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Han X, Yan DM, Zhao XF, Matsuura H, Ding WG, Li P, Jiang S, Du BR, Du PG, Zhu X. Xiao Han, et al., GHGKHKNK Octapeptide (P-5m) Inhibits Metastasis of HCCLM3 Cell Lines via Regulation of MMP-2 Expression in in Vitro and in Vivo Studies. Molecules, 2012, 17, 1357-1372. Molecules 2012. [PMCID: PMC6269009 DOI: 10.3390/molecules17066996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The authors wish to make the following correction to this paper [1]: the correct name of the fourth author is Hiroshi Matsuura. [...]
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Affiliation(s)
- Xiao Han
- Department of Immunology, Norman Bethune College of Medicine, Jilin University, Changchun 130021, China; (X.H.); (D.-M.Y.); (X.-F.Z.); (P.L.); (B.-R.D.)
- Department of Microbial and Biochemical Pharmacy, College of Pharmaceutical Science, Beihua University, Jilin 132001, China;
| | - Dong-Mei Yan
- Department of Immunology, Norman Bethune College of Medicine, Jilin University, Changchun 130021, China; (X.H.); (D.-M.Y.); (X.-F.Z.); (P.L.); (B.-R.D.)
| | - Xiang-Feng Zhao
- Department of Immunology, Norman Bethune College of Medicine, Jilin University, Changchun 130021, China; (X.H.); (D.-M.Y.); (X.-F.Z.); (P.L.); (B.-R.D.)
| | - Hiroshi Matsuura
- Department of Physiology, Shiga University of Medical Science, Shiga 520-2192, Japan; (H.M.); (W.-G.D.)
| | - Wei-Guang Ding
- Department of Physiology, Shiga University of Medical Science, Shiga 520-2192, Japan; (H.M.); (W.-G.D.)
| | - Peng Li
- Department of Immunology, Norman Bethune College of Medicine, Jilin University, Changchun 130021, China; (X.H.); (D.-M.Y.); (X.-F.Z.); (P.L.); (B.-R.D.)
| | - Shuang Jiang
- Department of Microbial and Biochemical Pharmacy, College of Pharmaceutical Science, Beihua University, Jilin 132001, China;
| | - Bai-Rong Du
- Department of Immunology, Norman Bethune College of Medicine, Jilin University, Changchun 130021, China; (X.H.); (D.-M.Y.); (X.-F.Z.); (P.L.); (B.-R.D.)
| | - Pei-Ge Du
- Department of Microbial and Biochemical Pharmacy, College of Pharmaceutical Science, Beihua University, Jilin 132001, China;
- Authors to whom correspondence should be addressed; (P.-G.D.); (X.Z.); Tel.: +86-431-8561-9476
| | - Xun Zhu
- Department of Immunology, Norman Bethune College of Medicine, Jilin University, Changchun 130021, China; (X.H.); (D.-M.Y.); (X.-F.Z.); (P.L.); (B.-R.D.)
- Authors to whom correspondence should be addressed; (P.-G.D.); (X.Z.); Tel.: +86-431-8561-9476
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Dong LF, Geng YQ, Yan DM, Ji YF, Shen ZK, Tong GL, Li B. [Spectra line profile and vibrational temperature of bright dot and dark dot discharge in a dielectric barrier discharge]. Guang Pu Xue Yu Guang Pu Fen Xi 2012; 32:1487-1489. [PMID: 22870625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The emission spectrum line shift and vibrational temperature of the bright dot and dark dot discharges, which are observed in the argon and air dielectric barrier discharge at high temperature for the first time were measured and compared. The line shift of the spectral line of the Ar I (2P2-->1S5) is measured and the vibrational temperature was calculated using by the emission spectral lines of the N2 second positive band system (C3Pi(u)-->B3Pi(g)). The results show that the spectrum line shift of the bright dot discharge channel is larger than that of the dark dot channel, which indicates that the former has higher electron density compared to the latter, and the vibrational temperature of the dark dot discharge channel is higher than that of the bright dot discharge channel.
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Affiliation(s)
- Li-Fang Dong
- College of Physics Science and Technology, Hebei University, Baoding 071002, China.
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53
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Jiang HF, Yan DM, Zhu SL, Wang DY, Zhang Y, Zhu H, An HQ, Xu WB, Kong XH. [Analysis of genetic characteristics of type II non-wild poliovirus in mainland China, 2010]. Bing Du Xue Bao 2012; 28:130-135. [PMID: 22519174] [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: 05/31/2023]
Abstract
To study the genetic characteristics of 123 type II non-wild polioviruses isolated from acute flaccid paralysis (AFP) cases in mainland China in 2010, provide the scientific basis for maintaining the "polio-free" status, and the switching use of polio vaccine for China. VP1 gene was amplified by reverse transcription-polymerase chain reaction (RT-PCR) and the PCR products were then sequenced. The sequence results were analyzed with Sequencher 4.8, BioEdit 7.0.9 and MEGA 5.0. Of 65 strains, nt2909 was found to be a mutation hotspot, and also a neurovirulence determinant in VP1 region. During 2010, two vaccine-derived polioviruses (VDPVs) were isolated from Yunnan province, China and no wild poliovirus (WPV) was isolated. The epidemiological studies and laboratory results of the two VDPVs showed that they were newly discovered VDPVs because of the genetic difference from other VDPVs strains isolated in the world, implying the sensitive poliovirus surveillance network could timely detect the transmission of VDPVs and the importation of WPV.
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Affiliation(s)
- Hua-Fang Jiang
- Beijing Children's Hospital Affiliate to Capital Medical University, Beijing 100045, China.
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54
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Han X, Yan DM, Zhao XF, Hiroshi M, Ding WG, Li P, Jiang S, Du BR, Du PG, Zhu X. GHGKHKNK octapeptide (P-5m) inhibits metastasis of HCCLM3 cell lines via regulation of MMP-2 expression in in vitro and in vivo studies. Molecules 2012; 17:1357-72. [PMID: 22395332 PMCID: PMC6268966 DOI: 10.3390/molecules17021357] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [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: 12/05/2011] [Revised: 01/19/2012] [Accepted: 01/27/2012] [Indexed: 02/02/2023] Open
Abstract
P-5m, an octapeptide derived from domain 5 of HKa, was initially found to inhibit the invasion and migration of melanoma cells. The high metastatic potential of melanoma cells was prevented by the HGK motif in the P-5m peptide in vitro and in an experimental lung metastasis model, suggesting that P-5m may play an important role in the regulation of tumor metastasis. The aim of this study was to measure the effect of P-5m on tumor metastasis of human hepatocarcinoma cell line (HCCLM3) in vitro and in vivo in a nude mouse model of hepatocellular carcinoma (HCC), and detect the mechanisms involved in P-5m-induced anti-metastasis. By gelatin zymography, matrix metallo-proteinases 2 (MMP-2) activity in HCCLM3 was dramatically diminished by P-5m peptide. In addition, the migration and metastasis of HCCLM3 cells was also inhibited by the peptide in vitro. In an orthotopic model of HCC in nude mice, P-5m treatment effectively reduced the lung metastasis as well as the expression of MMP-2 in the tumor tissues. Overall, these observations indicate an important role for P-5m peptide in HCC invasion and metastasis, at least partially through modulation MMP-2 expression. These data suggests that P-5m may have therapeutic potential in metastatic human hepatocarcinoma.
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MESH Headings
- Animals
- Antineoplastic Agents/pharmacology
- Biological Products/pharmacology
- Carcinoma, Hepatocellular/drug therapy
- Carcinoma, Hepatocellular/genetics
- Carcinoma, Hepatocellular/metabolism
- Carcinoma, Hepatocellular/pathology
- Cell Line, Tumor
- Cell Movement/drug effects
- Cell Movement/genetics
- Disease Models, Animal
- Female
- Humans
- Kininogen, High-Molecular-Weight/genetics
- Kininogen, High-Molecular-Weight/metabolism
- Liver Neoplasms/drug therapy
- Liver Neoplasms/genetics
- Liver Neoplasms/metabolism
- Liver Neoplasms/secondary
- Lung Neoplasms/genetics
- Lung Neoplasms/metabolism
- Lung Neoplasms/prevention & control
- Lung Neoplasms/secondary
- Matrix Metalloproteinase 2/biosynthesis
- Matrix Metalloproteinase 2/genetics
- Matrix Metalloproteinase 2/metabolism
- Mice
- Mice, Inbred BALB C
- Mice, Nude
- Neoplasm Invasiveness
- Neoplasm Metastasis
- Oligopeptides/pharmacology
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Affiliation(s)
- Xiao Han
- Department of Immunology, Norman Bethune College of Medicine, Jilin University, Changchun 130021, China; (X.H.); (D.-M.Y.); (X.-F.Z.); (P.L.); (B.-R.D.)
- Department of Microbial and Biochemical Pharmacy, College of Pharmaceutical Science, Beihua University, Jilin 132001, China;
| | - Dong-Mei Yan
- Department of Immunology, Norman Bethune College of Medicine, Jilin University, Changchun 130021, China; (X.H.); (D.-M.Y.); (X.-F.Z.); (P.L.); (B.-R.D.)
| | - Xiang-Feng Zhao
- Department of Immunology, Norman Bethune College of Medicine, Jilin University, Changchun 130021, China; (X.H.); (D.-M.Y.); (X.-F.Z.); (P.L.); (B.-R.D.)
| | - Matsuura Hiroshi
- Department of Physiology, Shiga University of Medical Science, Otsu, Shiga 520-2192, Japan; (M.H.); (W.-G.D.)
| | - Wei-Guang Ding
- Department of Physiology, Shiga University of Medical Science, Otsu, Shiga 520-2192, Japan; (M.H.); (W.-G.D.)
| | - Peng Li
- Department of Immunology, Norman Bethune College of Medicine, Jilin University, Changchun 130021, China; (X.H.); (D.-M.Y.); (X.-F.Z.); (P.L.); (B.-R.D.)
| | - Shuang Jiang
- Department of Microbial and Biochemical Pharmacy, College of Pharmaceutical Science, Beihua University, Jilin 132001, China;
| | - Bai-Rong Du
- Department of Immunology, Norman Bethune College of Medicine, Jilin University, Changchun 130021, China; (X.H.); (D.-M.Y.); (X.-F.Z.); (P.L.); (B.-R.D.)
| | - Pei-Ge Du
- Department of Microbial and Biochemical Pharmacy, College of Pharmaceutical Science, Beihua University, Jilin 132001, China;
- Authors to whom correspondence should be addressed; (P.-G.D.); (X.Z.); Tel.: +86-431-8561-9476
| | - Xun Zhu
- Department of Immunology, Norman Bethune College of Medicine, Jilin University, Changchun 130021, China; (X.H.); (D.-M.Y.); (X.-F.Z.); (P.L.); (B.-R.D.)
- Authors to whom correspondence should be addressed; (P.-G.D.); (X.Z.); Tel.: +86-431-8561-9476
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55
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Liu YP, Zhang CY, Chen CN, Yan DM, Chen SK, Li J, Li H, Dai RY. [The role of mir-221/222 in inhibiting endoplasmic reticulum stress-induced human hepatocarcinoma cell apoptosis]. Zhonghua Gan Zang Bing Za Zhi 2011; 19:191-5. [PMID: 21586237 DOI: 10.3760/cma.j.issn.1007-3418.2011.03.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To investigate the role of miR-221/222 in inhibiting endoplasmic reticulum stress-induced human hepatocarcinoma cells apoptosis. METHOD miR-221/222 mimics and inhibitors were used to mimic or block the function of endogenous miR-221/222 respectively. Western blot and flow cytometry were used to test the effects of miR-221/222 on cell cycle and apoptosis under endoplasmic reticulum stress in human hepatocellular carcinoma cells. RESULTS Endoplasmic reticulum stress resulted in miR-221/222 down-regulation in human hepatocellular carcinoma cells. miR-221/222 mimics and inhibitors inhibited and promoted respectively endoplasmic reticulum stress-mediated p27Kip1 induction. Moreover, p27Kip1 suppression not only resulted in reduction in the fraction of G1 phase cells, but also promoted the endoplasmic reticulum stress-mediated apoptosis in human hepatocellular carcinoma cells. CONCLUSION miR-221/222 were downregulated by endoplasmic reticulum stress in human hepatocellular carcinoma cells, which subsequently protected human hepatocellular carcinoma cells against endoplasmic reticulum stress-induced apoptosis through p27Kip1 regulation.
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Affiliation(s)
- You-Ping Liu
- Department of Biochemistry, Luzhou Medical College, Luzhou Sichuan, China
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Yan DM, Liu YP, Dai RY, Duan CY, Chen SK. Proteomic profiling of human hepatocellular carcinoma SMMC-7721 cells under endoplasmic reticulum stress induced with dithiothreitol. Shijie Huaren Xiaohua Zazhi 2011; 19:1331-1335. [DOI: 10.11569/wcjd.v19.i13.1331] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To explore new therapy targets for human hepatocellular carcinoma by proteomic profiling of human hepatocellular carcinoma SMMC-7721 cells under endoplasmic reticulum stress.
METHODS: Cultured SMMC-7721 cells were divided into two groups: experimental group and control group. The experimental group was treated with dithiothreitol (DTT, 2.5 mmol/L), while the control group was treated with equal volume of culture medium. After treatment, total cell proteins were prepared and resolved by two-dimensional electrophoresis (2-DE). The two-dimensional electrophoresis maps for the two groups of cells were analyzed using ImageMaster 2D Platinum software. Proteins that showed obvious expression alteration in the experimental group were identified by matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF-MS).
RESULTS: There were 844 ± 46 protein spots in the 2-DE map for the experimental group and 1 015 ± 63 protein spots for the control group. There were 593 ± 23 pairs of matched protein spots between the two groups, and the matching rate was about 71%. Most of the proteins have an isoelectric point at pH5.2-6.5 and a molecular weight of 15 000-80 000 Da. Three protein spots showed 2-fold or greater differential expression between the two groups and were identified by MALDI-TOF-MS. They were protein fem-1 homolog B, cyclin A1, and proliferation-inducing protein 44.
CONCLUSION: Three differentially expressed proteins in SMMC-7721 cells under endoplasmic reticulum stress were identified and may be useful molecular targets for the diagnosis and treatment of hepatocellular carcinoma.
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Chen R, Dai RY, Duan CY, Liu YP, Chen SK, Yan DM, Chen CN, Wei M, Li H. Unfolded protein response suppresses cisplatin-induced apoptosis via autophagy regulation in human hepatocellular carcinoma cells. Folia Biol (Praha) 2011; 57:87-95. [PMID: 21888831] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
It has been shown that drug resistance is extremely common in hepatocellular carcinoma (HCC) and is one of the major problems in HCC chemotherapy. However, the detailed mechanisms remain largely unknown. We have previously shown that endoplasmic reticulum (ER) stress is involved in the tumorigenesis of HCC. Here, we demonstrated that the unfolded protein response (UPR) inhibits cisplatin-induced HCC cell apoptosis. In HCC cells, cisplatin treatment triggers the UPR, which subsequently inhibits cisplatin-induced apoptosis. Importantly, mild ER stress precondition suppresses the sensitivity of HCC cells to cisplatin-induced apoptosis through autophagy regulation. Furthermore, heat-shock protein 27 (Hsp27) is involved in the cytoprotective role of the UPR in cisplatin-induced apoptosis. We also demonstrated that Hsp27 inhibits cisplatin- induced HCC cell death through autophagy activation. Taken together, our results indicate that the UPR inhibits cisplatin-induced apoptosis in HCC cells, at least in part, by Hsp27-mediated autophagy activation.
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Affiliation(s)
- R Chen
- Department of Public Health, Hospital of Chinese Traditional Medicine, Luzhou Medical College, Luzhou, Sichuan, P.R. China
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He D, Bai RT, Zhang Y, Shan ZL, Li L, Liu J, Ma JX, Zhang XX, Yan DM, Xu WB. [RT-PCR identification and genetic characterizations of VP1 region of human enterovirus 71 isolated in Beijing in 2008]. Zhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi 2010; 24:421-423. [PMID: 21604564] [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: 05/30/2023]
Abstract
OBJECTIVE To study the genetic characterizations of VP1 region of Human enterovirus 71 (HEV71) isolated from clinical specimens of hand, foot and mouth disease (HFMD) patients in Beijing in 2008. METHODS 285 clinical samples were collected from HFMD patients in hospitals and day-care centers in Chaoyang district. They were performed by reverse transcription-polymerase chain reaction (RT-PCR) specific for HEV71. 10 HEV71 isolates were selected for entire VP1 coding gene amplification and sequencing. RESULTS 129 samples were RT-PCR positive, the positive rate is 45.26%. The homology of the nucleotide and the amino acid of the 10 strains were 94.6%-99.6% and 95.9%-100%. The phylogenetic tree revealed that 10 Beijing strains clustered within the C4a evolution branch of C4 subgenotype. CONCLUSIONS RT-PCR played an important role in identifying HFMD outbreak in Beijing in 2008. The HEV71 strains were all belong to C4a evolution branch of C4 subgenotype with several transmission chains, and it showed that C4 subgenotype HEV71 spread in mainland China widely after 1998. The molecular epidemiology surveillance and the research of genetic characterizations of HEV71 should be strengthened in mainland China.
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Affiliation(s)
- Dian He
- Chaoyang Center for Disease Control and Prevention, Beijing 100021, China.
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Zhang P, Xu KL, DU B, Yan DM, Pan XY. [Inhibition of evi1 expression by siRNA in HEL cell line]. Zhongguo Shi Yan Xue Ye Xue Za Zhi 2010; 18:1455-1459. [PMID: 21176350] [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: 05/30/2023]
Abstract
The aim of study was to investigate the inhibitory effect of small interfering RNA on evi1 gene expression and biological characteristics in HEL cells and its mechanism. 3 siRNA (siRNA-1, siRNA-2, siRNA-3) specific for evi1 gene were synthesized and transfected into HEL cells in vitro. Experiments were divided into test and control groups. MTT method was used to assay the inhibitory effect of siRNA on cell proliferation; semiquantitative RT-PCR was used to detect the expression of evi1 gene mRNA; the cell viability was determined by trypan blue dye test; the change of cell cycle and apoptosis of cells were analyzed by flow cytometry. The results showed that siRNA-1 had strongest effect, and inhibitory effect was most obvious at 48 hours after transfection. When the concentration of siRNA raised to 120 nmol/L, the inhibitory rate reached to the peak. The inhibitory rate of siRNA-1 on proliferation of HEL cells, relative expression level of evi1 mRNA and cell viability at 48 hours after transfection were 72.22 ± 2.80%, 27.31 ± 1.11% and 26.05 ± 2.49%, which had significant difference from other groups (p < 0.001). The siRNA resulted in arrest of cell cycle at G(0)/G(1) phase, the cell amount at S phase obviously decreased, the apoptotic rate of HEL cells obviously increased (p < 0.01). It is concluded that the siRNA specific for evi1 gene can suppress the proliferation of HEL cells, reduce the expression of evi1 mRNA, decrease the cell viability, arrest the cell cycle at G(0)/G(1) phase, suppress cell mitosis, and promote cell apoptosis.
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MESH Headings
- Apoptosis
- Cell Cycle
- Cell Line, Tumor
- Cell Proliferation
- DNA-Binding Proteins/metabolism
- Gene Expression Regulation, Leukemic
- Humans
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/pathology
- MDS1 and EVI1 Complex Locus Protein
- Proto-Oncogenes
- RNA Interference
- RNA, Messenger/genetics
- RNA, Small Interfering/genetics
- Transcription Factors/metabolism
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Affiliation(s)
- Pu Zhang
- Department of Hematology, Xuzhou Medical College Affiliated Hospital, Xuzhou 221002, Jiangsu Province, China
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Wang DY, Chen H, Yan DM, Zhang Y, An JJ, Ma JT, Zhu SL, Ma XM, An HQ, Xu WB. [Genetic characterization of coxsackievirus A16 isolated in Ningxia Hui Municipality in 2008]. Zhonghua Liu Xing Bing Xue Za Zhi 2010; 31:904-908. [PMID: 21162993] [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: 05/30/2023]
Abstract
OBJECTIVE To study the genetic characterization of coxsackievirus A16 (CVA16) strains isolated during an epidemic of hand, foot, and mouth disease (HFMD) in Ningxia Hui Municipality in 2008. METHODS Clinical samples were collected from HFMD patients in Ningxia Hui Municipality and CVA16 strains were isolated by viral isolation methods. Reverse transcription-polymerase chain reactions (RT-PCR), specific for CVA16 were performed with these CVA16 strains. Entire VP1 coding region amplification and sequencing were then performed and finally phylogenetic tree was constructed among Ningxia CVA16 strains and CVA16 representative strains of known genotypes and subgenotypes. RESULTS 70 Ningxia CVA16 strains were isolated from HFMD patients in Ningxia in 2008 and the homology of nucleotide and amino acid were 90.8%-100.0% and 98.9% - 100.0%, respectively. Phylogenetic characteristics of the strains reconfirmed that they could be divided into two distinct genotypes-A and B. Genotype B could be further divided into the subgenotypes B1 and B2, while all the 70 Ningxia CVA16 strains belonged to the co-circulated clusters B1a and B1b within subgenotype B1, which belonged to 2 viral transmission chains. CONCLUSION Our results indicated that subgenotype B1 CVA16 strains continued to circulate over a wide geographic area of mainland China since the first reported episode in Shenzhen city in 1999. Like other CVA16 strains isolated elsewhere in China, both B1a and B1b evolution branches were co-circulating in Ningxia Hui Municipality. Based on the close phylgenetic and chronological relationship with CVA16 isolated in other countries and regions near China. Our data confirmed that these strains co-evolved and co-circulated with those from neighboring countries and regions.
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Affiliation(s)
- Dong-Yan Wang
- Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, State Key Laboratory Molecular Virology & Genetic Engineering, World Health Organization Western Pacific Region Regional Reference Poliovirus Laboratory, Beijing 100050, China
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Yan DM, Chang YX, Wang YF, Liu EW, Li J, Kang LY, Gao XM. In vivo pharmacokinetics of bakuchiol after oral administration of bakuchiol extraction in rat plasma. J Ethnopharmacol 2010; 128:697-702. [PMID: 20051255 DOI: 10.1016/j.jep.2009.12.039] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2009] [Revised: 09/27/2009] [Accepted: 12/28/2009] [Indexed: 05/28/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Psoralea corylifolia L. (Fabaceae) was a traditional Chinese medicine for the treatment of various skin diseases such as psoriasis, vitiligo and chronic graft-versus-host, and has been proved to show anticancer, cytotoxic, anti-bacterial, cardiac, diaphoretic, diuretic, stimulant, aphrodisiac and tonic effects. Bakuchiol was one of the main active ingredients of this traditional Chinese medicine. AIM OF THE STUDY In this paper, pharmacokinetic study was conducted to obtain pharmacokinetic parameters of bakuchiol. MATERIALS AND METHODS Bakuchiol was enriched using resin inform the ethanol extract of Psoralea corylifolia L., HPLC-UV was used to determine the concentration of bakuchiol in rat plasma at different time points after administration. The main pharmacokinetic parameters of bakuchiol in rat were obtained based on the analysis of the plasma sample. RESULTS The pharmacokinetics of bakuchiol was fitted with a two-compartment model and it was eliminated relative slowly in rats. CONCLUSIONS The HPLC-UV method was successfully applied to study the pharmacokinetics of bakuchiol in rats.
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Affiliation(s)
- Dong-Mei Yan
- The Key Laboratory for Prescription of National Educational Ministry of China, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
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Chen M, Yan DM, Zhu H. [Gene characteristic of VP1 region of poliovirus isolates from acute flaccid paralysis in Hebei Province]. Zhongguo Yi Miao He Mian Yi 2010; 16:33-37. [PMID: 20450070] [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: 05/29/2023]
Abstract
OBJECTIVE In order to provide the evidence for polio free status, the VP1 gene characteristic analysis of poliovirus isolated from acute flaccid paralysis (AFP) cases and close contacts were conducted in Hebei Province during 2007-2008. METHODS Virus isolation and identification were conducted according to the 4th edition of WHO polio laboratory manual. The sequence of VP1 region were amplified and sequenced. The phylogenetic trees based on VP1 region were constructed. RESULT The total number of poliovirus isolates were 42. Most isolates were type II and III. No wild poliovirus and vaccine derived poliovirus (VDPVs) was detected. CONCLUSION Gene characteristic of VP1 region of poliovirus can be used to identify the polio virus transmission and guide the work of immunization program.
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Affiliation(s)
- Mei Chen
- Hebei Provincial Center for Disease Control and Prevention, Shijiazhuang 050021, Hebei, China
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Dai RY, Chen SK, Yan DM, Chen R, Lui YP, Duan CY, Li J, He T, Li H. PI3K/Akt promotes GRP78 accumulation and inhibits endoplasmic reticulum stress-induced apoptosis in HEK293 cells. Folia Biol (Praha) 2010; 56:37-46. [PMID: 20492754] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The potential pro-survival role of phosphatidylinositol 3-kinase (PI3K)/Akt during endoplasmic reticulum stress has been well-characterized. However, the detailed mechanisms remain largely unknown. Here, we showed that PI3K/Akt inhibition promoted endoplasmic reticulum stress-induced apoptosis in a glucose-regulated protein 78 (GRP78)-dependent manner. During endoplasmic reticulum stress, high levels of Akt phosphorylation were sustained for at least 18 h in HEK293 cells. Importantly, PI3K/Akt enhanced GRP78 accumulation through increasing its stability following endoplasmic reticulum stress. Furthermore, Akt1, but not Akt2 or Akt3, was involved in GRP78 stability regulation. These results suggest that PI3K/Akt inhibits endoplasmic reticulum stress-induced apoptosis in HEK293 cells, at least in part, by promoting GRP78 protein stability.
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Affiliation(s)
- R Y Dai
- Department of Biochemistry, Luzhou Medical College, Luzhou, Sichuan, P.R. China
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Chang YX, Yan DM, Chen LL, Ding XP, Qi J, Kang LY, Zhang BL, Yu BY. Potency fingerprint of herbal products Danshen injection for their quality evaluation. Chem Pharm Bull (Tokyo) 2009; 57:586-90. [PMID: 19483338 DOI: 10.1248/cpb.57.586] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The fingerprint technique has been studied frequently as a useful strategy for quality of traditional Chinese medicine. A novel potency fingerprint that can quantitatively analyze the antioxidant activity of individual constituent and provide the total antioxidant activities of the samples has been developed by high-performance liquid chromatography coupled with ultraviolet and pyrogallol-luminol chemiluminescence detection (HPLC-diode array detection (DAD)-PLD). Hierarchical clustering analysis has been used as a powerful pattern recognition tool to identify and classify Danshen injection from different factories. In addition, the combination use of the chromatographic fingerprint and potency fingerprint with principal component analysis was applied to quality control of Danshen injection. The results demonstrated that the proposed potency fingerprint was a useful means to control the quality and to clarify the possible mechanism of action of herbal products.
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Affiliation(s)
- Yan-Xu Chang
- The Key Laboratory for Prescription of National Educational Ministry of China, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
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Ding LX, Zhang Y, Li J, Dou XF, Yan DM, Zhu SL, An HQ, Xu WB. [Outbreak of acute hemorrhagic conjunctivitis in Beijing City in 2007 caused by coxsackievirus A24 variant: molecular identification and phylogenetic analysis]. Bing Du Xue Bao 2009; 25:251-256. [PMID: 19769156] [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: 05/28/2023]
Abstract
In 2007, an outbreak of acute hemorrhagic conjunctivitis (AHC) occurred in Beijing. In order to identify the etiology of this outbreak, 57 eye conjunctival swabs were collected from 57 outpatient patients, and detected for adenovirus, human enterovirus 70 (HEV70) and Coxsackievirus A24 variant (CVA24v) genes by using RT-PCR or PCR methods. The results showed that 38 were positive for CVA24v, the positive rate was 66.7%, but none was positive for HEV70 and adenovirus, showing that this outbreak was caused by CVA24v. 9 viral isolates were obtained from 57 clinical specimens by using viral isolation method, and all were identified as CVA24v by molecular typing method. All 9 CVA24v isolates were performed by VP1 sequencing, the results showed that except for strain 0744/BJ/CHN/2007, the variability at nucleotide acid level and amino acid level among other 8 CVA24v were relatively low, and the homologies were more than 99.6% and 100.0%, respectively; the homologies of nucleotide acid and amino acid between strain 0744/BJ/CHN/2007 and other 8 CVA24v were 96.8%-97.2% and 99.7%, respectively. Phylogenetic analysis of 9 CVA24v revealed that they represented the Clade 4 and Clade 5 in Group I, showed that this outbreak was caused by at least 2 viral transmission chains. Comparing to 3C region of CVA24v frequently used before, VP1 region was considered as the most rigorous target for molecular epidemiology study of CVA24v. To enhance the research of sero-epidemiology and molecular epidemiology of CVA24v and to know the genetic characterizations and molecular evolution of CVA24v are most important to prevent and control the outbreaks of AHC in China.
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Affiliation(s)
- Li-Xin Ding
- Institute for Communicable Disease and Endemic Disease Control, Beijing Center for Disease Control and Prevention, Beijing 100013, China.
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Ma JT, Chen H, Ma XM, Hao Q, Zhan J, Xia Q, Yan DM, Wang DY, Xu WB. [Genetic characterization of enterovirus 71 stains isolated in Ningxia province in 2008]. Zhonghua Liu Xing Bing Xue Za Zhi 2009; 30:726-728. [PMID: 19957601] [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: 05/28/2023]
Abstract
OBJECTIVE To study the genetic characterization of enterovirus 71 (EV71) strains isolated from specimens of patients with hand-foot-mouth disease (HFMD) in Ningxia province in 2008. METHODS All the stool, throat swab and vesicle samples that collected from patients with HFMD were cultured. The positive isolates were identified by reverse transcriptase PCR (RT-PCR) with specific primers of EV71. Complete VP1 gene sequences (891 nucleotides) of 29 strains (part of 93 EV71 strains) were determined and compared with A, B and C genotype reference EV71 strains while EV71 China isolates by homogeneity and phylogenetic tree analyses. RESULTS 215 strains of EV were isolated from 439 specimens. Results from RT-PCR indicated that 93 strains belong to EV71. Phylogenetic tree analysis revealed that the selected 29 stains were clustered with reference strains of C4 subgenotype. The nucleotide identity with C4 reference strains was 91.7%-99.4%. The amino acid homogeneity was 96.6%-100.0%. CONCLUSION The recently identified EV71 strains in Ningxia province belonged to subgenotype C4 which resembled to most of the isolates in China.
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Affiliation(s)
- Jiang-Tao Ma
- Ningxia Center for Disease Control and Prevention, Yinchuan, China
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Yan DM, Zhu SL, Zhang Y. [Analysis on identification and genetic character of type I vaccine-derived poliovirus in Shanxi province in 2007]. Zhongguo Yi Miao He Mian Yi 2009; 15:131-134. [PMID: 20077658] [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: 05/28/2023]
Abstract
OBJECTIVE To describe the source of vaccine-derived poliovirus (VDPV) and the effect on local polio-free status, the VP1 coding region was sequenced and analyzed for type I VDPV in Shanxi province in 2007. METHOD The virus isolation was performed to double stool specimens from one case acute flaccid paralysis (AFP) patient. VP1 coding region of the isolated stain was sequenced and analyzed. The phylogenetic tree was constructed based on VP1 region sequence between Shanxi strains and other type I VDPVs. RESULT 2 type I + II +III strains were isolated from double stool specimens from the AFP patient in Shanxi Province in 2007. VP1 sequencing of the two stains revealed > 1.0% divergence from the VP1 region of P I /Sabin vaccine strain. According to WHO criteria, the two stains were identified as type I vaccine-derived poliovirus (VDPV). Phylogenetic analysis based on VP1 coding sequence showed that the evolution distance of Shanxi type I VDPV was far away from other VDPVs detected in China. Moreover, no evidence supported the AFP patient as immunodeficiency patient. So Shanxi type I VDPVs were classified into ambiguous VDPV(aVDPV). CONCLUSION Considering the genetic character for Shanxi type I VDPV and the local OPV coverage, we highly suspected that an immunodeficiency patient in local area who long-term excreted VDPVs existed and resulted in the patient infection of VDPV in Shanxi in 2007. In the post era of polio eradication, the detection and management for the possible existing patient of long-term excretion VDPV should be strengthened.
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Affiliation(s)
- Dong-Mei Yan
- World Health Organization Western Pacific Region Regional Reference Polio Laboratory, Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
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Zhang Y, Tan XJ, Wang HY, Yan DM, Zhu SL, Wang DY, Ji F, Wang XJ, Gao YJ, Chen L, An HQ, Li DX, Wang SW, Xu AQ, Wang ZJ, Xu WB. An outbreak of hand, foot, and mouth disease associated with subgenotype C4 of human enterovirus 71 in Shandong, China. J Clin Virol 2009; 44:262-7. [PMID: 19269888 DOI: 10.1016/j.jcv.2009.02.002] [Citation(s) in RCA: 331] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2008] [Revised: 01/29/2009] [Accepted: 02/03/2009] [Indexed: 11/18/2022]
Abstract
BACKGROUND An outbreak of hand, foot, and mouth disease (HFMD) included 1149 people in Linyi City, Shandong Province, China, in 2007: three children died. OBJECTIVES To characterize the pathogens responsible for this outbreak and to analyze their genetic features. STUDY DESIGN A total of 233 clinical specimens were collected from 105 hospitalized patients, including 11 patients with severe HFMD. Virological investigations (direct RT-PCR, viral isolation and molecular identification) and phylogenetic analysis were performed. RESULTS Human enterovirus 71 (HEV71) was the main pathogen that caused this outbreak, based on clinical manifestations, epidemiological data, and laboratory results. Phylogenetic analysis indicated that the Shandong HEV71 isolates belonged to 3 lineages in subgenotype C4. Subgenotype C4 could be further divided into two clusters (C4a and C4b), which corresponded to two time periods. Cluster C4a HEV71 has been the predominant virus circulating in mainland China in the past 5 years. CONCLUSIONS The 2007 HFMD outbreak was mainly caused by HEV71 subgenotype C4 with 3 transmission chains. This virus has been continuously circulating in China since 1998. The Shandong strains co-evolved with isolates from other provinces in mainland China and neighboring countries.
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Affiliation(s)
- Yong Zhang
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Xuanwu District, Beijing, PR China
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Yan DM, Xu KL, Du B, Zeng LY, Lu QX, Pan XY. [In vitro expression of hemophilia B gene mediated by lentivirus]. Zhonghua Xue Ye Xue Za Zhi 2008; 29:583-586. [PMID: 19175982] [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: 05/27/2023]
Abstract
OBJECTIVE To construct a three plasmids lentiviral vector containing canine coagulation factor IX (cFIX) gene with ubiquinone promoter (PUB) and observe the expression of cFIX gene. METHODS Lentivirus was generated by transient three-plasmid transfection, namely, the VSV-G envelope expression cassette, the delta NRF packaging plasmid and the PTK 164 plasmid. Viral particles were used to infect the target cell, third passage mesenchymal stem cells (MSCs) and 293T cell respectively at MOI 3: 1. The cFIX activity was detected in cultured cells with one-stage clotting assay. RESULTS The MSCs were obtained in vitro. The lentivirus infected MSCs and 293T cells all expressed the active factor IX with the activity of (26.30 +/- 2.10)% and (19.70 +/- 1.53)%, respectively, which are significantly higher than that of control (1.00 +/- 0.05)%. CONCLUSIONS The lentiviral vector of three plasmids with ubiquinone promoter (PUB) was constructed and can transfect the MSCs and 293T cells.
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Affiliation(s)
- Dong-Mei Yan
- Department of Hematology, Affiliated Hospital of Xuzhou Medical College, Xuzhou 221002, China
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Zhang Y, Yan DM, Wang DY, Zhao R, Zhang DY, Ye XF, Zhu SL, An HQ, Xu WB. [Reevaluate the effect of G-480 point mutation that determines the neurovirulence of type I vaccine polioviruses]. Bing Du Xue Bao 2007; 23:1-8. [PMID: 17886713] [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: 05/17/2023]
Abstract
Whole genome sequencing of 9 type I circulating vaccine-derived polioviruses (cVDPVs) isolated in Guizhou Province in China revealed that reverse mutations did not occur in G-480 and U-525 which are known as the most important neurovirulence determinate sites, while other known neurovirulence determinate sites such as A-2438, A-2795, C-6203 and G-7441 did revert to Mahoney type. 5 type I cVDPVs were selected for neurovirulence test on PVR-Tg21 transgenic mice which express human poliovirus receptor gene based on their different nucleotide sequences, they all showed higher neurovirulence than P1/Sabin strain, and the neurovirulence of CHN8184 and CHN8229-1. 1 were comparable to that of wild type P1/Mahoney. The neurovirulence of CHN8229-1.1, CHN8229-2 and CHN8229-3 presented a trend of decreasing, but still laid in high level. There were 7 nucleotide mutations between CHN8229-1.1 and CHN8229-2, and only 2 between CHN8229-2 and CHN8229-3 in their whole genomes, but the neurovirulence among them were relatively different, showing that there must be some unknown neurovirulence determinate sites among these mutations. Computer predicted RNA secondary structure of stem-loop V of the poliovirus 5' NCR of Guizhou type I cVDPVs was relatively stable. In the situation that no reverse mutation occurred in G-480, some type I cVDPVs already showed high neurovirulence nearly equal to P1/Mahoney, it meant that the effect of G-480 point mutation that determined neurovirulence of P1/Sabin strain has been overestimated, G-480 was not the only important site to determine neurovirulence in P1/Sabin strain, others also may play the very important role. More details are needed to elucidate the mechanism of attenuation in type I polioviruses.
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Affiliation(s)
- Yong Zhang
- National Institute for Viral Disease Control and Prevention, China CDC, Beijing 100052, China
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