Plicamycin (INN, also known as mithramycin; trade name Mithracin) is an antineoplastic antibiotic produced by Streptomyces plicatus. It is an RNA synthesis inhibitor.[1] The manufacturer discontinued production in 2000. Several different structures are currently reported in different places all with the same chromomycin core, but with different stereochemistry in the glycoside chain, a 1999 study has re-investigated the compound and proposed a revised structure.[2]

Uses

Plicamycin has been used in the treatment of testicular cancer,[3][4] Paget's disease of bone,[5][6] and, rarely, the management of hypercalcemia.

Plicamycin has been tested in chronic myeloid leukemia.[7]

Plicamycin is currently used in multiple areas of research, including cancer cell apoptosis[8] and as a metastasis inhibitor.[9]

One elucidated pathway shows it interacts by cross-binding chromatin GC-rich promoter motifs, thereby inhibiting gene transcription.[10]

References

  1. ^ "Mithramycin A". Fermentek.
  2. ^ Wohlert SE, Künzel E, Machinek R, Méndez C, Salas JA, Rohr J (January 1999). "The structure of mithramycin reinvestigated". Journal of Natural Products. 62 (1): 119–121. doi:10.1021/np980355k. PMID 9917296.
  3. ^ Kennedy BJ, Torkelson JL (May 1995). "Long-term follow-up of stage III testicular carcinoma treated with mithramycin (plicamycin)". Medical and Pediatric Oncology. 24 (5): 327–328. doi:10.1002/mpo.2950240511. PMID 7700186.
  4. ^ Brown JH, Kennedy BJ (January 1965). "Mithramycin in the Treatment of Disseminated Testicular Neoplasms". The New England Journal of Medicine. 272 (3): 111–118. doi:10.1056/NEJM196501212720301. PMID 14224214.
  5. ^ Hall TJ, Schaeublin M, Chambers TJ (September 1993). "The majority of osteoclasts require mRNA and protein synthesis for bone resorption in vitro". Biochemical and Biophysical Research Communications. 195 (3): 1245–1253. doi:10.1006/bbrc.1993.2178. PMID 8216256.
  6. ^ Remsing LL, Bahadori HR, Carbone GM, McGuffie EM, Catapano CV, Rohr J (July 2003). "Inhibition of c-src transcription by mithramycin: structure-activity relationships of biosynthetically produced mithramycin analogues using the c-src promoter as target". Biochemistry. 42 (27): 8313–8324. doi:10.1021/bi034091z. PMID 12846580.
  7. ^ Dutcher JP, Coletti D, Paietta E, Wiernik PH (May 1997). "A pilot study of alpha-interferon and plicamycin for accelerated phase of chronic myeloid leukemia". Leukemia Research. 21 (5): 375–380. doi:10.1016/S0145-2126(96)00108-7. PMID 9225062.
  8. ^ Lee TJ, Jung EM, Lee JT, Kim S, Park JW, Choi KS, Kwon TK (November 2006). "Mithramycin A sensitizes cancer cells to TRAIL-mediated apoptosis by down-regulation of XIAP gene promoter through Sp1 sites". Molecular Cancer Therapeutics. 5 (11): 2737–2746. doi:10.1158/1535-7163.MCT-06-0426. PMID 17121920.
  9. ^ Lin RK, Hsu CH, Wang YC (November 2007). "Mithramycin A inhibits DNA methyltransferase and metastasis potential of lung cancer cells". Anti-Cancer Drugs. 18 (10): 1157–1164. doi:10.1097/CAD.0b013e3282a215e9. PMID 17893516.
  10. ^ Majee S, Chakrabarti A (May 1999). "Membrane interaction of an antitumor antibiotic, mithramycin, with anionic phospholipid vesicles". Biochemical Pharmacology. 57 (9): 981–987. doi:10.1016/S0006-2952(98)00374-8. PMID 10796068.

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