Abstract
The goal of this study is to examine whether there is a difference in the regulation of Ca2+ between mitochondria near the cell surface and mitochondria in the cytosol. Total internal reflection fluorescence and epifluorescence microscopy were used to monitor changes in the mitochondrial Ca2+ ([Ca2+]mt,) between the mitochondria near the plasma membrane and those in the cytosol. The results show that [Ca 2+]mt near the plasma membrane increased earlier and decayed slower after high K+ stimulation than average mitochondria in the cytosol. In addition, the changes in [Ca2+]mt in the mitochondria near the cell surface after a second stimulation were larger than those induced by the first stimulation. The results provide direct evidence to support the hypothesis that mitochondria in different subcellular localization show differential responses to the influx of extracellular Ca2+. © 2005 New York Academy of Sciences.
| Original language | English |
|---|---|
| Pages (from-to) | 163-167 |
| Journal | Annals of the New York Academy of Sciences |
| Volume | 1042 |
| DOIs | |
| Publication status | Published - 2005 |
| Externally published | Yes |
Bibliographical note
Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].Research Keywords
- Mitochondria
- Mitochondrial Ca2+
- PC12 cells
- Total internal reflection fluorescence microscopy
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