Dopamine receptor, via D1-like and D2-like receptors, increases sodium excretion in kidney. We have reported positive interactions between D3 and D1 receptors in renal proximal tubule (RPT) cells. These reports, however do not preclude that there may be also interaction between D3 and D5 receptors, because of the lack of selective D1 and D5 receptor agonists or antagonists. We hypothesize that D3 receptors can regulate D5 receptors, and that D3 receptor regulation of D5 receptors in RPTs is impaired in spontaneously hypertensive rats (SHRs). It showed that a D3 receptor agonist, PD128907, by the activation of protein kinase C activity, increased the expression of D5 receptors in a concentration- and time-dependent manner in RPT cells from Wistar-Kyoto (WKY) rats. The stimulatory effect of the D3 receptor on D5 receptor expression was impaired in RPT cells from SHRs. The effect of D3 receptor on D5 receptor is functionally relevant; stimulation of D5 receptor decreases Na+–K+ adenosine triphosphatase (ATPase) activity in WKY cells. Pretreatment with D3 receptor agonist for 24 h enhances the D5 receptor expression and D5 receptor-mediated inhibitory effect on Na+–K+ ATPase activity in WKY cells, but decreases them in SHR cells. The effect of D3 receptor on D5 receptor expression and function was also confirmed in the D5 receptor-transfected HEK293 cells. It indicates that activation of D3 receptor increases D5 receptor expression and function. Altered regulation of D3 receptor on D5 receptors may have a role in the pathogenesis of hypertension.
Essential hypertension is one of the most common risk factors of cardiovascular disease in developed and developing countries, affecting about 25% of the middle-aged adult population.1, 2 Essential hypertension is heterogeneous and its expression is influenced by genetic and environmental factors.2, 3, 4, 5 The long-term regulation of blood pressure rests on renal and non-renal mechanisms, and abnormalities in the renal regulation of ion transport, intrinsic and extrinsic to the kidney, have been proposed to cause essential hypertension.4, 5, 6 Several studies have reported that an impaired renal dopaminergic system may contribute to the pathogenesis of hypertension.7, 8
Dopamine receptors expressed in mammals belong to the α group of the rhodopsin family of G protein-coupled receptors. The five mammalian dopamine receptor subtypes, identified by molecular cloning, differ in their primary structures, and have distinct affinities for dopamine receptor agonists and antagonists. The D1-like receptors, comprising D1 and D5 receptor subtypes, couple to the stimulatory G proteins Gs and activate adenylyl cyclases. The D2-like receptors, comprising D2, D3 and D4 receptor subtypes, couple to the inhibitory G proteins Gi and inhibit adenylyl cyclases and modulate ion channels.7, 8
There are increasing evidences for a direct interaction between D1-like and D2-like receptors in the kidney. In vitro studies have shown that a D2-like receptor, in concert with a D1-like receptor, synergistically decreases Na+–K+ ATPase, sodium–phosphate cotransporter and sodium–hydrogen exchanger activities in renal proximal tubule (RPT) and other cells.8, 9, 10, 11, 12 In rats, during conditions of normal sodium load, and especially with increased sodium load, D1- and D2-like receptors synergistically interact to increase sodium excretion.13, 14, 15 We have reported positive interactions between D3 and D1 receptors in RPT cells; stimulation of one receptor increases the expression and function of the other receptor. In contrast, in hypertensive states, the D3 and D1 receptor interaction is impaired.16 These reports, however do not preclude that there may be also interaction between D3 and D5 receptors. Indeed, the reported interactions between D2-like and D1-like receptors in vivo did not distinguish the effects exerted specifically by the D1 or D5 receptor, because of the lack of selective D1 and D5 receptor agonists or antagonists. Because both D1 and D5 receptors belong to the D1-like receptor family,8, 13 we presume that there is also an interaction between D3 and D5 receptors in RPT cells. In order to test the above hypotheses, we studied D3 and D5 receptor interaction in immortalized RPT cells from Wistar-Kyoto (WKY) rats and in D5 receptor-transfected HEK293 cells. To determine whether studied D3 and D5 receptor interaction is impaired in hypertension, similar studies were performed in spontaneously hypertensive rats (SHRs). These RPT cells behave similarly to freshly obtained RPT cells, at least with regard to dopamine receptors and responses to G protein stimulation.17, 18, 19, 20
Immortalized RPT cells from WKY and SHRs were cultured at 37 °C in 95% air and 5% CO2 atmosphere in Dulbecco's modified Eagle medium/F-12 culture media, as previously described.16, 17, 18, 19, 20 Those RPT cells were from Ulrich Hopfer's laboratory in Case Western Reserve School of Medicine (Cleveland, OH, USA). HEK293 cells were transfected with the human D5 receptor complementary DNA (cDNA) fused to a V5-His tag at the C-terminus or the empty vector (pcDNA6/V5-His) (36), which served as a control. The cells (80% confluence) were extracted in ice-cold lysis buffer (phosphate-buffered saline with 1% NP40, 0.5% sodium deoxycholate, 0.1% SDS, 1 mmol l−1 EDTA, 1 mmol l−1 ethylene glycol tetraacetic acid (EGTA), 1 mmol l−1 phenylmethylsulfonyl fluoride, 10 μg ml−1 aprotinin and 10 μg ml−1 leupeptin), sonicated, kept on ice for 1 h and centrifuged at 16 000 g for 30 min. The supernatants were stored at −70 °C until use for immunoblotting.
Rat RPT cells were treated with vehicle (dH2O), a D3 receptor agonist (PD128907) (Sigma, St Louis, MO, USA)21 or a D3 receptor antagonist (U99194A, Sigma)22 at the indicated concentrations and times. Immunoblotting was performed as previously reported,20, 23 except that the transblots were probed with the D5 receptor (1 : 500; Research Genetics, Huntsville, AL, USA). The amino-acid sequence of the peptide for the rabbit anti-human D5 receptor antibody corresponds to the third intracellular loop of the D5 receptor. The receptor densities were normalized by α-actin.
All immunoblot bands in one group (receptor of interest or actin) were given a value of 100%. The density of each sample was calculated as a fraction of 100%. The ordinate indicates the ratio of the density of the protein of interest as a fraction of 100% and the density of actin as a fraction of 100%.
Antisense–sense oligodeoxynucleotide (ODN) against rat D1 receptor messenger RNA (mRNA) and its control, sense ODN, were synthesized and purified with reverse-phase high-performance liquid chromatography as 21-mer phosphorothioate-modified ODNs (antisense: 5′-GGT AGA AGT GTT AGG AGC CAT-3′, sense: 5′-ATG GCT CCT AAC ACT TCT ACC-3′) from nucleotides 60 to 80 of the rat D1 receptor cDNA. The designed sequences showed no homology with other known mammalian sequences deposited in the Genbank database (GenBank accession no. M35077), as screened using the BLAST program.24
The effects of 50 nM of antisense ODN were compared with sense controls. Briefly, cells were grown in 6-well plates until 60% confluence, and 50 nM antisense or sense ODN were mixed with 6 μl of oligofectamine in Optimem medium (Invitrogen, Life Technologies, Shanghai City, China) and incubated for 24 h, then switched to growth medium and incubated for another 24 h. The cells were collected and processed for reverse transcriptase (RT)-PCR for the D1 receptor to check whether the antisense works well or not.
Na+–K+ ATPase activity assay
Na+–K+ ATPase activity was determined as the rate of inorganic phosphate released in the presence or absence of ouabain.24, 25, 26 To prepare membranes for Na+–K+ ATPase activity assay, RPT cells were cultured in 21 cm2 plastic culture dishes, washed twice with 5 ml chilled phosphate-free Modified Krebs buffer (118 mM NaCl, 4 mM KCl, 27.2 mM NaHCO3, 1.2 mM MgCl2.6H2O, 10 mM 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid and 0.25 mM CaCl2.2H2O) and centrifuged at 3000 g for 10 min. The cells were then placed on ice and lysed in 2 ml of lysis buffer (1 mM NaHCO3, 2 mM CaCl2 and 5 mM MgCl2). Cell lysates were centrifuged at 3000 g for 2 min to remove intact cells, debris and nuclei. The resulting supernatant was suspended in an equal volume of 1 M sodium iodide, and the mixture was centrifuged at 48 000 g for 25 min. The pellet (membrane fraction) was washed two times and suspended in 10 mM Tris and 1 mM EDTA (pH 7.4). Protein concentrations were determined by the Bradford assay (Bio-Rad Laboratories, Hercules, CA, USA) and adjusted to 1 mg ml−1. The membranes were stored at −70 °C until further use. To measure Na+–K+ ATPase activity, 100 μl aliquots of membrane fraction were added to a 800-μl reaction mixture (75 mM NaCl, 5 mM KCl, 5 mM MgCl2, 6 mM sodium azide, 1 mM Na4EGTA, 37.5 mM imidazole, 75 mM Tris HCl and 30 mM histidine; pH 7.4) with or without 1 mM ouabain (final volume=1 ml) and preincubated for 5 min in a water bath at 37 °C. Reactions were initiated by adding Tris ATP (4 mM) and terminated after 15 min of incubation at 37 °C by adding 50 μl of 50% trichloracetate. For determination of ouabain-insensitive ATPase activity, NaCl and KCl were omitted from the reaction mixtures containing ouabain. To quantify the amount of phosphate produced, 1 ml of coloring reagent (10% ammonium molybdate in 10 N sulfuric acid + ferrous sulfate) was added to the reaction mixture. The mixture was then combined thoroughly and centrifuged at 3000 g for 10 min. Formation of phosphomolybdate was determined spectrophotometrically at 740 nm, against a standard curve prepared from K2HPO4. Na+–K+ ATPase activity was estimated as the difference between total and ouabain-insensitive ATPase activity, and results are expressed as μmol phosphate released per mg protein per hour.
To eliminate the effect of proteases on the results, we added protease inhibitor (1 mM phenylmethylsulfonyl fluoride, 10 mg ml−1 each leupeptin and aprotinin) in all solutions in this experiment.27
A total of 2–3 μg of total RNA extracted from RPT cells was used to synthesize cDNA and served as a template for amplification of D1, D3 receptor and β-actin as an endogenous standard.28 For β-actin, the forward primer was 5′-GTGGGTATGGGTCAGAAGGA-3′ and the reverse primer was 5′-AGCGCGTAACCCTCATAGAT-3′. The amplification was performed with the following conditions: 35 cycles of denaturation at 94 °C for 2 min, annealing for 30 s at 52.5 °C and extension for 45 s at 72 °C. For D1 receptor, the forward primer was 5′-ACTCTGCCCTACTACGAATAA-3′ and the reverse primer was 5′-CTCCTGCTGTAAGGCTCAAT-3′. The amplification was performed with the following conditions: 40 cycles of denaturation at 94 °C for 2 min, annealing for 30 s at 60 °C and extension for 45 s at 72 °C. For D3 receptor, the forward primer was 5′-GGCTGCCCTTCTTCTTGAC-3′ and the reverse primer was 5′-CAGCAAGACAGGATCTTGAGG-3′. The amplification was performed with the following conditions: 40 cycles of denaturation at 94 °C for 2 min, annealing for 30 s at 60 °C and extension for 45 s at 72 °C.
For real-time quantitative RT-PCR analysis, cDNA was synthesized from 0.5 μg. of total RNA with a cDNA synthesis kit (High Capacity RNA-to-cDNA Kit; Takala, Tokyo, Japan) for quantitative RT-PCR. In the thermal cycle, 1 μl cDNA was used per 25 μl final reaction volume. PCRs were carried out with the Brilliant SYBR Green QPCR Master Mix kit (Takala) in a total volume of 25 μl. Primers were designed using DNA-Star software (DNA Star Co., Madison, WI, USA), and sequences are listed in Table 1. A BLAST search of GenBank was performed on the primer sequences to ensure specificity. β-actin served as a housekeeping/reference gene for normalization. Amplification profiles for PCR were optimized for primer sets. The amplification profile for D5 receptor and α-actin used on the BIO-RAD CFX96 (Bio-Rad Laboratories) was 94 °C for 3 min followed by 40 cycles of 94 °C per 10 s and 60 °C per 40 s. Quantitative RT-PCR experiments were repeated for three times.29
Protein kinase C (PKC) activity assay
PKC activity was measured by using a PKC kinase activity assay Kit (Stressgen, Ann Arbor, MI, USA). The lysed cells were suspended in 50 μl of the kinase assay dilution buffer and loaded on 96-well plates coated with PKC substrate peptide. The PKC assay was initiated by the addition of 10 μl of ATP (diluted 1 mg ml−1) to each well at 30 °C and assayed as per the manufacturer's instructions, measuring incorporation of phosphate into the substrate peptide at 50 min. The wells were then washed twice with antibody dilution buffer, and 40 μl of phosphospecific substrate antibodies were added to each well and incubated for 1 h. Each well was subsequently washed three times for 10 min with wash buffer and a 1 : 1000 dilution of anti-rabbit IgG horseradish peroxidase-conjugated antibody preparation in dilution buffer, and incubated for 30 min. The wells were washed three times, and 60 μl of tetramethylbenzidine substrate (Stressgen) was added and incubated in the wells for 45 min. The horseradish peroxidase reaction was quenched by addition of 20 μl of acid stop solution, and absorbance at 450 nm was measured. The reaction was found to be linear with protein concentrations between the range of 0 and 100 μg, and time periods between 15 and 90 min.30, 31
Determination of the second messenger(s) involved in the regulation of D3 on D5 receptor expression in RPT cells from WKY rats
To determine the second messenger(s) involved in the regulation by D3 of D5 receptor expression in RPT cells from WKY rats, several inhibitors or agonists were used: PKC inhibitor (PKC inhibitor 19–31, 10−6 M), protein kinase A (PKA) inhibitor (PKA inhibitor 14–22, 10−6 M), PKC activator (phorbol 12-myristate 13-acetate, 10−7 M), PKA activator (Sp-cAMP-S, 10−7 M), calcium channel blocker (nicardipine, 10−6 M) and calcium channel agonist (BAY-K8644, 10−6 M).
PKC inhibitor 19–31, phorbol 12-myristate 13-acetate, Sp-cAMP-S, nicardipine and BAY-K8644 were purchased from Sigma; PKA inhibitor 14–22 was purchased from Calbiochem (Darmstadt, Germany).
The data are expressed as mean±s.e.m. Comparison within groups was made by repeated measures analysis of variance with Duncan's test (or paired t-test when only two groups were compared); comparison among groups was made by factorial analysis of variance with Duncan's test. A value of P<0.05 was considered significant.
D3 receptors increase D5 receptor expression in RPT cells from WKY rats, but decrease it in SHRs
A D3 receptor agonist, PD128907, increased D5 receptor expression in a concentration- and time-dependent manner in WKY RPT cells. The stimulatory effect was evident at 10−8 M, noted as early as 8 h, and maintained for at least 30 h (Figures 1a and b).
The specificity of PD128907 as a D3 receptor agonist was determined using the D3 receptor antagonist, U99194A, in WKY RPT cells. Consistent with the results shown in Figures 1a and b, PD128907 (10−7 M per 24 h) increased D5 receptor expression. U99194A (10−6 M), by itself, had no effect on D5 receptor expression, but reversed the stimulatory effect of PD128907 on D5 receptor expression (Figure 1c).
Opposite to the stimulatory effect of PD128907 on D5 receptor expression in WKY cells, stimulation of D3 receptor inhibited the D5 receptor expression in SHR cells, which was also in a concentration- and time-dependent manner (Figures 2a and b), was also blocked by U99194A (Figure 2c).
To investigate the mechanisms of D3 receptor upregulation of D5 receptor expression in WKY cells, we checked the D5 receptor protein degradation and mRNA levels after stimulation with D3 receptor agonist. To study potential posttranscriptional mechanisms, we examined protein expression in the presence of 20 μg ml−1 cycloheximide to inhibit de novo protein synthesis.32 At the indicated time, steady-state levels of D5 receptor were determined by immunoblotting. In vehicle-treated WKY cells, D5 receptor levels were rapidly decreased during the time course of 4 h. PD128907 treatment prevented cellular D5 receptor protein depletion (Figure 3a). However, in SHR cells, D3 receptor also inhibited the degradation of D5 receptor, there were no significant difference between WKY and SHR cells (Figure 3b), indicating that the posttranscriptional mechanism was not involved into the differential regulation of D3 receptor on D5 receptor in WKY and SHR cells. Our further study showed that stimulation of D3 receptor with PD128907 (10−7 M per 24 h) increases D5 receptor mRNA expression (Figure 4).
PKC is involved into the regulation of D3 receptor on D5 receptor expression in WKY RPT cells
To investigate a mechanism for the D3 receptor-induced upregulation of D5 receptor, the RPT cells from WKY were treated with different agonists or antagonists. Treatment with the PKC inhibitor 19–31 (10−6 M), which by itself had no effect on D5 receptor expression, blocked the stimulatory effect of D3 receptor on D5 receptor expression in RPT cells from WKY rats (Figures 5), indicating that PKC was involved in the signal transduction pathway activated by D3 receptor. We also evaluated the involvement of other key cell signaling proteins with the use of a PKA inhibitor (PKA inhibitor 14–22, 10−6 M), PKC activator (phorbol 12-myristate 13-acetate, 10−7 M), PKA activator (Sp-cAMP-S, 10−7 M), calcium channel blocker (nicardipine, 10−6 M) and calcium channel agonist (BAY-K8644, 10−6 M). None of these reagents was able to block the stimulatory effect of D3 receptor on D5 receptor expression (data not shown).
Our further experiment also found that, consistent with the results in Figure 5, stimulation of RPT cells with D3 receptor agonist, PD128907 (10−7 M per 15 min), increased PKC activity in WKY cells, which was partially blocked by D3 receptor antagonist, U99194A (10−6 M per 15 min) (Figure 6).
Pretreatment with PD128907 increases the D5 receptor-mediated inhibitory effect on Na+–K+ ATPase activity in WKY RPT cells, not in SHR cells
To investigate the physiological significance of D3/D5 receptor interaction, we used antisense oligonucleotides to reduce the expression of either D1 receptor in both WKY and SHR cells. RPT cells were incubated with D1 receptor antisense or sense propyne/phosphorothioate oligonucleotides for 48 h, and D1 receptor was quantified by RT-PCR. D1 receptor expression was decreased by the D1 receptor antisense but not by sense oligonucleotides in WKY and SHR cells; the inhibition of D1 receptor antisense on D1 receptor mRNA expression had no significant difference (Figures 7a and b).
To investigate the physiological significance of D3/D5 receptor interaction, the effect of D3 and/or D5 receptors on Na+–K+ ATPase activity was determined in WKY and SHR cells after inhibition of D1 receptor expression by D1 receptor antisense, as observed in Figure 7a. Stimulation of D5 receptors by fenoldopam (10−7 M per 15 min) decreased Na+–K+ ATPase activity in WKY cells, which could be blocked by the D1-like receptor antagonist, SCH23390 (10−7 M per 15 min) (Figures 8a and b). Pretreatment with PD128907 (10−7 M) for 24 h augmented the inhibitory effect of fenoldopam (10−7 M per 15 min) on Na+–K+ ATPase activity in WKY cells, but decreased it in SHR cells (Figure 8c), which was consistent with the results in Figures 1 and 2, because stimulation of D3 receptor increased D5 receptor expression in WKY cells, but decreased in SHR cells.
D3 receptors increase D5 receptor expression and function in D5 receptor-transfected HEK293 cells
Before transfection, we determine the D3 and D1 receptor expressions in HEK293 cells, we found specific D3 receptor (∼45 kDa) bands in D5-HEK293 cells and WKY cells (as positive control) (Figure 9a); the 45-kDa band was no longer visible when the antibodies were pre-adsorbed with the immunizing peptide. The D3 receptor mRNA, not D1 receptor mRNA, was also found in HEK293 cells, determined by RT-PCR (Figures 9b and c).
Consistent with the results in WKY cells, a D3 receptor agonist, PD128907 (10−7 M per 24 h), increased D5 receptor expression in D5 receptor-transfected HEK293 cells (control=0.8±0.06, PD128907=1.5±0.1 DU; n=4). Stimulation of D5 receptors by fenoldopam (10−7 M per 15 min) decreased Na+–K+ ATPase activity, which could be blocked by the D1-like receptor antagonist, SCH23390 (10−7 M per 15 min) (control=0.41±0.02, fenoldopam=0.31±0.016; SCH23390=0.42±0.032, fenoldopam+SCH23390=0.41±0.025 μmol phosphate released per mg protein per hour; n=6, P<0.05). Pretreatment with PD128907 (10−7 M) for 24 h augmented the inhibitory effect of fenoldopam (10−7 M per 15 min) on Na+–K+ ATPase activity in D5 receptor-transfected HEK293 cells (Figure 10). The cells prereated with PD128907 for 24 h were washed three times (15 min per wash) with serum-free culture medium to remove all the added PD128907, kept in serum-free culture medium for 2 h and then treated with vehicle or fenoldopam for 15 min.
D1-like receptors induce diuresis and natriuresis in WKY rats.7, 8 Owing to the lack of selective D1 and D5 receptor agonists or antagonists,33 the relative contribution of D1 and D5 receptors to the natriuretic effect caused by D1-like receptor stimulation is not known. We have presumed that both D1 and D5 receptors are involved because both receptors increase cyclic adenosine monophosohate production and cyclic adenosine monophosohate mediates the D1-like receptor-mediated inhibition of ion transport.33
The D5 receptor has generated significant interest because of its relatively high affinity for dopamine compared with the other dopamine receptors.34 Moreover, the D5 receptor can be activated in the absence or presence of low concentrations of endogenous agonist. In D5 receptor null (D5−/−) mice, a high salt diet further increases blood pressure, suggesting that the renal D5 receptor has an important role in the control of blood pressure by regulating renal sodium chloride transport.28, 35 In the present study, we found that activation of D5 receptor inhibits Na+–K+ ATPase activity in D5 receptor-transfected HEK293 cells.
As aforementioned, there is a synergistic effect between the D1-like and the D2-like receptors in the regulation of renal function. In normotensive rats, stimulation of renal D1- and D2-like receptors produces natriuresis that is greater than that observed with D1-like receptors alone.13, 14 In concert with a D1-like receptor agonist, a D2-like receptor agonist acts synergistically to inhibit Na+–K+ ATPase and sodium–hydrogen exchanger activity in RPT cells and sodium–phosphate cotransporter activity in opossum kidney cells.8, 9, 10, 11, 12 The underlying mechanisms were not completely understood. As one of major signals of dopamine receptor, stimulation of D1-like receptor increases whereas D2-like receptor decreases cyclic adenosine monophosohate production, which is impossible to explain the synergistical interaction between those two dopamine receptor sub-families. As the major D2-like receptor subtype in RPT cells, D3 receptor has direct or indirect with others. Our previous study found an interaction between D1 and D3 receptors in RPT cells from WKY rats; activation of either receptor increases each other's expression16 whereas in the hypertensive states the stimulatory effect of D1 receptor on D3 receptor is lost. Besides of the interaction between D3 and D1 receptor, D3 receptor also could regulate the other D1-like receptor (D5). In the present study, we found that activation of the D3 receptor increases D5 receptor expression in WKY cells. In contrast, in SHR cells not only is the stimulatory effect of D3 receptor on D5 receptor lost but also an inhibitory effect is actually observed. The effect of D3 receptor on D5 receptor is functionally relevant; pretreatment with D3 receptor for 24 h enhances the inhibitory effect of fenoldopam on Na+–K+ ATPase activity in WKY cells, but decreases it in SHR cells. It is possible that a desensitized D3 receptor is partly responsible for the lower basal levels of D5 receptors in SHR cells than in WKY cells; the D3 receptor is constitutively active.36 The lower expression of D5 receptors in SHR RPT cells,23 and the aberrant interaction between D3 and D5 receptors may participate in the abnormal renal sodium handling in essential hypertension.
In summary, we have demonstrated that D3 receptors regulate the expression and function of D5 receptors in immortalized rat RPT cells. Altered regulation of D3 receptor on D5 receptors may have a role in the pathogenesis of hypertension.
Hajjar I, Kotchen TA . Trends in prevalence, awareness, treatment, and control of hypertension in the United States, 1988-2000. JAMA 2003; 290: 199–206.
Messerli FH, Williams B, Ritz E . Essential hypertension. Lancet 2007; 370: 591–603.
Cowley Jr AW . The genetic dissection of essential hypertension. Nat Rev Genet 2006; 7: 829–840.
Khalil RA . Dietary salt and hypertension: new molecular targets add more spice. Am J Physiol Regul Integr Comp Physiol 2006; 290: R509–R513.
Osborn JW, Fink GD, Sved AF, Toney GM, Raizada MK . Circulating angiotensin II and dietary salt: converging signals for neurogenic hypertension. Curr Hypertens Rep 2007; 9: 228–235.
Coffman TM, Crowley SD . Kidney in hypertension: Guyton redux. Hypertension 2008; 51: 811–816.
Hussain T, Lokhandwala MF . Renal dopamine receptors and hypertension. Exp Biol Med (Maywood) 2003; 228: 134–142.
Zeng C, Armando I, Luo Y, Eisner GM, Felder RA, Jose PA . Dysregulation of dopamine-dependent mechanisms as a determinant of hypertension: studies in dopamine receptor knockout mice. Am J Physiol Heart Circ Physiol 2008; 294: H551–H569.
Bacic D, Capuano P, Baum M, Zhang J, Stange G, Biber J, Kaissling B, Moe OW, Wagner CA, Murer H . Activation of dopamine D1-like receptors induces acute internalization of the renal Na+/phosphate cotransporter NaPi-IIa in mouse kidney and OK cells. Am J Physiol Renal Physiol 2005; 288: F740–F747.
Bertorello A, Aperia A . Inhibition of proximal tubule Na+-K+-ATPase activity requires simultaneous activation of DA1 and DA2 receptors. Am J Physiol 1990; 259: F924–F928.
Hu MC, Fan L, Crowder LA, Karim-Jimenez Z, Murer H, Moe OW . Dopamine acutely stimulates Na+/H+ exchanger (NHE3) endocytosis via clathrin-coated vesicles: dependence on protein kinase A-mediated NHE3 phosphorylation. J Biol Chem 2001; 276: 26906–26915.
Satoh T, Cohen HT, Katz AI . Intracellular signaling in the regulation of renal Na-K-ATPase. II Role of eicosanoids. J Clin Invest 1993; 91: 409–415.
Eklöf AC . The natriuretic response to a dopamine DA1 agonist requires endogenous activation of dopamine DA2 receptors. Acta Physiol Scand 1997; 160: 311–314.
Jose PA, Asico LD, Eisner GM, Pocchiari F, Semeraro C, Felder RA . Effects of costimulation of dopamine D1- and D2-like receptors on renal function. Am J Physiol 1998; 275: R986–R994.
Ladines CA, Zeng C, Asico LD, Sun X, Pocchiari F, Semeraro C, Pisegna J, Wank S, Yamaguchi I, Eisner GM, Jose PA . Impaired renal D1-like and D2-like dopamine receptor interaction in the spontaneously hypertensive rat. Am J Physiol Regul Integr Comp Physiol 2001; 28: R1071–R1078.
Zeng C, Wang Z, Yu P, Zheng S, Wu L, Asico LD, Hopfer U, Eisner GM, Felder RA, Jose PA . D3 Dopamine receptor directly interacts with D1 dopamine receptor in immortalized renal proximal tubule cells. Hypertension 2006; 47: 573–579.
Bek MJ, Zheng S, Xu J, Yamaguchi I, Asico LD, Sun XG, Jose PA . Differential expression of adenylyl cyclases in the rat nephron. Kidney Int 2001; 60: 890–899.
Parenti A, Cui XL, Hopfer U, Ziche M, Douglas JG . Activation of MAPKs in proximal tubule cells from spontaneously hypertensive and control Wistar-Kyoto rats. Hypertension 2000; 35: 1160–1166.
Xu J, Li XX, Albrecht FE, Hopfer U, Carey RM, Jose PA . D1 receptor, Gsα, and Na+/H+ exchanger interactions in the kidney in hypertension. Hypertension 2000; 36: 395–399.
Zheng S, Yu P, Zeng C, Wang Z, Yang Z, Andrews PM, Felder RA, Jose PA . Gα12- and Gα13-protein subunit linkage of D5 dopamine receptors in the nephron. Hypertension 2003; 41: 604–610.
Levant B . The D3 dopamine receptor: neurobiology and potential clinical relevance. Pharmacol Rev 1997; 49: 231–252.
Kling-Petersen T, Ljung E, Svensson K . Effects on locomotor activity after local application of D3 preferring compounds in discrete areas of the rat brain. J Neural Transm 1995; 102: 209–220.
Zeng C, Yang Z, Wang Z, Jones J, Wang X, Altea J, Mangrum AJ, Hopfer U, Sibley DR, Eisner GM, Felder RA, Jose PA . Interaction of AT1 and D5 dopamine receptors in renal proximal tubule cells. Hypertension 2005; 45: 804–810.
Wang ZQ, Felder RA, Carey RM . Selective inhibition of the renal dopamine subtype D1A receptor induces antinatriuresis in conscious rats. Hypertension 1999; 33: 504–510.
Shah S, Hussain T . Enhanced angiotensin II-induced activation of Na+, K+-ATPase in the proximal tubules of obese Zucker rats. Clin Exp Hypertens 2006; 28: 29–40.
Kotlo K, Shukla S, Tawar U, Skidgel RA, Danziger RS . Aminopeptidase N reduces basolateral Na+/K+ ATPase in proximal tubule cells. Am J Physiol Renal Physiol 2007; 293: F1047–F1053.
Silva E, Gomes P, Soares-da-Silva P . Overexpression of Na+/K+-ATPase parallels the increase in sodium transport and potassium recycling in an in vitro model of proximal tubule cellular ageing. J Membr Biol 2006; 212: 163–175.
Hollon TR, Bek MJ, Lachowicz JE, Ariano MA, Mezey E, Ramachandran R, Wersinger SR, Soares-da-Silva P, Liu ZF, Grinberg A, Drago J, Young III WS, Westphal H, Jose PA, Sibley DR . Mice lacking D5 dopamine receptors have increased sympathetic tone and are hypertensive. J Neurosci 2002; 22: 10801–10810.
Hakki SS, Bozkurt SB, Ozcopur B, Purali N, Belli S . Periodontal ligament fibroblast response to root perforations restored with different materials - a laboratory study. Int Endod J 2011 Oct 19. [Epub ahead of print].
Chen J, Liu Y, Soh JW, Aguilera G . Antiapoptotic effects of vasopressin in the neuronal cell line H32 involve protein kinase C alpha and beta. J Neurochem 2009; 110: 1310–1320.
Mashukova A, Oriolo AS, Wald FA, Casanova ML, Kröger C, Magin TM, Omary MB, Salas PJ . Rescue of atypical protein kinase C in epithelia by the cytoskeleton and Hsp70 family chaperones. J Cell Sci 2009; 122: 2491–2503.
Clasen R, Schupp M, Foryst-Ludwig A, Sprang C, Clemenz M, Krikov M, Thöne-Reineke C, Unger T, Kintscher U . PPARg-activating angiotensin type-1 receptor blockers induce adiponectin. Hypertension 2005; 46: 137–143.
Zeng C, Yang Z, Asico LD, Jose PA . Regulation of blood pressure by D5 dopamine receptors. Cardiovasc Hematol Agents Med Chem 2007; 5: 241–248.
Sunahara RK, Guan HC, O'Dowd BF, Seeman P, Laurier LG, Ng G, George SR, Torchia J, Van Tol HH, Niznik HB . Cloning of the gene for a human dopamine D5 receptor with higher affinity for dopamine than D1 . Nature 1991; 350: 614–619.
Yang Z, Asico LD, Yu P, Wang Z, Jones JE, Escano CS, Wang X, Quinn MT, Sibley DR, Romero GG, Felder RA, Jose PA . D5 dopamine receptor regulation of reactive oxygen species production, NADPH oxidase, and blood pressure. Am J Physiol Regul Integr Comp Physiol 2006; 290: R96–R104.
Strange PG . Agonism and inverse agonism at dopamine D2-like receptors. Clin Exp Pharmacol Physiol Suppl 1999; 26: S3–S9.
These studies were partially supported by Grants from the National Natural Science Foundation of China (30925018, 31130029, 81070559, 81100190), the National Basic Research Program of China (973 Program, 2008CB517308, 2012CB517801) and Natural Science Foundation Project of CQ CSTC (CSTC, 2009BA5044).
The authors declare no conflict of interest.
About this article
Cite this article
Huang, H., Ren, H., Chen, C. et al. D3 dopamine receptor regulation of D5 receptor expression and function in renal proximal tubule cells. Hypertens Res 35, 639–647 (2012). https://doi.org/10.1038/hr.2012.11
- rats, normotensive
- rats, spontaneously hypertensive
- receptor, dopamine
The FASEB Journal (2020)
Antioxidants & Redox Signaling (2020)
Curcumin prevents strokes in stroke-prone spontaneously hypertensive rats by improving vascular endothelial function
BMC Cardiovascular Disorders (2018)
Effect of D3 dopamine receptor on dopamine D4 receptor expression and function in renal proximal tubule cells from Wistar–Kyoto rats and spontaneously hypertensive rats
Journal of Hypertension (2016)
American Journal of Physiology-Renal Physiology (2014)