Phospho-Stat1 (Ser727) (D3B7) Rabbit mAb from Cell Signaling Technology

Yes, the Phospho-Stat1 (Ser727) antibody has been utilized in studies examining the regulation of PD-L1 expression in cancer cells. For instance, research has shown that interferon-gamma induces PD-L1 expression in ovarian cancer cells, which is associated with increased levels of phosphorylated STAT1 at Ser727. This suggests that the antibody can be instrumental in investigating the JAK1/STAT1 signaling pathway's role in immune checkpoint regulation in cancer.

The Phospho-Stat1 (Ser727) antibody has been shown to work effectively in immunohistochemistry (IHC) applications. It has been used to analyze phosphorylated STAT1 levels in various cancer tissues, including breast cancer, where its expression correlates with PD-L1 and HLA class I expression, indicating its utility in assessing tumor microenvironments.

This antibody is reactive with multiple species, including humans, mice, rats, and non-human primates. It specifically recognizes the phosphorylated form of STAT1 at Ser727, making it suitable for comparative studies across these species in various biological contexts.

The Phospho-Stat1 (Ser727) antibody has been cited in studies investigating the immune response mechanisms, particularly in the context of interferon signaling. For example, it has been used to demonstrate that phosphorylated STAT1 is crucial for the expression of pro-inflammatory cytokines and immune checkpoint molecules, thereby highlighting its role in modulating immune responses during inflammation and cancer progression.