FOXF1 is required for the oncogenic properties of PAX3-FOXO1 in rhabdomyosarcoma.
FOXF1 is required for the oncogenic properties of PAX3-FOXO1 in rhabdomyosarcoma.
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FOXF 1是横纹肌肉瘤中PAX 3-FOXO 1的致癌特性所必需的。
DOI:
10.1038/s41388-021-01694-9
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发表时间:
2021-03
期刊:
影响因子:
8
通讯作者:
Kalin TV
中科院分区:
文献类型:
--
作者:
Milewski D;Shukla S;Gryder BE;Pradhan A;Donovan J;Sudha P;Vallabh S;Pyros A;Xu Y;Barski A;Szabo S;Turpin B;Pressey JG;Millay DP;Khan J;Kalinichenko VV;Kalin TV
The PAX3-FOXO1 fusion protein is the key oncogenic driver in fusion positive rhabdomyosarcoma (FP-RMS), an aggressive soft tissue malignancy with a particularly poor prognosis. Identifying key downstream targets of PAX3-FOXO1 will provide new therapeutic opportunities for treatment of FP-RMS. Herein, we demonstrate that Forkhead Box F1 (FOXF1) transcription factor is uniquely expressed in FP-RMS and is required for FP-RMS tumorigenesis. The PAX3-FOXO1 directly binds to FOXF1 enhancers and induces FOXF1 gene expression. CRISPR/Cas9 mediated inactivation of either FOXF1 coding sequence or FOXF1 enhancers suppresses FP-RMS tumorigenesis even in the presence of PAX3-FOXO1 oncogene. Knockdown or genetic knockout of FOXF1 induces myogenic differentiation in PAX3-FOXO1-positive FP-RMS. Over-expression of FOXF1 decreases myogenic differentiation in primary human myoblasts. In FP-RMS tumor cells, FOXF1 protein binds chromatin near enhancers associated with FP-RMS gene signature. FOXF1 cooperates with PAX3-FOXO1 and E-box transcription factors MYOD1 and MYOG to regulate FP-RMS-specific gene expression. Altogether, FOXF1 functions downstream of PAX3-FOXO1 to promote FP-RMS tumorigenesis.
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