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台灣鳥類誌 讀者回饋

學術演講

2017-03-28
3/28 15:30 Dr. Shin-Yi Lin 演講_ Genetic Dissection of TRA-1 Function and Regulation in the Sex Determination Pathways of Caenorhabditis Nematodes

中心消息

徵人

2017-03-31
李文雄院士-新世代高速定序中心誠徵資訊研究助理1名

2017-03-31
李文雄院士中研院新世代基因體定序核心實驗室誠徵實驗助理1名Positions Open in High Throughput Genomics Core Facility

2017-03-31
端木茂甯助研究員研究室誠徵專任研究助理1名

2017-03-31
野澤洋耕副研究員研究室誠徵研究助理1名

2017-04-07
綠島海洋研究站誠徵研究助理1名

2017-04-30
王忠信助研究員研究室誠徵約聘研究助理1名(進行Bioinformatics相關實驗)

2017-04-30
王忠信助研究員研究室誠徵約聘研究助理1名(操作基礎分生及genomics相關實驗)

2017-05-31
趙淑妙特聘研究員研究室誠徵研究助理1名

2017-05-31
陳國勤研究員研究室(潮間帶生態研究室)誠徵約聘助理1名

2017-05-31
台灣生物多樣性資訊機構(TaiBIF)誠徵生物多樣性資訊技術員 (研發替代役可) 1名

活動公告

2017-03-28
3/28 3月份「知識饗宴」- 臺灣史研究所謝國興研究員兼所長主講「後殖民?臺灣民間信仰中的日本記憶」

2017-03-31
「第六屆中央研究院人文及社會科學學術性專書獎」自本(106)年3月1日起至3月31日止受理申請

2017-03-31
3/31 3月份藝文活動「不可能的相聲」

2017-07-14
第24屆東元獎即日起至7月14日止受理申請

王達益 副主任/
副研究員

回研究人員

Dr. Daryi Wang

[ email ]

tel: +886-2-2787-2271

Deputy Director/ Associate Research Fellow
Ph.D.-National Taiwan Ocean University, 1999
Research Fields
Gut microbiota, Microbial interaction, Analyzing tools for metagenome,
Major Research Achievements (2013-2017)
  • MetaMIS: a metagenomic microbial interaction simulator based on a microbial community profiles
  • The complex and dynamics of microbial community are major factors in ecology system. With NGS technique, metagenomics data provides a new source to explore microbial interactions. Lotka-Volterra models have been widely used to infer animal interaction of dynamic systems and recently been applied to analyze metagenomic data. In this paper, we presented the first Lotka-Volterra model based tool, Metagenomic Microbial Interaction Simulator (MetaMIS), to analyze time series data of microbial community profiles. MetaMIS firstly infers the underlying microbial interactions from operational taxonomic units (OTU) abundance tables and interprets interaction models by the use of Lotka-Volterra model. We also embedded Bray-Curtis dissimilarity method in MetaMIS to evaluate the resemblance of biological reality. MetaMIS was designed to tolerate a high level of missing data, it can estimate the interaction information without the influence from rare microbes. For each interaction model, MetaMIS systematically examines interaction patterns (such as mutualism (+/+), competition (-/-), parasitism or predation (+/-), commensalism (+/0), amensalism (-/0), and no effect (0/0)) and refines the biotic role inside microbes. The output of MetaMIS can be exported as Gephi or Cytoscape format for advanced analysis. In a test case, we collected the human female gut microbiota which contained 124 time points of 88 OTUs at the family level. Through the test, MetaMIS generated 55 interactions in around 5 minutes on a standard desktop computer, the results also revealed that rare species may play important roles in the microbial dynamic system. MetaMIS provides an efficiency and user-friendly platform and may reveal new insights from metagenomics data.
  • Construction of microbial interaction network using rule-based approach
  • Microbial interactions are ubiquitous in nature. Recently, many similarity-based approaches have been developed to study the interaction in microbial ecosystems. These approaches can only explain the non-directional interactions yet a more complete view on how microbes regulate each other remains elusive. In addition, the strength of microbial interactions is difficult to be quantified by only using correlation analysis. In this study, a rule-based microbial network (RMN) algorithm, which integrates regulatory OTU-triplet model with parametric weighting function, is being developed to construct microbial regulatory networks. The RMN algorithm not only can extrapolate the cooperative and competitive relationships between microbes, but also can infer the direction of such interactions. In addition, RMN algorithm can characterize the regulatory relationship composed of microbial pairs with low correlation coefficient in microbial networks. Finally, our results show that Bifidobacterium, Streptococcus, Clostridium XI, and Bacteroides are essential for causing abundance changes of Veillonella in gut microbiome. Furthermore, we found new possible microbial interactions, including the competitive relationship between Veillonella and Bacteroides, and the cooperative relationship between Veillonella and Clostridium XI. In conclusion, the RMN algorithm provides the reconstruction of gut microbe networks, and can shed light on the dynamical interactions of microbes in the infant intestinal tract.
  • Effects of host phylogeny and habitats on gut microbiomes of freshwater shrimp
  • The gut microbial community is one of the richest and most complex ecosystems on earth, and the intestinal microbes play an important role in host development and health. Next generation sequencing approaches, which rapidly produce millions of short reads that enable the investigation on a culture independent basis, are now popular for exploring microbial community. Currently, the gut microbiome in fresh water shrimp is unexplored. To explore gut microbiomes of the oriental river prawn (Macrobrachium nipponense) and investigate the effects of host genetics and habitats on the microbial composition, 454 pyrosequencing based on the 16S rRNA gene were performed. We collected six groups of samples, including M. nipponense shrimp from two populations, rivers and lakes, and one sister species (M. asperulum) as an out group. We found that Proteobacteria is the major phylum in oriental river prawn, followed by Firmicutes and Actinobacteria. Compositional analysis showed microbial divergence between the two shrimp species is higher than that between the two populations of one shrimp species collected from river and lake. Hierarchical clustering also showed that host genetics had a greater impact on the divergence of gut microbiome than host habitats. This finding was also congruent with the functional prediction from the metagenomic data implying that the two shrimp species still shared the same type of biological functions, reflecting a similar metabolic profile in their gut environments. In conclusion, this study provides the first investigation of the gut microbiome of fresh water shrimp, and supports the hypothesis of host species-specific signatures of bacterial community composition.
Research Interests
  • Intestinal microbiome. Tools for metagenomic analysis.
    Ongoing projects
    • Exploring the microbial interaction network in the tree frog intestinal tract
    • There has been a long interaction history between gut microbes and their hosts. Indeed, the microbes contribute important functions to their hosts such as fermenting unused energy substrates, training the immune system, preventing growth of pathogenic bacteria, regulating the development of the gut, producing vitamins for the host. Note that the number of microbes living in the hosts largely exceeds total number of host cell, and the number of genes the microbes encode largely exceeds that of host genes. One of the most concerned topics is the association between the gut microbes and the host diseases. A few lines of evidence have shown that microorganisms contribute to human diseases, such as obesity, vaginosis, and inflammatory bowel disease. Moreover, recent studies showed that a certain types of cancer and coronary heart disease are also associated with gut microbes. For clarifying the association of disease and the microbes, international projects, such as HMP (human metagenome project) supported by NIH, MetaHit (human intestinal tract) project supported by the European Commission, have been generating related big data, and promote a series of downstream bioiformatic studies.
    • One of the major challenge in studying microbe-host interaction is monitoring the microbial dynamic change. As most studies only investigated the microbiomes between health individuals and patients, it is difficult to record the realtime change of microbial community. We proposed to make the use of frog hibernation when the microbes are in low activity and low nutrient supply, from which we may have the chance to detect the initiation of microbial interaction. The second challenge in this project is inferring the microbial interaction network from metagenomic data, which was notoriously biased. We proposed to utilize generalized Lotka–Volterra equations to simulate metagenome time series data which may improve the prediction of microbial interaction. Then, we will test the data on Bayesian network inference algorithms and predict its temporal dynamics.
      Publications (2013-2017)
      1. Weng, F.C.H., Shaw, G.T.W., Weng, C.Y., Yang, Y.J., Wang, D.*, to appear, “Inferring Microbial Interactions in the Gut of the Hong Kong Whipping Frog (Polypedates megacephalus) and a Validation Using Probiotics”, FRONTIERS IN MICROBIOLOGY, ,. (SCI) (IF: 4.165; SCI ranking: 18.7%)
      2. Weng Francis Cheng-Hsuan, Yang Yi-Ju, Wang Daryi*, 2016, “Functional analysis for gut microbes of the brown tree frog (Polypedates megacephalus) in artificial hibernation”, BMC Genomics, 17(S13), 31-42. (SCI) (IF: 3.867; SCI ranking: 25.9%,19.9%)
      3. Shaw Grace Tzun-Wen, Pao Yueh-Yang, Wang Daryi*, 2016, “MetaMIS: a metagenomic microbial interaction simulator based on microbial community profiles”, BMC Bioinformatics, 17(1), 2-6. (SCI) (IF: 2.435; SCI ranking: 39.8%,50.6%,17.9%)
      4. Tzeng, T.D., Pao, Y.Y., Chen, P.C., Weng, F.C.H., Jean, W.D., Wang, D.*, 2015, “Effects of host phylogeny and habitats on gut microbiomes of oriental river prawn (Macrobrachium nipponense).”, PLoS One, 10(7), e0132860. (SCI) (IF: 3.057; SCI ranking: 17.5%)
      5. Tsai, K.N., Lin, S.H., Liu, W.C., Wang, D.*, 2015, “Inferring microbial interaction network from microbiomic data using RMN algorithm”, BMC System biology, 9, 54. (SCI) (IF: 2.208; SCI ranking: 19.6%)
      6. Chen PC, Shih CH, Chu TJ, Wang D, Lee YC, Tzeng TD, 2015, “Population Structure and Historical Demography of the Oriental River Prawn (Macrobrachium nipponense) in Taiwan.”, PloS one, 10(12), e0145927. (SCI) (IF: 3.057; SCI ranking: 17.5%)
      7. Swamy, K.B.S., Lin, C.H., Yen, M.R., Wang, C.Y., Wang, D.*, 2014, “Examining the condition-specific antisense transcription in S. cerevisiae and S. paradoxus”, BMC GENOMICS, 15, 521. (SCI) (IF: 3.867; SCI ranking: 25.9%,19.9%)
      8. Lin, CH., Tsai, ZT., Wang D.*, 2013, “Role of antisense RNAs in evolution of yeast regulatory complexity”, Genomics, 102(5-6), 484-490. (SCI) (IF: 2.386; SCI ranking: 41.6%,53.6%)