Cited by 442Mast cells and histamineProtease and Inhibitor MechanismsAsthma and respiratory diseases

Mast cell tryptases and chymases in inflammation and host defense.

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Caughey, George H.·2007·Immunological Reviews

Abstract

Tryptases and chymases are the major proteins stored and secreted by mast cells. The types, amounts, and properties of these serine peptidases vary by mast cell subtype, tissue, and mammal of origin. Membrane-anchored gamma-tryptases are tryptic, prostasin-like, type I peptidases that remain membrane attached on release and act locally. Soluble tryptases, including their close relatives, mastins, form inhibitor-resistant oligomers that act more remotely. Befitting their greater destructive potential, chymases are quickly inhibited after release, although some gain protection by associating with proteoglycans. Most chymase-like enzymes, including mast cell cathepsin G, hydrolyze chymotryptic substrates, an uncommon capability in the proteome. Some rodent chymases, however, have mutations resulting in elastolytic activity. Secreted tryptases and chymases promote inflammation, matrix destruction, and tissue remodeling by several mechanisms, including destroying procoagulant, matrix, growth, and differentiation factors and activating proteinase-activated receptors, urokinase, metalloproteinases, and angiotensin. They also modulate immune responses by hydrolyzing chemokines and cytokines. At least one chymase protects mice from intestinal worms. Tryptases and chymases can also oppose inflammation by inactivating allergens and neuropeptides causing inflammation and bronchoconstriction. Thus, like mast cells themselves, mast cell serine peptidases play multiple roles in host defense, and any accounting of benefit versus harm is necessarily context specific.

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Crossref · 10.1111/j.1600-065x.2007.00509.x

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  • Mast cell degranulation releases histamine, MMPs, tryptase and VEGF, which are involved in the attachment and posterior invasion of the embryo into the uterus.

    “their degranulation causes the release of pivotal factors, e.g., histamine, MMPs, tryptase and VEGF, which are known to be involved in the attachment and posterior invasion of the embryo into the uterus.”

    From Estradiol and Progesterone Regulate the Migration of Mast Cells from the Periphery to the Uterus and Induce Their Maturation and Degranulation (2010) · cites this paper as [30]

    The Introduction (page unavailable) says mast-cell degranulation releases tryptase and histamine, and separately describes mast-cell proteases activating MMP-9. It does not establish that degranulation releases all four listed factors or that they participate in embryo attachment and invasion into the uterus; searches for implantation and VEGF did not find that connection. (LLM, conf=0.87)

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Authors
Caughey, G. H.
Affiliations
San Francisco VA Medical Center (US)
Corresponding author
Caughey, George H.
Venue
Immunological Reviews
Publisher
Wiley
Published
2007-05-07
Volume
217
Issue
1
Pages
141-154
ISSN
  • 0105-2896 (ISSN-L)
  • 1600-065X
OpenAlex
W1993305093
Cited by
442
References
142
Citations by year
2026: 9 · 2025: 16 · 2024: 27 · 2023: 27 · 2022: 23 · 2021: 24 · 2020: 24 · 2019: 28 · 2018: 19 · 2017: 22 · 2016: 19 · 2015: 23 · 2014: 28 · 2013: 33 · 2012: 22
FWCI
2.00
Type
journal article
Language
en
Open access
Locations
  • Immunological Reviews (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Heart, Lung, and Blood Institute (HL024136, P01HL024136)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Mast cells and histamine
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Protease and Inhibitor Mechanisms
  • Health Sciences › Medicine › Physiology › Asthma and respiratory diseases
Keywords
mast cells, tryptase, chymase, serine protease, prostasin, cathepsin G, protease inhibitors, proteoglycans, protease-activated receptors, urokinase, matrix metalloproteinases, angiotensin, intestinal worm infection, allergen inactivation, neuropeptide inactivation, inflammation, tissue remodeling, host defense
MeSH terms
Animals, Humans, Inflammation, Mast Cells, Serine Endopeptidases, Tryptases, Chymases

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