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Robert Buckheit

Class 2009
Education BS, Lehigh University

Dr. Bob Siliciano

Current Position Director Sales and Business Development & Manager, Immunology and Flow Cytometry Services

ImQuest BioSciences

Research Interests

Elite Suppressors of HIV-1Infection.
The vast majority of patients who are infected with HIV-1 progress rapidly, with declining CD4+ T cell counts, and a steadily rising RNA viral load, until they succumb to AIDS. Elite suppressors maintain clinical undetectable viral loads (less than 50 RNA copies/ML) in the absence of anti-retroviral thereapy. I am working to identify host and viral factors which contribute to this unique disease phenotype. Hopefully, once these factors are better understood, we can translate that knowledge into a working, therapeutic vaccine for HIV-1 infection


A Human Immunodeficiency Virus Controller With a Large Population of CD4(+)CD8(+) Double-Positive T Cells. Durand CM, Buckheit RW 3rd, Salgado M, Pohlmeyer CW, Walker-Sperling VE, Hegarty RW, Ambinder RF, Blankson JN. Open Forum Infect Dis. 2015 Mar 20;2(2):ofv039. eCollection 2015 Apr.PMID:26380339

Comparative analysis of the capacity of elite suppressor CD4+ and CD8+ T cells to inhibit HIV-1 replication in monocyte-derived macrophages. Walker-Sperling VE, Buckheit RW 3rd, Blankson JN. J Virol. 2014 Sep 1;88(17):9789-98. Epub 2014 Jun 18.PMID:24942573

Long-term control of viral replication in a Group O, human immunodeficiency virus type 1-infected individual. Buckheit RW 3rd, Sexauer SB, Sedaghat AR, Wilke CO, Laeyendecker O, Basseth CR, Blankson JN. AIDS Res Hum Retroviruses. 2014 Jun;30(6):511-3 PMID:24798496

HIV and HCV activate the inflammasome in monocytes and macrophages via endosomal Toll-like receptors without induction of type 1 interferon. Chattergoon MA, Latanich R, Quinn J, Winter ME, Buckheit RW 3rd, Blankson JN, Pardoll D, Cox AL. PLoS Pathog. 2014 May 1;10(5):e1004082. eCollection 2014 May. PMID:24788318

HLA-B*57 elite suppressor and chronic progressor HIV-1 isolates replicate vigorously and cause CD4+ T cell depletion in humanized BLT mice. Salgado M, Swanson MD, Pohlmeyer CW, Buckheit RW 3rd, Wu J, Archin NM, Williams TM, Margolis DM, Siliciano RF, Garcia JV, Blankson JN. J Virol. 2014 Mar;88(6):3340-52. Epub 2014 Jan 3.PMID:24390323

CD8+ T cells from HLA-B*57 elite suppressors effectively suppress replication of HIV-1 escape mutants. Pohlmeyer CW, Buckheit RW 3rd, Siliciano RF, Blankson JN. Retrovirology. 2013 Dec 12;10:152. doi: 10.1186/1742-4690-10-152. PMID:24330837

Primary CD8+ T cells from elite suppressors effectively eliminate non-productively HIV-1 infected resting and activated CD4+ T cells. Buckheit RW 3rd, Siliciano RF, Blankson JN. Retrovirology. 2013 Jul 1;10:68. PMID:23816179

Inhibitory potential of subpopulations of CD8+ T cells in HIV-1-infected elite suppressors. Buckheit RW 3rd, Salgado M, Silciano RF, Blankson JN. J Virol. 2012 Dec;86(24):13679-88. Epub 2012 Oct 10. PMID:23055552

The implications of viral reservoirs on the elite control of HIV-1 infection. Buckheit RW 3rd, Salgado M, Martins KO, Blankson JN. Cell Mol Life Sci. 2013 Mar;70(6):1009-19. Epub 2012 Aug 4. Review. PMID: 22864624

Host factors dictate control of viral replication in two HIV-1 controller/chronic progressor transmission pairs. Buckheit RW 3rd, Allen TG, Alme A, Salgado M, O’Connell KA, Huculak S, Falade-Nwulia O, Williams TM, Gallant JE, Siliciano RF, Blankson JN. Nat Commun. 2012 Mar 6;3:716. PMID: 22395607

Prolonged control of replication-competent dual- tropic human immunodeficiency virus-1 following cessation of highly active antiretroviral therapy. Salgado M, Rabi SA, O’Connell KA, Buckheit RW 3rd, Bailey JR, Chaudhry AA, Breaud AR, Marzinke MA, Clarke W, Margolick JB, Siliciano RF, Blankson JN. Retrovirology. 2011 Dec 5;8:97. PMID:22141397