کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
914650 | 1473243 | 2009 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Cross-inhibition between native and recombinant TRPV1 and P2X3 receptors
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کلمات کلیدی
TNP-ATPnACh receptorTRPV1DMEMDRGtrkAEGTAHBSSGDNFNGFdorsal root ganglion - گانگلیون ریشه پشتی1,2-bis(2-aminophenoxy)ethane-N,N,N′,N′-tetraacetic acid - 1،2-bis (2-aminophenoxy) ethane-N، N، N '، N'-tetraacetic acidα,β-MeATP - α، β-MeATPα,β-methylene ATP - α، β-methylene ATPATP - آدنوزین تری فسفات یا ATPethylene glycol-bis(2-aminoethylether)-N,N,N′,N′-tetraacetic acid - اتیلن گلیکول بیست (2-aminoethylether) -N، N، N '، N'-tetraacetic acidHuman - انسانBAPTA - بیایپیتیایReceptor interaction - تعامل گیرندهRTK, Receptor tyrosine kinase - تیروزین کینازهای گیرنده ایDulbecco’s Minimal Essential Medium - حداقل ضروری متوسط DulbeccoHEK293 cell - سلول HEK293human embryonic kidney cells - سلول های کلیوی جنینی انسانHEK cells - سلولهای HEKnerve growth factor - فاکتور رشد عصبglial cell-derived neurotrophic factor - فاکتور نوروپاتیک مشتق شده از سلول گلیالHanks’ balanced salt solution - محلول نمک متعادل هانکسRat - موش صحراییwild-type - نوع وحشیCapsaicin - کپسایسین یا کاپسیسینP2X3 receptor - گیرنده P2X3TRPV1 receptor - گیرنده TRPV1nicotinic acetylcholine receptor - گیرنده استیلکولین نیکوتین
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب سلولی و مولکولی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Cross-inhibition between native and recombinant TRPV1 and P2X3 receptors Cross-inhibition between native and recombinant TRPV1 and P2X3 receptors](/preview/png/914650.png)
چکیده انگلیسی
Small- to medium-sized neurons in the dorsal root ganglion (DRG) convey nociceptive information to the spinal cord. The co-expression of TRPV1 receptors (sensitive to vanilloids, heat and acidic pH) with P2X3 receptors (sensitive to extracellular ATP) has been found in many DRG neurons. We investigated whether the co-activation of these two receptor classes in small-diameter cells leads to a modulation of the resulting current responses shaping the intensity of pain sensation. The whole-cell patch clamp method was used to record agonist-induced currents in cultured rat DRG neurons and in HEK293 cells transfected with the respective wild-type recombinant receptors or their mutants. Co-immunoprecipitation studies were used to demonstrate the physical association of TRPV1 and P2X3 receptors. At a negative holding potential, the P2X3 receptor agonist α,β-meATP induced less current in the presence of the TRPV1 agonist capsaicin than that in its absence. This inhibitory interaction was not changed at a positive holding potential, in a Ba2+-containing superfusion medium, or when the buffering of intrapipette Ca2+ was altered. The C-terminal truncation at Glu362 of P2X3 receptors abolished the TRPV1/P2X3 cross-talk in the HEK293 expression system. Co-immunoprecipitation studies with polyclonal antibodies generated against TRPV1 and P2X3 showed a visible signal in HEK293 cells transfected with both receptors. It is concluded that the two pain-relevant receptors TRPV1 and P2X3 interact with each other in an inhibitory manner probably by a physical association established by a motif located at the C-terminal end of the P2X3 receptor distal to Glu362.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Pain - Volume 143, Issues 1â2, May 2009, Pages 26-36
Journal: Pain - Volume 143, Issues 1â2, May 2009, Pages 26-36
نویسندگان
Doychin Stanchev, Maren Blosa, Doreen Milius, Zoltan Gerevich, Patrizia Rubini, Günther Schmalzing, Klaus Eschrich, Michael Schaefer, Kerstin Wirkner, Peter Illes,