Isolation of anticancer lactoferrin fragments.
(A) SDS-PAGE of
trypsin (T) and pepsin (P) digested lactoferrin. Fragments with positive
anticancer activity are indicated with arrows (M, marker; T, Trypsin;
P, Pepsin; 1, rtHLF4; 2, rteHLF1; 3, rpHLF2). (B) Anticancer activity
of trypsin-digested lactoferrin fragments. (C) Anticancer activity
of pepsin-digested lactoferrin fragments. (D) Isolated lactoferrin
fragment stability at 37 °C. (E) Purified lactoferrin fragment
stability under different pH after 12 h. (F) The sequence length of
isolated fragments compared to lactoferrin and other lactoferrin-derived
fragments (*P ≤ 0.0083 after Bonferroni correction;
each group performed in triplicate).