The effects of purslane polysaccharide (POP1) and its five sulfated derivatives (POP1-s1, POP1-s2, POP1-s3, POP1-s4 and POP1-s5) on the human hepatoma cell line (HepG2) and cervical cancer cell line (Hela) were reported. Here, POP1 is linked to cervical carcinoma.