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Qiu J, Wu J, Chen W, Ruan Y, Mao J, Li S, Tang X, Zhao L, Li S, Li K, Liu D, Duan Y. NOD1 deficiency ameliorates the progression of diabetic retinopathy by modulating bone marrow-retina crosstalk. Stem Cell Res Ther 2024; 15:38. [PMID: 38336763 PMCID: PMC10858517 DOI: 10.1186/s13287-024-03654-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 01/29/2024] [Indexed: 02/12/2024] Open
Abstract
BACKGROUND Nucleotide-binding oligomerization domain-containing protein 1 (NOD1) plays a pivotal role in inducing metabolic inflammation in diabetes. Additionally, the NOD1 ligand disrupts the equilibrium of bone marrow-derived hematopoietic stem/progenitor cells, a process that has immense significance in the development of diabetic retinopathy (DR). We hypothesized that NOD1 depletion impedes the advancement of DR by resolving bone marrow dysfunction. METHODS We generated NOD1-/--Akita double-mutant mice and chimeric mice with hematopoietic-specific NOD1 depletion to study the role of NOD1 in the bone marrow-retina axis. RESULTS Elevated circulating NOD1 activators were observed in Akita mice after 6 months of diabetes. NOD1 depletion partially restored diabetes-induced structural changes and retinal electrical responses in NOD1-/--Akita mice. Loss of NOD1 significantly ameliorated the progression of diabetic retinal vascular degeneration, as determined by acellular capillary quantification. The preventive effect of NOD1 depletion on DR is linked to bone marrow phenotype alterations, including a restored HSC pool and a shift in hematopoiesis toward myelopoiesis. We also generated chimeric mice with hematopoietic-specific NOD1 ablation, and the results further indicated that NOD1 had a protective effect against DR. Mechanistically, loss of hematopoietic NOD1 resulted in reduced bone marrow-derived macrophage infiltration and decreased CXCL1 and CXCL2 secretion within the retina, subsequently leading to diminished neutrophil chemoattraction and NETosis. CONCLUSIONS The results of our study unveil, for the first time, the critical role of NOD1 as a trigger for a hematopoietic imbalance toward myelopoiesis and local retinal inflammation, culminating in DR progression. Targeting NOD1 in bone marrow may be a potential strategy for the prevention and treatment of DR.
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Affiliation(s)
- Jingwen Qiu
- Department of Endocrinology and Metabolism, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jing Wu
- Department of Hematology/Oncology, Chongqing University Cancer Hospital, Chongqing, China
| | - Wenwen Chen
- Department of Endocrinology and Metabolism, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yu Ruan
- Division of Growth, Development and Mental Health of Children and Adolescence, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Jingning Mao
- Health Medical Center, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Shue Li
- Department of Laboratory Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xuan Tang
- Department of Endocrinology and Metabolism, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Lei Zhao
- Center for Lipid Research, Key Laboratory of Molecular Biology for Infectious Diseases, Ministry of Education, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Shengbing Li
- Department of Endocrinology and Metabolism, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Ke Li
- Department of Endocrinology and Metabolism, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Dongfang Liu
- Department of Endocrinology and Metabolism, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yaqian Duan
- Department of Endocrinology and Metabolism, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.
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Kang H, Park Y, Lee A, Seo H, Kim MJ, Choi J, Jo HN, Jeong HN, Cho JG, Chang W, Lee MS, Jeon R, Kim J. Negative regulation of NOD1 mediated angiogenesis by PPARγ-regulated miR-125a. Biochem Biophys Res Commun 2016; 482:28-34. [PMID: 27836539 DOI: 10.1016/j.bbrc.2016.11.032] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 11/07/2016] [Indexed: 01/20/2023]
Abstract
Infection with pathogens activates the endothelial cell and its sustained activation may result in impaired endothelial function. Endothelial dysfunction contributes to the pathologic angiogenesis that is characteristic of infection-induced inflammatory pathway activation. Nucleotide-binding oligomerization domain-containing protein 1 (NOD1) is a protein receptor which recognizes bacterial molecules and stimulates an immune reaction in various cells; however, the underlying molecular mechanisms in the regulation of inflammation-triggered angiogenesis are not fully understood. Here we report that peroxisome proliferator-activated receptor gamma (PPARγ)-mediated miR-125a serves as an important regulator of NOD1 agonist-mediated angiogenesis in endothelial cells by directly targeting NOD1. Treatment of human umbilical vein endothelial cells with natural PPARγ ligand, 15-Deoxy-Delta12,14-prostaglandin J2, led to inhibition of NOD1 expression; contrarily, protein levels of NOD1 were significantly increased by PPARγ knockdown. We report that PPARγ regulation of NOD1 expression is a novel microRNA-mediated regulation in endothelial cells. MiR-125a expression was markedly decreased in human umbilical vein endothelial cells subjected to PPARγ knockdown while 15-Deoxy-Delta12,14-prostaglandin J2 treatment increased the level of miR-125a. In addition, NOD1 is closely regulated by miR-125a, which directly targets the 3' untranslated region of NOD1. Moreover, both overexpression of miR-125a and PPARγ activation led to inhibition of NOD1 agonist-induced tube formation in endothelial cells. Finally, NOD1 agonist increased the formation of cranial and subintestinal vessel plexus in zebrafish, and this effect was abrogated by concurrent PPARγ activation. Overall, these findings identify a PPARγ-miR-125a-NOD1 signaling axis in endothelial cells that is critical in the regulation of inflammation-mediated angiogenesis.
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Affiliation(s)
- Hyesoo Kang
- Department of Life Systems, Sookmyung Women's University, Seoul, 04310, South Korea
| | - Youngsook Park
- Department of Life Systems, Sookmyung Women's University, Seoul, 04310, South Korea
| | - Aram Lee
- Department of Life Systems, Sookmyung Women's University, Seoul, 04310, South Korea
| | - Hyemin Seo
- Department of Life Systems, Sookmyung Women's University, Seoul, 04310, South Korea
| | - Min Jung Kim
- Department of Life Systems, Sookmyung Women's University, Seoul, 04310, South Korea
| | - Jihea Choi
- Department of Life Systems, Sookmyung Women's University, Seoul, 04310, South Korea
| | - Ha-Neul Jo
- Department of Life Systems, Sookmyung Women's University, Seoul, 04310, South Korea
| | - Ha-Neul Jeong
- Department of Life Systems, Sookmyung Women's University, Seoul, 04310, South Korea
| | - Jin Gu Cho
- Department of Life Systems, Sookmyung Women's University, Seoul, 04310, South Korea
| | - Woochul Chang
- Department of Biology Education, College of Education, Pusan National University, Busan, 46241, South Korea
| | - Myeong-Sok Lee
- Department of Life Systems, Sookmyung Women's University, Seoul, 04310, South Korea
| | - Raok Jeon
- Research Center for Cell Fate Control, College of Pharmacy, Sookmyung Women's University, Seoul, 04310, South Korea
| | - Jongmin Kim
- Department of Life Systems, Sookmyung Women's University, Seoul, 04310, South Korea.
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Jang JH, Kim H, Kim YJ, Cho JH. Molecular cloning and functional analysis of nucleotide-binding oligomerization domain-containing protein 1 in rainbow trout, Oncorhynchus mykiss. Fish Shellfish Immunol 2016; 51:53-63. [PMID: 26876355 DOI: 10.1016/j.fsi.2016.02.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Revised: 02/04/2016] [Accepted: 02/05/2016] [Indexed: 06/05/2023]
Abstract
NOD1 has important roles in innate immunity as sensor of microbial components derived from bacterial peptidoglycan. In this study, we identified genes encoding components of the NOD1 signaling pathway, including NOD1 (OmNOD1) and RIP2 (OmRIP2) from rainbow trout, Oncorhynchus mykiss, and investigated whether OmNOD1 has immunomodulating activity in a rainbow trout hepatoma cell line RTH-149 treated with NOD1-specific ligand (iE-DAP). The deduced amino acid sequence of OmNOD1 contained conserved CARD, NOD and LRR domains. Loss-of-function and gain-of-function experiments indicated that OmNOD1 is involved in the expression of pro-inflammatory cytokines. Silencing of OmNOD1 in RTH-149 cells treated with iE-DAP decreased the expression of IL-1β, IL-6, IL-8 and TNF-α. Conversely, overexpression of OmNOD1 resulted in up-regulation of IL-1β, IL-6, IL-8 and TNF-α expression. In addition, RIP2 inhibitor (gefitinib) significantly decreased the expression of these pro-inflammatory cytokines induced by iE-DAP in RTH-149 cells. These findings highlight the important role of NOD1 signaling pathway in fish in eliciting innate immune response.
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Affiliation(s)
- Ju Hye Jang
- Research Institute of Life Science, Gyeongsang National University, Jinju 52828, South Korea
| | - Hyun Kim
- Division of Life Science, Gyeongsang National University, Jinju 52828, South Korea
| | - Yu Jin Kim
- Division of Life Science, Gyeongsang National University, Jinju 52828, South Korea
| | - Ju Hyun Cho
- Research Institute of Life Science, Gyeongsang National University, Jinju 52828, South Korea; Division of Life Science, Gyeongsang National University, Jinju 52828, South Korea.
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