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Kim SJ, Ko WK, Han GH, Lee D, Cho MJ, Sheen SH, Sohn S. Axon guidance gene-targeted siRNA delivery system improves neural stem cell transplantation therapy after spinal cord injury. Biomater Res 2023; 27:101. [PMID: 37840145 PMCID: PMC10577901 DOI: 10.1186/s40824-023-00434-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 09/18/2023] [Indexed: 10/17/2023] Open
Abstract
BACKGROUND Neural stem cells (NSCs) derived from the embryonic spinal cord are excellent candidates for the cellular regeneration of lost neural cells after spinal cord injury (SCI). Semaphorin 3 A (Sema3A) is well known as being implicated in the major axon guidance of the growth cone as a repulsive function during the development of the central nervous system, yet its function in NSC transplantation therapy for SCI has not been investigated. Here, we report for the first time that embryonic spinal cord-derived NSCs significantly express Sema3A in the SCI environment, potentially facilitating inhibition of cell proliferation after transplantation. METHODS siRNA-Sema3A was conjugated with poly-l-lysin-coated gold nanoparticles (AuNPs) through a charge interaction process. NSCs were isolated from embryonic spinal cords of rats. Then, the cells were embedded into a dual-degradable hydrogel with the siRNA- Sema3A loaded-AuNPs and transplanted after complete SCI in rats. RESULTS The knockdown of Sema3A by delivering siRNA nanoparticles via dual-degradable hydrogels led to a significant increase in cell survival and neuronal differentiation of the transplanted NSCs after SCI. Of note, the knockdown of Sema3A increased the synaptic connectivity of transplanted NSC in the injured spinal cord. Moreover, extracellular matrix molecule and functional recovery were significantly improved in Sema3A-inhibited rats compared to those in rats with only NSCs transplanted. CONCLUSIONS These findings demonstrate the important role of Sema3A in NSC transplantation therapy, which may be considered as a future cell transplantation therapy for SCI cases.
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Affiliation(s)
- Seong Jun Kim
- Department of Neurosurgery, CHA Bundang Medical Center, CHA University, 59, Yatap-ro, Bundang- gu, Seongnam-si, 13496, Gyeonggi-do, Republic of Korea
- Department of Biomedical Science, CHA University, 335, Pangyo-ro, Bundang-gu, Seongnam-si, 13488, Gyeonggi-do, Republic of Korea
| | - Wan-Kyu Ko
- Department of Neurosurgery, CHA Bundang Medical Center, CHA University, 59, Yatap-ro, Bundang- gu, Seongnam-si, 13496, Gyeonggi-do, Republic of Korea
- Department of Biomedical Science, CHA University, 335, Pangyo-ro, Bundang-gu, Seongnam-si, 13488, Gyeonggi-do, Republic of Korea
| | - Gong Ho Han
- Department of Neurosurgery, CHA Bundang Medical Center, CHA University, 59, Yatap-ro, Bundang- gu, Seongnam-si, 13496, Gyeonggi-do, Republic of Korea
- Department of Biomedical Science, CHA University, 335, Pangyo-ro, Bundang-gu, Seongnam-si, 13488, Gyeonggi-do, Republic of Korea
| | - Daye Lee
- Department of Neurosurgery, CHA Bundang Medical Center, CHA University, 59, Yatap-ro, Bundang- gu, Seongnam-si, 13496, Gyeonggi-do, Republic of Korea
- Department of Biomedical Science, CHA University, 335, Pangyo-ro, Bundang-gu, Seongnam-si, 13488, Gyeonggi-do, Republic of Korea
| | - Min Jai Cho
- Department of Neurosurgery, Chungbuk National University, 776, 1Sunhawn-ro, Seowon-gu, Cheongju-si, 28644, Republic of Korea
| | - Seung Hun Sheen
- Department of Neurosurgery, CHA Bundang Medical Center, CHA University, 59, Yatap-ro, Bundang- gu, Seongnam-si, 13496, Gyeonggi-do, Republic of Korea
| | - Seil Sohn
- Department of Neurosurgery, CHA Bundang Medical Center, CHA University, 59, Yatap-ro, Bundang- gu, Seongnam-si, 13496, Gyeonggi-do, Republic of Korea.
- Department of Biomedical Science, CHA University, 335, Pangyo-ro, Bundang-gu, Seongnam-si, 13488, Gyeonggi-do, Republic of Korea.
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Lotfi R, Zamanimehr N. Semaphorin-3A: a promising therapeutic tool in allergic rhinitis. Immunol Res 2022; 70:135-142. [PMID: 35031951 DOI: 10.1007/s12026-022-09264-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 01/10/2022] [Indexed: 11/28/2022]
Abstract
Semaphorin-3A (Sema-3A), a secreted member of the semaphorin family, is well known for playing regulatory functions at all stages of the immune response. Sema-3A transduces signals by binding to its cognate receptors, namely, class A plexins (Plxns A1 to A4) and neuropilin-1 (Nrp-1). The downstream diverse signaling pathways induced by connecting Sema-3A to its receptors were found to be involved in the pathogenesis of different immunological disorders, ranging from cancer to autoimmunity and allergies. Recent studies have demonstrated that Sema-3A expression is diminished in the murine models and patients with allergic rhinitis (AR; a chronic inflammatory disorder of the nasal mucosa), suggesting the involvement of Sema-3A in AR pathogenesis. Investigations also revealed that treatment of these mice with exogenous Sema-3A protein alleviates the clinical symptom scores of AR, thereby compensating for the reduced expression of Sema-3A in AR. Indeed, Sema-3A treatment could suppress allergic responses in AR via inhibiting Th2/Th17 responses and boosting Th1/Treg responses. Also, Sema-3A could diminish dendritic cell (DC) maturation and T cell proliferation. Since it is implicated in the pathogenesis of AR; thus, Sema-3A turns to be a promising tool of therapy to be studied and utilized in this disease. This review intends to highlight the recent evidence on the role of Sema-3A in AR pathogenesis and summarizes the recent findings regarding the expression status of Sema-3A, as well as its therapeutic potential for treating this disease. HIGHLIGHTS: Sema-3A plays regulatory functions at all stages of the immune response. Sema-3A receptors are the class A plexins (A1-A4) and neuropilin-1 (Nrp-1). Sema-3A expression is reduced in murine models and patients with allergic rhinitis. Connecting Sema-3A to Nrp-1 increases Foxp3 expression in Treg cells. Injecting Sema-3A protein exerts therapeutic effects in mouse models of allergic diseases. Sema-3A shows promise as a therapeutic tool for the treatment of allergic rhinitis.
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Affiliation(s)
- Ramin Lotfi
- Clinical Research Development Center, Tohid Hospital, Kurdistan University of Medical Sciences, Sanandaj, Iran. .,Lung Diseases and Allergy Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, 6617713446, Sanandaj, Iran.
| | - Nahid Zamanimehr
- Clinical Research Development Center, Tohid Hospital, Kurdistan University of Medical Sciences, Sanandaj, Iran.,Department of Emergency Medicine, School of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran
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Richeri A, Vierci G, Martínez GF, Latorre MP, Chalar C, Brauer MM. Neuropilin-1 receptor in the rapid and selective estrogen-induced neurovascular remodeling of rat uterus. Cell Tissue Res 2020; 381:299-308. [PMID: 32242249 DOI: 10.1007/s00441-020-03196-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 02/27/2020] [Indexed: 12/16/2022]
Abstract
Sympathetic nerves innervate most organs and regulate organ blood flow. Specifically, in the uterus, estradiol (E2) elicits rapid degeneration of sympathetic axons and stimulates the growth of blood vessels. Both physiological remodeling processes, critical for reproduction, have been extensively studied but as independent events and are still not fully understood. Here, we examine the neuropilin-1 (NRP1), a shared receptor for axon guidance and angiogenic factors. Systemic estradiol or vehicle were chronically injected to prepubertal rats and uterine and sympathetic chain sections immunostained for NRP1. Uterine semaphorin-3A mRNA was evaluated by in situ hybridization. Control sympathetic uterine-projecting neurons (1-month-old) expressed NRP1 in their somas but not in their intrauterine terminal axons. Estradiol did not affect NRP1 in the distal ganglia. However, at the entrance of the organ, some sympathetic NRP1-positive nerves were recognized. Vascular NRP1 was confined to intrauterine small-diameter vessels in both hormonal conditions. Although the overall pattern of NRP1-IR was not affected by E2 treatment, a subpopulation of infiltrated eosinophil leukocytes showed immunoreactivity for NRP1. Sema3A transcripts were detected in this cellular type as well. No NRP1-immunoreactive axons nor infiltrated eosinophils were visualized in other estrogenized pelvic organs. Together, these data suggest the involvement of NRP1/Sema3A signaling in the selective E2-induced uterine neurovascular remodeling. Our data support a model whereby NRP1 could coordinate E2-induced uterine neurovascular remodeling, acting as a positive regulator of growth when expressed in vessels and as a negative regulator of growth when expressed on axons.
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Qiao Q, Song YL, Li FL. [Semaphorin 3A-stimulated bone marrow mesenchymal stem cells sheets promotes osteogenesis of type 2 diabetic rat]. Zhonghua Kou Qiang Yi Xue Za Zhi 2018; 53:333-338. [PMID: 29972992 DOI: 10.3760/cma.j.issn.1002-0098.2018.05.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the effect of semaphorin 3A (Sema3A) pre-treated bone marrow mesenchymal stem cells (BMSC) sheets on new bone formation in type 2 diabetes mellitus rats. Methods: Type 2 diabetes mellitus (T2DM) were induced by injection of streptozotocin, and the BMSC were isolated, controlled, identified and induced into cell sheets. Fifteen T2DM rats were randomly divided into control, sheets and Sema3A-sheets group and the calvarial critical size defect (CSD) model of rats were established. The defect zone of rats from control group were implanted with bone powder. The defect zone of rats from sheets group were implanted with bone powder and BMSC sheets. The defect zone of rats from Sema3A-sheets group were implanted with bone powder and BMSC sheets pretreated with 1.0 mg/L Sema3A. After 8 weeks, the bone samples were harvested and analyzed by micro-CT scanning, HE staining for the evaluation of new bone formation, and the immunohistochemical analysis for the expression of osteogenesis-related proteins including type Ⅰ collagen (COL- Ⅰ ), bone morphogenetic protein-2 (BMP-2), and osteocalcin (OCN). Results: The BMSC were isolated and cultured, and oil red O and Alizarin red S staining proved the multi-potential differentiation. Eight weeks after the establishment of calvarial CSD model, Sema3A-sheet group showed the most abundant new bone formation (0.516±0.070), with increased bone volume fraction, namely bone volume/tissue volume (BV/TV) compared with sheets group (0.319±0.050) and control group (0.224±0.037) (P<0.05), and the sheets group showed increased BV/TV compared with control group (P<0.05). While trabecular thickness (Tb.Th) control group showed no difference in three groups (P>0.05). HE staining also confirmed that Sema3A-sheets group showed the most new bone formation. Sheet group (0.174±0.051) compared showed difference with control group (0.099±0.033) (P< 0.05), and Sema3A-sheet group (0.421±0.069) showed increased bone formation compared with sheet group and control group (P<0.05). Immunohistochemistry showed that BMSC sheet increased the expression of osteogenesis-related proteins including COL-Ⅰ, BMP-2 and OCN, while Sema3A pretreatment showed more obvious increase of the expression of COL-Ⅰ and OCN. Conclusions: The combined implantation of bone powder and Sema3A stimulated BMSC sheets significantly increased bone regeneration in vivo. Therefore, Sema3A pre-treated BMSC sheets transplantation provides a new strategy for restoring bone defect in T2DM.
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Affiliation(s)
- Q Qiao
- Department of Stomatology, Shanxi Medical University, Taiyuan 030012, China
| | - Y L Song
- Department of Implantation, School of Stomatology, The Fourth Military Medical University & State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Xi'an 710032, China
| | - F L Li
- Department of Prosthodontics, People's Hospital Affiliated to Shanxi Medical University, Taiyuan 030012, China
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Qiao Q, Xu X, Song Y, Song S, Zhu W, Li F. Semaphorin 3A promotes osteogenic differentiation of BMSC from type 2 diabetes mellitus rats. J Mol Histol 2018; 49:369-76. [PMID: 29774455 DOI: 10.1007/s10735-018-9776-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2018] [Accepted: 05/10/2018] [Indexed: 02/05/2023]
Abstract
Bone regeneration is impaired in patients with type 2 diabetes mellitus (T2DM), which leads to non-healing after bone loss. The decreased osteogenic capacity of bone mesenchymal stem cells (BMSCs) might be a main reason. Sema3A, as a powerful protein promoting osteocyte differentiation, shows potential for bone regeneration treatment. BMSCs may be a therapeutic solution. In this study, we divided BMSCs from T2DM rats (BMSCs-D) and normal rats (BMSCs-N), identified their ability to differentiate into different cell types. Then we found decreased expression of Sema3A in BMSCs-D compared with BMSCs-N. Stimulating with Sema3A showed no influence in the proliferation or migration of BMSCs. However, Sema3A stimulation significantly increased the expression of osteogenic‑related genes, including type I collagen, alkaline phosphatase, Runt-related transcription factor 2 (RUNX2), bone morphogenetic protein and osteocalcin. Besides, the osteogenic capacity of BMSCs was also increased by Sema3A stimulation. In conclusion, we proved that exogenous Sema3A stimulation might repair the osteogenic capacity of BMSCs-D, thus providing a new strategy for restoring the impaired bone regeneration ability for T2DM patients.
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Abstract
Autoimmune diseases (ADs) are featured by the body's immune responses being directed against its own tissues, resulting in prolonged inflammation and subsequent tissue damage. Currently, the exact pathogenesis of ADs remains not fully elucidated. Semaphorin-3A (Sema3A), a secreted member of semaphorin family, is a potent immunoregulator during all immune response stages. Sema3A has wide expression, such as in bone, connective tissue, kidney, neurons, and cartilage. Sema3A can downregulate ADs by suppressing the over-activity of both T-cell and B-cell autoimmunity. Moreover, Sema3A shows the ability to enhance T-cell and B-cell regulatory properties that control ADs, including systemic lupus erythematosus, rheumatoid arthritis, multiple sclerosis, and systemic sclerosis. However, it can also induce ADs when overexpressed. Together, these data strongly suggest that Sema3A plays a pivotal role in ADs, and it may be a promising treatment target for these diseases. In the present review, we focus on the immunological functions of Sema3A and summarize recent studies on the involvement of Sema3A in the pathogenesis of ADs; the discoveries obtained from recent findings may translate into novel therapeutic agent for ADs.
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Affiliation(s)
- Li-Na Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, 230032, Anhui, China
- Anhui Province Key Laboratory of Major Autoimmune Diseases, 81 Meishan Road, Hefei, Anhui, China
| | - Xiao-Mei Li
- Department of Rheumatology, Anhui Provincial Hospital, 17 Lujiang Road, Hefei, Anhui, China
| | - Dong-Qing Ye
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, 230032, Anhui, China
- Anhui Province Key Laboratory of Major Autoimmune Diseases, 81 Meishan Road, Hefei, Anhui, China
| | - Hai-Feng Pan
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, 230032, Anhui, China.
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Lins MP, Silva ECO, Silva GR, Souza ST, Medeiros NC, Fonseca EJS, Smaniotto S. Association between biomechanical alterations and migratory ability of semaphorin-3A-treated thymocytes. Biochim Biophys Acta Gen Subj 2018; 1862:816-824. [PMID: 29305907 DOI: 10.1016/j.bbagen.2018.01.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 12/14/2017] [Accepted: 01/02/2018] [Indexed: 12/25/2022]
Abstract
BACKGROUND Class 3 semaphorins are soluble proteins involved in cell adhesion and migration. Semaphorin-3A (Sema3A) was initially shown to be involved in neuronal guidance, and it has also been reported to be associated with immune disorders. Both Sema3A and its receptors are expressed by most immune cells, including monocytes, macrophages, and lymphocytes, and these proteins regulate cell function. Here, we studied the correlation between Sema3A-induced changes in biophysical parameters of thymocytes, and the subsequent repercussions on cell function. METHODS Thymocytes from mice were treated in vitro with Sema3A for 30min. Scanning electron microscopy was performed to assess cell morphology. Atomic force microscopy was performed to further evaluate cell morphology, membrane roughness, and elasticity. Flow cytometry and/or fluorescence microscopy were performed to assess the F-actin cytoskeleton and ROCK2. Cell adhesion to a bovine serum albumin substrate and transwell migration assays were used to assess cell migration. RESULTS Sema3A induced filopodia formation in thymocytes, increased membrane stiffness and roughness, and caused a cortical distribution of the cytoskeleton without changes in F-actin levels. Sema3A-treated thymocytes showed reduced substrate adhesion and migratory ability, without changes in cell viability. In addition, Sema3A was able to down-regulate ROCK2. CONCLUSIONS Sema3A promotes cytoskeletal rearrangement, leading to membrane modifications, including increased stiffness and roughness. This effect in turn affects the adhesion and migration of thymocytes, possibly due to a reduction in ROCK2 expression. GENERAL SIGNIFICANCE Sema3A treatment impairs thymocyte migration due to biomechanical alterations in cell membranes.
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Affiliation(s)
- M P Lins
- Laboratório de Biologia Celular, Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, 57072-970 Maceió, Alagoas, Brazil
| | - E C O Silva
- Grupo de Óptica e Nanoscopia (GON), Instituto de Física, Universidade Federal de Alagoas, 57072-970 Maceió, Alagoas, Brazil
| | - G R Silva
- Grupo de Óptica e Nanoscopia (GON), Instituto de Física, Universidade Federal de Alagoas, 57072-970 Maceió, Alagoas, Brazil
| | - S T Souza
- Grupo de Óptica e Nanoscopia (GON), Instituto de Física, Universidade Federal de Alagoas, 57072-970 Maceió, Alagoas, Brazil
| | - N C Medeiros
- Laboratório de Biologia Celular, Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, 57072-970 Maceió, Alagoas, Brazil
| | - E J S Fonseca
- Grupo de Óptica e Nanoscopia (GON), Instituto de Física, Universidade Federal de Alagoas, 57072-970 Maceió, Alagoas, Brazil
| | - S Smaniotto
- Laboratório de Biologia Celular, Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, 57072-970 Maceió, Alagoas, Brazil.
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Rezaeepoor M, Ganjalikhani-Hakemi M, Shapoori S, Eskandari N, Sharifi M, Etemadifar M, Mansuorian M. Semaphorin-3A as An Immune Modulator Is Suppressed by MicroRNA-145-5p. Cell J 2017; 20:113-119. [PMID: 29308627 PMCID: PMC5759673 DOI: 10.22074/cellj.2018.4842] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2016] [Accepted: 01/19/2017] [Indexed: 02/05/2023]
Abstract
Objective Semaphorin-3A (SEMA3A) and its receptors are found on some immune cells and act as suppressors of
immune cells over-activation. Considering the role of SEMA3A and its down-regulation in some autoimmune diseases,
as well as our bioinformatics predictions, we assumed that miR-145-5p might affect SEMA3A expression. So, we aimed
to determine the effect of miR-145-5p on SEMA3A gene expression level.
Materials and Methods In this experimental study, we evaluated the effect of miR-145-5p transfection on SEMA3A
expression in peripheral blood mononuclear cells (PBMCs) using ELISA and quantitative real-time polymerase chain
reaction (PCR) methods.
Results Our results showed that miR-145-5p is able to decrease SEMA3A expression at both protein and mRNA levels.
These data confirmed our previous bioinformatic prediction about the inhibitory effect of miR-145-5p on SEMA3A expression.
Conclusion These results enlightened us about an unknown aspect of SEMA3A role in some autoimmune disorders
like multiple sclerosis (MS) and rheumatoid arthritis (RA) and also proposed SEMA3A as a potential therapeutic approach.
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Affiliation(s)
- Mahsa Rezaeepoor
- Department of Immunology, Faculty of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | | | - Shima Shapoori
- Department of Immunology, Faculty of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Nahid Eskandari
- Department of Immunology, Faculty of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohammadreza Sharifi
- Department of Genetics, Faculty of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Masoud Etemadifar
- Multiple Sclerosis and Neuroimmunology Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Marjan Mansuorian
- Department of Biostatistics and Epidemiology, Faculty of Medicine, Isfahan University of Medical Science, Isfahan, Iran
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Lee J, Shin YJ, Lee K, Cho HJ, Sa JK, Lee SY, Kim SH, Lee J, Yoon Y, Nam DH. Anti-SEMA3A Antibody: A Novel Therapeutic Agent to Suppress Glioblastoma Tumor Growth. Cancer Res Treat 2017; 50:1009-1022. [PMID: 29129044 PMCID: PMC6056981 DOI: 10.4143/crt.2017.315] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 10/30/2017] [Indexed: 11/21/2022] Open
Abstract
Purpose Glioblastoma (GBM) is classified as one of the most aggressive and lethal brain tumor. Great strides have been made in understanding the genomic and molecular underpinnings of GBM, which translated into development of new therapeutic approaches to combat such deadly disease. However, there are only few therapeutic agents that can effectively inhibit GBM invasion in a clinical framework. In an effort to address such challenges, we have generated anti-SEMA3A monoclonal antibody as a potential therapeutic antibody against GBM progression. Materials and Methods We employed public glioma datasets, Repository of Molecular Brain Neoplasia Data and The Cancer Genome Atlas, to analyze SEMA3AmRNA expression in human GBM specimens. We also evaluated for protein expression level of SEMA3A via tissue microarray (TMA) analysis. Cell migration and proliferation kinetics were assessed in various GBM patient-derived cells (PDCs) and U87-MG cell-line for SEMA3A antibody efficacy. GBM patient-derived xenograft (PDX) models were generated to evaluate tumor inhibitory effect of anti-SEMA3A antibody in vivo. Results By combining bioinformatics and TMA analysis, we discovered that SEMA3A is highly expressed in human GBM specimens compared to non-neoplastic tissues. We developed three different anti-SEMA3A antibodies, in fully human IgG form, through screening phage-displayed synthetic antibody library using a classical panning method. Neutralization of SEMA3A significantly reduced migration and proliferation capabilities of PDCs and U87-MG cell line in vitro. In PDX models, treatment with anti-SEMA3A antibody exhibited notable tumor inhibitory effect through down-regulation of cellular proliferative kinetics and tumor-associated macrophages recruitment. Conclusion In present study, we demonstrated tumor inhibitory effect of SEMA3A antibody in GBM progression and present its potential relevance as a therapeutic agent in a clinical framework.
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Affiliation(s)
- Jaehyun Lee
- Institute for Refractory Cancer Research, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.,Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology (SAIHST), Sungkyunkwan University, Seoul, Korea
| | - Yong Jae Shin
- Institute for Refractory Cancer Research, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.,Department of Neurosurgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Kyoungmin Lee
- Institute for Refractory Cancer Research, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.,Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology (SAIHST), Sungkyunkwan University, Seoul, Korea
| | - Hee Jin Cho
- Institute for Refractory Cancer Research, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jason K Sa
- Institute for Refractory Cancer Research, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Sang-Yun Lee
- Institute for Refractory Cancer Research, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.,Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology (SAIHST), Sungkyunkwan University, Seoul, Korea
| | - Seok-Hyung Kim
- Institute for Refractory Cancer Research, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.,Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology (SAIHST), Sungkyunkwan University, Seoul, Korea.,Department of Pathology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jeongwu Lee
- Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Yeup Yoon
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology (SAIHST), Sungkyunkwan University, Seoul, Korea
| | - Do-Hyun Nam
- Institute for Refractory Cancer Research, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.,Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology (SAIHST), Sungkyunkwan University, Seoul, Korea.,Department of Neurosurgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Iseppon F, Napolitano LMR, Torre V, Cojoc D. Cdc42 and RhoA reveal different spatio-temporal dynamics upon local stimulation with Semaphorin-3A. Front Cell Neurosci 2015; 9:333. [PMID: 26379503 PMCID: PMC4549648 DOI: 10.3389/fncel.2015.00333] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Accepted: 08/10/2015] [Indexed: 12/24/2022] Open
Abstract
Small RhoGTPases, such as Cdc42 and RhoA, are key players in integrating external cues and intracellular signaling pathways that regulate growth cone (GC) motility. Indeed, Cdc42 is involved in actin polymerization and filopodia formation, whereas RhoA induces GC collapse and neurite retraction through actomyosin contraction. In this study we employed Förster Resonance Energy Transfer (FRET) microscopy to study the spatio-temporal dynamics of Cdc42 and RhoA in GCs in response to local Semaphorin-3A (Sema3A) stimulation obtained with lipid vesicles filled with Sema3A and positioned near the selected GC using optical tweezers. We found that Cdc42 and RhoA were activated at the leading edge of NG108-15 neuroblastoma cells during spontaneous cycles of protrusion and retraction, respectively. The release of Sema3A brought to a progressive activation of RhoA within 30 s from the stimulus in the central region of the GC that collapsed and retracted. In contrast, the same stimulation evoked waves of Cdc42 activation propagating away from the stimulated region. A more localized stimulation obtained with Sema3A coated beads placed on the GC, led to Cdc42 active waves that propagated in a retrograde manner with a mean period of 70 s, and followed by GC retraction. Therefore, Sema3A activates both Cdc42 and RhoA with a complex and different spatial-temporal dynamics.
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Affiliation(s)
- Federico Iseppon
- Neurobiology Sector, International School for Advanced Studies Trieste, Italy
| | - Luisa M R Napolitano
- Neurobiology Sector, International School for Advanced Studies Trieste, Italy ; Structural Biology Laboratory, Elettra-Sincrotrone Trieste S.C.p.A. Trieste, Italy
| | - Vincent Torre
- Neurobiology Sector, International School for Advanced Studies Trieste, Italy
| | - Dan Cojoc
- Institute of Materials - National Research Council Trieste, Italy
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