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Rengaraj A, Subbiah B, Haldorai Y, Yesudhas D, Yun HJ, Kwon S, Choi S, Han YK, Kim ES, N. HS, Huh YS. PAMAM/5-fluorouracil drug conjugate for targeting E6 and E7 oncoproteins in cervical cancer: a combined experimental/in silico approach. RSC Adv 2017. [DOI: 10.1039/c6ra26511a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
In the present study, poly(amidoamine)/5-fluorouracil (PAMAM/5-FU) was used as a conjugate system for delivering drugs to target E6 and E7 oncoproteins, which are predominant in cervical cancers.
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Li LL, Wang HR, Zhou ZY, Luo J, Wang XL, Xiao XQ, Zhou YB, Zeng Y. C3-Luc Cells Are an Excellent Model for Evaluation of Cellular Immunity following HPV16L1 Vaccination. PLoS One 2016; 11:e0149748. [PMID: 26900913 PMCID: PMC4763794 DOI: 10.1371/journal.pone.0149748] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Accepted: 02/04/2016] [Indexed: 11/18/2022] Open
Abstract
C3 and TC-1 are the two model cell lines most commonly used in studies of vaccines and drugs against human papillomavirus (HPV) infection. Because C3 cells contain both the HPV16 E and L genes, but TC-1 cells contain only the HPV16 E genes, C3 cells are usually used as the model cell line in studies targeting the HPV16 L protein. However, expression of the L1 protein is difficult to detect in C3 cells using common methods. In our study, Short tandem repeat analysis (STR) was used to demonstrate that C3 cells are indeed derived from mice, PCR results show that HPV16 L1, E6 and E7 genes were detected in C3 genomic DNA, and RT-PCR results demonstrated that L1 transcription had occurred in C3 cells. However, the expression of C3 protein was not found in the results of western blot and immunohistochemistry (IHC). Growth and proliferation of C3 were inhibited by mice spleen lymphocytes that had been immunized with a vaccine against HPV16L1. The luciferase gene was integrated into C3 cells, and it was confirmed that addition of the exogenous gene had no effect on C3 cells by comparing cell growth and tumor formation with untransformed cells. Cells stably expressing luciferase (C3-luc) were screened and subcutaneously injected into the mice. Tumors became established and were observed using a Spectrum Pre-clinical in Vivo Imaging System. Tumor size of mice in the different groups at various time points was calculated by counting photons. The sensitivity of the animals to the vaccine was quantified by statistical comparison. Ten or 30 days following injection of the C3-luc cells, tumor size differed significantly between the PBS and vaccine groups, indicating that C3 cells were susceptible to vaccination even after tumors were formed in vivo.
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Affiliation(s)
- Li-Li Li
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science and Bio-Engineering, Beijing University of Technology, Beijing, China
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, State Key Laboratory for Infectious Disease Prevention and Control, Beijing, China
| | - He-Rong Wang
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science and Bio-Engineering, Beijing University of Technology, Beijing, China
| | - Zhi-Yi Zhou
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science and Bio-Engineering, Beijing University of Technology, Beijing, China
| | - Jing Luo
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science and Bio-Engineering, Beijing University of Technology, Beijing, China
| | - Xiao-Li Wang
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science and Bio-Engineering, Beijing University of Technology, Beijing, China
| | - Xiang-Qian Xiao
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science and Bio-Engineering, Beijing University of Technology, Beijing, China
| | - Yu-Bai Zhou
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science and Bio-Engineering, Beijing University of Technology, Beijing, China
- * E-mail: (ZY); (ZYB)
| | - Yi Zeng
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, State Key Laboratory for Infectious Disease Prevention and Control, Beijing, China
- * E-mail: (ZY); (ZYB)
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Liu J, Li X, Cheng YN, Cui SX, Chen MH, Xu WF, Tian ZG, Makuuchi M, Tang W, Qu XJ. Inhibition of human gastric carcinoma cell growth by treatment of N(3)-o-toluyl-fluorouracil as a precursor of 5-fluorouracil. Eur J Pharmacol 2007; 574:1-7. [PMID: 17904544 DOI: 10.1016/j.ejphar.2007.06.064] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2006] [Revised: 06/07/2007] [Accepted: 06/12/2007] [Indexed: 10/23/2022]
Abstract
N(3)-o-toluyl-fluorouracil (TFU), the pro-drug of 5-fluorouracil (5-FU), is the metabolite of N(1)-acetyl-N(3)-o-toluyl-fluorouracil (atofluding). We aimed to evaluate the efficacy of TFU as a precursor of 5-FU on the growth inhibition of human gastric carcinoma cell lines SGC-7901 and MKN-45. Growth of SGC-7901 and MKN-45 cells was remarkably suppressed by treatment with TFU in the presence of liver microsomal enzymes in vitro, suggesting that TFU may be converted to 5-FU by the enzymes. Similar treatment of TFU induced apoptosis of the cells, which was deduced from typical apoptotic features such as morphology, the formation of characteristic ladder pattern of DNA migration and the accumulation of sub-G1 phase. Cancer cells xenografts in nude mice were employed to evaluate the efficacy of TFU in vivo. Growth of human gastric carcinoma cells was significantly delayed by oral administration of TFU with low side effects. Apoptosis in xenografts was also observed by means of TUNEL staining method. These results suggest that the treatment of TFU in the presence of liver microsomal enzymes and the oral administration of TFU in mice induced anti-proliferation and apoptosis in gastric carcinoma cells. This suggests that TFU may be a promising pro-drug of 5-FU for cancer treatments.
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Affiliation(s)
- Jian Liu
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
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