Abstract:
:This study focuses on the design, construction, and evaluation of a chimeric promoter for gene therapy applications where it is desirable to have low-level basal expression of the newly transferred gene, which can be induced to higher levels of expression by the administration of pharmacologic agents that can be safely used locally and/or systemically in humans. To achieve this, a chimeric promoter was constructed using fragments of the 5'-flanking region of the human cystic fibrosis transmembrane conductance regulator (CFTR) gene, and multiple tandem repeats of the consensus sequence and flanking elements of the cAMP response element (CRE), promoter sequences that support increased transcription in response to elevations in intracellular cAMP levels. Preliminary studies using plasmid vectors demonstrated that: (i) the 5'-flanking sequences from the CFTR gene have low promoter activity in the human airway epithelial cell lines; (ii) chimeras using -718 bp fragment from the 5'-flanking sequence of CFTR gene as the base, with the addition of 4-10 units of a 25-bp sequence containing the CRE consensus sequence, were all inducible by a rise in intracellular cAMP, with the chimera having eight CRE repeats the most responsive; and (iii) a CF126(CRE8) chjimera, consisting of the -126 bp fragment from the 5'-flanking region of CFTR gene together with eight CRE repeats, yielded low-level basal activity but maximal upregulation by cAMP, resulting in expression of the reporter gene that was 51-58% of an RSV-LTR control. On the basis of these observations, replication-deficient adenoviral vectors containing the CF126(CRE8) chimera and the luciferase reporter gene [AdCF126(CRE8).Luc] or the Escherichia coli lacZ (beta-Gal) reporter gene [AdCF126(CRE8). beta gal] were constructed. In several human airway epithelial cell lines, the AdCF126 (CRE). Luc vector provided low basal activity, but was significantly upregulated by agents that increase cAMP levels. Intranasal administration of the beta-Gal-expressing AdCF126(CRE8) beta gal vector into C57B1/6 mice demonstrated cAMP-induced upregulation of the reporter gene in airway epithelial cells. Quantification of the inducibility of the basal promoter activity in the airway epithelium using the AdCF126(CRE8). Luc vector demonstrated an 11-fold upregulation of the basal promoter activity in the lung with the administration of a phosphodiesterase inhibitor and a cAMP analog. These observations demonstrate the feasibility of using a chimeric promoter comprised of a minimal fragment of the CFTR 5'-flanking region, together with added multiple CRE, to control genes delivered in vivo. Importantly, because there are many drugs used in humans that raise cAMP, the concept of using a cAMP-regulatable promoter may also be a useful approach to enhance the safety, efficacy, and feasibility of a variety of human gene therapy strategies.
journal_name
Hum Gene Therjournal_title
Human gene therapyauthors
Suzuki M,Singh RN,Crystal RGdoi
10.1089/hum.1996.7.15-1883subject
Has Abstractpub_date
1996-10-01 00:00:00pages
1883-93issue
15eissn
1043-0342issn
1557-7422journal_volume
7pub_type
杂志文章abstract::Eleven patients with moderate to severe erectile dysfunction (ED) were given a single-dose corpus cavernosum injection of hMaxi-K, a "naked" DNA plasmid carrying the human cDNA encoding hSlo (for human slow-poke), the gene for the alpha, or pore-forming, subunit of the human smooth muscle Maxi-K channel. Three patient...
journal_title:Human gene therapy
pub_type: 杂志文章,多中心研究
doi:10.1089/hum.2006.17.1165
更新日期:2006-12-01 00:00:00
abstract::Gene transfer for therapeutic angiogenesis represents a novel treatment for patients with chronic angina refractory to standard medical therapy and not amenable to conventional revascularization. We sought to assess the role of intraoperative multiplane transesophageal echocardiography (MPTEE) in guiding injection of ...
journal_title:Human gene therapy
pub_type: 临床试验,杂志文章
doi:10.1089/10430349950016951
更新日期:1999-09-20 00:00:00
abstract::CTL lines directed against HIV-1 antigens were generated from infected individuals and were transduced by the HMB-K(b)HuIFNbeta vector, resulting in low, constitutive expression of interferon beta (IFN-beta). The IFN-beta-transduced cells showed markedly increased HIV-1-specific, MHC class I-restricted CTL activity ag...
journal_title:Human gene therapy
pub_type: 杂志文章
doi:10.1089/10430349950017482
更新日期:1999-07-20 00:00:00
abstract::Transfer of a herpes simplex virus-derived thymidine kinase (HSV-tk) gene into brain tumor cells and subsequent ganciclovir (GCV) treatment has been shown by others to be an effective treatment in rats with intracerebrally inoculated 9L gliosarcomas. Mechanism of action and reproducibility are, however, still a matter...
journal_title:Human gene therapy
pub_type: 杂志文章
doi:10.1089/hum.1996.7.2-197
更新日期:1996-01-20 00:00:00
abstract::Bone marrow mesenchymal stem cells (BMSCs) represent an important source of cells for tissue repair. The tropism of these cells to the sites of injury and tumors has been well established. Their tumor-homing properties make BMSCs good candidates as antitumor agent delivery vehicles. In this study, we showed that BMSCs...
journal_title:Human gene therapy
pub_type: 杂志文章
doi:10.1089/hum.2010.116
更新日期:2011-04-01 00:00:00
abstract::Following in vivo recombinant adeno-associated virus (rAAV)-based gene transfer, adaptive immune responses specific to the vector or the transgene product have emerged as a potential roadblock to successful clinical translation. The occurrence of such responses depends on several parameters, including the route of vec...
journal_title:Human gene therapy
pub_type: 杂志文章
doi:10.1089/hum.2014.070
更新日期:2015-01-01 00:00:00
abstract::The use of nonionic polymeric micelles orally to protect and deliver plasmid DNA in vivo was investigated. Parathyroid hormone (PTH)(1-34) gene (179 bp) was inserted into a human cytomegalovirus promoter (PCMV) and E. coli competent cells were used to amplify the cDNA. Polymeric micelle formations (100 microl) formed ...
journal_title:Human gene therapy
pub_type: 杂志文章
doi:10.1089/hum.2009.015
更新日期:2009-11-01 00:00:00
abstract::Introduction of a new vaccine requires choosing a delivery system that provides safe administration and the desired level of immunogenicity. The safety, tolerability, and immunogenicity of three monthly 2.5-mg doses of a PfCSP DNA vaccine were evaluated in healthy volunteers as administered intramuscularly (IM) by nee...
journal_title:Human gene therapy
pub_type: 杂志文章
doi:10.1089/10430340260201644
更新日期:2002-09-01 00:00:00
abstract::Blood vessels are among the easiest targets for gene therapy. However, no data are available about the safety and feasibility of intracoronary gene transfer in humans. We studied the safety and efficacy of catheter-mediated vascular endothelial growth factor (VEGF) plasmid/liposome (P/L) gene transfer in human coronar...
journal_title:Human gene therapy
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1089/10430340050016003
更新日期:2000-01-20 00:00:00
abstract::Pancreatic cancer is the fourth leading cause of cancer-related death in the United States, and even under optimal therapy these patients face a poor prognosis. Here we report a novel gene therapy-based strategy to battle this disease. We show that the majority of pancreatic tumors overexpress c-erb-B2, which therefor...
journal_title:Human gene therapy
pub_type: 杂志文章
doi:10.1089/hum.2009.083
更新日期:2010-02-01 00:00:00
abstract::Gene therapy for hemophilia B has been shown to result in long-term expression and immune tolerance to factor IX (F.IX) after in vivo transduction of hepatocytes with adeno-associated viral (AAV-2) vectors in experimental animals. An optimized protocol was effective in several strains of mice with a factor 9 gene dele...
journal_title:Human gene therapy
pub_type: 杂志文章
doi:10.1089/hum.2008.161
更新日期:2009-07-01 00:00:00
abstract::Gene electrotransfer is gaining momentum as an efficient methodology for nonviral gene transfer. In skeletal muscle, data suggest that electric pulses play two roles: structurally permeabilizing the muscle fibers and electrophoretically supporting the migration of DNA toward or across the permeabilized membrane. To in...
journal_title:Human gene therapy
pub_type: 杂志文章
doi:10.1089/hgt.2008.060
更新日期:2008-11-01 00:00:00
abstract::The ability to control proliferation of grafted cells in the heart and consequent graft size could dramatically improve the efficacy of cell therapies for cardiac repair. To achieve targeted graft cell proliferation, we created a chimeric receptor (F36Vfgfr-1) composed of a modified FK506-binding protein (F36V) fused ...
journal_title:Human gene therapy
pub_type: 杂志文章
doi:10.1089/hum.2006.161
更新日期:2007-05-01 00:00:00
abstract::Recombinant adeno-associated virus 2 (rAAV2) has been extensively used as a gene delivery vector for the nervous system. It targets primarily neurons in the nervous system and results in sustained long-term expression of transgenes. New rAAV serotypes have been characterized and demonstrated to have improved transduct...
journal_title:Human gene therapy
pub_type: 杂志文章,评审
doi:10.1089/hum.2005.16.781
更新日期:2005-07-01 00:00:00
abstract::Targeted therapy produces objective responses in bladder cancer patients, although the responses can be short. Meanwhile, response rates to immune therapy are lower, but the effects are more durable. Based on these findings, it was hypothesized that urothelial carcinoma associated 1 (UCA1)-targeted therapy could syner...
journal_title:Human gene therapy
pub_type: 杂志文章
doi:10.1089/hum.2018.048
更新日期:2018-12-01 00:00:00
abstract::Recombinant vectors based on adeno-associated virus serotype 8 (AAV8) have been successfully used in the clinic and hold great promise for liver-directed gene therapy. Preexisting immunity against AAV8 or the development of antibodies against the therapeutic transgene product might negatively affect the outcomes of ge...
journal_title:Human gene therapy
pub_type: 杂志文章,多中心研究
doi:10.1089/hum.2014.109
更新日期:2015-03-01 00:00:00
abstract::Conditionally replicative adenovirus (CRAd) vectors are designed for specific oncolytic replication in tumor tissues with concomitant sparing of normal cells. As such, CRAds offer an unprecedented level of anticancer potential for malignancies that have been refractory to previous cancer gene therapy interventions. CR...
journal_title:Human gene therapy
pub_type: 杂志文章
doi:10.1089/10430340152710504
更新日期:2001-12-10 00:00:00
abstract::In vivo electroporation of plasmid DNA (DNA-EP) is an efficient and safe method for vaccines. It results in increased DNA uptake, enhances protein expression, and augments immune responses to the target antigen in a variety of species. To further improve the efficacy of DNA-EP, we evaluated small interfering RNA (siRN...
journal_title:Human gene therapy
pub_type: 杂志文章
doi:10.1089/hum.2008.210
更新日期:2009-06-01 00:00:00
abstract::The enzyme hypoxanthine-guanine phosphoribosyltransferase (HGPRT) expressed by the parasite Trypanosoma brucei (Tb) can convert allopurinol, a purine analogue, to corresponding nucleotides with greater efficiency than its human homologue. We have developed a retroviral system that expresses the parasitic enzyme and te...
journal_title:Human gene therapy
pub_type: 杂志文章
doi:10.1089/10430340152528165
更新日期:2001-09-01 00:00:00
abstract::Gene delivery via murine-based recombinant retroviral vectors is currently widely used in gene therapy clinical trials. The vectors are engineered to be replication defective by replacing the structural and nonstructural genes of a cloned infectious retrovirus with a therapeutic gene of interest. The retroviral partic...
journal_title:Human gene therapy
pub_type: 杂志文章
doi:10.1089/hum.1997.8.10-1231
更新日期:1997-07-01 00:00:00
abstract::As efficient and less toxic virus-derived gene therapy vectors are developed, a pressing problem is to avoid immune response to the therapeutic gene product. Secreted therapeutic proteins potentially represent a special problem, as they are readily available to professional antigen-presenting cells throughout the body...
journal_title:Human gene therapy
pub_type: 杂志文章
doi:10.1089/hum.2006.036
更新日期:2007-12-01 00:00:00
abstract::If established cultured cell lines genetically modified to secrete desired gene products could be implanted in different allogeneic recipients without immune rejection, novel gene products would be delivered more cost effectively. We tested this strategy by encapsulating mouse Ltk- cells transfected with the human gro...
journal_title:Human gene therapy
pub_type: 杂志文章
doi:10.1089/hum.1993.4.4-433
更新日期:1993-08-01 00:00:00
abstract::Severe fetal growth restriction (FGR) affects 1:500 pregnancies, is untreatable and causes serious neonatal morbidity and death. Reduced uterine blood flow (UBF) and lack of bioavailable VEGF due to placental insufficiency is a major cause. Transduction of uterine arteries in normal or FGR sheep and guinea pigs using ...
journal_title:Human gene therapy
pub_type: 杂志文章
doi:10.1089/hum.2020.006
更新日期:2020-11-01 00:00:00
abstract::The potential of short interfering RNA (siRNA) to be developed for therapeutic use against cancer depends on the availability of an efficient tumor-specific delivery vehicle. We have previously shown that a nanoscale nonviral liposome-based complex that includes an anti-transferrin receptor single-chain antibody fragm...
journal_title:Human gene therapy
pub_type: 杂志文章
doi:10.1089/hum.2006.17.117
更新日期:2006-01-01 00:00:00
abstract::Deficiency of glycogen branching enzyme (GBE) causes glycogen storage disease type IV (GSD IV), which is characterized by the accumulation of a less branched, poorly soluble form of glycogen called polyglucosan (PG) in multiple tissues. This study evaluates the efficacy of gene therapy with an adeno-associated viral (...
journal_title:Human gene therapy
pub_type: 杂志文章
doi:10.1089/hum.2016.099
更新日期:2017-03-01 00:00:00
abstract::Fibroblast-like synoviocytes (FLSs) participate in the pathogenesis of rheumatoid arthritis (RA). Emerging evidence has highlighted the role of long non-coding RNA metastasis associated lung adenocarcinoma transcript 1 (MALAT1) and its potential involvement in RA. In this study, we test the hypothesis that the MALAT1 ...
journal_title:Human gene therapy
pub_type: 杂志文章
doi:10.1089/hum.2018.212
更新日期:2019-08-01 00:00:00
abstract::Delivery of plasmid DNA can be enhanced by treatment with ultrasound (US); acoustic cavitation appears to play an important role in the process. Ultrasound contrast agents (UCAs; stabilized microbubbles) nucleate acoustic cavitation, and lower the acoustic pressure threshold for inertial cavitation occurrence. Fifty m...
journal_title:Human gene therapy
pub_type: 杂志文章
doi:10.1089/hum.2005.16.893
更新日期:2005-07-01 00:00:00
abstract::Tumor angiogenesis is a rate-limiting factor for tumor growth, and the endothelial cells of tumor vessels display specific features that can be exploited for the selective delivery of cancer therapeutics. To specifically target exogenous genes to angiogenic tumor vessels, we generated a panel of vesicular stomatitis v...
journal_title:Human gene therapy
pub_type: 杂志文章
doi:10.1089/104303403322168028
更新日期:2003-08-10 00:00:00
abstract::The objective of this phase II investigation is to assess the safety and efficacy of a plasmid mediated approach to induce angiogenesis/arteriogenesis with the angiomatrix protein Del-1 (developmentally regulated endothelial locus 1), in subjects with intermittent claudication (IC) secondary to peripheral arterial dis...
journal_title:Human gene therapy
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1089/104303404323142060
更新日期:2004-06-01 00:00:00
abstract::Atrogin-1 or muscle atrophy F-box (MAFbx) is a major atrophy-related E3 ubiquitin ligase highly expressed in skeletal muscle during muscle atrophy and other disease states such as sepsis, cancer cachexia, and fasting. In this paper, we report experiments inhibiting MAFbx activity in fasting mice and in the skeletal my...
journal_title:Human gene therapy
pub_type: 杂志文章
doi:10.1089/hum.2010.057
更新日期:2011-03-01 00:00:00