- Open Access
Effect of β2-adrenergic receptor gene (ADRB2) 3′ untranslated region polymorphisms on inhaled corticosteroid/long-acting β2-adrenergic agonist response
Respiratory Research volume 13, Article number: 37 (2012)
Evidence suggests that variation in the length of the poly-C repeat in the 3′ untranslated region (3′UTR) of the β2-adrenergic receptor gene (ADRB2) may contribute to interindividual variation in β-agonist response. However, methodology in previous studies limited the assessment of the effect of sequence variation in the context of poly-C repeat length. The objectives of this study were to design a novel genotyping method to fully characterize sequence variation in the ADRB2 3′UTR poly-C repeat in asthma patients treated with inhaled corticosteroid and long-acting β2-adrenergic agonist (ICS/LABA) combination therapy, and to analyze the effect of the poly-C repeat polymorphism on clinical response.
In 2,250 asthma patients randomized to treatment with budesonide/formoterol or fluticasone/salmeterol in a six-month study (AstraZeneca study code: SD-039-0735), sequence diversity in the ADRB2 poly-C repeat region was determined using a novel sequencing-based genotyping method. The relationship between the poly-C repeat polymorphism and the incidence of severe asthma exacerbations, and changes in pulmonary function and asthma symptoms from baseline to the average during the treatment period, were analyzed.
Poly-C repeat genotypes were assigned in 97% (2,192/2,250) of patients. Of the 13 different poly-C repeat alleles identified, six alleles occurred at a frequency of >5% in one or more population in this study. The repeat length of these six common alleles ranged from 10 to 14 nucleotides. Twelve poly-C repeat genotypes were observed at a frequency of >1%. No evidence of an association between poly-C repeat genotype and the incidence of severe asthma exacerbations was observed. Patients’ pulmonary function measurements improved and asthma symptoms declined when treated with ICS/LABA combination therapy regardless of poly-C repeat genotype.
The extensive sequence diversity present in the poly-C repeat region of the ADRB2 3′UTR did not predict therapeutic response to ICS/LABA therapy.
Results from studies in patients with asthma have shown considerable variation in the therapeutic response to β2-adrenergic agonists [1–3], which may be associated with genetic variation in the β2-adrenergic receptor gene (ADRB2) [4–7]. In some studies, a difference in clinical response to short-acting β2-adrenergic agonist (SABA) and long-acting β2-adrenergic agonist (LABA) therapies has been observed in asthma patients with specific ADRB2 genotypes [8–11]. Recent pharmacogenetic analyses have shown no effect of ADRB2 variation on clinical response to inhaled corticosteroid (ICS)/LABA combination therapy [12–15]. However, these studies did not explore the effect of diversity in the poly-C repeat on the 3′ untranslated region (3′UTR) of ADRB2.
It has been proposed that genetic polymorphisms in the 3′UTR of ADRB2 may contribute to variation in response to β2-adrenergic agonist therapy . A repeat length polymorphism has been identified in a ‘C’ nucleotide-rich region 23 bp downstream from the translation stop codon of ADRB2 in the poly-C repeat region . Results from a case-control study in a multiethnic population showed a significant association between the single-nucleotide polymorphism (SNP) rs1042714 (encoding the Gln27Glu variation) and an ADRB2 haplotype extending across the poly-C repeat region, with the asthma phenotype in African Americans . This study suggested that the length of the poly-C repeat may affect pulmonary function and thus contribute to interindividual variation in β-agonist response. Findings from another study showed that patients with the Arg16Arg polymorphism who have tracts of 11C’s in the poly-C region have reduced ADRB2 expression and increased agonist-promoted downregulation compared with those with other poly-C lengths . The authors proposed that these factors may result in decreased bronchodilator response and tachyphylaxis to inhaled β2-agonists .
The fragment-size−based genotyping method used by Hawkins and coworkers to characterize the 3′UTR poly-C repeat polymorphism  does not allow substitutions that interrupt the poly-C repeat to be characterized in the context of poly-C repeat length. Therefore, the objective of the present study was to design a novel and robust genotyping method to fully characterize sequence variation in the ADRB2 3′UTR poly-C repeat region in 2,250 patients previously treated with ICS/LABA therapy, and to analyze the effect of the poly-C repeat polymorphism on clinical response to ICS/LABA combination therapy. It was hypothesized that sequence variation in the 3′UTR region of the ADRB2 gene may affect response to therapy and the incidence of exacerbations. In this report, the poly-C allele is defined as all variation in the poly-C repeat region (+1266 to +1278), including length of poly-C repeat and any additional substitutions. The poly-C genotype is the combination of two alleles in any one individual.
Study population and clinical measurements
Patients included in the present study were participants in a previously described clinical study (SD-039-0735)  and pharmacogenetic analysis . Briefly, the study population included 2,250 patients with asthma who were randomized to either budesonide/formoterol dry powder inhaler (DPI) 160/4.5 μg × 1 inhalation twice daily, budesonide/formoterol DPI 320/9 μg × 1 inhalation twice daily, or fluticasone/salmeterol DPI 125/25 μg × 2 inhalations (250/50 μg) twice daily for six months [13, 18]. The study protocol was approved by independent ethics committees for the 235 sites within 16 countries participating in the study, and all patients included in these analyses provided informed consent for genetic analysis. Outcomes analyzed in this study included the number of severe asthma exacerbations (defined as deterioration in asthma leading to hospitalization, emergency department treatment, or oral glucocorticosteroid treatment lasting three or more days) and changes in pulmonary function measurements (forced expiratory volume in one second [FEV1 and morning peak expiratory flow [PEF], total symptom scores, use of rescue medication, and nighttime awakenings) from baseline to the average during the treatment period. Race was self-reported; 73% of patients were white of European descent (n = 1,614), 7% were Asian (n = 156), 1% were black (n = 21), and 19% were of mixed or other race (n = 434).
A novel sequence-based genotyping approach was used in this study to investigate and genotype sequence diversity in the poly-C region of ADRB2 because the 3′UTR was refractory to standard polymerase chain reaction (PCR) sequencing. This method interrupted poly-C repeats and disrupted secondary structure with mismatched PCR primer in which the ‘C’ nucleotide was changed to ‘T’ (Figure 1). Additional details are provided in the Additional file 1.
As in previous analyses , patients of various races on various ICS/LABA combination treatments were combined in the present exploratory analysis to assess the association of the large number of poly-C genotypes with ICS/LABA treatment outcomes in a large patient population. Demographics and baseline patient characteristics during run-in were summarized by poly-C repeat genotype group for all groups present at a frequency of >1%. The incidence of severe asthma exacerbations was summarized by poly-C genotype group. The effect of poly-C repeat genotype on time to first exacerbation was analyzed using a Cox proportional hazards model, and the proportion of patients with exacerbations in each poly-C genotype group was compared using an ordinal logistic regression model. Changes in FEV1, morning PEF, total daily asthma symptom scores, total daily rescue medication use, and nighttime awakenings, from run-in to the average over the treatment period, were compared using analysis of variance (ANOVA) models. ANOVA models included poly-C genotypes (frequency >1%), treatment, country, and baseline value. In a previous pharmacogenetic analysis, there was no effect of the ADRB2 Gly16Arg polymorphism on pulmonary function ; however, because of interest in the effect of the Gly16Arg SNP, changes from baseline in FEV1 and morning PEF were assessed using additional ANOVA models, including Gly16Arg genotype as a covariate in whites of European descent and Asian populations.
Allelic variation in the poly-C repeat region (from positions +1266 to +1278 bp relative to the ATG start codon in ADRB2 reference sequence M15169.1) was determined through sequencing of PCR products generated using a mismatched PCR primer. The mismatched primer, which hybridizes to sequences between position +1244 and +1271 (Figure 1), introduced a ‘T’ nucleotide at position +1269. To ensure polymorphisms underlying the mismatched PCR primer did not affect poly-C genotype determination, the region was re-sequenced in all patients using a PCR product generated using an upstream forward primer (see online repository). A rare polymorphism has been previously identified within the mismatched primer binding site at +1268 (rs28763957) . In the patients in this study, this SNP was found to be triallelic; whites of European descent C1268C, n = 1617; C1268G, n = 4; C1268A, n = 5; and undetermined, n = 8 (allele frequency in whites of European descent 1268G = 0.12%, 1268A = 0.15%). In addition, 11 patients of mixed race were heterozygous C1268G. A novel SNP at C1269A was identified in one mixed-race patient. A novel C1271T polymorphism was identified; one black patient and five patients of mixed race were found to be heterozygous C1271T, and one black patient was a rare homozygote T1271T. One mixed-race patient was heterozygous for both the C1268G and C1271T polymorphisms.
In total, 27 patients (1.2%) were identified with polymorphisms within the mismatched primer region and thus were excluded from the determination of the poly-C genotype. In addition, poly-C genotype was undetermined in a further 31 (1.4%) patients due to failure to sequence the mismatched PCR product. Therefore, 97% of patients (2192 of 2250) were assigned poly-C genotypes.
Extensive diversity in the poly-C repeat region was found; 13 poly-C alleles were identified (Figure 1). Clear differences in the poly-C allele frequencies were observed between the whites of European descent and Asian and black populations in this study. Six of the poly-C alleles were present at a frequency of >5% in one or more population groups (alleles 10a, 11a, 12a, 13b, 13c, and 14b) (Table 1). These common poly-C alleles included repeats of the ‘C’ nucleotide between 10 and 14 bases. Poly-C alleles 13b and 14b have a ‘G’ nucleotide within the poly-C repeat region at position +1275 (rs1042721). Poly-C allele 11a was the most common allele in whites of European descent (36%) but was relatively rare in Asians (2%). In the Asian population, poly-C allele 13b was the most frequent (41%). Poly-C allele 12a was relatively common in the whites of European descent (24%) and Asian (31%) populations. The frequency of alleles 10a and 14b was greater in the Asian population (13% and 11%, respectively) than in whites of European descent (4% and 6%, respectively). There were 12 poly-C genotypes that were observed at a frequency of >1% in this study; 95% of whites of European descent and 88% of Asian patients had one of these genotypes (Table 2).
In addition to the substitutions note in the poly-C repeat region, an additional novel low-frequency indel was found immediately 3΄ of the poly-C tract at position +1280 (Figure 1). An insertion of one ‘A’ nucleotide was found on the background of allele 10a (seen four times: one white of European descent, one black, and two mixed-race individuals), and the insertion of two ‘A’ nucleotides was found on the background of alleles 11a (seen 10 times: three whites of European descent and seven mixed-race individuals) and 12a (seen once in a mixed-race individual). Because this is a rare indel (allele frequency <1%; DNA sequence data on file at AstraZeneca LP) that did not directly affect the poly-C allele as defined in this paper, no further analysis was carried out.
Association of 3΄UTR poly-C repeat polymorphism with clinical response
The various poly-C genotype groups had similar pulmonary function measurements and asthma symptoms at baseline and during the run-in period (Table 2). The effect of the poly-C genotype on clinical response was explored. The results are presented in order of increasing total repeat length (the sum of an individual’s two alleles).
The proportion of patients in each poly-C genotype group who experienced a severe asthma exacerbation was between 5% and 19% (Table 3). There was variability in the incidence and rate of exacerbations across the genotype groups. Both the proportion of patients experiencing a severe asthma exacerbation and the time to first exacerbation were not statistically significant across poly-C genotype groups. Due to the overall sample sizes and the influence of a small number of patients with multiple exacerbations in some of the genotype groups, there was no clear evidence that the incidence or rate of exacerbations occurred more frequently in any particular genotype group, or with one or two copies of any particular allele.
Patients in all poly-C genotype groups showed an improvement in both morning PEF and FEV1 after treatment (Figure 2). There is no evidence that poly-C repeat genotype affects the change from baseline to the average during the treatment period in morning PEF and FEV1. Similarly, patients in all poly-C genotype groups experienced a decrease in asthma symptom score, rescue medication use, and nighttime awakenings due to asthma after treatment, and there is no evidence that poly-C repeat genotype affects changes in asthma symptoms with therapy. In addition, there was no indication of any trend between genotypes of increasing allele length and changes in pulmonary function response or asthma symptoms (Figure 2; genotypes shown in order of increasing total allele length). Inclusion of the ADRB2 Gly16Arg as a covariate was not significant and did not influence the effect of the poly-C repeat on pulmonary function outcomes (whites of European descent, morning PEF: p = 0.998, FEV1: p = 0.7399; Asians, morning PEF: p = 0.4933, FEV1: p = 0.3198).
Due to the small number of serious adverse events, discontinuations due to adverse events , and the complexity of the poly-C repeat region variation, it was not meaningful to explore the relationship between poly-C genotype and safety outcomes.
The purpose of this study was to characterize the sequence diversity in the ADRB2 poly-C repeat region, because this diversity may have an impact on response to ICS/LABA combination therapy through changes in the regulation and expression of the β2-adrenergic receptor. The results of this study did not show an effect of ADRB2 3′UTR poly-C repeat polymorphism on the effectiveness of LABA given in combination with ICS to patients with asthma. There was no indication that a particular poly-C genotype was associated with a therapeutic outcome different from other genotypes. All genotypes had comparable improvements in pulmonary function and frequency of exacerbations at the end of the treatment period.
The 3΄UTR of ADRB2 contains regions that may regulate gene expression and translation [20–22]. Variation in this poly-C region may influence gene regulation because of its proximity to mRNA regulatory motifs, including an AU-rich element . Micro-RNA−mediated silencing of gene expression involves the base pairing of micro-RNAs with the 3′UTRs of their target mRNAs . Therefore, it is possible that variation in the length of the poly-C repeat and interruptions in the poly-C repeat may have functional consequences if this 3′UTR region is a recognition site for poly-C−binding proteins that have a role in mRNA stabilization, translational activation, and translational silencing .
The poly-C sequence context of the triallelic SNP at +1275 (rs1042721) and other SNPs within the poly-C region (Figure 1) cannot be determined with the fragment-length−based genotyping method used by Hawkins and coworkers . In this study, a novel sequencing-based genotyping method was developed to accurately genotype the alleles present in the poly-C repeat region of ADRB2. The method involved the use of a mismatched PCR primer, where a ‘C’ nucleotide was changed to a ‘T’ nucleotide to interrupt the poly-C repeat and therefore disrupt the secondary structure of the product. The ‘T’ nucleotide also acts as a ‘marker’ to help determine the length of the repeat from sequence data and aids genotyping of heterozygous sequences where the differing poly-C repeat lengths cause frame shifts in the DNA sequence data. Further characterization of the sequence diversity in the ADRB2 3΄UTR was achieved by sequencing to identify SNPs within, and in close proximity to, the poly-C repeat, including substitutions that interrupt the poly-C tract. Four novel SNPs were identified (at positions +1269, +1271, +1272, and +1276) in addition to variation in the overall poly-C repeat length from 9 to 16 nucleotides. This extends the known diversity in this region beyond that previously reported.
The poly-C repeat was characterized in 2,192 patients in this study. A total of 13 different alleles were identified and confirmed by cloning. The prevalence of the poly-C alleles differed between the population groups in this study. Resequencing identified previously uncharacterized substitution polymorphisms within the poly-C repeat region. Of the six common alleles (>5%) in this region, alleles 10a, 11a, and 12a (10-, 11- and 12-mers, respectively) each have a ‘C’ at position +1275. Alleles 13b and 14b (13- and 14-mers, respectively) each have a ‘G’ at position +1275, whilst allele 13C has an ‘A’ at position +1275. Therefore, either the length of the poly-C repeat, the substitution polymorphisms, or both, could represent the functionally important variation.
An in vitro approach showed an effect of the poly-C region on mRNA stability and steady-state cell surface expression of β2-adrenergic receptor . These observations used constructs with uninterrupted tracts of the ‘C’ nucleotide. Resequencing data in the present study found that the longer poly-C repeat alleles (13b, 14b) were commonly interrupted by the presence of a ‘G’ nucleotide at +1275. The in vitro study only investigated the functional effect of poly-C repeat alleles of 11, 12, and 13 Cs in length . Our data show that alleles with 10 to 14 nucleotides are among the most common alleles across whites of European descent and Asian populations.
Hawkins et al. reported no association between ADRB2 haplotypes covering the whole ADRB2 gene and pulmonary function in white patients with asthma . However, a significant haplotype association was observed for African American patients with asthma compared with controls for FEV1/forced vital capacity (FVC) and percentage-predicted FEV1. Haplotypes 2D and 4D (both 13-mers at the poly-C repeat) were significantly associated with FEV1/FVC and percentage-predicted FEV1. Haplotypes 4C and 4D (12-mer and 13-mer at the poly-C repeat, respectively) were significantly associated with percentage-predicted FVC but with opposite Hap scores . Since haplotypes 4C and 4D differ only in the length of the poly-C repeat region, the authors suggested that different lengths of the poly-C region might influence pulmonary function in African Americans .
In this study, there was no evidence for any clear difference in baseline pulmonary function measurements in any particular genotype group in the populations studied overall (Table 2), nor within the whites of European descent or Asian populations (data not presented). In this study, the size of the black population (n = 21) did not permit sub-group analysis in the black patients, so our conclusions cannot be compared directly to Hawkins’ observations.
In the present study, comprehensive analysis of the ADRB2 poly-C repeat has revealed novel uncharacterized sequence variation. Association between the poly-C repeat genotypes and the clinical difference in response to ICS/LABA treatment was evaluated. The poly-C genotype groups had similar changes in pulmonary function after treatment, and there was no evidence of an association between poly-C genotype and incidence of severe asthma exacerbations. All poly-C genotype groups showed improvement in pulmonary function measurements after treatment with a combination ICS/LABA. A previous analysis of ADRB2 haplotypes inclusive of the promoter, coding, and 3′UTR regions showed differences in ADRB2 expression and ligand-dependent β2-adrenergic receptor downregulation between these haplotypes . The authors suggested that patients with certain ADRB2 haplotypes may exhibit phenotypes that differ with regard to initial treatment response or risk of tachyphylaxis . An earlier analysis of 11 polymorphisms from within the ADRB2 coding region and up to 5 kb in the 5′UTR region by Bleecker et al. included 3 of the haplotypes examined by Panebra et al.  and showed no differences between these haplotypes in the clinical response to ICS/LABA treatment based on measures of pulmonary function and asthma exacerbations in studies of up to 7 months in duration .
This study describes a novel sequencing-based genotyping approach to determine the alleles present in a poly-C–rich region of the ADRB2 3′UTR. Results show major variation in this region of the gene; however, the variation in the 3′UTR of ADRB2 did not affect baseline pulmonary function or therapeutic responses to ICS/LABA combination therapy in this study. Thus, ADRB2 3′UTR genotype does not predict therapeutic responses to ICS/LABA combination therapy.
Study supported by AstraZeneca LP Wilmington, Delaware, USA, and AstraZeneca, Alderley Park, Cheshire, UK. Drs. Bleecker and Meyers were supported by NIH grant HL 056899.
Rachael Lawrance, Carl Cresswell, Mitchell Goldman, and Helen Ambrose are AstraZeneca employees and stockholders.
Study supported by AstraZeneca LP Wilmington, Delaware, USA, and AstraZeneca, Alderley Park, Cheshire, UK. Drs. Bleecker and Meyers were supported by NIH grant HL 056899.
β2-adrenergic receptor gene
Analysis of variance
Dry powder inhaler
Forced expiratory volume in one second
Forced vital capacity
Long-acting β2-adrenergic agonist
Polymerase chain reaction
Peak expiratory flow
Short-acting β2-adrenergic agonist
Salpeter SR, Buckley NS, Ormiston TM, Salpeter EE: Meta-analysis: effect of long-acting β-agonists on severe asthma exacerbations and asthma-related deaths. Ann Intern Med. 2006, 144: 904-912.
Sin DD, Man J, Sharpe H, Gan WQ, Man SF: Pharmacological management to reduce exacerbations in adults with asthma: a systematic review and meta-analysis. JAMA. 2004, 292: 367-376. 10.1001/jama.292.3.367.
Donohue JF: Therapeutic responses in asthma and COPD: bronchodilators. Chest. 2004, 126: 125S-137S. 10.1378/chest.126.2_suppl_1.125S.
Moore PE, Laporte JD, Abraham JH, Schwartzman IN, Yandava CN, Silverman ES, Drazen JM, Wand MP, Panettieri RA, Shore SA: Polymorphism of the β2-adrenergic receptor gene and desensitization in human airway smooth muscle. Am J Respir Crit Care Med. 2000, 162: 2117-2124.
Taylor MR: Pharmacogenetics of the human beta-adrenergic receptors. Pharmacogenomics J. 2007, 7: 29-37. 10.1038/sj.tpj.6500393.
Taylor DR, Hall IP: ADRB2 polymorphisms and β2 agonists. Lancet. 2007, 370: 2075-2076. 10.1016/S0140-6736(07)61876-5.
Taylor DR, Kennedy MA: Genetic variation of the β2-adrenoceptor: its functional and clinical importance in bronchial asthma. Am J Pharmacogenomics. 2001, 1: 165-174.
Israel E, Drazen JM, Liggett SB, Boushey HA, Cherniack RM, Chinchilli VM, Cooper DM, Fahy JV, Fish JE, Ford JG, Kraft M, Kunselman S, Lazarus SC, Lemanske RF, Martin RJ, McLean DE, Peters SP, Silverman EK, Sorkness CA, Szefler SJ, Weiss ST, Yandava CN, for the National Heart, Lung, and Blood Institute's Asthma Clinical Research Network: The effect of polymorphisms of the β2-adrenergic receptor on the response to regular use of albuterol in asthma. Am J Respir Crit Care Med. 2000, 162: 75-80.
Israel E, Chinchilli VM, Ford JG, Boushey HA, Cherniack R, Craig TJ, Deykin A, Fagan JK, Fahy JV, Fish J, Kraft M, Kunselman SJ, Lazarus SC, Lemanske RF, Liggett SB, Martin RJ, Mitra N, Peters SP, Silverman E, Sorkness CA, Szefler SJ, Wechsler M, Weiss ST, Drazen JM, for the National Heart, Lung, and Blood Institute’s Asthma Clinical Research Network: Use of regularly scheduled albuterol treatment in asthma: genotype-stratified, randomised, placebo-controlled cross-over trial. Lancet. 2004, 364: 1505-1512. 10.1016/S0140-6736(04)17273-5.
Wechsler ME, Lehman E, Lazarus SC, Lemanske RF, Boushey HA, Deykin A, Fahy JV, Sorkness CA, Chinchilli VM, Craig TJ, DiMango E, Kraft M, Leone F, Martin RJ, Peters SP, Szefler SJ, Liu W, Israel E, for the National Heart, Lung, and Blood Institute’s Asthma Clinical Research Network: β-adrenergic receptor polymorphisms and response to salmeterol. Am J Respir Crit Care Med. 2006, 173: 519-552. 10.1164/rccm.200509-1519OC.
Taylor DR, Drazen JM, Herbison GP, Yandava CN, Hancox RJ, Town GI: Asthma exacerbations during long term β agonist use: influence of β2 adrenoceptor polymorphism. Thorax. 2000, 55: 762-767. 10.1136/thorax.55.9.762.
Bleecker ER, Yancey SW, Baitinger LA, Edwards LD, Klotsman M, Anderson WH, Dorinsky PM: Salmeterol response is not affected by β2-adrenergic receptor genotype in subjects with persistent asthma. J Allergy Clin Immunol. 2006, 118: 809-816. 10.1016/j.jaci.2006.06.036.
Bleecker ER, Postma DS, Lawrance RM, Meyers DA, Ambrose HJ, Goldman M: Effect of ADRB2 polymorphisms on response to long acting β2-agonist therapy: a pharmacogenetic analysis of two randomised studies. Lancet. 2007, 370: 2118-2125. 10.1016/S0140-6736(07)61906-0.
Bleecker ER, Nelson HS, Kraft M, Corren J, Meyers DA, Yancey SW, Anderson WH, Emmett AH, Ortega HG: β2-receptor polymorphisms in patients receiving salmeterol with or without fluticasone propionate. Am J Respir Crit Care Med. 2010, 181: 676-687. 10.1164/200809-1511OC.
Wechsler ME, Kunselman SJ, Chinchilli VM, Bleecker E, Boushey HA, Calhoun WJ, Ameredes BT, Castro M, Craig TJ, Denlinger L, Fahy JV, Jarjour N, Kazani S, Kim S, Kraft M, Lazarus SC, Lemanske RF, Markezich A, Martin RJ, Permaul P, Peters SP, Ramsdell J, Sorkness CA, Sutherland ER, Szefler SJ, Walter MJ, Wasserman SI, Israel E, for the National Heart, Lung, and Blood Institute’s Asthma Clinical Research Network: Effect of β2-adrenergic receptor polymorphism on response to longacting β2 agonist in asthma (LARGE trial): a genotype-stratified, randomised, placebo-controlled, crossover trial. Lancet. 2009, 374: 1754-1764. 10.1016/S0140-6736(09)61492-6.
Hawkins GA, Tantisira K, Meyers DA, Ampleford EJ, Moore WC, Klanderman B, Liggett SB, Peters SP, Weiss ST, Bleecker ER: Sequence, haplotype, and association analysis of ADRβ2 in a multiethnic asthma case-control study. Am J Respir Crit Care Med. 2006, 174: 1101-1109. 10.1164/rccm.200509-1405OC.
Panebra A, Schwarb M, Swift SM, Weiss ST, Bleecker ER, Hawkins GA, Liggett SB: Variable-length poly-C tract polymorphisms of the β2-adrenergic receptor 3′-UTR alter expression and agonist regulation. Am J Phsiol Lung Cell Mol Physiol. 2008, 294: L190-L195.
Kuna P, Peters MJ, Manjra AI, Jorup C, Naya IP, Martinez-Jimenez NE, Buhl R: Effect of budesonide/formoterol maintenance and reliever therapy on asthma exacerbations. Int J Clin Pract. 2007, 61: 725-736. 10.1111/j.1742-1241.2007.01338.x.
dbSNP Database. http://www.ncbi.nlm.nih.gov/projects/SNP/snp_ref.cgi?rs=28763957,
Subramaniam K, Chen K, Joseph K, Raymond JR, Tholanikunnel BG: The 3′-untranslated region of the β2-adrenergic receptor mRNA regulates receptor synthesis. J Biol Chem. 2004, 279: 27108-27115. 10.1074/jbc.M401352200.
Tholanikunnel BG, Raymond JR, Malbon CC: Analysis of the AU-rich elements in the 3′-untranslated region of β2-adrenergic receptor mRNA by mutagenesis and identification of the homologous AU-rich region from different species. Biochemistry. 1999, 38: 15564-15572. 10.1021/bi9913348.
Danner S, Frank M, Lohse MJ: Agonist regulation of human β2-adrenergic receptor mRNA stability occurs via a specific AU-rich element. J Biol Chem. 1998, 273: 3223-3229. 10.1074/jbc.273.6.3223.
Shyu A, Wilkinson MF, van Hoof A: Messenger RNA regulation: to translate or to degrade. EMBO J. 2008, 24: 471-481.
Makeyev AV, Liebhaber SA: The poly(C)-binding proteins: a multiplicity of functions and a search for mechanisms. RNA. 2002, 8: 265-278. 10.1017/S1355838202024627.
Panebra A, Wang WC, Malone MM, Pitter DR, Weiss ST, Hawkins GA, Liggett SB: Common ADRB2 haplotypes derived from 26 polymorphic sites direct beta2-adrenergic receptor expression and regulation phenotypes. PLoS One. 2010, 5: e11819-10.1371/journal.pone.0011819.
Katti MV, Ranjekar PK, Gupta VS: Differential distribution of simple sequence repeats in eukaryotic genome sequences. Mol Biol Evol. 2001, 18: 1161-1167. 10.1093/oxfordjournals.molbev.a003903.
Cohen H, Danin-Poleg Y, Cohen CJ, Sprecher E, Darvasi A, Kashi Y: Mono-nucleotide repeats (MNRs): a neglected polymorphism for generating high density genetic maps in silico. Hum Genet. 2004, 115: 213-220.
Nickerson DA, Taylor SL, Weiss KM, Clark AG, Hutchinson RG, Stengård J, Salomaa V, Vartiainen E, Boerwinkle E, Sing CF: DNA sequence diversity in a 9.7-kb region of the human lipoprotein lipase gene. Nat Genet. 1998, 19: 233-240. 10.1038/907.
dbSNP Database. http://www.ncbi.nlm.nih.gov/projects/SNP/,
Sanchez-Cespedes M, Parrella P, Nomoto S, Cohen D, Xiao Y, Esteller M, Jeronimo C, Jordan RC, Nicol T, Koch WM, Schoenberg M, Mazzarelli P, Fazio VM, Sidransky D: Identification of a mononucleotide repeat as a major target for mitochondrial DNA alterations in human tumors. Cancer Res. 2001, 61: 7015-7019.
Newton CR, Graham A, Heptinstall LE, Powell SJ, Summers C, Kalsheker N, Smith JC, Markham AF: Analysis of any point mutation in DNA. The amplification refractory mutation system (ARMS). Nucleic Acids Res. 1989, 17: 2503-2516. 10.1093/nar/17.7.2503.
The authors thank Scientific Connexions (Newtown, PA) for assistance with manuscript editing. Editorial support funded by AstraZeneca LP. The authors also thank Zoë Taylor for assistance with DNA sequencing and Anne-Marie Sims and Sarah Bujac for scientific contribution during preparation of the manuscript.
Helen Ambrose, Rachael Lawrance, Carl Cresswell, and Mitchell Goldman are AstraZeneca employees and stockholders. Eugene R Bleecker has received grant support to perform clinical trials from AstraZeneca and GlaxoSmithKline administered by his employer, Wake Forest Health Sciences, for both companies; has served as a consultant with AstraZeneca, MedImmune, and GlaxoSmithKline; and has presented CME and other lectures sponsored by AstraZeneca and GlaxoSmithKline. Deborah A Meyers has received grant funding from AstraZeneca for directing a 2-day postgraduate course on human genetics and pharmacogenetics in 2006 and 2007 and is a consultant with MedImmune.
ERB and DAM contributed substantially to the interpretation of the data and to drafting the manuscript and revising it critically for important intellectual content, and they provided final approval for the version to be published. MG and HJA contributed substantially to the conception and design of the study, interpretation of the data, and revising the manuscript critically for important intellectual content; they also provided final approval for the version to be published. RML contributed substantially to the development of the statistical analysis plan and to analysis and interpretation of the data; she also provided final approval for the version to be published. CJC identified a novel solution for DNA sequencing, contributed substantially to the generation of genotype data and to drafting the manuscript, and provided final approval for the version to be published. All authors read and approved the final manuscript.
About this article
Cite this article
Ambrose, H.J., Lawrance, R.M., Cresswell, C.J. et al. Effect of β2-adrenergic receptor gene (ADRB2) 3′ untranslated region polymorphisms on inhaled corticosteroid/long-acting β2-adrenergic agonist response. Respir Res 13, 37 (2012). https://doi.org/10.1186/1465-9921-13-37
- Inhaled corticosteroid
- β2-adrenergic receptor
- 3′ untranslated region
- Poly-C repeat