Projects per year
Abstract / Description of output
Cellular senescence is a mechanism that provides an irreversible barrier to cell cycle progression
to prevent undesired proliferation. However, under pathological circumstances,
senescence can adversely affect organ function, viability and regeneration. We have developed
a mouse model of biliary senescence, based on the conditional deletion of Mdm2 in bile
ducts under the control of the Krt19 promoter, that exhibits features of biliary disease. Here
we report that senescent cholangiocytes induce profound alterations in the cellular and
signalling microenvironment, with recruitment of myofibroblasts and macrophages causing
collagen deposition, TGFβ production and induction of senescence in surrounding cholangiocytes
and hepatocytes. Finally, we study how inhibition of TGFβ-signalling disrupts the
transmission of senescence and restores liver function. We identify cellular senescence as a
detrimental mechanism in the development of biliary injury. Our results identify TGFβ as a
potential therapeutic target to limit senescence-dependent aggravation in human
cholangiopathies.
to prevent undesired proliferation. However, under pathological circumstances,
senescence can adversely affect organ function, viability and regeneration. We have developed
a mouse model of biliary senescence, based on the conditional deletion of Mdm2 in bile
ducts under the control of the Krt19 promoter, that exhibits features of biliary disease. Here
we report that senescent cholangiocytes induce profound alterations in the cellular and
signalling microenvironment, with recruitment of myofibroblasts and macrophages causing
collagen deposition, TGFβ production and induction of senescence in surrounding cholangiocytes
and hepatocytes. Finally, we study how inhibition of TGFβ-signalling disrupts the
transmission of senescence and restores liver function. We identify cellular senescence as a
detrimental mechanism in the development of biliary injury. Our results identify TGFβ as a
potential therapeutic target to limit senescence-dependent aggravation in human
cholangiopathies.
Original language | English |
---|---|
Article number | 1020 |
Journal | Nature Communications |
Volume | 9 |
Issue number | 1 |
DOIs | |
Publication status | Published - 9 Mar 2018 |
Keywords / Materials (for Non-textual outputs)
- Bile ducts
- Liver fibrosis
- Mechanisms of disease
- Senescence
Fingerprint
Dive into the research topics of 'Paracrine cellular senescence exacerbates biliary injury and impairs regeneration'. Together they form a unique fingerprint.Projects
- 3 Finished
Press/Media
-
CRM researchers have discovered a potential new target for the treatment of a type of liver disease that affects the bile ducts.
9/03/18
1 Media contribution
Press/Media: Press Release
Profiles
-
Juan-Carlos Acosta
- Deanery of Molecular, Genetic and Population Health Sciences - Visitor: Staff Non UK HEI
Person: Affiliated Independent Researcher
-
Tom Bird
- Deanery of Clinical Sciences - Personal Chair of Hepatobiliary Cancer
- Centre for Inflammation Research
Person: Academic: Research Active
-