Abstract
Acute Lymphoblastic Leukemia (ALL) is the most common cancer in children worldwide and is characterized by the overproduction of undifferentiated lymphoblasts in bone marrow. The treatment of first choice is the enzyme L-asparaginase (ASNase) isolated from Escherichia coli or Erwinia chrysanthemi. Its mechanism of action is to hydrolyse plasma L-asparagine to aspartic acid and ammonia. Le…