Related Experiment Video

Updated: Aug 9, 2026

Assessing the Innate Sensing of HIV-1 Infected CD4+ T Cells by Plasmacytoid Dendritic Cells Using an Ex vivo Co-culture System.
08:11

Assessing the Innate Sensing of HIV-1 Infected CD4+ T Cells by Plasmacytoid Dendritic Cells Using an Ex vivo Co-culture System.

Published on: September 1, 2015

Interactions between HIV infection and lymphoplasmacytoid lymphoma

Faye Lim1, Saad H Abdalla

  • 1Department of Haematology St Mary's Hospital, London, UK.

Leukemia & Lymphoma
|December 3, 2005
PubMed

Insights

This case study shows that CD4+ cells may control B cell proliferation. HIV infection, which lowers CD4+ cells, might increase lymphoma risk.

Area of Science:

  • Immunology
  • Oncology
  • Virology

Background:

  • Lymphoplasmacytic lymphoma (LPL) is a B-cell malignancy.
  • Human Immunodeficiency Virus (HIV) infection is associated with an increased risk of lymphomas.
  • The interplay between HIV, CD4+ T-cell counts, and B-cell lymphoproliferative disorders requires further elucidation.

Observation:

  • A patient with asymptomatic LPL and IgM paraproteinemia acquired HIV infection.
  • Following HIV seroconversion, a decrease in CD4+ cell counts and disease progression (increased paraprotein, decreased hemoglobin) were observed.
  • Bone marrow analysis revealed reduced CD4+ cells and increased CD138+ cells post-seroconversion.

Findings:

  • Highly Active Antiretroviral Therapy (HAART) led to reduced HIV viral load and increased peripheral blood CD4+ counts.
  • Treatment also resulted in decreased paraprotein levels and improved hemoglobin.
  • The patient's LPL showed signs of progression correlating with CD4+ T-cell depletion.

Implications:

  • This case suggests a critical role for CD4+ T-cells in regulating B-cell proliferation.
  • CD4+ T-cell suppression in HIV infection may contribute to the higher incidence of lymphoma.
  • Understanding this relationship can inform future therapeutic strategies for HIV-associated lymphomas.

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