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Nguyen JN, Mohan EC, Pandya G, Ali U, Tan C, Kofler JK, Shapiro L, Marrelli SP, Chauhan A. CD13 facilitates immune cell migration and aggravates acute injury but promotes chronic post-stroke recovery. J Neuroinflammation 2023; 20:232. [PMID: 37817190 PMCID: PMC10566099 DOI: 10.1186/s12974-023-02918-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 10/01/2023] [Indexed: 10/12/2023] Open
Abstract
INTRODUCTION Acute stroke leads to the activation of myeloid cells. These cells express adhesion molecules and transmigrate to the brain, thereby aggravating injury. Chronically after stroke, repair processes, including angiogenesis, are activated and enhance post-stroke recovery. Activated myeloid cells express CD13, which facilitates their migration into the site of injury. However, angiogenic blood vessels which play a role in recovery also express CD13. Overall, the specific contribution of CD13 to acute and chronic stroke outcomes is unknown. METHODS CD13 expression was estimated in both mice and humans after the ischemic stroke. Young (8-12 weeks) male wild-type and global CD13 knockout (KO) mice were used for this study. Mice underwent 60 min of middle cerebral artery occlusion (MCAO) followed by reperfusion. For acute studies, the mice were euthanized at either 24- or 72 h post-stroke. For chronic studies, the Y-maze, Barnes maze, and the open field were performed on day 7 and day 28 post-stroke. Mice were euthanized at day 30 post-stroke and the brains were collected for assessment of inflammation, white matter injury, tissue loss, and angiogenesis. Flow cytometry was performed on days 3 and 7 post-stroke to quantify infiltrated monocytes and neutrophils and CXCL12/CXCR4 signaling. RESULTS Brain CD13 expression and infiltrated CD13+ monocytes and neutrophils increased acutely after the stroke. The brain CD13+lectin+ blood vessels increased on day 15 after the stroke. Similarly, an increase in the percentage area CD13 was observed in human stroke patients at the subacute time after stroke. Deletion of CD13 resulted in reduced infarct volume and improved neurological recovery after acute stroke. However, CD13KO mice had significantly worse memory deficits, amplified gliosis, and white matter damage compared to wild-type animals at chronic time points. CD13-deficient mice had an increased percentage of CXCL12+cells but a reduced percentage of CXCR4+cells and decreased angiogenesis at day 30 post-stroke. CONCLUSIONS CD13 is involved in the trans-migration of monocytes and neutrophils after stroke, and acutely, led to decreased infarct size and improved behavioral outcomes. However, loss of CD13 led to reductions in post-stroke angiogenesis by reducing CXCL12/CXCR4 signaling.
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Affiliation(s)
- Justin N Nguyen
- University of Texas McGovern Medical School at Houston, Houston, TX, USA
| | - Eric C Mohan
- University of Texas McGovern Medical School at Houston, Houston, TX, USA
| | - Gargee Pandya
- Department of Neurology, University of Texas McGovern Medical School at Houston, Houston, TX, USA
| | - Uzma Ali
- Baylor University, Waco, TX, USA
| | - Chunfeng Tan
- Department of Neurology, University of Texas McGovern Medical School at Houston, Houston, TX, USA
| | - Julia K Kofler
- Department of Pathology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Linda Shapiro
- Center for Vascular Biology, The University of Connecticut Health Center, Farmington, CT, USA
| | - Sean P Marrelli
- Department of Neurology, University of Texas McGovern Medical School at Houston, Houston, TX, USA
| | - Anjali Chauhan
- Department of Neurology, University of Texas McGovern Medical School at Houston, Houston, TX, USA.
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2
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Kang L, Zhao Q, Jiang K, Yu X, Chao H, Yin L, Wang Y. Uncovering potential diagnostic biomarkers of acute myocardial infarction based on machine learning and analyzing its relationship with immune cells. BMC Cardiovasc Disord 2023; 23:2. [PMID: 36600215 DOI: 10.1186/s12872-022-02999-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 12/07/2022] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Acute myocardial infarction (AMI) is a common cardiovascular disease. This study aimed to mine biomarkers associated with AMI to aid in clinical diagnosis and management. METHODS All mRNA and miRNA data were downloaded from public database. Differentially expressed mRNAs (DEmRNAs) and differentially expressed miRNAs (DEmiRNAs) were identified using the metaMA and limma packages, respectively. Functional analysis of the DEmRNAs was performed. In order to explore the relationship between miRNA and mRNA, we construct miRNA-mRNA negative regulatory network. Potential biomarkers were identified based on machine learning. Subsequently, ROC and immune correlation analysis were performed on the identified key DEmRNA biomarkers. RESULTS According to the false discovery rate < 0.05, 92 DEmRNAs and 272 DEmiRNAs were identified. GSEA analysis found that kegg_peroxisome was up-regulated in AMI and kegg_steroid_hormone_biosynthesis was down-regulated in AMI compared to normal controls. 5 key DEmRNA biomarkers were identified based on machine learning, and classification diagnostic models were constructed. The random forests (RF) model has the highest accuracy. This indicates that RF model has high diagnostic value and may contribute to the early diagnosis of AMI. ROC analysis found that the area under curve of 5 key DEmRNA biomarkers were all greater than 0.7. Pearson correlation analysis showed that 5 key DEmRNA biomarkers were correlated with most of the differential infiltrating immune cells. CONCLUSION The identification of new molecular biomarkers provides potential research directions for exploring the molecular mechanism of AMI. Furthermore, it is important to explore new diagnostic genetic biomarkers for the diagnosis and treatment of AMI.
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Affiliation(s)
- Ling Kang
- Department of Cardiology, The Second Affiliated Hospital of Shandong First Medical University, No. 706, Taishan Street, Taian, 271000, Shandong, China
| | - Qiang Zhao
- Department of Cardiology, The Second Affiliated Hospital of Shandong First Medical University, No. 706, Taishan Street, Taian, 271000, Shandong, China
| | - Ke Jiang
- Department of Cardiology, The Second Affiliated Hospital of Shandong First Medical University, No. 706, Taishan Street, Taian, 271000, Shandong, China.
| | - Xiaoyan Yu
- Coronary Care Unit, The Second Affiliated Hospital of Shandong First Medical University, No. 706, Taishan Street, Taian, 271000, Shandong, China
| | - Hui Chao
- Coronary Care Unit, The Second Affiliated Hospital of Shandong First Medical University, No. 706, Taishan Street, Taian, 271000, Shandong, China
| | - Lijuan Yin
- Department of Cardiology, The Second Affiliated Hospital of Shandong First Medical University, No. 706, Taishan Street, Taian, 271000, Shandong, China
| | - Yueqing Wang
- Department of Cardiology, The Second Affiliated Hospital of Shandong First Medical University, No. 706, Taishan Street, Taian, 271000, Shandong, China.
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3
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Tang N, Tian W, Ma GY, Xiao X, Zhou L, Li ZZ, Liu XX, Li CY, Wu KH, Liu W, Wang XY, Gao YY, Yang X, Qi J, Li D, Liu Y, Chen WS, Gao J, Li XQ, Cao W. TRPC channels blockade abolishes endotoxemic cardiac dysfunction by hampering intracellular inflammation and Ca 2+ leakage. Nat Commun 2022; 13:7455. [PMID: 36460692 PMCID: PMC9718841 DOI: 10.1038/s41467-022-35242-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 11/23/2022] [Indexed: 12/04/2022] Open
Abstract
Intracellular Ca2+ dysregulation is a key marker in septic cardiac dysfunction; however, regulation of the classic Ca2+ regulatory modules cannot successfully abolish this symptom. Here we show that the knockout of transient receptor potential canonical (TRPC) channel isoforms TRPC1 and TRPC6 can ameliorate LPS-challenged heart failure and prolong survival in mice. The LPS-triggered Ca2+ release from the endoplasmic reticulum both in cardiomyocytes and macrophages is significantly inhibited by Trpc1 or Trpc6 knockout. Meanwhile, TRPC's molecular partner - calmodulin - is uncoupled during Trpc1 or Trpc6 deficiency and binds to TLR4's Pococurante site and atypical isoleucine-glutamine-like motif to block the inflammation cascade. Blocking the C-terminal CaM/IP3R binding domain in TRPC with chemical inhibitor could obstruct the Ca2+ leak and TLR4-mediated inflammation burst, demonstrating a cardioprotective effect in endotoxemia and polymicrobial sepsis. Our findings provide insight into the pathogenesis of endotoxemic cardiac dysfunction and suggest a novel approach for its treatment.
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Affiliation(s)
- Na Tang
- grid.144022.10000 0004 1760 4150Department of Pharmacy, School of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi China ,grid.144022.10000 0004 1760 4150Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University, Yangling, Shaanxi China
| | - Wen Tian
- grid.233520.50000 0004 1761 4404Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi’an, Shaanxi China ,grid.233520.50000 0004 1761 4404Key Laboratory of Gastrointestinal Pharmacology of Chinese Materia Medica of the State Administration of Traditional Chinese Medicine, Fourth Military Medical University, Xi’an, Shaanxi China
| | - Guang-Yuan Ma
- grid.144022.10000 0004 1760 4150Department of Pharmacy, School of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi China ,grid.144022.10000 0004 1760 4150Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University, Yangling, Shaanxi China
| | - Xiong Xiao
- grid.233520.50000 0004 1761 4404Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi’an, Shaanxi China ,grid.233520.50000 0004 1761 4404Key Laboratory of Gastrointestinal Pharmacology of Chinese Materia Medica of the State Administration of Traditional Chinese Medicine, Fourth Military Medical University, Xi’an, Shaanxi China
| | - Lei Zhou
- grid.144022.10000 0004 1760 4150Department of Pharmacy, School of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi China ,grid.144022.10000 0004 1760 4150Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University, Yangling, Shaanxi China
| | - Ze-Zhi Li
- grid.144022.10000 0004 1760 4150Department of Pharmacy, School of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi China ,grid.144022.10000 0004 1760 4150Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University, Yangling, Shaanxi China
| | - Xiao-Xiao Liu
- grid.233520.50000 0004 1761 4404Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi’an, Shaanxi China ,grid.233520.50000 0004 1761 4404Key Laboratory of Gastrointestinal Pharmacology of Chinese Materia Medica of the State Administration of Traditional Chinese Medicine, Fourth Military Medical University, Xi’an, Shaanxi China
| | - Chong-Yao Li
- grid.412262.10000 0004 1761 5538Department of Pharmacy, Xi’an No.3 Hospital, the Affiliated Hospital of Northwest University, Xi’an, Shaanxi China
| | - Ke-Han Wu
- grid.144022.10000 0004 1760 4150Department of Pharmacy, School of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi China ,grid.144022.10000 0004 1760 4150Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University, Yangling, Shaanxi China
| | - Wenjuan Liu
- grid.144022.10000 0004 1760 4150Department of Pharmacy, School of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi China
| | - Xue-Ying Wang
- grid.233520.50000 0004 1761 4404Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi’an, Shaanxi China ,grid.233520.50000 0004 1761 4404Key Laboratory of Gastrointestinal Pharmacology of Chinese Materia Medica of the State Administration of Traditional Chinese Medicine, Fourth Military Medical University, Xi’an, Shaanxi China
| | - Yuan-Yuan Gao
- grid.233520.50000 0004 1761 4404Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi’an, Shaanxi China ,grid.233520.50000 0004 1761 4404Key Laboratory of Gastrointestinal Pharmacology of Chinese Materia Medica of the State Administration of Traditional Chinese Medicine, Fourth Military Medical University, Xi’an, Shaanxi China
| | - Xin Yang
- grid.144022.10000 0004 1760 4150Department of Pharmacy, School of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi China ,grid.144022.10000 0004 1760 4150Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University, Yangling, Shaanxi China
| | - Jianzhao Qi
- grid.144022.10000 0004 1760 4150Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University, Yangling, Shaanxi China
| | - Ding Li
- grid.144022.10000 0004 1760 4150Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University, Yangling, Shaanxi China
| | - Yang Liu
- grid.233520.50000 0004 1761 4404Department of Cardiovascular Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi China
| | - Wen-Sheng Chen
- grid.233520.50000 0004 1761 4404Department of Cardiovascular Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi China ,Department of Cardiovascular Surgery, Xi’an Gaoxin Hospital, Xi’an, Shaanxi China
| | - Jinming Gao
- grid.144022.10000 0004 1760 4150Department of Pharmacy, School of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi China ,grid.144022.10000 0004 1760 4150Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University, Yangling, Shaanxi China
| | - Xiao-Qiang Li
- grid.233520.50000 0004 1761 4404Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi’an, Shaanxi China ,grid.233520.50000 0004 1761 4404Key Laboratory of Gastrointestinal Pharmacology of Chinese Materia Medica of the State Administration of Traditional Chinese Medicine, Fourth Military Medical University, Xi’an, Shaanxi China
| | - Wei Cao
- grid.144022.10000 0004 1760 4150Department of Pharmacy, School of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi China ,grid.144022.10000 0004 1760 4150Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University, Yangling, Shaanxi China
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4
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Phoenix KN, Yue Z, Yue L, Cronin CG, Liang BT, Hoeppner LH, Claffey KP. PLCβ2 Promotes VEGF-Induced Vascular Permeability. Arterioscler Thromb Vasc Biol 2022; 42:1229-1241. [PMID: 35861069 PMCID: PMC9492642 DOI: 10.1161/atvbaha.122.317645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Regulation of vascular permeability is critical to maintaining tissue metabolic homeostasis. VEGF (vascular endothelial growth factor) is a key stimulus of vascular permeability in acute and chronic diseases including ischemia reperfusion injury, sepsis, and cancer. Identification of novel regulators of vascular permeability would allow for the development of effective targeted therapeutics for patients with unmet medical need. METHODS In vitro and in vivo models of VEGFA-induced vascular permeability, pathological permeability, quantitation of intracellular calcium release and cell entry, and phosphatidylinositol 4,5-bisphosphate levels were evaluated with and without modulation of PLC (phospholipase C) β2. RESULTS Global knock-out of PLCβ2 in mice resulted in blockade of VEGFA-induced vascular permeability in vivo and transendothelial permeability in primary lung endothelial cells. Further work in an immortalized human microvascular cell line modulated with stable knockdown of PLCβ2 recapitulated the observations in the mouse model and primary cell assays. Additionally, loss of PLCβ2 limited both intracellular release and extracellular entry of calcium following VEGF stimulation as well as reduced basal and VEGFA-stimulated levels of phosphatidylinositol 4,5-bisphosphate compared to control cells. Finally, loss of PLCβ2 in both a hyperoxia-induced lung permeability model and a cardiac ischemia:reperfusion model resulted in improved animal outcomes when compared with wild-type controls. CONCLUSIONS The results implicate PLCβ2 as a key positive regulator of VEGF-induced vascular permeability through regulation of both calcium flux and phosphatidylinositol 4,5-bisphosphate levels at the cellular level. Targeting of PLCβ2 in a therapeutic setting may provide a novel approach to regulating vascular permeability in patients.
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Affiliation(s)
- Kathryn N. Phoenix
- Center for Vascular Biology, Department of Cell Biology, University of Connecticut Health Center, Farmington, CT
| | - Zhichao Yue
- Pat and Jim Calhoun Cardiology Center, University of Connecticut Health Center, Farmington, CT
| | - Lixia Yue
- Pat and Jim Calhoun Cardiology Center, University of Connecticut Health Center, Farmington, CT
| | - Chunxia G. Cronin
- Pat and Jim Calhoun Cardiology Center, University of Connecticut Health Center, Farmington, CT
| | - Bruce T. Liang
- Pat and Jim Calhoun Cardiology Center, University of Connecticut Health Center, Farmington, CT
| | - Luke H. Hoeppner
- The Hormel Institute, University of Minnesota, Austin, MN, USA
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN, USA
| | - Kevin P. Claffey
- Center for Vascular Biology, Department of Cell Biology, University of Connecticut Health Center, Farmington, CT
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5
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Tsou PS, Lu C, Gurrea-Rubio M, Muraoka S, Campbell PL, Wu Q, Model EN, Lind ME, Vichaikul S, Mattichak MN, Brodie WD, Hervoso JL, Ory S, Amarista CI, Pervez R, Junginger L, Ali M, Hodish G, O’Mara MM, Ruth JH, Robida AM, Alt AJ, Zhang C, Urquhart AG, Lawton JN, Chung KC, Maerz T, Saunders TL, Groppi VE, Fox DA, Amin MA. Soluble CD13 induces inflammatory arthritis by activating the bradykinin receptor B1. J Clin Invest 2022; 132:151827. [PMID: 35439173 PMCID: PMC9151693 DOI: 10.1172/jci151827] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 04/08/2022] [Indexed: 11/17/2022] Open
Abstract
CD13, an ectoenzyme on myeloid and stromal cells, also circulates as a shed, soluble protein (sCD13) with powerful chemoattractant, angiogenic, and arthritogenic properties, which require engagement of a G protein-coupled receptor (GPCR). Here we identify the GPCR that mediates sCD13 arthritogenic actions as the bradykinin receptor B1 (B1R). Immunofluorescence and immunoblotting verified high expression of B1R in rheumatoid arthritis (RA) synovial tissue and fibroblast-like synoviocytes (FLSs), and demonstrated binding of sCD13 to B1R. Chemotaxis, and phosphorylation of Erk1/2, induced by sCD13, were inhibited by B1R antagonists. In ex vivo RA synovial tissue organ cultures, a B1R antagonist reduced secretion of inflammatory cytokines. Several mouse arthritis models, including serum transfer, antigen-induced, and local innate immune stimulation arthritis models, were attenuated in Cd13-/- and B1R-/- mice and were alleviated by B1R antagonism. These results establish a CD13/B1R axis in the pathogenesis of inflammatory arthritis and identify B1R as a compelling therapeutic target in RA and potentially other inflammatory diseases.
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Affiliation(s)
- Pei-Suen Tsou
- Division of Rheumatology and Clinical Autoimmunity Center of Excellence, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Chenyang Lu
- Division of Rheumatology and Clinical Autoimmunity Center of Excellence, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA.,Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Mikel Gurrea-Rubio
- Division of Rheumatology and Clinical Autoimmunity Center of Excellence, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Sei Muraoka
- Division of Rheumatology and Clinical Autoimmunity Center of Excellence, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Phillip L. Campbell
- Division of Rheumatology and Clinical Autoimmunity Center of Excellence, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Qi Wu
- Division of Rheumatology and Clinical Autoimmunity Center of Excellence, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Ellen N. Model
- Division of Rheumatology and Clinical Autoimmunity Center of Excellence, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Matthew E. Lind
- Division of Rheumatology and Clinical Autoimmunity Center of Excellence, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Sirapa Vichaikul
- Division of Rheumatology and Clinical Autoimmunity Center of Excellence, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Megan N. Mattichak
- Division of Rheumatology and Clinical Autoimmunity Center of Excellence, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - William D. Brodie
- Division of Rheumatology and Clinical Autoimmunity Center of Excellence, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Jonatan L. Hervoso
- Division of Rheumatology and Clinical Autoimmunity Center of Excellence, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Sarah Ory
- Division of Rheumatology and Clinical Autoimmunity Center of Excellence, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Camila I. Amarista
- Division of Rheumatology and Clinical Autoimmunity Center of Excellence, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Rida Pervez
- Department of Orthopedic Surgery, University of Michigan Health System, Ann Arbor, Michigan, USA
| | - Lucas Junginger
- Department of Orthopedic Surgery, University of Michigan Health System, Ann Arbor, Michigan, USA
| | - Mustafa Ali
- Division of Rheumatology and Clinical Autoimmunity Center of Excellence, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Gal Hodish
- Division of Rheumatology and Clinical Autoimmunity Center of Excellence, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Morgan M. O’Mara
- Division of Rheumatology and Clinical Autoimmunity Center of Excellence, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Jeffrey H. Ruth
- Division of Rheumatology and Clinical Autoimmunity Center of Excellence, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | | | | | | | - Andrew G. Urquhart
- Department of Orthopedic Surgery, University of Michigan Health System, Ann Arbor, Michigan, USA
| | - Jeffrey N. Lawton
- Department of Orthopedic Surgery, University of Michigan Health System, Ann Arbor, Michigan, USA
| | - Kevin C. Chung
- Department of Orthopedic Surgery, University of Michigan Health System, Ann Arbor, Michigan, USA
| | - Tristan Maerz
- Department of Orthopedic Surgery, University of Michigan Health System, Ann Arbor, Michigan, USA
| | - Thomas L. Saunders
- Division of Rheumatology and Clinical Autoimmunity Center of Excellence, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA.,Biomedical Research Core Facilities, Transgenic Animal Model Core, and
| | - Vincent E. Groppi
- Center for Discovery of New Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - David A. Fox
- Division of Rheumatology and Clinical Autoimmunity Center of Excellence, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - M. Asif Amin
- Division of Rheumatology and Clinical Autoimmunity Center of Excellence, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
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Is tumour-expressed aminopeptidase N (APN/CD13) structurally and functionally unique? Biochim Biophys Acta Rev Cancer 2021; 1876:188641. [PMID: 34695533 DOI: 10.1016/j.bbcan.2021.188641] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 10/17/2021] [Accepted: 10/18/2021] [Indexed: 12/14/2022]
Abstract
Aminopeptidase N (APN/CD13) is a multifunctional glycoprotein that acts as a peptidase, receptor, and signalling molecule in a tissue-dependent manner. The activities of APN have been implicated in the progression of many cancers, pointing toward significant therapeutic potential for cancer treatment. However, despite the tumour-specific functions of this protein that have been uncovered, the ubiquitous nature of its expression in normal tissues as generally reported remains a limitation to the potential utility of APN as a target for cancer therapeutics and drug discovery. With this in mind, we have extensively explored the literature, and present a comprehensive review that for the first-time provides evidence to support the suggestion that tumour-expressed APN may in fact be unique in structure, function, substrate specificity and activity, contrary to its nature in normal tissues. The review also focuses on the biology of APN, and its "moonlighting" functional roles in both normal physiology and cancer development. Several APN-targeting approaches that have been explored over recent decades as therapeutic strategies in cancer treatment, including APN-targeting agents reported both in preclinical and clinical studies, are also extensively discussed. This review concludes by posing critical questions about APN that remain unanswered and unexplored, hence providing opportunities for further research.
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7
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Effect of BuShen JiangZhi Recipe on Atherosclerosis in ApoE -/- Mice by Regulating the Expression of Anpep via mmu_circRNA_22187. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:4738264. [PMID: 34527061 PMCID: PMC8437613 DOI: 10.1155/2021/4738264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 08/13/2021] [Accepted: 08/16/2021] [Indexed: 11/19/2022]
Abstract
The BuShen JiangZhi (BSJZ) recipe is a Chinese medicine compound with the effect of tonifying the kidney, replenishing essence, and lowering blood fat to unblock vessels. The purpose of this study is to explore whether the mechanism of BSJZ for effective intervention in the treatment of AS is related to mmu_circRNA_22187 and aminopeptidase N (Anpep). ApoE−/− mice were induced by a high-fat diet to replicate the AS model. 24 ApoE−/− mice were randomly divided into model group (group M), BSJZ group (group BS), and 12 C57BL/6 mice of the same genetic background and same weeks of age as the normal control group (group C). Mice in the BS group were given an aqueous solution of BSJZ by gavage, while mice in groups C and M were given the same volume of distilled water. HE and Oil Red O staining were used to detect the pathomorphology and lipid accumulation of mouse aortic sinus. Arraystar version 2.0 mouse circRNA chip was used to scan with Agilent Scanner G2505C, and the differential circRNAs expression profile of mice aorta was obtained. Scatter plot, volcano plot, and cluster map, respectively, visualized the differentially expressed circRNAs, as well as the types of circRNAs and the chromosomes' distribution, screened and compared the differentially expressed circRNAs intersection between groups by Venny software, and then combined ceRNA bioinformatics analysis to construct a ceRNA network. The results showed that BSJZ could significantly reduce the area of AS plaque and lipid accumulation in the aortic sinus of ApoE−/− mice induced by a high-fat diet. The bioinformatics analysis showed that mmu_circRNA_22187 may be a key circRNA of BSJZ intervention in the treatment of AS. Compared with group C, the expressions of Anpep mRNA and protein were upregulated in group M. After the intervention of BSJZ, the expressions of Anpep mRNA and protein were downregulated. Therefore, BSJZ could effectively treat AS which might be related to the regulation of mmu_circRNA_22187 and Anpep.
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8
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Chung JJ, Kim ST, Zaman S, Helmers MR, Arisi MF, Li EC, Tran Z, Chen CW, Altshuler P, Chen M, Burdick JA, Atluri P. Therapeutic Efficacy of Cryopreserved, Allogeneic Extracellular Vesicles for Treatment of Acute Myocardial Infarction. Int Heart J 2021; 62:381-389. [PMID: 33731514 PMCID: PMC8103174 DOI: 10.1536/ihj.20-224] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Extracellular vesicles (EV) that are derived from endothelial progenitor cells (EPC) have been determined to be a novel therapy for acute myocardial infarction, with a promise for immediate "off-the-shelf" delivery. Early experience suggests delivery of EVs from allogeneic sources is safe. Yet, clinical translation of this therapy requires assurances of both EV stability following cryopreservation and absence of an adverse immunologic response to EVs from allogeneic donors. Thus, more bioactivity studies on allogeneic EVs after cold storage are necessary to establish quality standards for its widespread clinical use. Thus, in this study, we aimed to demonstrate the safety and efficacy in delivering cryopreserved EVs in allogeneic recipients as a therapy for acute myocardial infarction.In this present study, we have analyzed the cardioprotective effects of allogeneic EPC-derived EVs after storage at -80°C for 2 months, using a shear-thinning gel (STG) as an in vivo delivery vehicle. EV size, proteome, and nucleic acid cargo were observed to remain steady through extended cryopreservation via nanoparticle tracking analysis, mass spectrometry, and nanodrop analysis, respectively. Fresh and previously frozen EVs in STG were delivered intramyocardially in a rat model of myocardial infarction (MI), with both showing improvements in contractility, angiogenesis, and scar thickness in comparison to phosphate-buffered saline (PBS) and STG controls at 4 weeks post-MI. Pathologic analyses and flow cytometry revealed minimal inflammatory and immune upregulation upon exposure of tissue to EVs pooled from allogeneic donor cells.Allogeneic EPC-EVs have been known to elicit minimal immune activity and retain therapeutic efficacy after at least 2 months of cryopreservation in a post-MI model.
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Affiliation(s)
- Jennifer J. Chung
- Division of Cardiovascular Surgery, Department of Surgery, University of Pennsylvania, Philadelphia, USA
| | - Samuel T. Kim
- Division of Cardiovascular Surgery, Department of Surgery, University of Pennsylvania, Philadelphia, USA
| | - Samir Zaman
- Division of Cardiovascular Surgery, Department of Surgery, University of Pennsylvania, Philadelphia, USA
| | - Mark R. Helmers
- Division of Cardiovascular Surgery, Department of Surgery, University of Pennsylvania, Philadelphia, USA
| | - Maria F. Arisi
- Division of Cardiovascular Surgery, Department of Surgery, University of Pennsylvania, Philadelphia, USA
| | - Elizabeth C. Li
- Division of Cardiovascular Surgery, Department of Surgery, University of Pennsylvania, Philadelphia, USA
| | - Zoe Tran
- Division of Cardiovascular Surgery, Department of Surgery, University of Pennsylvania, Philadelphia, USA
| | - Carol W. Chen
- Division of Cardiovascular Surgery, Department of Surgery, University of Pennsylvania, Philadelphia, USA
| | - Peter Altshuler
- Division of Cardiovascular Surgery, Department of Surgery, University of Pennsylvania, Philadelphia, USA
| | - Minna Chen
- Department of Bioengineering, University of Pennsylvania, Philadelphia, USA
| | - Jason A. Burdick
- Department of Bioengineering, University of Pennsylvania, Philadelphia, USA
| | - Pavan Atluri
- Division of Cardiovascular Surgery, Department of Surgery, University of Pennsylvania, Philadelphia, USA
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9
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Vargas F, Wangesteen R, Rodríguez-Gómez I, García-Estañ J. Aminopeptidases in Cardiovascular and Renal Function. Role as Predictive Renal Injury Biomarkers. Int J Mol Sci 2020; 21:E5615. [PMID: 32764495 PMCID: PMC7460675 DOI: 10.3390/ijms21165615] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 07/23/2020] [Accepted: 08/03/2020] [Indexed: 01/08/2023] Open
Abstract
Aminopeptidases (APs) are metalloenzymes that hydrolyze peptides and polypeptides by scission of the N-terminus amino acid and that also participate in the intracellular final digestion of proteins. APs play an important role in protein maturation, signal transduction, and cell-cycle control, among other processes. These enzymes are especially relevant in the control of cardiovascular and renal functions. APs participate in the regulation of the systemic and local renin-angiotensin system and also modulate the activity of neuropeptides, kinins, immunomodulatory peptides, and cytokines, even contributing to cholesterol uptake and angiogenesis. This review focuses on the role of four key APs, aspartyl-, alanyl-, glutamyl-, and leucyl-cystinyl-aminopeptidases, in the control of blood pressure (BP) and renal function and on their association with different cardiovascular and renal diseases. In this context, the effects of AP inhibitors are analyzed as therapeutic tools for BP control and renal diseases. Their role as urinary biomarkers of renal injury is also explored. The enzymatic activities of urinary APs, which act as hydrolyzing peptides on the luminal surface of the renal tubule, have emerged as early predictive renal injury biomarkers in both acute and chronic renal nephropathies, including those induced by nephrotoxic agents, obesity, hypertension, or diabetes. Hence, the analysis of urinary AP appears to be a promising diagnostic and prognostic approach to renal disease in both research and clinical settings.
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Affiliation(s)
- Félix Vargas
- Depto. Fisiologia, Fac. Medicina, Universidad de Granada, 18071 Granada, Spain
| | | | | | - Joaquín García-Estañ
- Depto. Fisiologia, Fac. Medicina, IMIB, Universidad de Murcia, 30120 Murcia, Spain
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10
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Lu C, Amin MA, Fox DA. CD13/Aminopeptidase N Is a Potential Therapeutic Target for Inflammatory Disorders. THE JOURNAL OF IMMUNOLOGY 2020; 204:3-11. [PMID: 31848300 DOI: 10.4049/jimmunol.1900868] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 10/01/2019] [Indexed: 02/05/2023]
Abstract
CD13/aminopeptidase N is a widely expressed ectoenzyme with multiple functions. As an enzyme, CD13 regulates activities of numerous cytokines by cleaving their N-terminals and is involved in Ag processing by trimming the peptides bound to MHC class II. Independent of its enzymatic activity, cell membrane CD13 functions by cross-linking-induced signal transduction, regulation of receptor recycling, enhancement of FcγR-mediated phagocytosis, and acting as a receptor for cytokines. Moreover, soluble CD13 has multiple proinflammatory roles mediated by binding to G-protein-coupled receptors. CD13 not only modulates development and activities of immune-related cells, but also regulates functions of inflammatory mediators. Therefore, CD13 is important in the pathogenesis of various inflammatory disorders. Inhibitors of CD13 have shown impressive anti-inflammatory effects, but none of them has yet been used for clinical therapy of human inflammatory diseases. We reevaluate CD13's regulatory role in inflammation and suggest that CD13 could be a potential therapeutic target for inflammatory disorders.
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Affiliation(s)
- Chenyang Lu
- Division of Rheumatology, Clinical Autoimmunity Center of Excellence, University of Michigan Medical School, Ann Arbor, MI 48109; and.,Department of Rheumatology and Immunology, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Mohammad A Amin
- Division of Rheumatology, Clinical Autoimmunity Center of Excellence, University of Michigan Medical School, Ann Arbor, MI 48109; and
| | - David A Fox
- Division of Rheumatology, Clinical Autoimmunity Center of Excellence, University of Michigan Medical School, Ann Arbor, MI 48109; and
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11
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Devarakonda CV, Pereira FE, Smith JD, Shapiro LH, Ghosh M. CD13 deficiency leads to increased oxidative stress and larger atherosclerotic lesions. Atherosclerosis 2019; 287:70-80. [PMID: 31229835 PMCID: PMC6746312 DOI: 10.1016/j.atherosclerosis.2019.06.901] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 06/06/2019] [Accepted: 06/12/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND AND AIMS Atherosclerosis is an inflammatory cardiovascular disorder characterized by accumulation of lipid-loaded macrophages in the intima. Prolonged accumulation leads to apoptosis of macrophages and eventually to progression of lesion development. Prevention of macrophage accumulation within the intima has been shown to reduce lesion formation. Since CD13 mediates trafficking of macrophages to sites of injury and repair, we tested the role of CD13 in atherosclerosis. METHODS CD13+/+Ldlr-/- and CD13-/-Ldlr-/- (low density lipoprotein receptor) mice were fed basal or high fat diet (HFD) for 9, 12 and 15 weeks. Mice were euthanized and aortic roots along with innominate arteries were analyzed for atherosclerotic lesions. Cellular mechanisms were determined in vitro using CD13+/+ and CD13-/- bone marrow derived macrophages (BMDMs) incubated with highly oxidized low-density lipoprotein (oxLDL). RESULTS At the 9 and 12 week time points, no differences were observed in the average lesion size, but at the 15 week time point, CD13-/-Ldlr-/- mice had larger lesions with exaggerated necrotic areas. CD13+/+ and CD13-/- macrophages endocytosed similar amounts of oxLDL, but CD13-/- macrophages generated higher amounts of oxidative stressors in comparison to CD13+/+ macrophages. This increased oxidative stress was due to increased nitric oxide production in oxLDL treated CD13-/- macrophages. Accumulated oxidative stress subsequently led to accelerated apoptosis and enhanced necrosis of oxLDL treated CD13-/- macrophages. CONCLUSIONS Contrary to our prediction, CD13 deficiency led to larger atherosclerotic lesions with increased areas of necrosis. Mechanistically, CD13 deficiency led to increased nitric oxide production and consequently, greater oxidative stress.
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Affiliation(s)
- Charan V Devarakonda
- Center for Vascular Biology, University of Connecticut Health Center, Farmington, CT, 06030, USA
| | - Flavia E Pereira
- Center for Vascular Biology, University of Connecticut Health Center, Farmington, CT, 06030, USA
| | - Jonathan D Smith
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, 44195, USA
| | - Linda H Shapiro
- Center for Vascular Biology, University of Connecticut Health Center, Farmington, CT, 06030, USA.
| | - Mallika Ghosh
- Center for Vascular Biology, University of Connecticut Health Center, Farmington, CT, 06030, USA.
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12
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Du Y, Lu C, Morgan RL, Stinson WA, Campbell PL, Cealey E, Fu W, Lepore NJ, Hervoso JL, Cui H, Urquhart AG, Lawton JN, Chung KC, Fox DA, Amin MA. Angiogenic and Arthritogenic Properties of the Soluble Form of CD13. THE JOURNAL OF IMMUNOLOGY 2019; 203:360-369. [PMID: 31189572 DOI: 10.4049/jimmunol.1801276] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 05/15/2019] [Indexed: 11/19/2022]
Abstract
Aminopeptidase N/CD13 is expressed by fibroblast-like synoviocytes (FLS) and monocytes (MNs) in inflamed human synovial tissue (ST). This study examined the role of soluble CD13 (sCD13) in angiogenesis, MN migration, phosphorylation of signaling molecules, and induction of arthritis. The contribution of sCD13 was examined in angiogenesis and MN migration using sCD13 and CD13-depleted rheumatoid arthritis (RA) synovial fluids (SFs). An enzymatically inactive mutant CD13 and intact wild-type (WT) CD13 were used to determine whether its enzymatic activity contributes to the arthritis-related functions. CD13-induced phosphorylation of signaling molecules was determined by Western blotting. The effect of sCD13 on cytokine secretion from RA ST and RA FLS was evaluated. sCD13 was injected into C57BL/6 mouse knees to assess its arthritogenicity. sCD13 induced angiogenesis and was a potent chemoattractant for MNs and U937 cells. Inhibitors of Erk1/2, Src, NF-κB, Jnk, and pertussis toxin, a G protein-coupled receptor inhibitor, decreased sCD13-stimulated chemotaxis. CD13-depleted RA SF induced significantly less MN migration than sham-depleted SF, and addition of mutant or WT CD13 to CD13-depleted RA SF equally restored MN migration. sCD13 and recombinant WT or mutant CD13 had similar effects on signaling molecule phosphorylation, indicating that the enzymatic activity of CD13 had no role in these functions. CD13 increased the expression of proinflammatory cytokines by RA FLS, and a CD13 neutralizing Ab inhibited cytokine secretion from RA ST organ culture. Mouse knee joints injected with CD13 exhibited increased circumference and proinflammatory mediator expression. These data support the concept that sCD13 plays a pivotal role in RA and acute inflammatory arthritis.
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Affiliation(s)
- Yuxuan Du
- Division of Rheumatology, Clinical Autoimmunity Center of Excellence, University of Michigan Medical School, Ann Arbor, MI 48109.,Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China.,National Center for Clinical Laboratories/Beijing Engineering Research Center of Laboratory Medicine, Beijing Hospital, National Center of Gerontology, Beijing 100730, China
| | - Chenyang Lu
- Division of Rheumatology, Clinical Autoimmunity Center of Excellence, University of Michigan Medical School, Ann Arbor, MI 48109
| | - Rachel L Morgan
- Division of Rheumatology, Clinical Autoimmunity Center of Excellence, University of Michigan Medical School, Ann Arbor, MI 48109
| | - William A Stinson
- Division of Rheumatology, Clinical Autoimmunity Center of Excellence, University of Michigan Medical School, Ann Arbor, MI 48109
| | - Phillip L Campbell
- Division of Rheumatology, Clinical Autoimmunity Center of Excellence, University of Michigan Medical School, Ann Arbor, MI 48109
| | - Ellen Cealey
- Division of Rheumatology, Clinical Autoimmunity Center of Excellence, University of Michigan Medical School, Ann Arbor, MI 48109
| | - Wenyi Fu
- Division of Rheumatology, Clinical Autoimmunity Center of Excellence, University of Michigan Medical School, Ann Arbor, MI 48109.,Department of Rheumatology and Immunology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110022, China; and
| | - Nicholas J Lepore
- Division of Rheumatology, Clinical Autoimmunity Center of Excellence, University of Michigan Medical School, Ann Arbor, MI 48109
| | - Jonatan L Hervoso
- Division of Rheumatology, Clinical Autoimmunity Center of Excellence, University of Michigan Medical School, Ann Arbor, MI 48109
| | - Huadong Cui
- Division of Rheumatology, Clinical Autoimmunity Center of Excellence, University of Michigan Medical School, Ann Arbor, MI 48109.,Department of Rheumatology and Immunology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110022, China; and
| | - Andrew G Urquhart
- Department of Orthopaedic Surgery, University of Michigan Health System, A. Alfred Taubman Health Care Center, Ann Arbor, MI 48109
| | - Jeffrey N Lawton
- Department of Orthopaedic Surgery, University of Michigan Health System, A. Alfred Taubman Health Care Center, Ann Arbor, MI 48109
| | - Kevin C Chung
- Department of Orthopaedic Surgery, University of Michigan Health System, A. Alfred Taubman Health Care Center, Ann Arbor, MI 48109
| | - David A Fox
- Division of Rheumatology, Clinical Autoimmunity Center of Excellence, University of Michigan Medical School, Ann Arbor, MI 48109;
| | - Mohammad A Amin
- Division of Rheumatology, Clinical Autoimmunity Center of Excellence, University of Michigan Medical School, Ann Arbor, MI 48109
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13
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Shui LJ, Meng Y, Huang C, Qian Y, Liu JY. Aminopeptidase N expression in the endometrium could affect endometrial receptivity. Biochem Biophys Res Commun 2019; 514:469-474. [PMID: 31056265 DOI: 10.1016/j.bbrc.2019.04.174] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 04/25/2019] [Indexed: 11/26/2022]
Abstract
Aminopeptidase N (ANPEP) is a membrane-bound zinc-dependent peptidase. Although it is widely believed that ANPEP acts as an important angiogenesis regulatory factor, there are few studies about its function in the female reproductive system. In our previous research, we applied Isobaric Tags for Relative and Absolute Quantitation (iTRAQ) to analyze the influence of different controlled superovulation treatments for Assisted Reproductive Technology, In Vitro Fertilization and Embryo Transfer (IVF-ET)) patients from a global proteomic perspective to search for potential biomarkers associated with endometrium receptivity and embryo implantation. ANPEP is one of the proteins that demonstrated differential expression between different treatment groups and may be closely associated with endometrial receptivity. In this study, we assessed the expression of ANPEP in the endometrium of mice at different ages and found it to be highest in the mature period. We also detected ANPEP expression in the endometrium of IVF-ET patients in the proliferative, preimplantation and implantation stages, and the highest expression level of ANPEP was found in the last group. Human primary endometrial stromal cells were infected with an adenovirus expression vector containing the ANPEP gene and a green fluorescent protein (GFP) fusion protein; the mRNA levels of HOXA-10, LIF, and integrin β3 were found to be increased. Therefore, we conclude that ANPEP could be involved in the regulation of endometrial receptivity.
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Affiliation(s)
- Li-Jun Shui
- State Key Laboratory of Reproductive Medicine, Clinical Center of Reproductive Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China; Clinical Center of Reproductive Medicine, The First Affiliated Hospital of USTC, Division of Life Science and Medicine, University of Science and Technology of China, Hefei, China
| | - Yan Meng
- State Key Laboratory of Reproductive Medicine, Clinical Center of Reproductive Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Cun Huang
- Clinical Center of Reproductive Medicine, Ma'anshan Maternal and Child Health Hospital, Ma'anshan, China
| | - Yi Qian
- State Key Laboratory of Reproductive Medicine, Clinical Center of Reproductive Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
| | - Jia-Yin Liu
- State Key Laboratory of Reproductive Medicine, Clinical Center of Reproductive Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
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14
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Ghosh M, Lo R, Ivic I, Aguilera B, Qendro V, Devarakonda C, Shapiro LH. CD13 tethers the IQGAP1-ARF6-EFA6 complex to the plasma membrane to promote ARF6 activation, β1 integrin recycling, and cell migration. Sci Signal 2019; 12:12/579/eaav5938. [PMID: 31040262 DOI: 10.1126/scisignal.aav5938] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Cell attachment to the extracellular matrix (ECM) requires a balance between integrin internalization and recycling to the surface that is mediated by numerous proteins, emphasizing the complexity of these processes. Upon ligand binding in various cells, the β1 integrin is internalized, traffics to early endosomes, and is returned to the plasma membrane through recycling endosomes. This trafficking process depends on the cyclical activation and inactivation of small guanosine triphosphatases (GTPases) by their specific guanine exchange factors (GEFs) and their GTPase-activating proteins (GAPs). In this study, we found that the cell surface antigen CD13, a multifunctional transmembrane molecule that regulates cell-cell adhesion and receptor-mediated endocytosis, also promoted cell migration and colocalized with β1 integrin at sites of cell adhesion and at the leading edge. A lack of CD13 resulted in aberrant trafficking of internalized β1 integrin to late endosomes and its ultimate degradation. Our data indicate that CD13 promoted ARF6 GTPase activity by positioning the ARF6-GEF EFA6 at the cell membrane. In migrating cells, a complex containing phosphorylated CD13, IQGAP1, GTP-bound (active) ARF6, and EFA6 at the leading edge promoted the ARF6 GTPase cycling and cell migration. Together, our findings uncover a role for CD13 in the fundamental cellular processes of receptor recycling, regulation of small GTPase activities, cell-ECM interactions, and cell migration.
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Affiliation(s)
- Mallika Ghosh
- Center for Vascular Biology, Department of Cell Biology, University of Connecticut School of Medicine, Farmington, CT 06032, USA.
| | - Robin Lo
- Center for Vascular Biology, Department of Cell Biology, University of Connecticut School of Medicine, Farmington, CT 06032, USA
| | - Ivan Ivic
- Center for Vascular Biology, Department of Cell Biology, University of Connecticut School of Medicine, Farmington, CT 06032, USA
| | - Brian Aguilera
- Center for Vascular Biology, Department of Cell Biology, University of Connecticut School of Medicine, Farmington, CT 06032, USA
| | - Veneta Qendro
- Center for Vascular Biology, Department of Cell Biology, University of Connecticut School of Medicine, Farmington, CT 06032, USA
| | - Charan Devarakonda
- Center for Vascular Biology, Department of Cell Biology, University of Connecticut School of Medicine, Farmington, CT 06032, USA
| | - Linda H Shapiro
- Center for Vascular Biology, Department of Cell Biology, University of Connecticut School of Medicine, Farmington, CT 06032, USA.
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15
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Meng Y, Zhang Z, Liu K, Ye L, Liang Y, Gu W. Aminopeptidase N (CD13) targeted MR and NIRF dual-modal imaging of ovarian tumor xenograft. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 93:968-974. [PMID: 30274135 DOI: 10.1016/j.msec.2018.09.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2018] [Revised: 08/09/2018] [Accepted: 09/01/2018] [Indexed: 11/15/2022]
Abstract
The development of tumor-specific imaging nanoprobes with the potential to improve the accuracy of cancer diagnosis has become an area of intense research. Aminopeptidase N (CD13) predominantly expresses on the surface of ovarian tumor cells and can be specifically recognized by Asn-Gly-Arg (NGR) peptide. The applicability of CD13 as a target for specific ovarian tumor imaging, however, remains unexploited so far. In this study, Cy5.5-labeled, NGR-conjugated iron oxide nanoparticles (Cy5.5-NGR-Fe3O4 NPs) were prepared as an ovarian tumor specific bimodal imaging nanoprobe. It is demonstrated that the conjugation of NGR targeting moiety leads to a higher cellular uptake toward ES-2 cells, the human ovarian carcinoma cells that highly express CD13. Moreover, magnetic resonance imaging of ovarian tumor xenograft reveals that the Fe3O4-Cy5.5-NGR NPs results in a significant T2* signal reduction in the tumor. Meanwhile, near infrared fluorescence imaging indicates a higher accumulation of Fe3O4-Cy5.5-NGR NPs in the tumor xenograft. Therefore, CD13 could be applied as a novel and efficient target for constructing ovarian tumor specific nanoprobes with improved accuracy for ovarian tumor diagnosis.
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Affiliation(s)
- Ying Meng
- Department of Radiology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100006, PR China
| | - Zixin Zhang
- Department of Radiology, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, PR China
| | - Kang Liu
- School of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, PR China
| | - Ling Ye
- School of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, PR China
| | - Yuting Liang
- Department of Radiology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100006, PR China.
| | - Wei Gu
- School of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, PR China.
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16
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Wan GX, Ji LH, Xia WB, Cheng L, Zhang YG. Bioinformatics identification of potential candidate blood indicators for doxorubicin-induced heart failure. Exp Ther Med 2018; 16:2534-2544. [PMID: 30186487 PMCID: PMC6122467 DOI: 10.3892/etm.2018.6482] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 06/27/2018] [Indexed: 02/05/2023] Open
Abstract
The care of individual patients requiring anthracyclines remains challenging as uncertainty persists on predictors of cardiotoxicity. The aim of the present study was to identify potential candidate blood indicators of doxorubicin-induced heart failure. The gene expression profiles of GSE40447 and GSE9128 microarray data were downloaded from the Gene Expression Omnibus database to identify differentially expressed genes (DEGs) using the R/Limma package or GEO2R. Functional and pathway enrichment analysis on DEGs were performed using DAVID database. The cardiovascular disease (CVD)-related DEGs were screen out based on the CardioGenBase database. The protein-protein interaction (PPI) network was constructed with STRING database and visualized by using Cytoscape. Then, the CVD-related DEGs were validated by intersection analysis with DEGs in GSE9128. The overlapping DEGs with a consistent expression pattern in GSE40447 and GSE9128 were identified as candidate indicators for doxorubicin-induced heart failure. A total of 516 DEGs potentially associated with doxorubicin-induced heart failure in GSE40447 were identified, which were mainly enriched in the gene ontology terms related to B cells, leukocytes, lymphocyte activation and B cell receptor signaling pathway. Of the DEGs, 42 were screened out as CVD-related DEGs by using CardioGenBase. Seven genes with high connectivity degree were presented in the PPI network. Finally, 5/6 CVD-related DEGs revealed by the intersection analysis were validated by GSE9128 and highlighted as candidate indicators of doxorubicin-induced heart failure: CD163, CD28, SLC25A20, ANPEP and TLR5. Several genes, including the 5 previously mentioned, were proposed as potential candidate blood indicators for doxorubicin-induced heart failure. Further experimental validations are greatly warranted for future clinical application.
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Affiliation(s)
- Guo-Xing Wan
- Department of Cardiology, Second Affiliated Hospital Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
- Cardiovascular Laboratory, Centre for Translational Medicine, Second Affiliated Hospital Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
| | - Li-Hua Ji
- Department of Cardiology, Second Affiliated Hospital Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
- Cardiovascular Laboratory, Centre for Translational Medicine, Second Affiliated Hospital Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
| | - Wen-Bin Xia
- Department of Cardiology, Second Affiliated Hospital Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
- Cardiovascular Laboratory, Centre for Translational Medicine, Second Affiliated Hospital Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
| | - Lan Cheng
- Department of Cardiology, Second Affiliated Hospital Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
- Cardiovascular Laboratory, Centre for Translational Medicine, Second Affiliated Hospital Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
| | - Yong-Gang Zhang
- Department of Cardiology, Second Affiliated Hospital Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
- Cardiovascular Laboratory, Centre for Translational Medicine, Second Affiliated Hospital Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
- Correspondence to: Professor Yong-Gang Zhang, Department of Cardiology, Second Affiliated Hospital of Shantou University Medical College, 69 Dongxia North Road, Shantou, Guangdong 515041, P.R. China, E-mail:
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18
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Abstract
Myocardial remodeling following myocardial infarction (MI) is emerging as key causes of chronic infarct mortality. Interleukin-6 is a classic pro-inflammatory cytokine needed to mount an effective immune response. It seems that interleukin-6 acts as an important role in the dynamic and superbly orchestrated process of innate immunity after MI. Interleukin-6 timely suppresses of innate immune signals to prevent the catastrophic consequences of uncontrolled inflammation on cardiac geometry and function, and thus tunes myocardial remodeling. A comprehensive understanding of biological processes of interleukin-6 in innate immunity leading to inflammatory response and disease-related ventricular remodeling is helpful to find the solution of chronic heart failure. To accomplish this, we reviewed the articles of interleukin-6 regard to inflammation, innate immunity, and cardiac remodeling. This review focuses on the role of interleukin-6 that dominates cell-mediated immunity, especially on neutrophils, monocytes, macrophages, and fibroblasts. In addition, we will also briefly discuss other inflammatory cytokines involved in this process within the paper.
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19
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Licona-Limón I, Garay-Canales CA, Muñoz-Paleta O, Ortega E. CD13 mediates phagocytosis in human monocytic cells. J Leukoc Biol 2015; 98:85-98. [PMID: 25934926 PMCID: PMC7167067 DOI: 10.1189/jlb.2a0914-458r] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Accepted: 04/06/2015] [Indexed: 11/24/2022] Open
Abstract
The myelomonocytic marker aminopeptidase N/CD13 is a novel phagocytic receptor in monocytes and macrophages. CD13 is a membrane‐bound ectopeptidase, highly expressed on monocytes, macrophages, and dendritic cells. CD13 is involved in diverse functions, including degradation of peptide mediators, cellular adhesion, migration, viral endocytosis, signaling, and positive modulation of phagocytosis mediated by FcγRs and other phagocytic receptors. In this work, we explored whether besides acting as an accessory receptor, CD13 by itself is a primary phagocytic receptor. We found that hCD13 mediates efficient phagocytosis of large particles (erythrocytes) modified so as to interact with the cell only through CD13 in human macrophages and THP‐1 monocytic cells. The extent of this phagocytosis is comparable with the phagocytosis mediated through the canonical phagocytic receptor FcγRI. Furthermore, we demonstrated that hCD13 expression in the nonphagocytic cell line HEK293 is sufficient to enable these cells to internalize particles bound through hCD13. CD13‐mediated phagocytosis is independent of other phagocytic receptors, as it occurs in the absence of FcγRs, CR3, and most phagocytic receptors. Phagocytosis through CD13 is independent of its enzymatic activity but is dependent on actin rearrangement and activation of PI3K and is partially dependent on Syk activation. Moreover, the cross‐linking of CD13 with antibodies rapidly induced pSyk in human macrophages. Finally, we observed that antibody‐mediated cross‐linking of hCD13, expressed in the murine macrophage‐like J774 cell line, induces production of ROS. These results demonstrate that CD13 is a fully competent phagocytic receptor capable of mediating internalization of large particles.
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Affiliation(s)
- Ileana Licona-Limón
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico D.F., México
| | - Claudia A Garay-Canales
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico D.F., México
| | - Ofelia Muñoz-Paleta
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico D.F., México
| | - Enrique Ortega
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico D.F., México
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Ghosh M, Subramani J, Rahman MM, Shapiro LH. CD13 restricts TLR4 endocytic signal transduction in inflammation. THE JOURNAL OF IMMUNOLOGY 2015; 194:4466-76. [PMID: 25801433 DOI: 10.4049/jimmunol.1403133] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 02/19/2015] [Indexed: 01/09/2023]
Abstract
Dysregulation of the innate immune response underlies numerous pathological conditions. The TLR4 is the prototypical sensor of infection or injury that orchestrates the innate response via sequential activation of both cell surface and endocytic signaling pathways that trigger distinct downstream consequences. CD14 binds and delivers LPS to TLR4 and has been identified as a positive regulator of TLR4 signal transduction. It is logical that negative regulators of this process also exist to maintain the critical balance required for fighting infection, healing damaged tissue, and resolving inflammation. We showed that CD13 negatively modulates receptor-mediated Ag uptake in dendritic cells to control T cell activation in adaptive immunity. In this study, we report that myeloid CD13 governs internalization of TLR4 and subsequent innate signaling cascades, activating IRF-3 independently of CD14. CD13 is cointernalized with TLR4, CD14, and dynamin into Rab5(+) early endosomes upon LPS treatment. Importantly, in response to TLR4 ligands HMGB1 and LPS, p-IRF-3 activation and transcription of its target genes are enhanced in CD13(KO) dendritic cells, whereas TLR4 surface signaling remains unaffected, resulting in a skewed inflammatory response. This finding is physiologically relevant as ischemic injury in vivo provoked identical TLR4 responses. Finally, CD13(KO) mice showed significantly enhanced IFNβ-mediated signal transduction via JAK-STAT, escalating inducible NO synthase transcription levels and promoting accumulation of oxidative stress mediators and tissue injury. Mechanistically, inflammatory activation of macrophages upregulates CD13 expression and CD13 and TLR4 coimmunoprecipitate. Therefore, CD13 negatively regulates TLR4 signaling, thereby balancing the innate response by maintaining the inflammatory equilibrium critical to innate immune regulation.
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Affiliation(s)
- Mallika Ghosh
- Center for Vascular Biology, University of Connecticut Health Center, Farmington, CT 06030
| | - Jaganathan Subramani
- Center for Vascular Biology, University of Connecticut Health Center, Farmington, CT 06030
| | - M Mamunur Rahman
- Center for Vascular Biology, University of Connecticut Health Center, Farmington, CT 06030
| | - Linda H Shapiro
- Center for Vascular Biology, University of Connecticut Health Center, Farmington, CT 06030
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Taylor RA, Hammond MD, Ai Y, Sansing LH. CX3CR1 signaling on monocytes is dispensable after intracerebral hemorrhage. PLoS One 2014; 9:e114472. [PMID: 25469644 PMCID: PMC4255025 DOI: 10.1371/journal.pone.0114472] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Accepted: 11/07/2014] [Indexed: 12/20/2022] Open
Abstract
Intracerebral hemorrhage is a subset of stroke for which there is no specific treatment. The Ly6Chi CCR2+ monocytes have been shown to contribute to acute injury after intracerebral hemorrhage. The other murine monocyte subset expresses CX3CR1 and lower Ly6C levels, and contributes to repair in other disease models. We hypothesized that the Ly6Clo CX3CR1+ monocytes would contribute to recovery after intracerebral hemorrhage. Intracerebral hemorrhage was modeled by blood injection in WT and CX3CR1-null bone marrow chimeras. Neurological outcomes and leukocyte recruitment were quantified at various time points. Functional outcomes were equal at 1, 3, 7, and 14 days after intracerebral hemorrhage in both genotypes. No differences were observed in leukocyte recruitment between genotypes on either 3 or 7 days after intracerebral hemorrhage. A few hundred Ly6Clo monocytes were found in the ipsilateral hemisphere in each genotype and they did not change over time. Peripherally derived CX3CR1+ monocytes were observed in the perihematomal brain 7 and 14 days after intracerebral hemorrhage. Our data suggests CX3CR1 signaling on monocytes does not play an influential role in acute injury or functional recovery after intracerebral hemorrhage and therefore CX3CR1 is not a therapeutic target to improve outcome after intracerebral hemorrhage.
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Affiliation(s)
- Roslyn A. Taylor
- Department of Immunology, University of Connecticut Health Center, Farmington, Connecticut, United States of America
- Department of Neurology, Yale University School of Medicine, New Haven, Connecticut, United States of America
| | - Matthew D. Hammond
- Department of Neurology, Yale University School of Medicine, New Haven, Connecticut, United States of America
- Department of Neuroscience, University of Connecticut Health Center, Farmington, Connecticut, United States of America
| | - Youxi Ai
- Department of Neurology, Yale University School of Medicine, New Haven, Connecticut, United States of America
| | - Lauren H. Sansing
- Department of Neurology, Yale University School of Medicine, New Haven, Connecticut, United States of America
- * E-mail:
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22
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Ghosh M, Gerber C, Rahman MM, Vernier KM, Pereira FE, Subramani J, Caromile LA, Shapiro LH. Molecular mechanisms regulating CD13-mediated adhesion. Immunology 2014; 142:636-47. [PMID: 24627994 PMCID: PMC4107673 DOI: 10.1111/imm.12279] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Revised: 03/05/2014] [Accepted: 03/10/2014] [Indexed: 12/13/2022] Open
Abstract
CD13/Aminopeptidase N is a transmembrane metalloproteinase that is expressed in many tissues where it regulates various cellular functions. In inflammation, CD13 is expressed on myeloid cells, is up-regulated on endothelial cells at sites of inflammation and mediates monocyte/endothelial adhesion by homotypic interactions. In animal models the lack of CD13 alters the profiles of infiltrating inflammatory cells at sites of ischaemic injury. Here, we found that CD13 expression is enriched specifically on the pro-inflammatory subset of monocytes, suggesting that CD13 may regulate trafficking and function of specific subsets of immune cells. To further dissect the mechanisms regulating CD13-dependent trafficking we used the murine model of thioglycollate-induced sterile peritonitis. Peritoneal monocytes, macrophages and dendritic cells were significantly decreased in inflammatory exudates from global CD13KO animals when compared with wild-type controls. Furthermore, adoptive transfer of wild-type and CD13KO primary myeloid cells, or wild-type myeloid cells pre-treated with CD13-blocking antibodies into thioglycollate-challenged wild-type recipients demonstrated fewer CD13KO or treated cells in the lavage, suggesting that CD13 expression confers a competitive advantage in trafficking. Similarly, both wild-type and CD13KO cells were reduced in infiltrates in CD13KO recipients, confirming that both monocytic and endothelial CD13 contribute to trafficking. Finally, murine monocyte cell lines expressing mouse/human chimeric CD13 molecules demonstrated that the C-terminal domain of the protein mediates CD13 adhesion. Therefore, this work verifies that the altered inflammatory trafficking in CD13KO mice is the result of aberrant myeloid cell subset trafficking and further defines the molecular mechanisms underlying this regulation.
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Affiliation(s)
- Mallika Ghosh
- Center for Vascular Biology, University of Connecticut Health Center, Farmington, CT, USA
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Tillmanns J, Schneider M, Fraccarollo D, Schmitto JD, Länger F, Richter D, Bauersachs J, Samnick S. PET imaging of cardiac wound healing using a novel [68Ga]-labeled NGR probe in rat myocardial infarction. Mol Imaging Biol 2014; 17:76-86. [PMID: 25011975 DOI: 10.1007/s11307-014-0751-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Revised: 05/15/2014] [Accepted: 05/17/2014] [Indexed: 10/25/2022]
Abstract
PURPOSE Peptides containing the asparagine-glycine-arginine (NGR) motif bind to aminopeptidase N (CD13), which is expressed on inflammatory cells, endothelial cells, and fibroblasts. It is unclear whether radiolabeled NGR-containing tracers could be used for in vivo imaging of the early wound-healing phase after myocardial infarction (MI) using positron emission tomography (PET). PROCEDURES Uptake of novel tracer [(68)Ga]NGR was assessed together with [(68)Ga]arginine-glycine-aspartic acid ([(68)Ga]RGD) and 2-deoxy-2-[(18) F]fluoro-D-glucose after myocardial ischemia/reperfusion (MI/R) injury using μ-PET and autoradiography, and relative expressions of CD13 and integrin β3 were assessed in fibroblasts, inflammatory cells, and endothelial cells by immunohistochemistry. RESULTS In the infarcted myocardium, uptake of [(68)Ga]NGR was maximal from days 3 to 7 after MI/R, and correlated with fibroblast and inflammatory cell infiltration as well as [(68)Ga]RGD uptake. CONCLUSIONS [(68)Ga]NGR allows noninvasive and sequential determination of CD13 expression in fibroblasts and inflammatory cells by PET. This will facilitate monitoring of CD13 in the individual wound healing processes, allowing patient-specific therapies to improve outcome after MI.
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Affiliation(s)
- Jochen Tillmanns
- Department of Cardiology and Angiology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany,
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Rahman MM, Subramani J, Ghosh M, Denninger JK, Takeda K, Fong GH, Carlson ME, Shapiro LH. CD13 promotes mesenchymal stem cell-mediated regeneration of ischemic muscle. Front Physiol 2014; 4:402. [PMID: 24409152 PMCID: PMC3885827 DOI: 10.3389/fphys.2013.00402] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 12/21/2013] [Indexed: 01/13/2023] Open
Abstract
Mesenchymal stem cells (MSCs) are multipotent, tissue-resident cells that can facilitate tissue regeneration and thus, show great promise as potential therapeutic agents. Functional MSCs have been isolated and characterized from a wide array of adult tissues and are universally identified by the shared expression of a core panel of MSCs markers. One of these markers is the multifunctional cell surface peptidase CD13 that has been shown to be expressed on human and murine MSCs from many tissues. To investigate whether this universal expression indicates a functional role for CD13 in MSC biology we isolated, expanded and characterized MSCs from bone marrow of wild type (WT) and CD13KO mice. Characterization of these cells demonstrated that both WT and CD13KO MSCs expressed the full complement of MSC markers (CD29, CD44, CD49e, CD105, Sca1), showed comparable proliferation rates and were capable of differentiating toward the adipogenic and osteogenic lineages. However, MSCs lacking CD13 were unable to differentiate into vascular cells, consistent with our previous characterization of CD13 as an angiogenic regulator. Compared to WT MSCs, adhesion and migration on various extracellular matrices of CD13KO MSCs were significantly impaired, which correlated with decreased phospho-FAK levels and cytoskeletal alterations. Crosslinking human MSCs with activating CD13 antibodies increased cell adhesion to endothelial monolayers and induced FAK activation in a time dependent manner. In agreement with these in vitro data, intramuscular injection of CD13KO MSCs in a model of severe ischemic limb injury resulted in significantly poorer perfusion, decreased ambulation, increased necrosis and impaired vascularization compared to those receiving WT MSCs. This study suggests that CD13 regulates FAK activation to promote MSC adhesion and migration, thus, contributing to MSC-mediated tissue repair. CD13 may present a viable target to enhance the efficacy of mesenchymal stem cell therapies.
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Affiliation(s)
- M Mamunur Rahman
- Center for Vascular Biology, University of Connecticut Health Center Farmington, CT, USA
| | - Jaganathan Subramani
- Center for Vascular Biology, University of Connecticut Health Center Farmington, CT, USA ; Department of Anesthesiology, Texas Tech University Health Sciences Center Lubbock, TX, USA
| | - Mallika Ghosh
- Center for Vascular Biology, University of Connecticut Health Center Farmington, CT, USA
| | - Jiyeon K Denninger
- Center for Vascular Biology, University of Connecticut Health Center Farmington, CT, USA
| | - Kotaro Takeda
- Center for Vascular Biology, University of Connecticut Health Center Farmington, CT, USA
| | - Guo-Hua Fong
- Center for Vascular Biology, University of Connecticut Health Center Farmington, CT, USA
| | - Morgan E Carlson
- Center on Aging, University of Connecticut Health Center Farmington, CT, USA ; Drug Discovery, Genomics Institute of the Novartis Research Foundation San Diego, CA, USA
| | - Linda H Shapiro
- Center for Vascular Biology, University of Connecticut Health Center Farmington, CT, USA
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