Wendy Thomas

Associate Professor
Vice Chair of Academic Affairs, Bioengineering

wendyt@uw.edu
Phone: (206)616-3947
Office: Foege N430P

UW Bioengineering faculty Wendy Thomas

Lab Website
How I am inventing the future of medicine
I am developing new smart medical adhesives by utilizing biological adhesive molecules that can be triggered to bind or dissociate. I am also developing and using new instruments to study the biophysics of adhesive molecules involved in infection and thrombosis.
Research Interests
Biomechanics
Mechanobiology
Molecular biophysics
Thrombosis
Infection
Computational
Adhesion
Protein Engineering
Research Description
I am interested in the regulation of biological adhesion. Our major focus is on catch bonds, which are biological adhesive bonds that are activated by mechanical force. We study the biophysics of catch bonds that are involved in blood clotting and in bacterial infections. We hope that some of these projects will help us to better understand arterial thrombosis, with the long term role of developing new drugs that will prevent heart attacks and strokes without causing so much bleeding. In other projects, we hope to develop new antiadhesive therapies for urinary tract infections and endocarditis, hoping that these new approaches will not cause antibiotic resistance. Like a nanoscale locking seatbelt, catch bonds bind when needed but allow movement at other times, which makes them exciting new tools for adhesive technology that can be used in biosensing, molecular imaging, point-of-care diagnostics, targeted drug delivery, or minimally invasive microrobotics.

To study the biophysics of catch bonds, we apply and develop engineering tools such as single molecule biophysics instrumentation. We also study the role of catch bonds in cell adhesion by using integrative simulations to relate nanoscale to microscale behaviors, and by using site-directed mutagenesis to change molecular properties so we can see how the cell behavior changes. To develop new adhesive technology, we use the biophysics tools we have developed to predict and characterize desired properties for different applications. We also use protein engineering tools including RosettaDesign and directed evolution to engineer proteins with the desired properties.

Education
PhD, Bioengineering, University of Washington, 2003
MS, Applied Mathematics, University of Washington 2003
AB, Molecular Biology, Princeton University 1987
Postdoc Information
Postdoctoral Fellow, Bioengineering, University of Washington, 2003-2004
Awards and Honors
2007-2010: BMES Board of Directors
2007: American Heart Association National Scientist Development Grant
2007: National Science Foundation CAREER Award
1999-2003: Whitaker Foundation Graduate Fellowship
UW Bioengineering Courses Taught
BIOEN 326: Solid and Gel Mechanics
BIOEN 485/585: Computational Bioengineering
Selected Publications
Liu, Y., Esser, L., Interlandi, G., Kisiela, D. I., Tchesnokova, V., Thomas, W. E., Sokurenko, E., Xia, D., Savarino, S. J., “Tight Conformational Coupling between the Domains of the Enterotoxigenic Escherichia coli Fimbrial Adhesin CfaE Regulates Binding State Transition,” J Biol Chem, 288, p. 9993-10001 (Feb 2013)

Interlandi, G, M. Ling, A.Y. Tu, D. W. Chung, and W. E. Thomas, “Structural basis of type 2A von Willebrand disease investigated by molecular dynamics simulations and experiments”PLoS One, 7, p. e45207 (Oct 2012)

Tchesnokova V., P. Aprikian, D. Kisiela, S. Gowey, N. Korotkova, W. Thomas, E. Sokurenko, “Type 1 fimbrial adhesin FimH elicits immune response which enhances cell adhesion of Escherichia coli” Infection and Immunity, 79, p. 3895-3904 (Oct 2011)

Aprikian, P, G. Interlandi, B. Kidd, I. Le Trong, V. Tchesnokova, O. Yakovenko, M. Whitfield, E. Bullitt, R. Stenkamp, W.E. Thomas, E.V. Sokurenko, “The Bacterial Fimbrial Tip Acts as a Mechanical Force Sensor” PLoS Biology, (May 2011) 9, p. e1000617

Whitfield, M, W.E. Thomas*, “A nanoadhesive composed of receptor-ligand bonds”, Journal of Adhesion, in press

W.E. Thomas*, D.E. Discher*, Prasad Shastri*, “Mechanical regulation of cells by materials and tissues”, MRS Bulletin, 35 p. 578-583 (2010).

Whitfield MJ, Ghose T, Thomas WE, “The shear-stabilized rolling behavior of E. coli examined with simulations.” Biophysical Journal, 99, p. 2470-78 (2010)

Le Trong I, Aprikian P, Kidd BA, Thomas WE, Sokurenko EV, Stenkamp RE, “Donor strand exchange and conformational changes during E. coli fimbrial formation.” Journal of Structural Biology, 172, p. 380-88 (2010)

Interlandi G, Thomas WE, “The catch bond mechanism between von Willebrand Factor and platelet surface receptors investigated by molecular dynamics simulations” Proteins 78 p. 2506-22 (Aug 2010)

Bao, G, Kamm RD, Thomas W, Hwang W, Fletcher DA, Grodzinsky AJ, Zhu C, Mofrad MRK “Molecular Biomechanics: The Molecular Basis of How Forces Regulate Cellular Function.” Cellular and Molecular Bioengineering 3 p 91-105 (June 2010)

Le Trong I, Aprikian P, Kidd BA, Forero-Shelton M, Tchesnokova V, Rajagopal P, Rodriguez V, Interlandi G, Klevit R, Vogel V, Stenkamp RE, Sokurenko EV, Thomas WE, “Structural basis for mechanical force regulation of the adhesin FimH via finger trap-like beta sheet twisting” Cell 141 p 645-55 (May 2010) (NIHMS version free text)

Tchesnokova V, McVeigh AL, Kidd B, Yakovenko O, Thomas WE, Sokurenko EV, Savarino SJ, “Shear-enhanced binding of intestinal colonization factor antigen I of enterotoxigenic Escherichia coli” Molecular Microbiology 76 p 489-502 (April 2010)

Kidd BA, Baker D*, and Thomas WE* “Computation of Conformational Coupling in Allosteric Proteins” PLoS computational Biology 5 p e1000484 (Aug 2009)

Thomas, WE*. Mechanochemistry of receptor-ligand bonds. Current Opinion in Structural Biology (2009)

Sokurenko EV*, Vogel V, Thomas WE. Catch-Bond Mechanism of Force-Enhanced Adhesion: Counterintuitive, Elusive, but … Widespread? Cell Host and Microbe 4 p 314-323 (2008)

Nilsson, L. M., Thomas, W. E., Sokurenko, E. V., Vogel*, V. Beyond induced-fit receptor-ligand interactions: structural changes that can significantly extend bond lifetimes. Structure 16 p. 1047-58 (2008)

Ronald LS, Yakovenko O, Yazvenko N, Chattopadhyay S, Aprikian P, Thomas WE, Sokurenko EV*. Adaptive mutations in the signal peptide of the type 1 fimbrial adhesin of uropathogenic Escherichia coli PNAS 105 p. 10937-42 (2008)

Thomas WE. Catch Bonds in Adhesion. Ann Rev. Biomed Eng 10: p 39-57 (2008)

Thomas WE. Vogel, V. and Sokurenko, E. Biophysics of Catch Bonds. Annual Review of Biophysics 37: p 399-416 (2008)

Yakovenko O, Sharma S, Forero M, Tchesnokova V, Aprikian P, Kidd B, Mach A, Vogel V, Thomas WE. FimH forms catch bonds that are enhanced by mechanical force due to allosteric regulation. J Biol Chem 283(17) p 11596-605 (2008)

Tchesnokova V, Aprikian P, Yakovenko O, LaRock, C, Kidd B, Vogel V, Thomas W, and Sokurenko E. Integrin-like allosteric properties of the catch-bond forming FimH adhesin of E. coli. J Biol Chem 283(12) p 7823-33 (2008)

Korotkova N, Yang Y, Le Trong I, Cota E, Demeler B, Marchant J, Thomasn WE, Stenkamp RE, Moseley SL and Matthews S, Binding of Dr adhesins of Escherichia coli to carcinoembryonic antigen triggers receptor dissociation. Molecular Microbiology 67(2) p 420-434 (2008)

Aprikian P, Tchesnokova V, Kidd B, Yakovenko O, Yarov-Yarovoy V, et al. 2007. Interdomain Interaction in the FimH Adhesin of Escherichia coli Regulates the Affinity to Mannose. J Biol Chem 282: 23437-46

Anderson, B., A. Ding, L. Nilsson, K. Kusuma, V. Tchesnokova, V. Vogel, E. Sokurenko, and W.E. Thomas, ” Weak Rolling Adhesion Enhances Bacterial Surface Colonization “. J. Bac. 189(5): 1794-802.(2007)

Thomas, W.E. , “Understanding the Counterintuitive Phenomenon of Catch Bonds”. Current Nanotechnology. (in press)

Thomas, W.E. , “For catch bonds, it all hinges on the interdomain region”. J Cell Biol. 2006 174(7): 911-3.

Forero, M., O. Yakovenko, E.V. Sokurenko, W.E. Thomas, and V. Vogel, “Uncoiling Mechanics of Escherichia coli Type I Fimbriae Are Optimized for Catch Bonds”. PLoS Biol 2006. 4(9): 1509-1516.

Nilsson, L.M., W.E. Thomas, E.V. Sokurenko, and V. Vogel, Elevated Shear Stress Protects Escherichia coli Cells Adhering to Surfaces via Catch Bonds from Detachment by Soluble Inhibitors. Appl Environ Microbiol, 2006. 72(4): p. 3005-10.

Nilsson, L., W.E. Thomas, E. Trintchina, V. Vogel, and E.V. Sokurenko “Catch bond-mediated adhesion without a shear threshold: trimannose versus monomannose interactions with the FimH adhesin of Escherichia coli.” . J Biol Chem 2006. 84(24) 16656-63.

Thomas, W.E ., M. Forero, O. Yakovenko, L. Nilsson, P. Vicini, E.V. Sokurenko, and V. Vogel, Catch Bond Model Derived from Allostery Explains Force-Activated Bacterial Adhesion. Biophys J, 2006. 90(3): p. 753-64.

Pereverzev, Y.V., O.V. Prezhdo, W.E. Thomas, and E.V. Sokurenko, Distinctive features of the biological catch bond in the jump-ramp force regime predicted by the two-pathway model. Phys Rev E Stat Nonlin Soft Matter Phys, 2005. 72(1 Pt 1): p. 010903.

Pereverzev, Y., O.V. Prezhdo, M. Forero, E. Sokurenko, and W.E. Thomas, The Two-Pathway Model for the Catch-Slip Transition in Biological Adhesion. Biophys J, 2005. 89(3): p. 1446-1454.

Thomas, W.E ., L. Nilsson, M. Forero, E.V. Sokurenko, and V. Vogel, “’Stick-and-roll’ bacterial adhesion mediated by catch-bonds” Molecular Microbiology, 2004. 53: p. 1545

M. Forero , W. E. Thomas, C. Bland, L. Nilsson, E.V. Sokurenko, and V. Vogel, “A Catch-Bond Based Smart Nano-Adhesive Sensitive to Shear Stress” Nano Letters 2004 , 4(9); p. 1593-1597

Thomas, W.E ., E. Trintchina, M. Forero, V. Vogel, and E.V. Sokurenko, “Bacterial adhesion to target cells enhanced by shear force” Cell, 2002. 109(7): p. 913-23

Krammer, A., D. Craig, W.E. Thomas, K. Schulten, and V. Vogel, “A structural model for force regulated integrin binding to fibronectin’s RGD-synergy site” Matrix Biol, 2002. 21(2): p. 139-147

Vogel, V., W.E. Thomas, D.W. Craig, A. Krammer, and G. Baneyx, “Structural insights into the mechanical regulation of molecular recognition sites” Trends Biotechnol, 2001. 19(10): p. 416-23

Thomas, W.E . and J.A. Glomset, “Affinity purification and catalytic properties of a soluble, Ca2+-independent, diacylglycerol kinase” Biochemistry, 1999. 38(11): p. 3320-6

Thomas, W.E . and J.A. Glomset, “Multiple factors influence the binding of a soluble, Ca2+-independent, diacylglycerol kinase to unilamellar phosphoglyceride vesicles” Biochemistry, 1999. 38(11): p. 3310-9

 

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