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Molinelli E, Simonetti O. Bimekizumab: dual inhibition as a promising tool in the management of hidradenitis suppurativa. Lancet 2024; 403:2457-2459. [PMID: 38797173 DOI: 10.1016/s0140-6736(24)00591-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 03/20/2024] [Indexed: 05/29/2024]
Affiliation(s)
- Elisa Molinelli
- Dermatological Unit, Department of Clinical and Molecular Sciences, Polytechnic Marche University, 60121 Ancona, Italy.
| | - Oriana Simonetti
- Dermatological Unit, Department of Clinical and Molecular Sciences, Polytechnic Marche University, 60121 Ancona, Italy
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Kimball AB, Jemec GBE, Sayed CJ, Kirby JS, Prens E, Ingram JR, Garg A, Gottlieb AB, Szepietowski JC, Bechara FG, Giamarellos-Bourboulis EJ, Fujita H, Rolleri R, Joshi P, Dokhe P, Muller E, Peterson L, Madden C, Bari M, Zouboulis CC. Efficacy and safety of bimekizumab in patients with moderate-to-severe hidradenitis suppurativa (BE HEARD I and BE HEARD II): two 48-week, randomised, double-blind, placebo-controlled, multicentre phase 3 trials. Lancet 2024; 403:2504-2519. [PMID: 38795716 DOI: 10.1016/s0140-6736(24)00101-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 01/16/2024] [Accepted: 01/17/2024] [Indexed: 05/28/2024]
Abstract
BACKGROUND Patients with hidradenitis suppurativa have substantial unmet clinical needs and scarce therapeutic options. We aimed to assess the efficacy and safety of bimekizumab, a monoclonal IgG1 antibody that selectively inhibits interleukin (IL)-17F and IL-17A, in patients with moderate-to-severe hidradenitis suppurativa. METHODS BE HEARD I and II were two identically designed, 48-week randomised, double-blind, placebo-controlled, multicentre phase 3 trials. Patients aged 18 years or older with moderate-to-severe hidradenitis suppurativa were randomly assigned 2:2:2:1 using interactive response technology (stratified by worst Hurley Stage at baseline and baseline systemic antibiotic use) to receive subcutaneous bimekizumab 320 mg every 2 weeks; bimekizumab 320 mg every 2 weeks to week 16, then every 4 weeks to week 48; bimekizumab 320 mg every 4 weeks to week 48; or placebo to week 16, then bimekizumab 320 mg every 2 weeks. The primary outcome was an hidradenitis suppurativa clinical response of at least 50%, defined as a reduction in total abscess and inflammatory nodule count of at least 50% from baseline with no increase from baseline in abscess or draining tunnel count (HiSCR50) at week 16. Efficacy analyses included all randomly assigned study patients (intention-to-treat population). Safety analyses included all patients who received at least one full or partial dose of study treatment in the safety set, and of bimekizumab in the active-medication set. These trials are registered at ClinicalTrials.gov, NCT04242446 and NCT04242498, and both are completed. FINDINGS Patients for BE HEARD I were recruited from Feb 19, 2020, to Oct 27, 2021, and 505 patients were enrolled and randomly assigned. Patients for BE HEARD II were recruited from March 2, 2020, to July 28, 2021, and 509 patients were enrolled and randomly assigned. The primary outcome at week 16 was met in the group who received bimekizumab every 2 weeks using modified non-responder imputation; higher responder rates were observed with bimekizumab versus placebo in both trials: 138 (48%) of 289 patients versus 21 (29%) of 72 patients in BE HEARD I (odds ratio [OR] 2·23 [97·5% CI 1·16-4·31]; p=0·0060) and 151 (52%) of 291 patients versus 24 (32%) of 74 patients in BE HEARD II (2·29 [1·22-4·29]; p=0·0032). In BE HEARD II, HiSCR50 was also met in the group who were administered bimekizumab every 4 weeks (77 [54%] of 144 vs 24 [32%] of 74 with placebo; 2·42 [1·22-4·80]; p=0·0038). Responses were maintained or increased to week 48. Serious treatment-emergent adverse events were reported in 40 (8%) patients in BE HEARD I and in 24 (5%) patients in BE HEARD II treated with bimekizumab over 48 weeks. The most frequently reported treatment-emergent adverse events to week 48 were hidradenitis in both trials, in addition to coronavirus infection and diarrhoea in BE HEARD I, and oral candidiasis and headache in BE HEARD II. One death was reported across the two trials, and was due to congestive heart failure in a patient with substantial cardiovascular history treated with bimekizumab every 2 weeks in BE HEARD I (considered unrelated to bimekizumab treatment by the investigator). No new safety signals were observed. INTERPRETATION Bimekizumab was well tolerated by patients with hidradenitis suppurativa and produced rapid and deep clinically meaningful responses that were maintained up to 48 weeks. Data from these two trials support the use of bimekizumab for the treatment of patients with moderate-to-severe hidradenitis suppurativa. FUNDING UCB Pharma.
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Affiliation(s)
- Alexa B Kimball
- Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
| | - Gregor B E Jemec
- Department of Dermatology, Zealand University Hospital, Roskilde, Denmark; Department of Clinical Medicine, Faculty of Health and Medical Science, University of Copenhagen, Copenhagen, Denmark; European Hidradenitis Suppurativa Foundation, Dessau, Germany
| | - Christopher J Sayed
- Department of Dermatology, University of North Carolina School of Medicine, Chapel Hill, NC, USA; European Hidradenitis Suppurativa Foundation, Dessau, Germany
| | - Joslyn S Kirby
- Department of Dermatology, Penn State University, Hershey, PA, USA
| | - Errol Prens
- European Hidradenitis Suppurativa Foundation, Dessau, Germany; Department of Dermatology, Erasmus University Medical Centre Rotterdam, Rotterdam, Netherlands
| | - John R Ingram
- European Hidradenitis Suppurativa Foundation, Dessau, Germany; Department of Dermatology and Academic Wound Healing, Division of Infection and Immunity, Cardiff University, Cardiff, UK
| | - Amit Garg
- Northwell Health, New Hyde Park, NY, USA
| | - Alice B Gottlieb
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Jacek C Szepietowski
- European Hidradenitis Suppurativa Foundation, Dessau, Germany; Department of Dermatology, Venereology, and Allergology, Wroclaw Medical University, Wroclaw, Poland
| | - Falk G Bechara
- European Hidradenitis Suppurativa Foundation, Dessau, Germany; Department of Dermatology, Venereology, and Allergology, St Josef-Hospital, Ruhr-University, Bochum, Germany
| | - Evangelos J Giamarellos-Bourboulis
- European Hidradenitis Suppurativa Foundation, Dessau, Germany; Fourth Department of Internal Medicine, National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | - Hideki Fujita
- Division of Cutaneous Science, Department of Dermatology, Nihon University School of Medicine, Tokyo, Japan
| | | | | | | | | | | | | | | | - Christos C Zouboulis
- European Hidradenitis Suppurativa Foundation, Dessau, Germany; Departments of Dermatology, Venereology, Allergology, and Immunology, Staedtisches Klinikum Dessau, Brandenburg Medical School Theodor Fontane and Faculty of Health Sciences Brandenburg, Dessau, Germany
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Nie T, Shirley M. Bimekizumab: A Review in Psoriatic Arthritis. Drugs 2024; 84:587-598. [PMID: 38703349 DOI: 10.1007/s40265-024-02026-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/19/2024] [Indexed: 05/06/2024]
Abstract
Although several biological disease-modifying antirheumatic drugs (bDMARDs), including interleukin (IL)-17A inhibitors, are approved for psoriatic arthritis, the treatment of this disease remains suboptimal. Bimekizumab (Bimzelx®), a dual IL-17A and IL-17F inhibitor, is approved in the EU, Great Britain and Japan for the treatment of psoriatic arthritis. In pivotal phase 3 clinical trials in patients who were bDMARD-naïve or previously had an inadequate response or intolerance to tumour necrosis factor (TNF) α inhibitors, bimekizumab improved the signs and symptoms of psoriatic arthritis across a range of joint, skin, radiographic and patient-reported outcomes compared with placebo, including the proportion of patients achieving a ≥ 50% response in the American College of Rheumatology criteria. Phase 2 clinical trial data have shown that responses are maintained up to 3 years. Bimekizumab was generally well tolerated in patients with psoriatic arthritis, with a safety profile consistent with that in other approved indications. The most common adverse events included nasopharyngitis, upper respiratory tract infection, oral candidiasis, headache and diarrhoea. In conclusion, bimekizumab extends the treatment options available to patients with psoriatic arthritis.
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Affiliation(s)
- Tina Nie
- Springer Nature, Mairangi Bay, Private Bag 65901, Auckland, 0754, New Zealand.
| | - Matt Shirley
- Springer Nature, Mairangi Bay, Private Bag 65901, Auckland, 0754, New Zealand
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Wolk K, Schielein M, Maul JT, Widmayer F, Wanke K, Fischmann W, Nathan P, Sabat R. Patient-reported assessment of medical care for chronic inflammatory skin diseases: an enterprise-based survey. Front Med (Lausanne) 2024; 11:1384055. [PMID: 38698787 PMCID: PMC11064793 DOI: 10.3389/fmed.2024.1384055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 03/15/2024] [Indexed: 05/05/2024] Open
Abstract
Background Chronic inflammatory skin diseases (CISDs) are among the most common diseases in the Western world. Current estimates of medical care for CISDs are primarily based on surveys among patients in medical care facilities and on health insurance data. Aim Survey-based examination to what extent CISD patients in health-aware environment consider their skin disease to be controlled. Methods The survey of CISD patients was carried out in 2022 among the employees of a pharmaceutical company located in Germany and Switzerland. Software-based, anonymous, self-reported questionnaires were used. Results The number of employees, who answered the questionnaire, was 905. Of these, 222 participants (24.5%) reported having at least one CISD. 28.7% of participants with CISD described their disease as being hardly or not controlled. Regarding the nature of disease, more than one third of participants suffering from hidradenitis suppurativa (HS) or psoriasis fell into the hardly/not controlled category. In contrast, the largest proportion of participants with chronic spontaneous urticaria (43%) or atopic dermatitis (42%) considered their CISD to be completely or well controlled. Only 35.5% of CISD sufferers stated that they were currently under medical care for their skin condition. Being under medical care, however, had no influence on the extent CISD sufferers considered their skin disease to be controlled. The number of active CISD episodes but not the total number of symptomatic days per year was negatively associated with poor disease control (p = 0.042 and p = 0.856, respectively). Poor disease control had a negative effect on the personal and professional lives of those affected, as deduced from its positive association with the extent of daily activity impairment and presenteeism (p = 0.005 and p = 0.005, respectively). Moreover, 41.4 and 20.7% of participants with hardly/not controlled disease stated that their CISD had a moderate and severe or very severe impact on their overall lives (p < 0.001), respectively. A severe or very severe impact of their CISD on their overall life was most commonly reported by participants with HS. Conclusion Medical care for CISDs, even in an environment with high socio-economic standard and high health-awareness, still appears to be limited and has a negative impact on individuals and society.
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Affiliation(s)
- Kerstin Wolk
- Psoriasis Research and Treatment Center, Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Interdisciplinary Group Molecular Immunopathology, Dermatology/Medical Immunology, Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | | | - Julia-Tatjana Maul
- Department of Dermatology, University Hospital Zurich, Zurich, Switzerland
- Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | | | | | | | | | - Robert Sabat
- Psoriasis Research and Treatment Center, Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Interdisciplinary Group Molecular Immunopathology, Dermatology/Medical Immunology, Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
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Thapar M, Patel M, Gordon K. Bimekizumab for the treatment of psoriasis. Immunotherapy 2024; 16:431-446. [PMID: 38506262 DOI: 10.2217/imt-2023-0240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2024] Open
Abstract
Psoriasis is a chronic inflammatory skin condition characterized by Th17 T cell-mediated inflammation. An emerging treatment option for psoriasis is bimekizumab, a humanized monoclonal antibody targeting cytokines IL-17A and IL-17F. Phase I trials evaluating bimekizumab reported strong safety, tolerability, and clinical efficacy with most common treatment emergent adverse events being mild to moderate in nature. Phase II trials evaluated dosing intervals, revealing that higher dosages or more frequent administration of bimekizumab resulted in minimal increases in adverse events. Phase III trials and open label extension studies demonstrated a rapid, sustained clinical response when compared with placebo and active comparators. Bimekizumab shows strong efficacy in the treatment of psoriasis and has potential in the treatment of other Th17-mediated pathologies.
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Affiliation(s)
- Molly Thapar
- Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 532261, USA
| | - Milan Patel
- Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 532261, USA
| | - Kenneth Gordon
- Department of Dermatology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
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Tanaka Y, Shaw S. Bimekizumab for the treatment of psoriatic arthritis. Expert Rev Clin Immunol 2024; 20:155-168. [PMID: 37909894 DOI: 10.1080/1744666x.2023.2277266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 10/26/2023] [Indexed: 11/03/2023]
Abstract
INTRODUCTION Interleukin (IL)-17A and IL-17F have overlapping roles in pro-inflammatory signaling and have been implicated in the pathogenesis of psoriatic disease. Bimekizumab is the first human monoclonal antibody to selectively inhibit IL-17F in addition to IL-17A. Bimekizumab has been studied in several phase II/III trials and has been approved for the treatment of patients with psoriatic arthritis (PsA) in the EU and UK. AREAS COVERED A literature search identified clinical trials examining the efficacy and safety of bimekizumab for PsA, which were critically appraised. EXPERT OPINION Clinical trials of bimekizumab in PsA have demonstrated rapid and sustained treatment responses and depth of response across the multiple disease domains. High levels of efficacy were sustained to 152 weeks in phase IIb trials, and to 52 weeks in phase III trials. Bimekizumab was generally well tolerated. As expected, due to the role of IL-17 in the immune response to fungal pathogens, there was an increase in mild-to-moderate, localized fungal infections with bimekizumab treatment, very few of which led to discontinuation. Studies over longer time periods, with relevant comparators from the IL-17A inhibitor class, and real-world data will be important to further define the role of bimekizumab among currently available treatments for PsA. [Figure: see text].
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Affiliation(s)
- Yoshiya Tanaka
- The First Department of Internal Medicine, University of Occupational and Environmental Health, Japan, Kitakyushu, Fukuoka, Japan
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Burshtein J, Shah M, Zakria D, Lockshin B, Crowley J, Merola JF, Gordon K, Shahriari M, Korman NJ, Chovatiya R, Kalb R, Lebwohl M. The Efficacy and Safety of Bimekizumab for Plaque Psoriasis: An Expert Consensus Panel. Dermatol Ther (Heidelb) 2024; 14:323-339. [PMID: 38340237 PMCID: PMC10891030 DOI: 10.1007/s13555-024-01099-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 01/12/2024] [Indexed: 02/12/2024] Open
Abstract
INTRODUCTION Psoriasis is a chronic inflammatory condition affecting the skin, joints, and several other organ systems with significant disease burden. Bimekizumab is the first monoclonal antibody targeting both interleukin (IL)-17A and interleukin-17F and has demonstrated efficacy for treating moderate to severe psoriasis. Limited guidelines exist for incorporating this drug into clinical practice. The purpose of this study was for a panel of experts in psoriasis management to synthesize current literature and provide consensus statements with guidance on use of bimekizumab. METHODS A comprehensive literature search of PubMed, Scopus, and Google Scholar was completed for English-language original research articles on the use of bimekizumab for moderate to severe psoriasis and psoriatic arthritis. A panel of nine dermatologists with significant expertise in treatment of psoriasis gathered to review the articles and create consensus statements on this new medication. A modified Delphi process was used to approve each statement and a strength of recommendation was assigned using Strength of Recommendation Taxonomy criteria. RESULTS The literature search produced 102 articles that met criteria. A thorough screening of the studies for relevance to the research question resulted in 19 articles. These were distributed to all panelists for review prior to a roundtable discussion. The panel unanimously voted to adopt 14 consensus statements and recommendations, 12 of which were given a strength of "A", one of which was given a strength of "B", and one of which was given a strength of "C". CONCLUSION Bimekizumab results in rapid and long-lasting clinical improvement for patients with moderate to severe plaque psoriasis and psoriatic arthritis. It has demonstrated superior efficacy when compared to several other biologics. The safety profile is consistent with other biologics, except for an increased incidence of oropharyngeal candidiasis.
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Affiliation(s)
- Joshua Burshtein
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
| | - Milaan Shah
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Danny Zakria
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Benjamin Lockshin
- US Dermatology Partners, Rockville, MD, USA
- Department of Dermatology, Georgetown University Medical Center, Washington, DC, USA
| | - Jeff Crowley
- Bakersfield Dermatology and Skin Cancer Medical Group, Bakersfield, CA, USA
| | - Joseph F Merola
- Department of Dermatology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Ken Gordon
- Medical College of Wisconsin, Milwaukee, WI, USA
| | - Mona Shahriari
- Department of Dermatology, Yale University, New Haven, CT, USA
| | - Neil J Korman
- University Hospitals Cleveland Medical Center, Cleveland, OH, USA
| | - Raj Chovatiya
- Department of Dermatology, Feinberg School of Medicine at Northwestern University, Chicago, IL, USA
| | - Robert Kalb
- SUNY at Buffalo School of Medicine and Biomedical Sciences, Department of Dermatology, Buffalo Medical Group, Buffalo, NY, USA
| | - Mark Lebwohl
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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Huang Y, Mao CR, Lou Y, Zhan S, Chen Z, Ding W, Ma Z. Design, Synthesis, and Biological Evaluation of an Orally Bioavailable, Potent, and Selective ROCK2 Inhibitor for Psoriasis Treatment. J Med Chem 2023; 66:15205-15229. [PMID: 37943013 DOI: 10.1021/acs.jmedchem.3c01297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
Psoriasis, a prevalent chronic skin disorder, remains a significant therapeutic obstacle. This study centers on rho-associated coiled-coil-containing kinase2 (ROCK2) as an advantageous target for treating psoriasis and identifies five potent and selective ROCK2 inhibitors (A31-35). Notably, A32-35 outperform KD025 in ROCK2/ROCK1 selectivity by up to 216-fold. Among these candidates, A31 emerged as an exceedingly promising molecule, showcasing remarkable inhibitory potency (IC50 = 3.7 ± 0.8 nM), 19-fold ROCK2/ROCK1 selectivity, and favorable pharmacokinetics. Insights from the binding mode study further underscored the pivotal role of interactions with Phe103 on the P-loop in determining the selectivity between ROCK1 and ROCK2. In an imiquimod-induced psoriasis-like mouse model, oral administration of A31 notably ameliorated symptoms by targeting the IL-23/Th17 axis. Based on these compelling findings, A31 was selected as a highly promising compound for further investigation as a potential treatment for psoriasis.
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Affiliation(s)
- Yun Huang
- Institute of Marine Biology and Pharmacology, Ocean College, Zhejiang University, Zhoushan 316021, China
| | - Chu-Ru Mao
- Institute of Marine Biology and Pharmacology, Ocean College, Zhejiang University, Zhoushan 316021, China
| | - Yijie Lou
- Key Laboratory of Digestive Pathophysiology of Zhejiang Province, the First Affiliated Hospital of Zhejiang Chinese Medicine, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Shuai Zhan
- Institute of Marine Biology and Pharmacology, Ocean College, Zhejiang University, Zhoushan 316021, China
| | - Zhe Chen
- Key Laboratory of Digestive Pathophysiology of Zhejiang Province, the First Affiliated Hospital of Zhejiang Chinese Medicine, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Wanjing Ding
- Institute of Marine Biology and Pharmacology, Ocean College, Zhejiang University, Zhoushan 316021, China
- Hainan Institute of Zhejiang University, Sanya 572025, China
| | - Zhongjun Ma
- Institute of Marine Biology and Pharmacology, Ocean College, Zhejiang University, Zhoushan 316021, China
- Hainan Institute of Zhejiang University, Sanya 572025, China
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Carvajal Gonczi CM, Hajiaghayi M, Gholizadeh F, Xavier Soares MA, Touma F, Lopez Naranjo C, Rios AJ, Pozzebon C, Daigneault T, Burchell-Reyes K, Darlington PJ. The β2-adrenergic receptor agonist terbutaline upregulates T helper-17 cells in a protein kinase A-dependent manner. Hum Immunol 2023; 84:515-524. [PMID: 37438188 DOI: 10.1016/j.humimm.2023.06.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 06/30/2023] [Indexed: 07/14/2023]
Abstract
BACKGROUND T helper 17 (Th17) cells produce IL-17A cytokine and can exacerbate autoimmune diseases and asthma. The β2 adrenergic receptor is a g protein-coupled receptor that induces cAMP second messenger pathways. We tested the hypothesis that terbutaline, a β2-adrenergic receptor-specific agonist, promotes IL-17 secretion by memory Th17 cells in a cAMP and PKA-dependent manner. METHODS Venous peripheral blood mononuclear cells (PBMC) from healthy human participants were activated with anti-CD3 and anti-CD28 antibodies. Secreted IL-17A was measured by enzyme linked immunosorbent assay, intracellular IL-17A, and RORγ were measured using flow cytometry, and RORC by qPCR. Memory CD3+CD4+CD45RA-CD45RO+ T cells were obtained by immunomagnetic negative selection and activated with tri-antibody complex CD3/CD28/CD2. Secreted IL-17A, intracellular IL-17A, RORC were measured, and phosphorylated-serine133-CREB was measured by western blotting memory Th cells. RESULTS Terbutaline increased IL-17A (p < 0.001), IL-17A+ cells (p < 0.05), and RORC in activated PBMC and memory Th cells. The PKA inhibitors H89 (p < 0.001) and Rp-cAMP (p < 0.01) abrogated the effects of terbutaline on IL-17A secretion in PBMC and memory T cells. Rolipram increased IL-17A (p < 0.01) to a similar extent as terbutaline. P-Ser133-CREB was increased by terbutaline (p < 0.05) in memory T cells. CONCLUSION Terbutaline augments memory Th17 cells in lymphocytes from healthy participants. This could exacerbate autoimmune diseases or asthma, in cases where Th17 cells are considered to be pro-inflammatory.
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Affiliation(s)
| | - Mehri Hajiaghayi
- Department of Biology, PERFORM Centre, Concordia University, Montreal, Quebec, Canada
| | - Fatemeh Gholizadeh
- Department of Biology, PERFORM Centre, Concordia University, Montreal, Quebec, Canada
| | | | - Fadi Touma
- Department of Biology, PERFORM Centre, Concordia University, Montreal, Quebec, Canada
| | | | - Amanda J Rios
- Department of Biology, PERFORM Centre, Concordia University, Montreal, Quebec, Canada
| | - Chelsea Pozzebon
- Department of Psychology, PERFORM Centre, Concordia University, Montreal, Quebec, Canada
| | - Tina Daigneault
- Department of Biology, PERFORM Centre, Concordia University, Montreal, Quebec, Canada
| | - Kelly Burchell-Reyes
- Department of Chemistry and Biochemistry, PERFORM Centre, Concordia University, Montreal, Quebec, Canada
| | - Peter J Darlington
- Department of Biology, PERFORM Centre, Concordia University, Montreal, Quebec, Canada; Department of Psychology, PERFORM Centre, Concordia University, Montreal, Quebec, Canada; Department of Health, Kinesiology & Applied Physiology, PERFORM Centre, Montreal, Quebec, Canada.
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