Abstract:
:The polycystic kidney disease (PKD) 1L3-PKD2L1 channel is a candidate sour taste receptor expressed in mammalian taste receptor cells. Various acids are reported to activate PKD channels after the removal of the acid stimuli, but little information is available on the activation of these channels by acetic acid. It was difficult to analyze the PKD channel activation by acetic acid using Ca2+ imaging experiments because this acid induces a transient and nonspecific response in cultured cells. Here, we developed a novel method to evaluate PKD channel activation by acetic acid. Nonspecific responses were observed only over a short period after the application of acetic acid. In contrast, PKD channel activation evoked by acetic acid as well as citric acid was detected even at a later time point. This method revealed that PKD1L3-PKD2L1 channel activation by acetic acid was pH-dependent and occurred when the ambient pH was <3.1.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Ishii S,Misaka T,Kishi M,Kaga T,Ishimaru Y,Abe Kdoi
10.1016/j.bbrc.2009.05.069subject
Has Abstractpub_date
2009-07-31 00:00:00pages
346-50issue
3eissn
0006-291Xissn
1090-2104pii
S0006-291X(09)01003-1journal_volume
385pub_type
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