First Author | Sørensen AB | Year | 2002 |
Journal | Gene | Volume | 285 |
Issue | 1-2 | Pages | 79-89 |
PubMed ID | 12039034 | Mgi Jnum | J:75989 |
Mgi Id | MGI:2178184 | Doi | 10.1016/s0378-1119(02)00406-7 |
Citation | Sorensen AB, et al. (2002) Alternative splicing, expression, and gene structure of the septin-like putative proto-oncogene Sint1. Gene 285(1-2):79-89 |
abstractText | Sint1 (sept9), a murine gene of the septin family, was previously isolated as a putative proto-oncogene involved in T-cell lymphomagenesis. We now present its genomic structure and report on nine exons shared by all identified variants and at least four alternatively spliced 5' exons. Northern blot analyses using a Sint1 cDNA probe showed in almost all examined tissues two predominant transcripts of 3 and 4 kb. Exon-specific expression analyses assigned one of the 5' exons to the 4 kb transcript, while the other 5' exons seem to represent novel, tissue-specific, weakly expressed transcripts of different sizes, and none of them appear to hybridize to the major 3 kb transcript. Whole-mount in situ hybridization on post-implantation embryos revealed several areas strongly expressing Sint1, including neural crest cells, cephalic mesenchyme, and mesenchymal cells in the developing limb. A clustering of proviruses in four independent retrovirally induced tumors point to a region of about 3 kb around the most upstream exon as important for proviral deregulation of Sint1. |