Frailty and tertiary lymphoid structures in immunosenescence: Emerging associations, mechanistic clues and future perspectives
Zeyang Lin , Jiatong Chen , Sihui Liu , Shaodi Wen , Liangjie Zheng
Ageing and Cancer Research & Treatment ›› 2026, Vol. 3 ›› Issue (4) : 202606
Frailty, a geriatric syndrome marked by multisystem functional decline and heightened vulnerability, threatens older adults’ health span. Immunosenescence and chronic low-grade inflammation are increasingly recognized as core drivers, with age-related impairments in cellular, humoral, and innate immunity disrupting immune homeostasis. Tertiary lymphoid structures (TLS), ectopic immune aggregates that orchestrate local immune responses, have emerged as candidate regulators in chronic disease, yet their role in frailty remains largely unexplored. Here, we propose a conceptual framework for frailty pathogenesis in which immunosenescence and chronic low-grade inflammation (inflammaging) may act as upstream biological drivers associated with systemic lymphatic dysfunction, potentially contributing to the structural and functional dysregulation of TLS, a candidate intermediate tissue-level histological link. TLS dysfunction may subsequently contribute to multi-organ functional decline and the progression of frailty. We synthesize current evidence on the dynamic characteristics of TLS in aging, discuss TLS as candidate biomarkers and putative therapeutic targets for frailty, and highlight intervention strategies including molecular modulation, lymphatic function enhancement, immunotherapy, and lifestyle modifications. This tissue-level perspective highlights TLS as a potential histological link connecting immunosenescence, lymphatic dysfunction, and frailty, offering novel avenues for geriatric precision medicine and the development of immune-targeted interventions to delay frailty progression.
Frailty / immune aging / tertiary lymphoid structure / chronic inflammation / immune regulation
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