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Concept
Tecemotide
Résumé
Tecemotide (INN; emepepimut-S (USAN); formerly known as BLP25 or EMD 531444) is a synthetic lipopeptide that is used as antigen in an investigational therapeutic cancer vaccine (formerly known as Stimuvax, L-BLP25, BLP25 liposomal vaccine, or BLP25 liposome vaccine). The investigational therapeutic cancer vaccine is designed to induce a cellular immune response to cancer cells that express MUC1, a glycoprotein antigen that is widely over-expressed on common cancers such as lung cancer, breast cancer, prostate cancer, and colorectal cancer. The cellular immune response may lead to a rejection of tumor tissue expressing the MUC1 antigen.
Tecemotide was developed – until Clinical trial phase II – by the Canadian biotech company Biomira Inc., which changed its company name to Oncothyreon Inc. in 2007. Oncothyreon is now located in Seattle, Washington, and it changed its name to SGEN after a merger and acquisition in March 2018.
In 2001, Merck KGaA, of Darmstadt, Germany, entered into a collaboration and supply agreement with Biomira. In 2007, Merck KGaA acquired the exclusive worldwide marketing rights from Biomira, and Merck KGaA has since then been entirely responsible for the further clinical development of tecemotide. In 2008, Merck KGaA acquired the manufacturing rights for tecemotide from Oncothyreon. In 2011, Ono Pharmaceutical Company, of Japan, acquired a co-development and co-marketing license for tecemotide in Japan; Ono paid Merck KGaA 5 million euros.
Tecemotide is a synthetic lipopeptide that is 27 amino acids long. Its molecular formula is , and its amino acid sequence is S T A PPAH G VTSAPDTRPAPGSTAPPKG. The first 25 amino acids of tecemotide are derived from the mucin 1 (MUC1, carcinoma-associated mucin, episialin, or CD227) sequence. The 26th modified amino acid, K, is palmityl-lysine (N6-(1-oxohexadecyl)-L-lysine), and the 27th is glycine.
Source officielle
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