Interaction Between Macrophage Extracellular Traps and Colon Cancer Cells Promotes Colon Cancer Invasion and Correlates With Unfavorable Prognosis

BackgroundMacrophage extracellular traps (METs) and tumor-infiltrating macrophages contribute to the progression of several diseases. But the role of METs and tumor-infiltrating macrophages in colon cancer (CC) has not been illuminated. In this study, we aimed to clarify the prognostic value of METs...

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Autores principales: Tianli Chen, Yue Wang, Zhaodi Nan, Jie Wu, Ailu Li, Tingguo Zhang, Xun Qu, Chen Li
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Publicado: Frontiers Media S.A. 2021
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Acceso en línea:https://doaj.org/article/19841d9db9994f3292dc8a4808be0318
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spelling oai:doaj.org-article:19841d9db9994f3292dc8a4808be03182021-12-01T22:02:11ZInteraction Between Macrophage Extracellular Traps and Colon Cancer Cells Promotes Colon Cancer Invasion and Correlates With Unfavorable Prognosis1664-322410.3389/fimmu.2021.779325https://doaj.org/article/19841d9db9994f3292dc8a4808be03182021-12-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fimmu.2021.779325/fullhttps://doaj.org/toc/1664-3224BackgroundMacrophage extracellular traps (METs) and tumor-infiltrating macrophages contribute to the progression of several diseases. But the role of METs and tumor-infiltrating macrophages in colon cancer (CC) has not been illuminated. In this study, we aimed to clarify the prognostic value of METs for CC patients and to explore the interaction between CC cells and METs in vitro and in vivo.MethodsA training cohort consisting of 116 patients and a validation cohort of 94 patients were enrolled in this study. Immunofluorescence (IF) staining was conducted to determine METs formation in CC patients. Cox regression was used to perform prognostic analysis and screen out the best prognostic model. A nomogram was established to predict 5-year overall survival (OS). The correlation between METs with clinicopathological features and inflammatory markers was analyzed. The formation of METs in vitro was detected by SYTOX® green and IF staining, and the effect of METs on CC cells was detected by transwell assays. PAD2-IN-1, a selective inhibitor of peptidylarginine deiminase 2 (PAD2), was introduced to destroy the crosstalk between CC cells and METs in vitro and in vivo.ResultsMETs levels were higher in CC tissues and were an independent prognostic factor for CC patients. The prognostic model consisting of age, tumors local invasion, lymph node metastasis and METs were confirmed to be consistent and accurate for predicting the 5-year OS of CC patients. Besides, METs were correlated with distant metastasis and inflammation. Through in vitro experiments, we confirmed that there was a positive feedback loop between CC cells and METs, in that METs promoted the invasion of CC cells and CC cells enhanced the production of METs, in turn. This interaction could be blocked by PAD2-IN-1 inhibitors. More importantly, animal experiments revealed that PAD2-IN-1 inhibited METs formation and CC liver metastasis in vivo.ConclusionsMETs were the potential biomarker of CC patient prognosis. PAD2-IN-1 inhibited the crosstalk between CC cells and METs in vitro and in vivo, which should be emphasized in CC therapy.Tianli ChenTianli ChenYue WangZhaodi NanJie WuAilu LiTingguo ZhangXun QuChen LiFrontiers Media S.A.articlecolon cancermacrophage extracellular traps (METs)prognosisPAD2PAD2-IN-1Immunologic diseases. AllergyRC581-607ENFrontiers in Immunology, Vol 12 (2021)
institution DOAJ
collection DOAJ
language EN
topic colon cancer
macrophage extracellular traps (METs)
prognosis
PAD2
PAD2-IN-1
Immunologic diseases. Allergy
RC581-607
spellingShingle colon cancer
macrophage extracellular traps (METs)
prognosis
PAD2
PAD2-IN-1
Immunologic diseases. Allergy
RC581-607
Tianli Chen
Tianli Chen
Yue Wang
Zhaodi Nan
Jie Wu
Ailu Li
Tingguo Zhang
Xun Qu
Chen Li
Interaction Between Macrophage Extracellular Traps and Colon Cancer Cells Promotes Colon Cancer Invasion and Correlates With Unfavorable Prognosis
description BackgroundMacrophage extracellular traps (METs) and tumor-infiltrating macrophages contribute to the progression of several diseases. But the role of METs and tumor-infiltrating macrophages in colon cancer (CC) has not been illuminated. In this study, we aimed to clarify the prognostic value of METs for CC patients and to explore the interaction between CC cells and METs in vitro and in vivo.MethodsA training cohort consisting of 116 patients and a validation cohort of 94 patients were enrolled in this study. Immunofluorescence (IF) staining was conducted to determine METs formation in CC patients. Cox regression was used to perform prognostic analysis and screen out the best prognostic model. A nomogram was established to predict 5-year overall survival (OS). The correlation between METs with clinicopathological features and inflammatory markers was analyzed. The formation of METs in vitro was detected by SYTOX® green and IF staining, and the effect of METs on CC cells was detected by transwell assays. PAD2-IN-1, a selective inhibitor of peptidylarginine deiminase 2 (PAD2), was introduced to destroy the crosstalk between CC cells and METs in vitro and in vivo.ResultsMETs levels were higher in CC tissues and were an independent prognostic factor for CC patients. The prognostic model consisting of age, tumors local invasion, lymph node metastasis and METs were confirmed to be consistent and accurate for predicting the 5-year OS of CC patients. Besides, METs were correlated with distant metastasis and inflammation. Through in vitro experiments, we confirmed that there was a positive feedback loop between CC cells and METs, in that METs promoted the invasion of CC cells and CC cells enhanced the production of METs, in turn. This interaction could be blocked by PAD2-IN-1 inhibitors. More importantly, animal experiments revealed that PAD2-IN-1 inhibited METs formation and CC liver metastasis in vivo.ConclusionsMETs were the potential biomarker of CC patient prognosis. PAD2-IN-1 inhibited the crosstalk between CC cells and METs in vitro and in vivo, which should be emphasized in CC therapy.
format article
author Tianli Chen
Tianli Chen
Yue Wang
Zhaodi Nan
Jie Wu
Ailu Li
Tingguo Zhang
Xun Qu
Chen Li
author_facet Tianli Chen
Tianli Chen
Yue Wang
Zhaodi Nan
Jie Wu
Ailu Li
Tingguo Zhang
Xun Qu
Chen Li
author_sort Tianli Chen
title Interaction Between Macrophage Extracellular Traps and Colon Cancer Cells Promotes Colon Cancer Invasion and Correlates With Unfavorable Prognosis
title_short Interaction Between Macrophage Extracellular Traps and Colon Cancer Cells Promotes Colon Cancer Invasion and Correlates With Unfavorable Prognosis
title_full Interaction Between Macrophage Extracellular Traps and Colon Cancer Cells Promotes Colon Cancer Invasion and Correlates With Unfavorable Prognosis
title_fullStr Interaction Between Macrophage Extracellular Traps and Colon Cancer Cells Promotes Colon Cancer Invasion and Correlates With Unfavorable Prognosis
title_full_unstemmed Interaction Between Macrophage Extracellular Traps and Colon Cancer Cells Promotes Colon Cancer Invasion and Correlates With Unfavorable Prognosis
title_sort interaction between macrophage extracellular traps and colon cancer cells promotes colon cancer invasion and correlates with unfavorable prognosis
publisher Frontiers Media S.A.
publishDate 2021
url https://doaj.org/article/19841d9db9994f3292dc8a4808be0318
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