Human Mast Cells Upregulate Cathepsin B, a Novel Marker of Itch in Psoriasis

Mast cells (MCs) contribute to skin inflammation. In psoriasis, the activation of cutaneous neuroimmune networks commonly leads to itch. To dissect the unique contribution of MCs to the cutaneous neuroinflammatory response in psoriasis, we examined their density, distribution, relation to nerve fibr...

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Main Authors: Peter W. West, Chiara Tontini, Haris Atmoko, Orsolya Kiss, Terence Garner, Rajia Bahri, Richard B. Warren, Christopher E. M. Griffiths, Adam Stevens, Silvia Bulfone-Paus
Format: Article
Language:English
Published: MDPI AG 2023-08-01
Series:Cells
Subjects:
Online Access:https://www.mdpi.com/2073-4409/12/17/2177
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author Peter W. West
Chiara Tontini
Haris Atmoko
Orsolya Kiss
Terence Garner
Rajia Bahri
Richard B. Warren
Christopher E. M. Griffiths
Adam Stevens
Silvia Bulfone-Paus
author_facet Peter W. West
Chiara Tontini
Haris Atmoko
Orsolya Kiss
Terence Garner
Rajia Bahri
Richard B. Warren
Christopher E. M. Griffiths
Adam Stevens
Silvia Bulfone-Paus
author_sort Peter W. West
collection DOAJ
description Mast cells (MCs) contribute to skin inflammation. In psoriasis, the activation of cutaneous neuroimmune networks commonly leads to itch. To dissect the unique contribution of MCs to the cutaneous neuroinflammatory response in psoriasis, we examined their density, distribution, relation to nerve fibres and disease severity, and molecular signature by comparing RNA-seq analysis of MCs isolated from the skin of psoriasis patients and healthy volunteers. In involved psoriasis skin, MCs and Calcitonin Gene-Related Peptide (CGRP)-positive nerve fibres were spatially associated, and the increase of both MC and nerve fibre density correlated with disease severity. Gene set enrichment analysis of differentially expressed genes in involved psoriasis skin showed significant representation of neuron-related pathways (i.e., regulation of neuron projection along with dendrite and dendritic spine morphogenesis), indicating MC engagement in neuronal development and supporting the evidence of close MC–nerve fibre interaction. Furthermore, the analysis of 208 identified itch-associated genes revealed that <i>CTSB</i>, <i>TLR4</i>, and <i>TACR1</i> were upregulated in MCs in involved skin. In both whole-skin published datasets and isolated MCs, <i>CTSB</i> was found to be a reliable indicator of the psoriasis condition. Furthermore, cathepsin B+ cells were increased in psoriasis skin and cathepsin B+ MC density correlated with disease severity. Therefore, our study provides evidence that cathepsin B could serve as a common indicator of the MC-dependent itch signature in psoriasis.
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spelling doaj.art-238c43347a2a4ea4bd312259b902c4962023-11-19T07:58:19ZengMDPI AGCells2073-44092023-08-011217217710.3390/cells12172177Human Mast Cells Upregulate Cathepsin B, a Novel Marker of Itch in PsoriasisPeter W. West0Chiara Tontini1Haris Atmoko2Orsolya Kiss3Terence Garner4Rajia Bahri5Richard B. Warren6Christopher E. M. Griffiths7Adam Stevens8Silvia Bulfone-Paus9Lydia Becker Institute of Immunology and Inflammation, Division of Musculoskeletal and Dermatological Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PT, UKLydia Becker Institute of Immunology and Inflammation, Division of Musculoskeletal and Dermatological Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PT, UKLydia Becker Institute of Immunology and Inflammation, Division of Musculoskeletal and Dermatological Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PT, UKLydia Becker Institute of Immunology and Inflammation, Division of Musculoskeletal and Dermatological Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PT, UKDivision of Developmental Biology and Medicine, Manchester Institute for Collaborative Research on Ageing, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester M23 9LT, UKLydia Becker Institute of Immunology and Inflammation, Division of Musculoskeletal and Dermatological Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PT, UKLydia Becker Institute of Immunology and Inflammation, Division of Musculoskeletal and Dermatological Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PT, UKLydia Becker Institute of Immunology and Inflammation, Division of Musculoskeletal and Dermatological Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PT, UKDivision of Developmental Biology and Medicine, Manchester Institute for Collaborative Research on Ageing, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester M23 9LT, UKLydia Becker Institute of Immunology and Inflammation, Division of Musculoskeletal and Dermatological Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PT, UKMast cells (MCs) contribute to skin inflammation. In psoriasis, the activation of cutaneous neuroimmune networks commonly leads to itch. To dissect the unique contribution of MCs to the cutaneous neuroinflammatory response in psoriasis, we examined their density, distribution, relation to nerve fibres and disease severity, and molecular signature by comparing RNA-seq analysis of MCs isolated from the skin of psoriasis patients and healthy volunteers. In involved psoriasis skin, MCs and Calcitonin Gene-Related Peptide (CGRP)-positive nerve fibres were spatially associated, and the increase of both MC and nerve fibre density correlated with disease severity. Gene set enrichment analysis of differentially expressed genes in involved psoriasis skin showed significant representation of neuron-related pathways (i.e., regulation of neuron projection along with dendrite and dendritic spine morphogenesis), indicating MC engagement in neuronal development and supporting the evidence of close MC–nerve fibre interaction. Furthermore, the analysis of 208 identified itch-associated genes revealed that <i>CTSB</i>, <i>TLR4</i>, and <i>TACR1</i> were upregulated in MCs in involved skin. In both whole-skin published datasets and isolated MCs, <i>CTSB</i> was found to be a reliable indicator of the psoriasis condition. Furthermore, cathepsin B+ cells were increased in psoriasis skin and cathepsin B+ MC density correlated with disease severity. Therefore, our study provides evidence that cathepsin B could serve as a common indicator of the MC-dependent itch signature in psoriasis.https://www.mdpi.com/2073-4409/12/17/2177mast cellscathepsin Bpsoriasisitch
spellingShingle Peter W. West
Chiara Tontini
Haris Atmoko
Orsolya Kiss
Terence Garner
Rajia Bahri
Richard B. Warren
Christopher E. M. Griffiths
Adam Stevens
Silvia Bulfone-Paus
Human Mast Cells Upregulate Cathepsin B, a Novel Marker of Itch in Psoriasis
Cells
mast cells
cathepsin B
psoriasis
itch
title Human Mast Cells Upregulate Cathepsin B, a Novel Marker of Itch in Psoriasis
title_full Human Mast Cells Upregulate Cathepsin B, a Novel Marker of Itch in Psoriasis
title_fullStr Human Mast Cells Upregulate Cathepsin B, a Novel Marker of Itch in Psoriasis
title_full_unstemmed Human Mast Cells Upregulate Cathepsin B, a Novel Marker of Itch in Psoriasis
title_short Human Mast Cells Upregulate Cathepsin B, a Novel Marker of Itch in Psoriasis
title_sort human mast cells upregulate cathepsin b a novel marker of itch in psoriasis
topic mast cells
cathepsin B
psoriasis
itch
url https://www.mdpi.com/2073-4409/12/17/2177
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