Multi-omics insight into cardiac myofibril remodeling in post-prandial Burmese pythons.

Post-prandial Burmese pythons show increased myofibril tension and relaxation rates, with frequent feeding linked to slower myofibril activation, indicating significant cardiac remodeling.

• Why it matters: Understanding how digestion influences cardiac structure and function in Burmese pythons can reveal mechanisms of rapid cardiac adaptation, which may have broader implications for cardiac biology and metabolic regulation.
• What they did: The study used single-myofibril mechanics, myosin biochemical assays, RNA sequencing, proteomics, and analysis of post-translational modifications across two feeding paradigms to investigate molecular and functional changes.
• The result: Findings show increased sarcomeric mRNAs during digestion, but a decline in sarcomere protein abundance and extensive post-translational modifications, suggesting post-translational regulation underpins rapid myofibril function changes.