Table 1 Summary of the application of organoids to study SARS-CoV-2
 | Entry factor expression | Tropism | Host response | Therapeutic discovery | ||||
---|---|---|---|---|---|---|---|---|
Small molecules | Antibodies/peptides | Vaccines | ||||||
Respiratory organoids | ALOs | hPSC-ALOs | ACE2 in AT2 cells; | Apoptosis52; upregulation of inflammatory, NF-κB signaling, and loss of the mature alveolar population50; induction of chemokine, TNF signaling, IL-17 signaling and cytokine–cytokine receptor interaction pathways47 | Remdesivir50,52; antiandrogenic drugs51; imatinib, mycophenolic acid and quinacrine dihydrochloride47; camostat/nafamostat48; 25HC54 | Human neutralizing antibody52; EK1 peptide48 |  | |
Adult ALOs | ACE2 in AT2 cells59; TMPRSS2 widely expressed55 | Apoptosis59; upregulation of type I/III interferon response55,56; interferon-mediated inflammatory responses, loss of surfactant proteins, apoptosis57,67; upregulation of epithelial cell-autonomous pro-inflammatory response67 | Â | Â | ||||
AWOs | hPSC-AWOs | ACE2, NRP1 and TMPRSS2 in ciliated cells; FURIN and CTSL widely expressed52,60 | Apoptosis52; downregulation of lipid metabolism52; upregulation of glycolysis50 | Remdesivir52; GW6471, xanthohumol, 5-(tetradecyloxy)-2-furoic acid and ND-646 (ref. 60) | Human neutralizing antibody52 | Â | ||
Adult AWOs | ACE2 in ciliated cells60 | Â | Induction of ISGs, cytokines and chemokines62; | Â | Humanized decoy antibody (ACE2-Fc)63 | Â | ||
IOs | SIOs | hPSC-SLOs | ACE2 and TMPRSS2 in the gastrointestinal tract71 | Enteroendocrine and paneth cells71 | Apoptosis and a robust transcriptomic response, including ISGs71 | Remdesivir71 | Peptides or antibodies toward IFITM72 | Â |
Adult SLOs | ACE2 in enterocytes75 | Enterocytes75 | Induction of cytokines and ISGs attributed to type I and III interferon responses75 | Â | Â | Â | ||
COs | hPSC-COs | ACE2 in enterocytes47 | Enterocytes47 | Induction of cytokines and chemokines47 | Imatinib, mycophenolic acid and quinacrine dihydrochloride47 | Â | Â | |
Adult COs | ACE2 in enterocytes; TMPRSS2, FURIN and CTSL in COs77 | Enterocytes75 | Induction of pro-inflammatory pathway and interferon-mediated signaling pathway77 | Â | Â | Â | ||
ILOs | Adult ILOs | Enterocytes75 | Induction of pro-inflammatory pathway and interferon-mediated signaling pathway77 | Â | Â | Â | ||
KOs | hPSC-KOs | Â | Â | MEDS433 (ref. 83) | Â | |||
LOs | hPSC-LOs | ACE2 in hepatocytes84 | Hepatocytes84 | Upregulation of cytokine–cytokine receptor interaction, IL-17 signaling, chemokine signaling pathway, TNF signaling and NF-κB signaling pathway; downregulation of cellular metabolism84 |  |  |  | |
Adult LOs | ACE2 in cholangiocytes85; TMPRSS2 is broadly expressed85 | Induction of cytokine–cytokine receptor interaction, IL-17 signaling, chemokine signaling pathway, TNF signaling and NF-κB signaling pathway84 | Remdesivir63 | rsACE2 (ref. 63) |  | |||
BOs | hPSC-BOs | ACE2 is expressed, but low levels of TMPRSS2 were detected48 | Limited infection in cortical astrocytes88 | Innate immunity and neurodegeneration genes48; distribution of Tau from axons to soma, and hyperphosphorylation and neuronal death90; metabolic changes91 | Â | ACE2 antibodies91 | Â | |
hPSC-CPOs | ACE2 in mature choroid plexus cells94; TMPRSS2 and NRP1 in CPOs88 | Choroid plexus, astrocytes and radial glial progenitors93 | Induction of type I interferon astrocytic response95; cell death, inflammatory response and cellular function deficits88; epithelial damage, leakage of blood–brain barrier94 |  |  |  | ||
TOs | Adult TOs | Â | Â | Â | Â | Â | SARS-CoV-2 vaccine | |
ROs | hPSC-ROs | ACE2 and TMPRSS2 in hPSC-ROs98 | Â | Â | Â | Â | Â | |
Adult ROs | ACE2 and TMPRSS2 in cornea, limbus, sclera and retinal pigment epithelium99 | Cornea, limbus, sclera and retinal pigment epithelium99 | Host immune response, including NF-κB signaling pathway99 |  |  |  | ||
CDOs | hPSC-CDOs |  |  | Upregulation of pro-inflammatory factors, including IFN-γ, IL-1β and poly(I:C), drive systolic and diastolic cardiac dysfunction101 | INCB054329 (ref. 101) |  |  | |
CAPOs | hPSC-CAPOs | Â | Â | Â | Â | hrsACE2 (ref. 81) | Â |