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Ongoing HIV Replication During ART Reconsidered.

Mary F Kearney1, Ann Wiegand1, Wei Shao2

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|October 13, 2018
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Summary
This summary is machine-generated.

This study challenges claims of ongoing HIV replication during antiretroviral therapy (ART). Analysis of HIV RNA and DNA sequences suggests the data does not support conclusions of sustained viral activity or reservoir maintenance on ART.

Keywords:
HIV evolutionHIV reservoirclonal expansionlymph nodesongoing replication on ARTsingle-genome sequencing

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Area of Science:

  • Virology
  • Immunology
  • Molecular Biology

Background:

  • Antiretroviral therapy (ART) aims to suppress HIV replication.
  • Previous studies suggested ongoing HIV replication in lymph nodes despite ART, potentially maintaining the viral reservoir.

Purpose of the Study:

  • To re-analyze HIV RNA and DNA sequences from a previously published study.
  • To evaluate the validity of claims regarding ongoing HIV replication and reservoir maintenance during ART.

Main Methods:

  • Analysis of HIV RNA and proviral DNA sequences from plasma, lymph nodes (LN), and peripheral blood mononuclear cells (PBMC).
  • Assessment of sequence diversity and divergence over a 6-month period following ART initiation.
  • Accounting for polymerase chain reaction (PCR) resampling and viral hypermutation.

Main Results:

  • The analyzed dataset was limited, with a median of only 5 unique RNA or DNA sequences per sample after accounting for PCR and hypermutation.
  • Few proviral DNA sequences remaining at 3 and 6 months on ART showed no increased diversity or divergence compared to pre-ART sequences.
  • The data did not support the conclusion of ongoing HIV replication in LN during ART.

Conclusions:

  • The claims of ongoing HIV replication in lymph nodes despite ART are not adequately supported by the analyzed sequence data.
  • The limited dataset and lack of increased sequence diversity challenge the interpretation of sustained viral activity and reservoir maintenance.
  • Further investigation with more comprehensive datasets is needed to understand HIV persistence during ART.