SATB1, the global chromatin organizer and transcription factor, has emerged as a key factor integrating higher-order chromatin architecture with gene regulation.[2] Recent studies have unraveled the role of SATB1 in organization of chromatin 'loopscape' and its dynamic nature in response to physiological stimuli.[3] At genome-wide level, SATB1 seems to play a role in organization of the transcriptionally poised chromatin. SATB1 organizes the MHC class-I locus into distinct chromatin loops by tethering MARs to nuclear matrix at fixed distances. Silencing of SATB1 mimics the effects of IFN-γ treatment on chromatin loop architecture of the MHC class I locus and altered expression of genes within the locus. SATB1 has also been shown to induce breast cancer tumor growth and metastasis through the altered expression of large numbers of genes.
↑Pavan Kumar P, Purbey PK, Sinha CK, Notani D, Limaye A, Jayani RS, Galande S (Apr 2006). "Phosphorylation of SATB1, a global gene regulator, acts as a molecular switch regulating its transcriptional activity in vivo". Molecular Cell. 22 (2): 231–43. doi:10.1016/j.molcel.2006.03.010. PMID16630892.
↑Galande S, Purbey PK, Notani D, Kumar PP (Oct 2007). "The third dimension of gene regulation: organization of dynamic chromatin loopscape by SATB1". Current Opinion in Genetics & Development. 17 (5): 408–14. doi:10.1016/j.gde.2007.08.003. PMID17913490.
↑ 4.04.14.24.34.4Yasui D, Miyano M, Cai S, Varga-Weisz P, Kohwi-Shigematsu T (Oct 2002). "SATB1 targets chromatin remodelling to regulate genes over long distances". Nature. 419 (6907): 641–5. doi:10.1038/nature01084. PMID12374985.
↑Durrin LK, Krontiris TG (Jun 2002). "The thymocyte-specific MAR binding protein, SATB1, interacts in vitro with a novel variant of DNA-directed RNA polymerase II, subunit 11". Genomics. 79 (6): 809–17. doi:10.1006/geno.2002.6772. PMID12036295.
Further reading
Dickinson LA, Joh T, Kohwi Y, Kohwi-Shigematsu T (Aug 1992). "A tissue-specific MAR/SAR DNA-binding protein with unusual binding site recognition". Cell. 70 (4): 631–45. doi:10.1016/0092-8674(92)90432-C. PMID1505028.
Robertson NG, Khetarpal U, Gutiérrez-Espeleta GA, Bieber FR, Morton CC (Sep 1994). "Isolation of novel and known genes from a human fetal cochlear cDNA library using subtractive hybridization and differential screening". Genomics. 23 (1): 42–50. doi:10.1006/geno.1994.1457. PMID7829101.
Xu L, Deng HX, Xia JH, Yang Y, Fan CH, Hung WY, Siddque T (1997). "Assignment of SATB1 to human chromosome band 3p23 by in situ hybridization". Cytogenetics and Cell Genetics. 77 (3–4): 205–6. doi:10.1159/000134577. PMID9284917.
Reddy PH, Stockburger E, Gillevet P, Tagle DA (Dec 1997). "Mapping and characterization of novel (CAG)n repeat cDNAs from adult human brain derived by the oligo capture method". Genomics. 46 (2): 174–82. doi:10.1006/geno.1997.5044. PMID9417904.
Escalier D, Allenet B, Badrichani A, Garchon HJ (Jan 1999). "High level expression of the Xlr nuclear protein in immature thymocytes and colocalization with the matrix-associated region-binding SATB1 protein". Journal of Immunology. 162 (1): 292–8. PMID9886398.
Kieffer LJ, Greally JM, Landres I, Nag S, Nakajima Y, Kohwi-Shigematsu T, Kavathas PB (Apr 2002). "Identification of a candidate regulatory region in the human CD8 gene complex by colocalization of DNase I hypersensitive sites and matrix attachment regions which bind SATB1 and GATA-3". Journal of Immunology. 168 (8): 3915–22. doi:10.4049/jimmunol.168.8.3915. PMID11937547.
Durrin LK, Krontiris TG (Jun 2002). "The thymocyte-specific MAR binding protein, SATB1, interacts in vitro with a novel variant of DNA-directed RNA polymerase II, subunit 11". Genomics. 79 (6): 809–17. doi:10.1006/geno.2002.6772. PMID12036295.
Yasui D, Miyano M, Cai S, Varga-Weisz P, Kohwi-Shigematsu T (Oct 2002). "SATB1 targets chromatin remodelling to regulate genes over long distances". Nature. 419 (6907): 641–5. doi:10.1038/nature01084. PMID12374985.
Cai S, Han HJ, Kohwi-Shigematsu T (May 2003). "Tissue-specific nuclear architecture and gene expression regulated by SATB1". Nature Genetics. 34 (1): 42–51. doi:10.1038/ng1146. PMID12692553.
Fujii Y, Kumatori A, Nakamura M (2004). "SATB1 makes a complex with p300 and represses gp91(phox) promoter activity". Microbiology and Immunology. 47 (10): 803–11. doi:10.1111/j.1348-0421.2003.tb03438.x. PMID14605447.
Gocke CB, Yu H, Kang J (Feb 2005). "Systematic identification and analysis of mammalian small ubiquitin-like modifier substrates". The Journal of Biological Chemistry. 280 (6): 5004–12. doi:10.1074/jbc.M411718200. PMID15561718.
Wen J, Huang S, Rogers H, Dickinson LA, Kohwi-Shigematsu T, Noguchi CT (Apr 2005). "SATB1 family protein expressed during early erythroid differentiation modifies globin gene expression". Blood. 105 (8): 3330–9. doi:10.1182/blood-2004-08-2988. PMID15618465.
Seo J, Lozano MM, Dudley JP (Jul 2005). "Nuclear matrix binding regulates SATB1-mediated transcriptional repression". The Journal of Biological Chemistry. 280 (26): 24600–9. doi:10.1074/jbc.M414076200. PMID15851481.
Nakayama Y, Mian IS, Kohwi-Shigematsu T, Ogawa T (Aug 2005). "A nuclear targeting determinant for SATB1, a genome organizer in the T cell lineage". Cell Cycle. 4 (8): 1099–106. doi:10.4161/cc.4.8.1862. PMID15970696.
Rual JF, Venkatesan K, Hao T, Hirozane-Kishikawa T, Dricot A, Li N, Berriz GF, Gibbons FD, Dreze M, Ayivi-Guedehoussou N, Klitgord N, Simon C, Boxem M, Milstein S, Rosenberg J, Goldberg DS, Zhang LV, Wong SL, Franklin G, Li S, Albala JS, Lim J, Fraughton C, Llamosas E, Cevik S, Bex C, Lamesch P, Sikorski RS, Vandenhaute J, Zoghbi HY, Smolyar A, Bosak S, Sequerra R, Doucette-Stamm L, Cusick ME, Hill DE, Roth FP, Vidal M (Oct 2005). "Towards a proteome-scale map of the human protein-protein interaction network". Nature. 437 (7062): 1173–8. doi:10.1038/nature04209. PMID16189514.