Wunderlich Frank, Gerovska Daniela, Delic Denis, Araúzo-Bravo Marcos J
Department of Biology, Heinrich-Heine-University, 40225 Düsseldorf, Germany.
Computational Biology and Systems Biomedicine, Biogipuzkoa Health Research Institute, 20014 San Sebastian, Spain.
Int J Mol Sci. 2025 Mar 29;26(7):3173. doi: 10.3390/ijms26073173.
In response to vaccination and/or infectious agents, the liver produces acute-phase proteins (APPs) driven by IL-6, which circulate in blood plasma as components of the humoral innate defense. This study investigates the liver of mice for possible effects of protective vaccination against primary blood-stage infections of malaria on the expression of genes encoding APPs and IL-6 family members. Female Balb/c mice were vaccinated with a non-infectious vaccine prior to challenge with 10infected erythrocytes, resulting in about 80% survival of otherwise lethal infections. Gene expression microarrays were used to determine the relative transcript levels of genes in the livers of vaccinated and unvaccinated mice on days 0, 1, 4, 8, and 11 (). Vaccination induced significant (-value < 0.05) differences in the expression of malaria-responsive genes toward the end of crisis on day 11 , when mice recovered from infections. These genes include , , , and , encoding APPs described to inhibitorily interact with parasitic blood stages; the genes , , , , , and , and , , and , encoding proteins balancing coagulation vs. fibrinolysis dysregulated by malaria, respectively; the genes , , , , and , encoding components of lytic complement membrane attack complex (MAC); and , , and , encoding complement-regulatory proteins. Vaccination accelerated, albeit differently, the malaria-induced activation of all three complement pathways, evidenced as higher transcript levels of , , , , , , , , and on day 4 , , , and on day 1 , and , encoding the multifunctional protease inhibitor C1INH, on day 0 Protective vaccination may also accelerate downregulation of the malaria-promoting lethality of IL-6 trans-signaling, which may contribute to an overall accelerated recovery of mice from otherwise lethal blood-stage malaria.
作为对疫苗接种和/或感染因子的反应,肝脏会产生由白细胞介素-6驱动的急性期蛋白(APPs),这些蛋白作为体液固有防御的组成部分在血浆中循环。本研究调查了小鼠肝脏,以探究针对疟疾原发性血液阶段感染的保护性疫苗接种对编码APPs和白细胞介素-6家族成员的基因表达可能产生的影响。雌性Balb/c小鼠在受到10个感染红细胞攻击之前接种了非感染性疫苗,使得原本致命的感染有大约80%的存活率。使用基因表达微阵列来确定接种疫苗和未接种疫苗的小鼠在第0、1、4、8和11天肝脏中基因的相对转录水平()。在第11天危机结束时,当小鼠从感染中恢复时,疫苗接种诱导了疟疾反应基因表达的显著(-值<0.05)差异。这些基因包括、、、和,它们编码的APPs被描述为与寄生虫血液阶段存在抑制性相互作用;基因、、、、、和,以及、、和,分别编码平衡疟疾失调的凝血与纤维蛋白溶解的蛋白质;基因、、、和,编码溶解性补体膜攻击复合物(MAC)的成分;以及、、和,编码补体调节蛋白。疫苗接种以不同方式加速了疟疾诱导的所有三条补体途径的激活,表现为第4天、、、、、、、和的转录水平升高,第1天、和的转录水平升高,以及第0天编码多功能蛋白酶抑制剂C1INH的的转录水平升高。保护性疫苗接种还可能加速白细胞介素-6转信号通路促进疟疾致死性的下调,这可能有助于小鼠从原本致命的血液阶段疟疾中整体加速恢复。