Chunling Gao, Weiming Ouyang, Joseph Kutza, Tobias A Grimm, Karen Fields, Carla S R Lankford, Franziska Schwartzkopff, Mark Paciga, Tzanko Stantchev, Linda Tiffany, Klaus Strebel, Kathleen A Clouse
Human immunodeficiency virus type 2 (HIV-2) is known to be less pathogenic than HIV-1. However, the mechanism(s) underlying the decreased HIV-2 pathogenicity is not fully understood. Herein, we report that β-chemokine CCL2 expression was increased in HIV-1-infected human monocyte-derived macrophages (MDM) but decreased in HIV-2-infected MDM when compared to uninfected MDM. Inhibition of CCL2 expression following HIV-2 infection occurred at both protein and mRNA levels. By microarray analysis, quantitative PCR, and Western blotting, we identified that Signal Transducer and Activator of Transcription 1 (STAT1), a critical transcription factor for inducing CCL2 gene expression, was also reduced in HIV-2-infected MDM...
October 27, 2023: Viruses