اهمیت پیش‌آگهی پلی‌مورفیسم ژن ترمیم DNA (Gln399Arg XRCC1) در بیماران مبتلا به سرطان ریه در جمعیت استان فارس

نوع مقاله : مقاله های پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد ژنتیک، گروه سلولی و مولکولی، دانشکده‌ی علوم زیستی، دانشگاه خوارزمی، تهران، ایران

2 استادیار، گروه سلولی و مولکولی، دانشکده علوم زیستی، دانشگاه خوارزمی، تهران، ایران

3 استاد، مرکز تحقیقات سرطان، دانشگاه علوم پزشکی شیراز، شیراز، ایران

چکیده

مقدمه: پلی‌مورفیسم ژنتیکی در ژن‌های درگیر در ترمیم DNA ممکن است با کاهش ظرفیت ترمیمی محصولات این ژن‌ها، سبب افزایش خطر ابتلا به سرطان‌های مختلف در انسان شود. ژن XRCC1 یکی از ژن‌های مهم در ترمیم DNA می‌باشد. در این مطالعه، پلی‌مورفیسم Gln399Arg در ژن XRCC1 و ارتباط آن با استعداد ابتلا به سرطان ریه در جمعیت استان فارس مورد بررسی قرار گرفت.روش‌ها: در این مطالعه‌ی مورد- شاهدی، DNA استخراج شده از 100 فرد سالم و 100 فرد مبتلا به سرطان ریه از نوع Non-small cell lung cancer (NSCLC) به منظور تعیین همبستگی تأثیر پلی‌مورفیسم Gln399Arg ژن XRCC1 بر سرطان ریه، در جمعیت استان فارس مورد بررسی قرار گرفت. برای تعیین ژنوتیپ افراد از تکنیک Amplification refractory mutation system-polymerase chain reaction (ARMS-PCR) استفاده شد.یافته‌ها: افراد مذکر حامل ژنوتیپ Gln/Gln به میزان 5/8 برابر بیشتر در گروه مردان مبتلا به سرطان ریه بودند (044/0 = P). به علاوه، درصد مردانی که دارای باز G در محل این پلی‌مورفیسم بودند (افراد GG و AG)، در گروه بیمار کمتر بود (014/0 = P). دسته‌بندی داده‌ها بر اساس سن بیشتر و کمتر از 55 سال نیز تفاوت معنی‌داری را بین دو گروه سالم و بیمار نشان نداد.نتیجه‌گیری: با وجود فقدان تأثیر پلی‌مورفیسم Gln399Arg XRCC1 بر استعداد ابتلا به سرطان ریه در کل نمونه‌ها، در بین مردان وجود ژنوتیپ Gln/Gln سبب افزایش قابل ملاحظه‌ای در استعداد ابتلا به سرطان ریه شده است. بنابراین، از این ژنوتیپ می‌توان به عنوان یک نشانگر زیستی برای افراد مذکر استفاده کرد.

کلیدواژه‌ها


عنوان مقاله [English]

Prognostic Importance of Polymorphisms in DNA-Repair Gene (XRCC1 Arg399Gln) in Patients with Lung Cancer in Fars Province, Iran

نویسندگان [English]

  • Fahimeh Hamedi 1
  • Mohammad Tahmaseb 2
  • Abbas Ghadri 3
1 MSc Student, Department of Cellular and Molecular Biology, School of Biological Sciences, Kharazmi University, Tehran, Iran
2 Assistant Professor, Department of Cell and Molecular Sciences, School of Biological Sciences, Kharazmi University, Tehran, Iran
3 Professor, Institute for Cancer Research, Shiraz University of Medical Sciences, Shiraz, Iran
چکیده [English]

Background: Genetic polymorphisms in DNA-repair genes may increase the risk of developing cancer due to reducing the DNA-repair capacity. XRCC1 is one of the important genes in DNA repair. This study was designed to examine the polymorphisms associated with XRCC1 Arg399Gln and to investigate its role as susceptibility marker for non-small cell lung cancer (NSCLC) in population of Fars province, Iran.Methods: In this case-control study, extracted DNA from 100 healthy controls and 100 patient of lung cancer were used to examine the role of XCRR1 Arg399Gln polymorphism in context of non-small cell lung cancer in population of Fars province in Iran. Amplification-refractory mutation system-polymerase chain reaction (ARMS-PCR) technique was used for determining of individuals’ genotyping.Findings: Our data showed a strong association between Gln/Gln (A/A) genotype and risk of developing non-small cell lung cancer in men. Moreover, men with at least one A allele (AA+ AG) showed reduced risk of developing non-small cell lung cancer. No such an associations were found in subgroups of women or when samples were divided based on their ages.Conclusion: According to our results, although there was no significant association between XRCC1 Age399Gln polymorphism and developing of lung cancer in population, men with Gln/Gln genotype were in high risk of developing non-small cell lung cancer in Fars province, Iran. Therefore, Gln/Gln polymorphism could be used as a biomarker for screening men at high risk of lung cancer.

کلیدواژه‌ها [English]

  • XRCC1
  • Arg399Gln polymorphism
  • Amplification-refractory mutation system-polymerase chain reaction (ARMS-PCR)
  • Non-small cell lung cancer (NSCLC)
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