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Liu L, Li T, Cheng XJ, Peng CT, Li CC, He LH, Ju SM, Wang NY, Ye TH, Lian M, Xiao QJ, Song YJ, Zhu YB, Yu LT, Wang ZL, Bao R. Author Correction: Structural and functional studies on Pseudomonas aeruginosa DspI: implications for its role in DSF biosynthesis. Sci Rep 2018; 8:12632. [PMID: 30116011 PMCID: PMC6095887 DOI: 10.1038/s41598-018-30920-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Affiliation(s)
- Li Liu
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China.,Department of Dermatology, Southwest Medical University, affiliated hospital, Luzhou, China
| | - Tao Li
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Xing-Jun Cheng
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Cui-Ting Peng
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Chang-Cheng Li
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Li-Hui He
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Si-Min Ju
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Ning-Yu Wang
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, China
| | - Ting-Hong Ye
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Mao Lian
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Qing-Jie Xiao
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Ying-Jie Song
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Yi-Bo Zhu
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Luo-Ting Yu
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China.
| | - Zhen-Ling Wang
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China.
| | - Rui Bao
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China.
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Liu L, Li T, Cheng XJ, Peng CT, Li CC, He LH, Ju SM, Wang NY, Ye TH, Lian M, Xiao QJ, Song YJ, Zhu YB, Yu LT, Wang ZL, Bao R. Structural and functional studies on Pseudomonas aeruginosa DspI: implications for its role in DSF biosynthesis. Sci Rep 2018; 8:3928. [PMID: 29500457 PMCID: PMC5834635 DOI: 10.1038/s41598-018-22300-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 02/15/2018] [Indexed: 02/05/2023] Open
Abstract
DspI, a putative enoyl-coenzyme A (CoA) hydratase/isomerase, was proposed to be involved in the synthesis of cis-2-decenoic acid (CDA), a quorum sensing (QS) signal molecule in the pathogen Pseudomonas aeruginosa (P. aeruginosa). The present study provided a structural basis for the dehydration reaction mechanism of DspI during CDA synthesis. Structural analysis reveals that Glu126, Glu146, Cys127, Cys131 and Cys154 are important for its enzymatic function. Moreover, we show that the deletion of dspI results in a remarkable decreased in the pyoverdine production, flagella-dependent swarming motility, and biofilm dispersion as well as attenuated virulence in P. aeruginosa PA14. This study thus unravels the mechanism of DspI in diffusible signal factor (DSF) CDA biosynthesis, providing vital information for developing inhibitors that interfere with DSF associated pathogenicity in P. aeruginosa.
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Affiliation(s)
- Li Liu
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
- Department of Dermatology, Southwest Medical University, affiliated hospital, Luzhou, China
| | - Tao Li
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Xing-Jun Cheng
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Cui-Ting Peng
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Chang-Cheng Li
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Li-Hui He
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Si-Min Ju
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Ning-Yu Wang
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, China
| | - Ting-Hong Ye
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Mao Lian
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Qing-Jie Xiao
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Ying-Jie Song
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Yi-Bo Zhu
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Luo-Ting Yu
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China.
| | - Zhen-Ling Wang
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China.
| | - Rui Bao
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China.
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Deng YL, Li YL, Zheng TT, Hu MX, Ye TH, Xie YM, Yin WY. [The Extract from Punica Granatum (Pomegranate) Leaves Promotes Apoptosis and Impairs Metastasis in Prostate Cancer Cells]. Sichuan Da Xue Xue Bao Yi Xue Ban 2018; 49:8-12. [PMID: 29737081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To investigate the effects of pomegranate leaves extract(PLE)on proliferation,apoptosis and metastasis of prostate cancer cells. METHODS The proliferation of TRAMP-C1,DU145,PC3 prostate cancer cells treated with different concentrations of PLE (final mass concentrations were 12.5,25,50,100, 200 μg/mL,respectively) for different time (24,48,72 h) was detected by MTT assay. Colony formation assay was performed to verify the long-term effects of PLE on the proliferation of DU145 and PC3 cells.After being treated with PLE for 48 h,Hoechst-33258 staining was used to observe the changes in the nucleus,the cell apoptotic rate was detected by flow cytometry,and wound-healing migration assay was perform to test the change of migration. RESULTS In comparison with the control group,PLE in the range of 12.5-200 μg/mL had a certain inhibitory effect on the proliferation of TRAMP-C1,DU145 and PC3 cells ( P<0.05).In the range of 6.25-100 μg/mL,the number of colony formation of DU145 and PC3 was significantly reduced( P<0.01).After PLE treated for 48 h, the apoptotic features of nuclear fragmentation and the formation apoptotic body was observed in PC3. With the increase of concentration,the apoptotic rate increased gradually ( P<0.05),and the ability of cells to migrate to the scratch area was significantly weaker than the control group ( P<0.01). CONCLUSION PLE has effect on proliferation,apoptosis and metastasis of prostate cancer cells.
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Affiliation(s)
- Yuan-le Deng
- Department of Nutrition and Food Hygiene,West China School of Public Health,Sichuan University,Chengdu 610041,China
| | - Ya-Li Li
- Department of Nutrition and Food Hygiene,West China School of Public Health,Sichuan University,Chengdu 610041,China
| | - Ting-Ting Zheng
- Department of Nutrition and Food Hygiene,West China School of Public Health,Sichuan University,Chengdu 610041,China
| | - Ming-Xing Hu
- State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy,West China Hospital, Sichuan University,Chengdu 610041,China
| | - Ting-Hong Ye
- State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy,West China Hospital, Sichuan University,Chengdu 610041,China
| | - Yong-Mei Xie
- State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy,West China Hospital, Sichuan University,Chengdu 610041,China
| | - Wen-Ya Yin
- Department of Nutrition and Food Hygiene,West China School of Public Health,Sichuan University,Chengdu 610041,China
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Zeng AQ, Yu Y, Yao YQ, Yang FF, Liao M, Song LJ, Li YL, Yu Y, Li YJ, Deng YL, Yang SP, Zeng CJ, Liu P, Xie YM, Yang JL, Zhang YW, Ye TH, Wei YQ. Betulinic acid impairs metastasis and reduces immunosuppressive cells in breast cancer models. Oncotarget 2017; 9:3794-3804. [PMID: 29423083 PMCID: PMC5790500 DOI: 10.18632/oncotarget.23376] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 11/27/2017] [Indexed: 02/05/2023] Open
Abstract
Breast cancer is the most common female cancer with considerable metastatic potential, explaining the need for new candidates that inhibit tumor metastasis. In our study, betulinic acid (BA), a kind of pentacyclic triterpenoid compound derived from birch trees, was evaluated for its anti-metastasis activity in vitro and in vivo. BA decreased the viability of three breast cancer cell lines and markedly impaired cell migration and invasion. In addition, BA could inhibit the activation of stat3 and FAK which resulted in a reduction of matrix metalloproteinases (MMPs), and increase of the MMPs inhibitor (TIMP-2) expression. Moreover, in our animal experiment, intraperitoneal administration of 10 mg/kg/day BA suppressed 4T1 tumor growth and blocked formation of pulmonary metastases without obvious side effects. Furthermore, histological and immunohistochemical analyses showed a decrease in MMP-9 positive cells, MMP-2 positive cells and Ki-67 positive cells and an increase in cleaved caspase-3 positive cells upon BA administration. Notably, BA reduced the number of myeloid-derived suppressor cells (MDSCs) in the lungs and tumors. Interestingly, in our caudal vein model, BA also obviously suppressed 4T1 tumor pulmonary metastases. These findings suggested that BA might be a potential agent for inhibiting the growth and metastasis of breast cancer.
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Affiliation(s)
- An-Qi Zeng
- Laboratory of Liver Surgery, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Yan Yu
- Laboratory of Liver Surgery, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Yu-Qin Yao
- Laboratory of Liver Surgery, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Fang-Fang Yang
- Laboratory of Liver Surgery, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Mengya Liao
- Sichuan Nursing Vocational College, Chengdu 610100, China
| | - Lin-Jiang Song
- Laboratory of Liver Surgery, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Ya-Li Li
- Laboratory of Liver Surgery, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Yang Yu
- Department of Peritoneal Cancer Surgery, Beijing Shijitan Hospital Affiliated to the Capital Medical University, Beijing 100038, China
| | - Yu-Jue Li
- Laboratory of Liver Surgery, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Yuan-Le Deng
- Laboratory of Liver Surgery, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Shu-Ping Yang
- Laboratory of Liver Surgery, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Chen-Juan Zeng
- Laboratory of Liver Surgery, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China.,Sichuan Scientist Biotechnology Co., Ltd, Chengdu 610041, China
| | - Ping Liu
- Department of Gynecology and Obstetrics, Key Laboratory of Birth Defects and Related Diseases of Women and Children of the Ministry of Education, West China Second Hospital, Sichuan University, Chengdu 610041, China
| | - Yong-Mei Xie
- Laboratory of Liver Surgery, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Jin-Liang Yang
- Laboratory of Liver Surgery, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Yi-Wen Zhang
- Laboratory of Liver Surgery, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Ting-Hong Ye
- Laboratory of Liver Surgery, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Yu-Quan Wei
- Laboratory of Liver Surgery, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
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Gao C, Ye TH, Peng CT, Shi YJ, You XY, Xiong L, Ran K, Zhang LD, Zeng XX, Wang NY, Yu LT, Wei YQ. A novel benzothiazinethione analogue SKLB-TB1001 displays potent antimycobacterial activities in a series of murine models. Biomed Pharmacother 2017; 88:603-609. [PMID: 28142116 DOI: 10.1016/j.biopha.2017.01.098] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 01/16/2017] [Accepted: 01/16/2017] [Indexed: 02/05/2023] Open
Abstract
New chemotherapeutic compounds and regimens are needed to combat multidrug-resistant Mycobacterium tuberculosis. Here, we used a series of murine models to assess an antitubercular lead compound SKLB-TB1001. In the Mycobacterium bovis bacillus Calmette-Guérin and the acute M. tuberculosis H37Rv infection mouse models, SKLB-TB1001 significantly attenuated the mycobacterial load in lungs and spleens. The colony forming unit counts and histological examination of lungs from H37Rv infected mice revealed that the benzothiazinethione analogue SKLB-TB1001 as a higher dose level was as effective as isoniazid. Moreover, in a multidrug-resistant (MDR)-TB mouse model, SKLB-TB1001 showed significant activity in a dose-dependent manner and was more effective than streptomycin. These results suggested that SKLB-TB1001 could be an antitubercular drug candidate worth further investigation.
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Affiliation(s)
- Chao Gao
- Department of Liver Surgery, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University/Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, PR China
| | - Ting-Hong Ye
- Department of Liver Surgery, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University/Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, PR China.
| | - Cui-Ting Peng
- Department of Liver Surgery, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University/Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, PR China; Department of Pharmaceutical and Bioengineering, School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, PR China
| | - Yao-Jie Shi
- Department of Liver Surgery, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University/Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, PR China
| | - Xin-Yu You
- Department of Liver Surgery, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University/Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, PR China; Department of Pharmaceutical and Bioengineering, School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, PR China
| | - Lu Xiong
- Department of Liver Surgery, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University/Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, PR China
| | - Kai Ran
- Department of Liver Surgery, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University/Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, PR China
| | - Li-Dan Zhang
- Department of Liver Surgery, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University/Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, PR China; Department of Pharmaceutical and Bioengineering, School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, PR China
| | - Xiu-Xiu Zeng
- Department of Pharmaceutical and Bioengineering, School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, PR China
| | - Ning-Yu Wang
- Department of Liver Surgery, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University/Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, PR China
| | - Luo-Ting Yu
- Department of Liver Surgery, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University/Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, PR China.
| | - Yu-Quan Wei
- Department of Liver Surgery, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University/Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, PR China
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Ye TH, Yang FF, Zhu YX, Li YL, Lei Q, Song XJ, Xia Y, Xiong Y, Zhang LD, Wang NY, Zhao LF, Gou HF, Xie YM, Yang SY, Yu LT, Yang L, Wei YQ. Inhibition of Stat3 signaling pathway by nifuroxazide improves antitumor immunity and impairs colorectal carcinoma metastasis. Cell Death Dis 2017; 8:e2534. [PMID: 28055016 PMCID: PMC5386364 DOI: 10.1038/cddis.2016.452] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 11/30/2016] [Accepted: 12/01/2016] [Indexed: 02/05/2023]
Abstract
Colorectal carcinoma (CRC) is the one of the most common cancers with considerable metastatic potential, explaining the need for new drug candidates that inhibit tumor metastasis. The signal transducers and activators of the transcription 3 (Stat3) signaling pathway has an important role in CRC and has been validated as a promising anticancer target for CRC therapy. In the present study, we report our findings on nifuroxazide, an antidiarrheal agent identified as an inhibitor of Stat3. Our studies showed that nifuroxazide decreased the viability of three CRC cell lines and induced apoptosis of cancer cells in a concentration-dependent manner. Moreover, western blot analysis demonstrated that the occurrence of its apoptosis was correlated with the activation of Bax and cleaved caspase-3, and decreased the expression of Bcl-2. In addition, nifuroxazide markedly impaired CRC cell migration and invasion by downregulating phosphorylated-Stat3Tyr705, and also impaired the expression of matrix metalloproteinases (MMP-2 and MMP-9). Furthermore, our studies showed that nifuroxazide also significantly inhibited the tumor metastasis in lung and abdomen metastasis models of colon cancer. Meanwhile, nifuroxazide functionally reduced the proliferation index, induced tumor apoptosis and impaired metastasis. Notably, nifuroxazide reduced the number of myeloid-derived suppressor cells in the blood, spleens and tumors, accompanied by the increased infiltration of CD8+ T cells in the tumors. Importantly, a marked decrease in the number of M2-type macrophages in tumor in the abdomen metastasis model was also observed. Taken together, our results indicated that nifuroxazide could effectively inhibit tumor metastasis by mediating Stat3 pathway and it might have a therapeutic potential for the treatment of CRC.
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Affiliation(s)
- Ting-Hong Ye
- Department of Liver Surgery and Division of Digestive Diseases, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Fang-Fang Yang
- Department of Liver Surgery and Division of Digestive Diseases, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Yong-Xia Zhu
- Department of Liver Surgery and Division of Digestive Diseases, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Ya-Li Li
- Department of Liver Surgery and Division of Digestive Diseases, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Qian Lei
- Department of Liver Surgery and Division of Digestive Diseases, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Xue-Jiao Song
- Department of Liver Surgery and Division of Digestive Diseases, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Yong Xia
- Department of Liver Surgery and Division of Digestive Diseases, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Ying Xiong
- Department of Liver Surgery and Division of Digestive Diseases, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China.,Department of Pharmacy, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Li-Dan Zhang
- Department of Liver Surgery and Division of Digestive Diseases, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Ning-Yu Wang
- Department of Liver Surgery and Division of Digestive Diseases, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Li-Feng Zhao
- Department of Liver Surgery and Division of Digestive Diseases, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Hong-Feng Gou
- Department of Abdominal Cancer, Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Yong-Mei Xie
- Department of Liver Surgery and Division of Digestive Diseases, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Sheng-Yong Yang
- Department of Liver Surgery and Division of Digestive Diseases, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Luo-Ting Yu
- Department of Liver Surgery and Division of Digestive Diseases, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Li Yang
- Department of Liver Surgery and Division of Digestive Diseases, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Yu-Quan Wei
- Department of Liver Surgery and Division of Digestive Diseases, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
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Zhang T, Liao M, Tian Y, Wang F, Ye T, Zhang Y, Zhang X, Chen Y. HPLC Determination of Enantiomeric Purity of Letermovir Based on CHIRALPAK AD. J Chromatogr Sci 2016; 54:1495-1500. [DOI: 10.1093/chromsci/bmw042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 01/13/2016] [Indexed: 11/14/2022]
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Luo M, Shao B, Nie W, Wei XW, Li YL, Wang BL, He ZY, Liang X, Ye TH, Wei YQ. Antitumor and Adjuvant Activity of λ-carrageenan by Stimulating Immune Response in Cancer Immunotherapy. Sci Rep 2015; 5:11062. [PMID: 26098663 PMCID: PMC4476469 DOI: 10.1038/srep11062] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Accepted: 05/15/2015] [Indexed: 02/05/2023] Open
Abstract
λ-Carrageenan is a seaweed polysaccharide which has been generally used as proinflammatory agent in the basic research, however, how the immunomodulating activity of λ-carrageenan affects tumor microenvironment remains unknown. In this study, we found that intratumoral injection of λ-carrageenan could inhibit tumor growth in B16-F10 and 4T1 bearing mice and enhance tumor immune response by increasing the number of tumor-infiltrating M1 macrophages, DCs and more activated CD4(+)CD8(+) T lymphocytes in spleen. In addition, λ-carrageenan could enhance the secretion of IL17A in spleen and significantly increase the level of TNF-α in tumor, most of which was secreted by infiltrating macrophages. Moreover, λ-carrageenan exhibited an efficient adjuvant effect in OVA-based preventative and therapeutic vaccine for cancer treatment, which significantly enhanced the production of anti-OVA antibody. The toxicity analysis suggested that λ-carrageenan was with a good safety profile. Thus, λ-carrageenan might be used both as a potent antitumor agent and an efficient adjuvant in cancer immunotherapy.
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Affiliation(s)
- Min Luo
- State Key Laboratory of Biotherapy and Laboratory for Aging Research, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, PR China
| | - Bin Shao
- State Key Laboratory of Biotherapy and Laboratory for Aging Research, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, PR China
| | - Wen Nie
- Department of medical oncology, Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, PR China
| | - Xia-Wei Wei
- State Key Laboratory of Biotherapy and Laboratory for Aging Research, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, PR China
| | - Yu-Li Li
- State Key Laboratory of Biotherapy and Laboratory for Aging Research, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, PR China
| | - Bi-Lan Wang
- State Key Laboratory of Biotherapy and Laboratory for Aging Research, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, PR China
| | - Zhi-Yao He
- State Key Laboratory of Biotherapy and Laboratory for Aging Research, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, PR China
| | - Xiao Liang
- State Key Laboratory of Biotherapy and Laboratory for Aging Research, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, PR China
| | - Ting-Hong Ye
- State Key Laboratory of Biotherapy and Laboratory for Aging Research, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, PR China
| | - Yu-Quan Wei
- State Key Laboratory of Biotherapy and Laboratory for Aging Research, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, PR China
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Xu Y, Wang NY, Song XJ, Lei Q, Ye TH, You XY, Zuo WQ, Xia Y, Zhang LD, Yu LT. Discovery of novel N-(5-(tert-butyl)isoxazol-3-yl)-N'-phenylurea analogs as potent FLT3 inhibitors and evaluation of their activity against acute myeloid leukemia in vitro and in vivo. Bioorg Med Chem 2015; 23:4333-4343. [PMID: 26142317 DOI: 10.1016/j.bmc.2015.06.033] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2015] [Revised: 06/10/2015] [Accepted: 06/11/2015] [Indexed: 02/05/2023]
Abstract
FLT3 inhibitors have been explored as a viable therapy for acute myeloid leukemia (AML). However, the clinical outcomes of these FLT3 inhibitors were underwhelming except AC220. Therefore, the development of novel FLT3 inhibitors with high potency against both FLT3-WT and FLT3-ITD mutants are strongly demanded at the present time. In this study, we designed and synthesized a series of novel N-(5-(tert-butyl)isoxazol-3-yl)-N'-phenylurea derivatives as FLT3 inhibitors. SAR studies focused on the fused rings led to the discovery of a series of compounds with high potency against FLT3-ITD-bearing MV4-11 cells and significantly inhibitory activity toward FLT3. Among these compounds, N-(5-(tert-butyl)isoxazol-3-yl)-N'-(4-(7-methoxyimidazo[1,2-a]pyridin-2-yl)phenyl)urea (16i), displayed acceptable aqueous solubility, desirable pharmacokinetic profile and high cytotoxicity selectivity against MV4-11 cells. This compound can inhibit phosphorylation of FLT3 and induce apoptosis in a concentration-dependent manner. Further in vivo antitumor studies showed that 16i led to complete tumor regression in the MV4-11 xenograft model at a dose of 60 mg/kg/d while without observable body weight loss. This study had provided us a new chemotype of FLT3 inhibitors as novel therapic candidates for AML.
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Affiliation(s)
- Ying Xu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Ning-Yu Wang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Xue-Jiao Song
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Qian Lei
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Ting-Hong Ye
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Xin-Yu You
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China; College of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Wei-Qiong Zuo
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Yong Xia
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China
| | - Li-Dan Zhang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China; College of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Luo-Ting Yu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu 610041, China.
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Wang NY, Xu Y, Zuo WQ, Xiao KJ, Liu L, Zeng XX, You XY, Zhang LD, Gao C, Liu ZH, Ye TH, Xia Y, Xiong Y, Song XJ, Lei Q, Peng CT, Tang H, Yang SY, Wei YQ, Yu LT. Discovery of imidazo[2,1-b]thiazole HCV NS4B inhibitors exhibiting synergistic effect with other direct-acting antiviral agents. J Med Chem 2015; 58:2764-78. [PMID: 25710739 DOI: 10.1021/jm501934n] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The design, synthesis, and SAR studies of novel inhibitors of HCV NS4B based on the imidazo[2,1-b]thiazole scaffold were described. Optimization of potency with respect to genotype 1b resulted in the discovery of two potent leads 26f (EC50 = 16 nM) and 28g (EC50 = 31 nM). The resistance profile studies revealed that 26f and 28g targeted HCV NS4B, more precisely the second amphipathic α helix of NS4B (4BAH2). Cross-resistance between our 4BAH2 inhibitors and other direct-acting antiviral agents targeting NS3/4A, NS5A, and NS5B was not observed. For the first time, the synergism of a series of combinations based on 4BAH2 inhibitors was evaluated. The results demonstrated that our 4BAH2 inhibitor 26f was synergistic with NS3/4A inhibitor simeprevir, NS5A inhibitor daclatasvir, and NS5B inhibitor sofosbuvir, and it could also reduce the dose of these drugs at almost all effect levels. Our study suggested that favorable effects could be achieved by combining 4BAH2 inhibitors such as 26f with these approved drugs and that new all-oral antiviral combinations based on 4BAH2 inhibitors were worth developing to supplement or even replace current treatment regimens for curing HCV infection.
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Affiliation(s)
- Ning-Yu Wang
- §State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, China
| | - Ying Xu
- §State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, China
| | - Wei-Qiong Zuo
- §State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, China
| | - Kun-Jie Xiao
- §State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, China
| | - Li Liu
- §State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, China.,‡Department of Pharmaceutical and Bioengineering, School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Xiu-Xiu Zeng
- §State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, China.,‡Department of Pharmaceutical and Bioengineering, School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Xin-Yu You
- §State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, China.,‡Department of Pharmaceutical and Bioengineering, School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Li-Dan Zhang
- §State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, China.,‡Department of Pharmaceutical and Bioengineering, School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Chao Gao
- §State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, China
| | - Zhi-Hao Liu
- §State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, China
| | - Ting-Hong Ye
- §State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, China
| | - Yong Xia
- §State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, China
| | - Ying Xiong
- §State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, China
| | - Xue-Jiao Song
- §State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, China
| | - Qian Lei
- §State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, China
| | - Cui-Ting Peng
- §State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, China.,‡Department of Pharmaceutical and Bioengineering, School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Hong Tang
- §State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, China
| | - Sheng-Yong Yang
- §State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, China
| | - Yu-Quan Wei
- §State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, China
| | - Luo-Ting Yu
- §State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, China
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Yang F, Yu Y, Lei Q, Zeng A, Li Y, Xie Y, Ye T, Wei Y. Lobaplatin arrests cell cycle progression, induces apoptosis and impairs migration and invasion in B16-F10 melanoma cell line in vitro. Biomed Pharmacother 2014; 69:402-8. [PMID: 25661389 DOI: 10.1016/j.biopha.2014.12.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Accepted: 12/10/2014] [Indexed: 02/05/2023] Open
Abstract
Melanoma is highly resistant to most conventional treatment, and the incidence and mortality rates are increasing rapidly worldwide. The objective of this study was to determine the anticancer effects of lobaplatin on the melanoma carcinoma cell line B16-F10 in vitro, and explored its mechanisms of action. Our results have shown that lobaplatin inhibited cell proliferation in human melanoma A375 and CHL-1 cells and murine melanoma B16-F10 cells in a concentration- and time-dependent manner. Flow cytometry assay confirmed that lobaplatin affected B16-F10 cell survival by blocking cell cycle progression in G2/M phase and inducing apoptosis in a concentration-dependent manner. In addition, the apoptosis was associated with downregulation of anti-apoptotic protein Bcl-2 while upregulation of pro-apoptotic protein Bax. Lobaplatin could also decrease the mitochondrial membrane potential, indicating that lobaplatin may induce apoptosis via mitochondria-mediated apoptotic pathway. Furthermore, lobaplatin blocked B16-F10 cell migration and invasion in vitro. These results suggested that lobaplatin could be an effective chemotherapeutic agent in melanoma treatment by inhibiting proliferation, inducing apoptosis, cell cycle arrest and blocking cell migration and invasion.
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Affiliation(s)
- Fangfang Yang
- State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Yang Yu
- Department of Oncology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Qian Lei
- State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Anqi Zeng
- State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Yali Li
- State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Yongmei Xie
- State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China.
| | - TingHong Ye
- State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China.
| | - Yuquan Wei
- State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
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12
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Deng R, Wang SM, Yin T, Ye TH, Shen GB, Li L, Zhao JY, Sang YX, Duan XG, Wei YQ. Dimethyl Sulfoxide Suppresses Mouse 4T1 Breast Cancer Growth by Modulating Tumor-Associated Macrophage Differentiation. J Breast Cancer 2014; 17:25-32. [PMID: 24744794 PMCID: PMC3988339 DOI: 10.4048/jbc.2014.17.1.25] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Accepted: 03/07/2014] [Indexed: 02/06/2023] Open
Abstract
Purpose The universal organic solvent dimethyl sulfoxide (DMSO) can be used as a differentiation inducer of many cancer cells and has been widely used as a solvent in laboratories. However, its effects on breast cancer cells are not well understood. The aim of this study is to investigate the effect and associated mechanisms of DMSO on mouse breast cancer. Methods We applied DMSO to observe the effect on tumors in a mouse breast cancer model. Tumor-associated macrophages (TAMs) were tested by flow cytometry. Ex vivo tumor microenvironment was imitated by 4T1 cultured cell conditioned medium. Enzyme-linked immunosorbent assays were performed to detect interleukin (IL)-10 and IL-12 expression in medium. To investigate the cytotoxicity of DMSO on TAMs, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assays were performed. Results We found that DMSO produced tumor retardation when injected into mouse peritoneal cavities in a certain concentration range (0.5-1.0 mg/g). Furthermore, as detected by flow cytometry, TAM subtypes were found to be transformed. We further imitated a tumor microenvironment in vitro by using 4T1 cultured cell conditioned medium. Similarly, by using low concentration DMSO (1.0%-2.0% v/v), TAMs were induced to polarize to the classically activated macrophage (M1-type) and inhibited from polarizing into the alternatively activated macrophage (M2-type) in the conditioned medium. IL-10 expression in tumors was reduced, while IL-12 was increased compared with the control. Furthermore, we reported that 2.0% (v/v) DMSO could lead to cytotoxicity in peritoneal macrophages after 48 hours in MTT assays. Conclusion Our findings suggest that DMSO could exert antitumor effects in 4T1 cancer-bearing mice by reversing TAM orientation and polarization from M2- to M1-type TAMs. These data may provide novel insight into studying breast cancer immunotherapy.
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Affiliation(s)
- Rui Deng
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Shi-Min Wang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Tao Yin
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Ting-Hong Ye
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Guo-Bo Shen
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Ling Li
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Jing-Yi Zhao
- Department of Medical Oncology, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Ya-Xiong Sang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Xiao-Gang Duan
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Yu-Quan Wei
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
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13
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He ZY, Wei XW, Luo M, Luo ST, Yang Y, Yu YY, Chen Y, Ma CC, Liang X, Guo FC, Ye TH, Shi HS, Shen GB, Wang W, Gong FM, He G, Yang L, Zhao X, Song XR, Wei YQ. Folate-linked lipoplexes for short hairpin RNA targeting claudin-3 delivery in ovarian cancer xenografts. J Control Release 2013; 172:679-89. [DOI: 10.1016/j.jconrel.2013.10.015] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 09/23/2013] [Accepted: 10/11/2013] [Indexed: 10/26/2022]
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Shi YJ, Song XJ, Li X, Ye TH, Xiong Y, Yu LT. Synthesis and biological evaluation of 1,2,4-triazole and 1,3,4-thiadiazole derivatives as potential cytotoxic agents. Chem Pharm Bull (Tokyo) 2013; 61:1099-104. [PMID: 23934258 DOI: 10.1248/cpb.c13-00242] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A series of new 3-amino-5-sulfanyl-1,2,4-triazole and 2-amino-5-sulfanyl-1,3,4-thiadiazole derivatives have been synthesized and their cytotoxicities were evaluated on a panel of human cancer cell lines (BxPC-3, H1975, SKOV-3, A875, HCT116, etc.). The best one (compound 5m) exhibited activities with IC50 values ranging from 0.04 to 23.6 µM against nine human cancer cell lines. Further biological evaluation indicated that DNA replication was blocked by treatment with compound 5m in HCT116 cells.
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Affiliation(s)
- Yao-Jie Shi
- State Key Laboratory of Biotherapy, West China Hospital, West China Medical School, Sichuan University
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15
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Deng R, Wang SM, Yin T, Ye TH, Shen GB, Li L, Zhao JY, Sang YX, Duan XG, Wei YQ. Inhibition of Tumor Growth and Alteration of Associated Macrophage Cell Type by an HO-1 Inhibitor in Breast Carcinoma-Bearing Mice. Oncol Res 2012; 20:473-82. [PMID: 24308158 DOI: 10.3727/096504013x13715991125684] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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16
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Ye TH, Huang TT, Shi YJ, Xiong Y, Yu LT. N-Methyl-4-(4-pivalamidophenylsulfanyl)picolinamide hemihydrate. Acta Crystallogr Sect E Struct Rep Online 2011; 67:o1098. [PMID: 21754418 PMCID: PMC3089303 DOI: 10.1107/s1600536811012268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2011] [Accepted: 04/02/2011] [Indexed: 11/11/2022]
Abstract
In the title compound, C18H21N3O2S·0.5H2O, the benzene ring makes dihedral angles of 88.59 (6) and 40.74 (8)° with the pyridine ring and the amide group, respectively. The water O atom lies on a twofold axis. In the crystal, the organic molecules and the water molecules are linked via O—H⋯O hydrogen bonds, while the organic molecules are connected to each other via N—H⋯O hydrogen bonds, forming a three-dimensional network.
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17
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Zeng XX, Ye TH, Lun DW, Yu LT, Yang L. 3-Amino-4,6-dimethylthieno[2,3- b]pyridine-2-carbonitrile. Acta Crystallogr Sect E Struct Rep Online 2009; 65:o3138. [PMID: 21578859 PMCID: PMC2971991 DOI: 10.1107/s1600536809048132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2009] [Accepted: 11/13/2009] [Indexed: 11/20/2022]
Abstract
The molecule of the title compound, C10H9N3S, is almost planar, with a dihedral angle of 1.38 (4)° between the thiophene and pyridine rings. In the crystal packing, molecules are linked into layers parallel to the ab plane by intermolecular N—H⋯N hydrogen bonds and by π⋯π stacking interactions involving adjacent pyridine and thiophene rings with a centroid–centroid distance of 3.537 (3) Å.
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18
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Gong ZY, Ye TH, Qin XT, Yu GX, Guo XY, Luo AL. [Patient-controlled analgesia with lornoxicam in patients undergoing gynecological surgery]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 2001; 23:472-5. [PMID: 12905865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Abstract
OBJECTIVE To assess the analgesic effect and side effects of PCA with lornoxicam compared with morphine and tramadol. METHODS 89 patients, scheduled for elective hysterectomy or hysteromyomectomy, were randomly divided into Group L, Group M and Group T. Three drugs administered i.v. via a patient-controlled analgesia for up to 24 h postoperatively. RESULTS Efficacy was assessed by comparing total pain relief (TOTPAR) and sum of pain intensity difference (SPID) over 24 h. Statistically significant equivalence of lornoxicam, morphine and tramadol was shown by TOTPAR values 15.2 +/- 3.9, 16.4 +/- 3.5 and 15.9 +/- 4.4, by SPID values 10.3 +/- 3.1, 9.0 +/- 2.0 and 9.2 +/- 4.7, respectively (P > 0.05). Lornoxicam caused fewer adverse events than morphine and tramadol (10.0%, 26.7% and 17.2% of patients, respectively). CONCLUSION The study suggests that lornoxicam provides an alternative to morphine or tramadaol for the treatment of postoperative pain.
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Affiliation(s)
- Z Y Gong
- Department of Anesthesiology, PUMC Hospital, CAMS, PUMC, Beijing 100730, China.
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19
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Guo XY, Ye TH, Luo AL. [Ondansetron on postoperative nausea and vomiting]. Zhonghua Wai Ke Za Zhi 1994; 32:435-7. [PMID: 7842986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The efficacy and safety of prophylactic intravenous ondansetron on prevention of postoperative nausea and vomiting were investigated in 65 ASA grades I-III patients undergoing elective abdominal surgery and receiving general anesthesia. Patients received ondansetron 4mg i.v. prior to a standardized technique for induction and intubation. Anesthesia was maintained with N2O-O2 and enflurane. The results showed that, by ondansetron 4mg, nausea and emesis could be significantly decreased. The effect lasted around 24h postoperatively without sedation. No one developed vomiting and only 9 patients developed nausea. No changes on laboratory parameters as well as vital signs were observed. No side-effects related to ondansetron were found. In prophylaxis of postoperative nausea and vomiting, ondansetron is effective and safe.
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Affiliation(s)
- X Y Guo
- Peking Union Medical College Hospital, Beijing
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Abstract
We measured arterial and venous occlusion pressure profiles in left lower lobes of dog lungs perfused in constant flow and pulsatile flow. Initially, pulmonary arterial pressure, flow rate, and venous pressure were recorded during a series of inflow and outflow occlusions effected during constant flow perfusion. The perfusion was then made pulsatile and while keeping the same flow rate, a second series of vascular occlusions was performed. The arterial occlusion pressures measured with the two modes of perfusion were similar. During pulsatile perfusion, the variation in arterial pressure following an arterial occlusion varied with the timing of occlusion in the pressure cycle. The arterial pressure drop could be recovered by selecting the time-averaged pulmonary arterial pressure as the upstream pressure. During both types of perfusion, the venous occlusion curves were similar. The arterial and venous pressure drops were approximately 4.8 mm Hg and 4.2 mm Hg, respectively. We concluded that the longitudinal distribution of pulmonary vascular pressures can be inferred from occlusion measurements obtained in pulsatile flow.
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Affiliation(s)
- J M Maarek
- Department of Biomedical Engineering, University of Southern California, Los Angeles 90089-1451
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21
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Chartrand DA, Maarek JM, Ye TH, Chang HK. Lung and chest wall mechanics in rabbits during high-frequency body-surface oscillation. J Appl Physiol (1985) 1990; 68:1722-6. [PMID: 2347810 DOI: 10.1152/jappl.1990.68.4.1722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
In eight anesthetized and tracheotomized rabbits, we studied the transfer impedances of the respiratory system during normocapnic ventilation by high-frequency body-surface oscillation from 3 to 15 Hz. The total respiratory impedance was partitioned into pulmonary and chest wall impedances to characterize the oscillatory mechanical properties of each component. The pulmonary and chest wall resistances were not frequency dependent in the 3- to 15-Hz range. The mean pulmonary resistance was 13.8 +/- 3.2 (SD) cmH2O.l-1.s, although the mean chest wall resistance was 8.6 +/- 2.0 cmH2O.l-1.s. The pulmonary elastance and inertance were 0.247 +/- 0.095 cmH2O/ml and 0.103 +/- 0.033 cmH2O.l-1.s2, respectively. The chest wall elastance and inertance were 0.533 +/- 0.136 cmH2O/ml and 0.041 +/- 0.063 cmH2O.l-1.s2, respectively. With a linear mechanical behavior, the transpulmonary pressure oscillations required to ventilate these tracheotomized animals were at their minimal value at 3 Hz. As the ventilatory frequency was increased beyond 6-9 Hz, both the minute ventilation necessary to maintain normocapnia and the pulmonary impedance increased. These data suggest that ventilation by body-surface oscillation is better suited for relatively moderate frequencies in rabbits with normal lungs.
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Affiliation(s)
- D A Chartrand
- Department of Biomedical Engineering, University of Southern California, Los Angeles 90089-1451
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Abstract
The major goal of this study was to compare gas exchange, tidal volume (VT), and dynamic lung pressures resulting from high-frequency airway oscillation (HFAO) with the corresponding effects in high-frequency chest wall oscillation (HFCWO). Eight anesthetized paralyzed dogs were maintained eucapnic with HFAO and HFCWO at frequencies ranging from 1 to 16 Hz in the former and 0.5 to 8 Hz in the latter. Tracheal (delta Ptr) and esophageal (delta Pes) pressure swings, VT, and arterial blood gases were measured in addition to respiratory impedance and static pressure-volume curves. Mean positive pressure (25-30 cmH2O) in the chest cuff associated with HFCWO generation decreased lung volume by approximately 200 ml and increased pulmonary impedance significantly. Aside from this decrease in functional residual capacity (FRC), no change in lung volume occurred as a result of dynamic factors during the course of HFCWO application. With HFAO, a small degree of hyperinflation occurred only at 16 Hz. Arterial PO2 decreased by 5 Torr on average during HFCWO. VT decreased with increasing frequency in both cases, but VT during HFCWO was smaller over the range of frequencies compared with HFAO. delta Pes and delta Ptr between 1 and 8 Hz were lower than the corresponding pressure swings obtained with conventional mechanical ventilation (CMV) applied at 0.25 Hz. delta Pes was minimized at 1 Hz during HFCWO; however, delta Ptr decreased continuously with decreasing frequency and, below 2 Hz, became progressively smaller than the corresponding values obtained with HFAO and CMV.
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Affiliation(s)
- M C Khoo
- Department of Biomedical Engineering, University of Southern California, Los Angeles 90089
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Abstract
An alternative method of evaluating pulmonary mechanical function that uses short duration flow pulses was applied in five adult rabbits with high frequency flow interruption (HFFI) at 4 cycles per second. Variations in the total pressure across the respiratory system were partitioned into separate lungs and chest wall components, and the mechanical impedance of each component was evaluated in the range of 4 to 40 Hz using cross and power spectral analysis and spectral averaging. The resistances, R, of the respiratory system, lungs, and chest wall were 23.5 (2.3 SD), 18.6 (2.8), and 4.9 (1.5) cm H2O.L-1.s, respectively. These values were similar to R obtained by the conventional method at ordinary rates of ventilation, with the exception of chest wall resistance, which was approximately 50% smaller than R obtained by the conventional method. The compliances of the respiratory system, lungs and chest wall were 1.40 (0.19), 2.88 (0.94), and 2.85 (0.86) ml.cm H2O-1, respectively. In all cases, compliance values obtained by pulse analysis were roughly 70% of the values obtained by the conventional method. The smaller compliance values obtained with the pulse method may reflect the multicompartment behavior of the lungs and chest wall at the high frequencies found in the pulse spectra. We conclude that the response of the respiratory system to short duration flow pulses may be used to evaluate pulmonary mechanical function. The brief duration of the flow pulse suggests that this method may be well suited to evaluate lung function in uncooperative subjects, particularly newborns and premature infants.
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Affiliation(s)
- K J Sullivan
- Department of Biomedical Engineering, University of Southern California, Los Angeles 90089-1451
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24
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Sullivan KJ, Durand M, Ye TH, Chang HK. Gas exchange during high frequency flow-interruption in rabbits before and after bronchoalveolar lavage. Pediatr Res 1988; 24:203-8. [PMID: 3141893 DOI: 10.1203/00006450-198808000-00013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The performance of a high frequency flow-interrupter (HFFI) type neonatal ventilator was evaluated on nine adult rabbits (control) and on five adult rabbits after bronchoalveolar lavage (BAL). Tidal volumes and airway pressures were measured during conventional ventilation and during HFFI at rates of 4, 6, 8, 10, and 12 cycles/s. Tidal volumes were adjusted to maintain PaCO2 between 35 and 42 mm Hg in control rabbits and 35-55 mm Hg in BAL rabbits; a positive end-expiratory pressure of 4 cm H2O was applied to BAL rabbits to reduce atelectasis and improve gas exchange. The normalized tidal volume required to maintain PaCO2 within the specified range during HFFI varied between 2.02 ml/kg (0.30 SD) and 2.55 (0.41) in control rabbits and between 2.65 (0.57) and 2.97 (0.51) in BAL rabbits. In neither group did the normalized tidal volume vary systematically with the rate of ventilation (p less than 0.05). Mean airway pressures were lower during HFFI than during conventional ventilation in control rabbits but comparable in the BAL group. Peak inflation pressures were greater during HFFI than conventional ventilation in control rabbits but similar in the BAL group. End-expiratory lung volume was not affected by ventilation rate during HFFI in control rabbits. We conclude 1) that HFFI can maintain gas exchange in rabbits suffering from acute respiratory distress with airway pressures that are comparable to those measured during conventional ventilation and 2) the capacity of HFFI to ventilate the lungs with significantly lower airway pressures than conventional ventilation depends, in part, on the condition of the lungs.
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Affiliation(s)
- K J Sullivan
- Department of Biomedical Engineering, University of Southern California, Los Angeles 90089-1451
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25
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Abstract
In eight tracheotomized adult rabbits placed in the supine position, we employed a catheter-tip piezoresistive pressure transducer to measure esophageal pressure (Pes) and assessed the validity of taking the changes in Pes to be the changes in pleural pressure (Ppl). We applied an occlusion test in which the tracheal cannula was occluded during either spontaneous inspiratory efforts or body surface oscillations ranging from 3 to 50 Hz. The relationship between Pes and airway opening pressure (Pao) was recorded. In all instances, the changes in Pes and Pao were virtually identical in both amplitude and phase. We conclude that, as evaluated by the occlusion test, a catheter-tip pressure transducer placed in the esophagus of rabbits can give adequate estimation of local pleural changes up to at least 50 Hz.
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Affiliation(s)
- D A Chartrand
- Department of Biomedical Engineering, University of Southern California, Los Angeles 90089
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