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Updated: Mar 14, 2026
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Identifying Dysregulated Genes Induced by Kaposi's Sarcoma-associated Herpesvirus KSHV
Published on: September 14, 2010
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HIV-1 Evolutionary Patterns Associated with Metastatic Kaposi's Sarcoma during AIDS
Susanna L Lamers1, Rebecca Rose1, David J Nolan2
1Bioinfoexperts, LLC, 718 Bayou Lane, Thibodaux, LA 70302, USA.
Sarcoma
|September 22, 2016
Summary
Human immunodeficiency virus (HIV) evolution patterns in Kaposi's sarcoma (KS) tumors may indicate disease progression. Analyzing HIV sequences in KS tissues reveals distinct evolutionary patterns linked to tumor aggressiveness and spread.
Area of Science:
- Virology
- Oncology
- Immunology
Background:
- Kaposi's sarcoma (KS) presents diverse clinical outcomes in HIV-infected individuals, ranging from indolent skin lesions to aggressive visceral disease.
- KS tumors comprise endothelial-related and inflammatory cells, some of which can be infected by HIV.
Purpose of the Study:
- To investigate whether human immunodeficiency virus (HIV) evolutionary patterns correlate with the relatedness and progression of Kaposi's sarcoma (KS) tumors.
- To analyze HIV genetic diversity within KS tumors from patients who died from HIV-AIDS before widespread antiretroviral therapy availability.
Main Methods:
- Acquisition of multisite autopsy tissues (skin, visceral tumors, non-tumor tissues) from 3 HIV-AIDS patients with Kaposi's sarcoma.
- Single genome sequencing of HIV RNA and DNA present in all tumor samples.
- Phylogenetic analysis of HIV sequences to assess evolutionary patterns and compartmentalization within and between tumors.
Main Results:
- HIV RNA and DNA were detected in all analyzed KS tumor tissues.
- Distinct HIV evolutionary patterns, including independent clades, were observed in patients with less aggressive KS (KS1, KS2).
- Patient KS3, with aggressive and metastatic KS, showed interrelated HIV sequences without compartmentalization, suggesting strong selection and interplay with tumor cells.
Conclusions:
- HIV evolutionary patterns and compartmentalization within KS tumors may distinguish between indolent and aggressive disease.
- The findings suggest a potential interplay between tumor cells and HIV-infected cells that could drive KS progression.
- Further research with larger sample sizes is warranted to confirm the role of HIV evolution in Kaposi's sarcoma pathogenesis.
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