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Fluoro-Jade C (FJC) staining is widely used for the specific detection of all degenerating mature neurons, including apoptotic, necrotic, and autophagic cells. However, whether FJC staining can detect degenerating immature neurons and neural stem/precursor cells remains unclear. In addition, some conflicting studies have shown that FJC and its ancestral dyes, Fluoro-Jade (FJ) and FJB, can label resting/activated astrocytes and microglia. In the present study, we examined the validity of FJC staining for the detection of neuronal cells in adult and embryonic mouse brains under normal and injured conditions. In the adult rodent subventricular zone (SVZ)-rostral migratory stream (RMS)-olfactory bulb (OB) system, apoptosis associated with neurogenesis occurs under normal conditions. Using this system, we detected FCJ positive (+) cells, some of which were doublecortin (DCX)(+) neuroblasts, in addition to neuronal nuclei (NeuN)(+) mature neurons. FJC negative (-) apoptotic cells expressing activated Caspase 3 were also observed, and a small number of FJC(+)/ionized calcium-binding adaptor molecule 1 (Iba1)(+) microglia and FJC(+)/glial fibrillary acidic protein (GFAP)(+) astrocytes were observed in the normal brain. Next, we analyzed embryonic brains, in which the apoptosis of neural stem/precursor cells was induced by the administration of N-ethyl-N-nitrosourea (ENU) or ethanol at embryonic day 14 or 10, respectively. In those brains, FJC(+) neural stem/precursor cells and neuroepithelial cells expressing SRY-related HMG-box 2 (Sox2) were observed. Surprisingly degenerating mesenchymal cells were also FJC(+). The present study indicates that FJC is a reliable marker for degenerating neuronal cells during all differentiation stages. However, FJC could also label degenerating non-neuronal cells under some conditions.
Pubmed ID: 31785351 RIS Download
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Mus musculus with name CB6-Tg(Gad1-EGFP)G42Zjh/J from IMSR.
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View all literature mentionsThis monoclonal targets GFAP
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View all literature mentionsThis polyclonal targets GFAP
View all literature mentionsThis polyclonal targets T (Brachyury) (NCBI Gene ID: 6862)
View all literature mentionsThis polyclonal targets ACTIVE& x00AE; Caspase-3
View all literature mentionsThis unknown targets Biotin
View all literature mentionsThis polyclonal targets IgG (H+L)
View all literature mentionsThis unknown targets Guinea Pig IgG (H+L)
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View all literature mentionsThis polyclonal secondary targets IgG (H+L)
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