Fanconi Anemia Complementation Group Proteins

范可尼贫血互补组蛋白质类
  • 文章类型: Journal Article
    背景:DNA损伤是一个基本过程,在产生蛋白质多样性中起着相当大的作用。FANCI,装载在改变的染色质上,在DNA损伤中起着至关重要的作用。FANCI表达异常可能与致癌作用有关。然而,FANCI在宫颈癌中的生物学作用尚待确定.
    方法:我们通过多个基因表达数据库分析了FANCI表达。使用LinkedOmics鉴定与FANCI及其调节因子共表达的基因。通过肿瘤免疫评估资源(TIMER)研究了FANCI与癌症免疫浸润之间的相关性。
    结果:在多个宫颈癌队列的肿瘤组织中发现FANCI随着扩增而上调。高FANCI表达与较差的总生存期(OS)相关。功能网络分析表明,FANCI调节剪接体,DNA复制,和细胞周期信号通过涉及几种癌症相关激酶和E2F家族的途径。Inadditional,FANCI表达与CD4+T细胞和CD8+T细胞浸润水平呈正相关,和中性粒细胞。FANCI表达还显示出与宫颈癌中的多种免疫标记物组的强相关性。
    结论:这些发现表明FANCI与宫颈癌的预后和免疫浸润有关,为进一步研究FANCI在宫颈癌中的免疫调节作用奠定基础。
    BACKGROUND: DNA damage is a fundamental process that plays a considerable role in generating protein diversity. FANCI, loaded on the altered chromatin, plays a vital role in DNA damage. Abnormal FANCI expression is potentially associated with carcinogenesis.However, the biological role of FANCI in cervical cancer is yet to be determined.
    METHODS: We analyzed FANCI expression via multiple gene expression databases. Genes co-expressed with FANCI and its regulators were identified using LinkedOmics. The correlations between FANCI and cancer immune infiltrates were investigated via Tumor Immune Estimation Resource (TIMER).
    RESULTS: FANCI was found upregulated with amplification in tumor tissues of multiple cervical cancer cohorts. High FANCI expression was associated with poorer overall survival (OS). Functional network analysis suggested that FANCI regulates spliceosome, DNA replication, and cell cycle signaling via pathways involving several cancer-related kinases and the E2F family. In additional, FANCI expression was positively correlated with infiltrating levels of CD4+ T and CD8+ T cells, and neutrophils. FANCI expression also showed strong correlations with diverse immune marker sets in cervical cancer.
    CONCLUSIONS: These findings suggested that FANCI is correlated with prognosis of and immune infiltration in cervical cancer, laying a foundation for further study of the immune regulatory role of FANCI in cervical cancer.
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  • 文章类型: Case Reports
    遗传性结肠癌的特征在于易患恶性肿瘤的异常基因突变的遗传。基因组医学的最新进展已经确定“新”基因的突变会增加结直肠癌的风险。已知BRIP1基因(BRCA1相互作用蛋白C末端解旋酶1)的突变会增加卵巢癌和乳腺癌的风险,但是这种基因与结肠癌的关联以前还没有报道过。
    我们描述了两名结肠癌患者,他们的肿瘤组织在下一代测序分析中被发现含有BRIP1突变。通过分析淋巴细胞证实这些患者在种系中也携带突变。
    这些病例报告强调了先前未报道的BRIP1种系突变与结肠癌易感性的关联。
    Hereditary colon cancer is characterized by the inheritance of an abnormal gene mutation which predisposes to malignancy. Recent advances in genomic medicine have identified mutations in \"novel\" genes as conferring an increased risk of colorectal cancer. Mutations in the BRIP1 gene (BRCA1 Interacting Protein C- terminal helicase 1) are known to increase the risk of ovarian and breast cancers, but this genes association with colon cancer has not been previously reported.
    We describe two patients with colon cancer whose tumor tissue were found to harbor BRIP1 mutations on analysis by next-generation sequencing. These patients were confirmed by analysis of lymphocytes to carry the mutation in the germline as well.
    These case reports highlight a previously unreported association of BRIP1 germline mutations with colon cancer predisposition.
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    文章类型: English Abstract
    范可尼贫血(FA)是一种由造血干细胞缺陷引起的常染色体隐性遗传性疾病。FA的临床表现多样且复杂。FA细胞对产生链间DNA交联的试剂如丝裂霉素C(MMC)或二环氧丁烷(DEB)表现出高度的超敏反应。至少八个互补组在八个基因中存在缺陷(FANCA,FANCB,FANCC,FANCD(1),FANCD(2),FANCE,FANCF和FANCG)已通过基因分析鉴定。六个基因(对应于亚型A,C,D(2)、E,F和G)已被着色,和编码的FA蛋白在共同的细胞途径-“FA途径”中相互作用通过它调节DNA修复。FA分子机制的研究进展为FA的基因治疗提供了理论依据。使用携带正常FA基因cDNA的逆转录病毒转导的FA细胞表现出对DNA交联剂超敏反应的表型校正,比如MMC。本文对FA的临床表现和基因组成进行综述,并对编码的FA蛋白的功能进行了综述。讨论了FA患者的造血干细胞移植和基因治疗。
    Fanconi anaemia (FA) is an autosomal recessive inherited disorder caused by defects in hematopoietic stem cells. The clinical manifestations of FA are diverse and complicated. FA cells display high hypersensitivity to agents which produce interstrand DNA cross-links such as mitomycin C (MMC) or diepoxybutane (DEB). At least eight complementation groups with defects in eight genes (FANCA, FANCB, FANCC, FANCD(1), FANCD(2), FANCE, FANCF and FANCG) have been identified by gene analysis. Six genes (corresponding to subtypes A, C, D(2), E, F and G) have been coloned, and the encoded FA proteins interact in a common cellular pathway - \"FA Pathway\", through which modulate DNA repair. The progress of research on FA molecular mechanism provides gene therapy of FA with theory basis. FA cells transduced with the use of retrovirus carring the normal FA gene cDNA manifestate phenotypic correction of hypersensitivity to DNA cross-linking agents, such as MMC. In this review the clinical manifestations and gene composition of FA, and the functions of encoded FA proteins were summarized. The hematopoietic stem cell transplantation and gene therapy for FA patients were discussed.
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