The role of lipid-based signalling in wound healing and senescence

• Published in: Mechanisms of ageing and development Vol. 198; p. 111527
• Main Authors: Pils, Vera, Terlecki-Zaniewicz, Lucia, Schosserer, Markus, Grillari, Johannes, Lämmermann, Ingo
• Format: Journal Article
• Language: English
• Published: Ireland Elsevier B.V 01.09.2021
• Subjects: Aging - metabolism; Cell Communication - physiology; Cellular Senescence - drug effects; Cellular Senescence - physiology; Humans; Leukotriene; Lipid Metabolism; Prostaglandin; Senolytic; Senotherapeutics - pharmacology; Signal Transduction - physiology; Skin ageing; Specialized pro-resolving mediators; Wound Healing - drug effects; Wound Healing - physiology; PGD2; S1P2; Senolytic; LT; LX; AP-1; SASP; HETE; TXA2/TXB2; NF-κB; SPM; α-SMA; STAT-3; IL-1b; p16INK4a; MaR; AA; Prostaglandin; PUFA; cysLT; p21; PPARγ; EV; MMP; sHE; Leukotriene; SPH1K; EET; Mer TK; Skin ageing; 2-AG; ROS; DHA; LPA; MAP; LPC; LPE; IRI; CEBPB; C1P; S1P; MAGL; SM; LTA4H; MSC; PMNL; ATG5; RvE; PGE2; RvD; Rv; 15-PGDH; PGI2; BALF; cPLA2; COX; ECM; p19ARF; PAMP; COL1A2; TNF-α; EPA; TGFβ; IPF; DAMP; TIMP; Specialized pro-resolving mediators
• ISSN: 0047-6374; 1872-6216
• DOI: 10.1016/j.mad.2021.111527

•Lipid-based signalling plays a prominent role in wound healing.•Lipid-based signalling molecules are modulated in cellular senescence and ageing.•Cellular senescence has beneficial and detrimental roles in wound healing.•Lipid-based molecules are part of the senescence-associated secretory phenotype. Lipid-based signalling modulates several cellular processes and intercellular communication during wound healing and tissue regeneration. Bioactive lipids include but are not limited to the diverse group of eicosanoids, phospholipids, and extracellular vesicles and mediate the attraction of immune cells, initiation of inflammatory responses, and their resolution. In aged individuals, wound healing and tissue regeneration are greatly impaired, resulting in a delayed healing process and non-healing wounds. Senescent cells accumulate with age in vivo, preferably at sites implicated in age-associated pathologies and their elimination was shown to alleviate many age-associated diseases and disorders. In contrast to these findings, the transient presence of senescent cells in the process of wound healing exerts beneficial effects and limits fibrosis. Hence, clearance of senescent cells during wound healing was repeatedly shown to delay wound closure in vivo. Recent findings established a dysregulated synthesis of eicosanoids, phospholipids and extracellular vesicles as part of the senescent phenotype. This intriguing connection between cellular senescence, lipid-based signalling, and the process of wound healing and tissue regeneration prompts us to compile the current knowledge in this review and propose future directions for investigation.