MiR-506 suppresses proliferation, migration, and invasion of melanoma cells by modulating EMT and DNA damage homologous recombination repair pathway
[Objective] To investigate the biological function of miR-506 in malignant melanoma and its regulatory mechanism on mesenchymal epithelial transition (MET) and DNA damage homologous recombination repair pathway. [Methods] The expression of miR-506 in 48 cases of fresh malignant melanoma tissues was...
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editoiral office of Journal of Diagnosis and Therapy on Dermato-venereology
2025-07-01
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| Series: | Pifu-xingbing zhenliaoxue zazhi |
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| Online Access: | http://pfxbzlx.gdvdc.com/EN/10.3969/j.issn.1674-8468.2025.07.002 |
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| _version_ | 1849338220233359360 |
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| author | LI Ting XIANG Lijie FU Laihua HAO Mengze LIU Xinyue YANG Jilong |
| author_facet | LI Ting XIANG Lijie FU Laihua HAO Mengze LIU Xinyue YANG Jilong |
| author_sort | LI Ting |
| collection | DOAJ |
| description | [Objective] To investigate the biological function of miR-506 in malignant melanoma and its regulatory mechanism on mesenchymal epithelial transition (MET) and DNA damage homologous recombination repair pathway. [Methods] The expression of miR-506 in 48 cases of fresh malignant melanoma tissues was detected by qRT-PCR. The expression of MET and DNA damage-related proteins in the tissues of 147 patients with malignant melanoma were detected by IHC. The human malignant melanoma cell lines A375 and A875 were used for assessing cell function. Following overexpression or inhibition of miR-506, cell function assays such as MTT and Transwell chamber experiments were conducted to verify its effects on the proliferation, migration, and invasion of malignant melanoma cells. Western blot analysis was used to further examine the impact of miR-506 on the expression of MET-related proteins and homologous recombination pathways of DNA damage. Survival analysis using Kaplan Meier method. [Results] The expression levels of miR-506 were low in metastatic lesions and high in primary lesions. Its high expression was associated with longer overall survival (OS) (P=0.002), disease-free survival (DFS) (P<0.001) and progression-free survival (PFS) (P=0.041). High expression levels of mesenchymal marker N-cadherin indicated poorer overall survival (P=0.026), while high expression levels of epithelial marker E-cadherin indicated better overall survival (P=0.006). High expression levels of DNA damage homologous recombination related proteins RAD51 and ATM were associated with poor OS (RAD51: P=0.014, ATM: P=0.002), while high expression of RAD52 was associated with good OS (P=0.006). Spearman correlation analysis showed that miR-506 was negatively correlated with the expression of Vimentin and Slug (r=-0.38, P=0.008; r=-0.36, P=0.012), and also negatively correlated with RAD51 (r=-0.47, P=0.001). Functional cell assays showed that overexpression of miR-506 inhibited the proliferation, migration, and invasion of malignant melanoma cells. Overexpression of miR-506 decreased the expression of N-cadherin, Vimentin, Slug, and RAD51. [Conclusions] MiR-506, MET-associated proteins, and DNA damage homologous recombination-associated proteins are associated with the prognosis of patients with malignant melanoma. As a tumor suppressor gene, miR-506 may inhibit the proliferation, migration, and invasion of melanoma cells by regulating MET-related proteins and the homologous recombination repair pathway. |
| format | Article |
| id | doaj-art-a1cd90d71db54ed0ae2d41b2280c86fe |
| institution | Kabale University |
| issn | 1674-8468 |
| language | zho |
| publishDate | 2025-07-01 |
| publisher | editoiral office of Journal of Diagnosis and Therapy on Dermato-venereology |
| record_format | Article |
| series | Pifu-xingbing zhenliaoxue zazhi |
| spelling | doaj-art-a1cd90d71db54ed0ae2d41b2280c86fe2025-08-20T03:44:28Zzhoeditoiral office of Journal of Diagnosis and Therapy on Dermato-venereologyPifu-xingbing zhenliaoxue zazhi1674-84682025-07-0132746347510.3969/j.issn.1674-8468.2025.07.002MiR-506 suppresses proliferation, migration, and invasion of melanoma cells by modulating EMT and DNA damage homologous recombination repair pathwayLI Ting0XIANG Lijie1FU Laihua2HAO Mengze3LIU Xinyue4YANG Jilong5Departments of Bone and Soft Tissue Tumor, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, ChinaDepartments of Bone and Soft Tissue Tumor, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, ChinaDepartments of Bone and Soft Tissue Tumor, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, ChinaDepartments of Bone and Soft Tissue Tumor, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, ChinaDepartments of Bone and Soft Tissue Tumor, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, ChinaDepartments of Bone and Soft Tissue Tumor, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China[Objective] To investigate the biological function of miR-506 in malignant melanoma and its regulatory mechanism on mesenchymal epithelial transition (MET) and DNA damage homologous recombination repair pathway. [Methods] The expression of miR-506 in 48 cases of fresh malignant melanoma tissues was detected by qRT-PCR. The expression of MET and DNA damage-related proteins in the tissues of 147 patients with malignant melanoma were detected by IHC. The human malignant melanoma cell lines A375 and A875 were used for assessing cell function. Following overexpression or inhibition of miR-506, cell function assays such as MTT and Transwell chamber experiments were conducted to verify its effects on the proliferation, migration, and invasion of malignant melanoma cells. Western blot analysis was used to further examine the impact of miR-506 on the expression of MET-related proteins and homologous recombination pathways of DNA damage. Survival analysis using Kaplan Meier method. [Results] The expression levels of miR-506 were low in metastatic lesions and high in primary lesions. Its high expression was associated with longer overall survival (OS) (P=0.002), disease-free survival (DFS) (P<0.001) and progression-free survival (PFS) (P=0.041). High expression levels of mesenchymal marker N-cadherin indicated poorer overall survival (P=0.026), while high expression levels of epithelial marker E-cadherin indicated better overall survival (P=0.006). High expression levels of DNA damage homologous recombination related proteins RAD51 and ATM were associated with poor OS (RAD51: P=0.014, ATM: P=0.002), while high expression of RAD52 was associated with good OS (P=0.006). Spearman correlation analysis showed that miR-506 was negatively correlated with the expression of Vimentin and Slug (r=-0.38, P=0.008; r=-0.36, P=0.012), and also negatively correlated with RAD51 (r=-0.47, P=0.001). Functional cell assays showed that overexpression of miR-506 inhibited the proliferation, migration, and invasion of malignant melanoma cells. Overexpression of miR-506 decreased the expression of N-cadherin, Vimentin, Slug, and RAD51. [Conclusions] MiR-506, MET-associated proteins, and DNA damage homologous recombination-associated proteins are associated with the prognosis of patients with malignant melanoma. As a tumor suppressor gene, miR-506 may inhibit the proliferation, migration, and invasion of melanoma cells by regulating MET-related proteins and the homologous recombination repair pathway.http://pfxbzlx.gdvdc.com/EN/10.3969/j.issn.1674-8468.2025.07.002malignant melanomamir-506mesenchymal epithelial transformationdna damage homologous recombination repair |
| spellingShingle | LI Ting XIANG Lijie FU Laihua HAO Mengze LIU Xinyue YANG Jilong MiR-506 suppresses proliferation, migration, and invasion of melanoma cells by modulating EMT and DNA damage homologous recombination repair pathway Pifu-xingbing zhenliaoxue zazhi malignant melanoma mir-506 mesenchymal epithelial transformation dna damage homologous recombination repair |
| title | MiR-506 suppresses proliferation, migration, and invasion of melanoma cells by modulating EMT and DNA damage homologous recombination repair pathway |
| title_full | MiR-506 suppresses proliferation, migration, and invasion of melanoma cells by modulating EMT and DNA damage homologous recombination repair pathway |
| title_fullStr | MiR-506 suppresses proliferation, migration, and invasion of melanoma cells by modulating EMT and DNA damage homologous recombination repair pathway |
| title_full_unstemmed | MiR-506 suppresses proliferation, migration, and invasion of melanoma cells by modulating EMT and DNA damage homologous recombination repair pathway |
| title_short | MiR-506 suppresses proliferation, migration, and invasion of melanoma cells by modulating EMT and DNA damage homologous recombination repair pathway |
| title_sort | mir 506 suppresses proliferation migration and invasion of melanoma cells by modulating emt and dna damage homologous recombination repair pathway |
| topic | malignant melanoma mir-506 mesenchymal epithelial transformation dna damage homologous recombination repair |
| url | http://pfxbzlx.gdvdc.com/EN/10.3969/j.issn.1674-8468.2025.07.002 |
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