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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1.02±0.11，差异有统计学意义（n F=14.78，n P<0.01），其中FAM224A相对表达水平最低的细胞株是OC3。CCK-8法检测结果显示，培养第2、3、4、5天，FAM224A组OC3细胞增殖能力均低于对照组（均n P<0.05）。FAM224A组和对照组OC3细胞的划痕愈合率分别为（18.6±2.3）%和（71.7±7.2）%，差异有统计学意义（n t=6.99，n P<0.01）。FAM224A组和对照组OC3细胞中FAM224A相对表达水平分别为12.36±1.45和1.14±0.24（n t=13.08，n P<0.01）；miR-590-3p相对表达水平分别为0.19±0.06和1.04±0.20（n t=4.01，n P<0.01）；FOXA2 mRNA相对表达水平分别为6.37±1.37和1.05±0.08（n t=3.86，n P<0.01）。与对照组比较，FAM224A组OC3细胞FOXA2蛋白表达升高，细胞增殖蛋白细胞周期蛋白依赖激酶2（CDK2）、cyclin D3表达均降低，细胞迁移蛋白Snail表达降低。n 结论:FAM224A在卵巢癌细胞株中低表达，FAM224A通过抑制miR-590-3p表达降低卵巢癌OC3细胞的增殖和迁移能力。“,”Objective:To explore the effects of long non-coding RNA (lncRNA) FAM224A on the proliferation and migration of ovarian cancer cells by regulating the expression of miRNA-590-3p (miR-590-3p).Methods:Human ovarian cancer cell lines OC3, SKOV-3, HO-8910, A2780 and human normal ovarian epithelial cell line IOSE80 were selected, and the relative expression of FAM224A in each cell line was detected by real-time quantitative polymerase chain reaction (qRT-PCR). The cell line with the lowest relative expression level of FAM224A was screened for follow-up experiment. The cells were divided into FAM224A group (transfected with FAM224A mimic gene) and control group (transfected with control mimic gene). CCK-8 method and cell scratch test were used to detect the cell proliferation and migration ability of the two groups. The bioinformatics website LncBase v.2 predicted that the target gene that FAM224A might complementarily bind to was miR-590-3p. qRT-PCR was used to detect the relative expression levels of miR-590-3p and forkhead box protein A2 (FOXA2) mRNA, and the expressions of related proteins were detected by Western blot.Results:The relative expression levels of FAM224A in ovarian cancer cell lines OC3, SKOV-3, HO-8910, A2780 and normal ovarian epithelial cell line IOSE80 were 0.23±0.04, 0.65±0.05, 0.45±0.03, 0.63±0.08 and 1.02±0.11, respectively, and the difference was statistically significant (n F = 14.78, n P < 0.01), and the cell line with the lowest relative expression level of FAM224A was OC3. The results of CCK-8 method showed that the proliferation ability of OC3 cells in the FAM224A group was lower than that in the control group on the 2nd, 3rd, 4th and 5th day of culture (all n P < 0.05). The scratch healing rates of OC3 cells in the FAM224A group and the control group were (18.6±2.3)% and (71.7±7.2)%, respectively, and the difference was statistically significant ( n t = 6.99, n P < 0.01). The relative expression levels of FAM224A in OC3 cells in the FAM224A group and the control group was 12.36±1.45 and 1.14±0.24, respectively ( n t = 13.08, n P < 0.01); the relative expression levels of miR-590-3p were 0.19±0.06 and 1.04±0.20, respectively ( n t = 4.01, n P < 0.01); the relative expression levels of FOXA2 mRNA were 6.37±1.37 and 1.05±0.08, respectively ( n t = 3.86, n P < 0.01). Compared with the control group, the expression of FOXA2 protein in OC3 cells in the FAM224A group was increased, the expressions of cell proliferation protein cyclin-dependent kinase 2 (CDK2) and cyclin D3 were decreased, and the expression of cell migration protein Snail was decreased.n Conclusions:FAM224A is low expressed in ovarian cancer cell lines. FAM224A reduces the proliferation and migration ability of ovarian cancer OC3 cells by inhibiting the expression of miR-590-3p.