TY - JOUR
T1 - Effects of nitrogen mustards on the incorporation of amino acids into the proteins of tumors and other tissues; the mustard derivative of serine
AU - Nyhan, William L.
AU - Loh Hoehn-Saric, Evanne
N1 - Funding Information:
* Aided by grants from the U.S. Public Health Service (C4493) and the Leukemia Society. t Faculty Research Associate of the American Cancer Society. $ Research done during the tenure of U.S. Public Health Service Medical Student Summer Scholar-shtps.
PY - 1963/5
Y1 - 1963/5
N2 - The effects of O-[N-di-(2-chloroethyl)carbamoyl]-dl-serine, a nitrogen mustard derivative of serine, on the incorporation of amino acids into proteins have been studied in rats bearing the Walker 256 carcinosarcoma. The intraperitoneal injection of 1,500 mg of the compound/kg regularly induced carcinostasis and occasionally produced complete regression of the tumor, while producing minimal systemic toxicity. These effects were accompanied by an inhibition of the incorporation of amino acids into the protein of the tumor. The degree of inhibition was always greater in the nuclear proteins than in the cytoplasmic proteins, suggesting a predominantly antinuclear action which is consistent with biologic information about alkylating agents. It is proposed that these findings are related to the mechanism of action of these compounds. The inhibition observed after administration of serine mustard occurred only in the tumor, while other mustards such as HN2 and uracil mustard have been shown to inhibit these processes in a variety of nontumor tissues. Serine mustard was as effective in the inhibition of the formation of proteins from methionine as from serine. These data suggest that the compound acts not as an analogue inhibitor but as an alkylating agent with altered tissue specificity.
AB - The effects of O-[N-di-(2-chloroethyl)carbamoyl]-dl-serine, a nitrogen mustard derivative of serine, on the incorporation of amino acids into proteins have been studied in rats bearing the Walker 256 carcinosarcoma. The intraperitoneal injection of 1,500 mg of the compound/kg regularly induced carcinostasis and occasionally produced complete regression of the tumor, while producing minimal systemic toxicity. These effects were accompanied by an inhibition of the incorporation of amino acids into the protein of the tumor. The degree of inhibition was always greater in the nuclear proteins than in the cytoplasmic proteins, suggesting a predominantly antinuclear action which is consistent with biologic information about alkylating agents. It is proposed that these findings are related to the mechanism of action of these compounds. The inhibition observed after administration of serine mustard occurred only in the tumor, while other mustards such as HN2 and uracil mustard have been shown to inhibit these processes in a variety of nontumor tissues. Serine mustard was as effective in the inhibition of the formation of proteins from methionine as from serine. These data suggest that the compound acts not as an analogue inhibitor but as an alkylating agent with altered tissue specificity.
UR - http://www.scopus.com/inward/record.url?scp=50549180418&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=50549180418&partnerID=8YFLogxK
U2 - 10.1016/0006-2952(63)90225-9
DO - 10.1016/0006-2952(63)90225-9
M3 - Article
C2 - 13939301
AN - SCOPUS:50549180418
SN - 0006-2952
VL - 12
SP - 457
EP - 464
JO - Biochemical Pharmacology
JF - Biochemical Pharmacology
IS - 5
ER -