KMID : 0357920120460020142
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Korean Journal of Pathology 2012 Volume.46 No. 2 p.142 ~ p.150
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Expression of HAT1 and HDAC1, 2, 3 in Diffuse Large B-Cell Lymphomas, Peripheral T-Cell Lymphomas, and NK/T-Cell Lymphomas
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Min Soo-Kee
Koh Young-Ho Park Yun-Woong Kim Hyo-Jung Seo Jin-Won Park Hye-Rim Cho Seong-Jin Kim In-Sun
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Abstract
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Background : It has generally been proven that histone acetylation and deacetylation are involved in the malignant transformation. To date, however, this has rarely been studied in cases of malignant lymphoma.
Methods : We studied nine cases of reactive lymphoid hyperplasia, 78 cases of diffuse large B-cell lymphoma (DLBCL), 13 cases of peripheral T-cell lymphoma, not otherwise specified (PTCL-NOS), and 13 cases of extranodal NK/T-cell lymphoma, nasal type (NKTCL). Thus, we attempted to elucidate the associations of the degree of the expression of histone acetyltransferase 1 (HAT1), histone deacetylase (HDAC) 1, HDAC2, and HDAC3 with the clinical behaviors of above malignant lymphomas using the immunohistochemistry and a western blot analysis.
Results : The degree of the expression of HAT1 was higher in cases of DLBCL, PTCL-NOS or NKTCL as compared with reactive lymphoid hyperplasia (p<0.05). The degree of the expression of HAT1 was correlated with that of HDAC1 in cases of DLBCL or NKTCL (p<0.05). The degree of the expression of HAT1 and HDAC1 was correlated with a poor survival in cases of DLBCL or PTCL-NOS (p>0.05).
Conclusions : HAT1, HDAC1, and HDAC2 play a critical role in the development of malignant lymphomas. Both HAT1 and HDAC1 might be indicators for a poor prognosis in cases of DLBCL as cooperating factors.
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KEYWORD
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Acetylation, Deacetylation, Histone deacetylase inhibitors, Lymphoma
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