Vaccination of mice with Trichinella spiralis C-type lectin elicited the protective immunity and enhanced gut epithelial barrier function.

<h4>Background</h4>C-type lectin (CTL) plays an important act in parasite adhesion, host's cell invasion and immune escape. Our previous studies showed that recombinant Trichinella spiralis C-type lectin (rTsCTL) mediated larval invasion of enteral mucosal epithelium. The aim of thi...

Full description

Saved in:
Bibliographic Details
Main Authors: Bo Ning Wang, Xin Zhuo Zhang, Jin Yi Wu, Zhao Yu Zhang, Pei Kun Cong, Wen Wen Zheng, Shao Rong Long, Ruo Dan Liu, Jing Cui, Zhong Quan Wang
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2025-01-01
Series:PLoS Neglected Tropical Diseases
Online Access:https://doi.org/10.1371/journal.pntd.0012825
Tags: Add Tag
No Tags, Be the first to tag this record!
_version_ 1832542592586219520
author Bo Ning Wang
Xin Zhuo Zhang
Jin Yi Wu
Zhao Yu Zhang
Pei Kun Cong
Wen Wen Zheng
Shao Rong Long
Ruo Dan Liu
Jing Cui
Zhong Quan Wang
author_facet Bo Ning Wang
Xin Zhuo Zhang
Jin Yi Wu
Zhao Yu Zhang
Pei Kun Cong
Wen Wen Zheng
Shao Rong Long
Ruo Dan Liu
Jing Cui
Zhong Quan Wang
author_sort Bo Ning Wang
collection DOAJ
description <h4>Background</h4>C-type lectin (CTL) plays an important act in parasite adhesion, host's cell invasion and immune escape. Our previous studies showed that recombinant Trichinella spiralis C-type lectin (rTsCTL) mediated larval invasion of enteral mucosal epithelium. The aim of this study was to investigate protective immunity produced by vaccination with rTsCTL and its effect on gut epithelial barrier function in a mouse model.<h4>Methodology/principal finding</h4>The ELISA results showed that subcutaneous vaccination of mice with rTsCTL elicited a systemic humoral response (high levels of serum IgG, IgG1/IgG2a and IgA) and significant gut mucosal sIgA responses. The levels of Th1/Th2 cytokines (IFN-γ/IL-4) secreted from spleen, mesenteric lymph nodes and Peyer's patches were distinctly increased at 6 weeks following vaccination (P < 0.05). At one week after challenge, the numbers of goblet cells and expression level of Muc2, Muc5ac and pro-inflammatory cytokines (TNF-α and IL-1β) in gut tissues of vaccinated mice were obviously decreased, while expression of anti-inflammatory cytokines (IL-4 and IL-10) was evidently increased, compared to the infected PBS group. It is interesting that expression levels of gut epithelial tight junctions (TJs; occludin, claudin-1 and E-cad) were prominently elevated and intestinal permeability was interestingly declined in vaccinated mice. The rTsCTL-vaccinated mice exhibited a 51.69 and 48.19% reduction of intestinal adult and muscle larva burdens, respectively. The female fecundity in rTsCTL vaccinated mice was reduced by 40.51%. These findings indicated that rTsCTL vaccination impeded larval invasion and improved gut epithelial integrity and barrier function, reduced worm burdens, and relieved gut and muscle inflammation.<h4>Conclusions</h4>Vaccination of mice with rTsCTL elicited an obvious protective immunity against larval challenge, impeded larval invasion of gut mucosa, enhanced gut epithelial integrity and barrier function, reduced worm burdens; it also alleviated gut and muscle inflammation. TsCTL might be a novel candidate target molecule for anti-Trichinella vaccines.
format Article
id doaj-art-8fb337d4592341e6a46bcdc8118a924c
institution Kabale University
issn 1935-2727
1935-2735
language English
publishDate 2025-01-01
publisher Public Library of Science (PLoS)
record_format Article
series PLoS Neglected Tropical Diseases
spelling doaj-art-8fb337d4592341e6a46bcdc8118a924c2025-02-03T21:31:31ZengPublic Library of Science (PLoS)PLoS Neglected Tropical Diseases1935-27271935-27352025-01-01191e001282510.1371/journal.pntd.0012825Vaccination of mice with Trichinella spiralis C-type lectin elicited the protective immunity and enhanced gut epithelial barrier function.Bo Ning WangXin Zhuo ZhangJin Yi WuZhao Yu ZhangPei Kun CongWen Wen ZhengShao Rong LongRuo Dan LiuJing CuiZhong Quan Wang<h4>Background</h4>C-type lectin (CTL) plays an important act in parasite adhesion, host's cell invasion and immune escape. Our previous studies showed that recombinant Trichinella spiralis C-type lectin (rTsCTL) mediated larval invasion of enteral mucosal epithelium. The aim of this study was to investigate protective immunity produced by vaccination with rTsCTL and its effect on gut epithelial barrier function in a mouse model.<h4>Methodology/principal finding</h4>The ELISA results showed that subcutaneous vaccination of mice with rTsCTL elicited a systemic humoral response (high levels of serum IgG, IgG1/IgG2a and IgA) and significant gut mucosal sIgA responses. The levels of Th1/Th2 cytokines (IFN-γ/IL-4) secreted from spleen, mesenteric lymph nodes and Peyer's patches were distinctly increased at 6 weeks following vaccination (P < 0.05). At one week after challenge, the numbers of goblet cells and expression level of Muc2, Muc5ac and pro-inflammatory cytokines (TNF-α and IL-1β) in gut tissues of vaccinated mice were obviously decreased, while expression of anti-inflammatory cytokines (IL-4 and IL-10) was evidently increased, compared to the infected PBS group. It is interesting that expression levels of gut epithelial tight junctions (TJs; occludin, claudin-1 and E-cad) were prominently elevated and intestinal permeability was interestingly declined in vaccinated mice. The rTsCTL-vaccinated mice exhibited a 51.69 and 48.19% reduction of intestinal adult and muscle larva burdens, respectively. The female fecundity in rTsCTL vaccinated mice was reduced by 40.51%. These findings indicated that rTsCTL vaccination impeded larval invasion and improved gut epithelial integrity and barrier function, reduced worm burdens, and relieved gut and muscle inflammation.<h4>Conclusions</h4>Vaccination of mice with rTsCTL elicited an obvious protective immunity against larval challenge, impeded larval invasion of gut mucosa, enhanced gut epithelial integrity and barrier function, reduced worm burdens; it also alleviated gut and muscle inflammation. TsCTL might be a novel candidate target molecule for anti-Trichinella vaccines.https://doi.org/10.1371/journal.pntd.0012825
spellingShingle Bo Ning Wang
Xin Zhuo Zhang
Jin Yi Wu
Zhao Yu Zhang
Pei Kun Cong
Wen Wen Zheng
Shao Rong Long
Ruo Dan Liu
Jing Cui
Zhong Quan Wang
Vaccination of mice with Trichinella spiralis C-type lectin elicited the protective immunity and enhanced gut epithelial barrier function.
PLoS Neglected Tropical Diseases
title Vaccination of mice with Trichinella spiralis C-type lectin elicited the protective immunity and enhanced gut epithelial barrier function.
title_full Vaccination of mice with Trichinella spiralis C-type lectin elicited the protective immunity and enhanced gut epithelial barrier function.
title_fullStr Vaccination of mice with Trichinella spiralis C-type lectin elicited the protective immunity and enhanced gut epithelial barrier function.
title_full_unstemmed Vaccination of mice with Trichinella spiralis C-type lectin elicited the protective immunity and enhanced gut epithelial barrier function.
title_short Vaccination of mice with Trichinella spiralis C-type lectin elicited the protective immunity and enhanced gut epithelial barrier function.
title_sort vaccination of mice with trichinella spiralis c type lectin elicited the protective immunity and enhanced gut epithelial barrier function
url https://doi.org/10.1371/journal.pntd.0012825
work_keys_str_mv AT boningwang vaccinationofmicewithtrichinellaspiralisctypelectinelicitedtheprotectiveimmunityandenhancedgutepithelialbarrierfunction
AT xinzhuozhang vaccinationofmicewithtrichinellaspiralisctypelectinelicitedtheprotectiveimmunityandenhancedgutepithelialbarrierfunction
AT jinyiwu vaccinationofmicewithtrichinellaspiralisctypelectinelicitedtheprotectiveimmunityandenhancedgutepithelialbarrierfunction
AT zhaoyuzhang vaccinationofmicewithtrichinellaspiralisctypelectinelicitedtheprotectiveimmunityandenhancedgutepithelialbarrierfunction
AT peikuncong vaccinationofmicewithtrichinellaspiralisctypelectinelicitedtheprotectiveimmunityandenhancedgutepithelialbarrierfunction
AT wenwenzheng vaccinationofmicewithtrichinellaspiralisctypelectinelicitedtheprotectiveimmunityandenhancedgutepithelialbarrierfunction
AT shaoronglong vaccinationofmicewithtrichinellaspiralisctypelectinelicitedtheprotectiveimmunityandenhancedgutepithelialbarrierfunction
AT ruodanliu vaccinationofmicewithtrichinellaspiralisctypelectinelicitedtheprotectiveimmunityandenhancedgutepithelialbarrierfunction
AT jingcui vaccinationofmicewithtrichinellaspiralisctypelectinelicitedtheprotectiveimmunityandenhancedgutepithelialbarrierfunction
AT zhongquanwang vaccinationofmicewithtrichinellaspiralisctypelectinelicitedtheprotectiveimmunityandenhancedgutepithelialbarrierfunction