The Marine-Derived Triterpenoid Frondoside A Inhibits Thrombus Formation
Background: The marine-derived triterpenoid frondoside A inhibits the phosphatidylinositol-3-kinase (PI3K) pathway in cancer cells. Because this pathway is also crucially involved in platelet activation, we studied the effect of frondoside A on thrombus formation. Methods: Frondoside A effects on pl...
Main Authors: | , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2020-02-01
|
Series: | Marine Drugs |
Subjects: | |
Online Access: | https://www.mdpi.com/1660-3397/18/2/111 |
id |
doaj-a857090e697f47c092fe2064c6fc7c99 |
---|---|
record_format |
Article |
spelling |
doaj-a857090e697f47c092fe2064c6fc7c992020-11-25T01:40:01ZengMDPI AGMarine Drugs1660-33972020-02-0118211110.3390/md18020111md18020111The Marine-Derived Triterpenoid Frondoside A Inhibits Thrombus FormationEmmanuel Ampofo0Thomas Später1Lisa Nalbach2Michael D. Menger3Matthias W. Laschke4Institute for Clinical & Experimental Surgery, Saarland University, 66421 Homburg/Saar, GermanyInstitute for Clinical & Experimental Surgery, Saarland University, 66421 Homburg/Saar, GermanyInstitute for Clinical & Experimental Surgery, Saarland University, 66421 Homburg/Saar, GermanyInstitute for Clinical & Experimental Surgery, Saarland University, 66421 Homburg/Saar, GermanyInstitute for Clinical & Experimental Surgery, Saarland University, 66421 Homburg/Saar, GermanyBackground: The marine-derived triterpenoid frondoside A inhibits the phosphatidylinositol-3-kinase (PI3K) pathway in cancer cells. Because this pathway is also crucially involved in platelet activation, we studied the effect of frondoside A on thrombus formation. Methods: Frondoside A effects on platelet viability, surface adhesion molecule expression, and intracellular signaling were analyzed by flow cytometry and Western blot. The effect of frondoside A was analyzed by photochemically induced thrombus formation in the mouse dorsal skinfold chamber model and by tail vein bleeding. Results: Concentrations of up to 15 µM frondoside A did not affect the viability of platelets, but reduced their surface expression of P-selectin (CD62P) and the activation of glycoprotein (GP)IIb/IIIa after agonist stimulation. Additional mechanistic analyses revealed that this was mediated by downregulation of PI3K-dependent Akt and extracellular-stimuli-responsive kinase (ERK) phosphorylation. Frondoside A significantly prolonged the complete vessel occlusion time in the mouse dorsal skinfold chamber model of photochemically induced thrombus formation and also the tail vein bleeding time when compared to vehicle-treated controls. Conclusion: Our findings demonstrated that frondoside A inhibits agonist-induced CD62P expression and activation of GPIIb/IIIa. Moreover, frondoside A suppresses thrombus formation. Therefore, this marine-derived triterpenoid may serve as a lead compound for the development of novel antithrombotic drugs.https://www.mdpi.com/1660-3397/18/2/111frondoside athrombus formationthrombosishemostasisplateletspi3kdorsal skinfold chamber |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Emmanuel Ampofo Thomas Später Lisa Nalbach Michael D. Menger Matthias W. Laschke |
spellingShingle |
Emmanuel Ampofo Thomas Später Lisa Nalbach Michael D. Menger Matthias W. Laschke The Marine-Derived Triterpenoid Frondoside A Inhibits Thrombus Formation Marine Drugs frondoside a thrombus formation thrombosis hemostasis platelets pi3k dorsal skinfold chamber |
author_facet |
Emmanuel Ampofo Thomas Später Lisa Nalbach Michael D. Menger Matthias W. Laschke |
author_sort |
Emmanuel Ampofo |
title |
The Marine-Derived Triterpenoid Frondoside A Inhibits Thrombus Formation |
title_short |
The Marine-Derived Triterpenoid Frondoside A Inhibits Thrombus Formation |
title_full |
The Marine-Derived Triterpenoid Frondoside A Inhibits Thrombus Formation |
title_fullStr |
The Marine-Derived Triterpenoid Frondoside A Inhibits Thrombus Formation |
title_full_unstemmed |
The Marine-Derived Triterpenoid Frondoside A Inhibits Thrombus Formation |
title_sort |
marine-derived triterpenoid frondoside a inhibits thrombus formation |
publisher |
MDPI AG |
series |
Marine Drugs |
issn |
1660-3397 |
publishDate |
2020-02-01 |
description |
Background: The marine-derived triterpenoid frondoside A inhibits the phosphatidylinositol-3-kinase (PI3K) pathway in cancer cells. Because this pathway is also crucially involved in platelet activation, we studied the effect of frondoside A on thrombus formation. Methods: Frondoside A effects on platelet viability, surface adhesion molecule expression, and intracellular signaling were analyzed by flow cytometry and Western blot. The effect of frondoside A was analyzed by photochemically induced thrombus formation in the mouse dorsal skinfold chamber model and by tail vein bleeding. Results: Concentrations of up to 15 µM frondoside A did not affect the viability of platelets, but reduced their surface expression of P-selectin (CD62P) and the activation of glycoprotein (GP)IIb/IIIa after agonist stimulation. Additional mechanistic analyses revealed that this was mediated by downregulation of PI3K-dependent Akt and extracellular-stimuli-responsive kinase (ERK) phosphorylation. Frondoside A significantly prolonged the complete vessel occlusion time in the mouse dorsal skinfold chamber model of photochemically induced thrombus formation and also the tail vein bleeding time when compared to vehicle-treated controls. Conclusion: Our findings demonstrated that frondoside A inhibits agonist-induced CD62P expression and activation of GPIIb/IIIa. Moreover, frondoside A suppresses thrombus formation. Therefore, this marine-derived triterpenoid may serve as a lead compound for the development of novel antithrombotic drugs. |
topic |
frondoside a thrombus formation thrombosis hemostasis platelets pi3k dorsal skinfold chamber |
url |
https://www.mdpi.com/1660-3397/18/2/111 |
work_keys_str_mv |
AT emmanuelampofo themarinederivedtriterpenoidfrondosideainhibitsthrombusformation AT thomasspater themarinederivedtriterpenoidfrondosideainhibitsthrombusformation AT lisanalbach themarinederivedtriterpenoidfrondosideainhibitsthrombusformation AT michaeldmenger themarinederivedtriterpenoidfrondosideainhibitsthrombusformation AT matthiaswlaschke themarinederivedtriterpenoidfrondosideainhibitsthrombusformation AT emmanuelampofo marinederivedtriterpenoidfrondosideainhibitsthrombusformation AT thomasspater marinederivedtriterpenoidfrondosideainhibitsthrombusformation AT lisanalbach marinederivedtriterpenoidfrondosideainhibitsthrombusformation AT michaeldmenger marinederivedtriterpenoidfrondosideainhibitsthrombusformation AT matthiaswlaschke marinederivedtriterpenoidfrondosideainhibitsthrombusformation |
_version_ |
1725047665268359168 |