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Genetics and Genomics Commons

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Full-Text Articles in Genetics and Genomics

Multistrain Hiv-1 Elimination: A Crispr-Cas9 And Theranostics-Based Approach, Jonathan Herskovitz Dec 2020

Multistrain Hiv-1 Elimination: A Crispr-Cas9 And Theranostics-Based Approach, Jonathan Herskovitz

Theses & Dissertations

A critical barrier to achieving a functional cure for infection by human immunodeficiency virus type one (HIV-1) rests in the presence of latent proviral DNA integrated in the nuclei of host CD4+ T cells and mononuclear phagocytes. Accordingly, HIV-1-infected patients must adhere to lifelong regimens of antiretroviral therapy (ART) to prevent viral rebound, CD4+ T cell decline, and progression to acquired immunodeficiency syndrome (AIDS). Gene editing using clustered regularly interspersed short palindromic repeat (CRISPR)-Cas9 technology stands as one means to inactivate integrated proviral DNA. We devised a mosaic gRNA CRISPR-Cas9 system- TatDE- that targets viral transcriptional regulator genes tat / …


Molecular Identification And Characterization Of Viral Pathogens Infecting Sweet Cherry, Aaron J. Simkovich Oct 2020

Molecular Identification And Characterization Of Viral Pathogens Infecting Sweet Cherry, Aaron J. Simkovich

Electronic Thesis and Dissertation Repository

Stone fruits are a valuable crop grown worldwide, however pathogens such as viruses threaten fruit production by reducing tree health and fruit yield. In an orchard within the Niagara region of Ontario, symptoms typical of viral infection such as chlorosis and leaf deformation were seen on sweet cherry (Prunus avium L.) trees. Next generation sequencing was performed on symptomatic and asymptomatic leaves and four viruses were identified. On the tree displaying the most severe symptoms, Prune dwarf virus (PDV), was the only virus detected. A survey conducted during this work showed 42% of cherry trees on a single …


Identification Of Genome-Linked Bacillus Bacteriophage Proteins, Katherine Dyer May 2020

Identification Of Genome-Linked Bacillus Bacteriophage Proteins, Katherine Dyer

Honors Program Theses

Small viruses that can infect bacteria, called bacteriophages, can be found in the soil. These viruses are being examined as a potential treatment against bacterial infections when antibiotics are not available or non-effective. Before viruses can be used as a medical treatment, they must be studied extensively. Previous attempts to sequence the terminal end of the genome of a bacteriophage QCM-11 (Quartz-Crystal-Microbalance-11: Q11) resulted in error. It is thought that a covalently bound protein may be attached to Q11’s DNA, blocking sequencing of the genome from the 5’ end. Proteins bound to the DNA of phages is not unheard of, …