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Yang WY, Rao PS, Luo YC, Lin HK, Huang SH, Yang JM, Yuh CH. Omics-based Investigation of Diet-induced Obesity Synergized with HBx, Src, and p53 Mutation Accelerating Hepatocarcinogenesis in Zebrafish Model. Cancers (Basel) 2019; 11:cancers11121899. [PMID: 31795276 PMCID: PMC6966430 DOI: 10.3390/cancers11121899] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 11/17/2019] [Accepted: 11/25/2019] [Indexed: 12/19/2022] Open
Abstract
The primary type of liver cancer, hepatocellular carcinoma (HCC), has been associated with nonalcoholic steatohepatitis, diabetes, and obesity. Previous studies have identified some genetic risk factors, such as hepatitis B virus X antigens, overexpression of SRC oncogene, and mutation of the p53 tumor suppressor gene; however, the synergism between diet and genetic risk factors is still unclear. To investigate the synergism between diet and genetic risk factors in hepatocarcinogenesis, we used zebrafish with four genetic backgrounds and overfeeding or high-fat-diet-induced obesity with an omics-based expression of genes and histopathological changes. The results show that overfeeding and high-fat diet can induce obesity and nonalcoholic steatohepatitis in wild-type fish. In HBx, Src (p53-) triple transgenic zebrafish, diet-induced obesity accelerated HCC formation at five months of age and increased the cancer incidence threefold. We developed a global omics data analysis method to investigate genes, pathways, and biological systems based on microarray and next-generation sequencing (NGS, RNA-seq) omics data of zebrafish with four diet and genetic risk factors. The results show that two Kyoto Encyclopedia of Genes and Genomes (KEGG) systems, metabolism and genetic information processing, as well as the pathways of fatty acid metabolism, steroid biosynthesis, and ribosome biogenesis, are activated during hepatocarcinogenesis. This study provides a systematic view of the synergism between genetic and diet factors in the dynamic liver cancer formation process, and indicate that overfeeding or a high-fat diet and the risk genes have a synergistic effect in causing liver cancer by affecting fatty acid metabolism and ribosome biogenesis.
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Affiliation(s)
- Wan-Yu Yang
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan 35053, Miaoli, Taiwan; (W.-Y.Y.); (P.-S.R.); (H.-K.L.)
| | - Pei-Shu Rao
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan 35053, Miaoli, Taiwan; (W.-Y.Y.); (P.-S.R.); (H.-K.L.)
- Department of Life Science, National Tsing-Hua University, Hsinchu 30070, Taiwan
| | - Yong-Chun Luo
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu 30010, Taiwan; (Y.-C.L.); (S.-H.H.)
| | - Hua-Kuo Lin
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan 35053, Miaoli, Taiwan; (W.-Y.Y.); (P.-S.R.); (H.-K.L.)
| | - Sing-Han Huang
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu 30010, Taiwan; (Y.-C.L.); (S.-H.H.)
| | - Jinn-Moon Yang
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu 30010, Taiwan; (Y.-C.L.); (S.-H.H.)
- Department of Biological Science and Technology, National Chiao Tung University, Hsinchu 30010, Taiwan
- Center for Intelligent Drug Systems and Smart Bio-devices, National Chiao Tung University, Hsinchu 30010, Taiwan
- Correspondence: (J.-M.Y.); (C.-H.Y.); Tel.: +011-886-03-5712121*56942 (J.-M.Y.); +011-886-37-206166*35338 (C.-H.Y.)
| | - Chiou-Hwa Yuh
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Zhunan 35053, Miaoli, Taiwan; (W.-Y.Y.); (P.-S.R.); (H.-K.L.)
- Department of Biological Science and Technology, National Chiao Tung University, Hsinchu 30010, Taiwan
- Institute of Bioinformatics and Structural Biology, National Tsing-Hua University, Hsinchu 30070, Taiwan
- Program in Environmental and Occupational Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Correspondence: (J.-M.Y.); (C.-H.Y.); Tel.: +011-886-03-5712121*56942 (J.-M.Y.); +011-886-37-206166*35338 (C.-H.Y.)
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Zhang Y, Hu XX, Gao L, Ni X, Chen J, Chen L, Zhang WP, Yang JM, Wang JM. [Clinical and prognostic values of TP53 mutation in patients with acute myeloid leukemia]. Zhonghua Xue Ye Xue Za Zhi 2019; 40:932-938. [PMID: 31856443 PMCID: PMC7342383 DOI: 10.3760/cma.j.issn.0253-2727.2019.11.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Indexed: 02/06/2023]
Abstract
Objective: To explore the clinical and prognostic values of TP53 gene mutation in patients with acute myeloid leukemia (AML) . Methods: A retrospective analysis of 265 newly diagnosed AML patients with next-generation sequencing (NGS) data in the Hematology Department of Changhai Hospital from January 2010 to January 2019 was performed. Mutation analysis was carried out by targeted sequencing technology including 200 hematological malignancy related genes. The association of TP53 mutation with clinical features was analyzed. Results: Alterations in TP53 were found in 20 (7.5%) patients, including 17 case (6.4%) of missense mutations, 2 cases (0.7%) of frame-shift deletion mutations and 1 case (0.4%) of splicing sites mutation. A total of 23 kinds of TP53 mutations were detected, most of them (16, 69.6%) were located in the DNA binding domain of exon 5-8, 4 in the DNA binding domain of exon 3-4, 2 in exon 10 and 1 in splice site, respectively. The median age of patients with TP53 alterations was higher than those without [52 (26-72) years old vs 45 (14-75) years old, P= 0.008]. The frequency of complex karyotypes was higher in patients with TP53 alterations than those without [45.0% (9/20) vs 6.1% (15/245) , P<0.001]. Median overall survival (OS) of patients with TP53 alterations was shorter than those without[14.1 (95%CI 6.78-21.42) months vs 31.4 (95%CI 13.20-49.59) months, P=0.029]. The OS of patients treated with "Decitabine + CAG" was superior than that of patients treated with "3 + 7" regimen [30.0 (95%CI 27.35-38.84) months vs 12.5 (95%CI 5.80-19.19) months, P=0.018]. Multivariate analysis indicated that TP53, DNMT3A and USH2A alterations, WBC ≥ 12.45×10(9)/L had negative impacts on OS. Conclusion: The frequency of TP53 mutation was 7.5% in our cohort. Most mutations were located in the DNA binding domain. TP53 alterations were strongly associated with older age, complex karyotype and shorter OS. Decitabine-based induction chemotherapy and hematopoietic stem cell transplantation may improve OS, more cases and/or multicenter randomized studies are needed for further confirmation.
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Affiliation(s)
- Y Zhang
- Department of Hematology, Changhai Hospital, the Second Military Medical University; Institute of Hematology, PLA, Shanghai 200433, China
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53
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Guo YM, Liu XF, Jiao LJ, Yin SY, Wang Z, Li XX, Ma ZP, Yang JM, He MX. [Angioimmunoblastic T-cell lymphoma: histopathological grading and prognosis]. Zhonghua Bing Li Xue Za Zhi 2019; 48:784-790. [PMID: 31594043 DOI: 10.3760/cma.j.issn.0529-5807.2019.10.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the histological features and prognostic factors of angioimmunoblastic T-cell lymphoma (AITL). Methods: The pathological data of 62 patients with AITL with complete follow-up information were retrospectively collected and analyzed from Changhai Hospital during September 2012 and September 2017. Histological and immunohistochemical (IHC) examination, in situ hybridization (ISH), and single nucleotide polymorphisms (SNP) gene mutation analysis were done. Subgroup evaluation with histology, IHC, ISH, SNP gene mutation, and association with clinical progression were performed. Results: The cohort included 62 cases of AITL, including 46 males and 16 females patients, with a median age of 64 years. Follicular dendritic cells (FDC) area showed significantly expansion (≥30%) in 40 cases; increased plasma cells (≥10%) was seen in 37 cases; B cells were distributed around blood vessels in 37 cases; and increased p53 mutation positive cells (≥40%) were seen in 39 cases; high Ki-67 index (≥40%) was seen in 39 cases; RHOA mutation was seen in 19 cases; TET2 mutation was seen in 9 cases. Overall survival analysis showed these factors were significantly correlated with tumor prognosis (P<0.05). Multivariate analysis showed that CD38 positive cells<10%, Ki-67≥40%, RHOA and TET2 mutations were risk factors associated with overall survival. Conclusions: AITL could be divided into two different prognostic groups, low-grade and high-grade, with statistically significance outcome, based on the FDC area expansion, degree of plasma cell proliferation, B cells distribution pattern combined with gene mutations and clinical progression. Low-grade malignant group progresses slowly, and high-grade malignant group is highly invasive.
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Affiliation(s)
- Y M Guo
- Department of Pathology, Changhai Hospital, Naval Military Medical University, Shanghai 200433, China; Department of Pathology, Shanghai Baoshan District Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai 201900, China
| | - X F Liu
- Department of Pathology, Changhai Hospital, Naval Military Medical University, Shanghai 200433, China
| | - L J Jiao
- Department of Pathology, Changhai Hospital, Naval Military Medical University, Shanghai 200433, China
| | - S Y Yin
- Department of Pathology, Changhai Hospital, Naval Military Medical University, Shanghai 200433, China
| | - Z Wang
- Department of Pathology, Xijing Hospital, Air Force Military Medical University, Xi'an, 710032, China
| | - X X Li
- Department of Pathology, the First Affiliated Hospital, Xinjiang Medical University, Urumqi 830054, China
| | - Z P Ma
- Department of Pathology, the First Affiliated Hospital, Xinjiang Medical University, Urumqi 830054, China
| | - J M Yang
- Department of Hematology, Changhai Hospital, Naval Military Medical University, Shanghai 200433, China
| | - M X He
- Department of Pathology, Changhai Hospital, Naval Military Medical University, Shanghai 200433, China
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Simak M, Lu HHS, Yang JM. Boolean function network analysis of time course liver transcriptome data to reveal novel circadian transcriptional regulators in mammals. J Chin Med Assoc 2019; 82:872-880. [PMID: 31469689 DOI: 10.1097/jcma.0000000000000180] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Many biological processes in mammals are subject to circadian control at the molecular level. Disruption of circadian rhythms has been demonstrated to be associated with a wide range of diseases, such as diabetes mellitus, mental disorders, and cancer. Although the core circadian genes are well established, there are multiple reports of novel peripheral circadian regulators. The goal of this study was to provide a comprehensive computational analysis to identify novel potential circadian transcriptional regulators. METHODS To fulfill the aforementioned goal, we applied a Boolean function network method to analyze the microarray time course mouse and rat liver datasets available in the literature. The inferred direct pairwise relations were further investigated using the functional annotation tool. This approach generated a list of transcription factors (TFs) and cofactors, which were associated with significantly enriched circadian gene ontology (GO) categories. RESULTS As a result, we identified 93 transcriptional circadian regulators in mouse and 95 transcriptional circadian regulators in rat. Of these, 19 regulators in mouse and 21 regulators in rat were known, whereas the rest were novel. Furthermore, we validated novel circadian TFs with bioinformatics databases, previous large-scale circadian studies, and related small-scale studies. Moreover, according to predictions inferred from ChIP-Seq experiments reported in the database, 40 of our candidate circadian regulators were confirmed to have circadian genes as direct regulatory targets. In addition, we annotated candidate circadian regulators with disorders that were often associated with disruptions of circadian rhythm in the literature. CONCLUSION In summary, our computational analysis, which was followed by an extensive verification by means of a literature review, can contribute to translational study from endocrinology to cancer research and provide insights for future investigation.
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Affiliation(s)
- Maria Simak
- Bioinformatics Program, Taiwan International Graduate Program, Institute of Information Science, Academia Sinica, Taipei, Taiwan, ROC
- Institute of Statistics, National Chiao Tung University, Hsinchu, Taiwan, ROC
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, Taiwan, ROC
| | | | - Jinn-Moon Yang
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, Taiwan, ROC
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55
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Fu WJ, Du J, Lu J, Wang LZ, Yang JM, He MX, Hu XX. [Rosai-Dorfman disease: a clinicopathologic analysis and whole exome sequencing in 23 cases]. Zhonghua Xue Ye Xue Za Zhi 2019; 40:656-661. [PMID: 31495132 PMCID: PMC7342879 DOI: 10.3760/cma.j.issn.0253-2727.2019.08.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
目的 分析Rosai-Dorfman disease(RDD)的临床病理特征,利用全基因组外显子测序探讨RDD的发病机制。 方法 回顾性分析第二军医大学附属长海医院、长征医院2010年1月至2018年7月收治的23例RDD患者临床病理资料,并对9例患者石蜡包埋组织标本进行了全基因组外显子测序。 结果 23例RDD患者中位年龄47(10~79)岁,19例为结外型,3例为淋巴结型,1例为混合型。所有患者均接受了手术切除病灶,19例患者中位随访24(1~67)个月,均无复发。病理形态主要表现为淋巴结窦内或结外组织中组织细胞增生伴有噬淋巴细胞现象,免疫组化示组织细胞表达S100、CD68、CD163,不表达CD1a。全基因组外显子测序发现mTOR、KMT2D和NOTCH1基因突变。 结论 mTOR、KMT2D和NOTCH1基因突变可能参与了RDD的发病机制,其临床意义仍需要进一步研究。
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Affiliation(s)
- W J Fu
- Department of Hematology, Changhai Hospital, the Second Military Medical University; Institute of Hematologic Disease of Chinese PLA, Shanghai 200433, China
| | - J Du
- Department of Hematology, Institute of Hematology, Changzheng Hospital, Shangai 200003, China
| | - J Lu
- Department of Hematology, Institute of Hematology, Changzheng Hospital, Shangai 200003, China
| | - L Z Wang
- Department of Pathology, Changhai Hospital, Shangai 200433, China
| | - J M Yang
- Department of Hematology, Changhai Hospital, the Second Military Medical University; Institute of Hematologic Disease of Chinese PLA, Shanghai 200433, China
| | - M X He
- Department of Pathology, Changzheng Hospital, Shangai 200003, China
| | - X X Hu
- Department of Hematology, Changhai Hospital, the Second Military Medical University; Institute of Hematologic Disease of Chinese PLA, Shanghai 200433, China
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56
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Huang AJ, Wang LB, Du J, Tang GS, Cheng H, Gong SL, Gao L, Qiu HY, Ni X, Chen J, Chen L, Zhang WP, Wang JM, Yang JM, Hu XX. [Efficacy of Hyper-CVAD/MA and CHALL-01 regimens in the treatment of Philadelphia chromosome-positive adult acute lymphoblastic leukemia patients under 60 years old]. Zhonghua Xue Ye Xue Za Zhi 2019; 40:625-632. [PMID: 31495127 PMCID: PMC7342869 DOI: 10.3760/cma.j.issn.0253-2727.2019.08.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Objective: To compare the difference of efficacy between traditional Hyper-CVAD/MA regimen and the adolescents inspired chemotherapy regimen, CH ALL-01, in treatment of adult Philadelphia chromosome-positive acute lymphoblastic leukemia (Ph(+) ALL) . Methods: In this study we retrospectively analyzed 158 Ph(+) ALL patients receiving Hyper-CVAD/MA regimen (n=63) or CHALL-01 regimen (n=95) in our center and Changzheng hospital from January 2007 to December 2017, excluding patients with chronic myeloid leukemia in blast crisis. Tyrosine kinase inhibitor (TKI) was administered during induction and consolidation chemotherapy. Patients who underwent hematopoietic stem cell transplantation received TKI as maintenance therapy. Results: Of them, 91.1% (144/158) patients achieved complete remission (CR) after 1-2 courses of induction. CR rate was 90.5% (57/63) for patients in Hyper-CVAD/MA group and 91.6% (87/95) for patients in CHALL-01 group. There was no difference in CR rates between the two groups (χ(2)=0.057, P=0.811) . The last follow-up was June 2018. A cohort of 134 CR patients could be used for further analysis, among them, 53 patients received Hyper-CVAD/MA regimen and other 81 patients received CHALL-01 regimen. The molecular remission rates were significantly higher in CHALL-01 group (complete molecular response: 44.4%vs 22.6%; major molecular response: 9.9% vs 18.9%) (χ(2)=7.216, P=0.027) . For the patients in Hyper-CVAD/MA group, the 4-year overall survival (OS) was 44.81% (95%CI: 30.80%-57.86%) and the 4-year disease free survival (DFS) was 37.95% (95%CI: 24.87%-50.93%) . For patients received CHALL-01 regimen, the 4-year OS was 55.63% (95%CI: 39.07%-69.36%) (P=0.037) and 4 year DFS was 49.06% (95%CI: 34.24%-62.29%) (P=0.015) , while there was no significant difference in 4 year cumulative incidence of relapse (CIR) (P=0.328) or cumulative incidence of nonrelapse mortality (CI-NRM) (P=0.138) . The rate of pulmonary infection was lower in patients received CHALL-01 regimen compared with patients received Hyper-CVAD regimen (43.4% vs 67.9%, χ(2)=7.908, P=0.005) . Conclusions: Outcome with CHALL-01 regimen appeared better than that with the Hyper-CVAD/MA regimen in Ph(+) ALL, which has lower incidence of pulmonary infection, higher molecular remission rate and better OS and DFS.
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Affiliation(s)
- A J Huang
- Department of Hematology, Institute of Hematology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - L B Wang
- Department of Hematology, Institute of Hematology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - J Du
- Department of Hematology, Changzheng Hospital, Second Military Medical University, Shanghai 200433, China
| | - G S Tang
- Department of Hematology, Institute of Hematology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - H Cheng
- Department of Hematology, Institute of Hematology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - S L Gong
- Department of Hematology, Institute of Hematology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - L Gao
- Department of Hematology, Institute of Hematology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - H Y Qiu
- Department of Hematology, Institute of Hematology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - X Ni
- Department of Hematology, Institute of Hematology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - J Chen
- Department of Hematology, Institute of Hematology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - L Chen
- Department of Hematology, Institute of Hematology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - W P Zhang
- Department of Hematology, Institute of Hematology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - J M Wang
- Department of Hematology, Institute of Hematology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - J M Yang
- Department of Hematology, Institute of Hematology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - X X Hu
- Department of Hematology, Institute of Hematology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
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Lin CY, Ruan P, Li R, Yang JM, See S, Song J, Akutsu T. Deep learning with evolutionary and genomic profiles for identifying cancer subtypes. J Bioinform Comput Biol 2019; 17:1940005. [DOI: 10.1142/s0219720019400055] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Cancer subtype identification is an unmet need in precision diagnosis. Recently, evolutionary conservation has been indicated to contain informative signatures for functional significance in cancers. However, the importance of evolutionary conservation in distinguishing cancer subtypes remains largely unclear. Here, we identified the evolutionarily conserved genes (i.e. core genes) and observed that they are primarily involved in cellular pathways relevant to cell growth and metabolisms. By using these core genes, we developed two novel strategies, namely a feature-based strategy (FES) and an image-based strategy (IMS) by integrating their evolutionary and genomic profiles with the deep learning algorithm. In comparison with the FES using the random set and the strategy using the PAM50 classifier, the core gene set-based FES achieved a higher accuracy for identifying breast cancer subtypes. The IMS and FES using the core gene set yielded better performances than the other strategies, in terms of classifying both breast cancer subtypes and multiple cancer types. Moreover, the IMS is reproducible even using different gene expression data (i.e. RNA-seq and microarray). Comprehensive analysis of eight cancer types demonstrates that our evolutionary conservation-based models represent a valid and helpful approach for identifying cancer subtypes and the core gene set offers distinguishable clues of cancer subtypes.
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Affiliation(s)
- Chun-Yu Lin
- Bioinformatics Center, Institute for Chemical Research, Kyoto University, Uji, Kyoto 6110011, Japan
| | - Peiying Ruan
- NVIDIA AI Technology Center, NVIDIA Corporation Japan, Tokyo 1070052, Japan
| | - Ruiming Li
- Bioinformatics Center, Institute for Chemical Research, Kyoto University, Uji, Kyoto 6110011, Japan
| | - Jinn-Moon Yang
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu 300, Taiwan
| | - Simon See
- NVIDIA AI Technology Center, NVIDIA Corporation Singapore, Singapore 138522, Singapore
| | - Jiangning Song
- Monash Biomedicine Discovery Institute and Department of Biochemistry & Molecular Biology, Monash University, Melbourne, VIC 3800, Australia
| | - Tatsuya Akutsu
- Bioinformatics Center, Institute for Chemical Research, Kyoto University, Uji, Kyoto 6110011, Japan
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Lee CC, Chang WH, Chang YS, Yang JM, Chang CS, Hsu KC, Chen YT, Liu TY, Chen YC, Lin SY, Wu YC, Chang JG. Alternative splicing in human cancer cells is modulated by the amiloride derivative 3,5-diamino-6-chloro-N-(N-(2,6-dichlorobenzoyl)carbamimidoyl)pyrazine-2-carboxide. Mol Oncol 2019; 13:1744-1762. [PMID: 31152681 PMCID: PMC6670021 DOI: 10.1002/1878-0261.12524] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 04/30/2019] [Accepted: 05/30/2019] [Indexed: 12/11/2022] Open
Abstract
Alternative splicing (AS) is a process that enables the generation of multiple protein isoforms with different biological properties from a single mRNA. Cancer cells often use the maneuverability conferred by AS to produce proteins that contribute to growth and survival. In our previous studies, we identified that amiloride modulates AS in cancer cells. However, the effective concentration of amiloride required to modulate AS is too high for use in cancer treatment. In this study, we used computational algorithms to screen potential amiloride derivatives for their ability to regulate AS in cancer cells. We found that 3,5-diamino-6-chloro-N-(N-(2,6-dichlorobenzoyl)carbamimidoyl)pyrazine-2-carboxamide (BS008) can regulate AS of apoptotic gene transcripts, including HIPK3, SMAC, and BCL-X, at a lower concentration than amiloride. This splicing regulation involved various splicing factors, and it was accompanied by a change in the phosphorylation state of serine/arginine-rich proteins (SR proteins). RNA sequencing was performed to reveal that AS of many other apoptotic gene transcripts, such as AATF, ATM, AIFM1, NFKB1, and API5, was also modulated by BS008. In vivo experiments further indicated that treatment of tumor-bearing mice with BS008 resulted in a marked decrease in tumor size. BS008 also had inhibitory effects in vitro, either alone or in a synergistic combination with the cytotoxic chemotherapeutic agents sorafenib and nilotinib. BS008 enabled sorafenib dose reduction without compromising antitumor activity. These findings suggest that BS008 may possess therapeutic potential for cancer treatment.
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Affiliation(s)
- Chien-Chin Lee
- Epigenome Research Center, China Medical University Hospital, Taichung, Taiwan
| | - Wen-Hsin Chang
- Epigenome Research Center, China Medical University Hospital, Taichung, Taiwan.,Department of Primary Care Medicine, Taipei Medical University Hospital, Taiwan
| | - Ya-Sian Chang
- Epigenome Research Center, China Medical University Hospital, Taichung, Taiwan.,Department of Laboratory Medicine, China Medical University Hospital, Taichung, Taiwan.,Center for Precision Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Jinn-Moon Yang
- TIGP-Bioinformatics, Institute of Information Science, Academia Sinica, Taipei, Taiwan.,Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, Taiwan.,Department of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan
| | - Chih-Shiang Chang
- Graduate Institute of Pharmaceutical Chemistry, China Medical University, Taichung, Taiwan
| | - Kai-Cheng Hsu
- Graduate Institute of Cancer Molecular Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taiwan
| | - Yun-Ti Chen
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, Taiwan
| | - Ting-Yuan Liu
- Department of Laboratory Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Yu-Chia Chen
- Department of Laboratory Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Shyr-Yi Lin
- Department of Primary Care Medicine, Taipei Medical University Hospital, Taiwan.,Department of General Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taiwan.,TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taiwan
| | - Yang-Chang Wu
- Graduate Institute of Natural Products, Kaohsiung Medical University, Taiwan.,Research Center for Natural Products and Drug Development, Kaohsiung Medical University, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital, Taiwan.,Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung, Taiwan
| | - Jan-Gowth Chang
- Epigenome Research Center, China Medical University Hospital, Taichung, Taiwan.,Department of Primary Care Medicine, Taipei Medical University Hospital, Taiwan.,Department of Laboratory Medicine, China Medical University Hospital, Taichung, Taiwan
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Peng D, Jin Y, Fan XD, Yang JM, Zhai C. An effective experimental method and apparatus for unsteady water vapor condensation investigation in high speed expansion flow. Rev Sci Instrum 2019; 90:063101. [PMID: 31255013 DOI: 10.1063/1.5050070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 05/17/2019] [Indexed: 06/09/2023]
Abstract
This paper presents an effective experimental method and system for mechanism study of unsteady water vapor condensation encountered in high speed expansion flow. We proposed an experimental method and designed a simplified expansion system to fulfill the study. Tunable diode laser absorption spectroscopy (TDLAS) and light sheet technique are integrated in the system to monitor the unsteady condensation process in a high speed expansion flow generated by the expansion system. Two near infrared water vapor absorption transitions (1395.0 nm and 1409.27 nm) and one near infrared methane absorption transition (1653.73 nm) are applied in the TDLAS measurement to measure the transient flow parameters during the condensation process. Using the experimental method, time dependent condensation processes are monitored with different expansion time scales. The light sheet results visually reveal the condensation phenomena during the expansion process, while TDLAS results quantitatively follow the condensation process. The experimental results are compared with computational fluid dynamics simulations and a good agreement between them is observed, which indicates that the presented experimental method and system is effective in investigating unsteady water vapor condensation in high speed expansion flow.
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Affiliation(s)
- D Peng
- Department of Precise Machinery and Precise Instrument, University of Science and Technology of China, Hefei, Anhui 230027, People's Republic of China
| | - Y Jin
- Experiment Center of Engineering and Material Science, University of Science and Technology of China, Hefei, Anhui 230027, People's Republic of China
| | - X D Fan
- Department of Modern Mechanics, University of Science and Technology of China, Hefei, Anhui 230027, People's Republic of China
| | - J M Yang
- Department of Modern Mechanics, University of Science and Technology of China, Hefei, Anhui 230027, People's Republic of China
| | - C Zhai
- Experiment Center of Engineering and Material Science, University of Science and Technology of China, Hefei, Anhui 230027, People's Republic of China
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60
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Lee JY, Lin SY, Lin CY, Chuang YH, Huang SH, Tseng YY, Wang HJ, Yang JM. Identification of the PCA29 gene signature as a predictor in prostate cancer. J Bioinform Comput Biol 2019; 17:1940006. [PMID: 31288639 DOI: 10.1142/s0219720019400067] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Prostate cancer (PCa) is the second leading cause of cancer death among men worldwide. About 70% of PCa patients were diagnosed at later stage, and metastasis has been observed. Additionally, the cure rate of PCa closely relies on the early diagnosis with biomarkers. The identification of biomarkers for diagnosis and prognosis is an urgent clinical issue for PCa. Here, we developed a novel scoring strategy, including cluster score (CS) and predicting score (PS), to identify 29 PCa genes (called PCa29) for early diagnostic biomarkers from two datasets in Gene Expression Omnibus. The result indicates that PCa29 can discriminate between normal and tumor tissues and are specific for prostate cancer. To validate PCa29, we found that 97% of PCa29 were consistently significant with these gene expressions in The Cancer Genome Atlas; furthermore, ∼ 70% of PCa29 are consensus to the protein expression in The Human Protein Atlas. Finally, we examined 10 genes in PCa29 on three PCa cell lines by real-time quantitative polymerase chain reaction. The experimental results show that the trend of the differential PCa29 expression is consistent with the analyzed results from our novel scoring method. We believe that our method is useful and PCa29 are potential biomarkers that provide the clues to develop targeting therapy for PCa.
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Affiliation(s)
- Jung-Yu Lee
- * Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu 300, Taiwan
| | - Si-Yu Lin
- * Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu 300, Taiwan
| | - Chun-Yu Lin
- † Bioinformatics Center, Institute for Chemical Research, Kyoto University, Kyoto 611-0011, Japan
| | - Yi-Huan Chuang
- * Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu 300, Taiwan
| | - Sing-Han Huang
- * Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu 300, Taiwan
| | - Yu-Yao Tseng
- * Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu 300, Taiwan
| | - Hung-Jung Wang
- ‡ Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli 350, Taiwan
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Zhang Y, Zhang YM, Chen Q, Tang GS, Qiu HY, Gao L, Chen J, Ni X, Chen L, Zhang WP, Yang JM, Wang JM, Hu XX. [Minimal residual disease before post-remission therapy predicts outcomes in younger adult with intermediate-risk acute myeloid leukemia]. Zhonghua Xue Ye Xue Za Zhi 2019; 40:147-151. [PMID: 30831632 PMCID: PMC7342654 DOI: 10.3760/cma.j.issn.0253-2727.2019.02.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Indexed: 01/04/2023]
Affiliation(s)
- Y Zhang
- Department of Hematology, Changhai Hospital, the Second Military Medical University; Institute of Hematologic Disease of Chinese PLA, Shanghai 200433, China
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62
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Wang WQ, Yang JM. [Psychoacoustic and clinical features of patients with idiopathic tinnitus]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 32:1651-1655. [PMID: 30400690 DOI: 10.13201/j.issn.1001-1781.2018.21.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Indexed: 11/12/2022]
Abstract
Objective:The aim of this study is to explore the psychoacoustic and clinical features of patients with idiopathic tinnitus, to understand the relationship and regularity between tinnitus frequency, loudness and hearing loss, and to provide a basis for personalized diagnosis and treatment of tinnitus.Method:A total of 110 patients with idiopathic tinnitus underwent systematic otological professional examination,audiological examination, tinnitus refinement examination, medical history inquiry and tinnitus disability scale(THI) survey.Result:Tinnitus more frequently occurred between 20 to 60 years of age(95.45%),a significant decrease in people under the age of 20 and over the age of 60;67 cases(60.9%) of the tinnitus frequency were completely consistent with the maximum frequency of hearing loss, The Pearson test showed that tinnitus frequency was correlated to frequency of hearing loss (r=0.989,P<0.05).Tinnitus loudness pitch results are mostly concentrated between 40-60dBSL, The Pearson test showed that tinnitus loudness was correlated to hearing loss(r=0.932,P<0.05);The total effective rate of sound therapy was 67.3%,There was a correlation between Residual inhibition and sound therapy(r=0.438,P<0.05); No statistic difference was found between THI scores and Tinnitus duration (r=-0.047,P>0.05).Conclusion:There was a correlation between tinnitus pitch and hearing loss.Residual inhibition may indicate the effectiveness of the sound therapy and may affect the patient's THI score. Full Precision Test can provide clinical reference for early detection of hearing loss in tinnitus patients.
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Affiliation(s)
- W Q Wang
- Department of Otorhinolaryngology Head and Neck Surgery,the Second Affiliated Hospital of Anhui Medical University,Hefei,230000,China
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63
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Yang JM, Yao JT, Zhang JY, Wang Y, Sun X, Wang KK, Tian Y. Comparative assessment of atherosclerosis of rabbit femoral artery by Duplex Ultrasound Scanning, Optical Coherence Tomography and Fractional Flow Reserve. J BIOL REG HOMEOS AG 2018; 32:1533-1538. [PMID: 30574761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Duplex Ultrasound Scanning (DUS), Frequency-domain optical coherence tomography (FD-OCT) and fractional flow reserve (FFR) remarkably shape our understanding of the significance of coronary stenosis. The present study aimed to compare the assessment results of the atherosclerotic lesions in rabbit superficial femoral artery by DUS with that of FD-OCT and FFR. A total of 20 atherosclerotic lesions were analyzed. Morphological assessments were prospectively compared through DUS, FD-OCT and quantitative superficial femoral angiography (QFA). In addition, the correlation between DUS derived lesion parameters and FFR was determined. The results show that, compared with FD-OCT and QFA, DUS detected larger reference diameter and higher percent stenosis. However, the minimal lumen diameter (MLD) and distance from profunda femoris to MLD were equivalent measured by the three imaging modalities. There was a poor correlation between FFR and DUS-derived percent diameter stenosis (R2=0.198, P=0.049). In conclusion, hemodynamic significance of lesions assessed by FFR was only related with percent diameter stenosis measured by DUS.
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Affiliation(s)
- J M Yang
- Cardiac Ultrasonography Room, the First Affiliated Hospital, Cardiovascular Institute, Harbin Medical University, Harbin, P.R. China
| | - J T Yao
- Department of Cardiology, the First Affiliated Hospital, Cardiovascular Institute, Harbin Medical University, Harbin, P.R. China
| | - J Y Zhang
- Department of Cardiology, the First Affiliated Hospital, Cardiovascular Institute, Harbin Medical University, Harbin, P.R. China
| | - Y Wang
- Department of Cardiology, the First Affiliated Hospital, Cardiovascular Institute, Harbin Medical University, Harbin, P.R. China
| | - X Sun
- Department of Cardiology, the First Affiliated Hospital, Cardiovascular Institute, Harbin Medical University, Harbin, P.R. China
| | - K K Wang
- Department of Ultrasound, the First Affiliated Hospital, Harbin Medical University, Harbin P.R. China
| | - Y Tian
- Cardiac Ultrasonography Room, the First Affiliated Hospital, Cardiovascular Institute, Harbin Medical University, Harbin, P.R. China
- Department of Cardiology, the First Affiliated Hospital, Cardiovascular Institute, Harbin Medical University, Harbin, P.R. China
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Yoo SH, Kwon JH, Nam SW, Kim HY, Kim CW, You CR, Choi SW, Cho SH, Han JY, Song DS, Chang UI, Yang JM, Lee HL, Lee SW, Han NI, Kim SH, Song MJ, Hwang S, Sung PS, Jang JW, Bae SH, Choi JY, Yoon SK. Early development of de novo hepatocellular carcinoma after direct-acting agent therapy: Comparison with pegylated interferon-based therapy in chronic hepatitis C patients. J Viral Hepat 2018; 25:1189-1196. [PMID: 29660199 DOI: 10.1111/jvh.12918] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 03/26/2018] [Indexed: 01/18/2023]
Abstract
Patients with chronic hepatitis C who achieve a sustained viral response after pegylated interferon therapy have a reduced risk of hepatocellular carcinoma, but the risk after treatment with direct-acting antivirals is unclear. We compared the rates of early development of hepatocellular carcinoma after direct-acting antivirals and after pegylated interferon therapy. We retrospectively analysed 785 patients with chronic hepatitis C who had no history of hepatocellular carcinoma (211 treated with pegylated interferon, 574 with direct-acting antivirals) and were followed up for at least 24 weeks after antiviral treatment. De novo hepatocellular carcinoma developed in 6 of 574 patients receiving direct-acting antivirals and in 1 of 211 patients receiving pegylated interferon. The cumulative incidence of early hepatocellular carcinoma development did not differ between the treatment groups either for the whole cohort (1.05% vs 0.47%, P = .298) or for those patients with Child-Pugh Class A cirrhosis (3.73% vs 2.94%, P = .827). Multivariate analysis indicated that alpha-fetoprotein level >9.5 ng/mL at the time of end-of-treatment response was the only independent risk factor for early development of hepatocellular carcinoma in all patients (P < .0001, hazard ratio 176.174, 95% confidence interval 10.768-2882.473) and in patients treated with direct-acting agents (P < .0001, hazard ratio 128.402, 95% confidence interval 8.417-1958.680). In conclusion, the rate of early development of hepatocellular carcinoma did not differ between patients treated with pegylated interferon and those treated with direct-acting antivirals and was associated with the serum alpha-fetoprotein level at the time of end-of-treatment response.
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Affiliation(s)
- S H Yoo
- Department of Internal Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Incehon, Korea.,Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea
| | - J H Kwon
- Department of Internal Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Incehon, Korea.,Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea
| | - S W Nam
- Department of Internal Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Incehon, Korea.,Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea
| | - H Y Kim
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu, Korea
| | - C W Kim
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu, Korea
| | - C R You
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, St. Paul's Hospital, The Catholic University of Korea, Seoul, Korea
| | - S W Choi
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, St. Paul's Hospital, The Catholic University of Korea, Seoul, Korea
| | - S H Cho
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Yeouido St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - J-Y Han
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Yeouido St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - D S Song
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, St. Vincent's Hospital, The Catholic University of Korea, Suwon, Korea
| | - U I Chang
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, St. Vincent's Hospital, The Catholic University of Korea, Suwon, Korea
| | - J M Yang
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, St. Vincent's Hospital, The Catholic University of Korea, Suwon, Korea
| | - H L Lee
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Bucheon St. Mary's Hospital, The Catholic University of Korea, Bucheon, Korea
| | - S W Lee
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Bucheon St. Mary's Hospital, The Catholic University of Korea, Bucheon, Korea
| | - N I Han
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Bucheon St. Mary's Hospital, The Catholic University of Korea, Bucheon, Korea
| | - S-H Kim
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Daejeon St. Mary's Hospital, The Catholic University of Korea, Daejeon, Korea
| | - M J Song
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Daejeon St. Mary's Hospital, The Catholic University of Korea, Daejeon, Korea
| | - S Hwang
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - P S Sung
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - J W Jang
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - S H Bae
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - J Y Choi
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - S K Yoon
- Catholic University Liver Research Center, The Catholic University of Korea, Seoul, Korea.,Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
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Wu K, Zhang Y, Zhang H, Tan ZH, Guo XH, Yang JM. [Germline gene testing of the RET, VHL, SDHD and SDHB genes in patients with pheochromocytoma/paraganglioma]. Beijing Da Xue Xue Bao Yi Xue Ban 2018; 50:634-639. [PMID: 30122763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To analyze the germline variations of genes RET, VHL, SDHD and SDHB in patients with pheochromocytoma and/or paraganglioma and to evaluate variations of these genes in Chinese patients. METHODS Patients who were treated in Peking University First Hospital from September 2012 to March 2014 and diagnosed with pheochromocytoma and/or paraganglioma by pathologists were included in this study. Twelve patients were included in total, of whom 11 had pheochromocytoma, and 1 had paraganglioma. Deoxyribonucleic acid (DNA) was extracted from the leukocytes of peripheral blood of the patients. The exons 10, 11, 13-16 of the RET gene, and all exons of VHL, SDHB and SDHD genes and their nearby introns (±20 bp) were amplified with polymerase chain reactions, and the products were sent to a biotechnology company for sequencing. The sequencing results were compared with wildtype sequences of these genes to identify variations. One of the patients was diagnosed with multiple endocrine neoplasia type 2A. A family analysis was performed in his kindred, and his family members received genetic tests for the related variations. RESULTS Three patients were found to have germline gene variations. A c.136C>T (p.R46X) variation of the SDHB gene was found in a patient with malignant pheochromocytoma. A c.1901G>A (C634Y) variation, as well as c.2071G>A (p.G691S) and c.2712C>G (p.S904S) variations of the RET gene were found in a patient with multiple endocrine neoplasia type 2A. After a family analysis, five family members of this patient were found to have the same variations. c.2071G>A (p.G691S) and c.2712C>G (p.S904S) variations of the RET gene were also found in a clinical sporadic patient without evidence of malignancy. A patient with congenital single ventricle malformation and pheochromocytoma was included in this study, and no variation with clinical significance was found in the four genes of this patient. CONCLUSION 25% (3/12) patients with pheochromocytoma or paraganglioma were found to have missense or nonsense germline gene variations in this study, including the c.136C>T (p.R46X) variation of the SDHB gene, the c.1901G>A (C634Y) variation of the RET gene, and c.2071G>A (p.G691S) and c.2712C>G (p.S904S) variations of the RET gene. The former two variations have already been confirmed to be pathogenic. The existence of these variations in Chinese patients with pheochromocytoma and/or paraganglioma was validated in this study, which supports the conclusion that genetic testing is necessary to be generally performed in patients with pheochromocytoma and/or paraganglioma.
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Affiliation(s)
- K Wu
- Department of Endocrinology, Peking University First Hospital, Beijing 100034, China
| | - Y Zhang
- Department of Endocrinology, Peking University First Hospital, Beijing 100034, China
| | - H Zhang
- Department of Endocrinology, Peking University First Hospital, Beijing 100034, China
| | - Z H Tan
- Department of Endocrinology, Handan Central Hospital, Handan 056001, Hebei, China
| | - X H Guo
- Department of Endocrinology, Peking University First Hospital, Beijing 100034, China
| | - J M Yang
- Department of Endocrinology, Peking University First Hospital, Beijing 100034, China
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Mei JY, Yang JM, Yu JW, Huang S, Xu Y, Liu L, Liu YH. [Diagnosis and treatment of basal cell adenoma of parotid gland]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 32:341-344. [PMID: 29798290 DOI: 10.13201/j.issn.1001-1781.2018.05.006] [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] [Received: 01/13/2018] [Indexed: 11/12/2022]
Abstract
Objective:To investigate the clinical features, diagnosis and treatment experience of basal cell adenoma (BCA).Method:The clinical data of 7 patients with basal cell adenoma of the parotid gland from the Second Affiliated Hospital of Medical University of Anhui from March 2012 to June 2016 were retrospectively analyzed. Combined with literature review, the experience of diagnosis and treatment was discussed.Result:Seven BCA were mostly diagnosed as pleomorphic adenoma and adenomatous lymphoma before operation using parotid ultrasound, fine needle aspiration cytology and parotid enhanced CT, and no patients was diagnosed as BCA prior to the operation. Four cases were diagnosed as BCA, 1 case was diagnosed as adenoma, 1 case was diagnosed as low-grade malignant tumor, and 1 case was not able to identify benign or malignant tumor by intraoperative fast frozen pathological examination. There were no obvious complications after the operation, and only 2 cases of mild facial paralysis returned to normal in 1 month, and no recurrence was found in the follow-up 18-69 months. Conclusion:Basal cell adenoma of the parotid gland is a rare benign tumor of parotid gland, the lack of specific clinical manifestations and signs, preoperative ultrasonography, fine needle aspiration cytology and parotid gland enhanced CT scan can not confirm the diagnosis, although they have some limitations, they are of great value in the localization, qualitative and differential diagnosis of BCA in the parotid gland. The diagnosis mainly depends on intraoperative, postoperative pathology and immunohistochemical examination. The treatment is mainly surgical excision, and the prognosis is better.
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Affiliation(s)
- J Y Mei
- Department of OtorhinolaryngologyHead and Neck Surgery, the Second Affiliated Hospital of Anhui Medical University, Hefei, 230022, China
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Huang SH, Lo YS, Luo YC, Tseng YY, Yang JM. A homologous mapping method for three-dimensional reconstruction of protein networks reveals disease-associated mutations. BMC Syst Biol 2018; 12:13. [PMID: 29560828 PMCID: PMC5861491 DOI: 10.1186/s12918-018-0537-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
BACKGROUND One of the crucial steps toward understanding the associations among molecular interactions, pathways, and diseases in a cell is to investigate detailed atomic protein-protein interactions (PPIs) in the structural interactome. Despite the availability of large-scale methods for analyzing PPI networks, these methods often focused on PPI networks using genome-scale data and/or known experimental PPIs. However, these methods are unable to provide structurally resolved interaction residues and their conservations in PPI networks. RESULTS Here, we reconstructed a human three-dimensional (3D) structural PPI network (hDiSNet) with the detailed atomic binding models and disease-associated mutations by enhancing our PPI families and 3D-domain interologs from 60,618 structural complexes and complete genome database with 6,352,363 protein sequences across 2274 species. hDiSNet is a scale-free network (γ = 2.05), which consists of 5177 proteins and 19,239 PPIs with 5843 mutations. These 19,239 structurally resolved PPIs not only expanded the number of PPIs compared to present structural PPI network, but also achieved higher agreement with gene ontology similarities and higher co-expression correlation than the ones of 181,868 experimental PPIs recorded in public databases. Among 5843 mutations, 1653 and 790 mutations involved in interacting domains and contacting residues, respectively, are highly related to diseases. Our hDiSNet can provide detailed atomic interactions of human disease and their associated proteins with mutations. Our results show that the disease-related mutations are often located at the contacting residues forming the hydrogen bonds or conserved in the PPI family. In addition, hDiSNet provides the insights of the FGFR (EGFR)-MAPK pathway for interpreting the mechanisms of breast cancer and ErbB signaling pathway in brain cancer. CONCLUSIONS Our results demonstrate that hDiSNet can explore structural-based interactions insights for understanding the mechanisms of disease-associated proteins and their mutations. We believe that our method is useful to reconstruct structurally resolved PPI networks for interpreting structural genomics and disease associations.
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Affiliation(s)
- Sing-Han Huang
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, 30050, Taiwan
| | - Yu-Shu Lo
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, 30050, Taiwan
| | - Yong-Chun Luo
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, 30050, Taiwan
| | - Yu-Yao Tseng
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, 30050, Taiwan
| | - Jinn-Moon Yang
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, 30050, Taiwan. .,Department of Biological Science and Technology, National Chiao Tung University, Hsinchu, 30050, Taiwan.
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Huang LC, Lin CL, Qiu JZ, Lin CY, Hsu KW, Tam KW, Lee JY, Yang JM, Lee CH. Nicotinic Acetylcholine Receptor Subtype Alpha-9 Mediates Triple-Negative Breast Cancers Based on a Spontaneous Pulmonary Metastasis Mouse Model. Front Cell Neurosci 2017; 11:336. [PMID: 29163048 PMCID: PMC5675882 DOI: 10.3389/fncel.2017.00336] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 10/12/2017] [Indexed: 01/03/2023] Open
Abstract
Triple-negative breast cancer (TNBC) subtype is associated with poor prognosis and a high risk of recurrence-related death in women. Despite the aggressiveness of TNBCs, targeted TNBC therapy is not yet available in the clinic. To overcome this challenge, we generated highly metastatic TNBC cells (LM) derived from metastasized lung cells via a serial spontaneous pulmonary metastasis animal model to identify targetable molecules for attenuating the progression of TNBC metastasis. Gene analysis of primary tumor (P), first-round (1LM) and second-round (2LM) metastasized lung cells revealed that mesenchymal-related genes were significantly expressed in LM cells, especially in 2LM cells. Interestingly, α9-nAChR gene expression was also dramatically induced in LM cells, confirming our previous finding that α9-nAChR plays important roles in receptor-mediated carcinogenic signals in human breast cancer development. Using α9-nAChR as a biomarker, we transfected 2LM cells with CRISPR/Cas9 lentivirus targeting the α9-nAChR genomic region (2LM-α9-nAChR-null), showing that mesenchymal markers and the migration and invasion abilities of 2LM cells were significantly attenuated in 2LM-α9-nAChR-null cells both in vitro and in vivo. In addition, the high efficiency of editing the α9-nAChR gene using a CRISPR/Cas9 lentivirus was demonstrated by gene sequencing, genomic indel frequency and protein expression analyses. Collectively, these results confirmed those of our previous study that advanced-stage breast tumors are associated with substantially higher levels of α9-nAChR gene expression, indicating that α9-nAChR expression is essential for mediating TNBC metastasis during cancer development and may potentially act as a biomarker for targeted therapy in clinical investigations.
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Affiliation(s)
- Li-Chi Huang
- Department of Endocrinology, Cathay General Hospital, Taipei, Taiwan
| | - Ching-Ling Lin
- Department of Endocrinology, Cathay General Hospital, Taipei, Taiwan
| | - Jia-Zheng Qiu
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Chun-Yu Lin
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, Taiwan
| | - Kai-Wen Hsu
- Research Center for Tumor Medical Science, China Medical University, Taichung, Taiwan
| | - Ka-Wai Tam
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Division of General Surgery, Department of Surgery, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan.,Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Jung-Yu Lee
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, Taiwan
| | - Jinn-Moon Yang
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, Taiwan.,Department of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan
| | - Chia-Hwa Lee
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan.,Department of Laboratory Medicine, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan.,Comprehensive Cancer Center of Taipei Medical University, Taipei, Taiwan
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69
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Lai WS, Cheng SY, Lin YY, Yang PL, Lin HC, Cheng LH, Yang JM, Lee JC. Clinical assessment of diode laser-assisted endoscopic intrasphenoidal vidian neurectomy in the treatment of refractory rhinitis. Lasers Med Sci 2017; 32:2097-2104. [PMID: 28975430 DOI: 10.1007/s10103-017-2330-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 09/18/2017] [Indexed: 02/05/2023]
Abstract
For chronic rhinitis that is refractory to medical therapy, surgical intervention such as endoscopic vidian neurectomy (VN) can be used to control the intractable symptoms. Lasers can contribute to minimizing the invasiveness of ENT surgery. The aim of this retrospective study is to compare in patients who underwent diode laser-assisted versus traditional VN in terms of operative time, surgical field, quality of life, and postoperative complications. All patients had refractory rhinitis with a poor treatment response to a 6-month trial of corticosteroid nasal sprays and underwent endoscopic VN between November 2006 and September 2015. They were non-randomly allocated into either a cold instrument group or a diode laser-assisted group. Vidian nerve was excised with a 940-nm continuous wave diode laser through a 600-μm silica optical fiber, utilizing a contact mode with the power set at 5 W. A visual analog scale (VAS) was used to grade the severity of the rhinitis symptoms for quality of life assessment before the surgery and 6 months after. Of the 118 patients enrolled in the study, 75 patients underwent cold instrument VN and 43 patients underwent diode laser-assisted VN. Patients in the laser-assisted group had a significantly lower surgical field score and a lower postoperative bleeding rate than those in the cold instrument group. Changes in the VAS were significant in preoperative and postoperative nasal symptoms in each group. The application of diode lasers for vidian nerve transection showed a better surgical field and a lower incidence of postoperative hemorrhage. Recent advancements in laser application and endoscopic technique has made VN safer and more effective. We recommend this surgical approach as a reliable and effective treatment for patients with refractory rhinitis.
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Affiliation(s)
- Wen-Sen Lai
- Department of Otolaryngology-Head and Neck Surgery, Tri-Service General Hospital, National Defense Medical Center, 325, Cheng-Kung Road, Sec. 2, Neihu District, Taipei, 114, Taiwan.,Department of Otolaryngology-Head and Neck Surgery, Taichung Armed Forces General Hospital, Taichung, Taiwan.,Department of Biological Science and Technology, Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, Taiwan
| | - Sheng-Yao Cheng
- Department of Otolaryngology-Head and Neck Surgery, Tri-Service General Hospital, National Defense Medical Center, 325, Cheng-Kung Road, Sec. 2, Neihu District, Taipei, 114, Taiwan
| | - Yuan-Yung Lin
- Department of Otolaryngology-Head and Neck Surgery, Tri-Service General Hospital, National Defense Medical Center, 325, Cheng-Kung Road, Sec. 2, Neihu District, Taipei, 114, Taiwan
| | - Pei-Lin Yang
- School of Nursing, National Defense Medical Center, Taipei, Taiwan
| | - Hung-Che Lin
- Department of Otolaryngology-Head and Neck Surgery, Tri-Service General Hospital, National Defense Medical Center, 325, Cheng-Kung Road, Sec. 2, Neihu District, Taipei, 114, Taiwan
| | - Li-Hsiang Cheng
- Department of Otolaryngology-Head and Neck Surgery, Tri-Service General Hospital, National Defense Medical Center, 325, Cheng-Kung Road, Sec. 2, Neihu District, Taipei, 114, Taiwan.,Department of Biological Science and Technology, Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, Taiwan
| | - Jinn-Moon Yang
- Department of Biological Science and Technology, Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, Taiwan
| | - Jih-Chin Lee
- Department of Otolaryngology-Head and Neck Surgery, Tri-Service General Hospital, National Defense Medical Center, 325, Cheng-Kung Road, Sec. 2, Neihu District, Taipei, 114, Taiwan. .,Department of Biological Science and Technology, Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, Taiwan.
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70
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Lin HC, Huang YS, Chu YH, Liu SC, Shangkuan WC, Lai WS, Yang JM, Lin YS, Ma KH, Lee JC. Vascular anatomy is a determining factor of successful submental flap raising: a retrospective study of 70 clinical cases. PeerJ 2017; 5:e3606. [PMID: 28948094 PMCID: PMC5609627 DOI: 10.7717/peerj.3606] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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: 04/12/2017] [Accepted: 07/02/2017] [Indexed: 11/20/2022] Open
Abstract
The vascular anatomy of submental flaps (SFs) represents a determining factor in successful SF raising. However, little attention has been focused on the venous return of SFs. Thus, the present study aimed to investigate SF venous return. This study enrolled patients who underwent SF reconstructive surgery in a tertiary referral center between November 2009 and October 2016. The drainage pathway of the SF venous return was routinely identified during the course of our operations to prevent damage during head and neck surgery. The venous return data of 70 patients were reviewed. The size of the flaps ranged from 15 to 84 cm2, and total flap loss was not observed in the case series. All of the submental arteries originated from the facial artery; however, the submental veins of 70 patients returned to either the internal jugular vein (IJV, 72.9%) or the external jugular vein (EJV, 27.1%). Our data suggest that drainage of the submental vein into the EJV, which has been previously overlooked, should receive greater attention during SF surgeries. The results support mandatory preservation of the EJV and IJV and indicate that vascular anatomy is a determining factor for successful SF raising.
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Affiliation(s)
- Hung-Che Lin
- Department of Otolaryngology-Head and Neck Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Yuahn-Sieh Huang
- Department of Biology and Anatomy, National Defense Medical Center, Taipei, Taiwan
| | - Yueng-Hsiang Chu
- Department of Otolaryngology-Head and Neck Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Shao-Cheng Liu
- Department of Otolaryngology-Head and Neck Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | | | - Wen-Sen Lai
- Department of Otolaryngology-Head and Neck Surgery, Taichung Armed Forces General Hospital, Taichung, Taiwan.,Department of Biological Science and Technology, Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, Taiwan
| | - Jinn-Moon Yang
- Department of Biological Science and Technology, Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, Taiwan
| | - Yaoh-Shiang Lin
- Department of Otolaryngology-Head and Neck Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan.,Department of Otolaryngology Head and Neck Surgery, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | - Kuo-Hsing Ma
- Department of Biology and Anatomy, National Defense Medical Center, Taipei, Taiwan
| | - Jih-Chin Lee
- Department of Otolaryngology-Head and Neck Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
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71
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Hsu KC, Hung HC, HuangFu WC, Sung TY, Eight Lin T, Fang MY, Chen IJ, Pathak N, Hsu JTA, Yang JM. Identification of neuraminidase inhibitors against dual H274Y/I222R mutant strains. Sci Rep 2017; 7:12336. [PMID: 28951584 PMCID: PMC5615050 DOI: 10.1038/s41598-017-12101-3] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 08/31/2017] [Indexed: 01/03/2023] Open
Abstract
Influenza is an annual seasonal epidemic that has continually drawn public attentions, due to the potential death toll and drug resistance. Neuraminidase, which is essential for the spread of influenza virus, has been regarded as a valid target for the treatment of influenza infection. Although neuraminidase drugs have been developed, they are susceptible to drug-resistant mutations in the sialic-binding site. In this study, we established computational models (site-moiety maps) of H1N1 and H5N1 to determine properties of the 150-cavity, which is adjacent to the drug-binding site. The models reveal that hydrogen-bonding interactions with residues R118, D151, and R156 and van der Waals interactions with residues Q136, D151, and T439 are important for identifying 150-cavitiy inhibitors. Based on the models, we discovered three new inhibitors with IC50 values <10 μM that occupies both the 150-cavity and sialic sites. The experimental results identified inhibitors with similar activities against both wild-type and dual H274Y/I222R mutant neuraminidases and showed little cytotoxic effects. Furthermore, we identified three new inhibitors situated at the sialic-binding site with inhibitory effects for normal neuraminidase, but lowered effects for mutant strains. The results suggest that the new inhibitors can be used as a starting point to combat drug-resistant strains.
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Affiliation(s)
- Kai-Cheng Hsu
- Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Hui-Chen Hung
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli, Taiwan
| | - Wei-Chun HuangFu
- Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Tzu-Ying Sung
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, Taiwan
| | - Tony Eight Lin
- Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Ming-Yu Fang
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli, Taiwan
| | - I-Jung Chen
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli, Taiwan
| | - Nikhil Pathak
- TIGP-Bioinformatics, Institute of Information Science, Academia Sinica, Taipei, Taiwan
| | - John T-A Hsu
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli, Taiwan. .,Department of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan.
| | - Jinn-Moon Yang
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, Taiwan. .,Department of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan.
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72
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Yang JM, Dang SN, Cheng Y, Qu PF, Zhang R, Lei FL, Zeng LX, Yan H. [Study of dietary patterns and their influence factors among singleton pregnant women in Shaanxi Province of China]. Zhonghua Yu Fang Yi Xue Za Zhi 2017; 51:766-768. [PMID: 28763930 DOI: 10.3760/cma.j.issn.0253-9624.2017.08.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Affiliation(s)
- J M Yang
- Department of Epidemiology and Health Statistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
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73
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Chen Y, Mi BB, Zhao YL, Yang JM, Tao YL, Yan H. [Prenatal exposure to outdoor air pollution and preterm birth: a Meta-analysis]. Zhonghua Liu Xing Bing Xue Za Zhi 2017; 37:880-5. [PMID: 27346121 DOI: 10.3760/cma.j.issn.0254-6450.2016.06.028] [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 assess the association between exposure to prenatal outdoor air pollution and preterm birth to provide evidence in setting up programs for prevention on premature birth. METHODS Case-control studies regarding association between pregnant exposure to outdoor air pollution and preterm birth were collected. Data were analyzed with Stata 12.0. RESULTS Ten articles including 48 556 cases and 548 495 controls were qualified for inclusion. RESULTS from Meta-analyses showed pooled ORs for exposure to NO2, PM10, CO, PM2.5, and NO during the entire pregnancy were 0.960 (95%CI: 0.935-0.985), 1.068 (95%CI: 1.035-1.103), 1.122 (95%CI: 1.078-1.168), 1.110 (95% CI: 1.043-1.181) and 0.994 (95% CI: 0.973-1.016). Association between air pollution and preterm birth varied with the periods of exposure. Pooled ORs for NO2, PM10 and SO2 exposure during the first trimester were 1.117 (95%CI: 1.052-1.186), 0.968 (95%CI: 0.812-1.153) and 1.258 (95%CI: 0.758-2.089). Pooled ORs for NO2, PM10, SO2 exposure during the second trimester were 1.000 (95% CI: 0.982-1.019), 1.127 (95% CI: 0.896-1.416) and 0.977 (95% CI: 0.711-1.342). Pooled ORs for NO2, PM10, SO2 exposure during the third trimester were 1.006 (95%CI: 1.002-1.010), 1.053 (95% CI: 0.973-1.139) and 1.003 (95% CI: 1.000-1.006). CONCLUSION Exposures to PM10, CO and PM2.5 during the entire pregnancy, to NO2 during the first trimester, or to NO2 and SO2 during the third trimester were associated with preterm births.
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Affiliation(s)
- Y Chen
- Department of Epidemiology and Biostatistics, School of Public Health, Health Science Center of Xi'an Jiaotong University, Xi'an 710061, China
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74
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Abstract
Background Computational drug design approaches are important for shortening the time and reducing the cost for drug discovery and development. Among these methods, molecular docking and quantitative structure activity relationship (QSAR) play key roles for lead discovery and optimization. Here, we propose an integrated approach with core strategies to identify the protein-ligand hot spots for QSAR models and lead optimization. These core strategies are: 1) to generate both residue-based and atom-based interactions as the features; 2) to identify compound common and specific skeletons; and 3) to infer consensus features for QSAR models. Results We evaluated our methods and new strategies on building QSAR models of human acetylcholinesterase (huAChE). The leave-one-out cross validation values q2 and r2 of our huAChE QSAR model are 0.82 and 0.78, respectively. The experimental results show that the selected features (resides/atoms) are important for enzymatic functions and stabling the protein structure by forming key interactions (e.g., stack forces and hydrogen bonds) between huAChE and its inhibitors. Finally, we applied our methods to arthrobacter globiformis histamine oxidase (AGHO) which is correlated to heart failure and diabetic. Conclusions Based on our AGHO QSAR model, we identified a new substrate verified by bioassay experiments for AGHO. These results show that our methods and new strategies can yield stable and high accuracy QSAR models. We believe that our methods and strategies are useful for discovering new leads and guiding lead optimization in drug discovery. Electronic supplementary material The online version of this article (doi:10.1186/s12864-017-3503-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Hui-Hui Hsu
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, 300, Taiwan
| | - Yen-Chao Hsu
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, 300, Taiwan
| | - Li-Jen Chang
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, 300, Taiwan
| | - Jinn-Moon Yang
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, 300, Taiwan. .,Department of Biological Science and Technology, National Chiao Tung University, Hsinchu, 300, Taiwan.
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75
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Lin CH, Wu YR, Yang JM, Chen WL, Chao CY, Chen IC, Lin TH, Wu YC, Hsu KC, Chen CM, Lee GC, Hsieh-Li HM, Lee CM, Lee-Chen GJ. Novel Lactulose and Melibiose Targeting Autophagy to Reduce PolyQ Aggregation in Cell Models of Spinocerebellar Ataxia 3. CNS Neurol Disord Drug Targets 2016; 15:351-9. [PMID: 26295831 DOI: 10.2174/1871527314666150821101522] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Accepted: 08/18/2015] [Indexed: 11/22/2022]
Abstract
Trehalose, a chemical chaperone and mTOR-independent autophagy enhancer, has shown promise in models of Huntington's disease, Parkinson's disease and tauopathies. In this study, two trehalase analogs, lactulose and melibiose, were examined for their potentials in spinocerebellar ataxia treatment. Using a SCA3 ATXN3/Q75-GFP cell model, we found that the ATXN3/Q75 aggregation was significantly prohibited by lactulose and melibiose because of their abilities to up-regulate autophagy. Meanwhile, lactulose and melibiose reduced reactive oxygen species production in ATXN3/Q75 cells. Both of them further inhibited the ATXN3/Q75 aggregation in neuronally differentiated SH-SY5Y cells. These findings suggest the therapeutic applications of novel trehalose analogs in polyglutamine aggregation-associated neurodegenerative diseases.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | - Chi-Mei Lee
- Department of Life Science, National Taiwan Normal University, Taipei, Taiwan.
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76
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Huang KW, Hsu KC, Chu LY, Yang JM, Yuan HS, Hsiao YY. Identification of Inhibitors for the DEDDh Family of Exonucleases and a Unique Inhibition Mechanism by Crystal Structure Analysis of CRN-4 Bound with 2-Morpholin-4-ylethanesulfonate (MES). J Med Chem 2016; 59:8019-29. [PMID: 27529560 DOI: 10.1021/acs.jmedchem.6b00794] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The DEDDh family of exonucleases plays essential roles in DNA and RNA metabolism in all kingdoms of life. Several viral and human DEDDh exonucleases can serve as antiviral drug targets due to their critical roles in virus replication. Here using RNase T and CRN-4 as the model systems, we identify potential inhibitors for DEDDh exonucleases. We further show that two of the inhibitors, ATA and PV6R, indeed inhibit the exonuclease activity of the viral protein NP exonuclease of Lassa fever virus in vitro. Moreover, we determine the crystal structure of CRN-4 in complex with MES that reveals a unique inhibition mechanism by inducing the general base His179 to shift out of the active site. Our results not only provide the structural basis for the inhibition mechanism but also suggest potential lead inhibitors for the DEDDh exonucleases that may pave the way for designing nuclease inhibitors for biochemical and biomedical applications.
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Affiliation(s)
- Kuan-Wei Huang
- Department of Biological Science and Technology, National Chiao Tung University , Hsinchu 30068, Taiwan, ROC.,Institute of Molecular Biology, Academia Sinica , Taipei 11529, Taiwan, ROC
| | - Kai-Cheng Hsu
- Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University , Taipei 11031, Taiwan
| | - Lee-Ya Chu
- Institute of Molecular Biology, Academia Sinica , Taipei 11529, Taiwan, ROC.,Chemical Biology and Molecular Biophysics Program, Taiwan International Graduate Program, Academia Sinica , Nankang, Taipei 11529, Taiwan.,Institute of Bioinformatics and Structural Biology, National Tsing Hua University , 101 Kuang-Fu Road Section 2, Hsinchu 30013, Taiwan
| | - Jinn-Moon Yang
- Department of Biological Science and Technology, National Chiao Tung University , Hsinchu 30068, Taiwan, ROC.,Institute of Bioinformatics and Systems Biology, National Chiao Tung University , Hsinchu, 30050, Taiwan.,Center for Bioinformatics Research, National Chiao Tung University , Hsinchu 30068, Taiwan
| | - Hanna S Yuan
- Institute of Molecular Biology, Academia Sinica , Taipei 11529, Taiwan, ROC
| | - Yu-Yuan Hsiao
- Department of Biological Science and Technology, National Chiao Tung University , Hsinchu 30068, Taiwan, ROC.,Institute of Bioinformatics and Systems Biology, National Chiao Tung University , Hsinchu, 30050, Taiwan.,Institute of Molecular Medicine and Bioengineering, National Chiao Tung University , Hsinchu 30068, Taiwan
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77
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Hsiao YY, Huang KW, Hsu KC, Chu LY, Yang JM, Yuan HS. Identification of inhibitors for the DEDDh family of exonucleases and a unique inhibition mechanism revealed by crystal structure analysis of CRN-4 bound with MES. Acta Crystallogr A Found Adv 2016. [DOI: 10.1107/s2053273316096911] [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: 11/10/2022] Open
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78
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Lou L, Zhu J, Lv D, Chen QR, Yang JM, Qin XL. [Modified radical mastoidectomy on"drum sinus" type chronic suppurative otitis media:our experience]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:1068-1071. [PMID: 29798041 DOI: 10.13201/j.issn.1001-1781.2016.13.016] [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] [Received: 04/27/2016] [Indexed: 02/05/2023]
Abstract
Objective:To our experience of modified radical mastoidectomy on "drum sinus" type chronic suppurative otitis media.Method:We measured the size of tympanic sinus,the extent of meningeal plate lowering and the extent of sigmoid ante-displacement in 54 patients of chronic suppurative otitis media,and determined the criterion of "drum sinus".The patients who comply with the criterion received modified radical mastoidectomy and tympanoplasty via epitympanum approach.The patients were followed up for at least 3 months,The time of dry ear,growth of repaired tympanic membrane,and any complications such as dizziness,facial paralysis,cerebrospinal fluid leakage were recorded.Result:Twenty-nine out of the 54 CSOM patients complied with the criterion of drum sinus.Two cases were lost to follow-up.Therefore,27 cases were included in the study.Three months after the operation,the rate of dry ear was 81.5% Tympanic membrane was successfully repaired in 77.8% of the patients.Three cases had dizziness after operation.No facial paralysis or cerebrospinal fluid leakage was observed.Conclusion:For"drum sinus" type chronic suppurative otitis media,the modified radical mastoidectomy and tympanoplasty via epitympanum approach can be taken.
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Affiliation(s)
- L Lou
- Department of Otolaryngology-Head and Neck Surgery,West China Hospital,Sichuan University,Chengdu,610041,China
| | - J Zhu
- Department of Otolaryngology,Tianfu New Area People's Hospital of Chengdu
| | - D Lv
- Department of Otolaryngology-Head and Neck Surgery,West China Hospital,Sichuan University,Chengdu,610041,China
| | - Q R Chen
- Department of Otolaryngology-Head and Neck Surgery,West China Hospital,Sichuan University,Chengdu,610041,China
| | - J M Yang
- Department of Otolaryngology-Head and Neck Surgery,West China Hospital,Sichuan University,Chengdu,610041,China
| | - X L Qin
- Department of Otolaryngology-Head and Neck Surgery,West China Hospital,Sichuan University,Chengdu,610041,China
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79
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Lee JC, Lai WS, Ju DT, Chu YH, Yang JM. Diode laser assisted minimal invasive sphenoidotomy for endoscopic transphenoidal pituitary surgery: our technique and results. Lasers Surg Med 2016; 47:239-42. [PMID: 25810080 DOI: 10.1002/lsm.22340] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/30/2014] [Indexed: 11/10/2022]
Abstract
BACKGROUND AND OBJECTIVE During endoscopic sinus surgery (ESS), intra-operative bleeding can significantly compromise visualization of the surgical field. The diode laser that provides good hemostatic and vaporization effects and excellent photocoagulation has been successfully applied in endoscopic surgery with several advantages. The current retrospective study demonstrates the feasibility of diode laser-combined endoscopic sinus surgery on sphenoidotomy. STUDY DESIGN/MATERIALS AND METHODS The patients who went through endoscopic transphenoidal pituitary surgery were enrolled. During the operation, the quality of the surgical field was assessed and graded by the operating surgeon using the scale proposed by Boezaart. RESULTS The mean operation time was 37.80 ± 10.90 minutes. The mean score on the quality of surgical field was 1.95. A positive correlation between the lower surgical field quality score and the shorter surgical time was found with statistical significance (P < 0.0001). No infections, hemorrhages, or other complications occurred intra- or post-operatively. CONCLUSION The diode laser-assisted sphenoidotomy is a reliable and safe approach of pituitary gland surgery with minimal invasiveness. It is found that application of diode laser significantly improved quality of surgical field and shortened operation time.
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Affiliation(s)
- Jih-Chin Lee
- Departmentof Otolaryngology-Head and Neck Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan; Department of Biological Science and Technology, Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, Taiwan
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80
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Yang JM, Sun GH, Zheng XD, Ren LH, Wang WJ, Li GR, Sun BC. Genetic differentiation of Octopus minor (Mollusca, Cephalopoda) off the northern coast of China as revealed by amplified fragment length polymorphisms. Genet Mol Res 2015; 14:15616-23. [PMID: 26634529 DOI: 10.4238/2015.december.1.13] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Octopus minor (Sasaki, 1920) is an economically important cephalopod that is found in the northern coastal waters of China. In this study, we investigated genetic differentiation in fishery populations using amplified fragment length polymorphisms (AFLPs). A total of 150 individuals were collected from five locations: Dalian (DL), Yan-tai (YT), Qingdao (QD), Lianyungang (LY), and Zhoushan (ZS), and 243 reproducible bands were amplified using five AFLP primer combinations. The percentage of polymorphic bands ranged from 53.33 to 76.08%. Nei's genetic identity ranged from 0.9139 to 0.9713, and the genetic distance ranged from 0.0291 to 0.0900. A phylogenetic tree was constructed using the unweighted pair group method with arithmetic mean, based on the genetic distance. The DL and YT populations originated from one clade, while the QD, LY, and ZS populations originated from another. The results indicate that the O. minor stock consisted of two genetic populations with an overall significantly analogous FST value (0.1088, P < 0.05). Most of the variance was within populations. These findings will be important for more sustainable octopus fisheries, so that this marine resource can be conserved for its long-term utilization.
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Affiliation(s)
- J M Yang
- Shandong Marine Resource and Environment Research Institute, Yantai, China
| | - G H Sun
- Shandong Marine Resource and Environment Research Institute, Yantai, China
| | - X D Zheng
- Fisheries College, Ocean University of China, Qingdao, China
| | - L H Ren
- Shandong Marine Resource and Environment Research Institute, Yantai, China
| | - W J Wang
- Shandong Marine Resource and Environment Research Institute, Yantai, China
| | - G R Li
- Shandong Marine Resource and Environment Research Institute, Yantai, China
| | - B C Sun
- Freshwater Fisheries Research Institute of Linyi, Linyi, China
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81
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Lin ZX, Che CT, Lee SS, Chan RCY, Ip PSP, Yang JM. Sophora flavescens (Ku-Shen) as a booster for antiretroviral therapy through cytochrome P450 3A4 inhibition. Hong Kong Med J 2015; 21 Suppl 7:S18-S21. [PMID: 26908268] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023] Open
Affiliation(s)
- Z X Lin
- School of Chinese Medicine, School of Biomedical Science, The Chinese University of Hong Kong
| | - C T Che
- School of Chinese Medicine, School of Biomedical Science, The Chinese University of Hong Kong & Department of Medicinal Chemistry and Pharmacognosy, University of Illinois at Chicago, Chicago, USA
| | - S S Lee
- Department of Microbiology & Stanley Ho Centre for Emerging Infectious Diseases, The Chinese University of Hong Kong
| | - R C Y Chan
- Department of Microbiology, The Chinese University of Hong Kong
| | - P S P Ip
- School of Chinese Medicine, School of Biomedical Science, The Chinese University of Hong Kong
| | - J M Yang
- School of Chinese Medicine, School of Biomedical Science, The Chinese University of Hong Kong
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82
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Lee WH, Yoo JH, Yang JM, Park JK. Effect of the Film-Growth Defects on the Magnetic Microstructure of Epitaxial FePt Thin Film. J Nanosci Nanotechnol 2015; 15:8688-8692. [PMID: 26726576 DOI: 10.1166/jnn.2015.11498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Effect of the columnar grain boundaries on the perpendicular magnetic domain structure of epitaxial L10 FePt (001) thin film has been studied using electron holography. The analysis of stray fields shows that both the continuous and columnar epitaxial films of L10 FePt (001) consist of perpendicular magnetic domain walls. In the columnar epitaxial film, however, the perpendicular domain walls tend to be confined to columnar grain boundaries, because columnar boundaries act as pinning sites for the domain walls. The domain wall pinning by columnar grain boundaries leads to a significant hysteresis effect in the perpendicular magnetization of L10 FePt epitaxial films.
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83
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Hsu KC, Sung TY, Lin CT, Chiu YY, Hsu JTA, Hung HC, Sun CM, Barve I, Chen WL, Huang WC, Huang CT, Chen CH, Yang JM. Anchor-based classification and type-C inhibitors for tyrosine kinases. Sci Rep 2015; 5:10938. [PMID: 26077136 PMCID: PMC4468516 DOI: 10.1038/srep10938] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [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: 01/16/2015] [Accepted: 05/08/2015] [Indexed: 12/13/2022] Open
Abstract
Tyrosine kinases regulate various biological processes and are drug targets for cancers. At present, the design of selective and anti-resistant inhibitors of kinases is an emergent task. Here, we inferred specific site-moiety maps containing two specific anchors to uncover a new binding pocket in the C-terminal hinge region by docking 4,680 kinase inhibitors into 51 protein kinases, and this finding provides an opportunity for the development of kinase inhibitors with high selectivity and anti-drug resistance. We present an anchor-based classification for tyrosine kinases and discover two type-C inhibitors, namely rosmarinic acid (RA) and EGCG, which occupy two and one specific anchors, respectively, by screening 118,759 natural compounds. Our profiling reveals that RA and EGCG selectively inhibit 3% (EGFR and SYK) and 14% of 64 kinases, respectively. According to the guide of our anchor model, we synthesized three RA derivatives with better potency. These type-C inhibitors are able to maintain activities for drug-resistant EGFR and decrease the invasion ability of breast cancer cells. Our results show that the type-C inhibitors occupying a new pocket are promising for cancer treatments due to their kinase selectivity and anti-drug resistance.
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Affiliation(s)
- Kai-Cheng Hsu
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, Taiwan
| | - Tzu-Ying Sung
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, Taiwan
| | - Chih-Ta Lin
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, Taiwan
| | - Yi-Yuan Chiu
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, Taiwan
| | - John T-A Hsu
- 1] Department of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan [2] Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli, Taiwan
| | - Hui-Chen Hung
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli, Taiwan
| | - Chung-Ming Sun
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan
| | - Indrajeet Barve
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan
| | - Wen-Liang Chen
- Department of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan
| | - Wen-Chien Huang
- Department of Thoracic Surgery, Mackay Memorial Hospital, Taipei City, Taiwan
| | - Chin-Ting Huang
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli, Taiwan
| | - Chun-Hwa Chen
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli, Taiwan
| | - Jinn-Moon Yang
- 1] Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, Taiwan [2] Department of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan
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84
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Lee GC, Lin CH, Tao YC, Yang JM, Hsu KC, Huang YJ, Huang SH, Kung PJ, Chen WL, Wang CM, Wu YR, Chen CM, Lin JY, Hsieh-Li HM, Lee-Chen GJ. The potential of lactulose and melibiose, two novel trehalase-indigestible and autophagy-inducing disaccharides, for polyQ-mediated neurodegenerative disease treatment. Neurotoxicology 2015; 48:120-30. [PMID: 25800379 DOI: 10.1016/j.neuro.2015.03.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Revised: 03/07/2015] [Accepted: 03/12/2015] [Indexed: 12/20/2022]
Abstract
The unique property of trehalose encourages its pharmaceutical application in aggregation-mediated neurodegenerative disorders, including Alzheimer's, Parkinson's, and many polyglutamine (polyQ)-mediated diseases. However, trehalose is digested into glucose by trehalase and which reduced its efficacy in the disease target tissues. Therefore, searching trehalase-indigestible analogs of trehalose is a potential strategy to enhance therapeutic effect. In this study, two trehalase-indigestible trehalose analogs, lactulose and melibiose, were selected through compound topology and functional group analyses. Hydrogen-bonding network analyses suggest that the elimination of the hydrogen bond between the linker ether and aspartate 321 (D321) of human trehalase is the key for lactulose and melibiose to avoid the hydrolyzation. Using polyQ-mediated spinocerebellar ataxia type 17 (SCA17) cell and slice cultures, we found the aggregation was significantly prohibited by trehalose, lactulose, and melibiose, which may through up-regulating of autophagy. These findings suggest the therapeutic applications of trehalase-indigestible trehalose analogs in aggregation-associated neurodegenerative diseases.
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Affiliation(s)
- Guan-Chiun Lee
- Department of Life Science, National Taiwan Normal University, Taipei, Taiwan
| | - Chih-Hsin Lin
- Department of Neurology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei, Taiwan
| | - Yu-Chen Tao
- Department of Life Science, National Taiwan Normal University, Taipei, Taiwan
| | - Jinn-Moon Yang
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, Taiwan
| | - Kai-Cheng Hsu
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, Taiwan
| | - Yin-Jung Huang
- Department of Life Science, National Taiwan Normal University, Taipei, Taiwan
| | - Shih-Han Huang
- Department of Life Science, National Taiwan Normal University, Taipei, Taiwan
| | - Pin-Jui Kung
- Department of Life Science, National Taiwan Normal University, Taipei, Taiwan
| | - Wan-Ling Chen
- Department of Neurology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei, Taiwan
| | - Chien-Ming Wang
- Department of Life Science, National Taiwan Normal University, Taipei, Taiwan
| | - Yih-Ru Wu
- Department of Neurology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei, Taiwan
| | - Chiung-Mei Chen
- Department of Neurology, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei, Taiwan
| | - Jung-Yaw Lin
- Department of Life Science, National Taiwan Normal University, Taipei, Taiwan
| | - Hsiu Mei Hsieh-Li
- Department of Life Science, National Taiwan Normal University, Taipei, Taiwan.
| | - Guey-Jen Lee-Chen
- Department of Life Science, National Taiwan Normal University, Taipei, Taiwan.
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85
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Tsai WC, Yang JM, Liu SC, Chu YH, Lai WS, Lin YS, Lee JC. Management of different kinds of head and neck defects with the submental flap for reconstruction. Eur Arch Otorhinolaryngol 2014; 272:3815-9. [PMID: 25542248 DOI: 10.1007/s00405-014-3461-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2014] [Accepted: 12/16/2014] [Indexed: 12/01/2022]
Abstract
Head and neck surgeries often accompany with moderate-sized defects that require time-consuming reconstructions by free flaps. The submental flap is a versatile and time-effective option for reconstruction of orofacial defects providing acceptable cosmetic and functional results without requiring microsurgical techniques. A retrospective case series study of patients who underwent reconstruction with the submental flap between 2009 and 2013 was conducted. There were 36 patients (33 men and 3 women), with a mean age of 56.4 years, enrolled in this study. The primary lesion sites included oral cavity (24 patients), pharynx (8 patients), larynx (2 patients), neck (1 patient) as well as maxillary sinus (1 patient). All flaps were harvested as the myocutaneous flaps. All donor sites were closed primarily without the need of additional surgery. No complete loss of the flap was encountered and two cases developed marginal necrosis of the flap. The submental flap had a reliable pedicle and had minimal donor-site morbidity. It is an excellent flap option for patients with small- to medium-sized defects in head and neck region.
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Affiliation(s)
- Wan-Chun Tsai
- Department of Otolaryngology-Head and Neck Surgery, Tri-Service General Hospital, National Defense Medical Center, 325, Cheng-Kung Road, Sec. 2, Neihu district, Taipei, 114, Taiwan
| | - Jinn-Moon Yang
- Department of Biological Science and Technology, Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, Taiwan
| | - Shao-Cheng Liu
- Department of Otolaryngology-Head and Neck Surgery, Tri-Service General Hospital, National Defense Medical Center, 325, Cheng-Kung Road, Sec. 2, Neihu district, Taipei, 114, Taiwan
| | - Yueng-Hsiang Chu
- Department of Otolaryngology-Head and Neck Surgery, Tri-Service General Hospital, National Defense Medical Center, 325, Cheng-Kung Road, Sec. 2, Neihu district, Taipei, 114, Taiwan
| | - Wen-Sen Lai
- Department of Otolaryngology-Head and Neck Surgery, Tri-Service General Hospital, National Defense Medical Center, 325, Cheng-Kung Road, Sec. 2, Neihu district, Taipei, 114, Taiwan
- Department of Otolaryngology-Head and Neck Surgery, Taichung Armed Forces General Hospital, Taichung, Taiwan
| | - Yaoh-Shiang Lin
- Department of Otolaryngology Head and Neck Surgery, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | - Jih-Chin Lee
- Department of Otolaryngology-Head and Neck Surgery, Tri-Service General Hospital, National Defense Medical Center, 325, Cheng-Kung Road, Sec. 2, Neihu district, Taipei, 114, Taiwan.
- Department of Biological Science and Technology, Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, Taiwan.
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86
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Chiu YY, Tseng JH, Liu KH, Lin CT, Hsu KC, Yang JM. Homopharma: a new concept for exploring the molecular binding mechanisms and drug repurposing. BMC Genomics 2014; 15 Suppl 9:S8. [PMID: 25521038 PMCID: PMC4290623 DOI: 10.1186/1471-2164-15-s9-s8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Background Drugs that simultaneously target multiple proteins often improve efficacy, particularly in the treatment of complex diseases such as cancers and central nervous system disorders. Many approaches have been proposed to identify the potential targets of a drug. Recently, we have introduced Space-Related Pharmamotif (SRPmotif) method to recognize the proteins that share similar binding environments. In addition, compounds with similar topology may bind to similar proteins and have similar protein-compound interactions. However, few studies have focused on exploring the relationships between binding environments and protein-compound interactions, which is important for understanding molecular binding mechanisms and helpful to be used in discovering drug repurposing. Results In this study, we propose a new concept of "Homopharma", combining similar binding environments and protein-compound interaction profiles, to explore the molecular binding mechanisms and drug repurposing. A Homopharma consists of a set of proteins which have the conserved binding environment and a set of compounds that share similar structures and functional groups. These proteins and compounds present conserved interactions and similar physicochemical properties. Therefore, these compounds are often able to inhibit the proteins in a Homopharma. Our experimental results show that the proteins and compounds in a Homopharma often have similar protein-compound interactions, comprising conserved specific residues and functional sites. Based on the Homopharma concept, we selected four flavonoid derivatives and 32 human protein kinases for enzymatic profiling. Among these 128 bioassays, the IC50 of 56 and 25 flavonoid-kinase inhibitions are less than 10 μM and 1 μM, respectively. Furthermore, these experimental results suggest that these flavonoids can be used as anticancer compounds, such as oral and colorectal cancer drugs. Conclusions The experimental results show that the Homopharma is useful for identifying key binding environments of proteins and compounds and discovering new inhibitory effects. We believe that the Homopharma concept can have the potential for understanding molecular binding mechanisms and providing new clues for drug development.
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Ma N, Lai CS, Chung CH, Yang JM, Hsu KC, Chen CY, Chung TS, Li S, Ho CT, Pan MH. 5-Demethyltangeretin is more potent than tangeretin in inhibiting dimethylbenz(a)anthracene (DMBA)/12-O-tetradecanoylphorbol-13-acetate (TPA)-induced skin tumorigenesis. J Funct Foods 2014. [DOI: 10.1016/j.jff.2014.08.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
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88
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Lee CC, Maestre-Reyna M, Hsu KC, Wang HC, Liu CI, Jeng WY, Lin LL, Wood R, Chou CC, Yang JM, Wang AHJ. Crowning proteins: modulating the protein surface properties using crown ethers. Angew Chem Int Ed Engl 2014; 53:13054-8. [PMID: 25287606 PMCID: PMC4288931 DOI: 10.1002/anie.201405664] [Citation(s) in RCA: 44] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Revised: 07/16/2014] [Indexed: 11/18/2022]
Abstract
Crown ethers are small, cyclic polyethers that have found wide-spread use in phase-transfer catalysis and, to a certain degree, in protein chemistry. Crown ethers readily bind metallic and organic cations, including positively charged amino acid side chains. We elucidated the crystal structures of several protein-crown ether co-crystals grown in the presence of 18-crown-6. We then employed biophysical methods and molecular dynamics simulations to compare these complexes with the corresponding apoproteins and with similar complexes with ring-shaped low-molecular-weight polyethylene glycols. Our studies show that crown ethers can modify protein surface behavior dramatically by stabilizing either intra- or intermolecular interactions. Consequently, we propose that crown ethers can be used to modulate a wide variety of protein surface behaviors, such as oligomerization, domain–domain interactions, stabilization in organic solvents, and crystallization.
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Affiliation(s)
- Cheng-Chung Lee
- Institute of Biological Chemistry, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei 11529 (Taiwan); Core Facilities for Protein Structural Analysis, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei 11529 (Taiwan)
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89
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Lee CC, Maestre-Reyna M, Hsu KC, Wang HC, Liu CI, Jeng WY, Lin LL, Wood R, Chou CC, Yang JM, Wang AHJ. Crowning Proteins: Modulating the Protein Surface Properties using Crown Ethers. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201405664] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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90
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Yang JM, Rui BB, Chen C, Chen H, Xu TJ, Xu WP, Wei W. Acetylsalicylic acid enhances the anti-inflammatory effect of fluoxetine through inhibition of NF-κB, p38-MAPK and ERK1/2 activation in lipopolysaccharide-induced BV-2 microglia cells. Neuroscience 2014; 275:296-304. [PMID: 24952332 DOI: 10.1016/j.neuroscience.2014.06.016] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Revised: 06/09/2014] [Accepted: 06/10/2014] [Indexed: 01/08/2023]
Abstract
The latest advancements in neurobiological research provide increasing evidence that inflammatory and neurodegenerative pathways play an important role in depression. According to the cytokine hypothesis, depression could be due to the increased production of pro-inflammatory cytokines by microglia activation. Thus, using the BV-2 microglial cell line, the aim of the present study was to investigate whether fluoxetine (FLX) or acetylsalicylic acid (ASA) could inhibit this microglia activation and could achieve better results in combination. Our results showed that FLX could attenuate lipopolysaccharide (LPS)-induced production of interleukin-1β (IL-1β), the expression of the indoleamine 2,3 dioxygenase (IDO) enzyme and the depletion of 5-HT. Moreover, FLX could inhibit phosphorylation of nuclear factor-κB (NF-κB) and phosphorylation of p38 mitogen-activated protein kinase (MAPK), and the combined use with ASA could enhance these effects. Notably, the adjunctive agent ASA could also inhibit phosphorylation of extracellular-regulated kinase 1/2 (ERK1/2). Taken together, our results suggest that FLX may have some anti-inflammatory effects by modulating microglia activation and that ASA served as an effective adjunctive agent by enhancing these therapeutic effects.
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Affiliation(s)
- J M Yang
- Anhui Provincial Cancer Hospital, Hefei, Anhui Province, China
| | - B B Rui
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine of China Education Ministry, Hefei, Anhui Province, China
| | - C Chen
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei, Anhui Province, China
| | - H Chen
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine of China Education Ministry, Hefei, Anhui Province, China
| | - T J Xu
- Anhui Provincial Hospital, Hefei, Anhui Province, China
| | - W P Xu
- Anhui Provincial Hospital, Hefei, Anhui Province, China.
| | - W Wei
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine of China Education Ministry, Hefei, Anhui Province, China.
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91
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Seo AN, Yang JM, Kim H, Jheon S, Kim K, Lee CT, Jin Y, Yun S, Chung JH, Paik JH. Clinicopathologic and prognostic significance of c-MYC copy number gain in lung adenocarcinomas. Br J Cancer 2014; 110:2688-99. [PMID: 24809777 PMCID: PMC4037828 DOI: 10.1038/bjc.2014.218] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2013] [Revised: 03/26/2014] [Accepted: 04/01/2014] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND c-MYC copy number gain (c-MYC gain) has been associated with aggressive behaviour in several cancers. However, the role of c-MYC gain has not yet been determined in lung adenocarcinomas classified by genetic alterations in epidermal growth factor receptor (EGFR), KRAS, and anaplastic lymphoma kinase (ALK) genes. We investigated the clinicopathologic and prognostic significance of c-MYC gain for disease-free survival (DFS) and overall survival (OS) according to EGFR, KRAS, and ALK gene status and stages in lung adenocarcinomas. METHODS In 255 adenocarcinomas resected in Seoul National University Bundang Hospital from 2003 to 2009, fluorescence in situ hybridisation (FISH) with c-MYC probe and centromeric enumeration probe 8 (CEP8) was analysed using tissue microarray containing single representative core per each case. EGFR (codon 18 to 21) and KRAS (codon 12, 13, and 61) mutations were analysed by polymerase chain reaction and direct sequencing method from formalin-fixed, paraffin-embedded tissue sections. ALK rearrangement was determined by FISH method. c-MYC gain was defined as >2 copies per nucleus, chromosome 8 gain as ⩾3 copies per nucleus, and gain of c-MYC:CEP8 ratio (hereafter, c-MYC amplification) as ⩾2. RESULTS We observed c-MYC gain in 20% (51 out of 255), chromosome 8 gain in 5.5% (14 out of 255), c-MYC amplification in 2.4% (6 out of 255), EGFR mutation in 49.4% (118 out of 239), KRAS mutation in 5.7% (7 out of 123), and ALK rearrangement in 4.9% (10 out of 205) of lung adenocarcinomas. c-MYC gain was observed in 19% (22 out of 118) of patients with lung adenocarcinomas with an EGFR mutation, but not in any patients with a KRAS mutation, or an ALK rearrangement. c-MYC gain (but not chromosome 8 gain or c-MYC amplification) was an independent poor-prognostic factor in the full cohort of lung adenocarcinoma (P=0.022, hazard ratio (HR)=1.71, 95% confidence interval (CI), 1.08-2.69 for DFS; P=0.032, HR=2.04, 95% CI, 1.06-3.91 for OS), as well as in stage I subgroup (P=0.023, HR=4.70, 95% CI, 1.24-17.78 for DFS; P=0.031, HR=4.65, 95% CI, 1.15-18.81 for OS), and in EGFR-mutant subgroup (P=0.022; HR=2.14; 95% CI, 1.11-4.10 for DFS). CONCLUSIONS c-MYC gain (but not chromosome 8 gain or c-MYC amplification) was an independent poor-prognostic factor for DFS and OS in lung adenocarcinomas, both in full cohort and stage I cancer, and possibly for DFS in EGFR-mutant adenocarcinomas. Additional studies are required to determine if patients with lung adenocarcinoma with c-MYC gain are candidates for additional first-line treatment to mitigate their increased risk for disease progression and death.
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Affiliation(s)
- A N Seo
- 1] Department of Pathology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 300 Gumi-dong, Bundang-gu, Seongnam, Gyeonggi 463-707, Korea [2] Department of Pathology, Kyungpook National University College of Medicine, 680 Gukchaebosang-ro, Jung-gu, Daegu 700-842, Korea
| | - J M Yang
- Department of Pathology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 300 Gumi-dong, Bundang-gu, Seongnam, Gyeonggi 463-707, Korea
| | - H Kim
- 1] Department of Pathology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 300 Gumi-dong, Bundang-gu, Seongnam, Gyeonggi 463-707, Korea [2] Department of Pathology, Seoul National University College of Medicine, 28 Yeongon-dong, Jongno-gu, Seoul 110-799, Korea
| | - S Jheon
- 1] Department of Thoracic Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 300 Gumi-dong, Bundang-gu, Seongnam, Gyeonggi 463-707, Korea [2] Department of Thoracic Surgery, Seoul National University College of Medicine, 28 Yeongon-dong, Jongno-gu, Seoul 110-799, Korea
| | - K Kim
- 1] Department of Thoracic Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 300 Gumi-dong, Bundang-gu, Seongnam, Gyeonggi 463-707, Korea [2] Department of Thoracic Surgery, Seoul National University College of Medicine, 28 Yeongon-dong, Jongno-gu, Seoul 110-799, Korea
| | - C T Lee
- 1] Department of Internal medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 300 Gumi-dong, Bundang-gu, Seongnam, Gyeonggi 463-707, Korea [2] Department of Internal medicine, Seoul National University College of Medicine, 28 Yeongon-dong, Jongno-gu, Seoul 110-799, Korea
| | - Y Jin
- 1] Department of Pathology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 300 Gumi-dong, Bundang-gu, Seongnam, Gyeonggi 463-707, Korea [2] Department of Pathology, Seoul National University College of Medicine, 28 Yeongon-dong, Jongno-gu, Seoul 110-799, Korea
| | - S Yun
- 1] Department of Pathology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 300 Gumi-dong, Bundang-gu, Seongnam, Gyeonggi 463-707, Korea [2] Department of Pathology, Seoul National University College of Medicine, 28 Yeongon-dong, Jongno-gu, Seoul 110-799, Korea
| | - J-H Chung
- 1] Department of Pathology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 300 Gumi-dong, Bundang-gu, Seongnam, Gyeonggi 463-707, Korea [2] Department of Pathology, Seoul National University College of Medicine, 28 Yeongon-dong, Jongno-gu, Seoul 110-799, Korea
| | - J H Paik
- 1] Department of Pathology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 300 Gumi-dong, Bundang-gu, Seongnam, Gyeonggi 463-707, Korea [2] Department of Pathology, Seoul National University College of Medicine, 28 Yeongon-dong, Jongno-gu, Seoul 110-799, Korea
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Abstract
DNA mimic proteins have DNA-like negative surface charge distributions, and they function by occupying the DNA binding sites of DNA binding proteins to prevent these sites from being accessed by DNA. DNA mimic proteins control the activities of a variety of DNA binding proteins and are involved in a wide range of cellular mechanisms such as chromatin assembly, DNA repair, transcription regulation, and gene recombination. However, the sequences and structures of DNA mimic proteins are diverse, making them difficult to predict by bioinformatic search. To date, only a few DNA mimic proteins have been reported. These DNA mimics were not found by searching for functional motifs in their sequences but were revealed only by structural analysis of their charge distribution. This review highlights the biological roles and structures of 16 reported DNA mimic proteins. We also discuss approaches that might be used to discover new DNA mimic proteins.
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Affiliation(s)
- Hao-Ching Wang
- Graduate Institute of Translational Medicine, College of Medical Science and Technology, Taipei Medical University , Taipei 110, Taiwan
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93
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Lou GC, Yang JM, Ke JJ, Wu WQ, Zhou B. Acute pancreatitis induced by placement of a duodenal stent. Endoscopy 2014; 45 Suppl 2 UCTN:E256-7. [PMID: 24008453 DOI: 10.1055/s-0033-1344423] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- G C Lou
- Department of Gastroenterology, Zhejiang Provincial People's Hospital, Hangzhou, China
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Lin CH, Chang TC, Das A, Fang MY, Hung HC, Hsu KC, Yang JM, von Itzstein M, Mong KKT, Hsu TA, Lin CC. Synthesis of acylguanidine zanamivir derivatives as neuraminidase inhibitors and the evaluation of their bio-activities. Org Biomol Chem 2014; 11:3943-8. [PMID: 23695381 DOI: 10.1039/c3ob40624e] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of acylguanidine-modified zanamivir analogs were synthesized and their inhibitory activities against the NAs of avian influenza viruses (H1N1 and H3N2) were evaluated. In particular, zanamivir derivative , with a hydrophobic naphthalene substituent, exhibits the best inhibitory activity against group-1 NA with an IC50 of 20 nM.
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Affiliation(s)
- Chien-Hung Lin
- Department of Chemistry, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu 30013, Taiwan
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Kim NY, Kang CI, Hur GH, Yang JM, Shin S. Bacillus anthracis lethal toxin induces cell-type-specific cytotoxicity in human lung cell lines. J Appl Microbiol 2014; 116:1334-43. [PMID: 24471528 DOI: 10.1111/jam.12457] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2013] [Revised: 01/13/2014] [Accepted: 01/23/2014] [Indexed: 12/20/2022]
Abstract
AIMS Inhalational anthrax is caused by the entry of Bacillus anthracis spores into the lung. Inhaled spores are phagocytosed by alveolar macrophages. Bacilli then escape from the macrophage and spread to other cells, initiating a systemic anthrax infection. Based on the pathological studies of primate and human inhalational anthrax cases, it appears that lung tissue injury is a lethal consequence of the disease. Although the cytotoxicity of anthrax lethal toxin to macrophages is well known, it is not clear how anthrax toxin affects the various lung cell types. METHODS AND RESULTS Using model cell lines representing different physiological compartments of the lung, we have investigated the cytotoxic effects of anthrax lethal toxin. The cell response was evaluated through MTT metabolism, neutral red uptake, initiation of apoptosis, and expression and binding activity of anthrax toxin receptors. We found that a human small airway epithelial cell line, HSAEC, was susceptible to anthrax lethal toxin. The other cell lines, A549, MRC-5, H358 and SKLU-1, displayed resistance to anthrax lethal toxin-mediated toxicity, although the expression of anthrax toxin receptors was detected in all the cell lines tested. CONCLUSIONS Our results indicate that cell-type-specific toxicity may be induced by anthrax lethal toxin in human lung tissues and does not correlate with anthrax toxin receptor expression levels. SIGNIFICANCE AND IMPACT OF THE STUDY This work suggests that cell-type-specific cytotoxicity of anthrax toxin in lung cells may cause subsequent lung disease progression. It may explain the initial pathogenic step of inhalational anthrax.
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Affiliation(s)
- N Y Kim
- Department of Life Science, Sogang University, Shinsu-Dong, Mapo, Seoul, Korea
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96
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Liu IH, Lo YS, Yang JM. Template-based scoring functions for visualising biological insights of H-2Kb-peptide-TCR complexes. INT J DATA MIN BIOIN 2014; 8:326-37. [PMID: 24417025 DOI: 10.1504/ijdmb.2013.056079] [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: 11/21/2022]
Abstract
Major Histocompatibility Complex (MHC), peptide and T-Cell Receptor (TCR) play an essential role of adaptive immune responses. Many prediction servers are available for identification of peptides that bind to MHC class I molecules but often lack detailed interacting residues for analysing MHC-peptide-TCR interaction mechanisms. This study considers both the interface similarity and the interacting force for identifying binding models. Our model, considering both the MHC-peptide and the peptide-TCR interfaces, is able to provide visualisation and the biological insights of binding models. We believe that our model is useful for the development of peptide-based vaccines.
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Affiliation(s)
- I-Hsin Liu
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu 30050, Taiwan.
| | - Yu-Shu Lo
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu 30050, Taiwan
| | - Jinn-Moon Yang
- Core Facility for Structural Bioinformatics, Institute of Bioinformatics and Systems Biology, Department of Biological Science and Technology, National Chiao Tung University, Hsinchu 30050, Taiwan
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97
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Zhang Y, Yang WQ, Zhu H, Qian YY, Zhou L, Ren YJ, Ren XC, Zhang L, Liu XP, Liu CG, Ming ZJ, Li B, Chen B, Wang JR, Liu YB, Yang JM. Regulation of autophagy by miR-30d impacts sensitivity of anaplastic thyroid carcinoma to cisplatin. Biochem Pharmacol 2013; 87:562-70. [PMID: 24345332 DOI: 10.1016/j.bcp.2013.12.004] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Revised: 11/29/2013] [Accepted: 12/02/2013] [Indexed: 12/11/2022]
Abstract
miR-30d has been observed to be significantly down-regulated in human anaplastic thyroid carcinoma (ATC), and is believed to be an important event in thyroid cell transformation. In this study, we found that miR-30d has a critical role in modulating sensitivity of ATC cells to cisplatin, a commonly used chemotherapeutic drug for treatment of this neoplasm. Using a mimic of miR-30d, we demonstrated that miR-30d could negatively regulate the expression of beclin 1, a key autophagy gene, leading to suppression of the cisplatin-activated autophagic response that protects ATC cells from apoptosis. A reporter gene assay demonstrated that the binding sequences of miR-30d in the beclin 1-3' UTR was the region required for the inhibition of beclin 1 expression by this miRNA. We further showed that inhibition of the beclin 1-mediated autophagy by the miR-30d mimic sensitized ATC cells to cisplatin both in vitro (cell culture) and in vivo (animal xenograft model). These results suggest that dysregulation of miR-30d in ATC cells is responsible for the insensitivity to cisplatin by promoting autophagic survival. Thus, miR-30d may be exploited as a potential target for therapeutic intervention in the treatment of ATC.
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Affiliation(s)
- Y Zhang
- Department of Pharmacology, College of Pharmaceutical Sciences, Hematology Center of Cyrus Tang Medical Institute, Affiliated Changshu Hospital, Soochow University, Suzhou, Jiangsu Province, China.
| | - W Q Yang
- Department of Pharmacology, College of Pharmaceutical Sciences, Hematology Center of Cyrus Tang Medical Institute, Affiliated Changshu Hospital, Soochow University, Suzhou, Jiangsu Province, China
| | - H Zhu
- Department of Surgery, School of Medicine, Ohio State University, USA
| | - Y Y Qian
- Department of Pharmacology, College of Pharmaceutical Sciences, Hematology Center of Cyrus Tang Medical Institute, Affiliated Changshu Hospital, Soochow University, Suzhou, Jiangsu Province, China
| | - L Zhou
- Department of Pharmacology, College of Pharmaceutical Sciences, Hematology Center of Cyrus Tang Medical Institute, Affiliated Changshu Hospital, Soochow University, Suzhou, Jiangsu Province, China
| | - Y J Ren
- Department of Pharmacology, College of Pharmaceutical Sciences, Hematology Center of Cyrus Tang Medical Institute, Affiliated Changshu Hospital, Soochow University, Suzhou, Jiangsu Province, China
| | - X C Ren
- Pharmacology and The Penn State Hershey Cancer Institute, The Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - L Zhang
- Department of Pharmacology, College of Pharmaceutical Sciences, Hematology Center of Cyrus Tang Medical Institute, Affiliated Changshu Hospital, Soochow University, Suzhou, Jiangsu Province, China
| | - X P Liu
- Department of Experimental Therapeutics, MD Anderson Cancer Center, Houston, TX, USA
| | - C G Liu
- Department of Experimental Therapeutics, MD Anderson Cancer Center, Houston, TX, USA
| | - Z J Ming
- Department of Pharmacology, College of Pharmaceutical Sciences, Hematology Center of Cyrus Tang Medical Institute, Affiliated Changshu Hospital, Soochow University, Suzhou, Jiangsu Province, China
| | - B Li
- Department of Surgery, School of Medicine, Ohio State University, USA
| | - B Chen
- Department of Pharmacology, College of Pharmaceutical Sciences, Hematology Center of Cyrus Tang Medical Institute, Affiliated Changshu Hospital, Soochow University, Suzhou, Jiangsu Province, China
| | - J R Wang
- Department of Pharmacology, College of Pharmaceutical Sciences, Hematology Center of Cyrus Tang Medical Institute, Affiliated Changshu Hospital, Soochow University, Suzhou, Jiangsu Province, China
| | - Y B Liu
- Department of General Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - J M Yang
- Department of Pharmacology, College of Pharmaceutical Sciences, Hematology Center of Cyrus Tang Medical Institute, Affiliated Changshu Hospital, Soochow University, Suzhou, Jiangsu Province, China; Pharmacology and The Penn State Hershey Cancer Institute, The Pennsylvania State University College of Medicine, Hershey, PA, USA.
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98
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Wang HC, Hsu KC, Yang JM, Wu ML, Ko TP, Lin SR, Wang AHJ. Staphylococcus aureus protein SAUGI acts as a uracil-DNA glycosylase inhibitor. Nucleic Acids Res 2013; 42:1354-64. [PMID: 24150946 PMCID: PMC3902945 DOI: 10.1093/nar/gkt964] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
DNA mimic proteins are unique factors that control the DNA binding activity of target proteins by directly occupying their DNA binding sites. The extremely divergent amino acid sequences of the DNA mimics make these proteins hard to predict, and although they are likely to be ubiquitous, to date, only a few have been reported and functionally analyzed. Here we used a bioinformatic approach to look for potential DNA mimic proteins among previously reported protein structures. From ∼14 candidates, we selected the Staphylococcus conserved hypothetical protein SSP0047, and used proteomic and structural approaches to show that it is a novel DNA mimic protein. In Staphylococcus aureus, we found that this protein acts as a uracil-DNA glycosylase inhibitor, and therefore named it S. aureus uracil-DNA glycosylase inhibitor (SAUGI). We also determined and analyzed the complex structure of SAUGI and S. aureus uracil-DNA glycosylase (SAUDG). Subsequent BIAcore studies further showed that SAUGI has a high binding affinity to both S. aureus and human UDG. The two uracil-DNA glycosylase inhibitors (UGI and p56) previously known to science were both found in Bacillus phages, and this is the first report of a bacterial DNA mimic that may regulate SAUDG’s functional roles in DNA repair and host defense.
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Affiliation(s)
- Hao-Ching Wang
- Institute of Biological Chemistry, Academia Sinica, Taipei 115, Taiwan, Graduate Institute of Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei 110, Taiwan, Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, 30050, Taiwan, Department of Biological Science and Technology, National Chiao Tung University, Hsinchu, 30050, Taiwan, Center for Bioinformatics Research, National Chiao Tung University, Hsinchu, 30050, Taiwan and Core Facilities for Protein Structural Analysis, Academia Sinica, Taipei 115, Taiwan
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99
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Abstract
Background The adaptive immune response is antigen-specific and triggered by pathogen recognition through T cells. Although the interactions and mechanisms of TCR-peptide-MHC (TCR-pMHC) have been studied over three decades, the biological basis for these processes remains controversial. As an increasing number of high-throughput binding epitopes and available TCR-pMHC complex structures, a fast genome-wide structural modelling of TCR-pMHC interactions is an emergent task for understanding immune interactions and developing peptide vaccines. Results We first constructed the PPI matrices and iMatrix, using 621 non-redundant PPI interfaces and 398 non-redundant antigen-antibody interfaces, respectively, for modelling the MHC-peptide and TCR-peptide interfaces, respectively. The iMatrix consists of four knowledge-based scoring matrices to evaluate the hydrogen bonds and van der Waals forces between sidechains or backbones, respectively. The predicted energies of iMatrix are high correlated (Pearson's correlation coefficient is 0.6) to 70 experimental free energies on antigen-antibody interfaces. To further investigate iMatrix and PPI matrices, we inferred the 701,897 potential peptide antigens with significant statistic from 389 pathogen genomes and modelled the TCR-pMHC interactions using available TCR-pMHC complex structures. These identified peptide antigens keep hydrogen-bond energies and consensus interactions and our TCR-pMHC models can provide detailed interacting models and crucial binding regions. Conclusions Experimental results demonstrate that our method can achieve high precision for predicting binding affinity and potential peptide antigens. We believe that iMatrix and our template-based method can be useful for the binding mechanisms of TCR-pMHC complexes and peptide vaccine designs.
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100
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Chen SH, Lin SW, Lin SR, Liang PH, Yang JM. Moiety-linkage map reveals selective nonbisphosphonate inhibitors of human geranylgeranyl diphosphate synthase. J Chem Inf Model 2013; 53:2299-311. [PMID: 23919676 DOI: 10.1021/ci400227r] [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] [Indexed: 12/26/2022]
Abstract
Bisphosphonates are potent inhibitors of farnesyl pyrophosphate synthase (FPPS) and geranylgeranyl diphosphate synthase (GGPPS). Current bisphosphonate drugs (e.g., Fosamax and Zometa) are highly efficacious in the treatment of bone diseases such as osteoporosis, Paget's disease, and tumor-induced osteolysis, but they are often less potent in blood and soft-tissue due to their phosphate moieties. The discovery of nonbisphosphonate inhibitors of FPPS and/or GGPPS for the treatment of bone diseases and cancers is, therefore, a current goal. Here, we propose a moiety-linkage-based method, combining a site-moiety map with chemical structure rules (CSRs), to discover nonbisphosphonate inhibitors from thousands of commercially available compounds and known crystal structures. Our moiety-linkage map reveals the binding mechanisms and inhibitory efficacies of 51 human GGPPS (hGGPPS) inhibitors. To the best of our knowledge, we are the first team to discover two novel selective nonbisphosphonate inhibitors, which bind to the inhibitory site of hGGPPS, using CSRs and site-moiety maps. These two compounds can be considered as a novel lead for the potent inhibitors of hGGPPS for the treatment of cancers and mevalonate-pathway diseases. Moreover, based on our moiety-linkage map, we identified two key residues of hGGPPS, K202, and K212, which play an important role for the inhibitory effect of zoledronate (IC50 = 3.4 μM and 2.4 μM, respectively). This result suggests that our method can discover specific hGGPPS inhibitors across multiple prenyltransferases. These results show that the compounds that highly fit our moiety-linkage map often inhibit hGGPPS activity and induce tumor cell apoptosis. We believe that our method is useful for discovering potential inhibitors and binding mechanisms for pharmaceutical targets.
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Affiliation(s)
- Shih-Hsun Chen
- Department of Biological Science and Technology, National Chiao Tung University , Hsinchu 30050, Taiwan
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