PMID- 33837564 OWN - NLM STAT- MEDLINE DCOM- 20210906 LR - 20210906 IS - 1097-0215 (Electronic) IS - 0020-7136 (Linking) VI - 149 IP - 3 DP - 2021 Aug 1 TI - FOXD1 promotes dedifferentiation and targeted therapy resistance in melanoma by regulating the expression of connective tissue growth factor. PG - 657-674 LID - 10.1002/ijc.33591 [doi] AB - Metastatic melanoma is an aggressive skin cancer and associated with a poor prognosis. In clinical terms, targeted therapy is one of the most important treatments for patients with BRAF(V600E) -mutated advanced melanoma. However, the development of resistance to this treatment compromises its therapeutic success. We previously demonstrated that forkhead box D1 (FOXD1) regulates melanoma migration and invasion. Here, we found that FOXD1 was highly expressed in melanoma cells and was associated with a poor survival of patients with metastatic melanoma. Upregulation of FOXD1 expression enhanced melanoma cells' resistance to vemurafenib (BRAF inhibitor [BRAFi]) or vemurafenib and cobimetinib (MEK inhibitor) combination treatment whereas loss of FOXD1 increased the sensitivity to treatment. By comparing gene expression levels between FOXD1 knockdown (KD) and overexpressing (OE) cells, we identified the connective tissue growth factor (CTGF) as a downstream factor of FOXD1. Chromatin immunoprecipitation and luciferase assay demonstrated the direct binding of FOXD1 to the CTGF promoter. Similar to FOXD1, knockdown of CTGF increased the sensitivity of BRAFi-resistant cells to vemurafenib. FOXD1 KD cells treated with recombinant CTGF protein were less sensitive towards vemurafenib compared to untreated FOXD1 KD cells. Based on these findings, we conclude that FOXD1 might be a promising new diagnostic marker and a therapeutic target for the treatment of targeted therapy resistant melanoma. CI - (c) 2021 The Authors. International Journal of Cancer published by John Wiley & Sons Ltd on behalf of UICC. FAU - Sun, Qian AU - Sun Q AD - Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany. AD - Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht Karl University of Heidelberg, Mannheim, Germany. FAU - Novak, Daniel AU - Novak D AD - Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany. AD - Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht Karl University of Heidelberg, Mannheim, Germany. FAU - Huser, Laura AU - Huser L AD - Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany. AD - Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht Karl University of Heidelberg, Mannheim, Germany. FAU - Poelchen, Juliane AU - Poelchen J AD - Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany. AD - Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht Karl University of Heidelberg, Mannheim, Germany. FAU - Wu, Huizi AU - Wu H AD - Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany. AD - Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht Karl University of Heidelberg, Mannheim, Germany. AD - BGI Genomics, Beijing Genomics Institute, Shenzhen, China. FAU - Granados, Karol AU - Granados K AD - Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany. AD - Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht Karl University of Heidelberg, Mannheim, Germany. AD - Department of Biochemistry, School of Medicine, University of Costa Rica (UCR), San Jose, Costa Rica. FAU - Federico, Aniello AU - Federico A AD - Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany. AD - Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht Karl University of Heidelberg, Mannheim, Germany. FAU - Liu, Ke AU - Liu K AD - Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany. AD - Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht Karl University of Heidelberg, Mannheim, Germany. AD - Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China. FAU - Steinfass, Tamara AU - Steinfass T AD - Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany. AD - Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht Karl University of Heidelberg, Mannheim, Germany. FAU - Vierthaler, Marlene AU - Vierthaler M AD - Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany. AD - Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht Karl University of Heidelberg, Mannheim, Germany. FAU - Umansky, Viktor AU - Umansky V AUID- ORCID: 0000-0003-0259-1839 AD - Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany. AD - Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht Karl University of Heidelberg, Mannheim, Germany. FAU - Utikal, Jochen AU - Utikal J AUID- ORCID: 0000-0001-5316-0241 AD - Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany. AD - Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht Karl University of Heidelberg, Mannheim, Germany. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210506 PL - United States TA - Int J Cancer JT - International journal of cancer JID - 0042124 RN - 0 (Azetidines) RN - 0 (Biomarkers, Tumor) RN - 0 (CCN2 protein, human) RN - 0 (FOXD1 protein, human) RN - 0 (Forkhead Transcription Factors) RN - 0 (Piperidines) RN - 139568-91-5 (Connective Tissue Growth Factor) RN - 207SMY3FQT (Vemurafenib) RN - ER29L26N1X (cobimetinib) SB - IM MH - Antineoplastic Combined Chemotherapy Protocols/*pharmacology MH - Apoptosis MH - Azetidines/administration & dosage MH - Biomarkers, Tumor/genetics/metabolism MH - *Cell Dedifferentiation MH - Cell Proliferation MH - Connective Tissue Growth Factor/genetics/*metabolism MH - *Drug Resistance, Neoplasm MH - Forkhead Transcription Factors/genetics/*metabolism MH - *Gene Expression Regulation, Neoplastic MH - Humans MH - Melanoma/*drug therapy/genetics/metabolism/pathology MH - Molecular Targeted Therapy MH - Mutation MH - Piperidines/administration & dosage MH - Prognosis MH - Signal Transduction MH - Survival Rate MH - Tumor Cells, Cultured MH - Vemurafenib/administration & dosage OTO - NOTNLM OT - FOXD1 OT - dedifferentiation OT - melanoma OT - resistance OT - targeted therapy EDAT- 2021/04/11 06:00 MHDA- 2021/09/07 06:00 CRDT- 2021/04/10 06:05 PHST- 2021/03/22 00:00 [revised] PHST- 2020/12/23 00:00 [received] PHST- 2021/03/26 00:00 [accepted] PHST- 2021/04/11 06:00 [pubmed] PHST- 2021/09/07 06:00 [medline] PHST- 2021/04/10 06:05 [entrez] AID - 10.1002/ijc.33591 [doi] PST - ppublish SO - Int J Cancer. 2021 Aug 1;149(3):657-674. doi: 10.1002/ijc.33591. Epub 2021 May 6.