TLR3 and neoplasm: We then found that activation of TLR3 signaling in cancerous cells by poly I:C made human and murine cancer cells become sensitive to protein synthesis inhibitor cycloheximide (CHX)-induced apoptosis, and blockade of TLR3 recognition with anti-TLR3 antibody greatly attenuated the apoptosis-improving effects of poly I:C on tumor cells.