ArticleClinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology2019
Rho and Rac, but not ROCK, are required for secretion of human and mouse eosinophil-associated RNases.
Article in Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed, 4 citations in OpenAlex.
- Targeting CD4⁺ T cell infiltration: mechanisms and therapeutic insights into CD4⁺ T cell transmigration across the blood-brain barrier in acute ischemic stroke.Fluids and barriers of the CNS · 2026Review
- Article
- Eosinophil cytolysis on Immunoglobulin G is associated with microtubule formation and suppression of rho-associated protein kinase signalling.Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology · 2020Article
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Authors and funding
3 authors at 1 institution in 2 countries.
Funding
Abstract
backgroundEosinophil-associated RNases (EARs) are stored preformed in eosinophil cytoplasmic secretory granules and have a key role in eosinophil effector functions in host defence and inflammatory disorders. However, the secretion mechanisms of EARs are poorly understood.
objectiveOur study aimed to understand the involvement of cytoskeleton machinery in EAR secretion.
methodsFresh human and mouse eosinophils were stimulated with CCL11, and the secretion of enzymatically active EARs was detected using an RNase activity assay. The involvement of cytoskeletal elements or microtubules was probed using specific inhibitors.
resultsWe found that dynamic polymerization of microtubules and cytoskeletal elements, such as Rho and Rac, is required for chemokine-mediated EAR secretion from human and mouse eosinophils. However, inhibition of ROCK (Rho-associated protein kinase) increased EAR secretion in human and mouse eosinophils even in the absence of chemokine stimulation, suggesting ROCK negatively regulates EAR secretion.
conclusionsCollectively, these data suggest a cytoskeleton-dependent mechanism of EAR secretion from eosinophils, findings that are pertinent to host defence, allergy and other eosinophil-associated diseases.
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