NCI Drug Dictionary

  • Resize font
  • Print
  • Email
  • Facebook
  • Twitter
  • Google+
  • Pinterest

The NCI Drug Dictionary contains technical definitions and synonyms for drugs/agents used to treat patients with cancer or conditions related to cancer. Each drug entry includes links to check for clinical trials listed in NCI's List of Cancer Clinical Trials.

erythrocyte-encapsulated L-asparaginase suspension
A suspension of erythrocytes encapsulating L-asparaginase with potential antineoplastic activity. Upon administration of erythrocyte-encapsulated L-asparaginase suspension, L-asparagine is hydrolyzed to L-aspartic acid and ammonia in plasma, thereby depleting tumor cells of asparagine. Due to low asparagine synthetase activity in tumor cells, de novo synthesis of asparagine is suppressed within tumor cells. Shortage of asparagine prevents synthesis of important proteins necessary for tumor cell growth. Encapsulation of asparaginase in erythrocytes decreases the immunogenicity of exogenous protein, enhances its circulation time and may limit toxicity.