التفاصيل البيبلوغرافية
| العنوان: |
FTLD Patient–Derived Fibroblasts Show Defective Mitochondrial Function and Accumulation of p62 |
| المؤلفون: |
Leskelä, Stina, Hoffmann, Dorit, Rostalski, Hannah, Huber, Nadine, Wittrahm, Rebekka, Hartikainen, Päivi, Korhonen, Ville, Leinonen, Ville, Hiltunen, Mikko, Solje, Eino, Remes, Anne M., Haapasalo, Annakaisa |
| المساهمون: |
Academy of Finland, Yrjö Jahnssonin Säätiö, Päivikki ja Sakari Sohlbergin Säätiö, Sigrid Juséliuksen Säätiö, Orionin Tutkimussäätiö, H2020 Marie Skłodowska-Curie Actions, Instrumentariumin Tiedesäätiö, Suomen Aivosäätiö, Emil Aaltosen Säätiö, ALS-tutkimuksen tuki ry, Strategic Neuroscience Funding of the University of Eastern Finland |
| المصدر: |
Molecular Neurobiology ; volume 58, issue 11, page 5438-5458 ; ISSN 0893-7648 1559-1182 |
| بيانات النشر: |
Springer Science and Business Media LLC |
| سنة النشر: |
2021 |
| مصطلحات موضوعية: |
Neuroscience (miscellaneous), Cellular and Molecular Neuroscience, Neurology |
| الوصف: |
Frontotemporal lobar degeneration (FTLD) is a clinically, genetically, and neuropathologically heterogeneous group of neurodegenerative syndromes, leading to progressive cognitive dysfunction and frontal and temporal atrophy. C9orf72 hexanucleotide repeat expansion (C9-HRE) is the most common genetic cause of FTLD, but pathogenic mechanisms underlying FTLD are not fully understood. Here, we compared cellular features and functional properties, especially related to protein degradation pathways and mitochondrial function, of FTLD patient–derived skin fibroblasts from C9-HRE carriers and non-carriers and healthy donors. Fibroblasts from C9-HRE carriers were found to produce RNA foci, but no dipeptide repeat proteins, and they showed unchanged levels of C9orf72 mRNA transcripts. The main protein degradation pathways, the ubiquitin–proteasome system and autophagy, did not show alterations between the fibroblasts from C9-HRE-carrying and non-carrying FTLD patients and compared to healthy controls. An increase in the number and size of p62-positive puncta was evident in fibroblasts from both C9-HRE carriers and non-carriers. In addition, several parameters of mitochondrial function, namely, basal and maximal respiration and respiration linked to ATP production, were significantly reduced in the FTLD patient–derived fibroblasts from both C9-HRE carriers and non-carriers. Our findings suggest that FTLD patient–derived fibroblasts, regardless of whether they carry the C9-HRE expansion, show unchanged proteasomal and autophagic function, but significantly impaired mitochondrial function and increased accumulation of p62 when compared to control fibroblasts. These findings suggest the possibility of utilizing FTLD patient–derived fibroblasts as a platform for biomarker discovery and testing of drugs targeted to specific cellular functions, such as mitochondrial respiration. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
English |
| DOI: |
10.1007/s12035-021-02475-x |
| DOI: |
10.1007/s12035-021-02475-x.pdf |
| DOI: |
10.1007/s12035-021-02475-x/fulltext.html |
| الإتاحة: |
https://doi.org/10.1007/s12035-021-02475-xTest |
| حقوق: |
https://creativecommons.org/licenses/by/4.0Test ; https://creativecommons.org/licenses/by/4.0Test |
| رقم الانضمام: |
edsbas.4F4D6A95 |
| قاعدة البيانات: |
BASE |
