Publications by authors named "J A Whitsett"

Surfactant protein-B (SP-B) deficiency is a lethal neonatal respiratory disease with few therapeutic options. Gene therapy using adeno-associated viruses (AAV) to deliver human cDNA (AAV-hSPB) can improve survival in a mouse model of SP-B deficiency. However, the effect of this gene therapy wanes.

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Article Synopsis
  • Membrane proteins, particularly CFTR, are essential for gastrointestinal health, while the endoplasmic reticulum membrane protein complex (EMC) is crucial for inserting these proteins into cell membranes during synthesis.
  • In mice with a deleted EMC subunit (EMC3ΔIEC), researchers found smaller size and altered intestinal structures, with fewer important cell types like goblet and Paneth cells.
  • The study revealed that EMC is vital for the proper functioning of membrane proteins and maintaining calcium levels in intestinal epithelial cells, suggesting its importance in overall cellular functions.
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Viral lower respiratory tract infections (LRTI) are ubiquitous in early life. They are disproportionately severe in infants and toddlers (0-2 years), leading to more than 100,000 hospitalizations in the United States per year. The recent relative resilience to severe Coronavirus disease (COVID-19) observed in young children is surprising.

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Tubulogenesis depends on precise cell shape changes driven by asymmetric tension from the actin cytoskeleton. How actin asymmetry is dynamically controlled to coordinate epithelial cell shape changes required for respiratory tubulogenesis remains unknown. Herein, we unveiled a critical role for the transcription factor KLF5, regulating actin asymmetry, inducing epithelial cell shape changes by balancing RHOA and CDC42 GTPase activity via RICH2.

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