牙龈卟啉单胞菌双组分信号转导系统的研究进展

牙龈卟啉单胞菌被认为是主要的牙周致病菌之一，与慢性牙周炎发生发展密切相关。面对复杂的口腔环境，牙龈卟啉单胞菌必须及时感知环境变化并作出反应，双组分信号转导系统在其中具有重要作用。双组分信号转导系统通常由组氨酸激酶和反应调节蛋白组成，通过控制蛋白的磷酸化状态调节信号传导。近年来，有关牙龈卟啉单胞菌的双组分信号转导系统陆续被报道。本文就牙龈卟啉单胞菌的双组分系统的组成和功能进行综述。

Research progress on two-component signal transduction systems in Porphyromonas gingivalis

Porphyromonas gingivalis (P. gingivalis), a Gram-negative oral anaerobe, is considered to be a major pathogenic agent involved in the onset and progression of chronic periodontitis. P. gingivalis must be able to perceive and respond to the complicated changes in host to survive the environmental challenges, in which the two-component signal transduction systems (TCSs) play critical roles by connecting input signals to cellular physiological output. Canonical TCS consists of a sensor histidine kinase and a cognate response regulator that functions via a phosphorylation cascade. In this review, the roles of TCSs in P. gingivalis were demonstrated by illustrating the target genes and modulation modes, which may help elucidate the underlying mechanisms in future studies.