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Motile cilia of human airway epithelia contain hedgehog signaling components that mediate noncanonical hedgehog signaling
| Content Provider | Semantic Scholar |
|---|---|
| Author | Mao, Suifang Shah, Alok S. Moninger, Thomas O. Ostedgaard, Lynda S. Lu, Lin Tang, Xiao Xiao Thornell, Ian M. Reznikov, Leah R. Ernst, Sarah E. Karp, Philip H. Tan, Ping Keshavjee, Shaf Alaiwa, Mahmoud H. Abou Welsh, Michael J. |
| Copyright Year | 2018 |
| Abstract | Differentiated airway epithelia produce sonic hedgehog (SHH), which is found in the thin layer of liquid covering the airway surface. Although previous studies showed that vertebrate HH signaling requires primary cilia, as airway epithelia mature, the cells lose primary cilia and produce hundreds of motile cilia. Thus, whether airway epithelia have apical receptors for SHH has remained unknown. We discovered that motile cilia on airway epithelial cells have HH signaling proteins, including patched and smoothened. These cilia also have proteins affecting cAMP-dependent signaling, including Gαi and adenylyl cyclase 5/6. Apical SHH decreases intracellular levels of cAMP, which reduces ciliary beat frequency and pH in airway surface liquid. These results suggest that apical SHH may mediate noncanonical HH signaling through motile cilia to dampen respiratory defenses at the contact point between the environment and the lung, perhaps counterbalancing processes that stimulate airway defenses. |
| Starting Page | 1370 |
| Ending Page | 1375 |
| Page Count | 6 |
| File Format | PDF HTM / HTML |
| PubMed reference number | 29358407v1 |
| Alternate Webpage(s) | https://doi.org/10.1073/pnas.1719177115 |
| DOI | 10.1073/pnas.1719177115 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Volume Number | 115 |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | 8-chloro-cyclic adenosine monophosphate Adenylate Cyclase Cilia Erinaceidae Protein Patched Homolog 1, human SHH gene SMO protein, human Structure of parenchyma of lung |
| Content Type | Text |
| Resource Type | Article |
