Ken E. Olson

Suppression of RNA interference increases alphavirus replication and virus-associated mortality in Aedes aegyptimosquitoes (2009)

Cirimotich, Chris M, Scott, Jaclyn C, Phillips, Aaron T, Geiss, Brian J, Olson, Ken E

Abstract Background Arthropod-borne viruses (arboviruses) can persistently infect and cause limited damage to mosquito vectors. RNA interference (RNAi) is a mosquito antiviral response important in...

Article URL (2009)

Bmc Microbiology, Christopher M Cirimotich, Jaclyn C Scott, Aaron T Phillips, Brian J Geiss, Ken E Olson, ...

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Aedes aegyptiuses RNA interference in defense against Sindbis virus infection (2008)

Campbell, Corey L, Keene, Kimberly M, Brackney, Douglas E, Olson, Ken E, Blair, Carol D, Wilusz, Jeffrey, ...

Abstract Background RNA interference (RNAi) is an important anti-viral defense mechanism. The Aedes aegypti genome encodes RNAi component orthologs, however, most populations of this mosquito are...

Recombination-ready Sindbis replicon expression vectors for transgene expression (2007)

Geiss, Brian J, Shimonkevitz, Lisa H, Sackal, Cherilyn I, Olson, Ken E

Abstract Background Sindbis viruses have been widely used as tools to study gene function in cells. Despite the utility of these systems, the construction and production of alphavirus replicons is...

Dengue virus type 2: replication and tropisms in orally infected Aedes aegyptimosquitoes (2007)

Salazar, Ma Isabel, Richardson, Jason H, Sánchez-Vargas, Irma, Olson, Ken E, Beaty, Barry J

Abstract Background To be transmitted by its mosquito vector, dengue virus (DENV) must infect midgut epithelial cells, replicate and disseminate into the hemocoel, and finally infect the salivary...

Comparison of the Transmission Potential of Two Genetically Distinct Sindbis Viruses After Oral Infection of Aedes aegypti (Diptera: Culicidae) (2004)

Kevin M. Myles, Dennis J. Pierro, Ken E. Olson

Within mosquitoes, arboviruses encounter barriers to infection and dissemination that are critical determinants of vector competence. The molecular mechanisms responsible for these barriers have yet...

Inhibition of luciferase expression in transgenic Aedes aegypti mosquitoes by Sindbis virus expression of antisense luciferase RNA

Johnson, Barbara W., Olson, Ken E., Allen-Miura, Tanya, Rayms-Keller, Alfredo, Carlson, Jonathan O., Coates, Craig J., ...

A rapid and reproducible method of inhibiting the expression of specific genes in mosquitoes should further our understanding of gene function and may lead to the identification of mosquito genes...

Molecular Strategies for Interrupting Arthropod-Borne Virus Transmission by Mosquitoes

Blair, Carol D., Adelman, Zachary N., Olson, Ken E.

Arthropod-borne virus (arbovirus) infections cause a number of emerging and resurgent human and veterinary infectious diseases. Traditional means of controlling arbovirus diseases include vaccination...

Expression of Human MxA Protein in Mosquito Cells Interferes with LaCrosse Virus Replication

Miura, Tanya A., Carlson, Jonathan O., Beaty, Barry J., Bowen, Richard A., Olson, Ken E.

Human MxA protein inhibits LaCrosse virus (LAC virus; family Bunyaviridae) replication in vertebrate cells and MxA-transgenic mice. LAC virus is transmitted to humans by Aedes triseriatus mosquitoes....

RNA Silencing of Dengue Virus Type 2 Replication in Transformed C6/36 Mosquito Cells Transcribing an Inverted-Repeat RNA Derived from the Virus Genome

Adelman, Zach N., Sanchez-Vargas, Irma, Travanty, Emily A., Carlson, Jon O., Beaty, Barry J., Blair, Carol D., ...

Double-stranded RNA (dsRNA) initiates cellular posttranscriptional responses that are collectively called RNA silencing in a number of different organisms, including plants, nematodes, and fruit...

Deletions in the Putative Cell Receptor-Binding Domain of Sindbis Virus Strain MRE16 E2 Glycoprotein Reduce Midgut Infectivity in Aedes aegypti

Myles, Kevin M., Pierro, Dennis J., Olson, Ken E.

The Sindbis virus (Alphavirus; Togaviridae) strain MRE16 efficiently infects Aedes aegypti mosquitoes that ingest a blood meal containing 8 to 9 log10 PFU of virus/ml. However, a small-plaque variant...

Use of Sindbis virus-mediated RNA interference to demonstrate a conserved role of Broad-Complex in insect metamorphosis

Uhlirova, Mirka, Foy, Brian D., Beaty, Barry J., Olson, Ken E., Riddiford, Lynn M., Jindra, Marek

The transcription factor Broad-Complex (BR-C) is required for differentiation of adult structures as well as for the programmed death of obsolete larval organs during metamorphosis of the fruit fly...

RNA interference acts as a natural antiviral response to O'nyong-nyong virus (Alphavirus; Togaviridae) infection of Anopheles gambiae

Keene, Kimberly M., Foy, Brian D., Sanchez-Vargas, Irma, Beaty, Barry J., Blair, Carol D., Olson, Ken E.

RNA interference (RNAi) is triggered in eukaryotic organisms by double-stranded RNA (dsRNA), and it destroys any mRNA that has sequence identity with the dsRNA trigger. The RNAi pathway in Anopheles...

Engineering RNA interference-based resistance to dengue virus type 2 in genetically modified Aedes aegypti

Franz, Alexander W. E., Sanchez-Vargas, Irma, Adelman, Zach N., Blair, Carol D., Beaty, Barry J., James, Anthony A., ...

Mosquitoes (Aedes aegypti) were genetically modified to exhibit impaired vector competence for dengue type 2 viruses (DENV-2). We exploited the natural antiviral RNA interference (RNAi) pathway in...

Inhibition of luciferase expression in transgenic Aedes aegypti mosquitoes by Sindbis virus expression of antisense luciferase RNA

Johnson, Barbara W., Olson, Ken E., Allen-Miura, Tanya, Rayms-Keller, Alfredo, Carlson, Jonathan O., Coates, Craig J., ...

A rapid and reproducible method of inhibiting the expression of specific genes in mosquitoes should further our understanding of gene function and may lead to the identification of mosquito genes...

Molecular Strategies for Interrupting Arthropod-Borne Virus Transmission by Mosquitoes

Blair, Carol D., Adelman, Zachary N., Olson, Ken E.

Arthropod-borne virus (arbovirus) infections cause a number of emerging and resurgent human and veterinary infectious diseases. Traditional means of controlling arbovirus diseases include vaccination...

Expression of Human MxA Protein in Mosquito Cells Interferes with LaCrosse Virus Replication

Miura, Tanya A., Carlson, Jonathan O., Beaty, Barry J., Bowen, Richard A., Olson, Ken E.

Human MxA protein inhibits LaCrosse virus (LAC virus; family Bunyaviridae) replication in vertebrate cells and MxA-transgenic mice. LAC virus is transmitted to humans by Aedes triseriatus mosquitoes....

RNA Silencing of Dengue Virus Type 2 Replication in Transformed C6/36 Mosquito Cells Transcribing an Inverted-Repeat RNA Derived from the Virus Genome

Adelman, Zach N., Sanchez-Vargas, Irma, Travanty, Emily A., Carlson, Jon O., Beaty, Barry J., Blair, Carol D., ...

Double-stranded RNA (dsRNA) initiates cellular posttranscriptional responses that are collectively called RNA silencing in a number of different organisms, including plants, nematodes, and fruit...

Deletions in the Putative Cell Receptor-Binding Domain of Sindbis Virus Strain MRE16 E2 Glycoprotein Reduce Midgut Infectivity in Aedes aegypti

Myles, Kevin M., Pierro, Dennis J., Olson, Ken E.

The Sindbis virus (Alphavirus; Togaviridae) strain MRE16 efficiently infects Aedes aegypti mosquitoes that ingest a blood meal containing 8 to 9 log10 PFU of virus/ml. However, a small-plaque variant...

Use of Sindbis virus-mediated RNA interference to demonstrate a conserved role of Broad-Complex in insect metamorphosis

Uhlirova, Mirka, Foy, Brian D., Beaty, Barry J., Olson, Ken E., Riddiford, Lynn M., Jindra, Marek

The transcription factor Broad-Complex (BR-C) is required for differentiation of adult structures as well as for the programmed death of obsolete larval organs during metamorphosis of the fruit fly...

RNA interference acts as a natural antiviral response to O'nyong-nyong virus (Alphavirus; Togaviridae) infection of Anopheles gambiae

Keene, Kimberly M., Foy, Brian D., Sanchez-Vargas, Irma, Beaty, Barry J., Blair, Carol D., Olson, Ken E.

RNA interference (RNAi) is triggered in eukaryotic organisms by double-stranded RNA (dsRNA), and it destroys any mRNA that has sequence identity with the dsRNA trigger. The RNAi pathway in Anopheles...

Engineering RNA interference-based resistance to dengue virus type 2 in genetically modified Aedes aegypti

Franz, Alexander W. E., Sanchez-Vargas, Irma, Adelman, Zach N., Blair, Carol D., Beaty, Barry J., James, Anthony A., ...

Mosquitoes (Aedes aegypti) were genetically modified to exhibit impaired vector competence for dengue type 2 viruses (DENV-2). We exploited the natural antiviral RNA interference (RNAi) pathway in...

La Crosse Bunyavirus Nonstructural Protein NSs Serves To Suppress the Type I Interferon System of Mammalian Hosts▿

Blakqori, Gjon, Delhaye, Sophie, Habjan, Matthias, Blair, Carol D., Sánchez-Vargas, Irma, Olson, Ken E., ...

La Crosse virus (LACV) is a mosquito-transmitted member of the Bunyaviridae family that causes severe encephalitis in children. For the LACV nonstructural protein NSs, previous overexpression studies...

Genetic Determinants of Sindbis Virus Mosquito Infection Are Associated with a Highly Conserved Alphavirus and Flavivirus Envelope Sequence▿

Pierro, Dennis J., Powers, Erik L., Olson, Ken E.

Wild-type Sindbis virus (SINV) strain MRE16 efficiently infects Aedes aegypti midgut epithelial cells (MEC), but laboratory-derived neurovirulent SINV strain TE/5′2J infects MEC poorly. SINV...

Dengue Virus Type 2 Infections of Aedes aegypti Are Modulated by the Mosquito's RNA Interference Pathway

Sánchez-Vargas, Irma, Scott, Jaclyn C., Poole-Smith, B. Katherine, Franz, Alexander W. E., Barbosa-Solomieu, Valérie, Wilusz, Jeffrey, ...

A number of studies have shown that both innate and adaptive immune defense mechanisms greatly influence the course of human dengue virus (DENV) infections, but little is known about the innate...

The Neovolcanic Axis Is a Barrier to Gene Flow among Aedes aegypti Populations in Mexico That Differ in Vector Competence for Dengue 2 Virus

Lozano-Fuentes, Saul, Fernandez-Salas, Ildefonso, De Lourdes Munoz, Maria, Garcia-Rejon, Julian, Olson, Ken E., Beaty, Barry J., ...

The Neovolcanic axis (NVA) traverses Mexico at the 19th parallel and is considered to be a geographic barrier to many species. We have demonstrated that the intersection of the NVA with the coast in...