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The Effect of Cigarette Smoke Extract on Trophoblast Cell Viability and Migration: The Role of Adrenomedullin

Abstract

We tested the hypothesis that cigarette smoke extract (CSE) leads to differences in expression of genes involved in angiogenesis and affects cell viability and migration in a first-trimester cytotrophoblast cell line (HTR-8/SVneo). HTR-8/SVneo cells were treated with 1% CSE, and gene expression for adrenomedullin (ADM), placental growth factor (PIGF), soluble fms-like tyrosine kinase I (sFLT-1), and vascular endothelia growth factor (VEGF) and protein content for ADM, PIGF, and sFlt-1 determined. A cell viability assay and a cell migration scratch assay were utilized following treatment with CSE with and without ADM inhibitor. Adrenomedullin, PIGF, and VEGF gene transcripts were significantly upregulated by 1% CSE treatment compared with unstimulated cells or cells treated with nicotine alone. Neither 1% CSE nor nicotine treatment alone affected sFlt-1 gene expression. There was a significant increase in secreted ADM protein from cells treated with 1% CSE detected by enzyme-linked immuno-sorbant assay, though no differences in PIGF or sFIt-1 production were seen. Treatment with 1 % CSE increased cell viability and cell migration compared with unstimulated cells and was inhibited by co-treatment with ADM inhibitor. Treatment of a first-trimester trophoblast cell line with CSE increases cell viability and cell migration that are reversed by co-treatment with ADM inhibitor, suggesting that ADM at least partially mediates cell growth and viability following CSE treatment.

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Correspondence to Chad A. Grotegut MD.

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Beiswenger, T.R., Feng, L., Brown, H.L. et al. The Effect of Cigarette Smoke Extract on Trophoblast Cell Viability and Migration: The Role of Adrenomedullin. Reprod. Sci. 19, 526–533 (2012). https://doi.org/10.1177/1933719111426600

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Keywords

  • adrenomedullin
  • angiogenic factors
  • cigarette smoke extract
  • preeclampsia
  • pregnancy
  • tobacco
  • trophoblast