Volume 90, Issue 2 e13744
ORIGINAL ARTICLE

Decidual lymphatic endothelial cell-derived granulocyte-macrophage colony-stimulating factor induces M1 macrophage polarization via the NF-κB pathway in severe pre-eclampsia

Yun Ji Jung

Yun Ji Jung

Department of Obstetrics and Gynecology, Institute of Women's Medical Life Science, Placenta-derived Stem Cell and Genomic Research Lab, Yonsei University College of Medicine, Yonsei University Health System, Seoul, The Republic of Korea

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Yeji Lee

Yeji Lee

Department of Obstetrics and Gynecology, Institute of Women's Medical Life Science, Placenta-derived Stem Cell and Genomic Research Lab, Yonsei University College of Medicine, Yonsei University Health System, Seoul, The Republic of Korea

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Hayan Kwon

Hayan Kwon

Department of Obstetrics and Gynecology, Institute of Women's Medical Life Science, Placenta-derived Stem Cell and Genomic Research Lab, Yonsei University College of Medicine, Yonsei University Health System, Seoul, The Republic of Korea

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Hyoung-Pyo Kim

Hyoung-Pyo Kim

Department of Environmental Medical Biology, Institute of Tropical Medicine, Yonsei University College of Medicine, Seoul, The Republic of Korea

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Han-Sung Kwon

Han-Sung Kwon

Department of Obstetrics and Gynecology, Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, The Republic of Korea

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Eunhyang Park

Eunhyang Park

Department of Pathology, Yonsei University College of Medicine, Seoul, The Republic of Korea

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JoonHo Lee

JoonHo Lee

Department of Obstetrics and Gynecology, Institute of Women's Medical Life Science, Placenta-derived Stem Cell and Genomic Research Lab, Yonsei University College of Medicine, Yonsei University Health System, Seoul, The Republic of Korea

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Young-Han Kim

Young-Han Kim

Department of Obstetrics and Gynecology, Institute of Women's Medical Life Science, Placenta-derived Stem Cell and Genomic Research Lab, Yonsei University College of Medicine, Yonsei University Health System, Seoul, The Republic of Korea

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Yong-Sun Maeng

Corresponding Author

Yong-Sun Maeng

Department of Obstetrics and Gynecology, Institute of Women's Medical Life Science, Placenta-derived Stem Cell and Genomic Research Lab, Yonsei University College of Medicine, Yonsei University Health System, Seoul, The Republic of Korea

Correspondence

Ja-Young Kwon and Yong-Sun Maeng, Department of Obstetrics and Gynecology, Institute of Women's Medical Life Science, Placenta-derived Stem Cell and Genomic Research Lab, Yonsei University College of Medicine, Yonsei University Health System, 50–1 Yonsei-ro, Seodaemoon-gu, Seoul, 03722, The Republic of Korea.

Email: [email protected] and [email protected]

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Ja-Young Kwon

Corresponding Author

Ja-Young Kwon

Department of Obstetrics and Gynecology, Institute of Women's Medical Life Science, Placenta-derived Stem Cell and Genomic Research Lab, Yonsei University College of Medicine, Yonsei University Health System, Seoul, The Republic of Korea

Correspondence

Ja-Young Kwon and Yong-Sun Maeng, Department of Obstetrics and Gynecology, Institute of Women's Medical Life Science, Placenta-derived Stem Cell and Genomic Research Lab, Yonsei University College of Medicine, Yonsei University Health System, 50–1 Yonsei-ro, Seodaemoon-gu, Seoul, 03722, The Republic of Korea.

Email: [email protected] and [email protected]

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First published: 02 July 2023
Citations: 1

Ja-Young Kwon and Yong-Sun Maeng contributed equally to this study.

Abstract

Problem

Direct interactions between macrophages and lymphatic vessels have been shown previously. In pre-eclampsia (PE), macrophages are dominantly polarized into a proinflammatory M1 phenotype and lymphangiogenesis is defective in the decidua. Here, we investigated whether decidual lymphatic endothelial cells (dLECs) affect macrophage polarization in PE.

Method of Study

THP-1 macrophages were cocultured with dLECs or cultured in the conditioned medium (CM) of dLECs. Macrophage polarization was measured using flow cytometry. Granulocyte-macrophage colony-stimulating factor (GM-CSF) expression in dLECs was measured using qRT-PCR and ELISA. The activation of nuclear translocation of nuclear factor-κ (NF-κB), an upstream signaling molecule of GM-CSF, was assessed by immunocytochemical localization of p65. Through GM-CSF knockdown and NF-κB inhibition in dLEC, we evaluated whether the GM-CSF/NF-κB pathway of PE dLEC affects decidual macrophage polarization.

Results

The ratio of inflammatory M1 macrophages with HLA-DR+/CD80+ markers significantly increased following coculturing with PE dLECs or culturing in PE dLEC CM, indicating that the PE dLEC-derived soluble factor acts in a paracrine manner. GM-CSF expression was significantly upregulated in PE dLECs. Recombinant human GM-CSF induced macrophage polarization toward an M1-like phenotype, whereas its knockdown in PE dLECs suppressed it, suggesting PE dLECs induce M1 macrophage polarization by secreting GM-CSF. The NF-κB p65 significantly increased in PE dLECs compared to the control, and pretreatment with an NF-κB inhibitor significantly suppressed GM-CSF production from PE dLECs.

Conclusions

In PE, dLECs expressing high levels of GM-CSF via the NF-κB-dependent pathway play a role in inducing decidual M1 macrophage polarization.

CONFLICT OF INTEREST STATEMENT

All authors have read the journal's policy on disclosure of potential conflicts of interest. The authors declare no conflicts of interest.

DATA AVAILABILITY STATEMENT

The datasets collected and/or analyzed during the current study are available from the corresponding author upon reasonable request.

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