AGR2 elevation

In vivo, rAGR2 accelerated tumor growth in melanoma and lung cancer models, accompanied by increased TAM accumulation, a shift toward M2 polarization, and suppressed T-cell function. AGR2 drives tumor progression by reprogramming TAMs toward an M2 phenotype and attenuating T-cell function via the CD98hc-xCT/p-ERK pathway, highlighting its potential as both a prognostic marker and a therapeutic target.

Ultimately, apoptotic cell death was heightened in AGR2 knockdown PDAC cells compared to the controls. Overall, these data reveal a new axis involving AGR2-ER stress-associated mitochondrial fission that could be targeted to improve PDAC patient outcomes.

CAFs drive the growth and metastasis of aggressive PNETs. The CXCR4-SDF1 axis may be a target for antistromal therapy in the treatment of PNET. This study clarifies mechanisms underlying PNET aggressiveness and may guide future therapeutic interventions targeting the tumor microenvironment.

These results suggested that although AGR2 enhanced cell proliferation by inhibiting p53 phosphorylation in TP53‑wild‑type ESCC, the same mechanism did not regulate cell functions in TP53‑mutant ESCC. Thus, AGR2 served an important role in ESCC progression and might be a useful prognostic marker in patients with TP53‑wild‑type ESCC.