Senescence and Senotherapies in Biliary Atresia and Biliary Cirrhosis
06-28-2023“Our data provide the first integrative report about premature senescence in pediatric [biliary atresia] [...]”
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BUFFALO, NY- June 28, 2023 – A new research paper was published in Aging (listed by MEDLINE/PubMed as "Aging (Albany NY)" and "Aging-US" by Web of Science) Volume 15, Issue 11, entitled, “Senescence and senotherapies in biliary atresia and biliary cirrhosis.”
Premature senescence occurs in adult hepatobiliary diseases and worsens the prognosis through deleterious liver remodeling and hepatic dysfunction. Senescence might also arise in biliary atresia (BA), the first cause of pediatric liver transplantation. Alternatives to transplantation are needed. In this new study, researchers Giulia Jannone, Eliano Bonaccorsi Riani, Catherine de Magnée, Roberto Tambucci, Jonathan Evraerts, Joachim Ravau, Pamela Baldin, Caroline Bouzin, Axelle Loriot, Laurent Gatto, Anabelle Decottignies, Mustapha Najimi, and Etienne Marc Sokal from the Université catholique de Louvain in Brussels, Belgium, aimed to investigate premature senescence in BA and to assess senotherapies in a preclinical model of biliary cirrhosis.
“As there is a need for new therapies to avoid or delay liver transplantation in pediatric biliary cirrhosis, the aim of our work was to investigate premature senescence in BA through a multi-technical approach and to assess senotherapies in a preclinical model of biliary cirrhosis."
BA liver tissues were prospectively obtained at hepatoportoenterostomy (n=5) and liver transplantation (n=30) and compared to controls (n=10). Senescence was investigated through spatial whole transcriptome analysis, SA-β-gal activity, p16 and p21 expression, γ-H2AX and senescence-associated secretory phenotype (SASP). Human allogenic liver-derived progenitor cells (HALPC) or dasatinib and quercetin (D+Q) were administrated to two-month-old Wistar rats after bile duct ligation (BDL).
Advanced premature senescence was evidenced in BA livers from early stage and continued to progress until liver transplantation. Senescence and SASP were predominant in cholangiocytes, but also present in surrounding hepatocytes. HALPC but not D+Q reduced the early marker of senescence p21 in BDL rats and improved biliary injury (serum γGT and Sox9 expression) and hepatocytes mass loss (Hnf4a).
“BA livers displayed advanced cellular senescence at diagnosis that continued to progress until liver transplantation. HALPC reduced early senescence and improved liver disease in a preclinical model of BA, providing encouraging preliminary results regarding the use of senotherapies in pediatric biliary cirrhosis.”
Read the full study: DOI: https://doi.org/10.18632/aging.204700
Corresponding Author: Giulia Jannone
Corresponding Email: giulia.jannone@uclouvain.be
Keywords: senescence, senotherapy, liver, biliary cirrhosis, biliary atresia
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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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