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Cadmium-cardiolipin disruption of respirasome assembly and redox balance through mitochondrial membrane rigidification.
J Lipid Res
January 2025
Physiology and Pathophysiology of Cells and Membranes, Medical School OWL, Bielefeld University, Bielefeld, Germany. Electronic address:
The environmental pollutant cadmium (Cd) poses a threat to human health through consumption of contaminated foodstuffs culminating in chronic nephrotoxicity. Mitochondrial dysfunction and excessive reactive oxygen species (ROS) are key to Cd cellular toxicity. Cd-lipid interactions have been less considered.
View Article and Find Full Text PDFCircadian rhythm gene cryptochrome 2 (Cry2) interacts with lipid metabolism to promote vascular aging.
Arch Gerontol Geriatr
January 2025
Department of special needs ward and general practice, Second Affiliated Hospital of Jilin University, Changchun 130041, PR China. Electronic address:
Background: Vascular aging is the basis of many chronic diseases of the aged, such as hypertension, coronary heart disease and stroke.
Objective: This study aims to deepen our understanding of the pathological mechanisms of vascular aging by combining multiple big data research methods, and reveal potential therapeutic targets and biomarkers.
Methods: WGCNA method was used to integrate the aortic transcriptome data of multiple age stages, and extract the key module and key pathway.
Redox regulation of TRIM28 facilitates neuronal ferroptosis by promoting SUMOylation and inhibiting OPTN-selective autophagic degradation of ACSL4.
Cell Death Differ
January 2025
Translational Research Centre of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China.
Ferroptosis is one of the cell death programs occurring after spinal cord injury (SCI) and is driven by iron-dependent phospholipid peroxidation. However, little is known about its underlying regulation mechanism. The present study demonstrated that lipid peroxidation was promoted in patients with SCI.
View Article and Find Full Text PDFSmall-Angle and Quasi-Elastic Neutron Scattering from Polydisperse Oligolamellar Vesicles Containing Glycolipids.
J Phys Chem Lett
January 2025
Soft Matter Biophysics, Institute for Condensed Matter Physics, TU Darmstadt, Hochschulstraße 8, 64289 Darmstadt, Germany.
Glycolipids are known to stabilize biomembrane multilayers through preferential sugar-sugar interactions that act as weak transient membrane cross-links. Here, we use small-angle and quasi-elastic neutron scattering on oligolamellar phospholipid vesicles containing defined glycolipid fractions in order to elucidate the influence of glycolipids on membrane mechanics and dynamics. Small-angle neutron scattering (SANS) reveals that the oligolamellar vesicles (OLVs) obtained by extrusion are polydisperse with regard to the number of lamellae, , which renders the interpretation of the quasi-elastic neutron spin echo (NSE) data nontrivial.
View Article and Find Full Text PDFβ-barrel proteins dictate the effect of core oligosaccharide composition on outer membrane mechanics.
Biophys J
January 2025
Department of Biology, New York University, New York, New York, 10003, USA. Electronic address:
The outer membrane is the defining structure of Gram-negative bacteria. We previously demonstrated that it is a major load-bearing component of the cell envelope and is therefore critical to the mechanical robustness of the bacterial cell. Here, to determine the key molecules and moieties within the outer membrane that underlie its contribution to cell envelope mechanics, we measured cell-envelope stiffness across several sets of mutants with altered outer-membrane sugar content, protein content, and electric charge.
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