» Articles » PMID: 35524157

Calcium Bursts Allow Rapid Reorganization of EFhD2/Swip-1 Cross-linked Actin Networks in Epithelial Wound Closure

Overview
Journal Nat Commun
Specialty Biology
Date 2022 May 6
PMID 35524157
Authors
Affiliations
Soon will be listed here.
Abstract

Changes in cell morphology require the dynamic remodeling of the actin cytoskeleton. Calcium fluxes have been suggested as an important signal to rapidly relay information to the actin cytoskeleton, but the underlying mechanisms remain poorly understood. Here, we identify the EF-hand domain containing protein EFhD2/Swip-1 as a conserved lamellipodial protein strongly upregulated in Drosophila macrophages at the onset of metamorphosis when macrophage behavior shifts from quiescent to migratory state. Loss- and gain-of-function analysis confirm a critical function of EFhD2/Swip-1 in lamellipodial cell migration in fly and mouse melanoma cells. Contrary to previous assumptions, TIRF-analyses unambiguously demonstrate that EFhD2/Swip-1 proteins efficiently cross-link actin filaments in a calcium-dependent manner. Using a single-cell wounding model, we show that EFhD2/Swip-1 promotes wound closure in a calcium-dependent manner. Mechanistically, our data suggest that transient calcium bursts reduce EFhD2/Swip-1 cross-linking activity and thereby promote rapid reorganization of existing actin networks to drive epithelial wound closure.

Citing Articles

CYRI controls epidermal wound closure and cohesion of invasive border cell cluster in Drosophila.

Rotte M, Hohne M, Klug D, Ramlow K, Zedler C, Lehne F J Cell Biol. 2024; 223(12).

PMID: 39453414 PMC: 11519390. DOI: 10.1083/jcb.202310153.


Calcium signaling in mitochondrial intermembrane space.

Goyani S, Shukla S, Jadiya P, Tomar D Biochem Soc Trans. 2024; 52(5):2215-2229.

PMID: 39392359 PMC: 11727339. DOI: 10.1042/BST20240319.


EFHD2 suppresses intestinal inflammation by blocking intestinal epithelial cell TNFR1 internalization and cell death.

Wu J, Xu X, Duan J, Chai Y, Song J, Gong D Nat Commun. 2024; 15(1):1282.

PMID: 38346956 PMC: 10861516. DOI: 10.1038/s41467-024-45539-x.


Cx43-mediated hyphal folding counteracts phagosome integrity loss during fungal infection.

Cristovao B, Rodrigues L, Catarino S, Abreu M, Goncalves T, Domingues N Microbiol Spectr. 2023; :e0123823.

PMID: 37733471 PMC: 10581180. DOI: 10.1128/spectrum.01238-23.


Single-cell transcriptomics identifies new blood cell populations in Drosophila released at the onset of metamorphosis.

Hirschhauser A, Molitor D, Salinas G, Grosshans J, Rust K, Bogdan S Development. 2023; 150(18).

PMID: 37681301 PMC: 10560556. DOI: 10.1242/dev.201767.


References
1.
Huh Y, Oh S, Yeo Y, Chae I, Kim S, Lee J . Swiprosin-1 stimulates cancer invasion and metastasis by increasing the Rho family of GTPase signaling. Oncotarget. 2015; 6(15):13060-71. PMC: 4536999. DOI: 10.18632/oncotarget.3637. View

2.
Jansen S, Collins A, Yang C, Rebowski G, Svitkina T, Dominguez R . Mechanism of actin filament bundling by fascin. J Biol Chem. 2011; 286(34):30087-96. PMC: 3191048. DOI: 10.1074/jbc.M111.251439. View

3.
Thylur R, Gowda R, Mishra S, Jun C . Swiprosin-1: Its Expression and Diverse Biological Functions. J Cell Biochem. 2017; 119(1):150-156. DOI: 10.1002/jcb.26199. View

4.
Pollard T . Actin and Actin-Binding Proteins. Cold Spring Harb Perspect Biol. 2016; 8(8). PMC: 4968159. DOI: 10.1101/cshperspect.a018226. View

5.
Papalazarou V, Machesky L . The cell pushes back: The Arp2/3 complex is a key orchestrator of cellular responses to environmental forces. Curr Opin Cell Biol. 2020; 68:37-44. PMC: 7938217. DOI: 10.1016/j.ceb.2020.08.012. View