The effects of flavonoids on human first trimester trophoblast spheroidal stem cell self-renewal, invasion and JNK/p38 MAPK activation: Understanding the cytoprotective effects of these phytonutrients against oxidative stress

Ebegboni, V.J. ORCID: 0000-0002-1898-6555, Balahmar, R.M., Dickenson, J.M. ORCID: 0000-0002-9683-969X and Sivasubramaniam, S.D. ORCID: 0000-0001-7014-5000, 2019. The effects of flavonoids on human first trimester trophoblast spheroidal stem cell self-renewal, invasion and JNK/p38 MAPK activation: Understanding the cytoprotective effects of these phytonutrients against oxidative stress. Biochemical Pharmacology. ISSN 0006-2952

[img] Text
13830_Dickenson.pdf - Post-print
Full-text access embargoed until 22 April 2020.

Download (1MB)

Abstract

Adequate invasion and complete remodelling of the maternal spiral arteries by the invading extravillous trophoblasts are the major determinants of a successful pregnancy. Increase in oxidative stress during pregnancy has been linked to the reduction in trophoblast invasion and incomplete conversion of the maternal spiral arteries, resulting in pregnancy complications such as pre-eclampsia, intrauterine growth restriction, and spontaneous miscarriages resulting in foetal/maternal mortality. The use of antioxidant therapy (vitamin C and E) and other preventative treatments (such as low dose aspirin) have been ineffective in preventing pre-eclampsia. Also, as the majority of antihypertensive drugs pose side effects, choosing an appropriate treatment would depend upon the efficacy and safety of mother/foetus. Since pre-eclampsia is mainly linked to placental oxidative stress, new diet-based antioxidants can be of use to prevent this condition. The antioxidant properties of flavonoids (naturally occurring phenolic compounds which are ubiquitously distributed in fruits and vegetables) have been well documented in non-trophoblast cells. Therefore, this study aimed to investigate the effects of flavonoids (quercetin, hesperidin) and their metabolites (Quercetin 3-O-β-glucuronide and hesperetin), either alone or in combination, on first trimester trophoblast cell line HTR-8/SVneo during oxidative stress. The data obtained from this study indicate that selected flavonoids, their respective metabolites significantly reduced the levels of reduced glutathione (p<0.0001) during HR-induced oxidative stress. These flavonoids also inhibited the activation of pro-apoptotic kinases (p38 MAPK and c-Jun N-terminal kinase) during HR-induced phosphorylation. In addition, they enhanced spheroid stem-like cell generation from HTR8/SVneo cells, aiding their invasion. Our data suggest that dietary intake of food rich in quercetin or hesperidin during early pregnancy can significantly improve trophoblast (placenta) health and function against oxidative stress.

Item Type: Journal article
Publication Title: Biochemical Pharmacology
Creators: Ebegboni, V.J., Balahmar, R.M., Dickenson, J.M. and Sivasubramaniam, S.D.
Publisher: Elsevier
Date: 22 April 2019
ISSN: 0006-2952
Identifiers:
NumberType
10.1016/j.bcp.2019.04.023DOI
S0006295219301583Publisher Item Identifier
Divisions: Schools > School of Science and Technology
Depositing User: Jonathan Gallacher
Date Added: 25 Apr 2019 10:52
Last Modified: 25 Apr 2019 10:53
URI: http://irep.ntu.ac.uk/id/eprint/36349

Actions (login required)

Edit View Edit View

Views

Views per month over past year

Downloads

Downloads per month over past year