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Pàgina inicial > Articles > Articles publicats > Aβ40 Aggregation under Changeable Conditions |
Data: | 2023 |
Resum: | Homeostasis is crucial for cell function, and disturbances in homeostasis can lead to health disorders. Under normal conditions, intracellular pH is maintained between 7. 35 and 7. 45. Altered endosomal and lysosomal pH together with a general drop in brain pH are associated with the aggregation of amyloid-β-peptide (Aβ) and the development of Alzheimer's disease. Under acidic conditions, close to the Aβ isoelectric point, the absence of charges favors the formation of intermolecular contacts and promotes aggregation. Here, we analyzed how pH levels affect the aggregation of Aβ40 considering the variations in brain pH and the coexistence of different aggregated conformations. Our results suggest that different macromolecular conformations can interact with each other and influence the aggregation process. In addition, we showed that neutral pH and physiological salt concentrations favor a slow aggregation, resulting in ordered, stable fibrils, with low cytotoxic effects. Overall, we highlight the complexity of the aggregation processes occurring in different physiological and pathological environments. |
Ajuts: | Agència de Gestió d'Ajuts Universitaris i de Recerca 2022/FISDUR-0072 Ministerio de Ciencia, Innovación y Universidades FPU21/03897 Agencia Estatal de Investigación RYC2019-026752-I Agencia Estatal de Investigación PID2020-117454RA-I00 |
Drets: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió publicada |
Matèria: | Aggregation ; Amyloid-β-peptide ; Charge repulsion |
Publicat a: | International journal of molecular sciences, Vol. 24, Issue 9 (May 2023) , art. 8408, ISSN 1422-0067 |
13 p, 4.6 MB |