UBE2O is a distinctive ubiquitin-conjugating enzyme characterized by its large size(1292 residues)and dual E2/E3 enzymatic activities,enabling diverse ubiquitylation types.Unlike typical E2 enzymes(150~200 residues),U...UBE2O is a distinctive ubiquitin-conjugating enzyme characterized by its large size(1292 residues)and dual E2/E3 enzymatic activities,enabling diverse ubiquitylation types.Unlike typical E2 enzymes(150~200 residues),UBE2O’s multifunctionality allows it to regulate substrate degradation,subcellular localization,and functional modulation.Emerging studies highlight its critical roles in protein quality control,erythroid differentiation,metabolic regulation,and maintenance of circadian rhythm.Dysregulation of UBE2O is implicated in various diseases,including cancers,neurodegenerative disorders,and metabolic diseases.This review extensively discusses the unique structural features,diverse biological functions,and pathological roles of UBE2O,as well as its therapeutic potential for associated diseases.展开更多
文摘目的探讨组蛋白H2B单泛素化(histone H2B monoubiquitination,u H2B)在原发性结肠腺癌中的表达及其与临床病理参数的关系。方法采用免疫组化ABC法检测116例原发性结肠腺癌及15例正常结肠黏膜组织中u H2B的表达,并复习相关文献。结果 u H2B在低分化原发性结肠腺癌中的阳性率(19.4%,6/31)显著低于高+中分化腺癌(49.4%,42/85)及正常结肠黏膜组织(86.7%,13/15),差异有统计学意义(P<0.05)。u H2B与肿瘤分化程度、Dukes分期、TNM分期及淋巴结转移相关(P<0.05),与患者性别、年龄无关(P>0.05)。结论 u H2B作为一种抑癌因子可能与原发性结肠腺癌的恶化过程密切相关。其可能会成为原发性结肠腺癌早期检测、治疗及预后评估的新分子生物学标志并应用于临床,而其在结肠腺癌中的具体作用机制仍有待进一步研究。
基金Supported by Special Projects in Key Areas for Guangdong Provincial Colleges and Universities (No.2021ZDZX2009)Guangzhou Medical University Discipline Construction Funds (Basic Medicine)(No.JCXKJS2022A05)。
文摘UBE2O is a distinctive ubiquitin-conjugating enzyme characterized by its large size(1292 residues)and dual E2/E3 enzymatic activities,enabling diverse ubiquitylation types.Unlike typical E2 enzymes(150~200 residues),UBE2O’s multifunctionality allows it to regulate substrate degradation,subcellular localization,and functional modulation.Emerging studies highlight its critical roles in protein quality control,erythroid differentiation,metabolic regulation,and maintenance of circadian rhythm.Dysregulation of UBE2O is implicated in various diseases,including cancers,neurodegenerative disorders,and metabolic diseases.This review extensively discusses the unique structural features,diverse biological functions,and pathological roles of UBE2O,as well as its therapeutic potential for associated diseases.
