デジタル・ツインでオーダーメイド投薬が可能に(Digital twin allows for tailored medication)

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2024-03-20 カロリンスカ研究所(KI)

カロリンスカ研究所の研究者による国際的な研究により、自己免疫疾患を持つ個々の患者に、デジタルツインと呼ばれる計算モデルを用いて数千種類の薬を試し、最適な治療法を見つけることができることが明らかにされた。この手法は、患者の組織から多数の細胞内の遺伝子活動を測定し、コンピューターモデルを構築することで実現され、患者に合った薬物治療を個別に選択する可能性が高まる。

<関連情報>

scDrugPrio:免疫介在性炎症性疾患における精密医療における複数の問題に対処するための単一細胞トランスクリプトミクス解析のためのフレームワーク scDrugPrio: a framework for the analysis of single-cell transcriptomics to address multiple problems in precision medicine in immune-mediated inflammatory diseases

Samuel Schäfer,Martin Smelik,Oleg Sysoev,Yelin Zhao,Desiré Eklund,Sandra Lilja,Mika Gustafsson,Holger Heyn,Antonio Julia,István A. Kovács,Joseph Loscalzo,Sara Marsal,Huan Zhang,Xinxiu Li,Danuta Gawel,Hui Wang & Mikael Benson
Genome Medicine  Published:20 March 2024
DOI:https://doi.org/10.1186/s13073-024-01314-7

デジタル・ツインでオーダーメイド投薬が可能に(Digital twin allows for tailored medication)

Abstract

Background
Ineffective drug treatment is a major problem for many patients with immune-mediated inflammatory diseases (IMIDs). Important reasons are the lack of systematic solutions for drug prioritisation and repurposing based on characterisation of the complex and heterogeneous cellular and molecular changes in IMIDs.

Methods
Here, we propose a computational framework, scDrugPrio, which constructs network models of inflammatory disease based on single-cell RNA sequencing (scRNA-seq) data. scDrugPrio constructs detailed network models of inflammatory diseases that integrate information on cell type-specific expression changes, altered cellular crosstalk and pharmacological properties for the selection and ranking of thousands of drugs.

Results
scDrugPrio was developed using a mouse model of antigen-induced arthritis and validated by improved precision/recall for approved drugs, as well as extensive in vitro, in vivo, and in silico studies of drugs that were predicted, but not approved, for the studied diseases. Next, scDrugPrio was applied to multiple sclerosis, Crohn’s disease, and psoriatic arthritis, further supporting scDrugPrio through prioritisation of relevant and approved drugs. However, in contrast to the mouse model of arthritis, great interindividual cellular and gene expression differences were found in patients with the same diagnosis. Such differences could explain why some patients did or did not respond to treatment. This explanation was supported by the application of scDrugPrio to scRNA-seq data from eleven individual Crohn’s disease patients. The analysis showed great variations in drug predictions between patients, for example, assigning a high rank to anti-TNF treatment in a responder and a low rank in a nonresponder to that treatment.

Conclusions
We propose a computational framework, scDrugPrio, for drug prioritisation based on scRNA-seq of IMID disease. Application to individual patients indicates scDrugPrio’s potential for personalised network-based drug screening on cellulome-, genome-, and drugome-wide scales. For this purpose, we made scDrugPrio into an easy-to-use R package (https://github.com/SDTC-CPMed/scDrugPrio).

医療・健康
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