JUN Specifies the Local Differentiation and Maintenance of Pro-tumoral Monocyte-Derived Macrophages.

JUN is essential for the differentiation and maintenance of pro-tumoral monocyte-derived macrophages in tumor development, supporting blood vessel growth and tumor progression.

• Why it matters: Understanding how specific macrophage subtypes promote tumor growth can reveal targeted strategies to disrupt their pro-tumoral functions and improve cancer therapies.
• What they did: The study used single-cell transcriptomics and functional analyses to show that JUN is required for the development and sustenance of pro-tumoral TAMs, while immune-regulatory TAM functions are JUN-independent.
• The result: Findings highlight JUN as a key regulator of pro-tumoral TAMs, offering potential for selective therapies that target these macrophages without affecting immune-regulatory functions.