Structure-aware models and algorithms for reconstructing the evolution and ancestral states of genes and genomes

用于重建基因和基因组的进化和祖先状态的结构感知模型和算法

• 批准号: RGPIN-2017-05552
• 负责人: Ouangraoua, Aida
• 金额: $ 1.46万
• 依托单位: Université de Sherbrooke
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=710775
• 关键词: Structure; aware; models; algorithms; reconstructing

This is a computational genomics research program aimed at solving algorithmic and computational problems in order to improve our understanding of genome evolution. Currently, most genome evolution reconstruction methods are limited to the use of sequence-conserved portions of genomes, paying less attention to the structure of components. However, current discoveries in the life sciences are shedding new light on the complexity of gene structure and its importance for gene function and evolution. In particular, the secondary structure of non-coding RNAs (ncRNAs) and the architecture of eukaryotic coding genes constitute valuable information for the reconstruction of gene evolution and ancestral states. The long-term objective of this program is to develop an integrative approach for reconstructing gene and genome evolution and ancestral states using non-coding and coding genes, while making use of ncRNA folding structure and gene architecture information. For this proposal, the two five-year objectives focus on developing models and algorithms for reconstructing the evolution and ancestral states of ncRNA secondary structures and coding gene architectures. The methodology to reach these objectives consists in first designing improved gene evolution models that take into account full information about coding gene architecture and ncRNA secondary structure. Second, we will consider various bio-inspired optimization problems under the improved evolutionary models, study their theoretical complexity and design appropriate algorithmic solutions. We will use species trees, gene homology relations and architecture/structure information in an integrative approach to reconstruct evolutionary histories and infer ancestral states. We will develop user-friendly software that will be made available and maintained for the community. The impacts of this program will be, first, the contribution to a better understanding of gene and genome structure evolution and the availability of efficient programs and software for computational analyses of these structures. Second, the program will contribute to the training of highly qualified personnel in a growing, demanding, highly multidisciplinary field. Third, it will yield theories and algorithms that are likely to reveal interesting links with more general problems on multiscale structures, trees and graphs.

这是一个计算基因组学研究项目，旨在解决算法和计算问题，以提高我们对基因组进化的理解。目前，大多数基因组进化重建方法都局限于利用基因组的序列保守部分，对组成部分的结构关注较少。然而，目前在生命科学方面的发现正在揭示基因结构的复杂性及其对基因功能和进化的重要性。特别是，非编码rna （ncRNAs）的二级结构和真核编码基因的结构为基因进化和祖先状态的重建提供了有价值的信息。