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      Oncolytic adenovirus expressing interleukin-18 improves antitumor activity of dacarbazine for malignant melanoma

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          Abstract

          Conditionally replicating adenoviruses have emerged as novel therapeutic agents for cancer. This study aimed to evaluate synergistic antitumor activity of replication-competent adenovirus armed with interleukin (IL)-18 (ZD55-IL-18) and dacarbazine (DTIC) against melanoma. Melanoma A375 cells or nude mouse tumor xenografts were treated with ZD55-IL-18 alone or together with DTIC. The results showed that ZD55-IL-18 competently replicated in A375 cells and expressed IL-18, and these were not affected by DTIC. ZD55-IL-18 enhanced the cytotoxicity of DTIC accompanied by increased apoptosis. Moreover, ZD55-IL-18 and DTIC synergistically inhibited the growth but promoted the apoptosis of A375 xenografts and inhibited vascular endothelial growth factor expression and lung metastasis in xenografts of nude mice. In conclusion, this is the first study to show synergistic anticancer activity of ZD55-IL-18 and DTIC for malignant melanoma. Our results provide evidence that chemo-gene-viro therapeutic approach has greater potential for malignant cancers than conventional chemotherapy or gene therapy.

          Most cited references19

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          The National Cancer Data Base report on cutaneous and noncutaneous melanoma: a summary of 84,836 cases from the past decade. The American College of Surgeons Commission on Cancer and the American Cancer Society.

          This study reviews the case-mix characteristics, management, and outcomes of melanoma cases occuring in the U.S. within the last decade. Analyses of the National Cancer Data Base (NCDB) were performed on cases diagnosed between 1985 through 1994. A total of 84,836 cases comprised of cutaneous and noncutaneous melanomas were evaluated. The percentages of melanomas that were cutaneous, ocular, mucosal, and unknown primaries were 91.2%, 5.2%, 1.3%, and 2.2%, respectively. For cutaneous melanomas, the proportion of patients presenting with American Joint Committee on Cancer Stages 0, I, II, III, and IV were 14.9%, 47.7%, 23.1%, 8.9%, and 5.3%, respectively. Factors associated with decreased survival included more advanced stage at diagnosis, nodular or acral lentiginous histology, increased age, male gender, nonwhite race, and lower income. Multivariate analysis identified stage, histology, gender, age, and income as independent prognostic factors. For ocular melanomas, 85.0% were uveal, 4.8% were conjunctival, and 10.2% occurred at other sites. During the study period, there was a large increase in the proportion of ocular melanoma patients treated with radiation therapy alone. For mucosal melanomas, the distribution of head and neck, female genital tract, anal/rectal, and urinary tract sites was 55.4%, 18.0%, 23.8%, and 2.8%, respectively. Patients with lymph node involvement had a poor prognosis. For unknown primary melanomas, the distribution of metastases as localized to a region or multiple sites at presentation was 43.0% and 57.0%, respectively. Surgical treatment of patients with unknown primary site of the melanoma resulted in better survival compared with no treatment. Treatment of early stage cutaneous melanoma resulted in excellent patient outcomes. In addition to conventional prognostic factors, socioeconomic factors were found to be associated with survival.
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            Randomized phase III study of temozolomide versus dacarbazine in the treatment of patients with advanced metastatic malignant melanoma.

            To compare, in 305 patients with advanced metastatic melanoma, temozolomide and dacarbazine (DTIC) in terms of overall survival, progression-free survival (PFS), objective response, and safety, and to assess health-related quality of life (QOL) and pharmacokinetics of both drugs and their metabolite, 5-(3-methyltriazen-1-yl)imidazole-4-carboximide (MTIC). Patients were randomized to receive either oral temozolomide at a starting dosage of 200 mg/m(2)/d for 5 days every 28 days or intravenous (IV) DTIC at a starting dosage of 250 mg/m(2)/d for 5 days every 21 days. In the intent-to-treat population, median survival time was 7.7 months for patients treated with temozolomide and 6.4 months for those treated with DTIC (hazards ratio, 1.18; 95% confidence interval [CI], 0.92 to 1.52). Median PFS time was significantly longer in the temozolomide-treated group (1.9 months) than in the DTIC-treated group (1.5 months) (P =.012; hazards ratio, 1.37; 95% CI, 1.07 to 1.75). No major difference in drug safety was observed. Temozolomide was well tolerated and produced a noncumulative, transient myelosuppression late in the 28-day cycle. The most common nonhematologic toxicities were mild to moderate nausea and vomiting, which were easily managed. Temozolomide therapy improved health-related QOL; more patients showed improvement or maintenance of physical functioning at week 12. Systemic exposure (area under the curve) to the parent drug and the active metabolite, MTIC, was higher after treatment with oral temozolomide than after IV administration of DTIC. Temozolomide demonstrates efficacy equal to that of DTIC and is an oral alternative for patients with advanced metastatic melanoma.
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              Re-evaluating the role of dacarbazine in metastatic melanoma: what have we learned in 30 years?

              Since dacarbazine was approved for treating metastatic melanoma in the 1970s, numerous studies have evaluated whether different schedules and dacarbazine-based combinations improve clinical outcomes. This evidence-based review shows that combining dacarbazine with other drugs having single-agent activity and/or hormonal or immunotherapeutic compounds fails to provide clinically meaningful improvements in survival, and may increase toxicity. In patients with metastatic melanoma, dacarbazine was previously administered in cycles of multiple consecutive daily infusions per cycle. The introduction of potent antiemetics, together with concerns relating to patient comfort and clinic utilisation time, has enabled regimens involving single-dose dacarbazine, administered at the same total dose per cycle. These appear to be as effective as multiple-dose schedules, are well tolerated, and are more straightforward to administer. Single-administration dacarbazine (850-1000 mg/m2), once every 3 weeks, is currently the standard reference therapy in patients with advanced melanoma. New effective therapies are urgently needed for this treatment-refractory disease.
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                Author and article information

                Journal
                Drug Des Devel Ther
                Drug Des Devel Ther
                Drug Design, Development and Therapy
                Drug Design, Development and Therapy
                Dove Medical Press
                1177-8881
                2016
                15 November 2016
                : 10
                : 3755-3761
                Affiliations
                [1 ]Department of Urinary Surgery, The Affiliated Hospital of Xuzhou Medical University
                [2 ]Jiangsu Key Laboratory of Biological Cancer Therapy, Xuzhou Medical College, Xuzhou, People’s Republic of China
                Author notes
                Correspondence: Li-jun Mao, Department of Urinary Surgery, The Affiliated Hospital of Xuzhou Medical University, 99 West Huai-hai Road, Xuzhou 221000, People’s Republic of China, Email mljmlj05@ 123456xzmc.edu.cn
                Article
                dddt-10-3755
                10.2147/DDDT.S115121
                5117872
                555e13ed-3de1-4972-bdd6-c65ffece362b
                © 2016 Yang et al. This work is published and licensed by Dove Medical Press Limited

                The full terms of this license are available at https://www.dovepress.com/terms.php and incorporate the Creative Commons Attribution – Non Commercial (unported, v3.0) License ( http://creativecommons.org/licenses/by-nc/3.0/). By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed.

                History
                Categories
                Original Research

                Pharmacology & Pharmaceutical medicine
                melanoma,il-18,dacarbazine,oncolytic adenovirus
                Pharmacology & Pharmaceutical medicine
                melanoma, il-18, dacarbazine, oncolytic adenovirus

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