Faculty

Katharine J Bar, MD

faculty photo
Assistant Professor of Medicine
Department: Medicine
Graduate Group Affiliations

Contact information
502 D Johnson Pavilion
3610 Hamilton Walk
Philadelphia, PA 19104-6073
Office: (215) 573-8497
Fax: (215) 349-5111
Education:
BA (Biochemistry and African History, Honors)
Northwestern University, Evanston, IL, 1997.
MD
University of Iowa College of Medicine, Iowa City, IA, 2002.
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Description of Clinical Expertise

HIV care, general infectious disease care

Description of Research Expertise

We study the basic mechanisms of transmission, pathogenesis and persistence in HIV and other chronic viral infections.

Current projects include:

1. The HIV transmission bottleneck and virus phenotype in injection drug users

2. The viral dynamics of rebound viremia upon cART interruption, both in the presence and absence of treatment and curative strategies

3. The neutralization properties of SIV challenge swarms and their transmitted/founder viruses

4. The genetic signatures of Herpes Simplex Virus immune escape from vaccine pressure


Lab Personnel:

Benjamin Scheinfeld, technician
D. Brenda Salantes, graduate student

Selected Publications

O'Brien MP, Forleo-Neto E, Musser BJ, Isa F, Chan KC, Sarkar N, Bar KJ, Barnabas RV, Barouch DH, Cohen MS, Hurt CB, Burwen DR, Marovich MA, Hou P, Heirman I, Davis JD, Turner KC, Ramesh D, Mahmood A, Hooper AT, Hamilton JD, Kim Y, Purcell LA, Baum A, Kyratsous CA, Krainson J, Perez-Perez R, Mohseni R, Kowal B, DiCioccio AT, Stahl N, Lipsich L, Braunstein N, Herman G, Yancopoulos GD, Weinreich DM; Covid-19 Phase 3 Prevention Trial Team.: Subcutaneous REGEN-COV Antibody Combination to Prevent Covid-19. New England Journal of Medicine 385(13): 1185-1195, Sep 2021 Notes: doi: 10.1056/NEJMoa2109682. Epub 2021 Aug 4.

Weimin Liu, Ronnie M Russell, Frederic Bibollet-Ruche, Ashwin N Skelly, Scott Sherrill-Mix, Drew A Freeman, Regina Stoltz, Emily Lindemuth, Fang-Hua Lee, Sarah Sterrett, Katharine J Bar, Nathaniel Erdmann, Sigrid Gouma, Scott E Hensley, Thomas Ketas, Albert Cupo, Victor M Cruz Portillo, John P Moore, Paul D Bieniasz, Theodora Hatziioannou, Greer Massey, Mary-Beth Minyard, Michael S Saag, Randall S Davis, George M Shaw, William J Britt, Sixto M Leal Jr, Paul Goepfert, Beatrice H Hahn: Predictors of Nonseroconversion after SARS-CoV-2 Infection. Emerging Infectious Diseases 27(9):2454-2458(9): 2454-2458, Sep 2021 Notes: DOI: 10.3201/eid2709.211042.

CCR5-edited CD4+ T cells augment HIV-specific immunity to enable post-rebound control of HIV replication: CCR5-edited CD4+ T cells augment HIV-specific immunity to enable post-rebound control of HIV replication. Journal of Clinical Investigation 131(7), April 2021 Notes: doi: 10.1172/JCI144486.

Li H, Wang S, Lee FH, Roark RS, Murphy AI, Smith J, Zhao C, Rando J, Chohan N, Ding Y, Kim E, Lindemuth E, Bar KJ, Pandrea I, Apetrei C, Keele BF, Lifson JD, Lewis MG, Denny TN, Haynes BF, Hahn BH, Shaw GM: New SHIVs and Improved Design Strategy for Modeling HIV-1 Transmission, Immunopathogenesis, Prevention and Cure. Journal of Virology 71(21), March 2021 Notes: doi: 10.1128/JVI.00071-21.

Ziani W, Bauer A, Lu H, Wang X, Wu X, Bar KJ, Li H, Liu D, Shaw GM, Veazey RS, Xu H: Immune responses and viral persistence in SHIV.C.CH848-infected rhesus macaques. Journal of Virology 2198(20), February 2021 Notes: doi: 10.1128/JVI.02198-20.

Gondim MVP, Sherrill-Mix S, Bibollet-Ruche F, Russell RM, Trimboli S, Smith AG, Li Y, Liu W, Avitto AN, DeVoto JC, Connell J, Fenton-May AE, Pellegrino P, Williams I, Papasavvas E, Lorenzi JCC, Salantes DB, Mampe F, Monroy MA, Cohen YZ, Heath S, Saag MS, Montaner LJ, Collman RG, Siliciano JM, Siliciano RF, Plenderleith LJ, Sharp PM, Caskey M, Nussenzweig MC, Shaw GM, Borrow P, Bar KJ, Hahn BH: Heightened resistance to host type 1 interferons characterizes HIV-1 at transmission and after antiretroviral therapy interruption. Science Translational Medicine 13(576), January 2021 Notes: doi: 10.1126/scitranslmed.abd8179.

Obregon-Perko V, Bricker KM, Mensah G, Uddin F, Kumar MR, Fray EJ, Siliciano RF, Schoof N, Horner A, Mavigner M, Liang S, Vanderford T, Sass J, Chan C, Berendam SJ, Bar KJ, Shaw GM, Silvestri G, Fouda GG, Permar SR, Chahroudi A: Simian-Human Immunodeficiency Virus SHIV.C.CH505 Persistence in ART-Suppressed Infant Macaques Is Characterized by Elevated SHIV RNA in the Gut and a High Abundance of Intact SHIV DNA in Naive CD4+ T Cells. Journal of Virology 95(e01669-20), December 2020 Notes: doi: 10.1128/JVI.01669-20.

Lynn N Bertagnolli , Joseph Varriale, Sarah Sweet, Jacqueline Brockhurst , Francesco R Simonetti , Jennifer White , Subul Beg, Kenneth Lynn, Karam Mounzer, Ian Frank, Pablo Tebas, Katharine J Bar , Luis J Montaner, Robert F Siliciano, Janet D Siliciano : Autologous IgG antibodies block outgrowth of a substantial but variable fraction of viruses in the latent reservoir for HIV-1. Proceedings of the National Academy of Sciences 117(50): 32066-32077, Nov 2020.

Roark RS, Li H, Williams WB, Chug H, Mason RD, Gorman J, Wang S, Lee FH, Rando J, Bonsignori M, Hwang KK, Saunders KO, Wiehe K, Moody MA, Hraber PT, Wagh K, Giorgi EE, Russell RM, Bibollet-Ruche F, Liu W, Connell J, Smith AG, DeVoto J, Murphy AI, Smith J, Ding W, Zhao C, Chohan N, Okumura M, Rosario C, Ding Y, Lindemuth E, Bauer AM, Bar KJ, Ambrozak D, Chao CW, Chuang GY, Geng H, Lin BC, Louder MK, Nguyen R, Zhang B, Lewis MG, Raymond D, Doria-Rose NA, Schramm CA, Douek DC, Roederer M, Kepler TB, Kelsoe G, Mascola JR, Kwong PD, Korber BT, Harrison SC, Haynes BF, Hahn BH, Shaw GM. : Recapitulation of HIV-1 Env-antibody coevolution in macaques leading to neutralization breadth. Science abd2638, Nov 2020.

Berendam SJ, Styles TM, Morgan-Asiedu PK, Tenney D, Kumar A, Obregon-Perko V, Bar KJ, Saunders KO, Santra S, De Paris K, Tomaras GD, Chahroudi A, Permar SR, Amara RR, Fouda GG: Systematic assessment of antiviral potency, breadth, and synergy of triple broadly neutralizing antibody combinations against Simian-Human Immunodeficiency Viruses. Journal of Virology JVI.01667-20, Nov 2020.

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Last updated: 09/24/2021
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