Proteomics

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In utero pulse-injection of isotopic amino acids quantifies protein turnover rates during murine fetal development


ABSTRACT: Protein translational control is a highly regulated step in the gene expression program during development and tools to quantify protein synthesis rates in a developing fetus are lacking. Here, we developed a novel in utero approach to quantify tissue-specific translational kinetics of the nascent proteome during mouse fetal development. The translational kinetic profiles of developing organs displayed differentially expressed protein pathways and synthesis rates which correlated with known physiological changes during mouse development.

INSTRUMENT(S): Q Exactive HF-X, Orbitrap Fusion, Q Exactive

ORGANISM(S): Mus Musculus (ncbitaxon:10090)

SUBMITTER: Benjamin A. Garcia  

PROVIDER: MSV000087342 | MassIVE | Fri Apr 30 07:04:00 BST 2021

SECONDARY ACCESSION(S): PXD025742

REPOSITORIES: MassIVE

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In utero pulse injection of isotopic amino acids quantifies protein turnover rates during murine fetal development.

Baeza Josue J   Coons Barbara E BE   Lin Zongtao Z   Riley John J   Mendoza Mariel M   Peranteau William H WH   Garcia Benjamin A BA  

Cell reports methods 20240201 2


Protein translational control is critical for ensuring that the fetus develops correctly and that necessary organs and tissues are formed and functional. We developed an in utero method to quantify tissue-specific protein dynamics by monitoring amino acid incorporation into the proteome after pulse injection. Fetuses of pregnant mice were injected with isotopically labeled lysine and arginine via the vitelline vein at various embyonic days, and organs and tissues were harvested. By analyzing the  ...[more]

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