目的：研究结缔组织生长因子(CTGF)对原发性开角型青光眼(POAG)患者Tenon囊成纤维细胞(Tfb)增殖、移行和转化的影响。

方法：POAG患者的Tenon囊组织行组织块法培养出来的Tfb细胞分为2组：(1)对照组；(2)CTGF处理组：DMEM-F12培养液中分别加入终浓度为1.0、10.0、100.0ng/mL的CTGF。细胞处理24h后，分别用MTT法和细胞划痕法分别检测Tfb的增殖和移行，半定量RT-PCR法和免疫组织化学法分别检测Tfb中α-平滑肌肌动蛋白(α-SMA)mRNA水平的变化和蛋白的表达。

结果：MTT法测得1.0、10.0、100.0ng/mL CTGF处理组的A值分别是0.436±0.009、0.643±0.009、0.679±0.006，对照组为0.423±0.156。细胞划痕法显示，细胞移行数分别为34.600±3.507、70.400±2.074、80.000±2.915个，对照组为31.000±3.536个。RT-PCR法得出不同浓度CTGF处理组α-SMA/β-actin条带吸光度比值分别为0.873±0.161、1.213±0.312、1.352±0.376，对照组是0.851±0.158。免疫组织化学法得出1.0、10.0、100.0ng/mL CTGF处理组阳性细胞的平均光密度值分别是0.110±0.026、0.141±0.017、0.175±0.027，对照组是0.108±0.020。上述所有观察指标10.0、100.0ng/mL CTGF组与对照组相比较均有差异(P<0.05)，而1.0ng/mL CTGF与对照组相比较均无差异(P>0.05)。

结论：CTGF能促进POAG患者Tfb的增殖、移行和表型转化，CTGF可能在滤过泡瘢痕化中扮演了重要作用。

METHODS: Tfb were cultured from Tenon's tissues in POAG patients in vitro. The free-serum DMEM-F12 containing 1.0, 10.0, 100.0ng/mL of CTGF was added into medium for 24h and 48h in different experimental group respectively, and only equal volume of free-serum DMEM-F12 was added in the negative control group. After 24h, the cell proliferation was analyzed through MTT assay, and migration was evaluated by crutch method. After 48h, Semi-quantitative RT-PCR was used to observed the mRNA expression of α-smooth muscl actin(α-SMA), and expression of α-SMA protein was examined by immunochemistry.

RESULTS: The proliferation values A of the cells in 1.0, 10.0, 100.0ng/mL of CTGF group respectively were 0.436±0.009, 0.643±0.009, 0.679±0.006, and 0.423 ±0.156 in the negative control group. The migrated cell number was 34.600±3.507, 70.400±2.074, 80.000±2.915 in different concentrations of CTGF group respectively, and 31.000±3.536 in the negative control group. And also in different experimental groups respectively, the absorbance ratio of α-SMA/β-actin was 0.873±0.161, 1.213±0.312, 1.352±0.376, and 0.851±0.158 in the negative control group, the expressing levels A of α-SMA protein in Tfb were 0.110±0.026, 0.141±0.017, 0.175±0.027, and 0.108±0.020 in the negative control group. The statistics of the above experimental data showed that, comparing with the negative control group, the 10.0 and 100.0ng/mL CTGF groups was statistically significant different(P<0.05), but there was no statistical different between the 1.0ng/mL CTGF group and the negative control group(P>0.05).

CONCLUSION: The proliferation, migration, and phenotypic transformation of Tfb can be promoted in CTGF group in POAG patients. These findings suggest that CTGF may play a role in the development of filtering bleb scarring.