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A Proximal Culture Method to Study Paracrine Signaling Between Cells
Published on: August 28, 2018
Purinergic Signaling in Ovarian Carcinoma
Angélica Sofía Martínez-Ramírez1, José David Nuñez-Ríos2,3, Ana Patricia Juárez-Mercado2
1Laboratorio de Cultivo de Células Animales, Universidad de Papaloapan, Campus Tuxtepec, Circuito Central Colonia Parque Industrial, Tuxtepec Oaxaca, México.
Abstract:
Ovarian carcinoma (OC) is the most lethal gynecological cancer worldwide. Around 95% of patients exhibit recurrence five years after treatment; 80% experience recurrence within 18 months after first-line treatment, and progression-free survival rates have not changed over the past 40 years. New therapeutic approaches are imperative to face this complex disease. The purinergic system is a newly recognized element of the tumor microenvironment (TME), as it exhibits a pro-tumor role. Tumor cells release adenosine triphosphate (ATP) into the TME, where it exerts autocrine-paracrine actions that regulate several processes, including the induction of a metastatic phenotype, cell proliferation, and metabolic adaptations. In the extracellular milieu, ATP is converted to adenosine (ADO) by ectonucleotidases (CD39 and CD73), thereby significantly blocking the anti-tumor immune response through interactions with various immune cells. Recent analyses have focused on the diversity and plasticity of purinergic signaling in OC. This review outlines the disease, explains basic concepts of purinergic signaling, and summarizes experimental evidence that indicates purinergic elements may serve as potential targets for novel therapies to overcome OC.
Insights
Ovarian carcinoma (OC) has high recurrence rates, necessitating new treatments. Targeting the purinergic system, which promotes tumor growth and blocks immune responses, offers a promising therapeutic strategy for this deadly gynecological cancer.
Area of Science:
- Oncology
- Immunology
- Molecular Biology
Background:
- Ovarian carcinoma (OC) is a leading cause of cancer death globally, characterized by high recurrence rates and stagnant progression-free survival.
- The tumor microenvironment (TME) plays a critical role in OC progression, with the purinergic system emerging as a significant pro-tumor factor.
Purpose of the Study:
- To review the role of the purinergic system in ovarian carcinoma.
- To explore purinergic signaling as a potential therapeutic target for overcoming treatment resistance in OC.
Main Methods:
- Literature review of existing studies on ovarian carcinoma and purinergic signaling.
- Analysis of experimental evidence linking purinergic elements to OC progression and immune evasion.
Main Results:
- Tumor cells release adenosine triphosphate (ATP) in the TME, promoting metastasis, proliferation, and metabolic adaptation.
- Ectonucleotidases (CD39, CD73) convert ATP to adenosine (ADO), which suppresses anti-tumor immunity.
- Purinergic signaling exhibits diversity and plasticity in OC, influencing disease progression.
Conclusions:
- The purinergic system, including ATP and adenosine, significantly impacts OC development and immune evasion.
- Targeting purinergic signaling pathways presents a novel therapeutic avenue for improving outcomes in ovarian carcinoma.
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