The Presence of Neural Stem Cells and Changes in Stem Cell-Like Activity With Age in Mouse Spiral Ganglion Cells In Vivo and In Vitro
Clinical and Experimental Otorhinolaryngology
; : 224-232, 2018.
Article
ي En
| WPRIM
| ID: wpr-718514
المكتبة المسؤولة:
WPRO
ABSTRACT
OBJECTIVES: Spiral ganglion neurons (SGNs) include potential endogenous progenitor populations for the regeneration of the peripheral auditory system. However, whether these populations are present in adult mice is largely unknown. We examined the presence and characteristics of SGN-neural stem cells (NSCs) in mice as a function of age. METHODS: The expression of Nestin and Ki67 was examined in sequentially dissected cochlear modiolar tissues from mice of different ages (from postnatal day to 24 weeks) and the sphere-forming populations from the SGNs were isolated and differentiated into different cell types. RESULTS: There were significant decreases in Nestin and Ki67 double-positive mitotic progenitor cells in vivo with increasing mouse age. The SGNs formed spheres exhibiting self-renewing activity and multipotent capacity, which were seen in NSCs and were capable of differentiating into neuron and glial cell types. The SGN spheres derived from mice at an early age (postnatal day or 2 weeks) contained more mitotic stem cells than those from mice at a late age. CONCLUSION: Our findings showed the presence of self-renewing and proliferative subtypes of SGN-NSCs which might serve as a promising source for the regeneration of auditory neurons even in adult mice.
Key words
النص الكامل:
1
الفهرس:
WPRIM
الموضوع الرئيسي:
Regeneration
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Stem Cells
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In Vitro Techniques
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Spiral Ganglion
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Neuroglia
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Cochlea
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Deafness
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Neural Stem Cells
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Nestin
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Hearing Loss
المحددات:
Animals
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Humans
اللغة:
En
مجلة:
Clinical and Experimental Otorhinolaryngology
السنة:
2018
نوع:
Article