Related Experiment Video
Updated: May 21, 2026
05:44
Isolation of Proximal Fluids to Investigate the Tumor Microenvironment of Pancreatic Adenocarcinoma
Published on: November 5, 2020
Changes in connexin43 expression and localization during pancreatic cancer progression
Joell L Solan1, Sunil R Hingorani, Paul D Lampe
1Fred Hutchinson Cancer Research Center, 1100 Fairview Avenue North, M5C800, Box 19024, Seattle, WA 98109, USA.
The Journal of Membrane Biology
|June 26, 2012
Summary
Gap junction protein connexin43 (Cx43) expression and localization change during pancreatic cancer progression. These alterations suggest Cx43 may mediate stromal and epithelial cell interactions in pancreatic ductal adenocarcinoma.
Area of Science:
- Oncology
- Cell Biology
- Biochemistry
Background:
- Gap junctions and gap junction communication are vital for tissue organization and remodeling.
- Dysregulation of these processes is implicated in cancer progression.
- Connexin43 (Cx43) is a key gap junction protein.
Purpose of the Study:
- To investigate the role of Cx43 in pancreatic ductal adenocarcinoma (PDAC) progression.
- To characterize the molecular and histological changes of Cx43 during PDAC development.
Main Methods:
- Utilized a mouse model of PDAC with targeted Kras(G12D) expression.
- Examined evolving Cx43 expression and localization using molecular and histological techniques.
- Assessed Cx43 phosphorylation through immunoblot analysis.
Main Results:
- Cx43 expression increased and localization became more widespread over time in PDAC.
- Early Cx43 localization was primarily basolateral in duct cells; later, it associated with the stroma.
- Cx43 phosphorylation patterns were altered during tumorigenesis.
Conclusions:
- Cx43 expression and localization dynamics are altered during PDAC progression.
- These changes suggest a role for Cx43 in mediating stromal-epithelial cell interactions in PDAC.
- Gap junctions and Cx43 may be modulators of carcinogenesis in the pancreas.
