Stephen Krawetz, Ph.D.

Stephen Krawetz, Ph.D.

Charlotte B. Failing Professor and Associate Director - C.S. Mott Center and Division Director for the Center for Molecular Medicine and Genetics

steve@compbio.med.wayne.edu

313-577-0765

Stephen Krawetz, Ph.D.

Academic Rank

Charlotte B. Failing Professor and Associate Director - C.S. Mott Center and Divison Director for the Center for Molecular Medicine and Genetics - Research Educator (full time)  

Courses taught

CSE 461 - Instructor.  Oakland University, Bioinformatics.

MBG – 8680 – 1401 – 003:  Lectures and Readings - Director/Founder/Instructor.  Embryo Physics.
 
PSL 7090:  Sections:  001.MBG Readings in Molecular Male Reproduction and Chromatin Systems Biology - Director/Founder/Instructor. Department of Physiology, Essays in Physiology.
 
PSL 7690:  Spermatogenesis as a Model System of Differentiation 1 - Instructor.  Department of Physiology with Concentration in the Reproductive Sciences Program (PhD), Principles of Reproductive Biology.
 
PSL 7700:  Spermatagonial Stem Cells - Instructor.  Department of Physiology with Concentration in the Reproductive Sciences Program (PhD); Stem Cell Biology.
 
MD 8840:  Molecular Basis of Development and Disease; Center for Molecular Medicine and Genetics, Department of Obstetrics and Gynecology - Coordinator/Founder/Instructor.  Year IV Senior Medical Student Elective, Wayne State University School of Medicine.
 
Mentor.  Wayne State University Medical–Research Track.
 
Lecturer.  Department of Obstetrics and Gynecology Grand Rounds, Wayne State University School of Medicine:  The Impact of the State of the Paternal Contribution to the Birth and Health of the Child.
 
Advisor/Mentor.  Wayne State University School of Medicine, Center for Molecular Medicine and Genetics PhD Program.
 
Advisor/Mentor.  Arnold Mahesan, MD, Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, St. John Hospital.
 
Advisor/Mentor.  International and National PhD Thesis Examination Committees and Visiting Students.
 
Advisor/Mentor. Wayne State University School of Medicine Medical Student Summer Research Fellowship Program.
 

Research

To achieve a Systems Biology level understanding of the genetic mechanism(s) that controls the selection of genes for development and differentiation.

Current Research Program:

We have directed our studies toward defining how gene loci are selected for expression by the mechanism termed potentiation, i.e., the opening of chromatin domains. Understanding the selective expression of our genome is fundamental to achieving the ability to reprogram our genome, the ultimate self-help therapeutic. My laboratory is using the endogenous and transgenic human and mouse protamine gene clusters as model systems of chromatin mediated differentiation. The epigenetic studies that we are pursuing extend from nuclear structure-histone modification to the role of non-coding RNAs as modulators of gene expression. Determining how these multiple levels of control interact and feedback to the genome to modulate chromatin structure and thus transcription is explored at the genome-wide systems level. We continue to use and develop state-of-the-art technologies that now include expression and ChIP based microassays alongside deep sequencing using computational capacity. The use of pipelining-grid computing and other strategies for high throughput bioinformatic analyses will help draw together our understanding of gene expression and chromatin structure. We are beginning to uncover the complex set of processes that lead to successful conception and a healthy child. These incorporate both the genetic and epigenetic impactors of the fetal onset of adult disease, including the delivery of spermatozoon RNAs at fertilization. This population of RNAs is likely to provide an essential component of early paternal genome reprogramming. By understanding the system of chromatin structure and how associations with nuclear organizers affect transcript regulation, we will provide a key to unlocking the mechanism of genome reprogramming. With the ability to use one’s own genome, this will certainly help bring self-help therapeutics, like gene therapy, from the bench to the bedside.

Publications

  • Abdallah BY, Horne SD, Stevens JB, Liu G, Ying AY, Vanderhyden B, Krawetz S.A., Gorelick R, Heng HH (2013). Single cell heterogeneity: why unstable genomes are incompatible with average profiles. Cell Cycle 12:3640-3649. PMID: 24091732
  • Mao, S., Goodrich, R.J., Hauser, R., Schrader, S.M., Chen, Z. and Krawetz, S.A. (2013) Evaluation of the effectiveness of semen storage and sperm purification methods for spermatozoa transcript profiling. Systems Biology in Reproductive Medicine 59: 287-295. PMID:23869956
  • Sendler, E., Johnson, G.D., Mao, S., Goodrich, R.J., Diamond, M.P., Hauser, R., and Krawetz, S.A. (2013) Stability, Delivery and Functions of Human Sperm RNAs at Fertilization. Nucleic Acids Research 41:4104-4117. PMID: 23471003Jodar, M., Selvaraju, S., Sendler, E., Diamond, M.P. and Krawetz, S.A. for the Reproductive Medicine Network (2013) The presence, roles and clinical use of spermatozoal RNAs Human
  • Reproduction Update 19:604-24. PMID: 23856356
  • Kaur, H., Mao, S., Shah, S., Gorski, D.H., Krawetz, S.A., Sloane, B.F. and Mattingly, R. (2013) Next-generation sequencing: a powerful tool for the discovery of molecular markers in breast ductal carcinoma in situ. Expert Review of Molecular Diagnostics. 13:151-165. PMID: 23477556

View PubMed



Other Information

Krawetz Lab