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Abstract
BACKGROUND Behçet disease (BD) belongs to a disease family that has a transparent borderline between autoinflammatory and autoimmune disorders. Fas and some miRNAs have revealed to display remarkable roles in both autoimmune and autoinflammatory processes, and they can play important roles in defective apoptosis in BD. We investigated the association of the susceptibility of BD with Fas, miRNA variations, and their both single and combined presence in a Turkish population as a case-control study. METHODS The distributions of FAS-670 A>G rs1800682, mir146a rs2910164, and mir196a rs11614913 polymorphisms are analyzed with the polymerase chain reaction-restriction fragment length polymorphism method in 115 BD patients and 220 controls in 6-month period. RESULTS Statistical analysis indicates that in the case of Fas-670 A/G rs1800682, AA genotype and A allele have a protective role in BD (p = 0.0004 and p = 0.0009, respectively). The dominant model (AA + AG/GG) also displays a protective effect on BD unlike the recessive model (p = 0.03). In addition, both homozygous genotype (CC) of rs2910164 of mir-146a (p = 0.04) and the dominant model (CC + CG vs. GG) have protective effects on BD unlike the recessive model (p < 0.0001). Both mir-196a2 rs1800682 polymorphism and combined genotype analysis of rs1800682-rs2910164 and rs1800682-rs11614913 gave no statistically significant differences within the groups for genotypes and either of the alleles (p > 0.05). CONCLUSIONS These findings indicate that both Fas rs1800682 and mir-146a rs2910164 variants might be important factors participating in the protection against BD in the Turkish population.
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Affiliation(s)
- Guven Yenmis
- From the Department of Medical Biology and Genetics, Faculty of Medicine, Biruni University
| | - Tugba Soydas
- Department of Medical Biology and Genetics, Faculty of Medicine, Istanbul Aydin University
| | | | | | - Ozlem Su Kucuk
- Dermato-Venereology of Bezmialem Vakif University Hospital, Bezmialem Vakif University, Istanbul, Turkey
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Yenmis G, Yaprak Sarac E, Besli N, Soydas T, Tastan C, Dilek Kancagi D, Yilanci M, Senol K, Karagulle OO, Ekmekci CG, Ovali E, Tuncdemir M, Ulutin T, Kanigur Sultuybek G. Anti-cancer effect of metformin on the metastasis and invasion of primary breast cancer cells through mediating NF-kB activity. Acta Histochem 2021; 123:151709. [PMID: 33711726 DOI: 10.1016/j.acthis.2021.151709] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 02/27/2021] [Accepted: 03/02/2021] [Indexed: 12/17/2022]
Abstract
Current evidence strongly suggests that aberrant activation of the nuclear factor kappa B (NF-kB) signaling cascade is connected to carcinogenesis. The matrix metalloproteinases (MMP) which are also the key agents for tumor metastasis may be potent candidates for tumor diagnosis in clinics. In this in vitro study, we hypothesized that metformin with an effective dose can inhibit tumor cell proliferation and metastasis by modulating the expressions of MMP-2 and -9 and interfering with NF-kB signaling in primary breast cancer cells (PBCCs). 300 000 cells per ml were obtained from biopsies of breast tumors from five human donors. The cell viability and proliferation were tested. Immunocytochemistry was performed for MMP-2, MMP-9, and NF-kB, and enzyme-linked immunosorbent assay for NF-kB activity, quantitative real-time PCR for RELA/p65, IkBα, MMP-2, and MMP-9. Three different doses of metformin (5, 10, and 25 mM) (Met) reduced the viability and proliferation of PBCCs in a dose-dependent manner, maximum inhibition was observed at 25 mM Met. The expression of RELA/p65 was not affected by 25 mM Met. Nuclear immunoreactivity and activity of NF-kB reduced while cytoplasmic NF-kB (p65) elevated by 25 mM Met compared to non-treatment (P < 0.05). The expression and immunoreactivity of MMP-9 but not MMP-2 were decreased by 25 mM Met treatment, compared with the non-treatment (P < 0.05). Metformin may have an essential antitumor role in the invasion and metastasis pathways of PBCCs by downregulating the MMP-9 expression blocking both the activity and nuclear translocation of NF-kB.
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Bengur FB, Ekmekci CG, Karaarslan E, Gunoz H, Alanay Y. p.Ser348Cys mutation in FGFR3 gene leads to "Mild ACH /Severe HCH" phenotype. Eur J Med Genet 2019; 63:103659. [PMID: 31048079 DOI: 10.1016/j.ejmg.2019.04.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 04/07/2019] [Accepted: 04/28/2019] [Indexed: 11/30/2022]
Abstract
Achondroplasia (ACH) and hypochondroplasia (HCH) are genetic bone disorders known to be caused by gain-of-function mutations in the fibroblast growth factor receptor 3 (FGFR3) gene. Both conditions share radiographic and phenotypical features. HCH is a milder form of ACH. Most individuals with ACH have the recurrent mutation (p.Gly380Arg) in the transmembrane (TM) domain of the receptor and individuals with HCH show the common mutation (p.Asn540Lys) in the tyrosine kinase 1 (TK1) region. Other rare mutations have been reported, however no additional hot-spot has been identified. We report an 8-month-old infant, with the heterozygous mutation, c.1043C > G, leading to an amino acid change from serine at 348 to cysteine (p.Ser348Cys). Clinical diagnosis of the patient is intertwined with "mild ACH" or "severe HCH". He did not demonstrate acanthosis nigricans (AN). This mutation has been reported in two different patients and it is located in the Ig-III domain of the FGFR3 region near other mutations associated with ACH. Among the two the 8-year old one also demonstrated AN without evindece of hyperinsulinem. This report emphasizes the benefit of whole gene sequencing for FGFR3 in individuals with suspected "mild ACH/severe HCH". This child will be monitored for future occurrence of AN.
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Affiliation(s)
- Fuat Baris Bengur
- Acibadem Mehmet Ali Aydinlar University School of Medicine, Istanbul, Turkey
| | | | - Ercan Karaarslan
- Acibadem Mehmet Ali Aydinlar University School of Medicine, Department of Radiology, Istanbul, Turkey
| | - Hulya Gunoz
- Istanbul University Faculty of Medicine, Growth-Development and Pediatric Endocrinology Unit, Istanbul, Turkey
| | - Yasemin Alanay
- Acibadem Mehmet Ali Aydinlar University School of Medicine, Department of Pediatrics, Pediatric Genetics Unit, Istanbul, Turkey.
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Colak Y, Coskunpinar EM, Senates E, Oltulu YM, Yaylim I, Gomleksiz OK, Ozan Tiryakioglu N, Hasturk B, Ekmekci CG, Aydogan HY. Assessment of the rs2645424 C/T single nucleotide polymorphisms in the FDFT1 gene, hepatic expression, and serum concentration of the FDFT in patients with nonalcoholic fatty liver disease. Meta Gene 2018. [DOI: 10.1016/j.mgene.2018.07.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Ekmekci CG, Coskunpinar E, Avci H, Farooqi AA, Orhan KS, Akbas F. Integrative analysis of mRNA and microRNA expression profiles in laryngeal squamous cell carcinoma. J Cell Biochem 2018; 120:3415-3422. [PMID: 30362598 DOI: 10.1002/jcb.27612] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 08/09/2018] [Indexed: 12/12/2022]
Abstract
Larynx cancer is a therapeutically challenging disease. Rapidly evolving experimentally validated data have significantly improved our understanding of the complex role of numerous RNA, DNA, and proteins that play a role in the development and progression of cancer. Based on the insights from approximately two decades of research, it seems clear that microRNAs (miRNAs) have revolutionized our concepts related to the main role of noncoding RNAs in different cancers' progression, development, and metastasis. Mechanistically, miRNAs have been reported to regulate different RNAs and finally protein-coding genes. The expression profiling of miRNAs and messenger RNA (mRNAs) was conducted for a deeper analysis of the miRNAs and mRNAs which play an essential role in larynx cancer. Downregulation or upregulation over twofolds in the miRNAs was considered to be significant, and that of sixfolds or below was considered to be significant for the mRNAs. In accordance with this approach, the expression levels of 43 miRNAs were increased in this study, whereas the expression levels of 129 were decreased. Accordingly, all the genomic expression studies provided evidence of upregulation of 97 genes, whereas 128 genes were found to be downregulated. Among these miRNAs, hsa-miR-20a-3p and hsa-miR-1972 were noted to be important in the etiology of larynx cancer.
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Affiliation(s)
| | - Ender Coskunpinar
- Department of Medical Biology, Faculty of Medicine, University of Health Sciences, Istanbul, Turkey
| | - Hakan Avci
- Department of Otolaryngology and Head and Neck Surgery, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Ammad Ahmad Farooqi
- Laboratory for Translational Oncology and Personalized Medicine, Rashid Latif Medical College, Lahore, Pakistan
| | - Kadir Serkan Orhan
- Department of Otolaryngology and Head and Neck Surgery, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Fahri Akbas
- Department of Medical Biology, Faculty of Medicine, Bezmialem Vakıf University, Istanbul, Turkey
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Altinoz MA, Elmaci I, Bolukbasi FH, Ekmekci CG, Yenmis G, Sari R, Sav A. MGMT gene variants, temozolomide myelotoxicity and glioma risk. A concise literature survey including an illustrative case. J Chemother 2017; 29:238-244. [PMID: 28436299 DOI: 10.1080/1120009x.2017.1312752] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Temozolomide may cause thrombocytopenia or neutropenia in 3-4% of glioblastoma patients, respectively. However, pancytopenia is rarely reported. MGMT (O6-methylguanine-DNA-methyltransferase) enzyme repairs temozolomide-induced DNA mutations and associates both with antitumour efficacy and myelosuppression. Many studies on the effects of MGMT gene-methylation on temozolomide's effects exist, but much fewer publications concerning MGMT variants were documented. A full sequencing of the MGMT gene was performed in a female glioblastoma patient, who developed pancytopenia following temozolomide treatment. Results indicated the presence of all the rs2308321 (I143 V), rs2308327 (K178R) and rs12917 (L84F) MGMT-variants, which were previously associated with temozolomide myelotoxicity. rs12917 (L84F) variant was reported as associating with lesser risk of gallbladder tumours, yet with higher risk of non-Hodgkin lymphomas related with exposure to chlorinated solvents or hair dyes. DNA repair proteins may exert diverging effects on DNA injuries caused by different chemicals and therefore exerting complex effects on myelotoxicity, antitumour activity and carcinogenesis.
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Affiliation(s)
| | - Ilhan Elmaci
- a Neuroacademy Group , Istanbul , Turkey.,b Department of Neurosurgery , Memorial Hospital , Istanbul , Turkey
| | - Fatih Han Bolukbasi
- a Neuroacademy Group , Istanbul , Turkey.,b Department of Neurosurgery , Memorial Hospital , Istanbul , Turkey
| | | | - Guven Yenmis
- c Department of Genetics , Acibadem University , Istanbul , Turkey
| | - Ramazan Sari
- d Department of Neurosurgery , Hizmet Hastanesi , Istanbul , Turkey
| | - Aydin Sav
- e Nisantasi Pathology Group , Istanbul , Turkey
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Ozden M, Katar S, Hanimoglu H, Ulu MO, Isler C, Baran O, Antar V, Ekmekci CG, Kaynar MY. Polymorphisms in the Matrix Metalloproteinase-9 Promoters and Susceptibility to Glial Tumors in Turkey. Turk Neurosurg 2016; 27:690-695. [PMID: 27943225 DOI: 10.5137/1019-5149.jtn.17960-16.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
AIM Evidence suggests an association between MMP-9 functional gene polymorphisms and several tumors. The aim of this study was to investigate the possible role of single-nucleotide polymorphisms (SNP) at MMP-9 R279Q A/G, P574R G/C and R668Q G/A and R668Q (rs17577) genotypes with glial tumors in Turkey. MATERIAL AND METHODS The present series consisted of tissue samples obtained from 100 cancer-free controls and 100 patients who had undergone glial tumor resection from 2007 to 2011 at the Cerrahpasa Medical Faculty of Istanbul University. Blood samples were collected to extract the genomic deoxyribonucleic acid (DNA) of each subject by polymerase chain reaction (PCR) and DNA sequencing. The genotypes of MMP-9 P574R, R279Q and R668Q SNPs were determined by using the PCR-RFLP assay. Genotypic distributions between patient and control groups were compared for correlations with glial tumor occurrence. RESULTS SNPs in MMP-9 were not found to be significantly associated with glial tumor risk among participants except R279Q (G-G) which showed high risk only in multivariate analysis (OR adjusted, 3.15 95% CI, 1.10-9.01). The comparisons between the grade of tumor and the genotypic polymorphisms also showed no significant associations in the case group (all p values > 0.05). CONCLUSION The current study showed a significant association between the R279Q G/G polymorphism and formation of glial tumor in advanced age. Changed protein features may cause triggering of some subcellular mechanisms that may have a role in activating oncogenic processes over the years. These data add to the growing epidemiological and experimental evidence that MMP-9 may play a role in glial tumors.
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Affiliation(s)
- Mahmut Ozden
- Florence Nightingale Hospital, Neurosurgery Clinic, Istanbul, Turkey
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Kahraman S, Beyazyurek C, Ekmekci CG. Seven years of experience of preimplantation HLA typing: a clinical overview of 327 cycles. Reprod Biomed Online 2011; 23:363-71. [PMID: 21782513 DOI: 10.1016/j.rbmo.2011.05.016] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2010] [Revised: 04/29/2011] [Accepted: 05/11/2011] [Indexed: 02/09/2023]
Abstract
Preimplantation human leukocyte antigen (HLA) typing allows the birth of healthy children who are potential donors of stem cells for their affected siblings. This technique can be used for acquired diseases such as leukaemia or can be used for single-gene disorders such as thalassaemia. This retrospective study presents clinical data obtained from 171 couples who had undergone 327 preimplantation HLA typing cycles: 262 cycles for HLA typing in combination with mutation analysis and 65 cycles for the sole purpose of HLA typing. Of the diagnosed embryos 17.6% were found to be HLA matched. Embryo transfer was performed in 212 cycles, 34.9% clinical pregnancy rate per transfer was achieved and 59 healthy and HLA-compatible children were born. Twenty-one sick children have been cured through haemopoietic stem cell transplantation. The effect of maternal age and ovarian reserve on reproductive outcome was assessed retrospectively. The data demonstrated that, once a mutation-free and HLA-compatible embryo was found, clinical pregnancy rate did not differ statistically significantly despite the presence of some cycle-related limitations such as advanced maternal age and/or diminished ovarian reserve. Preimplantation HLA typing is an effective therapeutic tool for curing an affected sibling even for poor-prognosis patients. Preimplantation human leukocyte antigent (HLA) typing allows the birth of healthy children who are potential donors of stem cells for their affected siblings. This technique can be used for acquired diseases such as leukaemia or can be used for single-gene disorders such as thalassaemia. This study presents clinical data obtained from 171 couples who underwent 327 preimplantation HLA-typing cycles. Of these, 262 cycles were performed for HLA typing in combination with mutation analysis and 65 cycles were performed for the sole purpose of HLA typing. A total of 17.6% of the diagnosed embryos were found to be HLA matched. Embryo transfer was performed in 212 cycles. The clinical pregnancy rate per transfer was 34.9% and 59 healthy and HLA compatible children were born. Twenty-one sick children have been cured through haemopoietic stem cell transplantation. The effect of maternal age and ovarian reserve on reproductive outcome was assessed retrospectively. The data demonstrated that, once a mutation-free and HLA-compatible embryo was found, clinical pregnancy rates did not differ statistically significantly by the presence of some cycle-related limitations such as advanced maternal age and/or diminished ovarian reserve. Preimplantation HLA typing is an effective therapeutic tool for curing an affected sibling even for poor-prognosis patients.
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Affiliation(s)
- Semra Kahraman
- In Vitro Fertilisation Unit, Istanbul Memorial Hospital, Piyalepasa Bulvari, Sisli, Istanbul, Turkey
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Cinar C, Beyazyurek C, Ekmekci CG, Aslan C, Kahraman S. Sperm fluorescence in situ hybridization analysis reveals normal sperm cells for 14;14 homologous male Robertsonian translocation carrier. Fertil Steril 2011; 95:289.e5-9. [DOI: 10.1016/j.fertnstert.2010.05.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2010] [Revised: 04/23/2010] [Accepted: 05/10/2010] [Indexed: 11/25/2022]
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Beyazyurek C, Ekmekci CG, Sağlam Y, Cinar C, Kahraman S. Preimplantation genetic diagnosis (PGD) for extremes--successful birth after PGD for a consanguineous couple carrying an identical balanced reciprocal translocation. Fertil Steril 2010; 93:2413.e1-5. [PMID: 20117768 DOI: 10.1016/j.fertnstert.2009.12.032] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2009] [Revised: 12/07/2009] [Accepted: 12/10/2009] [Indexed: 10/19/2022]
Abstract
OBJECTIVE To report a healthy birth after preimplantation genetic diagnosis (PGD) performed for a consanguineous couple carrying an identical familial reciprocal translocation in both partners. DESIGN Case report. SETTING In vitro fertilization (IVF) clinic and genetic laboratory in a private hospital. PATIENT(S) Consanguineous couple carrying the same balanced reciprocal translocation: 46,XX,t(1;16)(q12;q11.2) and 46,XY,t(1;16)(q12;q11.2). INTERVENTION(S) 25 oocyte-cumulus complexes were retrieved 36 hours after human chorionic gonadotropin injection; metaphase II oocytes were fertilized by intracytoplasmic sperm injection; single blastomere biopsy was performed on 15 embryos on day 3; one embryo was found to be normal or balanced according to fluorescent in situ hybridization studies, embryo transfer was performed on day 4. MAIN OUTCOME MEASURE(S) Healthy birth of homozygous double translocation carrier twins with 46,XY,t(1;16)(q12;q11.2)mat,t(1;16)(q12;q11.2)pat karyotype. RESULT(S) Healthy monozygotic male twins were born at 36 weeks of gestation. Karyotype studies of the babies revealed that they are double translocation homozygotes: 46,XY,t(1;16)(q12;q11.2)mat,t(1;16)(q12;q11.2)pat. They are healthy and more than 4 years old later show no physical or mental abnormalities. CONCLUSION(S) To our knowledge, this is the first PGD study performed for a couple who carry the same reciprocal translocation. The twins born after this study are rare examples in the literature of healthy balanced reciprocal translocation homozygotes.
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Affiliation(s)
- Cagri Beyazyurek
- Reproductive Genetics Laboratory, Istanbul Memorial Hospital, 34385 Sisli, Istanbul, Turkey.
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Onal B, Çinar C, Beyazyurek C, Milik S, Cengiz F, Selimoglu S, Ekmekci CG, Kilinc C, Kahraman S. Results of sperm FISH analysis on poor-prognosis patients referred for assisted reproduction. Reprod Biomed Online 2009. [DOI: 10.1016/s1472-6483(10)61252-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Beyazyurek C, Çinar C, Onal B, Ekmekci CG, Aslan C, Unal S, Altin G, Yelke H, Karlikaya G, Karagozoglu H, Kilinc C, Kahraman S. Outcomes of over 200 PGD cycles for translocation carriers. Reprod Biomed Online 2009. [DOI: 10.1016/s1472-6483(10)61224-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Çinar C, Beyazyurek C, Onal B, Ekmekci CG, Karlikaya G, Karagozoglu H, Kavrut M, Unal S, Altin G, Yelke H, Kilinc C, Kahraman S. Chromosomal abnormalities in preimplantation embryos derived from assisted reproduction techniques. Reprod Biomed Online 2009. [DOI: 10.1016/s1472-6483(10)61233-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Ekmekci CG, Beyazyurek C, Tac HA, Ajradin N, Verlinsky O, Fiorentino F, Karagozoglu H, Karlikaya G, Kahraman S. Seven years of experience on preimplantation HLA typing. Reprod Biomed Online 2009. [DOI: 10.1016/s1472-6483(10)61219-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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