ABCC4,也称为ATP-binding cassette transporter 4,是一种重要的跨膜转运蛋白。该基因编码的蛋白质在多种细胞过程中发挥重要作用,包括药物代谢、细胞信号传导和细胞周期调节。ABCC4蛋白主要定位于细胞膜上,负责将多种细胞内物质,如前列腺素和核苷酸等,转运到细胞外。因此,ABCC4在维持细胞内环境稳定和细胞信号传导中发挥着关键作用。
ABCC4基因在多种疾病的发生发展中发挥着重要作用。例如,在胰腺癌中,ABCC4蛋白的表达水平显著升高,抑制ABCC4的表达可以显著抑制胰腺癌细胞的增殖和集落形成[2]。此外,ABCC4基因的表达与胶质母细胞瘤的复发和总体生存率呈负相关,ABCC4基因的失活可以激活cGMP-PKG信号传导通路,促进胶质母细胞瘤细胞的恶性转化[3]。在结直肠癌中,ABCC4和ABCG2的表达水平与肿瘤相关巨噬细胞的浸润和FOLFOX治疗的敏感性相关[4]。
此外,ABCC4基因的突变和多态性与多种疾病的发生发展也密切相关。例如,在金黄色猎犬中,ABCC4基因的突变与子宫蓄脓的发生相关[1]。在人类中,ABCC4基因的非同义单核苷酸多态性(SNP)rs11568658(G187W)可以降低ABCC4依赖性耐药性[5]。ABCC4基因的沉默可以逆转人胃癌细胞的多药耐药性,增强胃癌细胞对化疗药物的敏感性[6]。
此外,ABCC4基因还与糖尿病肾脏疾病的发生发展相关。在糖尿病肾脏疾病小鼠的肾脏组织中,ABCC4的表达水平升高,参与调节脂质代谢和PPAR信号通路[7]。ABCC4基因的启动子多态性(-1508A>G)可能增加哮喘患者的外周血和尿液中炎症因子的水平,从而参与气道炎症的发生[8]。ABCC4基因还影响巨核细胞发育和血小板形成,保护巨核细胞免受6-巯基嘌呤的细胞毒性[9]。ABCC4基因的表达与急性髓细胞性白血病细胞对阿糖胞苷的敏感性相关,ABCC4基因的缺失可以增强阿糖胞苷对白血病细胞的细胞毒性[10]。
综上所述,ABCC4基因在多种生物学过程中发挥着重要作用,其表达和功能异常与多种疾病的发生发展密切相关。深入研究ABCC4基因的功能和调控机制,有助于揭示相关疾病的发病机制,为疾病的治疗和预防提供新的思路和策略。
参考文献:
1. Arendt, Maja, Ambrosen, Aime, Fall, Tove, Lindblad-Toh, Kerstin, Hagman, Ragnvi. 2021. The ABCC4 gene is associated with pyometra in golden retriever dogs. In Scientific reports, 11, 16647. doi:10.1038/s41598-021-95936-1. https://pubmed.ncbi.nlm.nih.gov/34404837/
2. Zhang, Zhuo, Wang, Jiancheng, Shen, Baiyong, Peng, Chenghong, Zheng, Minhua. 2011. The ABCC4 gene is a promising target for pancreatic cancer therapy. In Gene, 491, 194-9. doi:10.1016/j.gene.2011.09.029. https://pubmed.ncbi.nlm.nih.gov/21989485/
3. Chiang, Jung-Ying, Wei, Sung-Tai, Chang, Huan-Jui, Wang, Chi-Chung, Hsieh, Chia-Hung. 2024. ABCC4 suppresses glioblastoma progression and recurrence by restraining cGMP-PKG signalling. In British journal of cancer, 130, 1324-1336. doi:10.1038/s41416-024-02581-2. https://pubmed.ncbi.nlm.nih.gov/38347095/
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