The Potential Role of HDAC1 and HDAC3 Immunoexpression in P53 Downregulation and Tumor Aggressiveness of Colon and Rectum Carcinomas Patients.

Yasir B Qaddoori, Ahmed S K Al-Khafaji, Basim M Khashman, Kifah H Abdulghafour
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Abstract

Background: Colorectal cancer, ranking second place in global cancer mortality, arises from diverse causes. There is growing recognition of the substantial involvement of the epigenetic modifications of histones at the DNA level in the occurrence of CRC.

Aim: To assess the expression of p53, HDAC1, and HDAC3 proteins in a cohort of CRC patients and to analyze potential relationship between their expression and the stages of CRC progression.

Materials and methods: The retrospective investigation was carried out on 95 paraffin-embedded CRC tissue samples. The expression of p53, HDAC1, and HDAC3 was assessed immunohistochemically.

Results: Notably, the expression of the p53 protein in CRC tissue samples exhibited a prominent correlation with the protein expression of both HDAC1 (p < 0.001, rho = 0.522) and HDAC3 (p < 0.001, rho = 0.411), as well as the advanced TNM staging of CRC (p = 0.002, rho = 0.313). Downregulation of p53 was correlated with underexpressed HDAC1 and HDAC3. Nevertheless, the observed expression of p53 exhibited a significant negative correlation with the age of the patients.

Conclusion: The data on HDACs-p53 co-expression suggest a possible mechanism of interaction between the expression of these proteins.

HDAC1和HDAC3免疫表达在结肠癌和直肠癌患者P53下调和肿瘤侵袭性中的潜在作用
背景:结直肠癌在全球癌症死亡率中排名第二,其病因多种多样。越来越多的人认识到,组蛋白的表观遗传修饰在DNA水平上参与了结直肠癌的发生。目的:评估p53、HDAC1和HDAC3蛋白在结直肠癌患者中的表达,并分析它们的表达与结直肠癌进展阶段之间的潜在关系。材料与方法:对95例结直肠癌石蜡包埋组织标本进行回顾性调查。免疫组织化学检测p53、HDAC1和HDAC3的表达。结果:值得注意的是,CRC组织样本中p53蛋白表达与HDAC1蛋白表达(p < 0.001, rho = 0.522)和HDAC3蛋白表达(p < 0.001, rho = 0.411)以及CRC TNM晚期分期(p = 0.002, rho = 0.313)均有显著相关性。p53下调与HDAC1和HDAC3低表达相关。然而,观察到的p53表达与患者年龄呈显著负相关。结论:HDACs-p53共表达的数据提示了这两种蛋白表达之间可能存在相互作用的机制。
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