p16Ink4a and p21Cip1/Waf1 promote tumour growth by enhancing myeloid-derived suppressor cells chemotaxis

Both p16Ink4a and p21Cip1/Waf1 are known oncosuppressors and have a role in senescence. Here, the authors show a pro-tumorigenic role for these two proteins: high expression in myeloid-derived suppressor cells stimulates their chemotactic function, favouring tumour progression.