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Mimicking and Manipulating Pancreatic Acinar-to-Ductal Metaplasia in 3-dimensional Cell Culture
Published on: February 11, 2019
Oncogenic KRAS signalling in pancreatic cancer
S Eser1, A Schnieke2, G Schneider3
11] Department of Internal Medicine II, Klinikum rechts der Isar, Technische Universität München, Ismaningerstr. 22, 81675 München, Germany [2] German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany.
Abstract:
Pancreatic ductal adenocarcinoma (PDAC) is almost universally fatal. The annual number of deaths equals the number of newly diagnosed cases, despite maximal treatment. The overall 5-year survival rate of <5% has remained stubbornly unchanged over the last 30 years, despite tremendous efforts in preclinical and clinical science. There is unquestionably an urgent need to further improve our understanding of pancreatic cancer biology, treatment response and relapse, and to identify novel therapeutic targets. Rigorous research in the field has uncovered genetic aberrations that occur during PDAC development and progression. In most cases, PDAC is initiated by oncogenic mutant KRAS, which has been shown to drive pancreatic neoplasia. However, all attempts to target KRAS directly have failed in the clinic and KRAS is widely assumed to be undruggable. This has led to intense efforts to identify druggable critical downstream targets and nodes orchestrated by mutationally activated KRAS. This includes context-specific KRAS effector pathways, synthetic lethal interaction partners and KRAS-driven metabolic changes. Here, we review recent advances in oncogenic KRAS signalling and discuss how these might benefit PDAC treatment in the future.
Insights
Pancreatic cancer remains deadly, with poor survival rates. Research focuses on targeting KRAS pathways to find new treatments for pancreatic ductal adenocarcinoma (PDAC).
Area of Science:
- Oncology
- Molecular Biology
- Cancer Genetics
Background:
- Pancreatic ductal adenocarcinoma (PDAC) has a dismal prognosis with a 5-year survival rate below 5%.
- Despite extensive research, current treatments for PDAC have not significantly improved survival rates over the past three decades.
- Oncogenic KRAS mutations are central to PDAC initiation and progression, but direct targeting of KRAS has proven clinically unsuccessful.
Purpose of the Study:
- To review recent advancements in understanding oncogenic KRAS signaling in PDAC.
- To explore potential therapeutic strategies targeting downstream effectors, synthetic lethal interactions, and metabolic alterations driven by KRAS.
- To identify novel therapeutic targets for improving PDAC treatment outcomes.
Main Methods:
- Literature review of recent research on KRAS signaling pathways in pancreatic cancer.
- Analysis of genetic aberrations and molecular mechanisms involved in PDAC development.
- Discussion of preclinical and clinical findings related to KRAS-driven pathways.
Main Results:
- KRAS is a key driver in PDAC, but direct inhibition has failed.
- Research is identifying druggable downstream targets and pathways regulated by mutant KRAS.
- Emerging strategies focus on KRAS effector pathways, synthetic lethality, and metabolic vulnerabilities.
Conclusions:
- Targeting KRAS-driven pathways, rather than KRAS itself, offers promising therapeutic avenues for PDAC.
- Further research into KRAS signaling networks is crucial for developing effective treatments.
- Novel therapeutic strategies hold potential to improve outcomes for patients with pancreatic cancer.
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