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CF (1565) vs CFTR-corrected (1564) iPSC_airway at ALI

ABSTRACT: CF (1565) vs CFTR-corrected (1564) iPSC_airway at ALI

PROVIDER: PRJNA838010 | ENA |

REPOSITORIES: ENA

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CF (1565) vs CFTR-corrected (1564) iPSC_airway at ALI

Project description:Platform: iPSC-derived airway plated on 2D-air liquid interface through basal cell intermediate. Purpose of experiment: To examine the role of mutant CFTR on IPSC-derived airway epithelium (ie. immune dysregulation; dysregulated calcium channel signaling etc). Description of samples:Typical phenotype CF F508del (1565) and syngeneic CFTR-corrected (1564) iPSCs- derived airway epithelium at D90 (D15 CD47hi/CD26lo; replated in 3DMG cultured in 210DCIY x 2 weeks, single-cell passaged and cultured in PNExPlus+dual smad media in 3D, s/p 2 NGFR sorts, cultured at air-liquid interface at 2D)

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Project description:To interrogate the intrinsic effect of CFTR on airway epithelium; to interrogate the presence of FOXi1+ASLC3+ ionocyte population. Description of samples:1567 (F508del CF patient of rapid progressive phenotye) and 1566 (isogenic CFTR-repaired pair). iPSC-derived airway epithelium, s/p D15CD47hi/CD26lo sort, 210DCYI media x

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Hypoxia induces hypersecretory phenotype, impaired ciliary function and altered CFTR activity in air-liquid interface cultures of cystic fibrosis primary nasal epithelial cells. (ALI cell)

Project description:Atmospheric oxygen tension is increasingly recognized to be hyperoxic for the maintenance of in vitro cell cultures. Oxygen has broad implications on energy metabolism, cellular growth and many regulatory functions. Primary airway epithelial cells (AECs) differentiated at air-liquid interface (ALI) are the gold standard for preclinical assessment of cystic fibrosis transmembrane conductance regulatory (CFTR) modulator efficacy in CF. The fidelity of CF AECs cultured at atmospheric oxygen tension rather than at reduced oxygen tension which more closely reflect the in vivo environment has not been studied to date. This study examined the impact of ambient (21%) and low (2%) oxygen tension on the expansion and differentiation of nasal epithelial cells (hNECs) derived from 11 participants (8 with CF and 3 non-CF). hNECs expanded under normoxic and chronic hypoxic conditions demonstrated epithelial cobblestone morphology and similar proliferation rate. hNECs differentiated at hypoxia demonstrated poorer differentiation capacity (significantly thinner epithelium and lower TEER) and a shift from ciliated to secretory epithelial phenotype. Hypoxic differentiated hNECs had significantly shorter cilia length, slower beating frequency but had improved cilia coordination. CFTR functional response is altered in hypoxic differentiated hNECs. This study highlights the need to reconsider the oxygen tension used in CF primary cell cultures so as to preserve the characteristics and functional response of the cell models as we progress towards personalised medicine in CF.

2023-03-25 | PXD038893 | Pride

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