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Geng Z, Li J, Zuo L, Zhang X, Wang L, Xia Y, Yang J, Yin L, Song X, Wang Y, Chai D, Deng M, Ge Y, Wu R, Hu J. Intestinal Adipocytes Transdifferentiate into Myofibroblast-like Cells and Contribute to Fibrosis in Crohn's Disease. J Crohns Colitis 2024; 18:1292-1304. [PMID: 38466138 DOI: 10.1093/ecco-jcc/jjae036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 03/02/2024] [Accepted: 03/09/2024] [Indexed: 03/12/2024]
Abstract
BACKGROUND AND AIMS Intestinal fibrotic stenosis is a major reason for surgery in Crohn's disease [CD], but the mechanism is unknown. Thus, we asked whether intestinal adipocytes contribute to intestinal fibrosis. Adipocytes were found to transdifferentiate into myofibroblasts and confirmed to be involved in mesenteric fibrosis in our recent study. Here, we investigated the role and possible mechanisms of intestinal adipocytes in intestinal fibrosis in CD. METHODS The intestinal tissue of patients with CD with or without fibrotic stenosis [CDS or CDN] and normal intestinal tissue from individuals without CD were obtained to assess alterations in submucosal adipocytes in CDS and whether these cells transdifferentiated into myofibroblasts and participated in the fibrotic process. Human primary adipocytes and adipose organoids were used to evaluate whether adipocytes could be induced to transdifferentiate into myofibroblasts and to investigate the fibrotic behaviour of adipocytes. LPS/TLR4/TGF-β signalling was also studied to explore the underlying mechanism. RESULTS Submucosal adipocytes were reduced in number or even absent in CDS tissue, and the extent of the reduction correlated negatively with the degree of submucosal fibrosis. Interestingly, submucosal adipocytes in CDS tissue transdifferentiated into myofibroblast-like cells and expressed collagenous components, possibly due to stimulation by submucosally translocated bacteria. Lipopolysaccharide [LPS]-stimulated human primary adipocytes and adipose organoids also exhibited transdifferentiation and profibrotic behaviour. Mechanistically, TLR4-mediated TGF-β signalling was associated with the transdifferentiation and profibrotic behaviour of intestinal adipocytes in CDS tissue. CONCLUSIONS Intestinal adipocytes transdifferentiate into myofibroblasts and participate in the intestinal fibrosis process in CD, possibly through LPS/TLR4/TGF-β signalling.
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Affiliation(s)
- Zhijun Geng
- Department of Central Laboratory, First Affiliated Hospital of Bengbu Medical University, Bengbu, China
- Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Bengbu Medical University, Bengbu, China
- Inflammatory Bowel Disease Research Center, First Affiliated Hospital of Bengbu Medical University, Bengbu, China
| | - Jing Li
- Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Bengbu Medical University, Bengbu, China
- Inflammatory Bowel Disease Research Center, First Affiliated Hospital of Bengbu Medical University, Bengbu, China
- Department of Clinical Laboratory, First Affiliated Hospital of Bengbu Medical University, Bengbu, China
| | - Lugen Zuo
- Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Bengbu Medical University, Bengbu, China
- Inflammatory Bowel Disease Research Center, First Affiliated Hospital of Bengbu Medical University, Bengbu, China
- Department of Gastrointestinal Surgery, First Affiliated Hospital of Bengbu Medical University, Bengbu, Anhui, China
| | - Xiaofeng Zhang
- Department of Central Laboratory, First Affiliated Hospital of Bengbu Medical University, Bengbu, China
- Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Bengbu Medical University, Bengbu, China
- Inflammatory Bowel Disease Research Center, First Affiliated Hospital of Bengbu Medical University, Bengbu, China
| | - Lian Wang
- Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Bengbu Medical University, Bengbu, China
- Department of Gastrointestinal Surgery, First Affiliated Hospital of Bengbu Medical University, Bengbu, Anhui, China
| | - Yongsheng Xia
- Department of Gastrointestinal Surgery, First Affiliated Hospital of Bengbu Medical University, Bengbu, Anhui, China
| | - Jingjing Yang
- Department of Gastrointestinal Surgery, First Affiliated Hospital of Bengbu Medical University, Bengbu, Anhui, China
| | - Lixia Yin
- Department of Clinical Laboratory, First Affiliated Hospital of Bengbu Medical University, Bengbu, China
| | - Xue Song
- Department of Central Laboratory, First Affiliated Hospital of Bengbu Medical University, Bengbu, China
- Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Bengbu Medical University, Bengbu, China
- Inflammatory Bowel Disease Research Center, First Affiliated Hospital of Bengbu Medical University, Bengbu, China
| | - Yueyue Wang
- Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Bengbu Medical University, Bengbu, China
- Inflammatory Bowel Disease Research Center, First Affiliated Hospital of Bengbu Medical University, Bengbu, China
- Department of Clinical Laboratory, First Affiliated Hospital of Bengbu Medical University, Bengbu, China
| | - Damin Chai
- Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Bengbu Medical University, Bengbu, China
- Department of Pathology, First Affiliated Hospital of Bengbu Medical University, Bengbu, China
| | - Min Deng
- Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Bengbu Medical University, Bengbu, China
- Department of Gastroenterology, First Affiliated Hospital of Bengbu Medical University, Bengbu, China
| | - Yuanyuan Ge
- Department of Colorectal Surgery, Third Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Rong Wu
- Department of General Surgery, Zhongda Hospital, Southeast University, Nanjing, China
| | - Jianguo Hu
- Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Bengbu Medical University, Bengbu, China
- Inflammatory Bowel Disease Research Center, First Affiliated Hospital of Bengbu Medical University, Bengbu, China
- Department of Clinical Laboratory, First Affiliated Hospital of Bengbu Medical University, Bengbu, China
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Duan M, Coffey JC, Li Y. Mesenteric-based surgery for Crohn's disease: evidence and perspectives. Surgery 2024; 176:51-59. [PMID: 38594102 DOI: 10.1016/j.surg.2024.02.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Revised: 01/20/2024] [Accepted: 02/26/2024] [Indexed: 04/11/2024]
Abstract
Postoperative anastomotic recurrence of Crohn's disease is challenging and can lead to symptom recurrence and further surgery. The mesenteric pole of the intestine is the initial site of macroscopic anastomotic recurrence, and the mesentery may play an important role in recurrence after surgical resection. Therefore, "mesenteric-based surgery" has gained increasing attention by clinicians. However, the role of mesentery in the postoperative recurrence remains controversial. This review will examine mesenteric changes in Crohn's disease, proposed roles for mesentery in disease progression, and the potential for mesenteric-based surgery in the surgical management of Crohn disease.
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Affiliation(s)
- Ming Duan
- Center for Inflammatory Bowel Diseases, Department of General Surgery, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, China
| | - J Calvin Coffey
- Department of Surgery, University of Limerick Hospital Group, and School of Medicine, University of Limerick, Limerick, Ireland.
| | - Yi Li
- Center for Inflammatory Bowel Diseases, Department of General Surgery, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, China
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Huang Q, Liu JW, Dong HB, Wei ZJ, Liu JZ, Ren YT, Jiang X, Jiang B. Mesenteric adipose tissue B lymphocytes promote intestinal injury in severe acute pancreatitis by mediating enteric pyroptosis. Hepatobiliary Pancreat Dis Int 2024; 23:300-309. [PMID: 38057185 DOI: 10.1016/j.hbpd.2023.11.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Accepted: 11/17/2023] [Indexed: 12/08/2023]
Abstract
BACKGROUND Visceral adipose tissue (VAT) has been linked to the severe acute pancreatitis (SAP) prognosis, although the underlying mechanism remains unclear. It has been reported that pyroptosis worsens SAP. The present study aimed to verify whether mesenteric adipose tissue (MAT, a component of VAT) can cause secondary intestinal injury through the pyroptotic pathway. METHODS Thirty-six male Sprague Dawley (SD) rats were divided into six different groups. Twelve rats were randomly divided into the SAP and control groups. We monitored the changes of MAT and B lymphocytes infiltration in MAT of SAP rats. Twelve SAP rats were injected with MAT B lymphocytes or phosphate buffer solution (PBS). The remaining twelve SAP rats were first injected with MAT B lymphocytes, and then with MCC950 (NLRP3 inhibitor) or PBS. We collected blood and tissue samples from pancreas, gut and MAT for analysis. RESULTS Compared to the control rats, the SAP group showed inflammation in MAT, including higher expression of tumor necrosis factor (TNF-α) and interleukin-6 (IL-6), lower expression of IL-10, and histological changes. Flow cytometry analysis revealed B lymphocytes infiltration in MAT but not T lymphocytes and macrophages. The SAP rats also exhibited intestinal injury, characterized by lower expression of zonula occludens-1 (ZO-1) and occludin, higher levels of lipopolysaccharide and diamine oxidase, and pathological changes. The expression of NLRP3 and n-GSDMD, which are responsible for pyroptosis, was increased in the intestine of SAP rats. The injection of MAT B lymphocytes into SAP rats exacerbated the inflammation in MAT. The upregulation of pyroptosis reduced tight junction in the intestine, which contributed to the SAP progression, including higher inflammatory indicators and worse histological changes. The administration of MCC950 to SAP + MAT B rats downregulated pyroptosis, which subsequently improved the intestinal barrier and ameliorated inflammatory response of SAP. CONCLUSIONS In SAP, MAT B lymphocytes aggravated local inflammation, and promoted the injury to the intestine through the enteric pyroptotic pathway.
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Affiliation(s)
- Qing Huang
- Department of Gastroenterology, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, China
| | - Jia-Wen Liu
- Department of Gastroenterology, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, China
| | - Hai-Bin Dong
- Department of Gastroenterology, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, China
| | - Zheng-Jie Wei
- Department of Gastroenterology, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, China
| | - Jin-Zhe Liu
- Department of Gastroenterology, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, China
| | - Yu-Tang Ren
- Department of Gastroenterology, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, China
| | - Xuan Jiang
- Department of Gastroenterology, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, China.
| | - Bo Jiang
- Department of Gastroenterology, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, China
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Xiao J, Guo X, Wang Z. Crosstalk between hypoxia-inducible factor-1α and short-chain fatty acids in inflammatory bowel disease: key clues toward unraveling the mystery. Front Immunol 2024; 15:1385907. [PMID: 38605960 PMCID: PMC11007100 DOI: 10.3389/fimmu.2024.1385907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Accepted: 03/19/2024] [Indexed: 04/13/2024] Open
Abstract
The human intestinal tract constitutes a complex ecosystem, made up of countless gut microbiota, metabolites, and immune cells, with hypoxia being a fundamental environmental characteristic of this ecology. Under normal physiological conditions, a delicate balance exists among these complex "residents", with disruptions potentially leading to inflammatory bowel disease (IBD). The core pathology of IBD features a disrupted intestinal epithelial barrier, alongside evident immune and microecological disturbances. Central to these interconnected networks is hypoxia-inducible factor-1α (HIF-1α), which is a key regulator in gut cells for adapting to hypoxic conditions and maintaining gut homeostasis. Short-chain fatty acids (SCFAs), as pivotal gut metabolites, serve as vital mediators between the host and microbiota, and significantly influence intestinal ecosystem. Recent years have seen a surge in research on the roles and therapeutic potential of HIF-1α and SCFAs in IBD independently, yet reviews on HIF-1α-mediated SCFAs regulation of IBD under hypoxic conditions are scarce. This article summarizes evidence of the interplay and regulatory relationship between SCFAs and HIF-1α in IBD, pivotal for elucidating the disease's pathogenesis and offering promising therapeutic strategies.
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Affiliation(s)
- Jinyin Xiao
- Graduate School, Hunan University of Traditional Chinese Medicine, Changsha, China
- Department of Anorectal, the Second Affiliated Hospital of Hunan University of Traditional Chinese Medicine, Changsha, China
| | - Xiajun Guo
- Department of Geriatric, the First People’s Hospital of Xiangtan City, Xiangtan, China
| | - Zhenquan Wang
- Department of Anorectal, the Second Affiliated Hospital of Hunan University of Traditional Chinese Medicine, Changsha, China
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Deng H, Jia Q, Ming X, Sun Y, Lu Y, Liu L, Zhou J. Hippo pathway in intestinal diseases: focusing on ferroptosis. Front Cell Dev Biol 2023; 11:1291686. [PMID: 38130953 PMCID: PMC10734691 DOI: 10.3389/fcell.2023.1291686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Accepted: 11/22/2023] [Indexed: 12/23/2023] Open
Abstract
The incidence of intestinal diseases, such as inflammatory bowel disease, gastric cancer, and colorectal cancer, has steadily increased over the past decades. The Hippo pathway is involved in cell proliferation, tissue and organ damage, energy metabolism, tumor formation, and other physiologic processes. Ferroptosis is a form of programmed cell death characterized by the accumulation of iron and lipid peroxides. The Hippo pathway and ferroptosis are associated with various intestinal diseases; however, the crosstalk between them is unclear. This review elaborates on the current research on the Hippo pathway and ferroptosis in the context of intestinal diseases. We summarized the connection between the Hippo pathway and ferroptosis to elucidate the underlying mechanism by which these pathways influence intestinal diseases. We speculate that a mutual regulatory mechanism exists between the Hippo pathway and ferroptosis and these two pathways interact in several ways to regulate intestinal diseases.
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Affiliation(s)
- Hongwei Deng
- Department of Anesthesiology, Southwest Medical University, Luzhou, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Luzhou, China
| | - Qiuting Jia
- Department of Anesthesiology, Southwest Medical University, Luzhou, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Luzhou, China
| | - Xin Ming
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Luzhou, China
- School of Clinical Medicine, Southwest Medical University, Luzhou, China
| | - Yuxin Sun
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Luzhou, China
- School of Basic Medicine, Southwest Medical University, Luzhou, China
| | - Yuxuan Lu
- Department of Anesthesiology, Southwest Medical University, Luzhou, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Luzhou, China
| | - Li Liu
- Department of Anesthesiology, Southwest Medical University, Luzhou, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Luzhou, China
- Department of Anesthesiology, The Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan, China
| | - Jun Zhou
- Department of Anesthesiology, Southwest Medical University, Luzhou, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Luzhou, China
- Department of Anesthesiology, The Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan, China
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6
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Hwang N, Kang D, Shin SJ, Yoon BK, Chun J, Kim JW, Fang S. Creeping fat exhibits distinct Inflammation-specific adipogenic preadipocytes in Crohn's disease. Front Immunol 2023; 14:1198905. [PMID: 38111581 PMCID: PMC10725931 DOI: 10.3389/fimmu.2023.1198905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Accepted: 11/17/2023] [Indexed: 12/20/2023] Open
Abstract
Creeping fat (CrF) is an extraintestinal manifestation observed in patients with Crohn's disease (CD). It is characterized by the accumulation of mesenteric adipose tissue (MAT) that wraps around the intestinal wall. Although the role of CrF in CD is still debated, multiple studies have highlighted a correlation between CrF and inflammation, as well as fibrostenosais of the intestine, which contributes to the worsening of CD symptoms. However, the mechanism underlying the potential role of CrF in the development of Crohn's fibrosis remains an enigma. This study aimed to analyze CrF comprehensively using single-cell RNA sequencing analysis. The data was compared with transcriptomic data from adipose tissue in other disease conditions, such as ulcerative colitis, lymphedema, and obesity. Our analysis classified two lineages of preadipocyte (PAC) clusters responsible for adipogenesis and fibrosis in CrF. Committed PACs in CrF showed increased cytokine expression in response to bacterial stimuli, potentially worsening inflammation in patients with CD. We also observed an increase in fibrotic activity in PAC clusters in CrF. Co-analyzing the data from patients with lymphedema, we found that pro-fibrotic PACs featured upregulated pentraxin-3 expression, suggesting a potential target for the treatment of fibrosis in CrF. Furthermore, PACs in CrF exhibited a distinct increase in cell-to-cell communication via cytokines related to inflammation and fibrosis, such as CCL, LIGHT, PDGF, MIF, and SEMA3. Interestingly, these interactions also increased in PACs of the lymphedema, whereas the increased MIF signal of PACs was found to be a distinct characteristic of CrF. In immune cell clusters in CrF, we observed high immune activity of pro-inflammatory macrophages, antigen-presenting macrophages, B cells, and IgG+ plasma cells. Finally, we have demonstrated elevated IgG+ plasma cell infiltration and increased pentraxin-3 protein levels in the fibrotic regions of CrF in CD patients when compared to MAT from both UC patients and healthy individuals. These findings provide new insights into the transcriptomic features related to the inflammation of cells in CrF and suggest potential targets for attenuating fibrosis in CD.
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Affiliation(s)
- Nahee Hwang
- Department of Biochemistry and Molecular Biology, Yonsei University College of Medicine, Seoul, Republic of Korea
- Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, Republic of Korea
- Chronic Intractable Disease for Systems Medicine Research Center, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Dongwoo Kang
- Department of Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Su-Jin Shin
- Department of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Bo Kyung Yoon
- Department of Biochemistry and Molecular Biology, Yonsei University College of Medicine, Seoul, Republic of Korea
- Chronic Intractable Disease for Systems Medicine Research Center, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jaeyoung Chun
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jae-woo Kim
- Department of Biochemistry and Molecular Biology, Yonsei University College of Medicine, Seoul, Republic of Korea
- Chronic Intractable Disease for Systems Medicine Research Center, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Sungsoon Fang
- Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, Republic of Korea
- Chronic Intractable Disease for Systems Medicine Research Center, Yonsei University College of Medicine, Seoul, Republic of Korea
- Department of Biomedical Sciences, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
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Chai J, Wang N, Chen L, Bai J, Zhang J, Zhang G, An J, Zhang T, Tong X, Wu Y, Li M, Jin L. Identification of a Novel Long Non-Coding RNA G8110 That Modulates Porcine Adipogenic Differentiation and Inflammatory Responses. Int J Mol Sci 2023; 24:16799. [PMID: 38069122 PMCID: PMC10706401 DOI: 10.3390/ijms242316799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 11/14/2023] [Accepted: 11/24/2023] [Indexed: 12/18/2023] Open
Abstract
Long non-coding RNAs (lncRNAs) have been extensively studied, and their crucial roles in adipogenesis, lipid metabolism, and gene expression have been revealed. However, the exact regulatory or other mechanisms by which lncRNAs influence the functioning of mesenteric adipose tissue (MAT) remain largely unknown. In this paper, we report the identification of a new lncRNA, named G8110, from the MAT of Bama pigs. The coordinated expression levels of lncRNA G8110 and NFE2L1 were significantly decreased in the MAT of obese Bama pigs compared with those in the MAT of lean pigs. Using a bone mesenchymal stem cell adipogenic differentiation model, we found that lncRNA G8110 played a role in adipocyte differentiation by positively regulating NFE2L1. We also found that lncRNA G8110 inhibited the formation of intracellular lipid synthesis, promoted lipid metabolism, and inhibited the expression of inflammatory cytokines. Our findings regarding lipid synthesis may further promote the role of lncRNAs in driving adipose tissue remodeling and maintaining metabolic health.
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Affiliation(s)
- Jin Chai
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (J.C.); (N.W.); (J.B.); (J.Z.); (G.Z.); (J.A.); (T.Z.); (X.T.); (Y.W.)
- Key Laboratory of Livestock and Poultry Multi-Omics, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Ning Wang
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (J.C.); (N.W.); (J.B.); (J.Z.); (G.Z.); (J.A.); (T.Z.); (X.T.); (Y.W.)
- Key Laboratory of Livestock and Poultry Multi-Omics, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Li Chen
- Chongqing Academy of Animal Science, Chongqing 402460, China;
- National Center of Technology Innovation for Pigs, Chongqing 402460, China
- Key Laboratory of Animal Resource Evaluation and Utilization (Pigs), Ministry of Agriculture and Rural Affairs, Chongqing 402160, China
| | - Jingyi Bai
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (J.C.); (N.W.); (J.B.); (J.Z.); (G.Z.); (J.A.); (T.Z.); (X.T.); (Y.W.)
- Key Laboratory of Livestock and Poultry Multi-Omics, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Jiaman Zhang
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (J.C.); (N.W.); (J.B.); (J.Z.); (G.Z.); (J.A.); (T.Z.); (X.T.); (Y.W.)
- Key Laboratory of Livestock and Poultry Multi-Omics, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Geng Zhang
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (J.C.); (N.W.); (J.B.); (J.Z.); (G.Z.); (J.A.); (T.Z.); (X.T.); (Y.W.)
- Key Laboratory of Livestock and Poultry Multi-Omics, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Jiahua An
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (J.C.); (N.W.); (J.B.); (J.Z.); (G.Z.); (J.A.); (T.Z.); (X.T.); (Y.W.)
- Key Laboratory of Livestock and Poultry Multi-Omics, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Tingting Zhang
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (J.C.); (N.W.); (J.B.); (J.Z.); (G.Z.); (J.A.); (T.Z.); (X.T.); (Y.W.)
- Key Laboratory of Livestock and Poultry Multi-Omics, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Xingyan Tong
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (J.C.); (N.W.); (J.B.); (J.Z.); (G.Z.); (J.A.); (T.Z.); (X.T.); (Y.W.)
- Key Laboratory of Livestock and Poultry Multi-Omics, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Yifan Wu
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (J.C.); (N.W.); (J.B.); (J.Z.); (G.Z.); (J.A.); (T.Z.); (X.T.); (Y.W.)
- Key Laboratory of Livestock and Poultry Multi-Omics, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Mingzhou Li
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (J.C.); (N.W.); (J.B.); (J.Z.); (G.Z.); (J.A.); (T.Z.); (X.T.); (Y.W.)
- Key Laboratory of Livestock and Poultry Multi-Omics, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Long Jin
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (J.C.); (N.W.); (J.B.); (J.Z.); (G.Z.); (J.A.); (T.Z.); (X.T.); (Y.W.)
- Key Laboratory of Livestock and Poultry Multi-Omics, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
- Key Laboratory of Agricultural Bioinformatics, Ministry of Education, Sichuan Agricultural University, Chengdu 611130, China
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Qian W, Xu Y, Wen W, Huang L, Guo Z, Zhu W, Li Y. Exosomal miR-103a-3p from Crohn's Creeping Fat-Derived Adipose-Derived Stem Cells Contributes to Intestinal Fibrosis by Targeting TGFBR3 and Activating Fibroblasts. J Crohns Colitis 2023; 17:1291-1308. [PMID: 36897738 DOI: 10.1093/ecco-jcc/jjad042] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Indexed: 03/11/2023]
Abstract
BACKGROUND AND AIMS Mesenteric adipose tissue hypertrophy is a hallmark of Crohn's disease [CD], and creeping fat [CF] is unique to CD. Adipose-derived stem cells [ASCs] from inflammatory tissue exhibited altered biological functions. The role of ASCs isolated from CF in intestinal fibrosis and the potential mechanism remain unclear. METHODS ASCs were isolated from CF [CF-ASCs] and disease-unaffected mesenteric adipose tissue [Ctrl-ASCs] of patients with CD. A series of in vitro and in vivo experiments were conducted to study the effects of exosomes from CF-ASCs [CF-Exos] on intestinal fibrosis and fibroblast activation. A micro-RNA microarray analysis was performed. Western blot, luciferase assay and immunofluorescence were performed to further detect the underlying mechanisms. RESULTS The results indicated that CF-Exos promoted intestinal fibrosis by activating fibroblasts in a dose-dependent manner. They continuously promoted progression of intestinal fibrosis even after dextran sulphate sodium withdrawal. Further analysis showed that exosomal miR-103a-3p was enriched in CF-Exos and participated in exosome-mediated fibroblast activation. TGFBR3 was identified as a target gene of miR-103a-3p. Mechanistically, CF-ASCs released exosomal miR-103a-3p and promoted fibroblast activation by targeting TGFBR3 and promoting Smad2/3 phosphorylation. We also found that the expression of miR-103a-3p in diseased intestine was positively associated with the degree of CF and fibrosis score. CONCLUSION Our findings show that exosomal miR-103a-3p from CF-ASCs promotes intestinal fibrosis by activating fibroblasts via TGFBR3 targeting, suggesting that CF-ASCs are potential therapeutic targets for intestinal fibrosis in CD.
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Affiliation(s)
- Wenwei Qian
- Department of General Surgery, Jinling Hospital, Medical School of Southeast University, No. 305 East Zhongshan Road, Nanjing, PR China
| | - Yihan Xu
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, No. 305 East Zhongshan Road, Nanjing, PR China
| | - Weiwei Wen
- Department of General Surgery, Jinling Hospital, Medical School of Southeast University, No. 305 East Zhongshan Road, Nanjing, PR China
| | - Liangyu Huang
- Department of Colorectal Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, PR China
| | - Zhen Guo
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, No. 305 East Zhongshan Road, Nanjing, PR China
| | - Weiming Zhu
- Department of General Surgery, Jinling Hospital, Medical School of Southeast University, No. 305 East Zhongshan Road, Nanjing, PR China
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, No. 305 East Zhongshan Road, Nanjing, PR China
| | - Yi Li
- Department of General Surgery, Jinling Hospital, Medical School of Southeast University, No. 305 East Zhongshan Road, Nanjing, PR China
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, No. 305 East Zhongshan Road, Nanjing, PR China
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Zuo L, Geng Z, Song X, Li J, Wang Y, Zhang X, Ge S, Wang L, Liu G, Zhang L, Xu M, Zhao Y, Shen L, Ge Y, Wu R, Hu J. Browning of Mesenteric White Adipose Tissue in Crohn's Disease: A New Pathological Change and Therapeutic Target. J Crohns Colitis 2023; 17:1179-1192. [PMID: 36932969 DOI: 10.1093/ecco-jcc/jjad046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Indexed: 03/19/2023]
Abstract
BACKROUND Hypertrophic mesenteric adipose tissue [htMAT] is a distinctive hallmark of Crohn's disease [CD], and it affects enteritis via inflammatory adipokine secretion by dysfunctional white adipocytes. White adipocytes can become beige adipocytes, which are characterized by active lipid consumption and favourable endocrine function, via white adipocyte browning. Our study aimed to determine whether white adipocyte browning occurs in htMAT and its role in CD. METHODS White adipocyte browning was examined in MAT samples from CD patients and controls. Human MAT explants and primary mesenteric adipocytes were cultured for in vitro experiments. Mice with 2,4,6-trinitrobenzenesulphonic acid solution [TNBS]-induced colitis were used for in vivo studies. A β3-adrenergic receptor agonist [CL316,243] was used to induce white adipocyte browning, and IL-4/STAT6 signalling was analysed to explore the mechanism underlying the anti-inflammatory activity of beige adipocytes. RESULTS White adipocyte browning was observed in htMAT from CD patients, as shown by the appearance of uncoupling protein 1 [UCP1]-positive multilocular [beige] adipocytes with lipid-depleting activity and anti-inflammatory endocrine profiles. Both human MAT and primary mesenteric adipocytes from CD patients and controls could be induced to undergo browning, which increased their lipid-depleting and anti-inflammatory activities in vitro. Inducing MAT browning ameliorated mesenteric hypertrophy and inflammation as well as colitis in TNBS-treated mice in vivo. The anti-inflammatory activity of beige adipocytes was at least partially related to STAT6 signalling activation via the autocrine and paracrine effects of IL-4. CONCLUSION White adipocyte browning is a newly identified pathological change in htMAT of CD patients and a possible therapeutic target.
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Affiliation(s)
- Lugen Zuo
- Department of Gastrointestinal Surgery, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China
| | - Zhijun Geng
- Department of Central Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Xue Song
- Department of Central Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Jing Li
- Department of Clinical Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Yueyue Wang
- Department of Clinical Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Xiaofeng Zhang
- Department of Central Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Sitang Ge
- Department of Gastrointestinal Surgery, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China
| | - Lian Wang
- Department of Central Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Guangyong Liu
- Anhui Key Laboratory of Tissue Transplantation, Bengbu Medical College, Bengbu, China
| | - Lele Zhang
- Anhui Key Laboratory of Tissue Transplantation, Bengbu Medical College, Bengbu, China
| | - Mengyu Xu
- Anhui Key Laboratory of Tissue Transplantation, Bengbu Medical College, Bengbu, China
| | - Yajing Zhao
- Anhui Key Laboratory of Tissue Transplantation, Bengbu Medical College, Bengbu, China
| | - Li Shen
- Anhui Key Laboratory of Tissue Transplantation, Bengbu Medical College, Bengbu, China
| | - Yuanyuan Ge
- Department of Colorectal Surgery, The Third Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Rong Wu
- Department of General Surgery, Southeast University Zhongda Hospital, Nanjing, China
| | - Jianguo Hu
- Department of Central Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
- Department of Clinical Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
- Anhui Key Laboratory of Tissue Transplantation, Bengbu Medical College, Bengbu, China
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10
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Chen X, Zhang H, Zhou X, Wang Y, Shi W. Autotaxin promotes the degradation of the mucus layer by inhibiting autophagy in mouse colitis. Mol Immunol 2023; 160:44-54. [PMID: 37356325 DOI: 10.1016/j.molimm.2023.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 05/06/2023] [Accepted: 06/06/2023] [Indexed: 06/27/2023]
Abstract
Autotaxin (ATX or ENPP2) is an autocrine enzyme associated with the metabolism of various phospholipids. ATX has recently been identified as a regulatory factor in immune-related and inflammation-associated diseases, such as inflammatory bowel disease, but the exact mechanism is unclear. Here, we treated mice with recombinant ATX protein or an ATX inhibitor to investigate the effect of ATX on colitis in mice and the underlying mechanism. In a mouse model of colitis, ATX expression was increased, autophagy was impaired, and the mucus barrier was disrupted. Recombinant ATX protein promoted intestinal inflammation, inhibited autophagy, and disrupted the mucus barrier, while an ATX inhibitor had the opposite effect. Next, we treated mice that received ATX with an autophagy activator and an adenosine 5'-monophosphate-activated protein kinase (AMPK) agonist. We observed that autophagy activator and AMPK agonist could repair the mucus barrier and alleviate intestinal inflammation in ATX-treated mice. In vitro, we obtained consistent results. Thus, we concluded that ATX could inhibit autophagy through the AMPK pathway, which consequently disordered the mucus barrier and aggravated intestinal inflammation.
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Affiliation(s)
- Xiaoyan Chen
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China; The State Key Laboratory of Digestive Disease, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Hui Zhang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xiaojiang Zhou
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yunwu Wang
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Wenjie Shi
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China.
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11
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Richard N, Savoye G, Leboutte M, Amamou A, Ghosh S, Marion-Letellier R. Crohn’s disease: Why the ileum? World J Gastroenterol 2023; 29:3222-3240. [PMID: 37377591 PMCID: PMC10292140 DOI: 10.3748/wjg.v29.i21.3222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/23/2023] [Accepted: 05/08/2023] [Indexed: 06/01/2023] Open
Abstract
Crohn’s disease (CD) is an inflammatory bowel disease characterized by immune-mediated flares affecting any region of the intestine alternating with remission periods. In CD, the ileum is frequently affected and about one third of patients presents with a pure ileal type. Moreover, the ileal type of CD presents epidemiological specificities like a younger age at onset and often a strong link with smoking and genetic susceptibility genes. Most of these genes are associated with Paneth cell dysfunction, a cell type found in the intestinal crypts of the ileum. Besides, a Western-type diet is associated in epidemiological studies with CD onset and increasing evidence shows that diet can modulate the composition of bile acids and gut microbiota, which in turn modulates the susceptibility of the ileum to inflammation. Thus, the interplay between environmental factors and the histological and anatomical features of the ileum is thought to explain the specific transcriptome profile observed in CD ileitis. Indeed, both immune response and cellular healing processes harbour differences between ileal and non-ileal CD. Taken together, these findings advocate for a dedicated therapeutic approach to managing ileal CD. Currently, interventional pharmacological studies have failed to clearly demonstrate distinct response profiles according to disease site. However, the high rate of stricturing disease in ileal CD requires the identification of new therapeutic targets to significantly change the natural history of this debilitating disease.
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Affiliation(s)
- Nicolas Richard
- University of Rouen Normandie, INSERM, ADEN UMR 1073, Nutrition, Inflammation and Microbiota-Gut-Brain Axis, Rouen F-76000, France
- CHU Rouen, Department of Gastroenterology, Rouen University Hospital-Charles Nicolle, Rouen F-76000, France
- Institute for Research and Innovation in Biomedicine, University of Rouen Normandie, Rouen F-76000, France
| | - Guillaume Savoye
- University of Rouen Normandie, INSERM, ADEN UMR 1073, Nutrition, Inflammation and Microbiota-Gut-Brain Axis, Rouen F-76000, France
- CHU Rouen, Department of Gastroenterology, Rouen University Hospital-Charles Nicolle, Rouen F-76000, France
- Institute for Research and Innovation in Biomedicine, University of Rouen Normandie, Rouen F-76000, France
| | - Mathilde Leboutte
- University of Rouen Normandie, INSERM, ADEN UMR 1073, Nutrition, Inflammation and Microbiota-Gut-Brain Axis, Rouen F-76000, France
- Institute for Research and Innovation in Biomedicine, University of Rouen Normandie, Rouen F-76000, France
| | - Asma Amamou
- APC Microbiome Ireland, Biosciences Building, University College Cork, Cork T12 YT20, Ireland
| | - Subrata Ghosh
- APC Microbiome Ireland, Biosciences Building, University College Cork, Cork T12 YT20, Ireland
| | - Rachel Marion-Letellier
- University of Rouen Normandie, INSERM, ADEN UMR 1073, Nutrition, Inflammation and Microbiota-Gut-Brain Axis, Rouen F-76000, France
- Institute for Research and Innovation in Biomedicine, University of Rouen Normandie, Rouen F-76000, France
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12
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Subedi U, Manikandan S, Bhattarai S, Sharma P, Sharma S, Sun H, Miriyala S, Panchatcharam M. The Autotaxin-LPA Axis Emerges as a Novel Regulator of Smooth Muscle Cell Phenotypic Modulation during Intimal Hyperplasia. Int J Mol Sci 2023; 24:2913. [PMID: 36769255 PMCID: PMC9917461 DOI: 10.3390/ijms24032913] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 01/24/2023] [Accepted: 01/31/2023] [Indexed: 02/05/2023] Open
Abstract
Neointimal hyperplasia is characterized by a loss of the contractile phenotype of vascular smooth muscle cells (VSMCs). Our group has recently shown that VSMC proliferation and migration are mediated by lysophosphatidic acid (LPA) during restenosis, but the role of autotaxin (ATX; lysophospholipase D), which produces LPA, remains unclear. Endothelial denudation of the mouse carotid artery was performed to induce neointimal hyperplasia, and the extent of damage caused by the ATX-LPA axis was assessed in VSMCs. We observed the upregulation of ATX activity (p < 0.0002) in the injured carotid artery using an AR2 probe fluorescence assay. Further, the tissue carotid LPA levels were elevated 2.7-fold in carotid vessels, augmenting neointimal hyperplasia. We used an electrical cell-substrate impedance sensor (ECIS) to measure VSMC proliferation and migration. Treatment with an ATX inhibitor (PF8380) or LPA receptor inhibitor (Ki16425) attenuated VSMC proliferation (extracellular signal-regulated kinases) activity and migration in response to recombinant ATX. Indeed, PF8380 treatment rescued the aggravated post-wire injury neointima formation of carotid arteries. The upregulation of ATX following vessel injury leads to LPA production in VSMCs, favoring restenosis. Our observations suggest that inhibition of the ATX-LPA axis could be therapeutically targeted in restenosis to minimize VSMC phenotypic modulation and inflammation after vascular injury.
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Affiliation(s)
| | | | | | | | | | | | - Sumitra Miriyala
- Department of Cellular Biology and Anatomy, Louisiana State University Health Sciences-Shreveport, Shreveport, LA 71130, USA
| | - Manikandan Panchatcharam
- Department of Cellular Biology and Anatomy, Louisiana State University Health Sciences-Shreveport, Shreveport, LA 71130, USA
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13
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A Diagnostic Impact of Serum Autotaxin Levels in Patients with Bone Marrow Fibrosis. CLINICAL LYMPHOMA, MYELOMA & LEUKEMIA 2023; 23:e117-e124. [PMID: 36567212 DOI: 10.1016/j.clml.2022.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 12/04/2022] [Indexed: 12/13/2022]
Abstract
BACKGROUND Bone marrow (BM) fibrosis is a condition characterized by deposition of reticulin and collagen fibers in BM. It may confer a poor prognosis in some of hematological malignancies. However, the relationship between fibrosis and the disease pathology is not fully understood and no biomarkers for BM fibrosis are available in clinical practice. Autotaxin (ATX) is a secreted enzyme that is associated with various pathophysiological responses, including fibrosis. We conducted a pilot study to investigate the serum ATX levels in various hematological disorders in patients with or without BM fibrosis. PATIENTS AND METHODS The serum levels of ATX in a total of 198 patients with hematological disorders and 160 healthy subjects were analyzed. Because of sexual difference in ATX level, the ATX ratio-determined by dividing the ATX level by the mean value of ATX of control subjects of the same sex-was calculated for further comparative analysis. A trephine biopsy samples from 53 patients were also evaluated to determine the Reticulin Fibrosis Index and Collagen Fibrosis Index of each sample. RESULTS In comparison to the control group, the ATX ratio was significantly higher in patients, especially those with malignant lymphoma. The ATX ratio in lymphoma patients with BM fibrosis was significantly higher than that in patients without BM fibrosis. The Collagen Fibrosis Index showed statistically significant negative correlation with the ATX ratio. CONCLUSION Our results suggest that the ATX ratio may be a candidate diagnostic biomarker for BM fibrosis in selected patients, including those with malignant lymphoma.
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14
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Zuo L, Li J, Zhang X, Geng Z, Song X, Wang Y, Ge S, Shi R, Zhou Y, Ge Y, Wu R, Hu J. Aberrant Mesenteric Adipose Extracellular Matrix Remodelling is Involved in Adipocyte Dysfunction in Crohn's Disease: The Role of TLR-4-mediated Macrophages. J Crohns Colitis 2022; 16:1762-1776. [PMID: 35708752 DOI: 10.1093/ecco-jcc/jjac087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND AIMS Hypertrophic mesenteric adipose tissue [htMAT] is involved in the disease progression of Crohn's disease [CD] through expressing proinflammatory adipokines from dysfunctional adipocytes by unknown mechanism. Adipocyte function is affected by dynamic adipose tissue extracellular matrix [ECM] remodelling that is mainly mediated by macrophages, and our study aimed to reveal whether aberrant ECM remodelling was present in CD-htMAT and its effects on adipocyte dysfunction, as well as the mechanism. METHODS ECM remodelling was examined in MAT samples from CD patients and controls. Mice with dinitrobenzene sulphonic acid [DNBS]-induced colitis were used in vivo study, and lipopolysaccharide [LPS]-induced remodelling behaviour in macrophages was examined in vitro. Macrophages or TLR4 inhibition were used to analyse ECM remodelling mechanisms and their effects on adipocyte function. RESULTS Aberrant ECM remodelling: was observed in CD-htMAT, which was characterised by a widened and deformed ECM structure accompanied by dysregulated matrix synthesis and degradation; served as a reservoir for inflammatory factors/cells dominated by macrophages; and was involved in adipocyte dysfunction. In addition, macrophages were the main source of ECM remodelling regulatory factors with activation of Toll-like receptor 4 [TLR4] in htMAT. In vivo, macrophage depletion or TLR4 inhibition largely attenuated mesenteric ECM remodelling while improving mesenteric adipocyte dysfunction during chronic enteritis. In vitro, antagonizing TLR4 significantly inhibited LPS-induced macrophage ECM remodelling behavior. CONCLUSIONS The aberrant ECM remodelling in CD-htMAT contributed to mesenteric adipocyte dysfunction, which may be caused at least partly by TLR4-mediated macrophage remodelling behavior. Inhibiting ECM remodelling may be a potential therapeutic strategy for CD.
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Affiliation(s)
- Lugen Zuo
- Department of Gastrointestinal Surgery, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China
| | - Jing Li
- Department of Clinical Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Xiaofeng Zhang
- Department of Central Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Zhijun Geng
- Department of Central Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Xue Song
- Department of Central Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Yueyue Wang
- Department of Clinical Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Sitang Ge
- Department of Gastrointestinal Surgery, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China
| | - Ruohan Shi
- Anhui Key Laboratory of Tissue Transplantation, Bengbu Medical College, Bengbu, China
| | - Yueqing Zhou
- Anhui Key Laboratory of Tissue Transplantation, Bengbu Medical College, Bengbu, China
| | - Yuanyuan Ge
- Department of Colorectal Surgery, Third Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Rong Wu
- Department of General Surgery, Southeast University Zhongda Hospital, Nanjing, China
| | - Jianguo Hu
- Department of Clinical Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China.,Anhui Key Laboratory of Tissue Transplantation, Bengbu Medical College, Bengbu, China
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15
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Li J, Zuo L, Geng Z, Li Q, Cheng Y, Yang Z, Shi R, Zhou Y, Nie W, Wang Y, Zhang X, Ge S, Song X, Hu J. Pygopus2 ameliorates mesenteric adipocyte poor differentiation to alleviate Crohn's disease -like colitis via the Axin2/GSK3β pathway. Cell Prolif 2022; 55:e13292. [PMID: 35707871 PMCID: PMC9528773 DOI: 10.1111/cpr.13292] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 05/29/2022] [Accepted: 05/31/2022] [Indexed: 12/21/2022] Open
Abstract
Objectives Crohn's disease (CD) mesenteric adipose tissue (MAT) inflammation affects enteritis through the interaction between the mesentery and intestine, and we previously found that poorly differentiated mesenteric adipocytes were related to its inflammatory features. Pygopus2 (Pygo2) is a key negative regulator of adipocyte differentiation. We aimed to determine whether Pygo2 participates in CD mesenteric lesions and whether Pygo2 knockdown would be beneficial in a CD model (Il‐10−/− mice). Methods Pygo2 expression in MAT from control and CD patients and Il‐10−/− mice was measured by immunohistochemistry. Lentiviral transfection was used to regulate Pygo2 expression in Il‐10−/− mice, and the effects on mesenteric adipocyte differentiation, inflammation, and dysfunction during spontaneous colitis, as well as the possible mechanism, were investigated. Results Pygo2 expression was increased in MAT from CD patients and Il‐10−/− mice, and its expression correlated with poor adipocyte differentiation and inflammation. Pygo2 knockdown significantly ameliorated colitis in Il‐10−/− mice. Moreover, the downregulation of Pygo2 gene expression could promote adipocyte differentiation and inhibit adipocyte inflammation in vivo and in vitro, and the effects were at least partly mediated by the Axis inhibition protein 2 (Axin2)/glycogen synthase kinase 3 beta (GSK3β) pathway. Conclusions The increase in Pygo2 may be related to mesenteric adipocyte poor differentiation and inflammatory features of CD, and Pygo2 inhibition could alleviate CD‐like colitis by improving mesenteric lesions by regulating the Axin2/GSK3β pathway.
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Affiliation(s)
- Jing Li
- Department of Clinical Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Lugen Zuo
- Department of Gastrointestinal Surgery, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Zhijun Geng
- Department of Central Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Qingqing Li
- Department of Clinical Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Yang Cheng
- Department of Clinical Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Zi Yang
- Department of Gastrointestinal Surgery, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Ruohan Shi
- Department of Clinical Medicine, Bengbu Medical College, Bengbu, China
| | - Yueqing Zhou
- Department of Clinical Medicine, Bengbu Medical College, Bengbu, China
| | - Wenhu Nie
- Department of Clinical Medicine, Bengbu Medical College, Bengbu, China
| | - Yueyue Wang
- Department of Clinical Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Xiaofeng Zhang
- Department of Central Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Sitang Ge
- Department of Gastrointestinal Surgery, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Xue Song
- Department of Central Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Jianguo Hu
- Department of Clinical Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
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