Reference : Derivation of cochlear cells from pathological or isogenic human iPSCs for modeling h...
Scientific congresses and symposiums : Poster
Life sciences : Biochemistry, biophysics & molecular biology
http://hdl.handle.net/2268/199227
Derivation of cochlear cells from pathological or isogenic human iPSCs for modeling hereditary hearing loss
English
[en] Derivation of cochlear cells from pathological or isogenic human iPSCs for modeling hereditary hearing loss
Czajkowski, Amandine mailto [Université de Liège > > GIGA - Neurosciences >]
Grobarczyk, Benjamin []
Hanon, Kevin mailto [Université de Liège > > GIGA - Neurosciences >]
LEFEBVRE, Philippe mailto [Centre Hospitalier Universitaire de Liège - CHU > > Service d'ORL, d'audiophonologie et de chir. cervico-faciale >]
Delacroix, Laurence mailto [Université de Liège > Département des sciences biomédicales et précliniques > Département des sciences biomédicales et précliniques >]
Malgrange, Brigitte mailto [Université de Liège > > GIGA - Neurosciences >]
May-2016
No
International
10th Molecular Biology of Hearing and Deafness conference
Du 17 au 20 mai 2016
Wellcome genome campus
Hinxton
Royaume Uni
[en] hiPSCs ; ALMS1 ; Differenciation into hair cells
[en] Alström Syndrome (AS) is a human autosomal recessive genetic disorder characterized by numerous clinical symptoms including deafness. AS is caused by mutations in the ALMS1 gene encoding for ALMS1 protein expressed at the basal body and implicated in ciliogenesis, cell cycle and proliferation (Jagger et al., 2011; Zulato et al., 2011 & Shenje et al., 2014). We are interesting in understanding the unknown mechanisms involving this protein in the genetic deafness of AS patients. To develop a model as closer as possible to the human pathology, we are using human induced pluripotent stem cells (hiPSCs) generated from fibroblasts of healthy and AS patients. Using a stepwise protocol, we demonstrated that healthy hiPSCs (waiting for isogenic hiPSCs) can generate a population of cells with gene and protein expression patterns consistent with the ones of otic progenitor cells (OSCs). At this differentiation stage, we observed some proliferation and apoptotic defects between healthy and AS cells. When human OSCs are co-cultured with mouse feeder cells, they are able to differentiate into hair cells (HCs). We successfully differentiated AS hiPSCs generated from AS patients into HCs. We are currently confirming gene expression pattern and testing HCs functionality.  To exclude patient linked epigenetics and differentiation defects, we are correcting the genomic mutation in the AS hiPSCs to generate isogenic hiPSCs using the CRIPSR/Cas9 system. Thanks to the isogenic hiPSCs we will be able to confirm that these defects are well due to the ALMS1 mutation.
Giga-Neurosciences
Fonds pour la formation à la Recherche dans l'Industrie et dans l'Agriculture (Communauté française de Belgique) - FRIA
Derivation of cochlear cells from pathological or isogenic human iPSCs for modeling hereditary hearing loss
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/199227

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