1
|
Stone ML, Lee J, Lee JW, Coho H, Tariveranmoshabad M, Wattenberg MM, Choi H, Herrera VM, Xue Y, Choi-Bose S, Zingone SK, Patel D, Markowitz K, Delman D, Balachandran VP, Beatty GL. Hepatocytes coordinate immune evasion in cancer via release of serum amyloid A proteins. Nat Immunol 2024; 25:755-763. [PMID: 38641718 DOI: 10.1038/s41590-024-01820-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 03/15/2024] [Indexed: 04/21/2024]
Abstract
T cell infiltration into tumors is a favorable prognostic feature, but most solid tumors lack productive T cell responses. Mechanisms that coordinate T cell exclusion are incompletely understood. Here we identify hepatocyte activation via interleukin-6/STAT3 and secretion of serum amyloid A (SAA) proteins 1 and 2 as important regulators of T cell surveillance of extrahepatic tumors. Loss of STAT3 in hepatocytes or SAA remodeled the tumor microenvironment with infiltration by CD8+ T cells, while interleukin-6 overexpression in hepatocytes and SAA signaling via Toll-like receptor 2 reduced the number of intratumoral dendritic cells and, in doing so, inhibited T cell tumor infiltration. Genetic ablation of SAA enhanced survival after tumor resection in a T cell-dependent manner. Likewise, in individuals with pancreatic ductal adenocarcinoma, long-term survivors after surgery demonstrated lower serum SAA levels than short-term survivors. Taken together, these data define a fundamental link between liver and tumor immunobiology wherein hepatocytes govern productive T cell surveillance in cancer.
Collapse
Affiliation(s)
- Meredith L Stone
- Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA, USA
- Division of Hematology-Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Jesse Lee
- Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA, USA
- Division of Hematology-Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Jae W Lee
- Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA, USA
- Division of Hematology-Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Heather Coho
- Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA, USA
- Division of Hematology-Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Mito Tariveranmoshabad
- Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA, USA
- Division of Hematology-Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Max M Wattenberg
- Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA, USA
- Division of Hematology-Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Hana Choi
- Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA, USA
- Division of Hematology-Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Veronica M Herrera
- Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA, USA
- Division of Hematology-Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Yuqing Xue
- Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA, USA
- Division of Hematology-Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Shaanti Choi-Bose
- Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA, USA
- Division of Hematology-Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Sofia K Zingone
- Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA, USA
- Division of Hematology-Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Dhruv Patel
- Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA, USA
- Division of Hematology-Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Kelly Markowitz
- Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA, USA
- Division of Hematology-Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Devora Delman
- Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA, USA
- Division of Hematology-Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Vinod P Balachandran
- Human Oncology and Pathogenesis Program, Hepatopancreatobiliary Service, Department of Surgery, David M. Rubenstein Center for Pancreatic Cancer Research, Parker Institute for Cancer Immunotherapy, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Gregory L Beatty
- Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA, USA.
- Division of Hematology-Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
| |
Collapse
|
2
|
Wei H, Li Y, Zhang J, Xu C, Wei D, Quan C, Zhu S. MMPs-related risk model identification and SAA1 promotes clear cell renal cell carcinoma migration via ERK-AP1-MMPs axis. Sci Rep 2024; 14:9411. [PMID: 38658579 PMCID: PMC11043417 DOI: 10.1038/s41598-024-59112-5] [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: 09/13/2023] [Accepted: 04/08/2024] [Indexed: 04/26/2024] Open
Abstract
Matrix Metalloproteinases (MMPs) have been demonstrated to be essential in facilitating the migration and metastasis of clear cell renal cell carcinoma (ccRCC). However, the ability of the MMP family to predict clinical outcomes and guide optimal therapeutic strategies for ccRCC patients remains incompletely understood. In this investigation, we initially conducted a thorough examination of the MMP family in pan-cancer. Notably, MMPs exhibited distinctive significance in ccRCC. Following this, we undertook an extensive analysis to evaluate the clinical value of MMPs and potential mechanisms by which MMPs contribute to the progression of ccRCC. A novel stratification method and prognostic model were developed based on MMPs in order to enhance the accuracy of prognosis prediction for ccRCC patients and facilitate personalized treatment. By conducting multi-omics analysis and transcriptional regulation analysis, it was hypothesized that SAA1 plays a crucial role in promoting ccRCC migration through MMPs. Subsequently, in vitro experiments confirmed that SAA1 regulates ccRCC cell migration via the ERK-AP1-MMPs axis. In conclusion, our study has explored the potential value of the MMP family as prognostic markers for ccRCC and as guides for medication regimens. Additionally, we have identified SAA1 as a crucial factor in the migration of ccRCC.
Collapse
Affiliation(s)
- Haotian Wei
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Yajun Li
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Jian Zhang
- Department of Orthopedics, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Chenglong Xu
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Dadong Wei
- Department of Urology, Affiliated Hospital of Chifeng University, Chifeng, China.
| | - Changyi Quan
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China.
| | - Shimiao Zhu
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China.
| |
Collapse
|
3
|
Shridas P, Ji A, Trumbauer AC, Noffsinger VP, Meredith LW, de Beer FC, Mullick AE, Webb NR, Karounos DG, Tannock LR. Antisense oligonucleotide targeting hepatic Serum Amyloid A limits the progression of angiotensin II-induced abdominal aortic aneurysm formation. Atherosclerosis 2024; 391:117492. [PMID: 38461759 PMCID: PMC11006562 DOI: 10.1016/j.atherosclerosis.2024.117492] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 02/07/2024] [Accepted: 02/23/2024] [Indexed: 03/12/2024]
Abstract
BACKGROUND AND AIMS Obesity increases the risk for abdominal aortic aneurysms (AAA) in humans and enhances angiotensin II (AngII)-induced AAA formation in C57BL/6 mice. We reported that deficiency of Serum Amyloid A (SAA) significantly reduces AngII-induced inflammation and AAA in both hyperlipidemic apoE-deficient and obese C57BL/6 mice. The aim of this study is to investigate whether SAA plays a role in the progression of early AAA in obese C57BL/6 mice. METHODS Male C57BL/6J mice were fed a high-fat diet (60% kcal as fat) throughout the study. After 4 months of diet, the mice were infused with AngII until the end of the study. Mice with at least a 25% increase in the luminal diameter of the abdominal aorta after 4 weeks of AngII infusion were stratified into 2 groups. The first group received a control antisense oligonucleotide (Ctr ASO), and the second group received ASO that suppresses SAA (SAA-ASO) until the end of the study. RESULTS Plasma SAA levels were significantly reduced by the SAA ASO treatment. While mice that received the control ASO had continued aortic dilation throughout the AngII infusion periods, the mice that received SAA-ASO had a significant reduction in the progression of aortic dilation, which was associated with significant reductions in matrix metalloprotease activities, decreased macrophage infiltration and decreased elastin breaks in the abdominal aortas. CONCLUSIONS We demonstrate for the first time that suppression of SAA protects obese C57BL/6 mice from the progression of AngII-induced AAA. Suppression of SAA may be a therapeutic approach to limit AAA progression.
Collapse
Affiliation(s)
- Preetha Shridas
- Department of Internal Medicine, University of Kentucky, Lexington, 40536, Kentucky, USA; Saha Cardiovascular Research Center, University of Kentucky, Lexington, 40536, Kentucky, USA.
| | - Ailing Ji
- Saha Cardiovascular Research Center, University of Kentucky, Lexington, 40536, Kentucky, USA
| | - Andrea C Trumbauer
- Saha Cardiovascular Research Center, University of Kentucky, Lexington, 40536, Kentucky, USA
| | - Victoria P Noffsinger
- Saha Cardiovascular Research Center, University of Kentucky, Lexington, 40536, Kentucky, USA
| | - Luke W Meredith
- Saha Cardiovascular Research Center, University of Kentucky, Lexington, 40536, Kentucky, USA
| | - Frederick C de Beer
- Department of Internal Medicine, University of Kentucky, Lexington, 40536, Kentucky, USA; Saha Cardiovascular Research Center, University of Kentucky, Lexington, 40536, Kentucky, USA
| | | | - Nancy R Webb
- Saha Cardiovascular Research Center, University of Kentucky, Lexington, 40536, Kentucky, USA; Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, 40536, Kentucky, USA
| | - Dennis G Karounos
- Department of Internal Medicine, University of Kentucky, Lexington, 40536, Kentucky, USA; Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, 40536, Kentucky, USA; Department of Veterans Affairs, Lexington, 40536, Kentucky, USA
| | - Lisa R Tannock
- Department of Internal Medicine, University of Kentucky, Lexington, 40536, Kentucky, USA; Saha Cardiovascular Research Center, University of Kentucky, Lexington, 40536, Kentucky, USA
| |
Collapse
|
4
|
Lei M, Feng T, Zhang M, Chang F, Liu J, Sun B, Chen M, Li Y, Zhang L, Tang P, Yin P. CHRONIC CRITICAL ILLNESS-INDUCED MUSCLE ATROPHY: INSIGHTS FROM A TRAUMA MOUSE MODEL AND POTENTIAL MECHANISM MEDIATED VIA SERUM AMYLOID A. Shock 2024; 61:465-476. [PMID: 38517246 DOI: 10.1097/shk.0000000000002322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
ABSTRACT Background: Chronic critical illness (CCI), which was characterized by persistent inflammation, immunosuppression, and catabolism syndrome (PICS), often leads to muscle atrophy. Serum amyloid A (SAA), a protein upregulated in critical illness myopathy, may play a crucial role in these processes. However, the effects of SAA on muscle atrophy in PICS require further investigation. This study aims to develop a mouse model of PICS combined with bone trauma to investigate the mechanisms underlying muscle weakness, with a focus on SAA. Methods: Mice were used to examine the effects of PICS after bone trauma on immune response, muscle atrophy, and bone healing. The mice were divided into two groups: a bone trauma group and a bone trauma with cecal ligation and puncture group. Tibia fracture surgery was performed on all mice, and PICS was induced through cecal ligation and puncture surgery in the PICS group. Various assessments were conducted, including weight change analysis, cytokine analysis, hematological analysis, grip strength analysis, histochemical staining, and immunofluorescence staining for SAA. In vitro experiments using C2C12 cells (myoblasts) were also conducted to investigate the role of SAA in muscle atrophy. The effects of inhibiting receptor for advanced glycation endproducts (RAGE) or JAK2 on SAA-induced muscle atrophy were examined. Bioinformatic analysis was conducted using a dataset from the GEO database to identify differentially expressed genes and construct a coexpression network. Results: Bioinformatic analysis confirmed that SAA was significantly upregulated in muscle tissue of patients with intensive care unit-induced muscle atrophy. The PICS animal models exhibited significant weight loss, spleen enlargement, elevated levels of proinflammatory cytokines, and altered hematological profiles. Evaluation of muscle atrophy in the animal models demonstrated decreased muscle mass, grip strength loss, decreased diameter of muscle fibers, and significantly increased expression of SAA. In vitro experiment demonstrated that SAA decreased myotube formation, reduced myotube diameter, and increased the expression of muscle atrophy-related genes. Furthermore, SAA expression was associated with activation of the FOXO signaling pathway, and inhibition of RAGE or JAK2/STAT3-FOXO signaling partially reversed SAA-induced muscle atrophy. Conclusions: This study successfully develops a mouse model that mimics PICS in CCI patients with bone trauma. Serum amyloid A plays a crucial role in muscle atrophy through the JAK2/STAT3-FOXO signaling pathway, and targeting RAGE or JAK2 may hold therapeutic potential in mitigating SAA-induced muscle atrophy.
Collapse
|
5
|
Li M, Kim YM, Koh JH, Park J, Kwon HM, Park JH, Jin J, Park Y, Kim D, Kim WU. Serum amyloid A expression in liver promotes synovial macrophage activation and chronic arthritis via NFAT5. J Clin Invest 2024; 134:e167835. [PMID: 38426494 PMCID: PMC10904059 DOI: 10.1172/jci167835] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 01/05/2024] [Indexed: 03/02/2024] Open
Abstract
Nuclear factor of activated T-cells 5 (NFAT5), an osmo-sensitive transcription factor, can be activated by isotonic stimuli, such as infection. It remains unclear, however, whether NFAT5 is required for damage-associated molecular pattern-triggered (DAMP-triggered) inflammation and immunity. Here, we found that several DAMPs increased NFAT5 expression in macrophages. In particular, serum amyloid A (SAA), primarily generated by the liver, substantially upregulated NFAT5 expression and activity through TLR2/4-JNK signalling pathway. Moreover, the SAA-TLR2/4-NFAT5 axis promoted migration and chemotaxis of macrophages in an IL-6- and chemokine ligand 2-dependent (CCL2-dependent) manner in vitro. Intraarticular injection of SAA markedly accelerated macrophage infiltration and arthritis progression in mice. By contrast, genetic ablation of NFAT5 or TLR2/4 rescued the pathology induced by SAA, confirming the SAA-TLR2/4-NFAT5 axis in vivo. Myeloid-specific depletion of NFAT5 also attenuated SAA-accelerated arthritis. Of note, inflammatory arthritis in mice strikingly induced SAA overexpression in the liver. Conversely, forced overexpression of the SAA gene in the liver accelerated joint damage, indicating that the liver contributes to bolstering chronic inflammation at remote sites by secreting SAA. Collectively, this study underscores the importance of the SAA-TLR2/4-NFAT5 axis in innate immunity, suggesting that acute phase reactant SAA mediates mutual interactions between liver and joints and ultimately aggravates chronic arthritis by enhancing macrophage activation.
Collapse
Affiliation(s)
- Meiling Li
- Center for Integrative Rheumatoid Transcriptomics and Dynamics
- Department of Biomedicine and Health Sciences, and
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Yu-Mi Kim
- Center for Integrative Rheumatoid Transcriptomics and Dynamics
- Department of Biomedicine and Health Sciences, and
| | - Jung Hee Koh
- Division of Rheumatology, Department of Internal Medicine, Uijeoungbu St.Mary’s hospital, the Catholic University of Korea, Uijeoungbu, Republic of Korea
| | - Jihyun Park
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - H. Moo Kwon
- School of Nano-Bioscience and Chemical Engineering, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea
| | - Jong-Hwan Park
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Chonnam National University, Gwangju, Republic of Korea
| | - Jingchun Jin
- Department of Immunology of Yanbian University Hospital, Yanji, Jilin Province, China
- Key Laboratory of Science and Technology Department (Jilin Province), Cancer Research Center, Yanji, Jilin Province, China
| | - Youngjae Park
- Department of Biomedicine and Health Sciences, and
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Donghyun Kim
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, Republic of Korea
- Institute of Endemic Diseases, Seoul National University Medical Research Center, Seoul, Republic of Korea
| | - Wan-Uk Kim
- Center for Integrative Rheumatoid Transcriptomics and Dynamics
- Department of Biomedicine and Health Sciences, and
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| |
Collapse
|
6
|
Li S, Kong D, Zhang W, Li Y, Wang H, Yang R, Sun Q, Wang Z, Zhang Z. Low SAA4 gene expression is associated with advanced HCC stage and a poor prognosis. Clin Exp Med 2024; 24:31. [PMID: 38300370 PMCID: PMC10834558 DOI: 10.1007/s10238-023-01279-8] [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: 05/30/2023] [Accepted: 11/20/2023] [Indexed: 02/02/2024]
Abstract
At present, although there are tumor markers for hepatocellular carcinoma (HCC), markers with better predictive efficiency are needed. SAA4 gene expression in liver tumor and paracancerous tissues was analyzed using The Cancer Genome Atlas database. The differentially expressed genes (DEGs) were analyzed and visualized by heatmap and volcano plot. Survival analysis was performed based on SAA4 expression. SAA4 expression was compared in patients grouped based on clinicopathological features, and gene set enrichment analysis (GSEA) was conducted. Immunohistochemical staining was used to verify the SAA4 protein staining intensity from The Human Protein Atlas database and our center's samples. The diagnostic value of SAA4 for HCC was evaluated by receiver operating characteristic curves. SAA4 was expressed at low levels in HCC tissues, and low SAA4 expression was associated with a poor prognosis in HCC. In addition, SAA4 expression decreased with HCC progression. There were 188 upregulated DEGs and 1551 downregulated DEGs between the high and low SAA4 expression groups. Complement and coagulation cascades, fatty acid metabolism, and ECM receptor interaction were significantly enriched in the GSEA. SAA4 had good predictive efficacy for HCC and even early HCC and was superior to AFP. In general, low SAA4 expression was associated with advanced HCC stage and a poor prognosis. In addition, SAA4 may be helpful for the diagnosis of early HCC and may become a novel tumor marker with good predictive power for HCC.
Collapse
Affiliation(s)
- Shilong Li
- Department of Gastrointestinal Surgery, Shaoxing Second Hospital, Zhejiang, China
| | - Dejun Kong
- Biological Sample Resource Sharing Center, Tianjin First Central Hospital, Tianjin, China
- School of Medicine, Nankai University, Tianjin, China
| | - Weiqi Zhang
- School of Medicine, Nankai University, Tianjin, China
| | - Yan Li
- Biological Sample Resource Sharing Center, Tianjin First Central Hospital, Tianjin, China
| | - Hao Wang
- The First Central Clinical School, Tianjin Medical University, Tianjin, China
| | - Ruining Yang
- The First Central Clinical School, Tianjin Medical University, Tianjin, China
| | - Qian Sun
- The First Central Clinical School, Tianjin Medical University, Tianjin, China
| | - Zhenglu Wang
- Biological Sample Resource Sharing Center, Tianjin First Central Hospital, Tianjin, China.
| | - Zhongwei Zhang
- Department of Gastrointestinal Surgery, Shaoxing Second Hospital, Zhejiang, China.
| |
Collapse
|
7
|
Lang Y, Wang Q, Sheng Q, Lu S, Yang M, Kong Z, Gao Y, Fan X, Shen N, Wang R, Lv Z. FTO-mediated m6A modification of serum amyloid A2 mRNA promotes podocyte injury and inflammation by activating the NF-κB signaling pathway. FASEB J 2024; 38:e23409. [PMID: 38193628 DOI: 10.1096/fj.202301419rr] [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: 07/13/2023] [Revised: 12/17/2023] [Accepted: 12/21/2023] [Indexed: 01/10/2024]
Abstract
Diabetic kidney disease (DKD) is one of the severe complications of diabetes mellitus, yet there is no effective treatment. Exploring the development of DKD is essential to treatment. Podocyte injury and inflammation are closely related to the development of DKD. However, the mechanism of podocyte injury and progression in DKD remains largely unclear. Here, we observed that FTO expression was significantly upregulated in high glucose-induced podocytes and that overexpression of FTO promoted podocyte injury and inflammation. By performing RNA-seq and MeRIP-seq with control podocytes and high glucose-induced podocytes with or without FTO knockdown, we revealed that serum amyloid A2 (SAA2) is a target of FTO-mediated m6A modification. Knockdown of FTO markedly increased SAA2 mRNA m6A modification and decreased SAA2 mRNA expression. Mechanistically, we demonstrated that SAA2 might participate in podocyte injury and inflammation through activation of the NF-κB signaling pathway. Furthermore, by generating podocyte-specific adeno-associated virus 9 (AAV9) to knockdown SAA2 in mice, we discovered that the depletion of SAA2 significantly restored podocyte injury and inflammation. Together, our results suggested that upregulation of SAA2 promoted podocyte injury through m6A-dependent regulation, thus suggesting that SAA2 may be a therapeutic target for diabetic kidney disease.
Collapse
Affiliation(s)
- Yating Lang
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Qimeng Wang
- Department of Nephrology, Shandong Provincial Hospital, Shandong University, Jinan, China
| | - Qinghao Sheng
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Shangwei Lu
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Meilin Yang
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Zhijuan Kong
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Ying Gao
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Xiaoting Fan
- Department of Nephrology, Shandong Provincial Hospital, Shandong University, Jinan, China
| | - Ning Shen
- Department of Nephrology, Shandong Provincial Hospital, Shandong University, Jinan, China
| | - Rong Wang
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
- Department of Nephrology, Shandong Provincial Hospital, Shandong University, Jinan, China
| | - Zhimei Lv
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
- Department of Nephrology, Shandong Provincial Hospital, Shandong University, Jinan, China
| |
Collapse
|
8
|
Feng H, Zhou W, Yang Y, Zhang X, Mao R, Zhou Y, Cheng T, Xiao H, Rao Y, He J, Zhao P, Li J, Jiang C. Serum amyloid A aggravates endotoxin-induced ocular inflammation through the regulation of retinal microglial activation. FASEB J 2024; 38:e23389. [PMID: 38153347 DOI: 10.1096/fj.202301150rrr] [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: 06/09/2023] [Revised: 11/23/2023] [Accepted: 12/11/2023] [Indexed: 12/29/2023]
Abstract
Serum amyloid A (SAA) are major acute-phase response proteins which actively participate in many inflammatory diseases. This study was designed to explore the function of SAA in acute ocular inflammation and the underlying mechanism. We found that SAA3 was upregulated in endotoxin-induced uveitis (EIU) mouse model, and it was primarily expressed in microglia. Recombinant SAA protein augmented intraocular inflammation in EIU, while the inhibition of Saa3 by siRNA effectively alleviated the inflammatory responses and rescued the retina from EIU-induced structural and functional damage. Further study showed that the recombinant SAA protein activated microglia, causing characteristic morphological changes and driving them further to pro-inflammatory status. The downregulation of Saa3 halted the amoeboid change of microglia, reduced the secretion of pro-inflammatory factors, and increased the expression of tissue-reparative genes. SAA3 also regulated the autophagic activity of microglial cells. Finally, we showed that the above effect of SAA on microglial cells was at least partially mediated through the expression and signaling of Toll-like receptor 4 (TLR4). Collectively, our study suggested that microglial cell-expressed SAA could be a potential target in treating acute ocular inflammation.
Collapse
Affiliation(s)
- Huazhang Feng
- Department of Ophthalmology, Eye & ENT Hospital, Shanghai Medical College, Fudan University, Shanghai, China
- Department of Ophthalmology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wenchuan Zhou
- Department of Ophthalmology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yuan Yang
- Department of Ophthalmology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xuerui Zhang
- Department of Ophthalmology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ruixue Mao
- Naval Healthcare Information Center, PLA Naval Medical University, Shanghai, China
| | - Yutong Zhou
- Department of Ophthalmology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Tongjie Cheng
- Department of Ophthalmology, Eye & ENT Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Haodong Xiao
- Department of Ophthalmology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yuqing Rao
- Department of Ophthalmology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jincan He
- Department of Ophthalmology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Peiquan Zhao
- Department of Ophthalmology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jing Li
- Department of Ophthalmology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chunhui Jiang
- Department of Ophthalmology, Eye & ENT Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| |
Collapse
|
9
|
Ji A, Trumbauer AC, Noffsinger VP, Meredith LW, Dong B, Wang Q, Guo L, Li X, De Beer FC, Webb NR, Tannock LR, Starr ME, Waters CM, Shridas P. Deficiency of Acute-Phase Serum Amyloid A Exacerbates Sepsis-Induced Mortality and Lung Injury in Mice. Int J Mol Sci 2023; 24:17501. [PMID: 38139330 PMCID: PMC10744229 DOI: 10.3390/ijms242417501] [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: 11/10/2023] [Revised: 12/11/2023] [Accepted: 12/13/2023] [Indexed: 12/24/2023] Open
Abstract
Serum amyloid A (SAA) is a family of proteins, the plasma levels of which may increase >1000-fold in acute inflammatory states. We investigated the role of SAA in sepsis using mice deficient in all three acute-phase SAA isoforms (SAA-TKO). SAA deficiency significantly increased mortality rates in the three experimental sepsis mouse models: cecal ligation and puncture (CLP), cecal slurry (CS) injection, and lipopolysaccharide (LPS) treatments. SAA-TKO mice had exacerbated lung pathology compared to wild-type (WT) mice after CLP. A bulk RNA sequencing performed on lung tissues excised 24 h after CLP indicated significant enrichment in the expression of genes associated with chemokine production, chemokine and cytokine-mediated signaling, neutrophil chemotaxis, and neutrophil migration in SAA-TKO compared to WT mice. Consistently, myeloperoxidase activity and neutrophil counts were significantly increased in the lungs of septic SAA-TKO mice compared to WT mice. The in vitro treatment of HL-60, neutrophil-like cells, with SAA or SAA bound to a high-density lipoprotein (SAA-HDL), significantly decreased cellular transmigration through laminin-coated membranes compared to untreated cells. Thus, SAA potentially prevents neutrophil transmigration into injured lungs, thus reducing exacerbated tissue injury and mortality. In conclusion, we demonstrate for the first time that endogenous SAA plays a protective role in sepsis, including ameliorating lung injury.
Collapse
Affiliation(s)
- Ailing Ji
- Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY 40536, USA; (A.J.); (A.C.T.); (V.P.N.); (L.W.M.); (Q.W.); (L.G.); (X.L.); (N.R.W.); (L.R.T.)
| | - Andrea C. Trumbauer
- Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY 40536, USA; (A.J.); (A.C.T.); (V.P.N.); (L.W.M.); (Q.W.); (L.G.); (X.L.); (N.R.W.); (L.R.T.)
| | - Victoria P. Noffsinger
- Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY 40536, USA; (A.J.); (A.C.T.); (V.P.N.); (L.W.M.); (Q.W.); (L.G.); (X.L.); (N.R.W.); (L.R.T.)
| | - Luke W. Meredith
- Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY 40536, USA; (A.J.); (A.C.T.); (V.P.N.); (L.W.M.); (Q.W.); (L.G.); (X.L.); (N.R.W.); (L.R.T.)
| | - Brittany Dong
- Department of Physiology, University of Kentucky, Lexington, KY 40536, USA; (B.D.); (C.M.W.)
| | - Qian Wang
- Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY 40536, USA; (A.J.); (A.C.T.); (V.P.N.); (L.W.M.); (Q.W.); (L.G.); (X.L.); (N.R.W.); (L.R.T.)
| | - Ling Guo
- Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY 40536, USA; (A.J.); (A.C.T.); (V.P.N.); (L.W.M.); (Q.W.); (L.G.); (X.L.); (N.R.W.); (L.R.T.)
| | - Xiangan Li
- Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY 40536, USA; (A.J.); (A.C.T.); (V.P.N.); (L.W.M.); (Q.W.); (L.G.); (X.L.); (N.R.W.); (L.R.T.)
- Department of Physiology, University of Kentucky, Lexington, KY 40536, USA; (B.D.); (C.M.W.)
- Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY 40536, USA;
| | - Frederick C. De Beer
- Department of Internal Medicine, University of Kentucky, Lexington, KY 40536, USA;
| | - Nancy R. Webb
- Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY 40536, USA; (A.J.); (A.C.T.); (V.P.N.); (L.W.M.); (Q.W.); (L.G.); (X.L.); (N.R.W.); (L.R.T.)
- Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY 40536, USA;
| | - Lisa R. Tannock
- Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY 40536, USA; (A.J.); (A.C.T.); (V.P.N.); (L.W.M.); (Q.W.); (L.G.); (X.L.); (N.R.W.); (L.R.T.)
- Department of Internal Medicine, University of Kentucky, Lexington, KY 40536, USA;
| | - Marlene E. Starr
- Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY 40536, USA;
- Department of Surgery, College of Medicine, University of Kentucky, Lexington, KY 40536, USA
| | - Christopher M. Waters
- Department of Physiology, University of Kentucky, Lexington, KY 40536, USA; (B.D.); (C.M.W.)
| | - Preetha Shridas
- Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY 40536, USA; (A.J.); (A.C.T.); (V.P.N.); (L.W.M.); (Q.W.); (L.G.); (X.L.); (N.R.W.); (L.R.T.)
- Department of Internal Medicine, University of Kentucky, Lexington, KY 40536, USA;
| |
Collapse
|
10
|
Zámocký M, Ferianc P. Discovering the deep evolutionary roots of serum amyloid A protein family. Int J Biol Macromol 2023; 252:126537. [PMID: 37634776 DOI: 10.1016/j.ijbiomac.2023.126537] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/23/2023] [Accepted: 08/24/2023] [Indexed: 08/29/2023]
Abstract
Deep evolutionary origin of the conserved animal serum amyloid A (SAA) apolipoprotein family leading to yet unknown highly similar SAA-like sequences occurring in certain bacterial genomes is demonstrated in this contribution. Horizontal gene transfer event of corresponding genes between gut bacteria and non-vertebrate animals was discovered in the reconstructed phylogenetic tree obtained with maximum likelihood and neighbor-joining methods, respectively. This detailed phylogeny based on totally 128 complete sequences comprised diverse serum amyloid A isoforms from various animal vertebrate and non-vertebrate phyla and also corresponding genes coding for highly similar proteins from animal gut bacteria. Typical largely conserved sequence motifs and a peculiar structural fold consisting mainly of four α-helices in a bundle within all reconstructed clades of the SAA protein family are discussed with respect to their supposed biological functions in various organisms that contain corresponding genes.
Collapse
Affiliation(s)
- Marcel Zámocký
- Laboratory of Phylogenomic Ecology, Institute of Molecular Biology, Slovak Academy of Sciences, Dúbravská cesta 21, SK-84551 Bratislava, Slovakia; Department of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University Bratislava, Mlynská dolina, Ilkovičova 6, SK-84215 Bratislava, Slovakia.
| | - Peter Ferianc
- Laboratory of Phylogenomic Ecology, Institute of Molecular Biology, Slovak Academy of Sciences, Dúbravská cesta 21, SK-84551 Bratislava, Slovakia
| |
Collapse
|
11
|
Zhao Y, Chen Y, Wan Q, Xiao C, Guo Z, Du X, Hu Y, Zheng A, Cao Z. Identification of SAA1 as a novel metastasis marker in ovarian cancer and development of a graphene-based detection platform for early assessment. J Cancer Res Clin Oncol 2023; 149:16391-16406. [PMID: 37707574 DOI: 10.1007/s00432-023-05296-8] [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: 06/18/2023] [Accepted: 08/14/2023] [Indexed: 09/15/2023]
Abstract
BACKGROUND Ovarian cancer (OC) is a prevalent gynecological malignancy with the highest mortality rate, which generally diagnosed at late stages due to the lack of effective early screening methods and the nonspecific symptoms. Hence, here we aim to identify new metastasis markers and develop a novel detection method with the characteristics of high sensitivity, rapid detection, high specificity, and low cost when compared with other conventional detection technologies. METHODS Blood from OC patients with or without metastasis were collected and analyzed by 4D Label free LC - MS/MS. Surgically resect samples from OC patients were collected for Single cell RNA sequencing (sc-RNA seq). Short hairpin RNA (shRNA) was used to silence SAA1 expression in SKOV3 and ID8 to verify the relationship between endogenous SAA1 and tumor invasion or metastasis. The functional graphene chips prepared by covalent binding were used for SAA1 detection. RESULTS In our study, we identified Serum Amyloid A1 (SAA1) as a hematological marker of OC metastasis by comprehensive analysis of proteins in plasma from OC patients with or without metastasis using 4D Label free LC - MS/MS and gene expression patterns from The Cancer Genome Atlas (TCGA) and Gene Expression Omnibus (GEO) databases. Further validation using tumor tissues and plasma from human OC and mouse OC model confirmed the correlation between SAA1 and tumor metastasis. Importantly, sc-RNA seq of human OC samples revealed that SAA1 was specifically expressed in tumor cells and upregulated in the metastasis group. The functional role of SAA1 in metastasis was demonstrated through experiments in vitro and in vivo. Based on these findings, we designed and investigated a graphene-based platform for SAA1 detection to predict the risk of metastasis of OC patients. CONCLUSION Our study suggests that SAA1 is a biomarker of OC metastasis, and we have developed a rapid and highly sensitive platform using graphene chips to detection of plasma SAA1 for the early assessment of metastasis in OC patients.
Collapse
Affiliation(s)
- Yilin Zhao
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, State Key Laboratory of Biotherapy, West China Second University Hospital, Sichuan University, No.17 Section 3, Renmin South Road, Chengdu, 610041, People's Republic of China
| | - Yao Chen
- Department of Breast Surgery, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Qi Wan
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, State Key Laboratory of Biotherapy, West China Second University Hospital, Sichuan University, No.17 Section 3, Renmin South Road, Chengdu, 610041, People's Republic of China
- Department of Gynecology and Obstetrics, West China Second Hospital, Sichuan University, Chengdu, 610041, China
| | - Chengju Xiao
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, State Key Laboratory of Biotherapy, West China Second University Hospital, Sichuan University, No.17 Section 3, Renmin South Road, Chengdu, 610041, People's Republic of China
| | - Zhiqing Guo
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, State Key Laboratory of Biotherapy, West China Second University Hospital, Sichuan University, No.17 Section 3, Renmin South Road, Chengdu, 610041, People's Republic of China
| | - Xinjie Du
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, State Key Laboratory of Biotherapy, West China Second University Hospital, Sichuan University, No.17 Section 3, Renmin South Road, Chengdu, 610041, People's Republic of China
| | - Yan Hu
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, State Key Laboratory of Biotherapy, West China Second University Hospital, Sichuan University, No.17 Section 3, Renmin South Road, Chengdu, 610041, People's Republic of China.
| | - Ai Zheng
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, State Key Laboratory of Biotherapy, West China Second University Hospital, Sichuan University, No.17 Section 3, Renmin South Road, Chengdu, 610041, People's Republic of China.
- Department of Gynecology and Obstetrics, West China Second Hospital, Sichuan University, Chengdu, 610041, China.
| | - Zhongwei Cao
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, State Key Laboratory of Biotherapy, West China Second University Hospital, Sichuan University, No.17 Section 3, Renmin South Road, Chengdu, 610041, People's Republic of China.
| |
Collapse
|
12
|
Wang X, Wen S, Du X, Zhang Y, Yang X, Zou R, Feng B, Fu X, Jiang F, Zhou G, Liu Z, Zhu W, Ma R, Feng J, Shen B. SAA suppresses α-PD-1 induced anti-tumor immunity by driving T H2 polarization in lung adenocarcinoma. Cell Death Dis 2023; 14:718. [PMID: 37925492 PMCID: PMC10625560 DOI: 10.1038/s41419-023-06198-w] [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: 05/22/2023] [Revised: 09/21/2023] [Accepted: 09/28/2023] [Indexed: 11/06/2023]
Abstract
Cancer stem cells (CSCs) are believed to be crucial in the initiation, progression, and recurrence of cancer. CSCs are also known to be more resistant to cancer treatments. However, the interaction between CSCs and the immune microenvironment is complex and not fully understood. In current study we used single cell RNA sequence (scRNA-Seq, public dataset) technology to identify the characteristic of CSCs. We found that the lung adenocarcinoma cancer stem population is highly inflammatory and remodels the tumor microenvironment by secreting inflammatory factors, specifically the acute phase protein serum amyloid A (SAA). Next, we developed an ex-vivo autologous patient-derived organoids (PDOs) and peripheral blood mononuclear cells (PBMCs) co-culture model to evaluate the immune biological impact of SAA. We found that SAA not only promotes chemoresistance by inducing cancer stem transformation, but also restricts anti-tumor immunity and promotes tumor fibrosis by driving type 2 immunity, and α-SAA neutralization antibody could restrict treatment resistant and tumor fibrosis. Mechanically, we found that the malignant phenotype induced by SAA is dependent on P2X7 receptor. Our data indicate that cancer stem cells secreted SAA have significant biological impact to promote treatment resistant and tumor fibrosis by driving cancer stemness transformation and type 2 immunity polarization via P2X7 receptor. Notably, α-SAA neutralization antibody shows therapeutic potential by restricting these malignant phenotypes.
Collapse
Affiliation(s)
- Xin Wang
- Department of Oncology, The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing, China
| | - Shaodi Wen
- Department of Oncology, The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing, China
| | - Xiaoyue Du
- Department of Oncology, The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing, China
| | - Yihan Zhang
- Department of Oncology, The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing, China
| | - Xiao Yang
- Department of Clinical Laboratory, Jiangsu Cancer Hospital, The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Institute of Cancer Research, Nanjing, China
| | - Renrui Zou
- Department of Oncology, The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing, China
| | - Bing Feng
- Department of Oncology, The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing, China
| | - Xiao Fu
- Department of General Surgery, Nanjing Drum Tower Hospital, Nanjing, China
- Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Feng Jiang
- Department of Thoracic Surgery, Jiangsu Cancer Hospital, The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Institute of Cancer Research, Nanjing, China
| | - Guoren Zhou
- Department of Oncology, The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing, China
| | - Zi Liu
- Nanjing Advanced Analysis Tech. (NAAT) Co., LTD, Nanjing, China
| | - Wei Zhu
- School of Medicine, Jiangsu University, Zhenjiang, China
| | - Rong Ma
- Research Center for Clinical Oncology, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
| | - Jifeng Feng
- Department of Oncology, The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing, China.
| | - Bo Shen
- Department of Oncology, The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing, China.
| |
Collapse
|
13
|
Jafari S, Sharifiyazdi H, Yaghoobpour T, Ghane M, Nazifi S. Molecular and hematological investigation of Trypanosoma evansi infection in Iranian one-humped camels (Camelus dromedarius). Parasitol Res 2023; 122:2091-2099. [PMID: 37433937 DOI: 10.1007/s00436-023-07908-1] [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: 02/10/2023] [Accepted: 06/19/2023] [Indexed: 07/13/2023]
Abstract
Trypanosoma species cause animal trypanosomiasis that infects many animals. Trypanosoma evansi is an organism that infects camels. There are many economic problems associated with this disease, including lower milk and meat yields and abortions. The purpose of the current survey was molecular study of the presence of Trypanosoma in dromedary camel blood in the south of Iran, and its effects on the hematologic, and some acute-phase protein changes. Blood samples were aseptically collected from the jugular vein of dromedary camels (n = 100; aged from 1 to 6 years) originating from Fars Province in EDTA-coated vacutainers. Genomic DNA from 100 µL of the whole blood was extracted and amplified using a PCR assay based on ITS1, 5.8S, and ITS2 ribosomal regions. Also, the PCR products obtained were sequenced. Moreover, the changes in hematological parameters and serum acute-phase proteins (serum amyloid A, alpha-1 acid glycoprotein, and haptoglobin) were measured. Among 100 tested blood, nine samples (9%, 95% CI: 4.2-16.4%) were found positive by the PCR assay. The phylogenetic tree and blast analysis showed four different genotypes closely related to the strains (accession numbers: JN896754 and JN896755) previously reported from dromedary camels in Yazd Province, center Iran. Based on hematological analysis, normocytic and normochromic anemia and lymphocytosis were detected in the PCR-positive cases compared with the negative group. Furthermore, alpha-1 acid glycoprotein was significantly increased in the positive cases. There was a substantial and positive relation between the number of lymphocytes, and the levels of alpha-1 acid glycoprotein and serum amyloid A in the blood (p = 0.045, r = 0.223 and p = 0.036, r = 0.234, respectively). A noticeable frequency of T. evansi infection was reported in dromedary camels in south Iran. This is the first report on the genetic diversity of T. evansi in this region. There was a significant association among Trypanosoma infection, lymphocytosis, and alpha-1 acid glycoprotein. Trypanosoma-positive camels had a significant decrease in hematocrit (HCT), hemoglobin (Hb), and red blood cell (RBC) values compared to the non-infected group. Further experimental studies are needed to elucidate the hematological and acute-phase protein alteration during a different phase of Trypanosoma spp. infection.
Collapse
Affiliation(s)
- Sanaz Jafari
- Department of Clinical Sciences, School of Veterinary Medicine, Shiraz University, P.O. Box 1731, Shiraz, 71345, Iran
| | - Hassan Sharifiyazdi
- Department of Clinical Sciences, School of Veterinary Medicine, Shiraz University, P.O. Box 1731, Shiraz, 71345, Iran.
| | - Tina Yaghoobpour
- Department of Clinical Sciences, School of Veterinary Medicine, Shiraz University, P.O. Box 1731, Shiraz, 71345, Iran
| | - Mohsen Ghane
- Department of Clinical Sciences, School of Veterinary Medicine, Shiraz University, P.O. Box 1731, Shiraz, 71345, Iran
| | - Saeed Nazifi
- Department of Clinical Sciences, School of Veterinary Medicine, Shiraz University, P.O. Box 1731, Shiraz, 71345, Iran
| |
Collapse
|
14
|
Yang J, Yang K, Wang K, Zhou D, Zhou J, Du X, Liu S, Cheng Z. Serum amyloid A regulates TLR2/4-mediated IFN-β signaling pathway against Marek's disease virus. Virus Res 2023; 326:199044. [PMID: 36652973 DOI: 10.1016/j.virusres.2023.199044] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 01/09/2023] [Accepted: 01/13/2023] [Indexed: 01/16/2023]
Abstract
Serum amyloid A (SAA), an acute response phase protein (APP), is crucial for the innate immune response during pathogenic microorganisms' invasion. Marek's disease virus (MDV) is a highly oncogenic alphaherpesvirus that activates multiple innate immune molecules, including SAA, in the host during infection. However, the pathway through which SAA participates in MDV-induced host innate immunity remains unknown. The present study aimed to elucidate the pathway through which SAA exerts its anti-MDV function. We observed that MDV infection in vivo and in vitro significantly elevated SAA expression. Furthermore, through SAA overexpression and knockdown experiments, we demonstrated that SAA could inhibit MDV replication. Subsequently, we found that SAA activated Toll-Like Receptor 2/4 (TLR2/4) -mediated Interferon Beta (IFN-β) promoter activity and IFN regulatory factor 7 (IRF7) promoter activity. During MDV infection, SAA enhanced TLR2/4-mediated IFN-β signal transduction and messenger RNAs (mRNAs) expression of type I IFN (IFN-I) and interferon-stimulated genes (ISGs). Finally, TLR2/4 inhibitor OxPAPC inhibits the anti-MDV activity of SAA. These results demonstrated that SAA inhibits MDV replication and enhancing TLR2/4-mediated IFN-β signal transduction to promote IFNs and ISGs expression. This finding is the first to demonstrate the signaling pathway by which SAA exerts its anti-MDV function. It also provides new insights into the control of oncogenic herpesviruses from the perspective of acute response phase proteins.
Collapse
Affiliation(s)
- Jianhao Yang
- College of Veterinary Medicine, Shandong Agricultural University, 61 Daizong Street, Taian 271018, China
| | - Kunmei Yang
- College of Veterinary Medicine, Shandong Agricultural University, 61 Daizong Street, Taian 271018, China
| | - Kang Wang
- College of Veterinary Medicine, Shandong Agricultural University, 61 Daizong Street, Taian 271018, China
| | - Defang Zhou
- College of Veterinary Medicine, Shandong Agricultural University, 61 Daizong Street, Taian 271018, China
| | - Jing Zhou
- College of Veterinary Medicine, Shandong Agricultural University, 61 Daizong Street, Taian 271018, China
| | - Xusheng Du
- College of Veterinary Medicine, Shandong Agricultural University, 61 Daizong Street, Taian 271018, China
| | - Shenglong Liu
- College of Veterinary Medicine, Shandong Agricultural University, 61 Daizong Street, Taian 271018, China
| | - Ziqiang Cheng
- College of Veterinary Medicine, Shandong Agricultural University, 61 Daizong Street, Taian 271018, China.
| |
Collapse
|
15
|
Liu Y, Liu J, Liu A, Yin H, Burd I, Lei J. Maternal siRNA silencing of placental SAA2 mitigates preterm birth following intrauterine inflammation. Front Immunol 2022; 13:902096. [PMID: 36211368 PMCID: PMC9539923 DOI: 10.3389/fimmu.2022.902096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 08/24/2022] [Indexed: 11/17/2022] Open
Abstract
The placental inflammatory processes induced maternally result in preterm birth (PTB). Serum amyloid A (SAA) is a well-known biomarker of inflammation. The objective of this study was to investigate whether murine placental SAA isoforms (SAA1–4) participate in the mechanism of spontaneous PTB and whether maternal regulation of SAA production may serve as a therapeutic approach. During the gestation, all isoforms of SAA were detectable except SAA2. The mouse model of intrauterine inflammation was established using LPS infusion to the uterus. Following intrauterine inflammation, placental SAA2 increased significantly. Inhibition of Saa2, using siSaa2, markedly decreased PTB. The increased placental expression of pro-inflammatory cytokines Il1β, Il6, and Tnfα were downregulated by siSaa2 treatment. Maternal inhibition of Saa2 did not change the expression of Saa1–4 in the fetal brain. Explant inflammatory culture of placentas with siSaa2 showed similar results to our in vivo experiments. This study demonstrates the highly expressed placental SAA2 as a novel therapeutic target, and maternal administration of siRNA as a promising approach to alleviate PTB.
Collapse
Affiliation(s)
- Yang Liu
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, United States
- Department of Obstetrics and Gynecology, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Jin Liu
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Anguo Liu
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Hillary Yin
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Irina Burd
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, United States
- *Correspondence: Irina Burd, ; Jun Lei,
| | - Jun Lei
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, United States
- *Correspondence: Irina Burd, ; Jun Lei,
| |
Collapse
|
16
|
Sottini L, Veniero P, De Gaetano A, Olivi L, Brunori G. [Hyperphosphatemic pseudotumoral calcinosis due to FGF23 mutation with secondary amyloidosis]. G Ital Nefrol 2022; 39:2022-vol4. [PMID: 36073335] [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] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A 44 years old man was admitted for nephrotic syndrome and rapidly progressive renal failure. Two firm, tumour-like masses were localized around the left shoulder and the right hip joint. Since the age of 8 years old, the patient had a history of metastatic calcification of the soft tissues suggesting hyperphosphatemic pseudotumoral calcinosis. Despite treatment for a long time with phosphate binders the metastatic calcinosis had to be removed with several surgeries. The patient had also a history of recurrent fever associated with pain localized toward the two masses and underwent multiple antibiotic courses. Laboratory findings at admission confirmed nephrotic syndrome. S-creatinine was 2.8 mg/dl. Calcium was 8.4 mg/dl, Phosphorus 8.2 mg/dl, PTH 80 pg/ml, 25 (OH)VitD 8 ng/ml. Serum amyloid A was slightly increased. We performed renal biopsy and we found AA amyloid deposits involving the mesangium and the tubules. The bone marrow biopsy revealed the presence of AA amyloid in the vascular walls. During the next two months renal failure rapidly progressed and the patient started hemodialysis treatment. We performed genetic analysis that confirmed homozygous mutation of the FGF23 gene. After 14 months on hemodialysis, the patient's lesions are remarkably and significantly reduced in dimension. The current phosphate binder therapy is based on sevelamer and lanthanum carbonate. Serum amyloid A is persistently slightly increased as well as C reactive protein. Proteinuria is in the nephrotic range without nephrotic syndrome.
Collapse
|
17
|
Shridas P, Ji A, Trumbauer AC, Noffsinger VP, Leung SW, Dugan AJ, Thatcher SE, Cassis LA, de Beer FC, Webb NR, Tannock LR. Adipocyte-Derived Serum Amyloid A Promotes Angiotensin II-Induced Abdominal Aortic Aneurysms in Obese C57BL/6J Mice. Arterioscler Thromb Vasc Biol 2022; 42:632-643. [PMID: 35344382 PMCID: PMC9050948 DOI: 10.1161/atvbaha.121.317225] [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] [Indexed: 11/16/2022]
Abstract
BACKGROUND Obesity increases the risk for human abdominal aortic aneurysms (AAAs) and enhances Ang II (angiotensin II)-induced AAA formation in C57BL/6J mice. Obesity is also associated with increases in perivascular fat that expresses proinflammatory markers including SAA (serum amyloid A). We previously reported that deficiency of SAA significantly reduces Ang II-induced inflammation and AAA in hyperlipidemic apoE-deficient mice. In this study. we investigated whether adipose tissue-derived SAA plays a role in Ang II-induced AAA in obese C57BL/6J mice. METHODS The development of AAA was compared between male C57BL/6J mice (wild type), C57BL/6J mice lacking SAA1.1, SAA2.1, and SAA3 (TKO); and TKO mice harboring a doxycycline-inducible, adipocyte-specific SAA1.1 transgene (TKO-Tgfat; SAA expressed only in fat). All mice were fed an obesogenic diet and doxycycline to induce SAA transgene expression and infused with Ang II to induce AAA. RESULTS In response to Ang II infusion, SAA expression was significantly increased in perivascular fat of obese C57BL/6J mice. Maximal luminal diameters of the abdominal aorta were determined by ultrasound before and after Ang II infusion, which indicated a significant increase in aortic luminal diameters in wild type and TKO-TGfat mice but not in TKO mice. Adipocyte-specific SAA expression was associated with MMP (matrix metalloproteinase) activity and macrophage infiltration in abdominal aortas of Ang II-infused obese mice. CONCLUSIONS We demonstrate for the first time that SAA deficiency protects obese C57BL/6J mice from Ang II-induced AAA. SAA expression only in adipocytes is sufficient to cause AAA in obese mice infused with Ang II.
Collapse
Affiliation(s)
- Preetha Shridas
- Departments of Internal Medicine (P.S., A.J., V.P.N., S.W.L., F.C.d.B., L.R.T.), University of Kentucky, Lexington
- Saha Cardiovascular Research Center (P.S., A.C.T., S.W.L., F.C.d.B., N.R.W., L.R.T.), University of Kentucky, Lexington
- Barnstable Brown Diabetes Center (P.S., F.C.d.B., N.R.W., L.R.T.), University of Kentucky, Lexington
| | - Ailing Ji
- Departments of Internal Medicine (P.S., A.J., V.P.N., S.W.L., F.C.d.B., L.R.T.), University of Kentucky, Lexington
| | - Andrea C Trumbauer
- Saha Cardiovascular Research Center (P.S., A.C.T., S.W.L., F.C.d.B., N.R.W., L.R.T.), University of Kentucky, Lexington
| | - Victoria P Noffsinger
- Departments of Internal Medicine (P.S., A.J., V.P.N., S.W.L., F.C.d.B., L.R.T.), University of Kentucky, Lexington
| | - Steve W Leung
- Departments of Internal Medicine (P.S., A.J., V.P.N., S.W.L., F.C.d.B., L.R.T.), University of Kentucky, Lexington
- Saha Cardiovascular Research Center (P.S., A.C.T., S.W.L., F.C.d.B., N.R.W., L.R.T.), University of Kentucky, Lexington
| | - Adam J Dugan
- Biostatistics (A.J.D.), University of Kentucky, Lexington
| | - Sean E Thatcher
- Department of Pharmacology, Temple University, Philadelphia, PA (S.E.T.)
| | - Lisa A Cassis
- Pharmacology and Nutritional Sciences (L.A.C., N.R.W.), University of Kentucky, Lexington
| | - Frederick C de Beer
- Departments of Internal Medicine (P.S., A.J., V.P.N., S.W.L., F.C.d.B., L.R.T.), University of Kentucky, Lexington
- Saha Cardiovascular Research Center (P.S., A.C.T., S.W.L., F.C.d.B., N.R.W., L.R.T.), University of Kentucky, Lexington
- Barnstable Brown Diabetes Center (P.S., F.C.d.B., N.R.W., L.R.T.), University of Kentucky, Lexington
| | - Nancy R Webb
- Pharmacology and Nutritional Sciences (L.A.C., N.R.W.), University of Kentucky, Lexington
- Saha Cardiovascular Research Center (P.S., A.C.T., S.W.L., F.C.d.B., N.R.W., L.R.T.), University of Kentucky, Lexington
- Barnstable Brown Diabetes Center (P.S., F.C.d.B., N.R.W., L.R.T.), University of Kentucky, Lexington
| | - Lisa R Tannock
- Departments of Internal Medicine (P.S., A.J., V.P.N., S.W.L., F.C.d.B., L.R.T.), University of Kentucky, Lexington
- Saha Cardiovascular Research Center (P.S., A.C.T., S.W.L., F.C.d.B., N.R.W., L.R.T.), University of Kentucky, Lexington
- Barnstable Brown Diabetes Center (P.S., F.C.d.B., N.R.W., L.R.T.), University of Kentucky, Lexington
- Department of Veterans Affairs, Lexington, KY (L.R.T.)
| |
Collapse
|
18
|
Smoldovskaya OV, Voloshin SA, Novikov AA, Aleksandrova EN, Feyzkhanova GU, Rubina AY. [Adaptation of Microarray Assay for Serum Amyloid A Analysis in Human Serum]. Mol Biol (Mosk) 2022; 56:336-342. [PMID: 35403627 DOI: 10.31857/s0026898422020173] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 09/08/2021] [Indexed: 06/14/2023]
Abstract
Serum amyloid A is an inflammatory biomarker whose concentration changes during infectious and inflammatory diseases. SAA's tendency for aggregation and complex formation makes it difficult to determine its concentration in samples, especially when there is an increased level of it. Immunofluorescence SAA determination on a microarray was adapted for SAA quantification in human serum. Both the procedure and the diluent for the calibrator samples were chosen to obtain a dynamic range between 1 and 100 μg/mL. Mixtures of animal (rabbit, goat, mouse) sera with recombinant antigen diluted in certain concentrations were used for the calibrator samples. The method was tested using serum samples from 15 patients with rheumatoid arthritis or ankylosing spondylitis and 9 healthy donors. The results obtained on the microarray demonstrated a good correlation with the results determined by ELISA (Pearson's correlation coefficient is 0.93). The method developed could be a convenient tool for assessing SAA levels in a number of diseases, such as rheumatoid arthritis or infections of various etiologies, characterized by a significant increase in the level of this protein in the blood. The use of a microarray for the analysis allows the determination of the SAA concentration simultaneously with other inflammatory biomarkers.
Collapse
Affiliation(s)
- O V Smoldovskaya
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991 Russia
| | - S A Voloshin
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991 Russia
| | - A A Novikov
- Loginov Moscow Clinical Scientific Center, Moscow, 111123 Russia
| | - E N Aleksandrova
- Loginov Moscow Clinical Scientific Center, Moscow, 111123 Russia
| | - G U Feyzkhanova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991 Russia
| | - A Yu Rubina
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991 Russia
| |
Collapse
|
19
|
Jiang J, Zhan X, Liang T, Chen L, Huang S, Sun X, Jiang W, Chen J, Chen T, Li H, Yao Y, Wu S, Zhu J, Liu C. Dysregulation of SAA1, TUBA8 and Monocytes Are Key Factors in Ankylosing Spondylitis With Femoral Head Necrosis. Front Immunol 2022; 12:814278. [PMID: 35126370 PMCID: PMC8812255 DOI: 10.3389/fimmu.2021.814278] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Accepted: 12/31/2021] [Indexed: 12/21/2022] Open
Abstract
Introduction The mechanism of ankylosing spondylitis with femoral head necrosis is unknown, and our study aimed investigate the effects of genetic and immune cell dysregulation on ankylosing spondylitis. Materials and Methods The protein expression of all ligaments in ankylosing spondylitis with femoral head necrosis was obtained using label-free quantification protein park analysis of six pairs of specimens. The possible pathogenesis was explored using differential protein analysis, weighted gene co-expression network analysis, recording intersections with hypoxia-related genes, immune cell correlation analysis, and drug sensitivity analysis. Finally, routine blood test data from 502 AS and 162 healthy controls were collected to examine immune cell differential analysis. Results SAA1 and TUBA8 were significantly expressed differentially in these two groups and correlated quite strongly with macrophage M0 and resting mast cells (P < 0.05). Routine blood data showed that monocytes were significantly more expressed in AS than in healthy controls (P < 0.05). SAA1 and TUBA8 were closely related to the sensitivity of various drugs, which might lead to altered drug sensitivity. Conclusion Dysregulation of SAA1, TUBA8 and monocytes are key factors in ankylosing spondylitis with femoral head necrosis.
Collapse
|
20
|
Saliu TP, Yazawa N, Hashimoto K, Miyata K, Kudo A, Horii M, Kamesawa M, Kumrungsee T, Yanaka N. Serum Amyloid A3 Promoter-Driven Luciferase Activity Enables Visualization of Diabetic Kidney Disease. Int J Mol Sci 2022; 23:ijms23020899. [PMID: 35055081 PMCID: PMC8779903 DOI: 10.3390/ijms23020899] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Revised: 01/12/2022] [Accepted: 01/13/2022] [Indexed: 12/10/2022] Open
Abstract
The early detection of diabetic nephropathy (DN) in mice is necessary for the development of drugs and functional foods. The purpose of this study was to identify genes that are significantly upregulated in the early stage of DN progression and develop a novel model to non-invasively monitor disease progression within living animals using in vivo imaging technology. Streptozotocin (STZ) treatment has been widely used as a DN model; however, it also exhibits direct cytotoxicity to the kidneys. As it is important to distinguish between DN-related and STZ-induced nephropathy, in this study, we compared renal responses induced by the diabetic milieu with two types of STZ models: multiple low-dose STZ injections with a high-fat diet and two moderate-dose STZ injections to induce DN. We found 221 genes whose expression was significantly altered during DN development in both models and identified serum amyloid A3 (Saa3) as a candidate gene. Next, we applied the Saa3 promoter-driven luciferase reporter (Saa3-promoter luc mice) to these two STZ models and performed in vivo bioluminescent imaging to monitor the progression of renal pathology. In this study, to further exclude the possibility that the in vivo bioluminescence signal is related to renal cytotoxicity by STZ treatment, we injected insulin into Saa3-promoter luc mice and showed that insulin treatment could downregulate renal inflammatory responses with a decreased signal intensity of in vivo bioluminescence imaging. These results strongly suggest that Saa3 promoter activity is a potent non-invasive indicator that can be used to monitor DN progression and explore therapeutic agents and functional foods.
Collapse
|
21
|
Zhu Q, Yao Y, Xu L, Wu H, Wang W, He Y, Wang Y, Lu Y, Qi J, Ding Y, Li X, Huang J, Zhao H, Du Y, Sun K, Sun Y. Elevated SAA1 promotes the development of insulin resistance in ovarian granulosa cells in polycystic ovary syndrome. Reprod Biol Endocrinol 2022; 20:4. [PMID: 34980155 PMCID: PMC8721971 DOI: 10.1186/s12958-021-00873-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 12/06/2021] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Insulin resistance (IR) contributes to ovarian dysfunctions in polycystic ovarian syndrome (PCOS) patients. Serum amyloid A1 (SAA1) is an acute phase protein produced primarily by the liver in response to inflammation. In addition to its role in inflammation, SAA1 may participate in IR development in peripheral tissues. Yet, expressional regulation of SAA1 in the ovary and its role in the pathogenesis of ovarian IR in PCOS remain elusive. METHODS Follicular fluid, granulosa cells and peripheral venous blood were collected from PCOS and non-PCOS patients with and without IR to measure SAA1 abundance for analysis of its correlation with IR status. The effects of SAA1 on its own expression and insulin signaling pathway were investigated in cultured primary granulosa cells. RESULTS Ovarian granulosa cells were capable of producing SAA1, which could be induced by SAA1 per se. Moreover, the abundance of SAA1 significantly increased in granulosa cells and follicular fluid in PCOS patients with IR. SAA1 treatment significantly attenuated insulin-stimulated membrane translocation of glucose transporter 4 and glucose uptake in granulosa cells through induction of phosphatase and tensin homolog deleted on chromosome 10 (PTEN) expression with subsequent inhibition of Akt phosphorylation. These effects of SAA1 could be blocked by inhibitors for toll-like receptors 2/4 (TLR 2/4) and nuclear factor kappa light chain enhancer of activated B (NF-κB). CONCLUSIONS Human granulosa cells are capable of feedforward production of SAA1, which significantly increased in PCOS patients with IR. Excessive SAA1 reduces insulin sensitivity in granulosa cells via induction of PTEN and subsequent inhibition of Akt phosphorylation upon activation of TLR2/4 and NF-κB pathway. These findings highlight that elevation of SAA1 in the ovary promotes the development of IR in granulosa cells of PCOS patients.
Collapse
Affiliation(s)
- Qinling Zhu
- Center for Reproductive Medicine, Ren ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200135, People's Republic of China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, 200135, People's Republic of China
| | - Yue Yao
- Center for Reproductive Medicine, Ren ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200135, People's Republic of China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, 200135, People's Republic of China
| | - Lizhen Xu
- Center for Reproductive Medicine, Ren ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200135, People's Republic of China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, 200135, People's Republic of China
| | - Hasiximuke Wu
- Center for Reproductive Medicine, Ren ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200135, People's Republic of China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, 200135, People's Republic of China
| | - Wangsheng Wang
- Center for Reproductive Medicine, Ren ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200135, People's Republic of China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, 200135, People's Republic of China
| | - Yaqiong He
- Center for Reproductive Medicine, Ren ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200135, People's Republic of China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, 200135, People's Republic of China
| | - Yuan Wang
- Center for Reproductive Medicine, Ren ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200135, People's Republic of China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, 200135, People's Republic of China
| | - Yao Lu
- Center for Reproductive Medicine, Ren ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200135, People's Republic of China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, 200135, People's Republic of China
| | - Jia Qi
- Center for Reproductive Medicine, Ren ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200135, People's Republic of China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, 200135, People's Republic of China
| | - Ying Ding
- Center for Reproductive Medicine, Ren ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200135, People's Republic of China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, 200135, People's Republic of China
| | - Xinyu Li
- Center for Reproductive Medicine, Ren ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200135, People's Republic of China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, 200135, People's Republic of China
| | - Jiaan Huang
- Center for Reproductive Medicine, Ren ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200135, People's Republic of China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, 200135, People's Republic of China
| | - Hanting Zhao
- Center for Reproductive Medicine, Ren ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200135, People's Republic of China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, 200135, People's Republic of China
| | - Yanzhi Du
- Center for Reproductive Medicine, Ren ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200135, People's Republic of China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, 200135, People's Republic of China
| | - Kang Sun
- Center for Reproductive Medicine, Ren ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200135, People's Republic of China.
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, 200135, People's Republic of China.
| | - Yun Sun
- Center for Reproductive Medicine, Ren ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200135, People's Republic of China.
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, 200135, People's Republic of China.
| |
Collapse
|
22
|
Lu H, Guo R, Zhang Y, Su S, Zhao Q, Yu Y, Shi H, Sun H, Zhang Y, Li S, Shi D, Chu X, Sun C. Inhibition of lncRNA TCONS_00077866 Ameliorates the High Stearic Acid Diet-Induced Mouse Pancreatic β-Cell Inflammatory Response by Increasing miR-297b-5p to Downregulate SAA3 Expression. Diabetes 2021; 70:2275-2288. [PMID: 34261739 DOI: 10.2337/db20-1079] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 07/06/2021] [Indexed: 11/13/2022]
Abstract
Long-term consumption of a high-fat diet increases the circulating concentration of stearic acid (SA), which has a potent toxic effect on β-cells, but the underlying molecular mechanisms of this action have not been fully elucidated. Here, we evaluated the role of long noncoding (lnc)RNA TCONS_00077866 (lnc866) in SA-induced β-cell inflammation. lnc866 was selected for study because lncRNA high-throughput sequencing analysis demonstrated it to have the largest fold-difference in expression of five lncRNAs that were affected by SA treatment. Knockdown of lnc866 by virus-mediated shRNA expression in mice or by Smart Silencer in mouse pancreatic β-TC6 cells significantly inhibited the SA-induced reduction in insulin secretion and β-cell inflammation. According to lncRNA-miRNAs-mRNA coexpression network analysis and luciferase reporter assays, lnc866 directly bound to miR-297b-5p, thereby preventing it from reducing the expression of its target serum amyloid A3 (SAA3). Furthermore, overexpression of miR-297b-5p or inhibition of SAA3 also had marked protective effects against the deleterious effects of SA in β-TC6 cells and mouse islets. In conclusion, lnc866 silencing ameliorates SA-induced β-cell inflammation by targeting the miR-297b-5p/SAA3 axis. lnc866 inhibition may represent a new strategy to protect β-cells against the effects of SA during the development of type 2 diabetes.
Collapse
MESH Headings
- Animals
- Cells, Cultured
- Diabetes Mellitus, Type 2/genetics
- Diabetes Mellitus, Type 2/metabolism
- Diabetes Mellitus, Type 2/pathology
- Diabetes Mellitus, Type 2/prevention & control
- Diet, High-Fat/adverse effects
- Down-Regulation/drug effects
- Gene Expression Regulation/drug effects
- HEK293 Cells
- Humans
- Inflammation/etiology
- Inflammation/genetics
- Inflammation/pathology
- Inflammation/prevention & control
- Insulin Secretion/drug effects
- Insulin-Secreting Cells/drug effects
- Insulin-Secreting Cells/metabolism
- Insulin-Secreting Cells/pathology
- Male
- Mice
- Mice, Inbred C57BL
- MicroRNAs/genetics
- Palmitic Acid/adverse effects
- Palmitic Acid/pharmacology
- Pancreatitis/etiology
- Pancreatitis/genetics
- Pancreatitis/pathology
- Pancreatitis/prevention & control
- RNA, Long Noncoding/antagonists & inhibitors
- RNA, Long Noncoding/genetics
- RNA, Small Interfering/pharmacology
- Serum Amyloid A Protein/genetics
- Stearic Acids/adverse effects
- Stearic Acids/pharmacology
Collapse
Affiliation(s)
- Huimin Lu
- Department of Nutrition and Food Hygiene (National Key Discipline), Public Health College, Harbin Medical University, Harbin, China
| | - Rui Guo
- Department of Nutrition and Food Hygiene (National Key Discipline), Public Health College, Harbin Medical University, Harbin, China
| | - Yunjin Zhang
- Department of Nutrition and Food Hygiene (National Key Discipline), Public Health College, Harbin Medical University, Harbin, China
| | - Shenghan Su
- Department of Nutrition and Food Hygiene (National Key Discipline), Public Health College, Harbin Medical University, Harbin, China
| | - Qingrui Zhao
- Department of Nutrition and Food Hygiene (National Key Discipline), Public Health College, Harbin Medical University, Harbin, China
| | - Yue Yu
- Department of Nutrition and Food Hygiene (National Key Discipline), Public Health College, Harbin Medical University, Harbin, China
| | - Hongbo Shi
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China
| | - Haoran Sun
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China
| | - Yongjian Zhang
- Department of Hepatobiliary and Pancreatic Surgery, Tumor Hospital of Harbin Medical University, Harbin, China
| | - Shenglong Li
- Department of General Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Dan Shi
- Department of Nutrition and Food Hygiene (National Key Discipline), Public Health College, Harbin Medical University, Harbin, China
| | - Xia Chu
- Department of Nutrition and Food Hygiene (National Key Discipline), Public Health College, Harbin Medical University, Harbin, China
| | - Changhao Sun
- Department of Nutrition and Food Hygiene (National Key Discipline), Public Health College, Harbin Medical University, Harbin, China
| |
Collapse
|
23
|
Olivier DW, Pretorius E, Engelbrecht AM. Serum amyloid A1: Innocent bystander or active participant in cell migration in triple-negative breast cancer? Exp Cell Res 2021; 406:112759. [PMID: 34332984 DOI: 10.1016/j.yexcr.2021.112759] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 07/23/2021] [Accepted: 07/26/2021] [Indexed: 01/26/2023]
Abstract
The Serum Amyloid A (SAA) family of proteins is associated with various pathological conditions, including cancer. However, their role in cancer is incompletely understood. Here, we investigated the role of SAA1 in cell cycle regulation, apoptosis, survival signaling, metabolism, and metastasis in models of triple-negative breast cancer (TNBC), using RNAi. Our data show that in untransformed epithelial cells (MCF12A), the knockdown of SAA1 induces the expression of cell cycle regulators (MCM2, p53), the activation of DNA repair (PARP synthesis), and survival signaling (NFκB). In contrast, knockdown of SAA1 in the TNBC cell line (MDA-MB-231) induced the expression p16 and shifted cells in the cell cycle from the S to G2/M phase, without the activation of DNA repair. Moreover, in SAA1-deficient MDA-MB-231 and HCC70 cells, metabolism (NADH oxidation) continually increased while cell migration (% wound closure and the rate of wound closure) decreased. However, silencing of SAA1 altered epithelial and mesenchymal markers in MCF12A (E-cadherin, Laminin 1β, Vimentin) and MDA-MB-231 (α-Smooth muscle actin) cells, associated with the metastatic program of epithelial-mesenchymal transition. Nonetheless, our data provide evidence that SAA1 could potentially serve as a therapeutic target in TNBC.
Collapse
Affiliation(s)
- Daniel Wilhelm Olivier
- Department of Physiological Sciences, Stellenbosch University, Mike De Vries Building, Corner Merriman and Bosman Road, Stellenbosch, 7602, South Africa.
| | - Etheresia Pretorius
- Department of Physiological Sciences, Stellenbosch University, Mike De Vries Building, Corner Merriman and Bosman Road, Stellenbosch, 7602, South Africa.
| | - Anna-Mart Engelbrecht
- Department of Physiological Sciences, Stellenbosch University, Mike De Vries Building, Corner Merriman and Bosman Road, Stellenbosch, 7602, South Africa.
| |
Collapse
|
24
|
Davis TA, Conradie D, Shridas P, de Beer FC, Engelbrecht AM, de Villiers WJS. Serum Amyloid A Promotes Inflammation-Associated Damage and Tumorigenesis in a Mouse Model of Colitis-Associated Cancer. Cell Mol Gastroenterol Hepatol 2021; 12:1329-1341. [PMID: 34217896 PMCID: PMC8463861 DOI: 10.1016/j.jcmgh.2021.06.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 06/20/2021] [Accepted: 06/21/2021] [Indexed: 12/20/2022]
Abstract
BACKGROUND & AIMS Identifying new approaches to lessen inflammation, as well as the associated malignant consequences, remains crucial to improving the lives and prognosis of patients diagnosed with inflammatory bowel diseases. Although it previously has been suggested as a suitable biomarker for monitoring disease activity in patients diagnosed with Crohn's disease, the role of the acute-phase protein serum amyloid A (SAA) in inflammatory bowel disease remains unclear. In this study, we aimed to assess the role of SAA in colitis-associated cancer. METHODS We established a model of colitis-associated cancer in wild-type and SAA double-knockout (Saa1/2-/-) mice by following the azoxymethane/dextran sulfate sodium protocol. Disease activity was monitored throughout the study while colon and tumor tissues were harvested for subsequent use in cytokine analyses, Western blot, and immunohistochemistry +experiments. RESULTS We observed attenuated disease activity in mice deficient for Saa1/2 as evidenced by decreased weight loss, increased stool consistency, decreased rectal bleeding, and decreased colitis-associated tissue damage. Macrophage infiltration, including CD206+ M2-like macrophages, also was attenuated in SAA knockout mice, while levels of interleukin 4, interleukin 10, and tumor necrosis factor-ɑ were decreased in the distal colon. Mice deficient for SAA also showed a decreased tumor burden, and tumors were found to have increased apoptotic activity coupled with decreased expression for markers of proliferation. CONCLUSION Based on these findings, we conclude that SAA has an active role in inflammatory bowel disease and that it could serve as a therapeutic target aimed at decreasing chronic inflammation and the associated risk of developing colitis-associated cancer.
Collapse
Affiliation(s)
| | | | - Preetha Shridas
- Department of Internal Medicine, University of Kentucky, Lexington, Kentucky
| | - Frederick C de Beer
- Department of Internal Medicine, University of Kentucky, Lexington, Kentucky
| | - Anna-Mart Engelbrecht
- Department of Physiological Sciences; African Cancer Institute, Department of Global Health
| | - Willem J S de Villiers
- African Cancer Institute, Department of Global Health; Department of Internal Medicine, Stellenbosch University, Stellenbosch, South Africa.
| |
Collapse
|
25
|
Abdullahi A, Stanojcic M, Yu N, Samadi O, Sadri A, Vinaik R, Coburn N, Jeschke MG. Serum amlyoid A: An inflammatory adipokine mediating postburn outcomes. Clin Transl Med 2021; 11:e412. [PMID: 34185405 PMCID: PMC8181199 DOI: 10.1002/ctm2.412] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 04/14/2021] [Accepted: 04/21/2021] [Indexed: 01/09/2023] Open
Affiliation(s)
- Abdikarim Abdullahi
- Faculty of MedicineUniversity of TorontoTorontoOntarioCanada
- Biological SciencesSunnybrook Research InstituteTorontoOntarioCanada
| | - Mile Stanojcic
- Biological SciencesSunnybrook Research InstituteTorontoOntarioCanada
| | - Nancy Yu
- Biological SciencesSunnybrook Research InstituteTorontoOntarioCanada
| | - Osai Samadi
- Biological SciencesSunnybrook Research InstituteTorontoOntarioCanada
| | - Ali‐reza Sadri
- Biological SciencesSunnybrook Research InstituteTorontoOntarioCanada
| | - Roohi Vinaik
- Faculty of MedicineUniversity of TorontoTorontoOntarioCanada
- Biological SciencesSunnybrook Research InstituteTorontoOntarioCanada
| | - Natalie Coburn
- Faculty of MedicineUniversity of TorontoTorontoOntarioCanada
- Odette Cancer Center Sunnybrook HospitalTorontoOntarioCanada
| | - Marc G. Jeschke
- Faculty of MedicineUniversity of TorontoTorontoOntarioCanada
- Biological SciencesSunnybrook Research InstituteTorontoOntarioCanada
- Ross Tilley Burn CentreSunnybrook HospitalTorontoOntarioCanada
- Department of SurgeryDivision of Plastic SurgeryUniversity of TorontoTorontoOntarioCanada
- Department of ImmunologyUniversity of TorontoTorontoOntarioCanada
| |
Collapse
|
26
|
Abouelasrar Salama S, Gouwy M, Van Damme J, Struyf S. The turning away of serum amyloid A biological activities and receptor usage. Immunology 2021; 163:115-127. [PMID: 33315264 PMCID: PMC8114209 DOI: 10.1111/imm.13295] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 11/24/2020] [Accepted: 12/04/2020] [Indexed: 12/21/2022] Open
Abstract
Serum amyloid A (SAA) is an acute-phase protein (APP) to which multiple immunological functions have been attributed. Regardless, the true biological role of SAA remains poorly understood. SAA is remarkably conserved in mammalian evolution, thereby suggesting an important biological function. Since its discovery in the 1970s, the majority of researchers have investigated SAA using recombinant forms made available through bacterial expression. Nevertheless, recent studies indicate that these recombinant forms of SAA are unreliable. Indeed, commercial SAA variants have been shown to be contaminated with bacterial products including lipopolysaccharides and lipoproteins. As such, biological activities and receptor usage (TLR2, TLR4) revealed through the use of commercial SAA variants may not reflect the inherent nature of this APP. Within this review, we discuss the biological effects of SAA that have been demonstrated through more solid experimental approaches. SAA takes part in the innate immune response via the recruitment of leucocytes and executes, through pathogen recognition, antimicrobial activity. Knockout animal models implicate SAA in a range of functions, such as regulation of T-cell-mediated responses and monopoiesis. Moreover, through its structural motifs, not only does SAA function as an extracellular matrix protein, but it also binds extracellular matrix proteins. Finally, we here also provide an overview of definite SAA receptor-mediated functions and highlight those that are yet to be validated. The role of FPR2 in SAA-mediated leucocyte recruitment has been confirmed; nevertheless, SAA has been linked to a range of other receptors including CD36, SR-BI/II, RAGE and P2RX7.
Collapse
Affiliation(s)
- Sara Abouelasrar Salama
- Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, University of Leuven, Leuven, Belgium
| | - Mieke Gouwy
- Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, University of Leuven, Leuven, Belgium
| | - Jo Van Damme
- Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, University of Leuven, Leuven, Belgium
| | - Sofie Struyf
- Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, University of Leuven, Leuven, Belgium
| |
Collapse
|
27
|
Chait A, Wang S, Goodspeed L, Gomes D, Turk KE, Wietecha T, Tang J, Storey C, O'Brien KD, Rubinow KB, Tang C, Vaisar T, Gharib SA, Lusis AJ, Den Hartigh LJ. Sexually Dimorphic Relationships Among Saa3 (Serum Amyloid A3), Inflammation, and Cholesterol Metabolism Modulate Atherosclerosis in Mice. Arterioscler Thromb Vasc Biol 2021; 41:e299-e313. [PMID: 33761762 PMCID: PMC8159856 DOI: 10.1161/atvbaha.121.316066] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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] [Indexed: 12/21/2022]
Abstract
[Figure: see text].
Collapse
Affiliation(s)
- Alan Chait
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition (A.C., S.W., L.G., D.G., K.E.T., J.T., C.S., K.B.R., C.T., T.V., L.J.D.H.), University of Washington, Seattle
- Diabetes Institute (A.C., S.W., L.G., D.G., K.E.T., T.W., J.T., C.S., K.D.O., K.B.R., C.T., T.V., L.J.D.H.), University of Washington, Seattle
| | - Shari Wang
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition (A.C., S.W., L.G., D.G., K.E.T., J.T., C.S., K.B.R., C.T., T.V., L.J.D.H.), University of Washington, Seattle
- Diabetes Institute (A.C., S.W., L.G., D.G., K.E.T., T.W., J.T., C.S., K.D.O., K.B.R., C.T., T.V., L.J.D.H.), University of Washington, Seattle
| | - Leela Goodspeed
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition (A.C., S.W., L.G., D.G., K.E.T., J.T., C.S., K.B.R., C.T., T.V., L.J.D.H.), University of Washington, Seattle
- Diabetes Institute (A.C., S.W., L.G., D.G., K.E.T., T.W., J.T., C.S., K.D.O., K.B.R., C.T., T.V., L.J.D.H.), University of Washington, Seattle
| | - Diego Gomes
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition (A.C., S.W., L.G., D.G., K.E.T., J.T., C.S., K.B.R., C.T., T.V., L.J.D.H.), University of Washington, Seattle
- Diabetes Institute (A.C., S.W., L.G., D.G., K.E.T., T.W., J.T., C.S., K.D.O., K.B.R., C.T., T.V., L.J.D.H.), University of Washington, Seattle
| | - Katherine E Turk
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition (A.C., S.W., L.G., D.G., K.E.T., J.T., C.S., K.B.R., C.T., T.V., L.J.D.H.), University of Washington, Seattle
- Diabetes Institute (A.C., S.W., L.G., D.G., K.E.T., T.W., J.T., C.S., K.D.O., K.B.R., C.T., T.V., L.J.D.H.), University of Washington, Seattle
| | - Tomasz Wietecha
- Diabetes Institute (A.C., S.W., L.G., D.G., K.E.T., T.W., J.T., C.S., K.D.O., K.B.R., C.T., T.V., L.J.D.H.), University of Washington, Seattle
- Department of Medicine, Division of Cardiology (T.W., K.D.O.), University of Washington, Seattle
| | - Jingjing Tang
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition (A.C., S.W., L.G., D.G., K.E.T., J.T., C.S., K.B.R., C.T., T.V., L.J.D.H.), University of Washington, Seattle
- Diabetes Institute (A.C., S.W., L.G., D.G., K.E.T., T.W., J.T., C.S., K.D.O., K.B.R., C.T., T.V., L.J.D.H.), University of Washington, Seattle
| | - Carl Storey
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition (A.C., S.W., L.G., D.G., K.E.T., J.T., C.S., K.B.R., C.T., T.V., L.J.D.H.), University of Washington, Seattle
- Diabetes Institute (A.C., S.W., L.G., D.G., K.E.T., T.W., J.T., C.S., K.D.O., K.B.R., C.T., T.V., L.J.D.H.), University of Washington, Seattle
| | - Kevin D O'Brien
- Diabetes Institute (A.C., S.W., L.G., D.G., K.E.T., T.W., J.T., C.S., K.D.O., K.B.R., C.T., T.V., L.J.D.H.), University of Washington, Seattle
- Department of Medicine, Division of Cardiology (T.W., K.D.O.), University of Washington, Seattle
| | - Katya B Rubinow
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition (A.C., S.W., L.G., D.G., K.E.T., J.T., C.S., K.B.R., C.T., T.V., L.J.D.H.), University of Washington, Seattle
- Diabetes Institute (A.C., S.W., L.G., D.G., K.E.T., T.W., J.T., C.S., K.D.O., K.B.R., C.T., T.V., L.J.D.H.), University of Washington, Seattle
| | - Chongren Tang
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition (A.C., S.W., L.G., D.G., K.E.T., J.T., C.S., K.B.R., C.T., T.V., L.J.D.H.), University of Washington, Seattle
- Diabetes Institute (A.C., S.W., L.G., D.G., K.E.T., T.W., J.T., C.S., K.D.O., K.B.R., C.T., T.V., L.J.D.H.), University of Washington, Seattle
| | - Tomas Vaisar
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition (A.C., S.W., L.G., D.G., K.E.T., J.T., C.S., K.B.R., C.T., T.V., L.J.D.H.), University of Washington, Seattle
- Diabetes Institute (A.C., S.W., L.G., D.G., K.E.T., T.W., J.T., C.S., K.D.O., K.B.R., C.T., T.V., L.J.D.H.), University of Washington, Seattle
| | - Sina A Gharib
- Division of Pulmonary, Critical Care and Sleep Medicine, Computational Medicine Core, Department of Medicine, Center for Lung Biology (S.A.G.), University of Washington, Seattle
| | - Aldons J Lusis
- Department of Human Genetics, University of California, Los Angeles (A.J.L.)
| | - Laura J Den Hartigh
- Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition (A.C., S.W., L.G., D.G., K.E.T., J.T., C.S., K.B.R., C.T., T.V., L.J.D.H.), University of Washington, Seattle
- Diabetes Institute (A.C., S.W., L.G., D.G., K.E.T., T.W., J.T., C.S., K.D.O., K.B.R., C.T., T.V., L.J.D.H.), University of Washington, Seattle
| |
Collapse
|
28
|
Popeijus HE, Zwaan W, Tayyeb JZ, Plat J. Potential Contribution of Short Chain Fatty Acids to Hepatic Apolipoprotein A-I Production. Int J Mol Sci 2021; 22:ijms22115986. [PMID: 34206021 PMCID: PMC8199098 DOI: 10.3390/ijms22115986] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 05/27/2021] [Accepted: 05/28/2021] [Indexed: 12/23/2022] Open
Abstract
Apolipoprotein A-I (ApoA-I) is the major protein of high density lipoprotein (HDL) particles and has a crucial role in reverse cholesterol transport (RCT). It has been postulated that elevating production of de novo ApoA-I might translate into the formation of new functional HDL particles that could lower cardiovascular disease (CVD) risk via RCT. During inflammation, serum ApoA-I concentrations are reduced, which contributes to the development of dysfunctional HDL particles as Serum Amyloid A (SAA) overtakes the position of ApoA-I within the HDL particles. Therefore, instead of elevating serum HDL cholesterol concentrations, rescuing lower serum ApoA-I concentrations could be beneficial in both normal and inflamed conditions. Several nutritional compounds, amongst others short chain fatty acids (SCFAs), have shown their capacity to modulate hepatic lipoprotein metabolism. In this review we provide an overview of HDL and more specific ApoA-I metabolism, SCFAs physiology and the current knowledge regarding the influence of SCFAs on ApoA-I expression and synthesis in human liver cells. We conclude that the current evidence regarding the effect of SCFAs on ApoA-I transcription and secretion is promising, however there is a need to investigate which dietary fibres could lead to increased SCFAs formation and consequent elevated ApoA-I concentrations.
Collapse
Affiliation(s)
- Herman E. Popeijus
- Department of Nutrition and Movement Sciences, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University, 6229 ET Maastricht, The Netherlands; (W.Z.); (J.Z.T.); (J.P.)
- Correspondence: ; Tel.: +31-620991115
| | - Willem Zwaan
- Department of Nutrition and Movement Sciences, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University, 6229 ET Maastricht, The Netherlands; (W.Z.); (J.Z.T.); (J.P.)
| | - Jehad Z. Tayyeb
- Department of Nutrition and Movement Sciences, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University, 6229 ET Maastricht, The Netherlands; (W.Z.); (J.Z.T.); (J.P.)
- Department of Clinical Biochemistry, Faculty of Medicine, University of Jeddah, Jeddah 23218, Saudi Arabia
| | - Jogchum Plat
- Department of Nutrition and Movement Sciences, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University, 6229 ET Maastricht, The Netherlands; (W.Z.); (J.Z.T.); (J.P.)
| |
Collapse
|
29
|
Li D, Xie P, Zhao S, Zhao J, Yao Y, Zhao Y, Ren G, Liu X. Hepatocytes derived increased SAA1 promotes intrahepatic platelet aggregation and aggravates liver inflammation in NAFLD. Biochem Biophys Res Commun 2021; 555:54-60. [PMID: 33813276 DOI: 10.1016/j.bbrc.2021.02.124] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 02/24/2021] [Indexed: 12/18/2022]
Abstract
Non-alcoholic fatty liver disease (NAFLD) is the pathological manifestation of metabolic syndrome in liver. Its pathological changes may evolve from the initial simple steatosis to non-alcoholic steatohepatitis, liver fibrosis and even liver cancer. Numerous studies have proved that platelets play a vital role in liver disease and homeostasis. Particularly, anti-platelet therapy can reduce intrahepatic platelet aggregation and improve the inflammation of fatty liver. Previous study has also confirmed that SAA is a gene closely related to high-fat diet (HFD) induced obesity, and SAA1 can promote liver insulin resistance induced by Palmitate or HFD. Here, we found that SAA1 treated platelets presented increased sensitivity of platelet aggregation, enhanced activation and increased adhesion ability, and such function was partly dependent on Toll-Like Receptor (TLR) 2 signaling. In addition, blocking SAA1 expression in vivo not only inhibited platelet aggregation in the liver tissues of NAFLD mice, but also alleviated the inflammation of fatty liver. In conclusion, our findings identify that HFD-induced hepatic overexpressed SAA1 aggravates fatty liver inflammation by promoting intrahepatic platelet aggregation, these results also imply that SAA1 may serve as a potential target for ameliorating NAFLD.
Collapse
Affiliation(s)
- Daoyuan Li
- Department of Pathology and Pathophysiology, School of Basic Medicine, Guizhou Medical University, Guiyang, Guizhou province, PR China; Department of Ophthalmology, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou province, PR China
| | - Ping Xie
- Department of Ophthalmology, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou province, PR China
| | - Su Zhao
- Department of Ophthalmology, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou province, PR China
| | - Jing Zhao
- Department of Ophthalmology, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou province, PR China
| | - Yucheng Yao
- Department of Ophthalmology, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou province, PR China
| | - Yan Zhao
- Department of Ophthalmology, Guizhou Provincial People's Hospital, Guiyang, Guizhou province, PR China
| | - Guangbing Ren
- Department of Ophthalmology, Panzhou People's Hospital, Panzhou, Guizhou province, PR China
| | - Xingde Liu
- Department of Pathology and Pathophysiology, School of Basic Medicine, Guizhou Medical University, Guiyang, Guizhou province, PR China; Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou province, PR China.
| |
Collapse
|
30
|
Liu R, Xu B, Zhang J, Sun H, Liu C, Lu F, Pan Q, Zhang X. Mycoplasma synoviae induces serum amyloid A upregulation and promotes chicken synovial fibroblast cell proliferation. Microb Pathog 2021; 154:104829. [PMID: 33727170 DOI: 10.1016/j.micpath.2021.104829] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 02/23/2021] [Accepted: 02/23/2021] [Indexed: 11/19/2022]
Abstract
Mycoplasma synoviae (MS) infection causes infectious synovitis and arthritis with hyperplasia of synovial cells in the chicken joint. However, its mechanism is unknown. We used primary chicken synovial fibroblast (CSF) as the research object to study the role of MS in the proliferation of MS-infected CSF and determine the mechanisms involved. Using integrated transcriptomic and proteomic analyses of the interaction between CSF and MS, we screened a proliferation-regulated factor, serum amyloid A (SAA), that may regulate proliferation of MS-infected CSF. SAA appears to be associated with MS-induced CSF proliferation. To study the role of SAA in MS-induced CSF proliferation, a eukaryotic expression vector overexpressing SAA and a small interfering RNA (siRNA) targeting Saa were constructed to manipulate the expression of SAA. Cell proliferation and apoptosis were detected via cell counting kit-8 (CCK-8), 5-Ethynyl-2'-deoxyuridine (EdU), or terminal deoxyribonucleotidyl transferase-mediated dUTP nick-dnd labeling (TUNEL) assays, respectively. Western blot analysis was used to examine the protein expression level of SAA, cyclin E1, and cyclin-dependent kinase 2 (CDK2). In vitro, MS significantly promoted the proliferation of CSF and increased the production of SAA. Overexpression of SAA accelerated the proliferative ability of CSF, whereas knockdown of SAA depressed the proliferative ability of CSF. A TUNEL assay indicated that MS did not induce apoptosis. Silencing of SAA suppressed the expression of cyclin E1 and CDK2. These results suggest that MS may upregulate the expression of SAA, accelerate the cell cycle, and promote proliferation of CSF.
Collapse
Affiliation(s)
- Rui Liu
- Key Laboratory of Veterinary Biological Engineering and Technology of Ministry of Agriculture, Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing, China; National Center for Engineering Research of Veterinary Bio-products, Jiangsu Academy of Agricultural Sciences, Nanjing, China; College of Veterinary Medicine, Qingdao Agriculture University, Qingdao, China
| | - Bin Xu
- Key Laboratory of Veterinary Biological Engineering and Technology of Ministry of Agriculture, Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing, China; National Center for Engineering Research of Veterinary Bio-products, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Jingfeng Zhang
- Key Laboratory of Veterinary Biological Engineering and Technology of Ministry of Agriculture, Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing, China; National Center for Engineering Research of Veterinary Bio-products, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Huawei Sun
- Key Laboratory of Veterinary Biological Engineering and Technology of Ministry of Agriculture, Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing, China; National Center for Engineering Research of Veterinary Bio-products, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Chuanmin Liu
- Key Laboratory of Veterinary Biological Engineering and Technology of Ministry of Agriculture, Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing, China; National Center for Engineering Research of Veterinary Bio-products, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Fengying Lu
- Key Laboratory of Veterinary Biological Engineering and Technology of Ministry of Agriculture, Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing, China; National Center for Engineering Research of Veterinary Bio-products, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Qunxing Pan
- Key Laboratory of Veterinary Biological Engineering and Technology of Ministry of Agriculture, Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing, China; National Center for Engineering Research of Veterinary Bio-products, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Xiaofei Zhang
- Key Laboratory of Veterinary Biological Engineering and Technology of Ministry of Agriculture, Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing, China; National Center for Engineering Research of Veterinary Bio-products, Jiangsu Academy of Agricultural Sciences, Nanjing, China.
| |
Collapse
|
31
|
Cohen G. Effect of High-Density Lipoprotein from Healthy Subjects and Chronic Kidney Disease Patients on the CD14 Expression on Polymorphonuclear Leukocytes. Int J Mol Sci 2021; 22:ijms22062830. [PMID: 33799511 PMCID: PMC7998954 DOI: 10.3390/ijms22062830] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 02/26/2021] [Accepted: 03/08/2021] [Indexed: 01/22/2023] Open
Abstract
In uremic patients, high-density lipoprotein (HDL) loses its anti-inflammatory features and can even become pro-inflammatory due to an altered protein composition. In chronic kidney disease (CKD), impaired functions of polymorphonuclear leukocytes (PMNLs) contribute to inflammation and an increased risk of cardiovascular disease. This study investigated the effect of HDL from CKD and hemodialysis (HD) patients on the CD14 expression on PMNLs. HDL was isolated using a one-step density gradient centrifugation. Isolation of PMNLs was carried out by discontinuous Ficoll-Hypaque density gradient centrifugation. CD14 surface expression was quantified by flow cytometry. The activity of the small GTPase Rac1 was determined by means of an activation pull-down assay. HDL increased the CD14 surface expression on PMNLs. This effect was more pronounced for HDL isolated from uremic patients. The acute phase protein serum amyloid A (SAA) caused higher CD14 expression, while SAA as part of an HDL particle did not. Lipid raft disruption with methyl-β-cyclodextrin led to a reduced CD14 expression in the absence and presence of HDL. HDL from healthy subjects but not from HD patients decreased the activity of Rac1. Considering the known anti-inflammatory effects of HDL, the finding that even HDL from healthy subjects increased the CD14 expression was unexpected. The pathophysiological relevance of this result needs further investigation.
Collapse
Affiliation(s)
- Gerald Cohen
- Department of Nephrology and Dialysis, Medical University of Vienna, A-1090 Vienna, Austria
| |
Collapse
|
32
|
Abstract
Amyloid fibrils are characterized by a linear morphology and a cross-β structure. Polymorphic and multiple fibril morphologies can be found when amyloid fibrils are extracted from amyloid-laden tissue. In this study, we report on the purification and transmission electron microscopic analysis of amyloid fibrils from 5 different animal species (mouse, cow, goat, dog, and camel) with AA amyloidosis. The results show that amyloid fibrils had a linear morphology with a cross-structure and irregular length in vivo. Although the fibrils from these different species showed highly similar conformations, there were significant differences in fibril width and crossover distance. We analyzed the sequences of homologous amyloid proteins and serum amyloid A, an evolutionarily conserved protein and a major amyloid precursor. We found 78.23% homology between the most distant amyloid proteins. The findings suggested similar fibril width and crossover distance in different animal species that displayed high homology of amyloid protein sequences. Dog and camel, as well as goat and cow, showed high genetic homology and similar fibril morphology. These data indicate that the fibrils from different animal species have similar genetic homology and morphology, which may provide a better understanding of the pathogenesis of amyloidosis.
Collapse
Affiliation(s)
- Xuguang Lin
- 13317Muroran Institute of Technology, Muroran, Japan
| | | | - Kenichi Watanabe
- 52746Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan
| | | |
Collapse
|
33
|
Lin X, Watanabe K, Kuragano M, Tokuraku K. Aggregation of Mouse Serum Amyloid A Protein Was Promoted by Amyloid-Enhancing Factors with the More Genetically Homologous Serum Amyloid A. Int J Mol Sci 2021; 22:ijms22031036. [PMID: 33494290 PMCID: PMC7864520 DOI: 10.3390/ijms22031036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 01/18/2021] [Accepted: 01/20/2021] [Indexed: 12/13/2022] Open
Abstract
Amyloid A (AA) amyloidosis is a condition in which amyloid fibrils characterized by a linear morphology and a cross-β structure accumulate and are deposited extracellularly in organs, resulting in chronic inflammatory diseases and infections. The incidence of AA amyloidosis is high in humans and several animal species. Serum amyloid A (SAA) is one of the most important precursor amyloid proteins and plays a vital step in AA amyloidosis. Amyloid enhancing factor (AEF) serves as a seed for fibril formation and shortens the onset of AA amyloidosis sharply. In this study, we examined whether AEFs extracted and purified from five animal species (camel, cat, cattle, goat, and mouse) could promote mouse SAA (mSAA) protein aggregation in vitro using quantum-dot (QD) nanoprobes to visualize the aggregation. The results showed that AEFs shortened and promoted mSAA aggregation. In addition, mouse and cat AEFs showed higher mSAA aggregation-promoting activity than the camel, cattle, and goat AEFs. Interestingly, homology analysis of SAA in these five animal species revealed a more similar amino acid sequence homology between mouse and cat than between other animal species. Furthermore, a detailed comparison of amino acid sequences suggested that it was important to mSAA aggregation-promoting activity that the 48th amino acid was a basic residue (Lys) and the 125th amino acid was an acidic residue (Asp or Glu). These data imply that AA amyloidosis exhibits higher transmission activity among animals carrying genetically homologous SAA gene, and may provide a new understanding of the pathogenesis of amyloidosis.
Collapse
Affiliation(s)
- Xuguang Lin
- Muroran Institute of Technology, Graduate School of Engineering, Muroran 050-8585, Japan; (X.L.); (M.K.)
| | - Kenichi Watanabe
- Research Center of Global Agromedicine, Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Obihiro 080-8555, Japan;
| | - Masahiro Kuragano
- Muroran Institute of Technology, Graduate School of Engineering, Muroran 050-8585, Japan; (X.L.); (M.K.)
| | - Kiyotaka Tokuraku
- Muroran Institute of Technology, Graduate School of Engineering, Muroran 050-8585, Japan; (X.L.); (M.K.)
- Correspondence: ; Tel.: +81-0143-46-5721
| |
Collapse
|
34
|
Smole U, Kratzer B, Pickl WF. Soluble pattern recognition molecules: Guardians and regulators of homeostasis at airway mucosal surfaces. Eur J Immunol 2020; 50:624-642. [PMID: 32246830 PMCID: PMC7216992 DOI: 10.1002/eji.201847811] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 02/25/2020] [Accepted: 03/31/2020] [Indexed: 01/08/2023]
Abstract
Maintenance of homeostasis at body barriers that are constantly challenged by microbes, toxins and potentially bioactive (macro)molecules requires complex, highly orchestrated mechanisms of protection. Recent discoveries in respiratory research have shed light on the unprecedented role of airway epithelial cells (AEC), which, besides immune cells homing to the lung, also significantly contribute to host defence by expressing membrane‐bound and soluble pattern recognition receptors (sPRR). Recent evidence suggests that distinct, evolutionary ancient, sPRR secreted by AEC might become activated by usually innocuous proteins, commonly referred to as allergens. We here provide a systematic overview on sPRR detectable in the mucus lining of AEC. Some of them become actively produced and secreted by AECs (like the pentraxins C‐reactive protein and pentraxin 3; the collectins mannose binding protein and surfactant proteins A and D; H‐ficolin; serum amyloid A; and the complement components C3 and C5). Others are elaborated by innate and adaptive immune cells such as monocytes/macrophages and T cells (like the pentraxins C‐reactive protein and pentraxin 3; L‐ficolin; serum amyloid A; and the complement components C3 and C5). Herein we discuss how sPRRs may contribute to homeostasis but sometimes also to overt disease (e.g. airway hyperreactivity and asthma) at the alveolar–air interface.
Collapse
Affiliation(s)
- Ursula Smole
- Institute of ImmunologyCenter for PathophysiologyInfectiology and ImmunologyMedical University of ViennaViennaAustria
| | - Bernhard Kratzer
- Institute of ImmunologyCenter for PathophysiologyInfectiology and ImmunologyMedical University of ViennaViennaAustria
| | - Winfried F. Pickl
- Institute of ImmunologyCenter for PathophysiologyInfectiology and ImmunologyMedical University of ViennaViennaAustria
| |
Collapse
|
35
|
Takehara M, Sato Y, Kimura T, Noda K, Miyamoto H, Fujino Y, Miyoshi J, Nakamura F, Wada H, Bando Y, Ikemoto T, Shimada M, Muguruma N, Takayama T. Cancer-associated adipocytes promote pancreatic cancer progression through SAA1 expression. Cancer Sci 2020; 111:2883-2894. [PMID: 32535957 PMCID: PMC7419047 DOI: 10.1111/cas.14527] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 05/02/2020] [Accepted: 06/04/2020] [Indexed: 12/16/2022] Open
Abstract
Although pancreatic cancer often invades peripancreatic adipose tissue, little information is known about cancer-adipocyte interaction. We first investigated the ability of adipocytes to de-differentiate to cancer-associated adipocytes (CAAs) by co-culturing with pancreatic cancer cells. We then examined the effects of CAA-conditioned medium (CAA-CM) on the malignant characteristics of cancer cells, the mechanism underlying those effects, and their clinical relevance in pancreatic cancer. When 3T3-L1 adipocytes were co-cultured with pancreatic cancer cells (PANC-1) using the Transwell system, adipocytes lost their lipid droplets and changed morphologically to fibroblast-like cells (CAA). Adipocyte-specific marker mRNA levels significantly decreased but those of fibroblast-specific markers appeared, characteristic findings of CAA, as revealed by real-time PCR. When PANC-1 cells were cultured with CAA-CM, significantly higher migration/invasion capability, chemoresistance, and epithelial-mesenchymal transition (EMT) properties were observed compared with control cells. To investigate the mechanism underlying these effects, we performed microarray analysis of PANC-1 cells cultured with CAA-CM and found a 78.5-fold higher expression of SAA1 compared with control cells. When the SAA1 gene in PANC-1 cells was knocked down with SAA1 siRNA, migration/invasion capability, chemoresistance, and EMT properties were significantly attenuated compared with control cells. Immunohistochemical analysis on human pancreatic cancer tissues revealed positive SAA1 expression in 46/61 (75.4%). Overall survival in the SAA1-positive group was significantly shorter than in the SAA1-negative group (P = .013). In conclusion, we demonstrated that pancreatic cancer cells induced de-differentiation in adipocytes toward CAA, and that CAA promoted malignant characteristics of pancreatic cancer via SAA1 expression, suggesting that SAA1 is a novel therapeutic target in pancreatic cancer.
Collapse
Affiliation(s)
- Masanori Takehara
- Department of Gastroenterology and OncologyInstitute of Biomedical SciencesTokushima University Graduate SchoolTokushima CityJapan
| | - Yasushi Sato
- Department of Gastroenterology and OncologyInstitute of Biomedical SciencesTokushima University Graduate SchoolTokushima CityJapan
| | - Tetsuo Kimura
- Department of Gastroenterology and OncologyInstitute of Biomedical SciencesTokushima University Graduate SchoolTokushima CityJapan
- Clinic Green HouseKochiJapan
| | - Kazuyoshi Noda
- Department of Gastroenterology and OncologyInstitute of Biomedical SciencesTokushima University Graduate SchoolTokushima CityJapan
| | - Hiroshi Miyamoto
- Department of Gastroenterology and OncologyInstitute of Biomedical SciencesTokushima University Graduate SchoolTokushima CityJapan
| | - Yasuteru Fujino
- Department of Gastroenterology and OncologyInstitute of Biomedical SciencesTokushima University Graduate SchoolTokushima CityJapan
| | - Jinsei Miyoshi
- Department of Gastroenterology and OncologyInstitute of Biomedical SciencesTokushima University Graduate SchoolTokushima CityJapan
| | - Fumika Nakamura
- Department of Gastroenterology and OncologyInstitute of Biomedical SciencesTokushima University Graduate SchoolTokushima CityJapan
| | - Hironori Wada
- Department of Gastroenterology and OncologyInstitute of Biomedical SciencesTokushima University Graduate SchoolTokushima CityJapan
| | - Yoshimi Bando
- Division of PathologyTokushima University HospitalTokushima CityJapan
| | - Tetsuya Ikemoto
- Department of SurgeryInstitute of Health BiosciencesTokushima University Graduate SchoolThe University of TokushimaTokushima CityJapan
| | - Mitsuo Shimada
- Department of SurgeryInstitute of Health BiosciencesTokushima University Graduate SchoolThe University of TokushimaTokushima CityJapan
| | - Naoki Muguruma
- Department of Gastroenterology and OncologyInstitute of Biomedical SciencesTokushima University Graduate SchoolTokushima CityJapan
| | - Tetsuji Takayama
- Department of Gastroenterology and OncologyInstitute of Biomedical SciencesTokushima University Graduate SchoolTokushima CityJapan
| |
Collapse
|
36
|
Lung HL, Lung ML, Law S. Serum amyloid A1 polymorphisms as risk factors in oesophageal squamous cell carcinoma. Hong Kong Med J 2019; 25 Suppl 7:4-8. [PMID: 31761762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023] Open
Affiliation(s)
- H L Lung
- Department of Biology, Hong Kong Baptist University
| | - M L Lung
- Department of Clinical Oncology and Centre for Cancer Research, The University of Hong Kong
| | - S Law
- Department of Surgery, The University of Hong Kong
| |
Collapse
|
37
|
Hari P, Millar FR, Tarrats N, Birch J, Quintanilla A, Rink CJ, Fernández-Duran I, Muir M, Finch AJ, Brunton VG, Passos JF, Morton JP, Boulter L, Acosta JC. The innate immune sensor Toll-like receptor 2 controls the senescence-associated secretory phenotype. Sci Adv 2019; 5:eaaw0254. [PMID: 31183403 PMCID: PMC6551188 DOI: 10.1126/sciadv.aaw0254] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Accepted: 04/26/2019] [Indexed: 05/22/2023]
Abstract
Cellular senescence is a stress response program characterized by a robust cell cycle arrest and the induction of a proinflammatory senescence-associated secretory phenotype (SASP) that is triggered through an unknown mechanism. Here, we show that, during oncogene-induced senescence (OIS), the Toll-like receptor 2 (TLR2) and its partner TLR10 are key mediators of senescence in vitro and in murine models. TLR2 promotes cell cycle arrest by regulating the tumor suppressors p53-p21CIP1, p16INK4a, and p15INK4b and regulates the SASP through the induction of the acute-phase serum amyloids A1 and A2 (A-SAAs) that, in turn, function as the damage-associated molecular patterns (DAMPs) signaling through TLR2 in OIS. Last, we found evidence that the cGAS-STING cytosolic DNA sensing pathway primes TLR2 and A-SAAs expression in OIS. In summary, we report that innate immune sensing of senescence-associated DAMPs by TLR2 controls the SASP and reinforces the cell cycle arrest program in OIS.
Collapse
Affiliation(s)
- Priya Hari
- Cancer Research UK Edinburgh Centre, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Fraser R. Millar
- Cancer Research UK Edinburgh Centre, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Nuria Tarrats
- Cancer Research UK Edinburgh Centre, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Jodie Birch
- Institute for Cell and Molecular Biosciences, Campus for Ageing and Vitality, Newcastle University Institute for Ageing, Newcastle University, Newcastle upon Tyne NE4 5PL, UK
| | - Andrea Quintanilla
- Cancer Research UK Edinburgh Centre, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Curtis J. Rink
- Cancer Research UK Beatson Institute, Glasgow G61 1BD, UK
- Institute of Cancer Sciences, University of Glasgow, Glasgow G61 1QH, UK
| | - Irene Fernández-Duran
- Cancer Research UK Edinburgh Centre, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Morwenna Muir
- Cancer Research UK Edinburgh Centre, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Andrew J. Finch
- Cancer Research UK Edinburgh Centre, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Valerie G. Brunton
- Cancer Research UK Edinburgh Centre, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - João F. Passos
- Institute for Cell and Molecular Biosciences, Campus for Ageing and Vitality, Newcastle University Institute for Ageing, Newcastle University, Newcastle upon Tyne NE4 5PL, UK
- Department of Physiology and Biochemical Engineering Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Jennifer P. Morton
- Cancer Research UK Beatson Institute, Glasgow G61 1BD, UK
- Institute of Cancer Sciences, University of Glasgow, Glasgow G61 1QH, UK
| | - Luke Boulter
- MRC-Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Juan Carlos Acosta
- Cancer Research UK Edinburgh Centre, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK
| |
Collapse
|
38
|
Jumeau C, Awad F, Assrawi E, Cobret L, Duquesnoy P, Giurgea I, Valeyre D, Grateau G, Amselem S, Bernaudin JF, Karabina SA. Expression of SAA1, SAA2 and SAA4 genes in human primary monocytes and monocyte-derived macrophages. PLoS One 2019; 14:e0217005. [PMID: 31100086 PMCID: PMC6524798 DOI: 10.1371/journal.pone.0217005] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Accepted: 05/02/2019] [Indexed: 12/28/2022] Open
Abstract
Circulating serum amyloid A (SAA) is increased in various inflammatory conditions. The human SAA protein family comprises the acute phase SAA1/SAA2, known to activate a large set of innate and adaptive immune cells, and the constitutive SAA4. The liver synthesis of SAA1/SAA2 is well-established but there is still an open debate on extrahepatic SAA expression especially in macrophages. We aimed to investigate the ability of human primary monocytes and monocyte-derived macrophages to express SAA1, SAA2 and SAA4 at both the transcriptional and protein levels, as previous studies almost exclusively dealt with monocytic cell lines. Monocytes and derived macrophages from healthy donors were stimulated under various conditions. In parallel with SAA, pro-inflammatory IL1A, IL1B and IL6 cytokine expression was assessed. While LPS alone was non-effective, a combined LPS/dexamethasone treatment induced SAA1 and to a lesser extent SAA2 transcription in human monocytes and macrophages. In contrast, as expected, pro-inflammatory cytokine expression was strongly induced following stimulation with LPS, an effect which was dampened in the presence of dexamethasone. Furthermore, in monocytes polarized towards a pro-inflammatory M1 phenotype, SAA expression in response to LPS/dexamethasone was potentiated; a result mainly seen for SAA1. However, a major discrepancy was observed between SAA mRNA and intracellular protein levels under the experimental conditions used. Our results demonstrate that human monocytes and macrophages can express SAA genes, mainly SAA1 in response to an inflammatory environment. While SAA is considered as a member of a large cytokine network, its expression in the monocytes-macrophages in response to LPS-dexamethasone is strikingly different from that observed for classic pro-inflammatory cytokines. As monocytes-macrophages are major players in chronic inflammatory diseases, it may be hypothesized that SAA production from macrophages may contribute to the local inflammatory microenvironment, especially when macrophages are compactly organized in granulomas as in sarcoidosis.
Collapse
Affiliation(s)
- Claire Jumeau
- Sorbonne Université, INSERM, UMR_S 933, Assistance Publique Hôpitaux de Paris, Hôpital Trousseau, Service de Génétique et d’Embryologie médicale, Paris, France
| | - Fawaz Awad
- Sorbonne Université, INSERM, UMR_S 933, Assistance Publique Hôpitaux de Paris, Hôpital Trousseau, Service de Génétique et d’Embryologie médicale, Paris, France
| | - Eman Assrawi
- Sorbonne Université, INSERM, UMR_S 933, Assistance Publique Hôpitaux de Paris, Hôpital Trousseau, Service de Génétique et d’Embryologie médicale, Paris, France
| | - Laetitia Cobret
- Sorbonne Université, INSERM, UMR_S 933, Assistance Publique Hôpitaux de Paris, Hôpital Trousseau, Service de Génétique et d’Embryologie médicale, Paris, France
| | - Philippe Duquesnoy
- Sorbonne Université, INSERM, UMR_S 933, Assistance Publique Hôpitaux de Paris, Hôpital Trousseau, Service de Génétique et d’Embryologie médicale, Paris, France
| | - Irina Giurgea
- Sorbonne Université, INSERM, UMR_S 933, Assistance Publique Hôpitaux de Paris, Hôpital Trousseau, Service de Génétique et d’Embryologie médicale, Paris, France
| | - Dominique Valeyre
- Assistance Publique Hôpitaux de Paris, Hôpital Avicenne, Service de Pneumologie, Bobigny, France
- Université Paris 13, INSERM UMR 1272, Laboratoire ‘Hypoxie & Poumon’, Bobigny, France
| | - Gilles Grateau
- Sorbonne Université, INSERM, UMR_S 933, Assistance Publique Hôpitaux de Paris, Hôpital Trousseau, Service de Génétique et d’Embryologie médicale, Paris, France
- Assistance Publique Hôpitaux de Paris, Hôpital Tenon, Service de médecine interne, Paris, France
| | - Serge Amselem
- Sorbonne Université, INSERM, UMR_S 933, Assistance Publique Hôpitaux de Paris, Hôpital Trousseau, Service de Génétique et d’Embryologie médicale, Paris, France
| | - Jean-François Bernaudin
- Sorbonne Université, INSERM, UMR_S 933, Assistance Publique Hôpitaux de Paris, Hôpital Trousseau, Service de Génétique et d’Embryologie médicale, Paris, France
- Assistance Publique Hôpitaux de Paris, Hôpital Avicenne, Service de Pneumologie, Bobigny, France
- Université Paris 13, INSERM UMR 1272, Laboratoire ‘Hypoxie & Poumon’, Bobigny, France
| | - Sonia-Athina Karabina
- Sorbonne Université, INSERM, UMR_S 933, Assistance Publique Hôpitaux de Paris, Hôpital Trousseau, Service de Génétique et d’Embryologie médicale, Paris, France
| |
Collapse
|
39
|
Lu Y, Wang WS, Lin YK, Lu JW, Li WJ, Zhang CY, Sun K. Enhancement of cortisol-induced SAA1 transcription by SAA1 in the human amnion. J Mol Endocrinol 2019; 62:149-158. [PMID: 30817315 DOI: 10.1530/jme-18-0263] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 02/22/2019] [Indexed: 12/15/2022]
Abstract
Our previous studies have demonstrated that human fetal membranes are capable of de novo synthesis of serum amyloid A1 (SAA1), an acute phase protein of inflammation, wherein SAA1 may participate in parturition by inducing a number of inflammation mediators including interleukine-1β, interleukine-6 and prostaglandin E2. However, the regulation of SAA1 expression in the fetal membranes remains largely unknown. In the current study, we examined the regulation of SAA1 expression by cortisol, a crucial steroid produced locally in the fetal membranes at parturition, and the interaction between cortisol and SAA1 in the feed-forward induction of SAA1 expression in human amnion fibroblasts. Results showed that cortisol-induced SAA1 expression in a concentration-dependent manner, which was greatly enhanced by SAA1 despite modest induction of SAA1 expression by itself. Mechanism studies revealed that the induction of SAA1 expression by cortisol and SAA1 was blocked by either the transcription factor STAT3 antagonist AZD0530 or siRNA-mediated knockdown of STAT3. Furthermore, cortisol- and SAA1-induced STAT3 phosphorylation in a sequential order with the induction by SAA1 preceding the induction by cortisol. However, combination of cortisol and SAA1 failed to further intensify the phosphorylation of STAT3. Consistently, cortisol and SAA1 increased the enrichment of STAT3 at the SAA1 promoter. Taking together, this study has demonstrated that cortisol and SAA1 can reinforce each other in the induction of SAA1 expression through sequential phosphorylation of STAT3. The enhancement of cortisol-induced SAA1 expression by SAA1 may lead to excessive SAA1 accumulation resulting in parturition-associated inflammation in the fetal membranes.
Collapse
Affiliation(s)
- Yi Lu
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People's Republic of China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, People's Republic of China
| | - Wang-Sheng Wang
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People's Republic of China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, People's Republic of China
| | - Yi-Kai Lin
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People's Republic of China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, People's Republic of China
| | - Jiang-Wen Lu
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People's Republic of China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, People's Republic of China
| | - Wen-Jiao Li
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People's Republic of China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, People's Republic of China
| | - Chu-Yue Zhang
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People's Republic of China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, People's Republic of China
| | - Kang Sun
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People's Republic of China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, People's Republic of China
| |
Collapse
|
40
|
Griffiths K, Maxwell AP, McCarter RV, Nicol P, Hogg RE, Harbinson M, McKay GJ. Serum amyloid A levels are associated with polymorphic variants in the serum amyloid A 1 and 2 genes. Ir J Med Sci 2019; 188:1175-1183. [PMID: 30852808 DOI: 10.1007/s11845-019-01996-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [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: 12/05/2018] [Accepted: 02/22/2019] [Indexed: 12/12/2022]
Abstract
BACKGROUND Serum amyloid A (SAA) is secreted by liver hepatocytes in response to increased inflammation whereupon it associates with high-density lipoprotein (HDL) and alters the protein and lipid composition of HDL negating some of its anti-atherogenic properties. AIMS To identify variants within the SAA gene that may be associated with SAA levels and/or cardiovascular disease (CVD). METHODS We identified exonic variants within the SAA genes by deoxyribonucleic acid (DNA) Sanger sequencing. We tested the association between SAA variants and serum SAA levels in 246 individuals with and without CVD. RESULTS Increased SAA was associated with rs2468844 (beta [β] = 1.73; confidence intervals [CI], 1.14-1.75; p = 0.01), rs1136747 (β = 1.53 (CI, 1.11-1.73); p = 0.01) and rs149926073 (β = 3.37 (CI, 1.70-4.00); p = 0.02), while rs1136745 was significantly associated with decreased SAA levels (β = 0.70 (CI, 0.53-0.94); p = 0.02). Homozygous individuals with the SAA1.3 haplotype had significantly lower levels of SAA compared with those with SAA1.1 or SAA1.5 (β = 0.43 (CI, 0.22-0.85); p = 0.02) while SAA1.3/1.5 heterozygotes had significantly higher SAA levels compared with those homozygous for SAA1.1 (β = 2.58 (CI, 1.19-5.57); p = 0.02). CONCLUSIONS We have identified novel genetic variants in the SAA genes associated with SAA levels, a biomarker of inflammation and chronic disease. The utility of SAA as a biomarker for inflammation and chronic disease may be influenced by underlying genetic variation in baseline levels.
Collapse
Affiliation(s)
- Kayleigh Griffiths
- Centre for Public Health, Queen's University Belfast, Belfast, Northern Ireland
| | - Alexander P Maxwell
- Centre for Public Health, Queen's University Belfast, Belfast, Northern Ireland
| | - Rachel V McCarter
- Centre for Public Health, Queen's University Belfast, Belfast, Northern Ireland
| | - Patrick Nicol
- Centre for Public Health, Queen's University Belfast, Belfast, Northern Ireland
| | - Ruth E Hogg
- Centre for Public Health, Queen's University Belfast, Belfast, Northern Ireland
| | - Mark Harbinson
- Centre for Medical Education, Queen's University Belfast, Belfast, Northern Ireland
- Department of Cardiology, Belfast Health and Social Care Trust, Royal Hospital, Belfast, Northern Ireland
| | - Gareth J McKay
- Centre for Public Health, Queen's University Belfast, Belfast, Northern Ireland.
- Centre for Public Health, Institute of Clinical Sciences, Block B, Royal Victoria Hospital, Queen's University Belfast, Belfast, BT12 6BA, Ireland.
| |
Collapse
|
41
|
Dieter BP, Meek RL, Anderberg RJ, Cooney SK, Bergin JL, Zhang H, Nair V, Kretzler M, Brosius FC, Tuttle KR. Serum amyloid A and Janus kinase 2 in a mouse model of diabetic kidney disease. PLoS One 2019; 14:e0211555. [PMID: 30763329 PMCID: PMC6375550 DOI: 10.1371/journal.pone.0211555] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 01/16/2019] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Serum amyloid A (SAA), a potent inflammatory mediator, and Janus kinase 2 (JAK2), an intracellular signaling kinase, are increased by diabetes. The aims were to elucidate: 1) a JAK2-mediated pathway for increased SAA in the kidneys of diabetic mice; 2) a JAK2-SAA pathway for inflammation in podocytes. METHODS Akita diabetic mice (129S6) with podocyte JAK2 overexpression and angiotensin II infusion (4 weeks) were given a JAK1,2 inhibitor (LY03103801, 3 mg/kg/day orally for the last two weeks). Kidneys were immunostained for SAA isoform 3 (SAA3). SAA3 knockout and control mouse podocytes were exposed to advanced glycation end products (AGE) or exogenous SAA with JAK2 inhibition (Tyrphostin AG 490, 50μM). JAK2 activity (phosphorylation, Western blot, 1 hour) and mRNA for SAA3 and associated inflammatory genes (Cxcl5, Ccl2, and Ccl5) were measured by RT-PCR (20 hours). RESULTS SAA3 protein was present throughout the diabetic kidney, and podocyte JAK2 overexpression increased tubulointerstitial SAA3 compared to wild type diabetic controls, 43% versus 14% (p = 0.007); JAK1,2 inhibition attenuated the increase in SAA3 to 15% (p = 0.003). Urine albumin-to-creatinine ratio (r = 0.49, p = 0.03), mesangial index (r = 0.64, p = 0.001), and glomerulosclerosis score (r = 0.51, p = 0.02) were associated with SAA3 immunostaining scores across mouse groups. Exposing podocytes to AGE or exogenous SAA increased JAK2 activity within one hour and mRNA for associated inflammatory genes after 20 hours. JAK2 inhibition reduced SAA3 mRNA expression in podocytes exposed to AGE or SAA. SAA3 knockout podocytes had >85% lower AGE-induced inflammatory genes. CONCLUSION JAK1,2 inhibition reduced SAA and histological features of DKD in podocyte JAK2-overexpressing mice. In podocytes exposed to a diabetes-like condition, JAK2 inhibition reduced expression of SAA, while SAA knockout blocked expression of associated pro-inflammatory mediators. SAA may promote JAK2-dependent inflammation in the diabetic kidney.
Collapse
Affiliation(s)
- Brad P. Dieter
- Providence Medical Research Center, Providence Health Care, Spokane, Washington, United States of America
| | - Rick L. Meek
- Providence Medical Research Center, Providence Health Care, Spokane, Washington, United States of America
| | - Robert J. Anderberg
- Providence Medical Research Center, Providence Health Care, Spokane, Washington, United States of America
| | - Sheryl K. Cooney
- Providence Medical Research Center, Providence Health Care, Spokane, Washington, United States of America
| | - Jen L. Bergin
- Providence Medical Research Center, Providence Health Care, Spokane, Washington, United States of America
| | - Hongyu Zhang
- Internal Medicine, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Viji Nair
- Internal Medicine, University of Michigan, Ann Arbor, Michigan, United States of America
- Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Matthias Kretzler
- Internal Medicine, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Frank C. Brosius
- Internal Medicine, University of Michigan, Ann Arbor, Michigan, United States of America
- Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Katherine R. Tuttle
- Providence Medical Research Center, Providence Health Care, Spokane, Washington, United States of America
- Institute of Translational Health Sciences, Kidney Research Institute, Nephrology Division University of Washington, Seattle, Washington, United States of America
| |
Collapse
|
42
|
Yashiro M, Furukawa H, Asano T, Sato S, Kobayashi H, Watanabe H, Suzuki E, Nakamura T, Koga T, Shimizu T, Umeda M, Nonaka F, Ueki Y, Eguchi K, Kawakami A, Migita K. Serum amyloid A1 (SAA1) gene polymorphisms in Japanese patients with adult-onset Still's disease. Medicine (Baltimore) 2018; 97:e13394. [PMID: 30544414 PMCID: PMC6310518 DOI: 10.1097/md.0000000000013394] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Adult-onset Still's disease (AOSD) is a rare systemic inflammatory disorder in which inflammasome activation plays a pathophysiological role. In view of the inflammatory nature of AOSD, we investigated whether serum amyloid A (SAA) gene polymorphisms affect the susceptibility of patients with AOSD.Eighty-seven Japanese patients with AOSD and 200 healthy Japanese subjects were recruited in this study. The genotypes of the -13C/T SNP in the 5'-flanking region of the SAA1 gene (rs12218) and two SNPs within exon 3 of SAA1 (2995C/T and 3010C/T polymorphisms) were determined using polymerase chain reaction fragment length polymorphism (PCR-RFLP) assay in all subjects. In AOSD patients, exons 1, 2, 3, and 10 of the MEFV gene were also genotyped by direct sequencing.The frequency of the SAA1.3 allele was increased in AOSD patients compared with that in healthy subjects (43.1% versus 37.5%), but the difference was not significant. The -13T allele was more frequently observed in AOSD patients than in healthy subjects (50.6% versus 41.0%, P = .0336). AOSD patients with the -13T allele had been treated with immunosuppressants more frequently than those without this allele. MEFV mutations were detected in 49 patients with AOSD (49/87, 57.3%). AOSD patients with MEFV variants frequently exhibit macrophage activation syndrome, but the difference was not significant (34.7% versus 18.4%, P = .081). Also, there was no significant difference in SAA1 -13C/T allele frequency between AOSD patients with and without MEFV mutations.Our data shows a significant association between T allele of rs12218 and AOSD in Japanese population.
Collapse
Affiliation(s)
- Makiko Yashiro
- Department of Rheumatology, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, Fukushima
| | - Hiroshi Furukawa
- Molecular and Genetic Epidemiology Laboratory, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba
| | - Tomoyuki Asano
- Department of Rheumatology, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, Fukushima
| | - Shuzo Sato
- Department of Rheumatology, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, Fukushima
| | - Hiroko Kobayashi
- Department of Rheumatology, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, Fukushima
| | - Hiroshi Watanabe
- Department of Rheumatology, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, Fukushima
| | - Eiji Suzuki
- Department of Rheumatology, Ohta Nishinouchi General Hospital Foundation, 2-5-20 Nishinouchi, Koriyama, Fukushima
| | - Tadashi Nakamura
- Department of Rheumatology, Sakurajyuji Hospital Miyukibe 1-1-1 Kumamoto
| | - Tomohiro Koga
- Department of Immunology and Rheumatology, Unit of Translational Medicine, Graduate School of Biomedical Sciences, Nagasaki University, Sakamoto1-7-1, Nagasaki
| | - Toshimasa Shimizu
- Department of Immunology and Rheumatology, Unit of Translational Medicine, Graduate School of Biomedical Sciences, Nagasaki University, Sakamoto1-7-1, Nagasaki
| | - Masataka Umeda
- Department of Immunology and Rheumatology, Unit of Translational Medicine, Graduate School of Biomedical Sciences, Nagasaki University, Sakamoto1-7-1, Nagasaki
| | - Fumiaki Nonaka
- Departments of Rheumatology, Sasebo City General Hospital, Hirase 9-3, Sasebo
| | - Yukitaka Ueki
- Department of Rheumatology, Sasebo Chuo Hospital, Yamato 15, Sasebo, Japan
| | - Katsumi Eguchi
- Department of Rheumatology, Sasebo Chuo Hospital, Yamato 15, Sasebo, Japan
| | - Atsushi Kawakami
- Department of Immunology and Rheumatology, Unit of Translational Medicine, Graduate School of Biomedical Sciences, Nagasaki University, Sakamoto1-7-1, Nagasaki
| | - Kiyoshi Migita
- Department of Rheumatology, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, Fukushima
| |
Collapse
|
43
|
Fujii R, Komatsu R, Sato T, Seki I, Konomi K, Aono H, Niki H, Yudoh K, Nishioka K, Nakajima T. SPACIA1/SAAL1 Deletion Results in a Moderate Delay in Collagen-Induced Arthritis Activity, along with mRNA Decay of Cyclin-dependent Kinase 6 Gene. Int J Mol Sci 2018; 19:ijms19123828. [PMID: 30513680 PMCID: PMC6320788 DOI: 10.3390/ijms19123828] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 11/27/2018] [Accepted: 11/29/2018] [Indexed: 11/18/2022] Open
Abstract
This study was performed to elucidate the molecular function of the synoviocyte proliferation-associated in collagen-induced arthritis (CIA) 1/serum amyloid A-like 1 (SPACIA1/SAAL1) in mice CIA, an animal model of rheumatoid arthritis (RA), and human RA-synovial fibroblasts (RASFs). SPACIA1/SAAL1-deficient mice were generated and used to create mouse models of CIA in mild or severe disease conditions. Cell cycle-related genes, whose expression levels were affected by SPACIA1/SAAL1 small interfering RNA (siRNA), were screened. Transcriptional and post-transcriptional effects of SPACIA1/SAAL1 siRNA on cyclin-dependent kinase (cdk) 6 gene expression were investigated in human RASFs. SPACIA1/SAAL1-deficient mice showed later onset and slower progression of CIA than wild-type mice in severe disease conditions, but not in mild conditions. Expression levels of cdk6, but not cdk4, which are D-type cyclin partners, were downregulated by SPACIA1/SAAL1 siRNA at the post-transcriptional level. The exacerbation of CIA depends on SPACIA1/SAAL1 expression, although CIA also progresses slowly in the absence of SPACIA1/SAAL1. The CDK6, expression of which is up-regulated by the SPACIA1/SAAL1 expression, might be a critical factor in the exacerbation of CIA.
Collapse
Affiliation(s)
- Ryoji Fujii
- Institute of Medical Science, St. Marianna University School of Medicine, Kanagawa 216-8512, Japan.
| | - Rie Komatsu
- Institute of Medical Science, St. Marianna University School of Medicine, Kanagawa 216-8512, Japan.
| | - Tomoo Sato
- Institute of Medical Science, St. Marianna University School of Medicine, Kanagawa 216-8512, Japan.
| | - Iwao Seki
- AYUMI Pharmaceutical Corporation, Kyoto 612-8374, Japan.
| | - Koji Konomi
- Santen Pharmaceutical Co., Ltd., Osaka 533-8651, Japan.
| | - Hiroyuki Aono
- AYUMI Pharmaceutical Corporation, Kyoto 612-8374, Japan.
| | - Hisateru Niki
- Department of Orthopedic Surgery, St. Marianna University School of Medicine, Kanagawa 216-8511, Japan.
| | - Kazuo Yudoh
- Institute of Medical Science, St. Marianna University School of Medicine, Kanagawa 216-8512, Japan.
| | - Kusuki Nishioka
- Global Health Innovation Policy Program (GHIPP), National Graduate Institute for Policy Studies (GRIPS), Tokyo 106-8677, Japan.
| | - Toshihiro Nakajima
- Institute of Medical Science, St. Marianna University School of Medicine, Kanagawa 216-8512, Japan.
- Institute of Medical Science, Tokyo Medical University, Tokyo 160-8402, Japan.
- Misato Marine Hospital, Kochi 781-0112, Japan.
| |
Collapse
|
44
|
Ather JL, Dienz O, Boyson JE, Anathy V, Amiel E, Poynter ME. Serum Amyloid A3 is required for normal lung development and survival following influenza infection. Sci Rep 2018; 8:16571. [PMID: 30410021 PMCID: PMC6224415 DOI: 10.1038/s41598-018-34901-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 10/24/2018] [Indexed: 02/06/2023] Open
Abstract
Serum amyloid A (SAA) proteins are a family of acute phase apolipoproteins implicated to directly modulate innate and adaptive immune responses. However, new studies comparing endogenous SAAs and recombinant forms of these proteins have questioned the function of SAA in inflammation and immunity. We generated SAA3 knockout mice to evaluate the contribution of SAA3 to lung development and immune-mediated lung disease. While SAA3 deficiency does not affect the generation of house dust mite-induced allergic asthma, mice lacking SAA3 develop adult-onset obesity, intrinsic airway hyperresponsiveness, increased inflammatory and fibrotic gene expression in the lung, and elevated levels of lung citrullinated proteins. Polyclonally stimulated CD4+ T cells from SAA3-/- mice exhibit impaired glycolytic activity, decreased TH2 and TH1 cytokine secretion, and elevated IL-17A production compared to wild type cells. Polyclonally stimulated CD8+ T cells from SAA3-/- mice also exhibit impaired glycolytic activity as well as a diminished capacity to produce IL-2 and IFNγ. Finally, SAA3-/- mice demonstrate increased mortality in response to H1N1 influenza infection, along with higher copy number of viral RNAs in the lung, a lack of CD8+ T cell IFNγ secretion, and decreased flu-specific antibodies. Our findings indicate that endogenous SAA3 regulates lung development and homeostasis, and is required for protection against H1N1 influenza infection.
Collapse
Affiliation(s)
- Jennifer L Ather
- Vermont Lung Center, Division of Pulmonary Disease and Critical Care, Department of Medicine, University of Vermont, Burlington, VT, 05405, USA
| | - Oliver Dienz
- Department of Surgery, University of Vermont, Burlington, VT, 05405, USA
| | - Jonathan E Boyson
- Department of Surgery, University of Vermont, Burlington, VT, 05405, USA
| | - Vikas Anathy
- Department of Pathology and Laboratory Medicine, University of Vermont, Burlington, VT, 05405, USA
| | - Eyal Amiel
- Department of Biomedical and Health Sciences, University of Vermont, Burlington, VT, 05405, USA
| | - Matthew E Poynter
- Vermont Lung Center, Division of Pulmonary Disease and Critical Care, Department of Medicine, University of Vermont, Burlington, VT, 05405, USA.
| |
Collapse
|
45
|
Burgess EJ, Hoyt LR, Randall MJ, Mank MM, Bivona JJ, Eisenhauer PL, Botten JW, Ballif BA, Lam YW, Wargo MJ, Boyson JE, Ather JL, Poynter ME. Bacterial Lipoproteins Constitute the TLR2-Stimulating Activity of Serum Amyloid A. J Immunol 2018; 201:2377-2384. [PMID: 30158125 PMCID: PMC6179936 DOI: 10.4049/jimmunol.1800503] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 08/04/2018] [Indexed: 12/21/2022]
Abstract
Studies comparing endogenous and recombinant serum amyloid A (SAA) have generated conflicting data on the proinflammatory function of these proteins. In exploring this discrepancy, we found that in contrast to commercially sourced recombinant human SAA1 (hSAA1) proteins produced in Escherichia coli, hSAA1 produced from eukaryotic cells did not promote proinflammatory cytokine production from human or mouse cells, induce Th17 differentiation, or stimulate TLR2. Proteomic analysis of E. coli-derived hSAA1 revealed the presence of numerous bacterial proteins, with several being reported or probable lipoproteins. Treatment of hSAA1 with lipoprotein lipase or addition of a lipopeptide to eukaryotic cell-derived hSAA1 inhibited or induced the production of TNF-α from macrophages, respectively. Our results suggest that a function of SAA is in the binding of TLR2-stimulating bacterial proteins, including lipoproteins, and demand that future studies of SAA employ a recombinant protein derived from eukaryotic cells.
Collapse
Affiliation(s)
- Edward J Burgess
- Vermont Lung Center, University of Vermont, Burlington, VT 05405
- Cellular, Molecular, and Biomedical Sciences Program, University of Vermont, Burlington, VT 05405
- Division of Pulmonary Disease and Critical Care, Department of Medicine, University of Vermont, Burlington, VT 05405
| | - Laura R Hoyt
- Vermont Lung Center, University of Vermont, Burlington, VT 05405
- Division of Pulmonary Disease and Critical Care, Department of Medicine, University of Vermont, Burlington, VT 05405
| | - Matthew J Randall
- Vermont Lung Center, University of Vermont, Burlington, VT 05405
- Division of Pulmonary Disease and Critical Care, Department of Medicine, University of Vermont, Burlington, VT 05405
| | - Madeleine M Mank
- Vermont Lung Center, University of Vermont, Burlington, VT 05405
- Division of Pulmonary Disease and Critical Care, Department of Medicine, University of Vermont, Burlington, VT 05405
| | - Joseph J Bivona
- Vermont Lung Center, University of Vermont, Burlington, VT 05405
- Cellular, Molecular, and Biomedical Sciences Program, University of Vermont, Burlington, VT 05405
- Division of Pulmonary Disease and Critical Care, Department of Medicine, University of Vermont, Burlington, VT 05405
| | - Philip L Eisenhauer
- Immunobiology Division, Department of Medicine, University of Vermont, Burlington, VT 05405
| | - Jason W Botten
- Vermont Lung Center, University of Vermont, Burlington, VT 05405
- Cellular, Molecular, and Biomedical Sciences Program, University of Vermont, Burlington, VT 05405
- Immunobiology Division, Department of Medicine, University of Vermont, Burlington, VT 05405
- Department of Microbiology and Molecular Genetics, University of Vermont, Burlington, VT 05405
| | - Bryan A Ballif
- Department of Biology, University of Vermont, Burlington, VT 05405; and
| | - Ying-Wai Lam
- Department of Biology, University of Vermont, Burlington, VT 05405; and
| | - Matthew J Wargo
- Vermont Lung Center, University of Vermont, Burlington, VT 05405
- Cellular, Molecular, and Biomedical Sciences Program, University of Vermont, Burlington, VT 05405
- Department of Microbiology and Molecular Genetics, University of Vermont, Burlington, VT 05405
| | - Jonathan E Boyson
- Vermont Lung Center, University of Vermont, Burlington, VT 05405
- Cellular, Molecular, and Biomedical Sciences Program, University of Vermont, Burlington, VT 05405
- Department of Surgery, University of Vermont, Burlington, VT 05405
| | - Jennifer L Ather
- Vermont Lung Center, University of Vermont, Burlington, VT 05405
- Division of Pulmonary Disease and Critical Care, Department of Medicine, University of Vermont, Burlington, VT 05405
| | - Matthew E Poynter
- Vermont Lung Center, University of Vermont, Burlington, VT 05405;
- Cellular, Molecular, and Biomedical Sciences Program, University of Vermont, Burlington, VT 05405
- Division of Pulmonary Disease and Critical Care, Department of Medicine, University of Vermont, Burlington, VT 05405
| |
Collapse
|
46
|
Wilson PG, Thompson JC, Shridas P, McNamara PJ, de Beer MC, de Beer FC, Webb NR, Tannock LR. Serum Amyloid A Is an Exchangeable Apolipoprotein. Arterioscler Thromb Vasc Biol 2018; 38:1890-1900. [PMID: 29976766 PMCID: PMC6202200 DOI: 10.1161/atvbaha.118.310979] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [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] [Indexed: 01/15/2023]
Abstract
Objective- SAA (serum amyloid A) is a family of acute-phase reactants that have proinflammatory and proatherogenic activities. SAA is more lipophilic than apoA-I (apolipoprotein A-I), and during an acute-phase response, <10% of plasma SAA is found lipid-free. In most reports, SAA is found exclusively associated with high-density lipoprotein; however, we and others have reported SAA on apoB (apolipoprotein B)-containing lipoproteins in both mice and humans. The goal of this study was to determine whether SAA is an exchangeable apolipoprotein. Approach and Results- Delipidated human SAA was incubated with SAA-free human lipoproteins; then, samples were reisolated by fast protein liquid chromatography, and SAA analyzed by ELISA and immunoblot. Both in vitro and in vivo, we show that SAA associates with any lipoprotein and does not remain in a lipid-free form. Although SAA is preferentially found on high-density lipoprotein, it can exchange between lipoproteins. In the presence of CETP (cholesterol ester transfer protein), there is greater exchange of SAA between lipoproteins. Subjects with diabetes mellitus, but not those with metabolic syndrome, showed altered SAA lipoprotein distribution postprandially. Proteoglycan-mediated lipoprotein retention is thought to be an underlying mechanism for atherosclerosis development. SAA has a proteoglycan-binding domain. Lipoproteins containing SAA had increased proteoglycan binding compared with SAA-free lipoproteins. Conclusions- Thus, SAA is an exchangeable apolipoprotein and increases apoB-containing lipoproteins' proteoglycan binding. We and others have previously reported the presence of SAA on low-density lipoprotein in individuals with obesity, diabetes mellitus, and metabolic syndrome. We propose that the presence of SAA on apoB-containing lipoproteins may contribute to cardiovascular disease development in these populations.
Collapse
Affiliation(s)
- Patricia G Wilson
- Department of Veterans Affairs, Lexington, KY
- Saha Cardiovascular Research Center, College of Medicine, University of Kentucky
- Barnstable Brown Diabetes Center, College of Medicine, University of Kentucky
| | - Joel C Thompson
- Department of Veterans Affairs, Lexington, KY
- Saha Cardiovascular Research Center, College of Medicine, University of Kentucky
- Barnstable Brown Diabetes Center, College of Medicine, University of Kentucky
| | - Preetha Shridas
- Department of Internal Medicine, College of Medicine, University of Kentucky
- Saha Cardiovascular Research Center, College of Medicine, University of Kentucky
- Barnstable Brown Diabetes Center, College of Medicine, University of Kentucky
| | - Patrick J McNamara
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky
| | - Maria C de Beer
- Department of Physiology, College of Medicine, University of Kentucky
- Saha Cardiovascular Research Center, College of Medicine, University of Kentucky
- Barnstable Brown Diabetes Center, College of Medicine, University of Kentucky
| | - Frederick C de Beer
- Department of Internal Medicine, College of Medicine, University of Kentucky
- Saha Cardiovascular Research Center, College of Medicine, University of Kentucky
- Barnstable Brown Diabetes Center, College of Medicine, University of Kentucky
| | - Nancy R Webb
- Department of Veterans Affairs, Lexington, KY
- Department of Pharmacology and Nutritional Sciences, College of Medicine, University of Kentucky
- Saha Cardiovascular Research Center, College of Medicine, University of Kentucky
- Barnstable Brown Diabetes Center, College of Medicine, University of Kentucky
| | - Lisa R Tannock
- Department of Veterans Affairs, Lexington, KY
- Department of Internal Medicine, College of Medicine, University of Kentucky
- Saha Cardiovascular Research Center, College of Medicine, University of Kentucky
- Barnstable Brown Diabetes Center, College of Medicine, University of Kentucky
| |
Collapse
|
47
|
Törőcsik D, Kovács D, Póliska S, Szentkereszty-Kovács Z, Lovászi M, Hegyi K, Szegedi A, Zouboulis CC, Ståhle M. Genome wide analysis of TLR1/2- and TLR4-activated SZ95 sebocytes reveals a complex immune-competence and identifies serum amyloid A as a marker for activated sebaceous glands. PLoS One 2018; 13:e0198323. [PMID: 29927962 PMCID: PMC6013244 DOI: 10.1371/journal.pone.0198323] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 05/17/2018] [Indexed: 11/18/2022] Open
Abstract
Toll-like receptors (TLR) 2 and 4 are active in sebaceous glands and play a central role in the development of acne. Still, there is only limited knowledge on their effect on sebocytes. In this work we performed global gene expression profile analysis with functional clustering of the differentially regulated genes of TLR1/2 (PAM3CSK4)- and TLR4 (lipopolysaccharide [LPS])-activated SZ95 sebocytes. Both TLR1/2- and 4-activation promoted inflammation in a similar manner already at an early time-point (6 hours), regulating genes involved in inflammation, wound healing and chemotaxis reflecting a more complex cytokine and chemokine regulation than previously known. Importantly, lipid metabolism, the primary feature of sebocytes, was affected at the level of gene expression only at a later time point (24 hours) indicating that sebocytes prioritize to exert a pro-inflammatory phenotype when confronted with a danger signal. Supporting the biological relevance of our results, a meta-analysis revealed that the genes showing the strongest up-regulation were also found up-regulated in acne. Of these genes, serum amyloid A 1/2 (SAA1/2) was confirmed to be a suitable protein marker for in vivo activated sebocytes, underlining their immune-competence, which is structurally defined within sebaceous glands of acne and rosacea skin samples. Altogether our findings demonstrate that sebocytes are not only positioned at the end point of inflammation but are actively involved in shaping the inflammatory response with putative diagnostic and therapeutic relevance.
Collapse
Affiliation(s)
- Dániel Törőcsik
- Department of Dermatology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
- Unit of Dermatology and Venereology, Department of Medicine, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Dóra Kovács
- Department of Dermatology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Szilárd Póliska
- Department of Biochemistry and Molecular Biology, Genomic Medicine and Bioinformatics Core Facility, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | | | - Marianna Lovászi
- Department of Dermatology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Katalin Hegyi
- Department of Dermatology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Andrea Szegedi
- Department of Dermatology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
- Division of Dermatological Allergology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Christos C. Zouboulis
- Departments of Dermatology, Venereology, Allergology and Immunology, Dessau Medical Center, Brandenburg Medical School Theodore Fontane, Dessau, Germany
| | - Mona Ståhle
- Unit of Dermatology and Venereology, Department of Medicine, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| |
Collapse
|
48
|
Lee-Thacker S, Choi Y, Taniuchi I, Takarada T, Yoneda Y, Ko C, Jo M. Core Binding Factor β Expression in Ovarian Granulosa Cells Is Essential for Female Fertility. Endocrinology 2018; 159:2094-2109. [PMID: 29554271 PMCID: PMC5905395 DOI: 10.1210/en.2018-00011] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Accepted: 03/11/2018] [Indexed: 02/06/2023]
Abstract
Core binding factor β (CBFβ) is a non-DNA-binding partner of all RUNX proteins and critical for transcription activity of CBF transcription factors (RUNXs/CBFβ). In the ovary, the expression of Runx1 and Runx2 is highly induced by the luteinizing hormone (LH) surge in ovulatory follicles, whereas Cbfb is constitutively expressed. To investigate the physiological significance of CBFs in the ovary, the current study generated two different conditional mutant mouse models in which granulosa cell expression of Cbfb and Runx2 was reduced by Cre recombinase driven by an Esr2 promoter. Cbfbgc-/- and Cbfbgc-/- × Runx2gc+/- mice exhibited severe subfertility and infertility, respectively. In the ovaries of both mutant mice, follicles develop normally, but the majority of preovulatory follicles failed to ovulate either in response to human chorionic gonadotropin administration in pregnant mare serum gonadotropin-primed immature animals or after the LH surge at 5 months of age. Morphological and physiological changes in the corpus luteum of these mutant mice revealed the reduced size, progesterone production, and vascularization, as well as excessive lipid accumulation. In granulosa cells of periovulatory follicles and corpora lutea of these mice, the expression of Edn2, Ptgs1, Lhcgr, Sfrp4, Wnt4, Ccrl2, Lipg, Saa3, and Ptgfr was also drastically reduced. In conclusion, the current study provided in vivo evidence that CBFβ plays an essential role in female fertility by acting as a critical cofactor of CBF transcription factor complexes, which regulate the expression of specific key ovulatory and luteal genes, thus coordinating the ovulatory process and luteal development/function in mice.
Collapse
Affiliation(s)
- Somang Lee-Thacker
- Department of Obstetrics and Gynecology, Chandler Medical Center, University of Kentucky, Lexington, Kentucky
| | - Yohan Choi
- Department of Obstetrics and Gynecology, Chandler Medical Center, University of Kentucky, Lexington, Kentucky
| | - Ichiro Taniuchi
- Laboratory for Transcriptional Regulation, RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa, Japan
| | - Takeshi Takarada
- Department of Regenerative Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Yukio Yoneda
- Section of Prophylactic Pharmacology, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - CheMyong Ko
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinoisa
| | - Misung Jo
- Department of Obstetrics and Gynecology, Chandler Medical Center, University of Kentucky, Lexington, Kentucky
- Correspondence: Misung Jo, PhD, Department of Obstetrics and Gynecology, University of Kentucky, 800 Rose Street, Room MS 335, Lexington, Kentucky 40536. E-mail:
| |
Collapse
|
49
|
Ghasemi S, Sardari K, Mirshokraei P, Hassanpour H. In vitro study of matrix metalloproteinases 1, 2, 9, 13 and serum amyloid A mRNAs expression in equine fibroblast-like synoviocytes treated with doxycycline. Can J Vet Res 2018; 82:82-88. [PMID: 29755186 PMCID: PMC5914083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Accepted: 04/25/2017] [Indexed: 06/08/2023]
Abstract
Application of synthetic matrix metalloproteinases (MMPs) inhibitors, such as doxycycline is one of the possible therapeutic options for osteoarthritis. However, little is known about the protective mechanism of doxycycline in equine models on MMPs inhibitors as well as on serum amyloid A (SAA) gene expression. This study investigated the effects of doxycycline on mRNA expression of MMP-1, MMP-2, MMP-9, MMP-13, and SAA of equine fibroblast-like synoviocytes (FLSs). The FLSs were established from synovial fluids of clinically normal metacarpophalangeal joints of 6 skeletally mature horses. The cells were treated with either 10 or 100 μg/mL of doxycycline for 48 h. The mRNA expression of MMP-1, MMP-2, MMP-9, MMP-13, and SAA were assessed using real-time polymerase chain reaction (PCR). Treatment with doxycycline resulted in significantly decreased mRNA expression of MMP-1 in FLSs at both concentrations (P = 0.001). No significant differences were detected among groups for MMP-2, MMP-9, and MMP-13 (P > 0.05). Only a tendency towards a decrease in mRNA expression level of SAA in the presence of doxycycline could be detected. Doxycycline inhibits MMP-1 gene expression at the transcript level. These findings indicate that doxycycline can protect the articular environment through inhibition of MMP-1 at transcript level.
Collapse
Affiliation(s)
- Samaneh Ghasemi
- Section of Surgery and Radiology, Department of Clinical Sciences (Ghasemi, Sardari); Center of Excellence in Ruminant Abortion and Neonatal Mortality, School of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Razavi Khorasan, Iran (Mirshokraei); Department of Basic Sciences, Physiology Division, Faculty of Veterinary Medicine, Shahrekord University, Shahrekord, Chaharmahal and Bakhtiari, Iran (Hassanpour)
| | - Kamran Sardari
- Section of Surgery and Radiology, Department of Clinical Sciences (Ghasemi, Sardari); Center of Excellence in Ruminant Abortion and Neonatal Mortality, School of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Razavi Khorasan, Iran (Mirshokraei); Department of Basic Sciences, Physiology Division, Faculty of Veterinary Medicine, Shahrekord University, Shahrekord, Chaharmahal and Bakhtiari, Iran (Hassanpour)
| | - Pezhman Mirshokraei
- Section of Surgery and Radiology, Department of Clinical Sciences (Ghasemi, Sardari); Center of Excellence in Ruminant Abortion and Neonatal Mortality, School of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Razavi Khorasan, Iran (Mirshokraei); Department of Basic Sciences, Physiology Division, Faculty of Veterinary Medicine, Shahrekord University, Shahrekord, Chaharmahal and Bakhtiari, Iran (Hassanpour)
| | - Hossein Hassanpour
- Section of Surgery and Radiology, Department of Clinical Sciences (Ghasemi, Sardari); Center of Excellence in Ruminant Abortion and Neonatal Mortality, School of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Razavi Khorasan, Iran (Mirshokraei); Department of Basic Sciences, Physiology Division, Faculty of Veterinary Medicine, Shahrekord University, Shahrekord, Chaharmahal and Bakhtiari, Iran (Hassanpour)
| |
Collapse
|
50
|
Abstract
Serum amyloid A (SAA) is an apolipoprotein that is robustly upregulated in numerous inflammatory diseases and has been implicated as a candidate pro-inflammatory mediator. However, studies comparing endogenous SAAs and recombinant forms of the acute phase protein have generated conflicting data on the function of SAA in immunity. We generated SAA3 knockout mice to evaluate the contribution of SAA3 to immune-mediated disease, and found that mice lacking SAA3 develop adult-onset obesity and metabolic dysfunction along with defects in innate immune development. Mice that lack SAA3 gain more weight, exhibit increased visceral adipose deposition, and develop hepatic steatosis compared to wild-type littermates. Leukocytes from the adipose tissue of SAA3-/- mice express a pro-inflammatory phenotype, and bone marrow derived dendritic cells from mice lacking SAA3 secrete increased levels of IL-1β, IL-6, IL-23, and TNFα in response to LPS compared to cells from wild-type mice. Finally, BMDC lacking SAA3 demonstrate an impaired endotoxin tolerance response and inhibited responses to retinoic acid. Our findings indicate that endogenous SAA3 modulates metabolic and immune homeostasis.
Collapse
Affiliation(s)
- Jennifer L. Ather
- Vermont Lung Center, Division of Pulmonary Disease and Critical Care, Department of Medicine, University of Vermont, Burlington, VT, United States of America
| | - Matthew E. Poynter
- Vermont Lung Center, Division of Pulmonary Disease and Critical Care, Department of Medicine, University of Vermont, Burlington, VT, United States of America
| |
Collapse
|