FAMetA

FAMetA analyzes fatty acid metabolism by using stable 13C isotope tracer mass spectrometry data to quantify import, de novo lipogenesis, elongation, and desaturation from mass isotopologue profiles.

Key Features:

• Isotopologue analysis: Uses 13C mass isotopologue profiles derived from stable isotope tracer experiments and mass spectrometry (MS) to inform FA metabolic measurements.
• Flux estimation: Estimates fatty acid import, de novo lipogenesis, elongation, and desaturation parameters.
• Metabolic reconstruction: Reconstructs fatty acid biosynthetic pathways and supports identification of novel fatty acids by integrating perturbations with inhibitors such as FASN, SCD1, and FADS2.
• Graphical outputs: Produces graphical representations of FA biosynthetic routes and isotopologue distributions.
• Workflow integration: Implements a computational workflow for processing MS isotopologue data from raw input to interpretation and visualization.
• Implementation: Available as an R package for computational analysis.

Scientific Applications:

• Metabolic reprogramming analysis: Characterizes cellular reprogramming of fatty acid metabolism under different experimental conditions.
• Novel fatty acid identification: Enables identification of previously unreported fatty acids through reconstructed synthesis pathways and inhibitor perturbations.
• Experimental contexts: Applicable to both in vitro and in vivo stable isotope tracer MS experiments.
• Biomedical and nutritional research: Supports studies of nutrition, disease mechanisms, and therapeutic interventions involving fatty acid metabolism.

Methodology:

Processes 13C mass isotopologue profiles from stable isotope tracer MS to estimate import, de novo lipogenesis, elongation, and desaturation, performs metabolic reconstruction incorporating inhibitor perturbations (FASN, SCD1, FADS2), and is implemented as an R package.