한빛사논문
Dongmin Bang 1,2, Sangsoo Lim 3, Sangseon Lee 4 & Sun Kim 1,2,5,6,*
1Interdisciplinary Program in Bioinformatics, Seoul National University, Seoul 08826, Republic of Korea.
2AIGENDRUG Co., Ltd., Seoul 08826, Republic of Korea.
3School of Artificial Intelligence Convergence, Dongguk University, Seoul 04620, Republic of Korea.
4Institute of Computer Technology, Seoul National University, Seoul 08826, Republic of Korea.
5Department of Computer Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea.
6Interdisciplinary Program in Artificial Intelligence, Seoul National University, Seoul 08826, Republic of Korea.
*Corresponding author: correspondence to Sun Kim
Abstract
Computational drug repurposing aims to identify new indications for existing drugs by utilizing high-throughput data, often in the form of biomedical knowledge graphs. However, learning on biomedical knowledge graphs can be challenging due to the dominance of genes and a small number of drug and disease entities, resulting in less effective representations. To overcome this challenge, we propose a “semantic multi-layer guilt-by-association" approach that leverages the principle of guilt-by-association - “similar genes share similar functions", at the drug-gene-disease level. Using this approach, our model DREAMwalk: Drug Repurposing through Exploring Associations using Multi-layer random walk uses our semantic information-guided random walk to generate drug and disease-populated node sequences, allowing for effective mapping of both drugs and diseases in a unified embedding space. Compared to state-of-the-art link prediction models, our approach improves drug-disease association prediction accuracy by up to 16.8%. Moreover, exploration of the embedding space reveals a well-aligned harmony between biological and semantic contexts. We demonstrate the effectiveness of our approach through repurposing case studies for breast carcinoma and Alzheimer’s disease, highlighting the potential of multi-layer guilt-by-association perspective for drug repurposing on biomedical knowledge graphs.
논문정보
관련 링크
연구자 키워드
관련분야 연구자보기
관련분야 논문보기
해당논문 저자보기