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Abstract
The HIV latent viral reservoir (LVR) remains a major challenge in the effort to find a cure for HIV. There is interest in lymphocyte-depleting agents, used in solid organ and bone marrow transplantation to reduce the LVR. This study evaluated the LVR and T cell receptor repertoire in HIV-infected kidney transplant recipients using intact proviral DNA assay and T cell receptor sequencing in patients receiving lymphocyte-depleting or lymphocyte-nondepleting immunosuppression induction therapy. CD4+ T cells and intact and defective provirus frequencies decreased following lymphocyte-depleting induction therapy but rebounded to near baseline levels within 1 year after induction. In contrast, these biomarkers were relatively stable over time in the lymphocyte-nondepleting group. The lymphocyte-depleting group had early TCRβ repertoire turnover and newly detected and expanded clones compared with the lymphocyte-nondepleting group. No differences were observed in TCRβ clonality and repertoire richness between groups. These findings suggest that, even with significant decreases in the overall size of the circulating LVR, the reservoir can be reconstituted in a relatively short period of time. These results, while from a relatively unique population, suggest that curative strategies aimed at depleting the HIV LVR will need to achieve specific and durable levels of HIV-infected T cell depletion.
Authors
Sarah E. Benner, Yolanda Eby, Xianming Zhu, Reinaldo E. Fernandez, Eshan U. Patel, Jessica E. Ruff, Feben Habtehyimer, Haley A. Schmidt, Charles S. Kirby, Sarah Hussain, Darin Ostrander, Niraj M. Desai, Sander Florman, Meenakshi M. Rana, Rachel Friedman-Moraco, Marcus R. Pereira, Shikha Mehta, Peter Stock, Alexander Gilbert, Michele I. Morris, Valentina Stosor, Sapna A. Mehta, Catherine B. Small, Karthik Ranganna, Carlos A.Q. Santos, Saima Aslam, Jennifer Husson, Maricar Malinis, Nahel Elias, Emily A. Blumberg, Brianna L. Doby, Allan B. Massie, Melissa L. Smith, Jonah Odim, Thomas C. Quinn, Gregory M. Laird, Robert F. Siliciano, Dorry L. Segev, Andrew D. Redd, Christine M. Durand, Aaron A.R. Tobian
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