Abstract:
:The role of membrane cholesterol as a crucial regulator in the structure and function of membrane proteins and receptors is well documented. However, there is a lack of consensus on the mechanism for such regulation. We have previously shown that the function of an important neuronal receptor, the serotonin1A receptor, is modulated by cholesterol in hippocampal membranes. With an overall objective of addressing the role of membrane physical properties in receptor function, we measured the viscosity of hippocampal membranes of varying cholesterol content using a meso-substituted fluorophore (BODIPY-C12) based on the BODIPY probe. BODIPY-C12 acts as a fluorescent molecular rotor and allows measurement of hippocampal membrane viscosity through its characteristic viscosity-sensitive fluorescence depolarization. A striking feature of our results is that specific agonist binding by the serotonin1A receptor exhibits close correlation with hippocampal membrane viscosity, implying the importance of global membrane properties in receptor function. We envision that our results are important in understanding GPCR regulation by the membrane environment, and is relevant in the context of diseases in which GPCR signaling plays a major role and are characterized by altered membrane fluidity.
journal_name
Chem Phys Lipidsjournal_title
Chemistry and physics of lipidsauthors
Pal S,Chakraborty H,Bandari S,Yahioglu G,Suhling K,Chattopadhyay Adoi
10.1016/j.chemphyslip.2016.02.004subject
Has Abstractpub_date
2016-03-01 00:00:00pages
69-75eissn
0009-3084issn
1873-2941pii
S0009-3084(16)30016-0journal_volume
196pub_type
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pub_type: 杂志文章
doi:10.1016/j.chemphyslip.2015.03.002
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更新日期:2020-08-01 00:00:00
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journal_title:Chemistry and physics of lipids
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pub_type: 杂志文章
doi:10.1016/j.chemphyslip.2018.10.002
更新日期:2018-12-01 00:00:00
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pub_type: 杂志文章
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更新日期:1979-09-01 00:00:00
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journal_title:Chemistry and physics of lipids
pub_type: 杂志文章,评审
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更新日期:2002-06-01 00:00:00
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更新日期:2001-05-01 00:00:00
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journal_title:Chemistry and physics of lipids
pub_type: 杂志文章
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更新日期:2001-06-01 00:00:00
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journal_title:Chemistry and physics of lipids
pub_type: 杂志文章
doi:10.1016/0009-3084(91)90006-w
更新日期:1991-09-01 00:00:00