Transcriptomic analysis reveals the regulatory role of LIPE in lipid metabolism and tumor-associated macrophage polarization in breast cancer.

Researchers have discovered important information about how breast cancer cells process fats and interact with immune cells. This laboratory study examined a protein called LIPE (Lipase E) that appears to be abnormally low in breast cancer tissues. Scientists found that when LIPE levels are reduced, cancer cells change how they handle fats, which in turn affects immune cells called macrophages that normally help protect the body.

Using breast cancer cell lines and animal models, researchers demonstrated that restoring normal LIPE levels slowed cancer cell growth, reduced their ability to spread, and changed how tumor cells metabolize fatty acids. The protein also influenced macrophages to shift away from a cancer-promoting state toward a more cancer-fighting state. Specifically, LIPE increased healthy fat breakdown products while decreasing cancer-promoting fat-building enzymes.

While this study provides valuable insights into breast cancer biology, it does not directly involve acupuncture or traditional Chinese medicine. However, understanding how breast cancer develops at the molecular level helps researchers identify potential therapeutic targets. For breast cancer patients considering complementary approaches, acupuncture has been studied separately for managing treatment side effects like chemotherapy-induced nausea, pain, and fatigue. Some research suggests acupuncture may help support immune function and reduce inflammation, though the mechanisms differ from those studied in this laboratory research.

This basic science study highlights the complex relationship between metabolism and immunity in cancer, which may eventually inform integrative treatment strategies. Breast cancer patients interested in acupuncture as supportive care should consult with a licensed acupuncturist experienced in oncology support.

This transcriptomic analysis investigated LIPE's role in breast cancer lipid metabolism and tumor microenvironment modulation. Researchers analyzed GEO database transcriptomic data, validated findings through RT-qPCR, Western blot, and in vivo models. LIPE expression was significantly downregulated in BC tissues and cell lines. Functional studies demonstrated that LIPE overexpression inhibited BC cell proliferation, invasion, and migration while increasing free fatty acid and lipoprotein lipase levels and decreasing FASN and ACLY expression. Critically, LIPE modulated tumor-associated macrophage polarization, reducing CD206-positive M2-like macrophages and M2-associated cytokines (IL-10, TGF-β1) while increasing pro-inflammatory IL-1β. In vivo experiments confirmed reduced tumor burden and Ki-67 expression with LIPE overexpression. This study establishes LIPE as a regulator linking altered lipid metabolism to immunosuppressive macrophage polarization in breast cancer. While not directly applicable to acupuncture practice, understanding metabolic-immune interactions may inform integrative approaches addressing systemic inflammation and immune dysfunction in oncology patients.