High abundant protein removal from rodent blood for biomarker discovery

Dominik R Haudenschild, Angela Eldridge, Pamela J Lein, Brett A. Chromy

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

In order to realize the goal of stratified and/or personalized medicine in the clinic, significant advances in the field of biomarker discovery are necessary. Adding to the abundance of nucleic acid biomarkers being characterized, additional protein biomarkers will be needed to satisfy diverse clinical needs. An appropriate source for finding these biomarkers is within blood, as it contains tissue leakage factors as well as additional proteins that reside in blood that can be linked to the presence of disease. Unfortunately, high abundant proteins and complexity of the blood proteome present significant challenges for the discovery of protein biomarkers from blood. Animal models often enable the discovery of biomarkers that can later be translated to humans. Therefore, determining appropriate sample preparation of proteomic samples in rodent models is an important research goal. Here, we examined both mouse and rat blood samples (including both serum and plasma), for appropriate high abundant protein removal techniques for subsequent gel-based proteomic experiments. We assessed four methods of albumin removal: antibody-based affinity chromatography (MARS), Cibacron® Blue-based affinity depletion (SwellGel® Blue Albumin Removal Kit), protein-based affinity depletion (ProteaPrep Albumin Depletion Kit) and TCA/acetone precipitation. Albumin removal was quantified for each method and SDS-PAGE and 2-DE gels were used to quantify the number of protein spots obtained following albumin removal. Our results suggest that while all four approaches can effectively remove high abundant proteins, antibody-based affinity chromatography is superior to the other three methods.

Original languageEnglish (US)
Pages (from-to)84-89
Number of pages6
JournalBiochemical and Biophysical Research Communications
Volume455
Issue number1-2
DOIs
StatePublished - Dec 5 2014

Fingerprint

Biomarkers
Rodentia
Blood
Albumins
Proteins
Antibody Affinity
Affinity chromatography
Affinity Chromatography
Proteomics
Blood Proteins
Gels
Precision Medicine
Thromboplastin
Proteome
Acetone
Antibodies
Nucleic Acids
Polyacrylamide Gel Electrophoresis
Animal Models
Medicine

Keywords

  • 2-D DIGE
  • Affinity chromatography
  • Albumin
  • MARS
  • Plasma
  • Proteomics

ASJC Scopus subject areas

  • Biochemistry
  • Biophysics
  • Cell Biology
  • Molecular Biology

Cite this

High abundant protein removal from rodent blood for biomarker discovery. / Haudenschild, Dominik R; Eldridge, Angela; Lein, Pamela J; Chromy, Brett A.

In: Biochemical and Biophysical Research Communications, Vol. 455, No. 1-2, 05.12.2014, p. 84-89.

Research output: Contribution to journalArticle

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