Basic Study
Copyright ©The Author(s) 2021. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Gastroenterol. Sep 21, 2021; 27(35): 5946-5957
Published online Sep 21, 2021. doi: 10.3748/wjg.v27.i35.5946
Proteomics identifies a novel role of fibrinogen-like protein 1 in Crohn’s disease
Xue-Liang Sun, Li-Chao Qiao, Jing Gong, Ke Wen, Zhi-Zhong Xu, Bo-Lin Yang
Xue-Liang Sun, Li-Chao Qiao, Jing Gong, Bo-Lin Yang, First Clinical Medical College, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, Jiangsu Province, China
Xue-Liang Sun, Ke Wen, Zhi-Zhong Xu, Department of Colorectal Surgery, Suzhou TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou 215000, Jiangsu Province, China
Bo-Lin Yang, Department of Colorectal Surgery, Jiangsu Province Hospital of Chinese Medicine, Nanjing 210029, Jiangsu Province, China
Author contributions: Sun XL and Yang BL contributed to designing the study; Sun XL, Qiao LC and Gong J contributed to performing the experiments; Wen K and Xu ZZ contributed to sample collection and statistical analysis; Sun XL and Qiao LC contributed to manuscript drafting; all authors made critical revisions to the manuscript and approved the final version of the article to be published.
Supported by National Natural Science Foundation of China, No. 82074431; The Open Projects of the Discipline of Chinese Medicine of Nanjing University of Chinese Medicine Supported by the Subject of Academic Priority Discipline of Jiangsu Higher Education Institutions, No. ZYX03KF034; and Suzhou Municipal Science and Technology Bureau, No. SYSD2020253 and No. SS202085.
Institutional review board statement: The study was approved by the Ethics Committee of the Affiliated Hospital of Nanjing University of Chinese Medicine (2018NL-171-02).
Conflict-of-interest statement: To the best of our knowledge, no conflict of interest exists.
Data sharing statement: No additional data are available.
Open-Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See:
Corresponding author: Bo-Lin Yang, MD, Chief Doctor, First Clinical Medical College, The Affiliated Hospital of Nanjing University of Chinese Medicine, No. 155 Hanzhong Road, Nanjing 210029, Jiangsu Province, China.
Received: March 5, 2021
Peer-review started: March 5, 2021
First decision: April 5, 2021
Revised: April 7, 2021
Accepted: August 10, 2021
Article in press: August 10, 2021
Published online: September 21, 2021
Core Tip

Core Tip: In this study, fibrinogen-like protein 1 (FGL1) was identified to be significantly upregulated in the plasma and intestinal mucosa of Crohn’s disease (CD) patients. In vitro, silencing FGL1 downregulated the levels of the proinflammatory cytokines IL-1β, IL-6, IL-17, and TNF-α. Furthermore, FGL1 knockdown suppressed the mRNA expression of NF-κB and the protein levels of IKKα, IKKβ, p-IKKα/β, p-IκBα, and p-p65. These results could be reversed by the overexpression of FGL1. Taken together, these data suggest that FGL1 may induce intestinal inflammation by activating the canonical NF-κB signalling pathway and has the potential to be a therapeutic target for CD.