Function
Melanoma-associated antigen (MAGE) are produced by tumor cells and are recognized by cytotoxic T lymphocytes[1]. Many such antigens have been identified and are classified into 2 groups with group I called cancer/testis antigens[2]. The loss of MAGE expression is observed in primary melanoma[3].
Disease
Relevance
The expression of MAGE-A1 can be a marker for the prediction of resistance to taxan-based chemotherapy in pations with gastric cancer[4]. Assessment of MAGE may provide stratification factor for active-specific immunotherapy[5].
Structural highlights
The 3D structure of the complex between MAGE-A4 and the peptide inhibitor shows the peptide to bind in a cyclic conformation. The peptide is anchored by 3 of its residues interacting with MAGE hydrophobic pocket. MAGE residue M161 makes Met-aromatic interactions with 2 of the peptide Tyr residues. Additional H-bonds are formed between the peptide inhibitor and MAGE[6].
3D structures of melanoma-associated antigen
Updated on 18-December-2025
MAGE; Domains: MAGE homology 101-317; PWWP 405-538
3pmi – hMAGE1 PWWP domain (mutant) – human
4v0p – hMAGEA3 MAGE homology domain
9bd2 – hMAGEA3 MAGE homology domain + KL861
8t9a – hMAGEA3 MAGE homology domain + DDB1-DCAF12 – Cryo EM
2wa0 – hMAGEA4 MAGE homology domain
7uoa – hMAGEA4 MAGE homology domain + peptide inhibitor
6r7t – hMAGEB1 MAGE homology domain + nanobody
5hvq, 5wy5 – hMAGEG1 MAGE homology domain + NSE-1
6xr0 – hMAGEP97 + antibody
- ↑ Kirkin AF, Dzhandzhugazyan K, Zeuthen J. Melanoma-associated antigens recognized by cytotoxic T lymphocytes. APMIS. 1998 Jul;106(7):665-79. PMID:9740504 doi:10.1111/j.1699-0463.1998.tb00210.x
- ↑ Xiao J, Chen HS. Biological functions of melanoma-associated antigens. World J Gastroenterol. 2004 Jul 1;10(13):1849-53. PMID:15222021 doi:10.3748/wjg.v10.i13.1849
- ↑ Hofbauer GF, Burkhart A, Schüler G, Dummer R, Burg G, Nestle FO. High frequency of melanoma-associated antigen or HLA class I loss does not correlate with survival in primary melanoma. J Immunother. 2004 Jan-Feb;27(1):73-8. PMID:14676635 doi:10.1097/00002371-200401000-00007
- ↑ Suzuki T, Yoshida K, Wada Y, Hamai Y, Sentani K, Oue N, Yasui W. Melanoma-associated antigen-A1 expression predicts resistance to docetaxel and paclitaxel in advanced and recurrent gastric cancer. Oncol Rep. 2007 Aug;18(2):329-36 PMID:17611652
- ↑ Takeuchi H, Kuo C, Morton DL, Wang HJ, Hoon DS. Expression of differentiation melanoma-associated antigen genes is associated with favorable disease outcome in advanced-stage melanomas. Cancer Res. 2003 Jan 15;63(2):441-8 PMID:12543800
- ↑ Fleming MC, Chiou LF, Tumbale PP, Droby GN, Lim J, Norris-Drouin JL, Williams JG, Pearce KH, Williams RS, Vaziri C, Bowers AA. Discovery and Structural Basis of the Selectivity of Potent Cyclic Peptide Inhibitors of MAGE-A4. J Med Chem. 2022 May 26;65(10):7231-7245. doi: 10.1021/acs.jmedchem.2c00185. Epub, 2022 May 6. PMID:35522528 doi:https://dx.doi.org/10.1021/acs.jmedchem.2c00185