Search results for: GFP Recombinant Adenovirus
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MicroRNA-24 regulates vascular remodeling via inhibiting PDGF-BB pathway in diabetic rat model.Hyperglycemia is the high risk factor of vascular remodeling induced by angioplasty, and neointimal hyperplasia is strongly implicated in the pathogenesis of vascular remodeling caused by carotid artery balloon injury. Studies have shown that MicroRNA 24 (miR-24) plays an important role in angiocardiopathy, However, the role of miR-24 is far from thorough research. In this study, we investigate whether up-regulation of miR-24 by using miR-24 recombinant adenovirus (Ad-miR-24-GFP) can inhibit PDGF-BB signaling pathway and attenuate vascular remodeling in the diabetic rat model.
1332 related Products with: MicroRNA-24 regulates vascular remodeling via inhibiting PDGF-BB pathway in diabetic rat model.IGF-1R Signaling Phospho- PDGF Phospho-Specific Arr Horizontal Laminar Flow Horizontal Laminar Flow Horizontal Laminar Flow Vertical Laminar Flow Cle Vertical Laminar Flow Cle Horizontal Laminar Flow Vertical Laminar Flow Cle Vertical Laminar Flow Cle Rabbit Anti-PDGF AB+BB Po Rabbit Anti-PDGF AB+BB Po
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Genetically-modified bone mesenchymal stem cells with TGF-βimprove wound healing and reduce scar tissue formation in a rabbit model.Extensive scar tissue formation often occurs after severe burn injury, trauma, or as one of complications after surgical intervention. Despite significant therapeutic advances, it is still a significant challenge to manage massive scar tissue formation while also promoting normal wound healing. The goal of this study was to investigate the therapeutic effect of bone mesenchymal stem cells (BMSCs) that were genetically modified to overexpress transforming growth factor-beta 3 (TGF-β), an inhibitor of myofibroblast proliferation and collagen type I deposition, on full-thickness cutaneous wound healing in a rabbit model. Twenty-four rabbits with surgically-induced full-thickness cutaneous wounds created on the external ear (1.5×1.5cm, two wounds/ear) were randomized into four groups: (G1), wounds with no special treatment but common serum-free culture medium as negative controls; (G2), topically-applied recombinant adenovirus, expressing TGF-β/GFP; (G3), topically-applied BMSCs alone; (G4), topically-applied BMSCs transfected with Ad-TGF-β/GFP (BMSCs); and (G5), an additional normal control (n=2) with neither wound nor treatment on the external ear skin. The sizes of wounds on the ear tissues were grossly examined, and the scar depth and density of wounds were histologically evaluated 21, 45, and 90 days after surgical wound creation. Our results demonstrated that G4 significantly reduced the wound scar depth and density, compared to G1~3. Numbers of cells expressing GFP significantly increased in G4, compared to G2. The protein expression of TGF-βand type III collagen in G4 significantly increased, while the ratio of type I to type III collagen was also significantly reduced, which is similar to the tissue architecture found in G5, as compared the other treatment groups. In conclusion, transplantation of BMSCsremarkably improves wound healing and reduces skin scar tissue formation in an animal model, which may potentially provide an alternative in the treatment of extensive scar tissue formation after soft tissue injury.
1075 related Products with: Genetically-modified bone mesenchymal stem cells with TGF-βimprove wound healing and reduce scar tissue formation in a rabbit model.TGF beta induced factor 2 Alkaline Phospatase (ALP) Bone marrow tumor and adj Human normal bone and ost Bone and cartilage cancer Bone cancer test tissue a Bone and cartilage tumor Bone marrow tumor and nor Interleukin-34 IL34 (N-t Interleukin-34 IL34 anti anti HSV (II) gB IgG1 (mo anti HCMV IE pp65 IgG1 (m
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Peroxisome proliferator-activated receptor delta regulates lipid droplet formation and transport in goat mammary epithelial cells.Even though recent evidence in goat mammary epithelial cells (GMEC) suggest a role of peroxisome proliferator-activated receptor delta (PPARD) in regulating lipid homeostasis, its role is not fully understood. Our hypothesis was that PPARD regulates lipid transport processes in GMEC and, thus, plays a crucial role in regulating fat formation. The PPARD was overexpressed using an adenovirus system (Ad-PPARD) with recombinant green fluorescent protein (Ad-GFP) as the control. Results revealed that overexpression of PPARD markedly upregulated the mRNA abundance of PPARD. Compared with the control (Ad-GFP+dimethyl sulfoxide), overexpression of PPARD alone had no effect on mRNA expression of CD36, SCD1, FABP4, ACSL1, and ADRP. The cultures overexpressing PPARD with the PPARD ligand GW0742 (GW) upregulated the expression of CD36, FABP3, FABP4, ACSL1, and ADRP. Overexpression of PPARD in GMEC plus GW increased the concentration of 16:1 and 18:1-trans and was associated with upregulation of SCD1. Compared with the control (Ad-GFP+dimethyl sulfoxide), the decrease of triacylglycerol concentration coupled with upregulation of genes related to lipid droplet secretion (e.g., ADRP and ACSL1) induced by PPARD overexpression suggests a role in lipid droplet (LD) secretion. Luciferase assay revealed that GW increased the ADRP promoter activity in a dose-dependent manner. Knockdown of PPARD impaired the increase of ADRP promoter activity induced by GW, whereas GW enhanced the activity of ADRP promoter in GMEC overexpressing PPARD. Data with the ADRP 5'-flanking truncated luciferase reporter suggest a core region (-1,444 to -990 bp) response element for the induction of GW. This core region contains a known PPARG response element (PPRE) at -1,003 to -990 bp. When the PPRE was mutated, the overexpression of PPARD had no effect on ADRP promoter activity. Collectively, these results reveal a novel role for PPARD in lipid homeostasis via promoting fatty acid transport and LD formation through a mechanism of direct binding to the promoter of key genes. Hence, PPARD activity may contribute to fatty acid transport and LD formation during lactation.
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Long non-coding RNA NONMMUG014387 promotes Schwann cell proliferation after peripheral nerve injury.Schwann cells play a critical role in peripheral nerve regeneration through dedifferentiation and proliferation. In a previous study, we performed microarray analysis of the sciatic nerve after injury. Accordingly, we predicted that long non-coding RNA NONMMUG014387 may promote Schwann cell proliferation after peripheral nerve injury, as bioinformatic analysis revealed that the target gene of NONMMUG014387 was collagen triple helix repeat containing 1 (Cthrc1). Cthrc1 may promote cell proliferation in a variety of cells by activating Wnt/PCP signaling. Nonetheless, bioinformatic analysis still needs to be verified by biological experiment. In this study, the candidate long non-coding RNA, NONMMUG014387, was overexpressed in mouse Schwann cells by recombinant adenovirus transfection. Plasmid pHBAd-MCMV-GFP-NONMMUG014387 and pHBAd-MCMV-GFP were transfected into Schwann cells. Schwann cells were divided into three groups: control (Schwann cells without intervention), Ad-GFP (Schwann cells with GFP overexpression), and Ad-NONMMUGO148387 (Schwann cells with GFP and NONMMUGO148387 overexpression). Cell Counting Kit-8 assay was used to evaluate proliferative capability of mouse Schwann cells after NONMMUG014387 overexpression. Polymerase chain reaction and western blot assay were performed to investigate target genes and downstream pathways of NONMMUG014387. Cell proliferation was significantly increased in Schwann cells overexpressing lncRNA NONMMUG014387 compared with the other two groups. Further, compared with the control group, mRNA and protein levels of Cthrc1, Wnt5a, ROR2, RhoA, Rac1, JNK, and ROCK were visibly up-regulated in the Ad-NONMMUGO148387 group. Our findings confirm that long non-coding RNA NONMMUG014387 can promote proliferation of Schwann cells surrounding the injury site through targeting Cthrc1 and activating the Wnt/PCP pathway.
1344 related Products with: Long non-coding RNA NONMMUG014387 promotes Schwann cell proliferation after peripheral nerve injury.Epidermal Growth Factor ( Epidermal Growth Factor ( REASTAIN® Quick Diff Kit T-cell proliferation grad TCCI T cell proliferation TCCI T cell proliferation T-cell proliferation grad TCBI T cell proliferation TCBI T cell proliferation T-cell proliferation grad TCPI T cell proliferation TCPI T cell proliferation
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[A recombinant adenovirus vector carrying murine interleukin-21 gene controls chronic HBV infection in mice].To investigate the effect of an adenovirus vector containing murine interleukin-21 gene (Ad-GFP-mIL-21) in virus clearance and on the production of HBV-specific antibodies in mice with persistent HBV infection.
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High Content Positional Biosensor Assay to Screen for Compounds that Prevent or Disrupt Androgen Receptor and Transcription Intermediary Factor 2 Protein-Protein Interactions.Transcriptional Intermediary Factor 2 (TIF2) is a key Androgen receptor (AR) coactivator that has been implicated in the development and progression of castration resistant prostate cancer (CRPC). This chapter describes the implementation of an AR-TIF2 protein-protein interaction (PPI) biosensor assay to screen for small molecules that can induce AR-TIF2 PPIs, inhibit the DHT-induced formation of AR-TIF2 PPIs, or disrupt pre-existing AR-TIF2 PPIs. The biosensor assay employs high content imaging and analysis to quantify AR-TIF2 PPIs and integrates physiologically relevant cell-based assays with the specificity of binding assays by incorporating structural information from AR and TIF2 functional domains along with intracellular targeting sequences using fluorescent protein reporters. Expression of the AR-Red Fluorescent Protein (RFP) "prey" and TIF2-Green Fluorescent Protein (GFP) "bait" components of the biosensor is directed by recombinant adenovirus (rAV) expression constructs that facilitated a simple co-infection protocol to produce homogeneous expression of both biosensors that is scalable for screening. In untreated cells, AR-RFP expression is localized predominantly to the cytoplasm and TIF2-GFP expression is localized only in the nucleoli of the nucleus. Exposure to DHT induces the co-localization of AR-RFP within the TIF2-GFP positive nucleoli of the nucleus. The AR-TIF2 biosensor assay therefore recapitulates the ligand-induced translocation of latent AR from the cytoplasm to the nucleus, and the PPIs between AR and TIF2 result in the colocalization of AR-RFP within TIF2-GFP expressing nucleoli. The AR-TIF2 PPI biosensor approach offers significant promise for identifying molecules with potential to modulate AR transcriptional activity in a cell-specific manner that may overcome the development of resistance and progression to CRPC.
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Adenovirus-Mediated Expression of BMP-2 and BFGF in Bone Marrow Mesenchymal Stem Cells Combined with Demineralized Bone Matrix For Repair of Femoral Head Osteonecrosis in Beagle Dogs.This study investigated the effect of using adenovirus-mediated expression of bone morphogenetic protein 2 (Ad-BMP-2) and basic fibroblast growth factor (bFGF) in bone marrow mesenchymal stem cells (BMSCs) in combination with a demineralized bone matrix (DBM) to repair osteonecrosis of the femoral head (ONFH) in Beagle dogs.
1117 related Products with: Adenovirus-Mediated Expression of BMP-2 and BFGF in Bone Marrow Mesenchymal Stem Cells Combined with Demineralized Bone Matrix For Repair of Femoral Head Osteonecrosis in Beagle Dogs.Bone marrow tumor and adj Bone marrow tumor and nor Human normal bone and ost Bone and cartilage cancer Bone cancer test tissue a Bone and cartilage tumor Bone Morphogenetic Protei Human Bone Morphogenetic Macrophage Colony Stimula Macrophage Colony Stimula Alkaline Phospatase (ALP) (7’-Benzyloxy-indolymet
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[Effects of recombinant adenovirus Ad-miR-29b2c on HGC-27 cell proliferation and migration].We constructed recombinant adenoviruses expressing miR-29b2c (Ad-miR29b2c), and analyzed their effects on the proliferation and migration of HGC-27 and MGC-803 cells. miR-29b2c gene was amplified by PCR from genomic DNA and cloned into the pAdTrack-CMV vector to create the shuttle plasmid pAdT-29b2c. The recombinant plasmid was verified by restriction enzyme digestion and sequencing. The linearized shuttle vector was mixed with an adenoviral backbone plasmid (pAdEasy-1), followed by cotransformation into competent BJ5183 cells to generate the recombinant plasmid pAd-miR-29b2c. Finally, recombinant adenoviral vectors were generated by transfecting the recombinant plasmid into 293A packaging cell line. HGC-27 and MGC-803 cells were infected with the recombinant adenoviruses expressing pAd-miR-29b2c, then MTT and wound-healing assay were used to analyze the effects of pAd-miR-29b2c on the proliferation and migration of HGC-27 and MGC-803 cells. The miR-29b and miR-29c levels were significantly increased in HGC-27 cells after infected with pAd-miR-29b2c. MTT and wound-healing analysis also revealed a significant decrease in proliferation and migration of HGC-27 and MGC-803 cells compared to the control Ad-GFP-infected cells. Furthermore, western blotting results demonstrated that the protein expression level of δ-catenin was reduced in pAd-miR-29b2c transfected HGC-27 and MGC-803 cells. Taken together, the recombinant adenoviral vector was generated, and it can significantly inhibit the proliferation and migration of HGC-27 and MGC-803 cells.
1600 related Products with: [Effects of recombinant adenovirus Ad-miR-29b2c on HGC-27 cell proliferation and migration].Ras (dn N17) Recombinant Epidermal Growth Factor ( Epidermal Growth Factor ( T-cell proliferation grad TCCI T cell proliferation TCCI T cell proliferation T-cell proliferation grad TCBI T cell proliferation TCBI T cell proliferation T-cell proliferation grad TCPI T cell proliferation TCPI T cell proliferation
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Enhancement or inhibition of PLCγ2 expression in rat hepatocytes by recombinant adenoviral vectors that contain full-length gene or siRNA.We investigated the effects of recombinant adenovirus vectors that overexpress or silence PLCγ2 on the expression of this gene during hepatocyte proliferation. Hepatocytes were isolated, identified by immunofluorescent cytochemical staining and infected by previously constructed Ad-PLCγ2 and Ad-PLCγ2 siRNA1, siRNA2 and siRNA3. Green fluorescent protein (GFP) expression was observed by fluorescence microscopy. Infection percentage was calculated by flow cytometry. mRNA and protein levels of PLCγ2 were detected by quantitative reverse transcription-PCR (qRT-PCR) and western blotting, respectively. The viability of the infected hepatocytes was measured by 3-(4,5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assay. We found that nearly 97% of cells were positive for the hepatocyte marker, CK18. After infection of Ad-PLCγ2 and Ad-PLCγ2 siRNA, more than 99% of hepatocytes expressed GFP significantly, and mRNA and protein expression of PLCγ2 was up-regulated significantly in Ad-PLCγ2 infected hepatocytes, but down-regulated in Ad-PLCγ2 siRNA2 infected cells. The cell proliferation rate decreased in PLCγ2-overexpressing cells, while the rate increased in PLCγ2-silencing cells. We verified that recombinant Ad-PLCγ2 and Ad-PLCγ2 siRNA2 were constructed successfully. These two recombinant vectors promoted or decreased the expression of PLCγ2 in rat hepatocytes and affected the cell proliferation rate, which provides a useful tool for further investigation of the role of PLCγ2 in hepatocyte apoptosis.
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Targeting expression of antimicrobial peptide CAMA-Syn by adenovirus vector in macrophages inhibits the growth of intracellular bacteria.Although purified and synthesized Cecropin A-magainin 2 (CAMA-syn) shows potent antibacterial activity in vitro, its ability to inhibit bacteria within mammal cells mediated by virus vector has not yet been investigated. To enhance its antimicrobial potential and reduce systemic side effects, it would be desirable to deliver CAMA-syn in macrophages by adenovirus vector. In this study,recombinant adenovirus Ad-MSP-CAMA/GFP were used to infect macrophages RAW264.7 cells in vitro and macrophages cells of lungs in vivo and the expression of CAMA-syn was detected by RT-PCR and observation of co-expression of GFP. Antimicrobial activity in cells was evaluated by colony enumeration. The results showed that expression of CAMA-syn in macrophages conferred antimicrobial activity against a series of bacteria, including E. coli and BCG(Bacillus Calmette-Guérin). To establish BCG infection animal model, 40 Kunming mice were randomly divided into the following four groups: adenoviral delivery of Ad-MSP-CAMA/GFP, Ad-CMV-CAMA/GFP, empty-virus Ad-GFP, and control PBS, respectively. The expression of CAMA-syn in mouse was confirmed by real-time PCR and GFP co-expression. In brief, 3 days after injection of adenoviral vector, mice were scarified, different tissues were sectioned and homogenized and colony-forming efficiency by these treated tissues was determined. The colony-forming efficiency of Ad-MSP-CAMA/GFP (78.31%) and Ad-CMV-CAMA/GFP (61.68%) showed significant reduction compared to control groups. No inhibition of bacterial colony was observed from tissues treated by the PBS or empty-virus control. In conclusion, our results demonstrated that macrophages-specific expression of antimicrobial peptide CAMA-syn in macrophages inhibited the growth of intracellular bacteria, providing a promise approach for the control of refractory intracellular infection.
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