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Santinello B, Sun R, Amjad A, Hoyt SJ, Ouyang L, Courret C, Drennan R, Leo L, Larracuente AM, Core LM, O’Neill RJ, Mellone BG. A centromere-derived retroelement RNA localizes in cis and is a core element of the transcriptional landscape of Drosophila centromeres. bioRxiv 2024:2024.01.14.574223. [PMID: 38293134 PMCID: PMC10827089 DOI: 10.1101/2024.01.14.574223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Centromeres are essential chromosomal landmarks that dictate the point of attachment between chromosomes and spindle microtubules during cell division. The stable transmission of the centromere site through generations is ensured by a unique chromatin containing the histone H3 variant CENP-A. Previous studies have highlighted the impact of transcription on promoting CENP-A deposition. However, the specific sequences undergoing this transcription and their contribution to centromere function in metazoan systems remain elusive. In this study, we unveil the centromeric transcriptional landscape and explore its correlation with CENP-A in D. melanogaster, currently the only in vivo model with assembled centromeres. We find that the centromere-enriched retroelement G2/Jockey-3 (hereafter referred to as Jockey-3) is a major driver of centromere transcription, producing RNAs that localize to all mitotic centromeres, with the Y centromere showing the most transcription. Taking advantage of the polymorphism of Jockey-3, we show that these RNAs remain associated with their cognate DNA sequences in cis. Using a LacI/lacO system to generate de novo centromeres, we find that Jockey-3 transcripts do not localize to ectopic sites, suggesting they are unlikely to function as non-coding RNAs with a structural role at centromeres. At de novo centromeres on the lacO array, the presence of CENP-A augments the detection of exogenous lacO-derived transcripts specifically in metaphase. We propose that Jockey-3 contributes to the epigenetic maintenance of the centromere by promoting chromatin transcription, while inserting in a region that permits its continuous transmission. Given the conservation of retroelements as centromere components across taxa, our findings have broad implications in understanding this widespread association.
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Affiliation(s)
- B Santinello
- Department of Molecular and Cell Biology, University of Connecticut, Storrs, CT, US
| | - R Sun
- Department of Molecular and Cell Biology, University of Connecticut, Storrs, CT, US
| | - A Amjad
- Department of Molecular and Cell Biology, University of Connecticut, Storrs, CT, US
| | - SJ Hoyt
- Department of Molecular and Cell Biology, University of Connecticut, Storrs, CT, US
| | - L Ouyang
- Department of Molecular and Cell Biology, University of Connecticut, Storrs, CT, US
| | - C Courret
- Department of Biology, University of Rochester, Rochester, NY, US
| | - R Drennan
- Department of Molecular and Cell Biology, University of Connecticut, Storrs, CT, US
| | - L Leo
- Department of Molecular and Cell Biology, University of Connecticut, Storrs, CT, US
- Dipartimento di Biologia e Biotecnologie “Charles Darwin”, “Sapienza” University of Rome, 00185 Rome, Italy
- Present address: RNA editing Lab, Onco-Haematology Department, Genetics and Epigenetics of Pediatric Cancers, Bambino Gesù Children Hospital, IRCCS, 00146 Rome, Italy
| | - AM Larracuente
- Department of Biology, University of Rochester, Rochester, NY, US
| | - LM Core
- Department of Molecular and Cell Biology, University of Connecticut, Storrs, CT, US
- Institute for Systems Genomics, University of Connecticut, Storrs CT, US
| | - RJ O’Neill
- Department of Molecular and Cell Biology, University of Connecticut, Storrs, CT, US
- Institute for Systems Genomics, University of Connecticut, Storrs CT, US
- Department of Genetics and Genome Sciences, UConn Health, Farmington, CT, US
| | - BG Mellone
- Department of Molecular and Cell Biology, University of Connecticut, Storrs, CT, US
- Institute for Systems Genomics, University of Connecticut, Storrs CT, US
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Peng X, Wang BY, Li XY, Li YW, Lu Y, Wu GH, Ouyang L, Zou HC. [Utilization of sexual and reproductive health services and its correlates among community- based older adults in Chongqing]. Zhonghua Liu Xing Bing Xue Za Zhi 2023; 44:1880-1885. [PMID: 38129143 DOI: 10.3760/cma.j.cn112338-20230519-00315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
Objective: To investigate the utilization of sexual health services among community-based older adults in Chongqing and explore its potential correlates. Methods: A cross-sectional survey using multistage sampling among community-based older adults aged ≥50 years was conducted in Chongqing between June 2020 and December 2022. A questionnaire including information on demographic characteristics, general health, sexual health status, and sexual health services utilization was collected. Sexual health and reproductive services utilization was defined as having ever been tested for human immunodeficiency virus (HIV), or having had a male/gynecological reproductive health examination in the past year. Logistic regression was used to examine the correlates of the utilization of sexual health services. Results: A total of 794 community-based older adults participated in the study (482 were male, and 312 were female). The mean age was (62.8±8.2) years. The proportion of HIV testing was 18.0%, and the proportion of reproductive health examination was 10.1% among community-based older adults. The results of multivariate logistic regression analysis showed that the age group of 60-69 years (aOR=0.37, 95%CI: 0.18-0.76), female (aOR=11.34, 95%CI: 5.71-22.52), monthly income ≥5 000 yuan (aOR=3.05, 95%CI: 1.01-9.27), being sexual activity (aOR=4.99, 95%CI: 2.23-11.15) was significantly associated with had a reproductive health examination in the past year. Conclusions: The proportion of sexual health services utilization among older adults was low. Older sexual health education should be further strengthened, the close relationship between older adults should be correctly guided and dealt with, and the sexual health services suitable for the older population should be formulated.
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Affiliation(s)
- X Peng
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China
| | - B Y Wang
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China
| | - X Y Li
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China
| | - Y W Li
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China
| | - Y Lu
- School of Public Health, the Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China
| | - G H Wu
- Chongqing Center for Disease Control and Prevention, Chongqing 400042, China
| | - L Ouyang
- Chongqing Center for Disease Control and Prevention, Chongqing 400042, China
| | - H C Zou
- School of Public Health, Fudan University, Shanghai 200032, China
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3
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Lu Y, Peng X, Li XY, Fu LW, Tian T, Wang BY, Ouyang L, Wu GH, Zou HC. [Condom use and its correlates among community-based older adults in Chongqing]. Zhonghua Liu Xing Bing Xue Za Zhi 2023; 44:1886-1892. [PMID: 38129144 DOI: 10.3760/cma.j.cn112338-20230519-00317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
Objective: To understand the current status of condom use and its correlates among community-based older adults in Chongqing, China. Methods: Cross-sectional study based on a multistage sampling method was conducted in Chongqing from June 2020 to December 2022. The estimated sample size was 735. Through face-to-face interviews, the investigators collected the sociodemographic characteristics, sexual behavior characteristics, awareness of AIDS prevention knowledge, etc. A multivariable logistic regression model was used to explore the correlates of condom use during the last sexual behavior among the participants. Results: A total of 761 participants were included in this study, with 476 males and 285 females, whose average age was (63.8±8.2) years old, mainly in the age group of 60-69 years (44.5%). Among the participants, the rate of condom use during the last sexual behavior was 9.7%. The multivariable logistic regression analysis indicated that correlates of condom use during the last sexual behavior included urban household registration (aOR=2.34, 95%CI: 1.12-4.89), monthly income of 1 000-4 999 Yuan, and 5 000 Yuan and above (aOR=4.49, 95%CI: 1.31-15.41; aOR=16.33, 95%CI: 4.30-62.00), self-assessed sexual behavior risk as very risky/relatively risky (aOR=3.97, 95%CI: 1.40-11.31), awareness of AIDS prevention knowledge (aOR=0.36, 95%CI: 0.21-0.62). Conclusions: The rate of condom use among community-based older adults in Chongqing is low. Comprehensive intervention measures should be taken in combination with the characteristics and needs of community-based older adults to improve awareness of AIDS prevention knowledge and perception of AIDS risk and promote condom use among this population.
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Affiliation(s)
- Y Lu
- School of Public Health, the Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China
| | - X Peng
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China
| | - X Y Li
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China
| | - L W Fu
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China
| | - T Tian
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China
| | - B Y Wang
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China
| | - L Ouyang
- Chongqing Center for Disease Control and Prevention, Chongqing 400042, China
| | - G H Wu
- Chongqing Center for Disease Control and Prevention, Chongqing 400042, China
| | - H C Zou
- School of Public Health, Fudan University, Shanghai 200032, China
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Liang Q, Peng J, Xu Z, Li Z, Jiang F, Ouyang L, Wu S, Fu C, Liu Y, Liu Y, Yan Y. Pan-cancer analysis of the prognosis and immunological role of AKAP12: A potential biomarker for resistance to anti-VEGF inhibitors. Front Genet 2022; 13:943006. [PMID: 36110213 PMCID: PMC9468827 DOI: 10.3389/fgene.2022.943006] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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: 05/16/2022] [Accepted: 08/01/2022] [Indexed: 11/13/2022] Open
Abstract
The primary or acquired resistance to anti-VEGF inhibitors remains a common problem in cancer treatment. Therefore, identifying potential biomarkers enables a better understanding of the precise mechanism. Through the GEO database, three profiles associated with bevacizumab (BV) resistance to ovarian cancer, glioma, and non-small-cell lung carcinoma, respectively, were collected for the screening process, and two genes were found. A-kinase anchor protein 12 (AKAP12), one of these two genes, correlates with tumorigenesis of some cancers. However, the role of AKAP12 in pan-cancer remains poorly defined. The present study first systematically analyzed the association of AKAP12 with anti-VEGF inhibitors’ sensitivity, clinical prognosis, DNA methylation, protein phosphorylation, and immune cell infiltration across various cancers via bioinformatic tools. We found that AKAP12 was upregulated in anti-VEGF therapy-resistant cancers, including ovarian cancer (OV), glioblastoma (GBM), lung cancer, and colorectal cancer (CRC). A high AKAP12 expression revealed dismal prognoses in OV, GBM, and CRC patients receiving anti-VEGF inhibitors. Moreover, AKAP12 expression was negatively correlated with cancer sensitivity towards anti-VEGF therapy. Clinical prognosis analysis showed that AKAP12 expression predicted worse prognoses of various cancer types encompassing colon adenocarcinoma (COAD), OV, GBM, and lung squamous cell carcinoma (LUSC). Gene mutation status may be a critical cause for the involvement of AKAP12 in resistance. Furthermore, lower expression of AKAP12 was detected in nearly all cancer types, and hypermethylation may explain its decreased expression. A decreased phosphorylation of T1760 was observed in breast cancer, clear-cell renal cell carcinoma, and lung adenocarcinoma. For the immunologic significance, AKAP12 was positively related to the abundance of pro-tumor cancer-associated fibroblasts (CAFs) in various types of cancer. The results of Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis suggested that “cell junction organization” and “MAPK pathway” participated in the effect of AKAP12. Importantly, we discovered that AKAP12 expression was greatly associated with metastasis of lung adenocarcinoma as well as differential and angiogenesis of retinoblastoma through investigating the single-cell sequencing data. Our study showed that the dual role of AKAP12 in various cancers and AKAP12 could serve as a biomarker of anti-VEGF resistance in OV, GBM, LUSC, and COAD.
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Affiliation(s)
- Qiuju Liang
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Institute for Rational and Safe Medication Practices, Xiangya Hospital, Central South University, Changsha, China
| | - Jinwu Peng
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
- Department of Pathology, Xiangya Changde Hospital, Changde, China
| | - Zhijie Xu
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
| | - Zhilan Li
- Department of Pathology, Xiangya Changde Hospital, Changde, China
| | - Feng Jiang
- Department of Pathology, Xiangya Changde Hospital, Changde, China
| | - Lingzi Ouyang
- Department of Pathology, Xiangya Changde Hospital, Changde, China
| | - Shangjun Wu
- Department of Pathology, Xiangya Changde Hospital, Changde, China
| | - Chencheng Fu
- Department of Pathology, Xiangya Changde Hospital, Changde, China
| | - Ying Liu
- Department of Pathology, Xiangya Changde Hospital, Changde, China
| | - Yuanhong Liu
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Institute for Rational and Safe Medication Practices, Xiangya Hospital, Central South University, Changsha, China
| | - Yuanliang Yan
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Institute for Rational and Safe Medication Practices, Xiangya Hospital, Central South University, Changsha, China
- *Correspondence: Yuanliang Yan,
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Chu L, Yi Q, Yan Y, Peng J, Li Z, Jiang F, He Q, Ouyang L, Wu S, Fu C, Liu Y, Xu Z. A Prognostic Signature Consisting of Pyroptosis-Related Genes and SCAF11 for Predicting Immune Response in Breast Cancer. Front Med (Lausanne) 2022; 9:882763. [PMID: 35646948 PMCID: PMC9133489 DOI: 10.3389/fmed.2022.882763] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 04/25/2022] [Indexed: 12/23/2022] Open
Abstract
Pyroptosis, characterized as an inflammasome-mediated cell death pathway, may be participated in tumorigenesis and progression. However, the underlying molecular function and mechanism of pyroptosis in BRCA remain unclear. In our study, we aimed to develop a prognostic signature in BRCA based on pyroptosis-associated genes. Data was downloaded from TCGA database, and then we screened 760 female BRCA samples and 104 normal breast tissues as the training set. Seven pyroptosis-related genes (CASP9, GPX4, IL18, NLRC4, SCAF11, TIRAP, and TNF) were identified as the pyroptosis-related prognostic model for BRCA using LASSO Cox regression. We subsequently tested the prognostic value of pyroptosis-associated gene signature in a validation set, GSE 20685. Time-dependent receiver operating characteristic analysis demonstrated the credible predictive capacity of this pyroptosis-associated gene signature. The area under the curves were 0.806 at 3 years, 0.787 at 5 years, 0.775 at 8 years, and 0.793 at 10 years in the training set, and 0.824 at 5 years, 0.808 at 8 years, and 0.790 at 10 years in the validation set. Furthermore, there are currently few data on SCAF11 regulating pyroptosis. To clarify this issue, we performed integrative bioinformatics and experimental analysis. Knocking down SCAF11 possessed an anti-cancer effect in terms of inhibiting cell viability and suppressing colony-formation in in-vitro functional assays. Meanwhile, the biological functions of SCAF11 in BRCA were further validated with several algorithms, such as Xiantao tool, LinkedOmics, GEPIA2, and TISIDB. These findings indicated that the expression of SCAF11 was significantly correlated with diverse tumor-infiltrating lymphocytes (TILs), including T central memory cell (Tcm), and type 2 T helper cell (Th2), etc. Functional enrichment analysis suggested that co-expression genes of SCAF11 primarily participated in inflammation and immune-related signaling pathways, such as oxidative phosphorylation, antimicrobial humoral response, and immunoglobulin complex. Moreover, SCAF11 expression was positively correlated with several immune checkpoints, including PD-L1, B7H3, and PDCD1LG2. Taken together, this study uncovered that pyroptosis-associated gene signature might be applied as an effective independent predictor in patients with BRCA. The pyroptosis-related gene SCAF11 might play potential roles in the regulation of immune microenvironment in BRCA.
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Affiliation(s)
- Ling Chu
- Department of Pathology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Qiaoli Yi
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Yuanliang Yan
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, China
| | - Jinwu Peng
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
- Department of Pathology, Xiangya Changde Hospital, Changde, China
- Jinwu Peng
| | - Zhilan Li
- Department of Pathology, Xiangya Changde Hospital, Changde, China
| | - Feng Jiang
- Department of Pathology, Xiangya Changde Hospital, Changde, China
| | - Qingchun He
- Department of Emergency, Xiangya Hospital, Central South University, Changsha, China
- Department of Emergency, Xiangya Changde Hospital, Changde, China
| | - Lingzi Ouyang
- Department of Pathology, Xiangya Changde Hospital, Changde, China
| | - Shangjun Wu
- Department of Pathology, Xiangya Changde Hospital, Changde, China
| | - Chencheng Fu
- Department of Pathology, Xiangya Changde Hospital, Changde, China
| | - Ying Liu
- Department of Pathology, Xiangya Changde Hospital, Changde, China
| | - Zhijie Xu
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
- *Correspondence: Zhijie Xu
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Kang F, Jiang F, Ouyang L, Wu S, Fu C, Liu Y, Li Z, Tian Y, Cao X, Wang X, He Q. Potential Biological Roles of Exosomal Long Non-Coding RNAs in Gastrointestinal Cancer. Front Cell Dev Biol 2022; 10:886191. [PMID: 35602607 PMCID: PMC9114804 DOI: 10.3389/fcell.2022.886191] [Citation(s) in RCA: 1] [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: 02/28/2022] [Accepted: 03/30/2022] [Indexed: 12/13/2022] Open
Abstract
Exosomes, a type of extracellular vesicles (EVs), are secreted by almost all cells and contain many cellular constituents, such as nucleic acids, lipids, and metabolites. In addition, they play a crucial role in intercellular communication and have been proved to be involved in the development and treatment of gastrointestinal cancer. It has been confirmed that long non-coding RNAs (lncRNAs) exert a range of biological functions, such as cell metastasis, tumorigenesis, and therapeutic responses. This review mainly focused on the emerging roles and underlying molecular mechanisms of exosome-derived lncRNAs in gastrointestinal cancer in recent years. The biological roles of exosomal lncRNAs in the pathogenesis and therapeutic responses of gastrointestinal cancers were also investigated.
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Affiliation(s)
- Fanhua Kang
- Department of Pathology, Xiangya Changde Hospital, Changde, China
| | - Feng Jiang
- Department of Medicine, Xizang Minzu University, Xianyang, China
| | - Lingzi Ouyang
- Department of Pathology, Xiangya Changde Hospital, Changde, China
| | - Shangjun Wu
- Department of Pathology, Xiangya Changde Hospital, Changde, China
| | - Chencheng Fu
- Department of Pathology, Xiangya Changde Hospital, Changde, China
| | - Ying Liu
- Department of Pathology, Xiangya Changde Hospital, Changde, China
| | - Zhilan Li
- Department of Pathology, Xiangya Changde Hospital, Changde, China
| | - Yu Tian
- Department of Medicine, Xizang Minzu University, Xianyang, China
| | - Xiaolan Cao
- Department of Medicine, Xizang Minzu University, Xianyang, China
| | - Xiaoping Wang
- Department of Medicine, Xizang Minzu University, Xianyang, China
- *Correspondence: Qingchun He, ; Xiaoping Wang,
| | - Qingchun He
- Department of Emergency, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
- Department of Emergency, Xiangya Changde Hospital, Changde, China
- *Correspondence: Qingchun He, ; Xiaoping Wang,
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Ødegaard KS, Ouyang L, Ma Q, Buene G, Wan D, Elverum CW, Torgersen J, Standal T, Westhrin M. Revealing the influence of electron beam melted Ti-6Al-4V scaffolds on osteogenesis of human bone marrow-derived mesenchymal stromal cells. J Mater Sci Mater Med 2021; 32:97. [PMID: 34406475 PMCID: PMC8373740 DOI: 10.1007/s10856-021-06572-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 07/23/2021] [Indexed: 06/13/2023]
Abstract
Porous Titanium-6Aluminum-4Vanadium scaffolds made by electron beam-based additive manufacturing (AM) have emerged as state-of-the-art implant devices. However, there is still limited knowledge on how they influence the osteogenic differentiation of bone marrow-derived mesenchymal stromal cells (BMSCs). In this study, BMSCs are cultured on such porous scaffolds to determine how the scaffolds influence the osteogenic differentiation of the cells. The scaffolds are biocompatible, as revealed by the increasing cell viability. Cells are evenly distributed on the scaffolds after 3 days of culturing followed by an increase in bone matrix development after 21 days of culturing. qPCR analysis provides insight into the cells' osteogenic differentiation, where RUNX2 expression indicate the onset of differentiation towards osteoblasts. The COL1A1 expression suggests that the differentiated osteoblasts can produce the osteoid. Alkaline phosphatase staining indicates an onset of mineralization at day 7 in OM. The even deposits of calcium at day 21 further supports a successful bone mineralization. This work shines light on the interplay between AM Ti64 scaffolds and bone growth, which may ultimately lead to a new way of creating long lasting bone implants with fast recovery times.
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Affiliation(s)
- Kristin S Ødegaard
- Department of Mechanical and Industrial Engineering, Norwegian University of Science and Technology, Trondheim, Norway
| | - Lingzi Ouyang
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Qianli Ma
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Glenn Buene
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Di Wan
- Department of Mechanical and Industrial Engineering, Norwegian University of Science and Technology, Trondheim, Norway
| | - Christer W Elverum
- Department of Mechanical and Industrial Engineering, Norwegian University of Science and Technology, Trondheim, Norway
| | - Jan Torgersen
- Department of Mechanical and Industrial Engineering, Norwegian University of Science and Technology, Trondheim, Norway.
| | - Therese Standal
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Marita Westhrin
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
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8
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He M, Chen X, Luo M, Ouyang L, Xie L, Huang Z, Liu A. Suppressor of cytokine signaling 1 inhibits the maturation of dendritic cells involving the nuclear factor kappa B signaling pathway in the glioma microenvironment. Clin Exp Immunol 2020; 202:47-59. [PMID: 32516488 DOI: 10.1111/cei.13476] [Citation(s) in RCA: 5] [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: 11/22/2019] [Revised: 04/22/2020] [Accepted: 05/24/2020] [Indexed: 12/30/2022] Open
Abstract
Recurrence and diffuse infiltration challenge traditional therapeutic strategies for malignant glioma. Immunotherapy appears to be a promising approach to obtain long-term survival. Dendritic cells (DCs), the most specialized and potent antigen-presenting cells (APCs), play an important part in initiating and amplifying both the innate and adaptive immune responses against cancer cells. However, cancer cells can escape from immune surveillance by inhibiting maturation of DCs. Until the present, molecular mechanisms of maturation inhibition of DCs in the tumor microenvironment (TME) have not been fully revealed. Our study showed that pretreatment with tumor-conditioned medium (TCM) collected from supernatant of primary glioma cells significantly suppressed the maturation of DCs. TCM pretreatment significantly changed the morphology of DCs, TCM decreased the expression levels of CD80, CD83, CD86 and interleukin (IL)-12p70, while it increased the expression levels of IL-10, transforming growth factor (TGF)-β and IL-6. RNA-Seq showed that TCM pretreatment significantly increased the gene expression level of suppressor of cytokine signaling 1 (SOCS1) in DCs. suppressor of cytokine signaling 1 (SOCS1) knock-down significantly antagonized the maturation inhibition of DCs by TCM, which was demonstrated by the restoration of maturation markers. TCM pretreatment also significantly suppressed T cell viability and T helper type 1 (Th1) response, and SOCS1 knock-down significantly antagonized this suppressive effect. Further, TCM pretreatment significantly suppressed p65 nuclear translocation and transcriptional activity in DCs, and SOCS1 knock-down significantly attenuated this suppressive effect. In conclusion, our research demonstrates that TCM up-regulate SOCS1 to suppress the maturation of DCs via the nuclear factor-kappa signaling pathway.
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Affiliation(s)
- M He
- Department of Neurosurgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - X Chen
- Department of Neurosurgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - M Luo
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.,Department of Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - L Ouyang
- Department of Neurosurgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - L Xie
- Department of Neurosurgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Z Huang
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.,Department of Neurosurgery, The Eighth Affiliated Hospital, Sun Yat-Sen University, Shenzhen, China
| | - A Liu
- Department of Neurosurgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
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9
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Xu CS, Wu MT, Ouyang L, Cai ZS, Ren Y, Lu SF, Shi WZ. Preparation and Properties of Polyaminosiloxane Modified Polyester Waterborne Polyurethane. INT POLYM PROC 2020. [DOI: 10.3139/217.3842] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
In this study, a organosilicon modified waterborne polyurethane (WPU) is synthesized with polyethylene glycol 1,4-butanediol adipate ester diol (PBA) to form the soft segment, dimethylolpropionic acid (DMPA) as the hydrophilic chain extender, and isophorone diisocyanate as the hard segment to synthesize the WPU prepolymer, and aminoethyl aminopropyl dimethicone (AEAPS) as the graft chain extender. The properties of the formed WPU films are then characterized by using Fourier transform infrared spectrometry, thermogravimetric analysis, X-ray diffraction, and dynamic mechanical analysis. It is found that when the amount of AEAPS in the WPU is increased from 0 to 30 wt%, the particle size of the AEAPS modified WPU emulsion is increased from 84.8 nm to 271.9 nm and maintained high centrifugal stability. Moreover, the water absorption of the WPU film is reduced from 43.4% to 24.1%, and the hardness is enhanced from 3H to 5H, while the glass-transition temperature (Tg) of the soft segment of the modified WPU shifts from -37.4 °C to -44.3 °C, and the Tg of the hard segment shifts from 73.6 °C to 118.1 °C. Therefore, the overall performance of AEAPS modified WPU is improved.
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Affiliation(s)
- C.-S. Xu
- School of Textile Science and Engineering , Xi'an Polytechnic University, Xi'an, Shaanxi , PRC
| | - M.-T. Wu
- School of Textile Science and Engineering , Xi'an Polytechnic University, Xi'an, Shaanxi , PRC
| | - L. Ouyang
- Xi'an Wanzi Fine Chemical Technology Co. , Ltd., Xi'an , PRC
| | - Z.-S. Cai
- College of Chemistry , Chemical Engineering and Biotechnology, Donghua University, Shanghai , PRC
| | - Y. Ren
- School of Textile Science and Engineering , Xi'an Polytechnic University, Xi'an, Shaanxi , PRC
| | - S.-F. Lu
- School of Textile Science and Engineering , Xi'an Polytechnic University, Xi'an, Shaanxi , PRC
| | - W.-Z. Shi
- School of Textile Science and Engineering , Xi'an Polytechnic University, Xi'an, Shaanxi , PRC
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Zhang J, Li H, Chen Q, Wu C, Pan H, Pan Y, Zheng J, Wen J, Ouyang L, Zhou C. P2.12-22 Risk Factors for BM Incidence in SCLC: A Predictive Model for SCLC Patients on Brain Metastasis. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1767] [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: 10/25/2022]
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Li YH, Shi CY, Duan FQ, Pang Y, Li HB, Zhang LQ, Liu ZH, Ouyang L, Yue CY, Xie MC, Jiang ZJ, Xiao Y. [A clinical analysis of 10 cases with cardiac lymphoma]. Zhonghua Xue Ye Xue Za Zhi 2018; 38:102-106. [PMID: 28279032 PMCID: PMC7354164 DOI: 10.3760/cma.j.issn.0253-2727.2017.02.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
目的 分析心脏淋巴瘤的发病情况、临床特征、治疗效果及预后。 方法 收集2000年1月至2016年6月期间确诊并有心脏累及的10例淋巴瘤患者的资料,对患者的一般资料、临床表现、病理诊断、实验室检查、心脏累及方式、心脏并发症、治疗方式、疗效及预后进行分析。 结果 3 918例淋巴瘤患者中,心脏累及者10例,其中原发性心脏淋巴瘤(PCL)1例(主要累及左右心房,以心肌内多发结节包块为主),继发性心脏淋巴瘤(SCL)9例(主要为心包包块,其中出现心包积液5例,心肌肿块2例)。男性6例,女性4例,中位年龄55(19~88)岁,主要临床表现为呼吸困难7例,胸痛5例,乏力、水肿各2例。病理类型包括弥漫大B细胞淋巴瘤(DLBCL)7例,T淋巴母细胞淋巴瘤、霍奇金淋巴瘤、Burkitt淋巴瘤各1例。心脏并发症包括充血性心力衰竭7例,心律失常4例(主要为窦性心动过速、心房颤动和房室传导阻滞)。除1例高龄、一般状况差未接受治疗外,其余9例患者均接受治疗(单纯化疗4例,化疗联合放疗5例)。中位随访时间为9(1~28)个月。1例PCL患者化疗后获部分缓解(PR),无进展生存(PFS)期为6个月,总生存(OS)期为21个月。SCL患者中6例起病累及心脏者,治疗后1例获完全缓解,5例获PR,中位PFS期为5个月,中位OS期为19个月;3例病情进展累及心脏者,2例治疗后获PR,1例未治疗者死亡,中位PFS期为4个月,OS因数据截尾,未能获得。 结论 心脏淋巴瘤为少见类型,DLBCL为最常见类型,呼吸困难、胸痛为最常见临床表现,并易出现充血性心力衰竭和心律失常,治疗以系统化疗为主,总体预后差。
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Affiliation(s)
- Y H Li
- Department of Hematology, Guangzhou Military Command Guangzhou General Hospital, Guangzhou 510010, China
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Guo W, Li Y, Zhou N, Wu GH, Chang WH, Huan XP, Hui S, Tong X, Guo Y, Yu MH, Lu RR, Ouyang L, Dong LF, Li H, Li JJ, Liu XY, Liu YL, Luo C, Wei XL, Huang XD, Cui Y. [Risk factors related to HIV new infections among men who have sex with men in a cohort study]. Zhonghua Liu Xing Bing Xue Za Zhi 2018; 39:16-20. [PMID: 29374888 DOI: 10.3760/cma.j.issn.0254-6450.2018.01.003] [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
Objectives: To analyze and understand the risk factors related to HIV new infections among men who have sex with men (MSM). Methods: A longitudinal observational study among MSM was conducted to collect information on HIV related behaviors and sero-conversion. Univariate and multivariate generalized estimating equations (GEE) were used to discuss the risk factors for HIV new infection. Results: A total number of 4 305 MSM were followed during 2013-2015. Among those self-reported MSM who are seeking partners on the Interner tended to have higher proportion on receptive anal intercourse and consistent condom use during anal intercourse than the subgroups seeking their partners in gay bars or bathrooms. HIV incidence among followed MSM during the study period appeared as 4.3/100 person years, with adjusted RR (aRR) of HIV infection for receptive anal intercourse as group 2.20 (95% CI: 1.49-3.24) times than that of insertion anal intercourse group. Those who used rush-poppers (aRR=1.55, 95% CI: 1.10-2.17), unprotected anal intercourse (aRR=2.24, 95%CI: 1.62-3.08), and those with syphilis infection (aRR=2.95, 95%CI: 2.00-4.35) were also risk factors for HIV new infections. After controlling other factors, the relationship between the ways of seeking partners and HIV new infection was not statistical significant. Conclusion: Risk factors for HIV new infection among MSM appeared complex and interactive, suggesting that further studies are needed to generate tailored strategies for the prevention of HIV epidemic among MSM population.
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Affiliation(s)
- W Guo
- National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206
| | - Y Li
- Center for Disease Control and Prevention in Heilongjiang Province, Harbin 150036
| | - N Zhou
- Center for Disease Control and Prevention in Tianjin, Tianjin 300011
| | - G H Wu
- Center for Disease Control and Prevention in Chongqing, Chong qing 400042
| | - W H Chang
- Center for Disease Control and Prevention in Shaanxi Province. Xi'an 710054
| | - X P Huan
- Center for Disease Control and Prevention in Jiangsu Province, Nanjing 210009
| | - S Hui
- Center for Disease Control and Prevention in Heilongjiang Province, Harbin 150036
| | - X Tong
- Center for Disease Control and Prevention in Heilongjiang Province, Harbin 150036
| | - Y Guo
- Center for Disease Control and Prevention in Tianjin, Tianjin 300011
| | - M H Yu
- Center for Disease Control and Prevention in Tianjin, Tianjin 300011
| | - R R Lu
- Center for Disease Control and Prevention in Chongqing, Chong qing 400042
| | - L Ouyang
- Center for Disease Control and Prevention in Chongqing, Chong qing 400042
| | - L F Dong
- Center for Disease Control and Prevention in Shaanxi Province. Xi'an 710054
| | - H Li
- Center for Disease Control and Prevention in Shaanxi Province. Xi'an 710054
| | - J J Li
- Center for Disease Control and Prevention in Jiangsu Province, Nanjing 210009
| | - X Y Liu
- Center for Disease Control and Prevention in Jiangsu Province, Nanjing 210009
| | - Y L Liu
- Center for Disease Control and Prevention at Harbin City, Harbin 150056
| | - C Luo
- Center for Disease Control and Prevention at Harbin City, Harbin 150056
| | - X L Wei
- Center for Disease Control and Prevention at Xi'an City, Xi'an 710054
| | - X D Huang
- Center for Disease Control and Prevention at Xi'an City, Xi'an 710054
| | - Y Cui
- National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206
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He HJ, Lyu P, Luan RS, Liao QH, Chang ZJ, Li Y, Ouyang L, Yang J. [Influence of sociocultural factors on HIV transmission among men who have sex with men: a qualitative study]. Zhonghua Yu Fang Yi Xue Za Zhi 2017; 50:858-862. [PMID: 27686762 DOI: 10.3760/cma.j.issn.0253-9624.2016.10.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To understand how social and cultural factors influence sexual perceptions, sexual practices, and HIV transmission among men who have sex with men at selected sites in China. Methods: Qualitative methodology was used and face to face, semi-structured, in-depth interviews conducted from April 2013 to October 2015 in Sichuan, Jiangxi, Henan, Heilongjiang provinces and Chongqing municipality of China. Results: A total of 184 men who have sex with men participated in the interviews. Forty-eight originated from Henan Province, and 12, 50, 47, and 27 from Jiangxi, Heilongjiang, Sichuan provinces and Chongqing municipality, respectively. A total of 122 participants(66.3%)were under 30 years of age, 111 were college graduates(61.3%), 140 were unmarried(76.5%), and 74 were HIV positive(40.2%). Among interviewees, 6%(11 MSM)were employed at nongovernmental organizations. The main findings revealed that: Owing to sociocultural influences and social norms, most homosexual men concealed their sexual orientation and married females so as to fulfill their family obligation; this may encourage HIV transmission from a high-risk population to the general population; the main features of male homosexual behaviors, as well as those of the associated community and subculture, included hedonism, less concern about health, drug abuse, encouraging of high risk behaviors among men who have sex with men, and negative attitudes regarding HIV prevention; subgroups among MSM were found to have differential HIV transmission risk behaviors, with young men more vulnerable to infection with HIV. Conclusion: Sociocultural factors, including external socioenvironmental circumstances and internal MSM community subcultures, have adverse impacts on HIV transmission among men who have sex with men. Because there were varied behavior modes and HIV transmission risks among MSM subgroups, further study focusing on MSM subgroups is imperative, to provide a basis for more targeted and effective prevention strategies.
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Affiliation(s)
- H J He
- National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
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Li B, Shen C, Ouyang L, Yang M, Zhou L, Jiang S, Jia X. WE-FG-207B-03: Multi-Energy CT Reconstruction with Spatial Spectral Nonlocal Means Regularization. Med Phys 2016. [DOI: 10.1118/1.4957948] [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: 11/07/2022] Open
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Chen X, Ouyang L, Yan H, Jia X, Zhang Y, Wang J. WE-AB-207A-09: Optimization of the Design of a Moving Blocker for Cone-Beam CT Scatter Correction: Experimental Evaluation. Med Phys 2016. [DOI: 10.1118/1.4957762] [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: 11/07/2022] Open
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Ouyang L, Folkerts M, Hrycushko B, Lamphier R, Lee H, Yan Y, Jiang S, Timmerman R, Desai N, Abulrahman R, Gu X. TH-EF-BRB-11: Volumetric Modulated Arc Therapy for Total Body Irradiation. Med Phys 2016. [DOI: 10.1118/1.4958257] [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: 11/07/2022] Open
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Ouyang L, Folkerts M, Lee H, Ramirez E, Timmerman R, Abdulrahman R, Jiang S, Gu X. SU-E-T-812: Volumetric Modulated Arc Therapy-Total Body Irradiation (VMAT-TBI) V.s. Conventional Extended SSD-TBI (cTBI): A Dosimetric Comparisom. Med Phys 2015. [DOI: 10.1118/1.4925176] [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: 11/07/2022] Open
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Webster M, Ouyang L, Folkerts M, Tian Z, Jia X, Jiang S, Gu X. SU-E-T-253: Development of a GDPM Monte Carlo Based Quality Assurance Tool for Cyberknife. Med Phys 2015. [DOI: 10.1118/1.4924615] [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: 11/07/2022] Open
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Zhao C, Ouyang L, Wang J, Jin M. SU-E-I-08: Investigation of Deconvolution Methods for Blocker-Based CBCT Scatter Estimation. Med Phys 2015. [DOI: 10.1118/1.4924005] [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: 11/07/2022] Open
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Folkerts M, Ouyang L, Jia X, Jiang S, Gu X. SU-E-T-689: Semi-Automated GPU-Based Monte Carlo Dose Calculation for Total Body Irradiation. Med Phys 2015. [DOI: 10.1118/1.4925052] [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: 11/07/2022] Open
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Ouyang L, Luo Y, Tian M, Zhang SY, Lu R, Wang JH, Kasimu R, Li X. Plant natural products: from traditional compounds to new emerging drugs in cancer therapy. Cell Prolif 2015; 47:506-15. [PMID: 25377084 DOI: 10.1111/cpr.12143] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2014] [Accepted: 07/03/2014] [Indexed: 02/05/2023] Open
Abstract
Natural products are chemical compounds or substances produced naturally by living organisms. With the development of modern technology, more and more plant extracts have been found to be useful to medical practice. Both micromolecules and macromolecules have been reported to have the ability to inhibit tumour progression, a novel weapon to fight cancer by targeting its 10 characteristic hallmarks. In this review, we focus on summarizing plant natural compounds and their derivatives with anti-tumour properties, into categories, according to their potential therapeutic strategies against different types of human cancer. Taken together, we present a well-grounded review of these properties, hoping to shed new light on discovery of novel anti-tumour therapeutic drugs from known plant natural sources.
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Affiliation(s)
- L Ouyang
- State Key Laboratory of Biotherapy and Department of Urology, West China Hospital, Sichuan University, Chengdu, 610041, China
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Wang SY, Fu LL, Zhang SY, Tian M, Zhang L, Zheng YX, Wang JH, Huang J, Ouyang L. In silico analysis and experimental validation of active compounds from fructus Schisandrae chinensis in protection from hepatic injury. Cell Prolif 2014; 48:86-94. [PMID: 25521411 DOI: 10.1111/cpr.12157] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Accepted: 09/10/2014] [Indexed: 12/11/2022] Open
Abstract
OBJECTIVES The aim of this study was to explore mechanisms by which fructus Schisandrae chinensis (Wuweizi) is able to reveal its protective capacity against hepatocyte injury. MATERIALS AND METHODS Identification of candidate small molecular compounds was performed by text-mining, extraction and isolation, reverse-docking, network construction, molecular docking and molecular dynamics (MD) simulation. In vitro cytological examination and western blotting were used to validate efficacy of selected compounds. RESULTS We analyzed chemical composition of fructus Schisandrae chinensis and constructed protein-protein networks of key targets. Networks of miRNA-protein were constructed. Molecular docking and MD simulation results supported good interaction between selected compound 11/12 and GBA3/SHBG. Further in vitro examination divulged molecular mechanisms involved. CONCLUSIONS In silico analysis and experimental validation together demonstrated that compound 11/12 of fructus Schisandrae chinensis targetted GBA3/SHBG in hepatocytes. Hopefully this will shed light on exploration of its complex molecular mechanisms.
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Affiliation(s)
- S Y Wang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, China
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Jiang QL, Zhang S, Tian M, Zhang SY, Xie T, Chen DY, Chen YJ, He J, Liu J, Ouyang L, Jiang X. Plant lectins, from ancient sugar-binding proteins to emerging anti-cancer drugs in apoptosis and autophagy. Cell Prolif 2014; 48:17-28. [PMID: 25488051 DOI: 10.1111/cpr.12155] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Accepted: 08/28/2014] [Indexed: 02/06/2023] Open
Abstract
Ubiquitously distributed in different plant species, plant lectins are highly diverse carbohydrate-binding proteins of non-immune origin. They have interesting pharmacological activities and currently are of great interest to thousands of people working on biomedical research in cancer-related problems. It has been widely accepted that plant lectins affect both apoptosis and autophagy by modulating representative signalling pathways involved in Bcl-2 family, caspase family, p53, PI3K/Akt, ERK, BNIP3, Ras-Raf and ATG families, in cancer. Plant lectins may have a role as potential new anti-tumour agents in cancer drug discovery. Thus, here we summarize these findings on pathway- involved plant lectins, to provide a comprehensive perspective for further elucidating their potential role as novel anti-cancer drugs, with respect to both apoptosis and autophagy in cancer pathogenesis, and future therapy.
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Affiliation(s)
- Q-L Jiang
- State Key Laboratory of Biotherapy & Collaborative Innovation Center of Biotherapy, Department of Dermatology, Department of Emergency Medicine, West China Hospital, Sichuan University, Chengdu, 610041, China; School of Pharmacy and The First Affiliated Hospital of Chengdu Medical College, Chengdu Medical College, Chengdu, Sichuan, 610500, China; Sichuan Province College Key Laboratory of Structure-Specific Small Molecule Drugs, Chengdu Medical College, Chengdu, Sichuan, 610500, China
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Tong XP, Chen Y, Zhang SY, Xie T, Tian M, Guo MR, Kasimu R, Ouyang L, Wang JH. Key autophagic targets and relevant small-molecule compounds in cancer therapy. Cell Prolif 2014; 48:7-16. [PMID: 25474301 DOI: 10.1111/cpr.12154] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Accepted: 08/31/2014] [Indexed: 02/05/2023] Open
Abstract
Autophagy is a highly conserved lysosomal degradation process which can recycle unnecessary or dysfunctional cell organelles and proteins, thereby playing a crucial regulatory role in cell survival and maintenance. It has been widely accepted that autophagy regulates various pathological processes, among which cancer attracts much attention. Autophagy may either promote cancer cell survival by providing energy during unfavourable metabolic circumstance or can induce individual cancer cell death by preventing necrosis and increasing genetic instability. Thus, dual roles of autophagy may determine the destiny of cancer cells and make it an attractive target for small-molecule drug discovery. Collectively, key autophagy-related elements as potential targets, oncogenes mTORC1, class I PI3K and AKT, as well as tumour suppressor class III PI3K, Beclin-1 and p53, have been discussed. In addition, some small molecule drugs, such as rapamycin and its derivatives, rottlerin, PP242 and AZD8055 (targeting PI3K/AKT/mTORC1), spautin-1, and tamoxifen, as well as oridonin and metformin (targeting p53), can modulate autophagic pathways in different types of cancer. All these data will shed new light on targeting the autophagic process for cancer therapy, using small-molecule compounds, to fight cancer in the near future.
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Affiliation(s)
- X-P Tong
- State Key Laboratory of Biotherapy & Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China; School of Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
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Chen Y, He J, Tian M, Zhang SY, Guo MR, Kasimu R, Wang JH, Ouyang L. UNC51-like kinase 1, autophagic regulator and cancer therapeutic target. Cell Prolif 2014; 47:494-505. [PMID: 25327638 DOI: 10.1111/cpr.12145] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Accepted: 08/12/2014] [Indexed: 02/05/2023] Open
Abstract
Autophagy, the cell process of self-digestion, plays a pivotal role in maintaining energy homoeostasis and protein synthesis. When required, it causes degradation of long-lived proteins and damaged organelles, indicating that it may play a dual role in cancer, by both protecting against and promoting cell death. The autophagy-related gene (Atg) family, with more than 35 members, regulates multiple stages of the process. Serine/threonine protein kinase Atg1 in yeast, for example, can interact with other ATG gene products, functioning in autophagosome formation. One mammalian homologue of Atg1, UNC-51-like kinase 1 (ULK1) and its related complex ULK1-mAtg13-FIP200 can mediate autophagy under nutrient-deprived conditions, by protein-protein interactions and post-translational modifications. Although specific mechanisms of how ULK1 and its complex transduces upstream signals to the downstream central autophagy pathways is not fully understood, past studies have indicated that ULK1 can both suppress and promote tumour growth under different conditions. Here, we summarize some properties of ULK1 which can regulate autophagy in cancer, which may shed new light on future cancer therapy strategies, utilizing ULK1 as a potential new target.
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Affiliation(s)
- Y Chen
- State Key Laboratory of Biotherapy & Collaborative Innovation Center of Biotherapy, Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, 610041, China
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Wang J, Dang J, Ouyang L, Gu X, Pan T. Clinical Evaluation of a Novel 4D-CBCT Reconstruction Scheme Based on Simultaneous Motion Estimation and Image Reconstruction. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Royer JA, Hardin JW, McDermott S, Ouyang L, Mann JR, Ozturk OD, Bolen J. Use of state administrative data sources to study adolescents and young adults with rare conditions. J Gen Intern Med 2014; 29 Suppl 3:S732-8. [PMID: 25029984 PMCID: PMC4124125 DOI: 10.1007/s11606-014-2925-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Effective care of young people with rare conditions requires ongoing coordinated medical treatment as well as educational and social support services. However, information on treatment is often lacking due to limited data. South Carolina has a repository of comprehensive health and human service data with which individuals may be tracked across the data systems of multiple state agencies and organizations. OBJECTIVE To develop a method for studying health care of young persons with rare conditions using this repository. METHODS We identified individuals aged 15 to 24 years diagnosed during 2000-2010 with Fragile X syndrome (FXS), spina bifida (SB), or muscular dystrophy (MD) using a series of algorithms. ICD-9-CM codes were used to initially identify the cohort from medical billing data. Demographics, medical care, employment, education, and socioeconomic status data were then extracted from linked administrative sources. RESULTS We identified 1,040 individuals with these rare conditions: 125 with FXS, 695 with SB, and 220 with MD. The vast majority of the cases (95%) were identified in the Medicaid database. Half of the cohort was male, with a higher percentage in the FXS and MD groups. Sixty-two percent of the cohort was enrolled in the last year of high school. Over half of the cohort received support services from the state's disability and special-needs agency; 16% received food assistance. Thirty-eight percent were employed at some point during the study period. Forty-nine individuals with SB and 56 with MD died during the study period. CONCLUSIONS We used a linked statewide data system to study rare conditions. Strengths include the diversity of information, rigorous identification strategies, and access to longitudinal data. Despite limitations inherent to administrative data, we found that linked state data systems are valuable resources for investigating important public health questions on rare conditions.
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Affiliation(s)
- J. A. Royer
- />Division of Research and Statistics, South Carolina Budget and Control Board, 1919 Blanding Street, Columbia, SC 29201 USA
| | - J. W. Hardin
- />Department of Epidemiology and Biostatistics, University of South Carolina Arnold School of Public Health, 800 Sumter Street, Columbia, SC 29208 USA
| | - S. McDermott
- />Department of Epidemiology and Biostatistics, University of South Carolina Arnold School of Public Health, 800 Sumter Street, Columbia, SC 29208 USA
| | - L. Ouyang
- />Centers for Disease Control and Prevention National Center on Birth Defects and Developmental Disabilities, Atlanta, GA USA
| | - J. R. Mann
- />Department of Family and Preventive Medicine, University of South Carolina School of Medicine, 3209 Colonial Drive, Columbia, SC 29203 USA
| | - O. D. Ozturk
- />Moore School of Business, Department of Economics, University of South Carolina, Columbia, SC 29208 USA
| | - J. Bolen
- />Centers for Disease Control and Prevention National Center on Birth Defects and Developmental Disabilities, Atlanta, GA USA
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Fu LL, Liu J, Chen Y, Wang FT, Wen X, Liu HQ, Wang MY, Ouyang L, Huang J, Bao JK, Wei YQ. In silico analysis and experimental validation of azelastine hydrochloride (N4) targeting sodium taurocholate co-transporting polypeptide (NTCP) in HBV therapy. Cell Prolif 2014; 47:326-35. [PMID: 24965018 DOI: 10.1111/cpr.12117] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2013] [Accepted: 04/26/2014] [Indexed: 01/04/2023] Open
Abstract
OBJECTIVES The aim of this study was to explore sodium taurocholate co-transporting polypeptide (NTCP) exerting its function with hepatitis B virus (HBV) and its targeted candidate compounds, in HBV therapy. MATERIALS AND METHODS Identification of NTCP as a novel HBV target for screening candidate small molecules, was used by phylogenetic analysis, network construction, molecular modelling, molecular docking and molecular dynamics (MD) simulation. In vitro virological examination, q-PCR, western blotting and cytotoxicity studies were used for validating efficacy of the candidate compound. RESULTS We used the phylogenetic analysis of NTCP and constructed its protein-protein network. Also, we screened compounds from Drugbank and ZINC, among which five were validated for their authentication in HepG 2.2.15 cells. Then, we selected compound N4 (azelastine hydrochloride) as the most potent of them. This showed good inhibitory activity against HBsAg (IC50 = 7.5 μm) and HBeAg (IC50 = 3.7 μm), as well as high SI value (SI = 4.68). Further MD simulation results supported good interaction between compound N4 and NTCP. CONCLUSIONS In silico analysis and experimental validation together demonstrated that compound N4 can target NTCP in HepG2.2.15 cells, which may shed light on exploring it as a potential anti-HBV drug.
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Affiliation(s)
- L-L Fu
- College of Life Sciences, Key Laboratory of Bio-resources and Eco-environment, Ministry of Education, Sichuan University, Chengdu, 610064, China
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Xu Y, Bai T, Yan H, Ouyang L, Wang J, Pompos A, Zhou L, Jiang S, Jia X. TH-A-18C-04: Ultrafast Cone-Beam CT Scatter Correction with GPU-Based Monte Carlo Simulation. Med Phys 2014. [DOI: 10.1118/1.4889563] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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31
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Ouyang L, Lee H, Wang J. SU-E-J-10: A Moving-Blocker-Based Strategy for Simultaneous Megavoltage and Kilovoltage Scatter Correction in Cone-Beam Computed Tomography Image Acquired During Volumetric Modulated Arc Therapy. Med Phys 2014. [DOI: 10.1118/1.4888061] [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: 11/07/2022] Open
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Xu Y, Yan H, Ouyang L, Wang J, Zhou L, Jiang S, Jia X. WE-G-BRF-04: Robust Real-Time Volumetric Imaging Based On One Single Projection. Med Phys 2014. [DOI: 10.1118/1.4889497] [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: 11/07/2022] Open
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ZHANG H, Ouyang L, Huang J, Ma J, Chen W, Wang J. TH-A-18C-03: Noise Correlation in CBCT Projection Data and Its Application for Noise Reduction in Low-Dose CBCT. Med Phys 2014. [DOI: 10.1118/1.4889562] [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: 11/07/2022] Open
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34
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Dang J, Gu X, Ouyang L, Pan T, Wang J. TH-E-17A-03: Development and Evaluation of a 4D-CBCT Scheme Based On Simultaneous Motion Estimation and Image Reconstruction. Med Phys 2014. [DOI: 10.1118/1.4889678] [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: 11/07/2022] Open
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35
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Ouyang L, Yan H, Zhang H, Jia X, Jiang S, Wang J. SU-D-12A-07: Optimization of a Moving Blocker System for Cone-Beam Computed Tomography Scatter Correction. Med Phys 2014. [DOI: 10.1118/1.4887931] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Wang P, Ouyang L, Zheng L, Wang Z. Identifying hepatocellular carcinoma-related genes and pathways by system biology analysis. Ir J Med Sci 2014; 184:357-64. [PMID: 24744259 DOI: 10.1007/s11845-014-1119-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Accepted: 03/31/2014] [Indexed: 12/17/2022]
Abstract
BACKGROUND Previous researches have been focused on revealing the functions of each individual gene and/or pathway in the initiation, progression and maintenance of hepatocellular carcinoma (HCC). However, the mechanistic relationships among different genes and/or pathways are largely unknown. AIMS In this study, we tended to uncover the potential molecular networks and critical genes which play important roles in HCC progression. METHODS The transcriptional profiles from normal and HCC patient samples were analyzed and compared using bioinformatic methods, including differentially expressed gene (DEG) analysis, hierarchical clustering, construction of protein-protein interaction (PPI) network and GO-Elite analysis. RESULTS Initially, the normal and HCC sample data were processed and 679 most dramatic DEGs were identified. The PPI network analysis indicates the significance of multiple biological processes as well as signaling pathways in affecting liver function and HCC progression. In addition, hierarchical clustering analysis showed the most significant modules and identified the relationship between different genes, and some important genes such as FOS, IGF1, ADH4, ITGA2 and LEF1 were found to be hubs which master each individual module. CONCLUSION Our study greatly improves the understanding of the HCC development in a systematic manner and provides the potential clue for exploiting drugs which might target the most significant genes and/or signaling pathways.
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Affiliation(s)
- P Wang
- Department of General Surgery, Xiangya Hospital, Central South University, Xiangya Road 87, Changsha, Hunan, China
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Huang J, Qin Y, Liu B, Li GY, Ouyang L, Wang JH. In silico analysis and experimental validation of molecular mechanisms of salvianolic acid A-inhibited LPS-stimulated inflammation, in RAW264.7 macrophages. Cell Prolif 2013; 46:595-605. [PMID: 24033467 DOI: 10.1111/cpr.12056] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 06/03/2013] [Indexed: 11/27/2022] Open
Abstract
OBJECTIVES The aim of this study was to explore mechanisms by which salvianolic acid A (SAA) revealed its anti-inflammatory activity, in lipopolysaccharide (LPS)-stimulated RAW264.7 cells. MATERIALS AND METHODS Nitric oxide (NO) concentration was determined by the Griess reaction and cell viability was assessed by MTT assay. Interleukin-6, TNFα and interleukin-1β were determined by ELISA. The RAW264.7 cells were transfected with siRNA against p38 or HO-1. Expressions of COX-2, inducible NO synthase (iNOS), NF-κB, HO-1, p-p38 and phosphorylation of IκB kinase α/β were detected by western blotting. Potential targets of SAA were analysed by homology modelling, target prediction, protein-protein interaction prediction and docking studies. RESULTS Salvianolic acid A suppressed LPS-triggered production of NO, TNFα and Interleukin-6. It also reduced protein expression of inducible NO synthase and COX-2, and reduced translocation of NF-κB to nuclei. Moreover, SAA promoted expression of phosphorylated p38, and downstream HO-1. Zn (II) protoporphyrin IX, a specific inhibitor of HO-1, or siRNA against HO-1 could effectively increase transfer of NF-κB. SAA was predicted to target amyloid-beta protein-like protein and arachidonate 5-lipoxygenase, that could regulate p38 and HO-1. CONCLUSIONS In silico analysis and experimental validation together demonstrated that SAA exhibited its anti-inflammatory effect via the p38-HO-1 pathway in LPS-stimulated RAW264.7 cells, reduced transfer of NF-κB to the nuclei and thus reduced production of inflammatory mediators.
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Affiliation(s)
- J Huang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, China
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Ouyang L, Song K, Solberg T, Wang J. WE-G-134-03: A Moving Blocker System for Cone-Beam Computed Tomography Scatter Correction. Med Phys 2013. [DOI: 10.1118/1.4815672] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Yan Y, Mao W, Ouyang L, Solberg T. TH-C-137-01: A Graphical Software Tool for TrueBeam Developer Mode. Med Phys 2013. [DOI: 10.1118/1.4815744] [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: 11/07/2022] Open
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42
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Pompos A, Zhen H, Ouyang L, Bao Q, Stojadinovic S. SU-E-T-381: The Step-And-Shoot IMRT Overshooting Phenomena: A Novel Method to Mitigate Patient Overdosage. Med Phys 2013. [DOI: 10.1118/1.4814815] [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: 11/07/2022] Open
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Abstract
Oridonin, an active diterpenoid isolated from traditional Chinese herbal medicine, has drawn rising attention for its remarkable apoptosis- and autophagy-inducing activity and relevant molecular mechanisms in cancer therapy. Apoptosis is a well known type of cell death, whereas autophagy can play either pro-survival or pro-death roles in cancer cells. Accumulating evidence has recently revealed relationships between apoptosis and autophagy induced by oridonin; however, molecular mechanisms behind them remain to be discovered. In this review, we focus on highlighting updated research on oridonin-induced cell death signalling pathways implicated in apoptosis and autophagy, in many types of cancer. In addition, we further discuss cross-talk between apoptosis and autophagy induced by oridonin, in cancer. Taken together, these findings open new perspectives for further exploring oridonin as a potential anti-tumour agent targeting apoptosis and autophagy, in future anti-cancer therapeutics.
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Affiliation(s)
- Z Liu
- Department of Hepato-biliary Surgery, General Hospital of PLA, Beijing, China
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Fu LL, Yang Y, Xu HL, Cheng Y, Wen X, Ouyang L, Bao JK, Wei YQ, Liu B. Identification of novel caspase/autophagy-related gene switch to cell fate decisions in breast cancers. Cell Prolif 2013; 46:67-75. [PMID: 23289893 DOI: 10.1111/cpr.12005] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2012] [Revised: 08/24/2012] [Accepted: 08/24/2012] [Indexed: 02/05/2023] Open
Abstract
OBJECTIVES Caspases, a family of cysteine proteases with unique substrate specificities, contribute to apoptosis, whereas autophagy-related genes (ATGs) regulate cytoprotective autophagy or autophagic cell death in cancer. Accumulating evidence has recently revealed underlying mechanisms of apoptosis and autophagy; however, their intricate relationships still remain to be clarified. Identification of caspase/ATG switches between apoptosis and autophagy may address this problem. MATERIALS AND METHODS Identification of caspase/ATG switches was carried out using a series of elegant systems biology & bioinformatics approaches, such as network construction, hub protein identification, microarray analyses, targeted microRNA prediction and molecular docking. RESULTS We computationally constructed the global human network from several online databases and further modified it into the basic caspase/ATG network. On the basis of apoptotic or autophagic gene differential expressions, we identified three molecular switches [including androgen receptor, serine/threonine-protein kinase PAK-1 (PAK-1) and mitogen-activated protein kinase-3 (MAPK-3)] between certain caspases and ATGs in human breast carcinoma MCF-7 cells. Subsequently, we identified microRNAs (miRNAs) able to target androgen receptor, PAK-1 and MAPK-3, respectively. Ultimately, we screened a range of small molecule compounds from DrugBank, able to target the three above-mentioned molecular switches in breast cancer cells. CONCLUSIONS We have systematically identified novel caspase/ATG switches involved in miRNA regulation, and predicted targeted anti-cancer drugs. These findings may uncover intricate relationships between apoptosis and autophagy and thus provide further new clues towards possible cancer drug discovery.
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Affiliation(s)
- L-L Fu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, 610041, China
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Stojadinovic S, Ouyang L, Bao Q, Pompos A, Gu X, Solberg T. Gamma Analysis of Normalized and Un-normalized Dose Distributions. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.2157] [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: 11/17/2022]
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46
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Ouyang L, Shi Z, Zhao S, Wang FT, Zhou TT, Liu B, Bao JK. Programmed cell death pathways in cancer: a review of apoptosis, autophagy and programmed necrosis. Cell Prolif 2012. [PMID: 23030059 DOI: 10.1111/j.1365-2184.2012.00845] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Programmed cell death (PCD), referring to apoptosis, autophagy and programmed necrosis, is proposed to be death of a cell in any pathological format, when mediated by an intracellular program. These three forms of PCD may jointly decide the fate of cells of malignant neoplasms; apoptosis and programmed necrosis invariably contribute to cell death, whereas autophagy can play either pro-survival or pro-death roles. Recent bulk of accumulating evidence has contributed to a wealth of knowledge facilitating better understanding of cancer initiation and progression with the three distinctive types of cell death. To be able to decipher PCD signalling pathways may aid development of new targeted anti-cancer therapeutic strategies. Thus in this review, we present a brief outline of apoptosis, autophagy and programmed necrosis pathways and apoptosis-related microRNA regulation, in cancer. Taken together, understanding PCD and the complex interplay between apoptosis, autophagy and programmed necrosis may ultimately allow scientists and clinicians to harness the three types of PCD for discovery of further novel drug targets, in the future cancer treatment.
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Affiliation(s)
- L Ouyang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China
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47
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Ouyang L, Shi Z, Zhao S, Wang FT, Zhou TT, Liu B, Bao JK. Programmed cell death pathways in cancer: a review of apoptosis, autophagy and programmed necrosis. Cell Prolif 2012; 45:487-98. [PMID: 23030059 DOI: 10.1111/j.1365-2184.2012.00845.x] [Citation(s) in RCA: 969] [Impact Index Per Article: 80.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2012] [Accepted: 07/09/2012] [Indexed: 02/05/2023] Open
Abstract
Programmed cell death (PCD), referring to apoptosis, autophagy and programmed necrosis, is proposed to be death of a cell in any pathological format, when mediated by an intracellular program. These three forms of PCD may jointly decide the fate of cells of malignant neoplasms; apoptosis and programmed necrosis invariably contribute to cell death, whereas autophagy can play either pro-survival or pro-death roles. Recent bulk of accumulating evidence has contributed to a wealth of knowledge facilitating better understanding of cancer initiation and progression with the three distinctive types of cell death. To be able to decipher PCD signalling pathways may aid development of new targeted anti-cancer therapeutic strategies. Thus in this review, we present a brief outline of apoptosis, autophagy and programmed necrosis pathways and apoptosis-related microRNA regulation, in cancer. Taken together, understanding PCD and the complex interplay between apoptosis, autophagy and programmed necrosis may ultimately allow scientists and clinicians to harness the three types of PCD for discovery of further novel drug targets, in the future cancer treatment.
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Affiliation(s)
- L Ouyang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China
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48
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Zhang X, Chen LX, Ouyang L, Cheng Y, Liu B. Plant natural compounds: targeting pathways of autophagy as anti-cancer therapeutic agents. Cell Prolif 2012; 45:466-76. [PMID: 22765290 DOI: 10.1111/j.1365-2184.2012.00833.x] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2012] [Accepted: 05/04/2012] [Indexed: 12/16/2022] Open
Abstract
Natural compounds derived from plant sources are well characterized as possessing a wide variety of remarkable anti-tumour properties, for example modulating programmed cell death, primarily referring to apoptosis, and autophagy. Distinct from apoptosis, autophagy (an evolutionarily conserved, multi-step lysosomal degradation process in which a cell destroys long-lived proteins and damaged organelles) may play crucial regulatory roles in many pathological processes, most notably in cancer. In this review, we focus on highlighting several representative plant natural compounds such as curcumin, resveratrol, paclitaxel, oridonin, quercetin and plant lectin - that may lead to cancer cell death - for regulation of some core autophagic pathways, involved in Ras-Raf signalling, Beclin-1 interactome, BCR-ABL, PI3KCI/Akt/mTOR, FOXO1 signalling and p53. Taken together, these findings would provide a new perspective for exploiting more plant natural compounds as potential novel anti-tumour drugs, by targeting the pathways of autophagy, for future cancer therapeutics.
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Affiliation(s)
- X Zhang
- Department of Natural Products Chemistry, School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, China
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49
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Wang J, Ouyang L, Lu W, Solberg T. SU-E-I-33: Low-Dose CBCT by Iterative Image Reconstruction Using Non-Local Edge-Preserving Prior. Med Phys 2011. [DOI: 10.1118/1.3611606] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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50
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Ouyang L, Chance W, Solberg T, Wang J. MO-D-BRC-09: Dose Reduction for CBCT by Incorporating Prior Volumetric Image Information. Med Phys 2011. [DOI: 10.1118/1.3612973] [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: 11/07/2022] Open
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