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Profile

Shonna McBride PhD

  • Department of Microbiology and Immunology
    Associate Professor
  • shonna.mcbride@emory.edu
  • McBride Google Scholar
  • Shonna McBride- Linkedin
  • McBride Lab Website
  • Emory University School of Medicine
    Microbiology and Immunology
    1510 Clifton Rd., 3rd Floor RRC
Head shot of Shonna McBride

Overview

Dr. McBride joined the Emory faculty in June 2012. She received her Ph.D. degree from the University of Texas Health Science Center at San Antonio in 2005 and her Bachelor of Science degree from McNeese State University in 1999. She trained as a postdoctoral fellow in the field of bacterial pathogenesis at the Schepens Eye Research Institute of Harvard Medical School from 2005 to 2008 and at the Tufts University School of Medicine from 2008 to 2012. The focus of research in the McBride lab is to identify molecular mechanisms employed by the gastrointestinal pathogen Clostridium difficile that allow it to live within the host and spread in the environment.

Research
Research in our laboratory centers on the emerging pathogen, Clostridium difficile. C. difficile is an spore-forming and toxin-producing bacterium that causes chronic intestinal disease which is both difficult and costly to treat. The two main factors that contribute to C. difficile infections are the ability of the bacterium to form resilient spores that allow the pathogen to spread, and the inherent resistance of the bacterium to antimicrobials. Current research topics in the lab include characterizing the genetic pathways that control spore formation, identifying mechanisms of resistance to antimicrobials, and investigating therapeutics to combat C. difficile infections. Research by the McBride lab has identified novel mechanisms used by this bacterium to respond to antimicrobial peptides, such as the CprABC transporter and the ClnRAB regulatory system, and a regulator of both toxin production and sporulation, RstA.

Academic Appointment

  • Associate Professor, Department of Microbiology and Immunology, Emory University School of Medicine

Education

Degrees

  • PhD from University of Texas Health Science Center San Antonio

Research

Publications

  • Proline Stickland fermentation supports C. difficile spore maturation.
    Appl Environ Microbiol Page(s): e0055125
    06/04/2025 Authors: Carter ZA; O'Brien CE; McBride SM
  • A metabolite dehydrogenase pathway represses sporulation of Clostridioides difficile.
    Anaerobe Volume: 93 Page(s): 102971
    05/09/2025 Authors: Wetzel D; Rizvi A; Edwards AN; McBride SM
  • The Pxp Complex Detoxifies 5-Oxoproline and Promotes the Growth of Clostridioides difficile.
    Mol Microbiol
    05/08/2025 Authors: Lee CD; Rizvi A; Carter ZA; Edwards AN; McBride SM
  • KipOTIA detoxifies 5-oxoproline and promotes the growth of Clostridioides difficile.

    05/01/2024 Authors: Lee CD; Rizvi A; McBride SM
  • A conserved switch controls virulence, sporulation, and motility in C. difficile.
    PLoS Pathog Volume: 20 Page(s): e1012224
    05/01/2024 Authors: DiCandia MA; Edwards AN; Alcaraz YB; Monteiro MP; Lee CD; Vargas Cuebas G; Bagchi P; McBride SM
  • The impact of orphan histidine kinases and phosphotransfer proteins on the regulation of clostridial sporulation initiation.
    mBio Volume: 15 Page(s): e0224823
    04/10/2024 Authors: Mehdizadeh Gohari I; Edwards AN; McBride SM; McClane BA
  • The pH-responsive SmrR-SmrT system modulates C. difficile antimicrobial resistance, spore formation, and toxin production.
    Infect Immun Volume: 92 Page(s): e0046123
    03/12/2024 Authors: Wetzel D; Carter ZA; Monteiro MP; Edwards AN; Scharer CD; McBride SM
  • The pH-responsive SmrR-SmrT system modulates C. difficile antimicrobial resistance, spore formation, and toxin production.
    bioRxiv
    11/03/2023 Authors: Wetzel D; Carter ZA; Monteiro MP; Edwards AN; McBride SM
  • Glycine fermentation by C. difficile promotes virulence and spore formation, and is induced by host cathelicidin.
    Infect Immun Volume: 91 Page(s): e0031923
    10/17/2023 Authors: Rizvi A; Vargas-Cuebas G; Edwards AN; DiCandia MA; Carter ZA; Lee CD; Monteiro MP; McBride SM
  • The RgaS-RgaR two-component system promotes Clostridioides difficile sporulation through a small RNA and the Agr1 system.
    PLoS Genet Volume: 19 Page(s): e1010841
    10/01/2023 Authors: Edwards AN; McBride SM
  • The predicted acetoin dehydrogenase pathway represses sporulation of Clostridioides difficile.
    bioRxiv
    07/29/2023 Authors: Wetzel D; Rizvi A; Edwards AN; McBride SM
  • The RgaS-RgaR two-component system promotes Clostridioides difficile sporulation through a small RNA and the Agr1 system.
    bioRxiv
    06/27/2023 Authors: Edwards AN; McBride SM
  • A Conserved Switch Controls Virulence, Sporulation, and Motility in C. difficile.
    bioRxiv
    03/28/2023 Authors: DiCandia MA; Edwards AN; Lee CD; Monteiro MP; Cuebas GNV; Bagchi P; McBride SM
  • Identification of Functional Spo0A Residues Critical for Sporulation in Clostridioides difficile.
    J Mol Biol Volume: 434 Page(s): 167641
    07/15/2022 Authors: DiCandia MA; Edwards AN; Jones JB; Swaim GL; Mills BD; McBride SM
  • Three Orphan Histidine Kinases Inhibit Clostridioides difficile Sporulation.
    J Bacteriol Volume: 204 Page(s): e0010622
    05/17/2022 Authors: Edwards AN; Wetzel D; DiCandia MA; McBride SM
  • Genetic mechanisms governing sporulation initiation in Clostridioides difficile.
    Curr Opin Microbiol Volume: 66 Page(s): 32 - 38
    04/01/2022 Authors: Lee CD; Rizvi A; Edwards AN; DiCandia MA; Vargas Cuebas GG; Monteiro MP; McBride SM
  • c-di-GMP Inhibits Early Sporulation in Clostridioides difficile.
    mSphere Volume: 6 Page(s): e0091921
    12/22/2021 Authors: Edwards AN; Willams CL; Pareek N; McBride SM; Tamayo R
  • Cationic Homopolymers Inhibit Spore and Vegetative Cell Growth of Clostridioides difficile.
    ACS Infect Dis Volume: 7 Page(s): 1236 - 1247
    05/14/2021 Authors: Jones JB; Liu L; Rank LA; Wetzel D; Woods EC; Biok N; Anderson SE; Lee M-R; Liu R; Huth S
  • CD25890, a conserved protein that modulates sporulation initiation in Clostridioides difficile.
    Sci Rep Volume: 11 Page(s): 7887
    04/12/2021 Authors: Martins D; DiCandia MA; Mendes AL; Wetzel D; McBride SM; Henriques AO; Serrano M
  • The Impact of pH on Clostridioides difficile Sporulation and Physiology.
    Appl Environ Microbiol Volume: 86
    02/03/2020 Authors: Wetzel D; McBride SM
  • Strain-Dependent RstA Regulation of Clostridioides difficile Toxin Production and Sporulation.
    J Bacteriol Volume: 202
    01/02/2020 Authors: Edwards AN; Krall EG; McBride SM
  • Regulation and Anaerobic Function of the Clostridioides difficile -Lactamase.
    Antimicrob Agents Chemother Volume: 64
    12/20/2019 Authors: Sandhu BK; Edwards AN; Anderson SE; Woods EC; McBride SM
  • Phase variation of a signal transduction system controls Clostridioides difficile colony morphology, motility, and virulence.
    PLoS Biol Volume: 17 Page(s): e3000379
    10/01/2019 Authors: Garrett EM; Sekulovic O; Wetzel D; Jones JB; Edwards AN; Vargas-Cuebas G; McBride SM; Tamayo R
  • RstA Is a Major Regulator of Clostridioides difficile Toxin Production and Motility.
    mBio Volume: 10
    03/12/2019 Authors: Edwards AN; Anjuwon-Foster BR; McBride SM
  • .Clostridioides difficile.
    Trends Microbiol Volume: 26 Page(s): 1049 - 1050
    12/01/2018 Authors: Sandhu BK; McBride SM
  • Examination of the Clostridioides (Clostridium) difficile VanZ ortholog, CD1240.
    Anaerobe Volume: 53 Page(s): 108 - 115
    10/01/2018 Authors: Woods EC; Wetzel D; Mukerjee M; McBride SM
  • The C. difficile clnRAB operon initiates adaptations to the host environment in response to LL-37.
    PLoS Pathog Volume: 14 Page(s): e1007153
    08/01/2018 Authors: Woods EC; Edwards AN; Childress KO; Jones JB; McBride SM
  • Ethanolamine is a valuable nutrient source that impacts Clostridium difficile pathogenesis.
    Environ Microbiol Volume: 20 Page(s): 1419 - 1435
    04/01/2018 Authors: Nawrocki KL; Wetzel D; Jones JB; Woods EC; McBride SM
  • A Nutrient-Regulated Cyclic Diguanylate Phosphodiesterase Controls Clostridium difficile Biofilm and Toxin Production during Stationary Phase.
    Infect Immun Volume: 85
    09/01/2017 Authors: Purcell EB; McKee RW; Courson DS; Garrett EM; McBride SM; Cheney RE; Tamayo R
  • What's a SNP between friends: The influence of single nucleotide polymorphisms on virulence and phenotypes of Clostridium difficile strain 630 and derivatives.
    Virulence Volume: 8 Page(s): 767 - 781
    08/18/2017 Authors: Collery MM; Kuehne SA; McBride SM; Kelly ML; Monot M; Cockayne A; Dupuy B; Minton NP
  • Genome Sequence of a Toxin-Positive Clostridium difficile Strain Isolated from Murine Feces.
    Genome Announc Volume: 5
    04/06/2017 Authors: Etienne-Mesmin L; Chassaing B; Adekunle O; Mattei LM; Edwards AN; McBride SM; Bushman FD; Gewirtz AT
  • Determination of the in vitro Sporulation Frequency of Clostridium difficile.
    Bio Protoc Volume: 7
    02/05/2017 Authors: Edwards AN; McBride SM
  • Regulation of antimicrobial resistance by extracytoplasmic function (ECF) sigma factors.
    Microbes Infect Volume: 19 Page(s): 238 - 248
    01/01/2017 Authors: Woods EC; McBride SM
  • The Phosphotransfer Protein CD1492 Represses Sporulation Initiation in Clostridium difficile.
    Infect Immun Volume: 84 Page(s): 3434 - 3444
    12/01/2016 Authors: Childress KO; Edwards AN; Nawrocki KL; Anderson SE; Woods EC; McBride SM
  • CodY-Dependent Regulation of Sporulation in Clostridium difficile.
    J Bacteriol Volume: 198 Page(s): 2113 - 2130
    08/01/2016 Authors: Nawrocki KL; Edwards AN; Daou N; Bouillaut L; McBride SM
  • A novel regulator controls Clostridium difficile sporulation, motility and toxin production.
    Mol Microbiol Volume: 100 Page(s): 954 - 971
    06/01/2016 Authors: Edwards AN; Tamayo R; McBride SM
  • The Clostridium difficile Dlt Pathway Is Controlled by the Extracytoplasmic Function Sigma Factor V in Response to Lysozyme.
    Infect Immun Volume: 84 Page(s): 1902 - 1916
    06/01/2016 Authors: Woods EC; Nawrocki KL; Surez JM; McBride SM
  • Immunogenicity and protective efficacy of recombinant Clostridium difficile flagellar protein FliC.
    Emerg Microbes Infect Volume: 5 Page(s): e8
    02/03/2016 Authors: Ghose C; Eugenis I; Sun X; Edwards AN; McBride SM; Pride DT; Kelly CP; Ho DD
  • Immunogenicity and protective efficacy of Clostridium difficile spore proteins.
    Anaerobe Volume: 37 Page(s): 85 - 95
    02/01/2016 Authors: Ghose C; Eugenis I; Edwards AN; Sun X; McBride SM; Ho DD
  • Isolating and Purifying Clostridium difficile Spores.
    Methods Mol Biol Volume: 1476 Page(s): 117 - 128
    01/01/2016 Authors: Edwards AN; McBride SM
  • Chemical and Stress Resistances of Clostridium difficile Spores and Vegetative Cells.
    Front Microbiol Volume: 7 Page(s): 1698
    01/01/2016 Authors: Edwards AN; Karim ST; Pascual RA; Jowhar LM; Anderson SE; McBride SM
  • Effects of surotomycin on Clostridium difficile viability and toxin production in vitro.
    Antimicrob Agents Chemother Volume: 59 Page(s): 4199 - 4205
    07/01/2015 Authors: Bouillaut L; McBride S; Sorg JA; Schmidt DJ; Suarez JM; Tzipori S; Mascio C; Chesnel L; Sonenshein AL
  • An alkaline phosphatase reporter for use in Clostridium difficile.
    Anaerobe Volume: 32 Page(s): 98 - 104
    04/01/2015 Authors: Edwards AN; Pascual RA; Childress KO; Nawrocki KL; Woods EC; McBride SM
  • Synthetic polymers active against Clostridium difficile vegetative cell growth and spore outgrowth.
    J Am Chem Soc Volume: 136 Page(s): 14498 - 14504
    10/15/2014 Authors: Liu R; Surez JM; Weisblum B; Gellman SH; McBride SM
  • Antimicrobial Peptide Resistance Mechanisms of Gram-Positive Bacteria.
    Antibiotics (Basel) Volume: 3 Page(s): 461 - 492
    10/13/2014 Authors: Nawrocki KL; Crispell EK; McBride SM
  • Conserved oligopeptide permeases modulate sporulation initiation in Clostridium difficile.
    Infect Immun Volume: 82 Page(s): 4276 - 4291
    10/01/2014 Authors: Edwards AN; Nawrocki KL; McBride SM
  • Initiation of sporulation in Clostridium difficile: a twist on the classic model.
    FEMS Microbiol Lett Volume: 358 Page(s): 110 - 118
    09/01/2014 Authors: Edwards AN; McBride SM
  • Functional heterologous protein expression by genetically engineered probiotic yeast Saccharomyces boulardii.
    PLoS One Volume: 9 Page(s): e112660
    01/01/2014 Authors: Hudson LE; Fasken MB; McDermott CD; McBride SM; Kuiper EG; Guiliano DB; Corbett AH; Lamb TJ
  • Culturing and maintaining Clostridium difficile in an anaerobic environment.
    J Vis Exp Page(s): e50787
    09/14/2013 Authors: Edwards AN; Surez JM; McBride SM
  • The Clostridium difficile cpr locus is regulated by a noncontiguous two-component system in response to type A and B lantibiotics.
    J Bacteriol Volume: 195 Page(s): 2621 - 2631
    06/01/2013 Authors: Surez JM; Edwards AN; McBride SM
  • Identification of CodY targets in Bacillus anthracis by genome-wide in vitro binding analysis.
    J Bacteriol Volume: 195 Page(s): 1204 - 1213
    03/01/2013 Authors: Chteau A; van Schaik W; Joseph P; Handke LD; McBride SM; Smeets FMH; Sonenshein AL; Fouet A
  • Cyclic diguanylate inversely regulates motility and aggregation in Clostridium difficile.
    J Bacteriol Volume: 194 Page(s): 3307 - 3316
    07/01/2012 Authors: Purcell EB; McKee RW; McBride SM; Waters CM; Tamayo R
  • The dlt operon confers resistance to cationic antimicrobial peptides in Clostridium difficile.
    Microbiology (Reading) Volume: 157 Page(s): 1457 - 1465
    05/01/2011 Authors: McBride SM; Sonenshein AL
  • Genetic manipulation of Clostridium difficile.
    Curr Protoc Microbiol Volume: Chapter 9 Page(s): Unit - 9A.2
    02/01/2011 Authors: Bouillaut L; McBride SM; Sorg JA
  • Identification of a genetic locus responsible for antimicrobial peptide resistance in Clostridium difficile.
    Infect Immun Volume: 79 Page(s): 167 - 176
    01/01/2011 Authors: McBride SM; Sonenshein AL
  • Integration of metabolism and virulence by Clostridium difficile CodY.
    J Bacteriol Volume: 192 Page(s): 5350 - 5362
    10/01/2010 Authors: Dineen SS; McBride SM; Sonenshein AL
  • Genetic variation and evolution of the pathogenicity island of Enterococcus faecalis.
    J Bacteriol Volume: 191 Page(s): 3392 - 3402
    05/01/2009 Authors: McBride SM; Coburn PS; Baghdayan AS; Willems RJL; Grande MJ; Shankar N; Gilmore MS
  • Genetic diversity among Enterococcus faecalis.
    PLoS One Volume: 2 Page(s): e582
    07/04/2007 Authors: McBride SM; Fischetti VA; Leblanc DJ; Moellering RC; Gilmore MS
  • Contributions of protein structure and gene position to the compartmentalization of the regulatory proteins sigma(E) and SpoIIE in sporulating Bacillus subtilis.
    Mol Microbiol Volume: 57 Page(s): 434 - 451
    07/01/2005 Authors: McBride SM; Rubio A; Wang L; Haldenwang WG
  • Sporulation phenotype of a Bacillus subtilis mutant expressing an unprocessable but active sigmaE transcription factor.
    J Bacteriol Volume: 186 Page(s): 1999 - 2005
    04/01/2004 Authors: McBride S; Haldenwang WG
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