汉防己甲素诱导人眼Tenon囊成纤维细胞的凋亡效应

目的 研究汉防己甲素(Tet)抑制人眼Tenon囊成纤维细胞(TCFs)的凋亡效应.方法 用组织块混合消化液培养法体外培养人眼TCFs,并对培养的传代细胞进行形态学鉴定.通过透射电镜、TUNEL法和流式细胞仪观察Tet抑制人眼TCFs的凋亡作用.结果 人眼TCFs体外生长良好.透射电镜下见Tet处理后的人眼TCFs细胞质固缩,呈现凋亡表现;TUNEL法可见Tet组出现大量的阳性凋亡细胞;流式细胞仪检测TCFs经Tet作用后G_0/G_1期细胞减少22.2%,S期细胞增加20.53%,G_2/M期细胞增加1.6%,Tet抑制TCFs细胞周期于G1期,Tet组凋亡率明显高于对照组(P=0.000).结论 Tet可以诱导人眼TCFs发生凋亡,进而发挥其抑制增生的作用.     

Expressions of matrix metalloproteinases 1 and 3 and their tissue inhibitors in the conjunctival tissue and fibroblasts cultured from conjunctivochalasis

AIM: To investigate the expression of matrix metalloproteinases 1 and 3 (MMP-1 and MMP-3) and their tissue inhibitors of metalloproteinases 1 and 3 (TIMP-1 and TIMP-3) in the conjunctiva of eyes with conjunctivochalasis (CCh). METHODS: The conjunctival tissue was obtained from the CCh patients and controls, the MMPs/TIMPs expression concentration was determined by enzyme-linked immuno-sorbent assay (ELISA) and immunofluorescence staining. The expression levels of MMPs/TIMPs in the CCh fibro-blasts were determined by analyzing its concentration in the cellular supernatant that was abstracted from the in vitro cultured CCh fibroblasts. RESULTS: MMP-1 and MMP-3 levels determined by ELISA were both significantly higher in the CCh group than that in the control group (P=0.042, 0.022, respectively), so was the levels of TIMP-1 (P=0.010). No significant difference in the expression of TIMP-3 in conjunctiva was found between the two groups (P=0.298). The expression of MMP-1 and MMP-3 were both up-regulated significantly in the CCh group (P=0.040, 0.001, respectively) on immuno-fluorescence staining. MMP-1 and MMP-3 expression in the fibroblasts were both significantly higher in the CCh group than that in the control group (P=0.027, 0.001, respectively), while neither the TIMP-1 nor TIMP-3 expression was significantly different between the two groups (P=0.421, 0.237, respectively). CONCLUSION: The overexpression of MMP-1 and MMP-3 in conjunctival tissue and fibroblasts may play an important role in the pathogenesis and development of CCh.     

New model of conjunctival scarring in the mouse eye

AIMS—To establish a simple model of conjunctival wound healing in the mouse eye.
METHODS—4 week old BALB/c mouse eyes were studied over a 14 day period. Surgical procedure under general anaesthesia involved a blunt dissection of the conjunctiva performed by injection of 25 µl of PBS via a 27 gauge needle into one eye, while the contralateral eye was used as control. Mice were assessed clinically and sacrificed at 1, 2, 3, 7, and 14 days after surgery. Enucleated eyes were prepared for histological analysis. Development of scar tissue was studied with haematoxylin and eosin, oxidation aldehyde fuchsin, and van Gieson stains, with assessment of cellularity, extracellular matrix formation, and wound characterisation.
RESULTS—Histological analysis revealed a marked and characteristic healing response initiated by a predominantly granulocytic inflammatory reaction at day 1 with peak fibroblast activity 3 days after surgery. Oxytalan fibres and newly laid collagen fibres were detected early in the subconjunctival wound area and up to 7 days after surgery. Remodelling and complete organisation of scar tissue was evident by day 14.
CONCLUSION—A single subconjunctival injection in the mouse eye results in a marked and consistent healing response. This represents a simple, inexpensive, and reliable animal model of conjunctival scarring. The mouse is a biologically well characterised animal model and allows the use of a wide variety of molecular tools. There are potentially significant clinical applications, in particular in investigating the effects of modulating agents such as antimetabolites, growth factors, and their antagonists on conjunctival scarring.

Keywords: animal model; conjunctival scarring; mouse; wound healing     

人Tenon囊成纤维细胞的体外培养及增殖能力研究

目的:离体培养人Tenon囊成纤维细胞(HTF)并观察细胞增殖能力。方法:取斜视患者手术切除Tenon囊组织进行成纤维细胞原代培养,培养的细胞通过免疫荧光染色法进行鉴定。CCK-8法描述细胞生长曲线,测定细胞活力。流式细胞术分析细胞周期,计算增殖指数。结果:通过组织块法成功培养出HTF。不同代次原代培养的HTF之间增殖能力无明显统计学差异(P>0.05)。结论:HTF在体外易于培养,经过数次传代,增殖能力稳定,是进行Tenon囊抗纤维化研究的良好靶细胞。     

Effect of diclofenac sodium and dexamethasone on cultured human Tenon's capsule fibroblasts.

BACKGROUND AND OBJECTIVE: To investigate the effect of diclofenac sodium and dexamethasone on cultured human Tenon's capsule fibroblasts. MATERIALS AND METHODS: Two experiments were conducted. In the first experiment, fibroblasts were treated with either diclofenac sodium or dexamethasone at different concentrations, and the cell growth was quantified by using Coulter counter and hexosaminidase methods at 1, 3, 5, and 7 days after adding the drugs. In the second experiment, the cells were treated with each drug for 24 hours and then the cultures were switched to a drug-free medium. The cell growth was quantified at day 7 after removing the drugs from the medium. RESULTS: In the first experiment, inhibition of fibroblast growth in a dose-dependent manner was observed from days 1 to 7 in the cultures treated with each drug. The inhibitory was more pronounced in the diclofenac treated cultures. The typical spindle-shaped fibroblasts treated with higher concentrations of the drugs became spherical cells. In the second experiment, inhibition was not observed when the cultures were switched to a drug-free medium. The spherical cells recovered to spindle-shaped cells and proliferated as normal cells. CONCLUSION: Our results have shown that diclofenac sodium and dexamethasone can significantly inhibit human Tenon's capsule fibroblast growth in a cell culture model. The inhibitory effect was not observed when the cultures were switched after 24 hours to a drug-free culture medium.     

人眼Tenon囊成纤维细胞缝隙连接细胞间通讯的检测

目的:观察体外培养的人眼Tenon囊成纤维细胞(human Tenon’s capsule fibroblasts,HTFs)缝隙连接细胞间通讯(gap junctional intercellular communication,GJIC)功能及其构成蛋白connexin43(Cx43)的表达及分布。方法:锐刀划痕罗氏黄(lucifer yellow)荧光染料传输法观察GJIC功能;RT-PCR及Western blot分别检测Cx43 mRNA及蛋白表达;免疫细胞化学方法检测Cx43的分布。结果:荧光染料自划痕线向邻近未损伤细胞传输达6级细胞以上,同时检测到Cx43 mRNA与蛋白的表达;免疫细胞化学法观察到Cx43分布于细胞膜。结论:培养的HTFs具有较强的GJIC功能,通过Cx43介导GJIC赋予细胞能够相互之间传递信息的能力,提示在创伤愈合过程中GJIC对成纤维细胞功能同步化方面发挥重要作用。     

氯化锂对人眼Tenon囊成纤维细胞TGF-β及CTGF的影响

目的:研究氯化锂(lithium chloride,LiCl)对体外培养的人眼Tenon囊成纤维细胞(human Tenon's capsule fibroblasts,HTFs)转化生长因子β(transforming growth factor-β,TGF-β)及结缔组织生长因子(connective tissue growth factor,CTGF)表达的影响并探讨其作用机制.方法:体外培养HTFs并通过vimentin免疫荧光染色技术及细胞形态特征观察鉴定细胞;将HTFs分为实验组(80mmol/L LiCl处理48h)和对照组(未用药).用实时荧光定量PCR(Real-time fluorescent quantitative polymerase chain reaction, Real time-qPCR)检测两组细胞内TGF-β及CTGF基因的表达,Western blot检测两组细胞内TGF-β及CTGF蛋白的表达.结果:体外培养的HTFs能够表达TGF-β及CTGF.与对照组比较,实验组中TGF-β、CTGF基因表达下降,差异均具有统计学意义(t=20.042、14.995,P<0.05);与对照组比较,实验组中TGF-β、CTGF蛋白表达下降,差异均具有统计学意义(t=46.058、12.452, P<0.05).结论:体外培养的HTFs在基因和蛋白水平表达TGF-β及CTGF,LiCl能够抑制该过程,其可能通过该机制抑制HTFs增殖,此研究为LiCl用于青光眼滤过术后瘢痕化调控提供了实验依据.     

APC0576 decreases production of pro-inflammatory chemokine and extracellular matrix by human Tenon's capsule fibroblasts

PURPOSE: To control intraocular pressure in patients treated by trabeculectomy, progressive inflammation, fibroblast proliferation, and the enhanced expression of extracellular matrix (ECM), causes of scar formation at the bleb, must be prevented. Using human Tenon's capsule fibroblasts (TCFs), we examined the effect of APC0576, a suppressor of NF-kappaB-dependent gene activation of human vascular endothelial cells that does not adversely affect cell viability, on the production of pro-inflammatory chemokine and ECM. Its effect on TCF proliferation was also assessed. METHODS: Enzyme-linked immunosorbent assay was used to detect the pro-inflammatory cytokines IL-8 and MCP-1 in the supernatant of TCFs stimulated with IL-1alpha in the presence or absence of APCO576 and ECM proteins, COOH-terminal peptide of type I procollagen (PIP), fibronectin (FN), and laminin (LN) in supernatants and lysates of TCFs stimulated with IL-1alpha or TGF-beta. The proliferative response of IL-1alpha-stimulated TCFs was examined using the SF formazan solution reaction. RESULTS: APC0576 significantly suppressed the production by TCFs of IL-8 (p<0.0001), MCP-1(p<0.0001), PIP (supernatants: p<0.0001, cell lysates: p<0.0001), LN (supernatants: p<0.0001, lysates: p<0.0001), and FN (supernatants: p<0.0001, lysates: p<0.0001) as well as their proliferation (p<0.0001). CONCLUSIONS: APC0576 suppressed pro-inflammatory chemokine and ECM production in TCFs as well as their proliferation. It may represent a novel candidate for the postoperative management of patients treated by trabeculectomy.     

Effect of cytokines on regulation of the production of transforming growth factor beta-1 in cultured human Tenon's capsule fibroblasts

PURPOSE: Transforming growth factor-beta1 (TGF-beta1) is thought to play a pivotal role in the regulation of the wound healing process after glaucoma filtering surgery. The aim of the present study was to investigate whether platelet-derived growth factor isoforms (PDGF-AA, PDGF-BB), basic fibroblast growth factor (bFGF), epidermal growth factor (EGF), interleukin-1beta (IL-1beta) and transforming growth factor-beta1 (TGF-beta1) modulate the production of latent and/or active TGF-beta1 by cultured human Tenon's capsule fibroblasts (HTF). METHODS: Human Tenon's capsule fibroblasts were seeded at two different densities (30 cells/mm2 and 150 cells/mm2) and stimulated for five days with PDGF-AA, PDGF-BB, bFGF, EGF, IL-1beta and TGF-beta1. Control cells were treated with serum-free medium (WM/F12). The concentrations of latent and active TGF-beta1 in the medium were determined using an immunoassay before and after activation of TGF-beta1 by transient acidification. RESULTS: The concentration of latent TGF-beta1 in conditioned media from HTF seeded at high density (150 cells/mm2) significantly increased after stimulation with 5 ng/ml TGF-beta1 (151.5 +/-41.7 pg/ml) or 10 ng/ml IL-1beta (45.7+/-8.1 pg/ml). The concentration of active TGF-beta1 in conditioned media also significantly increased after stimulation of HTF with 5 ng/ml TGF-beta1 (48.4+/-27.5 pg/ml). CONCLUSIONS: The present results indicate that TGF-beta1 is the most potent inducer of its own synthesis in HTF. Activation of an autocrine TGF-beta1 loop may play a role in the wound healing response after glaucoma filtering surgery.     

Clinical study on interferon treatment of early scarring in filtering bleb

 Purpose: To investigate the effectiveness of needle revision combined with subconjuctival injection of interferon α-2b in reversing early scarring of filtering blebs following trabeculectomy surgery. Methods: Twenty-five  glaucoma patients (31 eyes) who presented with scarred or encapsulated filtering bleb after glaucoma surgery underwent needle revision in combination with subconjuctival injection of interferon α-2b, and were followed for 12 months. Intraocular pressure (IOP) and filtering bleb morphology were observed post treatment. Results: The mean time until scarring occurred was 21.0±7.4 days. The average time between recognition of bleb scarring and completion of needle revision was 2.2±0.8 days. The time interval between surgery and needle revision was inversely correlated with the time until needle revision (r = -0.694, P < 0.001). The mean IOPs before and after needle revision were 24.2±2.7mmHg and 19.6±3.8mmHg, respectively (t = 5.916,P < 0.001). At the 12-month follow-up visit, 18 eyes (58.1%) achieved complete success in IOP control, and 6 eyes (19.4%) had conditional success. The overall success rate for needling was thus 77.4%. Subconjunctival hemorrhage was observed in 4 eyes during the needle revision procedure. Punctate staining was found in the corneal epithelium of 2 eyes. Shallow  nterior chamber (Grade I or II) was identified in 5 eyes.  Conclusion: Slit-lamp needle revision combined with subconjunctival injection of interferon α-2b may be efficacious in the treatment of early scarring of filtering blebs, is easy and safe to perform, and may be considered for more widespread application.     

罗格列酮对人眼球筋膜囊成纤维细胞增殖及转化生长因子β1分泌的影响

目的 观察罗格列酮对体外培养的人眼球筋膜囊成纤维细胞(HTFs)增殖及转化生长因子β1(TGF-β1)分泌的影响.方法 对照实验研究.体外培养HTFs,分别采用四甲基偶氮唑蓝微量酶反应比色(MTT)法及划线法,对培养细胞分别加入10、20、50、100、250、300、400及500 ms/L的罗格列酮,研究不同浓度的罗格列酮对体外培养的HTFs增殖及移行的影响,同时采用酶联免疫吸附测定(ELISA)检测不同浓度的罗格列酮对细胞TGF-β1分泌量的影响,采用半定量逆转录聚合酶链反应(RT-PCR)法,研究不同浓度罗格列酮对TGF-β1 mRNA表达的影响.不同浓度罗格列酮对HTFs增殖活力、TGF-β1分泌及TGF-β1 mRNA合成的影响,采用单因素方差分析(ANOVA);不同浓度罗格列酬对细胞移行数量的影响,采用单因素多水平设计定量资料的方差分析;相邻药物浓度组间吸光度(A)值和细胞移行数量比较,采用q检验.结果 当罗格列酮浓度为20 ms/L时,MTT法测定的A值为0.29±0.02,ELISA法测定的A值为267.48±20.31,RT-PCR测定的A值为0.55±0.02,与对照组(MTT法测定的A值为0.33±0.01,ELISA法测定的A值为323.48±13.69,RT-PCR法测定的A值为0.69±O.02)相比,能明显抑制HTFs的增殖和移行,并明显下调TGF-β1的分泌和TGF-β1mRNA的表达,差异有统计学意义(F=178.293,86.404,176.102;P＜0.01);随着罗格列酮浓度的增高,抑制作用相应增强,相邻药物浓度间A值差异均有统计学意义(q值介于3.00～10.36之间,P＜0.05).结论 罗格列酮能明显抑制HTFs增殖和移行,其作用与其抑制TGF-β1的分泌有关.     

Presence of EGF growth factor ligands and their effects on cultured rat conjunctival goblet cell proliferation

The amount of mucin on the ocular surface is regulated by the rate of mucin synthesis, mucin secretion, and the number of goblet cells. We have previously shown that cholinergic agonists are potent stimuli of mucin secretion. In contrast, there have been no studies on the control of goblet cell proliferation. In this study we investigate the presence of the EGF family of growth factors and their receptors in rat conjunctiva and cultured rat conjunctival goblet cells as well as their effects on activation of signaling intermediates and goblet cell proliferation. Rat conjunctival goblet cells were grown in organ culture and identified as goblet cells by their morphology and positive staining for the lectin UEA-1 and cytokeratin 7. In the rat conjunctiva, the presence of the EGF family members epidermal growth factor (EGF), transforming growth factor alpha (TGF-alpha), heparin binding EGF (HB-EGF), and heregulin was determined by RT-PCR. The receptors for these ligands, EGF receptor (EGFR), erbB2, erbB3, and erbB4 were detected in both rat conjunctiva and goblet cells by Western blot analysis. Immunofluorescence microscopy of conjunctival tissue determined that EGFR was present as punctate staining in the cytoplasm of conjunctival goblet cells while ErbB2 was present in the basolateral and lateral membranes of goblet cells. ErbB3 was localized to the cytosol of rat conjunctival goblet cells. In cultured goblet cells, EGFR and ErbB2 were present in the perinuclear area of the cells. ErbB3 was widely distributed throughout the cytoplasm of the cells. ErbB4 was not detected in either the conjunctiva or goblet cells by immunofluorescence microscopy. Using a multiplex assay system we measured phosphorylation (activation) of p44/p42 mitogen-activated protein kinase (MAPK), also known as ERK, Jun N-terminal kinase (JNK), p38 MAPK and AKT (also known as protein kinase B), molecules known to be activated by EGF receptor members. EGF, TGF-alpha and HB-EGF activated the signaling intermediate proteins whereas heregulin did not. No EGF family member significantly activated AKT. Consistent with these findings, EGF, TGF-alpha and HB-EGF each stimulated goblet cell proliferation as measured by WST-1 assay or immunofluorescence microscopy using an antibody against Ki-67, a protein expressed in dividing cells. Heregulin did not cause goblet cell proliferation. We conclude that multiple members of the EGF family, EGF, TGF-alpha and HB-EGF, and heregulin are present with three of the four erbB receptor subtypes. EGF, TGF-alpha and HB-EGF all stimulated the activation of signaling intermediates and caused goblet cell proliferation.     

汉防己甲素体外对正常结膜与翼状胬肉成纤维细胞抑制作用的比较

目的:观察汉防己甲素(tetrandrine,Tet)对正常结膜和翼状胬肉成纤维细胞抑制作用的异同。方法:在相同的培养条件下,传第3代的正常结膜与翼状胬肉成纤维细胞皆加入不同浓度的Tet,分别于加药后1和3d行MTT检测细胞的存活率。结果:用药后1d,4×10-5和2×10-5mol/LTet对正常结膜与翼状胬肉成纤维细胞存活率无显著性差异(P>0.05),其余各浓度的Tet对翼状胬肉成纤维细胞的抑制作用大于正常结膜成纤维细胞,正常结膜成纤维细胞的存活率大于翼状胬肉成纤维细胞(P<0.01)。用药后3d,4×10-5mol/LTet组翼状胬肉成纤维细胞的存活率大于正常结膜成纤维细胞(P<0.01);其余各浓度的Tet对两种成纤维细胞存活率无显著性差异(P>0.05)。结论:用药后3d,2×10-5mol/L及半数抑制量(10-5mol/L)以下浓度的Tet对翼状胬肉成纤维细胞起抑制作用,而对正常结膜成纤维细胞的影响较小。     

Effect of brief exposure to mitomycin C on viability and proliferation of cultured human Tenon's capsule fibroblasts.

PURPOSE: The purpose of this study is to determine why a single intraoperative dose of mitomycin C (MMC) appears to promote the success of glaucoma filtration surgery. METHODS: Human Tenon's capsule fibroblasts were exposed to MMC and 5-fluorouracil (5-FU) in vitro at the concentrations and durations of exposure used clinically. Cell proliferation was assessed by quantification of 3H-thymidine uptake. Cell viability was studied using a sulfarhodamine B cell protein stain and by trypan blue exclusion. RESULTS: Neither MMC (0.4 mg/ml) nor 5-FU (40 mg/ml) were cytocidal. Both 1- and 5-minute exposures to MMC were antiproliferative. A 1-minute exposure to 0.4 mg/ml inhibited 3H-thymidine uptake by 77%. For the 5-minute exposure, 3H-thymidine uptake was inhibited by 50% at 0.06 mg/ml and by 90% at 0.4 mg/ml. For 5-FU, 3H-thymidine uptake was inhibited by 50% at 10 mg/ml and by 64% at 40 mg/ml. CONCLUSIONS: Mitomycin C probably does not improve the success of filtration surgery by killing fibroblasts. The ability of a brief exposure to MMC to improve filtration surgery may be due to an almost complete inhibition of proliferation. Alternatively, it may be due to sustained tissue binding, effects on other components of wound healing, such as cell migration and extracellular matrix production, or effects on the vasculature. A 1-minute exposure may be as effective as a 5-minute exposure.     

MMC、5-Fu和地塞米松对Tenon囊成纤维细胞抑制作用的比较研究

28mg/L、5.9946mg/L、123.936mg/L.结论 三种药物均对兔眼Tenon囊成纤维细胞增殖具有抑制作用,三种药物对成纤维细胞抗增殖的效应是MMC＞5-Fu＞地塞米松.     

秋水仙碱对人眼Tenon囊成纤维细胞增殖及凋亡的影响

目的 研究秋水仙碱对体外培养的人眼Tenon囊成纤维细胞(human Tenon's capsule fibroblasts,HTCFs)增殖及凋亡的影响.方法 体外培养HTCFs,并对传代培养的细胞进行鉴定;采用MTS法检测不同浓度的秋水仙碱对HTCFs增殖的抑制作用;以Annexin V-FITC/PI双标记流式细胞术检测秋水仙碱对细胞凋亡的影响;使用蛋白质印迹法检测秋水仙碱对凋亡相关蛋白聚腺苷二磷酸-核糖聚合酶(poly ADP-ribose polymerase,PARP)、Caspase-9、Caspase-3及active-Caspase-3表达的影响.结果 MTS检测显示秋水仙碱对HTCFs具有明显抑制作用,并呈剂量及时间依赖性.流式细胞术检测发现秋水仙碱作用48 h可诱导HTCFs发生剂量依赖性凋亡,与对照组相比,5μmol·L-1、10 μmol·L-1、20μmol·L-1的秋水仙碱作用HTCFs的凋亡率分别为(18.37±4.26)％、(33.80±5.02)％及(52.00±2.00)％,差异具有统计学意义(F=91.59,P＜0.00l).蛋白质印迹法检测结果显示,秋水仙碱可诱导细胞内凋亡关键蛋白Caspase-3及PARP的活化.结论 秋水仙碱可以明显抑制HTCFs的体外增殖,其机制可能与线粒体凋亡途径的激活而诱导细胞发生凋亡相关.     

转染Smad7基因的人眼球筋膜囊成纤维细胞Ⅰ型胶原蛋白及纤维连结蛋白表达的改变

目的观察转染Smad7基因的人眼球筋膜囊成纤维细胞（HTFs）Ⅰ型胶原蛋白和纤维连结蛋白表达的改变。方法用Nucleofector^TM核酸转染仪将含有Smad7的真核表达质粒转染至HTFs。采用实时定量逆转录聚合酶链反应法检测Ⅰ型胶原蛋白及纤维连结蛋白mRNA表达的改变。采用放射免疫法检测Ⅰ型前胶原羧端肽原（PICP）在培养液中浓度的改变,检测经转化生长因子β2（TGF-β2,10ng／ml）作用后以上指标的改变。以未转染HTFs和转染空质粒的HTFs作为对照。结果成功将含有Smad7基因的质粒转染至HTFs,并证明其Smad7基因mRNA表达明显升高。转染Smad7的HTFsⅠ型胶原蛋白mRNA表达率为（89．53±9．37）％,分别是对照组HTFs的40．47％和pCMV5-HTF8的37．94％。培养液中PICP浓度为（15．29±2．18）ug／L,分别是对照组HTFs的52．10％和pCMV5-HTFs的57．35％。转染Smad7的HTFs能够明显拮抗由TGF-β2作用引起的Ⅰ型胶原蛋白mRNA表达和PICP浓度升高（P〈0．01）;无论是否有TGF-β2作用,转染Smad7的HITs纤维连结蛋白mRNA的表达与对照组相比,差异均无统计学意义（P〉0．05）。结论Smad7能降低HTFsⅠ型胶原蛋白mRNA表达和Ⅰ型胶原蛋白的合成,但对纤维连结蛋白mRNA表达无明显作用。     

青蒿琥酯对人Tenon囊成纤维细胞增殖与凋亡的影响

目的 观察青蒿琥酯(artesunate,Art)对人Tenon囊成纤维(human Tenon's capsule fibroblasts,HTFs)细胞增殖与凋亡的影响,探讨青光眼术后滤过泡瘢痕化的治疗对策.方法体外培养HTFs细胞,应用不同浓度(50 μg·mL-1、100 μg·mL-1、150 μg·mL-1、200 μg· mL-1)的Art处理细胞,采用MTT法检测Art对细胞增殖的影响,流式细胞仪检测Art对细胞凋亡的影响,Western blot检测Art对凋亡相关蛋白Bax、Bcl-2表达的影响.结果 Art作用细胞48 h后,MTT结果显示:与空白对照组比较,不同浓度的Art处理组对HTFs细胞的增殖均有抑制作用,且呈浓度依赖性抑制(均为P＜0.05).流式细胞仪结果显示:与空白对照组比较,50 μg·mL-1、100μg·mL-1、150 μg· mL-1、200 μg·mL-1Art作用后细胞凋亡率逐渐增加(均为P＜0.05),分别为8.80％±0.88％、11.60％±0.56％、16.30％±1.03％、23.40％±1.62％.Western blot检测结果显示:与空白对照组比较,不同浓度Art处理组Bax蛋白表达明显增加,Bcl-2蛋白表达明显降低,且均呈浓度依赖性(均为P ＜0.05).结论 Art可抑制HTFs细胞增殖并诱导其凋亡,其机制可能是通过调节凋亡相关蛋白Bax、Bcl-2的表达而实现的.Art可能成为一种潜在的抗青光眼术后滤过泡瘢痕化的药物.