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SILAC Based Proteomic Characterization of Exosomes from HIV-1 Infected Cells
Published on: March 3, 2017
Serum proteome changes following human immunodeficiency virus infection
David Haarburger1, Jörgen Bergström, Tahir S Pillay
1Division of Chemical Pathology, National Health Laboratory Service, University of Cape Town, South Africa. david.haarburger@uct.ac.za
Clinical Laboratory
|July 20, 2013
Summary
Researchers identified novel protein changes in HIV patients, aiming for cheaper biomarkers. Significant differences in serum proteome were found between HIV-positive and negative individuals, paving the way for new diagnostic tools.
Area of Science:
- Proteomics
- Biomarker Discovery
- Infectious Disease Research
Background:
- Current HIV monitoring assays (viral RNA, CD4 count) are costly and complex.
- There is a need for more accessible and affordable methods to track HIV progression.
- This study explored serum proteome differences to find new HIV biomarkers.
Purpose of the Study:
- To compare the serum proteome of asymptomatic HIV-positive subjects with HIV-negative controls.
- To identify novel protein expression changes associated with HIV infection.
- To investigate potential protein biomarkers for monitoring HIV progression.
Main Methods:
- Serum samples from HIV-positive and HIV-negative individuals were analyzed.
- Two-dimensional gel electrophoresis was used to separate proteins.
- MALDI-TOF mass spectrometry identified significant protein differences.
Main Results:
- Eleven protein spots showed significant differences between HIV-positive and negative groups.
- Nine proteins were decreased, and two were increased in HIV-positive individuals.
- Identified proteins include keratin, haptoglobin, apolipoprotein A-I, and ribosomal protein L4.
Conclusions:
- Significant proteomic variations exist between HIV-positive and HIV-negative individuals.
- These protein changes could form the basis for new diagnostic immunoassays.
- This offers a potential alternative for monitoring HIV infection in clinical settings.
