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Zhang P, Du J, Guo X, Wu S, He J, Li X, Shen L, Chen L, Li B, Zhang J, Xie Y, Niu L, Jiang D, Li X, Zhang S, Zhu L. LncMyoD Promotes Skeletal Myogenesis and Regulates Skeletal Muscle Fiber-Type Composition by Sponging miR-370-3p. Genes (Basel) 2021; 12:genes12040589. [PMID: 33920575 PMCID: PMC8072939 DOI: 10.3390/genes12040589] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/12/2021] [Accepted: 04/15/2021] [Indexed: 02/06/2023] Open
Abstract
The development of skeletal muscle is a highly ordered and complex biological process. Increasing evidence has shown that noncoding RNAs, especially long-noncoding RNAs (lncRNAs) and microRNAs, play a vital role in the development of myogenic processes. In this study, we observed that lncMyoD regulates myogenesis and changes myofiber-type composition. miR-370-3p, which is directly targeted by lncMyoD, promoted myoblast proliferation and inhibited myoblast differentiation in the C2C12 cell line, which serves as a valuable model for studying muscle development. In addition, the inhibition of miR-370-3p promoted fast-twitch fiber transition. Further analysis indicated that acyl-Coenzyme A dehydrogenase, short/branched chain (ACADSB) is a target gene of miR-370-3p, which is also involved in myoblast differentiation and fiber-type transition. Furthermore, our data suggested that miR-370-3p was sponged by lncMyoD. In contrast with miR-370-3p, lncMyoD promoted fast-twitch fiber transition. Taken together, our results suggest that miR-370-3p regulates myoblast differentiation and muscle fiber transition and is sponged by lncMyoD.
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Affiliation(s)
- Peiwen Zhang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (P.Z.); (J.D.); (X.G.); (S.W.); (J.H.); (X.L.); (L.S.); (L.C.); (B.L.); (J.Z.); (Y.X.); (L.N.); (D.J.); (X.L.); (S.Z.)
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Jingjing Du
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (P.Z.); (J.D.); (X.G.); (S.W.); (J.H.); (X.L.); (L.S.); (L.C.); (B.L.); (J.Z.); (Y.X.); (L.N.); (D.J.); (X.L.); (S.Z.)
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Xinyu Guo
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (P.Z.); (J.D.); (X.G.); (S.W.); (J.H.); (X.L.); (L.S.); (L.C.); (B.L.); (J.Z.); (Y.X.); (L.N.); (D.J.); (X.L.); (S.Z.)
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Shuang Wu
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (P.Z.); (J.D.); (X.G.); (S.W.); (J.H.); (X.L.); (L.S.); (L.C.); (B.L.); (J.Z.); (Y.X.); (L.N.); (D.J.); (X.L.); (S.Z.)
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Jin He
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (P.Z.); (J.D.); (X.G.); (S.W.); (J.H.); (X.L.); (L.S.); (L.C.); (B.L.); (J.Z.); (Y.X.); (L.N.); (D.J.); (X.L.); (S.Z.)
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Xinrong Li
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (P.Z.); (J.D.); (X.G.); (S.W.); (J.H.); (X.L.); (L.S.); (L.C.); (B.L.); (J.Z.); (Y.X.); (L.N.); (D.J.); (X.L.); (S.Z.)
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Linyuan Shen
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (P.Z.); (J.D.); (X.G.); (S.W.); (J.H.); (X.L.); (L.S.); (L.C.); (B.L.); (J.Z.); (Y.X.); (L.N.); (D.J.); (X.L.); (S.Z.)
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Lei Chen
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (P.Z.); (J.D.); (X.G.); (S.W.); (J.H.); (X.L.); (L.S.); (L.C.); (B.L.); (J.Z.); (Y.X.); (L.N.); (D.J.); (X.L.); (S.Z.)
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Bohong Li
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (P.Z.); (J.D.); (X.G.); (S.W.); (J.H.); (X.L.); (L.S.); (L.C.); (B.L.); (J.Z.); (Y.X.); (L.N.); (D.J.); (X.L.); (S.Z.)
| | - Jingjun Zhang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (P.Z.); (J.D.); (X.G.); (S.W.); (J.H.); (X.L.); (L.S.); (L.C.); (B.L.); (J.Z.); (Y.X.); (L.N.); (D.J.); (X.L.); (S.Z.)
| | - Yuhao Xie
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (P.Z.); (J.D.); (X.G.); (S.W.); (J.H.); (X.L.); (L.S.); (L.C.); (B.L.); (J.Z.); (Y.X.); (L.N.); (D.J.); (X.L.); (S.Z.)
| | - Lili Niu
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (P.Z.); (J.D.); (X.G.); (S.W.); (J.H.); (X.L.); (L.S.); (L.C.); (B.L.); (J.Z.); (Y.X.); (L.N.); (D.J.); (X.L.); (S.Z.)
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Dongmei Jiang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (P.Z.); (J.D.); (X.G.); (S.W.); (J.H.); (X.L.); (L.S.); (L.C.); (B.L.); (J.Z.); (Y.X.); (L.N.); (D.J.); (X.L.); (S.Z.)
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Xuewei Li
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (P.Z.); (J.D.); (X.G.); (S.W.); (J.H.); (X.L.); (L.S.); (L.C.); (B.L.); (J.Z.); (Y.X.); (L.N.); (D.J.); (X.L.); (S.Z.)
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Shunhua Zhang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (P.Z.); (J.D.); (X.G.); (S.W.); (J.H.); (X.L.); (L.S.); (L.C.); (B.L.); (J.Z.); (Y.X.); (L.N.); (D.J.); (X.L.); (S.Z.)
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Li Zhu
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (P.Z.); (J.D.); (X.G.); (S.W.); (J.H.); (X.L.); (L.S.); (L.C.); (B.L.); (J.Z.); (Y.X.); (L.N.); (D.J.); (X.L.); (S.Z.)
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
- Correspondence:
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Ito T, Okuda T, Takashima Y, Okamoto H. Naked pDNA Inhalation Powder Composed of Hyaluronic Acid Exhibits High Gene Expression in the Lungs. Mol Pharm 2019; 16:489-497. [PMID: 30092131 DOI: 10.1021/acs.molpharmaceut.8b00502] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Gene therapy is a breakthrough treatment strategy against several intractable and lethal diseases that previously lacked established treatments. Viral and nonviral vectors have been studied to realize higher gene transfection efficiencies and to suppress the degradation of gene by nucleolytic enzymes in vivo. However, it is often the case that the addition of a vector results in adverse effects. In this study, we identified formulations of dry naked plasmid DNA (pDNA) powders with no vector showing significantly higher gene expression than pDNA solutions including vectors such as polyethylenimine (PEI) in the lungs of mice. We prepared the naked pDNA powders by spray-freeze-drying with various excipients. The gene expression of naked pDNA powders exceeded those of pDNA solutions containing PEI, naked pDNA solution, and reconstituted pDNA powder. Gene expression of each naked pDNA powder was dependent on the composition of excipients. Among them, the mice that were administered the pDNA powder composed of low-molecular-weight hyaluronic acid (LHA) as an excipient showed the highest gene expression. The lactate dehydrogenase activity and concentration of inflammatory cytokines in bronchoalveolar lavage fluid were comparable to those caused by ultrapure water. The results suggest that useful dry naked nucleic acid powders for inhalation could be created by optimizing the excipients, offering new insights into the development of pulmonary gene therapy.
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Affiliation(s)
- Takaaki Ito
- Department of Drug Delivery Research, Faculty of Pharmacy , Meijo University , 150 Yagotoyama , Tempaku-ku, Nagoya 468-8503 , Japan
| | - Tomoyuki Okuda
- Department of Drug Delivery Research, Faculty of Pharmacy , Meijo University , 150 Yagotoyama , Tempaku-ku, Nagoya 468-8503 , Japan
| | - Yoshimasa Takashima
- Department of Drug Delivery Research, Faculty of Pharmacy , Meijo University , 150 Yagotoyama , Tempaku-ku, Nagoya 468-8503 , Japan
| | - Hirokazu Okamoto
- Department of Drug Delivery Research, Faculty of Pharmacy , Meijo University , 150 Yagotoyama , Tempaku-ku, Nagoya 468-8503 , Japan
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Ho JK, White PJ, Pouton CW. Self-Crosslinking Lipopeptide/DNA/PEGylated Particles: A New Platform for DNA Vaccination Designed for Assembly in Aqueous Solution. MOLECULAR THERAPY. NUCLEIC ACIDS 2018; 12:504-517. [PMID: 30195787 PMCID: PMC6077166 DOI: 10.1016/j.omtn.2018.05.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 05/20/2018] [Accepted: 05/30/2018] [Indexed: 12/31/2022]
Abstract
Delivery of plasmids for gene expression in vivo is an inefficient process that requires improvement and optimization to unlock the clinical potential of DNA vaccines. With ease of manufacture and biocompatibility in mind, we explored condensation of DNA in aqueous solution with a self-crosslinking, endosome-escaping lipopeptide (LP), stearoyl-Cys-His-His-Lys-Lys-Lys-amide (stearoyl-CH2K3), to produce cationic LP/DNA complexes. To test whether poly(ethylene glycol) (PEG)-ylation of these cationic complexes to neutralize the surface charge would improve the distribution, gene expression, and immune responses poly(ethylene glycol), these LP/DNA complexes were combined with 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-[methoxy(polyethylene glycol)-2000] (DSPE-PEG2000). Fluorescence imaging illustrated that the cationic complexes exhibited the highest degree of localization and lowest degree of dispersion throughout the injected muscle, suggesting impaired mobility of cationic particles upon administration. Nanoluciferase reporter assays over a 90-day period demonstrated that gene expression levels in muscle were highest for PEGylated particles, with over a 200-fold higher level of expression than the cationic particles observed at 30 days. Humoral and cell-mediated immune responses were evaluated in vivo after injection of an ovalbumin expression plasmid. PEGylation improved both immune responses to the DNA complexes in mice. Overall, this suggests that PEGylation of cationic lipopeptide complexes can significantly improve both the transgene expression and immunogenicity of intramuscular DNA vaccines.
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Affiliation(s)
- Joan K Ho
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), Melbourne, VIC, Australia
| | - Paul J White
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), Melbourne, VIC, Australia
| | - Colin W Pouton
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), Melbourne, VIC, Australia.
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Luo X, Andres ML, Timiryasova TM, Fodor I, Slater JM, Gridley DS. Radiation-enhanced Endostatin Gene Expression and Effects of Combination Treatment. Technol Cancer Res Treat 2016; 4:193-202. [PMID: 15773788 DOI: 10.1177/153303460500400208] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Targeting cells that support tumor growth by administering potent angiogenesis inhibitors is currently an area of intense interest. In the present study, a unique plasmid vector for the mouse endostatin gene, pXLG-mEndo, was constructed and evaluated with and without radiation using the Lewis lung carcinoma (LLC) cell line. The physical properties of the expressed endostatin protein were validated by PCR, gel electrophoresis, and Western blot. Enzyme-linked immunosorbent and immunocytochemical analyses for the therapeutic gene demonstrated that transfected LLC cells secreted the protein into the medium. Exposure of the cells to 2 gray (Gy) γ-rays reduced the time to reach the maximum expression level of the endostatin gene and also increased the amount of secreted endostatin protein (P<0.001). Biological activity of the endostatin was demonstrated by the inhibition of tube formation by human umbilical vein endothelial cells (HUVEC). Based on 3 H-thymidine incorporation, endostatin expression significantly depressed DNA synthesis in HUVEC and LLC cells compared to controls transfected with parental vector or no vector (P>0.005). In addition, radiation increased the efficiency of endostatin-mediated inhibition of both cell types over a 3-day period post-exposure (P<0.05 or less). Intratumoral injection of 100 μg pXLG-mEndo combined with 10 Gy radiation significantly delayed LLC tumor growth, especially when each modality was delivered twice (P<0.05 or less compared to all other groups). No toxicity was observed. These findings are very promising and suggest that endostatin therapy with a plasmid vector, such as pXLG-mEndo, may enhance the efficacy of radiotherapy for lung cancer.
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Affiliation(s)
- Xian Luo
- Department of Radiation Medicine, Chan Shun Pavilion, Room A-1010, 11175 Campus Street, Loma Linda University Medical Center, Loma Linda, CA 92354, USA
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Amit D, Hochberg A. Development of targeted therapy for bladder cancer mediated by a double promoter plasmid expressing diphtheria toxin under the control of H19 and IGF2-P4 regulatory sequences. J Transl Med 2010; 8:134. [PMID: 21162716 PMCID: PMC3016259 DOI: 10.1186/1479-5876-8-134] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2010] [Accepted: 12/16/2010] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND The human IGF2-P4 and H19 promoters are highly active in a variety of human cancers (including bladder cancer), while existing at a nearly undetectable level in the surrounding normal tissue.Single promoter vectors expressing diphtheria toxin A-fragment (DTA) under the control regulation of IGF2-P4 or H19 regulatory sequences (IGF2-P4-DTA and H19-DTA) were previously successfully used in cell lines, animal models and recently in human patients with superficial cell carcinoma of the bladder (treated with H19-DTA). However this targeted medicine approach could be limited, as not all cancer patients express high levels of H19. Hence, a double promoter DTA-expressing vector was created, carrying on a single construct two separate genes expressing the diphtheria toxin A-fragment (DTA), from two different regulatory sequences, selected from the cancer-specific promoters H19 and IGF2-P4. METHODS H19 and IGF2-P4 gene expression was tested in samples of Transitional Cell Carcinoma (TCC) of the bladder by in-situ hybridization (ISH) and by quantitative Real-Time PCR (qRT-PCR). The therapeutic potential of the double promoter toxin vector H19-DTA-IGF2-P4-DTA was tested in TCC cell lines and in heterotopic and orthotopic animal models of bladder cancer. RESULTS Nearly 100% of TCC patients highly expressed IGF2-P4 and H19, as determined by ISH and by qRT-PCR. The double promoter vector exhibited superior tumor growth inhibition activity compared to the single promoter expression vectors, in cell lines and in heterotopic and orthotopic bladder tumors. CONCLUSIONS Our findings show that bladder tumors may be successfully treated by intravesical instillation of the double promoter vector H19-DTA-P4-DTA.Overall, the double promoter vector exhibited enhanced anti-cancer activity relative to single promoter expression vectors carrying either gene alone.
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Affiliation(s)
- Doron Amit
- The Hebrew University of Jerusalem, Biological Chemistry, Jerusalem 91904, Israel.
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Gene Transfer: How Can the Biological Barriers Be Overcome? J Membr Biol 2010; 236:61-74. [DOI: 10.1007/s00232-010-9275-0] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2010] [Accepted: 06/11/2010] [Indexed: 10/19/2022]
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Caysa H, Jacob R, Müther N, Branchini B, Messerle M, Söling A. A redshifted codon-optimized firefly luciferase is a sensitive reporter for bioluminescence imaging. Photochem Photobiol Sci 2008; 8:52-6. [PMID: 19247529 DOI: 10.1039/b814566k] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Bioluminescence imaging has evolved as a powerful tool for monitoring biological processes in vivo. As transmission efficiency of light through tissue increases greatly for wavelengths above 600 nm we examined whether a redshifted codon-optimized firefly luciferase (lambdamax=615 nm) could be successfully employed as a sensitive reporter in mammalian cells. To this end, unmodified codon-optimized luciferase (lambdamax=557 nm) as well as the red-emitting S284T mutant luciferase were expressed simultaneously in human glioma cells in vitro as well as in quadriceps muscles of mice in vivo. We show here that activity of the redshifted enzyme in human glioma cell culture approached approximately one-fourth of that seen with the unmodified enzyme. In contrast, light emission by the red-emitting luciferase in vivo was generally more efficient than that produced by its unmodified counterpart, most likely due to reduced absorption of red light by tissue. The mean ratio of light emission produced by the redshifted luciferase to that of the unmodified enzyme in vivo was approximately 3. Application of this new redshifted luciferase together with other optical reporters may be of considerable importance to biological research as it allows for imaging of deeper tissues as well as simultaneous monitoring of two molecular events in vitro and in vivo if appropriate filter sets are employed.
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Affiliation(s)
- Henrike Caysa
- Department of Medicine IV, Martin Luther University Halle-Wittenberg, Halle, Germany
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Henshaw JW, Yuan F. Field distribution and DNA transport in solid tumors during electric field-mediated gene delivery. J Pharm Sci 2008; 97:691-711. [PMID: 17624918 DOI: 10.1002/jps.21000] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Gene therapy has a great potential in cancer treatment. However, the efficacy of cancer gene therapy is currently limited by the lack of a safe and efficient means to deliver therapeutic genes into the nucleus of tumor cells. One method under investigation for improving local gene delivery is based on the use of pulsed electric field. Despite repeated demonstration of its effectiveness in vivo, the underlying mechanisms behind electric field-mediated gene delivery remain largely unknown. Without a thorough understanding of these mechanisms, it will be difficult to further advance the gene delivery. In this review, the electric field-mediated gene delivery in solid tumors will be examined by following individual transport processes that must occur in vivo for a successful gene transfer. The topics of examination include: (i) major barriers for gene delivery in the body, (ii) distribution of electric fields at both cell and tissue levels during the application of external fields, and (iii) electric field-induced transport of genes across each of the barriers. Through this approach, the review summarizes what is known about the mechanisms behind electric field-mediated gene delivery and what require further investigations in future studies.
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Affiliation(s)
- Joshua W Henshaw
- Department of Biomedical Engineering, Duke University, 136 Hudson Hall, Durham, North Carolina 27708, USA
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Leblond J, Mignet N, Largeau C, Spanedda MV, Seguin J, Scherman D, Herscovici J. Lipopolythioureas: A New Non-Cationic System for Gene Transfer. Bioconjug Chem 2007; 18:484-93. [PMID: 17373770 DOI: 10.1021/bc060141b] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A DNA-transfection protocol has been developed that makes use of thiourea non-cationic synthetic lipid, N-[1,3-bis(carbamothioylamino)propan-2-yl]-2-(dialkycarbamoylmethoxy)acetamide. It was found that these new compounds could be formulated without helper lipid and that the N-decanoyl and N-lauryl derivatives transfected B16 cells in the presence of serum with an efficiency at the same level as cationic lipids, under identical conditions. In vivo transfection using intratumoral injection was also investigated. It was found that compounds 18c and 19 showed an efficiency of the same magnitude as naked DNA and cationic lipid.
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Affiliation(s)
- Jeanne Leblond
- Inserm, U640, Paris, F-75006, CNRS, UMR8151, Paris, F-75006, Ecole Nationale Supérieure de Chimie de Paris, Paris, France
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Duvshani-Eshet M, Machluf M. Efficient transfection of tumors facilitated by long-term therapeutic ultrasound in combination with contrast agent: from in vitro to in vivo setting. Cancer Gene Ther 2007; 14:306-15. [PMID: 17218948 DOI: 10.1038/sj.cgt.7701015] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Therapeutic ultrasound (TUS) is a promising non-viral clinical approach for the delivery of genes. This study demonstrates the efficient delivery and localization of DNA in subcutaneous tumors facilitated by TUS application and examines the contribution of ultrasound contrast-agent (USCA) addition on transfection. The study addresses the importance of in vivo optimization when using long-term TUS and USCA based on data achieved in vitro. In vitro results showed that transfection of TrampC2 prostate cancer (Pca) cells using genes encoding for luciferase and green fluorescent protein was enhanced when DNA and Optison were added together and TUS was applied for 20 or 30 min. In vivo results showed that the highest transfection was achieved when Optison and DNA were co-injected intratumorally, and TUS was applied for 20 min. Using Optison significantly increased protein distribution in the tumor. However, in vivo expression level was decreased by two and four fold at 7 and 14 days, respectively, post-TUS. The study establishes the potential of intratumoral delivery of DNA-Optison, followed by TUS as an effective, non-toxic, gene delivery method that could provide a safe, clinical alternative to current viral gene delivery approaches where short-term gene expression is needed.
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Affiliation(s)
- M Duvshani-Eshet
- The Faculty of Biotechnology and Food Engineering, The Technion -Israel Institute of Technology, Haifa, Israel
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Walther W, Minow T, Martin R, Fichtner I, Schlag PM, Stein U. Uptake, biodistribution, and time course of naked plasmid DNA trafficking after intratumoral in vivo jet injection. Hum Gene Ther 2006; 17:611-24. [PMID: 16776570 DOI: 10.1089/hum.2006.17.611] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Nonviral jet injection is an applicable technology for in vivo gene transfer of naked DNA. However, little is known about the biodistribution and clearance of jet-injected DNA, or about its localization within tissue and cells. Therefore, in this study we analyzed the intratumoral and systemic biodistribution of jet-injected naked DNA in human colon carcinoma-bearing NCr-nu/nu mice, which were jet-injected with the pCMVbeta plasmid DNA. Intratumoral and systemic plasmid DNA biodistribution was analyzed 5, 10, 20, and 40 min and 3, 6, 24, 48, and 72 hr after jet injection, using quantitative real-time polymerase chain reaction. In the tumors, a rapid drop in naked DNA load within 24 hr of jet injection was shown. Detailed analysis of intratumoral distribution of rhodamine-labeled DNA revealed the presence of plasmid DNA within tumor cells 5 min after jet injection and further accumulation of significant DNA amounts in the cell nuclei 30 to 60 min after jet injection. In the blood, DNA amounts rapidly dropped within 10 to 40 min of jet injection to less than 0.001 pg of plasmid per 250 ng of tissue DNA and only minimal plasmid DNA dissemination was detected in liver, lung, spleen, kidney, and ovaries, which was cleared 3 to 6 hr after jet injection. By contrast, in heart, bone marrow, and brain almost no plasmid DNA was detectable.
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Affiliation(s)
- W Walther
- Max Delbrück Center for Molecular Medicine, 13092 Berlin, Germany.
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Walther W, Minow T, Martin R, Fichtner I, Schlag P, Stein U. Uptake, Biodistribution, and Time Course of Naked Plasmid DNA Trafficking After Intratumoral In Vivo Jet Injection. Hum Gene Ther 2006. [DOI: 10.1089/hum.2006.17.ft-207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Luo X, Slater JM, Gridley DS. Enhancement of radiation effects by pXLG-mEndo in a lung carcinoma model. Int J Radiat Oncol Biol Phys 2005; 63:553-64. [PMID: 15964154 DOI: 10.1016/j.ijrobp.2005.01.038] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2004] [Revised: 01/19/2005] [Accepted: 01/19/2005] [Indexed: 12/20/2022]
Abstract
PURPOSE Endostatin is a potent antiangiogenesis protein with little or no toxicity that has potential to enhance radiotherapy. The major goal of this study was to evaluate the combination of radiation and endostatin gene therapy in a preclinical lung cancer model. METHODS Plasmid pXLG-mEndo, constructed in our laboratory, includes the mouse endostatin gene cloned into the pWS4 vector. The kinetics of endostatin expression and efficacy of the pXLG-mEndo and radiation ((60)Co gamma-rays) combination was evaluated in the C57BL/6 mouse-Lewis lung carcinoma (LLC) model. The LLC cells were implanted s.c. and pXLG-mEndo was injected intratumorally 12-14 days later without any transfection agent; a dose of 10 Gy radiation was applied approximately 16 h thereafter. Some groups received each modality twice. Endostatin, vascular endothelial growth factor (VEGF), and transforming growth factor-beta1 (TGF-beta1) were quantified in plasma and tumors, and tumor vasculature was examined. RESULTS Endostatin expression within LLC tumors peaked on Day 7 after pXLG-mEndo injection. Addition of radiation to pXLG-mEndo significantly enhanced the level of tumor endostatin compared with plasmid alone (p < 0.05). Tumor growth was significantly delayed in mice receiving pXLG-mEndo plus radiation compared with no treatment (p < 0.005), radiation (p < 0.05), and control plasmid (p < 0.05). The number of LLC tumor vessels was reduced after combined treatment (p < 0.05), and significant treatment-related changes were observed in both VEGF and TGF-beta1. CONCLUSIONS The data demonstrate that delivery of endostatin by pXLG-mEndo as an adjuvant to radiation can significantly enhance the antitumor efficacy of radiotherapy in the LLC mouse tumor model and support further investigation of this unique combination therapy.
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Affiliation(s)
- Xian Luo
- Department of Biochemistry and Microbiology, Loma Linda University and Medical Center, Loma Linda, CA 92354, USA
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Kawase A, Kobayashi N, Isaji K, Nishikawa M, Takakura Y. Manipulation of local disposition and gene expression characteristics of plasmid DNA following intramuscular administration by complexation with cationic macromolecule. Int J Pharm 2005; 293:291-301. [PMID: 15778067 DOI: 10.1016/j.ijpharm.2004.12.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2004] [Revised: 12/05/2004] [Accepted: 12/29/2004] [Indexed: 11/20/2022]
Abstract
To modulate the immune responses of DNA vaccine, it is very important to control the disposition and gene expression of plasmid DNA (pDNA) after local administration. We chose methylated bovine serum albumin (mBSA), a cationic macromolecule, as a carrier of pDNA. We examined the effects of complexation of pDNA with mBSA on the disposition and gene expression in mice after intramuscular administration. The elimination from injection site was retarded and the accumulation to lymph nodes was increased at the positively charged mBSA/pDNA complexes. As the charge ratios of mBSA/pDNA complexes were higher, the levels of gene expression were reduced. Antigen specific immune responses were evaluated using pDNA encoding ovalbumin (OVA), pCMV-OVA, as a model antigen-expressing pDNA. However, significant levels of production of anti-ovalbumin IgG antibody were obtained in mice immunized with a positively charged complex, mBSA/pCMV-OVA (8:1) (weight ratio). In vitro experiments using DC2.4 cells, a murine dendritic cell line, demonstrated that the levels of gene expression and cytokine release were increased by complexation. These results suggest that the immune responses might be manipulated by complexation presumably due to the altered disposition and gene expression of pDNA.
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Affiliation(s)
- Atsushi Kawase
- Department of Biopharmaceutics and Drug Metabolism Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
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