Grzegorz Wegrzyn has graduated from University of Gdansk, Poland. In 1987 he obtained an MSc degree in biology, and in 1991 Ph.D. degree in molecular genetics. His Ph.D. thesis was focused on the regulation of DNA replication in starved cells. Then (in 1991), he was a research fellow at the Department of Biochemistry, University of Nottingham Medical School (UK), where he worked on the mechanisms of gene expression regulation in bacteria. In 1992 he was a post-doctoral researcher at the Center for Molecular Genetics, University of California at San Diego (USA), where he investigated the regulation of viral DNA replication. Since 1996 he is ahead of the Department of Molecular Biology at the University of Gdansk (Poland). In his laboratory, several projects are conducted, which are focused mainly on the regulation of gene expression and DNA replication, role of oxidative stress in bacterial virulence, and mechanisms and new treatment methods of human genetic diseases. Grzegorz Wegrzyn is a co-author of over 350 scientific articles in peer-reviewed journals and over 400 communications on scientific conferences.