Minocycline down-regulates topical mucosal inflammation during the application of microbicide candidates.

Abstract

An effective anti-human immunodeficiency virus-1 (HIV-1) microbicide should exert its action in the absence of causing aberrant activation of topical immunity that will increase the risk of HIV acquisition. In the present study, we demonstrated that the vaginal application of cellulose sulfate (CS) gel induced topical mucosal inflammatory responses; the addition of minocycline to CS gel could significantly attenuate the inflammation in a mice model. The combined gel of CS plus minocycline not only reduced the production of inflammatory cytokines in cervicovaginal lavages (CVLs), also down-regulated the activation of CD4+ T cells and the recruitment of other immune cells including HIV target cells into vaginal tissues. Furthermore, an In vitro HIV-1 pseudovirus infection inhibition assay showed that the combined gel decreased the infection efficacy of different subtypes of HIV-1 pseudoviruses compared with that of CS gel alone. These results implicate that minocycline could be integrated into microbicide formulation to suppress the aberrant activation of topical mucosal immunity and enhance the safety profile during the application of microbicides.

• Authors: Liangzhu Li, Yinyin Ben, Zhaoqin Zhu, Weihua Li, Jianqing Xu, Xiaoyan Zhang
• Journal: PloS one (PLoS One) Vol. 7 Issue 8 Pg. e43211 ( 2012) ISSN: 1932-6203 [Electronic] United States
• PMID: 22905236 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Anti-Bacterial Agents
• Anti-Infective Agents
• Gels
• Cellulose
• cellulose sulfate
• Minocycline

Topics

• Animals
• Anti-Bacterial Agents (pharmacology)
• Anti-Infective Agents (pharmacology)
• CD4-Positive T-Lymphocytes (cytology)
• Cellulose (analogs & derivatives, pharmacology)
• Down-Regulation
• Drug Evaluation, Preclinical
• Female
• Gels
• HIV Infections (prevention & control)
• Inflammation (metabolism)
• Mice
• Mice, Inbred BALB C
• Minocycline (pharmacology)
• Mucous Membrane (metabolism)
• Vagina (drug effects, microbiology, virology)