The Journal of cell biology, 2017-12, Vol.216 (12), p.3959-3969
2017
Details
- Autor(en) / Beteiligte
- Titel
- Prepatterning by RhoGEFs governs Rho GTPase spatiotemporal dynamics during wound repair
- Ist Teil von
- The Journal of cell biology, 2017-12, Vol.216 (12), p.3959-3969
- Ort / Verlag
- United States: Rockefeller University Press
- Erscheinungsjahr
- 2017
- Link zum Volltext
- Quelle
- Free E-Journal (出版社公開部分のみ）
- Beschreibungen/Notizen
- Like tissues, single cells are subjected to continual stresses and damage. As such, cells have a robust wound repair mechanism comprised of dynamic membrane resealing and cortical cytoskeletal remodeling. One group of proteins, the Rho family of small guanosine triphosphatases (GTPases), is critical for this actin and myosin cytoskeletal response in which they form distinct dynamic spatial and temporal patterns/arrays surrounding the wound. A key mechanistic question, then, is how these GTPase arrays are formed. Here, we show that in the cell wound repair model Rho GTPase arrays form in response to prepatterning by Rho guanine nucleotide exchange factors (RhoGEFs), a family of proteins involved in the activation of small GTPases. Furthermore, we show that Annexin B9, a member of a class of proteins associated with the membrane resealing, is involved in an early, Rho family-independent, actin stabilization that is integral to the formation of one RhoGEF array. Thus, Annexin proteins may link membrane resealing to cytoskeletal remodeling processes in single cell wound repair.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 0021-9525eISSN: 1540-8140DOI: 10.1083/jcb.201704145Titel-ID: cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_5716286
- Format
- –
- Schlagworte
- Actins - genetics, Actins - metabolism, Animals, Annexins - genetics, Annexins - metabolism, Cells, Cytoskeleton, Cytoskeleton - metabolism, Cytoskeleton - ultrastructure, Drosophila melanogaster - cytology, Drosophila melanogaster - genetics, Drosophila melanogaster - metabolism, Drosophila melanogaster - ultrastructure, Drosophila Proteins - antagonists & inhibitors, Drosophila Proteins - genetics, Drosophila Proteins - metabolism, Embryo, Nonmammalian, Gene Expression Regulation, Developmental, GTP-Binding Proteins - genetics, GTP-Binding Proteins - metabolism, GTPase-Activating Proteins - antagonists & inhibitors, GTPase-Activating Proteins - genetics, GTPase-Activating Proteins - metabolism, Guanine Nucleotide Exchange Factors - antagonists & inhibitors, Guanine Nucleotide Exchange Factors - genetics, Guanine Nucleotide Exchange Factors - metabolism, Humans, Membranes, Models, Biological, Proteins, rac GTP-Binding Proteins - genetics, rac GTP-Binding Proteins - metabolism, rho GTP-Binding Proteins - antagonists & inhibitors, rho GTP-Binding Proteins - genetics, rho GTP-Binding Proteins - metabolism, RNA, Small Interfering - genetics, RNA, Small Interfering - metabolism, Signal Transduction, Tissues, Wound Healing - genetics