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1.
Stem Cell Res Ther ; 9(1): 8, 2018 01 12.
Article in English | MEDLINE | ID: mdl-29329593

ABSTRACT

BACKGROUND: Patients with a deep burn injury are characterized by losing the function of perspiration and being unable to regenerate the sweat glands. Because of their easy accession, multipotency, and lower immunogenicity, bone marrow-derived mesenchymal stem cells (BM-MSCs) represent as an ideal biological source for cell therapy. The aim of this study was to identify whether targeting the promotor of ectodysplasin (EDA) by CRISPR/dCas9-effector (dCas9-E) could induce the BM-MSCs to differentiate into sweat gland-like cells (SGCs). METHODS: Activation of EDA transcription in BM-MSCs was attained by transfection of naive BM-MSCs with the lenti-CRISPR/dCas9-effector and single-guide RNAs (sgRNAs). The impact of dCas9-E BM-MSCs on the formation of SGCs and repair of burn injury was identified and evaluated both in vitro and in a mouse model. RESULTS: After transfection with sgRNA-guided dCas9-E, the BM-MSCs acquired significantly higher transcription and expression of EDA by doxycycline (Dox) induction. Intriguingly, the specific markers (CEA, CK7, CK14, and CK19) of sweat glands were also positive in the transfected BM-MSCs, suggesting that EDA plays a critical role in promoting BM-MSC differentiation into sweat glands. Furthermore, when the dCas9-E BM-MSCs with Dox induction were implanted into a wound in a laboratory animal model, iodine-starch perspiration tests revealed that the treated paws were positive for perspiration, while the paws treated with saline showed a negative manifestation. For the regulatory mechanism, the expression of downstream genes of NF-κB (Shh and cyclin D1) was also enhanced accordingly. CONCLUSIONS: These results suggest that EDA is a pivotal factor for sweat gland regeneration from BM-MSCs and may also offer a new approach for destroyed sweat glands and extensive deep burns.


Subject(s)
Burns/therapy , Cell- and Tissue-Based Therapy/methods , Cellular Reprogramming Techniques/methods , Ectodysplasins/genetics , Mesenchymal Stem Cell Transplantation , Mesenchymal Stem Cells/cytology , Sweat Glands/cytology , Animals , Bone Marrow Cells/cytology , CRISPR-Cas Systems , Cell Differentiation/genetics , Cell Line , Cyclin D1/metabolism , Disease Models, Animal , Doxycycline/pharmacology , Ectodysplasins/biosynthesis , Gene Editing , HEK293 Cells , Hedgehog Proteins/metabolism , Humans , Male , Mice , Mice, Inbred BALB C , Mice, Nude , Promoter Regions, Genetic/genetics , RNA, Guide, Kinetoplastida/genetics
2.
PLoS Genet ; 11(11): e1005676, 2015 Nov.
Article in English | MEDLINE | ID: mdl-26581094

ABSTRACT

Mammary gland development commences during embryogenesis with the establishment of a species typical number of mammary primordia on each flank of the embryo. It is thought that mammary cell fate can only be induced along the mammary line, a narrow region of the ventro-lateral skin running from the axilla to the groin. Ectodysplasin (Eda) is a tumor necrosis factor family ligand that regulates morphogenesis of several ectodermal appendages. We have previously shown that transgenic overexpression of Eda (K14-Eda mice) induces formation of supernumerary mammary placodes along the mammary line. Here, we investigate in more detail the role of Eda and its downstream mediator transcription factor NF-κB in mammary cell fate specification. We report that K14-Eda mice harbor accessory mammary glands also in the neck region indicating wider epidermal cell plasticity that previously appreciated. We show that even though NF-κB is not required for formation of endogenous mammary placodes, it is indispensable for the ability of Eda to induce supernumerary placodes. A genome-wide profiling of Eda-induced genes in mammary buds identified several Wnt pathway components as potential transcriptional targets of Eda. Using an ex vivo culture system, we show that suppression of canonical Wnt signalling leads to a dose-dependent inhibition of supernumerary placodes in K14-Eda tissue explants.


Subject(s)
Ectodysplasins/genetics , Mammary Glands, Human/growth & development , Morphogenesis/genetics , Wnt Signaling Pathway/genetics , Animals , Cell Differentiation/genetics , Ectodysplasins/biosynthesis , Ectodysplasins/metabolism , Embryo, Mammalian , Gene Expression Regulation, Developmental , Hair Follicle/growth & development , Humans , Mammary Glands, Human/cytology , Mice , NF-kappa B/genetics , NF-kappa B/metabolism
3.
PLoS One ; 10(3): e0118796, 2015.
Article in English | MEDLINE | ID: mdl-25790232

ABSTRACT

The epidermal growth factor receptor (EGFR) is overexpressed in multiple carcinomas and is the focus of a variety of targeted therapies. Here we report the design of peptide-based compounds that mimic the EGFR dimerization arm and inhibit allosteric activation of EGFR. These peptides are modified to contain a triazolyl bridge between the peptide strands to constrain the EGFR dimerization arm ß-loop. In this study, we demonstrate that these peptides have significantly improved proteolytic stability over the non-modified peptide sequence, and their inhibitory effects are dependent on the number of the methylene units and orientation of the introduced triazolyl bridge. We identified a peptide, EDA2, which downregulates receptor phosphorylation and dimerization and reduces cell viability. This is the first example of a biologically active triazolyl-bridged peptide targeting the EGFR dimerization interface that effectively downregulates EGFR activation.


Subject(s)
Allosteric Regulation/physiology , Carcinoma/metabolism , Ectodysplasins/biosynthesis , ErbB Receptors/chemistry , Models, Molecular , Protein Engineering/methods , Dimerization , Ectodysplasins/metabolism , Humans , Molecular Dynamics Simulation , Triazoles/chemistry
4.
J Cereb Blood Flow Metab ; 34(6): 979-88, 2014 Jun.
Article in English | MEDLINE | ID: mdl-24643079

ABSTRACT

The ADP-responsive P2Y12 receptor is expressed on both platelets and microglia. Clinical data show that ticagrelor, a direct-acting, reversibly binding P2Y12-receptor antagonist, reduces total cardiovascular events, including stroke. In our present study, we investigated the expression of P2Y12 receptors and the effects of ticagrelor on brain injury in Sprague-Dawley rats subjected to a permanent middle cerebral artery occlusion (MCAo). Rats were treated per os with ticagrelor 3 mg/kg or vehicle at 10 minutes, 22, and 36 hours after MCAo and killed after 48 hours. Immunofluorescence analysis showed an ischemia-related modulation of the P2Y12 receptor, which is constitutively expressed in Iba1(+) resting microglia. After MCAo, activated microglia was mainly concentrated around the lesion, with fewer cells present inside the ischemic core. Ticagrelor significantly attenuated the evolution of ischemic damage-evaluated by magnetic resonance imaging (MRI) at 2, 24, and 48 hours after MCAo-, the number of infiltrating cells expressing the microglia/monocyte marker ED-1, the cerebral expression of proinflammatory mediators (interleukin 1 (IL-1), monocyte chemoattractant protein 1 (MCP-1), nitric oxide synthase (iNOS)) and the associated neurologic impairment. In transgenic fluorescent reporter CX3CR1-green fluorescent protein (GFP) mice, 72 hours after MCAo, ticagrelor markedly reduced GFP(+) microglia and both early and late infiltrating blood-borne cells. Finally, in primary cultured microglia, ticagrelor fully inhibited ADP-induced chemotaxis (P<0.01). Our results show that ticagrelor is protective against ischemia-induced cerebral injury and this effect is mediated, at least partly, by inhibition of P2Y12-mediated microglia activation and chemotaxis.


Subject(s)
Adenosine/analogs & derivatives , Brain Ischemia , Fibrinolytic Agents/pharmacology , Microglia/metabolism , Nerve Tissue Proteins/biosynthesis , Purinergic P2Y Receptor Antagonists/pharmacology , Stroke , Adenosine/pharmacology , Animals , Brain Ischemia/drug therapy , Brain Ischemia/genetics , Brain Ischemia/metabolism , Brain Ischemia/pathology , Brain Ischemia/physiopathology , Chemokine CCL2/biosynthesis , Ectodysplasins/biosynthesis , Interleukin-1/biosynthesis , Mice , Mice, Transgenic , Microglia/pathology , Nerve Tissue Proteins/genetics , Nitric Oxide Synthase Type II/biosynthesis , Nitric Oxide Synthase Type II/genetics , Rats , Rats, Sprague-Dawley , Stroke/drug therapy , Stroke/genetics , Stroke/metabolism , Stroke/pathology , Stroke/physiopathology , Ticagrelor , Time Factors
5.
Cytotherapy ; 15(4): 434-48, 2013 Apr.
Article in English | MEDLINE | ID: mdl-23376106

ABSTRACT

BACKGROUND AIMS: Bone marrow and subcutaneous adipose tissue are both considered prospective sources of mesenchymal stromal cells (MSCs), which can be used in cell therapy for spinal cord injury (SCI). The present study investigated whether human adipose tissue-derived mesenchymal stromal cells (hADSCs) transplanted into a rat model of SCI would lead to similar or improved neurologic effects compared with human bone marrow-derived mesenchymal stromal cells (hBMSCs). METHODS: hADSCs and hBMSCs were isolated from five adult donors. These MSCs were characterized using flow cytometry, immunocytochemistry, real-time polymerase chain reaction and enzyme-linked immunosorbent assay. Immediately after SCI, 2 × 10(5) hBMSCs or hADSCs were injected into the injured spinal cord. Locomotor function, cell survival and differentiation, spinal cord tissue morphology and brain-derived neurotrophic factor (BDNF) expression were compared between groups. RESULTS: hADSCs and hBMSCs showed similar surface protein expression, and hADSCs showed higher proliferative activity with higher expression of vascular endothelial cell growth factor, hepatocyte growth factor and BDNF than hBMSCs. After transplant, both hADSCs and hBMSCs migrated within the injured spinal cord without differentiating into glial or neuronal elements. Administration of hADSCs was associated with marked changes in the SCI environment, with significant increases in BDNF levels. This was simultaneously associated with increased angiogenesis, preserved axons, decreased numbers of ED1-positive macrophages and reduced lesion cavity formation. These changes were accompanied by improved functional recovery. CONCLUSIONS: The present results suggest that hADSCs would be more appropriate for transplant to treat SCI than hBMSCs.


Subject(s)
Adipose Tissue/cytology , Bone Marrow Cells/cytology , Mesenchymal Stem Cell Transplantation , Mesenchymal Stem Cells/cytology , Spinal Cord Injuries/therapy , Animals , Brain-Derived Neurotrophic Factor/biosynthesis , Brain-Derived Neurotrophic Factor/metabolism , Cell Differentiation , Cell Movement , Cell Proliferation , Cell Survival , Ectodysplasins/biosynthesis , Female , Humans , Macrophages/metabolism , Middle Aged , Neovascularization, Physiologic , Rats , Rats, Sprague-Dawley , Spinal Cord/metabolism
6.
J Diabetes Complications ; 27(2): 114-22, 2013.
Article in English | MEDLINE | ID: mdl-23153674

ABSTRACT

AIMS: We investigated the dynamics and morphology of thymus macrophages in response to thymus involution caused by hyperglycemia. Thymus is an organ affected early and dramatically after the onset of diabetes, losing most of the thymocyte populations but diabetes's impact on the components of the thymus stroma is largely unknown. METHODS: Rats were injected with streptozotocin and thymus weight, body weight, and glycemia were measured at various time points. The dynamics and morphology of macrophages in the diabetic thymus were investigated by histology, immunohistochemistry, qPCR, electron microscopy and flow cytometry. RESULTS: In hyperglycemic animals the involuting thymus is gradually infiltrated by tissue macrophages (ED1-positive) and depleted of resident macrophages (ED2-positive). While ED1 positive macrophages are scattered in both cortex and medulla the ED2 positive ones are limited to the cortex and cortico-medullary junction. CD4+CD11b+macrophages also accumulate. The TUNEL reaction that detects the degradation of the DNA from apoptotic thymocytes in the macrophages is enhanced. The thymic macrophages enlarge and accumulate lipid vacuoles and apoptotic bodies. qPCR measurements of the expression of macrophage markers showed a persistent increase in the diabetic thymus after the injection of streptozotocin. CONCLUSIONS: Thymus involutes rapidly and persistently after the onset of hyperglycemia because of the elevated apoptosis in the thymocytes. Tissue macrophages accumulate in the thymus and the resident macrophages decrease. This results in an overall increase in macrophage activity in the diabetic thymus in response to the elevated apoptosis of thymocytes produced by hyperglycemia.


Subject(s)
Apoptosis , Diabetes Complications/immunology , Lymphatic Diseases/immunology , Macrophages/immunology , Stromal Cells/immunology , Thymocytes/immunology , Thymus Gland/immunology , Animals , Biomarkers/metabolism , Diabetes Complications/metabolism , Diabetes Complications/pathology , Diabetes Complications/prevention & control , Ectodysplasins/biosynthesis , Ectodysplasins/genetics , Ectodysplasins/metabolism , Female , Hyperglycemia/etiology , Hyperglycemia/prevention & control , Hypoglycemic Agents/therapeutic use , Lymphatic Diseases/metabolism , Lymphatic Diseases/pathology , Lymphatic Diseases/prevention & control , Macrophage Activation/drug effects , Macrophages/drug effects , Macrophages/metabolism , Macrophages/ultrastructure , Male , Organ Size/drug effects , Rats , Rats, Sprague-Dawley , Stromal Cells/drug effects , Stromal Cells/metabolism , Stromal Cells/ultrastructure , Thymocytes/drug effects , Thymocytes/metabolism , Thymocytes/ultrastructure , Thymus Gland/drug effects , Thymus Gland/metabolism , Thymus Gland/ultrastructure , Up-Regulation/drug effects , Vacuoles/drug effects , Vacuoles/metabolism , Vacuoles/ultrastructure
7.
Iran Biomed J ; 16(2): 90-100, 2012.
Article in English | MEDLINE | ID: mdl-22801282

ABSTRACT

BACKGROUND: The primary phase of traumatic spinal cord injury (SCI) starts by a complex local inflammatory reaction such as secretion of pro-inflammatory cytokines from microglia and injured cells that substantially contribute to exacerbating pathogenic events in secondary phase. Valproic acid (VPA) is a histone deacetylase inhibitor. Acetylation of histones is critical to cellular inflammatory and repair processes. METHODS: In this study, rats were randomly assigned to five experimental groups (laminectomy, untreated, and three VPA-treated groups). For SCI, severe contusion was used. In treated groups, VPA was administered intraperitoneally at doses of 100, 200 and 400 mg/kg daily three hours after injury for 7 days. To compare locomotor improvement among experimental groups, behavioral assessments were performed by the Basso, Beattie and Bresnahan (BBB) rating scale. The expression of neurotrophins was evaluated by RT-PCR and real-time PCR. RESULTS: VPA administration increased regional brain-derived neurotrophic factor and glial cell-derived neurotrophic factor mRNA levels. Local inflammation and the expression of the lysosomal marker ED1 by activated macrophages/microglial cells were reduced by VPA and immunoreactivity of acetylated histone and microtubule-associated protein were increased. CONCLUSION: The results showed a reduction in the development of secondary damage in rat spinal cord trauma with an improvement in the open field test (BBB scale) with rapid recovery.


Subject(s)
Histone Deacetylase Inhibitors/pharmacology , Motor Activity/drug effects , Spinal Cord Injuries/drug therapy , Valproic Acid/pharmacology , Animals , Brain-Derived Neurotrophic Factor/biosynthesis , Brain-Derived Neurotrophic Factor/genetics , Contusions , Cytokines/biosynthesis , Cytokines/metabolism , Ectodysplasins/biosynthesis , Epigenesis, Genetic , Female , Glial Cell Line-Derived Neurotrophic Factor/biosynthesis , Glial Cell Line-Derived Neurotrophic Factor/genetics , Laminectomy , Macrophages/metabolism , Microglia/metabolism , Microtubule-Associated Proteins/physiology , Neuroprotective Agents/pharmacology , Neuroprotective Agents/therapeutic use , RNA, Messenger/biosynthesis , Random Allocation , Rats , Rats, Sprague-Dawley , Recovery of Function/drug effects , Spinal Cord/drug effects , Spinal Cord Injuries/physiopathology , Valproic Acid/therapeutic use
8.
Zhong Nan Da Xue Xue Bao Yi Xue Ban ; 33(10): 913-8, 2008 Oct.
Article in Chinese | MEDLINE | ID: mdl-19001733

ABSTRACT

OBJECTIVE: To investigate the effect of mycophenolate mofetil(MMF) on early inflammatory reaction of renal lesion in streptozotocin(STZ)-induced diabetic rats. METHODS: Thirty-six male Sprague-Dawley rats were randomly divided into 3 groups after uninephrectomy: normal control group, diabetic model group, and MMF-treated group. Six rats in each group were sacrificed at the 4th week and 14th week after STZ injection. Twenty-four hour urinary protein (24 h Upro) count was measured before death. The expressions of regulated on activation of normal T expressed and secreted (RANTES),ectodermal dysplasia (ED-1)and Col-IV protein in the renal tissue were detected by immunohistochemistry. The expression of RANTES mRNA in the renal tissue was detected by RT-PCR. RESULTS: MMF prevented the increasing of 24h Upro in diabetic rats,and the expressions of RANTES,ED-1,Col-IV protein and RANTES mRNA in the kidney of MMF-treated rats were significantly decreased. CONCLUSION: MMF plays an early renal protective role in diabetic nephropathy, possibly through inhibition of early inflammatory reaction.


Subject(s)
Chemokine CCL5/biosynthesis , Diabetes Mellitus, Experimental/drug therapy , Diabetic Nephropathies/prevention & control , Ectodysplasins/biosynthesis , Mycophenolic Acid/analogs & derivatives , Animals , Chemokine CCL5/genetics , Diabetes Mellitus, Experimental/metabolism , Diabetic Nephropathies/metabolism , Ectodysplasins/genetics , Inflammation/metabolism , Kidney/metabolism , Male , Mycophenolic Acid/therapeutic use , RNA, Messenger/biosynthesis , RNA, Messenger/genetics , Random Allocation , Rats , Rats, Sprague-Dawley
9.
Gene ; 427(1-2): 42-6, 2008 Dec 31.
Article in English | MEDLINE | ID: mdl-18848976

ABSTRACT

EDA, the gene mutated in anhidrotic ectodermal dysplasia, encodes ectodysplasin, a TNF superfamily member that activates NF-kB mediated transcription. To identify EDA target genes, we have earlier used expression profiling to infer genes differentially expressed at various developmental time points in Tabby (Eda-deficient) compared to wild-type mouse skin. To increase the resolution to find genes whose expression may be restricted to epidermal cells, we have now extended studies to primary keratinocyte cultures established from E19 wild-type and Tabby skin. Using microarrays bearing 44,000 gene probes, we found 385 preliminary candidate genes whose expression was significantly affected by Eda loss. By comparing expression profiles to those from Eda-A1 transgenic skin, we restricted the list to 38 "candidate EDA targets", 14 of which were already known to be expressed in hair follicles or epidermis. We confirmed expression changes for 3 selected genes, Tbx1, Bmp7, and Jag1, both in keratinocytes and in whole skin, by Q-PCR and Western blotting analyses. Thus, by the analysis of keratinocytes, novel candidate pathways downstream of EDA were detected.


Subject(s)
Ectodysplasins/genetics , Gene Expression Profiling , Gene Expression Regulation , Keratinocytes/cytology , Mutation , Animals , Bone Morphogenetic Protein 7/metabolism , Calcium-Binding Proteins/metabolism , Ectodysplasins/biosynthesis , Epidermis/metabolism , Female , Hair Follicle/metabolism , Intercellular Signaling Peptides and Proteins/metabolism , Jagged-1 Protein , Male , Membrane Proteins/metabolism , Mice , Mice, Inbred C57BL , Mice, Mutant Strains , NF-kappa B/metabolism , Serrate-Jagged Proteins , Skin/metabolism , T-Box Domain Proteins/metabolism
10.
Int J Colorectal Dis ; 23(10): 947-55, 2008 Oct.
Article in English | MEDLINE | ID: mdl-18633626

ABSTRACT

BACKGROUND: Migration of colonic lamina propria fibroblasts (CLPF) plays an important role during mucosal wound healing as well as fibrosis and fistula formation in Crohn's disease (CD). Recently, we showed that the migratory potential of CD-CLPF was significantly reduced compared to control CLPF. Fistula-derived CD-CLPF migrated less and fibrosis-CLPF more than CLPF from inflamed CD mucosa. These changes in migratory behavior were associated with changes in production of the migration-inducing fibronectin (FN) isoforms ED-A and ED-B. A permanent reduction of the migratory potential of CLPF was mediated by IFN-gamma and tumor necrosis factor (TNF) modulate FN isofom expression in CLPF and thereby might regulate CLPF migration. MATERIALS AND METHODS: Control CLPF were incubated for 72 h with IFN-gamma, TNF, IFN-gamma plus TNF, or TGF-beta1. Messenger RNA (mRNA) was isolated and expression of FN and isoforms ED-A and ED-B was quantified by real-time polymerase chain reaction. FN, ED-A, and ED-B were investigated by Western blotting. FN receptor integrin alpha5beta1 was analyzed by FACS. RESULTS: No difference was found for the surface display of integrin alpha5beta1 between stimulated and non-stimulated cells. In TGF-beta1 incubated CLPF mRNA amount of FN and isoforms ED-A and ED-B was slightly increased. IFN-gamma only decreased FN in CLPF, TNF significantly reduced FN-mRNA by 40%, FN ED-A mRNA by 25%, and ED-B mRNA by 50%. The TNF-mediated mRNA downregulation resulted in a decreased protein amount as revealed by Western blotting. CONCLUSION: Cytokines such as IFN-gamma, TNF, and TGF-beta1 modulate the production of fibronectin isoforms. Our data indicate that inflammation-induced modulation of FN-isoform production is involved in the alterations of migratory potential of CLPF isolated from CD mucosa.


Subject(s)
Ectodysplasins/genetics , Fibroblasts/metabolism , Fibronectins/genetics , Gene Expression , Intestinal Mucosa/metabolism , RNA/genetics , Adult , Aged , Blotting, Western , Cell Movement , Cells, Cultured , Crohn Disease/genetics , Crohn Disease/metabolism , Crohn Disease/pathology , Cytokines/metabolism , Ectodysplasins/biosynthesis , Female , Fibroblasts/pathology , Fibronectins/biosynthesis , Flow Cytometry , Humans , Intestinal Mucosa/pathology , Male , Middle Aged , Polymerase Chain Reaction
11.
J Neurosci Methods ; 165(2): 230-43, 2007 Sep 30.
Article in English | MEDLINE | ID: mdl-17655935

ABSTRACT

Studies have shown the presence of expanded polyQ containing proteins in brain cells related to Huntington disease (HD) and other poly-glutamine disorders. We report the use of organically modified silica (ORMOSIL) nanoparticles as an efficient non-viral gene carrier in an effort to model brain pathology associated with those disorders induced by expanded polyQ peptides. In experiment 1, plasmids expressing Hemaglutinin-tagged polypeptides with 20 glutamine repeats (Q20) or with extended 127-glutamine repeats (Q127) were complexed with ORMOSIL nanoparticles and injected twice (2 weeks apart) into the lateral ventricle of the mouse brain. Fourteen days post-injection of Q127, immunocytochemistry revealed the presence of the characteristic nuclear and cytoplasmic Q127 aggregates in numerous striatal, septal and neocortical neuronal cells as well as ubiquitin-containing aggregates indicative of the neuronal pathology. The mice receiving Q127 showed a marked increase in the reactive GFAP (+) astrocytes in striatum, septum and brain cortex, further indicating the neurodegenerative changes, accompanied by motor impairments. In experiment 2, plasmids Q20 or Q127 were complexed with ORMOSIL and were injected into the brain lateral ventricle or directly into the striatum of adult rats. In both routes of transfection, Q127 induced the appearance of reactive GFAP (+) astrocytes and activated ED1 antigen expressing microglia. An increase in the size of the lateral ventricle was also observed in rats receiving Q127. In transgenic mouse polyQ models, extensive pathologies occur outside the nervous system and the observed brain pathologies could reflect developmental effects of the toxic polyQ proteins. Our experiments show that the nervous tissue restricted expression of poly Q-extended peptides in adult brain is sufficient to evoke neuropathologies associated with HD and other polyQ disorders. Thus, nanotechnology can be employed to model pathological and behavioral aspects of genetic brain diseases in mice as well as in other species, providing a novel research tool for in vivo testing of single or multi-gene therapies.


Subject(s)
Gene Transfer Techniques/trends , Genetic Vectors/genetics , Nanoparticles/chemistry , Peptides/genetics , Siloxanes/pharmacology , Transfection/methods , Animals , Brain/metabolism , Brain/pathology , Brain/physiopathology , DNA Repeat Expansion/genetics , Disease Models, Animal , Ectodysplasins/analysis , Ectodysplasins/biosynthesis , Female , Gliosis/genetics , Gliosis/metabolism , Gliosis/physiopathology , Huntington Disease/genetics , Huntington Disease/metabolism , Huntington Disease/physiopathology , Injections, Intraventricular , Male , Mice , Mice, Transgenic , Nanoparticles/toxicity , Nerve Degeneration/genetics , Nerve Degeneration/metabolism , Nerve Degeneration/physiopathology , Peptides/metabolism , Peptides/toxicity , Plasmids/genetics , Rats , Rats, Wistar , Silicon Dioxide
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