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Full-Text Articles in Life Sciences

Examining The Role Of Rgs2 In The Maintenance Of Diapause After Anoxic Stress In Embryos Of The Annual Killifish Austrofundulus Limnaeus, Patrick Clouser May 2024

Examining The Role Of Rgs2 In The Maintenance Of Diapause After Anoxic Stress In Embryos Of The Annual Killifish Austrofundulus Limnaeus, Patrick Clouser

Student Research Symposium

Austrofundulus limnaeus live in ephemeral ponds of Venezuela. They have evolved a unique life history that includes embryonic diapause, a period of developmental dormancy, metabolic arrest, and reduced protein synthesis. Diapausing embryos are resistant to environmental stress and survive months without oxygen (anoxia). A. limnaeus’ anoxia tolerance is an important survival mechanism as they can be buried in anoxic soil during development. Analysis of RNAseq data from diapausing A. limnaeus embryos show significant down-regulation of RGS2 transcripts in anoxic embryos. RGS2 regulates G-protein receptor signaling by inhibiting associated Ga-proteins and can inhibit protein synthesis. I hypothesis that …


Investigating The Escape Mechanism Of Sre Bearing Mrna Transcripts During Viral Host Shutoff, Daniel Macveigh-Fierro Mar 2024

Investigating The Escape Mechanism Of Sre Bearing Mrna Transcripts During Viral Host Shutoff, Daniel Macveigh-Fierro

Doctoral Dissertations

During viral infection, the virus and host clash for control over gene expression in an evolutionarily arms race that has raged for thousands of years. During lytic replication, Kaposi’s sarcoma associated herpesvirus (KSHV) triggers a massive RNA decay event known as host shut off. This causes over 70% of all RNA to be degraded suppressing the host antiviral response while freeing resources for viral replication. Our lab focuses on a subset of transcripts that escape from this viral degradation event using a cis acting 3’ UTR element known as a “SOX resistant element” or SRE. Although we have identified a …