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Cao W, Ni L, Li P, Wang QX, Li MM, Huang SH, Dang NN. miR-498 Targets UBE2T to Inhibit the Proliferation of Malignant Melanoma Cells. Technol Cancer Res Treat 2022; 21:15330338221082431. [PMID: 35243940 PMCID: PMC8902009 DOI: 10.1177/15330338221082431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 02/02/2022] [Accepted: 02/04/2022] [Indexed: 11/16/2022] Open
Abstract
Background: Malignant melanoma is a common malignant tumor and one of the tumors with the fastest growing incidence. The effect of microRNAs on the biological processing of malignant melanoma cells also have been reported. This study explores the ability of miR-498 to regulate the progression of malignant melanoma cells. Methods: The expression of miR-498 was detected by RT-qPCR. The proliferation, invasion, and migration of malignant melanoma cells were measured by cell counting kit-8, clone formation, and transwell assays. Flow cytometry assay detected the percentage of apoptotic cells. Western blot was used to detect the expression of markers related to epithelial-mesenchymal transition. The correction of miR-498 and UBE2T was explored by dual-luciferase assay and Western blot. Results: Overexpression of miR-498 inhibited the proliferation, invasion, migration, and induced cell apoptosis of M14 and A375 cells. In addition, the expression of epithelial-mesenchymal transition-related factors was altered by the overexpression of miR-498. miR-498 can directly target UBE2T 3'-UTR and inhibit UBE2T protein expression. The overexpression of UBE2T reversed the inhibitory effects of miR-498 on the progression of malignant melanoma cells. Furthermore, UBE2T mRNA was significantly highly expressed in malignant melanoma tissues. The high expression of UBE2T was associated with the poor overall survival rate of malignant melanoma patients. Conclusions: Altogether, our findings demonstrated that miR-498 significantly inhibited the proliferation, invasion, migration, and induced apoptosis of malignant melanoma cells and confirmed that miR-498 regulated malignant melanoma cell progression by targeting UBE2T.
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Affiliation(s)
- Wen Cao
- Health College, Yantai Nanshan University, Yantai, Shandong, China
| | - Li Ni
- Department of Dermatology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Pin Li
- Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Shandong, China
| | - Qi-Xia Wang
- Institute of Basic Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Ming-Ming Li
- Department of Dermatology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Shu-Hong Huang
- Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Shandong, China
- Institute of Basic Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Ning-Ning Dang
- Department of Dermatology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
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Dang NN, Li XB, Zhang M, Han C, Fan XY, Huang SH. NLGN3 Upregulates Expression of ADAM10 to Promote the Cleavage of NLGN3 via Activating the LYN Pathway in Human Gliomas. Front Cell Dev Biol 2021; 9:662763. [PMID: 34485271 PMCID: PMC8415229 DOI: 10.3389/fcell.2021.662763] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 04/06/2021] [Indexed: 12/03/2022] Open
Abstract
The neuron derived synaptic adhesion molecular neuroligin-3 (NLGN3) plays an important role in glioma growth. While the role of autocrine NLGN3 in glioma has not been well-studied. The expression of NLGN3 in glioma was detected using immunohistochemistry. We further explored its function and regulatory mechanism in U251 and U87 cells with high expression of NLGN3. Knockdown of endogenous NLGN3 significantly reduced the proliferation, migration, and invasion of glioma cells and down-regulated the activity of the PI3K-AKT, ERK1/2, and LYN signaling pathways. In comparison, overexpression of NLGN3 yielded opposite results. Our results further demonstrate that LYN functions as a feedback mechanism to promote NLGN3 cleavage. This feedback regulation was achieved by upregulating the ADAM10 sheddase responsible for NLGN3 cleavage. Inhibition of ADAM10 suppressed the proliferation, migration, and invasion of glioma cells; oppositely, the expression of ADAM10 was correlated with a higher likelihood of lower grade glioma (LGG) in the brain. Our study demonstrates that glioma-derived NLGN3 promotes glioma progression by upregulating activity of LYN and ADAM10, which in turn promote NLGN3 cleavage to form a positive feedback loop. This pathway may open a potential therapeutic window for the treatment of human glioma.
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Affiliation(s)
- Ning-Ning Dang
- Department of Dermatology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Xiao-Bing Li
- Institute of Basic Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Mei Zhang
- Department of General Surgery, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Chen Han
- Institute of Basic Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Xiao-Yong Fan
- Department of Neurosurgery, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Shu-Hong Huang
- Institute of Basic Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
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Dang NN, Jiao J, Meng X, An Y, Han C, Huang S. Abnormal overexpression of G9a in melanoma cells promotes cancer progression via upregulation of the Notch1 signaling pathway. Aging (Albany NY) 2020; 12:2393-2407. [PMID: 32015216 PMCID: PMC7041736 DOI: 10.18632/aging.102750] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 01/07/2020] [Indexed: 12/17/2022]
Abstract
Malignant melanoma is a type of very dangerous skin cancer. Histone modifiers usually become dysregulated during the process of carcinoma development, thus there is potential for a histone modifier inhibitor as a useful drug for cancer therapy. There is a multitude of evidence regarding the role of G9a, a histone methyltransferase (HMTase), in tumorigenesis. In this study, we first showed that G9a was significantly upregulated in melanoma patients. Using the TCGA database, we found a significantly higher expression of G9a in primary melanoma samples (n = 461) compared to normal skin samples (n = 551). Next, we knocked down G9a in human M14 and A375 melanoma cell lines in vitro via small interfering RNA (siRNA). This resulted in a significant decrease in cell viability, migration and invasion, and an increase in cell apoptosis. UNC0642 is a small molecule inhibitor of G9a that demonstrates minimal cell toxicity and good in vivo pharmacokinetic characteristics. We investigated the role of UNC0642 in melanoma cells, and detected its anti-cancer effects in vitro and in vivo. Next, we treated cells with UNC0642, and observed a significant decrease in cell viability in M14 and A375 cell lines. Furthermore, treatment with UNC0642 resulted in increased apoptosis. In immunocompetent mice bearing A375 engrafts, treatment with UNC0642 inhibited tumor growth. Results of Western blot analysis revealed that administration of UNC0642 or silencing of G9a expression by siRNA reduced Notch1 expression significantly and decreased the level of Hes1 in A375. All in all, the data from our study demonstrates potential of G9a as a therapeutic target in the treatment of melanoma.
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Affiliation(s)
- Ning-Ning Dang
- Department of Dermatology, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong Province, China
| | - Jing Jiao
- Department of Dermatology, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong Province, China
| | - Xianguang Meng
- Department of Dermatology, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong Province, China
| | - Yunhe An
- Beijing Center for Physical and Chemical Analysis, Beijing, China
| | - Chen Han
- Institute of Basic Medicine, The First Affiliated Hospital of Shandong First Medical University, Jinan, Shandong Province, China
| | - Shuhong Huang
- Institute of Basic Medicine, The First Affiliated Hospital of Shandong First Medical University, Jinan, Shandong Province, China
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Dang N, Meng X, Qin G, An Y, Zhang Q, Cheng X, Huang S. α5-nAChR modulates melanoma growth through the Notch1 signaling pathway. J Cell Physiol 2020; 235:7816-7826. [PMID: 31907929 DOI: 10.1002/jcp.29435] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 12/23/2019] [Indexed: 11/09/2022]
Abstract
The roles of α5-nicotinic acetylcholine receptors (α5-nAChRs) in various types of solid cancer have been reported; however, its role in melanoma remains unknown. We knocked down α5-nAChR expression in melanoma cells to investigate the role of α5-nAChR in the proliferation, migration, and invasion of melanoma cells, and its effect on downstream signaling pathways. Using immunohistochemical analysis, we determined that α5-nAChR expression is significantly increased in human melanoma tissues and cell lines compared with normal human skin tissues. Knocking down α5-nAChR expression in melanoma cells in culture significantly inhibited the proliferation, migration, and invasiveness of melanoma cell lines. Specifically, knockdown of α5-nAChR inhibited PI3K-AKT and ERK1/2 signaling activity. Moreover, we confirmed that the Notch1 signaling pathway is the downstream target of α5-nAChR in melanoma. Our findings suggest that α5-nAChR plays a critical role in melanoma development and progression, and that targeting α5-nAChR may be a strategy for melanoma treatment.
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Affiliation(s)
- NingNing Dang
- Department of Dermatology, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong, China
| | - Xianguang Meng
- Department of Dermatology, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong, China
| | - Guojing Qin
- Department of Dermatology, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong, China
| | - Yunhe An
- Beijing Center for Physical and Chemical Analysis, Beijing, China
| | - QianQian Zhang
- Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, Shandong, China
| | - Xiaoyan Cheng
- Beijing Center for Physical and Chemical Analysis, Beijing, China
| | - Shuhong Huang
- Institute of Basic Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong, China
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Dang NN, Pang SG, Song HY, An LG, Ma XL. Filaggrin silencing by shRNA directly impairs the skin barrier function of normal human epidermal keratinocytes and then induces an immune response. ACTA ACUST UNITED AC 2014; 48:39-45. [PMID: 25493381 PMCID: PMC4288491 DOI: 10.1590/1414-431x20144047] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Accepted: 08/28/2014] [Indexed: 01/25/2023]
Abstract
The objective of this study was to investigate whether a single defect in skin
barrier function simulated by filaggrin silencing could induce Th2-predominant
inflammation. Filaggrin gene expression was silenced in cultured normal human
epidermal keratinocytes (NHEKs) using small hairpin RNA (shRNA, GTTGGCTCAAGCATATTATTT).
The efficacy of silencing was confirmed by polymerase chain reaction (PCR) and
Western blotting. Filaggrin-silenced cells (LV group), shRNA control cells (NC
group), and noninfected cells (Blank group) were evaluated. The expression of
cornified cell envelope-related proteins, including cytokeratin (CK)-5, -10, -14,
loricrin, involucrin, and transglutaminase (TGM)-1, was detected by Western blotting.
Interleukins (IL)-2, IL-4, IL-5, IL-12p70, IL-13, and interferon-gamma (IFN-γ) were
detected by enzyme-linked immunosorbent assay (ELISA). After filaggrin was
successfully silenced by shRNA, the expressions of CK-5, -10, -14, involucrin, and
TGM-1 in NHEKs were significantly downregulated compared to the Blank and NC groups
(P<0.05 or P<0.01); only loricrin expression was markedly upregulated
(P<0.01). Filaggrin silencing also resulted in significant increases of IL-2,
IL-4, IL-5, and IL-13 (P<0.05 or P<0.01), and significant decreases of IL-12p70
and IFN-γ (P<0.01) compared with cells in the Blank and NC groups. Filaggrin
silencing impaired normal skin barrier function mainly by targeting the cornified
cell envelope. The immune response after filaggrin silencing was characterized by Th2
cells, mainly because of the inhibition of IFN-γ expression. Lack of filaggrin may
directly impair skin barrier function and then further induce the immune
response.
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Affiliation(s)
- N N Dang
- Department of Dermatology, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong Province, China
| | - S G Pang
- Department of Endocrinology, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong Province, China
| | - H Y Song
- Department of Dermatology, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong Province, China
| | - L G An
- College of Life Science, Shandong Normal University, Jinan, Shandong Province, China
| | - X L Ma
- Central Laboratory, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong Province, China
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