HIF1α and MBP1 are associated with the progression of breast cancer cells by repressing ßcatenin transcription.
Oncol Rep
; 48(3)2022 Sep.
Article
en En
| MEDLINE
| ID: mdl-35796020
ABSTRACT
Breast cancer (BC) is a common type of tumor. Numerous patients are diagnosed and treated in the early stages of the disease; however, the recurrence rate remains high. Therefore, identifying sensitive and specific tumor markers to prevent and treat BC is essential. cMyc promoter binding protein 1 (MBP1) is a regulatory molecule located in the cell nucleus. It targets and regulates the expression of various cell proliferation, apoptosis and tumorassociated genes. MBP1 expression in BC tissues was detected using immunohistochemistry and further validated in BC and normal human cell lines using RTqPCR and western blot analysis. Low MBP1 expression, in clinical samples of BC, was associated with a poor prognosis of BC (n=50). MBP1 overexpression effectively inhibited the growth and metastasis of xenograft tumors in vivo. Cell counting kit8 assays confirmed that the proliferation of the BC cell lines was significantly increased following knockdown of MBP1 expression, while overexpression of MBP1 could significantly inhibit the proliferation of the BC cell lines. Mechanistically, a dualluciferase assay was used to confirm that MBP1 was the key transcriptional regulator of ßcatenin. In addition, MBP1 transcription and hypoxiainducible factor (HIF1α) induction were associated. By regulating the hypoxic microenvironmental state in the MDA231 and MCF7 cell lines, it was demonstrated that MBP1 served as a hypoxiaresponsive factor and could be a new target for tumor therapy. Taken together, these results suggested that MBP1, as a potential tumor marker associated with prognosis of BC and may serve as a therapeutic target for BC. Moreover, MBP1 plays a critical role in inhibiting the growth and progression of BC cell lines.
Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Fosfopiruvato Hidratasa
/
Neoplasias de la Mama
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Biomarcadores de Tumor
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Proteínas Supresoras de Tumor
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Proteínas de Unión al ADN
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Beta Catenina
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Subunidad alfa del Factor 1 Inducible por Hipoxia
Tipo de estudio:
Prognostic_studies
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Risk_factors_studies
Límite:
Female
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Humans
Idioma:
En
Revista:
Oncol Rep
Asunto de la revista:
NEOPLASIAS
Año:
2022
Tipo del documento:
Article