P63
p63,亦作TP63,全稱腫瘤蛋白p63(tumor protein p63)或惡性轉化相關蛋白63(transformation-related protein 63),在人體內由TP63基因編碼[6][7][8][9]。p63的發現是在p53基因發現後20年。p63與p53、p73同屬一個蛋白家族,三者結構與功能都較爲相似[10]。儘管p63的發現晚於p53,但進化生物學的證據表明p63是p53蛋白家族的起源,p53、p73都是由p63蛋白演化而成[11]。
功能
編輯p63是p53蛋白家族下的一種轉錄因子。p63-/-基因型的小鼠會出現無牙、乳腺等發育依賴間充質-上皮相互作用的器官組織及無附肢等多種發育缺陷。p63蛋白的轉錄變體主要有兩種,TAp63和ΔNp63。已證明ΔNp63擁有多種功能,包括參與皮膚發育和成體幹細胞/祖細胞的功能調控[12]。相比之下,傳統的觀點認爲TAp63的功能幾乎只侷限於參與凋亡過程。不過,近期的研究還表明TAp63參與了卵母細胞完整性的維持[13]。另一些研究還表明TAp63參與了心臟發育[14]和早衰過程[15]。
臨床意義
編輯p63蛋白的突變可能會導致兔脣、齶裂等發育畸形[16]。p63蛋白的突變可導致以等裂兔脣爲典型特徵的EEC綜合徵(ectrodactyly-ectodermal dysplasia-cleft syndrom)[16]。此外,p63蛋白的突變也可能導致3型兔脣齶裂綜合徵(EEC3)、先天性缺指(ectrodactyly,亦稱爲裂手-腳畸形4),以及以等裂兔脣爲典型特徵的AEC綜合徵[16]。此外,ADULT綜合徵(Acro–dermato–ungual–lacrimal–tooth syndrome)、附肢-乳腺綜合徵(limb-mammary syndrome)、RHS綜合徵(Rap-Hodgkin syndrome)以及也與p63蛋白功能的異常有關。目前認爲兔脣、齶裂是同時出現還是任出現一種取決於p63的不同突變[16]近期,研究人員提出使用iPS細胞分化替代缺陷型上皮細胞治療EEC綜合徵的方法[17]。
診斷
編輯p63的免疫組化法可以用於診斷扁平細胞癌和前列腺腺癌(最常見的一種前列腺癌)[18]。正常的前列腺腺體含有基底細胞,因而組織高表達p63,免疫染色深,而惡性轉化後的腺癌組織因缺少基底細胞,p63免疫染色呈現陰性結果[19]。p63亦可用於鑑別腺癌、小細胞癌中常見的分化程度低的癌變扁平細胞[20]。
相互作用
編輯調節
編輯參見
編輯- AMACR,另一種前列腺癌的腫瘤標誌物
參考文獻
編輯- ^ 與P63相關的疾病;在維基數據上查看/編輯參考.
- ^ 2.0 2.1 2.2 GRCh38: Ensembl release 89: ENSG00000073282 - Ensembl, May 2017
- ^ 3.0 3.1 3.2 GRCm38: Ensembl release 89: ENSMUSG00000022510 - Ensembl, May 2017
- ^ Human PubMed Reference:. National Center for Biotechnology Information, U.S. National Library of Medicine.
- ^ Mouse PubMed Reference:. National Center for Biotechnology Information, U.S. National Library of Medicine.
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- ^ Tan M, Bian J, Guan K, Sun Y. p53CP is p51/p63, the third member of the p53 gene family: partial purification and characterization. Carcinogenesis. Feb 2001, 22 (2): 295–300. PMID 11181451. doi:10.1093/carcin/22.2.295.
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- ^ Skipper M. Dedicated protection for the female germline. Nature Reviews Molecular Cell Biology. January 2007, 8 (1): 4–5. doi:10.1038/nrm2091.
- ^ Crum CP, McKeon FD. p63 in epithelial survival, germ cell surveillance, and neoplasia. Annual Review of Pathology. 2010, 5: 349–71. PMID 20078223. doi:10.1146/annurev-pathol-121808-102117.
- ^ Deutsch GB, Zielonka EM, Coutandin D, Weber TA, Schäfer B, Hannewald J, Luh LM, Durst FG, Ibrahim M, Hoffmann J, Niesen FH, Sentürk A, Kunkel H, Brutschy B, Schleiff E, Knapp S, Acker-Palmer A, Grez M, McKeon F, Dötsch V. DNA damage in oocytes induces a switch of the quality control factor TAp63α from dimer to tetramer. Cell. Feb 2011, 144 (4): 566–76. PMC 3087504 . PMID 21335238. doi:10.1016/j.cell.2011.01.013.
- ^ Rouleau M, Medawar A, Hamon L, Shivtiel S, Wolchinsky Z, Zhou H, De Rosa L, Candi E, de la Forest Divonne S, Mikkola ML, van Bokhoven H, Missero C, Melino G, Pucéat M, Aberdam D. TAp63 is important for cardiac differentiation of embryonic stem cells and heart development. Stem Cells. Nov 2011, 29 (11): 1672–83 [2017-11-13]. PMID 21898690. doi:10.1002/stem.723. (原始內容存檔於2014-08-08).
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- ^ Shiran MS, Tan GC, Sabariah AR, Rampal L, Phang KS. p63 as a complimentary basal cell specific marker to high molecular weight-cytokeratin in distinguishing prostatic carcinoma from benign prostatic lesions. The Medical Journal of Malaysia. Mar 2007, 62 (1): 36–9. PMID 17682568.
- ^ Herawi M, Epstein JI. Immunohistochemical antibody cocktail staining (p63/HMWCK/AMACR) of ductal adenocarcinoma and Gleason pattern 4 cribriform and noncribriform acinar adenocarcinomas of the prostate. The American Journal of Surgical Pathology. Jun 2007, 31 (6): 889–94. PMID 17527076. doi:10.1097/01.pas.0000213447.16526.7f.
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拓展閱讀
編輯- Little NA, Jochemsen AG. p63. The International Journal of Biochemistry & Cell Biology. Jan 2002, 34 (1): 6–9. PMID 11733180. doi:10.1016/S1357-2725(01)00086-3.
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