PMID- 2692843 OWN - NLM STAT- MEDLINE DCOM- 19900302 LR - 20220330 IS - 0743-4863 (Print) IS - 0743-4863 (Linking) VI - 6 IP - 3 DP - 1989 TI - Tumoritropic and lymphotropic principles of macromolecular drugs. PG - 193-210 AB - The advantages and disadvantages of macromolecular drugs, particularly on synthetic polymer-protein conjugates, are described in this article. Improvements in protein drugs, after tailoring with polymers, are as follows: increased plasma half-life, loss of antigenecity, lymphotropism, and, especially, preferred tumor-targeting efficiency and long-term retention in the tumor tissues. Hydrophobic character can make a drug also possible for oily formulation. Explained are the rationales of macromolecular drugs to preferential delivery to the tumor and lymphatic tissues based on our finding on pathological/anatomical differences of the blood and lymphatic vasculatures. Enhanced vascular permeability, which facilitates the macromolecular drug-leakage out of the blood vessel, is discussed. A model compound, which is discussed in detail, is smancs--styrene-co-maleic acid conjugated neocarzinostatin (MW 16 K). Some data on polymer-conjugated enzymes as potential therapeutic agents are described as well. FAU - Maeda, H AU - Maeda H AD - Department of Microbiology, Kumamoto University Medical School, Japan. FAU - Matsumura, Y AU - Matsumura Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review PL - United States TA - Crit Rev Ther Drug Carrier Syst JT - Critical reviews in therapeutic drug carrier systems JID - 8511159 RN - 0 (Antineoplastic Agents) SB - IM MH - Animals MH - Antineoplastic Agents/*administration & dosage MH - Humans MH - Lymphatic System/*drug effects MH - Neoplasms/blood supply/*drug therapy MH - Regional Blood Flow/drug effects RF - 55 EDAT- 1989/01/01 00:00 MHDA- 1989/01/01 00:01 CRDT- 1989/01/01 00:00 PHST- 1989/01/01 00:00 [pubmed] PHST- 1989/01/01 00:01 [medline] PHST- 1989/01/01 00:00 [entrez] PST - ppublish SO - Crit Rev Ther Drug Carrier Syst. 1989;6(3):193-210.