University of Utah Research Foundation

Brigham Young University

Ihc Health Services

Michael Sean Esplin

Steven William Graves

Craig Dan Thulin

Described herein are methods for evaluating the risk of preterm birth in pregnant subjects. The methods involve detecting and quantifying one or more biomarkers associated with preterm birth in a biological sample from the subject. Also described herein are isolated biomarkers and kits useful in predicting the risk of preterm birth.

Identification and quantification of biomarkers for evaluating the risk of preterm birth

Methods for proteomic analysis are provided. For example, in one aspect a method for identifying and sequencing a peptide may include fractionating a biological sample containing a peptide of interest to at least partially isolate the peptide, obtaining mass spectra of the peptide, and accelerating the peptide into a collision chamber at a plurality of discrete collision energies for a discrete period of time to form a plurality of peptide fragments for each of the plurality of discrete collision energies. The method may further include obtaining a plurality of fragmentation mass spectra from the plurality of peptide fragments for each of the plurality of discrete collision energies, summing the plurality of fragmentation mass spectra from each of the plurality of discrete collision energies to form a plurality of discrete collision energy mass spectra, one discrete collision energy mass spectra from each discrete collision energy, summing the plurality of discrete collision energy mass spectra to form a final mass spectrum for the peptide fragments, and identifying a sequence of amino acids corresponding to the peptide from the final mass spectrum.

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Salt Lake City, UT, United States of America

Michael Sean Esplin