Highlights • Salmonella co-opts Wnt5a, INHBA, and GDF15 secreted from toxin-induced senescent cells • Wnt5a suppresses apoptosis, establishing senescence in response to typhoid toxin • Wnt5a and INHBA synergize, causing paracrine senescence in bystander cells • Salmonella hijacks secreted factors Wnt5a and GDF15 to enhance host cell invasion Summary Damage to our genome causes acute senescence in mammalian cells, which undergo growth arrest and release a senescence-associated secretory...