Mar. Drugs 2012, 10(6), 1212-1224; doi:10.3390/md10061212
Article

Mycalamide A Shows Cytotoxic Properties and Prevents EGF-Induced Neoplastic Transformation through Inhibition of Nuclear Factors

1,2,* email, 1email, 1email, 1email, 2email, 1,3,†email and 2,†email
Received: 31 March 2012; in revised form: 15 May 2012 / Accepted: 21 May 2012 / Published: 30 May 2012
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Mycalamide A, a marine natural compound previously isolated from sponges, is known as a protein synthesis inhibitor with potent antitumor activity. However, the ability of this compound to prevent malignant transformation of cells has never been examined before. Here, for the first time, we report the isolation of mycalamide A from ascidian Polysincraton sp. as well as investigation of its cancer preventive properties. In murine JB6 Cl41 P+ cells, mycalamide A inhibited epidermal growth factor (EGF)-induced neoplastic transformation, and induced apoptosis at subnanomolar or nanomolar concentrations. The compound inhibited transcriptional activity of the oncogenic nuclear factors AP-1 and NF-κB, a potential mechanism of its cancer preventive properties. Induction of phosphorylation of the kinases MAPK p38, JNK, and ERK was also observed at high concentrations of mycalamide A. The drug shows promising potential for both cancer-prevention and cytotoxic therapy and should be further developed.
Keywords: mycalamide A; Polysincraton sp.; cancer preventive activity; apoptosis; AP-1; NF-κB; p53
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MDPI and ACS Style

Dyshlovoy, S.A.; Fedorov, S.N.; Kalinovsky, A.I.; Shubina, L.K.; Bokemeyer, C.; Stonik, V.A.; Honecker, F. Mycalamide A Shows Cytotoxic Properties and Prevents EGF-Induced Neoplastic Transformation through Inhibition of Nuclear Factors. Mar. Drugs 2012, 10, 1212-1224.

AMA Style

Dyshlovoy SA, Fedorov SN, Kalinovsky AI, Shubina LK, Bokemeyer C, Stonik VA, Honecker F. Mycalamide A Shows Cytotoxic Properties and Prevents EGF-Induced Neoplastic Transformation through Inhibition of Nuclear Factors. Marine Drugs. 2012; 10(6):1212-1224.

Chicago/Turabian Style

Dyshlovoy, Sergey A.; Fedorov, Sergey N.; Kalinovsky, Anatoly I.; Shubina, Larisa K.; Bokemeyer, Carsten; Stonik, Valentin A.; Honecker, Friedemann. 2012. "Mycalamide A Shows Cytotoxic Properties and Prevents EGF-Induced Neoplastic Transformation through Inhibition of Nuclear Factors." Mar. Drugs 10, no. 6: 1212-1224.

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