Harvard Catalyst Profiles

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Laurie Elizabeth Comstock, Ph.D.


The research activities and funding listed below are automatically derived from NIH ExPORTER and other sources, which might result in incorrect or missing items. Faculty can login to make corrections and additions.
  1. R01AI132580 (BARQUERA, BLANCA) Aug 18, 2017 - Jul 31, 2021
    A new paradigm of respiration in the human gut Bacteroides
    Role: Co-Principal Investigator
  2. R01AI120633 (COMSTOCK, LAURIE E) Jun 15, 2015 - May 31, 2020
    Contact-Dependent Antagonism in Gut Bacteroidales
    Role: Principal Investigator
  3. R01AI093771 (COMSTOCK, LAURIE E) Jul 1, 2012 - Jun 30, 2016
    Secreted antimicrobial proteins of the intestinal Bacteriodales
    Role: Principal Investigator
  4. R01AI081843 (COMSTOCK, LAURIE E) Dec 1, 2009 - Nov 30, 2015
    Significance of Bacteroides fragilis polysaccharide phase variation
    Role: Principal Investigator
  5. R56AI044193 (COMSTOCK, LAURIE E) Jun 1, 2008 - May 31, 2009
    Regulation of the multiple polysaccharides of Bacteroides fragilis
    Role: Principal Investigator

Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Faculty can login to make corrections and additions.
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PMC Citations indicate the number of times the publication was cited by articles in PubMed Central, and the Altmetric score represents citations in news articles and social media. (Note that publications are often cited in additional ways that are not shown here.) Fields are based on how the National Library of Medicine (NLM) classifies the publication's journal and might not represent the specific topic of the publication. Translation tags are based on the publication type and the MeSH terms NLM assigns to the publication. Some publications (especially newer ones and publications not in PubMed) might not yet be assigned Field or Translation tags.) Click a Field or Translation tag to filter the publications.
  1. Smith WPJ, Vettiger A, Winter J, Ryser T, Comstock LE, Basler M, Foster KR. The evolution of the type VI secretion system as a disintegration weapon. PLoS Biol. 2020 05; 18(5):e3000720. PMID: 32453732.
  2. Ito T, Gallegos R, Matano LM, Butler NL, Hantman N, Kaili M, Coyne MJ, Comstock LE, Malamy MH, Barquera B. Genetic and Biochemical Analysis of Anaerobic Respiration in Bacteroides fragilis and Its Importance In Vivo. mBio. 2020 02 04; 11(1). PMID: 32019804.
  3. García-Bayona L, Comstock LE. Utilizing Ribose Compounds: How Bacteroides PUL It Off. Cell Host Microbe. 2020 01 08; 27(1):6-8. PMID: 31951823.
  4. García-Bayona L, Comstock LE. Streamlined Genetic Manipulation of Diverse Bacteroides and Parabacteroides Isolates from the Human Gut Microbiota. mBio. 2019 08 13; 10(4). PMID: 31409684.
  5. Coyne MJ, Béchon N, Matano LM, McEneany VL, Chatzidaki-Livanis M, Comstock LE. A family of anti-Bacteroidales peptide toxins wide-spread in the human gut microbiota. Nat Commun. 2019 08 01; 10(1):3460. PMID: 31371723.
  6. Shumaker AM, Laclare McEneany V, Coyne MJ, Silver PA, Comstock LE. Identification of a Fifth Antibacterial Toxin Produced by a Single Bacteroides fragilis Strain. J Bacteriol. 2019 04 15; 201(8). PMID: 30692177.
    Citations:    Fields:    
  7. Coyne MJ, Comstock LE. Type VI Secretion Systems and the Gut Microbiota. Microbiol Spectr. 2019 03; 7(2). PMID: 30825301.
  8. García-Bayona L, Comstock LE. Bacterial antagonism in host-associated microbial communities. Science. 2018 09 21; 361(6408). PMID: 30237322.
    Citations:    Fields:    Translation:HumansAnimalsCells
  9. McEneany VL, Coyne MJ, Chatzidaki-Livanis M, Comstock LE. Acquisition of MACPF domain-encoding genes is the main contributor to LPS glycan diversity in gut Bacteroides species. ISME J. 2018 12; 12(12):2919-2928. PMID: 30065309.
    Citations:    Fields:    
  10. Lee-Sarwar K, Kelly RS, Lasky-Su J, Moody DB, Mola AR, Cheng TY, Comstock LE, Zeiger RS, O'Connor GT, Sandel MT, Bacharier LB, Beigelman A, Laranjo N, Gold DR, Bunyavanich S, Savage JH, Weiss ST, Brennan PJ, Litonjua AA. Intestinal microbial-derived sphingolipids are inversely associated with childhood food allergy. J Allergy Clin Immunol. 2018 07; 142(1):335-338.e9. PMID: 29729303.
    Citations:    Fields:    
  11. Chatzidaki-Livanis M, Coyne MJ, Roelofs KG, Gentyala RR, Caldwell JM, Comstock LE. Gut Symbiont Bacteroides fragilis Secretes a Eukaryotic-Like Ubiquitin Protein That Mediates Intraspecies Antagonism. mBio. 2017 11 28; 8(6). PMID: 29184019.
    Citations: 2     Fields:    Translation:HumansCells
  12. Comstock LE. Small RNAs Repress Expression of Polysaccharide Utilization Loci of Gut Bacteroides Species. J Bacteriol. 2016 09 15; 198(18):2396-8. PMID: 27402626.
    Citations:    Fields:    Translation:Cells
  13. Roelofs KG, Coyne MJ, Gentyala RR, Chatzidaki-Livanis M, Comstock LE. Bacteroidales Secreted Antimicrobial Proteins Target Surface Molecules Necessary for Gut Colonization and Mediate Competition In Vivo. mBio. 2016 08 23; 7(4). PMID: 27555309.
    Citations: 8     Fields:    Translation:HumansAnimalsCells
  14. Rakoff-Nahoum S, Foster KR, Comstock LE. The evolution of cooperation within the gut microbiota. Nature. 2016 05 12; 533(7602):255-9. PMID: 27111508.
    Citations: 43     Fields:    Translation:HumansAnimalsCells
  15. Coyne MJ, Comstock LE. A New Pillar in Pilus Assembly. Cell. 2016 Apr 21; 165(3):520-1. PMID: 27104974.
    Citations:    Fields:    Translation:HumansCells
  16. Chatzidaki-Livanis M, Geva-Zatorsky N, Comstock LE. Bacteroides fragilis type VI secretion systems use novel effector and immunity proteins to antagonize human gut Bacteroidales species. Proc Natl Acad Sci U S A. 2016 Mar 29; 113(13):3627-32. PMID: 26951680.
    Citations: 31     Fields:    Translation:HumansAnimalsCells
  17. Coyne MJ, Roelofs KG, Comstock LE. Type VI secretion systems of human gut Bacteroidales segregate into three genetic architectures, two of which are contained on mobile genetic elements. BMC Genomics. 2016 Jan 15; 17:58. PMID: 26768901.
    Citations: 24     Fields:    Translation:HumansCells
  18. Liu S, da Cunha AP, Rezende RM, Cialic R, Wei Z, Bry L, Comstock LE, Gandhi R, Weiner HL. The Host Shapes the Gut Microbiota via Fecal MicroRNA. Cell Host Microbe. 2016 Jan 13; 19(1):32-43. PMID: 26764595.
    Citations: 58     Fields:    Translation:HumansAnimalsCells
  19. Chatzidaki-Livanis M, Comstock LE. Friend turned foe: a role for bacterial sulfatases in colitis. Cell Host Microbe. 2015 May 13; 17(5):540-1. PMID: 25974293.
    Citations:    Fields:    Translation:AnimalsCells
  20. Chatzidaki-Livanis M, Coyne MJ, Comstock LE. An antimicrobial protein of the gut symbiont Bacteroides fragilis with a MACPF domain of host immune proteins. Mol Microbiol. 2014 Dec; 94(6):1361-74. PMID: 25339613.
    Citations: 14     Fields:    Translation:HumansCells
  21. Rakoff-Nahoum S, Comstock LE. Immunology: Starve a fever, feed the microbiota. Nature. 2014 Oct 30; 514(7524):576-7. PMID: 25274298.
    Citations:    Fields:    Translation:Animals
  22. Coyne MJ, Zitomersky NL, McGuire AM, Earl AM, Comstock LE. Evidence of extensive DNA transfer between bacteroidales species within the human gut. mBio. 2014 Jun 17; 5(3):e01305-14. PMID: 24939888.
    Citations: 26     Fields:    Translation:HumansCells
  23. Rakoff-Nahoum S, Coyne MJ, Comstock LE. An ecological network of polysaccharide utilization among human intestinal symbionts. Curr Biol. 2014 Jan 06; 24(1):40-49. PMID: 24332541.
    Citations: 51     Fields:    Translation:HumansCells
  24. Wieland Brown LC, Penaranda C, Kashyap PC, Williams BB, Clardy J, Kronenberg M, Sonnenburg JL, Comstock LE, Bluestone JA, Fischbach MA. Production of a-galactosylceramide by a prominent member of the human gut microbiota. PLoS Biol. 2013 Jul; 11(7):e1001610. PMID: 23874157.
    Citations: 72     Fields:    Translation:HumansAnimalsCells
  25. Zitomersky NL, Atkinson BJ, Franklin SW, Mitchell PD, Snapper SB, Comstock LE, Bousvaros A. Characterization of adherent bacteroidales from intestinal biopsies of children and young adults with inflammatory bowel disease. PLoS One. 2013; 8(6):e63686. PMID: 23776434.
    Citations: 15     Fields:    Translation:HumansCells
  26. Coyne MJ, Fletcher CM, Chatzidaki-Livanis M, Posch G, Schaffer C, Comstock LE. Phylum-wide general protein O-glycosylation system of the Bacteroidetes. Mol Microbiol. 2013 May; 88(4):772-83. PMID: 23551589.
    Citations: 17     Fields:    Translation:Cells
  27. Posch G, Pabst M, Neumann L, Coyne MJ, Altmann F, Messner P, Comstock LE, Schäffer C. "Cross-glycosylation" of proteins in Bacteroidales species. Glycobiology. 2013 May; 23(5):568-77. PMID: 23258847.
    Citations: 10     Fields:    Translation:Cells
  28. Coyne MJ, Fletcher CM, Reinap B, Comstock LE. UDP-glucuronic acid decarboxylases of Bacteroides fragilis and their prevalence in bacteria. J Bacteriol. 2011 Oct; 193(19):5252-9. PMID: 21804000.
    Citations: 5     Fields:    Translation:Cells
  29. Zitomersky NL, Coyne MJ, Comstock LE. Longitudinal analysis of the prevalence, maintenance, and IgA response to species of the order Bacteroidales in the human gut. Infect Immun. 2011 May; 79(5):2012-20. PMID: 21402766.
    Citations: 28     Fields:    Translation:HumansCells
  30. Fletcher CM, Coyne MJ, Comstock LE. Theoretical and experimental characterization of the scope of protein O-glycosylation in Bacteroides fragilis. J Biol Chem. 2011 Feb 04; 286(5):3219-26. PMID: 21115495.
    Citations: 22     Fields:    Translation:Cells
  31. Troy EB, Carey VJ, Kasper DL, Comstock LE. Orientations of the Bacteroides fragilis capsular polysaccharide biosynthesis locus promoters during symbiosis and infection. J Bacteriol. 2010 Nov; 192(21):5832-6. PMID: 20729352.
    Citations: 4     Fields:    Translation:AnimalsCells
  32. Chatzidaki-Livanis M, Weinacht KG, Comstock LE. Trans locus inhibitors limit concomitant polysaccharide synthesis in the human gut symbiont Bacteroides fragilis. Proc Natl Acad Sci U S A. 2010 Jun 29; 107(26):11976-80. PMID: 20547868.
    Citations: 16     Fields:    Translation:HumansCells
  33. Chatzidaki-Livanis M, Coyne MJ, Comstock LE. A family of transcriptional antitermination factors necessary for synthesis of the capsular polysaccharides of Bacteroides fragilis. J Bacteriol. 2009 Dec; 191(23):7288-95. PMID: 19801412.
    Citations: 15     Fields:    Translation:Cells
  34. Comstock LE. Importance of glycans to the host-bacteroides mutualism in the mammalian intestine. Cell Host Microbe. 2009 Jun 18; 5(6):522-6. PMID: 19527880.
    Citations: 28     Fields:    Translation:HumansCells
  35. Fletcher CM, Coyne MJ, Villa OF, Chatzidaki-Livanis M, Comstock LE. A general O-glycosylation system important to the physiology of a major human intestinal symbiont. Cell. 2009 Apr 17; 137(2):321-31. PMID: 19379697.
    Citations: 55     Fields:    Translation:HumansAnimalsCells
  36. Coyne MJ, Chatzidaki-Livanis M, Paoletti LC, Comstock LE. Role of glycan synthesis in colonization of the mammalian gut by the bacterial symbiont Bacteroides fragilis. Proc Natl Acad Sci U S A. 2008 Sep 02; 105(35):13099-104. PMID: 18723678.
    Citations: 27     Fields:    Translation:AnimalsCells
  37. Belzer C, Comstock LE. Expression of phase variable surface molecules of Bacteroides species from healthy and clinical stool. J Pediatr Gastroenterol Nutr. 2008 Apr; 46 Suppl 1:E15-6. PMID: 18354319.
    Citations: 1     Fields:    Translation:HumansCells
  38. Chatzidaki-Livanis M, Coyne MJ, Roche-Hakansson H, Comstock LE. Expression of a uniquely regulated extracellular polysaccharide confers a large-capsule phenotype to Bacteroides fragilis. J Bacteriol. 2008 Feb; 190(3):1020-6. PMID: 18039760.
    Citations: 8     Fields:    Translation:HumansAnimalsCells
  39. Coyne MJ, Comstock LE. Niche-specific features of the intestinal bacteroidales. J Bacteriol. 2008 Jan; 190(2):736-42. PMID: 17993536.
    Citations: 24     Fields:    Translation:HumansCells
  40. Comstock LE. Microbiology: the inside story. Nature. 2007 Aug 02; 448(7153):542-4. PMID: 17671490.
    Citations: 1     Fields:    Translation:HumansCells
  41. Sebastian S, Dillon ST, Lynch JG, Blalock LT, Balon E, Lee KT, Comstock LE, Conlan JW, Rubin EJ, Tzianabos AO, Kasper DL. A defined O-antigen polysaccharide mutant of Francisella tularensis live vaccine strain has attenuated virulence while retaining its protective capacity. Infect Immun. 2007 May; 75(5):2591-602. PMID: 17296751.
    Citations: 38     Fields:    Translation:HumansAnimalsCells
  42. Fletcher CM, Coyne MJ, Bentley DL, Villa OF, Comstock LE. Phase-variable expression of a family of glycoproteins imparts a dynamic surface to a symbiont in its human intestinal ecosystem. Proc Natl Acad Sci U S A. 2007 Feb 13; 104(7):2413-8. PMID: 17284602.
    Citations: 25     Fields:    Translation:HumansCells
  43. Roche-Hakansson H, Chatzidaki-Livanis M, Coyne MJ, Comstock LE. Bacteroides fragilis synthesizes a DNA invertase affecting both a local and a distant region. J Bacteriol. 2007 Mar; 189(5):2119-24. PMID: 17189372.
    Citations: 7     Fields:    Translation:Cells
  44. Comstock LE, Kasper DL. Bacterial glycans: key mediators of diverse host immune responses. Cell. 2006 Sep 08; 126(5):847-50. PMID: 16959564.
    Citations: 50     Fields:    Translation:HumansAnimalsCells
  45. Coyne MJ, Reinap B, Lee MM, Comstock LE. Human symbionts use a host-like pathway for surface fucosylation. Science. 2005 Mar 18; 307(5716):1778-81. PMID: 15774760.
    Citations: 95     Fields:    Translation:HumansAnimalsCells
  46. Weinacht KG, Roche H, Krinos CM, Coyne MJ, Parkhill J, Comstock LE. Tyrosine site-specific recombinases mediate DNA inversions affecting the expression of outer surface proteins of Bacteroides fragilis. Mol Microbiol. 2004 Sep; 53(5):1319-30. PMID: 15387812.
    Citations: 16     Fields:    Translation:AnimalsCells
  47. Comstock LE, Coyne MJ. Bacteroides thetaiotaomicron: a dynamic, niche-adapted human symbiont. Bioessays. 2003 Oct; 25(10):926-9. PMID: 14505359.
    Citations: 21     Fields:    Translation:HumansCells
  48. Coyne MJ, Weinacht KG, Krinos CM, Comstock LE. Mpi recombinase globally modulates the surface architecture of a human commensal bacterium. Proc Natl Acad Sci U S A. 2003 Sep 02; 100(18):10446-51. PMID: 12915735.
    Citations: 36     Fields:    Translation:HumansCells
  49. Krinos CM, Coyne MJ, Weinacht KG, Tzianabos AO, Kasper DL, Comstock LE. Extensive surface diversity of a commensal microorganism by multiple DNA inversions. Nature. 2001 Nov 29; 414(6863):555-8. PMID: 11734857.
    Citations: 91     Fields:    Translation:HumansCells
  50. Coyne MJ, Tzianabos AO, Mallory BC, Carey VJ, Kasper DL, Comstock LE. Polysaccharide biosynthesis locus required for virulence of Bacteroides fragilis. Infect Immun. 2001 Jul; 69(7):4342-50. PMID: 11401972.
    Citations: 36     Fields:    Translation:AnimalsCells
  51. Kalka-Moll WM, Wang Y, Comstock LE, Gonzalez SE, Tzianabos AO, Kasper DL. Immunochemical and biological characterization of three capsular polysaccharides from a single Bacteroides fragilis strain. Infect Immun. 2001 Apr; 69(4):2339-44. PMID: 11254591.
    Citations: 11     Fields:    Translation:AnimalsCells
  52. Coyne MJ, Kalka-Moll W, Tzianabos AO, Kasper DL, Comstock LE. Bacteroides fragilis NCTC9343 produces at least three distinct capsular polysaccharides: cloning, characterization, and reassignment of polysaccharide B and C biosynthesis loci. Infect Immun. 2000 Nov; 68(11):6176-81. PMID: 11035722.
    Citations: 19     Fields:    Translation:HumansAnimalsCells
  53. Comstock LE, Pantosti A, Kasper DL. Genetic diversity of the capsular polysaccharide C biosynthesis region of Bacteroides fragilis. Infect Immun. 2000 Nov; 68(11):6182-8. PMID: 11035723.
    Citations: 12     Fields:    Translation:Cells
  54. Comstock LE, Coyne MJ, Tzianabos AO, Kasper DL. Interstrain variation of the polysaccharide B biosynthesis locus of Bacteroides fragilis: characterization of the region from strain 638R. J Bacteriol. 1999 Oct; 181(19):6192-6. PMID: 10498737.
    Citations: 12     Fields:    Translation:Cells
  55. Comstock LE, Coyne MJ, Tzianabos AO, Pantosti A, Onderdonk AB, Kasper DL. Analysis of a capsular polysaccharide biosynthesis locus of Bacteroides fragilis. Infect Immun. 1999 Jul; 67(7):3525-32. PMID: 10377135.
    Citations: 24     Fields:    Translation:AnimalsCells
  56. Losonsky GA, Lim Y, Motamedi P, Comstock LE, Johnson JA, Morris JG, Tacket CO, Kaper JB, Levine MM. Vibriocidal antibody responses in North American volunteers exposed to wild-type or vaccine Vibrio cholerae O139: specificity and relevance to immunity. Clin Diagn Lab Immunol. 1997 May; 4(3):264-9. PMID: 9144361.
    Citations: 15     Fields:    Translation:HumansCells
  57. Comstock LE, Johnson JA, Michalski JM, Morris JG, Kaper JB. Cloning and sequence of a region encoding a surface polysaccharide of Vibrio cholerae O139 and characterization of the insertion site in the chromosome of Vibrio cholerae O1. Mol Microbiol. 1996 Feb; 19(4):815-26. PMID: 8820651.
    Citations: 47     Fields:    Translation:Cells
  58. Tacket CO, Losonsky G, Nataro JP, Comstock L, Michalski J, Edelman R, Kaper JB, Levine MM. Initial clinical studies of CVD 112 Vibrio cholerae O139 live oral vaccine: safety and efficacy against experimental challenge. J Infect Dis. 1995 Sep; 172(3):883-6. PMID: 7658089.
    Citations: 43     Fields:    Translation:HumansCellsCTClinical Trials
  59. Fasano A, Fiorentini C, Donelli G, Uzzau S, Kaper JB, Margaretten K, Ding X, Guandalini S, Comstock L, Goldblum SE. Zonula occludens toxin modulates tight junctions through protein kinase C-dependent actin reorganization, in vitro. J Clin Invest. 1995 Aug; 96(2):710-20. PMID: 7635964.
    Citations: 74     Fields:    Translation:HumansAnimalsCells
  60. Comstock LE, Maneval D, Panigrahi P, Joseph A, Levine MM, Kaper JB, Morris JG, Johnson JA. The capsule and O antigen in Vibrio cholerae O139 Bengal are associated with a genetic region not present in Vibrio cholerae O1. Infect Immun. 1995 Jan; 63(1):317-23. PMID: 7528734.
    Citations: 38     Fields:    Translation:Cells
  61. Faruque SM, Comstock L, Kaper JB, Albert MJ. Distribution of Zonula occludens toxin (zot) gene among clinical isolates of Vibrio cholerae O1 from Bangladesh and Africa. J Diarrhoeal Dis Res. 1994 Sep; 12(3):222-4. PMID: 7868831.
    Citations: 8     Fields:    Translation:HumansCells
  62. Comstock LE, Fikrig E, Shoberg RJ, Flavell RA, Thomas DD. A monoclonal antibody to OspA inhibits association of Borrelia burgdorferi with human endothelial cells. Infect Immun. 1993 Feb; 61(2):423-31. PMID: 7678585.
    Citations: 27     Fields:    Translation:HumansAnimalsCells
  63. Comstock LE, Thomas DD. Characterization of Borrelia burgdorferi invasion of cultured endothelial cells. Microb Pathog. 1991 Feb; 10(2):137-48. PMID: 1890951.
    Citations: 27     Fields:    Translation:HumansCells
  64. Comstock LE, Thomas DD. Penetration of endothelial cell monolayers by Borrelia burgdorferi. Infect Immun. 1989 May; 57(5):1626-8. PMID: 2707862.
    Citations: 63     Fields:    Translation:HumansCells
  65. Thomas DD, Comstock LE. Interaction of Lyme disease spirochetes with cultured eucaryotic cells. Infect Immun. 1989 Apr; 57(4):1324-6. PMID: 2925254.
    Citations: 49     Fields:    Translation:HumansCells
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Funded by the NIH National Center for Advancing Translational Sciences through its Clinical and Translational Science Awards Program, grant number UL1TR002541.