1
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Shang D, Liu H, Tu Z. Pro-inflammatory cytokines mediating senescence of vascular endothelial cells in atherosclerosis. Fundam Clin Pharmacol 2023; 37:928-936. [PMID: 37154136 DOI: 10.1111/fcp.12915] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 03/27/2023] [Accepted: 05/05/2023] [Indexed: 05/10/2023]
Abstract
Atherosclerosis (AS) is a chronic inflammatory vascular disease, and aging is a major risk factor. The accumulation of senescent vascular endothelial cells (VECs) often leads to chronic inflammation and oxidative stress and induces endothelial dysfunction, contributing to the occurrence and development of AS. Senescent cells can secrete a variety of pro-inflammatory cytokines to induce the senescence of adjacent cells in a paracrine manner, leading to the transmission of signaling of cellular senescence to neighboring cells and the accumulation of senescent cells. Recent studies have demonstrated that several pro-inflammatory cytokines, including IL-17, TNF-α, and IFN-γ, can induce the senescence of VECs. This review summarizes and focuses on the pro-inflammatory cytokines that often induce the senescence of VECs and the molecular mechanisms of these pro-inflammatory cytokines inducing senescence of VECs. Targeting the senescence of VECs induced by pro-inflammatory cytokines may provide a potential and novel strategy for the prevention and treatment of AS.
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Affiliation(s)
- Dongsheng Shang
- School of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Hanqing Liu
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Zhigang Tu
- School of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu, China
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2
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Lin C, Liu P, Shi C, Qiu L, Shang D, Lu Z, Tu Z, Liu H. Therapeutic targeting of DNA damage repair pathways guided by homologous recombination deficiency scoring in ovarian cancers. Fundam Clin Pharmacol 2023; 37:194-214. [PMID: 36130021 DOI: 10.1111/fcp.12834] [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: 03/04/2022] [Revised: 07/23/2022] [Accepted: 09/20/2022] [Indexed: 12/01/2022]
Abstract
The susceptibility of cells to DNA damage and their DNA repair ability are crucial for cancer therapy. Homologous recombination is one of the major repairing mechanisms for DNA double-strand breaks. Approximately half of ovarian cancer (OvCa) cells harbor homologous recombination deficiency (HRD). Considering that HRD is a major hallmark of OvCas, scholars proposed HRD scoring to evaluate the HRD degree and guide the choice of therapeutic strategies for OvCas. In the last decade, synthetic lethal strategy by targeting poly (ADP-ribose) polymerase (PARP) in HR-deficient OvCas has attracted considerable attention in view of its favorable clinical effort. We therefore suggested that the uses of other DNA damage/repair-targeted drugs in HR-deficient OvCas might also offer better clinical outcome. Here, we reviewed the current small molecule compounds that targeted DNA damage/repair pathways and discussed the HRD scoring system to guide their clinical uses.
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Affiliation(s)
- Chunxiu Lin
- School of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Peng Liu
- School of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Chaowen Shi
- School of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Lipeng Qiu
- School of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Dongsheng Shang
- School of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Ziwen Lu
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Zhigang Tu
- School of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Hanqing Liu
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, China
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3
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Shang D, Li Z, Tan X, Liu H, Tu Z. Inhibitory effects and molecular mechanisms of ginsenoside Rg1 on the senescence of hematopoietic stem cells. Fundam Clin Pharmacol 2022; 37:509-517. [PMID: 36582074 DOI: 10.1111/fcp.12863] [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] [Received: 09/23/2022] [Revised: 12/09/2022] [Accepted: 12/23/2022] [Indexed: 12/31/2022]
Abstract
Hematopoietic stem cells (HSCs) produce all blood cell lineages and maintain life-long hematopoiesis. However, the self-renewal ability and differentiation capacity of HSCs reduces with age. The senescence of HSCs can lead to the imbalance of hematopoietic homeostasis and immune disorder and induce a variety of age-related diseases. Recent studies have shown that therapeutic interventions targeting the senescence of HSCs may prevent disease progression. Ginsenoside Rg1 (Rg1), extracted from roots or stems of ginseng, has beneficial antiaging activities. It has been reported that Rg1 can inhibit the senescence of HSCs. Here, we reviewed recent advances of Rg1 in inhibiting the senescence of HSCs and discussed related molecular mechanisms. Bioinformatics and network databases have been widely applied to drug discoveries. Here, we predicted potential antiaging targets of Rg1 explored by bioinformatic methods, which may help discover new targets of Rg1 and provide novel strategies for delaying the aging process of HSCs.
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Affiliation(s)
- Dongsheng Shang
- School of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Zhihuan Li
- School of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Xiaoli Tan
- School of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Hanqing Liu
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Zhigang Tu
- School of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu, China
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4
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Shang D, Zhou T, Zhuang X, Wu Y, Liu H, Tu Z. Molecular dissection on inhibition of Ras-induced cellular senescence by small t antigen of SV40. Cell Mol Life Sci 2022; 79:242. [DOI: 10.1007/s00018-022-04275-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 03/21/2022] [Accepted: 03/25/2022] [Indexed: 11/28/2022]
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5
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Shang D, Liu SM. [Clinical manifestation of odontogenic fibroma associated with tuberous sclerosis complex: a case report]. Zhonghua Kou Qiang Yi Xue Za Zhi 2022; 57:186-188. [PMID: 35152656 DOI: 10.3760/cma.j.cn112144-20210524-00262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- D Shang
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - S M Liu
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
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6
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Li X, Shang D, Shen H, Song J, Hao G, Tian Y. Corrigendum to “ZSCAN16 promotes proliferation, migration and invasion of bladder cancer via regulating NF-kB, AKT, mTOR, P38 and other genes” [Biomed. Pharmacother. 126 (2020) 110066]. Pharmacotherapy 2020; 130:110858. [DOI: 10.1016/j.biopha.2020.110858] [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: 10/23/2022]
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Shang D, Hong Y, Xie W, Tu Z, Xu J. Interleukin-1β Drives Cellular Senescence of Rat Astrocytes Induced by Oligomerized Amyloid β Peptide and Oxidative Stress. Front Neurol 2020; 11:929. [PMID: 33013631 PMCID: PMC7493674 DOI: 10.3389/fneur.2020.00929] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 07/17/2020] [Indexed: 01/10/2023] Open
Abstract
Background: Alzheimer's disease (AD) is the leading cause of dementia. With no reliable treatment that delays or reverses the progress of AD, effective medical drugs, and interventions for AD treatment are in urgent need. Clinical success for patients thus relies on gaining a clearer understanding of AD pathogenesis to feed the development of novel and potent therapy strategies. It is well-established that inflammatory processes are involved in the pathology of AD, and recent studies implicated senescence of glial cells as an important player in the progression of AD. Methods: We did a preliminary screen in rat astrocytes for the five most abundant inflammatory factors in neuroinflammation, namely IL-1β, IL-6, IL-8, TGF-β1, and TNF-α, and found that IL-1β could efficiently induce cellular senescence. After that, SA-β-gal staining, immunofluorescence, ELISA, qRT-PCR, and immunoblotting were used to explore the underlying mechanism through which IL-1β mediates cellular senescence of rat astrocytes. Results: IL-1β-induced cellular senescence of rat astrocytes was accompanied by increased total and phosphorylated tau. Further experiments showed that both oligomerized amyloid β (Aβ) and H2O2 treatment can induce cellular senescence in rat astrocytes and increase the production and secretion of IL-1β from these cells. Subsequent mechanistic study revealed that activation of NLRP3 mediates Aβ and H2O2-induced maturation and secretion of IL-1β. Conclusion: Our results suggest that IL-1β mediates senescence in rat astrocytes induced by several common adverse stimuli in AD, implicating IL-1β and NLRP3 as valuable diagnostic biomarkers and therapeutic targets for AD.
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Affiliation(s)
- Dongsheng Shang
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Yin Hong
- China National Clinical Research Center for Neurological Diseases (NCRC-ND), Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Wangwang Xie
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Zhigang Tu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Jun Xu
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
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Liu P, Lu Z, Wu Y, Shang D, Zhao Z, Shen Y, Zhang Y, Zhu F, Liu H, Tu Z. Cellular Senescence-Inducing Small Molecules for Cancer Treatment. Curr Cancer Drug Targets 2020; 19:109-119. [PMID: 29848278 DOI: 10.2174/1568009618666180530092825] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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: 08/30/2017] [Revised: 02/10/2018] [Accepted: 03/07/2018] [Indexed: 01/22/2023]
Abstract
Recently, the chemotherapeutic drug-induced cellular senescence has been considered a promising anti-cancer approach. The drug-induced senescence, which shows both similar and different hallmarks from replicative and oncogene-induced senescence, was regarded as a key determinant of tumor response to chemotherapy in vitro and in vivo. To date, an amount of effective chemotherapeutic drugs that can evoke senescence in cancer cells have been reported. The targets of these drugs differ substantially, including senescence signaling pathways, DNA replication process, DNA damage pathways, epigenetic modifications, microtubule polymerization, senescence-associated secretory phenotype (SASP), and so on. By summarizing senescence-inducing small molecule drugs together with their specific traits and corresponding mechanisms, this review is devoted to inform scientists to develop novel therapeutic strategies against cancer through inducing senescence.
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Affiliation(s)
- Peng Liu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Ziwen Lu
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Yanfang Wu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Dongsheng Shang
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China.,School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Zhicong Zhao
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Yanting Shen
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Yafei Zhang
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Feifei Zhu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Hanqing Liu
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Zhigang Tu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
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Shang D, Sun D, Shi C, Xu J, Shen M, Hu X, Liu H, Tu Z. Activation of epidermal growth factor receptor signaling mediates cellular senescence induced by certain pro-inflammatory cytokines. Aging Cell 2020; 19:e13145. [PMID: 32323422 PMCID: PMC7253070 DOI: 10.1111/acel.13145] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [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: 08/15/2019] [Revised: 02/14/2020] [Accepted: 03/10/2020] [Indexed: 02/06/2023] Open
Abstract
It is well established that inflammation in the body promotes organism aging, and recent studies have attributed a similar effect to senescent cells. Considering that certain pro‐inflammatory cytokines can induce cellular senescence, systematically evaluating the effects of pro‐inflammatory cytokines in cellular senescence is an important and urgent scientific problem, especially given the ongoing surge in aging human populations. Treating IMR90 cells and HUVECs with pro‐inflammatory cytokines identified six factors able to efficiently induce cellular senescence. Of these senescence‐inducing cytokines, the activity of five (namely IL‐1β, IL‐13, MCP‐2, MIP‐3α, and SDF‐1α) was significantly inhibited by treatment with cetuximab (an antibody targeting epidermal growth factor receptor [EGFR]), gefitinib (a small molecule inhibitor of EGFR), and EGFR knockdown. In addition, treatment with one of the senescence‐inducing cytokines, SDF‐1α, significantly increased the phosphorylation levels of EGFR, as well as Erk1/2. These results suggested that pro‐inflammatory cytokines induce cellular senescence by activating EGFR signaling. Next, we found that EGF treatment could also induce cellular senescence of IMR90 cells and HUVECs. Mechanically, EGF induced cellular senescence via excessive activation of Ras and the Ras‐BRaf‐Erk1/2 signaling axis. Moreover, EGFR activation induced IMR90 cells to secrete certain senescence‐associated secretory phenotype factors (IL‐8 and MMP‐3). In summary, we report that certain pro‐inflammatory cytokines induce cellular senescence through activation of the EGFR‐Ras signaling pathway. Our study thus offers new insight into a long‐ignored mechanism by which EGFR could regulate cellular senescence and suggests that growth signals themselves may catalyze aging under certain conditions.
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Affiliation(s)
- Dongsheng Shang
- School of Pharmacy Jiangsu University Zhenjiang China
- Institute of Life Sciences Jiangsu University Zhenjiang China
| | - Danlin Sun
- Institute of Life Sciences Jiangsu University Zhenjiang China
| | - Chunyan Shi
- Obstetrics and Gynecology Department Affiliated Hospital of Jiangsu University Zhenjiang China
| | - Jun Xu
- Department of Cognitive Neurology China National Clinical Research Center for Neurological Diseases (NCRC‐ND) Beijing Tiantan Hospital Capital Medical University Beijing China
| | - Mingxiang Shen
- Institute of Life Sciences Jiangsu University Zhenjiang China
| | - Xing Hu
- Obstetrics and Gynecology Department Affiliated Hospital of Jiangsu University Zhenjiang China
| | - Hanqing Liu
- School of Pharmacy Jiangsu University Zhenjiang China
| | - Zhigang Tu
- Institute of Life Sciences Jiangsu University Zhenjiang China
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10
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Shang D, Ma L. [Ectrodactyly ectodermal dysplasia-cleft lip/palate syndrome: a case report]. Zhonghua Kou Qiang Yi Xue Za Zhi 2019; 54:770-772. [PMID: 31683385 DOI: 10.3760/cma.j.issn.1002-0098.2019.11.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- D Shang
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081 China (Shang Duo is working on the Department of Oral Maxillofacial Surgery, Affiliated Hospital of Inner Mongolia Medical University, Huhhot 010059, China)
| | - L Ma
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
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11
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Liu P, Lu Z, Liu L, Li R, Liang Z, Shen M, Xu H, Ren D, Ji M, Yuan S, Shang D, Zhang Y, Liu H, Tu Z. NOD-like receptor signaling in inflammation-associated cancers: From functions to targeted therapies. Phytomedicine 2019; 64:152925. [PMID: 31465982 DOI: 10.1016/j.phymed.2019.152925] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 04/06/2019] [Accepted: 04/08/2019] [Indexed: 05/22/2023]
Abstract
BACKGROUND Recently, many studies have reported that some botanicals and natural products were able to regulate NOD-like receptor signaling. NOD-like receptors (NLRs) have been established as crucial regulators in inflammation-associated tumorigenesis, angiogenesis, cancer cell stemness and chemoresistance. NLRs specifically sense pathogen-associated molecular patterns and respond by activating other signaling regulators, including Rip2 kinase, NF-κB, MAPK and ASC/caspase-1, leading to the secretion of various cytokines. PURPOSE The aim of this article is to review the molecular mechanisms of NOD-like receptor signaling in inflammation-associated cancers and the NLRs-targeted botanicals and synthetic small molecules in cancer intervention. RESULTS Aberrant activation of NLRs occurs in various cancers, orchestrating the tissue microenvironment and potentiating neoplastic risk. Blocking NLR inflammasome activation by botanicals or synthetic small molecules may be a valuable way to prevent cancer progression. Moreover, due to the roles of NLRs in regulating cytokine production, NLR signaling may be correlated with senescence-associated secretory phenotype. CONCLUSION In this review, we discuss how NLR signaling is involved in inflammation-associated cancers, and highlight the NLR-targeted botanicals and synthetic small molecules in cancer intervention.
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Affiliation(s)
- Peng Liu
- Institute of Life Sciences, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu 212013, China
| | - Ziwen Lu
- School of Pharmacy, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu 212013, China
| | - Lanlan Liu
- Institute of Life Sciences, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu 212013, China
| | - Ruyan Li
- Institute of Life Sciences, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu 212013, China
| | - Zhiquan Liang
- School of Pharmacy, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu 212013, China
| | - Mingxiang Shen
- Institute of Life Sciences, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu 212013, China
| | - Han Xu
- School of Pharmacy, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu 212013, China
| | - Dewan Ren
- School of Pharmacy, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu 212013, China
| | - Mengchen Ji
- Institute of Life Sciences, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu 212013, China
| | - Sirui Yuan
- School of Pharmacy, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu 212013, China
| | - Dongsheng Shang
- School of Pharmacy, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu 212013, China
| | - Yibang Zhang
- School of Pharmacy, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu 212013, China
| | - Hanqing Liu
- School of Pharmacy, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu 212013, China.
| | - Zhigang Tu
- Institute of Life Sciences, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu 212013, China.
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Guo M, Zhang Y, Shang D, Yu J, Yue J. 18F-Fluorodeoxyglucose Positron Emission Tomography May not Quantify Aseptic Radiation-induced Lung Inflammation. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1385] [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: 10/26/2022]
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13
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Qiu L, Xu H, Ji M, Shang D, Lu Z, Wu Y, Tu Z, Liu H. Circular RNAs in hepatocellular carcinoma: Biomarkers, functions and mechanisms. Life Sci 2019; 231:116660. [PMID: 31319086 DOI: 10.1016/j.lfs.2019.116660] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 07/03/2019] [Accepted: 07/14/2019] [Indexed: 02/07/2023]
Abstract
Hepatocellular carcinoma (HCC), a leading cause of cancer-related death with high invasive and metastatic potential, has a low survival rate. To improve the survival and quality of life in HCC patients, it is urgently needed to explore novel biomarkers for early diagnosis and prognosis of HCC, as well as therapeutic strategies. Circular RNAs (circRNAs) are a class of highly conserved, stable and abundant non-coding RNAs (ncRNAs) that can regulate gene expression at transcriptional or post-transcriptional levels. Recently, some circRNAs are identified to be potential biomarkers for HCC diagnosis and prognosis. Furthermore, some circRNAs are found to play oncogenic or suppressive roles in HCC progression by regulating various biological processes, including cell proliferation, migration, invasion and metastasis, epithelial-mesenchymal transition (EMT), as well as apoptosis. In this review, we summarize recent findings of deregulated circRNAs, their functions and molecular mechanisms in HCC, and discuss their potential roles as diagnostic biomarkers, prognostic biomarkers, as well as therapeutic targets for HCC.
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Affiliation(s)
- Lipeng Qiu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Han Xu
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Mengchen Ji
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Dongsheng Shang
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Ziwen Lu
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Yihang Wu
- Department of Pharmacy, College of Life Sciences, China Jiliang University, Hangzhou, Zhejiang 310018, China
| | - Zhigang Tu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Hanqing Liu
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
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14
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Liang Z, Lu Z, Zhang Y, Shang D, Li R, Liu L, Zhao Z, Zhang P, Lin Q, Feng C, Zhang Y, Liu P, Tu Z, Liu H. Targeting Membrane Receptors of Ovarian Cancer Cells for Therapy. Curr Cancer Drug Targets 2018; 19:449-467. [PMID: 30306870 DOI: 10.2174/1568009618666181010091246] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 08/31/2018] [Accepted: 09/29/2018] [Indexed: 01/02/2023]
Abstract
Ovarian cancer is a leading cause of death worldwide from gynecological malignancies, mainly because there are few early symptoms and the disease is generally diagnosed at an advanced stage. In addition, despite the effectiveness of cytoreductive surgery for ovarian cancer and the high response rates to chemotherapy, survival has improved little over the last 20 years. The management of patients with ovarian cancer also remains similar despite studies showing striking differences and heterogeneity among different subtypes. It is therefore clear that novel targeted therapeutics are urgently needed to improve clinical outcomes for ovarian cancer. To that end, several membrane receptors associated with pivotal cellular processes and often aberrantly overexpressed in ovarian cancer cells have emerged as potential targets for receptor-mediated therapeutic strategies including specific agents and multifunctional delivery systems based on ligand-receptor binding. This review focuses on the profiles and potentials of such strategies proposed for ovarian cancer treatment and imaging.
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Affiliation(s)
- Zhiquan Liang
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Ziwen Lu
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Yafei Zhang
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Dongsheng Shang
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Ruyan Li
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Lanlan Liu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Zhicong Zhao
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Peishan Zhang
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Qiong Lin
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Chunlai Feng
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Yibang Zhang
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Peng Liu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Zhigang Tu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Hanqing Liu
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu 212013, China
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15
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Ruan L, Shen Y, Lu Z, Shang D, Zhao Z, Lu Y, Wu Y, Zhang Y, Tu Z, Liu H. Roles of partitioning-defective protein 6 (Par6) and its complexes in the proliferation, migration and invasion of cancer cells. Clin Exp Pharmacol Physiol 2018; 44:909-913. [PMID: 28590507 DOI: 10.1111/1440-1681.12794] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Revised: 05/30/2017] [Accepted: 06/01/2017] [Indexed: 12/12/2022]
Abstract
A pivotal regulator of cell polarity and homeostasis, partitioning-defective protein 6 (Par6) forms multicomponent complexes that not only regulate cell polarity and stabilize cell morphology, but have also been demonstrated to participate in the proliferation, migration and invasion of cancer cells. The transforming growth factor (TGF)-β and extracellular signal-regulated kinase (Erk) 1/2 pathways are the most thoroughly studied pathways involving Par6 in many cancers. Aurothiomalate has been used to disrupt the interaction between Par6 and atypical protein kinase C within the multicomponent complexes, and has been shown to effectively block transformed growth and metastasis in vitro and/or in vivo in a variety of cancers, including pancreatic, prostate and lung cancers, as well as alveolar rhabdomyosarcoma. It is likely that with further revelations regarding the critical roles of Par6 in cancer initiation, progression and metastasis, targeted therapies against Par6 will be discovered and prove effective preclinically, and hopefully clinically, in cancer treatment.
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Affiliation(s)
- Lingling Ruan
- School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Yanting Shen
- School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Ziwen Lu
- School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Dongsheng Shang
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Zhicong Zhao
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Yongjin Lu
- School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Yanfang Wu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Yafei Zhang
- School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Zhigang Tu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Hanqing Liu
- School of Pharmacy, Jiangsu University, Zhenjiang, China
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Shang D, Wu Y, Ding Y, Lu Z, Shen Y, Zhu F, Liu H, Zhu C, Tu Z. Identification of a pyridine derivative inducing senescence in ovarian cancer cell lines via P21 activation. Clin Exp Pharmacol Physiol 2017; 45:452-460. [DOI: 10.1111/1440-1681.12891] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 10/04/2017] [Accepted: 10/26/2017] [Indexed: 01/15/2023]
Affiliation(s)
- Dongsheng Shang
- School of Pharmacy; Jiangsu University; Zhenjiang China
- Institute of Life Sciences; Jiangsu University; Zhenjiang China
| | - Yanfang Wu
- Institute of Life Sciences; Jiangsu University; Zhenjiang China
| | - Ya Ding
- School of Chemistry & Chemical Engineering; Jiangsu University; Zhenjiang China
| | - Ziwen Lu
- School of Pharmacy; Jiangsu University; Zhenjiang China
| | - Yanting Shen
- School of Pharmacy; Jiangsu University; Zhenjiang China
| | - Feifei Zhu
- Institute of Life Sciences; Jiangsu University; Zhenjiang China
| | - Hanqing Liu
- School of Pharmacy; Jiangsu University; Zhenjiang China
| | - Chunyin Zhu
- School of Chemistry & Chemical Engineering; Jiangsu University; Zhenjiang China
| | - Zhigang Tu
- Institute of Life Sciences; Jiangsu University; Zhenjiang China
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Liu H, Zhang P, Shang D, Shi X, Lu Z, Liu L, Shen M, Tu Z. TARGETING HEAT SHOCK PROTEIN 90 AND ITS DOWNSTREAM SIGNALING HUBS FOR THE TREATMENT OF MANTLE CELL LYMPHOMA. Hematol Oncol 2017. [DOI: 10.1002/hon.2439_171] [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: 11/07/2022]
Affiliation(s)
- H. Liu
- School of Pharmacy; Jiangsu University; Zhenjiang China
| | - P. Zhang
- School of Pharmacy; Jiangsu University; Zhenjiang China
| | - D. Shang
- Institute of Life Sciences; Jiangsu University; Zhenjiang China
| | - X. Shi
- Department of Hematology; Affiliated Hospital of Jiangsu University; Zhenjiang China
| | - Z. Lu
- School of Pharmacy; Jiangsu University; Zhenjiang China
| | - L. Liu
- Institute of Life Sciences; Jiangsu University; Zhenjiang China
| | - M. Shen
- Institute of Life Sciences; Jiangsu University; Zhenjiang China
| | - Z. Tu
- Institute of Life Sciences; Jiangsu University; Zhenjiang China
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18
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Wang W, Qu X, Dang X, Shang D, Yang L, Li Y, Xu D, Martin JG, Hamid Q, Liu J, Chang Y. Human β-defensin-3 induces IL-8 release and apoptosis in airway smooth muscle cells. Clin Exp Allergy 2017; 47:1138-1149. [PMID: 28437599 DOI: 10.1111/cea.12943] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 04/12/2017] [Accepted: 04/14/2017] [Indexed: 12/23/2022]
Abstract
BACKGROUND Human airway smooth muscle cells (ASMCs) may have a pro-inflammatory role through the release of inflammatory mediators. Increasing evidence indicates that human β-defensins (HBDs) are related to pathogenesis of asthma. OBJECTIVES To examine the plasma level of HBD-1, HBD-2 and HBD-3 in asthmatic patients and the expression of their mouse orthologues in the lung tissue of a mouse model of chronic severe asthma. Further to investigate the effect of HBD-3 on the release of the pro-inflammatory cytokine IL-8 and to explore the mechanisms. METHODS The plasma levels of HBD-1, HBD-2 and HBD-3 from 34 healthy controls and 25 asthmatic patients were determined by ELISA. The expression of mouse β-defensins MBD-1, MBD-3 and MBD-14 in the lung tissue of asthmatic mice was detected by Western blot. The ASMCs were cultured with HBD-3 for 24 hour, and then the supernatant level of IL-8 was evaluated by ELISA and the cell viability was examined by WST-1 assay. The signalling pathway was investigated with blocking antibodies or pharmacological inhibitors. RESULTS The plasma levels of HBD-1 and HBD-3 were elevated in asthmatic patients, and the expression of MBD-14, the mouse orthologue for HBD-3, was increased in asthmatic mice. HBD-3-induced IL-8 production in a CCR6 receptor-specific manner and was dependent on multiple signalling pathways. Moreover, HBD-3-induced cell apoptosis concurrently, which was dependent on the ERK1/2 MAPK pathway. Mitochondrial ROS regulated both HBD-3-induced IL-8 production and cell apoptosis. CONCLUSIONS AND CLINICAL RELEVANCE These observations provide clear evidence of an important new mechanism for the promotion of airway inflammation and tissue remodelling with potential relevance for the treatment of asthma.
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Affiliation(s)
- W Wang
- Center for Translational Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - X Qu
- Center for Translational Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - X Dang
- Department of Respiration, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, China
| | - D Shang
- Department of Respiration, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, China
| | - L Yang
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - Y Li
- Center for Translational Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - D Xu
- Center for Translational Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - J G Martin
- Meakins-Christie Laboratories and Respiratory Division, The Research Institute of the McGill University Health Centre and Department of Medicine, McGill University, Montreal, Quebec, Canada
| | - Q Hamid
- Meakins-Christie Laboratories and Respiratory Division, The Research Institute of the McGill University Health Centre and Department of Medicine, McGill University, Montreal, Quebec, Canada.,College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
| | - J Liu
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - Y Chang
- Center for Translational Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China
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19
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Lian C, Ruan L, Shang D, Wu Y, Lu Y, Lü P, Yang Y, Wei Y, Dong X, Ren D, Chen K, Liu H, Tu Z. Heparin-Binding Epidermal Growth Factor-Like Growth Factor as a Potent Target for Breast Cancer Therapy. Cancer Biother Radiopharm 2016; 31:85-90. [DOI: 10.1089/cbr.2015.1956] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Affiliation(s)
- Caixia Lian
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Lingling Ruan
- School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Dongsheng Shang
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Yanfang Wu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Yongjin Lu
- School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Peng Lü
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Yuhua Yang
- School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Yajun Wei
- School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Xiaojing Dong
- School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Dewan Ren
- School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Keping Chen
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Hanqing Liu
- School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Zhigang Tu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
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20
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Liu H, Liang Z, Zhang P, Zhao J, Ruan L, Lu Y, Shang D, Sun Y, Tu Z. Abstract B14: Targeting heat shock protein 90 with ganetespib for the treatment of lymphoma. Mol Cancer Res 2016. [DOI: 10.1158/1557-3125.metca15-b14] [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: 11/16/2022]
Abstract
Abstract
Effective treatments for lymphoma remain a serious unmet medical need: the incidence of lymphoma continues to rise, and lyphoma tumors can relapse in patients who initially respond to treatment. Heat shock protein 90 (HSP90) has become an attractive therapeutic target in treating many cancers including blood cancers. In our study, we show that ganetespib, a clinically promising and actively investigated second-generation HSP90 inhibitor, dramatically reduced growth of a couple of different kinds of lymphoma, such as mantle cell lymphoma and Burkitt's lymphoma in a dose-dependent manner. It induced G2/M cell-cycle arrest and apoptosis in all studied cell lines, such as Ramos, Jeko-1, Granta-519, Raji, etc. Ganetespib significantly inhibited growth of xenograft tumors in vivo as a single agent or in combination with doxorubicin. Results of H&E staining, TUNEL assays, and immunohistochemistry staining of Ki-67 revealed significant differences in ganetespib-treated tumors. A panel of signaling network proteins with a hub of HSP90 were screened for the effects of ganetespib and these pathways were studied mechanistically. In summary, our data suggest that ganetespib can be potentially used for the molecularly targeted therapy of lyphoma patients.
Acknowledgments: This work was supported by the Jiangsu Specially-Appointed Professor Program (to H. Liu); Jiangsu Recruitment Program of Leading Creative and Entrepreneurial Talents (to H. Liu and Z. Tu); National Natural Science Foundation 81402145 (to H. Liu) and 31471294 (to Z. Tu); Natural Science Foundation of Jiangsu Province BK20140572 (to H. Liu); Start-up Scientific Research Fund for the Returned Oversea Scholars from Chinese Ministry of Education (to Z. Tu); Senior Talent Start-up Funds of Jiangsu University 14JDG050 (to H. Liu) and 14JDG011 (to Z. Tu); Priority Academic Program Development of Jiangsu Higher Education Institutions (to School of Pharmacy and Institute of Life Sciences of Jiangsu University).
Note: This abstract was not presented at the conference.
Citation Format: Hanqing Liu, Zhiquan Liang, peishan Zhang, Jingjing Zhao, Lingling Ruan, Yongjin Lu, Dongsheng Shang, Ying Sun, Zhigang Tu. Targeting heat shock protein 90 with ganetespib for the treatment of lymphoma. [abstract]. In: Proceedings of the AACR Special Conference: Metabolism and Cancer; Jun 7-10, 2015; Bellevue, WA. Philadelphia (PA): AACR; Mol Cancer Res 2016;14(1_Suppl):Abstract nr B14.
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Affiliation(s)
- Hanqing Liu
- 1School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, China,
| | - Zhiquan Liang
- 1School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, China,
| | - peishan Zhang
- 1School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, China,
| | - Jingjing Zhao
- 1School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, China,
| | - Lingling Ruan
- 1School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, China,
| | - Yongjin Lu
- 1School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, China,
| | - Dongsheng Shang
- 2Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Ying Sun
- 1School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, China,
| | - Zhigang Tu
- 2Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu, China
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Tu Z, Liu H, Zhao J, Zhang P, Liang Z, Ruan L, Lu Y, Shang D, Sun Y, Xu L, Chen K, Danzeng Q. Abstract 2614: Targeting heat shock protein 90 with Ganetespib for the treatment of lymphoma. Cancer Res 2015. [DOI: 10.1158/1538-7445.am2015-2614] [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: 11/16/2022]
Abstract
Abstract
Effective treatments for lymphoma remain a serious unmet medical need: the incidence of lymphoma continues to rise, and lymphoma tumors can relapse in patients who initially respond to treatment. Heat shock protein 90 (HSP90) has become an attractive therapeutic target in treating many many cancers, including blood cancers. In our study, we show that ganetespib, a clinically promising and actively investigated second-generation HSP90 inhibitor, dramatically reduced growth of a couple of different kinds of lymphoma, such as mantle cell lymphoma and Burkitt's lymphoma in a dose-dependent manner. It induced G2/M cell-cycle arrest and apoptosis in all studied cell lines, such as Ramos, Jeko-1, Granta-519, Raji, etc. Ganetespib significantly inhibited growth of xenograft tumors in vivo as a single agent or in combination with doxorubicin. Results of H&E staining, TUNEL assays, and immunohistochemistry staining of Ki-67 revealed significant differences in ganetespib-treated tumors. Mechanistically, ganetespib caused pronounced decrease of expression of classic HSP90 client proteins. In summary, our data suggest that ganetespib can be potentially used for the molecularly targeted therapy of lymphoma patients.
Citation Format: Zhigang Tu, Hanqing Liu, Jingjing Zhao, Peishan Zhang, Zhiquan Liang, Lingling Ruan, Yongjin Lu, Dongsheng Shang, Ying Sun, Lili Xu, Keping Chen, Quji Danzeng. Targeting heat shock protein 90 with Ganetespib for the treatment of lymphoma. [abstract]. In: Proceedings of the 106th Annual Meeting of the American Association for Cancer Research; 2015 Apr 18-22; Philadelphia, PA. Philadelphia (PA): AACR; Cancer Res 2015;75(15 Suppl):Abstract nr 2614. doi:10.1158/1538-7445.AM2015-2614
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Affiliation(s)
| | | | | | | | | | | | | | | | - Ying Sun
- Jiangsu University, Zhenjiang, China
| | - Lili Xu
- Jiangsu University, Zhenjiang, China
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Liu J, Yan Q, Luo F, Shang D, Wu D, Zhang H, Shang X, Kang X, Abdo M, Liu B, Ma Y, Xin Y. Acute cholecystitis associated with infection of Enterobacteriaceae from gut microbiota. Clin Microbiol Infect 2015; 21:851.e1-9. [PMID: 26025761 DOI: 10.1016/j.cmi.2015.05.017] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2014] [Revised: 03/03/2015] [Accepted: 05/12/2015] [Indexed: 02/08/2023]
Abstract
Acute cholecystitis (AC) is one of the most common surgical diseases. Bacterial infection accounts for 50% to 85% of the disease's onset. Since there is a close relationship between the biliary system and the gut, the aims of this study were to characterize and determine the influence of gut microbiota on AC, to detect the pathogenic microorganism in the biliary system, and to explore the relationship between the gut and bile microbiota of patients with AC. A total of 185 713 high-quality sequence reads were generated from the faecal samples of 15 patients and 13 healthy controls by 16S rRNA gene pyrosequencing. Patients' samples were significantly enriched in Akkermansia, Enterobacter and Escherichia/Shigella group. The healthy controls, however, showed significant enrichment of Clostridiales, Coprococcus, Coprobacillaceae, Paraprevotella, Turicibacter and TM7-3 in their faecal samples. Escherichia coli was the main biliary pathogenic microorganism, among others such as Klebsiella spp., Clostridium perfringens, Citrobacter freundii and Enterobacter cloacae in the bile of the patients. Additionally, the amount of bile endotoxin significantly correlated with the number of Enterobacteriaceae, especially E. coli. Our data indicate that Enterobacteriaceae might play essential role in the pathogenesis and/or progress of AC. This was verified in an in vivo model using a pathogenic E. coli isolated from one of the patients in guinea pigs and observed marked gallbladder inflammation and morphologic changes. This study thus provides insight which could be useful for the prevention, diagnosis and treatment of AC and related diseases by controlling the growth of Enterobacteriaceae to alleviate the infection.
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Affiliation(s)
- J Liu
- Department of Biochemistry and Molecular Biology, Dalian Medical University, China
| | - Q Yan
- Department of Biochemistry and Molecular Biology, Dalian Medical University, China; Shenzhen Puensum Genetech Institution, Shenzhen, China
| | - F Luo
- Department of Acute Abdominal Surgery, Second Affiliated Hospital of Dalian Medical University, China
| | - D Shang
- Department of Acute Abdominal Surgery, First Affiliated Hospital of Dalian Medical University, China
| | - D Wu
- Department of Biotechnology, Dalian Medical University, Dalian, China
| | - H Zhang
- Department of Acute Abdominal Surgery, Second Affiliated Hospital of Dalian Medical University, China
| | - X Shang
- Department of Biochemistry and Molecular Biology, Dalian Medical University, China
| | - X Kang
- Department of Biochemistry and Molecular Biology, Dalian Medical University, China
| | - M Abdo
- Department of Biochemistry and Molecular Biology, Dalian Medical University, China
| | - B Liu
- Department of Biochemistry and Molecular Biology, Dalian Medical University, China
| | - Y Ma
- Department of Biochemistry and Molecular Biology, Dalian Medical University, China.
| | - Y Xin
- Department of Biotechnology, Dalian Medical University, Dalian, China.
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Affhan S, Dachang W, Xin Y, Shang D. Lactic acid bacteria protect human intestinal epithelial cells from Staphylococcus aureus and Pseudomonas aeruginosa infections. Genet Mol Res 2015; 14:17044-58. [DOI: 10.4238/2015.december.16.5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Wang J, Li J, Wang W, Zhang Y, Ding Y, Liu T, Shang D. Detecting the Variations of the Spatial Position and Overlap Ratio for Primary Thoracic Esophageal Cancer Target During Radiation Therapy Based on Repeated 4-Dimensional CT Scans. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.08.201] [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: 11/26/2022]
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25
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Guo Y, Li J, Wang W, Zhang Y, Wang J, Duan Y, Shang D, Fu Z. Geometrical differences in target volumes based on 18F-fluorodeoxyglucose positron emission tomography/computed tomography and four-dimensional computed tomography maximum intensity projection images of primary thoracic esophageal cancer. Dis Esophagus 2014; 27:744-50. [PMID: 24915760 DOI: 10.1111/dote.12247] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The objective of the study was to compare geometrical differences of target volumes based on four-dimensional computed tomography (4DCT) maximum intensity projection (MIP) and 18F-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) images of primary thoracic esophageal cancer for radiation treatment. Twenty-one patients with thoracic esophageal cancer sequentially underwent contrast-enhanced three-dimensional computed tomography (3DCT), 4DCT, and 18F-FDG PET/CT thoracic simulation scans during normal free breathing. The internal gross target volume defined as IGTVMIP was obtained by contouring on MIP images. The gross target volumes based on PET/CT images (GTVPET ) were determined with nine different standardized uptake value (SUV) thresholds and manual contouring: SUV≥2.0, 2.5, 3.0, 3.5 (SUVn); ≥20%, 25%, 30%, 35%, 40% of the maximum (percentages of SUVmax, SUVn%). The differences in volume ratio (VR), conformity index (CI), and degree of inclusion (DI) between IGTVMIP and GTVPET were investigated. The mean centroid distance between GTVPET and IGTVMIP ranged from 4.98 mm to 6.53 mm. The VR ranged from 0.37 to 1.34, being significantly (P<0.05) closest to 1 at SUV2.5 (0.94), SUV20% (1.07), or manual contouring (1.10). The mean CI ranged from 0.34 to 0.58, being significantly closest to 1 (P<0.05) at SUV2.0 (0.55), SUV2.5 (0.56), SUV20% (0.56), SUV25% (0.53), or manual contouring (0.58). The mean DI of GTVPET in IGTVMIP ranged from 0.61 to 0.91, and the mean DI of IGTVMIP in GTVPET ranged from 0.34 to 0.86. The SUV threshold setting of SUV2.5, SUV20% or manual contouring yields the best tumor VR and CI with internal-gross target volume contoured on MIP of 4DCT dataset, but 3DPET/CT and 4DCT MIP could not replace each other for motion encompassing target volume delineation for radiation treatment.
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Affiliation(s)
- Y Guo
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Jinan, Shandong, China
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Li M, Shang D, Chen C, Kong L, Yu J. Pretreatment CT Perfusion Predicts Early Response of Advanced Esophageal Carcinoma Treated With Chemoradiation Therapy. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.745] [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: 11/25/2022]
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27
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Wang W, Li J, Zhang Y, Li F, Xu M, Fan T, Shao Q, Shang D. Comparison of patient-specific internal gross tumor volume for radiation treatment of primary esophageal cancer based separately on three-dimensional and four-dimensional computed tomography images. Dis Esophagus 2013; 27:348-54. [PMID: 23796234 DOI: 10.1111/dote.12089] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
To compare the target volume, position and matching index of the patient-specific internal gross tumor volume (IGTV) based on three-dimensional (3D) and four-dimensional (4D) computed tomography (CT) images for primary esophageal cancer. Twenty-nine patients with primary thoracic esophageal cancer underwent 3DCT and 4DCT scans during free breathing. IGTVs were constructed using three approaches: combining the gross target volumes from the 10 respiratory phases of the 4DCT dataset to produce IGTV10 ; IGTV2 was acquired by combining the two extreme phases; and IGTV3D was created from the 3DCT-based gross target volume by enlarging the 95th percentile of motion in each direction measured by the 4DCT. 0.16 cm lateral (LR), 0.14 cm anteroposterior (AP) and 0.29 cm superoinferior (SI) in the upper; 0.18 cm LR, 0.10 cm AP and 0.63 cm SI in the middle; and 0.40 cm LR, 0.58 cm AP and 0.82 cm in the lower thoracic esophagus could account for 95% of respiratory-induced tumor motion. The centroid position shift between IGTV10 and IGTV2 was all below 0.10 cm, and less than 0.20 cm between IGTV10 and IGTV3D . IGTV10 was bigger than IGTV2 ; the mean value of matching index for IGTV2 to IGTV10 was 0.87 ± 0.05, 0.85 ± 0.06 and 0.83 ± 0.05 for upper, middle and distal thoracic esophageal tumors, respectively, and just 0.57 ± 0.11, 0.56 ± 0.13 and 0.40 ± 0.03 between IGTV3D and IGTV10 . 4DCT-based IGTV10 is a reasonable patient-specific IGTV for primary thoracic esophageal cancer, and IGTV2 is considered as an acceptable alternative to IGTV10 . However, it seems unreasonable to use IGTV3D substitute IGTV10 .
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Affiliation(s)
- W Wang
- Department of Radiation Oncology, Shandong Tumor Hospital, Jinan, Shandong, China
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Bi X, Wang C, Ma L, Sun Y, Shang D. Investigation of the role of tryptophan residues in cationic antimicrobial peptides to determine the mechanism of antimicrobial action. J Appl Microbiol 2013; 115:663-72. [PMID: 23710779 DOI: 10.1111/jam.12262] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [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: 02/18/2013] [Revised: 05/04/2013] [Accepted: 05/18/2013] [Indexed: 11/27/2022]
Abstract
AIMS To understand the effects of Trp residues in linear antimicrobial peptides with α-helical conformations on cell permeation ability and membrane transduction efficacy. METHODS AND RESULTS A series of L-K6 analogues were designed and synthesized by replacing Ile or Leu with Trp at different positions on the hydrophobic face of L-K6. The antimicrobial and haemolytic activity and secondary structure of the designed Trp-containing peptides were assessed. In addition, the role of Trp in membrane disruption for these designed peptides was investigated. I1W, I4W and L5W demonstrated stronger activity than the other peptides against both Gram-positive and Gram-negative bacteria. All of the tested peptides preferentially interacted with negatively charged vesicles composed of phosphatidylglycerol (PG)/cardiolipin (CL) or PG/CL/phosphatidylethanolamine, and, to a lesser extent, with zwitterionic vesicles. I1W, I4W and L5W caused calcein release at 2·5 μmol l(-1) . CONCLUSIONS The position of Trp, rather than the number of Trp residues, in these peptides was an important factor in the antimicrobial activity. Trp residues were deeply inserted into negatively charged membranes but were largely exposed in aqueous buffer solution. SIGNIFICANCE AND IMPACT OF THE STUDY These Trp-containing peptides may represent good candidates for new antibiotic agents and for use in new therapeutic approaches.
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Affiliation(s)
- X Bi
- Faculty of Life Science, Liaoning Normal University, Dalian, China
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Headley JV, Peru KM, Mohamed MH, Frank RA, Martin JW, Hazewinkel RRO, Humphries D, Gurprasad NP, Hewitt LM, Muir DCG, Lindeman D, Strub R, Young RF, Grewer DM, Whittal RM, Fedorak PM, Birkholz DA, Hindle R, Reisdorph R, Wang X, Kasperski KL, Hamilton C, Woudneh M, Wang G, Loescher B, Farwell A, Dixon DG, Ross M, Pereira ADS, King E, Barrow MP, Fahlman B, Bailey J, McMartin DW, Borchers CH, Ryan CH, Toor NS, Gillis HM, Zuin L, Bickerton G, Mcmaster M, Sverko E, Shang D, Wilson LD, Wrona FJ. Chemical fingerprinting of naphthenic acids and oil sands process waters-A review of analytical methods for environmental samples. J Environ Sci Health A Tox Hazard Subst Environ Eng 2013; 48:1145-1163. [PMID: 23647107 DOI: 10.1080/10934529.2013.776332] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
This article provides a review of the routine methods currently utilized for total naphthenic acid analyses. There is a growing need to develop chemical methods that can selectively distinguish compounds found within industrially derived oil sands process affected waters (OSPW) from those derived from the natural weathering of oil sands deposits. Attention is thus given to the characterization of other OSPW components such as oil sands polar organic compounds, PAHs, and heavy metals along with characterization of chemical additives such as polyacrylamide polymers and trace levels of boron species. Environmental samples discussed cover the following matrices: OSPW containments, on-lease interceptor well systems, on- and off-lease groundwater, and river and lake surface waters. There are diverse ranges of methods available for analyses of total naphthenic acids. However, there is a need for inter-laboratory studies to compare their accuracy and precision for routine analyses. Recent advances in high- and medium-resolution mass spectrometry, concomitant with comprehensive mass spectrometry techniques following multi-dimensional chromatography or ion-mobility separations, have allowed for the speciation of monocarboxylic naphthenic acids along with a wide range of other species including humics. The distributions of oil sands polar organic compounds, particularly the sulphur containing species (i.e., OxS and OxS2) may allow for distinguishing sources of OSPW. The ratios of oxygen- (i.e., Ox) and nitrogen-containing species (i.e., NOx, and N2Ox) are useful for differentiating organic components derived from OSPW from natural components found within receiving waters. Synchronous fluorescence spectroscopy also provides a powerful screening technique capable of quickly detecting the presence of aromatic organic acids contained within oil sands naphthenic acid mixtures. Synchronous fluorescence spectroscopy provides diagnostic profiles for OSPW and potentially impacted groundwater that can be compared against reference groundwater and surface water samples. Novel applications of X-ray absorption near edge spectroscopy (XANES) are emerging for speciation of sulphur-containing species (both organic and inorganic components) as well as industrially derived boron-containing species. There is strong potential for an environmental forensics application of XANES for chemical fingerprinting of weathered sulphur-containing species and industrial additives in OSPW.
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Affiliation(s)
- J V Headley
- Water Science & Technology Directorate, Environment Canada, Saskatoon, Saskatchewan, Canada.
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Shang D, Sun Y, Wang C, Ma L, Li J, Wang X. Rational design of anti-microbial peptides with enhanced activity and low cytotoxicity based on the structure of the arginine/histidine-rich peptide, chensinin-1. J Appl Microbiol 2012; 113:677-85. [PMID: 22686707 DOI: 10.1111/j.1365-2672.2012.05355.x] [Citation(s) in RCA: 7] [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: 03/21/2012] [Revised: 05/12/2012] [Accepted: 05/18/2012] [Indexed: 11/29/2022]
Abstract
AIMS To understand the structure-activity relationship of chensinin-1, a anti-microbial peptide (AMP) with an unusual structure, and to develop novel AMPs as therapeutic agents. METHODS AND RESULTS A series of chensinin-1 analogues were designed and synthesized by one to three replacement of glycines with leucines at the hydrophilic face of chensinin-1 or rearrangement of some of the residues in its sequence. Circular dichroism spectroscopy showed that the analogues adopted α-helical-type conformations in 50% trifluoroethanol/water but adopted β-strand-type conformations in 30 mmol l(-1) sodium dodecyl sulphate. The anti-microbial activities of the peptides against Gram-positive bacteria increased 5- to 30-fold, and these increases paralleled the increases in the peptides' hydrophobicities. Their haemolytic activities also increased. Amphipathicities had little influence on the bactericidal activity of chensinin-1. All peptides caused leakage of calcein entrapped in negatively charged liposomes although with different efficiencies. The peptides did not induce leakage of calcein from uncharged liposomes. CONCLUSIONS Peptide adopted an aperiodic structure can improve the anti-microbial potency by increasing peptide hydrophobicity. Its target is bacteria plasma membrane. SIGNIFICANCE AND IMPACT OF THE STUDY Chensinin-1 can act as a new lead molecule for the study of AMPs with atypical structures.
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Affiliation(s)
- D Shang
- Faculty of Life Science, Liaoning Normal University, Dalian, China.
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Li M, Shang D, Li J, Du J, Yin Y, Yu J. The Use of 4D-CT for Determining the Internal Target Volume of Solitary Pulmonary Lesion. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.1618] [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: 10/19/2022]
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Shang D, Li M, Li J, Yin Y, Du J, Yu J. Comparison of 4D-CT MIP Method with Axial CT Empirical Margin for the PTV of Solitary Pulmonary Lesion. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.1603] [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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Zhao J, Hua R, Zhao X, Meng Y, Ao Y, Liu Q, Shang D, Sun M, Lo WY, Zhang X. Three novel mutations of the EDA gene in Chinese patients with X-linked hypohidrotic ectodermal dysplasia. Br J Dermatol 2008. [DOI: 10.1111/j.0007-0963.2007.08320.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Zhao J, Hua R, Zhao X, Meng Y, Ao Y, Liu Q, Shang D, Sun M, Lo WHY, Zhang X. Three novel mutations of the EDA gene in Chinese patients with X-linked hypohidrotic ectodermal dysplasia. Br J Dermatol 2007; 158:614-7. [PMID: 18076698 DOI: 10.1111/j.1365-2133.2007.08383.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- J Zhao
- Department of Medical Genetics and National Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
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Akwar TH, Poppe C, Wilson J, Reid-Smith RJ, Dyck M, Waddington J, Shang D, Dassie N, McEwen SA. Risk factors for antimicrobial resistance among fecal Escherichia coli from residents on forty-three swine farms. Microb Drug Resist 2007; 13:69-76. [PMID: 17536936 DOI: 10.1089/mdr.2006.9999] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Fecal Escherichia coli (n = 555) were isolated from 115 residents on 43 farrow-to-finish swine farms to determine the prevalence of antimicrobial resistance and associated risk factors. Susceptibility to 21 antimicrobials was determined and the overall prevalence of antimicrobial resistance was 25.8%. Pair-wise difference in prevalences of resistance to individual antimicrobials was significant between isolates from residents on farms that fed medicated swine rations compared to those that did not (p = 0.013). Cross-resistance among antimicrobials of same class and multidrug-resistance were observed. Logistic regression models revealed the following risk factors positively associated with antimicrobial resistance: use of antimicrobials in pigs on farms; number of hours per week that farmers spent in their pig barns; handling of sick pigs; and intake of antimicrobials by farm residents. This study indicates that occupational exposure of farmers to resistant bacteria and use of antimicrobials in pig farming may constitute a source of resistance in humans, although the human health impacts of such resistance is unknown. The consumption of antimicrobials by farmers appeared to constitute a significant risk for resistance development. Fecal E. coli from farm residents may act as a reservoir of resistance genes for animal and/or human pathogens.
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Affiliation(s)
- T H Akwar
- Department of Population Medicine, University of Guelph, Guelph, Ontario, Canada.
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Shang D, Carnahan H, Dubrowski A. Structural flexibility of laparoscopic instruments: implication for the design of virtual reality simulators. Stud Health Technol Inform 2006; 119:503-5. [PMID: 16404108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Laparoscopic training, under simulated settings, benefits from high fidelity models of the actual environment. This study was aimed at reducing uncertainty in the displacement and loads experienced by a laparoscopic instrument during surgical training. Infrared tracking of laparoscopic instruments is ineffective when real tissues attenuate the infrared signals. Incorporating the use of strain gauges for tip deflection measurements allows for online motion and load tracking during a procedure. Strain gauge voltages and infrared markers indicating displacement were both linear with respect to loads up to 700 grams. The resultant strain gauge voltage was equated to deflection values with a calibration constant. The results serve two purposes. First, it may enable the tracking and analysis of the skill level of novice surgeons using bench models. Second, the mechanical model of each instrument can be quantified and incorporated into virtual simulations, thus increasing model fidelity, effectively leading to better learning.
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Affiliation(s)
- D Shang
- Department of Kinesiology, University of Waterloo, Canada
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Zhang M, Zhu J, Wang Q, Shang D. Contrast enhanced MR angiography in pulmonary sequestration. Chin Med J (Engl) 2001; 114:1326-8. [PMID: 11793865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023] Open
Abstract
OBJECTIVE To evaluate the feasibility of contrast enhanced three-dimensional (3D) magnetic resonance angiography (MRA) in identifying the systemic blood supply in pulmonary sequestration. METHODS Three patients who were suspected of pulmonary sequestration were examined by contrast enhanced 3D MRA. MR images were compared with surgical findings. RESULTS Contrast enhanced 3D MRA clearly demonstrated systemic arteries from the descending thoracic aorta supplying the basilar segments of the lower lobe in each case. Pulmonary veins from these segments, which drained into the left atrium in two cases, were also detected. MRA images were consistent with those observed in surgery. CONCLUSION Contrast enhanced 3D MRA allows accurate diagnosis of pulmonary sequestration and may obviate the need for more invasive investigations.
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Affiliation(s)
- M Zhang
- Department of Radiology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310003, China.
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Wattam B, Shang D, Rahman S, Egglezou S, Scully M, Kakkar V, Lu X. Arg-Tyr-Asp (RYD) and Arg-Cys-Asp (RCD) motifs in dendroaspin promote selective inhibition of beta1 and beta3 integrins. Biochem J 2001; 356:11-7. [PMID: 11336631 PMCID: PMC1221807 DOI: 10.1042/0264-6021:3560011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Arg-Gly-Asp (RGD) is a unique minimal integrin-binding sequence that is found within several glycoprotein ligands. This sequence has also been found in snake-venom anti-platelet proteins, including the disintegrins and dendroaspin, a natural variant of short-chain neurotoxins isolated from the venom of Dendroaspis jamesonii. In the present study, the motifs RYD and RCD were introduced into the dendroaspin scaffold to replace RGD. Both motifs in dendroaspin caused inhibition of ADP-induced platelet aggregation with IC(50) values of 200 and 300 nM respectively, similar to that of the wild-type RGD motif (170 nM). In comparison with wild-type dendroaspin, both RYD- and RCD-containing dendroaspins were more selective in the inhibition of the adhesion of K562 cells to laminin rather than to fibrinogen and fibronectin, even though they were 10-30-fold less potent at inhibiting K562 cell (containing alpha(5)beta(1) integrin) adhesion to laminin compared with wild-type. Interestingly, the RYD motif produced a similar IC(50) value to the RGD motif at inhibiting A375-SM cell (beta(3) integrin) adhesion to collagen, whereas the RCD motif was approx. 2-6-fold less potent compared with either RGD or RYD. These findings show that the selectivity of dendroaspin binding to beta(1) and beta(3) integrins can be modulated by the introduction of alternative cell recognition sequences.
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Affiliation(s)
- B Wattam
- Thrombosis Research Institute, Manresa Road, London SW3 6LR, UK
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Lu X, Sun Y, Shang D, Wattam B, Egglezou S, Hughes T, Hyde E, Scully M, Kakkar V. Evaluation of the role of proline residues flanking the RGD motif of dendroaspin, an inhibitior of platelet aggregation and cell adhesion. Biochem J 2001; 355:633-8. [PMID: 11311124 PMCID: PMC1221777 DOI: 10.1042/bj3550633] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The effect of a panel of proline mutants of dendroaspin, an inhibitor of platelet aggregation and cell adhesion, including A(42)-dendroaspin, A(47)-dendroaspin, A(49)-dendroaspin, A(42,47)-dendroaspin and A(47,49)-dendroaspin, was investigated using platelet-aggregation and cell-adhesion assays. Here we show that a single alanine-for-proline substitution did not affect potency when measured as the ability either to inhibit platelet aggregation induced by ADP (IC(50) approximately 170 nM) or to block transfected A375-SM cell adhesion to fibrinogen in the presence of Mn(2+) as compared with wild-type dendroaspin. By comparison, double proline substitution with alanines significantly reduced the potency in both assays by approx. 5-8-fold. These observations, therefore, suggest that proline residues flanking the RGD motif in dendroaspin and other RGD-containing venom proteins, e.g. disintegrins, may contribute to maintaining a favourable conformation for the solvent-exposed RGD site for its recognition by integrin receptors.
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Affiliation(s)
- X Lu
- Thrombosis Research Institute, Manresa Road, London, SW3 6LR, UK.
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Abstract
TT virus (TTV) is transfusion-transmissible but its involvement in post-transfusion hepatitis is uncertain. To investigate the potential association of TTV with liver diseases, the prevalence of TTV DNA was tested by semi-nested PCR in 113 carriers of hepatitis C virus (HCV), 10 patients with acute liver failure, 11 patients with cryptogenic cirrhosis and 200 control blood donors. Thirty-seven of these patients underwent liver transplantation and were tested pre- and post-transplantation. TTV DNA was semi-quantified in serial samples from seven patients with unexplained post-transplant hepatitis. TTV genotyping was performed on samples from 28 patients by sequence analysis. The prevalence of TTV DNA in blood donors was 1.5% and 17% in HCV infected haemophiliacs. In patients with acute or chronic liver disease or hepatitis, 6 to 27% prevalence was observed. After liver transplantation, the prevalence of TTV DNA increased from 16 to 46% (P < 0.01). In patients who developed unexplained hepatitis post-transplantation, TTV viraemia did not parallel ALT levels. TTV DNA either increased in titre or became detectable shortly after transplantation, suggesting that either TTV was transfusion-transmitted, or, more likely, that immunosuppression caused a recurrence of low level or undetectable TTV viraemia. TTV had considerable genomic diversity in the N22 region, corresponding to at least 4 genotypes. Genotype 2 was found in 14/28 patients.
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Affiliation(s)
- D Shang
- Department of Haematology, Division of Transfusion Medicine, East Anglia Blood Centre, Cambridge, United Kingdom
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Abstract
TT virus (TTV) is transfusion-transmissible but its involvement in post-transfusion hepatitis is uncertain. To investigate the potential association of TTV with liver diseases, the prevalence of TTV DNA was tested by semi-nested PCR in 113 carriers of hepatitis C virus (HCV), 10 patients with acute liver failure, 11 patients with cryptogenic cirrhosis and 200 control blood donors. Thirty-seven of these patients underwent liver transplantation and were tested pre- and post-transplantation. TTV DNA was semi-quantified in serial samples from seven patients with unexplained post-transplant hepatitis. TTV genotyping was performed on samples from 28 patients by sequence analysis. The prevalence of TTV DNA in blood donors was 1.5% and 17% in HCV infected haemophiliacs. In patients with acute or chronic liver disease or hepatitis, 6 to 27% prevalence was observed. After liver transplantation, the prevalence of TTV DNA increased from 16 to 46% (P < 0.01). In patients who developed unexplained hepatitis post-transplantation, TTV viraemia did not parallel ALT levels. TTV DNA either increased in titre or became detectable shortly after transplantation, suggesting that either TTV was transfusion-transmitted, or, more likely, that immunosuppression caused a recurrence of low level or undetectable TTV viraemia. TTV had considerable genomic diversity in the N22 region, corresponding to at least 4 genotypes. Genotype 2 was found in 14/28 patients.
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Affiliation(s)
- D Shang
- Department of Haematology, Division of Transfusion Medicine, East Anglia Blood Centre, Cambridge, United Kingdom
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Shang D. [Progress in the study of prevention and control of Brucellosis in China in last 50 years]. Zhonghua Liu Xing Bing Xue Za Zhi 2000; 21:55-7. [PMID: 15460005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Affiliation(s)
- D Shang
- Institute of Epidemiology and Microbiology, China Academy of Preventive Medicine, Beijing 102206, China
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Abstract
To investigate the potential clinical utility of antibody response to HVR1 of HCV, the genomic and amino acid diversity of HVR1 was compared between two groups of four chronic HCV carriers with or without liver cirrhosis. Peptides corresponding to the deduced COOH- and NH2-terminal amino acid sequences of HVR1 were synthesised to assess the reactivity of patient sera to autologous and homologous HVR1 epitopes by enzyme-linked immunosorbent assay. HCV chronic carriers had significantly more frequent cross-reactivity with homologous C- than N-terminal HVR1 peptides. Twelve cirrhotic and eleven noncirrhotic patients had a similar frequency of cross-reactivity with either C- or N-terminal HVR1 peptides. However, noncirrhotic patients had a significantly higher level of C-terminal HVR1 antibody cross-reactivity than cirrhotic patients. In HCV chronic carriers, the magnitude of the immune response to but not the frequency of cross-reactivity with C-terminus HVR1 peptides differ between patients with and without liver cirrhosis.
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Affiliation(s)
- J P Allain
- Department of Haematology, University of Cambridge, United Kingdom.
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Abstract
The HCV hypervariable region 1 (HVR1) of the main E2 envelope protein is critically important in HCV neutralization but its extreme variability makes immune therapy and vaccine development particularly difficult. To explore the hypothesis that HVR1 carries a common epitope susceptible of eliciting cross-reactive neutralizing and inhibitory antibodies, rabbits were immunized with a series of synthetic HVR1 peptides. The anti-HVR1 produced were purified and characterized. Several lines of evidence supported the working hypothesis: (1) although injected only once, a boosting effect from poorly homologous peptides was observed; (2) purified rabbit IgG reacted with high affinity with immunizing peptides and cross-reacted with 16 of 17 unrelated HVR1 peptides; (3) antibodies appeared of restricted diversity irrespective of the linear HVR1 peptide sequences; (4) anti-HVR1 peptides effectively captured HCV in 22 of 33 plasmas from random infected patients; (5) anti-HVR1 IgG blocked the binding of antibody-captured HCV to MOLT-4 cells. These findings suggest that with an appropriate HVR1 peptide immunization scheme, high titer, broadly cross-reactive, blocking antibodies to HCV can be produced. Antibodies to the putative ubiquitous HVR1 epitope may have important clinical uses.
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Affiliation(s)
- D Shang
- Department of Haematology, University of Cambridge, Cambridge, United Kingdom
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46
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Shang D. [Brucellosis and its prevention and control]. Zhonghua Liu Xing Bing Xue Za Zhi 1998; 19:67-8. [PMID: 10322710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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47
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Shang D. [Current status of epidemiological study of brucellosis]. Zhonghua Liu Xing Bing Xue Za Zhi 1998; 19:107-10. [PMID: 10322722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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48
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Chen P, Shang D. [Current status of the study on the integration of traditional Chinese medicine with Western medicine in the treatment of arteriosclerosis obliterans]. Zhongguo Zhong Xi Yi Jie He Za Zhi 1998; 18:122-4. [PMID: 11367643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/16/2023]
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Xu D, Lu H, Nu J, Meng Z, Shang D, Kang T. [Dynamic study of anti-NS5 and ALT in post-transfusion hepatitis C]. Zhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi 1997; 11:344-7. [PMID: 15617244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
In order to study the character and dynamic changes of HCV NS5 antigen in post-transfusion hepatitis C, EIA was established with fusion protein, and different groups of population were investigated. The results showed the positive rate of whole blood donor, normal people, chronic hepatitis C patients and post transfusion hepatitis C patients is 0.0%, 1.66%, 50.7% and 70.5%, respectively. Serial blood samples of 25 cases of acute or chronic post-transfusion hepatitis C were detected, and the results indicated that the antibody of NS5 appeared relatively late, and the serum conversion time was 182.9 +/- 168.5 days. The anti-NS5 positive rate in 1, 3, 6, 12 and 24 months after HCV infection was 28%, 40%, 52%, 68% and 76%, respectively. The positive rate of anti-NS5 in sera with HCV RNA was 61.9%. Analysis on the appearance of antibody to the different antibody region of the gene, ALT and HCV RNA showed the dynamic changes of anti-NS5 were corresponding to the serum ALT in some cases, indicating antibody of NS5 appear later and may reflect the disease activity to some extent. The dynamic changes of anti-NS5 are of four kinds: transient positive, intermittent positive, persistent positive and persistent negative in during the two years period.
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Affiliation(s)
- D Xu
- Institute of Basic Medical Sciences, Academy of Military Medical Sciences, Beijing
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Shen D, Lu H, Li M, He L, Shang D, Ma X. [Cloning and sequencing of cDNA of E2/NS1 gene of hepatitis C virus]. Zhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi 1997; 11:227-31. [PMID: 15617335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
Hepatitis C virus (HCV) RNA extracted from serum of a patient infected with HCV in Beijing was converted to cDNA by reverse transcription. HCV E2/NS1 gene (approximately 930 bp) was amplified by nested polymerase chain reaction and was inserted into pGEM-T plasmid vector. The 431 bp nucleotide sequence at 5' terminus of this gene was determined by dideoxy-mediated chain termination method. The result of comparison of this sequence and sequences of another 9 HCV isolates suggested that the isolate we obtained was highly homologous to HCV genotype II. There are two hypervariable regions (HVR) at the N terminus of envelope protein encoded by HCV E2/NS1 gene. Several relatively conserved amino acid residues and areas located in and out of HVR were also observed. They are concerned in maintenance of spatial conformation of HCV envelope protein, but their immune function remains to be further studied.
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Affiliation(s)
- D Shen
- Department of Microbiology, PLA General Hospital, Beijing 100853
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