Exploring the Communication of the SASP: Dynamic, Interactive, and Adaptive Effects on the Microenvironment

Joëlle Giroud, Inès Bouriez, Hugo Paulus, Albin Pourtier, Florence Debacq-Chainiaux, Olivier Pluquet

Research output: Contribution to journalReview articlepeer-review

Abstract

Cellular senescence is a complex cell state that can occur during physiological ageing or after exposure to stress signals, regardless of age. It is a dynamic process that continuously evolves in a context-dependent manner. Senescent cells interact with their microenvironment by producing a heterogenous and plastic secretome referred to as the senescence-associated secretory phenotype (SASP). Hence, understanding the cross-talk between SASP and the microenvironment can be challenging due to the complexity of signal exchanges. In this review, we first aim to update the definition of senescence and its associated biomarkers from its discovery to the present day. We detail the regulatory mechanisms involved in the expression of SASP at multiple levels and develop how SASP can orchestrate microenvironment modifications, by focusing on extracellular matrix modifications, neighboring cells’ fate, and intercellular communications. We present hypotheses on how these microenvironmental events may affect dynamic changes in SASP composition in return. Finally, we discuss the various existing approaches to targeting SASP and clarify what is currently known about the biological effects of these modified SASPs on the cellular environment.

Original languageEnglish
Article number10788
JournalInternational Journal of Molecular Sciences
Volume24
Issue number13
DOIs
Publication statusPublished - 28 Jun 2023

Keywords

  • age-related disease
  • ageing
  • intercellular communication
  • microenvironment
  • senescence
  • senescence-associated secretory phenotype (SASP)
  • senomorphics

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