Abstract: Disclosed is a method for determining the turnover rate of biomolecules in a subject, which include administering to the subject, 2H2O in an amount sufficient to label biomolecules in the subject with 2H. Samples are collected from the subject at one or more time points and isotopomers are detected for the labeled biomolecules in the samples. The fractional abundance is determined for the isotopomers of the biomolecules in the samples and the biomolecule turnover rates of the one or more labeled biomolecules is determined based on the fractional abundance of the isotopomers. A computer-implemented method is also disclosed for determining the turnover rate of one or more biomolecules in subject. In certain other embodiments, a system for determining protein turnover rates in a subject is also provided. Also provided in certain embodiments is a computer program product for determining protein turnover rates in a subject.

Abstract: Disclosed is a method for determining the turnover rate of biomolecules in a subject, which include administering to the subject, 2H20 in an amount sufficient to label biomolecules in the subject with 2H. Samples are collected from the subject at one or more time points and isotopomers are detected for the labeled biomolecules in the samples. The fractional abundance is determined for the isotopomers of the biomolecules in the samples and the biomolecule turnover rates of the one or more labeled biomolecules is determined based on the fractional abundance of the isotopomers. A computer-implemented method is also disclosed for determining the turnover rate of one or more biomolecules in subject. In certain other embodiments, a system for determining protein turnover rates in a subject is also provided. Also provided in certain embodiments is a computer program product for determining protein turnover rates in a subject.