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Functional reorganization of monoamine transport systems during villous trophoblast differentiation: evidence of distinct differences between primary human trophoblasts and BeWo cells

Vachalova, Veronika, Karahoda, Rona, Ottaviani, Martina, Anandam, Kasin Yadunandam, Abad, Cilia, Albrecht, Christiane, Staud, Frantisek·2022·Reproductive Biology and Endocrinology
DOI 10.1186/s12958-022-00981-8
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Abstract

Background: Three primary monoamines—serotonin, norepinephrine, and dopamine—play major roles in the placenta-fetal brain axis. Analogously to the brain, the placenta has transport mechanisms that actively take up these monoamines into trophoblast cells. These transporters are known to play important roles in the differentiated syncytiotrophoblast layer, but their status and activities in the undifferentiated, progenitor cytotrophoblast cells are not well understood. Thus, we have explored the cellular handling and regulation of monoamine transporters during the phenotypic transitioning of cytotrophoblasts along the villous pathway. Methods: Experiments were conducted with two cellular models of syncytium development: primary trophoblast cells isolated from the human term placenta (PHT), and the choriocarcinoma-derived BeWo cell line. The gene and protein expression of membrane transporters for serotonin (SERT), norepinephrine (NET), dopamine (DAT), and organic cation transporter 3 (OCT3) was determined by quantitative PCR and Western blot analysis, respectively. Subsequently, the effect of trophoblast differentiation on transporter activity was analyzed by monoamine uptake into cells. Results: We present multiple lines of evidence of changes in the transcriptional and functional regulation of monoamine transporters associated with trophoblast differentiation. These include enhancement of SERT and DAT gene and protein expression in BeWo cells. On the other hand, in PHT cells we report negative modulation of SERT, NET, and OCT3 protein expression. We show that OCT3 is the dominant monoamine transporter in PHT cells, and its main functional impact is on serotonin uptake, while passive transport strongly contributes to norepinephrine and dopamine uptake. Further, we show that a wide range of selective serotonin reuptake inhibitors affect serotonin cellular accumulation, at pharmacologically relevant drug concentrations, via their action on both OCT3 and SERT. Finally, we demonstrate that BeWo cells do not well reflect the molecular mechanisms and properties of healthy human trophoblast cells. Conclusions: Collectively, our findings provide insights into the regulation of monoamine transport during trophoblast differentiation and present important considerations regarding appropriate in vitro models for studying monoamine regulation in the placenta.

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Metadata

Authors
Vachalova, V., Karahoda, R., Ottaviani, M., Anandam, K. Y., Abad, C., Albrecht, C., & Staud, F.
Venue
Reproductive Biology and Endocrinology
Publisher
Springer Science and Business Media LLC
Published
2022-08-04
Volume
20
Issue
1
ISSN
1477-7827
DOI
10.1186/s12958-022-00981-8
Cited by
16
References
5
Language
en
Licence
Funders
Grantová Agentura České Republiky (20-13017S)

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CoChat. (2026). Citation check: Functional reorganization of monoamine transport systems during villous trophoblast differentiation: evidence of distinct differences between primary human trophoblasts and BeWo cells. https://app.cochat.ai/papers/10.1186/s12958-022-00981-8
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Vachalova, V., Karahoda, R., Ottaviani, M., Anandam, K. Y., Abad, C., Albrecht, C., & Staud, F. (2022). Functional reorganization of monoamine transport systems during villous trophoblast differentiation: evidence of distinct differences between primary human trophoblasts and BeWo cells. Reproductive Biology and Endocrinology. https://doi.org/10.1186/s12958-022-00981-8

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