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Gregory Anderson, Associate Professor


  • BS:  Brigham Young University, Provo, Utah
  • PhD:  Washington University in St. Louis, St. Louis, Missouri
  • Post-Doctoral:  Dartmouth Medical School, Hanover, New Hampshire


My laboratory studies the interactions between bacterial pathogens and the host epithelium.  Specifically, we are interested in understanding how Pseudomonas aeruginosa exploits underlying lung dysfunction in individuals with cystic fibrosis (CF) to establish and maintain chronic lung infection.  After CF lung colonization, P. aeruginosa undergoes genetic regulatory changes leading to the formation of antibiotic-resistant biofilms, which persist in the lung for the life of the patient despite aggressive antimicrobial therapy.  We have developed a novel system for the development of P. aeruginosa biofilms on human CF-derived airway epithelial cells in vitro.  Using this model, we are identifying factors that impact biofilm antibiotic resistance as well as bacterial virulence in the context of CF lung infection.

We are also interested in understanding the mechanisms of biofilm formation in chonic wound infections. While a number of different pathogens have been identied in chronic wounds, P. aeruginosa is found in the most severe. We are investigating how this microbe colonizes these sites and maintains long-term infection.

The overall goal of our research is to better understand the nature of chronic infections so that new and better therapies can be developed. Toward that end, we are testing novel compounds for antimicrobial and antibiofilm activity.

Publications & Professional Activities

Chakravarty, S., Melton, C. M., Bailin, A, Yahr, T. L., and Anderson, G. G.  2017.  Pseudomonas aeruginosa Magnesium Transporter MgtE Inhibits Type III Secretion System Gene Expression by Stimulating rsmYZ Transcription.  Journal of Bacteriology  199: e00268-17.

Jashnsaz, H., Al Juboori, M., Weistuch, C., Miller, N., Nguyen, T., Meyerhoff, V., McCoy, B., Perkins, S., Wallgren, R., Ray, B. D., Tsekouras, K., Anderson, G. G., Presse S.  2017.  Hydrodynamic Hunters.  Biophysical Journal  112(6): 1282-1289.

Abdeen, S., Salim, N., Mammadova, N., Summers, C. M., Frankson, R., Ambrose, A. J., Anderson, G. G., Schultz, P. G., Horwich, A. L., Chapman, E., and Johnson, S. M.  2016.  GroEL/ES Inhibitors as Potential Antibiotics.  Bioorganic and Medicinal Chemistry Letters  26:3127-3134.

Alshalchi, S. A., and Anderson, G. G.  2015.  Expression of the Lipopolysaccharide Biosynthesis Gene lpxD Affects Biofilm Formation of Pseudomonas aeruginosa. Archives of Microbiology  197:135-145.

McCaslin, C. A., Petrusca, D. N., Poirier, C., Serban, K. A., Anderson, G. G., and Petrache I.  2015.  Impact of Alginate-Producing Pseudomonas aeruginosa on Alveolar Macrophage Apoptotic Cell Clearance.  Journal of Cystic Fibrosis  14:70-77.

Alshalchi, S. A., and Anderson, G. G.  2014.  Involvement of Stress-Related Genes polB and PA14_46880 in Biofilm Formation of Pseudomonas aeruginosa.  Infection and Immunity  82(11):4746-4757.

Akhand, S. S., Pettit, R. S., Gardner, T. E., and Anderson G. G.  2014.  New Treatments in Development for Pseudomonas aeruginosa Infections in the Lungs of Individuals with Cystic Fibrosis.  Orphan Drugs: Research and Reviews  4:71-81.

Coffey, B. M., Akhand, S. S., and Anderson, G. G.  2014.  MgtE is a Dual-Function Protein in Pseudomonas aeruginosa.  Microbiology  160:1200-1213.

Coffey, B. M. and Anderson, G. G.  2014.  Biofilm Formation in the 96-Well Microtiter Plate, p. 631-641.  In Filloux, A. and Ramos, J-L. (Eds.), Pseudomonas Methods and Protocols. Springer, New York.

Redelman, C. V., Chakravarty, S. and Anderson, G. G.  2014.  Antibiotic Treatment of Pseudomonas aeruginosa Biofilms Stimulates Expression of the Magnesium Transporter Gene mgtE.  Microbiology  160:165-178.

Anderson,G. G., Kenney, T. F., MacLeod, D. L., Henig, N. R., and O'Toole, G. A.  2013.  Eradication of Pseudomonas aeruginosa Biofilms on Cultured Airway Cells by a Fosfomycin/Tobramycin Antibiotic Combination.  Pathogens and Disease  67(1):39-45.

Redelman, C. V., Maduakolam, C., and Anderson, G. G.  2012.  Alcohol Treatment Enhances Staphylococcus aureus Biofilm Development.  FEMS Immunology and Medical Microbiology  66(3):411-418.

Redelman, C. V., Hawkins, M. A. W., Drumwright, F. R., Ransdell, B., Marrs, K., and Anderson, G. G.  2012.  Inquiry Based Examination of Chemical Disruption of Bacterial Biofilms.  Biochemistry and Molecular Biology Education  40(3):191-197.

Redelman, C. V., Marrs, K., and Anderson, G. G.  2012.  Discovering Biofilms: Inquiry Based Activities for the Classroom.  The American Biology Teacher  74(5):305-309.

Anderson, G. G.  2012.  Pseudomonas aeruginosa Biofilm Formation in the CF Lung and its Implications for Therapy, p. 153-180.  In Sriramulu, D. (Ed.), Cystic Fibrosis - Renewed Hopes Through Research.  InTech, Rejika, Croatia.

Moreau-Marquis, S., Redelman, C. V., Stanton, B. A., and Anderson, G. G.  2010.  Co-culture Models of Pseudomonas aeruginosa Biofilms Grown on Live Human Airway Cells.  Journal of Visualized Experiments  44. http://www.jove.com/video/2186/co-culture-models-of-pseudomonas-aeruginosa-biofilms-grown-on-live-human-airway-cells, doi: 10.3791/2186.

Anderson, G. G., Yahr, T. L., Lovewell, R. R., and O'Toole, G. A. 2010. The Pseudomonas aeruginosa Magnesium Transporter MgtE Inhibits Transcription of the Type III Secretion System.  Infection and Immunity 78(3):1239-1249.

Anderson, G. G., Goller, C. C., Justice, S., Hultgren, S. J., and Seed, P. C. 2010. Polysaccharide Capsule and Sialic Acid-Mediated Regulation Promote Biofilm-like Intracellular Bacterial Communities During Cystitis.  Infection and Immunity  78(3):963-975.

Moreau-Marquis, S., Bomberger, J.M., Anderson, G. G., Swiatecka-Urban, A., Ye, S., O'Toole, G. A., and Stanton, B. A.  2008. The DF508-CFTR Mutation Results in Increased Biofilm Formation by Pseudomonas aeruginosa by Increasing Iron Availability. American Journal of Physiology-Lung Cellular and Molecular Physiology 295(1):L25-37. (Selected as "Editorial Focus")

Anderson, G. G., Moreau-Marquis, S., Stanton, B. A., and O'Toole, G. A. 2008. In vitro Analysis of Tobramycin-Treated Pseudomonas aeruginosa Biofilms on Cystic Fibrosis-Derived Airway Epithelial Cells.  Infection and Immunity 76(4):1423-1433. (Selected as a "Spotlight Article" by the Editors)

Anderson, G. G., and O'Toole, G. A.  2008.  Innate and Induced Resistance Mechanisms of Bacterial Biofilms, p. 85-105.  In Romeo, T. (Ed.), Bacterial Biofilms. Current Topics in Microbiology and Immunology, vol. 322.  Springer-Verlag, Berlin.

Anderson, G. G., Lee, Y. M., Smith, C., and Hultgren, S. J.  2006.  Mechanisms of Bacterial Adhesion and Consequences of Attachment, p. 207-246.  In Nickerson, C. and Schurr, M. (Eds.), Molecular Paradigms of Infectious Disease: A Bacterial Perspective.  Springer-Verlag, New York.

Justice, S. S., Hung, C., Theriot, J. A., Fletcher, D. A., Anderson, G. G., Footer, M. J., and Hultgren, S. J. 2004. Differentiation and Developmental Pathways of Uropathogenic Escherichia coli in Urinary Tract Pathogenesis.  Proceedings of the National Academy of Sciences 101:1333-1338.

Anderson, G. G., Dodson, K. W., Hooton, T. M., and Hultgren, S. J. 2004. Intracellular Bacterial Communities of Uropathogenic Escherichia coli in Urinary Tract Pathogenesis.  Trends in Microbiology 12:424-430.

Anderson, G. G., Martin, S. M., and Hultgren, S. J. 2004. Host Subversion by Formation of Intracellular Bacterial Communities in the Urinary Tract.  Microbes and Infection 6:1094-1101.

Anderson, G. G., Palermo, J. J., Roth, R., Heuser, J., Hultgren, S. J. 2003. Intracellular Bacterial Biofilm-like Pods in Urinary Tract Infections. Science 301:105-107.

Honors, Awards and Grants

  • 2016  National Academies Education Fellow in the Life Sciences
  • 2013  Trustees Teaching Award, Indiana University
  • 2010  Young Investigator Award, Center for Biofilm Engineering, Bozeman, MT
  • Thanks for visiting my webpage!  Microbiology is a fascinating field filled with drama, intrigue, and mystery, all on a microscopic scale.  My goal is to figure out what makes microbes tick, so we can figure out how to keep from getting sick.
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