Signal regulatory protein α is associated with tumor‐polarized macrophages phenotype switch and plays a pivotal role in tumor progression
Yu‐fei Pan, Ye‐xiong Tan, Min Wang, Jian Zhang, Bo Zhang, Chun Yang, Zhi‐wen Ding, Li‐wei Dong, Hong‐yang Wang – 16 March 2013 – Macrophages (Mψ) are the major component of infiltrating leukocytes in tumors and exhibit distinct phenotypes according to the microenvironment. We have recently found that signal regulatory protein α (SIRPα), the inhibitory molecule expressed on myeloid cells, plays a critical role in controlling innate immune activation.