{"title":"Lung-on-a-chip composed of styrene-butadiene-styrene nano-fiber/porous PDMS composite membranes with cyclic triaxial stimulation","authors":"Yuru You, Changling Zhang, Zhixiang Guo, Feng Xu, Daoheng Sun, Junjie Xia, Songyue Chen","doi":"10.1007/s10404-024-02739-7","DOIUrl":null,"url":null,"abstract":"<div><p>The physiological function of lung is strongly correlated with its unique structural microenvironment and mechanical stimulation. Most existing lung-on-a-chips (LOCs) do not replicate the key physiological structure and stimulation of human lung, reducing their reliability in application. In this study, a scaffold structure of a styrene-butadiene-styrene (SBS) nanofiber and porous honeycomb polydime-thylsiloxane (PDMS) composite membrane was developed to construct an alveolar air-blood barrier that mimics the alveolar characteristics of flexibility, cross-scale structure, and triaxial mechanical stimulation. By combining micro-fluidic and electrospinning technology, a biomimetic LOC with dynamic triaxial cyclic strain was realized. The composite membrane had a Young’s modulus of 0.54 ± 0.05 MPa and was capable of 8–12% strain at 1 kPa air pressure. We monocultured and co-cultured human non-small cell lung cancer cells stably expressing red fluorescent protein (A549-RFP) with human umbilical vein endothelial cell stably expressing green fluorescent protein (HUVECs-GFP) within the chip. A multi-layered structure of epithelial cell layer-basal layer-endothelial cell layer, similar to the air-blood barrier in vivo, was constructed. The LOC was proved to be an initial foundation for creating in vitro alveolar physiological models, and could be a potential platform for application in physiology, pathology, toxicology, drug screening, and customized medicine.</p></div>","PeriodicalId":706,"journal":{"name":"Microfluidics and Nanofluidics","volume":"28 7","pages":""},"PeriodicalIF":2.3000,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Microfluidics and Nanofluidics","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10404-024-02739-7","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"INSTRUMENTS & INSTRUMENTATION","Score":null,"Total":0}
引用次数: 0
Abstract
The physiological function of lung is strongly correlated with its unique structural microenvironment and mechanical stimulation. Most existing lung-on-a-chips (LOCs) do not replicate the key physiological structure and stimulation of human lung, reducing their reliability in application. In this study, a scaffold structure of a styrene-butadiene-styrene (SBS) nanofiber and porous honeycomb polydime-thylsiloxane (PDMS) composite membrane was developed to construct an alveolar air-blood barrier that mimics the alveolar characteristics of flexibility, cross-scale structure, and triaxial mechanical stimulation. By combining micro-fluidic and electrospinning technology, a biomimetic LOC with dynamic triaxial cyclic strain was realized. The composite membrane had a Young’s modulus of 0.54 ± 0.05 MPa and was capable of 8–12% strain at 1 kPa air pressure. We monocultured and co-cultured human non-small cell lung cancer cells stably expressing red fluorescent protein (A549-RFP) with human umbilical vein endothelial cell stably expressing green fluorescent protein (HUVECs-GFP) within the chip. A multi-layered structure of epithelial cell layer-basal layer-endothelial cell layer, similar to the air-blood barrier in vivo, was constructed. The LOC was proved to be an initial foundation for creating in vitro alveolar physiological models, and could be a potential platform for application in physiology, pathology, toxicology, drug screening, and customized medicine.
期刊介绍:
Microfluidics and Nanofluidics is an international peer-reviewed journal that aims to publish papers in all aspects of microfluidics, nanofluidics and lab-on-a-chip science and technology. The objectives of the journal are to (1) provide an overview of the current state of the research and development in microfluidics, nanofluidics and lab-on-a-chip devices, (2) improve the fundamental understanding of microfluidic and nanofluidic phenomena, and (3) discuss applications of microfluidics, nanofluidics and lab-on-a-chip devices. Topics covered in this journal include:
1.000 Fundamental principles of micro- and nanoscale phenomena like,
flow, mass transport and reactions
3.000 Theoretical models and numerical simulation with experimental and/or analytical proof
4.000 Novel measurement & characterization technologies
5.000 Devices (actuators and sensors)
6.000 New unit-operations for dedicated microfluidic platforms
7.000 Lab-on-a-Chip applications
8.000 Microfabrication technologies and materials
Please note, Microfluidics and Nanofluidics does not publish manuscripts studying pure microscale heat transfer since there are many journals that cover this field of research (Journal of Heat Transfer, Journal of Heat and Mass Transfer, Journal of Heat and Fluid Flow, etc.).