Related Experiment Video
Updated: May 25, 2026
Chronic, Acute, and Reactivated HIV Infection in Humanized Immunodeficient Mouse Models
Published on: December 3, 2019
Glomerular MYH9 expression is reduced by HIV-1
Thomas Hays1, Vivette D D'Agati, Jonathan A Garellek
1Mount Sinai School of Medicine, Department of Medicine, New York, New York, USA. thomas.hays@mssm.edu
Background:
The continuing disease burden of HIV-associated nephropathy (HIVAN) warrants better elucidation of its pathogenic mechanisms. Given that loss of MYH9 function causes a Mendelian renal disease, we hypothesized that renal expression of MYH9 is down-regulated by HIV-1 in HIVAN pathogenesis.
Method And Results:
Using immunofluorescence, we determined that glomerular expression of MYH9 was reduced in the kidneys of HIV-1 transgenic mice. We further determined that Myh9 expression was reduced in HIV-1 transgenic podocytes, statistically significantly at the protein level, and that MYH9 expression was significantly reduced at protein and message level in human podocytes transduced with HIV-1. In analyzing expression in human tissue, we confirmed that MYH9 is abundantly expressed in glomeruli, and podocytes specifically. Finally, we found that MYH9 expression was significantly reduced in human glomeruli in the setting of HIVAN.
Conclusion:
We conclude that the podocyte host response to HIV-1 includes down-regulation of MYH9 expression, and hypothesize that this down-regulation might play a role in the pathogenesis of HIVAN.
