The Role of Programmed Death Ligand -1 (Pdl-1) in Lung Cancer
NCT ID: NCT05082636
Last Updated: 2021-10-25
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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COMPLETED
90 participants
OBSERVATIONAL
2018-06-15
2021-03-25
Brief Summary
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Detailed Description
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Programmed cell death 1 (PD-1) (Entrez Gene: 29126) and its ligand, programmed cell death ligand-1 (PDL-1) are new members of the CD28/B7 stimulatory superfamily. They mediate a negative signal, which inhibits functioning and proliferation of T and B cells, and reduce interleukin-2(IL-2), IL-10, and interferon-γ secretions.This inhibitory pathway is closely related to tumor progression, it provides an immune escape for tumor cells through cytotoxic T-cell inactivation. It plays an important role in the microenvironment of the tumor progress.Expression of this gene in tumor cells is prognostic in many types of human malignancies.Interaction of this ligand with its receptor inhibits T-cell activation and cytokine production. During infection or inflammation of normal tissue, this interaction is important for preventing autoimmunity by maintaining homeostasis of the immune response with local immune tolerance to tumors.
The biologically active form of Vit D, namely calcitriol or 1,25-dihydroxy Vitamin D (1,25(OH)2D ), is generated when 25(OH)D is hydroxylated in the kidneys by the cytochrome 1-α- hydroxylase enzyme (CYP27B1) (RXR) Yet, Vit. D has controversial effects; it has been shown to induce apoptosis of cancer cells and likely to play a promising role in cancer therapy.Numerous studies have proposed a strong relationship between low serum Vit. D levels and increased risk of cancer, especially by the strongest evidence in breast and colorectal cancer.
The biological actions as anti-cancer effects of calcitriol are mostly exerted through genomic actions mediated by the VDR and its existence in the numerous tumor tissues is suggestive of its role in tumor genesis.The VDR is a member of the nuclear receptor/steroid hormone receptor superfamily. These receptors function as ligand-activated, transcriptional regulatory proteins.VDR/RXR complex translocates into the nucleus and induces the transcription of phosphoinositide phospholipase C-γ1 (PLC-γ1) through interaction with Vit.D responsive element (VDRE) on specific genes.
There is an up-regulation of VDR upon exposure to Vit.D. The anti-proliferative and pro differentiating effects of Vit.D are mostly mediated through the nuclear VDR.In many types of cancers, decreased VDR expression has been found in advanced neoplasms.It was demonstrated a differential expression of VDR (nuclear/cytoplasm) in progression of normal to invasive squamous cell carcinoma.
In this study, we aimed to detect tissue PDL-1, VDR expression levels and serum Vit.D levels as biomarkers for the early detection of LC, investigating the correlations between these biochemical indices and the clinicopathological features, and different risk factors in lung cancer patients.
Conditions
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Study Design
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CASE_CONTROL
CROSS_SECTIONAL
Study Groups
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case
54 patients with early stage lung (stage I, II) cancer (Group 1) were selected from the Chest Department of Assiut University Hospital,
Observational Study ( Tissue Biopsy )
control study includes a total of 90 subjects. Of them 54 patients with early stage lung (stage I, II) cancer (Group 1) were selected from the Chest Department of Assiut University Hospital, besides 36 healthy controls; who were clinically suspicious with chest masses and proven histopathologically to be negative cancer (Group 2).obtained by fiberoptic bronchoscopy
control
besides 36 healthy controls; who were clinically suspicious with chest masses and proven histopathologically to be negative cancer (Group 2).
Observational Study ( Tissue Biopsy )
control study includes a total of 90 subjects. Of them 54 patients with early stage lung (stage I, II) cancer (Group 1) were selected from the Chest Department of Assiut University Hospital, besides 36 healthy controls; who were clinically suspicious with chest masses and proven histopathologically to be negative cancer (Group 2).obtained by fiberoptic bronchoscopy
Interventions
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Observational Study ( Tissue Biopsy )
control study includes a total of 90 subjects. Of them 54 patients with early stage lung (stage I, II) cancer (Group 1) were selected from the Chest Department of Assiut University Hospital, besides 36 healthy controls; who were clinically suspicious with chest masses and proven histopathologically to be negative cancer (Group 2).obtained by fiberoptic bronchoscopy
Eligibility Criteria
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Inclusion Criteria
Exclusion Criteria
40 Years
70 Years
ALL
Yes
Sponsors
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Assiut University
OTHER
Responsible Party
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Norhan Salah Abd-Elmawgoud
Teaching and Research Assistant
Locations
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Assiut University
Asyut, , Egypt
Countries
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References
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Ceeraz S, Nowak EC, Noelle RJ. B7 family checkpoint regulators in immune regulation and disease. Trends Immunol. 2013 Nov;34(11):556-63. doi: 10.1016/j.it.2013.07.003. Epub 2013 Aug 13.
Zhang Y, Jiang X, Li X, Gaman MA, Kord-Varkaneh H, Rahmani J, Salehi-Sahlabadi A, Day AS, Xu Y. Serum Vitamin D Levels and Risk of Liver Cancer: A Systematic Review and Dose-Response Meta-Analysis of Cohort Studies. Nutr Cancer. 2021;73(8):1-9. doi: 10.1080/01635581.2020.1797127. Epub 2020 Jul 24.
Kim SH, Chen G, King AN, Jeon CK, Christensen PJ, Zhao L, Simpson RU, Thomas DG, Giordano TJ, Brenner DE, Hollis B, Beer DG, Ramnath N. Characterization of vitamin D receptor (VDR) in lung adenocarcinoma. Lung Cancer. 2012 Aug;77(2):265-71. doi: 10.1016/j.lungcan.2012.04.010. Epub 2012 May 6.
Other Identifiers
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PDL-1 Lung Cancer
Identifier Type: -
Identifier Source: org_study_id