Renin-Angiotensin System in Lung Tumor and Microenvironment Interactions

Area of Science:

• Oncology
• Cardiovascular Physiology
• Pulmonary Medicine

Background:

• The renin-angiotensin system (RAS) is traditionally linked to cardiovascular regulation.
• Emerging evidence highlights the RAS's diverse roles beyond the cardiovascular system, particularly in pulmonary physiology.
• Local RAS pathways significantly influence lung biology.

Purpose of the Study:

• To review the literature on the renin-angiotensin system's role in the lung tumor microenvironment.
• To explore the potential of RAS blockade as an adjuvant therapy for lung cancer.

Main Methods:

• Comprehensive literature review of studies investigating the RAS in lung cancer.
• Analysis of angiotensin peptides' functions in key cancer processes like proliferation, inflammation, hypoxia, and angiogenesis.
• Discussion of clinical implications of RAS blockade in lung cancer treatment.

Main Results:

• Angiotensin peptides are implicated in critical biological processes within the lung tumor microenvironment.
• These processes include cell proliferation, immunoinflammatory responses, hypoxia, and angiogenesis.
• The RAS influences key pathways relevant to lung cancer progression.

Conclusions:

• The renin-angiotensin system is mechanistically involved in lung cancer.
• Targeting the RAS may represent a promising adjuvant therapeutic strategy for lung cancer.
• Further clinical investigation into RAS blockade for lung cancer is warranted.