Investigation of survivin gene polymorphism in patients with gastric carcinoma

Objectives: Despite decreasing incidence of gastric cancerin worldwide, it is still a major health problem. Everyyear, 30.000 new gastric cancer cases emerging, and itis the second most common cancer in Turkey. Gastriccancer is a complex multifactorial disease, emerging byinteraction between genetic and environmental factors.Survivin, apoptosis inhibitory protein is over-expressed incancer tissue. In this study, association between Survivin-31G/C polymorphism and gastric carcinoma was investigated.Materials and Methods: 46 gastric carcinoma patientswho had been admitted at Düzce University Researchand Practice Hospital, Laboratory of Pathology and 42healthy individuals have been included in the study. Sampleshave been subjected to genetic analysis by PCRRFLPmethod in Medical Genetics Department laboratoryat Düzce University.Results: GG genotype was found in 16 (34.8%), GCgenotype in 21 (45.7%), CC genotype in 9 (19.6%) in patientgroup. In control group, genotype distribution werefound 13 (31%), 26 (61.9%) and 3 (7.1%) respectively.The statistically significant difference was not found whencompared between patient and control groups. However,we observed the increased occurrence of gastric cancerassociated with CC genotype (OR=1.52).Conclusions: In our knowledge, this study is the first toevaluate the relationship between gastric carcinoma andSurvivin -31G/C polymorphism in Turkish population. Ourresults show that there is no any association betweengastric carcinoma and Survivin -31G/C polymorphismin the community which is represented by our study andcontrol groups. However, it was concluded that CC genotypemay create the susceptibility to gastric cancer.Key words: Polymorphism, gastric carcinoma, survivinggene, apoptosi

Investigation of survivin gene polymorphisms in colon cancer patients

YÖK Tez No: 340811Kolon kanseri dünya çapında görülen en yaygın kanserlerden biridir. Kanserlerin patogenezi hücrelerin çoğalması, farklılaşması ve sağ kalımı gibi genel gereksinimlerin düzenlenmesinde anahtar görev üstlenen genlerin mutasyonlarından etkilenmekte ve hastalık bir seri somatik mutasyonun birbirini izlemesiyle gelişmektedir. Apoptozis ise, hem hücresel homeostazisin devamlılığı hem de hücre çoğalması ve farklılaşmasında çok önemli olan hücre eliminasyonu için gerekli fizyolojik bir işlemdir. Apoptozis, genetik işlergelerle düzenlenmekte ve malign hücrelerde bu işlergelerin denetimi bozulabilmektedir. Bu da kontrolsüz hücre büyümesine ve tümör gelişimine neden olmaktadır. Bu çalışmada apoptozisle ilişkili olan Survivin geninin promotör bölgesindeki -31 G/C, -241 C/T, -625 C/G ve -1547 A/G polimorfizmlerin kolon kanseri ile ilişkisi PCR-RFLP yöntemi kullanılarak incelendi. Yapılan çalışma sonucunda survivin -31C alleli ve CC genotipine sahip bireylerin kolon kanserine yakalanma riskinin yüksek olduğu bulundu. -241 CT genotipinin kolon kanseri riskini önemli derece arttırdığı bulundu (OR=12.0, p=0.0001). -625 C/G polimorfizmi ile kolon kanseri arasında istatistiksel olarak anlamlı bir fark yoktu. Survivin -1547AG genotipi AA' ya göre 3.383 kat daha fazla hastalık riski taşıdığı bulundu (p=0.026). Ayrıca GG genotipine sahip olanlarda da hastalık riski anlamlı düzeyde yüksek bulundu (p<0.05). Anahtar sözcükler: Kanser, Kolon, Polimorfizm, RFLP, SurvivinColon cancer is one of the most common cancer worldwide. Pathogenesis of cancer is affected by mutations of genes which is undertaking the key task such as proliferation of cells, differantiation and survival and disease is developing by tracking a series of mutations in each other. Apoptosis, is a necessary physiological process for cell elimination which is very important both cellular homeostasis and cell proliferation and differantiation. Apoptosis is regulated by genetic mechanisms and control of this mechanisms can be distrupted in malign cells. This also leads to uncontrolled cell growth and tumor development. The relation between colon cancer and -31 G/C, -241 C/T, -625 C/G ve -1547 A/G polymorphism in promotor site of survivin gene associated with apoptosis was investigated by using PCR-RFLP method in this study. As a result of the study, individuals with -31C allele and CC genotype had a higher risk of developing colon cancer. -241 CT genotype was found to increase considerably in the risk of colon cancer (OR=12.0, p=0.0001). There was no statistically significant difference between -625 C/G polymorhism and colon cancer. It was found that Survivin -1547 AG genotype had 3.383 fold higher risk according to AA genotype (p=0.026). In addition, even in those with GG genotype were significantly higher risk of disease (p<0.005)

Investigation of survivin gene polymorphism in patients with gastric carcinoma

Amaç: Dünya genelinde mide kanserinin insidansı düşmesine rağmen hala önemli bir sağlık problemidir. Türkiye’de ise yılda 30.000 yeni mide kanseri vakasıyla 2. en sık görülen kanserdir. Mide kanseri genetik ve çevresel faktörlerin etkileşimiyle ortaya çıkan çok faktörlü karmaşık bir hastalıktır. Kanserli dokuda aşırı ifade edilen survivin, apoptozis inhibe edici proteinlerdendir. Bu çalışmada Survivin -31 G/C polimorfizmi ile mide kanseri arasındaki ilişki araştırıldı. Gereç ve yöntem: Çalışma Düzce Üniversitesi Araştırma ve Uygulama Hastanesi Patoloji Laboratuvarına gelen mide kanseri tanısı konmuş 46 hasta ve sağlıklı bireylerin oluşturduğu 42 kişilik kontrol grubu ile gerçekleştirildi. Bu bireylerin genotipi Düzce Üniversitesi, Tıp Fakültesi, Tıb- bi Genetik Anabilim Dalı Laboratuvarlarında PCR-RFLP yöntemiyle tayin edildi. Bulgular: Hasta grubunda, GG genotipi 16 (% 34,8), GC genotipi 21 (% 45,7) ve CC genotipi ise 9 (% 19,6) olguda saptandı. Kontrol grubunda ise, genotip dağılımı sırasıyla 13 (% 31), 26 (% 61,9) ve 3 (% 7,1) bulundu. Hasta ve kontrol grubu karşılaştırıldığında istatistiksel olarak anlamlı bir fark saptanamadı. Fakat CC genotipine sahip bireylerin mide kanserine yakalanma riskinin GG (OR1,52) daha fazla risk oluşturduğu bulundu. Sonuç: Bu çalışma bildiğimiz kadarıyla Türk toplumunda mide kanseri ile Survivin -31G/C polimorfizmini araştıran ilk çalışmadır. Elde ettiğimiz sonuçlar hasta ve kontrol gruplarımızın temsil ettiği toplum kesitinde mide kanseri ile Survivin -31 G/C polimorfizmi arasında anlamlı bir ilişki olmadığını göstermekle birlikte CC genotipinin mide kanserine yatkınlık oluşturduğu düşünülebilir.Objectives: Despite decreasing incidence of gastric can- cer in worldwide, it is still a major health problem. Every year, 30.000 new gastric cancer cases emerging, and it is the second most common cancer in Turkey. Gastric cancer is a complex multifactorial disease, emerging by interaction between genetic and environmental factors. Survivin, apoptosis inhibitory protein is over-expressed in cancer tissue. In this study, association between Survivin -31G/C polymorphism and gastric carcinoma was inves- tigated. Materials and Methods: 46 gastric carcinoma patients who had been admitted at Düzce University Research and Practice Hospital, Laboratory of Pathology and 42 healthy individuals have been included in the study. Sam- ples have been subjected to genetic analysis by PCR- RFLP method in Medical Genetics Department laboratory at Düzce University. Results: GG genotype was found in 16 (34.8%), GC genotype in 21 (45.7%), CC genotype in 9 (19.6%) in pa- tient group. In control group, genotype distribution were found 13 (31%), 26 (61.9%) and 3 (7.1%) respectively. The statistically significant difference was not found when compared between patient and control groups. However, we observed the increased occurrence of gastric cancer associated with CC genotype (OR1.52). Conclusions: In our knowledge, this study is the first to evaluate the relationship between gastric carcinoma and Survivin -31G/C polymorphism in Turkish population. Our results show that there is no any association between gastric carcinoma and Survivin -31G/C polymorphism in the community which is represented by our study and control groups. However, it was concluded that CC geno- type may create the susceptibility to gastric cancer

Polymorphisms in MMP-2 and TIMP-2 in Turkish patients with prostate cancer

Hatipoglu, Omer Faruk/0000-0002-1012-001X; Yaykasli, Kursat/0000-0001-7550-6370; Kaya, Ertugrul/0000-0003-0081-682XWOS: 000343068800021PubMed: 25539555Aim: Prostate cancer is the most commonly diagnosed malignancy and the second most common cause of cancer deaths in the Western male population. Matrix metalloproteinases (MMPs) and tissue inhibitors of MMPs (TIMPs) modulate the remodeling of the extracellular matrix (ECM). The imbalance between MMPs and TIMPs may lead to an emergence of pathological processes such as cancer. In this study, the association between TIMP-2 (-418 G/C) and MMP-2 (-1306 C/T) polymorphisms and prostate cancer in the Turkish population was investigated. Materials and methods: Sixty-one prostate cancer patients and 46 healthy subjects were included in the study. DNA was isolated from 2 mL of peripheral blood taken from subjects, and genotypes were analyzed by the polymerase chain reaction-restriction fragment length polymorphism method. Results: The TIMP-2 418 (GC) genotype was found in 15 cases (32.6%) in the control group and in 9 cases (14.8%) in the patients group, and statistical significance was determined (P = 0.037, OR = 0.346). The MMP-2 1306 (CT) genotype was found 2.17 times more in the patient group than in the control group (P = 0.149, OR = 2.17). Conclusion: Our results show that the TIMP-2 418 (GC) genotype had a putative protective effect against prostate cancer.Duzce University Research FundDuzce University [2012.04.02.107]This project was supported by the Duzce University Research Fund, Project Number 2012.04.02.107

Association Between Survivin Gene Polymorphisms and the Susceptibility to Colon Cancer Development in the Turkish Population

Ankarali, Handan Camdeviren/0000-0002-3613-0523; Yaykasli, Kursat/0000-0001-7550-6370WOS: 000351055100074PubMed: 25374237Background: Colon cancer is one of the most common cancers worldwide. Apoptosis is a necessary physiological process for cell elimination which is very important both cellular homeostasis and cell proliferation and differantiation. Dysregulation can lead to uncontrolled cell growth and tumor development. Survivin, a member of the IAP family, plays a key role in promotion of cell proliferation as well as inhibition of apoptosis in cancer cells. The aim of this study was to investigate whether specific genetic polymorphisms of survivin could be associated with colon cancer development and progression in a Turkish population. Our study is the first to our knowledge to investigate the relationship between colon cancer risk and survivin gene polymorphisms. Materials and Methods: The relation between colon cancer and survivin -31 G/C (rs9904341), -241 C/T (rs17878467) and -625 C/G (rs8073069) polymorphism in promotor site of survivin gene associated with apoptosis was investigated using the polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method. Results: Individuals with -31C allele and CC genotype were found to have a higher risk of developing colon cancer (OR=13.4, p=0.01). The -241 CT genotype considerably increased the risk of colon cancer (OR=12.0, p=0.0001). However, there was no significant varaition of the survivin -625 C/G polymorphism among colon cancer patients and controls in our study. Conclusions: This study provides the first evidence that survivin -31 G/C and -241 C/T SNP significantly contribute to the risk of colon cancer in the Turkish population