Structural Modifications and Biological Evaluations of Rift Valley Fever Virus Inhibitors Identified from Chemical Library Screening

Islam, Koushikul,1985-Umeå universitet,Institutionen för klinisk mikrobiologi (author)

The Rift Valley fever virus (RVFV) is an emerging high-priority pathogen endemic in Africa with pandemic potential. There is no specific treatment or approved antiviral drugs for the RVFV. We previously developed a cell-based high-throughput assay to screen small molecules targeting the RVFV and identified a potential effective antiviral compound (1-N-(2-(biphenyl-4-yloxy)ethyl)propane-1,3-diamine) as a lead compound. Here, we investigated how structural modifications of the lead compound affected the biological properties and the antiviral effect against the RVFV. We found that the length of the 2-(3-aminopropylamino)ethyl chain of the compound was important for the compound to retain its antiviral activity. The antiviral activity was similar when the 2-(3-aminopropylamino)ethyl chain was replaced with a butyl piperazine chain. However, we could improve the cytotoxicity profile of the lead compound by changing the phenyl piperazine linker from the para-position (compound 9a) to the meta-position (compound 13a). Results from time-of-addition studies suggested that compound 13a might be active during virus post-entry and/or the replication phase of the virus life cycle and seemed to affect the K+ channel. The modifications improved the properties of our lead compound, and our data suggest that 13a is a promising candidate to evaluate further as a therapeutic agent for RVFV infection.

Carlsson, MarcusUmeå universitet,Kemiska institutionen(Swepub:umu)mascan97 (author)
Enquist, Per-AndersUmeå universitet,Kemiska institutionen(Swepub:umu)peen0006 (author)
Qian, WeixingUmeå universitet,Kemiska institutionen(Swepub:umu)weqi0002 (author)
Marttila, MarkoUmeå universitet,Institutionen för klinisk mikrobiologi(Swepub:umu)maomaa00 (author)
Strand, Mårten,1982-Umeå universitet,Institutionen för klinisk mikrobiologi(Swepub:umu)mansnd02 (author)
Ahlm, Clas,1956-Umeå universitet,Institutionen för klinisk mikrobiologi(Swepub:umu)clah0001 (author)
Evander, MagnusUmeå universitet,Institutionen för klinisk mikrobiologi(Swepub:umu)maev0001 (author)
Umeå universitetInstitutionen för klinisk mikrobiologi (creator_code:org_t)

By the author/editor: Islam, Koushikul ...; Carlsson, Marcus; Enquist, Per-And ...; Qian, Weixing; Marttila, Marko; Strand, Mårten, ...; show more...; Ahlm, Clas, 1956 ...; Evander, Magnus; show less...

About the subject

MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Medical Biotechn ...; and Medical Biotechn ...

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