Catálogo de publicaciones - revistas

<jats:title>Finding a role for PNECs in asthma</jats:title> <jats:p> Pulmonary neuroendocrine cells (PNECs) are a rare cell type located in airway and alveolar epithelia and are often in contact with sensory nerve fibers. They have a wide phylogenic distribution and are found even in the relatively primitive lungs of amphibia and reptiles, suggesting a critical function. Sui <jats:italic>et al.</jats:italic> found that mice lacking PNECs have suppressed type 2 (allergic) immune responses. PNECs were observed in close proximity to group 2 innate lymphoid cells (ILC2s) around airway branch points. The PNECs enhanced ILC2 activity by secreting CGRP (calcitonin gene-related peptide). They also induced goblet-cell hyperplasia via the neurotransmitter GABA (γ-aminobutyric acid). Interestingly, human asthma patients were found to have increased PNEC numbers, suggesting a potential therapeutic target for the treatment of asthma. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , this issue p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" related-article-type="in-this-issue" xlink:href="10.1126/science.aan8546">eaan8546</jats:related-article> </jats:p>

<jats:title>A spotlight on great ape genomes</jats:title> <jats:p> Most nonhuman primate genomes generated to date have been “humanized” owing to their many gaps and the reliance on guidance by the reference human genome. To remove this humanizing effect, Kronenberg <jats:italic>et al.</jats:italic> generated and assembled long-read genomes of a chimpanzee, an orangutan, and two humans and compared them with a previously generated gorilla genome. This analysis recognized genomic structural variation specific to humans and particular ape lineages. Comparisons between human and chimpanzee cerebral organoids showed down-regulation of the expression of specific genes in humans, relative to chimpanzees, related to noncoding variation identified in this analysis. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , this issue p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" related-article-type="in-this-issue" xlink:href="10.1126/science.aar6343">eaar6343</jats:related-article> </jats:p>

<jats:p>Ebola is back. The disease that killed more than 11,000 people in West Africa just a few years ago has returned, striking the Democratic Republic of the Congo (DRC). Last week, intervention with a new vaccine was initiated to help contain the outbreak, adding another tool to a response that is exponentially better than it was 4 years ago. But we are not out of the woods. No matter how long this Ebola outbreak continues, the world faces critical tests in its battle against deadly pathogens. Unlike 2014, when delayed recognition of Ebola led to undetected disease spread, the DRC promptly admitted it had an outbreak and called for assistance. The World Health Organization (WHO) did not try to minimize the problem. Rapid response units from within the DRC and around the world deployed immediately. And, fortunately, the DRC has well-trained epidemiologists as well as laboratory capacity to test for the virus.</jats:p>

<jats:p>A roundup of weekly science policy and related news.</jats:p>

<jats:p>Environmental engineer Claudia Sheinbaum Pardo may become the megacity's next mayor.</jats:p>