不同碘水平时胰岛素样生长因子Ⅰ和转化生长因子β1对胎盘绒毛滋养层细胞钠碘转运体及pendrin mRNA表达的影响  被引量:4

Effects of insulin-like growth factor-Ⅰ and transforming growth factor-β1 on the expressions of sodium iodide symporter and pendrin mRNA in a placental villous trophoblast cell line exposed to different levels of iodine

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作  者:孙宇[1] 武卯富[1] 申红梅[1] 刘丽香[1] 万思源[1] 刘克新[1] 

机构地区:[1]哈尔滨医科大学中国疾病预防控制中心地方病控制中心碘缺乏病防治研究所,150081

出  处:《中华地方病学杂志》2014年第3期250-253,共4页Chinese Journal of Endemiology

基  金:国家自然科学基金(30972560)

摘  要:目的观察不同碘营养水平时胰岛素样生长因子Ⅰ(IGF-Ⅰ)和转化生长因子β1(TGF-β1)对胎盘绒毛滋养层细胞(HPT-8)钠碘转运体(NIS)及pendfinmRNA表达的影响。方法体外培养HPT-8细胞,取对数生长期细胞接种于细胞培养瓶,待细胞贴壁后根据加入培养液的不同碘含量(0、5、50、500、5000μg/L)分为低碘1组、低碘2组、对照组、高碘1组和高碘2组。培养24h后,每组细胞再以原来的碘水平,分别加入IGF-Ⅰ(0.050mg/L)、TGF-β1(0.001mg/L),即碘+IGF-Ⅰ和碘+TGF-β1。继续培养24h后,提取细胞总RNA,反转录合成cDNA,采用实时荧光定量PCR方法检测HPT-8细胞NIS及pendrinmRNA的表达。结果HPT-8细胞NISmRNA的表达:在不同碘水平,单纯加碘时NISmRNA表达组间比较差异有统计学意义(F=3.612,P〈0.01)。其中低碘1组(0.44±0.21)NISmRNA表达显著低于对照组(1.25±0.77,P〈0.01)。在相同碘水平时,低碘1组、高碘1组NISmRNA表达组内比较差异有统计学意义(F值分别为13.632、6.900,P均〈0.01)。其中在低碘1组,碘+IGF-Ⅰ(1.13±0.38)和碘+TGF-β1(0.81±0.34)NISmRNA表达高于单纯加碘(0.44±0.21,P〈0.01或〈0.05);在高碘1组,碘+TGF-β1(0.62±0.30)NISmRNA表达显著低于单纯加碘(1.23±0.91,P〈0.01)。HPT-8细胞pendrinmRNA的表达:在不同碘水平,单纯加碘时pendrinmRNA表达组间比较差异有统计学意义(F=12.717,P〈0.01)。其中低碘1组(0.59±0.15)pendrinmRNA表达显著低于对照组(1.03±0.14,P〈0.01),高碘1组(1.29±0.31)高于对照组(P〈0.05)。在相同碘水平时,低碘1组、低碘2组、对照组、高碘1组pendrinmRNA表达组内比较差异有统计学意义(F值分别为12.588、4.588、8.679、8.445,P均〈0.01)。其中在低碘1组、低碘2组和对照组,碘+IGF-�Objective To observe the effects of insulin-like growth factor-Ⅰ (IGF-Ⅰ) and transforming growth factor-β1 (TGF-β1) on the expressions of sodium iodide symporter(NIS) and pendrin mRNA in a placental villous trophoblast cell line(HPT-8) exposed to different levels of iodine. Methods HPT-8 ceils were cultured in vitro inthe culture flask and divided into low iodine group- Ⅰ (LI- Ⅰ ), low iodine group- Ⅱ (LI-Ⅱ ), control group, high iodine group-Ⅰ (HI-Ⅰ ) and high iodine group-Ⅱ (HI-Ⅱ) that exposed to different concentrations of iodine (0, 5, 50, 500, 5000 μg/L). After cell cultured for 24 h, the followings were added to the culture medium: iodine plus IGF-Ⅰ(0.050 mg/L), iodine plus TGF-β1 (0.001 mg/L). After cultured for another 24 h, total RNA was extracted, the expressions of NIS and pendrin mRNA of HPT-8 cells were determined by real-time quantitative PCR. Results The expression of NIS mRNA in HPT-8 cells: at different levels of iodine, the differences of NIS mRNA expression between groups were statistically significant in group with iodine alone(F = 3.612, P 〈 0.01 ). The expression of NIS mRNA in LI-Ⅰ group(0.44± 0.21) was significantly lower than that of control group(1.25 ± 0.77, P 〈 0.01). At the same level of iodine, in LI- Ⅰ group and HI- Ⅰ group, the differences of NIS mRNA expression within groups were statistically significant (F = 13.632, 6.900, all P 〈 0.01). In LI- Ⅰ group, the expressions of NIS mRNA were higher in iodine plus IGF-Ⅰ(1.13 ± 0.38) and iodine plus TGF-β1 (0.81 ±0.34) than that of pure iodine(0.44 ± 0.21, P 〈 0.01 or 〈 0.05);in HI- Ⅰ group, the expression of NIS mRNA was lower in iodine plus TGF-β1 (0.62± 0.30) than that of pure iodine(1.23 ± 0.91, P 〈 0.01). The expression of pendrin mRNA in HPT-8 cells: at different levels of iodine, the differences of pendrin mRNA expression between groups were statistically significant in group with iodine

关 键 词: 胎盘绒毛滋养层细胞 钠碘转运体 PENDRIN 胰岛素样生长因子Ⅰ 转化生长 因子β1 

分 类 号:R363[医药卫生—病理学]

 

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