analytical-determination-mitochondrial-function-excised-solid-tumor

Analytical Determination of Mitochondrial Function of Excised Solid Tumor Homogenates

Mitochondria are essential to the onset and progression of cancer through energy production, reactive oxygen species regulation, and macromolecule ...

Pennington Biomedical Research Center

Case Western Reserve University

Mutations in Valosin Containing Protein (VCP) are associated with several degenerative diseases, including multisystem proteinopathy (MSP-1) and amyotrophic lateral sclerosis. However, patients with VCP mutations vary widely in their pathology and clinical penetrance, making it difficult to devise effective treatment strategies. A deeper understanding of how each mutation affects VCP function could enhance the prediction of clinical outcomes and design of personalized treatment options. The power of a genetically tractable model organism coupled with well-established in vivo assays and a relatively short life cycle make Drosophila an attractive system to study VCP disease pathogenesis. Using CRISPR/Cas9, we have generated individual Drosophila knock-in mutants that include nine hereditary VCP disease mutations. Our models display many hallmarks of VCP-mediated degeneration, including progressive decline in mobility, protein aggregate accumulation and defects in lysosomal and mitochondrial function. We also made some novel and unexpected findings, including nuclear morphology defects and sex-specific phenotypic differences in several mutants. Taken together, the Drosophila VCP disease models generated in this study will be useful for studying the etiology of individual VCP patient mutations and testing potential genetic and/or pharmacological therapies.

Elizabeth R. M. Zunica

Integrated Physiology and Molecular Medicine Laboratory,
Clinical Oncology and Metabolism

Pennington Biomedical Research Center

Analytical Determination of Mitochondrial Function of Excised Solid Tumor Homogenates

Elizabeth R. M. Zunica

.css-o250i3{font-size:18px;font-family:Open Sans,sans-serif;line-height:21.6px;}Integrated Physiology and Molecular Medicine Laboratory,Clinical Oncology and Metabolism

Pennington Biomedical Research Center

Analytical Determination of Mitochondrial Function of Excised Solid Tumor Homogenates

Integrated Physiology and Molecular Medicine Laboratory,
Clinical Oncology and Metabolism