Edward L. Krug, Ph.D.
Departmental Mentoring Champion
Associate Dean for Postdoctoral Affairs
Room 101, BioEngineering Building
Office: (843) 876-2404
FAX: (843) 876-2416
Education:BS Biology Indiana State Univ. 1974
MS Biochemistry Purdue University 1977
PhD Biochemistry Purdue University 1983
Postdoctoral Fellow at Texas Tech Univ. and Medical College of Wisconsin
I was trained in a wide variety of technologies as a protein biochemist in graduate school, which served as the foundation of my postdoctoral work on identifying extracellular signals that induce transformation events in early heart morphogenesis. By using complementary protein and molecular approaches we were able to identify trace levels of an extracellular aggregate of proteins, what are now known to be secretory vesicles termed “exosomes”, that induce the formation of valvuloseptal precursors in the embryonic heart. As part of an NIH funded Cardiovascular Proteomics Center our group developed novel technologies for characterizing dynamics of the embryonic heart proteome. This allowed us to use a platform of methodologies with complementary strengths, e.g., 2D difference-in-gel electrophoresis (DIGE) and the MS-MS based method of isobaric tag for relative and absolute quantitation (iTRAQ) to compare posttranslational modifications and differential composition of protein extracts, and MALDI-TOF imaging of tissue sections to discover spatial changes in protein distribution. We also developed a bioinformatics tool for staging embryonic hearts based on their MALDI-TOF profiles via a Random Forest algorithm. Current projects involve using these approaches to assess subtle changes in the proteome that precede overt morphological defects in the developing heart and cochlea in response to potential teratogens, gene knockout models and aging.
- Lang H, Xing Y, Brown LN, Samuvel DJ, Panganiban CH, Havens LT, Balasubramanian S, Wegner M, Krug EL, Barth JL. Neural stem/progenitor cell properties of glial cells in the adult mouse auditory nerve. Sci Rep. 2015, Aug 26;5:13383 PMID: 26307538 PMCID: PMC4549618
- Kruger R, Rasmussen LM, Argraves WS, Eugen-Olsen J, Nielsen OW, Blyme A, Willenheimer R, Wachtell K, Olsen MH. Extracellular matrix biomarker, fibulin-1, is closely related to NT-proBNP and soluble urokinase plasminogen activator receptor in patients with aortic valve stenosis (the SEAS study). PLoS One. 2014, 9(7):e101522 PMID: 25014213 PMCID: PMC4094491
- Burns TA, Dours-Zimmermann MT, Zimmermann DR, Krug EL, Comte-Walters S, Reyes L, Davis MA, Schey KL, Schwacke JH, Kern CB, Mjaatvedt CH. Imbalanced expression of Vcan mRNA splice form proteins alters heart morphology and cellular protein profiles. PLoS One. 2014, 9(2):e89133 PMID: 24586547 PMCID: PMC3930639
- Lang, H, M Li, LA Kilpatrick, J Zhu, DJ Samuvel, EL Krug, and JC Goddard (2011). Sox2 up-regulation and glial cell proliferation following degeneration of spinalganglion neurons in the adult mouse inner ear. J Assoc Res Otolaryngol 12:151-171.
- Grey, AC, AK Gelasco, J Section, RA Moreno-Rodriguez, EL KRUG, and KL Schey (2010). Molecular morphology of the chick heart visualized by MALDI imaging mass spectrometry. Anat Rec 293:821-828.
- Schwacke, JH, EG Hill, EL KRUG, S Comte-Walters, and KL Schey (2009). iQuantitator: A tool for protein expression inference using iTRAQ. BMC Bioinformatics 10:342
- Mishima N, Hoffman S, Hill EG, Krug EL. Chick embryos exposed to trichloroethylene in an ex ovo culture model show selective defects in early endocardial cushion tissue formation. Birth Defects Res A Clin Mol Teratol. 2006 Jul;76(7):517-27.
- Moreno-Rodriguez RA, Krug EL, Reyes L, Villavicencio L, Mjaatvedt CH, Markwald RR. Bidirectional fusion of the heart-forming fields in the developing chick embryo. Dev Dyn. 2006 Jan;235(1):191-202.
- Almeida JS, Stanislaus R, Krug E, Arthur JM (2005). Normalization and analysis of residual variation in two-dimensional gel electrophoresis for quantitative differential proteomics. Proteomics 5: 1242-1249.
- Kern CB, Hoffman S, Moreno R, Damon BJ, Norris RA, Krug EL, Markwald RR, Mjaatvedt CH. Immunolocalization of chick periostin protein in the developing heart. Anat Rec A Discov Mol Cell Evol Biol. 2005 May;284(1):415-23.
- de la Cruz MV, Markwald RR, Krug EL, Rumenoff L, Sanchez Gomez C, Sadowinski S, Galicia TD, Gomez F, Salazar Garcia M, Villavicencio Guzman L, Reyes Angeles L, Moreno-Rodriguez RA. Living morphogenesis of the ventricles and congenital pathology of their component parts. Cardiol Young. 2001 Nov;11(6):588-600. Review.
- Bianchi LM, Liu H, Krug EL, Capehart AA. Selective and transient expression of a native chondroitin sulfate epitope in Deiters' cells, pillar cells, and the developing tectorial membrane. Anat Rec. 1999 Sep 1;256(1):64-71.
- Capehart AA, Mjaatvedt CH, Hoffman S, Krug EL. Dynamic expression of a native chondroitin sulfate epitope reveals microheterogeneity of extracellular matrix organization in the embryonic chick heart. Anat Rec. 1999 Feb 1;254(2):181-95.
- Nakajima Y, Yamagishi T, Nakamura H, Markwald RR, Krug EL. An autocrine function for transforming growth factor beta 3 in the atrioventricular endocardial cushion tissue formation during chick heart development. Ann N Y Acad Sci. 1998 Oct 23;857:272-5.
- Nakajima Y, Yamagishi T, Nakamura H, Markwald RR, Krug EL. An autocrine function for transforming growth factor (TGF)-beta3 in the transformation of atrioventricular canal endocardium into mesenchyme during chick heart development. Dev Biol. 1998 Feb 1;194(1):99-113.
- Capehart AA, Wienecke MM, Kitten GT, Solursh M, Krug EL. Production of a monoclonal antibody by in vitro immunization that recognizes a native chondroitin sulfate epitope in the embryonic chick limb and heart. J Histochem Cytochem. 1997 Nov;45(11):1567-81.
- Moreno-Rodriguez RA, de la Cruz MV, Krug EL. Temporal and spatial asymmetries in the initial distribution of mesenchyme cells in the atrioventricular canal cushions of the developing chick heart. Anat Rec. 1997 May;248(1):84-92.