|
Á¢¼ö¹øÈ£ - 270146 5 |
IN VITRO PRIMARY NASAL EPITHELIAL CELL CULTURE USING HUMAN-DERIVED
HYDRO-ORGANOID CULTURE SYSTEM |
DEPARTMENT OF OTORHINOLARYNGOLOGY SEOUL NATIONAL UNIVERSITY COLLEGE OF MEDICINE1, DEPARTMENT OF MECHANICAL ENGINEERING KOREA UNIVERSITY2, NEXT&BIO3 |
SEUNG HOON HAN1, SUN A HAN1, YOUNG CHANG SHIM1, WON WOOK LEE1, TAE HWAN KWAK2,3, JIHUN YANG3, SEOK CHUNG2,3, HYUN JIK KIM1 |
¸ñÀû: Primary nasal epithelial cells (NEC) are used for diagnostic purposes
in clinical routine and have been shown to be good surrogate models in
studies of nasal inflammation, allergic rhinitis and immune responses
against nasal pathogens. However, for cell culture, it is necessary to
obtain human tissue invasively for every experiment, and it takes a
long time to establish a full differentiation, so there are still many
limitations in using it for repeated in vitro experiments. We describe
a NEC organoid model derived from human nasal samples that is well-
differentiated and recapitulates the airway epithelium with multiple
outcome measurements depending on the application of respiratory
virus. ¹æ¹ý:Eight organoids derived from five human nasal mucosa (NB35-NB39) and
three nasal brushing (NB06-111N-113N) were first cultured and the
culture has been completed until passage 3. °á°ú:The histologic results showed that full differentiated nasal
epithelium was obtained at least 14 days after confluence in ALI
culture systems. Both ciliated and secretory cells were observed
through H&E and PAS staining and secreted mucus was also found in
organoid cultures. Transmission electron micrographs also showed well
differentiated cilia and secretory mucus and the findings of scanning
electron microscope revealed that well differentiated cilia, mucin
granules and tight cellular junctions. The mRNA levels of specific
cellular markers for basal progenitor cells, nasal epithelial cells,
secretory cells, and ciliated cells were measured and our NEC organoid
models showed a significant expression of TP63, KRT5, MUC5AC, and
FOXJ1 genes until passage 3. °á·Ð:This highly differentiated nasal epithelial organoid model could serve
as a surrogate biomarker to assess the characteristics of nasal
epithelium, recapitulating the phenotypic and genotypic diversity
against external stimulations such as respiratory pathogens, allergens
and cytokines. |
|