V-erb-b2 erythroblastic leukemia viral oncogene homolog 2, neuro/glioblastoma derived oncogene homolog (avian) |
PDB rendering based on 1n8z. |
有效結構 |
PDB |
直系同源檢索:PDBe, RCSB |
PDB查詢代碼列表 |
1MFG, 1MFL, 1MW4, 1N8Z, 1QR1, 1S78, 2A91, 2JWA, 2KS1, 2L4K, 3BE1, 3H3B, 3MZW, 3N85, 3PP0, 3RCD
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標識 |
代號 |
ERBB2; CD340; HER-2; HER-2/neu; HER2; MLN 19; NEU; NGL; TKR1 |
擴展標識 |
遺傳學:164870 鼠基因:95410 同源基因:3273 ChEMBL: 1824 GeneCards: ERBB2 Gene |
EC編號 |
2.7.10.1 |
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RNA表達模式 |
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更多表達數據 |
直系同源體 |
物種 |
人類 |
鼠類 |
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Entrez |
2064 |
13866 |
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Ensembl |
ENSG00000141736 |
ENSMUSG00000062312 |
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UniProt |
P04626 |
P70424 |
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mRNA序列 |
NM_001005862 |
NM_001003817 |
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蛋白序列 |
NP_001005862 |
NP_001003817 |
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基因位置 |
Chr 17:
37.84 – 37.89 Mb |
Chr 11:
98.41 – 98.44 Mb |
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PubMed查詢 |
[1] |
[2] |
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人類表皮生長因子受體2(英語:human epidermal growth factor receptor 2,縮寫為HER2,亦稱為Neu、ErbB-2、CD340(分化群340)或p185)是一種由ERBB2基因編碼的蛋白質。HER2是表皮生長因子受體(EGFR/ErbB)家族中的成員之一。
功能
HER2是結合在細胞膜表面的受體酪氨酸激酶,參與導致細胞生長和分化的信號傳導途徑,由原癌基因HER2/neu編碼。一般認為HER2是一個孤受體,表皮生長因子家族的配體都不能激活它。但配體結合ErbB受體時可形成二聚體,且HER2可與ErbB家族的其他成員結合成異二聚體。[1]HER2基因是原癌基因,位於人類第17號染色體長臂(17q21-q22)。[2]
HER-2基因是影響乳癌預後的一個重要因素,大約有25%-30%左右的乳癌患者,受到體內癌細胞HER-2基因過量表現的影響,他們的癌細胞不僅繁殖能力強,對部份化學治療藥物也容易有抗藥性,造成病患即使接受手術治療,癌細胞仍然有較高複發及轉移的機率,無法長期存活。
乳癌病患可分為Her-2/neu陽性或Her-2/neu陰性兩種截然不同的預後之乳癌。乳癌患者的腫瘤,若HER-2蛋白質出現過量表現,這類的腫瘤生長速度較快且生物行為較為惡性,使得手術後複發率高於其他類型的乳癌。[3]
針對HER2的葯物
羅氏藥廠開發的賀癌平(Herceptin)即是以HER2為標靶的葯物,對晚期轉移性的乳腺癌頗具效用。
相互作用
參考文獻
- ↑ Olayioye MA. Update on HER-2 as a target for cancer therapy: intracellular signaling pathways of ErbB2/HER-2 and family members. Breast Cancer Res. 2001, 3 (6): 385–389. doi:10.1186/bcr327. PMID 11737890.
- ↑ Coussens L. Tyrosine Kinase Receptor with Extensive Homology to EGF Receptor Shares Chromosomal Location with neu Oncogene. Science. 1985, 230: 1132–1139. doi:10.1126/science.2999974.
- ↑ HER-2陽性早期乳癌治療的近況. 台灣癌症防治網. 2009年10月16日 [2009-10-06].
深入閱讀
- Ross JS, Fletcher JA, Linette GP, et al.. The Her-2/neu gene and protein in breast cancer 2003: biomarker and target of therapy. Oncologist. 2003, 8 (4): 307–25. doi:10.1634/theoncologist.8-4-307. PMID 12897328.
- Zhou BP, Hung MC. Dysregulation of cellular signaling by HER2/neu in breast cancer. Semin. Oncol.. 2003, 30 (5 Suppl 16): 38–48. doi:10.1053/j.seminoncol.2003.08.006. PMID 14613025.
- Ménard S, Casalini P, Campiglio M, et al.. Role of HER2/neu in tumor progression and therapy. Cell. Mol. Life Sci.. 2005, 61 (23): 2965–78. doi:10.1007/s00018-004-4277-7. PMID 15583858.
- Becker JC, Muller-Tidow C, Serve H, et al.. Role of receptor tyrosine kinases in gastric cancer: new targets for a selective therapy. World J. Gastroenterol.. 2006, 12 (21): 3297–305. PMID 16733844.
- Laudadio J, Quigley DI, Tubbs R, Wolff DJ. HER2 testing: a review of detection methodologies and their clinical performance. Expert Rev. Mol. Diagn.. 2007, 7 (1): 53–64. doi:10.1586/14737159.7.1.53. PMID 17187484.
- Bianchi F, Tagliabue E, Ménard S, Campiglio M. Fhit expression protects against HER2-driven breast tumor development: unraveling the molecular interconnections. Cell Cycle. 2007, 6 (6): 643–6. doi:10.4161/cc.6.6.4033. PMID 17374991.
- Del Bimbo A., Meoni M., Pala P.. Accurate evaluation of HER-2 amplification in FISH images. Imaging Systems and Techniques (IST), 2010 IEEE International Conference on. 2010: 407–10. doi:10.1109/IST.2010.5548461. ISBN 978-1-4244-6492-0.
外部連結
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1n8z: Crystal structure of extracellular domain of human HER2 complexed with Herceptin Fab
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1s78: Insights into ErbB signaling from the structure of the ErbB2-pertuzumab complex
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2a91: Crystal structure of ErbB2 domains 1-3
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參考來源
更多醫學百科條目