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Updated: Dec 1, 2025

Evaluating Autophagy Levels in Two Different Pancreatic Cell Models Using LC3 Immunofluorescence
Published on: April 28, 2023
Regulation and function of autophagy in pancreatic cancer
Jingbo Li1, Xin Chen1, Rui Kang1
1Department of Surgery, UT Southwestern Medical Center, Dallas, Texas, USA.
Abstract:
Oncogenic KRAS mutation-driven pancreatic ductal adenocarcinoma is currently the fourth-leading cause of cancer-related deaths in the United States. Macroautophagy (hereafter "autophagy") is one of the lysosome-dependent degradation systems that can remove abnormal proteins, damaged organelles, or invading pathogens by activating dynamic membrane structures (e.g., phagophores, autophagosomes, and autolysosomes). Impaired autophagy (including excessive activation and defects) is a pathological feature of human diseases, including pancreatic cancer. However, dysfunctional autophagy has many types and plays a complex role in pancreatic tumor biology, depending on various factors, such as tumor stage, microenvironment, immunometabolic state, and death signals. As a modulator connecting various cellular events, pharmacological targeting of nonselective autophagy may lead to both good and bad therapeutic effects. In contrast, targeting selective autophagy could reduce potential side effects of the drugs used. In this review, we describe the advances and challenges of autophagy in the development and therapy of pancreatic cancer.Abbreviations: AMPK: AMP-activated protein kinase; CQ: chloroquine; csc: cancer stem cells; DAMP: danger/damage-associated molecular pattern; EMT: epithelial-mesenchymal transition; lncRNA: long noncoding RNA; MIR: microRNA; PanIN: pancreatic intraepithelial neoplasia; PDAC: pancreatic ductal adenocarcinoma; PtdIns3K: phosphatidylinositol 3-kinase; SNARE: soluble NSF attachment protein receptor; UPS: ubiquitin-proteasome system.
Insights
Autophagy, a cellular process, plays a complex role in pancreatic cancer development and therapy. Targeting selective autophagy offers a promising strategy to mitigate side effects in pancreatic cancer treatment.
Area of Science:
- Cell Biology
- Cancer Research
- Molecular Oncology
Background:
- Pancreatic ductal adenocarcinoma (PDAC) is a leading cause of cancer death, driven by KRAS mutations.
- Macroautophagy (autophagy) is a cellular degradation system crucial for maintaining cellular homeostasis.
- Dysfunctional autophagy is implicated in PDAC pathogenesis, with complex roles influenced by tumor stage and microenvironment.
Purpose of the Study:
- To review current advances and challenges in understanding autophagy's role in pancreatic cancer.
- To explore the therapeutic potential of targeting autophagy in PDAC treatment.
Main Methods:
- Literature review of studies on autophagy in pancreatic cancer.
- Analysis of the dual role of autophagy in PDAC development and progression.
- Evaluation of pharmacological strategies targeting autophagy.
Main Results:
- Autophagy's role in PDAC is context-dependent, varying with tumor stage, microenvironment, and immunometabolic state.
- Nonselective autophagy inhibition can have both beneficial and detrimental effects in PDAC therapy.
- Selective autophagy targeting presents a potential strategy to improve therapeutic outcomes with reduced side effects.
Conclusions:
- Autophagy is a critical but complex player in pancreatic cancer.
- Targeting selective autophagy pathways may offer a more precise therapeutic approach for PDAC.
- Further research is needed to fully elucidate and exploit autophagy's therapeutic potential in pancreatic cancer.
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