Cellular senescence and the senescent secretory phenotype: therapeutic opportunities

Tamara Tchkonia1, Yi Zhu, Jan van Deursen

  • 1Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, Minnesota 55905, USA.

Insights

Aging is a modifiable risk factor for chronic diseases. Targeting cellular senescence and its associated inflammatory pathways offers a promising strategy to delay multiple age-related conditions and improve healthspan.

Area of Science:

  • Gerontology and cellular biology.
  • Immunology and chronic disease research.

Background:

  • Aging is the primary risk factor for numerous chronic diseases, driving significant healthcare costs.
  • Chronic diseases and frailty are major burdens in developed nations, linked to aging processes.

Purpose of the Study:

  • To explore aging as a modifiable risk factor for age-related diseases.
  • To review the role of cellular senescence and the senescence-associated secretory phenotype (SASP) in aging and disease.
  • To discuss therapeutic strategies targeting senescent cells and SASP for clinical intervention.

Main Methods:

  • Review of existing literature on aging mechanisms, cellular senescence, and SASP.
  • Analysis of the association between senescence, SASP, chronic diseases, and frailty.
  • Exploration of current and potential therapeutic interventions targeting senescent cells.

Main Results:

  • Cellular senescence, characterized by the SASP, contributes to chronic inflammation.
  • The SASP is implicated in the pathogenesis of various age-related chronic diseases and frailty.
  • Targeting senescent cells presents a viable therapeutic avenue for age-related conditions.

Conclusions:

  • Modulating fundamental aging mechanisms, specifically cellular senescence, may delay multiple chronic diseases simultaneously.
  • Therapeutic strategies focused on senescent cells and SASP hold promise for improving healthspan and treating age-related pathologies.
  • Further research into clinical interventions targeting senescence is warranted.

Related Concept Videos

Replicative Cell Senescence02:15

Replicative Cell Senescence

Replicative cell senescence is a property of cells that allows them to divide a finite number of times throughout the organism's lifespan while preventing excessive proliferation. Replicative senescence is associated with the gradual loss of the telomere — short, repetitive DNA sequences found at the end of the chromosomes. Telomeres are bound by a group of proteins to form a protective cap on the ends of chromosomes. Embryonic stem cells express telomerase — an enzyme that adds the telomeric...
Replicative Cell Senescence02:15

Replicative Cell Senescence

Replicative cell senescence is a property of cells that allows them to divide a finite number of times throughout the organism's lifespan while preventing excessive proliferation. Replicative senescence is associated with the gradual loss of the telomere — short, repetitive DNA sequences found at the end of the chromosomes. Telomeres are bound by a group of proteins to form a protective cap on the ends of chromosomes. Embryonic stem cells express telomerase — an enzyme that adds the telomeric...
Cellular Injury V: Apoptosis and Autophagy01:22

Cellular Injury V: Apoptosis and Autophagy

Cells respond to damage and stress through highly coordinated processes that decide whether they survive or undergo controlled self-destruction. Two major pathways involved in this regulation are apoptosis, a type of programmed cell death, and autophagy, a survival mechanism that helps cells adapt to adverse conditions.ApoptosisApoptosis removes aged or injured cells to maintain tissue balance. During this process, the cell shrinks, chromatin condenses and fragments, and membrane-bound...
Mitochondria01:37

Mitochondria

Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
Cellular Adaptation I: Introduction and Atrophy01:23

Cellular Adaptation I: Introduction and Atrophy

Cells can adapt to environmental changes to maintain function and avoid injury, a process called cellular adaptation. Adapted cells exist in a reversible intermediate state with changes in size, number, phenotype, metabolism, or function. These responses help cells meet altered physiological or pathological demands; for example, enlargement of breast and uterine tissues during pregnancy. Early adaptations may enhance function, but persistent stress eventually causes tissue damage.Types of...
Stem Cell Therapy for Tissue Regeneration01:21

Stem Cell Therapy for Tissue Regeneration

Stem cell therapy is a method used in regenerative medicine to repair and restore function to damaged tissues and organs. Stem cells have the potential to proliferate and differentiate into various tissue types, making them ideal candidates for tissue regeneration. For example, hematopoietic stem cell transplants are commonly used in blood cancer treatment to replenish damaged bone marrow and restore healthy blood cells.
Types of Stem Cells used in Stem Cell Therapy
The two main cell types that...