例如:"lncRNA", "apoptosis", "WRKY"

Frataxin gene editing rescues Friedreich's ataxia pathology in dorsal root ganglia organoid-derived sensory neurons.

Nat Commun. 2020 Aug 21;11(1):4178
Pietro Giuseppe Mazzara 1 , Sharon Muggeo 2 , Mirko Luoni 2 , Luca Massimino 2 , Mattia Zaghi 2 , Parisa Tajalli-Tehrani Valverde 2 , Simone Brusco 2 , Matteo Jacopo Marzi 3 , Cecilia Palma 4 , Gaia Colasante 2 , Angelo Iannielli 5 , Marianna Paulis 6 , Chiara Cordiglieri 7 , Serena Gea Giannelli 2 , Paola Podini 2 , Cinzia Gellera 8 , Franco Taroni 8 , Francesco Nicassio 3 , Marco Rasponi 4 , Vania Broccoli 9
Pietro Giuseppe Mazzara 1 , Sharon Muggeo 2 , Mirko Luoni 2 , Luca Massimino 2 , Mattia Zaghi 2 , Parisa Tajalli-Tehrani Valverde 2 , Simone Brusco 2 , Matteo Jacopo Marzi 3 , Cecilia Palma 4 , Gaia Colasante 2 , Angelo Iannielli 5 , Marianna Paulis 6 , Chiara Cordiglieri 7 , Serena Gea Giannelli 2 , Paola Podini 2 , Cinzia Gellera 8 , Franco Taroni 8 , Francesco Nicassio 3 , Marco Rasponi 4 , Vania Broccoli 9
+ et al

[No authors listed]

Author information
  • 1 Department of Neuroscience, The Scripps Research Institute, 92037, La Jolla, CA, USA.
  • 2 Division of Neuroscience, San Raffaele Scientific Institute, 20132, Milan, Italy.
  • 3 Center for Genomic Science of IIT@SEMM, Istituto Italiano di Tecnologia (IIT), 20139, Milan, Italy.
  • 4 Department of Electronics, Information & Bioengineering, Politecnico di Milano, 20133, Milan, Italy.
  • 5 National Research Council (CNR), Institute of Neuroscience, 20129, Milan, Italy.
  • 6 Humanitas Clinical and Research Center, 20089, Rozzano, Milano, Italy.
  • 7 National Institute of Molecular Genetics "Romeo e Enrica Invernizzi" - INGM, 20122, Milan, Italy.
  • 8 Unit of Medical Genetics and Neurogenetics, Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133, Milan, Italy.
  • 9 National Research Council (CNR), Institute of Neuroscience, 20129, Milan, Italy. broccoli.vania@hsr.it.

摘要


Friedreich's ataxia is an autosomal-recessive neurodegenerative and cardiac disorder which occurs when transcription of the FXN gene is silenced due to an excessive expansion of GAA repeats into its first intron. Herein, we generate dorsal root ganglia organoids (DRG organoids) by in vitro differentiation of human iPSCs. Bulk and single-cell RNA sequencing show that DRG organoids present a transcriptional signature similar to native DRGs and display the main peripheral sensory neuronal and glial cell subtypes. Furthermore, when co-cultured with human intrafusal muscle fibers, DRG organoid sensory neurons contact their peripheral targets and reconstitute the muscle spindle proprioceptive receptors. DRG organoids model some molecular and cellular deficits of the disease that are rescued when the entire FXN intron 1 is removed, and not with the excision of the expanded GAA tract. These results strongly suggest that removal of the repressed chromatin flanking the GAA tract might contribute to rescue FXN total expression and fully revert the pathological hallmarks of Fduanyu1650 DRG neurons.