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Published on: June 14, 2024
Cancer Microenvironment and Endoplasmic Reticulum Stress Response
Claudia Giampietri1, Simonetta Petrungaro1, Silvia Conti1
1Istituto Pasteur-Fondazione Cenci Bolognetti, Department of Anatomy, Histology, Forensic Medicine and Orthopedics, Section of Histology and Medical Embryology, Sapienza University of Rome, 00161 Rome, Italy.
Tumor cells activate the unfolded protein response (UPR) under stress, aiding their survival and proliferation. This review details UPR mechanisms promoting cancer growth, focusing on prostate cancer and melanoma.
Area of Science:
- Oncology
- Molecular Biology
- Cellular Stress Response
Background:
- Tumor cells face various stressful conditions like hypoxia and nutrient deprivation.
- These stresses can limit tumor growth but also trigger adaptive responses.
- The unfolded protein response (UPR) is a key cellular pathway activated by such stresses.
Purpose of the Study:
- To review the molecular mechanisms of UPR activation in cancer.
- To explain how UPR promotes cancer cell survival and proliferation.
- To discuss the role of UPR in specific cancers like prostate cancer and melanoma.
Main Methods:
- Literature review of studies on UPR and cancer.
- Analysis of molecular pathways involved in UPR.
- Case studies of UPR in prostate cancer and melanoma.
Main Results:
- UPR is activated by diverse tumor microenvironment stresses.
- UPR activation is generally cytoprotective, promoting cancer cell survival.
- UPR contributes to tumor growth and adaptation to harsh conditions.
Conclusions:
- UPR is a critical factor in tumor growth and adaptation.
- Understanding UPR mechanisms offers potential therapeutic targets in oncology.
- UPR plays a significant role in the progression of prostate cancer and melanoma.
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