PubMed · 339586
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D W Scheuch. 1977. [Prof. Samuel Mitja Rapoport].. https://pubmed.ncbi.nlm.nih.gov/339586/
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The stria vascularis (SV) is an essential component of the inner ear that regulates the ionic environment required for hearing. SV degeneration disrupts cochlear homeostasis, leading to irreversible hearing loss, yet a comprehensive understanding of the SV, and consequently therapeutic availability for SV degeneration, is lacking. We developed a whole-tissue explant model from neonatal and mature mice to create a platform for advancing SV research. We validated our model by demonstrating that the proliferative behavior of the SV in vitro mimics SV in vivo. We also provided evidence for pharmacological experimentation by investigating the role of Wnt/β-catenin signaling in SV proliferation. Finally, we performed single-cell RNA sequencing from in vivo neonatal and mature mouse SV and surrounding tissue and revealed key genes and pathways that may play a role in SV proliferation and maintenance. Together, our results contribute new insights into investigating biological solutions for SV-associated hearing loss.
On February 20, 1996, a workshop titled "Advances in Sedimentation Velocity Analysis" was held at the Biophysical Society meeting in Baltimore, Maryland, in honor of Professor David Yphantis's 65th birthday. Although he is known more for his work with sedimentation equilibrium, David's work on instrumentation and data analysis is the foundation for many of the recent advances in both equilibrium and velocity sedimentation. Over the years he has trained numerous graduate students, most of whom have gone on to emphasize the use of analytical ultracentrifugation to answer biochemical questions involving macromolecular assembly. His laboratory was one of very few that continued to use and develop analytical ultracentrifugation during its nadir in the 1970s and early 1980s. The rebirth and resurgence of analytical ultracentrifugation owe a great deal to his persistence and enthusiasm. These efforts have borne fruit. In the last five years, through his work at the National Analytical Ultracentrifugation Facility, he has helped train nearly 100 individuals in the delicate art of nonlinear least-squares analysis of equilibrium sedimentation data. Furthermore, the number of researchers using the ultracentrifuge and the number of papers published has skyrocketed in the last few years. This workshop, then, was a way to thank David for his years of devotion to analytical ultracentrifugation.
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