Title
Integrated Metabolomics and Lipidomics Reveal High Accumulation of Glycerophospholipids in Human Astrocytes under the Lipotoxic Effect of Palmitic Acid and Tibolone Protection
Date Issued
01 March 2022
Access level
open access
Resource Type
journal article
Author(s)
Cabezas R.
Martin-Jiménez C.
Zuluaga M.
Pinzón A.
González J.
University of Limerick
Publisher(s)
MDPI
Abstract
Lipotoxicity is a metabolic condition resulting from the accumulation of free fatty acids in non-adipose tissues which involves a series of pathological responses triggered after chronic exposure to high levels of fatty acids, severely detrimental to cellular homeostasis and viability. In brain, lipotoxicity affects both neurons and other cell types, notably astrocytes, leading to neurodegenerative processes, such as Alzheimer (AD) and Parkinson diseases (PD). In this study, we performed for the first time, a whole lipidomic characterization of Normal Human Astrocytes cultures exposed to toxic concentrations of palmitic acid and the protective compound tibolone, to establish and identify the set of potential metabolites that are modulated under these experimental treatments. The study covered 3843 features involved in the exo-and endo-metabolome extracts obtained from astrocytes with the mentioned treatments. Through multivariate statistical analysis such as PCA (principal component analysis), partial least squares (PLS-DA), clustering analysis, and machine learning enrichment analysis, it was possible to determine the specific metabolites that were affected by palmitic acid insult, such as phosphoethanolamines, phosphoserines phosphocholines and glycerophosphocholines, with their respective metabolic pathways impact. Moreover, our results suggest the importance of tibolone in the generation of neuroprotective metabolites by astrocytes and may be relevant to the development of neurodegenerative processes.
Volume
23
Issue
5
Language
English
OCDE Knowledge area
Biología celular, Microbiología Neurociencias Bioquímica, Biología molecular
Scopus EID
2-s2.0-85125077311
PubMed ID
Source
International Journal of Molecular Sciences
ISSN of the container
16616596
DOI of the container
10.3390/ijms23052474
Source funding
Pontificia Universidad Javeriana
Bogotá Colombia and Minciencias
Colombia and Minciencias
Sponsor(s)
Funding: This work was supported by the Pontificia Universidad Javeriana, Bogotá Colombia and Minciencias, project ID 8845, 20304 and CTO 654-2020 to J.G. and R.C. This work was supported by the Pontificia Universidad Javeriana, Bogot? Colombia and Minciencias, project ID 8845, 20304 and CTO 654-2020 to J.G. and R.C.
Sources of information: Directorio de Producción Científica Scopus