RESUMEN
Translational control plays a crucial role in the regulation of apoptosis, with the EIF4 family serving as one of the mRNA translation factors that modulate the process of mRNA translation based on mRNA characteristics. To address this potential causal role of EIF4 family proteins and breast cancer, Mendelian randomization was employed. The study incorporated four sets of genetics instrumental variables, namely EIF4E, EIF4B, EIF4A, and EIF4EBP2. The outcome variables selected for analysis were the BCAC consortium, which included estrogen receptor positive (ER+) and estrogen receptor negative (ER-) samples. To assess the potential violations of the MR assumption, the primary MR analysis employed inverse variance weighted (IVW), and several sensitivity analyses were conducted. The findings of the two-sample MR analysis indicate that EIF4E has an adverse effect on breast cancer risk (p = 0.028). However, the evidence for the relationship between EIF4E and ER status of breast cancer suggests a weak association with ER+ breast cancer (p = 0.054), but not with ER- breast cancer (p > 0.05). The study findings indicate that EIF4A is not causally linked to the risk of ER+ breast cancer, but is significantly associated with an elevated risk of ER- breast cancer (p = 0.028). However, the evidence is inadequate to support the effects of EIF4B and EIF4EBP2 on breast cancer (p > 0.05). Our results suggest that EIF4 may be a potential factor in the occurrence and development of breast cancer, which may lead to a better understanding of its causes and prevention.
Asunto(s)
Neoplasias de la Mama , Factor 4E Eucariótico de Iniciación , Femenino , Humanos , Neoplasias de la Mama/genética , Neoplasias de la Mama/metabolismo , Factor 4E Eucariótico de Iniciación/metabolismo , Factor 4E Eucariótico de Iniciación/genética , Factores Eucarióticos de Iniciación/metabolismo , Factores Eucarióticos de Iniciación/genética , Predisposición Genética a la Enfermedad , Análisis de la Aleatorización Mendeliana , Polimorfismo de Nucleótido Simple , Receptores de Estrógenos/metabolismo , Receptores de Estrógenos/genéticaRESUMEN
OBJECTIVE: To investigate the differential expression of miR-21, miR-126, miR-143 and miR-373 in normal cervical tissue, cervical cancer tissue and Hela cell. METHODS: The expressions of miR-21, miR-126, miR-143 and miR-373 were detected by real-time PCR in cervical cancer tissue, cervical tissue of benign uterine tumor and Hela cell. RESULTS: High expression of miR-21 was observed in cervical cancer and Hela cell, while low expression was observed in normal cervical tissue. The relative quantification of miR-21 in cerveical cancer was 11.3196 times that of miR-21 in normal cervical tissue (P < 0.05). The expression levels of miR-143 and miR-373 in cervical cancer and Hela cell were lower than those of normal cervical tissue. The relative quantification of miR-143 in cerveical cancer was 0.1553 times that of normal cervical tissue (P < 0.05), and the relative quantification of miR-373 in cerveical cancer was 0.4907 times that of normal cervical tissue (P < 0.05). The expression of miR-126 had no significant difference among cervical cancer tissue, Hela cell and normal cervical tissue (P > 0.05). CONCLUSION: miRNAs are closely related to the occurrence and regulation of cervical cancer. The high expression of miR-21 in cervical cancer and Hela cell indicate that it may play a possible role of oncogenes, while miR-143 and miR-373 with low expression may play the role of tumor suppressor genes.