Modificaciones epigenéticas de la cromatina en la generación de cáncer / Chromatin epigenetic modifications in cancer generation
Gac. méd. Méx
;
138(6): 547-555, Nov.-Dec. 2002.
Artigo
em Espanhol
| LILACS
| ID: lil-334527
RESUMO
Chromatin is more than a simple staining structure inside the nucleus. It represents a level of organization that regulates transcriptional activation in eukaryotic genes; this may be through epigenetic modifications such as DNA methylation, histone acetylation, deacetylation and methylation, and chromatin remodeling complexes. Chromatin can have a direct impact on regulating gene expression. Several human diseases arise from alterations of epigenetic regulation, causing change in chromatin structure cancer is not the exception. The expression of tumor suppressor genes can be epigenetically silenced by DNA methylation of their promotor regions. In other cases such as leukemias, imbalance of histone acetylation and deacetylation can be a determinant event to induce a leukemic phenotype. Finally, improper imprinting can also be associated with neoplastic transformation as in Wilms tumors and sporadic colon cancer. All this evidence supports our particular attention to the study of chromatin structure in cancer. The use of compounds that modify chromatin to improve effects of radio- and chemotherapy will open new horizons in what we call Chromatin Therapy in cancer.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Cromatina
/
Regulação Neoplásica da Expressão Gênica
/
Transformação Celular Neoplásica
/
Neoplasias
Limite:
Animais
/
Humanos
Idioma:
Espanhol
Revista:
Gac. méd. Méx
Assunto da revista:
Medicina
Ano de publicação:
2002
Tipo de documento:
Artigo
País de afiliação:
México
Instituição/País de afiliação:
Hospital Infantil de México Federico Gómez-SS/MX
Similares
MEDLINE
...
LILACS
LIS