Cathepsin B pH-Dependent Activity Is Involved in Lysosomal Dysregulation in Atrophic Age-Related Macular Degeneration
المؤلفون المشاركون
Voisin, Audrey
Monville, Christelle
Plancheron, Alexandra
Béré, Emile
Gaillard, Afsaneh
Leveziel, Nicolas
المصدر
Oxidative Medicine and Cellular Longevity
العدد
المجلد 2019، العدد 2019 (31 ديسمبر/كانون الأول 2019)، ص ص. 1-15، 15ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2019-12-06
دولة النشر
مصر
عدد الصفحات
15
التخصصات الرئيسية
الملخص EN
Age-related macular degeneration (AMD) is characterized by retinal pigment epithelial (RPE) cell dysfunction beginning at early stages of the disease.
The lack of an appropriate in vitro model is a major limitation in understanding the mechanisms leading to the occurrence of AMD.
This study compared human-induced pluripotent stem cell- (hiPSC-) RPE cells derived from atrophic AMD patients (77 y/o±7) to hiPSC-RPE cells derived from healthy elderly individuals with no drusen or pigmentary alteration (62.5 y/o±17.5).
Control and AMD hiPSC-RPE cell lines were characterized by immunofluorescence, flow cytometry, and electronic microscopy.
The toxicity level of iron after Fe-NTA treatment was evaluated by an MTT test and by the detection of dichloro-dihydro-fluorescein diacetate.
Twelve hiPSC-RPE cell lines (6 AMD and 6 controls) were used for the experiment.
Under basal conditions, all hiPSC-RPE cells expressed a phenotypic profile of senescent cells with rounded mitochondria at passage 2.
However, the treatment with Fe-NTA induced higher reactive oxygen species production and cell death in hiPSC-RPE AMD cells than in hiPSC-RPE Control cells.
Interestingly, functional analysis showed differences in lysosomal activity between the two populations.
Indeed, Cathepsin B activity was higher in hiPSC-RPE AMD cells compared to hiPSC-RPE Control cells in basal condition and link to a pH more acidic in this cell population.
Moreover, oxidative stress exposure leads to an increase of Cathepsin D immature form levels in both populations, but in a higher proportion in hiPSC-RPE AMD cells.
These findings could demonstrate that hiPSC-RPE AMD cells have a typical disease phenotype compared to hiPSC-RPE Control cells.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Voisin, Audrey& Monville, Christelle& Plancheron, Alexandra& Béré, Emile& Gaillard, Afsaneh& Leveziel, Nicolas. 2019. Cathepsin B pH-Dependent Activity Is Involved in Lysosomal Dysregulation in Atrophic Age-Related Macular Degeneration. Oxidative Medicine and Cellular Longevity،Vol. 2019, no. 2019, pp.1-15.
https://search.emarefa.net/detail/BIM-1204197
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Voisin, Audrey…[et al.]. Cathepsin B pH-Dependent Activity Is Involved in Lysosomal Dysregulation in Atrophic Age-Related Macular Degeneration. Oxidative Medicine and Cellular Longevity No. 2019 (2019), pp.1-15.
https://search.emarefa.net/detail/BIM-1204197
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Voisin, Audrey& Monville, Christelle& Plancheron, Alexandra& Béré, Emile& Gaillard, Afsaneh& Leveziel, Nicolas. Cathepsin B pH-Dependent Activity Is Involved in Lysosomal Dysregulation in Atrophic Age-Related Macular Degeneration. Oxidative Medicine and Cellular Longevity. 2019. Vol. 2019, no. 2019, pp.1-15.
https://search.emarefa.net/detail/BIM-1204197
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1204197
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر