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Abstract |
Down syndrome occurs due to triplication of human chromosome 21, and results in many phenotypic defects including slow wound healing, intellectual disability and reduced muscle tone. Here we focus on the role of adhesions in this disorder, which are involved in tissue development, cell migration, and memory formation. Previous work from our lab demonstrates that fibroblasts from individuals with Down syndrome have increased focal adhesions, which are multi-protein complexes that link the extracellular matrix to the intracellular cytoskeleton. We also found that the area, perimeter and motility of Down syndrome fibroblasts is altered. Taken together, these data suggest that increased adhesion may lead to reduced cellular motility in Down syndrome. Here we show that RACK1, a scaffolding protein and member of the focal adhesion complex, is overexpressed in Down syndrome fibroblasts. We also demonstrate that RACK1 can be knocked down with shRNA in Down syndrome fibroblasts to levels comparable to apparently healthy control cells. We are currently investigating whether knocking down RACK1 to control values is able to rescue the phenotypic defects present in Down syndrome fibroblasts, such as cell size, cell shape, and motility. Furthermore, substrate type is known to have a profound effect on protein expression and differentiation, and we have preliminary data that the substrate affects the expression level of RACK1 differentially in Down syndrome fibroblasts. Examining the role of RACK1 in Down syndrome is relevant for understanding the phenotypic defects of individuals with this disorder and may also provide insight into therapeutic and clinical treatments.
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Contributor(s) |
Faculty Mentor
Kristy Welshhans |
Modified Abstract |
Down syndrome occurs due to triplication of human chromosome 21, and results in many phenotypic defects. Here we focus on the role of adhesions in this disorder, which are involved in tissue development, cell migration, and memory formation. Previous work demonstrates that fibroblasts from individuals with Down syndrome have increased focal adhesions. We also found that the area, perimeter and motility of Down syndrome fibroblasts is altered. Here we show that RACK1, a scaffolding protein and member of the focal adhesion complex, is overexpressed in Down syndrome fibroblasts and can be knocked down with shRNA in Down syndrome fibroblasts to levels comparable to apparently healthy control cells. Examining the role of RACK1 in Down syndrome is relevant for providing insight into therapeutic and clinical treatments. |
Permalink | https://oaks.kent.edu/ugresearch/2020/biomedical-sciences/bryan-soth-abstracts-research-symposium-rack1-rescue-project |
Bryan Soth Abstracts for Research Symposium - RACK1 Rescue Project
Soth, B. (n.d.). Bryan Soth Abstracts for Research Symposium - RACK1 Rescue Project (1–). https://oaks.kent.edu/node/10201
Soth, Bryan. n.d. “Bryan Soth Abstracts for Research Symposium - RACK1 Rescue Project”. https://oaks.kent.edu/node/10201.
Soth, Bryan. Bryan Soth Abstracts for Research Symposium - RACK1 Rescue Project. https://oaks.kent.edu/node/10201.