Anais do Workshop INEO 2023

ANTIPARASITIC ACETOGENIN INTERACTION WITH DPPE MEMBRANE AT THE AIR-WATER INTERFACE

Published in 12/12/2023 - ISBN: 978-65-272-0088-8

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Paper Title
ANTIPARASITIC ACETOGENIN INTERACTION WITH DPPE MEMBRANE AT THE AIR-WATER INTERFACE
Authors
  • Matheus Elias Rosa
  • Luciano Caseli
  • Matheus Elias Rosa
Modality
Pôster
Subject area
Biossensores / Biomoléculas
Publishing Date
12/12/2023
Country of Publishing
Brasil
Language of Publishing
Inglês
Paper Page
https://www.even3.com.br/anais/workshop-do-ineo-2023/610747-antiparasitic-acetogenin-interaction-with-dppe-membrane-at-the-air-water-interface
ISBN
978-65-272-0088-8
Keywords
Natural Products, Biomembranes, Biomolecules, Langmuir monolayers, Acetogenins, Antitumoral, Antiparasitic, Neglected Tropical Diseases
Summary
Acetogenins are a class of biomolecules extracted from Annonaceae family plants. Many of these compounds have shown cytotoxicity, antiparasitic and antitumoral activities. However, its mechanism of action is not yet elucidated: the drug might act by penetrating the cell membrane structure, interacting with intracellular organelles, or by interacting with the cell membrane, provoking alterations in its physical-chemical properties, such as fluidity, viscoelasticity, or stability. Recently, acetylenic acetogenins were extracted from Porcelia macrocarpa seeds and presented activity against different forms of Trypanosoma cruzi protozoan, and it was observed that saturation on the aliphatic chain of the compound greatly influences the bioactivity of the drug. Therefore, to investigate the interaction of saturated acetogenins with cell membranes, they were tested against Langmuir films. These structures are monolayers oriented at the air-water interface composed of an amphiphilic molecule and can be used as a cell-membrane model if phospholipids are employed to evaluate their interaction with bioactive molecules. In this work, we studied the interaction of PMD3, a saturated acetogenin, with Langmuir monolayers composed of dipalmitoyl phosphatidyl ethanolamine (DPPE), a phospholipid well present in microbial cell membranes. The films were characterized by surface pressure - area (p-A) isotherms, compression-decompression cycles, polarization-modulated infrared reflection-absorption spectroscopy (PM-IRRAS), tensiometric stability assays, and Brewster angle microscopy (BAM). By introducing the PMD3 drug into the DPPE monolayer, we observed a shift of the isotherm curve to higher areas, indicating the film's expansion by incorporation of the drug. The drug also increased the degree of hysteresis and stability of the monolayer at the surface pressure of 30 mN/m, which is the lateral pressure observed in most natural cell membranes. PM-IRRAS spectra show the interaction of PMD3 with the alkylic chain of DPPE and BAM images, indicating a homogeneous distribution of the mixed film along the air-water interface. Thus, we conclude that acetogenin affects the thermodynamical and rheological properties of the DPPE film, further elaborating on the possible mechanism of action of the drug in parasitic cells. Acknowledgments: FAPESP, CNPq, CAPES
Title of the Event
Workshop do INEO 2023
City of the Event
Nazaré Paulista
Title of the Proceedings of the event
Anais do Workshop INEO 2023
Name of the Publisher
Even3
Means of Dissemination
Meio Digital

How to cite

ROSA, Matheus Elias; CASELI, Luciano; ROSA, Matheus Elias. ANTIPARASITIC ACETOGENIN INTERACTION WITH DPPE MEMBRANE AT THE AIR-WATER INTERFACE.. In: Anais do workshop INEO 2023. Anais...Nazaré Paulista(SP) Hotel Estância Atibainha, 2023. Available in: https//www.even3.com.br/anais/workshop-do-ineo-2023/610747-ANTIPARASITIC-ACETOGENIN-INTERACTION-WITH-DPPE-MEMBRANE-AT-THE-AIR-WATER-INTERFACE. Access in: 24/04/2025

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