Project
393-Fujimoto-CoV2Infect
Title
SARS-CoV-2 infection to the co-culture of bronchial organoids and vascular beds in a microfluidic device
Description
Blood vessels show various COVID-19-related conditions including thrombosis and cytokine propagation. Existing in vitro blood vessel models cannot represent the consequent changes in the vascular structure or determine the initial infection site, making it difficult to evaluate how epithelial and endothelial tissues are damaged. Here, the authors developed a microphysiological system (MPS) that co-culture the bronchial organoids and the vascular bed to analyze infection site and interactions. In this system, virus-infected organoids caused damage in vascular structure. However, vasculature was not damaged or infected when the virus was directly introduced to vascular bed. The knockout of interferon-related genes and inhibition of the JAK/STAT pathway reduced the vascular damage, indicating the protective effect of interferon response suppression. The results demonstrate selective infection of bronchial epithelial cells and vascular damage by cytokines and also indicate the applicability of MPS to investigate how the infection influences vascular structure and functions.
Funding
KAKENHI (Grant-in-Aid for Scientific Research) on Priority Areas ‘Systems Genomics’ [17017038]
Title
Z-series images of KO-VB in the SARS-CoV-2-infected device
Description
Z-series images of KO-VB in the SARS-CoV-2-infected device in which KO-VB and bronchial organoids were co-culured. KO-VB is vascular bed made from IFNAR2 KO (Knocking out interferon alpha and beta receptor subunit 2)-HUVECs.
Channel1: CD31, Channel2: Alexa Fluor 647 labeled phalloidin, Channel3: DAPI, Channel4: Differential interference image
Description
Co-culture of bronchial organoids, which were derived from normal human bronchial epithelial
cells, and vascular beds, which were composed from IFNAR2 KO (Knocking out interferon alpha and beta receptor subunit 2)-HUVECs, in a special microfluidic device.
Intrinsic variables
Interferon alpha and beta receptor subunit 2 were knocked out from Human Umbilical Vein Endothelial Cells.
Extrinsic variables
The SARS-CoV-2 virus was applied to the bronchial organoids
Gene ontology: Biological processes
Gene ontology: Cellular components
Gene ontology: Molecular functions
Protein names
Platelet endothelial cell adhesion molecule (
P16284)
Actin, cytoplasmic 1 (
P60709)
Dimensions
2048x2048x29x4x1
Y scales
0.31 micrometer/pixel
Visualization methods
primary antibody plus labeled secondary antibody
GFP
4',6-diamidino-2-phenylindole (DAPI)
Contrast enhancing methods
Resolution enhancing methods
Sample preparation methods
fixation method
Body
Olympus-Evident FV3000
Objective
Olympus-Evident LUCPLFLN20X