New Signaling Pathway Targeting Systemic Lupus Erythematosus
NCT ID: NCT03984227
Last Updated: 2019-06-28
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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UNKNOWN
60 participants
OBSERVATIONAL
2019-07-31
2021-04-30
Brief Summary
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Detailed Description
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Gasdermin D was recently identified as the final pyroptosis executioner downstream of inflammasome activation, and may be an attractive drug target for many diseases. GSDMD is a member of the gasdermin protein family. It was identified as a caspase substrate. Under normal cellular conditions, the C-terminus of GSDMD auto-inhibits the pore-forming activity of the N-terminus. When extracellular signals associated with pyroptosis activate inflammasomes they subsequently cleave and activate caspases-1, -4, -5, and -11. Consequently, activated caspase-1 cleaves and separates the N- and C-terminals of GSDMD. Activated GSDMD forms nanoscopic pores in the cell membrane, leading to the release of proinflammatory materials and cell swelling.
Reactive oxygen species regulates the signaling pathways in response to the changes of the intracellular and extracellular environments. However, overproduction of ROS is toxic and lead to dysfunction of cell and tissue. Oxidative stress is increased in SLE. The increased ROS could promote the release of inflammatory related signaling factors, including nod-like receptor inflammasome and nuclear factor-κB. A recent study showed that inhibition of ROS generation suppressed pyroptosis of hematopoietic stem cells. It has been widely reported that NF-kB is a critical molecular switch for cellular response to oxidative stress. NF-kB exists in the form of dimer and has been demonstrated to be involved in the development and progression of various diseases associated with inflammation, apoptosis, and proliferation. A recent study showed that NF-kB is an essential transcription factor of GSDMD.
In the recent decades, increasing evidence have revealed the roles of epigenetic dysregulation, including microRNA, in the pathogenesis of SLE. MiRNAs is a class of short non-coding RNA approximately 21-25 nucleotides in length that plays important roles in many cellular processes by regulating gene expression. MiRNAs make up a novel class of post-transcriptional gene regulators By combining with the 3' noncoding region of target gene mRNA inducing their degradation or impairing their translation.
MiR-379-5p is located at delta-like 1 homolog-deiodinase, iodothyronine 3 genomic region on 14q32.31. The DLK1-DIO3 region contains 54 miRNAs that is associated with organ development and disease pathogenesis, especially carcinogenesis. Luciferase reporter assays showed that GSDMD was a direct target of miR-379-5p. The over-expression of miR-379-5p blocked the arsenite induced increases of GSDMD levels effect that were reversed by up-regulation of GSDMD.
Conditions
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Study Design
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CASE_CONTROL
RETROSPECTIVE
Study Groups
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SLE patient group
SLE diagnosed patients between (18- 60) years old will be enrolled. All participants should met at least four of the American College of Rheumatology criteria (Hochberg, 1997). Disease activity will be assessed in accordance with the SLE Disease Activity Score (SLEDAI 2000 (SLEDAI-2K) (Ward et al., 2000).
Taking peripheral blood samples
quantitative real-time polymerase chain reaction
control group
The control group will include age and sex matched healthy volunteers
Taking peripheral blood samples
quantitative real-time polymerase chain reaction
Interventions
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Taking peripheral blood samples
quantitative real-time polymerase chain reaction
Eligibility Criteria
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Inclusion Criteria
Exclusion Criteria
* Patients with known pre-existing infection.
* clinical diagnosis of cancer.
* patients diagnosed with concomitant acute myocardial infarction.
18 Years
60 Years
ALL
No
Sponsors
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Assiut University
OTHER
Responsible Party
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Eman Ragab Mohamed Ibrahem
ASSISTANT LECTURER OF MEDICAL BIOCHEMISTRY
Principal Investigators
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Ghada M Ezzat, PhD
Role: PRINCIPAL_INVESTIGATOR
Department of Medical Biochemistry, Faculty of Medicine, Assiut University
Marwa A Gaber, PhD
Role: PRINCIPAL_INVESTIGATOR
Department of Medical Biochemistry, Faculty of Medicine, Assiut University
Central Contacts
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References
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Basiorka AA, McGraw KL, Eksioglu EA, Chen X, Johnson J, Zhang L, Zhang Q, Irvine BA, Cluzeau T, Sallman DA, Padron E, Komrokji R, Sokol L, Coll RC, Robertson AA, Cooper MA, Cleveland JL, O'Neill LA, Wei S, List AF. The NLRP3 inflammasome functions as a driver of the myelodysplastic syndrome phenotype. Blood. 2016 Dec 22;128(25):2960-2975. doi: 10.1182/blood-2016-07-730556. Epub 2016 Oct 13.
Dang Y, Wang X, Hao Y, Zhang X, Zhao S, Ma J, Qin Y, Chen ZJ. MicroRNA-379-5p is associate with biochemical premature ovarian insufficiency through PARP1 and XRCC6. Cell Death Dis. 2018 Jan 24;9(2):106. doi: 10.1038/s41419-017-0163-8.
Li J, Xue J, Wang D, Dai X, Sun Q, Xiao T, Wu L, Xia H, Mostofa G, Chen X, Wei Y, Chen F, Quamruzzaman Q, Zhang A, Liu Q. Regulation of gasdermin D by miR-379-5p is involved in arsenite-induced activation of hepatic stellate cells and in fibrosis via secretion of IL-1beta from human hepatic cells. Metallomics. 2019 Feb 20;11(2):483-495. doi: 10.1039/c8mt00321a.
Magna M, Pisetsky DS. The Role of Cell Death in the Pathogenesis of SLE: Is Pyroptosis the Missing Link? Scand J Immunol. 2015 Sep;82(3):218-24. doi: 10.1111/sji.12335.
Shi G, Abbott KN, Wu W, Salter RD, Keyel PA. Dnase1L3 Regulates Inflammasome-Dependent Cytokine Secretion. Front Immunol. 2017 May 8;8:522. doi: 10.3389/fimmu.2017.00522. eCollection 2017.
Other Identifiers
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Systemic lupus erythematosus
Identifier Type: -
Identifier Source: org_study_id