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Direct In Vivo Manipulation and Imaging of Calcium Transients in Neutrophils Identify a Critical Role for Leading-Edge Calcium Flux.

Publication ,  Journal Article
Beerman, RW; Matty, MA; Au, GG; Looger, LL; Choudhury, KR; Keller, PJ; Tobin, DM
Published in: Cell Rep
December 15, 2015

Calcium signaling has long been associated with key events of immunity, including chemotaxis, phagocytosis, and activation. However, imaging and manipulation of calcium flux in motile immune cells in live animals remain challenging. Using light-sheet microscopy for in vivo calcium imaging in zebrafish, we observe characteristic patterns of calcium flux triggered by distinct events, including phagocytosis of pathogenic bacteria and migration of neutrophils toward inflammatory stimuli. In contrast to findings from ex vivo studies, we observe enriched calcium influx at the leading edge of migrating neutrophils. To directly manipulate calcium dynamics in vivo, we have developed transgenic lines with cell-specific expression of the mammalian TRPV1 channel, enabling ligand-gated, reversible, and spatiotemporal control of calcium influx. We find that controlled calcium influx can function to help define the neutrophil's leading edge. Cell-specific TRPV1 expression may have broad utility for precise control of calcium dynamics in other immune cell types and organisms.

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Published In

Cell Rep

DOI

EISSN

2211-1247

Publication Date

December 15, 2015

Volume

13

Issue

10

Start / End Page

2107 / 2117

Location

United States

Related Subject Headings

  • Zebrafish
  • TRPV Cation Channels
  • Rats
  • Neutrophils
  • Microscopy, Fluorescence
  • Chemotaxis
  • Calcium Signaling
  • Calcium
  • Animals, Genetically Modified
  • Animals
 

Citation

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Beerman, R. W., Matty, M. A., Au, G. G., Looger, L. L., Choudhury, K. R., Keller, P. J., & Tobin, D. M. (2015). Direct In Vivo Manipulation and Imaging of Calcium Transients in Neutrophils Identify a Critical Role for Leading-Edge Calcium Flux. Cell Rep, 13(10), 2107–2117. https://doi.org/10.1016/j.celrep.2015.11.010
Beerman, Rebecca W., Molly A. Matty, Gina G. Au, Loren L. Looger, Kingshuk Roy Choudhury, Philipp J. Keller, and David M. Tobin. “Direct In Vivo Manipulation and Imaging of Calcium Transients in Neutrophils Identify a Critical Role for Leading-Edge Calcium Flux.Cell Rep 13, no. 10 (December 15, 2015): 2107–17. https://doi.org/10.1016/j.celrep.2015.11.010.
Beerman RW, Matty MA, Au GG, Looger LL, Choudhury KR, Keller PJ, et al. Direct In Vivo Manipulation and Imaging of Calcium Transients in Neutrophils Identify a Critical Role for Leading-Edge Calcium Flux. Cell Rep. 2015 Dec 15;13(10):2107–17.
Beerman, Rebecca W., et al. “Direct In Vivo Manipulation and Imaging of Calcium Transients in Neutrophils Identify a Critical Role for Leading-Edge Calcium Flux.Cell Rep, vol. 13, no. 10, Dec. 2015, pp. 2107–17. Pubmed, doi:10.1016/j.celrep.2015.11.010.
Beerman RW, Matty MA, Au GG, Looger LL, Choudhury KR, Keller PJ, Tobin DM. Direct In Vivo Manipulation and Imaging of Calcium Transients in Neutrophils Identify a Critical Role for Leading-Edge Calcium Flux. Cell Rep. 2015 Dec 15;13(10):2107–2117.
Journal cover image

Published In

Cell Rep

DOI

EISSN

2211-1247

Publication Date

December 15, 2015

Volume

13

Issue

10

Start / End Page

2107 / 2117

Location

United States

Related Subject Headings

  • Zebrafish
  • TRPV Cation Channels
  • Rats
  • Neutrophils
  • Microscopy, Fluorescence
  • Chemotaxis
  • Calcium Signaling
  • Calcium
  • Animals, Genetically Modified
  • Animals