Conference Program
 
Spirochetes, Biology Of
January 31 - February 5, 2010
Ventura Beach Marriott
Ventura, CA
Chair:
Richard P. Ellen

Vice Chair:
Patricia A. Rosa

The Gordon Research Conference on the Biology of Spirochetes is devoted to discussions of leading edge fundamental research of all medically important and biologically relevant spirochetes, a unique group of Eubacteria. Many spirochetes are pathogens and cause a variety of diseases, including syphilis, Lyme borreliosis, relapsing fever borreliosis, leptospirosis, periodontal disease, digital dermatitis of cattle, and swine and human dysentery. Certain nonpathogenic spirochetes are also of great interest, such as the termite gut symbionts. The purpose of this conference is to assemble the most active and productive investigators in all areas of spirochete biology to share research advances at the frontier of the field, to develop collaborations, and to delineate common research objectives. The intention is to provide a forum for exchange of ideas among groups working on different spirochetes and an opportunity for senior graduate students, postdoctoral fellows, and new investigators in the field to develop international contacts and collaborative networks. Indeed, this conference has a proactive program to promote active participation by graduate students, postdoctoral fellows, and new investigators, especially women and other underrepresented minorities.

The conference embraces progress at the leading edge of infection and immunity as well as contemplation of theoretical biology. The application of genetic advancements, high throughput technology, and the availability of genomic sequences for Borrelia burgdorferi, B. garinii, Treponema pallidum, T. denticola, Leptospira spp. and other spirochetes are providing a wealth of new information. This progress is being integrated into ongoing studies on the biology, physiology, structure-function relationships, chemotaxis, pathogenesis, gene regulation, and immunobiology as well as tissue invasion and evasion strategies of these bacteria. For the 2010 GRC, we have increased the number of oral presentations of late-breaking research that will be selected from the abstracts submitted by new investigators. We also encourage new investigators, postdoctoral fellows, and senior graduate students in related fields such as vector-borne infections, sexually transmitted infections, and mixed anaerobic infections to consider this GRC program and to submit an application and research abstract.


Contributors

SUNDAY
4:00 pm - 8:00 pmArrival and Check-in (Office Closed 6:00 pm - 7:45 pm)
6:00 pmDinner
7:30 pm - 7:40 pmWelcome / Introductory Comments by GRC Site Staff
7:40 pm - 9:30 pmADVANCES IN GENETICS, FUNCTIONAL GENOMICS, PROTEOMICS
7:40 pm - 7:50 pm Discussion Leader: Steve Norris (University of Texas Houston Medical School, Houston, TX)
7:50 pm - 8:20 pm Lora Hooper (Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, TX)
"Gastrointestinal commensalism, infection and immunity"
8:20 pm - 8:30 pm Discussion
8:30 pm - 8:50 pm Ben Adler (Monash University, Clayton, Victoria, Australia)
"Comparative analysis of Leptospira genomes targeting loci encoding virulence properties"
8:50 pm - 9:00 pm Discussion
9:00 pm - 9:20 pm Peter Uetz (J. Craig Venter Institute, Rockville, MD)
"Protein-Protein interaction networks in Treponema pallidum and other bacteria, with a focus on motility"
9:20 pm - 9:30 pm Discussion
MONDAY
7:30 am - 8:30 amBreakfast
9:00 am - 12:30 pmGENE EXPRESSION; SPIROCHETAL PROTEIN STRUCTURE & FUNCTION
9:00 am - 9:10 am Discussion Leader: Scott Samuels (University of Montana, Missoula, MT)
9:10 am - 9:30 am Star Dunham-Ems (University of Connecticut Health Center, Farmington, CT)
"The RpoS regulon and RpoS-dependent dissemination of Borrelia burgdorferi within ticks"
9:30 am - 9:40 am Discussion
9:40 am - 10:00 am Mathieu Picardeau (Institut Pasteur, Paris, France)
"Characterization of genes involved in the helical shape of Leptospira"
10:00 am - 10:10 am Discussion
10:10 am - 10:40 am Coffee Break / Group Photo
10:40 am - 11:00 am Michael Norgard (University of Texas Southwestern Medical Center, Dallas, TX)
"Structure-function relationships of Treponema pallidum lipoproteins"
11:00 am - 11:10 am Discussion
11:10 am - 11:20 am Pricila Hauk (University of Sao Paulo, Brazil)
"Structure and calcium-binding activity of LipL32, the major surface antigen of pathogenic Leptospira spp."
11:20 am - 11:30 am Discussion
11:30 am - 11:50 am Wolf Zückert (University of Kansas, Kansas City, KS)
"Secretion of Borrelia membrane lipoproteins during the infection cycle"
11:50 am - 12:00 pm Discussion
12:00 pm - 12:30 pm General Discussion
12:30 pmLunch
1:30 pm - 4:00 pmFree Time
4:00 pm - 5:30 pmPoster Session I
6:00 pmDinner
7:30 pm - 9:30 pmTHEORETICAL BIOLOGY FORUM: Conceptual Leaps Forward, Spirochetal Research in the 21st Century
This is a special forum in which a panel of investigators who concentrate on a wide range of research questions targeting various species of spirochetes will each raise what s/he believes to be the single most significant issue in theoretical biology that is likely to dominate or impact future directions in research. The session is intended to provoke lively debate and discussion among GRC participants.
7:30 pm - 7:40 pmDiscussion Leader: Sheila Lukehart (University of Washington, Seattle, WA)
7:40 pm - 9:30 pm Panelists:
  • Linda Bockenstedt (Yale University School of Medicine, New Haven, CT)
  • Justin Radolf (University of Connecticut Health Center, Farmington, CT)
  • Caroline Cameron (University of Victoria, Victoria, BC, Canada)
  • David Haake (VA/UCLA School of Medicine, Los Angeles, CA)
TUESDAY
7:30 am - 8:30 amBreakfast
9:00 am - 12:30 pmBIOLOGY RELATED TO RISK FOR INFECTION
9:00 am - 9:10 am Discussion Leader: Jenifer Coburn (Medical College of Wisconsin, Milwaukee, WI)
9:10 am - 9:40 am Yasmine Belkaid (NIAID/NIH, Bethesda, MD)
"Functional regulatory T cells and immune modulation of infections"
9:40 am - 9:50 am Discussion
9:50 am - 10:10 am Fang-Ting Liang (Louisiana State University, Baton Rouge, LA)
"Surface lipoproteins of Borrelia burgdorferi in protection against innate defences"
10:10 am - 10:20 am Discussion
10:20 am - 11:00 am Coffee Break
11:00 am - 11:10 am Azad Eshghi (University of Victoria, BC, Canada)
"Global proteome analysis of Leptospira interrogans for potential virulence-related proteins"
11:10 am - 11:20 am Discussion
11:20 am - 11:40 am Chris Fenno (University of Michigan, Ann Arbor, MI)
"Chymotrypsin-like protease operon of Treponema denticola: expression in periodontal infections"
11:40 am - 11:50 am Discussion
11:50 am - 12:10 pm Brian Stevenson (University of Kentucky, Lexington, KY)
"Borrelia burgdorferi complement regulator-acquiring proteins"
12:10 pm - 12:20 pm Discussion
12:20 pm - 12:30 pm General Discussion
12:30 pmLunch
1:30 pm - 4:00 pmFree Time
4:00 pm - 5:30 pmPoster Session I
6:00 pmDinner
7:30 pm - 9:30 pmLATE-BREAKING RESEARCH SESSION
7:30 pm - 7:40 pmDiscussion Leaders: Jennifer Miller (North Carolina State University, Rahleigh, NC) and M. Motaleb (East Carolina University, Greenville, NC)
7:40 pm - 7:50 pm Dana Shaw (Texas A&M, College Station, TX)
"BelA, an exported lipase of the Lyme disease spirochete, Borrelia burgdorferi"
7:50 pm - 7:55 pm Discussion
7:55 pm - 8:05 pm Gustavo Cerqueira (Instituto Butantan, Sao Paulo, Brazil)
"A new methodology to identify potential virulence factors of Leptospira interrogans"
8:05 pm - 8:10 pm Discussion
8:10 pm - 8:20 pm Shelley Campeau (University of California, Irvine, CA)
"Comparative genomics of the novel large linear plasmids of relapsing fever species"
8:20 pm - 8:25 pm Discussion
8:25 pm - 8:35 pm John-Paul Lavik (University of Toledo, Toledo, OH)
"In vivo imaging of Borrelia burgdorferi with murine innate immune cells during early cutaneous Infection"
8:35 pm - 8:40 pm Discussion
8:40 pm - 8:45 pm Brief Break
8:45 pm - 8:55 pm John McDowell (Virginia Commonwealth University, Richmond, VA)
"Identification of complement resistance mechanisms of Treponema denticola and analysis of the genome wide transcriptional response to human serum: insight into the survival strategies of T. denticola"
8:55 pm - 9:00 pm Discussion
9:00 pm - 9:10 pm Lynn Sonderegger (University of Utah, Salt Lake City, UT)
"Interleukin-10 deficiency reveals a role for interferon-gamma in Lyme arthritis sevelopment"
9:10 pm - 9:15 pm Discussion
9:15 pm - 9:25 pm Kheng H. Tan (University of Melbourne, Melbourne, Australia)
"The response of Treponema denticola to Porphyromonas gingivalis"
9:25 pm - 9:30 pm Discussion
WEDNESDAY
7:30 am - 8:30 amBreakfast
9:00 am - 12:30 pmINVASION and EVASION STRATEGIES of SPIROCHETAL PATHOGENS
9:00 am - 9:10 am Discussion Leader: Nyles Charon (West Virginia University, Morgantown, WV)
9:10 am - 9:30 am Chunhao (Chris) Li (State University of New York, Buffalo NY)
"Novel mutagenesis systems and cytopathogenicity of Treponema denticola"
9:30 am - 9:40 am Discussion
9:40 am - 10:00 am Monica Embers (Tulane University, New Orleans, LA)
"Borrelia burgdorferi persistence and host antibody responses after antibiotic treatment of infected macaques"
10:00 am - 10:10 am Discussion
10:10 am - 10:40 am Coffee Break
10:40 am - 10:50 am Tara Brinck Reid (University of Washington, Seattle, WA)
"Does local immune environment affect the rate of tprK sequence change in Treponema pallidum?"
10:50 am - 11:00 am Discussion
11:00 am - 11:20 am Mollie Jewett (University of Central Florida, Orlando, FL)
"Determination of the genetic basis for Borrelia burgdorferi mammalian infectivity"
11:20 am - 11:30 am Discussion
11:30 am - 11:50 am Richard Zuerner (USDA National Animal Disease Center, Ames, IA)
"Host invasion and persistence by Leptospira"
11:50 am - 12:00 pm Discussion
12:00 pm - 12:30 pm General Discussion
12:30 pmLunch
1:30 pm - 4:00 pmFree Time
4:00 pm - 5:30 pmPoster Session II
6:00 pmDinner
7:00 pm - 7:30 pmBusiness Meeting
(Nominations for the next Vice Chair; Fill out Conference Evaluation Forms; Discuss future Site & Scheduling preferences; Election of the next Vice Chair)
7:30 pm - 9:30 pmINTERACTIONS WITH THE HOST, HOST CELLS, IMMUNE PATHWAYS
7:30 pm - 7:40 pm Discussion Leader: Gary Wormser (New York Medical College, Valhalla, NY)
7:40 pm - 8:00 pm Tara Moriarty (University of Calgary, Calgary, Alberta, Canada)
"Real-time vascular interactions of Borrelia burgdorferi in mice"
8:00 pm - 8:10 pm Discussion
8:10 pm - 8:30 pm Linden Hu (Tufts-New England Medical Center, Boston, MA)
"Innate immune pathways and cytokine induction in response to Borrelia burgdorferi"
8:30 pm - 8:40 pm Discussion
8:40 pm - 8:50 pm Adriana Cruz (CIDEIM, Cali, Colombia)
"Systemic innate immune responses during untreated secondary syphilis"
8:50 pm - 9:00 pm Discussion
9:00 pm - 9:20 pm Ana L.T.O. Nascimento (Instituto Butantan, Sao Paulo, BR)
"In vivo expression of Leptospira interrogans outer membrane proteins"
9:20 pm - 9:30 pm Discussion
THURSDAY
7:30 am - 8:30 amBreakfast
9:00 am - 12:30 pmMOLECULAR DIVERSITY, ENVIRONMENT, AND ECOLOGY
9:00 am - 9:10 am Discussion Leader: Tom Schwan (NIAID/NIH, Rocky Mountain Labs, Hamilton, MT)
9:10 am - 9:30 am Alan Barbour (University of California, Irvine, CA)
"Geographical distribution and molecular evolution of OspC, a serotype-defining protein of Borrelia burgdorferi"
9:30 am - 9:40 am Discussion
9:40 am - 10:00 am Stuart Dashper (University of Melbourne, Melbourne, Australia)
"Genome-wide expression analysis of Treponema denticola grown in biofilms"
10:00 am - 10:10 am Discussion
10:10 am - 10:40 am Coffee Break
10:40 am - 10:50 am Pierre-Olivier Hardy (University of Calgary, Calgary Alberta, Canada)
"The role of DNA replication, recombination and repair genes in antigenic switching at the vlsE locus in Borrelia burgdorferi: an essential role for the RuvAB branch migrase"
10:50 am - 11:00 am Discussion
11:00 am - 11:20 am Thad Stanton (USDA-ARS National Animal Disease Center, Ames, IA)
"Brachyspira gene transfer agents"
11:20 am - 11:30 am Discussion
11:30 am - 11:50 am Utpal Pal (University of Maryland, College Park, MD)
"Expression of Borrelia burgdorferi proteins and persistence in murine and vector hosts"
11:50 am - 12:00 pm Discussion
12:00 pm - 12:30 pm General Discussion
12:30 pmLunch
1:30 pm - 4:00 pmFree Time
4:00 pm - 5:30 pmPoster Session II
6:00 pmDinner
7:30 pm - 9:30 pmSPIROCHETAL TRANSPORT, ENVIRONMENTAL SIGNALS and METABOLISM
7:30 pm - 7:40 pm Discussion Leader: Frank Gherardini (NIAID, Rocky Mountain Labs, Hamilton, MT)
7:40 pm - 8:00 pm Richard Marconi (Virginia Commonwealth University, Richmond, VA)
"Environmental sensing and two-component signaling systems in Treponema denticola"
8:00 pm - 8:10 pm Discussion
8:10 pm - 8:30 pm Julie Boylan (NIAID, Rocky Mountain Laboratory, Montana)
"Cellular targets of reactive oxygen species in Borrelia burgdorferi"
8:30 pm - 8:40 pm Discussion
8:40 pm - 8:50 pm Miranda Lo (Monash University, Clayton, Victoria, Australia)
"Transcriptional response of Leptospira interrogans to iron limitation and characterization of a putative Fur-like protein"
8:50 pm - 9:00 pm Discussion
9:00 pm - 9:20 pm Sven Bergström (University of Umeå, Umeå, Sweden)
"Concomitant infection decreases the malaria burden but escalates relapsing fever borreliosis"
9:20 pm - 9:30 pm Discussion
FRIDAY
7:30 am - 8:30 amBreakfast
9:00 amDepart

Funding for this conference was made possible in part by Award Number R13AI085595 from the National Institute of Allergy and Infectious Diseases. The views expressed in written conference materials or publications and by speakers and moderators do not necessarily reflect the official policies of the Department of Health and Human Services; nor does mention of trade names, commercial practices, or organizations imply endorsement by the U.S. Government.

Last Updated: January 15, 2010