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Accepted version

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2023-01-01

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cc-by-nc-nd (c) Elsevier Ltd., 2023
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/219033

Cooperativity and oscillations: Regulatory mechanisms of K-Ras nanoclusters

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https://doi.org/10.1016/j.compbiomed.2023.107455

Abstract

K-Ras nanoclusters (NCs) concentrate all required molecules belonging to the extracellular signal-regulated kinase (ERK) mitogen-activated protein kinase (MAPK) pathway in a small area where signaling events take place, increasing efficiency and specificity of signaling. Such nanostructures are characterized by controlled sizes and lifetimes distributions, but there is a poor understanding of the mechanisms involved in their dynamics of growth/decay. Here, a minimum computational model is presented to analyze the behavior of K-Ras NCs as cooperative dynamic structures that self-regulate their growth and decay according to their size. Indeed, the proposed model reveals that the growth and the local production of a K-Ras nanocluster depend positively on its actual size, whilst its lifetime is inversely proportional to the root of its size. The cooperative binding between the structural constituents of the NC (K-Ras proteins) induces oscillations in the size distributions of K-Ras NCs allowing them to range within controlled values, regulating the growth/decay dynamics of these NCs. Thereby, the size of a K-Ras NC is proposed as a key factor to regulate cell signaling, opening a range of possibilities to develop strategies for use in chronic diseases and cancer. Keywords: Cancer; Cell signaling; Computational model; Cooperativity; MAPK pathway; Ras nanocluster.

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Càncer, Nanoquímica

Subject (English)

Cancer, Nanochemistry

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Articles publicats en revistes (Enginyeria Electrònica i Biomèdica)
Articles publicats en revistes (Institut de Recerca Biomèdica (IRB Barcelona))

Citation

JURADO, Manuel, ZORZANO OLARTE, Antonio and CASTAÑO LINARES, Óscar. Cooperativity and oscillations: Regulatory mechanisms of K-Ras nanoclusters. Computers in Biology and Medicine. 2023. Vol. 166, num. 107455. ISSN 0010-4825. [consulted: 9 of August of 2026]. Available at: https://hdl.handle.net/2445/219033

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