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Deborah A Hogan, PhD

Professor of Microbiology and Immunology

Microbiology and Immunology

Michigan State University, Ph.D., 1999
Harvard University, A.B., 1993

Dr. Hogan received her A.B. degree in Biology from Harvard University in
1993, and her Ph.D. in Microbiology from the Michigan State University in
1999. After postdoctoral work at Harvard Medical School, Dr. Hogan joined
the faculty of the Department of Microbiology and Immunology at Dartmouth Medical School in 2004.


Contact Information:

Vail Building#208
Dewey Field Rd. HB7550
Hanover NH 03755

Phone: 603-650-1252
Fax: 603-650-1318
Email: Deborah.A.Hogan@Dartmouth.edu

Professional Interests:


The interactions between different microbial species govern the activity of microbial communities, whether they be in association with a host or free-living in the environment. Microbial communities have very significant effects on human health. For example, synergistic relationships between the organisms within the human microflora confer protection against pathogens and enable the degradation of complex substrates. At the same time, many illnesses, such as respiratory and genital infections, gastroenteritis, and periodontal diseases, often involve multiple microorganisms. In the Hogan Lab, we are interested in understanding the molecular basis for such interactions by describing the mechanisms by which one microbe affects the physiology, survival, and virulence properties of another microbial species.

Our lab primarily focuses on the interactions between the Gram-negative bacterium Pseudomonas aeruginosa and the dimorphic fungus, Candida albicans. These two organisms co-exist within diverse opportunistic human infections, and clinical observations suggest that P. aeruginosa inhibits C. albicans growth. In our in vitro system, we observe that the bacteria physically attach to the fungal filaments, form biofilms on their surfaces, and kill the fungal cells. Many of the bacterial factors used to kill the fungus also participate in P. aeruginosa virulence towards humans. The fungus responds to the presence of the P. aeruginosa by reverting to a resistant yeast form. We are using genetic screening methods, analysis of defined mutants, biochemical approaches and genomic profiling techniques to better understand the bacterial and fungal factors that are involved in this relationship. By studying the interactions between microbial species, we are learning about important elements relating to the physiology and pathogenesis of the individual microbes. in addition to gaining insight in to how microbial communities function.

For more information, please visit the Hogan Lab Home Page (www.dartmouth.edu/~hoganlab).

Selected Publications:


Regulation of Pseudomonas aeruginosa-Mediated Neutrophil Extracellular Traps.
Skopelja-Gardner S, Theprungsirikul J, Lewis KA, Hammond JH, Carlson KM, Hazlett HF, Nymon A, Nguyen D, Berwin BL, Hogan DA, Rigby WFC
Front Immunol. 2019;10:1670. doi: 10.3389/fimmu.2019.01670. Epub 2019 Jul 18.
PMID: 31379861

Ethanol decreases Pseudomonas aeruginosa flagellar motility through the regulation of flagellar stators.
Lewis KA, Baker AE, Chen AI, Harty CE, Kuchma SL, O'Toole GA, Hogan DA
J Bacteriol. 2019 May 20; pii: JB.00285-19. doi: 10.1128/JB.00285-19. Epub 2019 May 20.
PMID: 31109994

Ethanol Stimulates Trehalose Production through a SpoT-DksA-AlgU-Dependent Pathway in Pseudomonas aeruginosa.
Harty CE, Martins D, Doing G, Mould DL, Clay ME, Occhipinti P, Nguyen D, Hogan DA
J Bacteriol. 2019 Jun 15;201(12) pii: e00794-18. doi: 10.1128/JB.00794-18. Epub 2019 May 22.
PMID: 30936375

Tobramycin reduces key virulence determinants in the proteome of Pseudomonas aeruginosa outer membrane vesicles.
Koeppen K, Barnaby R, Jackson AA, Gerber SA, Hogan DA, Stanton BA
PLoS One. 2019;14(1):e0211290. doi: 10.1371/journal.pone.0211290. Epub 2019 Jan 25.
PMID: 30682135

Genetic Analysis of NDT80 Family Transcription Factors in Candida albicans Using New CRISPR-Cas9 Approaches.
Min K, Biermann A, Hogan DA, Konopka JB
mSphere. 2018 Nov 21;3(6) pii: e00545-18. doi: 10.1128/mSphere.00545-18. Epub 2018 Nov 21.
PMID: 30463924

Evolution of drug resistance in an antifungal-naive chronic Candida lusitaniae infection.
Demers EG, Biermann AR, Masonjones S, Crocker AW, Ashare A, Stajich JE, Hogan DA
Proc Natl Acad Sci U S A. 2018 Nov 20;115(47):12040-12045. doi: 10.1073/pnas.1807698115. Epub 2018 Nov 2.
PMID: 30389707

Refining the Application of Microbial Lipids as Tracers of Staphylococcus aureus Growth Rates in Cystic Fibrosis Sputum.
Neubauer C, Kasi AS, Grahl N, Sessions AL, Kopf SH, Kato R, Hogan DA, Newman DK
J Bacteriol. 2018 Dec 15;200(24) pii: e00365-18. doi: 10.1128/JB.00365-18. Epub 2018 Nov 26.
PMID: 30249710

Profiling of Bacterial and Fungal Microbial Communities in Cystic Fibrosis Sputum Using RNA.
Grahl N, Dolben EL, Filkins LM, Crocker AW, Willger SD, Morrison HG, Sogin ML, Ashare A, Gifford AH, Jacobs NJ, Schwartzman JD, Hogan DA
mSphere. 2018 Aug 8;3(4) pii: e00292-18. doi: 10.1128/mSphere.00292-18. Epub 2018 Aug 8.
PMID: 30089648

PathCORE-T: identifying and visualizing globally co-occurring pathways in large transcriptomic compendia.
Chen KM, Tan J, Way GP, Doing G, Hogan DA, Greene CS
BioData Min. 2018;11:14. doi: 10.1186/s13040-018-0175-7. Epub 2018 Jul 3.
PMID: 29988723

Role of quorum sensing and chemical communication in fungal biotechnology and pathogenesis.
Barriuso J, Hogan DA, Keshavarz T, Martinez MJ
FEMS Microbiol Rev. 2018 Sep 1;42(5):627-638. doi: 10.1093/femsre/fuy022.
PMID: 29788231

View more publications on PubMed