Summary of study ST001246

This data is available at the NIH Common Fund's National Metabolomics Data Repository (NMDR) website, the Metabolomics Workbench, https://www.metabolomicsworkbench.org, where it has been assigned Project ID PR000833. The data can be accessed directly via it's Project DOI: 10.21228/M8110J This work is supported by NIH grant, U2C- DK119886.

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Study IDST001246
Study TitleTFPa/HADHA is required for fatty acid beta-oxidation and cardiolipin re-modeling in human cardiomyocytes (part-I)
Study SummaryMitochondrial trifunctional protein deficiency, due to mutations in hydratase subunit A (HADHA), results in sudden infant death syndrome (SIDS) with no cure. To reveal the disease etiology, we generated stem cell-derived cardiomyocytes from HADHA-deficient hiPSCs and accelerated their maturation via a novel, engineered MicroRNA Maturation Cocktail (MiMaC) that upregulated the epigenetic regulator, HOPX. Fatty acid challenged MiMaC treated HADHA mutant cardiomyocytes manifested the disease phenotype: defective calcium dynamics and repolarization kinetics which resulted in a pro-arrhythmic state. Single cell RNA-seq revealed a novel cardiomyocyte developmental intermediate, based on metabolic gene expression. This intermediate gave rise to mature-like cardiomyocytes in control cells but, mutant cells transitioned to a pathological state with reduced fatty acid beta-oxidation (FAO), reduced mitochondrial proton gradient, disrupted cristae structure and defective cardiolipin remodeling. This study reveals that TFPa/HADHA, a MLCL-AT-like enzyme, is required for FAO and cardiolipin remodeling, essential for functional mitochondria in human cardiomyocytes.
Institute
University of California, Davis
Last NameShowalter
First NameMegan
AddressUC Davis Genome Center, room 1313, 451 Health Sci Drive
Emailmshowalter@ucdavis.edu
Phone5307529922
Submit Date2019-08-26
Raw Data AvailableYes
Raw Data File Type(s).raw
Analysis Type DetailLC-MS
Release Date2019-09-06
Release Version1
Megan Showalter Megan Showalter
https://dx.doi.org/10.21228/M8110J
ftp://www.metabolomicsworkbench.org/Studies/ application/zip

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Combined analysis:

Analysis ID AN002070
Analysis type MS
Chromatography type Reversed phase
Chromatography system Thermo Q Exactive HF Hybrid Quadrupole-Orbitrap
Column Waters Acquity CSH C18 (100 x 2.1mm, 1.7um)
MS Type ESI
MS instrument type Orbitrap
MS instrument name Thermo Q Exactive HF hybrid Orbitrap
Ion Mode UNSPECIFIED
Units ng

MS:

MS ID:MS001921
Analysis ID:AN002070
Instrument Name:Thermo Q Exactive HF hybrid Orbitrap
Instrument Type:Orbitrap
MS Type:ESI
MS Comments:For data acquisition a Q-Exactive HF Hybrid Quadrupole-Orbitrap Mass Spectrometer was used with the following parameters: mass range, m/z 100-1200; MS1 resolution 60,000: data-dependent MS2 resolution 15,000; NCE 20, 30, 40; 4 targets/MS1 scan; gas temperature 369°C, sheath gas flow (nitrogen), 60 units, aux gas flow 25 units, sweep gas flow 2 units; spray voltage 3.59 kV. LC-MS data processing using MS-DIAL and statistics: Untargeted lipidomic data processing was performed using MS-DIAL 104 for deconvolution, peak picking, alignment, and identification. In house m/z and retention time libraries were used in addition to MS/MS spectra databases in msp format 105. Features were reported when present in at least 50% of samples in each group. Statistical analysis was done by first normalizing data using the sum of the knowns, or mTIC normalization, to scale each sample. Normalized peak heights were then submitted to R for statistical analysis. ANOVA analysis was performed with FDR correction and post hoc testing.
Ion Mode:UNSPECIFIED
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