CaMKK2：肿瘤应激整合节点

摘要(中文译文)

肿瘤进展依赖于癌细胞与肿瘤微环境对免疫压力、代谢限制、基因组不稳定性和生物力学应激的协同适应。尽管这些适应性反应通常通过不同的实验和概念框架进行研究，但越来越多的证据表明它们汇聚于共享的调控通路。钙信号是细胞适应的基本调节因子；然而，其在整合肿瘤应激反应中的作用仍不明确。本综述综合了新出现的证据，这些证据表明钙/钙调蛋白依赖性蛋白激酶激酶2（CaMKK2）是连接钙信号与机械、代谢、复制和免疫应激反应中肿瘤及微环境协同适应的关键调节因子。我们讨论了CaMKK2如何通过汇聚的肿瘤内在和微环境程序支持肿瘤生态系统适应性，并探讨了靶向CaMKK2及其信号网络的治疗意义，强调情境依赖性、合理的联合策略以及生物标志物引导的临床转化。

Abstract

Tumor progression depends on coordinated adaptation of cancer cells and the tumor microenvironment to immune pressure, metabolic limitations, genomic instability, and biomechanical stress. While these adaptive responses have often been investigated through distinct experimental and conceptual frameworks, increasing evidence indicates that they converge on shared regulatory pathways. Calcium signaling is a fundamental regulator of cellular adaptation; however, its role in integrating tumor stress responses remains unclear. This review synthesizes emerging evidence identifying calcium/calmodulin-dependent protein kinase kinase 2 (CaMKK2) as a key regulator linking calcium signaling to coordinated tumor and microenvironmental adaptation across mechanical, metabolic, replication, and immune stress responses. We discuss how CaMKK2 supports tumor ecosystem fitness through convergent tumor-intrinsic and microenvironmental programs and consider the therapeutic implications of targeting CaMKK2 and its signaling network, emphasizing context dependence, rational combination strategies, and biomarker-guided clinical translation.

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