Ligia Akemi Kiyuna

Following on in silico and in vitro work, the effect of MCAD deficiency on CoA metabolism was investigated. Using a recently published HILIC-MS/MS method, free and acylated CoA species could be measured simultaneously in HepG2 MCAD-KO cells. The levels of CoA biosynthesis intermediates and total CoA was also characterised by HPLC in liver samples from MCAD-KO mice exposed to energetic stress (fasting adn cold). qPCR was applied to investigate changes in the CoA metabolism that might constitute ...

Validation of model's ability to predict oxygen consumption flux as measured usign permeabilised cells in an Oroboros Oxygraph. Generates Fig. 2A in the associated publication.

Download "Model_notebooks.rar", unzip, and run: "2, generate-model-Oroboros-validation-[needs(1)]-20221109.nb" and "4, Fig2A-Oroboros-simulation-data-[needs-(1-2-and-3)]-20221109.nb" after running "1, generate-model-20221109.nb"

Minireviews about each enzyme in the mitochindrial beta-oxidation model on which the final parameter choices (fixed-parameter model) and parameter sampling distributions (ensemble) were based.

The behaviour of a published MCAD-KO HepG2 cell line was compared to that of a wild-type HepG2 cell line in terms of the changes in acyl-CoA and acylcarnitine levels (measured by HILIC-MS/MS) and gene expression pertaining to CoA metabolism (characterised by qPCR). Additionally, the incorporation of label from stable isotope-labelled pantothenate (vitamine B5) was over 24 hours of exposure to an energetic stressor was also investigated.

MCAD-KO mice (C57BL/6J background) were exposed to three different conditions: "fed", "fasting", and "fasting + cold". In this study we determined the concentration of various CoA biosynthetic intermediates (including CoA) and the expression of CoA metabolic genes in liver tissue samples from these groups of mice.

Protein measurement used to normalised the oxygen consumption flux measured on an Oroboros oxygraph.

Measured in an Oroboros oxygraph.

L-carnitine as conserved moiety

CoA as conserved moiety

Acetyl-CoA in the mitochondrion as constant metabolite

NADH and NAD+ (Nicotinamide adinine dinucleotide) as constant values.

Oxidised and reduced electron transferring flavoprotein as constant values.

Volume per mg mitochondrial protein of mitochondrion and cytosol.

Medium-chain acyl-CoA dehydrogenase (EC 1.3.99.3)

A short description of the experiments conducted to decide on HepG2 cells as the appropriate line for the generation of an MCAD knockout. IHH, Hep3B, HepG2, and HUH-7 cells were all consdered.