The Senescence-Associated Secretory Phenotype Induces Neuroendocrine Transdifferentiation
05-12-2023“We recently unveiled a new interesting role for SASP: its ability to induce neuroendocrine transdifferentiation (NED) in breast cancer epithelial cells [3].”
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BUFFALO, NY- May 12, 2023 – A new editorial paper was published in Aging (listed by MEDLINE/PubMed as "Aging (Albany NY)" and "Aging-US" by Web of Science) Volume 15, Issue 8, entitled, “The senescence-associated secretory phenotype induces neuroendocrine transdifferentiation.”
In this editorial, researchers Anda Huna, Nadine Martin and David Bernard from the Université de Lyon discuss the senescence-associated secretory phenotype (SASP). SASP, in addition to stable proliferation arrest, is one of the most remarkable characteristics of senescent cells. Indeed, these cells secrete a variety of factors including cytokines, growth factors and matrix metalloproteases among others. In response to stress, through their SASP, senescent cells are able to modify and instruct their microenvironment.
“The SASP is known to have several, sometimes contradictory, effects on phenotypes, including the induction or reinforcement of senescence in neighboring cells, promotion or inhibition of stemness, modification of extracellular matrix, activation or inhibition of immune responses and induction of epithelial-mesenchymal transition and cell migration.”
Although cellular senescence and its SASP can initially display some beneficial effects, for instance favoring wound healing or blocking tumor initiation, accumulation of senescent cells and their secretome during aging or chronic stresses (tobacco, obesity, alcohol among others) plays a significant role in promoting aging-associated features and pathologies, like fibrosis, steatosis, chronic inflammation or cancer. In the context of cancer, senescence initially has an antitumoral role, as it promotes proliferation arrest and favors an anti-tumoral immune surveillance in response to oncogenic stress or DNA damage accumulation. However, SASP plays a dual role in tumor initiation and progression, as it first has a tumor suppressive action by reinforcing senescence in neighboring cells and recruiting immune cells, but also plays a tumor promoting role by promoting stemness, epithelial-mesenchymal transition and cell migration and by inhibiting immune responses.
“Overall our work reveals a new effect of senescent cells and their SASP in tumors and offers new insights into NED [neuroendocrine transdifferentiation] in breast and prostate cancer biology. It also provides a new vision of the contribution of senescent cells and their SASP to aging-related pathologies, which could involve NED induction in some contexts.”
Read the full editorial: DOI: https://doi.org/10.18632/aging.204669
Corresponding Author: David Bernard
Corresponding Email: david.bernard@lyon.unicancer.fr
Keywords: cellular senescence, aging, cancer, NF-κB, calcium signaling
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About Aging-US:
Aging publishes research papers in all fields of aging research including but not limited, aging from yeast to mammals, cellular senescence, age-related diseases such as cancer and Alzheimer’s diseases and their prevention and treatment, anti-aging strategies and drug development and especially the role of signal transduction pathways such as mTOR in aging and potential approaches to modulate these signaling pathways to extend lifespan. The journal aims to promote treatment of age-related diseases by slowing down aging, validation of anti-aging drugs by treating age-related diseases, prevention of cancer by inhibiting aging. Cancer and COVID-19 are age-related diseases.
Aging is indexed by PubMed/Medline (abbreviated as “Aging (Albany NY)”), PubMed Central, Web of Science: Science Citation Index Expanded (abbreviated as “Aging‐US” and listed in the Cell Biology and Geriatrics & Gerontology categories), Scopus (abbreviated as “Aging” and listed in the Cell Biology and Aging categories), Biological Abstracts, BIOSIS Previews, EMBASE, META (Chan Zuckerberg Initiative) (2018-2022), and Dimensions (Digital Science).
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