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Huang L, Cheng S, Liu Z, Zou C, Yan H. [Transdermal patches containing Cassia seed extract applied at the navel for slow transit constipation in rats: therapeutic effect and analysis of the spectrum-effect relationship]. Nan Fang Yi Ke Da Xue Xue Bao 2024; 44:720-726. [PMID: 38708506 DOI: 10.12122/j.issn.1673-4254.2024.04.14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/07/2024]
Abstract
OBJECTIVE To explore the therapeutic effect of transdermal patches containing Cassia seed extract applied at the navel on slow transit constipation (STC) in rats and explore the spectrum-effect relationship of the patches. METHOD In a STC rat model established by gavage of compound diphenoxylate suspension for 14 days, the transdermal patches containing low, medium and high doses of Cassia seed extract (41.75, 125.25, and 375.75 mg/kg, respectively) were applied at the Shenque acupoint on the abdomen for 14 days after modeling, with constipation patches (13.33 mg/kg) as the positive control. After the treatment, fecal water content and intestinal propulsion rate of the rats were calculated, the pathological changes in the colon were observed with HE staining. Serum NO and NOS levels and the total protein content and NO, NOS and AChE expressions in the colon tissue were determined. HPLC fingerprints of the transdermal patches were established, and the spectrum-effect relationship between the common peaks of the patches and its therapeutic effect were analyzed. RESULTS Treatment with the transdermal patches containing Cassia seed extract significantly increased fecal water content and intestinal propulsion rate of the rat models, where no pathological changes in the colon tissue were detected. The treatment also suppressed the elevations of serum and colonic NO and NOS levels and reduction of AChE in STC rats. Twenty-eight common peaks were confirmed in the HPLC fingerprints of 6 batches of Cassia seed extract-containing patches. Analysis of the spectrum-effect relationship showed that autrantio-obtusin had the greatest contribution to the therapeutic effect of the patches in STC rats. CONCLUSION The Cassia seed extract-containing patches alleviates STC in rats via synergistic actions of multiple active ingredients in the extract, where autrantio-obtusin, rhein, chrysoobtusin, obtusin, obtusifolin, emodin, chrysophanol, and physcion are identified as the main active ingredients.
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Affiliation(s)
- L Huang
- School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - S Cheng
- School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - Z Liu
- School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - C Zou
- School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - H Yan
- School of Pharmacy, Wannan Medical College, Wuhu 241002, China
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Zhao M, Tao Y, Guo W, Ge Z, Hu H, Yan Y, Zou C, Wang G, Ren Y. Multifunctional flexible magnetic drive gripper for target manipulation in complex constrained environments. Lab Chip 2024; 24:2122-2134. [PMID: 38456199 DOI: 10.1039/d3lc00945a] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/09/2024]
Abstract
Soft actuators capable of remote-controlled guidance and manipulation within complex constrained spaces hold great promise in various fields, especially in medical fields such as minimally invasive surgery. However, most current magnetic drive soft actuators only have the functions of position control and guidance, and it is still challenging to achieve more flexible operations on different targets within constrained spaces. Herein, we propose a multifunctional flexible magnetic drive gripper that can be steered within complex constrained spaces and operate on targets of various shapes. On the one hand, changing the internal pressure of the magnetic gripper can achieve functions such as suction or injection of liquid and transportation of targets with smooth surfaces. On the other hand, with the help of slit structures in the constrained environment, by simply changing the position and orientation of the permanent magnet in the external environment, the magnetic gripper can be controlled to clamp and release targets of linear, flaked, and polyhedral shapes. The full flexibility and multifunctionality of the magnetic gripper suggest new possibilities for precise remote control and object transportation in constrained spaces, so it could serve as a direct contact operation tool for hazardous drugs in enclosed spaces or a surgical tool in human body cavities.
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Affiliation(s)
- Meiying Zhao
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150001, China.
- School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China.
| | - Ye Tao
- School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China.
| | - Wenshang Guo
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150001, China.
- School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China.
| | - Zhenyou Ge
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150001, China.
- School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China.
| | - Hanqing Hu
- Colorectal Cancer Surgery Department, The Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China.
| | - Ying Yan
- Department of Oncology, The First Hospital of Harbin, Harbin 150010, China
| | - Chaoxia Zou
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - Guiyu Wang
- Colorectal Cancer Surgery Department, The Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China.
| | - Yukun Ren
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150001, China.
- School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China.
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Li Y, Yuan Z, Wang L, Yang J, Pu P, Le Y, Chen X, Wang C, Gao Y, Liu Y, Wang J, Gao X, Li Y, Wang H, Zou C. Prolyl isomerase Pin1 sculpts the immune microenvironment of colorectal cancer. Cell Signal 2024; 115:111041. [PMID: 38199598 DOI: 10.1016/j.cellsig.2024.111041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 12/14/2023] [Accepted: 01/06/2024] [Indexed: 01/12/2024]
Abstract
Pin1, a peptide prolyl cis-trans isomerase, is overexpressed and/or overactivated in many human malignancies. However, whether Pin1 regulates the immunosuppressive TME has not been well defined. In this study, we detected the effect of Pin1 on immune cells and immune checkpoint PD-L1 in the TME of CRC and explored the anti-tumor efficacy of Pin1 inhibitor ATRA combined with PD-1 antibody. We found that Pin1 facilitated the immunosuppressive TME by raising the proportion of myeloid-derived suppressor cells (MDSCs) and declining the percentage of CD8+ T cells and CD4+ T cells. Pin1 restrained PD-L1 protein expression in CRC cells and the effect was tempered by endoplasmic reticulum (ER) stress inducers. Mechanically, Pin1 overexpression decreased the stability of PD-L1 and promoted its degradation by mitigating ER stress. Silencing or inhibiting Pin1 promoted PD-L1 protein expression by inducing ER stress. Hence, Pin1 inhibitor ATRA enhanced the anti-tumor efficacy of PD-1 antibody in the CRC allograft by upregulating PD-L1. Our results reveal the critical and pleiotropic effects of Pin1 on managing the immune cells and immune checkpoint PD-L1 in the TME of CRC, providing a new promising candidate for combination with immunotherapy.
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Affiliation(s)
- Yang Li
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - Zhongnan Yuan
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - Linlin Wang
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - Jing Yang
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - Pei Pu
- The Fourth Affiliated Hospital of Harbin Medical University, Harbin 150081, China
| | - Yunting Le
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - XianWei Chen
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - Chongyang Wang
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - Yating Gao
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - Yi Liu
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - Jialin Wang
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - Xu Gao
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China; Translational Medicine Research and Cooperation Center of Northern China, Heilongjiang Academy of Medicine Sciences, Harbin 150081, China; Key Laboratory of Cardiovascular Medicine Research of Harbin Medical University, Ministry of Education, Harbin 150081, China; Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China (Harbin Medical University), Ministry of Education, Harbin 150081, China
| | - Yanze Li
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China.
| | - Hefei Wang
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China.
| | - Chaoxia Zou
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China; Translational Medicine Research and Cooperation Center of Northern China, Heilongjiang Academy of Medicine Sciences, Harbin 150081, China.
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Shi LP, Zou C, Mao LJ, Chen TT, Xie T. The expression of UNC5D is abnormal in the early stage of colorectal tumors associated with its proliferation and migration. Eur Rev Med Pharmacol Sci 2024; 28:199-213. [PMID: 38235871 DOI: 10.26355/eurrev_202401_34905] [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: 01/19/2024]
Abstract
OBJECTIVE Colorectal adenomas are an important precancerous lesion of colorectal adenoma with a high incidence. This study aims to explore new prognostic targets for colorectal adenomas through bioinformatics techniques. MATERIALS AND METHODS In this study, data from 29 colonic adenomas and 38 normal colonic mucosa in GSE37364 were analyzed to screen for differentially expressed genes (DEGs). Then, batch survival analysis, construction of risk model, mutation analysis, Cox regression analysis and expression analysis were performed on DEGs to determine the hub genes of this study. Finally, immune correlation analysis and cell experiments were carried out on the hub gene to explore its potential mechanism. RESULTS In our study, a total of 431 up-regulated and 809 down-regulated differentially expressed genes (DEGs) were identified. Among these, Unc-5 Netrin Receptor D (UNC5D) emerged as a pivotal gene associated with colorectal adenoma. Notably, UNC5D expression levels were found to be significantly higher in normal tissues compared to colorectal adenoma tissues. Furthermore, our analysis demonstrated that UNC5D showed promising diagnostic potential for patients with colon adenocarcinoma. In vitro experiments revealed that the overexpression of UNC5D had a profound impact on the behavior of colorectal tumor cells. Specifically, it led to a substantial reduction in the proliferation, motility, and invasion of these tumor cells. Additionally, UNC5D was shown to exert control over STAT1/STAT3 phosphorylation, which in turn regulated the expression of PD-L1 in response to interferon (IFN) stimulation. These findings highlight the significant role of UNC5D in modulating immune responses and the development of colorectal adenoma. UNC5D emerges as a potential diagnostic biomarker and an attractive immunotherapeutic target in the context of colorectal malignancies. These results call for further exploration of UNC5D-based strategies for the diagnosis and treatment of colorectal adenoma and adenocarcinoma. CONCLUSIONS In addition to having the potential to be used as a diagnostic biomarker and an immunotherapeutic target in colorectal malignancies, UNC5D is necessary for the growth of colorectal adenomas. Additionally, UNC5D controlled STAT1/STAT3 phosphorylation to suppress the growth of colorectal cancers by regulating IFN-induced PD-L1 expression.
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Affiliation(s)
- L-P Shi
- Good Clinical Practice Center, The Affiliated Hospital of Nanjing University of Chinese Medicine, Qinhuai District, Nanjing, Jiangsu, China.
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Liu SJ, Pak J, Zou C, Payne E, Foster K, Vasudevan H, Casey-Clyde T, Seo K, O'Loughlin T, Wu D, Lim D, Ozawa T, de Groot J, Berger MS, Weiss W, Gilbert LA, Raleigh D. Identifying Gene-Treatment Interactions and Targetable Radiation Vulnerabilities in Glioblastoma through Coupling of In Vivo CRISPR Perturbation and Single Cell Transcriptomics. Int J Radiat Oncol Biol Phys 2023; 117:S102. [PMID: 37784271 DOI: 10.1016/j.ijrobp.2023.06.057] [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] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Glioblastoma (GBM) is an incurable brain tumor comprised of dynamic malignant cell states and microenvironment components that underlie treatment resistance. Here we use genome-wide CRISPR/Cas9 functional genomics to define biological drivers and therapeutic vulnerabilities across human and mouse GBM models. To interrogate these mechanisms in the context of the tumor microenvironment and in vivo physiology, we established in vivo Perturb-seq intracranially, a technique coupling functional genomics with single cell transcriptomics, where each cell is an individual experiment. MATERIALS/METHODS Orthotopic intracranial tumor models were established using human (GBM6, GBM43) or mouse (GL261, SB28) GBM cells stably expressing CRISPR interference (CRISPRi) machinery. Perturb-seq target selection for phenotyping of gene-treatment interactions was performed using genome-wide CRISPRi screens ± radiotherapy in cell cultures. Dual sgRNA lentivirus libraries were transduced either ex vivo prior to intracranial GBM cell transplantation or in vivo using intratumor convection enhanced delivery (CED). Transcriptional phenotyping was performed using single-cell RNA-seq with CRISPR direct capture following focal brain radiotherapy (2 Gy x 5) or mock treatment. GBM cell states were validated using single-nucleus RNA-seq data from 86 primary-recurrent patient-matched GBMs. Mechanistic and functional validation was performed using small molecule inhibitors, immunohistochemistry, clonogenic assays, and in vivo survival experiments. RESULTS In vivo Perturb-seq ± radiotherapy of 48 genes underlying GBM radiotherapy responses, which were enriched for DNA damage response and metabolic pathways, was performed in > 425,000 single cells. Radiotherapy induced 16 distinct GBM cell states, and genetic perturbations reprogrammed these cell states in a treatment-dependent fashion. Quantitative modeling of gene/radiotherapy interactions using high dimensional manifolds revealed in vivo-specific genetic dependencies. We revealed a critical role for Prkdc, the catalytic subunit of DNA-dependent protein kinase (DNA-PK), as a radiotherapy sensitizer through regulation of cell intrinsic growth and oxidative stress pathways, and cell extrinsic interferon and signaling pathways that altered cell-cell interactions in vivo. These pathways were also disrupted in single-nucleus RNA-seq analysis of post-radiotherapy human GBM tumors. Inhibition of Prkdc using a Food and Drug Administration approved small molecule sensitized GBM cells to radiotherapy and extended survival in mice harboring human intracranial xenografts. CONCLUSION We establish in vivo Perturb-seq in orthotopic GBM models as a platform for simultaneous functional genomic discovery and characterization of therapeutic targets, revealing an underappreciated role for Prkdc in GBM tumors in vivo that is targetable using small molecules. These tools are adaptable for a wide range of disease models and treatment modalities.
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Affiliation(s)
- S J Liu
- University of California San Francisco, Department of Radiation Oncology, San Francisco, CA
| | - J Pak
- University of California, San Francisco, San Francisco, CA
| | - C Zou
- University of California, San Francisco, San Francisco, CA
| | - E Payne
- University of California, San Francisco, San Francisco, CA
| | - K Foster
- University of California, San Francisco, San Francisco, CA
| | - H Vasudevan
- University of California, San Francisco, Department of Radiation Oncology, San Francisco, CA
| | - T Casey-Clyde
- University of California, San Francisco, San Francisco, CA
| | - K Seo
- University of California San Francisco, SAN FRANCISCO, CA
| | - T O'Loughlin
- Icahn School of Medicine at Mount Sinai, New York, NY
| | - D Wu
- University of California, San Francisco, San Francisco, CA
| | - D Lim
- University of California San Francisco, San Francisco, CA
| | - T Ozawa
- University of California, San Francisco, San Francisco, CA
| | - J de Groot
- University of California, San Francisco, San Francisco, CA
| | - M S Berger
- University of California San Francisco, Department of Neurological Surgery, San Francisco, CA
| | - W Weiss
- University of California, San Francisco, San Francisco, CA
| | - L A Gilbert
- University of California, San Francisco, San Francisco, CA
| | - D Raleigh
- University of California San Francisco, Department of Radiation Oncology, San Francisco, CA
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Zou C, Yu Y, Wang H, Matunda C, Ding S, Wang L, Chen X, Le Y, Jin J, Gao X, Zou C. Juglone Inhibits Tumor Metastasis by Regulating Stemness Characteristics and the Epithelial-to-Mesenchymal Transition in Cancer Cells both in Vitro and in Vivo. FRONT BIOSCI-LANDMRK 2023; 28:26. [PMID: 36866547 DOI: 10.31083/j.fbl2802026] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 09/10/2022] [Revised: 12/06/2022] [Accepted: 12/12/2022] [Indexed: 02/12/2023]
Abstract
BACKGROUND The stemness characteristics of cancer cells, such as self-renewal and tumorigenicity, are considered to be responsible, in part, for tumor metastasis. Epithelial-to-mesenchymal transition (EMT) plays an important role in promoting both stemness and tumor metastasis. Although the traditional medicine juglone is thought to play an anticancer role by affecting cell cycle arrest, induction of apoptosis, and immune regulation, a potential function of juglone in regulating cancer cell stemness characteristics remains unknown. METHODS In the present study, tumor sphere formation assay and limiting dilution cell transplantation assays were performed to assess the function of juglone in regulating maintenance of cancer cell stemness characteristics. EMT of cancer cells was assessed by western blot and transwell assay in vitro, and a liver metastasis model was also performed to demonstrate the effect of juglone on colorectal cancer cells in vivo. RESULTS Data gathered indicates juglone inhibits stemness characteristics and EMT in cancer cells. Furthermore, we verified that metastasis was suppressed by juglone treatment. We also observed that these effects were, in part, achieved by inhibiting Peptidyl-prolyl cis-trans isomerase NIMA-interacting 1 (Pin1). CONCLUSIONS These results indicate that juglone inhibits maintenance of stemness characteristics and metastasis in cancer cells.
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Affiliation(s)
- Chendan Zou
- Department of Biochemistry and Molecular Biology, Harbin Medical University, 150081 Harbin, Heilongjiang, China.,Translational Medicine Research and Cooperation Center of Northern China, 150081 Harbin, Heilongjiang, China
| | - Yuan Yu
- Department of Biochemistry and Molecular Biology, Harbin Medical University, 150081 Harbin, Heilongjiang, China
| | - Hefei Wang
- Department of Biochemistry and Molecular Biology, Harbin Medical University, 150081 Harbin, Heilongjiang, China
| | - Cedric Matunda
- Department of Biochemistry and Molecular Biology, Harbin Medical University, 150081 Harbin, Heilongjiang, China.,Department of Biochemistry and Biotechnology, Technical University of Kenya, 999070 Nairobi, Kenya
| | - Shuang Ding
- Department of Biochemistry and Molecular Biology, Harbin Medical University, 150081 Harbin, Heilongjiang, China
| | - Linlin Wang
- Department of Biochemistry and Molecular Biology, Harbin Medical University, 150081 Harbin, Heilongjiang, China
| | - Xianwei Chen
- Department of Biochemistry and Molecular Biology, Harbin Medical University, 150081 Harbin, Heilongjiang, China
| | - Yunting Le
- Department of Biochemistry and Molecular Biology, Harbin Medical University, 150081 Harbin, Heilongjiang, China
| | - Jianfeng Jin
- Department of Biochemistry and Molecular Biology, Hainan Medical University, 571199 Haikou, Hainan, China
| | - Xu Gao
- Department of Biochemistry and Molecular Biology, Harbin Medical University, 150081 Harbin, Heilongjiang, China.,Translational Medicine Research and Cooperation Center of Northern China, 150081 Harbin, Heilongjiang, China.,Academy of Medicine Sciences, 150081 Harbin, Heilongjiang, China
| | - Chaoxia Zou
- Department of Biochemistry and Molecular Biology, Harbin Medical University, 150081 Harbin, Heilongjiang, China.,Translational Medicine Research and Cooperation Center of Northern China, 150081 Harbin, Heilongjiang, China.,Academy of Medicine Sciences, 150081 Harbin, Heilongjiang, China
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E F, Zhang H, Yin W, Wang C, Liu Y, Li Y, Wang L, Wu Y, Zhang R, Zou C, Song T, Matunda C, Zou C, Gao X. CPEB3 deficiency in mice affect ovarian follicle development and causes premature ovarian insufficiency. Cell Death Dis 2021; 13:21. [PMID: 34930897 PMCID: PMC8688431 DOI: 10.1038/s41419-021-04374-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 09/03/2021] [Accepted: 11/03/2021] [Indexed: 11/09/2022]
Abstract
Premature ovarian insufficiency (POI) is a heterogeneous and multifactorial disorder. In recent years, there has been an increasing interest in research on the pathogenesis and treatment of POI, owing to the implementation of the second-child policy in China. Cytoplasmic polyadenylation element-binding protein 3 (CPEB3) is an RNA-binding protein that can bind to specific RNA sequences. CPEB3 can bind to and affect the expression, cellular location, and stability of target RNAs. Cpeb3 is highly expressed in the ovary; however, its functions remain unknown. In this study, Cpeb3-mutant mice were used to characterize the physiological functions of CPEB3. Cpeb3-mutant female mice manifested signs of gradual loss of ovarian follicles, ovarian follicle development arrest, increased follicle atresia, and subfertility with a phenotype analogous to POI in women. Further analysis showed that granulosa cell proliferation was inhibited and apoptosis was markedly increased in Cpeb3-mutant ovaries. In addition, the expression of Gdf9, a potential target of CPEB3, was decreased in Cpeb3-mutant ovaries and oocytes. Altogether, these results reveal that CPEB3 is essential for ovarian follicle development and female fertility as it regulates the expression of Gdf9 in oocytes, disruption of which leads to impaired ovarian follicle development and POI.
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Affiliation(s)
- Fang E
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - He Zhang
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang, 150081, China.,Public Laboratory, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin, 300060, China
| | - Wanli Yin
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Chongyang Wang
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Yuanli Liu
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Yanze Li
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Linlin Wang
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Yue Wu
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Runze Zhang
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Chendan Zou
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Tianjun Song
- Department of General Surgery, Heilongjiang Provincial Hospital Affiliated to Harbin Institute of Technology, Harbin, Heilongjiang, 150000, China
| | - Cedric Matunda
- Department of Biochemistry & Biotechnology, The Technical University of Kenya, Nairobi, Kenya
| | - Chaoxia Zou
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang, 150081, China. .,Translational Medicine Research and Cooperation Center of Northern China, Heilongjiang Academy of Medicine Sciences, Harbin, Heilongjiang, 150081, China.
| | - Xu Gao
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang, 150081, China. .,Translational Medicine Research and Cooperation Center of Northern China, Heilongjiang Academy of Medicine Sciences, Harbin, Heilongjiang, 150081, China. .,Key Laboratory of Cardiovascular Medicine Research of Harbin Medical University, Ministry of Education, Harbin, Heilongjiang, 150081, China. .,Key laboratory of preservation of human genetic resources and disease control in China (Harbin Medical University), Ministry of Education, Harbin, Heilongjiang, China.
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Yu C, Hu XY, Zou C, Yu FF, Liu B, Li Y, Liu Y, Song LJ, Tan L, Li Q, Hu YC, He HY, Chen MY, Zou Z. Associations between severe pulmonary function and residual CT abnormalities in rehabilitating COVID-19 patients. Eur Rev Med Pharmacol Sci 2021; 25:7585-7597. [PMID: 34919259 DOI: 10.26355/eurrev_202112_27457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Coronavirus disease 2019 (COVID-19) spread around the world in 2020. Abnormal pulmonary function and residual CT abnormalities were observed in COVID-19 patients during recovery. Appropriate rehabilitation training is around the corner. The correlation between spirometric impairment and residual CT abnormality remains largely unknown. PATIENTS AND METHODS A cross-sectional study conducted on the pulmonary function of 101 convalescent COVID-19 patients before discharge. Multivariate analysis was used to establish a scoring system to evaluate the spirometric abnormality based on residual chest CT. RESULTS Lung consolidation area >25% and severe-type COVID-19 were two independent risk factors for severe pulmonary dysfunction. Besides, a scoring system was established. People scoring more than 12 points have more chances (17 times) to get severe pulmonary function impairment before discharge. CONCLUSIONS For the first time, a chest CT characteristics-based grading system was suggested to predict the pulmonary dysfunction of COVID-19 patients during convalescence in this study. This study may provide suggestions for pulmonary rehabilitation.
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Affiliation(s)
- C Yu
- Department of Respiratory and Critical Care Medicine, Naval Hospital of Eastern Theater of PLA, Zhoushan, Zhejiang Province, P.R. China.
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Zhang R, Wang J, Xiao Z, Zou C, An Q, Li H, Zhou X, Wu Z, Shi D, Deng Y, Yang S, Wei Y. The Expression Profiles of mRNAs and lncRNAs in Buffalo Muscle Stem Cells Driving Myogenic Differentiation. Front Genet 2021; 12:643497. [PMID: 34306003 PMCID: PMC8294193 DOI: 10.3389/fgene.2021.643497] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 05/25/2021] [Indexed: 11/13/2022] Open
Abstract
Buffalo breeding has become an important branch of the beef cattle industry. Hence, it is of great significance to study buffalo meat production and meat quality. However, the expression profiles of mRNA and long non-coding RNAs (lncRNA) molecules in muscle stem cells (MuSCs) development in buffalo have not been explored fully. We, therefore, performed mRNA and lncRNA expression profiling analysis during the proliferation and differentiation phases of MuSCs in buffalo. The results showed that there were 4,820 differentially expressed genes as well as 12,227 mRNAs and 1,352 lncRNAs. These genes were shown to be enriched in essential biological processes such as cell cycle, p53 signaling pathway, RNA transport and calcium signaling pathway. We also identified a number of functionally important genes, such as MCMC4, SERDINE1, ISLR, LOC102394806, and LOC102403551, and found that interference with MYLPF expression significantly inhibited the differentiation of MuSCs. In conclusion, our research revealed the characteristics of mRNA and lncRNA expression during the differentiation of buffalo MuSCs. This study can be used as an important reference for the study of RNA regulation during muscle development in buffalo.
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Affiliation(s)
- Ruimen Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, China
| | - Jinling Wang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, China
| | - Zhengzhong Xiao
- The Animal Husbandry Research Institute of Guangxi Autonomous, Nanning, China
| | - Chaoxia Zou
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, China
| | - Qiang An
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, China
| | - Hui Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, China
| | - Xiaoqing Zhou
- The Animal Husbandry Research Institute of Guangxi Autonomous, Nanning, China
| | - Zhuyue Wu
- The Animal Husbandry Research Institute of Guangxi Autonomous, Nanning, China
| | - Deshun Shi
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, China
| | - Yanfei Deng
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, China
| | - Sufang Yang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, China.,International Zhuang Medical Hospital Affiliated to Guangxi University Chinese Medicine, Nanning, China
| | - Yingming Wei
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, China
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10
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Li L, Zou C, Dong S, Wu ZX, Ashby CR, Chen ZS, Qiu C. Lurbinectedin for the treatment of small cell lung cancer. Drugs Today (Barc) 2021; 57:377-385. [PMID: 34151904 DOI: 10.1358/dot.2021.57.6.3294559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Small cell lung cancer (SCLC) is a rapidly progressive, aggressive metastatic and lethal subtype of lung cancer. Unfortunately, there has been little progress regarding the development of novel treatments for SCLC. However, lurbinectedin, a transcriptional inhibitor, has emerged as a potential novel treatment for cancer. It produces antitumor efficacy by inhibiting oncogenic transcription activity, inducing the accumulation of DNA double-strand breaks and modulating the tumor microenvironment (TME). Data from phase I/II trials indicates that lurbinectedin has significant antitumor efficacy and tolerable adverse effects in SCLC patients. Furthermore, lurbinectedin is efficacious in platinum-sensitive and platinum-resistant SCLC patients and in those with SCLC relapse after second-line treatment. In 2020, the U.S. Food and Drug Administration (FDA) approved lurbinectedin for the treatment of adult patients with metastatic SCLC or for patients that have received platinum-based chemotherapy. In this review, we discuss the molecular profile and the preclinical and clinical studies of lurbinectedin in the treatment of SCLC patients.
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Affiliation(s)
- L Li
- Key Laboratory of Shenzhen Respiratory Diseases, Institute of Respiratory Disease, The Second Affiliated Hospital of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen People's Hospital, Shenzhen, China
| | - C Zou
- Clinical Research Center, The Second Affiliated Hospital of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen People's Hospital, Shenzhen, China
| | - S Dong
- Clinical Research Center, The Second Affiliated Hospital of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen People's Hospital, Shenzhen, China
| | - Z-X Wu
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York, USA
| | - C R Ashby
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York, USA
| | - Z-S Chen
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York, USA.
| | - C Qiu
- Key Laboratory of Shenzhen Respiratory Diseases, Institute of Respiratory Disease, The Second Affiliated Hospital of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen People's Hospital, Shenzhen, China.
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11
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Abstract
Non-small cell lung cancer (NSCLC) is one of the most devastating cancers with high mortality worldwide. By inhibiting the activity of specific molecular targets in the cancer cells, tyrosine kinase inhibitors (TKIs) have become a standard treatment in combating NSCLC. Tepotinib hydrochloride is an orally bioavailable, mesenchymal-epithelial transition (MET) TKI developed mainly for selected NSCLC patients with METex14 skipping mutations. Tepotinib demonstrated durable clinical response in phase II clinical trials, which led to its approval for use in Japan and breakthrough therapy designation and accelerated approval in the U.S. These progresses highlighted tepotinib as a promising candidate for NSCLC patients. This review summarizes the pharmacological profile of tepotinib, preclinical studies and landmark clinical trials of tepotinib. In addition, we share our perspectives on the future direction of tepotinib as a novel anticancer drug.
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Affiliation(s)
- Z-X Wu
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York, USA
| | - J Li
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York, USA and Department of Otolaryngology-Head and Neck Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - S Dong
- Key Laboratory of Medical Electrophysiology of Education Ministry, School of Pharmacy, Southwest Medical University, China and Shenzhen Public Service Platform on Tumor Precision Medicine and Molecular Diagnosis, Southern University of Science and Technology, Shenzhen, Guangdong, China
| | - L Lin
- Cell Research Center, Shenzhen Bolun Institute of Biotechnology, Shenzhen, China
| | - C Zou
- Key Laboratory of Medical Electrophysiology of Education Ministry, School of Pharmacy, Southwest Medical University, China and Shenzhen Public Service Platform on Tumor Precision Medicine and Molecular Diagnosis, Southern University of Science and Technology, Shenzhen, Guangdong, China. zouchang.cuhk@gmail
| | - Z-S Chen
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York, USA.
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12
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Yan H, Zou C. [Use of Trichosanthis fructus and the core drug pair Trichosanthis fructus- Glycyrrhizae radix et rhizoma in traditional Chinese prescriptions: molecular mechanisms in network pharmacology and molecular docking]. Nan Fang Yi Ke Da Xue Xue Bao 2021; 41:173-183. [PMID: 33624589 DOI: 10.12122/j.issn.1673-4254.2021.02.03] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To analyze the rationale for use of Trichosanthis fructus in traditional Chinese prescriptions and explore the molecular mechanism of the core drug pair Trichosanthis fructus-Glycyrrhizae radix et rhizoma for treatment of phlegm syndrome diseases. OBJECTIVE We analyzed the cumulative frequency of the use of Trichosanthis fructus in traditional Chinese prescriptions and the disease spectrum treated using the prescriptions containing Trichosanthis fructus. We searched TCMSP database for the chemical components of Trichosanthis fructus and Glycyrrhizae radix et rhizoma and explored their target proteins using Swiss Target Prediction database. We also searched the CooLGeN and GeneCards databases for the potential disease target proteins using the key words "phlegm syndrome". The chemical component-target protein-signal pathway network was constructed using DAVID database to analyze the molecular mechanism of Trichosanthis fructus-Glycyrrhizae radix et rhizoma drug pair for treatment of phlegm syndrome diseases, and the result was verified by molecular docking technology. OBJECTIVE A total of 1700 prescriptions containing Trichosanthis fructus were retrieved, which were used for treatment of 28 diseases. Phlegm syndrome was the most frequent among the 28 diseases (14.0%). The Trichosanthis fructus-Glycyrrhizae radix et rhizoma drug pair had a cumulative frequency of 113 for use in treatment of phlegm diseases, and was the core drug pair in prescriptions containing Trichosanthis fructus. Fifty-two chemical components related to phlegm syndrome diseases were identified in the drug pair (9 in Trichosanthis fructus and 43 in Glycyrrhizae radix et rhizoma), and their therapeutic effects were mediated by a total of 41 target proteins involving the cancer pathway, NOD-like receptor signaling pathway and another 17 signal pathways. The results of molecular docking showed that 40 chemical components docking with 10 target protein molecules had total scores greater than 5. OBJECTIVE The different formulations of Trichosanthis fructus containing prescriptions serve different therapeutic purposes. The mechanisms of the Trichosanthis fructus-Glycyrrhizae radix et rhizoma drug pair for treatment of phlegm syndrome diseases involve multiple pathways for regulating cell proliferation, apoptosis and other biological processes.
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Affiliation(s)
- H Yan
- School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - C Zou
- School of Pharmacy, Wannan Medical College, Wuhu 241002, China
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13
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Yuan Z, Zhao Z, Hu H, Zhu Y, Zhang W, Tang Q, Huang R, Gao F, Zou C, Wang G, Wang X. IgG Fc Binding Protein ( FCGBP) is Down-Regulated in Metastatic Lesions and Predicts Survival in Metastatic Colorectal Cancer Patients. Onco Targets Ther 2021; 14:967-977. [PMID: 33603401 PMCID: PMC7886382 DOI: 10.2147/ott.s285171] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [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: 10/03/2020] [Accepted: 01/18/2021] [Indexed: 12/17/2022] Open
Abstract
Background The liver is the most frequent site for metastatic spread in colorectal cancer (CRC) patients, and these patients have much poorer prognosis than those without metastasis. Previous studies have shown that IgG Fc binding protein (FCGBP) plays important roles in tumorigenesis, progression, and prognosis, but its role in CRC metastasis remains unclear. Purpose In this study, we are aimed to explore the significance of FCGBP in liver metastatic CRC (LMCRC) patients. Methods We analyzed the expression of FCGBP RNA between CRC primary samples and liver metastatic samples in the Gene Expression Omnibus (GEO) database and The Cancer Genome Atlas (TCGA). Next, we assessed the expression of FCGBP protein in 135 paired primary CRC (PC) samples and LMCRC samples. Finally, we explored the relationship between the expression features and clinicopathological characteristics. Results The expression data of FCGBP were obtained from the GEO and TCGA databases. FCGBP RNA expression was evaluated between primary lesions (PC) and liver metastatic lesions (LM). FCGBP RNA was down-regulated in PC and LM, and especially lower in LM (p<0.001). Next, the expression of FCGBP protein was evaluated by an immunohistochemistry array in 135 paired primary tumor tissues and metastatic tissues. We found that FCGBP protein was down-regulated in primary lesions and metastatic lesions, especially in metastatic lesions. According to the immunohistochemistry score (SI), each cohort was divided into FCGBP-positive (SI=4–12) and FCGBP-negative (SI=0–3) groups. In both groups, the levels of CEA (PC group, 3.880 vs 77.049, p<0.001; LM group, 3.890 vs 14.239, p=0.008) and CA19-9 (PC group, 8.610 vs 111.700, p<0.001; LM group, 7.660 vs 19.380, p=0.037) were lower than those in the FCGBP-negative group. FCGBP positivity in the LM cohort was an independent risk factor in both overall survival (HR 1.573, 95% Cl [1.017–2.433], p=0.042) and disease-free survival (HR 1.869, 95% Cl [1.256–2.781], p=0.002). Conclusion This study found a relationship between FCGBP expression and clinical information of LMCRC patients, and found that FCGBP expression decreased with disease development. The expression of FCGBP in liver metastasis is associated with both the overall and progression-free survival. Our results show that FCGBP could be a promising prognostic factor for LMCRC.
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Affiliation(s)
- Ziming Yuan
- Department of Colorectal Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
| | - Zhixun Zhao
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People's Republic of China
| | - Hanqing Hu
- Department of Colorectal Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
| | - Yihao Zhu
- Department of Colorectal Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
| | - Weiyuan Zhang
- Department of Colorectal Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
| | - Qingchao Tang
- Department of Colorectal Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
| | - Rui Huang
- Department of Colorectal Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
| | - Feng Gao
- Department of Colorectal Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
| | - Chaoxia Zou
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang, People's Republic of China
| | - Guiyu Wang
- Department of Colorectal Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
| | - Xishan Wang
- Department of Colorectal Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China.,Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People's Republic of China
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14
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Abstract
Heme oxygenase-1 (HO-1) plays an important role in the progression of several malignancies including breast cancer. However, its role in breast cancer metastasis is still ambiguous. In this study, we observed the effect of HO-1 on mouse mammary carcinoma metastasis using the in vivo tumor metastasis model. Our results revealed that overexpression of HO-1 strongly inhibits the lung metastasis of 4T1 cells. In in vitro analysis, associated indices for epithelial-mesenchymal transition (EMT), migration, and proliferation of 4T1 cells were evaluated. The results show that HO-1 inhibits EMT, migration, and proliferation of 4T1 cells. In addition, the Notch1/Slug pathway is found to mediate an antimetastasis role of HO-1 in mouse mammary carcinoma. In conclusion, since HO-1/Notch1/Slug axis plays an important role in breast cancer metastasis, induction of HO-1 could be used as a potential therapeutic strategy for breast cancer treatment.
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Affiliation(s)
- Qiang Li
- *Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, P.R. China
- †Department of General Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, P.R. China
| | - Qi Liu
- *Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, P.R. China
| | - Wanpeng Cheng
- *Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, P.R. China
| | - Huiyan Wei
- *Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, P.R. China
| | - Wenqian Jiang
- *Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, P.R. China
| | - Fang E
- *Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, P.R. China
| | - Yuan Yu
- *Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, P.R. China
| | - Jianfeng Jin
- *Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, P.R. China
| | - Chaoxia Zou
- *Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, P.R. China
- ‡Translational Medicine Research and Cooperation Center of Northern China, Heilongjiang Academy of Medicine Sciences, Harbin, P.R. China
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15
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Wang H, Zou C, Zhao W, Yu Y, Cui Y, Zhang H, E F, Qiu Z, Zou C, Gao X. Juglone eliminates MDSCs accumulation and enhances antitumor immunity. Int Immunopharmacol 2019; 73:118-127. [PMID: 31085459 DOI: 10.1016/j.intimp.2019.04.058] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [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] [Received: 02/17/2019] [Revised: 04/25/2019] [Accepted: 04/26/2019] [Indexed: 01/26/2023]
Abstract
Myeloid-derived suppressor cells (MDSCs) contribute to immune activity suppression and promote the tumor progression. Elimination of MDSCs is a promising cancer therapeutic strategy, and some chemotherapeutic agents have been reported to hamper tumor progression by suppressing MDSCs. Juglone has been showed to exert a direct cytotoxic effect on tumor cells. However, the effect of juglone on MDSCs and anti-tumor immune statue has remained unexplored. In our study, we observed that juglone suppressed tumor growth and metastasis markedly, and the tumor growth suppression in immunocompetent mice was more drastic than that in immunodeficient mice. Juglone reduced the accumulation of MDSCs and increased IFN-γ production by CD8+ T cells. Consistently, juglone affected myeloid cells differentiation and maturation, impairing the immunosuppressive functions of MDSCs. Moreover, juglone down-regulated the level of IL-1β which was mediating accumulation of MDSCs. In addition, juglone inhibited 5FU-induced liver injury in a colorectal carcinoma-bearing mice model. Thus, our work suggests that the anti-tumor effect of juglone is mediated, at least in part, by eliminating accumulation of MDSCs.
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Affiliation(s)
- Hefei Wang
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - Chendan Zou
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - Weiyang Zhao
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - Yuan Yu
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - Yuqi Cui
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - He Zhang
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - Fang E
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - Zini Qiu
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - Chaoxia Zou
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China; Translational Medicine Research and Cooperation Center of Northern China, Heilongjiang Academy of Medicine Sciences, Harbin 150081, China.
| | - Xu Gao
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China; Translational Medicine Research and Cooperation Center of Northern China, Heilongjiang Academy of Medicine Sciences, Harbin 150081, China; Key Laboratory of Cardiovascular Medicine Research of Harbin Medical University, Ministry of Education, Harbin 150081, China.
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16
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Katz R, Bukanova E, Blessing M, Zou C, Ostroff R. Four cases of procedural consolidation with electroconvulsive therapy. Brain Stimul 2019. [DOI: 10.1016/j.brs.2018.12.415] [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: 11/16/2022] Open
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17
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Deng Y, Luo S, Zhang X, Zou C, Yuan H, Liao G, Xu L, Deng C, Lan Y, Zhao T, Gao X, Xiao Y, Li X. A pan-cancer atlas of cancer hallmark-associated candidate driver lncRNAs. Mol Oncol 2018; 12:1980-2005. [PMID: 30216655 PMCID: PMC6210054 DOI: 10.1002/1878-0261.12381] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [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: 04/21/2018] [Revised: 07/21/2018] [Accepted: 09/03/2018] [Indexed: 12/12/2022] Open
Abstract
Substantial cancer genome sequencing efforts have discovered many important driver genes contributing to tumorigenesis. However, very little is known about the genetic alterations of long non‐coding RNAs (lncRNAs) in cancer. Thus, there is a need for systematic surveys of driver lncRNAs. Through integrative analysis of 5918 tumors across 11 cancer types, we revealed that lncRNAs have undergone dramatic genomic alterations, many of which are mutually exclusive with well‐known cancer genes. Using the hypothesis of functional redundancy of mutual exclusivity, we developed a computational framework to identify driver lncRNAs associated with different cancer hallmarks. Applying it to pan‐cancer data, we identified 378 candidate driver lncRNAs whose genomic features highly resemble the known cancer driver genes (e.g. high conservation and early replication). We further validated the candidate driver lncRNAs involved in ‘Tissue Invasion and Metastasis’ in lung adenocarcinoma and breast cancer, and also highlighted their potential roles in improving clinical outcomes. In summary, we have generated a comprehensive landscape of cancer candidate driver lncRNAs that could act as a starting point for future functional explorations, as well as the identification of biomarkers and lncRNA‐based target therapy.
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Affiliation(s)
- Yulan Deng
- College of Bioinformatics Science and Technology, Harbin Medical University, China
| | - Shangyi Luo
- College of Bioinformatics Science and Technology, Harbin Medical University, China
| | - Xinxin Zhang
- College of Bioinformatics Science and Technology, Harbin Medical University, China
| | - Chaoxia Zou
- Department of Biochemistry and Molecular Biology, Harbin Medical University, China
| | - Huating Yuan
- College of Bioinformatics Science and Technology, Harbin Medical University, China
| | - Gaoming Liao
- College of Bioinformatics Science and Technology, Harbin Medical University, China
| | - Liwen Xu
- College of Bioinformatics Science and Technology, Harbin Medical University, China
| | - Chunyu Deng
- College of Bioinformatics Science and Technology, Harbin Medical University, China
| | - Yujia Lan
- College of Bioinformatics Science and Technology, Harbin Medical University, China
| | - Tingting Zhao
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, China
| | - Xu Gao
- Department of Biochemistry and Molecular Biology, Harbin Medical University, China
| | - Yun Xiao
- College of Bioinformatics Science and Technology, Harbin Medical University, China.,Key Laboratory of Cardiovascular Medicine Research, Harbin Medical University, Ministry of Education, China
| | - Xia Li
- College of Bioinformatics Science and Technology, Harbin Medical University, China.,Key Laboratory of Cardiovascular Medicine Research, Harbin Medical University, Ministry of Education, China
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Menth R, Zou C, Romero L, Turner E, Huang K, Gibson A, McWilliams-Koeppen P, Chase B. Development of highly sensitive and specific in vitro renal solute carrier (SLC) uptake cell models using normal human adult renal proximal tubule epithelial cells for drug transporter interaction studies. Toxicol Lett 2018. [DOI: 10.1016/j.toxlet.2018.06.650] [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: 11/24/2022]
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19
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Chen X, Xu Z, Zhang F, Zou C, Zhu Y, Zhong H, Zhu S. PO-039 Sophoridine induces apoptosis and S phase arrest via ROS-dependent JNK and ERK activation in human pancreatic cancer cells. ESMO Open 2018. [DOI: 10.1136/esmoopen-2018-eacr25.84] [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: 11/04/2022] Open
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20
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Xu Z, Zhang F, Zhu Y, Yao C, Zhong H, Zhu S, Zou C, Chen X. PO-036 Traditional chinese medicine Ze-Qi-TANG formula induces apoptosis and S phase arrest via ROS-dependent JNK and ERK activation in lung cancer. ESMO Open 2018. [DOI: 10.1136/esmoopen-2018-eacr25.81] [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: 11/03/2022] Open
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21
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Xu Z, Zhang F, Zhu Y, Yao C, Zhong H, Zhu S, Zou C, Chen X. PO-054 Traditional chinese medicine Ze-Qi-tang formula induces apoptosis and S phase arrest via ROS-dependent JNK and ERK activation in lung cancer. ESMO Open 2018. [DOI: 10.1136/esmoopen-2018-eacr25.98] [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: 11/03/2022] Open
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22
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Yang YC, Zou C. [Surgical treatment of cronic rhinosinusitis with nasal polyps]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 32:328-331. [PMID: 29798287 DOI: 10.13201/j.issn.1001-1781.2018.05.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Indexed: 11/12/2022]
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23
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Hu H, Wang M, Wang H, Liu Z, Guan X, Yang R, Huang R, Tang Q, Zou C, Wang G, Gao X, Wang X. MEGF6 Promotes the Epithelial-to-Mesenchymal Transition via the TGFβ/SMAD Signaling Pathway in Colorectal Cancer Metastasis. Cell Physiol Biochem 2018; 46:1895-1906. [PMID: 29719292 DOI: 10.1159/000489374] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 03/13/2018] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS Colorectal cancer (CRC) is a malignancy that has high morbidity and mortality and is initiated from accumulative genetic events. Although much effort has been made to elucidate the genetic mechanism underlying this disease, it still remains unknown. Here, we discovered a novel role for multiple epidermal growth factor-like domains protein 6 (MEGF6) in CRC, namely, that it induces the epithelial-to-mesenchymal transition (EMT) to promote CRC metastasis via the transforming growth factor beta (TGFβ)/SMAD signaling pathway. METHODS RNA sequencing data from the Gene Expression Omnibus database were analyzed using R software. Based on The Cancer Genome Atlas Colon Adenocarcinoma (TCGA-COAD) cohort, the clinical significance of MEGF6 was investigated. HCT8R, HCT116, and LoVo CRC cells were transfected with small interfering RNA against MEGF6, and their proliferation and sensitivity to fluorouracil were evaluated with the MTT cell proliferation and colony formation assays. Proteins associated with cell growth were detected by western blot analysis. The apoptosis of cells was evaluated by Annexin V/propidium iodide staining, and transwell assays were performed to assess the involvement of MEGF6 in cell migration. Markers of EMT and TGFβ/SMAD signaling were evaluated by quantitative PCR and western blotting, and the correlation between MEGF6 and these markers was assessed in the TCGA colon and renal adenocarcinoma cohort. RESULTS The results showed that MEGF6 was upregulated in HCT8R cells. In addition, MEGF6 was significantly overexpressed in tumor tissue and predicted a poor survival in the TCGA-COAD cohort. Moreover, MEGF6 accelerated CRC cell growth and inhibited apoptosis, and promoted CRC metastasis by inducing the EMT. Finally, we found that TGFβ/SMAD signaling triggered the expression of Slug, which regulates the MEGF6-mediated EMT. CONCLUSIONS MEGF6 may serve as an oncogene to promote cell proliferation and inhibit apoptosis. MEGF6 can also accelerate cell migration via TGFβ/SMAD signaling-mediated EMT.
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Affiliation(s)
- Hanqing Hu
- Department of Colorectal Cancer Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Meng Wang
- Department of Colorectal Cancer Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Hongwei Wang
- Department of General Surgery, the Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Zheng Liu
- Department of Colorectal Surgery, Cancer Institute & Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Xu Guan
- Department of Colorectal Surgery, Cancer Institute & Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Runkun Yang
- Department of Colorectal Cancer Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Rui Huang
- Department of Colorectal Cancer Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Qingchao Tang
- Department of Colorectal Cancer Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Chaoxia Zou
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China
| | - Guiyu Wang
- Department of Colorectal Cancer Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Xu Gao
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, China
| | - Xishan Wang
- Department of Colorectal Cancer Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, China.,Department of Colorectal Surgery, Cancer Institute & Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
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Li D, Zhang Y, Zhang H, Zhan C, Li X, Ba T, Qiu Z, E F, Lv G, Zou C, Wang C, Si L, Zou C, Li Q, Gao X. CADM2, as a new target of miR-10b, promotes tumor metastasis through FAK/AKT pathway in hepatocellular carcinoma. J Exp Clin Cancer Res 2018; 37:46. [PMID: 29506532 PMCID: PMC5836378 DOI: 10.1186/s13046-018-0699-1] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [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: 11/26/2017] [Accepted: 02/07/2018] [Indexed: 12/24/2022]
Abstract
BACKGROUND Cell adhesion molecules (CADMs) comprise of a protein family whose functions include maintenance of cell polarity and tumor suppression. Hypo-expression of CADM2 gene expression has been observed in several cancers including hepatocellular carcinoma (HCC). However, the role and mechanisms of CADM2 in HCC remain unclear. METHODS The expression of CADM2 and miRNA-10b (miR-10b) in HCC tissues and cell lines were detected using real-time PCR and Western blotting. Immunofluorescence was used to detect Epithelial-mesenchymal transition (EMT) progression in HCC cell lines. Dual-luciferase reporter assay was used to determine miR-10b binding to CADM2 3'UTR. Wound healing assay and Transwell assay were performed to examine the migration and invasion of HCC cells. RESULTS We report the effect of CADM2 as a tumor suppressor in HCC. Firstly, we confirmed that CADM2 expression was significantly down regulated in HCC tissues compared to normal tissues according to TCGA data analysis and fresh HCC sample detection. Secondly, overexpression of CADM2 could inhibit EMT process, migratory and invasion ability of HCC cells. Furthermore, the results indicated that CADM2 is a direct target of miR-10b in HCC cells and miR-10b/CADM2 modulates EMT process and migration ability via focal adhesion kinase (FAK) /AKT signaling pathway in HCC. CONCLUSIONS Our study demonstrates that miR-10b-CADM2-FAK/AKT axis plays an important role in HCC metastasis, which might be a novel potential therapeutic option for HCC treatment.
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Affiliation(s)
- Dongliang Li
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Yongjian Zhang
- Department of Hepatobiliary and Pancreas, Heilongjiang Cancer Hospital, Harbin, China
| | - He Zhang
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Chao Zhan
- Department of Hepatobiliary and Pancreas, Heilongjiang Cancer Hospital, Harbin, China
| | - Xin Li
- Department of Respiratory Medical Oncology, Heilongjiang Cancer Hospital, Harbin, China
| | - Tu Ba
- Department of Neck and Breast Surgery, Mudanjiang Tumor Hospital, Mudanjiang, China
| | - Zini Qiu
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Fang E
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Guixiang Lv
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Chendan Zou
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Chuxuan Wang
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Lining Si
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang, 150081, China.,Department of Critical-care Medicine, the Affiliated Hospital of Qinghai University, Xining, Qinghai, China
| | - Chaoxia Zou
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang, 150081, China. .,Translational Medicine Research and Cooperation Center of Northern China, Heilongjiang Academy of Medicine Sciences, Harbin, Heilongjiang, 150081, China.
| | - Qiang Li
- Department of General Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, China.
| | - Xu Gao
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang, 150081, China. .,Translational Medicine Research and Cooperation Center of Northern China, Heilongjiang Academy of Medicine Sciences, Harbin, Heilongjiang, 150081, China. .,Key Laboratory of Cardiovascular Medicine Research of Harbin Medical University, Ministry of Education, Harbin, China.
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25
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Zhang Q, Zhou Y, Majaw JK, Xu J, Wei Z, Mai Q, Zou C, Zhang Y, Fan Z, Huang F, Sun J, Liu Q, Jiang Q. Acute appendicitis in leukaemia patients undergoing haematopoietic stem cell transplantation during the neutropaenic phase: a case series from a single BMT centre in China. Bone Marrow Transplant 2018; 53:219-222. [PMID: 29410536 DOI: 10.1038/bmt.2017.209] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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26
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Fang X, Lu G, Ha K, Lin H, Du Y, Zuo Q, Fu Y, Zou C, Zhang P. Acetylation of TIP60 at K104 is essential for metabolic stress-induced apoptosis in cells of hepatocellular cancer. Exp Cell Res 2017; 362:279-286. [PMID: 29174981 DOI: 10.1016/j.yexcr.2017.11.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [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: 08/28/2017] [Revised: 11/03/2017] [Accepted: 11/21/2017] [Indexed: 10/18/2022]
Abstract
Tumor cells often encounter hypoglycemic microenvironment due to rapid cell expansion. It remains elusive how tumors reprogram the genome to survive the metabolic stress. The tumor suppressor TIP60 functions as the catalytic subunit of the human NuA4 histone acetyltransferase (HAT) multi-subunit complex and is involved in many different cellular processes including DNA damage response, cell growth and apoptosis. Attenuation of TIP60 expression has been detected in various tumor types. The function of TIP60 in tumor development has not been fully understood. Here we found that suppressing TIP60 inhibited p53 K120 acetylation and thus rescued apoptosis induced by glucose deprivation in hepatocellular cancer cells. Excitingly, Lys-104 (K104), a previously identified lysine acetylation site of TIP60 with unknown function, was observed to be indispensable for inducing p53-mediated apoptosis under low glucose condition. Mutation of Lys-104 to Arg (K104R) impeded the binding of TIP60 to human NuA4 complex, suppressed the acetyltransferase activity of TIP60, and inhibited the expression of pro-apoptotic genes including NOXA and PUMA upon glucose starvation. These findings demonstrate the critical regulation of TIP60/p53 pathway in apoptosis upon metabolic stress and provide a novel insight into the down-regulation of TIP60 in tumor cells.
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Affiliation(s)
- Xiao Fang
- Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu Province 225002, China; Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX 77030, United States.
| | - Guojun Lu
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX 77030, United States
| | - Kyungsoo Ha
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX 77030, United States
| | - Han Lin
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX 77030, United States
| | - Ye Du
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX 77030, United States
| | - Qiuhong Zuo
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX 77030, United States
| | - Yi Fu
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX 77030, United States; Ruihua Affiliated Hospital of Soochow University, Suzhou 215100, China
| | - Chaoxia Zou
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX 77030, United States; Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
| | - Pumin Zhang
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX 77030, United States; Beijing Proteome Research Center, Beijing 102200, China
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27
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Wang FY, Zou C, Dong HK, Yang YC, Gao MW, Zhao R, Jin JL, Yang XJ. [Analysis of influencing factors of heart rate deceleration capacity in patients with dilated cardiomyopathy]. Zhonghua Xin Xue Guan Bing Za Zhi 2017; 45:753-757. [PMID: 29036972 DOI: 10.3760/cma.j.issn.0253-3758.2017.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the determinants affecting the heart rate deceleration capacity (DC) in patients with dilated cardiomyopathy (DCM). Methods: One hundred patients with DCM (DCM group) and 202 healthy subjects (control group) were respectively enrolled. Echocardiography and 24 hours electrocardiogram were performed in all subjects. DC value was compared between the two groups. Multiple regression analysis was made to evaluate the related determinants of DC ((age, sex, echocardiographic parameters including the left atrial diameter (LAD) and left ventricular ejection fraction (LVEF)). Results: (1) DC value was significantly lower in DCM group than in control group( (4.40±2.03) ms vs. (7.30±1.81) ms, P<0.01), prevalence of DC value≤4.5 ms was significantly higher in DCM group than in control group (62% vs. 6%, P<0.01). (2) DC value in the DCM group decreased in proportion to increasing LAD dimension, DC value was (5.60±2.04) ms, (4.50±2.07) ms and (3.60±1.62) ms (P<0.05) in DCM patients with LAD≤40 mm, 40 mm<LAD≤50 mm and LAD>50 mm, respectively. (3) DC value in the DCM group was negatively related to the LAD (r=-0.366, P<0.01), positively related to the LVEF (r= 0.241, P<0.01), but not related with age and sex. Multiple factors regression analysis showed that increased LAD was related to the reduced DC values independtly. Conclusion: DC value of the patients in the DCM group is decreased, which indicate the decrease of the vagus nerve tension, and increased LAD is related to the reduced DC value independtly in DCM patients.
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Affiliation(s)
- F Y Wang
- Department of Cardiology, First Affiliated Hospital of Soochow University, Suzhou 215006, China
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28
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Li L, Zou C, Zhou Z, Yu X. Effects of herbal medicine Sijunzi decoction on rabbits after relieving intestinal obstruction. ACTA ACUST UNITED AC 2017; 50:e6331. [PMID: 28953987 PMCID: PMC5609600 DOI: 10.1590/1414-431x20176331] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [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] [Received: 02/25/2017] [Accepted: 08/02/2017] [Indexed: 12/12/2022]
Abstract
Intestinal obstruction leads to blockage of the movement of intestinal contents. After relieving the obstruction, patients might still suffer with compromised immune function and nutritional deficiency. This study aimed to evaluate the effects of Sijunzi decoction on restoring the immune function and nutritional status after relieving the obstruction. Experimental rabbits (2.5±0.2 kg) were randomly divided into normal control group, 2-day intestinal obstruction group, 2-day natural recovery group, 4-day natural recovery group, 2-day treated group, and 4-day treated group. Sijunzi decoction was given twice a day to the treated groups. The concentration of markers was analyzed to evaluate the immune function and nutritional status. The concentration of interleukin-2, immunoglobulins and complement components of the treated groups were significantly higher than the natural recovery group (P<0.05). The levels of CD4+ and CD4+/CD8+ increased then decreased in the treated groups. The levels of tumor necrosis factor-α and CD8+ were significantly lower than the natural recovery group. The level of total protein in the treated groups also increased then decreased after relieving the obstruction. The levels of albumin, prealbumin and insulin-like growth factor-1 were significantly higher in the treated groups than in the natural recovery group (P<0.05). Transferrin level in the treated groups was significantly higher than the obstruction group (P<0.05). Sijunzi decoction can lessen the inflammatory response and improve the nutrition absorption after relieving the obstruction.
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Affiliation(s)
- L Li
- Department of Gastrointestinal Surgery, Tianjin Nankai Hospital, Tianjin, China
| | - C Zou
- Department of Gastrointestinal Surgery, Tianjin Nankai Hospital, Tianjin, China
| | - Z Zhou
- Department of Gastrointestinal Surgery, Tianjin Nankai Hospital, Tianjin, China
| | - X Yu
- Department of Gastrointestinal Surgery, Tianjin Nankai Hospital, Tianjin, China
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29
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Shen L, Liu SJ, Zhang NS, Dai GL, Zou C, Li CY, Chen XH, Ju WZ. Sensitive and selective LC-MS/MS assay for quantitation of flutrimazole in human plasma. Eur Rev Med Pharmacol Sci 2017; 21:2964-2969. [PMID: 28682419] [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: 06/07/2023]
Abstract
OBJECTIVE A highly sensitive liquid chromatography-tandem mass spectrometry method was developed and validated for the determination of flutrimazole in human plasma. This study was to investigate the application of sensitive and selective LC-MS/MS method for quantitation of flutrimazole in human plasma. MATERIALS AND METHODS The analysis and internal standard were extracted with ether and hexane (v:v, 1:1) followed by a rapid isocratic elution with a 0.1% formic acid/methanol (v:v, 20:80) on a C18 column (50 mm × 2.1 mm I.D.) and subsequent analysis by mass spectrometry in the multi-reaction-monitoring mode. The precursor to production transitions of m/z 279.0 → 183.1 and m/z 441.0 → 295.1 were used to measure the analyte and the internal standard. RESULTS The assay was linear over the concentration range of 0.996-99.6 ng•mL-1 for flutrimazole in human plasma. The lower limit of quantification was 0.996 ng•mL-1 and the extraction recovery was larger than 78.83% for flutrimazole. The inter- and intra-day precision of the method at three concentrations was less than 9.26%. CONCLUSIONS The LC-MS/MS method was firstly applied to quantitation of flutrimazole in human plasma.
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Affiliation(s)
- L Shen
- Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China.
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30
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Arenas-Ramirez N, Zou C, Popp S, Zingg D, Brannetti B, Wirth E, Calzascia T, Kovarik J, Sommer L, Zenke G, Woytschak J, Regnier CH, Katopodis A, Boyman O. Improved cancer immunotherapy by a CD25-mimobody conferring selectivity to human interleukin-2. Sci Transl Med 2016; 8:367ra166. [DOI: 10.1126/scitranslmed.aag3187] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 06/08/2016] [Accepted: 09/08/2016] [Indexed: 12/31/2022]
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31
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Zou C, Zou C, Cheng W, Li Q, Han Z, Wang X, Jin J, Zou J, Liu Z, Zhou Z, Zhao W, Du Z. Heme oxygenase-1 retards hepatocellular carcinoma progression through the microRNA pathway. Oncol Rep 2016; 36:2715-2722. [PMID: 27571925 DOI: 10.3892/or.2016.5056] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 07/25/2016] [Indexed: 11/06/2022] Open
Abstract
Heme metabolism system is involved in microRNA (miRNA) biogenesis. The complicated interplay between heme oxygenase-1 (HO-1) and miRNA has been observed in various tissues and diseases, including human malignancy. In the present study, our data showed that stable HO-1 overexpression in hepatocellular carcinoma (HCC) cells downregulated several oncomiRs. The most stably downregulated are miR-30d and miR-107. Iron, one of HO-1 catalytic products, was an important mediator in this regulation. Cell function analysis demonstrated that HO-1 inhibited the proliferation and metastasis of HepG2 cells, whereas miR-30d/miR-107 improved the proliferative and migratory ability of HepG2 cells. The beneficial effect of HO-1 in HCC inhibition could be reversed by upregulating miR-30d and miR-107. Akt and ERK pathways may be involved in the regulation of HO-1/miR-30d/miR-107 in HCC. These data indicate that HO-1 significantly suppresses HCC progression by regulating the miR-30d/miR-107 level, suggesting miR-30d/miR-107 regulation as a new molecular mechanism of HO-1 anticancer effect.
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Affiliation(s)
- Chaoxia Zou
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang, P.R. China
| | - Chendan Zou
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang, P.R. China
| | - Wanpeng Cheng
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang, P.R. China
| | - Qiang Li
- Department of General Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, P.R. China
| | - Zhongjing Han
- Department of Hemopathology, General Hospital of Daqing Oil Field, Daqing, Heilongjiang, P.R. China
| | - Xiaona Wang
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang, P.R. China
| | - Jianfeng Jin
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang, P.R. China
| | - Jiaqi Zou
- Institute of Clinical Pharmacy, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, P.R. China
| | - Zhiyan Liu
- Institute of Clinical Pharmacy, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, P.R. China
| | - Zhongqiu Zhou
- Institute of Clinical Pharmacy, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, P.R. China
| | - Weiming Zhao
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang, P.R. China
| | - Zhimin Du
- Institute of Clinical Pharmacy, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, P.R. China
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32
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Miller J, Drew L, Green O, Dukovski D, McEwan B, Villella A, Patel N, Bastos C, Cullen M, Danh H, Wachi S, Giuliano K, Longo K, Bhalla A, Qiu D, Zou C, Ivarsson M, Munoz B, Mehmet H. WS13.5 CFTR amplifiers are mutation-agnostic modulators that increase CFTR protein levels and complement other CF therapeutic modalities. J Cyst Fibros 2016. [DOI: 10.1016/s1569-1993(16)30137-0] [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: 10/21/2022]
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33
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Hu S, Wang W, Zhang Y, Li B, Qiu X, Zou C, Ran H, Zhang F, Ke S. Small flexible structure for targeted delivery of therapeutic and imaging moieties in precision medicine. Oncotarget 2016; 7:25535-48. [PMID: 27027441 PMCID: PMC5041924 DOI: 10.18632/oncotarget.8335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 03/10/2016] [Indexed: 11/25/2022] Open
Abstract
The goals of precision medicine are to link diagnostic and therapeutic agents, improve clinical outcomes, and minimize side effects. We present a simple, small, flexible three-armed core structure that can be conjugated to targeting, imaging, and therapeutic moieties. The targeting molecule can be a peptide, protein, or chemical compound. The diagnostic reporter can be optical and/or nuclear in nature, and can be replaced by chemo- and/or radiotherapeutic compounds for treatment using a single targeting molecule. Imaging components can be used to detect disease biomarkers, monitor treatment response, and guide surgery in real-time to create a tumor-free margin. Isotope impurity can be exploited to visualize whole-body distribution of therapeutic agents. The one-to-one ratio of targeting component to therapeutic agents facilitates dose calculation. The simple synthesis and flexible, modular nature of the agent facilitate high-purity, large-scale production. The core capacity to "seek, treat, and see" may advance precision medicine in the future.
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Affiliation(s)
- Shaofan Hu
- UTHealth, School of Public Health, Houston, Texas, USA.,Jiangxi Children's Hospital, Nanchang, China
| | - Wei Wang
- Baylor College of Medicine, Houston, Texas, USA
| | - Yanling Zhang
- School of Biotechnology, Southern Medical University, Guangzhou, China.,Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Bingjie Li
- UTHealth, School of Public Health, Houston, Texas, USA
| | - Xiuchun Qiu
- Baylor College of Medicine, Houston, Texas, USA.,The Fourth Military Medical University, Xi'an, China
| | - Chaoxia Zou
- Baylor College of Medicine, Houston, Texas, USA.,Harbin Medical University, Harbin, China
| | - Henry Ran
- Baylor College of Medicine, Houston, Texas, USA
| | - Fujun Zhang
- Baylor College of Medicine, Houston, Texas, USA.,Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Shi Ke
- UTHealth, School of Public Health, Houston, Texas, USA.,Baylor College of Medicine, Houston, Texas, USA
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Zou C, Fu Y, Li C, Liu H, Li G, Li J, Zhang H, Wu Y, Li C. Genome-wide gene expression and DNA methylation differences in abnormally cloned and normally natural mating piglets. Anim Genet 2016; 47:436-50. [DOI: 10.1111/age.12436] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/18/2016] [Indexed: 01/24/2023]
Affiliation(s)
- C. Zou
- Key Lab of Agriculture Animal Genetics, Breeding, and Reproduction of Ministry of Education; College of Animal Science and Technology; Huazhong Agricultural University; Wuhan 430070 People's Republic of China
| | - Y. Fu
- Key Lab of Agriculture Animal Genetics, Breeding, and Reproduction of Ministry of Education; College of Animal Science and Technology; Huazhong Agricultural University; Wuhan 430070 People's Republic of China
| | - C. Li
- Key Lab of Agriculture Animal Genetics, Breeding, and Reproduction of Ministry of Education; College of Animal Science and Technology; Huazhong Agricultural University; Wuhan 430070 People's Republic of China
| | - H. Liu
- Key Lab of Agriculture Animal Genetics, Breeding, and Reproduction of Ministry of Education; College of Animal Science and Technology; Huazhong Agricultural University; Wuhan 430070 People's Republic of China
| | - G. Li
- Key Lab of Agriculture Animal Genetics, Breeding, and Reproduction of Ministry of Education; College of Animal Science and Technology; Huazhong Agricultural University; Wuhan 430070 People's Republic of China
| | - J. Li
- Key Lab of Agriculture Animal Genetics, Breeding, and Reproduction of Ministry of Education; College of Animal Science and Technology; Huazhong Agricultural University; Wuhan 430070 People's Republic of China
| | - H. Zhang
- Key Lab of Agriculture Animal Genetics, Breeding, and Reproduction of Ministry of Education; College of Animal Science and Technology; Huazhong Agricultural University; Wuhan 430070 People's Republic of China
| | - Y. Wu
- Key Lab of Agriculture Animal Genetics, Breeding, and Reproduction of Ministry of Education; College of Animal Science and Technology; Huazhong Agricultural University; Wuhan 430070 People's Republic of China
| | - C. Li
- Key Lab of Agriculture Animal Genetics, Breeding, and Reproduction of Ministry of Education; College of Animal Science and Technology; Huazhong Agricultural University; Wuhan 430070 People's Republic of China
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35
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Hu S, Ke S, Wang W, Ran H, Chen M, Zhang F, Qiu X, Jiang M, Zou C, Zhang R, Cao L, Wen Y, Fu R, Chen C. A single fas gene mutation changes lupus onset, severity, location, and molecular abnormalities in mice. Curr Mol Med 2016; 15:380-5. [PMID: 25941813 DOI: 10.2174/1566524015666150505162638] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 04/24/2015] [Accepted: 04/29/2015] [Indexed: 11/22/2022]
Abstract
Although genetic predisposition plays a major role in the progression of systemic lupus erythematosus (SLE) and its variation in symptoms, the precise relationships between genetic changes and disease status are not well understood. Here, to demonstrate the effect of a single gene mutation on disease etiology, we examined two mouse models of SLE with the same genetic background but different Fas genes. Mice with the Fas(lpr) gene developed severe SLE with renal dysfunction and inflammatory responses in the lung and kidney. By contrast, mice with the Fas(+) gene showed disease-related abnormalities in the liver and joints. Patterns of inflammatory disease markers differed across organs between the two lines of mice. Fas(lpr) mice showed greater MMP signals in the kidney and IL-11 signals in the lung than Fas(+) mice. Fas(+) mice had higher IL-11 signal intensity in the knee region and higher CXCR4 signal intensity in the liver than Fas(lpr) mice. Our results exemplify the complexity of disease and suggest the need for individualized target-specific treatment regimens. Strengths and Limitations of this Study: Fas gene is a well characterized gene in this disease. The molecular components in human disease need more clinical data.
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Affiliation(s)
| | - S Ke
- Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA.
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Zeng YQ, Liu XS, Wu S, Zou C, Xie Q, Xu SM, Jin XW, Li W, Zhou A, Dai Z. Kaempferol Promotes Transplant Tolerance by Sustaining CD4+FoxP3+ Regulatory T Cells in the Presence of Calcineurin Inhibitor. Am J Transplant 2015; 15:1782-92. [PMID: 25808405 DOI: 10.1111/ajt.13261] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [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: 09/04/2014] [Revised: 02/01/2015] [Accepted: 02/05/2015] [Indexed: 01/25/2023]
Abstract
Calcineurin inhibitor cyclosporine is widely used as an immunosuppressant in clinic. However, mounting evidence has shown that cyclosporine hinders tolerance induction by dampening Tregs. Therefore, it is of paramount importance to overcome this pitfall. Kaempferol was reported to inhibit DC function. Here, we found that kaempferol delayed islet allograft rejection. Combination of kaempferol and low-dose, but not high-dose, of cyclosporine induced allograft tolerance in majority of recipient mice. Although kaempferol plus either dose of cyclosporine largely abrogated proliferation of graft-infiltrating T cells and their CTL activity, both proliferation and CTL activity in mice treated with kaempferol plus low-dose, but not high-dose, cyclosporine reemerged rapidly upon treatment withdrawal. Kaempferol increased CD4+FoxP3+ Tregs both in transplanted mice and in vitro, likely by suppressing DC maturation and their IL-6 expression. Reduction in Tregs by low dose of cyclosporine was reversed by kaempferol. Kaempferol-induced Tregs exhibited both allospecific and non-allospecific suppression. Administering IL-6 abrogated allograft tolerance induced by kaempferol and cyclosporine via diminishing CD4+FoxP3+ Tregs. Thus, for the first time, we demonstrated that kaempferol promotes transplant tolerance in the presence of low dose of cyclosporine, which allows for sufficient Treg generation while minimizing side effects, resulting in much-needed synergy between kaempferol and cyclosporine.
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Affiliation(s)
- Y Q Zeng
- Department of Nephrology, the Second Clinical College, Guangzhou University of Chinese Medicine, and Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, Guangdong, P. R. China
| | - X S Liu
- Department of Nephrology, the Second Clinical College, Guangzhou University of Chinese Medicine, and Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, Guangdong, P. R. China
| | - S Wu
- Center for Regenerative and Translational Medicine, the Second Clinical College, Guangzhou University of Chinese Medicine, and Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, Guangdong, P. R. China
| | - C Zou
- Department of Nephrology, the Second Clinical College, Guangzhou University of Chinese Medicine, and Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, Guangdong, P. R. China
| | - Q Xie
- Center for Regenerative and Translational Medicine, the Second Clinical College, Guangzhou University of Chinese Medicine, and Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, Guangdong, P. R. China
| | - S M Xu
- Center for Regenerative and Translational Medicine, the Second Clinical College, Guangzhou University of Chinese Medicine, and Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, Guangdong, P. R. China
| | - X W Jin
- Center for Regenerative and Translational Medicine, the Second Clinical College, Guangzhou University of Chinese Medicine, and Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, Guangdong, P. R. China
| | - W Li
- Center for Regenerative and Translational Medicine, the Second Clinical College, Guangzhou University of Chinese Medicine, and Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, Guangdong, P. R. China
| | - A Zhou
- The Cardiovascular Research Center, Warren Alpert Medical School of Brown University, Providence, RI
| | - Z Dai
- Center for Regenerative and Translational Medicine, the Second Clinical College, Guangzhou University of Chinese Medicine, and Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, Guangdong, P. R. China
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Song H, Deng B, Zou C, Huai W, Zhao R, Zhao W. GSK3β negatively regulates LPS-induced osteopontin expression via inhibiting its transcription. Scand J Immunol 2015; 81:186-91. [PMID: 25565601 DOI: 10.1111/sji.12268] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Accepted: 12/03/2014] [Indexed: 01/23/2023]
Abstract
Osteopontin (OPN) is expressed by a variety of immune cells and is critical for both innate and adaptive immune responses. The expression status of OPN might be tightly regulated to maintain immune homeostasis. However, the mechanisms by which OPN is negatively regulated in LPS-stimulated macrophages remain largely unknown. In this study, we showed that glycogen synthase kinase 3β (GSK3β) inhibitors - SB216763, LiCl and azakenpaullone - enhanced LPS-induced OPN expression in mouse peritoneal macrophages. GSK3β knock-down had the similar effects. Furthermore, we found that GSK3β inhibitors and GSK3β knock-down both increased the activity of OPN promoter in LPS-stimulated macrophages. GSK3β inhibitor-mediated enhancement of LPS-induced OPN promoter activity was abrogated in GSK3β siRNA-treated macrophages. Therefore, we identified GSK3β as a negative regulator of OPN expression and suggest GSK3β as a potential therapeutic target for the intervention of diseases with uncontrolled OPN production.
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Affiliation(s)
- H Song
- Department of Immunology, Shandong University School of Medicine, Jinan, Shandong, China
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Abstract
The present study investigated the hepatoprotective role of selenium during alloxan-induced diabetes in rats. Male Wistar rats were divided into four groups, namely, normal control, selenium treated, diabetic, and selenium-treated diabetic. Diabetes was induced in the animals by injecting alloxan intraperitoneally at a dose rate of 150 mg/kg body weight. Selenium in the form of sodium selenite was supplemented to rats at a dose level of 1 ppm in drinking water, ad libitum for two time durations of 2 and 4 weeks. The effects of different treatments were studied on various parameters in rat liver, which included serum glucose levels, serum insulin levels, alkaline phosphatase (ALP), aspartate aminotransferase (AST), alanine aminotransferase (ALT), lipid peroxidation (LPO), glutathione reduced (GSH), oxidized glutathione (GSSG), total glutathione (TG), superoxide dismutase (SOD), catalase (CAT), glutathione reductase, glutathione peroxidase, metallothionein (MT), and histoarchitecture. A significant increase in the serum glucose levels, LPO levels, and in enzyme activities of ALP, ALT, and AST was observed in diabetic rats which, however, got decreased significantly upon supplementation with selenium. On the contrary, decreased enzyme activities of GSSG, SOD, and CAT and depressed levels of GSH as well as serum insulin levels were observed in diabetic rats which got improved following selenium supplementation. Interestingly, MT levels were increased both in diabetic and selenium-treated diabetic rats. Further, marked alterations in histoarchitecture were seen in diabetic rats with the prominent features being congestion in sinusoids, lipid accumulation, and centrilobular hepatocyte degeneration. However, selenium treatment to diabetic rats showed overall improvement in the hepatic histoarchitecture.
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Affiliation(s)
- C Zou
- Department of Endocrinology, Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical College, Southeast University, Jiangsu, China Xuzhou Institute of Medical Sciences, Xuzhou Institute of Diabetes, Xuzhou, Jiangsu, China
| | - Q Qiu
- Xuzhou Medical College, Xuzhou, Jiangsu, China
| | - H Chen
- Department of Endocrinology, Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical College, Southeast University, Jiangsu, China Xuzhou Institute of Medical Sciences, Xuzhou Institute of Diabetes, Xuzhou, Jiangsu, China
| | - L Dou
- Department of Endocrinology, Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical College, Southeast University, Jiangsu, China Xuzhou Institute of Medical Sciences, Xuzhou Institute of Diabetes, Xuzhou, Jiangsu, China
| | - J Liang
- Department of Endocrinology, Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical College, Southeast University, Jiangsu, China Xuzhou Institute of Medical Sciences, Xuzhou Institute of Diabetes, Xuzhou, Jiangsu, China Xuzhou Medical College, Xuzhou, Jiangsu, China
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Blazquez-Llorca L, Hummel E, Zimmerman H, Zou C, Burgold S, Rietdorf J, Herms J. Correlation of two-photon in vivo imaging and FIB/SEM microscopy. J Microsc 2015; 259:129-136. [PMID: 25786682 PMCID: PMC4672704 DOI: 10.1111/jmi.12231] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [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: 09/12/2014] [Accepted: 01/28/2015] [Indexed: 11/29/2022]
Abstract
Advances in the understanding of brain functions are closely linked to the technical developments in microscopy. In this study, we describe a correlative microscopy technique that offers a possibility of combining two-photon in vivo imaging with focus ion beam/scanning electron microscope (FIB/SEM) techniques. Long-term two-photon in vivo imaging allows the visualization of functional interactions within the brain of a living organism over the time, and therefore, is emerging as a new tool for studying the dynamics of neurodegenerative diseases, such as Alzheimer’s disease. However, light microscopy has important limitations in revealing alterations occurring at the synaptic level and when this is required, electron microscopy is mandatory. FIB/SEM microscopy is a novel tool for three-dimensional high-resolution reconstructions, since it acquires automated serial images at ultrastructural level. Using FIB/SEM imaging, we observed, at 10 nm isotropic resolution, the same dendrites that were imaged in vivo over 9 days. Thus, we analyzed their ultrastructure and monitored the dynamics of the neuropil around them. We found that stable spines (present during the 9 days of imaging) formed typical asymmetric contacts with axons, whereas transient spines (present only during one day of imaging) did not form a synaptic contact. Our data suggest that the morphological classification that was assigned to a dendritic spine according to the in vivo images did not fit with its ultrastructural morphology. The correlative technique described herein is likely to open opportunities for unravelling the earlier unrecognized complexity of the nervous system.
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Affiliation(s)
- L Blazquez-Llorca
- Center for Neuropathology and Prion Research (ZNP) and German Center for Neurodegenerative Diseases (DZNE) - site Munich, Ludwig-Maximilians-University Munich, Munich, Germany
| | - E Hummel
- Carl Zeiss Microscopy, Munich, Germany
| | | | - C Zou
- Center for Neuropathology and Prion Research (ZNP) and German Center for Neurodegenerative Diseases (DZNE) - site Munich, Ludwig-Maximilians-University Munich, Munich, Germany
| | - S Burgold
- Center for Neuropathology and Prion Research (ZNP) and German Center for Neurodegenerative Diseases (DZNE) - site Munich, Ludwig-Maximilians-University Munich, Munich, Germany
| | | | - J Herms
- Center for Neuropathology and Prion Research (ZNP) and German Center for Neurodegenerative Diseases (DZNE) - site Munich, Ludwig-Maximilians-University Munich, Munich, Germany.,Munich Cluster of Systems Neurology (SyNergy), Ludwig-Maximilians-University, Munich, Munich, Germany
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Liu Y, Lear T, Zhao Y, Zhao J, Zou C, Chen BB, Mallampalli RK. F-box protein Fbxl18 mediates polyubiquitylation and proteasomal degradation of the pro-apoptotic SCF subunit Fbxl7. Cell Death Dis 2015; 6:e1630. [PMID: 25654763 PMCID: PMC4669792 DOI: 10.1038/cddis.2014.585] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2014] [Revised: 11/11/2014] [Accepted: 11/20/2014] [Indexed: 01/25/2023]
Abstract
Fbxl7, a subunit of the SCF (Skp-Cul1-F-box protein) complex induces mitotic arrest in cells; however, molecular factors that control its cellular abundance remain largely unknown. Here, we identified that an orphan F-box protein, Fbxl18, targets Fbxl7 for its polyubiquitylation and proteasomal degradation. Lys 109 within Fbxl7 is an essential acceptor site for ubiquitin conjugation by Fbxl18. An FQ motif within Fbxl7 serves as a molecular recognition site for Fbxl18 interaction. Ectopically expressed Fbxl7 induces apoptosis in Hela cells, an effect profoundly accentuated after cellular depletion of Fbxl18 protein or expression of Fbxl7 plasmids encoding mutations at either Lys 109 or within the FQ motif. Ectopic expression of Fbxl18 plasmid-limited apoptosis caused by overexpressed Fbxl7 plasmid. Thus, Fbxl18 regulates apoptosis by mediating ubiquitin-dependent proteasomal degradation of the pro-apoptotic protein Fbxl7 that may impact cellular processes involved in cell cycle progression.
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Affiliation(s)
- Y Liu
- Department of Medicine, the Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA, USA
| | - T Lear
- Department of Medicine, the Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA, USA
| | - Y Zhao
- Department of Medicine, the Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA, USA
| | - J Zhao
- Department of Medicine, the Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA, USA
| | - C Zou
- Department of Medicine, the Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA, USA
| | - B B Chen
- Department of Medicine, the Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA, USA
| | - R K Mallampalli
- Department of Medicine, the Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, PA, USA
- Medical Specialty Service Line, Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, PA, USA
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Hu S, Ke S, Wang W, Ran H, Chen M, Zhang F, Qiu X, Jiang M, Zou C, Zhang R, Cao L, Fu R, Chen C. A9: Exploring Systemic Lupus Erythematosus from the Molecular Level and Dissecting the Disease Mechanism by Molecular Imaging. Arthritis Rheumatol 2014. [DOI: 10.1002/art.38420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shaofan Hu
- Jiangxi Children's Hospital; Nanchang China
| | - Shi Ke
- Baylor College of Medicine; Houston TX
| | - Wei Wang
- Baylor College of Medicine; Houston TX
| | - Henry Ran
- Baylor College of Medicine; Houston TX
| | - Meipu Chen
- The Second People's Hospital; Liaocheng China
| | - Fujun Zhang
- Cancer Center and State Key Laboratory of Oncology in South China, Sun Yat-sen University; Guangzhou China
| | - Xiuchun Qiu
- The Fourth Military Medical University; Xi'an China
| | - Ming Jiang
- Peking Union Medical Hospital; Beijing China
| | | | | | - Li Cao
- Capital Institute of Pediatrics; Beijing China
| | - Rui Fu
- Jiangxi Children's Hospital; Nanchang China
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Cao L, Chen S, Zou C, Ding X, Gao L, Liao Z, Liu G, Malmstrom TK, Morley JE, Flaherty JH, An Y, Dong B. A pilot study of the SARC-F scale on screening sarcopenia and physical disability in the Chinese older people. J Nutr Health Aging 2014; 18:277-83. [PMID: 24626755 DOI: 10.1007/s12603-013-0410-3] [Citation(s) in RCA: 98] [Impact Index Per Article: 9.8] [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: 12/25/2022]
Abstract
INTRODUCTION The SARC-F scale is a newly developed tool to diagnose sarcopenia and obviate the need for measurement of muscle mass. SARC-F ≥ 4 is defined as sarcopenia. The questions of SARC-F cover physical functions targeting sarcopenia or initial presentation for sarcopenia. The aim of the study is to explore the application of SARC-F in the Chinese people. METHODS Two hundred thirty Chinese people over 65 years old were assessed by the SARC-F scale, PSMS, Lawton IADL and the shortened version of the falls efficacy scale-international(the short FES-I). Hospitalization was investigated. Physical performance and strength were measured. The association of SARC-F with other scales or tests was analyzed. RESULTS Poor physical performance and grip strength were associated with SARC-F ≥ 4 independently (P<0.005). The κ value for agreement of SARC-F ≥ 4 and cutoff points of tests were 0.391 to 0.635. The short FES-I were correlated to SARC-F scores (Spearman's coefficient 0.692). Poor PSMS and Lawton IADL scores were associated with SARC-F ≥ 4(P=0.000) and SARC-F ≥ 4 was associated with hospitalization in the past 2 years (P=0.000). CONCLUSION The SARC-F scale can identify old Chinese people with impaired physical function who may suffered from sarcopenia. SARC-F judgment reflects fear of falling, indicates the hospitalization events and is associated with ability of daily life. Thus, SARC-F may be a simple and useful tool for screening individuals with impaired physical function. Further studies on SARC-F in Chinese people would be worthy.
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Affiliation(s)
- L Cao
- Birong Dong, No. 37 Guoxuexiang, Wuhou District, Chengdu, China, 610041, , FAX: 028-85422321
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Ke S, Wang W, Qiu X, Zhang F, Yustein JT, Cameron AG, Zhang S, Yu D, Zou C, Gao X, Lin J, Yallampalli S, Li M. Multiple target-specific molecular agents for detection and image analysis of breast cancer characteristics in mice. Curr Mol Med 2013; 13:446-58. [PMID: 23331017 PMCID: PMC3636521 DOI: 10.2174/1566524011313030014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Revised: 10/12/2012] [Accepted: 10/15/2012] [Indexed: 01/25/2023]
Abstract
Breast cancer is a heterogenetic tumor at the cellular level with multiple factors and components. The inconsistent expression of molecular markers during disease progression reduces the accuracy of diagnosis and efficacy of target-specific therapy. Single target-specific imaging agents can only provide limited tumor information at one time point. In contrast, multiple target-specific imaging agents can increase the accuracy of diagnosis. The aim of this study was to demonstrate the ability of multi-agent imaging to discriminate such differences in single tumor. Mice bearing human cancer cell xenografts were tested to determine individual differences under optimal experimental conditions. Neovasculature agent (RGD peptide), tumor stromal agent (matrix metalloproteinase), and tumor cell markers (epidermal growth factor, Her-2, interleukin 11) imaging agents were labeled with reporters. 18F-Fluorodeoxyglucose was used to evaluate the tumor glucose status. Optical, X-ray, positron emission tomography, and computer tomography imaging modalities were used to determine tumor characteristics. Tumor size and imaging data demonstrated that individual differences exist under optimal experimental conditions. The target-specific agents used in the study bind to human breast cancer cell lines in vitro and xenografts in vivo. The pattern of binding corresponds to that of tumor markers. Multi-agent imaging had complementary effects in tumor detection. Multiple noninvasive imaging agents and modalities are complementary in the interrogation of unique biological information from each individual tumor. Such multi-agent approaches provide methods to study several disease components simultaneously. In addition, the imaging results provide information on disease status at the molecular level.
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Affiliation(s)
- S Ke
- Department of Radiology, Baylor College of Medicine, One Baylor Plaza, MS: BCM360, Houston, Texas 77030, USA.
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An T, Zhang Y, Huang Y, Zhang R, Yin S, Guo X, Wang Y, Zou C, Wei B, Lv R, Zhou Q, Zhang J. Neuregulin-1 protects against doxorubicin-induced apoptosis in cardiomyocytes through an Akt-dependent pathway. Physiol Res 2013; 62:379-85. [PMID: 23590603 DOI: 10.33549/physiolres.932516] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
In previous studies, it has been shown that recombinant human neuregulin-1(rhNRG-1) is capable of improving the survival rate in animal models of doxorubicin (DOX)-induced cardiomyopathy; however, the underlying mechanism of this phenomenon remains unknown. In this study, the role of rhNRG-1 in attenuating doxorubicin-induce apoptosis is confirmed. Neonatal rat ventricular myocytes (NRVMs) were subjected to various treatments, in order to both induce apoptosis and determine the effects of rhNRG-1 on the process. Activation of apoptosis was determined by observing increases in the protein levels of classic apoptosis markers (including cleaved caspase-3, cytochrome c, Bcl-2, BAX and terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick-end labeling (TUNEL) staining). The activation of Akt was detected by means of western blot analysis. The study results showed that doxorubicin increased the number of TUNEL positive cells, as well as the protein levels of cleaved caspase-3 and cytochrome c, and reduced the ratio of Bcl-2/Bax. However, all of these effects were markedly antagonized by pretreament with rhNRG-1. It was then further demonstrated that the effects of rhNRG-1 could be blocked by the phosphoinositole-3-kinase inhibitor LY294002, indicating the involvement of the Akt process in mediating the process. RhNRG-1 is a potent inhibitor of doxorubicin-induced apoptosis, which acts through the PI3K-Akt pathway. RhNRG-1 is a novel therapeutic drug which may be effective in preventing further damage from occurring in DOX-induced damaged myocardium.
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Affiliation(s)
- T An
- Heart Failure Center, Cardiovascular Institute and Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Li C, Han J, Yao Q, Zou C, Xu Y, Zhang C, Shang D, Zhou L, Zou C, Sun Z, Li J, Zhang Y, Yang H, Gao X, Li X. Subpathway-GM: identification of metabolic subpathways via joint power of interesting genes and metabolites and their topologies within pathways. Nucleic Acids Res 2013; 41:e101. [PMID: 23482392 PMCID: PMC3643575 DOI: 10.1093/nar/gkt161] [Citation(s) in RCA: 93] [Impact Index Per Article: 8.5] [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: 12/24/2022] Open
Abstract
Various 'omics' technologies, including microarrays and gas chromatography mass spectrometry, can be used to identify hundreds of interesting genes, proteins and metabolites, such as differential genes, proteins and metabolites associated with diseases. Identifying metabolic pathways has become an invaluable aid to understanding the genes and metabolites associated with studying conditions. However, the classical methods used to identify pathways fail to accurately consider joint power of interesting gene/metabolite and the key regions impacted by them within metabolic pathways. In this study, we propose a powerful analytical method referred to as Subpathway-GM for the identification of metabolic subpathways. This provides a more accurate level of pathway analysis by integrating information from genes and metabolites, and their positions and cascade regions within the given pathway. We analyzed two colorectal cancer and one metastatic prostate cancer data sets and demonstrated that Subpathway-GM was able to identify disease-relevant subpathways whose corresponding entire pathways might be ignored using classical entire pathway identification methods. Further analysis indicated that the power of a joint genes/metabolites and subpathway strategy based on their topologies may play a key role in reliably recalling disease-relevant subpathways and finding novel subpathways.
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Affiliation(s)
- Chunquan Li
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin 150081, PR China
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Ke S, Wang W, Qiu X, Zhang F, T. Yustein J, G. Cameron A, Zhang S, Yu D, Zou C, Gao X, Lin J, Yallampalli S, Li M. Multiple Target-Specific Molecular Agents for Detection and Image Analysis of Breast Cancer Characteristics in Mice. Curr Mol Med 2013. [DOI: 10.2174/156652413805076849] [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: 11/22/2022]
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Ke S, Zhang F, Wang W, Qiu X, Lin J, Cameron AG, Zou C, Gao X, Zou C, Zhu VF, Li M. Multiple target-specific molecular imaging agents detect liver cancer in a preclinical model. Curr Mol Med 2013; 12:944-51. [PMID: 22779431 PMCID: PMC3428706 DOI: 10.2174/156652412802480952] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2012] [Revised: 04/27/2012] [Accepted: 05/06/2012] [Indexed: 12/21/2022]
Abstract
Liver cancer is the fifth most common cause of cancer deaths worldwide. Noninvasive diagnosis is difficult and the disease heterogeneity reduces the accuracy of pathological assays. Improvement in diagnostic imaging of specific molecular disease markers has provided hope for accurate and early noninvasive detection of liver cancer. However, all current imaging technologies, including ultrasonography, computed tomography (CT), positron emission tomography (PET), and magnetic resonance imaging, are not specific targets for detection of liver cancer. The aim of this study was to test the feasibility of injecting a cocktail of specific molecular imaging agents to noninvasively image liver cancer. The target-specific cocktail contained agents for imaging the neovasculature (RGD peptide), matrix metalloproteinase (MMP), and glucose transport (18F-fluorodeoxyglucose [18F-FDG]). Imaging studies were performed in liver cancer cells and xenograft models. The distribution of MMP at the intracellular level was imaged by confocal microscopy. RGD, MMP, and 18F-FDG were imaged on tumor-bearing mice using PET, CT, X-ray, and multi-wavelength optical imaging modalities. Image data demonstrated that each agent bound to a specific disease target component. The same liver cancer xenograft contained multiple disease markers. Those disease markers were heterogenetically distributed in the same tumor nodule. The molecular imaging agents had different distributions in the whole body and inside the tumor nodule. All target-specific agents yielded high tumor-to-background ratios after injection. In conclusion, target-specific molecular imaging agents can be used to study liver cancer in vitro and in vivo. Noninvasive multimodal/multi-target-specific molecular imaging agents could provide tools to simultaneously study multiple liver cancer components.
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Affiliation(s)
- S Ke
- Department of Radiology, Baylor College of Medicine, One Baylor Plaza, MS 360, Houston, Texas 77030, USA.
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Zou C, Zhang H, Li Q, Xiao H, Yu L, Ke S, Zhou L, Liu W, Wang W, Huang H, Ma N, Liu Q, Wang X, Zhao W, Zhou H, Gao X. Heme oxygenase-1: a molecular brake on hepatocellular carcinoma cell migration. Carcinogenesis 2011; 32:1840-8. [PMID: 22016469 DOI: 10.1093/carcin/bgr225] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is a fatal disease with great public health impact worldwide. Heme oxygenase (HO)-1 has recently been reported as an important player in tumor angiogenesis and metastasis. However, the role of HO-1 in liver cancer metastasis is unclear. In this study, we explored genetic differences and downstream signal transduction pathways of HO-1 in liver cancer cell lines. HO-1 wild-type and mutant cell lines were generated from human liver cancer cell line HepG2. The overexpression of wild-type HO-1 decreased the migration of HepG2 cells. In contrast, the overexpression of mutant HO-1G143H increased the migration of the cancer cells. Interleukin (IL)-6 is one of the major downstream molecules that mediated this process because IL-6 expression and migration are suppressed by HO-1 and increased when HO-1 is knocked down by shRNA. In addition, we demonstrated carbon monoxide (CO) and p38MAPK are the cofactors in this signal pathway. In vivo animal model demonstrated HO-1 inhibited the tumor growth. In conclusion, in vitro and in vivo data show HO-1 inhibits the human HCC cells migration and tumor growth by suppressing the expression of IL-6. The heme degradation product CO is a cofactor in this process and inhibits p38MAPK phosphorylation.
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Affiliation(s)
- C Zou
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin 150081, China
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Zou C, Zhao P, Lei Y, Ye H, Yao Y, Chen M, Wang T. Preparation and Performance of a Novel Water-Soluble Cationic Polymer Containing β-Cyclodextrin. Chem Eng Technol 2011. [DOI: 10.1002/ceat.201100143] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Abstract
Yams (Dioscorea spp.) are widely grown in China as vegetables and herbal medicine. However, studies on viral diseases on yams are still limited. As a pilot project of a government initiative for improving yam productivity, a small study was conducted in Guangxi, a southern province of China, on viral disease in yams. Incidence of virus-like disease for the three extensively grown D. alata cultivars, GH2, GH5, and GH6, were 12 to 40%, 12 to 29%, and 11 to 25%, respectively, as found in a field survey with a five-plot sampling method in 2010. A total of 112 leaf samples showing mosaic or mottling or leaves without symptoms were collected from the cvs. GH2, GH5, GH6, and seven additional cultivars (D. alata cvs. GY2, GY23, GY47, GY69, GY62, GY72, and D. batatas cv. Tiegun). To determine if the symptoms were caused by Yam mild mosaic virus (YMMV; genus Potyvirus, family Potyviridae), total RNA was extracted from leaves with a commercial RNA purification kit (TIANGEN, Beijing, China), and reverse-transcription (RT)-PCR was conducted with a YMMV-specific primer pair (4) that amplifies the 3'-terminal portion of the viral genome. A PCR product with the predicted size of 262 bp was obtained from samples of GH5 (number testing positive of total number of leaves = 5 of 12), GH6 (24 of 42), and GY72 (1 of 1), but not from asymptomatic leaves. PCR products from a GH5 sample (YMMV-Nanning) and a GH6 sample (YMMV-Luzhai) were cloned and sequenced using an ABI PRISM 3770 DNA Sequencer. The two PCR products were 97% identical at nucleotide (nt) level and with the highest homology (89% identity) to a YMMV isolate (GenBank Accession No. AJ305466). To further characterize the isolates, degenerate primers (2) were used to amplify viral genome sequence corresponding to the C-terminal region of the nuclear inclusion protein b (NIb) and the N-terminal region of the coat protein (CP). These 781-nt fragments were sequenced and a new primer, YMMV For1 (5'-TTCATGTCGCACAAAGCAGTTAAG-3') corresponding to the NIb region, was designed and used together with primer YMMV UTR 1R to amplify a fragment that covers the complete CP region of YMMV by RT-PCR. These 1,278-nt fragments were sequenced (GenBank Accession Nos. JF357962 and JF357963). CP nucleotide sequences of the YMMV-Nanning and YMMV-Luzhai isolates were 94% similar, while amino acid sequences were 99% similar. BLAST searches revealed a nucleotide identity of 82 to 89% and a similarity of 88 to 97% for amino acids to sequences of YMMV isolates (AF548499 and AF548519 and AAQ12304 and BAA82070, respectively) in GenBank. YMMV is known to be prevalent on D. alata in Africa and the South Pacific, and has recently been identified in the Caribbean (1) and Colombia (3). To our knowledge, this is the first report of the natural occurrence of YMMV in China and it may have implications for yam production and germplasm exchange within China. References: (1) M. Bousalem and S. Dallot. Plant Dis. 84:200, 2000. (2) D. Colinet et al. Phytopathology 84:65, 1994. (3) S. Dallot et al. Plant Dis. 85:803, 2001. (4) R. A. Mumford and S. E. Seal. J. Virol. Methods 69:73, 1997.
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Affiliation(s)
- C Zou
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources (SKLCUSA) and College of Life Science and Technology (CLST), Guangxi University, Nanning, China
| | - J Meng
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources (SKLCUSA) and College of Life Science and Technology (CLST), Guangxi University, Nanning, China
| | - Z Li
- College of Agriculture, Guangxi University, Nanning, China
| | - M Wei
- College of Agriculture, Guangxi University, Nanning, China
| | - J Song
- College of Agriculture, Guangxi University, Nanning, China
| | - B Chen
- SKLCUSA and CLST, Guangxi University, Nanning 530004, China
| | - B Wei
- Institute of Cash Crops, Guangxi Academy of Agriculture, Nanning 530007, China
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