ΔM4: Membrane-Active Peptide with Antitumoral Potential Against Human Skin Cancer Cells

Overview

Journal Membranes (Basel)

Date 2023 Jul 28

PMID 37505037

Authors

Estefania Fandino-Devia

Gloria A Santa-Gonzalez

Maria C Klaiss-Luna

Ibeth Guevara-Lora

Veronica Tamayo

Marcela Manrique-Moreno

Affiliations

Soon will be listed here.

Abstract

Peptides have become attractive potential agents due to their affinity to cancer cells. In this work, the biological activity of the peptide ΔM4 against melanoma cancer cell line A375, epidermoid carcinoma cell line A431, and non-tumoral HaCaT cells was evaluated. The cytotoxic MTT assay demonstrates that ΔM4 show five times more activity against cancer than non-cancer cells. The potential membrane effect of ΔM4 was evaluated through lactate dehydrogenase release and Sytox uptake experiments. The results show a higher membrane activity of ΔM4 against A431 in comparison with the A375 cell line at a level of 12.5 µM. The Sytox experiments show that ΔM4 has a direct effect on the permeability of cancer cells in comparison with control cells. Infrared spectroscopy was used to study the affinity of the peptide to membranes resembling the composition of tumoral and non-tumoral cells. The results show that ΔM4 induces a fluidization effect on the tumoral lipid system over 5% molar concentration. Finally, to determine the appearance of phosphatidylserine on the surface of the cell, flow cytometry analyses were performed employing an annexin V-PE conjugate. The results suggest that 12.5 µM of ΔM4 induces phosphatidylserine translocation in A375 and A431 cancer cells. The findings of this study support the potential of ΔM4 as a selective agent for targeting cancer cells. Its mechanism of action demonstrated selectivity, membrane-disrupting effects, and induction of phosphatidylserine translocation.

Citing Articles

Comparative Study of the Potential Cell-Penetrating Peptide ∆M4 on Apoptosis Cell Signaling in A375 and A431 Cancer Cell Lines.

Fandino-Devia E, Brankiewicz A, Santa-Gonzalez G, Guevara-Lora I, Manrique-Moreno M Pharmaceutics. 2024; 16(6).

PMID: 38931896 PMC: 11207241. DOI: 10.3390/pharmaceutics16060775.

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