GsMTx-4 venom toxin antagonizes biophysical modulation of metastatic traits in human osteosarcoma cells

Despite their genetic diversity, metastatic cells converge on similar physical constraints during tumor progression. At the nanoscale, these forces can induce substantial molecular deformations, altering the structure and behavior of cancer cells. To address the challenges of osteosarcoma (OS), a hi...

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Veröffentlicht in:European journal of cell biology 2024-12, Vol.104 (1), p.151469, Article 151469
Hauptverfasser: Buglione, Arianna, Alloisio, Giulia, Ciaccio, Chiara, Rodriguez, David Becerril, Dogali, Simone, Luce, Marco, Marini, Stefano, Cricenti, Antonio, Gioia, Magda
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container_title European journal of cell biology
container_volume 104
creator Buglione, Arianna
Alloisio, Giulia
Ciaccio, Chiara
Rodriguez, David Becerril
Dogali, Simone
Luce, Marco
Marini, Stefano
Cricenti, Antonio
Gioia, Magda
description Despite their genetic diversity, metastatic cells converge on similar physical constraints during tumor progression. At the nanoscale, these forces can induce substantial molecular deformations, altering the structure and behavior of cancer cells. To address the challenges of osteosarcoma (OS), a highly aggressive cancer, we explored the mechanobiology of OS cells, in vitro. Using uniaxial-stretching technology, we examined the biophysical modulation of metastatic traits in SAOS-2, U-2 OS, and non-tumorigenic hFOB cells. Changes in cell morphology were quantified using confocal and fluorescence microscopy. To elucidate the molecular mechanisms that translate biomechanical alterations into biochemical responses, we employed Western blotting, real-time quantitative RT-PCR, reactive oxygen species ROS assay, and the mechanosensitive channel blocker Grammostola MechanoToxin4 (GsMTx-4). Our study reveals that mechanical stimulation uniquely affects OS cells, increasing nuclear size and altering the N/C ratio. We found that mechanosensitive (MS) channels are activated, leading to ROS accumulation, Src protein modulation, and histone H3 acetylation. These changes influence OS cell motility and adhesion but not proliferation. Importantly, mechanical preconditioning differentially impacts doxorubicin resistance, correlating with the Src-H3 acetylation axis. This study underscores the critical role of MS channels in OS cells and highlights the importance of mechanobiology in identifying molecular pathways that traditional biochemical approaches may not reveal. Notably, the GsMTx-4 venom peptide effectively countered mechanically induced responses, particularly by inhibiting OS cell migration, without harming healthy cells. Thus, suggesting its potential as a promising therapeutic agent for targeting osteosarcoma metastasis [Display omitted] •The Pivotal Role of Mechanosensitive Channels in Modulating Osteosarcoma Cell Behavior.•Mechanosensitive Channels Drive SRC-histone H3 Acetylation Axis and Doxorubicin Resistance in Osteosarcoma Cells.•GsTMx-4 venom peptide effectively antagonize the mechanically induced changes without harming healthy cells.
doi_str_mv 10.1016/j.ejcb.2024.151469
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At the nanoscale, these forces can induce substantial molecular deformations, altering the structure and behavior of cancer cells. To address the challenges of osteosarcoma (OS), a highly aggressive cancer, we explored the mechanobiology of OS cells, in vitro. Using uniaxial-stretching technology, we examined the biophysical modulation of metastatic traits in SAOS-2, U-2 OS, and non-tumorigenic hFOB cells. Changes in cell morphology were quantified using confocal and fluorescence microscopy. To elucidate the molecular mechanisms that translate biomechanical alterations into biochemical responses, we employed Western blotting, real-time quantitative RT-PCR, reactive oxygen species ROS assay, and the mechanosensitive channel blocker Grammostola MechanoToxin4 (GsMTx-4). Our study reveals that mechanical stimulation uniquely affects OS cells, increasing nuclear size and altering the N/C ratio. We found that mechanosensitive (MS) channels are activated, leading to ROS accumulation, Src protein modulation, and histone H3 acetylation. These changes influence OS cell motility and adhesion but not proliferation. Importantly, mechanical preconditioning differentially impacts doxorubicin resistance, correlating with the Src-H3 acetylation axis. This study underscores the critical role of MS channels in OS cells and highlights the importance of mechanobiology in identifying molecular pathways that traditional biochemical approaches may not reveal. Notably, the GsMTx-4 venom peptide effectively countered mechanically induced responses, particularly by inhibiting OS cell migration, without harming healthy cells. 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subjects Cell migration
Cyclic uniaxial stretch
Doxorubicin sensitivity
Grammostola mechanoToxin 4 (GsMTx-4)
Mechanobiology
Mechanosensitive ion channels
Osteosarcoma
title GsMTx-4 venom toxin antagonizes biophysical modulation of metastatic traits in human osteosarcoma cells
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