title: Northwestern China:  a place to learn more on oesophageal cancer. Part two:  gene alterations and polymorphisms.
abstract: In the first part of this review, some behavioural and environmental risk factors playing important roles in the development of Kazakh's oesophageal squamous cell carcinoma (OSCC) were presented. Although all individuals have been exposed to the same environment and share the same behaviour, some of them will not develop OSCC. Thus, gene susceptibility and/or gene polymorphism are unavoidably involved. The molecular events underlying the initiation and progression of OSCC remain, however, poorly understood. In the second part of our review of OSCC in northwestern China, especially in the high-risk Kazakh population, some recent progress in the study of the molecular biology underlying oesophageal carcinogenesis, including chromosome deletions and loss of heterozygocity, polymorphisms of genes involved in xenobiotic metabolizing and DNA repair, and genetic alterations of transcriptional factors and apoptosis genes are presented. Results obtained in this high-risk population are compared with those obtained in other areas that are also known to be at high risk for OSCC, and whenever possible, with those studies performed in European, American or Australian low-risk areas. Recent advances in the investigation of the proteomics and microRNA biomarkers potentially useful for an earlier diagnosis and/or prognosis of OSCC are also discussed.
authors: Medical Research Center, 1st Teaching Hospital, Xinjiang Medical University, Urumqi, Xinjiang Uygur Autonomous Region, China.
authors: ShuTao
authors: S
authors: Zheng
authors: Lucine
authors: L
authors: Vuitton
authors: Ilyar
authors: I
authors: Sheyhidin
authors: Dominique Angèle
authors: DA
authors: Vuitton
authors: YueMing
authors: Y
authors: Zhang
authors: XiaoMei
authors: X
authors: Lu
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000453:epidemiology / Q000235:genetics*; D002681:China / Q000453:epidemiology; D002872:Chromosome Deletion; D004938:Esophageal Neoplasms / Q000453:epidemiology / Q000235:genetics*; D052138:Genes, Neoplasm; D020022:Genetic Predisposition to Disease; D006801:Humans; D019656:Loss of Heterozygosity; D011110:Polymorphism, Genetic