Cited by 67Pancreatitis Pathology and TreatmentTelomeres, Telomerase, and SenescencePancreatic and Hepatic Oncology Research

Senescence determines the fate of activated rat pancreatic stellate cells

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Fitzner, Brit, Müller, Sarah, Walther, Michael, Fischer, Madlen, Engelmann, Robby, Müller‐Hilke, Brigitte, Pützer, Brigitte M., Kreutzer, Michael +2 more·2012·Journal of Cellular and Molecular Medicine

Abstract

In chronic pancreatitis (CP), persistent activation of pancreatic stellate cells (PSC) converts wound healing into a pathological process resulting in organ fibrosis. Here, we have analysed senescence as a novel mechanism involved in the termination of PSC activation and tissue repair. PSC senescence was first studied in vitro by establishing long‐term cultures and by applying chemical triggers, using senescence‐associated β‐Galactosidase (SA β‐Gal) as a surrogate marker. Subsequently, susceptibility of PSC to immune cell‐mediated cytolysis was investigated employing cocultures. Using the model of dibutyltin dichloride‐induced CP in rats, appearance of senescent cells was monitored by immunohistochemistry and immunofluorescence, and correlated with the progression of tissue damage and repair, immune cell infiltration and fibrosis. The results indicated that long‐term culture and exposure of PSC to stressors (doxorubicin, H2O2 and staurosporine) induced senescence. Senescent PSC highly expressed CDKN 1A/p21, mdm2 and interleukin (IL)‐6, but displayed low levels of α‐smooth muscle actin. Senescence increased the susceptibility of PSC to cytolysis. In CP, the number of senescent cells correlated with the severity of inflammation and the extension of fibrosis. Areas staining positive for SA β‐Gal overlapped with regions of fibrosis and dense infiltrates of immune cells. Furthermore, a close physical proximity of immune cells and activated PSC was observed. We conclude that inflammation, PSC activation and cellular senescence are timely coupled processes which take place in the same microenvironment of the inflamed pancreas. Lymphocytes may play a dual‐specific role in pancreatic fibrogenesis, triggering both the initiation of wound healing by activating PSC, and its completion by killing senescent stellate cells.

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Crossref · 10.1111/j.1582-4934.2012.01573.x

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  • Induction of a senescence programme limits fibrosis progression in the pancreas.

    “Moreover, induction of a senescence programme limits fibrosis progression in the pancreas148.”

    From Cellular senescence in ageing: from mechanisms to therapeutic opportunities (2021) · cites this paper as [148]

    The Introduction (page unavailable) proposes a role for senescence in regulating pancreatic fibrogenesis, and the Discussion (page unavailable) describes it as a possible component of pancreatic wound healing. But the rat study reports that senescent cells correlated with the extent of fibrosis; it does not show that inducing senescence limits fibrosis progression in the pancreas. (LLM, conf=0.86)

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Authors
Fitzner, B., Müller, S., Walther, M., Fischer, M., Engelmann, R., Müller‐Hilke, B., Pützer, B. M., Kreutzer, M., Nizze, H., & Jaster, R.
Affiliations
  • Universitätsmedizin Rostock (DE)
  • University of Rostock (DE)
Corresponding author
Jaster, Robert
Venue
Journal of Cellular and Molecular Medicine
Publisher
Wiley
Published
2012-10-29
Volume
16
Issue
11
Pages
2620-2630
ISSN
  • 1582-1838 (ISSN-L)
  • 1582-4934
OpenAlex
W2015665286
Cited by
66
References
29
Citations by year
2026: 1 · 2025: 3 · 2024: 1 · 2023: 8 · 2022: 5 · 2021: 6 · 2020: 4 · 2019: 7 · 2018: 7 · 2017: 4 · 2016: 4 · 2015: 4 · 2014: 5 · 2013: 4 · 2012: 2
FWCI
5.22
Type
journal article
Language
en
Open access
Locations
  • Journal of Cellular and Molecular Medicine (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
Deutsche Forschungsgemeinschaft
Topics
  • Health Sciences › Medicine › Surgery › Pancreatitis Pathology and Treatment
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Health Sciences › Medicine › Oncology › Pancreatic and Hepatic Oncology Research
Keywords
cellular senescence, pancreatic stellate cells, chronic pancreatitis, pancreatic fibrosis, senescence-associated β-galactosidase, CDKN1A/p21, MDM2, interleukin-6, doxorubicin, hydrogen peroxide, staurosporine, dibutyltin dichloride, inflammation, tissue repair, lymphocytes
MeSH terms
Animals, beta-Galactosidase, Cells, Cultured, Doxorubicin, Fibrosis, Hydrogen Peroxide, Killer Cells, Natural, Male, Organotin Compounds, Pancreas, Rats, Inbred Lew, Spleen, Biomarkers, Gene Expression, Cellular Senescence, Coculture Techniques, Staurosporine, Pancreatitis, Chronic, Rats, Pancreatic Stellate Cells

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