Article Abstract:
Two human airway epithelial cell culture models were developed to study the pathogenesis of cystic fibrosis airways disease. These frameworks were used to differentiate the hypotonic (low salt) airway surface liquid/defensin hypothesis and the isotonic volume transport/mucus clearance hypothesis. These two theories explain the role of airway epithelial ion transport in lung defense and predict the impact of mutations in cystic fibrosis transmembrane conductance regulator. Findings did not show that the liquids lining airway surfaces were hypotonic or that salt concentrations were different between cystic fibrosis and normal cultures.
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Article Abstract:
The mechanism of RNA recombination was investigated using the molecular colony technique, a purified cell-free system composed of pure RNAs and a homogeneous preparation of Q-beta replicase, the bacteriophage Q-beta RNA-directed RNA polymerase. The results demonstrated that RNA recombination can proceed even without DNA intermediates and in the absence of host cell components.
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Article Abstract:
It has been shown that ilimaquinone (IQ), a marine sponge metabolite, can cause vesiculation of the Golgi stacks. It has also been shown that the process does not require ARF and coatomers. IQ-mediated Golgi vesiculation was found to be inhibited by Galphas-GDP and Galpha13-GDP, and that the free Betagamma triggers Golgi vesiculation.
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