» Articles » PMID: 9449313

Oscillatory Pericellular Proteolysis and Oxidant Deposition During Neutrophil Locomotion

Overview
Journal Biophys J
Publisher Cell Press
Specialty Biophysics
Date 1998 Feb 4
PMID 9449313
Citations 25
Authors
Affiliations
Soon will be listed here.
Abstract

To better understand the mechanism of leukocyte migration in complex environments, model extracellular matrices were prepared using gelatin, Hanks' solution, Bodipy-BSA (fluorescent upon proteolysis), and dihydrotetramethylrosamine or hydroethidine (fluorescent upon oxidation). Using quantitative microfluorometry, neutrophil-mediated extracellular pulses of reactive oxygen metabolites (ROMs) and pericellular proteolysis were periodically observed showing that these functions occur as quantal bursts. However, chronic granulomatous disease neutrophils, which do not produce ROMs, did not display ROM deposition. Matrices show an alternating pattern of green (proteolytic) and red (oxidative) fluorescence, indicating these functions are out of phase. Electric fields phase-matched with metabolic oscillations, which increase the amplitude of intracellular NAD(P)H oscillations, increase ROM deposition and pericellular proteolysis; this further supports the link between intracellular chemical oscillators and extracellular functions. This phase relationship may allow ROMs to inactivate protease inhibitors, followed by protease activation.

Citing Articles

Self-Organization and Information Processing: From Basic Enzymatic Activities to Complex Adaptive Cellular Behavior.

De la Fuente I, Martinez L, Carrasco-Pujante J, Fedetz M, Lopez J, Malaina I Front Genet. 2021; 12:644615.

PMID: 34093645 PMC: 8176287. DOI: 10.3389/fgene.2021.644615.


Therapeutic targeting of neutrophil exocytosis.

Catz S, McLeish K J Leukoc Biol. 2020; 107(3):393-408.

PMID: 31990103 PMC: 7044074. DOI: 10.1002/JLB.3RI0120-645R.


Elements of the cellular metabolic structure.

De la Fuente I Front Mol Biosci. 2015; 2:16.

PMID: 25988183 PMC: 4428431. DOI: 10.3389/fmolb.2015.00016.


Time and Demand are Two Critical Dimensions of Immunometabolism: The Process of Macrophage Activation and the Pentose Phosphate Pathway.

Nagy C, Haschemi A Front Immunol. 2015; 6:164.

PMID: 25904920 PMC: 4389563. DOI: 10.3389/fimmu.2015.00164.


αβ Integrin Regulation of Respiratory Burst in Fibrinogen Adherent Human Neutrophils.

Kim H, Skokos E, Myer D, Agaba P, Gonzalez A Cell Mol Bioeng. 2015; 7(2):231-242.

PMID: 25632307 PMC: 4306468. DOI: 10.1007/s12195-014-0322-2.


References
1.
Maher R, Cao D, Boxer L, Petty H . Simultaneous calcium-dependent delivery of neutrophil lactoferrin and reactive oxygen metabolites to erythrocyte targets: evidence supporting granule-dependent triggering of superoxide deposition. J Cell Physiol. 1993; 156(2):226-34. DOI: 10.1002/jcp.1041560203. View

2.
Gyetko M, Todd 3rd R, Wilkinson C, Sitrin R . The urokinase receptor is required for human monocyte chemotaxis in vitro. J Clin Invest. 1994; 93(4):1380-7. PMC: 294150. DOI: 10.1172/JCI117114. View

3.
RYAN T, Weil G, Newburger P, Haugland R, Simons E . Measurement of superoxide release in the phagovacuoles of immune complex-stimulated human neutrophils. J Immunol Methods. 1990; 130(2):223-33. DOI: 10.1016/0022-1759(90)90052-w. View

4.
Farmer W, Yuan Z . A continuous fluorescent assay for measuring protease activity using natural protein substrate. Anal Biochem. 1991; 197(2):347-52. DOI: 10.1016/0003-2697(91)90403-g. View

5.
Twining S . Fluorescein isothiocyanate-labeled casein assay for proteolytic enzymes. Anal Biochem. 1984; 143(1):30-4. DOI: 10.1016/0003-2697(84)90553-0. View