SNAI2
Protein SNAI2 cinkovog prsta je transkripcijski faktor koji je kod ljudi kodiran genom SNAI2. Podstiče diferencijaciju i migraciju određenih ćelija i ima ulogu u pokretanju gastrulacije.[5][6][7]
Aminokiselinska sekvenca
urediDužina polipeptidnog lanca je 268 aminokiselina, а molekulska težina 29.986 Da.[8]
10 | 20 | 30 | 40 | 50 | ||||
---|---|---|---|---|---|---|---|---|
MPRSFLVKKH | FNASKKPNYS | ELDTHTVIIS | PYLYESYSMP | VIPQPEILSS | ||||
GAYSPITVWT | TAAPFHAQLP | NGLSPLSGYS | SSLGRVSPPP | PSDTSSKDHS | ||||
GSESPISDEE | ERLQSKLSDP | HAIEAEKFQC | NLCNKTYSTF | SGLAKHKQLH | ||||
CDAQSRKSFS | CKYCDKEYVS | LGALKMHIRT | HTLPCVCKIC | GKAFSRPWLL | ||||
QGHIRTHTGE | KPFSCPHCNR | AFADRSNLRA | HLQTHSDVKK | YQCKNCSKTF | ||||
SRMSLLHKHE | ESGCCVAH |
Funkcija
urediOvaj gen kodira člana nadporodice puževa tipa tranckripcijskog faktora cinkovih prstiju. Kodirani protein djeluje kao represortranskripcije koji se veže za motive E-kutija i također vjerojatno potiskuje E-kadherinsku transkripciju u karcinomu dojke. Ovaj protein je uključen u epitelno-mezenhimske tranzicije i ima antiapoptotsku aktivnost. Regulira diferencijaciju i migraciju čelija nervnog grebena, zajedno s produktima drugih gena (npr. FOXD3, SOX9 i SOX10, BMP) u embrionskom stadiju. Mutacije u ovom genu mogu biti povezane sa sporadičnim slučajevima defekata nervne cijevi.[7][9]
SNAI2 snižava ekspresiju E-kadherina u ćelijama prehladanog nervnog grebena; stoga, SNAI2 inducira čvrsto vezane epitelne ćelijee da se razbiju u labavi mezenhimski fenotip, dopuštajući gastrulaciju mezoderma u embriju u razvoju.[10][11] Strukturno je sličan antiapoptotskom Ces-1 u C. elegans. SLUG je negativni regulator produktivne ćelijske smrti embrijona u razvoju i odraslih.[10][12]
Klinički značaj
urediŠiroko eksprimiran u ljudskim tkivima, SLUG je najviše prisutan u leukocitima periferne krvi, jetri odraslih i u tkivima mozga fetusa i odraslih.[12] SLUG plays a role in breast carcinoma as well as leukemia by downregulation of E-cadherin, which supports mesenchymal phenotype by shifting expression from a Type I to Type II cadherin profile.[12][13] Održavanje mezenhimskog fenotipa omogućava metastaziranje tumorskih ćelija, iako se SLUG eksprimira u karcinomima bez obzira na invazivnost.[10][11][12] Model nokauta koji koristi kokošije embrione također je pokazao inhibiciju dezaminacije mezodermnog i nervnog grebena; izgleda da dobitak funkcije puža povećava proizvodnju nervnog grebena.[10] Mutacije u pužu, kod nekih životinja povezane su s gubitkom trudnoća tokom gastrulacije.[10]
Interakcije
urediBMP prethode ekspresiji SLUG -a i sumnja se da su neposredni uzvodni induktori ekspresije gena.[11][14]
Reference
uredi- ^ a b c GRCh38: Ensembl release 89: ENSG00000019549 - Ensembl, maj 2017
- ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000022676 - Ensembl, maj 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.
- ^ Rhim H, Savagner P, Thibaudeau G, Thiery JP, Pavan WJ (Jan 1998). "Localization of a neural crest transcription factor, Slug, to mouse chromosome 16 and human chromosome 8". Mammalian Genome. 8 (11): 872–3. doi:10.1007/s003359900601. PMID 9337409. S2CID 2177885.
- ^ Cohen ME, Yin M, Paznekas WA, Schertzer M, Wood S, Jabs EW (august 1998). "Human SLUG gene organization, expression, and chromosome map location on 8q". Genomics. 51 (3): 468–71. doi:10.1006/geno.1998.5367. PMID 9721220.
- ^ a b "Entrez Gene: SNAI2 snail homolog 2 (Drosophila)".
- ^ "UniProt, O43623" (jezik: engleski). Pristupljeno 21. 9. 2021.
- ^ Stegmann, K.; Boecker, J.; Kosan, C.; Ermert, A.; Kunz, J.; Koch, M. C. (august 1999). "Human transcription factor SLUG: mutation analysis in patients with neural tube defects and identification of a missense mutation (D119E) in the Slug subfamily-defining region". Mutation Research. 406 (2–4): 63–69. doi:10.1016/s1383-5726(99)00002-3. ISSN 0027-5107. PMID 10479723.
- ^ a b c d e Nieto MA (mart 2002). "The snail superfamily of zinc-finger transcription factors". Nature Reviews Molecular Cell Biology. 3 (3): 155–66. doi:10.1038/nrm757. PMID 11994736. S2CID 8330951.
- ^ a b c Carlson BM (2013). Human Embryology and Developmental Biology (5th izd.). Philadelphia, PA: Elsevier Health Sciences. str. 101–102, 106, 313, 362, 382. ISBN 978-1-4557-2794-0.
- ^ a b c d Inukai T, Inoue A, Kurosawa H, Goi K, Shinjyo T, Ozawa K, Mao M, Inaba T, Look AT (septembar 1999). "SLUG, a ces-1-related zinc finger transcription factor gene with antiapoptotic activity, is a downstream target of the E2A-HLF oncoprotein". Molecular Cell (jezik: engleski). 4 (3): 343–52. doi:10.1016/S1097-2765(00)80336-6. PMID 10518215.
- ^ Kalluri R, Weinberg RA (juni 2009). "The basics of epithelial-mesenchymal transition". The Journal of Clinical Investigation (jezik: engleski). 119 (6): 1420–8. doi:10.1172/jci39104. PMC 2689101. PMID 19487818.
- ^ Sakai D, Wakamatsu Y (2005). "Regulatory mechanisms for neural crest formation". Cells Tissues Organs. 179 (1–2): 24–35. doi:10.1159/000084506. PMID 15942190. S2CID 1886380.
Dopunska literatura
uredi- Maruyama K, Sugano S (januar 1994). "Oligo-capping: a simple method to replace the cap structure of eukaryotic mRNAs with oligoribonucleotides". Gene. 138 (1–2): 171–4. doi:10.1016/0378-1119(94)90802-8. PMID 8125298.
- Savagner P, Yamada KM, Thiery JP (juni 1997). "The zinc-finger protein slug causes desmosome dissociation, an initial and necessary step for growth factor-induced epithelial-mesenchymal transition". The Journal of Cell Biology. 137 (6): 1403–19. doi:10.1083/jcb.137.6.1403. PMC 2132541. PMID 9182671.
- Suzuki Y, Yoshitomo-Nakagawa K, Maruyama K, Suyama A, Sugano S (oktobar 1997). "Construction and characterization of a full length-enriched and a 5'-end-enriched cDNA library". Gene. 200 (1–2): 149–56. doi:10.1016/S0378-1119(97)00411-3. PMID 9373149.
- Stegmann K, Boecker J, Kosan C, Ermert A, Kunz J, Koch MC (august 1999). "Human transcription factor SLUG: mutation analysis in patients with neural tube defects and identification of a missense mutation (D119E) in the Slug subfamily-defining region". Mutation Research. 406 (2–4): 63–9. doi:10.1016/S1383-5726(99)00002-3. PMID 10479723.
- Inukai T, Inoue A, Kurosawa H, Goi K, Shinjyo T, Ozawa K, Mao M, Inaba T, Look AT (septembar 1999). "SLUG, a ces-1-related zinc finger transcription factor gene with antiapoptotic activity, is a downstream target of the E2A-HLF oncoprotein". Molecular Cell. 4 (3): 343–52. doi:10.1016/S1097-2765(00)80336-6. PMID 10518215.
- Hemavathy K, Guru SC, Harris J, Chen JD, Ip YT (juli 2000). "Human Slug is a repressor that localizes to sites of active transcription". Molecular and Cellular Biology. 20 (14): 5087–95. doi:10.1128/MCB.20.14.5087-5095.2000. PMC 85958. PMID 10866665.
- Hajra KM, Chen DY, Fearon ER (mart 2002). "The SLUG zinc-finger protein represses E-cadherin in breast cancer". Cancer Research. 62 (6): 1613–8. PMID 11912130.
- Sánchez-Martín M, Rodríguez-García A, Pérez-Losada J, Sagrera A, Read AP, Sánchez-García I (decembar 2002). "SLUG (SNAI2) deletions in patients with Waardenburg disease". Human Molecular Genetics. 11 (25): 3231–6. doi:10.1093/hmg/11.25.3231. PMID 12444107.
- Kajita M, McClinic KN, Wade PA (septembar 2004). "Aberrant expression of the transcription factors snail and slug alters the response to genotoxic stress". Molecular and Cellular Biology. 24 (17): 7559–66. doi:10.1128/MCB.24.17.7559-7566.2004. PMC 506998. PMID 15314165.
- Catalano A, Rodilossi S, Rippo MR, Caprari P, Procopio A (novembar 2004). "Induction of stem cell factor/c-Kit/slug signal transduction in multidrug-resistant malignant mesothelioma cells". The Journal of Biological Chemistry. 279 (45): 46706–14. doi:10.1074/jbc.M406696200. PMID 15337769.
- Uchikado Y, Natsugoe S, Okumura H, Setoyama T, Matsumoto M, Ishigami S, Aikou T (februar 2005). "Slug Expression in the E-cadherin preserved tumors is related to prognosis in patients with esophageal squamous cell carcinoma". Clinical Cancer Research. 11 (3): 1174–80. PMID 15709186.
- Tripathi MK, Misra S, Khedkar SV, Hamilton N, Irvin-Wilson C, Sharan C, Sealy L, Chaudhuri G (april 2005). "Regulation of BRCA2 gene expression by the SLUG repressor protein in human breast cells". The Journal of Biological Chemistry. 280 (17): 17163–71. doi:10.1074/jbc.M501375200. PMC 3092429. PMID 15734731.
- Tripathi MK, Misra S, Chaudhuri G (april 2005). "Negative regulation of the expressions of cytokeratins 8 and 19 by SLUG repressor protein in human breast cells". Biochemical and Biophysical Research Communications. 329 (2): 508–15. doi:10.1016/j.bbrc.2005.02.006. PMC 3086003. PMID 15737616.
- Moody SE, Perez D, Pan TC, Sarkisian CJ, Portocarrero CP, Sterner CJ, Notorfrancesco KL, Cardiff RD, Chodosh LA (septembar 2005). "The transcriptional repressor Snail promotes mammary tumor recurrence". Cancer Cell. 8 (3): 197–209. doi:10.1016/j.ccr.2005.07.009. PMID 16169465.
- Chen M, Chen LM, Chai KX (juni 2006). "Androgen regulation of prostasin gene expression is mediated by sterol-regulatory element-binding proteins and SLUG". The Prostate. 66 (9): 911–20. doi:10.1002/pros.20325. PMID 16541421. S2CID 23036264.
- Turner FE, Broad S, Khanim FL, Jeanes A, Talma S, Hughes S, Tselepis C, Hotchin NA (juli 2006). "Slug regulates integrin expression and cell proliferation in human epidermal keratinocytes". The Journal of Biological Chemistry. 281 (30): 21321–31. doi:10.1074/jbc.M509731200. PMID 16707493.