Abstract:
:Understanding the functioning of biological systems depends on tackling complexity spanning spatial scales from genome to organ to whole organism. The basic unit of life, the cell, acts to co-ordinate information received across these scales and processes the myriad of signals to produce an integrated cellular response. Cells interact with and respond to other cells through direct or indirect contact, resulting in emergent structure and function of tissues and organs. Systems biology has traditionally used either a 'top-down' or 'bottom-up' approach. However, neither approach takes account of heterogeneity or 'noise', which is an inherent feature of cellular behaviour and may have significant impact on system level behaviour. We review existing approaches to modelling that use cellular automata or agent-based methodologies, where individual cells are represented as equivalent virtual entities governed by simple rules. These paradigms allow a direct one-to-one mapping between real and virtual cells that can be exploited in terms of acquiring parameters from experimental systems, or for model validation. Such models are inherently extensible and can be integrated with other modelling modalities (e.g. partial or ordinary differential equations) to model multi-scale phenomena. Alternatively, hierarchical agent models may be used to explore the functions of biological systems across temporal and spatial scales. This review examines individual-based models and the application of the paradigm to explore multi-scale phenomena in biology. In so doing, it demonstrates how cellular-based models have begun to play an important role in the development of 'middle-out' models, but with considerable potential for future development.
journal_name
Brief Bioinformjournal_title
Briefings in bioinformaticsauthors
Walker DC,Southgate Jdoi
10.1093/bib/bbp010subject
Has Abstractpub_date
2009-07-01 00:00:00pages
450-61issue
4eissn
1467-5463issn
1477-4054pii
bbp010journal_volume
10pub_type
杂志文章,评审abstract::RNA-sequencing (RNA-seq) has rapidly become a popular tool to characterize transcriptomes. A fundamental research problem in many RNA-seq studies is the identification of reliable molecular markers that show differential expression between distinct sample groups. Together with the growing popularity of RNA-seq, a numb...
journal_title:Briefings in bioinformatics
pub_type: 杂志文章
doi:10.1093/bib/bbt086
更新日期:2015-01-01 00:00:00
abstract::The iteratively reweighted least square (IRLS) method is mostly identical to maximum likelihood (ML) method in terms of parameter estimation and power of quantitative trait locus (QTL) detection. But the IRLS is greatly superior to ML in terms of computing speed and the robustness of parameter estimation. In conjuncti...
journal_title:Briefings in bioinformatics
pub_type: 杂志文章
doi:10.1093/bib/bbs062
更新日期:2014-01-01 00:00:00
abstract::While elementary flux mode (EFM) analysis is now recognized as a cornerstone computational technique for cellular pathway analysis and engineering, EFM application to genome-scale models remains computationally prohibitive. This article provides a review of aspects of EFM computation that elucidates bottlenecks in sca...
journal_title:Briefings in bioinformatics
pub_type: 杂志文章
doi:10.1093/bib/bbz094
更新日期:2020-12-01 00:00:00
abstract::Verification in phylogenetics represents an extremely difficult subject. Phylogenetic analysis deals with the reconstruction of evolutionary histories of species, and as long as mankind is not able to travel in time, it will not be possible to verify deep evolutionary histories reconstructed with modern computational ...
journal_title:Briefings in bioinformatics
pub_type: 杂志文章
doi:10.1093/bib/bbq079
更新日期:2011-05-01 00:00:00
abstract::In recent years, high-throughput genomic technologies like chromatin immunoprecipitation sequencing (ChIp-seq) and transcriptome sequencing (RNA-seq) have been becoming both more refined and less expensive, making them more accessible. Many circular RNAs (circRNAs) that originate from back-spliced exons have been iden...
journal_title:Briefings in bioinformatics
pub_type: 杂志文章
doi:10.1093/bib/bby083
更新日期:2019-11-27 00:00:00
abstract::As the number of completely sequenced genomes rapidly increases, including now the complete Human Genome sequence, the post-genomic problems of genome-scale protein structure determination and the issue of gene function identification become ever more pressing. In fact, these problems can be seen as interrelated in th...
journal_title:Briefings in bioinformatics
pub_type: 杂志文章,评审
doi:10.1093/bib/2.2.111
更新日期:2001-05-01 00:00:00
abstract::In drug development, preclinical safety and pharmacokinetics assessments of candidate drugs to ensure the safety profile are a must. While in vivo and in vitro tests are traditionally used, experimental determinations have disadvantages, as they are usually time-consuming and costly. In silico predictions of these pre...
journal_title:Briefings in bioinformatics
pub_type: 杂志文章
doi:10.1093/bib/bbaa160
更新日期:2020-08-07 00:00:00
abstract::Cooperative regulation among multiple microRNAs (miRNAs) is a complex type of posttranscriptional regulation in human; however, the global view of the system-level regulatory principles across cancers is still unclear. Here, we investigated miRNA-miRNA cooperative regulatory landscape across 18 cancer types and summar...
journal_title:Briefings in bioinformatics
pub_type: 杂志文章,评审
doi:10.1093/bib/bby038
更新日期:2019-09-27 00:00:00
abstract:UNLABELLED:So-called next-generation sequencing (NGS) has provided the ability to sequence on a massive scale at low cost, enabling biologists to perform powerful experiments and gain insight into biological processes. BamView has been developed to visualize and analyse sequence reads from NGS platforms, which have bee...
journal_title:Briefings in bioinformatics
pub_type: 杂志文章
doi:10.1093/bib/bbr073
更新日期:2013-03-01 00:00:00
abstract::P53 is the 'guardian of the genome' and is responsible for regulating cell cycle and apoptosis. The genomic p53 binding regions, where activating transcriptional factors and cofactors like p300 simultaneously bind, are called 'p53-dependent enhancers', which play an important role in tumorigenesis. Current experimenta...
journal_title:Briefings in bioinformatics
pub_type: 杂志文章
doi:10.1093/bib/bbaa053
更新日期:2020-05-11 00:00:00
abstract::The increasing ease with which massive genetic information can be obtained from patients or healthy individuals has stimulated the development of interpretive bioinformatics tools as aids in clinical practice. Most such tools analyze evolutionary information and simple physical-chemical properties to predict whether r...
journal_title:Briefings in bioinformatics
pub_type: 杂志文章
doi:10.1093/bib/bbz146
更新日期:2021-01-18 00:00:00
abstract::Biological knowledge can be inferred from three major levels of information: molecules, organisms and ecologies. Bioinformatics is an established field that has made significant advances in the development of systems and techniques to organize contemporary molecular data; biodiversity informatics is an emerging discip...
journal_title:Briefings in bioinformatics
pub_type: 杂志文章,评审
doi:10.1093/bib/bbm037
更新日期:2007-09-01 00:00:00
abstract::Integrated modelling of biological systems is challenged by composing components with sufficient kinetic data and components with insufficient kinetic data or components built only using experts' experience and knowledge. Fuzzy continuous Petri nets (FCPNs) combine continuous Petri nets with fuzzy inference systems, a...
journal_title:Briefings in bioinformatics
pub_type: 杂志文章
doi:10.1093/bib/bbz114
更新日期:2021-01-18 00:00:00
abstract::Phase separation is an important mechanism that mediates the spatial distribution of proteins in different cellular compartments. While phase-separated proteins share certain sequence characteristics, including intrinsically disordered regions (IDRs) and prion-like domains, such characteristics are insufficient for ma...
journal_title:Briefings in bioinformatics
pub_type: 杂志文章
doi:10.1093/bib/bbaa187
更新日期:2020-09-02 00:00:00
abstract::The understanding of complex biological networks often relies on both a dedicated layout and a topology. Currently, there are three major competing layout-aware systems biology formats, but there are no software tools or software libraries supporting all of them. This complicates the management of molecular network la...
journal_title:Briefings in bioinformatics
pub_type: 杂志文章
doi:10.1093/bib/bbz067
更新日期:2020-07-15 00:00:00
abstract::Correlated reaction sets (Co-Sets) are mathematically defined modules in biochemical reaction networks which facilitate the study of biological processes by decomposing complex reaction networks into conceptually simple units. According to the degree of association, Co-Sets can be classified into three types: perfect,...
journal_title:Briefings in bioinformatics
pub_type: 杂志文章
doi:10.1093/bib/bbp068
更新日期:2011-03-01 00:00:00
abstract::Computational biology is essential in the process of translating biological knowledge into clinical practice, as well as in the understanding of biological phenomena based on the resources and technologies originating from the clinical environment. One such key contribution of computational biology is the discovery of...
journal_title:Briefings in bioinformatics
pub_type: 杂志文章
doi:10.1093/bib/bbp008
更新日期:2009-07-01 00:00:00
abstract::Drug-drug interactions (DDIs) constitute an important concern in drug development and postmarketing pharmacovigilance. They are considered the cause of many adverse drug effects exposing patients to higher risks and increasing public health system costs. Methods to follow-up and discover possible DDIs causing harm to ...
journal_title:Briefings in bioinformatics
pub_type: 杂志文章,评审
doi:10.1093/bib/bbx010
更新日期:2018-09-28 00:00:00
abstract::The contribution of transposable elements (TEs) to genome structure and evolution as well as their impact on genome sequencing, assembly, annotation and alignment has generated increasing interest in developing new methods for their computational analysis. Here we review the diversity of innovative approaches to ident...
journal_title:Briefings in bioinformatics
pub_type: 杂志文章,评审
doi:10.1093/bib/bbm048
更新日期:2007-11-01 00:00:00
abstract::Mass spectrometry (MS)-based proteomics has undergone rapid advancements in recent years, creating challenging problems for bioinformatics. We focus on four aspects where bioinformatics plays a crucial role (and proteomics is needed for clinical application): peptide-spectra matching (PSM) based on the new data-indepe...
journal_title:Briefings in bioinformatics
pub_type: 杂志文章
doi:10.1093/bib/bbx128
更新日期:2019-01-18 00:00:00
abstract::The Gulbenkian Training Programme in Bioinformatics has been offering hands-on training courses in Oeiras, PT for more than a decade. This article is a review of its functional organization and evolution. We aim to share our experience with people considering setting-up similar training facilities elsewhere. More than...
journal_title:Briefings in bioinformatics
pub_type: 杂志文章
doi:10.1093/bib/bbq063
更新日期:2010-11-01 00:00:00
abstract:OBJECTIVE:Development of novel informatics methods focused on improving pregnancy outcomes remains an active area of research. The purpose of this study is to systematically review the ways that artificial intelligence (AI) and machine learning (ML), including deep learning (DL), methodologies can inform patient care d...
journal_title:Briefings in bioinformatics
pub_type: 杂志文章
doi:10.1093/bib/bbaa369
更新日期:2021-01-06 00:00:00
abstract::Access to gene expression data has become increasingly common in recent years; however, analysis has become more difficult as it is often desirable to integrate data from different platforms. Probe mapping across microarray platforms is the first and most crucial step for data integration. In this article, we systemat...
journal_title:Briefings in bioinformatics
pub_type: 杂志文章
doi:10.1093/bib/bbr076
更新日期:2012-09-01 00:00:00
abstract::Transposable elements (TEs) are an important source of human genetic variation with demonstrable effects on phenotype. Recently, a number of computational methods for the detection of polymorphic TE (polyTE) insertion sites from next-generation sequence data have been developed. The use of such tools will become incre...
journal_title:Briefings in bioinformatics
pub_type: 杂志文章
doi:10.1093/bib/bbw072
更新日期:2017-11-01 00:00:00
abstract::We discuss and review different ways to map cellular components and their temporal interaction with other such components to different non-spatially explicit mathematical models. The essential choices made in the literature are between discrete and continuous state spaces, between rule and event-based state updates an...
journal_title:Briefings in bioinformatics
pub_type: 杂志文章,评审
doi:10.1093/bib/bbp062
更新日期:2010-01-01 00:00:00
abstract::It is easy for today's students and researchers to believe that modern bioinformatics emerged recently to assist next-generation sequencing data analysis. However, the very beginnings of bioinformatics occurred more than 50 years ago, when desktop computers were still a hypothesis and DNA could not yet be sequenced. T...
journal_title:Briefings in bioinformatics
pub_type: 历史文章,杂志文章,评审
doi:10.1093/bib/bby063
更新日期:2019-11-27 00:00:00
abstract::Researchers have long been presented with the challenge imposed by the role of genetic heterogeneity in drug response. For many years, Pharmacogenomics and pharmacomicrobiomics has been investigating the influence of an individual's genetic background to drug response and disposition. More recently, the human gut micr...
journal_title:Briefings in bioinformatics
pub_type: 杂志文章
doi:10.1093/bib/bbaa292
更新日期:2020-12-01 00:00:00
abstract::Protein dynamics is central to all biological processes, including signal transduction, cellular regulation and biological catalysis. Among them, in-depth exploration of ligand-driven protein dynamics contributes to an optimal understanding of protein function, which is particularly relevant to drug discovery. Hence, ...
journal_title:Briefings in bioinformatics
pub_type: 杂志文章
doi:10.1093/bib/bbz141
更新日期:2020-12-01 00:00:00
abstract::Most of the microRNAs (miRNAs) play their regulatory roles through posttranscriptional target decay or translational inhibition. For both plants and animals, these regulatory events were previously considered to take place in cytoplasm, as mature miRNAs were observed to be exported to the cytoplasm for Argonaute (AGO)...
journal_title:Briefings in bioinformatics
pub_type: 杂志文章
doi:10.1093/bib/bbx069
更新日期:2018-11-27 00:00:00
abstract::In clinical cancer treatment, genomic alterations would often affect the response of patients to anticancer drugs. Studies have shown that molecular features of tumors could be biomarkers predictive of sensitivity or resistance to anticancer agents, but the identification of actionable mutations are often constrained ...
journal_title:Briefings in bioinformatics
pub_type: 杂志文章
doi:10.1093/bib/bbz109
更新日期:2020-12-01 00:00:00