01 January 2008
Med Sci Monit 2008; 14(1): RA8-15 :: ID: 636053
DNA repair is an important defense mechanism against DNA damage and includes four distinct pathways: direct, excision, mismatch, and double-strand break repair systems. Recent evidence suggests that alterations in proteins participating in the DNA repair systems may result in cellular senescence, cell death, and neoplastic transformation. Malignancies in adulthood exhibit genomic instability and an increased mutation rate due to underlying defects in DNA repair. However, our knowledge on DNA repair defects, both in germline and somatic mutations, and their relationship with childhood malignancies remains incomplete. Mutations, gene deletions, and inversions in various DNA repair genes have been reported and special attention has recently been focused on the interaction between these abnormalities and malignant transformation in childhood. The purpose of this review is to summarize the existing clinical information concerning components of the DNA repair systems and their influence on the development of the most common pediatric malignancies, including leukemia, tumors of the central nervous system, rhabdomyosarcoma, and retinoblastoma. Such information could possibly explain the response or resistance to chemotherapy and the possible risk of relapse in childhood malignancies presenting specific DNA repair defects. Additionally, these data could be beneficial for the development of novel therapeutic strategies.
Keywords: Retinoblastoma - metabolism, Rhabdomyosarcoma - metabolism, Polymorphism, Genetic, Retinal Neoplasms - metabolism, Mutation, Neoplasms - metabolism, Leukemia - metabolism, DNA Mismatch Repair, DNA Repair - physiology, DNA Damage, Child, Central Nervous System Neoplasms - metabolism
Most Viewed Current Articles
13 Apr 2020 : Original articleOutcome of 24 Weeks of Combined Schroth and Pilates Exercises on Cobb Angle, Angle of Trunk Rotation, Chest...
Med Sci Monit Basic Res 2020; 26:e920449
11 May 2020 : Original articleAnalysis of Psychological and Sleep Status and Exercise Rehabilitation of Front-Line Clinical Staff in the ...
Med Sci Monit Basic Res 2020; 26:e924085
05 Jan 2021 : Review articleA Southeast Asian Perspective on the COVID-19 Pandemic: Hemoglobin E (HbE)-Trait Confers Resistance Against...
Med Sci Monit Basic Res 2021; 27:e929207
10 Aug 2020 : Clinical ResearchEffects of Cognitive Task Training on Dynamic Balance and Gait of Patients with Stroke: A Preliminary Rando...
Med Sci Monit Basic Res 2020; 26:e925264