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Guerin M, Qian C, Zhong Q, Cui Q, Guo Y, Bei J, Shao J, Zhu X, Huang W, Wu J, Liu R, Liu Q, Wang J, Jia W, Zheng X, Zeng Y. Translational oncology toward benefiting cancer patients: the Sun Yat-sen University Cancer Center experience. SCIENCE CHINA-LIFE SCIENCES 2017; 59:1057-1062. [PMID: 23132500 DOI: 10.1007/s11427-012-4398-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Mathilde Guerin
- Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Chaonan Qian
- Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Qian Zhong
- Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Qian Cui
- Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Yunmiao Guo
- Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Jinxin Bei
- Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Jianyong Shao
- Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Xiaofeng Zhu
- Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Wenlin Huang
- Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Jiangxue Wu
- Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Ranyi Liu
- Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Qiang Liu
- Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Jing Wang
- Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Weihua Jia
- Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Xiaohui Zheng
- Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Yixin Zeng
- Sun Yat-sen University Cancer Center, Guangzhou, 510060, China.
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Zhao P, Luo R, Wu J, Xie F, Li H, Xiao X, Fu L, Zhu X, Liu R, Zhu Y, Liang Z, Huang W. E10A, an adenovirus carrying human endostatin gene, in combination with docetaxel treatment inhibits prostate cancer growth and metastases. J Cell Mol Med 2015; 14:381-91. [PMID: 26065034 PMCID: PMC3837610 DOI: 10.1111/j.1582-4934.2008.00548.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
E10A, a replication-defective adenovirus carrying human endostatin gene, has finished Phase I clinical trials for solid cancers. We assessed whether the combination of E10A with docetaxel would enhance antiangiogenic activities and inhibit prostate cancer growth and metastases. Combination use of conditioned medium from prostate cancer cells infected by E10A and docetaxel exerted synergistic inhibition of HUVECs proliferation, migration and tube formation, compared with either agent alone. In prostate cancer s.c. xenograft models, combined therapy resulted in significant tumor growth inhibition and survival improvement. The antitumoral effect was tightly correlated with a remarkable decrease in tumor cell proliferation, microvessel, especially immature vasculature and significant increase in apoptosis induction. Systemic administration of E10A and docetaxel also effectively inhibited orthotopic growth and metastases of prostate cancer and achieved better in vivo antiangiogenic effects than either agent alone. Our data indicate that E10A in combination with docetaxel exert enhanced antiangiogenic activities and inhibit prostate cancer growth and metastases. Therefore, this approach may be an effective treatment for advanced prostate cancer and deserves more extensive investigation.
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Affiliation(s)
- Peng Zhao
- State Key Laboratory of Oncology in South China, Cancer Center, Sun Yat-sen University, Guangzhou 510060, China
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Yue PJ, He L, Shen QY, Qiu SW, Rong XM, Gong HX, Peng Y. Long-term toxicity study of rAd5-hTERTC27 in SD rats and Cynomolgus monkeys by intravenous injection. Regul Toxicol Pharmacol 2015; 71:285-94. [PMID: 25592546 DOI: 10.1016/j.yrtph.2014.12.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 12/27/2014] [Accepted: 12/29/2014] [Indexed: 11/19/2022]
Abstract
rAd5-hTERTC27, a replication-defective adenovirus vector carrying hTERTC27, has been proposed for possible use against hepatocellular carcinoma (HCC). In this study, we investigated the long-term toxicity of rAd5-hTERTC27 in SD rats and Cynomolgus monkeys. rAd5-hTERTC27 was administered intravenously once a week for 13 weeks followed by a one-month recovery period. As of 4 months, all animals displayed overall good health. Anti-adenoviral antibodies emerged in a dose-independent manner. The levels of complement components, C3 and C4, in the rAd5-hTERTC27 middle-dose and high-dose groups and C4 in the rAd5-EGFP group increased significantly after the 2nd treatment in monkeys. Slight-mild pathological changes of the liver occurred only in the rAd5-hTERTC27 high-dose group (2/16) in rats and not in any other group in either rats or monkeys. With the increase of the dose, the incidence of lymphocyte depletion in the spleen of rats and reactive hyperplasia of the splenic corpuscle in monkeys increased. However, the changes in the liver and spleen were reversible. Given the above data, intravenous administration of rAd5-hTERTC27 (up to 4×10(10)VP/kg in rats and 0.9×10(10)VP/kg in monkeys) appears to be well-tolerated, providing support for its potentially safe use in clinical trials for the treatment of HCC.
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Affiliation(s)
- Pei-jian Yue
- Department of Neurology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, No. 107, Yan Jiang Xi Road, Guangzhou 510120, China
| | - Lei He
- Department of Neurology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, No. 107, Yan Jiang Xi Road, Guangzhou 510120, China
| | - Qing-yu Shen
- Department of Neurology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, No. 107, Yan Jiang Xi Road, Guangzhou 510120, China
| | - Shu-wei Qiu
- Department of Neurology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, No. 107, Yan Jiang Xi Road, Guangzhou 510120, China
| | - Xiao-ming Rong
- Department of Neurology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, No. 107, Yan Jiang Xi Road, Guangzhou 510120, China
| | - Han-xian Gong
- Department of Neurology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, No. 107, Yan Jiang Xi Road, Guangzhou 510120, China
| | - Ying Peng
- Department of Neurology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, No. 107, Yan Jiang Xi Road, Guangzhou 510120, China; Key Laboratory of Malignant Tumor Gene Regulation and Target Therapy of Guangdong Higher Education Institutes, Sun Yat-sen University, No. 107, Yan Jiang Xi Road, Guangzhou 510120, China.
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Multicenter randomized phase 2 clinical trial of a recombinant human endostatin adenovirus in patients with advanced head and neck carcinoma. Mol Ther 2014; 22:1221-1229. [PMID: 24662947 DOI: 10.1038/mt.2014.53] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Accepted: 03/16/2014] [Indexed: 11/09/2022] Open
Abstract
A randomized, open-label, phase 2, multicenter clinical trial was conducted to evaluate the efficacy and safety of the addition of a recombinant human endostatin adenovirus (E10A) to cisplatin and paclitaxel in patients with advanced head and neck squamous cell carcinoma or nasopharyngeal carcinoma. Patients with locally advanced or metastatic head and neck squamous cell carcinoma or nasopharyngeal carcinoma not suitable for operation or radiotherapy were randomly assigned to receive E10A plus chemotherapy every 3 weeks for a maximum of six cycles or to receive chemotherapy only. One hundred and thirty-six eligible patients were randomly assigned. The addition of E10A did not significantly improve the objective response rate (29.9 versus 39.7%, P = 0.154). However, patients who received endostatin had longer progression-free survival (7.03 versus 3.60 months, P = 0.006; hazard ratio: 0.55). The combination of E10A with chemotherapy benefited prior chemotherapy-treated patients and those who received three to four treatment cycles (6.50 versus 3.43 months, P = 0.003; 8.27 versus 4.27 months, P = 0.018; respectively). The overall disease control rate significantly increased from 80.6% in the control group to 92.6% in the test group (P = 0.034). Except for fever, no adverse events were associated with the E10A treatment. In summary, E10A plus chemotherapy is a safe and effective therapeutic approach in patients with advanced head and neck squamous cell carcinoma or nasopharyngeal carcinoma.
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Hamada K, Shirakawa T, Terao S, Gotoh A, Tani K, Huang W. Biosafety studies of carrier cells infected with a replication-competent adenovirus introduced by IAI.3B promoter. MOLECULAR THERAPY-METHODS & CLINICAL DEVELOPMENT 2014; 1:14019. [PMID: 26015963 PMCID: PMC4362384 DOI: 10.1038/mtm.2014.19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Accepted: 04/15/2014] [Indexed: 01/03/2023]
Abstract
The use of carrier cells infected with oncolytic viruses in cancer gene therapy is an attractive method because it can overcome viral immunogenicity and induce tumor immunity and significant antitumor activity. To enable human clinical trials of this treatment, acute and chronic toxicity tests must first be performed to ensure safety. IAI.3B promoter, oncolytic adenovirus AdE3-IAI.3B introduced by IAI.3B promoter, and A549 carrier cells infected with AdE3-IAI.3B were highly active in cancer cells but not in normal cells. Freeze-thawing increased the antitumor effect of A549 carrier cells by promoting the translocation of oncolytic adenovirus particles from the nucleus to the cytoplasm following the rupture of the nuclear membranes. No deaths or abnormal blood test data resulted from acute toxicity tests conducted in nude mice after a single dose. In chronic toxicity tests in rabbits, there were no serious side effects after eight doses of 1.25 × 107 cells/kg or less for 4 weeks; a significant immune response is known to elicit increased numbers of antiadenovirus antibodies and enlarge the spleen. From these results, it could be concluded that cancer gene therapy of recurrent solid tumors using carrier cells can be safely trialed in humans.
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Affiliation(s)
- Katsuyuki Hamada
- Department of Obstetrics and Gynecology, School of Medicine, Ehime University , Shitsukawa, Toon, Ehime Japan
| | - Toshiro Shirakawa
- Division of Infectious Disease Control, International Center for Medical Research and Treatment, Faculty of Medicine, Kobe University Graduate School of Medicine , Kusunoki, Chuo-ku, Kobe, Hyogo, Japan
| | - Shuji Terao
- Laboratory of Cell and Gene Therapy, Institute of Advanced Medical Sciences, Hyogo College of Medicine , Mukogawa, Nishinomiya, Hyogo, Japan
| | - Akinobu Gotoh
- Laboratory of Cell and Gene Therapy, Institute of Advanced Medical Sciences, Hyogo College of Medicine , Mukogawa, Nishinomiya, Hyogo, Japan
| | - Kenzaburo Tani
- Department of Advanced Molecular and Cell Therapy, Kyushu University Hospital, Kyushu University , Maidashi, Higashi-ku, Fukuoka, Japan
| | - Wenlin Huang
- Department of Molecular Virology, Cancer Center, Sun Yat-sen University , Guangdong, China
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An oncolytic adenovirus enhances antiangiogenic and antitumoral effects of a replication-deficient adenovirus encoding endostatin by rescuing its selective replication in nasopharyngeal carcinoma cells. Biochem Biophys Res Commun 2013; 442:171-6. [PMID: 24269822 DOI: 10.1016/j.bbrc.2013.11.047] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Accepted: 11/10/2013] [Indexed: 11/23/2022]
Abstract
A replication-deficient adenovirus (Ad) encoding secreted human endostatin (Ad-Endo) has been demonstrated to have promising antiangiogenic and antitumoral effects. The E1B55k-deleted Ad H101 can selectively lyse cancer cells. In this study, we explored the antitumor effects and cross-interactions of Ad-Endo and H101 on nasopharyngeal carcinoma (NPC). The results showed that H101 dramatically promoted endostatin expression by Ad-Endo via rescuing Ad-Endo replication in NPC cells, and the expressed endostatin proteins significantly inhibited the proliferation of human umbilical vein endothelial cells. E1A and E1B19k products are required for the rescuing of H101 to Ad-Endo replication in CNE-1 and CNE-2 cells, but not in C666-1 cells. On the other hand, Ad-Endo enhanced the cytotoxicity of H101 by enhancing Ad replication in NPC cells. The combination of H101 and Ad-Endo significantly inhibited CNE-2 xenografts growth through the increased endostatin expression and Ad replication. These findings indicate that the combination of Ad-Endo gene therapy and oncolytic Ad therapeutics could be promising in comprehensive treatment of NPC.
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Li LX, Zhang YL, Zhou L, Ke ML, Chen JM, Fu X, Ye CL, Wu JX, Liu RY, Huang W. Antitumor efficacy of a recombinant adenovirus encoding endostatin combined with an E1B55KD-deficient adenovirus in gastric cancer cells. J Transl Med 2013; 11:257. [PMID: 24124726 PMCID: PMC3853970 DOI: 10.1186/1479-5876-11-257] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Accepted: 09/25/2013] [Indexed: 12/22/2022] Open
Abstract
Background Gene therapy using a recombinant adenovirus (Ad) encoding secretory human endostatin (Ad-Endo) has been demonstrated to be a promising antiangiogenesis and antitumor strategy of in animal models and clinical trials. The E1B55KD-deficient Ad dl1520 was also found to replicate selectively in and destroy cancer cells. In this study, we aimed to investigate the antitumor effects of antiangiogenic agent Ad-Endo combined with the oncolytic Ad dl1520 on gastric cancer (GC) in vitro and in vivo and determine the mechanisms of these effects. Methods The Ad DNA copy number was determined by real-time PCR, and gene expression was assessed by ELISA, Western blotting or immunohistochemistry. The anti-proliferation effect (cytotoxicity) of Ad was assessed using the colorimetry-based MTT cell viability assay. The antitumor effects were evaluated in BALB/c nude mice carrying SGC-7901 GC xenografts. The microvessel density and Ad replication in tumor tissue were evaluated by checking the expression of CD34 and hexon proteins, respectively. Results dl1520 replicated selectively in GC cells harboring an abnormal p53 pathway, including p53 mutation and the loss of p14ARF expression, but did not in normal epithelial cells. In cultured GC cells, dl1520 rescued Ad-Endo replication, and dramatically promoted endostatin expression by Ad-Endo in a dose- and time-dependent manner. In turn, the addition of Ad-Endo enhanced the inhibitory effect of dl1520 on the proliferation of GC cells. The transgenic expression of Ad5 E1A and E1B19K simulated the rescue effect of dl1520 supporting Ad-Endo replication in GC cells. In the nude mouse xenograft model, the combined treatment with dl1520 and Ad-Endo significantly inhibited tumor angiogenesis and the growth of GC xenografts through the increased endostatin expression and oncolytic effects. Conclusions Ad-Endo combined with dl1520 has more antitumor efficacy against GC than Ad-Endo or dl1520 alone. These findings indicate that the combination of Ad-mediated antiangiogenic gene therapy and oncolytic Ad therapeutics could be one of promising comprehensive treatment strategies for GC.
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Affiliation(s)
- Li-xia Li
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, China.
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Yue PJ, He L, Li Y, Shen QY, Li M, Huang DQ, Huang JJ, Peng Y. Preclinical safety evaluation of rAd5-hTERTC27 by intravenous injection. Regul Toxicol Pharmacol 2013; 67:53-62. [PMID: 23827714 DOI: 10.1016/j.yrtph.2013.06.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Revised: 06/20/2013] [Accepted: 06/24/2013] [Indexed: 10/26/2022]
Abstract
The safety of rAd5-hTERTC27, a replication defective adenovirus vector carrying hTERTC27 for possible use against hepatocellular carcinoma (HCC) was assessed. In single-dose evaluations, intravenous dose levels of up to 2×10(11)VP/kg in rats and 9×10(10)VP/kg in monkeys were well tolerated with no abnormal changes in general signs, body weight and food consumption, and no significant differences in biochemical parameters, urinalysis, ECG, and systemic necropsy observations between the rAd5 groups and solvent control group except that slight hematological change was observed. No hemolytic effect using rabbit blood, local perivasculitis following intravenous injection in rabbits or systemic anaphylaxis in guinea pigs following intravenous dosing was seen. No effects on the central nervous system of mice occurred following intravenous dosing with the exception of an increase in sleep duration at the dose of 1.2×10(11)VP/kg (p<0.05) but not at lower doses of 2×10(10) and 6×10(10)VP/kg in the hypnotic synergism test. These results demonstrate that administration of rAd5-hTERTC27 was well tolerated in an initial set of safety studies as part of an evaluation to allow human trials for the treatment of HCC.
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Affiliation(s)
- Pei-jian Yue
- Department of Neurology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, 107#, Yan Jiang Xi Road of Guangzhou, Guangzhou City 510120, China
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Chen S, Guo D, Guo B, Liu J, Shen Y, Xu X, Huang W, Guo S. Investigation on formulation and preparation of adenovirus encoding human endostatin lyophilized powders. Int J Pharm 2012; 427:145-52. [PMID: 22234038 DOI: 10.1016/j.ijpharm.2011.12.056] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2011] [Revised: 12/16/2011] [Accepted: 12/29/2011] [Indexed: 10/14/2022]
Abstract
A recombinant adenovirus encoding human endostatin gene, E10A, has finished phase II trials for head and neck cancer. However, the rigid storage temperature (-80°C) and the toxicity of glycerol in the E10A liquid preparation limited its clinical application. In this study, lyophilization was applied to develop a stable E10A lyophilized powder without glycerol that is able to maintain biological activity at 4°C and suitable for intravenous administration. The E10A lyophilized formulations composed of nontoxic and already clinically used excipients were characterized in terms of the pH change during freezing, the eutectic melting temperature (T(eu)) and the collapse temperature (T(c)). Freeze thawing tests were carried out to examine the protective effect of various excipients during freezing. Mannitol and its combinations with sucrose or inulin showed effective protection of E10A. The E10A lyophilized powders were analyzed by particle size measurement, residual humidity quantification, infectivity assay and gene expression level. An optimized formulation (formulation I1) yielded a good recovery of 76% of the starting infectivity after lyophilization and 89% of the original infectivity after storage at 4°C for 180 days. Also the gene expression capability of E10A in formulation I1 was maintained after lyophilization. In addition, it was found that the matrix of amorphous excipients, mannitol combinations with sucrose or inulin, was indispensible in protecting E10A against the stress of freezing and dehydration. Hereby, the E10A lyophilized powder with eliminated glycerol toxicity and improved stability could enhance the applicability of E10A for cancer gene therapy through intravenous administration.
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Affiliation(s)
- Shuangning Chen
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China
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Therapeutic effects of recombinant human endostatin adenovirus in a mouse model of malignant pleural effusion. J Cancer Res Clin Oncol 2009; 135:1149-57. [PMID: 19219619 DOI: 10.1007/s00432-009-0555-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2008] [Accepted: 01/22/2009] [Indexed: 02/05/2023]
Abstract
PURPOSE Malignant pleural effusion (MPE) is a common clinical problem in patients with advanced cancer. Evidence suggests that tumor-mediated angiogenesis and enhanced vascular permeability in the pleural wall are due to high levels of vascular endothelial growth factor (VEGF), which plays an important role in the pathogenesis of MPE. The present study was designed to test whether the recombinant adenovirus-mediated delivery of human endostatin (Ad-hEndo), one of the potent inhibitors of angiogenesis, would inhibit the formation and progression of MPE. METHODS We developed a novel mouse model of MPE by injecting Lewis lung carcinoma (LLC) cells directly into pleural cavity of C57BL/6 mice. To evaluate the therapeutic effects of endostatin in this MPE model, we injected the Ad-hEndo into the pleural cavity of MPE-bearing mice three times with the 3-day interval. RESULTS We found that this treatment resulted in significant reduction in pleural effusion volume, the number of pleural tumor foci, microvessel density, and vascular permeability, while it significantly prolonged the survival time. In addition, VEGF level of MPE in the group administered with the Ad-hEndo was obviously decreased as compared with that in the two control groups administered with null-adenovirus (Ad-null) or normal saline. CONCLUSIONS Our work provides a rationale for future studies toward evaluating the effectiveness of the adenovirus-based endostatin therapy for MPE.
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Mellon MJ, Bae KH, Steding CE, Jiménez JA, Kao C, Gardner TA. Suppression of renal cell carcinoma growth and metastasis with sustained antiangiogenic gene therapy. Hum Gene Ther 2008; 19:487-95. [PMID: 18507514 DOI: 10.1089/hum.2007.135] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Renal cell carcinoma (RCC) is the third most common urologic neoplasm. This aggressive malignancy has proven refractory to conventional treatment options. Antiangiogenic agents have shown early success in treating metastatic disease. The highly vascular nature of RCC appears particularly susceptible to this approach. This study investigates the potential of sustained expression of an endostatin-angiostatin fusion protein in an early-stage model of RCC to inhibit tumor growth and metastasis. Subcutaneous RCC-29 tumors were induced in athymic nude mice. Once tumors reached volumes of 10 and 25 mm(3), subjects received intratumoral injections of a nonreplicating adenoviral vector every 20 days until the conclusion of the trial. The mice were randomly assigned to three treatment groups: saline control, viral Ad-GFP control, and Ad-EndoAngio. Tumor volumes were measured twice weekly for 80 days. During days 40-50 of the trial, subjects underwent dual-photon optical imaging of the tumor vasculature to ascertain angiogenic changes. All animals underwent postmortem histopathological analysis to assess for metastatic disease in the kidney, lung, liver, brain, and spleen. Results indicate that tumors treated with Ad-EndoAngio displayed 97% growth reduction compared with controls (p < 0.001). Further, in vivo tumor vascular imaging illustrated a reduction in blood vessel number and lumen diameter size. Kaplan-Meier analysis suggested dramatic survival advantage with Ad-EndoAngio treatment. Importantly, histopathological examination demonstrated marked lung and liver metastasis suppression in the treatment arms. These results suggest that sustained EndoAngio gene therapy has effective antiangiogenic action against human RCC tumors and possesses potential as a novel treatment for metastatic renal cell carcinoma.
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Affiliation(s)
- Matthew J Mellon
- Department of Urology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
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