FRET imaging of calcium signaling in live cells in the microenvironment.
FRET imaging of calcium signaling in live cells in the microenvironment.
复制标题
微环境中活细胞中钙信号传导的 FRET 成像。
DOI:
10.1039/c2ib20264f
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
Wang,Yingxiao
中科院分区:
文献类型:
--
作者:
Qian,Tongcheng;Lu,Shaoying;Ma,Hongwei;Fang,Jing;Zhong,Wenxuan;Wang,Yingxiao
The microenvironment has been shown to regulate cellular functions including cell growth, differentiation, proliferation, migration, cancer development and metastasis. However, the underlying molecular mechanism remains largely unclear. We have integrated micro-pattern technology and molecular biosensors based on fluorescence resonance energy transfer (FRET) to visualize calcium responses in cells constrained to grow on a micro-patterned surface. Upon ATP stimulation, human umbilical vein endothelial cells (HUVECs) cultured on different surface micro-patterns had a shorter decay time and a reduced peak of a transient intracellular calcium rise compared to control cells without constraints. The decay time is regulated by the plasma membrane and the membrane calcium channels, while the peak by endoplasmic reticulum (ER) calcium release. Further results revealed that voltage operated channels (VOCs), coupling the plasma membrane and ER, can affect both the decay time and the peak of calcium response. The inhibition of VOCs can eliminate the effect of different micro-patterns on calcium signals. When two connected HUVECs were constrained to grow on a micro-pattern, drastically distinct calcium responses upon ATP stimulation can be observed, in contrast to the similar responses of two connected cells cultured without patterns. Interestingly, the inhibition of VOCs also blocked this difference of calcium responses between two connected cells on micro-patterns. These results indicate that a micro-patterned surface can have a profound effect on the calcium responses of HUVECs under ATP stimulation, largely mediated by VOCs. Therefore, our results shed new light on the molecular mechanism by which HUVECs perceive the microenvironment and regulate intracellular calcium signals.
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影响因子:
2.9
作者:
Spellman,MW;Leonard,CK;Basa,LJ;Gelineo,I;vanHalbeek,H
通讯作者:
vanHalbeek,H
影响因子:
2.9
作者:
K. Hsi;L. Chen;D. Hawke;L. Zieske;P. Yuan
通讯作者:
P. Yuan
DOI:
10.1016/s0021-9258(18)33746-3
发表时间:
1982-10
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
R. Cummings;S. Kornfeld
通讯作者:
R. Cummings;S. Kornfeld
影响因子:
3.5
作者:
DORLAND, L;HAVERKAMP, J;MONTREUIL, J
通讯作者:
MONTREUIL, J
影响因子:
2.9
作者:
Barr,JR;Anumula,KR;Vettese,MB;Taylor,PB;Carr,SA
通讯作者:
Carr,SA