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Development of an in silico human model to visualize the bioregulation mechanisms associated with respiratory infection

Research Project

Project/Area Number 22H00237
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 23:Architecture, building engineering, and related fields
Research InstitutionKyushu University

Principal Investigator

伊藤 一秀  九州大学, 総合理工学研究院, 教授 (20329220)

Co-Investigator(Kenkyū-buntansha) 久我 一喜  九州大学, 総合理工学研究院, 助教 (60905727)
Project Period (FY) 2022-04-01 – 2025-03-31
Project Status Granted (Fiscal Year 2024)
Budget Amount *help
¥42,120,000 (Direct Cost: ¥32,400,000、Indirect Cost: ¥9,720,000)
Fiscal Year 2024: ¥13,130,000 (Direct Cost: ¥10,100,000、Indirect Cost: ¥3,030,000)
Fiscal Year 2023: ¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2022: ¥11,830,000 (Direct Cost: ¥9,100,000、Indirect Cost: ¥2,730,000)
Keywordsin silico human model / CFD / 室内空気質 / 生体防御反応 / 経気道曝露 / Host Cell Dynamics / Inhalation Exposure / Respiratory Infection / Thermo-regulation / Indoor Air Quality
Outline of Research at the Start

本研究では,建築学・工学と医学の知見を統合し,in vivo,in vitro試験の代替ポテンシャルを有するin silico人体モデルの可能性を追求する.特に,経気道感染に伴う生体防御反応を数値的に予測可能なin silico人体モデルと環境解析手法を高度に統合し,感染リスク・健康影響の可視化手法を確立することで,in silico人体モデルを中心とした空気環境設計法の有効性を追求する.

Outline of Annual Research Achievements

(2-1) 生体防御反応モデル(体内感染症数理モデル)のパラメータ同定:各細胞に対する感染確率,抗ウイルス効率,移行率,クリアランス等のモデルパラメータをin vivo,in vitro実験データよりデータベース化した.最新の報告例の多いSARS-CoV-2を対象としたHost Cell Dynamics Model (宿主細胞ダイナミクスモデル)を構築し,モデルパラメータを同定した上で,2022年度に作成したin silicoモデルに実装した.
(2-2) 経気道曝露による感染リスクの可視化手法の確立:感染性物質の気道内粘膜上皮への沈着は非定常・不均一な分布となり,特に感染性物質の沈着量が局大化する部位 (Hot Spot)は感染リスク制御の点で重要な情報となる.気道内の感染性病原物質輸送(繊毛運動による粘液輸送)と沈着,生体防御反応の統合解析手法を確立し,SARS-CoV-2含有飛沫・飛沫核による経気道曝露・感染シミュレーションを実施し,室内から人体細胞内までの非定常・不均一感染リスクを3次元可視化表示する手法を確立した.
(2-3) in silico人体モデルを中核とした人体-室内環境系統合解析手法の確立:2022年度に開発したEWFモデルを気道モデルに実装した上で,咳による飛沫生成解析を建築空間を対象とした流れ場・温度場・湿度場の連成解析手法に統合した.さらに,感染性物質を対象としたEuler-Lagrange系の数値解析手法を統合することで,総合的な空気環境解析手法を確立した.
(2-4)サーマルマネキンを用いて経気道曝露ならびに経皮曝露を想定した濃度場測定実験を実施し,in silico人体モデルを用いた曝露解析の予測精度検証用データを蓄積した.

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

特に大きな変更点や問題無く,当初の研究計画に従って研究を推進している.既に,本研究に関連する研究分野ではトップジャーナルとなるComputer Methods and Programs in BiomedicineならびにBuilding and Environmentなどに複数の研究成果も公表されており,順調に研究が進展していると判断している.

Strategy for Future Research Activity

当初の件研究計画に従って順調に研究を推進していることから,今後も研究計画に従って着実に研究を推進する予定である.

Report

(3 results)
  • 2023 Annual Research Report
  • 2022 Comments on the Screening Results   Annual Research Report
  • Research Products

    (42 results)

All 2023 2022 Other

All Int'l Joint Research (2 results) Journal Article (24 results) (of which Int'l Joint Research: 13 results,  Peer Reviewed: 24 results,  Open Access: 6 results) Presentation (14 results) (of which Int'l Joint Research: 14 results) Remarks (2 results)

  • [Int'l Joint Research] 豪州RMIT大学(オーストラリア)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] デンマーク工科大学(デンマーク)

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Spatial distributions of airborne transmission risk on commuter buses: Numerical case study using computational fluid and particle dynamics with computer-simulated persons2023

    • Author(s)
      Yoo SJ, Kurokawa A, Matsunaga K, Ito K.
    • Journal Title

      Experimental and Computational Multiphase Flow

      Volume: 0 Issue: 3 Pages: 1-15

    • DOI

      10.1007/s42757-022-0146-6

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Large eddy simulation of droplet transport and deposition in the human respiratory tract to evaluate inhalation risk2023

    • Author(s)
      Murga Alicia、Bale Rahul、Li Chung-Gang、Ito Kazuhide、Tsubokura Makoto
    • Journal Title

      PLOS Computational Biology

      Volume: 19 Issue: 3 Pages: 1-21

    • DOI

      10.1371/journal.pcbi.1010972

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Effect of transient breathing cycle on the deposition of micro and nanoparticles on respiratory walls2023

    • Author(s)
      Kuga Kazuki、Kizuka Ryusei、Khoa Nguyen Dang、Ito Kazuhide
    • Journal Title

      Computer Methods and Programs in Biomedicine

      Volume: 236 Pages: 107501-107501

    • DOI

      10.1016/j.cmpb.2023.107501

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Computational fluid-particle dynamics modeling of ultrafine to coarse particles deposition in the human respiratory system, down to the terminal bronchiole2023

    • Author(s)
      Khoa Nguyen Dang、Li Sixiao、Phuong Nguyen Lu、Kuga Kazuki、Yabuuchi Hidetake、Kan-O Keiko、Matsumoto Koichiro、Ito Kazuhide
    • Journal Title

      Computer Methods and Programs in Biomedicine

      Volume: 237 Pages: 107589-107589

    • DOI

      10.1016/j.cmpb.2023.107589

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Visual prediction and parameter optimization of viral dynamics in the mucus milieu of the upper airway based on CFPD-HCD analysis2023

    • Author(s)
      Li Hanyu、Kuga Kazuki、Ito Kazuhide
    • Journal Title

      Computer Methods and Programs in Biomedicine

      Volume: 238 Pages: 107622-107622

    • DOI

      10.1016/j.cmpb.2023.107622

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Identification of probabilistic size of breathing zone during single inhalation phase in semi-outdoor environmental scenarios2023

    • Author(s)
      Abouelhamd Islam、Kuga Kazuki、Yoo Sung-Jun、Ito Kazuhide
    • Journal Title

      Building and Environment

      Volume: 243 Pages: 110672-110672

    • DOI

      10.1016/j.buildenv.2023.110672

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Seamless numerical analysis of transient infectious droplet dispersion and inhalation exposure - In silico study2023

    • Author(s)
      Nishihara Takumi、Li Hanyu、Kuga Kazuki、Ito Kazuhide
    • Journal Title

      Building and Environment

      Volume: 244 Pages: 110748-110748

    • DOI

      10.1016/j.buildenv.2023.110748

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A pilot numerical study of odorant transport to the olfactory region during sensory evaluations following ISO 16000-282023

    • Author(s)
      Kuga Kazuki、Hoshiyama Sara、Wargocki Pawel、Ito Kazuhide
    • Journal Title

      Building and Environment

      Volume: 245 Pages: 110868-110868

    • DOI

      10.1016/j.buildenv.2023.110868

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Coupled Eulerian Wall Film?Discrete Phase model for predicting respiratory droplet generation during a coughing event2023

    • Author(s)
      Khoa Nguyen Dang、Kuga Kazuki、Inthavong Kiao、Ito Kazuhide
    • Journal Title

      Physics of Fluids

      Volume: 35 Issue: 11 Pages: 0-0

    • DOI

      10.1063/5.0174014

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Breathing zone and exhaled air re‐inhalation rate under transient conditions assessed with a computer‐simulated person2022

    • Author(s)
      Kuga Kazuki、Wargocki Pawel、Ito Kazuhide
    • Journal Title

      Indoor Air

      Volume: 32 Issue: 2 Pages: 13003-13003

    • DOI

      10.1111/ina.13003

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The effects of ventilation and temperature on sleep quality and next-day work performance: pilot measurements in a climate chamber2022

    • Author(s)
      Fan Xiaojun、Shao Huiqi、Sakamoto Mitsuharu、Kuga Kazuki、Lan Li、Wyon David P.、Ito Kazuhide、Bivolarova Mariya P.、Liao Chenxi、Wargocki Pawel
    • Journal Title

      Building and Environment

      Volume: 209 Pages: 108666-108666

    • DOI

      10.1016/j.buildenv.2021.108666

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] CO2 emission rates from sedentary subjects under controlled laboratory conditions2022

    • Author(s)
      Sakamoto Mitsuharu、Li Mengze、Kuga Kazuki、Ito Kazuhide、Bek? Gabriel、Williams Jonathan、Wargocki Pawel
    • Journal Title

      Building and Environment

      Volume: 211 Pages: 108735-108735

    • DOI

      10.1016/j.buildenv.2021.108735

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Exhaled Jet and Viral-Laden Aerosol Transport from Nasal Sneezing2022

    • Author(s)
      Salati Hana、Fletcher David F.、Khamooshi Mehrdad、Dong Jingliang、Ito Kazuhide、Vahaji Sara、Inthavong Kiao
    • Journal Title

      Aerosol and Air Quality Research

      Volume: 22 Issue: 4 Pages: 210338-210338

    • DOI

      10.4209/aaqr.210338

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] SARS-CoV-2 Dynamics in the Mucus Layer of the Human Upper Respiratory Tract Based on Host?Cell Dynamics2022

    • Author(s)
      Li Hanyu、Kuga Kazuki、Ito Kazuhide
    • Journal Title

      Sustainability

      Volume: 14 Issue: 7 Pages: 3896-3896

    • DOI

      10.3390/su14073896

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Multiscale analysis of material flow and computational fluid dynamics for predicting individual diethyl-hexyl phthalate exposure concentration in indoors2022

    • Author(s)
      Muta Ryota、Yoo Sung-Jun、Kim Hyuntae、Matsumoto Toru、Ito Kazuhide
    • Journal Title

      Indoor and Built Environment

      Volume: 31 Issue: 9 Pages: 2291-2311

    • DOI

      10.1177/1420326x221092613

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Rigorous mathematical formulation of net escape velocity and net escape probability determining a macroscopic concentration2022

    • Author(s)
      Ikegaya Naoki、Ito Kazuhide、Sandberg Mats
    • Journal Title

      Indoor Air

      Volume: 32 Issue: 7 Pages: 13072-73072

    • DOI

      10.1111/ina.13072

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Prediction of exhaled carbon dioxide concentration using a computer‐simulated person that included alveolar gas exchange2022

    • Author(s)
      Kuga Kazuki、Sakamoto Mitsuharu、Wargocki Pawel、Ito Kazuhide
    • Journal Title

      Indoor Air

      Volume: 32 Issue: 8 Pages: 13079-13079

    • DOI

      10.1111/ina.13079

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Numerical models for seamlessly predicting internal diffusion and re-emission of leaked liquid toluene from indoor mortar materials2022

    • Author(s)
      Harashima Hiroshi、Sumiyoshi Eisaku、Ito Kazuhide
    • Journal Title

      Journal of Building Engineering

      Volume: 57 Pages: 104976-104976

    • DOI

      10.1016/j.jobe.2022.104976

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Transport and deposition of inhaled man‐made vitreous and asbestos fibers in realistic human respiratory tract models: An in silico study2022

    • Author(s)
      Dang Khoa Nguyen、Phuong Nguyen Lu、Takahashi Ken、Ito Kazuhide
    • Journal Title

      JAPAN ARCHITECTURAL REVIEW

      Volume: 5 Issue: 4 Pages: 592-608

    • DOI

      10.1002/2475-8876.12277

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Error analysis of human inhalation exposure simulation in industrial workshop2022

    • Author(s)
      Wang Yukun、Shen Xiong、Yoo Sung-Jun、Long Zhengwei、Ito Kazuhide
    • Journal Title

      Building and Environment

      Volume: 224 Pages: 109573-109573

    • DOI

      10.1016/j.buildenv.2022.109573

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Internal diffusion and re‐emission of leaked liquid ethyl acetate from mortar materials2022

    • Author(s)
      Harashima Hiroshi、Sumiyoshi Eisaku、Ito Kazuhide
    • Journal Title

      JAPAN ARCHITECTURAL REVIEW

      Volume: 5 Issue: 4 Pages: 672-681

    • DOI

      10.1002/2475-8876.12297

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Influence of inlet turbulent condition on the formation mechanism of local scalar concentrations2022

    • Author(s)
      Yamasawa Haruna、Hirayama Teruaki、Kuga Kazuki、Muta Ryota、Kobayashi Tomohiro、Ito Kazuhide
    • Journal Title

      JAPAN ARCHITECTURAL REVIEW

      Volume: 5 Issue: 4 Pages: 691-701

    • DOI

      10.1002/2475-8876.12299

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Validation, verification, and quality control of computational fluid dynamics analysis for indoor environments using a computer-simulated person with respiratory tract2022

    • Author(s)
      Yoo SJ, Ito K.
    • Journal Title

      Japan Architectural Review

      Volume: 5 Issue: 4 Pages: 714-727

    • DOI

      10.1002/2475-8876.12301

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Age of air, purging flow rate, and net escape velocity in a cross-ventilation model sheltered by urban-like blocks using LES2022

    • Author(s)
      Fernandez Ken Bryan、Ikegaya Naoki、Ito Kazuhide、Chen Qingyang
    • Journal Title

      Building and Environment

      Volume: 226 Pages: 109759-109759

    • DOI

      10.1016/j.buildenv.2022.109759

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] SARS-CoV-2 infection dynamics integrated with mucociliary transport in human upper airway2022

    • Author(s)
      Hanyu Li, Kazuki Kuga, Kazuhide Ito
    • Organizer
      COBEE 2022, Montiol, Canada, 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Regional deposition characteristics of fibrous particles compared to spherical particles in human upper airway- in silico case study2022

    • Author(s)
      Nguyen Dang Khoa, Kazuhide Ito
    • Organizer
      COBEE 2022, Montiol, Canada, 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Integrated Modeling of CO2 Transport from Indoor to Alveolar Region for Elucidating Human CO2 Emission Mechanism2022

    • Author(s)
      Kazuki Kuga, Kazuhide Ito
    • Organizer
      COBEE 2022, Montiol, Canada, 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Numerical investigation of cough droplets dispersion dynamics in indoor environment: Effect of oral cavity shape2022

    • Author(s)
      Takumi Nishihara, Kazuki Kuga, Kazuhide Ito
    • Organizer
      COBEE 2022, Montiol, Canada, 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Formation of Acetone concentration distribution around breathing zone and transport efficiency to olfactory epithelium cells2022

    • Author(s)
      Sara Hoshiyama, Kazuki Kuga, Kazuhide Ito
    • Organizer
      COBEE 2022, Montiol, Canada, 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Impact of room temperature on human carbon dioxide emission rates at different physical activity levels2022

    • Author(s)
      Kazuki Kuga, Pawel Wargocki, Kazuhide Ito
    • Organizer
      Indoor Air 2022, Kuopio, Finland, June 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Infection dynamics of SARS-CoV-2 in musus later of the human nasal cavity-nasopharynx2022

    • Author(s)
      Hanyu Li, Kazuki Kuga, Kazuhide Ito
    • Organizer
      Roomvent 2022, Xian, China, September 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development of three-dimentional clothing model for computer simulated person integrated with thermoregulation model2022

    • Author(s)
      Sena Hyodo, Kei Murota, Sung-Jun Yoo and Kazuhide Ito
    • Organizer
      Roomvent 2022, Xian, China, September 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Computational analysis of ultrafine and fine particle deposition mechanisms in human lower airway2022

    • Author(s)
      Nguyen Dang Khoa, Kazuhide Ito
    • Organizer
      ACFD 2022, South Korea, October 16-19
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Large Eddy Simulation of Flow and Concentration Distributions in an Indoor Space Surrounded by Urban-like Block Arrays2022

    • Author(s)
      K. B. Fernandeza, Naoki Ikegaya, Kazuhide Ito
    • Organizer
      ACFD 2022, South Korea, October 16-19
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Using CFD to develop a virtual human manikin for infection risk assessment2022

    • Author(s)
      Alicia Muraga, Kazuhide Ito, Makoto Tsubokura
    • Organizer
      ACFD 2022, South Korea, October 16-19
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Indoor Thermal Comfort Assessment Using CFD-CSP Hybrid Analysis2022

    • Author(s)
      Hyun-Gyu Park, Sung-Jun Yoo, Eisaku Sumiyoshi, Hiroshi Harashima and Kazuhide Ito
    • Organizer
      ACFD 2022, South Korea, October 16-19
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Three-Dimensional Modeling and Computational Fluid Dynamics Analysis for Ventilation in Clothing2022

    • Author(s)
      Sena Hyodo, Sung-Jun Yoo and Kazuhide Ito
    • Organizer
      ACFD 2022, South Korea, October 16-19
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Numerical Investigation of Fine particle Transportation and Deposition in the Human Lower Airway: Impact of airflow and particle size on deposition efficiency2022

    • Author(s)
      Nguyen Dang Khoa, Nguyen Lu Phuong, Kazuhide Ito
    • Organizer
      IEICES 2022, IGSES, KU
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Remarks] 九州大学 伊藤一秀研究室

    • URL

      http://www.phe-kyudai.jp

    • Related Report
      2023 Annual Research Report
  • [Remarks] 九州大学総合理工学研究院 伊藤研究室

    • URL

      http://www.phe-kyudai.jp

    • Related Report
      2022 Annual Research Report

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Published: 2022-04-19   Modified: 2024-12-25  

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