Please use this identifier to cite or link to this item:
|Title:||CDKN1A histone acetylation and gene expression relationship in gastric adenocarcinomas|
|Authors:||Wisnieski, Fernanda [UNIFESP]|
Calcagno, Danielle Queiroz
Leal, Mariana Ferreira [UNIFESP]
Santos, Leonardo Caires [UNIFESP]
Gigek, Carolina Oliveira [UNIFESP]
Chen, Elizabeth Suchi [UNIFESP]
Artigiani, Ricardo [UNIFESP]
Assumpcao, Paulo Pimentel [UNIFESP]
Lourenco, Laercio Gomes [UNIFESP]
Burbano, Rommel Rodriguez
Smith, Marilia Cardoso [UNIFESP]
Gene expression regulation
|Publisher:||Springer-Verlag Italia Srl|
|Citation:||Clinical And Experimental Medicine. Milan, v. 17, n. 1, p. 121-129, 2017.|
|Abstract:||CDKN1A is a tumor suppressor gene involved in gastric carcinogenesis and is a potential target for histone deacetylase inhibitor-based therapies. Upregulation of CDKN1A is generally observed in several cell lines after histone deacetylase inhibitor treatment|
however, little is known about the histone acetylation status associated with this gene in clinical samples, including gastric tumor tissue samples. Therefore, our goal was to quantify the H3K9 and H4K16 acetylation levels associated with three CDKN1A regions in 21 matched pairs of gastric adenocarcinoma and corresponding adjacent non-tumor samples by chromatin immunoprecipitation and to correlate these data with the gene expression. Our results demonstrated that the -402, -20, and +182 CDKN1A regions showed a significantly increased acetylation level in at least one of the histones evaluated (p < 0.05, for all comparisons), and these levels were positively correlated in gastric tumors. However, an inverse correlation was detected between both H3K9 and H4K16 acetylation at the -402 CDKN1A region and mRNA levels in gastric tumors (r = -0.51, p = 0.02
r = -0.60, p < 0.01, respectively). Furthermore, increased H4K16 acetylation at the -20 CDKN1A region was associated with gastric tumors of patients without lymph node metastasis (p = 0.04). These results highlight the complexity of these processes in gastric adenocarcinoma and contribute to a better understanding of CDKN1A regulation in carcinogenesis.
|Appears in Collections:||Carta|
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.