢癌的远处侵袭转移过程中发挥重要作用, 可能成为卵巢癌基因治疗的潜在靶点。      

HLA-G expression is associated with metastasis and poor survival in the Balb/c nu/nu murine tumor model with ovarian cancer

Aberrant HLA-G expression is associated with tumor invasiveness and poor clinical prognosis; however, there is a lack of preclinical animal model to address whether HLA-G plays a causal role in the unfavorable prognosis of malignancies. In the current study, ovarian carcinoma cell lines (HO-8910 and Ovcar-3) were transfected with HLA-G gene. HLA-G expression was analyzed with western blot and flow cytometry. Transwell experiment was performed to analyze the cell migration and invasion capability and/or multicellular spheroid formation was investigated with the 3D culture assay in vitro. The effects of HLA-G expression for tumor cell organ metastasis and for mouse survival was analyzed with the Balb/c nu/nu mouse model. Our data showed that HO-8910-G and Ovcar-3-G cells are of higher invasion potential compared with the parental HO-8910 and Ovcar-3 cells. Multicellular spheroid formation exists only in HO-8910-G cells in a 3D culture assay. In Balb/c nu/nu mouse model, widespread metastasis was observed in mice xenografted with HO-8910-G cells, but not in the group with parental cells. Mouse survival was dramatically decreased in HO-8910-G and Ovcar-3-G xenografted mice than that with HO-8910 and Ovcar-3 cells, respectively. In summary, our study provided the first evidence that HLA-G expression is associated with tumor metastasis and with poor survival in an animal model with ovarian cancer.     

miR-204在卵巢癌中的表达及对卵巢癌细胞增殖、侵袭的影响

目的:探讨miR-204 在卵巢癌组织中的表达情况及其对卵巢癌细胞增殖和侵袭能力的影响.方法:RT-PCR法检测卵巢癌细胞 SKOV-3及卵巢正常上皮细胞IOSE80中 miR-204 的表达水平;CCK-8法检测侵染后SKOV-3及IOSE8细胞的增殖;流式细胞仪检测各组细胞的凋亡;Transwell 法检测miR-204转染后SKOV-3 细胞的侵袭能力.结果:SKOV-3内miR-204表达较IOSE80明显降低,二者之间具有显著性差异(P=0.008 2,P<0.05);感染后各组细胞内miR-204表达水平及细胞增殖能力、细胞凋亡能力及侵袭能力方面,实验组与空白组和对照组之间都有显著性差异(P<0.05);而空白对照组与载体对照组之间都没有显著性差异(P>0.05),说明过表达miR-204能够抑制细胞的增殖能力,促进细胞凋亡并且影响细胞侵袭能力.结论:过表达miR-204能够抑制细胞的增殖能力,促进细胞凋亡并且影响细胞侵袭能力.