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Lipid exchange of apolipoprotein A-I amyloidogenic variants in reconstituted high-density lipoprotein with artificial membranes
Malmö University, Biofilms Research Center for Biointerfaces. Malmö University, Faculty of Health and Society (HS), Department of Biomedical Science (BMV).
Malmö University, Faculty of Health and Society (HS), Department of Biomedical Science (BMV). Malmö University, Biofilms Research Center for Biointerfaces.
Malmö University, Faculty of Health and Society (HS), Department of Biomedical Science (BMV). Malmö University, Biofilms Research Center for Biointerfaces.
Malmö University, Faculty of Health and Society (HS), Department of Biomedical Science (BMV). Malmö University, Biofilms Research Center for Biointerfaces.ORCID iD: 0000-0003-3458-887X
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2024 (English)In: Protein Science, ISSN 0961-8368, E-ISSN 1469-896X, Vol. 33, no 5, article id e4987Article in journal (Refereed) Published
Abstract [en]

High-density lipoproteins (HDLs) are responsible for removing cholesterol from arterial walls, through a process known as reverse cholesterol transport. The main protein in HDL, apolipoprotein A-I (ApoA-I), is essential to this process, and changes in its sequence significantly alter HDL structure and functions. ApoA-I amyloidogenic variants, associated with a particular hereditary degenerative disease, are particularly effective at facilitating cholesterol removal, thus protecting carriers from cardiovascular disease. Thus, it is conceivable that reconstituted HDL (rHDL) formulations containing ApoA-I proteins with functional/structural features similar to those of amyloidogenic variants hold potential as a promising therapeutic approach. Here we explored the effect of protein cargo and lipid composition on the function of rHDL containing one of the ApoA-I amyloidogenic variants G26R or L174S by Fourier transformed infrared spectroscopy and neutron reflectometry. Moreover, small-angle x-ray scattering uncovered the structural and functional differences between rHDL particles, which could help to comprehend higher cholesterol efflux activity and apparent lower phospholipid (PL) affinity. Our findings indicate distinct trends in lipid exchange (removal vs. deposition) capacities of various rHDL particles, with the rHDL containing the ApoA-I amyloidogenic variants showing a markedly lower ability to remove lipids from artificial membranes compared to the rHDL containing the native protein. This effect strongly depends on the level of PL unsaturation and on the particles' ultrastructure. The study highlights the importance of the protein cargo, along with lipid composition, in shaping rHDL structure, contributing to our understanding of lipid-protein interactions and their behavior.

Place, publisher, year, edition, pages
John Wiley & Sons, 2024. Vol. 33, no 5, article id e4987
Keywords [en]
amyloidogenic variants, apolipoprotein A-I, high-density lipoprotein, reconstituted HDL
National Category
Cell and Molecular Biology
Identifiers
URN: urn:nbn:se:mau:diva-66837DOI: 10.1002/pro.4987ISI: 001201388600001PubMedID: 38607188Scopus ID: 2-s2.0-85190272905OAI: oai:DiVA.org:mau-66837DiVA, id: diva2:1853446
Available from: 2024-04-22 Created: 2024-04-22 Last updated: 2024-05-20Bibliographically approved

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Correa, YubexiWaldie, SarahRoosen-Runge, FelixCárdenas, MaritéDel Giudice, Rita

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Correa, YubexiWaldie, SarahRoosen-Runge, FelixLagerstedt, Jens O.Cárdenas, MaritéDel Giudice, Rita
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