Abstract
Recurrent pregnancy loss (RPL) is affecting 3–5% of the women who are expecting to have babies annually. However, the molecular changes of RPL patients have not been well characterized before. In the current study, we aimed to discover the differentially expressed genes (DEGs) in decidua from RPL patients by utilizing RNA sequencing (RNA-seq) technology. Four RPL patients and three control women were recruited to conduct RNA-seq, and 153 genes comprising 69 were upregulated and 84 downregulated showed different expression levels between the health control and RPL groups. Gene Ontology (GO) and the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis were performed to identify potential biological processes associated with RPL. We recognized that type I interferon signaling pathway and TNF signaling pathway are significantly upregulated in women with RPL. Upregulated expression of MX1, IFI27, and ISG15 in type I interferon signaling pathway and TNFRSF21 in TNF signaling pathway were validated by an extended sample of 15 RPL patients and 12 control women, by quantitative real-time polymerase chain reaction (qRT-PCR). In conclusion, the results of the current study revealed molecular changes in decidua which may reflect the intrauterine circumstance when pregnancy loss happens and potentially contributes to RPL.
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Data Availability
The datasets used and/or analyzed during the current study are available from the corresponding author on reasonable request.
Code Availability
Not applicable.
Abbreviations
- RPL:
-
Recurrent pregnancy loss
- RIF:
-
Recurrent implantation failure
- DEG:
-
Differentially expressed gene
- RNA-seq:
-
RNA sequencing
- GO:
-
Gene Ontology
- KEGG:
-
Kyoto Encyclopedia of Genes and Genomes
- PCA:
-
Principal component analysis
- qRT-PCR:
-
Quantitative real-time polymerase chain reaction
- TNFRSF21:
-
Tumor necrosis factor receptor superfamily member 21
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Acknowledgments
We thank Chaoyang Sun for the great help for bioinformatic analysis during data processing.
Funding
This study was supported by the National Key Research and Development Project (2018YFC1002103).
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Y. L. designed the experiments. Y. L., R. W., and W. H. performed the experiments. Y. L. performed data analysis, constructed the figures, and drafted the manuscript. S. L. and L. J. assisted in the design of the experiments. M. W. and Z. F. revised the manuscript. All authors read and approved the final manuscript.
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This study was approved by the Institutional Review Board of Tongji Hospital (No. TJ-IRB20181110).
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Fig. S1
Placental marker genes expressed by each sample. Heat map showing relative expression of placental marker genes in each sequenced sample (X24, X44, and X45 belong to the control group; X46, X47, X49, and X50 belong to the RPL group). The placental marker genes were provided by Suryawanshi et al. [27] (PNG 699 kb).
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Li, Y., Wang, R., Wang, M. et al. RNA Sequencing of Decidua Reveals Differentially Expressed Genes in Recurrent Pregnancy Loss. Reprod. Sci. 28, 2261–2269 (2021). https://doi.org/10.1007/s43032-021-00482-w
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DOI: https://doi.org/10.1007/s43032-021-00482-w