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Daei Sorkhabi A, Komijani E, Sarkesh A, Ghaderi Shadbad P, Aghebati-Maleki A, Aghebati-Maleki L. Advances in immune checkpoint-based immunotherapies for multiple sclerosis: rationale and practice. Cell Commun Signal 2023; 21:321. [PMID: 37946301 PMCID: PMC10634124 DOI: 10.1186/s12964-023-01289-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 08/19/2023] [Indexed: 11/12/2023] Open
Abstract
Beyond the encouraging results and broad clinical applicability of immune checkpoint (ICP) inhibitors in cancer therapy, ICP-based immunotherapies in the context of autoimmune disease, particularly multiple sclerosis (MS), have garnered considerable attention and hold great potential for developing effective therapeutic strategies. Given the well-established immunoregulatory role of ICPs in maintaining a balance between stimulatory and inhibitory signaling pathways to promote immune tolerance to self-antigens, a dysregulated expression pattern of ICPs has been observed in a significant proportion of patients with MS and its animal model called experimental autoimmune encephalomyelitis (EAE), which is associated with autoreactivity towards myelin and neurodegeneration. Consequently, there is a rationale for developing immunotherapeutic strategies to induce inhibitory ICPs while suppressing stimulatory ICPs, including engineering immune cells to overexpress ligands for inhibitory ICP receptors, such as program death-1 (PD-1), or designing fusion proteins, namely abatacept, to bind and inhibit the co-stimulatory pathways involved in overactivated T-cell mediated autoimmunity, and other strategies that will be discussed in-depth in the current review. Video Abstract.
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Affiliation(s)
- Amin Daei Sorkhabi
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Erfan Komijani
- Department of Veterinary, Medicine, Tabriz Branch, Islamic Azad University, Tabriz, Iran
| | - Aila Sarkesh
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Pedram Ghaderi Shadbad
- Department of Veterinary, Medicine, Tabriz Branch, Islamic Azad University, Tabriz, Iran
| | - Ali Aghebati-Maleki
- Stem Cell Research Center, Tabriz University of Medical Science, Tabriz, Iran
| | - Leili Aghebati-Maleki
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
- Department of Immunology, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
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Hoffman K, Brownell Z, Doyle WJ, Ochoa-Repáraz J. The immunomodulatory roles of the gut microbiome in autoimmune diseases of the central nervous system: Multiple sclerosis as a model. J Autoimmun 2023; 137:102957. [PMID: 36435700 PMCID: PMC10203067 DOI: 10.1016/j.jaut.2022.102957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 11/14/2022] [Indexed: 11/24/2022]
Abstract
The gut-associated lymphoid tissue is a primary activation site for immune responses to infection and immunomodulation. Experimental evidence using animal disease models suggests that specific gut microbes significantly regulate inflammation and immunoregulatory pathways. Furthermore, recent clinical findings indicate that gut microbes' composition, collectively named gut microbiota, is altered under disease state. This review focuses on the functional mechanisms by which gut microbes promote immunomodulatory responses that could be relevant in balancing inflammation associated with autoimmunity in the central nervous system. We also propose therapeutic interventions that target the composition of the gut microbiota as immunomodulatory mechanisms to control neuroinflammation.
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Affiliation(s)
- Kristina Hoffman
- Department of Biological Sciences, Boise State University, Boise, ID, 83725, USA
| | - Zackariah Brownell
- Department of Biological Sciences, Arizona State University, Tempe, AZ, 85281, USA
| | - William J Doyle
- Department of Biological Sciences, Boise State University, Boise, ID, 83725, USA
| | - Javier Ochoa-Repáraz
- Department of Biological Sciences, Boise State University, Boise, ID, 83725, USA.
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Lack of Association between Common LAG3/CD4 Variants and Risk of Migraine. Int J Mol Sci 2023; 24:ijms24021292. [PMID: 36674807 PMCID: PMC9866744 DOI: 10.3390/ijms24021292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 12/31/2022] [Accepted: 01/06/2023] [Indexed: 01/11/2023] Open
Abstract
Several papers have been published suggesting a probable role of inflammatory factors in the etiopathogenesis of migraine. In this study, we investigated the possible association between common variants in the LAG3/CD4 genes (both genes, which are closely related, encode proteins involved in inflammatory and autoimmune responses) in the risk of migraine in a cohort of Caucasian Spanish participants. For this purpose, the frequencies of CD4 rs1922452, CD4 rs951818, and LAG3 rs870849 genotypes and allelic variants, using a specific TaqMan-based qPCR assay, were assessed in 290 patients diagnosed with migraine and in 300 healthy controls. The relationship of these variables with several clinical features of migraine was also analyzed. The frequencies of the analyzed LAG3/CD4 genotypes did not differ significantly between the two study groups and were not related to the sex, age at onset of migraine, family history of migraine, presence or absence of aura, or the triggering effect of ethanol on migraine episodes. These results suggest a lack of association between common variants in the LAG3/CD4 genes and the risk of developing migraine in the Caucasian Spanish population.
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Amin NS, Abd El-Aziz MK, Hamed M, Moustafa RR, El Tayebi HM. Rs205764 and rs547311 in linc00513 may influence treatment responses in multiple sclerosis patients: A pharmacogenomics Egyptian study. Front Immunol 2023; 14:1087595. [PMID: 36883100 PMCID: PMC9985893 DOI: 10.3389/fimmu.2023.1087595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 01/26/2023] [Indexed: 02/21/2023] Open
Abstract
Background Multiple sclerosis (MS) is characterized by a complex etiology that is reflected in the lack of consistently predictable treatment responses across patients of seemingly similar characteristics. Approaches to demystify the underlying predictors of aberrant treatment responses have made use of genome-wide association studies (GWAS), with imminent progress made in identifying single nucleotide polymorphisms (SNPs) associated with MS risk, disease progression, and treatment response. Ultimately, such pharmacogenomic studies aim to utilize the approach of personalized medicine to maximize patient benefit and minimize rate of disease progression. Objective Very limited research is available around the long intergenic non-coding RNA (linc)00513, recently being reported as a novel positive regulator of the type-1 interferon (IFN) pathway, following its overexpression in the presence of two polymorphisms: rs205764 and rs547311 in the promoter region of this gene. We attempt to provide data on the prevalence of genetic variations at rs205764 and rs547311 in Egyptian MS patients, and correlate these polymorphisms with the patients' responses to disease-modifying treatments. Methods Genomic DNA from 144 RRMS patients was isolated and analyzed for genotypes at the positions of interest on linc00513 using RT-qPCR. Genotype groups were compared with regards to their response to treatment; additional secondary clinical parameters including the estimated disability status score (EDSS), and onset of the disease were examined in relation to these polymorphisms. Results Polymorphisms at rs205764 were associated with a significantly higher response to fingolimod and a significantly lower response to dimethylfumarate. Moreover, the average EDSS of patients carrying polymorphisms at rs547311 was significantly higher, whereas no correlation appeared to exist with the onset of MS. Conclusion Understanding the complex interplay of factors influencing treatment response is pivotal in MS. One of the factors contributing to a patient's response to treatment, as well as disease disability, may be polymorphisms on non-coding genetic material, such as rs205764 and rs547311 on linc00513. Through this work, we propose that genetic polymorphisms may partially drive disease disability and inconsistent responses to treatment in MS; we also aim to draw attention towards genetic approaches, such as screening for specific polymorphisms, to possibly direct treatment choices in such a complex disease.
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Affiliation(s)
- Nada Sherif Amin
- Clinical Pharmacology and Pharmacogenomics Research Group, Department of Pharmacology and Toxicology, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo, Egypt
| | - Mostafa K Abd El-Aziz
- Clinical Pharmacology and Pharmacogenomics Research Group, Department of Pharmacology and Toxicology, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo, Egypt
| | - Mohamed Hamed
- Department of Neurology, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
| | - Ramez Reda Moustafa
- Department of Neurology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Hend M El Tayebi
- Clinical Pharmacology and Pharmacogenomics Research Group, Department of Pharmacology and Toxicology, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo, Egypt
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Association between LAG3/CD4 Genes Variants and Risk for Multiple Sclerosis. Int J Mol Sci 2022; 23:ijms232315244. [PMID: 36499569 PMCID: PMC9735634 DOI: 10.3390/ijms232315244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/29/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022] Open
Abstract
Several recent works have raised the possibility of the contribution of the lymphocyte activation gene 3 (LAG3) protein in the inflammatory processes of multiple sclerosis (MS). Results of studies on the possible association between LAG3 gene variants and the risk of MS have been inconclusive. In this study, we tried to show the possible association between the most common single nucleotide variants (SNVs) in the CD4 and LAG3 genes (these two genes are closely related) and the risk of MS in the Caucasian Spanish population. We studied the genotypes and allelic variants CD4 rs1922452, CD4 rs951818, and LAG3 rs870849 in 300 patients diagnosed with MS and 400 healthy patients using specific TaqMan-based qPCR assays. We analyzed the possible influence of the genotype frequency on age at the onset of MS, the severity of MS, clinical evolutive subtypes of MS, and the HLADRB1*1501 genotype. The frequencies of the CD4 rs1922452, CD4 rs951818, and LAG3 rs870849 genotypes and allelic variants were not associated with the risk of MS and were unrelated to gender, age at onset and severity of MS, the clinical subtype of MS, and HLADRB1*1501 genotype. The results of the current study showed a lack of association between the CD4 rs1922452, CD4 rs951818, and LAG3 rs870849 SNVs and the risk of developing MS in the Caucasian Spanish population.
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Jiménez-Jiménez FJ, Gómez-Tabales J, Alonso-Navarro H, Rodríguez C, Turpín-Fenoll L, Millán-Pascual J, Álvarez I, Pastor P, Calleja M, García-Ruiz R, Navarro-Muñoz S, Recio-Bermejo M, Plaza-Nieto JF, García-Albea E, García-Martín E, Agúndez JAG. LAG3/CD4 Genes Variants and the Risk for Restless Legs Syndrome. Int J Mol Sci 2022; 23:ijms232314795. [PMID: 36499121 PMCID: PMC9739762 DOI: 10.3390/ijms232314795] [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: 10/13/2022] [Revised: 11/08/2022] [Accepted: 11/23/2022] [Indexed: 12/02/2022] Open
Abstract
According to several studies, inflammatory factors could be related to the pathogenesis of idiopathic restless legs syndrome (RLS). In addition, RLS and Parkinson's disease (PD) have shown a possible relationship, and recent studies have shown an association between CD4 rs1922452 and CD4 rs951818 single nucleotide variants (SNVs) and the risk for PD. For these reasons, we investigated the possible association between common variants in the LAG3/CD4 genes (which encoded proteins involved in inflammatory and autoimmune responses) and the risk for RLS in a Caucasian Spanish population. We assessed the frequencies of CD4 rs1922452, CD4 rs951818, and LAG3 rs870849 genotypes and allelic variants in 285 patients with idiopathic RLS and 350 healthy controls using a specific TaqMan-based qPCR assay. We also analyzed the possible influence of the genotypes' frequencies on several variables, including age at onset of RLS, gender, family history of RLS, and response to drugs commonly used in the treatment of RLS. We found a lack of association between the frequencies of genotypes and allelic variants of the 3 SNVs studied and the risk of RLS, and a weak though significant association between the CD4 rs1922452 GG genotype and an older age at onset of RLS. With the exception of this association, our findings suggest that common SNVs in the CD4/LAG3 genes are not associated with the risk of developing idiopathic RLS in Caucasian Spanish people.
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Affiliation(s)
- Félix Javier Jiménez-Jiménez
- Section of Neurology, Hospital Universitario del Sureste, E28500 Arganda del Rey, Spain
- Correspondence: or ; Tel.: +34-636-968-395
| | - Javier Gómez-Tabales
- ARADyAL Instituto de Salud Carlos III, University Institute of Molecular Pathology Biomarkers, Universidad de Extremadura, E10003 Cáceres, Spain
| | | | - Christopher Rodríguez
- ARADyAL Instituto de Salud Carlos III, University Institute of Molecular Pathology Biomarkers, Universidad de Extremadura, E10003 Cáceres, Spain
| | - Laura Turpín-Fenoll
- Section of Neurology, Hospital La Mancha-Centro, E13600 Alcázar de San Juan, Spain
| | - Jorge Millán-Pascual
- Section of Neurology, Hospital La Mancha-Centro, E13600 Alcázar de San Juan, Spain
| | - Ignacio Álvarez
- Fundació per la Recerca Biomèdica i Social Mútua de Terrassa, E08221 Terrassa, Spain
- Movement Disorders Unit, Department of Neurology, Hospital Universitari Mutua de Terrassa, E08221 Terrassa, Spain
| | - Pau Pastor
- Fundació per la Recerca Biomèdica i Social Mútua de Terrassa, E08221 Terrassa, Spain
- Movement Disorders Unit, Department of Neurology, Hospital Universitari Mutua de Terrassa, E08221 Terrassa, Spain
- Unit of Neurodegenerative Diseases, Department of Neurology, The Germans Trias i Pujol Research Institute (IGTP), University Hospital Germans Trias i Pujol, E08916 Badalona, Spain
| | - Marisol Calleja
- Section of Neurology, Hospital Universitario del Sureste, E28500 Arganda del Rey, Spain
| | - Rafael García-Ruiz
- Section of Neurology, Hospital La Mancha-Centro, E13600 Alcázar de San Juan, Spain
| | | | - Marta Recio-Bermejo
- Section of Neurology, Hospital La Mancha-Centro, E13600 Alcázar de San Juan, Spain
| | | | - Esteban García-Albea
- Department of Medicine-Neurology, Universidad de Alcalá, E28801 Alcalá de Henares, Spain
| | - Elena García-Martín
- ARADyAL Instituto de Salud Carlos III, University Institute of Molecular Pathology Biomarkers, Universidad de Extremadura, E10003 Cáceres, Spain
| | - José A. G. Agúndez
- ARADyAL Instituto de Salud Carlos III, University Institute of Molecular Pathology Biomarkers, Universidad de Extremadura, E10003 Cáceres, Spain
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García-Martín E, Pastor P, Gómez-Tabales J, Alonso-Navarro H, Alvarez I, Buongiorno M, Cerezo-Arias MDLO, Aguilar M, Agúndez JAG, Jiménez-Jiménez FJ. Association between LAG3/CD4 gene variants and risk of Parkinson's disease. Eur J Clin Invest 2022; 52:e13847. [PMID: 36224715 PMCID: PMC9787747 DOI: 10.1111/eci.13847] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 07/14/2022] [Accepted: 07/21/2022] [Indexed: 12/30/2022]
Abstract
BACKGROUND/OBJECTIVES Several recent studies suggest a possible role of lymphocyte activation 3 (LAG3) protein. LAG3 can behave as an α-synuclein ligand, and serum and cerebrospinal fluid-soluble LAG3 levels have been proposed as a marker of Parkinson's disease (PD). In this study, we aimed to investigate whether there is an association between 3 common single-nucleotide variations (SNVs) in the LAG3 gene and its closely related CD4 molecule gene and the risk of PD in a Caucasian Spanish population. Two of them have been previously associated with the risk of PD in Chinese females. METHODS We analysed genotypes and allele frequencies for CD4 rs1922452, CD4 951818 and LAG3 rs870849 SNVs, by using specifically designed TaqMan assays, in a cohort composed of 629 PD patients and 865 age- and gender-matched healthy controls. RESULTS The frequencies of the CD4 rs1922452 A/A genotype, according to the dominant and recessive genetic models, and of the CD4 rs1922452/A allelic variant were significantly lower, and the frequencies of the CD4 rs951818 A/A genotype, according to the dominant genetic model, and of the CD4 rs951818/A allele, were significantly higher in PD patients than in controls. The differences were not significant after stratifying by sex. These two SNVs showed strong linkage. Regression models showed a lack of relation between the 3 SNVs studied and the age at onset of PD. CONCLUSIONS These data suggest a possible role of CD4 rs1922452 and CD4 rs951818 polymorphisms in the risk of PD.
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Affiliation(s)
- Elena García-Martín
- University Institute of Molecular Pathology Biomarkers, Universidad de Extremadura, ARADyAL, Cáceres, Spain
| | - Pau Pastor
- Fundació per la Recerca Biomèdica i Social Mútua de Terrassa, Terrassa, Spain.,Movement Disorders Unit, Department of Neurology, University Hospital Mutua de Terrassa, Terrassa, Spain
| | - Javier Gómez-Tabales
- University Institute of Molecular Pathology Biomarkers, Universidad de Extremadura, ARADyAL, Cáceres, Spain
| | | | - Ignacio Alvarez
- Fundació per la Recerca Biomèdica i Social Mútua de Terrassa, Terrassa, Spain.,Movement Disorders Unit, Department of Neurology, University Hospital Mutua de Terrassa, Terrassa, Spain
| | - Mariateresa Buongiorno
- Fundació per la Recerca Biomèdica i Social Mútua de Terrassa, Terrassa, Spain.,Movement Disorders Unit, Department of Neurology, University Hospital Mutua de Terrassa, Terrassa, Spain
| | | | - Miquel Aguilar
- Fundació per la Recerca Biomèdica i Social Mútua de Terrassa, Terrassa, Spain.,Movement Disorders Unit, Department of Neurology, University Hospital Mutua de Terrassa, Terrassa, Spain
| | - José A G Agúndez
- University Institute of Molecular Pathology Biomarkers, Universidad de Extremadura, ARADyAL, Cáceres, Spain
| | - Félix Javier Jiménez-Jiménez
- Section of Neurology, Hospital Universitario del Sureste, Madrid, Spain.,Department of Medicine-Neurology, Hospital 'Príncipe de Asturias', Universidad de Alcalá, Alcalá de Henares, Spain
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IL-7/IL7R axis dysfunction in adults with severe community-acquired pneumonia (CAP): a cross-sectional study. Sci Rep 2022; 12:13145. [PMID: 35907923 PMCID: PMC9339003 DOI: 10.1038/s41598-022-13063-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 04/08/2022] [Indexed: 11/24/2022] Open
Abstract
Community-acquired pneumonia (CAP) is a worldwide leading cause of death. Recognized risk factors in some severe cases have not been identified. Lymphocytopenia has been frequently described in CAP. Since IL-7, membrane-bound receptor (IL7Rα;CD127) and soluble IL7Rα (sIL7R) are critical in lymphocytes homeostasis, in this work we aimed to evaluate the involvement of the IL-7/IL7Rα axis in the severity of adult CAP, since it has not been explored. The IL7Rα SNPs rs6897932, rs987106, and rs3194051 SNPs in IL7α were genotyped, the systemic expression of the IL7R gene, sIL7R, IL-7, and levels of peripheral IL7Rα+ T lymphocytes were quantified in 202 hospitalized CAP cases. rs3194051GG was more frequent in non-survivors than in survivors; rs987106TT was more frequent and rs3194051AA less frequent in patients at intensive care unit (ICU) than in those not admitted to ICU. IL7Rα gene expression was lower in non-survivors than in survivors, and in severe than in mild cases. CD3+CD127+ lymphocytes were lower in severe than in mild cases; in non-survivors than in survivors and in ICU than in non- ICU admitted cases. sIL7Rα plasmatic levels were higher in non-survivors than in survivors, and in severe than in mild cases. rs6897932CC, rs987106AA and rs3194051GG carriers showed the highest while rs6897932TT showed the lowest sIL7Rα levels. The AUC of sIL7Rα levels predicting 30-day mortality was 0.71. Plasma IL-7 levels were lower in ICU-admitted than in not ICU-admitted and in non-survivors than in survivors. No additional association was detected. In conclusion, rs3194051GG and rs987106TT IL7R genotypes were associated with a poorer prognosis. A significant association between sIL7R levels and SNPs of the IL7R gene is described for the first time in adult CAP. Increased plasmatic sIL7R could contribute to identifying adult CAP cases at risk of death.
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Expression and clinical significance of IL7R, NFATc2, and RNF213 in familial and sporadic multiple sclerosis. Sci Rep 2021; 11:19260. [PMID: 34584155 PMCID: PMC8478940 DOI: 10.1038/s41598-021-98691-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 09/01/2021] [Indexed: 02/08/2023] Open
Abstract
Multiple sclerosis (MS) is a chronic inflammatory and autoimmune disorder of the central nervous system characterized by myelin loss and axonal dysfunction. Increased production of inflammatory factors such as cytokines has been implicated in axon destruction. In the present study, we compared the expression level of IL7R, NFATc2, and RNF213 genes in the peripheral blood of 72 MS patients (37 familial MS, 35 sporadic MS) and 74 healthy controls (34 individuals with a family history of the disease, 40 healthy controls without a family history) via Real-time PCR. Our results showed that the expression level of IL7R was decreased in the sporadic patients in comparison with other groups. Additionally, there was an increased NFATc2 expression level in MS patients versus healthy controls. Increased expression of NFATc2 in sporadic and familial groups compared to the controls, and familial group versus FDR was also seen. Our results also represented an increased expression level of RNF213 in familial patients as compared to the control group. The similar RNF213 expression between sporadic and control group, as well as FDR and familial group was also seen. Diagnostic evaluation was performed by receiver operating characteristic (ROC) curve analysis and area under the curve (AUC) calculation. The correlation of clinical parameters including onset age and Expanded Disability Status Scale (EDSS) with our gene expression levels were also assessed. Overall, decreased expression level of IL7R in the sporadic cases and increased expression level of NFATc2 may be associated with the pathogenesis of MS disease. Confirmation of the effects of differential expression of RNF213 gene requires further studies in the wider statistical populations.
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Al-Eitan L, Al Qudah M, Al Qawasmeh M. Candidate gene association analysis of multiple sclerosis in the Jordanian Arab population: A case-control study. Gene 2020; 758:144959. [PMID: 32683075 DOI: 10.1016/j.gene.2020.144959] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 06/12/2020] [Accepted: 07/13/2020] [Indexed: 01/21/2023]
Abstract
Multiple sclerosis (MS) is a clinically heterogeneous multifactorial disorder which is one of the most prevalent neurological disorders of females and young people. Both genetic and environmental factors are playing an important role in the pathophysiology of MS. The main objective of this study is to identify the relationship between numbers of genetic variants within different candidate genes (IL7R, LAG3, and CD40) and the risk of developing MS in the Jordanian Arab population. This case-control study consists of 218 MS patients chosen from neurology clinics at different hospitals in Jordan and ethnically matched 227 healthy controls. Genomic DNA was extracted from blood samples. Genotyping of the candidate gene polymorphisms was conducted using the Sequenom MassARRAY system. Statistical analysis was performed to identify the genetic association of the studied SNPs with MS. Twenty-one variants were studied, three of them were found to be associated with MS (rs6897932 (P-value = 0.01) and rs13188960 (P-value = 0.005) within IL7R gene and LAG3 rs2365095, (P-value = 0.03) within LAG3 gene). Moreover, no significant association was found between MS and the genetic polymorphisms of the CD40 gene. After correction for multiple comparisons, only rs13188960 SNP remained significantly with MS. This is the first study of the genetic association with MS in the Jordanian Arab population to provided evidence of the genetic association of IL7R (rs6897932, rs13188960) and LAG3 (rs2365095) gene polymorphisms with MS. These findings may contribute to our understanding of MS and optimize the therapy protocol for individuals.
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Affiliation(s)
- Laith Al-Eitan
- Department of Applied Biological Sciences, Jordan University of Science and Technology, Irbid 22110, Jordan; Department of Biotechnology and Genetic Engineering, Jordan University of Science and Technology, Irbid 22110, Jordan.
| | - Malak Al Qudah
- Department of Applied Biological Sciences, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Majdi Al Qawasmeh
- Department of Neuroscience, Division of Neurology, Faculty of Medicine, Jordan University of Science and Technology, 22110, Jordan
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AL-Eitan LN, Al-Maqableh HW, Mohammad NN, Khair Hakooz NM, Dajani RB. Genetic Analysis of Pharmacogenomic VIP Variants of ABCB1, VDR and TPMT Genes in an Ethnically Isolated Population from the North Caucasus Living in Jordan. Curr Drug Metab 2020; 21:307-317. [DOI: 10.2174/1389200221666200505081139] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 03/26/2020] [Accepted: 03/30/2020] [Indexed: 01/11/2023]
Abstract
Background:
Differences in individual responses to the same medications remarkably differ among
populations. A number of genes that play integral roles in drug responses have been designated as very important
pharmacogenes (VIP), as they are responsible for differences in drug safety, efficacy, and adverse drug reactions
among certain ethnic groups. Identifying the polymorphic distribution of VIP in a range of ethnic groups will be
conducive to population-based personalized medicine.
Objective:
The aim of the current study is to identify the polymorphic distribution of VIP regarding the Chechen
minority group from Jordan and compare their allele frequencies with other populations.
Methods:
A total of 131 unrelated Chechen individuals from Jordan were randomly recruited for blood collection.
Identification of allelic and genotypic frequencies of eleven VIP variants within the genes of interest (ABCB1, VDR
and TPMT) was carried out by means of the MassARRAY®System (iPLEX GOLD).
Results:
Within ABCB1, we found that the minor allele frequencies of the rs1128503 (A: 0.43), rs2032582 (A: 0.43),
rs1045642 (A: 0.43). For VDR, the minor allele frequencies of rs11568820 (T: 0.18), rs1540339 (T: 0.30), rs1544410
(T: 0.41), rs2228570 (T: 0.24), rs3782905 (C: 0.28) and rs7975232 (C: 0.45). Finally, the minor allele frequencies for
the TPMT rs1142345 and rs1800460 polymorphisms were found to be (C: 0.02) and (T: 0.01), respectively.
Conclusion:
Significant differences in allelic frequencies of eleven ABCB1, VDR and TPMT VIP variants were
found between Jordanian Chechens and other populations. In our study, most populations that are similar to
Chechens are those from South Asian, European (Finnish) and European, including: Utah residents with Northern
and Western European ancestry, Toscani in Italia, Mexican ancestry in Los Angeles and Circassian from Jordan. The
level of similarity between Chechens and those populations means that they might have shared high levels of gene
flow in the past. The results obtained in this study will contribute to the worldwide pharmacogenomic databases and
provide valuable information for future studies and better individualized treatments.
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Affiliation(s)
- Laith Naser AL-Eitan
- Department of Applied Biological Sciences, Jordan University of Science and Technology, Irbid 22110, Jordan
| | | | - Namarg Nawwaf Mohammad
- Department of Applied Biological Sciences, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Nancy Mohamed Khair Hakooz
- Department of Biopharmaceutics and Clinical Pharmacy, School of Pharmacy, University of Jordan, Amman 11942, Jordan
| | - Rana Basem Dajani
- Department of Biology and Biotechnology, Hashemite University, Zarqa 13133, Jordan
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