1
|
KAWARA TAKETO, INOUE KOJI, SHIOZAWA SHUNICHI, OSAWA KAYO, KOMAI KOICHIRO. Genetic Rare Variants Affecting Multiple Pathways in Japanese Patients with Palindromic Rheumatism. THE KOBE JOURNAL OF MEDICAL SCIENCES 2024; 70:E26-E38. [PMID: 38719338 PMCID: PMC11086632 DOI: 10.24546/0100489391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 02/14/2024] [Indexed: 05/12/2024]
Abstract
Palindromic rheumatism (PR) is a type of cryptogenic paroxysmal arthritis. Several genes may be involved in PR pathogenesis; however, conducting comprehensive case-control genetic studies for PR poses challenges owing to its rarity as a disease. Moreover, case-control studies may overlook rare variants that occur infrequently but play a significant role in pathogenesis. This study aimed to identify disease-related genes in Japanese patients with PR using whole-genome sequencing (WGS) and rare-variant analysis. Genomic DNA was obtained from two familial cases and one sporadic case, and it was subjected to WGS. WGS data of 104 healthy individuals obtained from a public database were used as controls. We performed data analysis for rare variants on detected variants using SKAT-O, KBAC, and SKAT, and subsequently defined significant genes. Significant genes combined with variants shared between the cases were defined as disease-related genes. We also performed pathway analysis for disease-related genes using Reactome. We identified 2,695,244 variants shared between cases; after excluding polymorphisms and noise, 74,640 variants were detected. We identified 540 disease-related genes, including 1,893 variants. Furthermore, we identified 32 significant pathways. Our results indicate that the detected genes and pathways in this study may be involved in PR pathogenesis.
Collapse
Affiliation(s)
- TAKETO KAWARA
- Division of Medical Biophysics, Department of Biophysics, Kobe University Graduate School of Health Sciences, Kobe, Japan
| | - KOJI INOUE
- Shichikawa Arthritis Research Center, Osaka Rehabilitation Hospital, Hannan, Japan
| | | | - KAYO OSAWA
- Department of Medical Technology, Kobe Tokiwa University, Kobe, Japan
| | - KOICHIRO KOMAI
- Division of Medical Biophysics, Department of Biophysics, Kobe University Graduate School of Health Sciences, Kobe, Japan
| |
Collapse
|
2
|
Boccarelli A, Del Buono N, Esposito F. Review of Patient Gene Profiles Obtained through a Non-Negative Matrix Factorization-Based Framework to Determine the Role Inflammation Plays in Neuroblastoma Pathogenesis. Int J Mol Sci 2024; 25:4406. [PMID: 38673990 PMCID: PMC11050151 DOI: 10.3390/ijms25084406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Revised: 04/07/2024] [Accepted: 04/10/2024] [Indexed: 04/28/2024] Open
Abstract
Neuroblastoma is the most common extracranial solid tumor in children. It is a highly heterogeneous tumor consisting of different subcellular types and genetic abnormalities. Literature data confirm the biological and clinical complexity of this cancer, which requires a wider availability of gene targets for the implementation of personalized therapy. This paper presents a study of neuroblastoma samples from primary tumors of untreated patients. The focus of this analysis is to evaluate the impact that the inflammatory process may have on the pathogenesis of neuroblastoma. Eighty-eight gene profiles were selected and analyzed using a non-negative matrix factorization framework to extract a subset of genes relevant to the identification of an inflammatory phenotype, whose targets (PIK3CG, NFATC2, PIK3R2, VAV1, RAC2, COL6A2, COL6A3, COL12A1, COL14A1, ITGAL, ITGB7, FOS, PTGS2, PTPRC, ITPR3) allow further investigation. Based on the genetic signals automatically derived from the data used, neuroblastoma could be classified according to stage rather than as a "cold" or "poorly immunogenic" tumor.
Collapse
Affiliation(s)
- Angelina Boccarelli
- Department of Precision and Regenerative Medicine and Polo Jonico, School of Medicine, University of Bari Aldo Moro, Piazza Giulio Cesare 11, 70121 Bari, Italy;
| | - Nicoletta Del Buono
- Department of Mathematics, University of Bari Aldo Moro, Via Edoardo Orabona 4, 70125 Bari, Italy;
| | - Flavia Esposito
- Department of Mathematics, University of Bari Aldo Moro, Via Edoardo Orabona 4, 70125 Bari, Italy;
| |
Collapse
|
3
|
Cai M, Zheng Q, Chen Y, Liu S, Zhu H, Bai B. Insights from the neural guidance factor Netrin-1 into neurodegeneration and other diseases. Front Mol Neurosci 2024; 17:1379726. [PMID: 38638604 PMCID: PMC11024333 DOI: 10.3389/fnmol.2024.1379726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 03/22/2024] [Indexed: 04/20/2024] Open
Abstract
Netrin-1 was initially discovered as a neuronal growth cue for axonal guidance, and its functions have later been identified in inflammation, tumorigenesis, neurodegeneration, and other disorders. We have recently found its alterations in the brains with Alzheimer's disease, which might provide important clues to the mechanisms of some unique pathologies. To provide better understanding of this promising molecule, we here summarize research progresses in genetics, pathology, biochemistry, cell biology and other studies of Netrin-1 about its mechanistic roles and biomarker potentials with an emphasis on clinical neurodegenerative disorders in order to expand understanding of this promising molecular player in human diseases.
Collapse
Affiliation(s)
- Minqi Cai
- Department of Laboratory Medicine, Nanjing Drum Tower Hospital Clinical College of Jiangsu University, Nanjing, Jiangsu, China
| | - Qian Zheng
- Health Management Center, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, China
| | - Yiqiang Chen
- Center for Precision Medicine, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, China
| | - Siyuan Liu
- Center for Precision Medicine, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu, China
| | - Huimin Zhu
- Chemistry and Biomedicine Innovation Center, Medical School of Nanjing University, Nanjing, China
| | - Bing Bai
- Department of Laboratory Medicine, Nanjing Drum Tower Hospital Clinical College of Jiangsu University, Nanjing, Jiangsu, China
| |
Collapse
|
4
|
Ducarouge B, Redavid AR, Victoor C, Chira R, Fonseca A, Hervieu M, Bergé R, Lengrand J, Vieugué P, Neves D, Goddard I, Richaud M, Laval PA, Rama N, Goldschneider D, Paradisi A, Gourdin N, Chabaud S, Treilleux I, Gadot N, Ray-Coquard I, Depil S, Decaudin D, Némati F, Marangoni E, Mery-Lamarche E, Génestie C, Tabone-Eglinger S, Devouassoux-Shisheboran M, Moore KJ, Gibert B, Mehlen P, Bernet A. Netrin-1 blockade inhibits tumor associated Myeloid-derived suppressor cells, cancer stemness and alleviates resistance to chemotherapy and immune checkpoint inhibitor. Cell Death Differ 2023; 30:2201-2212. [PMID: 37633969 PMCID: PMC10589209 DOI: 10.1038/s41418-023-01209-x] [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: 09/06/2021] [Revised: 07/26/2023] [Accepted: 08/08/2023] [Indexed: 08/28/2023] Open
Abstract
Drug resistance and cancer relapse represent significant therapeutic challenges after chemotherapy or immunotherapy, and a major limiting factor for long-term cancer survival. Netrin-1 was initially identified as a neuronal navigation cue but has more recently emerged as an interesting target for cancer therapy, which is currently clinically investigated. We show here that netrin-1 is an independent prognostic marker for clinical progression of breast and ovary cancers. Cancer stem cells (CSCs)/Tumor initiating cells (TICs) are hypothesized to be involved in clinical progression, tumor relapse and resistance. We found a significant correlation between netrin-1 expression and cancer stem cell (CSC) markers levels. We also show in different mice models of resistance to chemotherapies that netrin-1 interference using a therapeutic netrin-1 blocking antibody alleviates resistance to chemotherapy and triggers an efficient delay in tumor relapse and this effect is associated with CSCs loss. We also demonstrate that netrin-1 interference limits tumor resistance to immune checkpoint inhibitor and provide evidence linking this enhanced anti-tumor efficacy to a decreased recruitment of a subtype of myeloid-derived suppressor cells (MDSCs) called polymorphonuclear (PMN)-MDSCs. We have functionally demonstrated that these immune cells promote CSCs features and, consequently, resistance to anti-cancer treatments. Together, these data support the view of both a direct and indirect contribution of netrin-1 to cancer stemness and we propose that this may lead to therapeutic opportunities by combining conventional chemotherapies and immunotherapies with netrin-1 interfering drugs.
Collapse
Affiliation(s)
- Benjamin Ducarouge
- Apoptosis, Cancer and Development Laboratory- Equipe labellisée 'La Ligue', Labex DEVweCAN, Institut Convergence PLAsCAN, Centre de Cancérologie de Lyon, INSERM U1052-CNRS UMR5286, Université de Lyon, Centre Léon Bérard, 69008, Lyon, France
- Netris Pharma, Centre Léon Bérard, 69008, Lyon, France
| | - Anna-Rita Redavid
- Apoptosis, Cancer and Development Laboratory- Equipe labellisée 'La Ligue', Labex DEVweCAN, Institut Convergence PLAsCAN, Centre de Cancérologie de Lyon, INSERM U1052-CNRS UMR5286, Université de Lyon, Centre Léon Bérard, 69008, Lyon, France
| | - Camille Victoor
- Apoptosis, Cancer and Development Laboratory- Equipe labellisée 'La Ligue', Labex DEVweCAN, Institut Convergence PLAsCAN, Centre de Cancérologie de Lyon, INSERM U1052-CNRS UMR5286, Université de Lyon, Centre Léon Bérard, 69008, Lyon, France
- Netris Pharma, Centre Léon Bérard, 69008, Lyon, France
| | - Ruxanda Chira
- Apoptosis, Cancer and Development Laboratory- Equipe labellisée 'La Ligue', Labex DEVweCAN, Institut Convergence PLAsCAN, Centre de Cancérologie de Lyon, INSERM U1052-CNRS UMR5286, Université de Lyon, Centre Léon Bérard, 69008, Lyon, France
- Netris Pharma, Centre Léon Bérard, 69008, Lyon, France
| | | | - Maëva Hervieu
- Apoptosis, Cancer and Development Laboratory- Equipe labellisée 'La Ligue', Labex DEVweCAN, Institut Convergence PLAsCAN, Centre de Cancérologie de Lyon, INSERM U1052-CNRS UMR5286, Université de Lyon, Centre Léon Bérard, 69008, Lyon, France
| | - Roméo Bergé
- Apoptosis, Cancer and Development Laboratory- Equipe labellisée 'La Ligue', Labex DEVweCAN, Institut Convergence PLAsCAN, Centre de Cancérologie de Lyon, INSERM U1052-CNRS UMR5286, Université de Lyon, Centre Léon Bérard, 69008, Lyon, France
- Netris Pharma, Centre Léon Bérard, 69008, Lyon, France
| | - Justine Lengrand
- Apoptosis, Cancer and Development Laboratory- Equipe labellisée 'La Ligue', Labex DEVweCAN, Institut Convergence PLAsCAN, Centre de Cancérologie de Lyon, INSERM U1052-CNRS UMR5286, Université de Lyon, Centre Léon Bérard, 69008, Lyon, France
- Netris Pharma, Centre Léon Bérard, 69008, Lyon, France
| | - Pauline Vieugué
- Apoptosis, Cancer and Development Laboratory- Equipe labellisée 'La Ligue', Labex DEVweCAN, Institut Convergence PLAsCAN, Centre de Cancérologie de Lyon, INSERM U1052-CNRS UMR5286, Université de Lyon, Centre Léon Bérard, 69008, Lyon, France
| | - David Neves
- Netris Pharma, Centre Léon Bérard, 69008, Lyon, France
| | - Isabelle Goddard
- Apoptosis, Cancer and Development Laboratory- Equipe labellisée 'La Ligue', Labex DEVweCAN, Institut Convergence PLAsCAN, Centre de Cancérologie de Lyon, INSERM U1052-CNRS UMR5286, Université de Lyon, Centre Léon Bérard, 69008, Lyon, France
| | - Mathieu Richaud
- Apoptosis, Cancer and Development Laboratory- Equipe labellisée 'La Ligue', Labex DEVweCAN, Institut Convergence PLAsCAN, Centre de Cancérologie de Lyon, INSERM U1052-CNRS UMR5286, Université de Lyon, Centre Léon Bérard, 69008, Lyon, France
| | - Pierre-Alexandre Laval
- Apoptosis, Cancer and Development Laboratory- Equipe labellisée 'La Ligue', Labex DEVweCAN, Institut Convergence PLAsCAN, Centre de Cancérologie de Lyon, INSERM U1052-CNRS UMR5286, Université de Lyon, Centre Léon Bérard, 69008, Lyon, France
| | - Nicolas Rama
- Apoptosis, Cancer and Development Laboratory- Equipe labellisée 'La Ligue', Labex DEVweCAN, Institut Convergence PLAsCAN, Centre de Cancérologie de Lyon, INSERM U1052-CNRS UMR5286, Université de Lyon, Centre Léon Bérard, 69008, Lyon, France
| | | | - Andrea Paradisi
- Apoptosis, Cancer and Development Laboratory- Equipe labellisée 'La Ligue', Labex DEVweCAN, Institut Convergence PLAsCAN, Centre de Cancérologie de Lyon, INSERM U1052-CNRS UMR5286, Université de Lyon, Centre Léon Bérard, 69008, Lyon, France
| | - Nicolas Gourdin
- Targeting of the Tumor and its Immune Environnement, Centre de Cancérologie de Lyon, INSERM U1052-CNRS UMR5286, Université de Lyon, Centre Léon Bérard, 69008, Lyon, France
| | | | | | - Nicolas Gadot
- Pathology Department, Centre Léon Bérard, Lyon, France
| | | | | | - Didier Decaudin
- Laboratory of Preclinical Investigations, Translational Research Department, Institut Curie, Université Paris-Sciences-et-Lettres, 75005, Paris, France
| | - Fariba Némati
- Laboratory of Preclinical Investigations, Translational Research Department, Institut Curie, Université Paris-Sciences-et-Lettres, 75005, Paris, France
| | - Elisabetta Marangoni
- Laboratory of Preclinical Investigations, Translational Research Department, Institut Curie, Université Paris-Sciences-et-Lettres, 75005, Paris, France
| | | | | | | | | | - Kathryn J Moore
- Department of Medicine, Leon H. Charney Division of Cardiology, New York University School of Medicine, New York, NY, USA
| | - Benjamin Gibert
- Apoptosis, Cancer and Development Laboratory- Equipe labellisée 'La Ligue', Labex DEVweCAN, Institut Convergence PLAsCAN, Centre de Cancérologie de Lyon, INSERM U1052-CNRS UMR5286, Université de Lyon, Centre Léon Bérard, 69008, Lyon, France.
| | - Patrick Mehlen
- Apoptosis, Cancer and Development Laboratory- Equipe labellisée 'La Ligue', Labex DEVweCAN, Institut Convergence PLAsCAN, Centre de Cancérologie de Lyon, INSERM U1052-CNRS UMR5286, Université de Lyon, Centre Léon Bérard, 69008, Lyon, France.
- Netris Pharma, Centre Léon Bérard, 69008, Lyon, France.
| | - Agnes Bernet
- Apoptosis, Cancer and Development Laboratory- Equipe labellisée 'La Ligue', Labex DEVweCAN, Institut Convergence PLAsCAN, Centre de Cancérologie de Lyon, INSERM U1052-CNRS UMR5286, Université de Lyon, Centre Léon Bérard, 69008, Lyon, France.
- Netris Pharma, Centre Léon Bérard, 69008, Lyon, France.
| |
Collapse
|
5
|
Kryza D, Wischhusen J, Richaud M, Hervieu M, Sidi Boumedine J, Delcros JG, Besse S, Baudier T, Laval PA, Breusa S, Boutault E, Clermidy H, Rama N, Ducarouge B, Devouassoux-Shisheboran M, Chezal JM, Giraudet AL, Walter T, Mehlen P, Sarrut D, Gibert B. From netrin-1-targeted SPECT/CT to internal radiotherapy for management of advanced solid tumors. EMBO Mol Med 2023; 15:e16732. [PMID: 36876343 PMCID: PMC10086585 DOI: 10.15252/emmm.202216732] [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: 09/06/2022] [Revised: 02/08/2023] [Accepted: 02/10/2023] [Indexed: 03/07/2023] Open
Abstract
Targeted radionuclide therapy is a revolutionary tool for the treatment of highly spread metastatic cancers. Most current approaches rely on the use of vectors to deliver radionuclides to tumor cells, targeting membrane-bound cancer-specific moieties. Here, we report the embryonic navigation cue netrin-1 as an unanticipated target for vectorized radiotherapy. While netrin-1, known to be re-expressed in tumoral cells to promote cancer progression, is usually characterized as a diffusible ligand, we demonstrate here that netrin-1 is actually poorly diffusible and bound to the extracellular matrix. A therapeutic anti-netrin-1 monoclonal antibody (NP137) has been preclinically developed and was tested in various clinical trials showing an excellent safety profile. In order to provide a companion test detecting netrin-1 in solid tumors and allowing the selection of therapy-eligible patients, we used the clinical-grade NP137 agent and developed an indium-111-NODAGA-NP137 single photon emission computed tomography (SPECT) contrast agent. NP137-111 In provided specific detection of netrin-1-positive tumors with an excellent signal-to-noise ratio using SPECT/CT imaging in different mouse models. The high specificity and strong affinity of NP137 paved the way for the generation of lutetium-177-DOTA-NP137, a novel vectorized radiotherapy, which specifically accumulated in netrin-1-positive tumors. We demonstrate here, using tumor cell-engrafted mouse models and a genetically engineered mouse model, that a single systemic injection of NP137-177 Lu provides important antitumor effects and prolonged mouse survival. Together, these data support the view that NP137-111 In and NP137-177 Lu may represent original and unexplored imaging and therapeutic tools against advanced solid cancers.
Collapse
Affiliation(s)
- David Kryza
- Imthernat, LAGEPP, CNRS UMR 5007, Université de Lyon, Hospices Civils de Lyon, Lyon, France.,Lumen Nuclear Medicine group, Hospices Civils de Lyon et Centre Léon Bérard, Lyon, France
| | - Jennifer Wischhusen
- Apoptosis, Cancer and Development Laboratory- Equipe labellisée 'La Ligue', LabEx DEVweCAN, Institut Convergence PLAsCAN, Centre de Recherche en Cancérologie de Lyon, INSERM U1052-CNRS 5286, Université de Lyon1, Lyon, France
| | - Mathieu Richaud
- Apoptosis, Cancer and Development Laboratory- Equipe labellisée 'La Ligue', LabEx DEVweCAN, Institut Convergence PLAsCAN, Centre de Recherche en Cancérologie de Lyon, INSERM U1052-CNRS 5286, Université de Lyon1, Lyon, France.,Gastroenterology and technologies for health, Centre de Recherche en Cancérologie de Lyon, INSERM U1052-CNRS5286, Université Lyon 1, Lyon, France
| | - Maëva Hervieu
- Apoptosis, Cancer and Development Laboratory- Equipe labellisée 'La Ligue', LabEx DEVweCAN, Institut Convergence PLAsCAN, Centre de Recherche en Cancérologie de Lyon, INSERM U1052-CNRS 5286, Université de Lyon1, Lyon, France.,Gastroenterology and technologies for health, Centre de Recherche en Cancérologie de Lyon, INSERM U1052-CNRS5286, Université Lyon 1, Lyon, France
| | - Jacqueline Sidi Boumedine
- Imthernat, LAGEPP, CNRS UMR 5007, Université de Lyon, Hospices Civils de Lyon, Lyon, France.,Gastroenterology and technologies for health, Centre de Recherche en Cancérologie de Lyon, INSERM U1052-CNRS5286, Université Lyon 1, Lyon, France
| | - Jean-Guy Delcros
- Small molecules for biological targets, Centre de Recherche en Cancérologie de Lyon. UMR INSERM 1052 - CNRS 5286 ISPB Rockefeller, Lyon, France
| | - Sophie Besse
- Université Clermont Auvergne, Inserm, Imagerie Moléculaire et Stratégies Théranostiques, Clermont-Ferrand, France
| | - Thomas Baudier
- CREATIS, INSA Lyon, INSERM U1206 - CNRS UMR 5220, Université de Lyon, Lyon, France
| | - Pierre-Alexandre Laval
- Apoptosis, Cancer and Development Laboratory- Equipe labellisée 'La Ligue', LabEx DEVweCAN, Institut Convergence PLAsCAN, Centre de Recherche en Cancérologie de Lyon, INSERM U1052-CNRS 5286, Université de Lyon1, Lyon, France
| | - Silvia Breusa
- Imthernat, LAGEPP, CNRS UMR 5007, Université de Lyon, Hospices Civils de Lyon, Lyon, France.,Apoptosis, Cancer and Development Laboratory- Equipe labellisée 'La Ligue', LabEx DEVweCAN, Institut Convergence PLAsCAN, Centre de Recherche en Cancérologie de Lyon, INSERM U1052-CNRS 5286, Université de Lyon1, Lyon, France.,Gastroenterology and technologies for health, Centre de Recherche en Cancérologie de Lyon, INSERM U1052-CNRS5286, Université Lyon 1, Lyon, France
| | - Erwan Boutault
- Université Clermont Auvergne, Inserm, Imagerie Moléculaire et Stratégies Théranostiques, Clermont-Ferrand, France
| | - Hugo Clermidy
- Apoptosis, Cancer and Development Laboratory- Equipe labellisée 'La Ligue', LabEx DEVweCAN, Institut Convergence PLAsCAN, Centre de Recherche en Cancérologie de Lyon, INSERM U1052-CNRS 5286, Université de Lyon1, Lyon, France
| | - Nicolas Rama
- Apoptosis, Cancer and Development Laboratory- Equipe labellisée 'La Ligue', LabEx DEVweCAN, Institut Convergence PLAsCAN, Centre de Recherche en Cancérologie de Lyon, INSERM U1052-CNRS 5286, Université de Lyon1, Lyon, France
| | | | | | - Jean-Michel Chezal
- Université Clermont Auvergne, Inserm, Imagerie Moléculaire et Stratégies Théranostiques, Clermont-Ferrand, France
| | - Anne-Laure Giraudet
- Lumen Nuclear Medicine group, Hospices Civils de Lyon et Centre Léon Bérard, Lyon, France
| | - Thomas Walter
- Apoptosis, Cancer and Development Laboratory- Equipe labellisée 'La Ligue', LabEx DEVweCAN, Institut Convergence PLAsCAN, Centre de Recherche en Cancérologie de Lyon, INSERM U1052-CNRS 5286, Université de Lyon1, Lyon, France.,Gastroenterology and technologies for health, Centre de Recherche en Cancérologie de Lyon, INSERM U1052-CNRS5286, Université Lyon 1, Lyon, France.,Hospices Civils de Lyon, Hôpital Edouard Herriot, Service de Gastroentérologie et d'Oncologie Digestive, Lyon Cedex 03, France
| | - Patrick Mehlen
- Apoptosis, Cancer and Development Laboratory- Equipe labellisée 'La Ligue', LabEx DEVweCAN, Institut Convergence PLAsCAN, Centre de Recherche en Cancérologie de Lyon, INSERM U1052-CNRS 5286, Université de Lyon1, Lyon, France
| | - David Sarrut
- CREATIS, INSA Lyon, INSERM U1206 - CNRS UMR 5220, Université de Lyon, Lyon, France
| | - Benjamin Gibert
- Apoptosis, Cancer and Development Laboratory- Equipe labellisée 'La Ligue', LabEx DEVweCAN, Institut Convergence PLAsCAN, Centre de Recherche en Cancérologie de Lyon, INSERM U1052-CNRS 5286, Université de Lyon1, Lyon, France.,Gastroenterology and technologies for health, Centre de Recherche en Cancérologie de Lyon, INSERM U1052-CNRS5286, Université Lyon 1, Lyon, France
| |
Collapse
|
6
|
Chaudhari S, Yazdizadeh Shotorbani P, Tao Y, Kasetti R, Zode G, Mathis KW, Ma R. Neogenin pathway positively regulates fibronectin production by glomerular mesangial cells. Am J Physiol Cell Physiol 2022; 323:C226-C235. [PMID: 35704698 DOI: 10.1152/ajpcell.00359.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Neogenin, a transmembrane receptor, was recently found in kidney cells and immune cells. However, the function of neogenin signaling in kidney is not clear. Mesangial cells (MCs) are a major source of extracellular matrix (ECM) proteins in glomerulus. In many kidney diseases, MCs are impaired and manifest myofibroblast phenotype. Over production of ECM by the injured MCs promotes renal injury and accelerates the progression of kidney diseases. The present study was aimed to determine if neogenin receptor was expressed in MCs and if the receptor signaling regulated ECM protein production by MCs. We showed that neogenin was expressed in the glomerular MCs. Deletion of neogenin using CRISPR/Cas9 lentivirus system, significantly reduced the abundance of fibronectin, an ECM protein. Netrin-1, a ligand for neogenin, also significantly decreased fibronectin production by MCs and decreased neogenin protein expression in MCs. Furthermore, treatment of human MCs with high glucose (25 mM) significantly increased the protein abundance of neogenin as early as 8 h. Consistently, neogenin expression in glomerulus significantly increased in the eNOS-/- db/db diabetic mice starting as early as the age of 8 weeks and this increase sustained at least to the age of 24 weeks. We further found that the HG induced increase in neogenin abundance was blunted by antioxidant PEG-catalase and N-acetyl cysteine. Taken together, our results suggest a new mechanism of regulation of fibronectin production by MCs. This previously unrecognized neogenin-fibronectin pathway may contribute to glomerular injury responses during the course of diabetic nephropathy.
Collapse
Affiliation(s)
- Sarika Chaudhari
- Dept. of Physiology and Anatomy, University of North Texas Health Science Center, Fort Worth, TX, United States
| | | | - Yu Tao
- Dept. of Physiology and Anatomy, University of North Texas Health Science Center, Fort Worth, TX, United States
| | - Ramesh Kasetti
- The North Texas Eye Research Institute and Dept. of Pharmacology and Neuroscience, University of North Texas Health Science Center, Fort Worth, United States
| | - Gulab Zode
- The North Texas Eye Research Institute and Dept. of Pharmacology and Neuroscience, University of North Texas Health Science Center, Fort Worth, United States
| | - Keisa W Mathis
- Dept. of Physiology and Anatomy, University of North Texas Health Science Center, Fort Worth, TX, United States
| | - Rong Ma
- Dept. of Physiology and Anatomy, University of North Texas Health Science Center, Fort Worth, TX, United States
| |
Collapse
|
7
|
Spinal TRPA1 Contributes to the Mechanical Hypersensitivity Effect Induced by Netrin-1. Int J Mol Sci 2022; 23:ijms23126629. [PMID: 35743067 PMCID: PMC9224357 DOI: 10.3390/ijms23126629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 06/10/2022] [Accepted: 06/12/2022] [Indexed: 02/06/2023] Open
Abstract
Netrin-1, a chemoattractant expressed by floor plate cells, and one of its receptors (deleted in colorectal cancer) has been associated with pronociceptive actions in a number of pain conditions. Here, we addressed the question of whether spinal TRPC4/C5 or TRPA1 are among the downstream receptors contributing to pronociceptive actions induced by netrin-1. The experiments were performed on rats using a chronic intrathecal catheter for administration of netrin-1 and antagonists of TRPC4/C5 or TRPA1. Pain sensitivity was assessed behaviorally by using mechanical and heat stimuli. Effect on the discharge rate of rostral ventromedial medullary (RVM) pain control neurons was studied in lightly anesthetized animals. Netrin-1, in a dose-related fashion, induced mechanical hypersensitivity that lasted up to three weeks. Netrin-1 had no effect on heat nociception. Mechanical hypersensitivity induced by netrin-1 was attenuated by TRPA1 antagonist Chembridge-5861528 and by the control analgesic compound pregabalin both during the early (first two days) and late (third week) phase of hypersensitivity. TRPC4/C5 antagonist ML-204 had a weak antihypersensitivity effect that was only in the early phase, whereas TRPC4/C5 antagonist HC-070 had no effect on hypersensitivity induced by netrin-1. The discharge rate in pronociceptive ON-like RVM neurons was increased by netrin-1 during the late but not acute phase, whereas netrin-1 had no effect on the discharge rate of antinociceptive RVM OFF-like neurons. The results suggest that spinal TRPA1 receptors and pronociceptive RVM ON-like neurons are involved in the maintenance of submodality-selective pronociceptive actions induced by netrin-1 in the spinal cord.
Collapse
|
8
|
Romhányi D, Szabó K, Kemény L, Sebestyén E, Groma G. Transcriptional Analysis-Based Alterations Affecting Neuritogenesis of the Peripheral Nervous System in Psoriasis. Life (Basel) 2022; 12:111. [PMID: 35054504 PMCID: PMC8778302 DOI: 10.3390/life12010111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 01/03/2022] [Accepted: 01/04/2022] [Indexed: 11/17/2022] Open
Abstract
An increasing amount of evidence indicates the critical role of the cutaneous nervous system in the initiation and maintenance of psoriatic skin lesions by neurogenic inflammation. However, molecular mechanisms affecting cutaneous neurons are largely uncharacterized. Therefore, we reanalyzed a psoriatic RNA sequencing dataset from published transcriptome experiments of nearly 300 individuals. Using the Ingenuity Pathway Analysis software, we associated several hundreds of differentially expressed transcripts (DETs) to nervous system development and functions. Since neuronal projections were previously reported to be affected in psoriasis, we performed an in-depth analysis of neurite formation-related process. Our in silico analysis suggests that SEMA-PLXN and ROBO-DCC-UNC5 regulating axonal growth and repulsion are differentially affected in non-lesional and lesional skin samples. We identified opposing expressional alterations in secreted ligands for axonal guidance signaling (RTN4/NOGOA, NTNs, SEMAs, SLITs) and non-conventional axon guidance regulating ligands, including WNT5A and their receptors, modulating axon formation. These differences in neuritogenesis may explain the abnormal cutaneous nerve filament formation described in psoriatic skin. The processes also influence T-cell activation and infiltration, thus highlighting an additional angle of the crosstalk between the cutaneous nervous system and the immune responses in psoriasis pathogenesis, in addition to the known neurogenic pro-inflammatory mediators.
Collapse
Affiliation(s)
- Dóra Romhányi
- Department of Dermatology and Allergology, University of Szeged, H-6720 Szeged, Hungary; (D.R.); (K.S.); (L.K.)
| | - Kornélia Szabó
- Department of Dermatology and Allergology, University of Szeged, H-6720 Szeged, Hungary; (D.R.); (K.S.); (L.K.)
- Hungarian Centre of Excellence for Molecular Medicine-University of Szeged Skin Research Group (HCEMM-USZ Skin Research Group), University of Szeged, H-6720 Szeged, Hungary
- Eötvös Loránd Research Network, MTA-SZTE Dermatological Research Group, H-6720 Szeged, Hungary
| | - Lajos Kemény
- Department of Dermatology and Allergology, University of Szeged, H-6720 Szeged, Hungary; (D.R.); (K.S.); (L.K.)
- Hungarian Centre of Excellence for Molecular Medicine-University of Szeged Skin Research Group (HCEMM-USZ Skin Research Group), University of Szeged, H-6720 Szeged, Hungary
- Eötvös Loránd Research Network, MTA-SZTE Dermatological Research Group, H-6720 Szeged, Hungary
| | - Endre Sebestyén
- 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, H-1085 Budapest, Hungary;
| | - Gergely Groma
- Department of Dermatology and Allergology, University of Szeged, H-6720 Szeged, Hungary; (D.R.); (K.S.); (L.K.)
- Eötvös Loránd Research Network, MTA-SZTE Dermatological Research Group, H-6720 Szeged, Hungary
| |
Collapse
|
9
|
Netrin-1: An Emerging Player in Inflammatory Diseases. Cytokine Growth Factor Rev 2022; 64:46-56. [DOI: 10.1016/j.cytogfr.2022.01.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 01/12/2022] [Indexed: 12/14/2022]
|
10
|
Vásquez X, Sánchez-Gómez P, Palma V. Netrin-1 in Glioblastoma Neovascularization: The New Partner in Crime? Int J Mol Sci 2021; 22:8248. [PMID: 34361013 PMCID: PMC8348949 DOI: 10.3390/ijms22158248] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 05/13/2021] [Accepted: 05/14/2021] [Indexed: 12/13/2022] Open
Abstract
Glioblastoma (GBM) is the most aggressive and common primary tumor of the central nervous system. It is characterized by having an infiltrating growth and by the presence of an excessive and aberrant vasculature. Some of the mechanisms that promote this neovascularization are angiogenesis and the transdifferentiation of tumor cells into endothelial cells or pericytes. In all these processes, the release of extracellular microvesicles by tumor cells plays an important role. Tumor cell-derived extracellular microvesicles contain pro-angiogenic molecules such as VEGF, which promote the formation of blood vessels and the recruitment of pericytes that reinforce these structures. The present study summarizes and discusses recent data from different investigations suggesting that Netrin-1, a highly versatile protein recently postulated as a non-canonical angiogenic ligand, could participate in the promotion of neovascularization processes in GBM. The relevance of determining the angiogenic signaling pathways associated with the interaction of Netrin-1 with its receptors is posed. Furthermore, we speculate that this molecule could form part of the microvesicles that favor abnormal tumor vasculature. Based on the studies presented, this review proposes Netrin-1 as a novel biomarker for GBM progression and vascularization.
Collapse
Affiliation(s)
- Ximena Vásquez
- Laboratory of Stem Cells and Developmental Biology, Faculty of Sciences, Universidad de Chile, Santiago 7800003, Chile;
| | - Pilar Sánchez-Gómez
- Neurooncology Unit, Unidad Funcional de Investigación de Enfermedades Crónicas (UFIEC), Instituto de Salud Carlos III (ISCIII), 28220 Madrid, Spain
| | - Verónica Palma
- Laboratory of Stem Cells and Developmental Biology, Faculty of Sciences, Universidad de Chile, Santiago 7800003, Chile;
| |
Collapse
|
11
|
Del Corvo M, Lazzari B, Capra E, Zavarez L, Milanesi M, Utsunomiya YT, Utsunomiya ATH, Stella A, de Paula Nogueira G, Garcia JF, Ajmone-Marsan P. Methylome Patterns of Cattle Adaptation to Heat Stress. Front Genet 2021; 12:633132. [PMID: 34122501 PMCID: PMC8194315 DOI: 10.3389/fgene.2021.633132] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 05/04/2021] [Indexed: 12/13/2022] Open
Abstract
Heat stress has a detrimental impact on cattle health, welfare and productivity by affecting gene expression, metabolism and immune response, but little is known on the epigenetic mechanisms mediating the effect of temperature at the cellular and organism level. In this study, we investigated genome-wide DNA methylation in blood samples collected from 5 bulls of the heat stress resilient Nellore breed and 5 bulls of the Angus that are more heat stress susceptible, exposed to the sun and high temperature-high humidity during the summer season of the Brazilian South-East region. The methylomes were analyzed during and after the exposure by Reduced Representation Bisulfite Sequencing, which provided genome-wide single-base resolution methylation profiles. Significant methylation changes between stressful and recovery periods were observed in 819 genes. Among these, 351 were only seen in Angus, 366 were specific to Nellore, and 102 showed significant changes in methylation patterns in both breeds. KEGG and Gene Ontology (GO) enrichment analyses showed that responses were breed-specific. Interestingly, in Nellore significant genes and pathways were mainly involved in stress responses and cellular defense and were under methylated during heat stress, whereas in Angus the response was less focused. These preliminary results suggest that heat challenge induces changes in methylation patterns in specific loci, which should be further scrutinized to assess their role in heat tolerance.
Collapse
Affiliation(s)
- Marcello Del Corvo
- Department of Animal Science Food and Nutrition - DIANA, Nutrigenomics and Proteomics Research Centre - PRONUTRIGEN, and Biodiversity and Ancient DNA Research Centre, Università Cattolica del Sacro Cuore, Piacenza, Italy.,Istituto di Biologia e Biotecnologia Agraria, Consiglio Nazionale delle Ricerche IBBA CNR, Milan, Italy
| | - Barbara Lazzari
- Istituto di Biologia e Biotecnologia Agraria, Consiglio Nazionale delle Ricerche IBBA CNR, Milan, Italy
| | - Emanuele Capra
- Istituto di Biologia e Biotecnologia Agraria, Consiglio Nazionale delle Ricerche IBBA CNR, Milan, Italy
| | - Ludmilla Zavarez
- School of Veterinary Medicine, Araçatuba, Department of Production and Animal Health, São Paulo State University (unesp), Araçatuba, Brazil.,International Atomic Energy Agency, Collaborating Centre on Animal Genomics and Bioinformatics, Araçatuba, Brazil
| | - Marco Milanesi
- School of Veterinary Medicine, Araçatuba, Department of Production and Animal Health, São Paulo State University (unesp), Araçatuba, Brazil.,International Atomic Energy Agency, Collaborating Centre on Animal Genomics and Bioinformatics, Araçatuba, Brazil
| | - Yuri Tani Utsunomiya
- School of Veterinary Medicine, Araçatuba, Department of Production and Animal Health, São Paulo State University (unesp), Araçatuba, Brazil.,International Atomic Energy Agency, Collaborating Centre on Animal Genomics and Bioinformatics, Araçatuba, Brazil
| | - Adam Taiti Harth Utsunomiya
- School of Veterinary Medicine, Araçatuba, Department of Production and Animal Health, São Paulo State University (unesp), Araçatuba, Brazil.,International Atomic Energy Agency, Collaborating Centre on Animal Genomics and Bioinformatics, Araçatuba, Brazil
| | - Alessandra Stella
- Istituto di Biologia e Biotecnologia Agraria, Consiglio Nazionale delle Ricerche IBBA CNR, Milan, Italy
| | - Guilherme de Paula Nogueira
- School of Veterinary Medicine, Araçatuba, Department of Production and Animal Health, São Paulo State University (unesp), Araçatuba, Brazil
| | - Josè Fernando Garcia
- School of Veterinary Medicine, Araçatuba, Department of Production and Animal Health, São Paulo State University (unesp), Araçatuba, Brazil.,International Atomic Energy Agency, Collaborating Centre on Animal Genomics and Bioinformatics, Araçatuba, Brazil
| | - Paolo Ajmone-Marsan
- Department of Animal Science Food and Nutrition - DIANA, Nutrigenomics and Proteomics Research Centre - PRONUTRIGEN, and Biodiversity and Ancient DNA Research Centre, Università Cattolica del Sacro Cuore, Piacenza, Italy
| |
Collapse
|
12
|
Kang J, Li Y, Zhao Z, Zhang H. Differentiation between thyroid-associated orbitopathy and Graves' disease by iTRAQ-based quantitative proteomic analysis. FEBS Open Bio 2021; 11:1930-1940. [PMID: 33934566 PMCID: PMC8255837 DOI: 10.1002/2211-5463.13172] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 03/17/2021] [Indexed: 11/12/2022] Open
Abstract
Graves' ophthalmopathy, also known as thyroid-associated orbitopathy (TAO), is the most common inflammatory eye disease in adults. The most common etiology for TAO is Graves' disease (GD); however, proteomic research focusing on differences between GD and TAO is limited. This study aimed to identify differentially expressed proteins between thyroid-associated orbitopathy (TAO) and GD. Furthermore, we sought to explore the pathogenesis of TAO and elucidate the differentiation process via specific markers. Serum samples of three patients with TAO, GD, and healthy controls, respectively, were collected. These samples were measured using the iTRAQ technique coupled with mass spectrometry. Differentially expressed proteins in TAO and GD were identified by proteomics; 3172 quantified proteins were identified. Compared with TAO, we identified 110 differential proteins (27 proteins were upregulated and 83 were downregulated). In addition, these differentially expressed proteins were closely associated with cellular processes, metabolic processes, macromolecular complexes, signal transduction, and the immune system. The corresponding functions were protein, calcium ion, and nucleic acid binding. Among the differential proteins, MYH11, P4HB, and C4A were markedly upregulated in TAO patients and have been reported to participate in apoptosis, autophagy, the inflammatory response, and the immune system. A protein-protein interaction network analysis was performed. Proteomics demonstrated valuable large-scale protein-related information for expounding the pathogenic mechanism underlying TAO. This research provides new insights and potential targets for studying GD with TAO.
Collapse
Affiliation(s)
- Jianshu Kang
- Department of Ophthalmology, The Second People's Hospital of Yunnan Province, The Fourth Affiliated Hospital of Kunming Medical University, China.,Yunnan Eye Institute, Kunming, China.,Key Laboratory of Yunnan Province for the Prevention and Treatment of Ophthalmologya, Kunming, China.,Yunnan Eye Disease Clinical Medical Center, Kunming, China.,Yunnan Eye Disease Clinical Medical Research Center, Kunming, China
| | - Yunqin Li
- Department of Ophthalmology, The Second People's Hospital of Yunnan Province, The Fourth Affiliated Hospital of Kunming Medical University, China.,Yunnan Eye Institute, Kunming, China.,Key Laboratory of Yunnan Province for the Prevention and Treatment of Ophthalmologya, Kunming, China.,Yunnan Eye Disease Clinical Medical Center, Kunming, China.,Yunnan Eye Disease Clinical Medical Research Center, Kunming, China
| | - Zhijian Zhao
- Department of Ophthalmology, The Second People's Hospital of Yunnan Province, The Fourth Affiliated Hospital of Kunming Medical University, China.,Yunnan Eye Institute, Kunming, China.,Key Laboratory of Yunnan Province for the Prevention and Treatment of Ophthalmologya, Kunming, China.,Yunnan Eye Disease Clinical Medical Center, Kunming, China.,Yunnan Eye Disease Clinical Medical Research Center, Kunming, China
| | - Hong Zhang
- Department of Ophthalmology, The Second People's Hospital of Yunnan Province, The Fourth Affiliated Hospital of Kunming Medical University, China.,Yunnan Eye Institute, Kunming, China.,Key Laboratory of Yunnan Province for the Prevention and Treatment of Ophthalmologya, Kunming, China.,Yunnan Eye Disease Clinical Medical Center, Kunming, China.,Yunnan Eye Disease Clinical Medical Research Center, Kunming, China
| |
Collapse
|
13
|
Naito T, Yuge R, Kitadai Y, Takigawa H, Higashi Y, Kuwai T, Kuraoka K, Tanaka S, Chayama K. Mesenchymal stem cells induce tumor stroma formation and epithelial‑mesenchymal transition through SPARC expression in colorectal cancer. Oncol Rep 2021; 45:104. [PMID: 33907853 PMCID: PMC8072806 DOI: 10.3892/or.2021.8055] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Accepted: 02/09/2021] [Indexed: 12/18/2022] Open
Abstract
Tumor-stroma interactions serve a crucial role in the development of colorectal cancer (CRC), in which secreted protein acidic and rich in cysteine (SPARC) has been implicated. Due to interactions between cancer and stromal cells [mesenchymal stem cells (MSCs)], SPARC gene expression is markedly upregulated in CRC cells. The present study investigated the role of SPARC in CRC development and its potential as a biomarker. Specifically, the present study examined the association between SPARC expression and clinicopathological characteristics in 42 cases of CRC. SPARC expression in cancer cells was associated with T grade, N grade (TNM classification), stage and poor prognosis. Furthermore, the area of fibroblast-activating protein-positive staining around the cancer cells was increased in SPARC-positive compared with SPARC-negative cases. Proliferation and wound healing assays in SPARC-silenced KM12SM cells [short hairpin RNA SPARC (shSPARC)], the reduced SPARC expression of which was demonstrated by reverse transcription-quantitative PCR, revealed that the proliferative and migratory capacity of shSPARC cells did not differ from that of wild-type (WT) cells. However, it was markedly reduced when co-cultured with MSCs. Furthermore, in vivo, immunohistological analysis and RNA sequencing were conducted in an orthotopic implanted mouse model. Tumor growth and lymph node metastasis were markedly suppressed in shSPARC-transplanted tumors compared with WT-transplanted tumors, with a more marked suppression observed following shSPARC co-transplantation with MSCs. Immunohistological examination further revealed that the stromal reaction and epithelial-mesenchymal transition (EMT) were markedly suppressed in tumors co-transplanted with shSPARC and MSCs, and these results were consistent with RNA sequencing using RNA extracted from orthotopic tumors. Overall, these results suggested that SPARC expression in CRC cells is dependent on the interaction between cancer cells and stromal cells to induce EMT and promote stromal formation in the tumor microenvironment, suggesting its suitability as a novel target molecule for CRC treatment.
Collapse
Affiliation(s)
- Toshikatsu Naito
- Department of Gastroenterology and Metabolism, Hiroshima University, Hiroshima 734‑8551, Japan
| | - Ryo Yuge
- Department of Endoscopy and Medicine, Hiroshima University, Hiroshima 734‑8551, Japan
| | - Yasuhiko Kitadai
- Department of Health Science, Prefectural University of Hiroshima, Hiroshima 734‑8558, Japan
| | - Hidehiko Takigawa
- Department of Gastroenterology and Metabolism, Hiroshima University, Hiroshima 734‑8551, Japan
| | - Yukihito Higashi
- Department of Cardiovascular Physiology and Medicine, Hiroshima University, Hiroshima 734‑8551, Japan
| | - Toshio Kuwai
- Department of Gastroenterology, National Hospital Organization Kure Medical Center, Hiroshima 737‑0023, Japan
| | - Kazuya Kuraoka
- Department of Pathology, National Hospital Organization Kure Medical Center, Hiroshima 737‑0023, Japan
| | - Shinji Tanaka
- Department of Endoscopy and Medicine, Hiroshima University, Hiroshima 734‑8551, Japan
| | - Kazuaki Chayama
- Department of Gastroenterology and Metabolism, Hiroshima University, Hiroshima 734‑8551, Japan
| |
Collapse
|
14
|
Kamianowska M, Szczepański M, Kulikowska EE, Bebko B, Koput A, Wasilewska A. Urinary netrin-1 concentration in healthy full-term newborns. Arch Med Sci 2021; 17:47-52. [PMID: 33488855 PMCID: PMC7811309 DOI: 10.5114/aoms/89591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 03/28/2018] [Indexed: 12/02/2022] Open
Abstract
INTRODUCTION Monitoring of renal function in acute kidney injury in the pediatric population is complicated by the lack of age-related reference values of new biomarkers. Urinary netrin-1 is a new marker to demonstrate early kidney damage. Netrin-1 has a molecular mass of 72 kDa. It is therefore unlikely that it is filtered by the glomerulus under normal conditions. However, netrin-1 is highly induced after acute and chronic kidney injury and excreted in urine in humans. The aim of the study was to determine the normal concentrations of urinary netrin-1 in healthy full-term newborns. MATERIAL AND METHODS The study included 88 healthy full-term neonates (51 boys and 37 girls) born from normal, uncomplicated pregnancies. The concentration of netrin-1 was determined in urine obtained on the first or second day of life with a commercially available ELISA kit. RESULTS The urinary concentration of netrin-1 in newborns was independent of gender and time of urine collection. We found a negative correlation between both the urinary netrin-1 concentration and urinary netrin-1 concentration after normalization for urinary creatinine and the birth weight. CONCLUSIONS This is the first study showing the urinary netrin-1 concentration in healthy full-term newborns. Future investigation is needed to confirm its potential role as a marker of kidney function in this age group.
Collapse
Affiliation(s)
- Monika Kamianowska
- Department of Neonatology and Neonatal Intensive Care, Medical University of Bialystok, Bialystok, Poland
| | - Marek Szczepański
- Department of Neonatology and Neonatal Intensive Care, Medical University of Bialystok, Bialystok, Poland
| | - Elżbieta E. Kulikowska
- Department of Neonatology and Neonatal Intensive Care, Medical University of Bialystok, Bialystok, Poland
| | - Barbara Bebko
- Department of Neonatology and Neonatal Intensive Care, Medical University of Bialystok, Bialystok, Poland
| | - Alicja Koput
- Department of Pediatric Laboratory Diagnostics, Medical University of Bialystok, Bialystok, Poland
| | - Anna Wasilewska
- Department of Pediatrics and Nephrology, Medical University of Bialystok, Bialystok, Poland
| |
Collapse
|
15
|
How Have Leukocyte In Vitro Chemotaxis Assays Shaped Our Ideas about Macrophage Migration? BIOLOGY 2020; 9:biology9120439. [PMID: 33276594 PMCID: PMC7761587 DOI: 10.3390/biology9120439] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 11/27/2020] [Accepted: 11/30/2020] [Indexed: 12/15/2022]
Abstract
Simple Summary The migration of immune cells is vital during inflammatory responses. Macrophages, which are a subset of immune cells, are unique in the ways they migrate because they can switch between different mechanism of migration. This crucial feature of macrophage migration has been underappreciated in the literature because technologies used to study macrophage migration were not able to efficiently detect those subtle differences between macrophages and other immune cells. This review article describes popular technologies used to study macrophage migration and critically assesses their advantages and disadvantages in macrophage migration studies. Abstract Macrophage chemotaxis is crucial during both onset and resolution of inflammation and unique among all leukocytes. Macrophages are able to switch between amoeboid and mesenchymal migration to optimise their migration through 3D environments. This subtle migration phenotype has been underappreciated in the literature, with macrophages often being grouped and discussed together with other leukocytes, possibly due to the limitations of current chemotaxis assays. Transwell assays were originally designed in the 1960s but despite their long-known limitations, they are still one of the most popular methods of studying macrophage migration. This review aims to critically evaluate transwell assays, and other popular chemotaxis assays, comparing their advantages and limitations in macrophage migration studies.
Collapse
|
16
|
Jensen ET, Langefeld CD, Zimmerman KD, Howard TD, Dellon ES. Epigenetic methylation in Eosinophilic Esophagitis: Molecular ageing and novel biomarkers for treatment response. Clin Exp Allergy 2020; 50:1372-1380. [PMID: 32986922 DOI: 10.1111/cea.13748] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 09/09/2020] [Accepted: 09/20/2020] [Indexed: 01/16/2023]
Abstract
BACKGROUND Treatment failure in eosinophilic esophagitis (EoE) is common. We hypothesize that DNA methylation differs between patients by treatment response to topical steroids (oral viscous budesonide), thus offering the potential to inform targeting therapies. OBJECTIVE We sought to identify differentially methylated sites and affiliated genes in pre-treatment oesophageal cells between responders and non-responders and test for accelerated epigenetic ageing in oesophageal cells of EoE patients. METHODS DNA was extracted from prospectively collected and biobanked oesophageal biopsies from 36 Caucasian treatment naïve EoE patients at diagnosis. Methylation assays were completed using the Infinium HumanMethylation450 BeadChip. Normalized β values for each CpG site were tested (t test) for differential methylation. Further, 353 CpG probes were used to estimate epigenetic age for each patient and a linear regression model tested whether chronologic age and epigenetic age differed. Epigenetic age results were confirmed in an independent cohort of healthy controls. RESULTS Eighteen CpG sites were differentially methylated by treatment response (P < .00001). The mean epigenetic age and chronological age were 56.1 ± 11.1 and 36.7 ± 12.3 years, a mean age difference of 19.3 ± 5.2 years (P < .0001); accelerated ageing was not observed in the oesophageal cells of healthy controls. CONCLUSIONS AND CLINICAL RELEVANCE EoE patients that respond versus do not respond to treatment have differences in their methylation profile, including enrichment of genes in pathways consistent with cellular injury and repair due to environmental stress and cell adhesion and barrier integrity. EoE also appears to accelerate cellular ageing. Whether treatment can arrest or reverse accelerated epigenetic ageing and the implications for long-term disease progression is important areas for future research.
Collapse
Affiliation(s)
- Elizabeth T Jensen
- Department of Epidemiology and Prevention, Wake Forest School of Medicine, Winston-Salem, NC, USA
- Division of Gastroenterology and Hepatology, Department of Medicine, University of North Carolina School of Medicine, Chapel Hill, NC, USA
- Department of Internal Medicine, Section on Gastroenterology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Carl D Langefeld
- Department of Biostatistics and Data Science, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Kip D Zimmerman
- Department of Biostatistics and Data Science, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Timothy D Howard
- Department of Biochemistry, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Evan S Dellon
- Division of Gastroenterology and Hepatology, Department of Medicine, University of North Carolina School of Medicine, Chapel Hill, NC, USA
| |
Collapse
|
17
|
Claro V, Ferro A. Netrin-1: Focus on its role in cardiovascular physiology and atherosclerosis. JRSM Cardiovasc Dis 2020; 9:2048004020959574. [PMID: 33282228 PMCID: PMC7691900 DOI: 10.1177/2048004020959574] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 08/27/2020] [Indexed: 01/22/2023] Open
Abstract
The netrins form a family of laminin-related proteins which were first
described as modulators of cell migration and axonal guidance during
fetal development. Netrin-1 is the most extensively studied member of
this family and, since its discovery, non-neural roles have been
associated with it. Together with its receptors, DCC/neogenin and
UNC5, netrin-1 has been shown to be involved in the regulation of
angiogenesis, organogenesis, cancer and inflammation. An
NF-κB-dependent truncated isoform of netrin-1 has also been shown to
be produced in endothelial and some types of cancer cells, which both
accumulates in and affects the function of the nucleus. In
atherosclerosis, conflicting roles for netrin-1 have been reported on
plaque progression via its receptor UNC5b. Whereas endothelial-derived
netrin-1 inhibits chemotaxis of leukocytes and reduces the migration
of monocytes to the atherosclerotic plaque, netrin-1 expressed by
macrophages within the plaque plays a pro-atherogenic role, promoting
cell survival, recruiting smooth muscle cells and inhibiting foam cell
egress to the lymphatic system. In contrast, there is evidence that
netrin-1 promotes macrophage differentiation to an alternative
activated phenotype and induces expression of IL-4 and IL-13, while
downregulate expression of IL-6 and COX-2. Further work is needed to
elucidate the precise roles of the two isoforms of netrin-1 in
different cell types in the context of atherosclerosis, and its
potential as a putative novel therapeutic target in this disease.
Collapse
Affiliation(s)
- Vasco Claro
- School of Cardiovascular Medicine and Sciences, British Heart Foundation Centre of Research Excellence, King's College London, London, UK
| | - Albert Ferro
- School of Cardiovascular Medicine and Sciences, British Heart Foundation Centre of Research Excellence, King's College London, London, UK
| |
Collapse
|
18
|
Galeano Niño JL, Pageon SV, Tay SS, Colakoglu F, Kempe D, Hywood J, Mazalo JK, Cremasco J, Govendir MA, Dagley LF, Hsu K, Rizzetto S, Zieba J, Rice G, Prior V, O'Neill GM, Williams RJ, Nisbet DR, Kramer B, Webb AI, Luciani F, Read MN, Biro M. Cytotoxic T cells swarm by homotypic chemokine signalling. eLife 2020; 9:56554. [PMID: 33046212 PMCID: PMC7669268 DOI: 10.7554/elife.56554] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 09/27/2020] [Indexed: 12/30/2022] Open
Abstract
Cytotoxic T lymphocytes (CTLs) are thought to arrive at target sites either via random search or following signals by other leukocytes. Here, we reveal independent emergent behaviour in CTL populations attacking tumour masses. Primary murine CTLs coordinate their migration in a process reminiscent of the swarming observed in neutrophils. CTLs engaging cognate targets accelerate the recruitment of distant T cells through long-range homotypic signalling, in part mediated via the diffusion of chemokines CCL3 and CCL4. Newly arriving CTLs augment the chemotactic signal, further accelerating mass recruitment in a positive feedback loop. Activated effector human T cells and chimeric antigen receptor (CAR) T cells similarly employ intra-population signalling to drive rapid convergence. Thus, CTLs recognising a cognate target can induce a localised mass response by amplifying the direct recruitment of additional T cells independently of other leukocytes.
Collapse
Affiliation(s)
- Jorge Luis Galeano Niño
- EMBL Australia, Single Molecule Science node, University of New South Wales, Sydney, Australia.,School of Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney, Australia
| | - Sophie V Pageon
- EMBL Australia, Single Molecule Science node, University of New South Wales, Sydney, Australia.,School of Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney, Australia
| | - Szun S Tay
- EMBL Australia, Single Molecule Science node, University of New South Wales, Sydney, Australia.,School of Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney, Australia
| | - Feyza Colakoglu
- EMBL Australia, Single Molecule Science node, University of New South Wales, Sydney, Australia.,School of Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney, Australia
| | - Daryan Kempe
- EMBL Australia, Single Molecule Science node, University of New South Wales, Sydney, Australia.,School of Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney, Australia
| | - Jack Hywood
- Sydney Medical School, The University of Sydney, Sydney, Australia
| | - Jessica K Mazalo
- EMBL Australia, Single Molecule Science node, University of New South Wales, Sydney, Australia.,School of Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney, Australia
| | - James Cremasco
- EMBL Australia, Single Molecule Science node, University of New South Wales, Sydney, Australia.,School of Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney, Australia
| | - Matt A Govendir
- EMBL Australia, Single Molecule Science node, University of New South Wales, Sydney, Australia.,School of Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney, Australia
| | - Laura F Dagley
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia.,Department of Medical Biology, University of Melbourne, Melbourne, Australia
| | - Kenneth Hsu
- Children's Cancer Research Unit, The Children's Hospital at Westmead, Sydney, Australia
| | - Simone Rizzetto
- School of Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney, Australia.,The Kirby Institute for Infection and Immunity in Society, UNSW, Sydney, Australia
| | - Jerzy Zieba
- School of Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney, Australia.,Neuroscience Research Australia (NeuRA), Randwick, Australia
| | - Gregory Rice
- Department of Statistics and Actuarial Science, University of Waterloo, Waterloo, Canada
| | - Victoria Prior
- Children's Cancer Research Unit, The Children's Hospital at Westmead, Sydney, Australia.,Discipline of Child and Adolescent Health, University of Sydney, Sydney, Australia
| | - Geraldine M O'Neill
- Children's Cancer Research Unit, The Children's Hospital at Westmead, Sydney, Australia.,Discipline of Child and Adolescent Health, University of Sydney, Sydney, Australia
| | - Richard J Williams
- Biofab3D, St. Vincent's Hospital, Melbourne, Australia.,Institute for Innovation in Mental and Physical Health and Clinical Translation (iMPACT), School of Medicine, Deakin University, Victoria, Australia
| | - David R Nisbet
- Biofab3D, St. Vincent's Hospital, Melbourne, Australia.,Advanced Biomaterials Lab, Research School of Engineering, ANU, Canberra, Australia
| | - Belinda Kramer
- Children's Cancer Research Unit, The Children's Hospital at Westmead, Sydney, Australia
| | - Andrew I Webb
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia.,Department of Medical Biology, University of Melbourne, Melbourne, Australia
| | - Fabio Luciani
- School of Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney, Australia.,The Kirby Institute for Infection and Immunity in Society, UNSW, Sydney, Australia
| | - Mark N Read
- School of Computer Science, Westmead Initiative, and Charles Perkins Centre, University of Sydney, Sydney, Australia
| | - Maté Biro
- EMBL Australia, Single Molecule Science node, University of New South Wales, Sydney, Australia.,School of Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney, Australia
| |
Collapse
|
19
|
Ma S, Sun S, Li J, Fan Y, Qu J, Sun L, Wang S, Zhang Y, Yang S, Liu Z, Wu Z, Zhang S, Wang Q, Zheng A, Duo S, Yu Y, Belmonte JCI, Chan P, Zhou Q, Song M, Zhang W, Liu GH. Single-cell transcriptomic atlas of primate cardiopulmonary aging. Cell Res 2020; 31:415-432. [PMID: 32913304 PMCID: PMC7483052 DOI: 10.1038/s41422-020-00412-6] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 08/13/2020] [Indexed: 02/06/2023] Open
Abstract
Aging is a major risk factor for many diseases, especially in highly prevalent cardiopulmonary comorbidities and infectious diseases including Coronavirus Disease 2019 (COVID-19). Resolving cellular and molecular mechanisms associated with aging in higher mammals is therefore urgently needed. Here, we created young and old non-human primate single-nucleus/cell transcriptomic atlases of lung, heart and artery, the top tissues targeted by SARS-CoV-2. Analysis of cell type-specific aging-associated transcriptional changes revealed increased systemic inflammation and compromised virus defense as a hallmark of cardiopulmonary aging. With age, expression of the SARS-CoV-2 receptor angiotensin-converting enzyme 2 (ACE2) was increased in the pulmonary alveolar epithelial barrier, cardiomyocytes, and vascular endothelial cells. We found that interleukin 7 (IL7) accumulated in aged cardiopulmonary tissues and induced ACE2 expression in human vascular endothelial cells in an NF-κB-dependent manner. Furthermore, treatment with vitamin C blocked IL7-induced ACE2 expression. Altogether, our findings depict the first transcriptomic atlas of the aged primate cardiopulmonary system and provide vital insights into age-linked susceptibility to SARS-CoV-2, suggesting that geroprotective strategies may reduce COVID-19 severity in the elderly.
Collapse
Affiliation(s)
- Shuai Ma
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.,State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.,Institute for Stem cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China
| | - Shuhui Sun
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.,National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Jiaming Li
- CAS Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, 100101, China.,China National Center for Bioinformation, Beijing, 100101, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yanling Fan
- CAS Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, 100101, China.,China National Center for Bioinformation, Beijing, 100101, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jing Qu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.,Institute for Stem cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Liang Sun
- The MOH Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, Beijing, 100730, China.,NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, Yunnan, 650223, China
| | - Si Wang
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.,Institute for Stem cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China.,Advanced Innovation Center for Human Brain Protection, and National Clinical Research Center for Geriatric Disorders, Xuanwu Hospital Capital Medical University, Beijing, 100053, China
| | - Yiyuan Zhang
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Shanshan Yang
- Advanced Innovation Center for Human Brain Protection, and National Clinical Research Center for Geriatric Disorders, Xuanwu Hospital Capital Medical University, Beijing, 100053, China
| | - Zunpeng Liu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zeming Wu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Sheng Zhang
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Qiaoran Wang
- CAS Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, 100101, China.,China National Center for Bioinformation, Beijing, 100101, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Aihua Zheng
- University of Chinese Academy of Sciences, Beijing, 100049, China.,State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Shuguang Duo
- Laboratory Animal Center, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Yang Yu
- Department of Obstetrics and Gynecology, Center for Reproductive Medicine, Peking University Third Hospital, Beijing, 100191, China.,Stem Cell Research Center, Peking University Third Hospital, Beijing, 100191, China
| | | | - Piu Chan
- Advanced Innovation Center for Human Brain Protection, and National Clinical Research Center for Geriatric Disorders, Xuanwu Hospital Capital Medical University, Beijing, 100053, China
| | - Qi Zhou
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.,Institute for Stem cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Moshi Song
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China. .,Institute for Stem cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China. .,University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Weiqi Zhang
- CAS Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, 100101, China. .,China National Center for Bioinformation, Beijing, 100101, China. .,University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Guang-Hui Liu
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China. .,Institute for Stem cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China. .,National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China. .,University of Chinese Academy of Sciences, Beijing, 100049, China. .,Advanced Innovation Center for Human Brain Protection, and National Clinical Research Center for Geriatric Disorders, Xuanwu Hospital Capital Medical University, Beijing, 100053, China.
| |
Collapse
|
20
|
Kamianowska M, Szczepański M, Wasilewska A. Tubular and Glomerular Biomarkers of Acute Kidney Injury in Newborns. Curr Drug Metab 2019; 20:332-349. [PMID: 30907310 DOI: 10.2174/1389200220666190321142417] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Revised: 02/28/2019] [Accepted: 03/11/2019] [Indexed: 12/16/2022]
Abstract
BACKGROUND Acute Kidney Injury (AKI) is a sudden decrease in kidney function. In the early period, the highest percentage of AKI occurs among newborns hospitalized in the neonatal intensive care units, especially premature neonates. The prognosis of AKI depends on the type and severity of the cause of an injury, the accuracy and the time of diagnosis and treatment. The concentration of serum creatinine is still the main diagnostic test, although it changes in the course of AKI later than glomerular filtration rate GFR. In addition, the reliability of the determination of creatinine level is limited because it depends on many factors. New studies have presented other, more useful laboratory markers of renal function that can be measured in serum and/or in urine. OBJECTIVE The aim of the work was to present the latest data about tubular and glomerular biomarkers of acute kidney injury in newborns. METHODS We undertook a structured search of bibliographic databases for peer-reviewed research literature by using focused review topics. According to the conceptual framework, the main idea of research literature has been summarized and presented in this study. RESULTS The concentrations of some novel biomarkers are higher in serum and/or urine of term and preterm newborns with AKI, especially in the course of perinatal asphyxia. CONCLUSION In this systematic review of the literature, we have highlighted the usefulness of biomarkers in predicting tubular and/or glomerular injury in newborns. However, novel biomarkers need to prove their clinical applicability, accuracy, and cost-effectiveness prior to their implementation in clinical practice.
Collapse
Affiliation(s)
- Monika Kamianowska
- Department of Neonatology and Neonatal Intensive Care, Medical University of Bialystok, Białystok, Poland
| | - Marek Szczepański
- Department of Neonatology and Neonatal Intensive Care, Medical University of Bialystok, Białystok, Poland
| | - Anna Wasilewska
- Department of Pediatrics and Nephrology, Medical University of Bialystok, Białystok, Poland
| |
Collapse
|
21
|
Ewing E, Kular L, Fernandes SJ, Karathanasis N, Lagani V, Ruhrmann S, Tsamardinos I, Tegner J, Piehl F, Gomez-Cabrero D, Jagodic M. Combining evidence from four immune cell types identifies DNA methylation patterns that implicate functionally distinct pathways during Multiple Sclerosis progression. EBioMedicine 2019; 43:411-423. [PMID: 31053557 PMCID: PMC6558224 DOI: 10.1016/j.ebiom.2019.04.042] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 04/15/2019] [Accepted: 04/23/2019] [Indexed: 12/22/2022] Open
Abstract
Background Multiple Sclerosis (MS) is a chronic inflammatory disease and a leading cause of progressive neurological disability among young adults. DNA methylation, which intersects genes and environment to control cellular functions on a molecular level, may provide insights into MS pathogenesis. Methods We measured DNA methylation in CD4+ T cells (n = 31), CD8+ T cells (n = 28), CD14+ monocytes (n = 35) and CD19+ B cells (n = 27) from relapsing-remitting (RRMS), secondary progressive (SPMS) patients and healthy controls (HC) using Infinium HumanMethylation450 arrays. Monocyte (n = 25) and whole blood (n = 275) cohorts were used for validations. Findings B cells from MS patients displayed most significant differentially methylated positions (DMPs), followed by monocytes, while only few DMPs were detected in T cells. We implemented a non-parametric combination framework (omicsNPC) to increase discovery power by combining evidence from all four cell types. Identified shared DMPs co-localized at MS risk loci and clustered into distinct groups. Functional exploration of changes discriminating RRMS and SPMS from HC implicated lymphocyte signaling, T cell activation and migration. SPMS-specific changes, on the other hand, implicated myeloid cell functions and metabolism. Interestingly, neuronal and neurodegenerative genes and pathways were also specifically enriched in the SPMS cluster. Interpretation We utilized a statistical framework (omicsNPC) that combines multiple layers of evidence to identify DNA methylation changes that provide new insights into MS pathogenesis in general, and disease progression, in particular. Fund This work was supported by the Swedish Research Council, Stockholm County Council, AstraZeneca, European Research Council, Karolinska Institutet and Margaretha af Ugglas Foundation.
Collapse
Affiliation(s)
- Ewoud Ewing
- Department of Clinical Neuroscience, Center for Molecular Medicine, Karolinska Institutet, Stockholm 17177, Sweden
| | - Lara Kular
- Department of Clinical Neuroscience, Center for Molecular Medicine, Karolinska Institutet, Stockholm 17177, Sweden
| | - Sunjay J Fernandes
- Unit of Computational Medicine, Department of Medicine, Solna, Center for Molecular Medicine, Karolinska Institutet, Stockholm, 17177, Sweden; Science for Life Laboratory, Solna, Sweden
| | - Nestoras Karathanasis
- Institute of Computer Science, Foundation for Research and Technology-Hellas, Heraklion, Greece; Computational Medicine Center, Thomas Jefferson University, 1020 Locust Street, Philadelphia, PA 19107, USA
| | - Vincenzo Lagani
- Institute of Chemical Biology, Ilia State University, Tbilisi, Georgia; Gnosis Data Analysis PC, Heraklion, Greece
| | - Sabrina Ruhrmann
- Department of Clinical Neuroscience, Center for Molecular Medicine, Karolinska Institutet, Stockholm 17177, Sweden
| | - Ioannis Tsamardinos
- Gnosis Data Analysis PC, Heraklion, Greece; Department of Computer Science, University of Crete, Heraklion, Greece
| | - Jesper Tegner
- Unit of Computational Medicine, Department of Medicine, Solna, Center for Molecular Medicine, Karolinska Institutet, Stockholm, 17177, Sweden; Biological and Environmental Sciences and Engineering Division, Computer, Electrical and Mathematical Sciences and Engineering Division, King Abdullah University of Science and Technology, Saudi Arabia; Science for Life Laboratory, Solna, Sweden
| | - Fredrik Piehl
- Department of Clinical Neuroscience, Center for Molecular Medicine, Karolinska Institutet, Stockholm 17177, Sweden; Center for Neurology, Academic Specialist Clinic, Stockholm Health Services, Stockholm, Sweden
| | - David Gomez-Cabrero
- Unit of Computational Medicine, Department of Medicine, Solna, Center for Molecular Medicine, Karolinska Institutet, Stockholm, 17177, Sweden; Translational Bioinformatics Unit, Navarrabiomed, Complejo Hospitalario de Navarra (CHN), Universidad Pública de Navarra (UPNA), IdiSNA, Pamplona, Spain; Centre for Host Microbiome Interactions, Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, UK
| | - Maja Jagodic
- Department of Clinical Neuroscience, Center for Molecular Medicine, Karolinska Institutet, Stockholm 17177, Sweden.
| |
Collapse
|
22
|
Li L, Huang Y, Gao Y, Shi T, Xu Y, Li H, Hyytiäinen M, Keski-Oja J, Jiang Q, Hu Y, Du Z. EGF/EGFR upregulates and cooperates with Netrin-4 to protect glioblastoma cells from DNA damage-induced senescence. BMC Cancer 2018; 18:1215. [PMID: 30514230 PMCID: PMC6280426 DOI: 10.1186/s12885-018-5056-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 11/07/2018] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND Glioblastoma multiforme (GBM) is the most malignant central nervous system tumor. Alkylating agent, temozolomide (TMZ), is currently the first-line chemotherapeutic agent for GBM. However, the sensitivity of GBM cells to TMZ is affected by many factors. And, several clinic trials, including co-administration of TMZ with other drugs, have failed in successful treatment of GBM. We have previously reported that Netrin-4 (NTN4), a laminin-like axon guidance protein, plays a protective role in GBM cell senescence upon TMZ-triggered DNA damage. However, the master regulator of NTN4 needs further elucidation. Epidermal growth factor/Epidermal growth factor receptor (EGF/EGFR) can modulate the expression of various extracellular matrix related molecules, and prevent DNA damage in GBM cells. In this study, we investigated the relationship between EGF/EGFR signaling and NTN4, and explored their effect on therapeutic efficacy in GBM cells upon TMZ treatment. METHODS Co-expression analysis were performed by using the RNA sequencing data from NIH 934 cell lines and from single cell RNA sequencing data of GBM tumor. The co-expressing genes were used for GO enrichment and signaling pathway enrichment. mRNA expression of the target genes were quantified by qPCR, and cell senescence were investigated by Senescence-Associated Beta-Galactosidase Staining. Protein phosphorylation were observed and analyzed by immunoblotting. The RNA sequencing data and clinical information of TMZ treated patients were extracted from TCGA-glioblastoma project, and then used for Kaplan-Meier survival analysis. RESULTS Analysis of RNA sequencing data revealed a potential co-expression relationship between NTN4 and EGFR. GO enrichment of EGFR-correlated genes indicated that EGFR regulates GBM cells in a manner similar to that in central nervous system development and neural cell differentiation. Pathway analysis suggested that EGFR and its related genes contribute to cell adhesion, extracellular matrix (ECM) organization and caspase related signaling. We also show that EGF stimulates NTN4 expression in GBM cells and cooperates with NTN4 to attenuate GBM cell senescence induced by DNA damage, possibly via AKT and ERK. Clinical analysis showed that co-expression of EGFR and NTN4 significantly predicts poor survival in TMZ-treated GBM patients. CONCLUSIONS This study indicates that EGF/EGFR regulates and cooperates with NTN4 in DNA damage resistance in GBM. Therefore, our findings provide a potential therapeutic target for GBM.
Collapse
Affiliation(s)
- Li Li
- Department of Oncology, the Second Clinical College, Harbin Medical University, Harbin, People's Republic of China
| | - Yulun Huang
- Department of Neurosurgery and Brain and Nerve Research Laboratory, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Yuge Gao
- Department of Oncology, the Second Clinical College, Harbin Medical University, Harbin, People's Republic of China
| | - Tengfei Shi
- Department of Oncology, the Second Clinical College, Harbin Medical University, Harbin, People's Republic of China
| | - Yunyun Xu
- Institute of Pediatrics, Children's Hospital of Soochow University, Suzhou, China
| | - Huini Li
- Departments of Virology and Pathology, Faculty of Medicine, the Haartman Institute, Translational Cancer Biology Research Program and Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Marko Hyytiäinen
- Departments of Virology and Pathology, Faculty of Medicine, the Haartman Institute, Translational Cancer Biology Research Program and Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Jorma Keski-Oja
- Departments of Virology and Pathology, Faculty of Medicine, the Haartman Institute, Translational Cancer Biology Research Program and Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Qiuying Jiang
- Department of Oncology, the Second Clinical College, Harbin Medical University, Harbin, People's Republic of China.
| | - Yizhou Hu
- Departments of Virology and Pathology, Faculty of Medicine, the Haartman Institute, Translational Cancer Biology Research Program and Helsinki University Hospital, University of Helsinki, Helsinki, Finland.
- Present address: Division of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm, Sweden.
| | - Zhimin Du
- Department of pharmacy, the Second Clinical College, Harbin Medical University, Harbin, People's Republic of China.
| |
Collapse
|
23
|
Hadi T, Boytard L, Silvestro M, Alebrahim D, Jacob S, Feinstein J, Barone K, Spiro W, Hutchison S, Simon R, Rateri D, Pinet F, Fenyo D, Adelman M, Moore KJ, Eltzschig HK, Daugherty A, Ramkhelawon B. Macrophage-derived netrin-1 promotes abdominal aortic aneurysm formation by activating MMP3 in vascular smooth muscle cells. Nat Commun 2018; 9:5022. [PMID: 30479344 PMCID: PMC6258757 DOI: 10.1038/s41467-018-07495-1] [Citation(s) in RCA: 96] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 11/06/2018] [Indexed: 12/22/2022] Open
Abstract
Abdominal aortic aneurysms (AAA) are characterized by extensive extracellular matrix (ECM) fragmentation and inflammation. However, the mechanisms by which these events are coupled thereby fueling focal vascular damage are undefined. Here we report through single-cell RNA-sequencing of diseased aorta that the neuronal guidance cue netrin-1 can act at the interface of macrophage-driven injury and ECM degradation. Netrin-1 expression peaks in human and murine aneurysmal macrophages. Targeted deletion of netrin-1 in macrophages protects mice from developing AAA. Through its receptor neogenin-1, netrin-1 induces a robust intracellular calcium flux necessary for the transcriptional regulation and persistent catalytic activation of matrix metalloproteinase-3 (MMP3) by vascular smooth muscle cells. Deficiency in MMP3 reduces ECM damage and the susceptibility of mice to develop AAA. Here, we establish netrin-1 as a major signal that mediates the dynamic crosstalk between inflammation and chronic erosion of the ECM in AAA. Abdominal aortic aneurysms (AAA) are characterized by extensive extracellular matrix degradation. Here Hadi et al. identify a netrin-1/neogenin-based crosstalk between macrophages and vascular smooth muscle cells (VSMCs), leading to the secretion of the matrix metalloproteinase MMP-3 by VSMCs and subsequent matrix degradation in AAA lesions.
Collapse
Affiliation(s)
- Tarik Hadi
- Division of Vascular Surgery, Department of Surgery, New York University Medical Center, New York, NY, 10016, USA
| | - Ludovic Boytard
- Division of Vascular Surgery, Department of Surgery, New York University Medical Center, New York, NY, 10016, USA
| | - Michele Silvestro
- Division of Vascular Surgery, Department of Surgery, New York University Medical Center, New York, NY, 10016, USA
| | - Dornazsadat Alebrahim
- Division of Vascular Surgery, Department of Surgery, New York University Medical Center, New York, NY, 10016, USA
| | - Samson Jacob
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, NY, 10016, USA
| | - Jordyn Feinstein
- Division of Vascular Surgery, Department of Surgery, New York University Medical Center, New York, NY, 10016, USA
| | - Krista Barone
- Division of Vascular Surgery, Department of Surgery, New York University Medical Center, New York, NY, 10016, USA
| | - Wes Spiro
- Leon H. Charney Division of Cardiology, Department of Medicine, New York University School of Medicine, New York, NY, 10016, USA
| | - Susan Hutchison
- Leon H. Charney Division of Cardiology, Department of Medicine, New York University School of Medicine, New York, NY, 10016, USA
| | - Russell Simon
- Division of Vascular Surgery, Department of Surgery, New York University Medical Center, New York, NY, 10016, USA
| | - Debra Rateri
- Department of Physiology and Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY, 40506, USA
| | - Florence Pinet
- University of Lille, Inserm U1167, Institut Pasteur de Lille, 59019, Lille, France
| | - David Fenyo
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, NY, 10016, USA
| | - Mark Adelman
- Division of Vascular Surgery, Department of Surgery, New York University Medical Center, New York, NY, 10016, USA
| | - Kathryn J Moore
- Leon H. Charney Division of Cardiology, Department of Medicine, New York University School of Medicine, New York, NY, 10016, USA
| | - Holger K Eltzschig
- Department of Anesthesiology, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, 77030, USA
| | - Alan Daugherty
- Department of Physiology and Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY, 40506, USA
| | - Bhama Ramkhelawon
- Division of Vascular Surgery, Department of Surgery, New York University Medical Center, New York, NY, 10016, USA. .,Department of Cell Biology, New York University Medical Center, New York, NY, 10016, USA.
| |
Collapse
|
24
|
Nakayama H, Kusumoto C, Nakahara M, Fujiwara A, Higashiyama S. Semaphorin 3F and Netrin-1: The Novel Function as a Regulator of Tumor Microenvironment. Front Physiol 2018; 9:1662. [PMID: 30532711 PMCID: PMC6265511 DOI: 10.3389/fphys.2018.01662] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 11/05/2018] [Indexed: 01/13/2023] Open
Abstract
Axon guidance molecules play an important role in regulating proper neuronal networking during neuronal development. They also have non-neuronal properties, which include angiogenesis, inflammation, and tumor development. Semaphorin 3F (SEMA3F), a member of the class 3 semaphorins, was initially identified as an axon guidance factor, that repels axons and collapses growth cones. However, SEMA3F has similar effects on endothelial cells (ECs) and tumor cells. In this review, we discuss the novel molecular mechanisms underlying SEMA3F activity in vascular and tumor biology. Recent evidence suggests that SEMA3F functions as a PI3K-Akt-mTOR inhibitor in mammalian cells, including T cells, ECs, and tumor cells. Therefore, SEMA3F may have broad therapeutic implications. We also discuss the key role of axon guidance molecules as regulators of the tumor microenvironment. Netrin-1, a chemoattractant factor in the neuronal system, promotes tumor progression by enhancing angiogenesis and metastasis. Moreover, our recent studies demonstrate that netrin-1/neogenin interactions augment CD4+ T cell chemokinesis and elicit pro-inflammatory responses, suggesting that netrin-1 plays a key role in modulating the function of a tumor and its surrounding cells in the tumor microenvironment. Overall, this review focuses on SEMA3F and netrin-1 signaling mechanisms to understand the diverse biological functions of axon guidance molecules.
Collapse
Affiliation(s)
- Hironao Nakayama
- Department of Medical Science and Technology, Hiroshima International University, Higashihiroshima, Japan.,Division of Cell Growth and Tumor Regulation, Proteo-Science Center, Ehime University, Toon, Japan
| | - Chiaki Kusumoto
- Department of Medical Science and Technology, Hiroshima International University, Higashihiroshima, Japan
| | - Masako Nakahara
- Department of Medical Science and Technology, Hiroshima International University, Higashihiroshima, Japan
| | - Akira Fujiwara
- Department of Medical Science and Technology, Hiroshima International University, Higashihiroshima, Japan
| | - Shigeki Higashiyama
- Division of Cell Growth and Tumor Regulation, Proteo-Science Center, Ehime University, Toon, Japan
| |
Collapse
|
25
|
The role of UNC5b in ox-LDL inhibiting migration of RAW264.7 macrophages and the involvement of CCR7. Biochem Biophys Res Commun 2018; 505:637-643. [PMID: 30286954 DOI: 10.1016/j.bbrc.2018.09.178] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 09/28/2018] [Indexed: 11/23/2022]
Abstract
The formation of macrophage foam cells by ingesting ox-LDL and focal retention in the subendothelial space are the hallmarks of the early atherosclerotic lesion. The C-C chemokine receptor type 7 (CCR7) is positively correlated with the macrophage migration. But the mechanism of CCR7 regulation is not fully clearness. In the present study, we demonstrates that expression in UNC5b and netrin-1 was enhanced in respond to ox-LDL in Raw264.7 macrophage and associated with decreasing cell migration. Interestingly, it was found that ox-LDL significantly downregulate CCR7 gene expression. The expression of CCR7 in mRNA and protein levels were decreased in ox-LDL treated Raw264.7 macrophage when we over expression of UNC5b with pcDNA3.1-UNC5b plasmid. We got the inverse results after silence UNC5b gene with siUNC5b. Meanwhile, the data show that in ox-LDL inducement, UNC5b down-regulated CCR7, and then inhibited macrophage migration. This novel phenomenon is of a crucial highlights to understand deeply the pathogenesis of atherosclerosis. The molecular mechanism of CCR7 regulation deserves intensive study.
Collapse
|
26
|
Nakayama H, Higashiyama S. [Novel function of axon guidance molecule as a regulator of tumor microenvironment]. Nihon Yakurigaku Zasshi 2018; 150:286-292. [PMID: 29225291 DOI: 10.1254/fpj.150.286] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
27
|
Feinstein J, Ramkhelawon B. Netrins & Semaphorins: Novel regulators of the immune response. Biochim Biophys Acta Mol Basis Dis 2017; 1863:3183-3189. [PMID: 28918114 DOI: 10.1016/j.bbadis.2017.09.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 09/11/2017] [Accepted: 09/12/2017] [Indexed: 12/26/2022]
Abstract
Netrins and semaphorins, members of the neuronal guidance cue family, exhibit a rich biology with significant roles that extend beyond chemotactic guidance of the axons to build the neuronal patterns of the body. Screening of adult tissues and specific cellular subsets have illuminated that these proteins are also abundantly expressed under both steady state and pathological scenarios. This observation suggests that, in addition to their role in the development of the axonal tree, these proteins possess additional novel functions in adult physiopathology. Notably, a series of striking evidence has emerged in the literature describing their roles as potent regulators of both innate and adaptive immunity, providing extra dimension to our knowledge of neuronal guidance cues. In this review, we summarize the key complex roles of netrins and semaphorins outside the central nervous system (CNS) with focus on their immunomodulatory functions that impact pathophysiological conditions.
Collapse
Affiliation(s)
- Jordyn Feinstein
- Division of Vascular Surgery, Department of Surgery, New York University School of Medicine, 530 First Avenue, New York, NY 10016, USA; Department of Cell Biology, New York University School of Medicine, 530 First Avenue, New York, NY 10016, USA
| | - Bhama Ramkhelawon
- Division of Vascular Surgery, Department of Surgery, New York University School of Medicine, 530 First Avenue, New York, NY 10016, USA; Department of Cell Biology, New York University School of Medicine, 530 First Avenue, New York, NY 10016, USA.
| |
Collapse
|
28
|
The intragraft microenvironment as a central determinant of chronic rejection or local immunoregulation/tolerance. Curr Opin Organ Transplant 2016; 22:55-63. [PMID: 27898465 DOI: 10.1097/mot.0000000000000373] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
PURPOSE OF REVIEW Chronic rejection is associated with persistent mononuclear cell recruitment, endothelial activation and proliferation, local tissue hypoxia and related biology that enhance effector immune responses. In contrast, the tumor microenvironment elicits signals/factors that inhibit effector T cell responses and rather promote immunoregulation locally within the tissue itself. The identification of immunoregulatory check points and/or secreted factors that are deficient within allografts is of great importance in the understanding and prevention of chronic rejection. RECENT FINDINGS The relative deficiency of immunomodulatory molecules (cell surface and secreted) on microvascular endothelial cells within the intragraft microenvironment, is of functional importance in shaping the phenotype of rejection. These regulatory molecules include coinhibitory and/or intracellular regulatory signals/factors that enhance local activation of T regulatory cells. For example, semaphorins may interact with endothelial cells and CD4 T cells to promote local tolerance. Additionally, metabolites and electrolytes within the allograft microenvironment may regulate local effector and regulatory cell responses. SUMMARY Multiple factors within allografts shape the microenvironment either towards local immunoregulation or proinflammation. Promoting the expression of intragraft cell surface or secreted molecules that support immunoregulation will be critical for long-term graft survival and/or alloimmune tolerance.
Collapse
|