ArticleBiophysical journal2013
Temperature dependence of IP3-mediated local and global Ca2+ signals.
Article in Biophysical journal, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 11 citations in OpenAlex.
- Pulsed infrared releases CaJournal of neurophysiology · 2018Article
- Systematic Characterization of Dynamic Parameters of Intracellular Calcium Signals.Frontiers in physiology · 2016Article
- Article
- Termination of calcium puffs and coupled closings of inositol trisphosphate receptor channels.Cell calcium · 2014Article
- Frequency and relative prevalence of calcium blips and puffs in a model of small IP₃R clusters.Biophysical journal · 2014Article
- Microscopic heat pulse-induced calcium dynamics in single WI-38 fibroblasts.Biophysics (Nagoya-shi, Japan) · 2014Article
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
Abstract
We examined the effect of temperature (12-40°C) on local and global Ca2+ signals mediated by inositol trisphosphate receptor/channels (IP3R) in human neuroblastoma (SH-SY5Y) cells. The amplitudes and spatial spread of local signals arising from single IP3R (blips) and clusters of IP3R (puffs) showed little temperature dependence, whereas their kinetics (durations and latencies) were markedly accelerated by increasing temperature. In contrast, the amplitude of global Ca2+ waves increased appreciably at lower temperatures, probably as a result of the longer duration of IP(3)R channel opening. Several parameters, including puff and blip durations, puff latency and frequency, and frequency of repetitive Ca2+ waves, showed a biphasic temperature dependence on Arrhenius plots. In all cases the transition temperature occurred at ∼25°C, possibly reflecting a phase transition in the lipids of the endoplasmic reticulum membrane. Although the IP3-evoked Ca2+ signals were qualitatively similar at 25°C and 36°C, one should consider the temperature sensitivity of IP3-mediated signal amplitudes when extrapolating from room temperature to physiological temperature. Conversely, further cooling may be advantageous to improve the optical resolution of channel gating kinetics.
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