Saavedra-Torres Jhan S, Pinzón-Fernández María Virginia, Ocampo-Posada Martin, Nati-Castillo H A, Jiménez Hincapie Laura Alejandra, Cadrazo-Gil Eder J, Arias-Intriago Marlon, Rojas-Cadena Marlon, Tello-De-la-Torre Andrea, Osejos Walter, Izquierdo-Condoy Juan S
Grupo de Investigación en Salud (GIS), Universidad del Cauca, Popayan 190002, Colombia.
Grupo de Investigación en Ciencias Básicas y Clínicas de la Salud, Universidad Javeriana, Cali 760031, Colombia.
Cells. 2025 Jun 19;14(12):930. doi: 10.3390/cells14120930.
Sepsis is a life-threatening syndrome characterized by a dysregulated immune response to infection, frequently leading to multiorgan failure and high mortality. Inflammasomes-cytosolic multiprotein complexes of the innate immune system-serve as critical platforms for sensing pathogen- and damage-associated molecular patterns (PAMPs and DAMPs). Key sensors such as NLRP3, AIM2, and IFI16 initiate caspase-1 activation, IL-1β and IL-18 maturation, and gasdermin D-mediated pyroptosis. In sepsis, excessive inflammasome activation drives oxidative stress, endothelial dysfunction, immunothrombosis, and immune exhaustion. This maladaptive cascade is further aggravated by the release of DAMPs and procoagulant factors, compromising vascular integrity and immune homeostasis. Prolonged activation contributes to immunoparalysis, lymphopenia, and increased susceptibility to secondary infections. Inflammasome signaling also intersects with necroptosis and ferroptosis, amplifying systemic inflammation and tissue injury. Additionally, various pathogens exploit immune evasion strategies to modulate inflammasome responses and enhance virulence. Therapeutic interventions under investigation include selective NLRP3 inhibitors, IL-1 blockers, gasdermin D antagonists, and extracorporeal cytokine hemoadsorption. Emerging approaches emphasize biomarker-guided immunomodulation to achieve personalized therapy. While preclinical studies have shown promising results, clinical translation remains limited. Targeting inflammasomes may offer a path toward precision immunotherapy in sepsis, with potential to reduce organ dysfunction and improve survival.
脓毒症是一种危及生命的综合征,其特征是对感染的免疫反应失调,常导致多器官功能衰竭和高死亡率。炎性小体——先天免疫系统的胞质多蛋白复合物——作为感知病原体和损伤相关分子模式(PAMPs和DAMPs)的关键平台。诸如NLRP3、AIM2和IFI16等关键传感器启动半胱天冬酶-1激活、白细胞介素-1β和白细胞介素-18成熟以及gasdermin D介导的细胞焦亡。在脓毒症中,过度的炎性小体激活会导致氧化应激、内皮功能障碍、免疫血栓形成和免疫耗竭。DAMPs和促凝血因子的释放会进一步加剧这种适应不良的级联反应,损害血管完整性和免疫稳态。持续激活会导致免疫麻痹、淋巴细胞减少以及对继发感染的易感性增加。炎性小体信号传导还与坏死性凋亡和铁死亡相互作用,放大全身炎症和组织损伤。此外,各种病原体利用免疫逃避策略来调节炎性小体反应并增强毒力。正在研究的治疗干预措施包括选择性NLRP3抑制剂、白细胞介素-1阻滞剂、gasdermin D拮抗剂和体外细胞因子血液吸附。新出现的方法强调生物标志物引导的免疫调节以实现个性化治疗。虽然临床前研究已显示出有希望的结果,但临床转化仍然有限。靶向炎性小体可能为脓毒症的精准免疫治疗提供一条途径,具有减少器官功能障碍和提高生存率的潜力。
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