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Effect of different concentrations of neogenin on proliferation, apoptosis and related proliferative factors in human trophoblasts

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The underlying effect of different concentrations of neogenin on proliferation, apoptosis and the related proliferative factors in human trophoblasts was explored in order to understand the function of neogenin during placentation. TEV-1 cell line was cultured and the expression of netrin-1 was detected by using indirect cellular immunofluorescence. Exponentially growing TEV-1 cells were treated by different concentrations of neogenin (0, 1, 5, 10, 50 ng/mL) for 24 h. Cell viability was measured by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay. TEV-1 cell apoptosis was assessed by flow cytometry (FCM). The expression of netrin-1 mRNA and protein in TEV-1 cells was examined by using real-time PCR and Western blot, respectively. It was found that immunoreactivity for netrin-1 was observed in cytoplasm of the trophoblasts. Immediately after treatment with different concentrations of neogenin for 24 h, the netrin-1 expression began to increase. Real-time PCR revealed that the expression level of netrin-1 mRNA was 37.59±10.25 times higher than control group when TEV-1 cells were exposed to 50 ng/mL neogenin (P<0.01), and the same tendency was seen by using Western blot. MTT results showed that proliferation of TEV-1 cells was independent of neogenin. Meanwhile, apoptosis was significantly increased to (22.15±6.15)% at 50 ng/mL neogenin and (6.55±0.25)% without neogenin (P<0.01). It is suggested that neogenin regulates proliferation and apoptosis of TEV-1 cells. And it can enhance the ability of TEV-1 cells to express netrin-1 in a dose-dependent manner. Neogenin may play an important biological role in the normal human pregnancy and contribute to the physiological pregnancy process.

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Authors and Affiliations

  1. Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China

    Shaoping Zhong  (钟少平), Li Zou  (邹 丽), Yin Zhao  (赵 茵), Bin Hu  (胡 彬) & Han Xie  (谢 涵)

  2. Department of Obstetrics, Women and Children Hospital, Jiaxing University, Jiaxing, 314000, China

    Shaoping Zhong  (钟少平)

Authors
  1. Shaoping Zhong  (钟少平)
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  2. Li Zou  (邹 丽)
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  3. Yin Zhao  (赵 茵)
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  4. Bin Hu  (胡 彬)
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  5. Han Xie  (谢 涵)
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Correspondence to Li Zou  (邹 丽).

Additional information

This project was supported by a grant from National Natural Sciences Foundation of China (No. 30872776).

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Zhong, S., Zou, L., Zhao, Y. et al. Effect of different concentrations of neogenin on proliferation, apoptosis and related proliferative factors in human trophoblasts. J. Huazhong Univ. Sci. Technol. [Med. Sci.] 30, 500–504 (2010). https://doi.org/10.1007/s11596-010-0457-x

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  • DOI: https://doi.org/10.1007/s11596-010-0457-x

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