乳酸诱导的乳酸化引起了各个生物学、医学学科的极大关注,乳酸化修饰已成为一个有前途的研究领域。最近的研究表明,乳酸化对细胞的蛋白质功能、信号转导、基因表达和免疫反应都产生了显著影响。这些过程在各种疾病,特别是肿瘤进展中起着关键作用[1-7]。这其中也不乏对缺氧诱导因子-1α (HIF-1α)乳酸化的研究,HIF-1α乳酸化修饰能驱动前列腺癌中的血管生成和血管模拟[8]。此外,在胃癌中,乳酸化修饰可通过稳定HIF-1α的活性,上调血管内皮生长因子和血管生成相关基因的表达[9]。
对于DCLK1,相关报道显示DCLK1与HIF-1α的表达量正相关[10],同时它能够通过激活Wnt/β-catenin、Notch和NF-κB等信号通路促进肿瘤进展[11-14],一些文章也显示DCLK1在胃癌组织中高表达[15,16]。但是对于其乳酸化的研究尚存在较大空白。尽管现有报道未直接涉及DCLK1乳酸化,但基于乳酸化修饰的普遍性和其在肿瘤中的调控功能,以及我们预实验结果(对大量DCLK1的乳酸化位点进行了测定),我们相信DCLK1乳酸化在胃癌中对其他机制具有潜在的调控影响,DCLK1乳酸化将会作为未来癌症治疗的靶点,具有巨大的潜力。
参考文献:
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