1
|
Chen X, Wang W, Li Y, Huo Y, Zhang H, Feng F, Xi W, Zhang T, Gao J, Yang F, Chen S, Yang A, Wang T. MYSM1 inhibits human colorectal cancer tumorigenesis by activating miR-200 family members/CDH1 and blocking PI3K/AKT signaling. J Exp Clin Cancer Res 2021; 40:341. [PMID: 34706761 PMCID: PMC8549173 DOI: 10.1186/s13046-021-02106-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 09/16/2021] [Indexed: 01/17/2023]
Abstract
Background Histone epigenetic modification disorder is an important predisposing factor for the occurrence and development of many cancers, including colorectal cancer (CRC). The role of MYSM1, a metalloprotease that deubiquitinates monoubiquitinated histone H2A, in colorectal cancer was identified to evaluate its potential clinical application value. Methods MYSM1 expression levels in CRC cell lines and tumor tissues were detected, and their associations with patient survival rate and clinical stage were analyzed using databases and tissue microarrays. Gain- and loss-of-function studies were performed to identify the roles of MYSM1 in CRC cell proliferation, apoptosis, cell cycle progression, epithelial-mesenchymal transition (EMT) and metastasis in vitro and in vivo. ChIP, rescue assays and signal pathway verification were conducted for mechanistic study. Immunohistochemistry (IHC) was used to further assess the relationship of MYSM1 with CRC diagnosis and prognosis. Results MYSM1 was significantly downregulated and was related to the overall survival (OS) of CRC patients. MYSM1 served as a CRC suppressor by inducing apoptosis and inhibiting cell proliferation, EMT, tumorigenic potential and metastasis. Mechanistically, MYSM1 directly bound to the promoter region of miR-200/CDH1, impaired the enrichment of repressive H2AK119ub1 modification and epigenetically enhanced miR-200/CDH1 expression. Testing of paired CRC patient samples confirmed the positive regulatory relationship between MYSM1 and miR-200/CDH1. Furthermore, silencing MYSM1 stimulated PI3K/AKT signaling and promoted EMT in CRC cells. More importantly, a positive association existed between MYSM1 expression and a favorable CRC prognosis. Conclusions MYSM1 plays essential suppressive roles in CRC tumorigenesis and is a potential target for reducing CRC progression and distant metastasis. Supplementary Information The online version contains supplementary material available at 10.1186/s13046-021-02106-2.
Collapse
Affiliation(s)
- Xu Chen
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, P.R. China.,Air Force Health Care Center for Special Services, Hangzhou, Zhejiang, 310007, P.R. China
| | - Wei Wang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, P.R. China
| | - Yufang Li
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, P.R. China.,Nuclear Medicine Diagnostic Center, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, 710032, P.R. China
| | - Yi Huo
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, P.R. China
| | - Han Zhang
- Department of Medical Genetics and Developmental Biology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, P.R. China
| | - Fan Feng
- Department of Digestive Surgery, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, Shaanxi, 710032, P.R. China
| | - Wenjin Xi
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, P.R. China
| | - Tianze Zhang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, P.R. China
| | - Jinjian Gao
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, P.R. China
| | - Fan Yang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, P.R. China
| | - Siyi Chen
- Department of Molecular Microbiology and Immunology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Angang Yang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, P.R. China.
| | - Tao Wang
- Department of Medical Genetics and Developmental Biology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, P.R. China.
| |
Collapse
|
2
|
Liu CY, Xi W, Zhou DX, Gong PH, Li J, Xu Y. [Pulmonary embolism secondary to osteosarcoma: a case report and literature review]. Zhonghua Xin Xue Guan Bing Za Zhi 2021; 49:920-922. [PMID: 34530601 DOI: 10.3760/cma.j.cn112148-20201014-00815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- C Y Liu
- Department of Respiratory and Critical Care Medicine, Peking University People's Hospital, Beijing 100044, China
| | - W Xi
- Department of Respiratory and Critical Care Medicine, Peking University People's Hospital, Beijing 100044, China
| | - D X Zhou
- Department of Respiratory and Critical Care Medicine, Peking University People's Hospital, Beijing 100044, China
| | - P H Gong
- Department of Respiratory and Critical Care Medicine, Peking University People's Hospital, Beijing 100044, China
| | - J Li
- Emergency Department, Peking University People's Hospital, Beijing 100044, China
| | - Y Xu
- Department of Respiratory and Critical Care Medicine, Peking University People's Hospital, Beijing 100044, China
| |
Collapse
|
3
|
Fan ZX, Xi W, Miao XY, Li LY, Miao GY. Circ_NCKAP1 promotes skin basal cell carcinoma progression by sponging the miR-148b-5p/HSP90 axis. Eur Rev Med Pharmacol Sci 2021; 25:5355-5364. [PMID: 34533810 DOI: 10.26355/eurrev_202109_26642] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Skin basal cell carcinoma (BCC) is the most common malignant skin tumor. Recent studies demonstrated that circular RNAs (circRNAs) are implicated in tumorigenesis and may represent potential therapeutic targets. The aim of the present study was to explore the expression profiles of circRNAs and their role in skin BCC. MATERIALS AND METHODS Three pairs of skin BCC tissues and adjacent tissues were used to perform a circRNA microarray for screening of circRNA expression profiles. Circ_NCKAP1 was selected as a target circRNA by RT-qPCR verification and bioinformatics analysis. The effect of circ_NCKAP1 knockdown on cell proliferation and apoptosis was assessed using CCK8 and Annexin V-FITC/PI assays, and its regulation over the miR-148b-5p/HSP90 axis was assessed by dual-luciferase reporter assay. RESULTS Circ_NCKAP1 was found to be significantly upregulated in skin BCC tissues (p<0.05). In vitro loss-of-function assays demonstrated that circ_NCKAP1 knockdown markedly inhibited cell proliferation and promoted cell apoptosis (p<0.05). Moreover, Dual-Luciferase reporter assay identified that circ_NCKAP1 could bind to miR-148b-5p directly, and HSP90 was targeted by miR-148b-5p. CONCLUSIONS Circ_NCKAP1 can promote skin BCC progression by sponging the miR-148b-5p/HSP90 axis, and circ_NCKAP1 may be a potential target for skin BCC therapy.
Collapse
Affiliation(s)
- Z-X Fan
- Department of Dermatology, Affiliated Hospital of Hebei University of Engineering, Handan, Heibei, China.
| | | | | | | | | |
Collapse
|
4
|
Zheng G, Guo Z, Li W, Xi W, Zuo B, Zhang R, Wen W, Yang AG, Jia L. Interaction between HLA-G and NK cell receptor KIR2DL4 orchestrates HER2-positive breast cancer resistance to trastuzumab. Signal Transduct Target Ther 2021; 6:236. [PMID: 34158475 PMCID: PMC8219715 DOI: 10.1038/s41392-021-00629-w] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 04/29/2021] [Accepted: 05/07/2021] [Indexed: 12/12/2022] Open
Abstract
Despite the successful use of the humanized monoclonal antibody trastuzumab (Herceptin) in the clinical treatment of human epidermal growth factor receptor 2 (HER2)-overexpressing breast cancer, the frequently occurring drug resistance remains to be overcome. The regulatory mechanisms of trastuzumab-elicited immune response in the tumor microenvironment remain largely uncharacterized. Here, we found that the nonclassical histocompatibility antigen HLA-G desensitizes breast cancer cells to trastuzumab by binding to the natural killer (NK) cell receptor KIR2DL4. Unless engaged by HLA-G, KIR2DL4 promotes antibody-dependent cell-mediated cytotoxicity and forms a regulatory circuit with the interferon-γ (IFN-γ) production pathway, in which IFN-γ upregulates KIR2DL4 via JAK2/STAT1 signaling, and then KIR2DL4 synergizes with the Fcγ receptor to increase IFN-γ secretion by NK cells. Trastuzumab treatment of neoplastic and NK cells leads to aberrant cytokine production characterized by excessive tumor growth factor-β (TGF-β) and IFN-γ, which subsequently reinforce HLA-G/KIR2DL4 signaling. In addition, TGF-β and IFN-γ impair the cytotoxicity of NK cells by upregulating PD-L1 on tumor cells and PD-1 on NK cells. Blockade of HLA-G/KIR2DL4 signaling improved the vulnerability of HER2-positive breast cancer to trastuzumab treatment in vivo. These findings provide novel insights into the mechanisms underlying trastuzumab resistance and demonstrate the applicability of combined HLA-G and PD-L1/PD-1 targeting in the treatment of trastuzumab-resistant breast cancer.
Collapse
Affiliation(s)
- Guoxu Zheng
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Zhangyan Guo
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Weimiao Li
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Wenjin Xi
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Baile Zuo
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Rui Zhang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Weihong Wen
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - An-Gang Yang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, China.
| | - Lintao Jia
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, China.
| |
Collapse
|
5
|
Xi W, Song N, Yan Q, Liang H, Zhang W. The analysis of the effects of Liuwei Dihuang decoction on aging-related metabolites and metabolic pathways in naturally aging mice by ultra-performance liquid chromatography quadruple time-of-light mass spectrometry. J Physiol Pharmacol 2021; 72. [PMID: 34810292 DOI: 10.26402/jpp.2021.3.09] [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] [Received: 04/20/2021] [Accepted: 06/30/2021] [Indexed: 06/13/2023]
Abstract
Liuwei Dihuang decoction (LWDH) has been used to treat age-related diseases in Asia for thousands of years. Its effect is significant, but the mechanism is not entirely understood. The development and maturity of metabonomics technology have created a new way to understand its effects. In this study, 20-month-old naturally aging mice were used as the research subjects. Mice were randomly divided into the young group, elderly group, vitamin E group, and LWDH group, with 10 mice in each group. The UPLC-Q-TOF-MS technique analyzed the changes in plasma metabolism of these mice. Principal component analysis (PCA) and orthogonal partial least-squares discriminant analysis (OPLS-DA) were used to study metabolic markers and metabolic pathways. Compared with the elderly group, the organ index and weightbearing swimming time of the LWDH and vitamin E groups increased (P ≤ 0.01). The results show that LWDH can benignly regulate the expression level of 11 aging-associated metabolites in aged mice and alleviate the aging state of mice. These metabolites mainly affect the metabolism of glutathione, unsaturated fatty acid biosynthesis, pyrimidine, selenium, pentose phosphate, arginine, and proline.
Collapse
Affiliation(s)
- W Xi
- Jangxi University of Traditional Chinese Medicine, Nachchang, China
| | - N Song
- Jangxi University of Traditional Chinese Medicine, Nachchang, China
| | - Q Yan
- Heilongjiang University of Chinese Medicine, Harbin, China
| | - H Liang
- Heilongjiang University of Chinese Medicine, Harbin, China.
| | - W Zhang
- Jangxi University of Traditional Chinese Medicine, Nachchang, China
| |
Collapse
|
6
|
Wei F, Jing H, Wei M, Liu L, Wu J, Wang M, Han D, Yang F, Yang B, Jiao D, Zheng G, Zhang L, Xi W, Guo Z, Yang AG, Qin W, Zhou Y, Wen W. Ring finger protein 2 promotes colorectal cancer progression by suppressing early growth response 1. Aging (Albany NY) 2020; 12:26199-26220. [PMID: 33346749 PMCID: PMC7803491 DOI: 10.18632/aging.202396] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 11/25/2019] [Accepted: 11/11/2020] [Indexed: 12/15/2022]
Abstract
Ring finger protein 2 (RNF2) is an important component of polycomb repressive complex 1. RNF2 is upregulated in many kinds of tumors, and elevated RNF2 expression is associated with a poor prognosis in certain cancers. To assess the function of RNF2 in colorectal cancer, we examined RNF2 protein levels in 313 paired colorectal cancer tissues and adjacent normal tissues. We then analyzed the association of RNF2 expression with the patients’ clinicopathologic features and prognoses. RNF2 expression was upregulated in colorectal cancer tissues and was associated with the tumor differentiation status, tumor stage and prognosis. In colorectal cancer cell lines, downregulation of RNF2 inhibited cell proliferation and induced apoptosis. Gene microarray analysis revealed that early growth response 1 (EGR1) was upregulated in RNF2-knockdown cells. Knocking down EGR1 partially reversed the inhibition of cell proliferation and the induction of apoptosis in RNF2-knockdown cells. RNF2 was enriched at the EGR1 promoter, where it mono-ubiquitinated histone H2A, thereby inhibiting EGR1 expression. These results indicate that RNF2 is oncogenic in colorectal cancer and may promote disease progression by inhibiting EGR1 expression. RNF2 is thus a potential prognostic marker and therapeutic target in colorectal cancer.
Collapse
Affiliation(s)
- Feilong Wei
- Department of Orthopedics, Tangdu Hospital, Fourth Military Medical University, Xi’an 710038, China
| | - Haoren Jing
- Department of Anorectal Surgery, Tianjin Union Medical Center, Nankai University Affiliated Hospital, Tianjin 300013, China
| | - Ming Wei
- Urology Department of No. 989 Hospital, Joint Logistics Support Force of PLA, Luoyang 471000, China
| | - Lei Liu
- Department of Gastroenterology, Tangdu Hospital, Fourth Military Medical University, Xi’an 710038, China
| | - Jieheng Wu
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi’an 710032, China
| | - Meng Wang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi’an 710032, China
| | - Donghui Han
- Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Fa Yang
- Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Bo Yang
- Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Dian Jiao
- Department of Urology, Tangdu Hospital, Fourth Military Medical University, Xi’an 710038, China
| | - Guoxu Zheng
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi’an 710032, China
| | - Lingling Zhang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi’an 710032, China
| | - Wenjin Xi
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi’an 710032, China
| | - Zhangyan Guo
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi’an 710032, China
| | - An-Gang Yang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi’an 710032, China
| | - Weijun Qin
- Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Yi Zhou
- Department of Anorectal Surgery, Tianjin Union Medical Center, Nankai University Affiliated Hospital, Tianjin 300013, China
| | - Weihong Wen
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an 710072, China
| |
Collapse
|
7
|
Wang J, Zhu M, Zhou X, Wang T, Xi Y, Jing Z, Xi W. MiR-140-3p inhibits natural killer cytotoxicity to human ovarian cancer via targeting MAPK1. J Biosci 2020. [DOI: 10.1007/s12038-020-00036-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
8
|
Wang J, Zhu M, Zhou X, Wang T, Xi Y, Jing Z, Xi W. MiR-140-3p inhibits natural killer cytotoxicity to human ovarian cancer via targeting MAPK1. J Biosci 2020; 45:66. [PMID: 32385217] [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: 06/11/2023]
Abstract
Natural killer (NK) cells have pivotal role in immunotherapy of human ovarian cancer (OC). Although microRNAs (miRNAs) participate in dysfunction of NK cells, how and whether miR-140-3p regulates cytotoxicity of NK cells in OC are uncertain. miR-140-3p and mitogen activated protein kinase 1 (MAPK1) abundances were examined via quantitative real-time polymerase chain reaction or western blot. Tumor necrosis factor-α (TNF-α) and interferon-γ (IFN-γ) abundances were examined via enzyme linked immunosorbent assay. NK cytotoxicity to OC was evaluated via lactate dehydrogenase release. The relevance of miR-140-3p and MAPK1 was proved via luciferase activity analysis. Murine xenograft experiment was applied to assess the function of miR-140-3p on NK cytotoxicity. miR-140-3p was elevated and MAPK1 was declined in NK cells from OC patients, while the levels were reversed after treatment of interleukin-2 (IL-2). MiR-140-3p addition mitigated IFN-γ and TNF-α production induced via IL-2 as well as NK-92 cytotoxicity to OC cells. Additionally, MAPK1 was negatively regulated via miR-140-3p and ablated the influence of miR140-3p on cytotoxicity, cytokines levels. Besides, miR-140-3p enrichment facilitated tumor growth via suppressing function of NK cells in a xenograft model. miR-140-3p suppressed NK cytotoxicity to OC cells via mediating MAPK1, indicating a new avenue of ameliorating NK cells function for OC treatment.
Collapse
Affiliation(s)
- Jiaying Wang
- Department of Gynecology and Obstetrics, The affiliated Hospital of Medical School of Ningbo University, Ningbo 31500, Zhejiang, China
| | | | | | | | | | | | | |
Collapse
|
9
|
Sun J, Hu X, Gao Y, Tang Q, Zhao Z, Xi W, Yang F, Zhang W, Song Y, Song B, Wang T, Wang H. MYSM1-AR complex-mediated repression of Akt/c-Raf/GSK-3β signaling impedes castration-resistant prostate cancer growth. Aging (Albany NY) 2019; 11:10644-10663. [PMID: 31761786 PMCID: PMC6914400 DOI: 10.18632/aging.102482] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 08/20/2019] [Accepted: 11/08/2019] [Indexed: 12/19/2022]
Abstract
Epigenetic alterations that lead to dysregulated gene expression in the progression of castration-resistant prostate cancer (CRPC) remain elusive. Here, we investigated the role of histone deubiquitinase MYSM1 in the pathogenesis of prostate cancer (PCa). Tissues and public datasets of PCa were evaluated for MYSM1 levels. We explored the effects of MYSM1 on cell proliferation, senescence and viability both in vitro and in vivo. Integrative database analyses and co-immunoprecipitation assays were performed to elucidate genomic association of MYSM1 and MYSM1-involved biological interaction network in PCa. We observed that MYSM1 were downregulated in CRPC compared to localized prostate tumors. Knockdown of MYSM1 promoted cell proliferation and suppressed senescence of CRPC cells under condition of androgen ablation. MYSM1 downregulation enhanced the tumorigenic ability in nude mice. Integrative bioinformatic analyses of the significantly associated genes with MYSM1 revealed MYSM1-correlated pathways, providing substantial clues as to the role of MYSM1 in PCa. MYSM1 was able to bind to androgen receptor instead of increasing its expression and knockdown of MYSM1 resulted in activation of Akt/c-Raf/GSK-3β signaling. Together, our findings indicate that MYSM1 is pivotal in CRPC pathogenesis and may be established as a potential target for future treatment.
Collapse
Affiliation(s)
- Jinbo Sun
- Department of Urology, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710038, China
| | - Xiangnan Hu
- Department of Urology, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710038, China
| | - Yongheng Gao
- Department of Respiratory and Critical Care Medicine, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710038, China
| | - Qisheng Tang
- Department of Urology, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710038, China
| | - Zhining Zhao
- Department of Urology, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710038, China.,Clinical Laboratory, 451 Hospital of Chinese People's Liberation Army, Xi'an, Shaanxi 710054, China
| | - Wenjin Xi
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Fan Yang
- Department of Urology, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710038, China
| | - Wei Zhang
- Department of Urology, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710038, China
| | - Yue Song
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Bin Song
- Department of Urology, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710038, China
| | - Tao Wang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi 710032, China.,Department of Medical Genetics and Developmental Biology, Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - He Wang
- Department of Urology, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710038, China
| |
Collapse
|
10
|
Jiao D, Li Y, Yang F, Han D, Wu J, Shi S, Tian F, Guo Z, Xi W, Li G, Zhao A, Yang AG, Qin W, Wang H, Wen W. Expression of Prostate-Specific Membrane Antigen in Tumor-Associated Vasculature Predicts Poor Prognosis in Hepatocellular Carcinoma. Clin Transl Gastroenterol 2019; 10:1-7. [PMID: 31116141 PMCID: PMC6602770 DOI: 10.14309/ctg.0000000000000041] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 03/12/2019] [Indexed: 12/14/2022] Open
Abstract
INTRODUCTION Prostate-specific membrane antigen (PSMA) was originally found to be specifically expressed in normal prostate, and its expression was upregulated in almost all stages of prostate cancer. In recent years, PSMA was also found to be expressed in tumor-associated vasculature in many nonprostatic solid tumors. However, the expression pattern of PSMA in hepatocellular carcinoma (HCC) is not well studied. METHODS In this study, we examined PSMA expression in 103 HCC tissues using immunohistochemical staining and analyzed the association between PSMA expression and other clinicopathological features and prognosis. RESULTS Among the 103 cases, 27 cases (26%) showed PSMA expression in more than 50% of tumor-associated vasculature, 49 cases (48%) showed PSMA expression in less than 50% of vasculature, and 27 cases (26%) did not have detectable PSMA expression. Vascular PSMA expression was associated with several clinicopathological features, such as tumor stage, tumor differentiation, lymph node metastasis, and Ki-67 index. Furthermore, high vascular PSMA expression was also associated with poor prognosis in patients with HCC. Univariate and multivariate analyses showed that high vascular PSMA expression can be used as an independent prognostic marker for HCC. DISCUSSION Our study provides the evidence that PSMA is specifically expressed in tumor-associated vasculature of HCC, and vascular PSMA expression may be used as a novel prognostic marker and a vascular therapeutic target for HCC.
Collapse
MESH Headings
- Adolescent
- Adult
- Aged
- Aged, 80 and over
- Antigens, Surface/analysis
- Antigens, Surface/metabolism
- Antineoplastic Agents/pharmacology
- Antineoplastic Agents/therapeutic use
- Biomarkers, Tumor/analysis
- Biomarkers, Tumor/antagonists & inhibitors
- Biomarkers, Tumor/metabolism
- Carcinoma, Hepatocellular/blood supply
- Carcinoma, Hepatocellular/mortality
- Carcinoma, Hepatocellular/pathology
- Carcinoma, Hepatocellular/therapy
- Female
- Follow-Up Studies
- Glutamate Carboxypeptidase II/analysis
- Glutamate Carboxypeptidase II/antagonists & inhibitors
- Glutamate Carboxypeptidase II/metabolism
- Hepatectomy
- Humans
- Immunohistochemistry
- Kaplan-Meier Estimate
- Liver/blood supply
- Liver/pathology
- Liver/surgery
- Liver Neoplasms/blood supply
- Liver Neoplasms/mortality
- Liver Neoplasms/pathology
- Liver Neoplasms/therapy
- Lymphatic Metastasis/pathology
- Male
- Middle Aged
- Neoplasm Staging
- Neovascularization, Pathologic/mortality
- Neovascularization, Pathologic/pathology
- Neovascularization, Pathologic/therapy
- Prognosis
- Time Factors
- Young Adult
Collapse
Affiliation(s)
- Dian Jiao
- Department of Urology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Yu Li
- Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Fa Yang
- Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Donghui Han
- Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Jieheng Wu
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Shengjia Shi
- Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Feng Tian
- Department of Urology, the Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Zhangyan Guo
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Wenjin Xi
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, China
| | | | | | - An-Gang Yang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Weijun Qin
- Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - He Wang
- Department of Urology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Weihong Wen
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, China
| |
Collapse
|
11
|
Li Q, Wu J, Xi W, Chen X, Wang W, Zhang T, Yang A, Wang T. Ctrp4, a new adipokine, promotes the differentiation of osteoblasts. Biochem Biophys Res Commun 2019; 512:224-229. [PMID: 30885436 DOI: 10.1016/j.bbrc.2019.03.053] [Citation(s) in RCA: 2] [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: 03/01/2019] [Accepted: 03/09/2019] [Indexed: 12/20/2022]
Abstract
Recent evidence suggests that adipokines are involved in the regulation of bone metabolism. Ctrp4 is a newly discovered member of the adipokine CTRP family. Studies have shown that Ctrp4 is involved in the regulation of tumor cell inflammatory signaling pathways and acts on the hypothalamus to regulate food intake, but its role in osteoblasts is not yet clear. In this study, we found that the expression of Ctrp4 in bone tissue was significantly decreased in the tail-suspended mouse, while that in ovariectomized-simulated osteoporosis mice decreased similarly, indicating that Ctrp4 was involved in osteogenesis regulation. We further isolated Alp-positive osteoblasts from the femur of tail-suspended rats and confirmed that the expression of Ctrp4, Bglap and Alp was down-regulated in the process of bone loss caused by tail suspension. In the process of inducing osteoblastic differentiation in vitro, Ctrp4 interfering significantly inhibited the expression of Alp and Bglap. In addition, inhibition of Ctrp4 resulted in decreased alkaline phosphatase expression and less alizarin red staining, indicating that Ctrp4 promoted osteogenic differentiation and osteoblasts mineralization. In conclusion, our results suggest that Ctrp4 is involved in bone metabolism regulation and promotes osteoblast differentiation, which may become a potential target for future intervention in bone metabolic diseases.
Collapse
Affiliation(s)
- Qi Li
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, PR China; State Key Laboratory of Space Medicine Fundamentals and Application, China Astronaut Research and Training Center, Beijing, 710032, PR China; Department of Health Technology Research and Development, SPACEnter Space Science and Technology Institute (Shenzhen), Shamiao Road 4#, Pingdi Street, Longgang District, Shenzhen, 518117, PR China
| | - Jieheng Wu
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, PR China
| | - Wenjin Xi
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, PR China
| | - Xu Chen
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, PR China
| | - Wei Wang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, PR China
| | - Tianze Zhang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, PR China
| | - Angang Yang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, PR China.
| | - Tao Wang
- Department of Medical Genetics and Developmental Biology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, PR China.
| |
Collapse
|
12
|
Chen X, Yang F, Zhang T, Wang W, Xi W, Li Y, Zhang D, Huo Y, Zhang J, Yang A, Wang T. MiR-9 promotes tumorigenesis and angiogenesis and is activated by MYC and OCT4 in human glioma. J Exp Clin Cancer Res 2019; 38:99. [PMID: 30795814 PMCID: PMC6385476 DOI: 10.1186/s13046-019-1078-2] [Citation(s) in RCA: 103] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Accepted: 02/06/2019] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Glioma, characterized by its undesirable prognosis and poor survival rate, is a serious threat to human health and lives. MicroRNA-9 (miR-9) is implicated in the regulation of multiple tumors, while the mechanisms underlying its aberrant expression and functional alterations in human glioma are still controversial. METHODS Expressions of miR-9 were measured in GEO database, patient specimens and glioma cell lines. Gain- and loss-of-function assays were applied to identify the effects of miR-9 on glioma cells and HUVECs in vitro and in vivo. Potential targets of miR-9 were predicted by bioinformatics and further verified via in vitro experiments. Transcriptional regulation of miR-9 by MYC and OCT4 was determined in glioma cells. RESULTS MiR-9 was frequently up-regulated in glioma specimens and cells, and could significantly enhance proliferation, migration and invasion of glioma cells. In addition, miR-9 could be secreted from glioma cells via exosomes and was then absorbed by vascular endothelial cells, leading to an increase in angiogenesis. COL18A1, THBS2, PTCH1 and PHD3 were verified as the direct targets of miR-9, which could elucidate the miR-9-induced malignant phenotypes in glioma cells. MYC and OCT4 were able to bind to the promoter region of miR-9 to trigger its transcription. CONCLUSIONS Our results highlight that miR-9 is pivotal for glioma pathogenesis and can be treated as a potential therapeutic target for glioma.
Collapse
Affiliation(s)
- Xu Chen
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, #169 Changle West Road, Xi’an, Shaanxi 710032 People’s Republic of China
| | - Fan Yang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, #169 Changle West Road, Xi’an, Shaanxi 710032 People’s Republic of China
- Department of Neurosurgery, General Navy Hospital of PLA, Beijing, 100048 People’s Republic of China
| | - Tianze Zhang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, #169 Changle West Road, Xi’an, Shaanxi 710032 People’s Republic of China
| | - Wei Wang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, #169 Changle West Road, Xi’an, Shaanxi 710032 People’s Republic of China
| | - Wenjin Xi
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, #169 Changle West Road, Xi’an, Shaanxi 710032 People’s Republic of China
| | - Yufang Li
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, #169 Changle West Road, Xi’an, Shaanxi 710032 People’s Republic of China
- Nuclear Medicine Diagnostic Center, Shaanxi Provincial People’s Hospital, Xi’an, Shaanxi 710032 People’s Republic of China
| | - Dan Zhang
- First Student Brigade, Fourth Military Medical University, Xi’an, Shaanxi 710032 People’s Republic of China
| | - Yi Huo
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, #169 Changle West Road, Xi’an, Shaanxi 710032 People’s Republic of China
- Department of Medical Genetics and Developmental Biology, Fourth Military Medical University, #169 Changle West Road, Xi’an, Shaanxi 710032 People’s Republic of China
| | - Jianning Zhang
- Department of Neurosurgery, General Navy Hospital of PLA, Beijing, 100048 People’s Republic of China
| | - Angang Yang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, #169 Changle West Road, Xi’an, Shaanxi 710032 People’s Republic of China
| | - Tao Wang
- Department of Medical Genetics and Developmental Biology, Fourth Military Medical University, #169 Changle West Road, Xi’an, Shaanxi 710032 People’s Republic of China
| |
Collapse
|
13
|
Chen X, Yang T, Wang W, Xi W, Zhang T, Li Q, Yang A, Wang T. Circular RNAs in immune responses and immune diseases. Am J Cancer Res 2019; 9:588-607. [PMID: 30809295 PMCID: PMC6376182 DOI: 10.7150/thno.29678] [Citation(s) in RCA: 174] [Impact Index Per Article: 34.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 12/13/2018] [Indexed: 02/06/2023] Open
Abstract
Circular RNAs (circRNAs) are novel clusters of endogenous noncoding RNAs (ncRNAs) that are widely expressed in eukaryotic cells. In contrast to the generation of linear RNA transcripts, circRNAs undergo a "back-splicing" process to form a continuous, covalently closed, stable loop structure without 5' or 3' polarities and poly (A) tails during posttranscriptional modification. Due to the widespread availability of several technologies, especially high-throughput RNA sequencing, numerous circRNAs have been discovered not only in mammals but also in plants and insects. Notably, due to their abilities to serve as microRNA (miRNA) "sponges", miRNA "reservoirs", regulate gene expression and encode proteins, circRNAs participate in the development and progression of different immune responses and immune diseases by enriching various forms of epigenetic modification. CircRNAs have been demonstrated to be expressed in a tissue-specific and pathogenesis-related manner during the occurrence of multiple immune diseases. Additionally, because of their circular configurations, expression in blood and peripheral tissues and coexistence with exosomes, circRNAs show inherent conservation along with environmental resistance stability and may be regarded as potential biomarkers or therapeutic targets for some immune diseases. In this review, we summarize the characteristics, functions and mechanisms of circRNAs and their involvement in immune responses and diseases. Although our knowledge of circRNAs remains preliminary, this field is worthy of deeper exploration and greater research efforts.
Collapse
|
14
|
Yu H, Feng G, Feng J, Zhou B, Xi W, Yan F, Wu B, Ying G, Zhang J, Chen H, Chen J. Abstract No. 526 A rabbit model of gastric cancer established by injecting VX2 tumor pieces through left gastric artery catheterization. J Vasc Interv Radiol 2018. [DOI: 10.1016/j.jvir.2018.01.571] [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] [Indexed: 11/30/2022] Open
|
15
|
Neelakantan P, Khan K, Li KY, Shetty H, Xi W. Effectiveness of supplementary irrigant agitation with the Finisher GF Brush on the debridement of oval root canals instrumented with the Gentlefile or nickel titanium rotary instruments. Int Endod J 2018; 51:800-807. [PMID: 29363136 DOI: 10.1111/iej.12892] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [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: 11/03/2017] [Accepted: 01/18/2018] [Indexed: 12/15/2022]
Abstract
AIM To examine the efficacy of a novel supplementary irrigant agitating brush (Finisher GF Brush, MedicNRG, Kibbutz Afikim, Israel) on the debridement of root canals prepared with a novel stainless steel rotary instrumentation system (Gentlefile; MedicNRG), or nickel titanium rotary instruments in oval root canals. METHODOLOGY Mandibular premolars (n = 72) were selected and divided randomly into three experimental groups (n = 24) after microCT scanning: group 1, canal preparation to rotary NiTi size 20, .04 taper (R20); group 2, rotary NiTi to size 25, .04 taper (R25) and group 3, Gentlefile size 23, .04 taper (GF). Specimens were subdivided into two subgroups: subgroup A, syringe-and-needle irrigation (SNI); subgroup B, Finisher GF Brush (GB). Ten untreated canals served as controls. Specimens were processed for histological evaluation, and the remaining pulp tissue (RPT) was measured. Data were analysed using Mann-Whitney and Kruskal-Wallis tests (P = 0.05). RESULTS All experimental groups had significantly less RPT than the control (P < 0.05). Group 3B (GF-GB) had significantly less RPT than groups 1B (R20-GB) and 2B (R25-GF; P < 0.05). When irrigated with SNI, there was no significant difference in the RPT between the three groups (P > 0.05). When instrumented with R20, there was no significant difference between SNI and GF (P < 0.05) whilst GB had significantly less RPT than SNI for R25 (P < 0.05). CONCLUSIONS Supplementary irrigant agitation with the Finisher GF Brush improved the debridement of canals prepared with Gentlefile and size 25, .04 taper rotary NiTi. Root canal debridement did not significantly differ between the instruments when syringe irrigation was used.
Collapse
Affiliation(s)
- P Neelakantan
- Discipline of Endodontology, Faculty of Dentistry, The University of Hong Kong, Hong Kong, Hong Kong SAR
| | - K Khan
- Discipline of Endodontology, Faculty of Dentistry, The University of Hong Kong, Hong Kong, Hong Kong SAR
| | - K Y Li
- Centralized Research Laboratories, Faculty of Dentistry, The University of Hong Kong, Hong Kong, Hong Kong SAR
| | - H Shetty
- Department of Conservative Dentistry and Endodontics, Nair Hospital Dental College, Mumbai, India
| | - W Xi
- Department of Operative Dentistry and Endodontics, Guanghua College of Stomatology, Sun Yat-sen University, Guangzhou, China
| |
Collapse
|
16
|
Wei M, Jiao D, Han D, Wu J, Wei F, Zheng G, Guo Z, Xi W, Yang F, Xie P, Zhang L, Yang AG, Wang H, Qin W, Wen W. Knockdown of RNF2 induces cell cycle arrest and apoptosis in prostate cancer cells through the upregulation of TXNIP. Oncotarget 2018; 8:5323-5338. [PMID: 28029659 PMCID: PMC5354911 DOI: 10.18632/oncotarget.14142] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [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: 06/03/2016] [Accepted: 11/22/2016] [Indexed: 01/02/2023] Open
Abstract
RNF2, also known as RING1b or RING2, is identified as the catalytic subunit of polycomb repressive complex 1 (PRC1), which mediates the mono-ubiquitination of histone H2A. RNF2 has been proved to have oncogenic function in many kinds of cancers, but the function of RNF2 in prostate cancer (PCa) has not been evaluated. Here we show that PCa tissues showed higher RNF2 expression than the benign prostatic hyperplasia (BPH) tissues. Knockdown of RNF2 in PCa cells resulted in cell cycle arrest, increased apoptosis and inhibited cell proliferation, and the growth of RNF2 knockdown PCa xenografts were obviously inhibited in nude mice. Gene microarray analysis was performed and tumor suppressor gene TXNIP was found to be significantly increased in RNF2 knockdown cells. Simultaneously knockdown of RNF2 and TXNIP can partially rescue the arrested cell cycle, increased apoptosis and inhibited cell proliferation in RNF2 single knockdown cells. Furthermore, ChIP assay result showed that RNF2 enriched at the TXNIP promoter, and the enrichment of RNF2 and ubiquitination of H2A in TXNIP promoter was obviously inhibited in RNF2 knockdown cells. In conclusion, our results demonstrate that RNF2 functions as an oncogene in PCa and RNF2 may regulate the progression of PCa through the inhibition of TXNIP.
Collapse
Affiliation(s)
- Ming Wei
- Department of Urology, Tangdu Hospital, Fourth Military Medical University, 710038 Xi'an, China
| | - Dian Jiao
- Department of Urology, Tangdu Hospital, Fourth Military Medical University, 710038 Xi'an, China
| | - Donghui Han
- Department of Urology, Xijing Hospital, Fourth Military Medical University, 710032 Xi'an, China
| | - Jieheng Wu
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, 710032 Xi'an, China
| | - Feilong Wei
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, 710032 Xi'an, China
| | - Guoxu Zheng
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, 710032 Xi'an, China
| | - Zhangyan Guo
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, 710032 Xi'an, China
| | - Wenjin Xi
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, 710032 Xi'an, China
| | - Fa Yang
- Department of Urology, Xijing Hospital, Fourth Military Medical University, 710032 Xi'an, China
| | - Pin Xie
- Department of Urology, Xijing Hospital, Fourth Military Medical University, 710032 Xi'an, China
| | - Lingling Zhang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, 710032 Xi'an, China
| | - An-Gang Yang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, 710032 Xi'an, China
| | - He Wang
- Department of Urology, Tangdu Hospital, Fourth Military Medical University, 710038 Xi'an, China
| | - Weijun Qin
- Department of Urology, Xijing Hospital, Fourth Military Medical University, 710032 Xi'an, China
| | - Weihong Wen
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, 710032 Xi'an, China
| |
Collapse
|
17
|
Xi W, Chen X, Sun J, Wang W, Huo Y, Zheng G, Wu J, Li Y, Yang A, Wang T. Combined Treatment with Valproic Acid and 5-Aza-2'-Deoxycytidine Synergistically Inhibits Human Clear Cell Renal Cell Carcinoma Growth and Migration. Med Sci Monit 2018; 24:1034-1043. [PMID: 29457966 PMCID: PMC5827631 DOI: 10.12659/msm.906020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [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] [Indexed: 12/31/2022] Open
Abstract
Background Histone acetylation and DNA methylation are important mammalian epigenetic modifications that participate in the regulation of gene expression. Because dysregulation of histone deacetylase and DNA methyltransferases are hallmarks of malignancy, they have become promising therapeutic targets. In this study, we explored the anti-tumor activity of valproic acid (VPA), a histone deacetylase inhibitor (HDACi) and 5-Aza-2′-deoxycytidine (5-Aza), an inhibitor of DNA methyltransferases, on renal cell carcinoma (RCC) cell lines 786-O and 769-P. Material/Methods The cell proliferation was detected by xCELLigence RTCA DP Instrument, viability by CCK8 assay, cell apoptosis and cell cycle by flow cytometry, and cell migration by wound healing assay, Transwell assay and xCELLigence RTCA DP Instrument. Results We discovered that VPA and 5-Aza could individually induce decreased viability and have an inhibitory effect on the proliferation of 786-O and 769-P cells. This anti-growth effect was more pronounced when the cells were treated with both VPA and 5-Aza. The combination of VPA and 5-Aza also elicited more apoptosis and produced more cell cycle arrest in the G1 phase for both cell lines. On the other hand, treatment of RCC cells with VPA, 5-Aza, or a combination of both resulted in slow wound healing and impaired migration. Conclusions These findings clearly demonstrated that VPA combined with 5-Aza could significantly increase anti-RCC effects by inhibiting cellular proliferation, inducing apoptosis, promoting cell cycle arrest and prohibiting the migration of human RCC cells.
Collapse
Affiliation(s)
- Wenjin Xi
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, China (mainland)
| | - Xu Chen
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, China (mainland)
| | - Jinbo Sun
- Department of Urology, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China (mainland)
| | - Wei Wang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, China (mainland)
| | - Yi Huo
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, China (mainland)
| | - Guoxu Zheng
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, China (mainland)
| | - Jieheng Wu
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, China (mainland)
| | - Yufang Li
- Nuclear Medicine Diagnostic Center, Shaanxi Provincial Peple's Hospital, Xi'an, Shaanxi, China (mainland)
| | - Angang Yang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi, China (mainland)
| | - Tao Wang
- Department of Medical Genetics and Developmental Biology, Fourth Military Medical University, Xi'an, Shaanxi, China (mainland)
| |
Collapse
|
18
|
Du X, Cai Y, Xi W, Zhang R, Jia L, Yang A, Zhao J, Yan B. Multi‑target inhibition by four tandem shRNAs embedded in homo‑ or hetero‑miRNA backbones. Mol Med Rep 2017; 17:307-314. [PMID: 29115602 DOI: 10.3892/mmr.2017.7854] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 10/02/2017] [Indexed: 11/06/2022] Open
Abstract
The functional influence of microRNA (miRNA)backbone selection remains unclear with respect to multiplexing miRNA‑based short hairpin RNAs (shRNAmiRs), due to a lack of comparative studies. To this end, a pair of shRNAmiR tetramers were designed in the present study that targeted four genes with a shared miR30a backbone (homo‑BB) or four miRNA backbones (hetero‑BB). A PBLT+ 293A cell line overexpressing four targets was established, which permitted simultaneous dissection of individual gene knockdown. Multi‑target inhibition was confirmed by a decrease in positive cell populations of the relative gene and mean fluorescence intensities, with almost comparable activities of homo‑ and hetero‑BB tetramers. Of note, this multi‑inhibition was sustained over a 1‑month period, with no notable difference, particularly in the late‑phased inhibitory effects between homo‑ and hetero‑BB tetra‑shRNA miRs. These preliminary data may indicate little influence of scaffold substitution in the functionalities of multiplexed shRNAmiRs and little recombination‑depleted risk of repetitively adopting the same miRNA backbone in this artificial in vitro system. More comparative studies are further required to explore extended repertoires of scaffold‑paralleled multi‑shRNAmiRs in more physiologically relevant models.
Collapse
Affiliation(s)
- Xiao Du
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Yanhui Cai
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Wenjin Xi
- Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Rui Zhang
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Lintao Jia
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Angang Yang
- Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Jing Zhao
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Bo Yan
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| |
Collapse
|
19
|
Tang Y, Shi W, Sun X, Xi W. Endoscopic ultrasound in diagnosis of esophageal tuberculosis: 10-year experience at a tertiary care center. Dis Esophagus 2017; 30:1-6. [PMID: 28575247 DOI: 10.1093/dote/dox031] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Indexed: 12/11/2022]
Abstract
Definite diagnosis of esophageal tuberculosis (ET) requires isolation of tubercle bacilli, which is challenging in clinical practice. Difficulty in differentiating ET from other esophageal diseases may well result in a delay in diagnosis. The literature on utility of endoscopic ultrasound (EUS) in diagnosis of ET is insufficient. This study aims to evaluate the role of EUS morphology combined with EUS-guided tissue acquisition in the diagnosis of ET. Data of the 35 patients diagnosed with ET from January 2006 to October 2015 were retrospectively analyzed. After miniprobe and linear echoendoscopic visualization, either linear EUS-guided deep biopsy or EUS-guided fine needle aspiration was performed for tissue acquisition. Histocytopathological results showing caseous necrosis or acid fast bacilli (AFB) or epithelioid granuloma were considered diagnostic. Esophageal wall thickening or mass formation with disruption of the adventitia due to infiltration by adjacent mediastinal lymphadenopathy was typically observed under EUS. Tissue acquisition revealed epithelioid granuloma in 33 patients, caseous necrosis in 13, a positive AFB stain in 14, and nonspecific chronic inflammation in 2. Of the 35 patients, 33 (94.3%) with both characteristic EUS morphology and diagnostic histocytopathology were considered to have an EUS established diagnosis. The remaining two with only nonspecific chronic inflammation received empirical antitubercular chemotherapy based solely on EUS morphology. The two-year follow-up confirmed diagnosis of ET in all patients. While the final diagnosis of ET was based upon two-year follow-up of treatment response to antitubercular medication in addition to caseous necrosis/granuloma/positive-AFB stain revealed by EUS-guided tissue acquisition, an EUS-established diagnosis of ET and medical treatment with long-term follow-up is rational and practical compared with surgery or untreated follow-up.
Collapse
Affiliation(s)
- Y Tang
- Department of Gastroenterology, The Third People's Hospital of Chengdu, Chengdu, China
| | - W Shi
- Department of Gastroenterology, The Third People's Hospital of Chengdu, Chengdu, China
| | - X Sun
- Department of Gastroenterology, The Third People's Hospital of Chengdu, Chengdu, China
| | - W Xi
- Department of Gastroenterology, The Third People's Hospital of Chengdu, Chengdu, China
| |
Collapse
|
20
|
Zheng G, Li W, Zuo B, Guo Z, Xi W, Wei M, Chen P, Wen W, Yang AG. High expression of CREPT promotes tumor growth and is correlated with poor prognosis in colorectal cancer. Biochem Biophys Res Commun 2016; 480:436-442. [PMID: 27773816 DOI: 10.1016/j.bbrc.2016.10.067] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [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: 10/09/2016] [Accepted: 10/19/2016] [Indexed: 12/29/2022]
Abstract
CREPT (cell cycle-related and expression elevated protein in tumor) is highly expressed in many kinds of cancer, and has been shown to be prognostic in certain cancers. However, the clinical significance of CREPT in colorectal cancer (CRC) has not been sufficiently investigated. In this study, we examined the CREPT expression in 225 clinical CRC tissues and paired adjacent normal tissues, and analyzed the correlation between CREPT expression and other clinicopathological features. We also evaluated the biological function of CREPT both in vitro and in vivo using knockdown or overexpressing CRC cells. Our results showed that CREPT expressed in 175 of 225 (77.8%) CRC patients and the CREPT expression was significantly associated with tumor differentiation (P = 0.000), Dukes' stages (P = 0.013) and metastasis (P = 0.038). Patients with high CREPT expression tended to have shorter survival time. Multivariate analysis showed that positive CREPT expression can be used as an independent predictor for CRC prognosis. CREPT knockdown cells showed inhibited cell proliferation and arrested cell cycle, while CREPT overexpressing cells showed increased proliferation and promoted cell cycle. In addition, CREPT overexpression significantly promoted tumor growth in vivo. Mechanism study showed that CREPT may regulate cell proliferation and cell cycle through the regulation on cyclin D3, CDK4 and CDK6.
Collapse
Affiliation(s)
- Guoxu Zheng
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, 710032, China
| | - Weimiao Li
- Department of Respiration, Tangdu Hospital, Fourth Military Medical University, Xi'an, 710038, China
| | - Baile Zuo
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, 710032, China
| | - Zhangyan Guo
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, 710032, China
| | - Wenjin Xi
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, 710032, China
| | - Ming Wei
- Department of Urology, Tangdu Hospital, Fourth Military Medical University, Xi'an, 710038, China
| | - Peng Chen
- Department of Thoracic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, 710038, China
| | - Weihong Wen
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, 710032, China.
| | - An-Gang Yang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, 710032, China.
| |
Collapse
|
21
|
Zheng J, Qin W, Jiao D, Ren J, Wei M, Shi S, Xi W, Wang H, Yang AG, Huan Y, Wen W. Knockdown of COUP-TFII inhibits cell proliferation and induces apoptosis through upregulating BRCA1 in renal cell carcinoma cells. Int J Cancer 2016; 139:1574-85. [PMID: 27193872 DOI: 10.1002/ijc.30193] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2015] [Accepted: 04/25/2016] [Indexed: 12/30/2022]
Affiliation(s)
- Jia Zheng
- Department of Urology; Tangdu Hospital, Fourth Military Medical University; Xi'an China
- Department of Oncology; the First Affiliated Hospital of Zhengzhou University; Zhengzhou China
| | - Weijun Qin
- Department of Urology; Xijing Hospital, Fourth Military Medical University; Xi'an China
| | - Dian Jiao
- Department of Urology; Tangdu Hospital, Fourth Military Medical University; Xi'an China
| | - Jing Ren
- Department of Radiology; Xijing Hospital, Fourth Military Medical University; Xi'an China
| | - Ming Wei
- Department of Urology; Tangdu Hospital, Fourth Military Medical University; Xi'an China
| | - Shengjia Shi
- State Key Laboratory of Cancer Biology, Department of Immunology; Fourth Military Medical University; Xi'an China
| | - Wenjin Xi
- State Key Laboratory of Cancer Biology, Department of Immunology; Fourth Military Medical University; Xi'an China
| | - He Wang
- Department of Urology; Tangdu Hospital, Fourth Military Medical University; Xi'an China
| | - An-Gang Yang
- State Key Laboratory of Cancer Biology, Department of Immunology; Fourth Military Medical University; Xi'an China
| | - Yi Huan
- Department of Radiology; Xijing Hospital, Fourth Military Medical University; Xi'an China
| | - Weihong Wen
- State Key Laboratory of Cancer Biology, Department of Immunology; Fourth Military Medical University; Xi'an China
| |
Collapse
|
22
|
Wu J, Han D, Wei M, Zheng G, Jiao D, Xi W, Yang A, Qin W, Wen W. [Domestication of suspension CHO cells and its application in the expression of anti-PSMA antibody]. Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi 2016; 32:1-4. [PMID: 27358992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To domesticate adherent Chinese hamster ovary (CHO) cells into suspension CHO cells (CHO-S) cultured in serum-free medium,and evaluate the application of the CHO-S cells in antibody expression. METHODS Adherent CHO cells were domesticated into CHO-S cells through suspension culture and gradually decreasing the serum concentration, and eventually the cells were cultured in serum-free medium. Based on the anti-prostate-specific membrane antigen ( PSMA) single chain antibody fragment ( Sc Fv) gene sequence obtained from a phage display library, the genes of heavy and light chains were designed, synthesized and cloned into the pc DNA3. 1 vector,and the products were named pc DNA3. 1-HC and pc DNA3. 1-LC respectively. The plasmids were transiently transfected at the ratio of light and heavy chain 3 ∶ 1 into CHO-S cells using Free Style MAX transfection reagent, and the supernatants were harvested at day 7 after transfection. SDS-PAGE and Western blotting were used to detect the antibody expression,and flow cytometry was applied to evaluate its binding activity to PSMA positive cells. RESULTS The adherent CHO cells were successfully domesticated into CHO-S cells. Expression plasmids for anti-PSMA antibody heavy chain and light chain were successfully constructed,and anti-PSMA antibody could be secretively expressed in CHO-S cells. Flow cytometry showed that the expressed antibody could specifically bind to PSMA positive cells. CONCLUSION CHO-S cel s were successful y domesticated from adherent CHO cells, and could be used for antibody expression. This study provided a useful tool for further antibody expression, purification and function study.
Collapse
|
23
|
Gao J, Zhao P, Chen X, Wang W, Li Y, Xi W, Zhang W, Hu P, Wang T, Shan L. [miR-365 inhibits proliferation and promotes apoptosis of SOSP9607 osteosarcoma cells]. Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi 2016; 32:44-48. [PMID: 26728377] [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: 06/05/2023]
Abstract
OBJECTIVE To investigate the effect of miR-365 on the proliferation and apoptosis in SOSP-9607 osteosarcoma cells. METHODS SOSP-9607 cells were transiently transfected with miR-365 mimic or miR-365 inhibitor which were artificially synthesized. The expression of miR-365 was detected by real-time PCR (qRT-PCR); the cell cycle and apoptosis was analyzed by flow cytometry; the cell proliferation was observed by MTT assay; and the level of KRAS was determined by qRT-PCR and Western blotting. RESULTS miR-365 mimic up-regulated the expression level of miR-365 in SOSP-9607 osteosarcoma cells. After miR-365 mimic transfection, the proliferation of SOSP-9607 cells was inhibited; the cell cycle was arrested in G1 phase; the apoptosis rate increased and the expression of KRAS was reduced in miR-365 mimic transfected cells. On the contrary, when miR-365 inhibitor was transfected into SOSP-9607 cells, the expression level of miR-365 was significantly reduced along with promoted cell proliferation, suppressed cell apoptosis and increased KRAS expression. CONCLUSION miR-365 could inhibit the proliferation and promote the apoptosis in SOSP-9607 osteosarcoma cells probably by mediating the expression of KRAS.
Collapse
Affiliation(s)
- Jinjian Gao
- Department of Orthopaedics, Tangdu Hospital, Fourth Military Medical University, Xi'an 710038, China
| | - Pin Zhao
- Department of Anesthesiology, Tangdu Hospital, Fourth Military Medical University, Xi'an 710038, China
| | - Xu Chen
- Department of Immunology, School of Basic Medicine, Fourth Military Medical University, Xi'an 710032, China
| | - Wei Wang
- Department of Immunology, School of Basic Medicine, Fourth Military Medical University, Xi'an 710032, China
| | - Yufang Li
- Department of Immunology, School of Basic Medicine, Fourth Military Medical University, Xi'an 710032, China
| | - Wenjin Xi
- Department of Immunology, School of Basic Medicine, Fourth Military Medical University, Xi'an 710032, China
| | - Wei Zhang
- Department of neurosurgery, Tangdu Hospital, Fourth Military Medical University, Xi'an 710038, China
| | - Pingping Hu
- Department of Digestive Diseases, Navy General Hospital, Beijing 100037, China
| | - Tao Wang
- Department of Immunology, School of Basic Medicine, Fourth Military Medical University, Xi'an 710032, China. *Corresponding author, E-mail:
| | - Lequn Shan
- Department of Orthopaedics, Tangdu Hospital, Fourth Military Medical University, Xi'an 710038, China. *Corresponding author, E-mail:
| |
Collapse
|
24
|
Song L, Kang H, Liu D, Dai Z, He J, Wang B, Zhao Y, Wang X, Xi W. Dimedone Derivative {2-[(4-Hydroxy-phenylamino)- methylene]-5,5-dimethyl-cyclohexane-1,3-dione} Plays an Important Role in Breast Cancer Treatment. TROP J PHARM RES 2015. [DOI: 10.4314/tjpr.v14i9.25] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Purpose: To investigate the effect of 2-[(4-hydroxy-phenylamino)-methylene]-5,5-dimethyl-cyclohex (HPDH) on mammary carcinogenesis induced by 7,12-dimethylbenz(a)anthracene in female Sprague Dawley rats.Methods: Among three groups of rats (50 each) used in the study, the control group was fed standard diet alone, ibuprofen group received standard diet containing 1200 mg/kg ibuprofen while HPDH group was administered standard diet containing 1200 mg/kg HPDH. The treatment was for 10 days for all the groups. All the animals received 20 mg of DMBA intragastrically by gavage. Clinical parameters for the rats were recorded weekly. Micrometer caliper was used to measure the diameter of all the tumors at the end of the experiment and tumor volume calculated. Histological evaluation was performed using hematoxylin and eosin (H&E) staining. High performance liquid chromatography (HPLC) was used to determine the level of HPDH and ibuprofen in the serum of the animals.Results: The data revealed a significant decrease in the number of rats with mammary tumor, number of tumors/rat and tumor volume by 54, 72 and 75 %, respectively, in HPDH group compared to control group. The ibuprofen- treated rats also showed significant decrease in the number of rats with tumor, number of tumors/rat and tumor volume by 43, 55, and 59 %, respectively. Treatment of rats with HPDH increased the latency period of tumor induction significantly (p < 0.005). Median detection period (50 % of tumors) was 92, 83 and 56 days, respectively, in HPDH, ibuprofen and control groups, respectively, after DMBA induction.Conclusion: These results demonstrate that HPDH possesses strong chemopreventive activity against mammary carcinogenesis.Keywords: Carcinogenesis, Mammary tumor, Median detection period, Tumor, Latency period, Chemopreventive activity, Ibuprofen
Collapse
|
25
|
Wang L, Xi W, Zheng G, Zhou C, Jin G, He C, Cai M, Zhu Q. [Expression and clinical significance of PTPN14 in cholangiocarcinoma]. Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi 2015; 31:1251-1254. [PMID: 26359106] [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: 06/05/2023]
Abstract
OBJECTIVE To investigate the expression level of protein tyrosine phosphatase non-receptor type 14 (PTPN14), and analyze the relationship between PTPN14 and clinical pathological features and prognosis of patients with cholangiocarcinoma. METHODS Expression of PTPN14 protein was detected by immunohistochemistry (IHC) in 57 cholangiocarcinoma tissues and corresponding adjacent normal tissues. The relationship between PTPN14 protein level and the clinical-pathological features of cholangiocarcinoma was analyzed using IBM SPSS 20.0 statistical software. The relationship between PTPN14 protein expression and 5-year overall survival of cholangiocarcinoma patients was investigated by survival curves. RESULTS IHC revealed that positive rates of PTPN14 protein were 49.1% and 75.4% in cholangiocarcinoma tissues and adjacent tissues, respectively. The expression of PTPN14 protein was significantly associated with TNM I, II, and differentiation degree of cholangiocarcinoma patients, but not significantly associated with age and gender of cholangiocarcinoma patients. The 5-year overall survival rate was higher in the PTPN14-positive patients than the PTPN14-negative ones. CONCLUSION PTPN14 was down-regulated in cholangiocarcinoma, and negatively correlated with better clinical-pathological features and 5-year overall survival rate of cholangiocarcinoma.
Collapse
Affiliation(s)
- Lijuan Wang
- Department of Oncology, First Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710061, China
| | - Wenjin Xi
- Department of Immunology, School of Basic Medicine, Fourth Military Medical University, Xi'an 710032, China
| | - Guoxu Zheng
- Department of Immunology, School of Basic Medicine, Fourth Military Medical University, Xi'an 710032, China
| | - Congya Zhou
- Department of Oncology, First Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710061, China
| | - Guihua Jin
- Department of Oncology, First Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710061, China
| | - Chenchen He
- Department of Oncology, First Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710061, China
| | - Mengjiao Cai
- Department of Oncology, First Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710061, China
| | - Qing Zhu
- Department of Oncology, First Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710061, China
| |
Collapse
|
26
|
Affiliation(s)
- J Chen
- Department of Radiology, Jiangsu Cancer Hospital & Cancer Hospital of Nanjing Medical University (NMU), 42, Baiziting, Nanjing 210009, China
| | - J Zhang
- Department of Pathology, Jiangsu Cancer Hospital & Cancer Hospital of Nanjing Medical University (NMU), Nanjing 210009, China
| | - J D Dowell
- Division of Interventional Radiology, Department of Radiology, Wexner Medical Center, The Ohio State University, Columbus, Ohio 43210, USA
| | - W Xi
- Department of Radiology, Jiangsu Cancer Hospital & Cancer Hospital of Nanjing Medical University (NMU), 42, Baiziting, Nanjing 210009, China
| | - X Zhang
- Department of Radiology, Jiangsu Cancer Hospital & Cancer Hospital of Nanjing Medical University (NMU), 42, Baiziting, Nanjing 210009, China
| | - S Chen
- Department of Radiology, Jiangsu Cancer Hospital & Cancer Hospital of Nanjing Medical University (NMU), 42, Baiziting, Nanjing 210009, China.
| |
Collapse
|
27
|
Zhou C, Yang F, Xi W, Wei M, Zheng G, Wang W, Yang A, Zhang J, Wen W. [Effect of RNF2 knockdown on apoptosis and radiosensitivity in glioma U87 cells]. Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi 2014; 30:471-475. [PMID: 24796740] [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: 06/03/2023]
Abstract
OBJECTIVE To investigate the effect of RING finger protein 2 (RNF2) knockdown on the biological characteristics and radiosensitivity in glioma U87 cells. METHODS Plasmids containing shRNA targeting RNF2 were transfected into U87 cells. Real-time quantitative PCR (qRT-PCR) and Western blotting were respectively applied to detect the mRNA and protein level of RNF2. MTT assay was used to detect cell proliferation. Cell cycle and apoptosis were measured by flow cytometry combined with annexin V-FITC/PI staining in the control and RNF2 knockdown cells. Apoptosis was also detected after X-ray radiation. RESULTS Both shRNAs efficiently inhibited RNF2 expression in U87 cells. Cell proliferation was obviously depressed in RNF2 knockdown cells. The percentage of cells decreased in S phase (shRNA-NC: 27.31 ± 1.35; shRNF2-1: 16.72 ± 2.90; shRNF2-3: 10.35 ± 1.33) and increased in G1 phase (shRNA-NC: 56.13 ± 1.80; shRNF2-1: 76.32 ± 3.11; shRNF2-3: 80.45 ± 2.83). More cell apoptosis was observed in RNF2 knockdown cells. After X ray radiation, the apoptosis rate was significantly raised in RNF2 knockdown cells (shRNA-NC: 20.88 ± 0.64; shRNF2-1: 39.69 ± 0.57; shRNF2-3: 47.82 ± 0.45). CONCLUSION Knockdown of RNF2 can inhibit cell proliferation, induce cell cycle arrest and promote apoptosis in U87 cells. RNF2 knockdown can obviously increase the sensitivity of U87 cells to X ray radiation.
Collapse
Affiliation(s)
- Chunhui Zhou
- Department of Neurosurgery, Navy General Hospital, Beijing 100037; Graduate School, Second Military Medical University, Shanghai 200433, China
| | - Fan Yang
- Department of Immunology, School of Basic Medicine, Fourth Military Medical University, Xi'an 710032, China
| | - Wenjin Xi
- Department of Immunology, School of Basic Medicine, Fourth Military Medical University, Xi'an 710032, China
| | - Ming Wei
- Department of Urology, Fourth Military Medical University, Xi'an 710032, China
| | - Guoxu Zheng
- Department of Immunology, School of Basic Medicine, Fourth Military Medical University, Xi'an 710032, China
| | - Wei Wang
- Department of Immunology, School of Basic Medicine, Fourth Military Medical University, Xi'an 710032, China
| | - Angang Yang
- Department of Immunology, School of Basic Medicine, Fourth Military Medical University, Xi'an 710032, China
| | - Jianning Zhang
- Department of Neurosurgery, Navy General Hospital, Beijing 100037; Graduate School, Second Military Medical University, Shanghai 200433, China
| | - Weihong Wen
- Department of Immunology, School of Basic Medicine, Fourth Military Medical University, Xi'an 710032, China
| |
Collapse
|
28
|
Yang F, Wang W, Yuan L, Zhou C, Xi W, Wei M, Zheng G, Yang A, Zhang J, Wang T. [Overexpressed microRNA-93 inhibits the proliferation and promotes apoptosis of A172 glioma cells]. Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi 2014; 30:342-345. [PMID: 24721397] [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: 06/03/2023]
Abstract
OBJECTIVE To investigate the impact of microRNA-93 on the biological behaviors of A172 glioma cells by observing the changes of cell proliferation, cell cycle and apoptosis. METHODS Real-time quantitative PCR (qRT-PCR) was applied to detect the expression of microRNA-93 in 2 samples of human normal brain tissues, 10 samples of glioma tissues and 5 glioma cell lines. Artificially synthesized microRNA-93 mimic was transiently transfected into A172 glioma cells, and then the expression of microRNA-93 was tested by qRT-PCR. MTT assay was used to detect the cell proliferation of A172 glioma cells; apoptosis and cell cycle of A172 glioma cells were measured by flow cytometry. RESULTS MicroRNA-93 was over-expressed in glioma tissues and glioma cell lines as compared with normal samples. The transient transfection of microRNA-93 mimic into A172 glioma cells significantly increased the expression of microRNA-93 in A172 glioma cells, promoted cell proliferation, raised the cell proportion in S phase, reduced the cell proportion in G1 phase, and inhibited cell apoptosis. CONCLUSION MicroRNA-93 was aberrantly over-expressed in glioma tissues and cell lines. Transient transfection of microRNA-93 mimic led to increased proliferation, G1-to-S cell cycle progression and reduced apoptosis in A172 glioma cells, indicating that micro-RNA-93 might be a new target for the diagnosis and treatment of glioma.
Collapse
Affiliation(s)
- Fan Yang
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Wei Wang
- Department of Immunology, School of Basic Medicine, Fourth Military Medical University, Xi'an 710032, China
| | - Lu Yuan
- Department of Immunology and Pathogenic Biology, School of Medicine, Xi'an Jiaotong University, Xi'an 710061, China
| | - Chunhui Zhou
- Department of Neurosurgery, Navy General Hospital, Beijing 100037, China
| | - Wenjin Xi
- Department of Immunology, School of Basic Medicine, Fourth Military Medical University, Xi'an 710032, China
| | - Ming Wei
- Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Guoxu Zheng
- Department of Immunology, School of Basic Medicine, Fourth Military Medical University, Xi'an 710032, China
| | - Angang Yang
- Department of Immunology, School of Basic Medicine, Fourth Military Medical University, Xi'an 710032, China
| | - Jianning Zhang
- Department of Neurosurgery, Navy General Hospital, Beijing 100037, China
| | - Tao Wang
- Department of Immunology, School of Basic Medicine, Fourth Military Medical University, Xi'an 710032, China
| |
Collapse
|
29
|
Shi J, Xi W, Yi C, Wang Z, Guo S, Han Y. [Vacuum sealing drainage promotes experimental pig explosive abdomen wound healing]. Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi 2014; 30:312-315. [PMID: 24606754] [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: 06/03/2023]
Abstract
OBJECTIVE To explore the roles of vacuum sealing drainage (VSD) in controlling infection and promoting healing on the experimental pigs with blast injury in the abdomen and exposed internal organs. METHODS All animals with full-thickness abdominal wall defect were randomly divided into experimental group (VSD group) and control group (saline gauze group). Debridement was performed 6 hours after wounding. VSD devices (-125 mmHg) were imbedded on animals in the experimental group, while in the control group gauzes with saline solution were used to cover the wound and conventional treatment of dressing change was done. Specimens of muscle tissue in the wound were collected respectively from the two groups to make bacteria quantification 6 hours before the treatment and on the 1st, 3rd, 5th, and 7th day of treatment. Specimens of abdominal drainage fluid were collected respectively on the 1st, 3rd, 5th, and 7th day of treatment to detect inflammatory cytokines (TNF-α, IL-1, IL-6) using ELISA kit. Specimens of the skin and muscle tissues were collected respectively from the two groups on the 7th day to detect target genes (VEGF, bFGF, EGF, and MMP-9) using qRT-PCR. RESULTS The bacteria counts (CFU/g) in the VSD group on the 1st, 3rd, 5th, and 7th day of treatment were significantly less than those in the control group at the corresponding time points, and the differences between the two groups were statistically significant (P<0.01). There were no distinct differences between the two groups in the expressions of TNF-α, IL-1 and IL-6 in the abdominal drainage fluid of pig on the 1st day of treatment. The expressions of TNF-α, IL-1 and IL-6 on the 3rd, 5th, and 7th day of treatment in the VSD group were significantly lower than those in the control group at the corresponding time points (P<0.01). The expressions of VEGF, EGF and bFGF in the skin and soft tissues in the VSD group on the 7th day was higher than those in the control group (P<0.01), while the expression of MMP-9 showed no statistical significant difference between the two groups (P>0.05). CONCLUSION VSD can effectively control the amount of bacteria in the wound, and reduce the expressions of pro-inflammatory factors such as TNF-α, IL-1 and IL-6 in drainage fluid. VSD also promotes the expressions of growth factors in the wound.
Collapse
Affiliation(s)
- Junli Shi
- PLA Institute of Plastic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Wenjin Xi
- Department of Immunology, School of Basic Medicine, Fourth Military Medical University, Xi'an 710032, China
| | - Chenggang Yi
- PLA Institute of Plastic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Zhijun Wang
- Xinhua Hospital Affiliated to Dalian University, Dalian 116021, China
| | - Shuzhong Guo
- PLA Institute of Plastic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Yan Han
- Department of Plastic Repair, General Hospital of PLA, Beijing 100853, China
| |
Collapse
|
30
|
Huangfu L, Wang X, Guo Z, Xi W, Shi S, Yang F, Chen X, Yang A, Zhang J, Wen W. [Preparation and knockdown efficiency evaluation of shRNA expressing lentiviral vector targeting B7-H1]. Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi 2013; 29:242-245. [PMID: 23643078] [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: 06/02/2023]
Abstract
OBJECTIVE To design and package shRNA expressing lentiviral particles targeting B7-H1, and evaluate their inhibitory effect on B7-H1 expression in U251 cells. METHODS Three shRNAs targeting B7-H1 was designed and the sense and antisense primers were produced by chemical synthesis. After annealing, they were linked into restriction enzyme digested pLKO.1 vector. Confirmed by DNA sequencing, the lentiviral particles were packaged and applied to infect U251 cells. qRT-PCR and Western blotting were used to detect the B7-H1 mRNA and protein levels respectively. RESULTS qRT-PCR and Western blotting showed that two of the three shRNAs effectively knocked-down B7-H1 expression in U251 cells. CONCLUSION The packaged lentiviral particles can specifically inhibit B7-H1 expression, which will be helpful for further functional study on B7-H1.
Collapse
Affiliation(s)
- Luokai Huangfu
- Department of Neurosurgery, Fourth Military Medical University, Xi'an, China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
31
|
Zhang G, Zhang W, Lou Y, Xi W, Cui J, Geng M, Zhu F, Chen YH, Liu S. TIPE2 deficiency accelerates neointima formation by downregulating smooth muscle cell differentiation. Cell Cycle 2013; 12:501-10. [PMID: 23324338 PMCID: PMC3587451 DOI: 10.4161/cc.23325] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Phenotypic switching of vascular smooth muscle cells (VSMCs) is known to play a key role in the development of atherosclerosis. However, the mechanisms that mediate VSMC phenotypic switching are unclear. We report here that TIPE2, the tumor necrosis factor (TNF) α-induced protein 8-like 2 (TNFAIP8L2), plays an atheroprotective role by regulating phenotypic switching of VSMCs in response to oxidized low-density lipoprotein (ox-LDL) stimuli. TIPE2-deficient VSMCs treated with ox-LDL expressed lower levels of contractile proteins such as SMαA, SM-MHC and calponin, whereas the proliferation, migration and the synthetic capacity for growth factors and cytokines were increased remarkably. Furthermore, TIPE2 inhibited VSMCs proliferation by preventing G 1/S phase transition. Interestingly, these effects of TIPE2 on VSMCs were dependent on P38 and ERK1/2 kinase signals. As a result, neointima formation was accelerated in the carotid arteries of TIPE2-deficient mice. These results indicate that TIPE2 is a potential inhibitor of atherosclerosis.
Collapse
Affiliation(s)
- Guizhong Zhang
- Institute of Immunology; Shandong University School of Medicine; Ji’nan, China
| | - Wenqian Zhang
- Institute of Immunology; Shandong University School of Medicine; Ji’nan, China
| | - Yunwei Lou
- Institute of Immunology; Shandong University School of Medicine; Ji’nan, China
| | - Wenjin Xi
- Department of Immunology; Fourth Military Medical University; Xi’an, China
| | - Jian Cui
- Institute of Immunology; Shandong University School of Medicine; Ji’nan, China
| | - Minghong Geng
- Institute of Immunology; Shandong University School of Medicine; Ji’nan, China
| | - Faliang Zhu
- Institute of Immunology; Shandong University School of Medicine; Ji’nan, China
| | - Youhai H. Chen
- Department of Pathology and Laboratory Medicine; University of Pennsylvania; Philadelphia, PA USA
| | - Suxia Liu
- Institute of Immunology; Shandong University School of Medicine; Ji’nan, China
- Key Laboratory of Cardiovascular Remodeling and Function Research; Chinese Ministry of Education and Chinese Ministry of Health; Shandong University Qilu Hospital; Jinan, China
| |
Collapse
|
32
|
Feng C, Cong-Xin H, Hong J, Teng W, Yan-Hong T, Xi W. Changes of swelling-activated chloride channels in atrial myocardium of rabbits with heart failure. Heart 2011. [DOI: 10.1136/heartjnl-2011-300867.101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
33
|
Ke-Chun W, Xi W, Dong-Ying Z, Shu Q, Yu-Jing W, Guang-Lei C, Wen-Yi H, Ying Z. A study on risk factors of coronary artery disease in Chong Qing city. Heart 2011. [DOI: 10.1136/heartjnl-2011-300867.301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
34
|
Xi W, Hu Y, Liu Y, Zhang J, Wang L, Lou Y, Qu Z, Cui J, Zhang G, Liang X, Ma C, Gao C, Chen Y, Liu S. Roles of TIPE2 in hepatitis B virus-induced hepatic inflammation in humans and mice. Mol Immunol 2011; 48:1203-8. [DOI: 10.1016/j.molimm.2011.03.002] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2011] [Revised: 03/01/2011] [Accepted: 03/01/2011] [Indexed: 01/01/2023]
|
35
|
Xi W, Harwood L, Diamant MJ, Brown JB, Gallo K, Sontrop JM, MacNab JJ, Moist LM. Patient attitudes towards the arteriovenous fistula: a qualitative study on vascular access decision making. Nephrol Dial Transplant 2011; 26:3302-8. [DOI: 10.1093/ndt/gfr055] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
36
|
Feng C, Cong-Xin H, Hong J, Yan-Hong T, Xi W, Teng W. e0058 Changes of transient receptor potential channels in atrial myocardium of rabbits with heart failure. Heart 2010. [DOI: 10.1136/hrt.2010.208967.58] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
37
|
Zhang G, Hao C, Lou Y, Xi W, Wang X, Wang Y, Qu Z, Guo C, Chen Y, Zhang Y. Tissue-specific expression of TIPE2 provides insights into its function. Mol Immunol 2010; 47:2435-42. [DOI: 10.1016/j.molimm.2010.06.016] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2010] [Revised: 06/28/2010] [Accepted: 06/29/2010] [Indexed: 10/19/2022]
|
38
|
Gonzalez RJ, Brauner CJ, Wang YX, Richards JG, Patrick ML, Xi W, Matey V, Val AL. Impact of ontogenetic changes in branchial morphology on gill function in Arapaima gigas. Physiol Biochem Zool 2010; 83:322-32. [PMID: 20100089 DOI: 10.1086/648568] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Soon after hatching, the osteoglossid fish Arapaima gigas undergoes a rapid transition from a water breather to an obligate air breather. This is followed by a gradual disappearance of gill lamellae, which leaves smooth filaments with a reduced branchial diffusion capacity due to loss of surface area, and a fourfold increase in diffusion distance. This study evaluated the effects these changes have on gill function by examining two size classes of fish that differ in gill morphology. In comparison to smaller fish (approximately 67.5 g), which still have lamellae, larger fish (approximately 724.2 g) without lamellae took up a slightly greater percentage of O2 across the gills (30.1% vs. 23.9%), which indicates that the morphological changes do not place limitations on O2 uptake in larger fish. Both size groups excreted similar percentages of CO2 across the gills (85%-90%). However, larger fish had higher blood PCO2 (26.51.9 vs. 16.51.5 mmHg) and HCO3(-) (40.2 +/- 2.9 vs. 33.6 +/- 4.5 mmol L(-1)) concentrations and lower blood pH (7.58 +/- 0.01 vs. 7.70 +/- 0.04) than did smaller fish, despite having lower mass-specific metabolisms, suggesting a possible diffusion limitation for CO2 excretion in larger fish. With regard to ion regulation, rates of diffusive Na+ loss were about 3.5 times higher in larger fish than they were in smaller fish, despite the lowered branchial diffusion capacity, and rates of Na+ uptake were higher by about the same amount despite 40% lower activity of branchial Na+/K+-ATPase. Kinetic analysis of Na uptake revealed an extremely low-affinity (K(m) = 587.9 +/- 169.5 micromol L(-1)), low-capacity (J(max) = 265.7 +/- 56.8 nmol g(-1) h(-1)) transport system. These data may reflect a general reduction in the role of the gills in ion balance. Renal Na+/K+-ATPase activity was 5-10 times higher than Na+/K+-ATPase activity in the gills, and urine: plasma ratios for Na+ and Cl(-) were very low (0.001-0.005) relative to that of other fish, which suggested an increased role for dietary salt intake and renal salt retention and which was representative of a more "terrestrial" mode of ion regulation. Such de-emphasis of branchial ion regulation confers greatly reduced sensitivity of diffusive ion loss to low water pH. Ammonia excretion also appeared to be impacted by gill changes. Rates of ammonia excretion in larger fish were one third less than that in smaller fish, despite larger fish having blood ammonia concentrations that were twice as high.
Collapse
Affiliation(s)
- R J Gonzalez
- Department of Biology, University of San Diego, 5998 Alcalá Park, San Diego, California 92110, USA.
| | | | | | | | | | | | | | | |
Collapse
|
39
|
Xi W, Waldron JD, Lafon CW, Cairns DM, Birt AG, Tchakerian MD, Coulson RN, Klepzig KD. Modeling Long-Term Effects of Altered Fire Regimes following Southern Pine Beetle Outbreaks (North Carolina). ECOL RESTOR 2009. [DOI: 10.3368/er.27.1.24] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
40
|
Xi W, Wang L, Birt AG, Tchakerian MD, Coulson RN, Klepzig KD. An Integrated Approach to Mapping Forest Conditions in the Southern Appalachians (North Carolina). ECOL RESTOR 2008. [DOI: 10.3368/er.26.4.290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
41
|
|
42
|
Cai B, Liu L, Xi W, Zhu YP, Lu GZ, Yang YX, Wan XP. Comparison of the molecular classification with FIGO stage and histological grade on endometrial cancer. EUR J GYNAECOL ONCOL 2007; 28:451-460. [PMID: 18179135] [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: 05/25/2023]
Abstract
PURPOSE OF INVESTIGATION To classify endometrial cancers based on gene expression profiling, and to compare the prognostic value of the classification systems based on gene expression, grade, and stage. METHODS cDNA microarray was carried out in 32 endometrioid endometrial cancers. Differentially expressed genes were identified among tumor tissues of different grades and stages. The classification and prognosis comparison analysis was performed between histological grades, FIGO stages and gene expression profiles. RESULTS Class comparison analysis between different grade and stage endometrial cancer revealed 33 genes that are differentially expressed in tumors of different grades, ten in those of different stages, and 104 in a combined classification of grades and stages (p < 0.001). CONCLUSION The cDNA microarray technique is a feasible way to generate gene expression profiles of endometrial cancer. Classification based on gene expression patterns may be more accurate than histological grade and FIGO stage classification in predicting the prognosis of tumors.
Collapse
Affiliation(s)
- B Cai
- Department of Obstetrics and Gynecology, Shanghai Jiao Tong University Affiliated First People's Hospital, Shanghai, China
| | | | | | | | | | | | | |
Collapse
|
43
|
Brauner CJ, Wang T, Wang Y, Richards JG, Gonzalez RJ, Bernier NJ, Xi W, Patrick M, Val AL. Limited extracellular but complete intracellular acid-base regulation during short-term environmental hypercapnia in the armoured catfish, Liposarcus pardalis. ACTA ACUST UNITED AC 2004; 207:3381-90. [PMID: 15326214 DOI: 10.1242/jeb.01144] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Environmental hypercapnia induces a respiratory acidosis that is usually compensated within 24-96 h in freshwater fish. Water ionic composition has a large influence on both the rate and degree of pH recovery during hypercapnia. Waters of the Amazon are characteristically dilute in ions, which may have consequences for acid-base regulation during environmental hypercapnia in endemic fishes. The armoured catfish Liposarcus pardalis, from the Amazon, was exposed to a water P(CO(2)) of 7, 14 or 42 mmHg in soft water (in micromol l(-1): Na(+), 15, Cl(-), 16, K(+), 9, Ca(2+), 9, Mg(2+), 2). Blood pH fell within 2 h from a normocapnic value of 7.90+/-0.03 to 7.56+/-0.04, 7.34+/-0.05 and 6.99+/-0.02, respectively. Only minor extracellular pH (pH(e)) recovery was observed in the subsequent 24-96 h. Despite the pronounced extracellular acidosis, intracellular pH (pH(i)) of the heart, liver and white muscle was tightly regulated within 6 h (the earliest time at which these parameters were measured) via a rapid accumulation of intracellular HCO(3)(-). While most fish regulate pH(i) during exposure to environmental hypercapnia, the time course for this is usually similar to that for pH(e) regulation. The degree of extracellular acidosis tolerated by L. pardalis, and the ability to regulate pH(i) in the face of an extracellular acidosis, are the greatest reported to date in a teleost fish. The preferential regulation of pH(i) in the face of a largely uncompensated extracellular acidosis in L. pardalis is rare among vertebrates, and it is not known whether this is associated with the ability to air-breathe and tolerate aerial exposure, or living in water dilute in counter ions, or with other environmental or evolutionary selective pressures. The ubiquity of this strategy among Amazonian fishes and the mechanisms employed by L. pardalis are clearly worthy of further study.
Collapse
Affiliation(s)
- C J Brauner
- Department of Zoology, University of British Columbia, 6270 University Boulevard, Vancouver, B.C., Canada.
| | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Xi W, Sun L, Yao J, Hu J, Zheng D, Liu Y, Hui L, Wang B, Liu G. Relationship between hyperventilation and intracranial pressure in patients with severe head injury. Chin J Traumatol 2001; 4:190-2. [PMID: 11835730] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
With high fatality rate and disability rate, the pathophysiologic changes of severe head injury are complicated. But the method of lowering intracranial pressure (ICP) through artificial hyperventilation is called in question recently. To understand the related changes of the partial pressure of carbon dioxide in artery (PaCO(2)) and the ICP at the acute period of severe head injury, a total of 64 patients with severe head injury were monitored and analyzed on the 3rd day after injury.
Collapse
Affiliation(s)
- W Xi
- Department of Neurosurgery, 155th Hospital of PLA, Kaifeng 475003, China
| | | | | | | | | | | | | | | | | |
Collapse
|
45
|
Abstract
This study focuses on the separation of titanium dioxide from water by cross-flow microfiltration (CMF) within wastewater treatment by photocatalysis using slurry reactor systems. The systematic studies have shown that the separation performance of TiO2 particles is strongly affected by cross-flow velocity, transmembrane pressure, feed concentration, pH of the suspension and ionic strength. An extreme sensitivity to pH and electrolyte concentration indicates the importance of interfacial effects in solid-liquid separation of TiO2 particles. Under optimal conditions, permeate fluxes of up to 1250 l m-2 h-1, approaching those of pure water, could be obtained with a polypropylene membrane which is not sensitive to abrasion. The obtained results makes TiO2 separation by cross-flow microfiltration attractive in solar-catalytic detoxification.
Collapse
Affiliation(s)
- W Xi
- Institut für Thermische Verfahrenstechnik, Technische Universität Clausthal Leibnizstrasse 15, D-38678 Clausthal-Zellerfeld, Germany
| | | |
Collapse
|
46
|
Xi W, Geissen SU, Vogelpohl A. Solar detoxification of wastewater in a novel aerated cascade photoreactor (ACP). Water Sci Technol 2001; 44:237-244. [PMID: 11695465] [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: 05/23/2023]
Abstract
A newly developed aerated cascade photoreactor (ACP), based on a non-concentrating suspension photoreactor, combines the advantages of a cascade with the increased mass-transfer and the use of oxygen from air as an oxidizing agent in a bubble column. Systematic studies of the limiting hydrodynamic conditions in the ACP and the solid/liquid-separation of the photocatalyst from the treated wastewater have shown that the ACP is technically and commercially attractive. The ACP outperforms the thin-film fixed-bed reactor (TFFBR) with respect to a 3-13 times higher degradation efficiency for the model compound dichloroacetic acid (DCA). The treatment of two biologically pretreated real wastewaters, one from a textile factory and one from car-washing, have been successfully carried out under artificial light and sunlight.
Collapse
Affiliation(s)
- W Xi
- Institut für Thermische Verfahrenstechnik Technische Universität Clausthal, Clausthal-Zellerfeld, Germany
| | | | | |
Collapse
|
47
|
Geissen SU, Xi W, Weidemeyer A, Vogelpohl A, Bousselmi L, Ghrab A, Nnabi AE. Comparison of suspended and fixed photocatalytic reactor systems. Water Sci Technol 2001; 44:245-249. [PMID: 11695466] [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: 05/23/2023]
Abstract
Photocatalysis is a promising technology for the purification of pretreated wastewaters in sun-rich countries if an economically applicable reactor system is available. Within this project the catalyst separation as an essential process step of suspended reactor systems was investigated. For the separation of suspended catalyst a sedimentation basin with and without lamella and a membrane filtration were investigated. The sedimentation was found to be very sensitive to the kind of the ion background of wastewater, the pH, the TiO2 influent concentration as well as the hydrodynamics in the clarifier. Under optimized conditions effluent concentrations of less than 5 mg SS/L and a clear water without turbidity could be reached with a specific flow rate of up to 0.7 m3/m2/h. The best performance for P25 was achieved with a TiO2 influent concentration of 5 g/L. Membrane filtration was the only method to guarantee a complete retention of the TiO2 as well as a rejection of microorganisms and high molecular compounds. With cross-flow velocities of 3 m/s and a transmembrane pressure of 100 kPa flux rates up to 1,200 L/m2/h were achieved. A flow-film-reactor (FFR) was operated with the model compound DCA under identical conditions with fixed and suspended TiO2. Whereas the fixed system has the advantage that no separation step is necessary and a simple construction can be used, suspended systems offer a three times higher reaction velocity for a catalyst concentration of 10 g/L, but are also characterized by higher investment costs.
Collapse
Affiliation(s)
- S U Geissen
- Institut für Thermische Verfahrenstechnik, Clausthal University of Technology, Clausthal-Zellerfeld, Germany
| | | | | | | | | | | | | |
Collapse
|
48
|
Abstract
Interactions of low-frequency magnetic fields with biological systems have been a subject of intense scientific inquiry and public concern. Most research has been done at powerline frequencies of 50 Hz or 60 Hz. One of the key questions related to interactions of low-frequency magnetic fields with biological systems is which parameters of the exposure field are responsible for observed effects. Knowledge of the induced electric field and current in various experimental in vitro systems is important for this purpose. The 3D impedance method is used in this research to model spatial patterns of induced electric fields and current in two preparations of cells. A cell monolayer with a random distribution of cells and a confluent monolayer of cells with gap junctions are considered; because of the limitations of the computational method, biological cells are represented by cubes rather than more realistic shapes (e.g. spheres). The random model indicates that for higher cell densities the pattern of the induced current flow has a limited dependence on the size and shape of the container in which the cells are placed, it depends mostly on the actual cell placement. Gap junctions, not surprisingly, are shown to increase the current density, but only if their resistance is sufficiently low. The highest current density occurs in the gaps.
Collapse
Affiliation(s)
- M A Stuchly
- Department of Electrical and Computer Engineering, University of Victoria, PO Box 3055, Victoria, BC, Canada V8W 3P6
| | | |
Collapse
|
49
|
Abstract
Induced electric currents in models of man, rat and mouse from 60 Hz magnetic fields are computed using the impedance method. The models all have realistic shapes, and in the case of rodents, a homogeneous average tissue conductivity is assumed. The model of man is analyzed for two cases, a homogeneous average tissue conductivity and a heterogeneous model, both consisting of 1.3 cm cubical tissue cells whose conductivities are representative of the tissue within the cube. The results for various models and species, as well as different orientations of the magnetic field, are compared. The data presented are useful as the first step in dosimetry for 60 Hz magnetic fields, and for interspecies scaling of biological interactions related to the tissue induced electric currents.
Collapse
Affiliation(s)
- W Xi
- Department of Electrical and Computer Engineering, University of Victoria, B.C
| | | | | |
Collapse
|
50
|
Xi W, Ni X, Lu T, Zhang J, Xu J, Huang M, Wu C. Early diagnosis of typhoid fever using monoclonal antibody. Chin Med Sci J 1993; 8:123-4. [PMID: 8292799] [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: 01/29/2023]
Abstract
In our study, a reverse passive hemagglutination assay (RPHA) method was established using monoclonal antibody-IgM to detect the Salmonella typhi O9 antigen. This method has the advantages of sensitivity, specificity, rapidity, and simplicity, and helps make an early diagnosis of typhoid fever using only small amounts of blood.
Collapse
Affiliation(s)
- W Xi
- Wu Jin People's Hospital, Jiangsu
| | | | | | | | | | | | | |
Collapse
|