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Colares DF, Domingos NRDS, Mafra RP, da Silva LP, Pinto LP, de Souza LB. Is epithelial-mesenchymal transition related to the biological behavior of salivary gland neoplasms? Arch Oral Biol 2024; 165:106017. [PMID: 38852529 DOI: 10.1016/j.archoralbio.2024.106017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 04/28/2024] [Accepted: 05/28/2024] [Indexed: 06/11/2024]
Abstract
OBJECTIVE To evaluate and compare the expression of E-cadherin, Snail1 and Twist1 in pleomorphic adenomas (PAs), adenoid cystic carcinomas (AdCCa) and carcinoma ex-pleomorphic adenomas (CaexPA) of salivary glands, as well as investigate possible associations with clinicopathological parameters. STUDY DESIGN E-cadherin, Snail1 and Twist1 antibody immunostaining were analyzed semiquantitatively in 20 PAs, 20 AdCCas and 10 CaexPAs. Cases were classified as low and high expression for analysis of the association with clinicopathological parameters. RESULTS Compared to PAs, AdCCas and CaexPAs exhibited higher nuclear expression of Snail1 (p = 0.021 and p = 0.028, respectively) and Twist1 (p = 0.009 and p = 0.001). Membranous and cytoplasmic expression of E-cadherin were positively correlated in PAs, AdCCas and CaexPAs (r = 0.645, p = 0.002; r = 0.824, p < 0.001; r = 0.677, p = 0.031). In PAs, positive correlation was found between nuclear expression of Snail1 and membrane expression of E-cadherin (r = 0.634; p = 0.003), as well as between nuclear expression of Snail1 and Twist1 (r = 0.580; p = 0.007). Negative correlations were detected between membrane expression of E-cadherin and cytoplasmic expression of Snail1 in AdCCas (r = - 0.489; p = 0.029). CONCLUSIONS E-cadherin, Twist1, and Snail1 may participate in modulating events related to cell differentiation and adhesion in PAs and to biological behavior in AdCCas and CaexPAs, which indicates the involvement of EMT in these processes. Furthermore, the expression of these proteins in these carcinomas may reflect the plasticity feature of EMT.
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Affiliation(s)
- Débora Frota Colares
- Department of Oral Pathology, Federal University of Rio Grande do Norte, Natal, RN, Brazil
| | | | - Rodrigo Porpino Mafra
- Department of Oral Pathology, Federal University of Rio Grande do Norte, Natal, RN, Brazil
| | - Leorik Pereira da Silva
- Oral Histopathology Service, Health and Rural Technology Center, Federal University of Campina Grande, Patos, PB, Brazil
| | - Leão Pereira Pinto
- Department of Oral Pathology, Federal University of Rio Grande do Norte, Natal, RN, Brazil
| | - Lélia Batista de Souza
- Department of Oral Pathology, Federal University of Rio Grande do Norte, Natal, RN, Brazil.
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Boz Er AB, Er I. Targeting ITGβ3 to Overcome Trastuzumab Resistance through Epithelial-Mesenchymal Transition Regulation in HER2-Positive Breast Cancer. Int J Mol Sci 2024; 25:8640. [PMID: 39201327 PMCID: PMC11354641 DOI: 10.3390/ijms25168640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2024] [Revised: 08/05/2024] [Accepted: 08/07/2024] [Indexed: 09/02/2024] Open
Abstract
HER2-positive breast cancer, representing 15-20% of all breast cancer cases, often develops resistance to the HER2-targeted therapy trastuzumab. Unfortunately, effective treatments for advanced HER2-positive breast cancer remain scarce. This study aims to investigate the roles of ITGβ3, and Hedgehog signaling in trastuzumab resistance and explore the potential of combining trastuzumab with cilengitide as a therapeutic strategy. Quantitative gene expression analysis was performed to assess the transcription of EMT (epithelial-mesenchymal transition) markers Slug, Snail, Twist2, and Zeb1 in trastuzumab-resistant HER2-positive breast cancer cells. The effects of ITGβ3 and Hedgehog signaling were investigated. Additionally, the combination therapy of trastuzumab and cilengitide was evaluated. Acquired trastuzumab resistance induced the transcription of Slug, Snail, Twist2, and Zeb1, indicating increased EMT. This increased EMT was mediated by ITGB3 and Hedgehog signaling. ITGβ3 regulated both the Hedgehog pathway and EMT, with the latter being independent of the Hedgehog pathway. The combination of trastuzumab and cilengitide showed a synergistic effect, reducing both EMT and Hedgehog pathway activity. Targeting ITGβ3 with cilengitide, combined with trastuzumab, effectively suppresses the Hedgehog pathway and EMT, offering a potential strategy to overcome trastuzumab resistance and improve outcomes for HER2-positive breast cancer patients.
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Affiliation(s)
- Asiye Busra Boz Er
- Department of Medical Biology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize 53200, Turkey;
| | - Idris Er
- Department of Medical Biology, Faculty of Medicine, Karadeniz Technical University, Trabzon 61080, Turkey
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Xu J, Chen S, Hao T, Liu G, Zhang K, Zhang C, He Y. MEX3A promotes colorectal cancer migration, invasion and EMT via regulating the Wnt/β-catenin signaling pathway. J Cancer Res Clin Oncol 2024; 150:319. [PMID: 38914858 PMCID: PMC11196291 DOI: 10.1007/s00432-024-05845-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Accepted: 06/08/2024] [Indexed: 06/26/2024]
Abstract
BACKGROUND Mex-3 RNA binding family members are well-established to be important in cancer development and progression. However, the functions of Mex-3 RNA binding family member A (MEX3A) in colorectal cancer (CRC) metastasis remain poorly understood. In this study, we aim to reveal the function and the mechanism of MEX3A in promoting CRC metastasis. METHODS We used multiple databases including TCGA database, UALCAN, LinkedOmics, CancerSEA, GeneMANIA and STRING database to investigate the expression, the functions and underlying molecular mechanism of MEX3A in CRC. Multiple experimental methods were adapted to determine the study, including real-time PCR (qPCR), immunohistochemistry (IHC), western blot (WB), transfection, transwell migration and invasion assays, immunofluorescence (IF). RESULTS We found that MEX3A was significantly upregulated and correlated to tumor stage and lymph nodal metastasis in CRC through bioinformatics analysis and tissue immunohistochemistry (IHC). The higher expression of MEX3A in CRC correlated with poor recurrence-free survival (RFS) and overall survival (OS). In vitro studies showed that knockdown of MEX3A suppressed EMT transition, invasion and metastasis of CRC cells. Mechanistically, we revealed that MEX3A promotes epithelial-mesenchymal transition (EMT), invasion and metastasis of CRC cells by upregulating the Wnt/β-catenin signaling pathway. CONCLUSION In conclusion, our study reveals that MEX3A promotes CRC migration, invasion and EMT via regulating the Wnt/β-catenin signaling pathway and could be a novel therapeutic target for this patient population.
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Affiliation(s)
- Jiannan Xu
- Center of Digestive Disease, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong, 518107, China
- Department of Thoracic Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Songyao Chen
- Center of Digestive Disease, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong, 518107, China
| | - Tengfei Hao
- Center of Digestive Disease, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong, 518107, China
| | - Guangyao Liu
- Center of Digestive Disease, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong, 518107, China
| | - Kai Zhang
- Department of Thoracic Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.
| | - Changhua Zhang
- Center of Digestive Disease, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong, 518107, China.
| | - Yulong He
- Center of Digestive Disease, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong, 518107, China.
- Center of Gastrointestinal Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.
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de Santana DA, Braga PR, Camillo-Coutinho CM, Freitas VS, Cury PR, Ribeiro DA, de Araújo IB, de Aquino Xavier FC, Dos Santos JN. E-CADERIN, N-CADERIN, SLUG, SNAIL, and TWIST contribute to epithelial-mesenchymal transition in salivary gland tumors. J Oral Pathol Med 2024; 53:193-200. [PMID: 38351435 DOI: 10.1111/jop.13516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 01/24/2024] [Accepted: 01/30/2024] [Indexed: 03/19/2024]
Abstract
BACKGROUND Transcription factors are important in the epithelial-mesenchymal transition process and are possibly related to the development of a more invasive tumor phenotype. Thus, the objective of this study was to analyze the expression and identify the localization of cellular markers related to the epithelial-mesenchymal transition process in salivary gland tumors. STUDY DESIGN The expression and localization of E-CADERIN, N-CADERIN, SLUG, SNAIL, and TWIST were evaluated, using immunohistochemistry, in 48 salivary gland tumors, being 17 pleomorphic adenomas (PA), 14 adenoid cystic carcinomas (ACC), and 17 mucoepidermoid carcinomas (MEC). these proteins were compared to clinical and histopathologic parameters. normal gland tissues were included for immunohistochemical comparisons. RESULTS ACC and MEC cases showed higher expression of SNAIL compared to PA. MEC showed high expression of SLUG and TWIST. Low expression of N-CADHERIN, SNAIL, and TWIST in ACC was frequent in T3 and T4. High expression of TWIST in MEC was more frequent at age ≥ 40 years A positive correlation was only observed between N-cadherin/SNAIL in ACC, between SNAIL/TWIST in MEC, and between SLUG/TWIST in PA. CONCLUSION This study provided insight into EMT-related proteins (E-cadherin, N-cadherin, SNAIL, SLUG, and TWIST) and their contribution to the maintenance of morphogenesis and the development of the salivary gland tumors and showed a positive correlation among N-CADHERIN/SNAIL in ACC and SNAIL/TWIST in MEC.
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Affiliation(s)
- Dandara Andrade de Santana
- Dentistry and Health Postgraduate Program, School of Dentistry, Federal University of Bahia, Salvador, Brazil
- Laboratory of Oral and Maxillofacial Pathology, School of Dentistry, Federal University of Bahia, Salvador, Brazil
| | - Poliana Ramos Braga
- Dentistry and Health Postgraduate Program, School of Dentistry, Federal University of Bahia, Salvador, Brazil
| | | | - Valéria Souza Freitas
- Department of Health, School of Dentistry, State University of Feira de Santana, Feira de Santana, Brazil
| | | | - Daniel Araki Ribeiro
- Department of Bioscience, Institute of Health and Society, Federal University of São Paulo, São Paulo, Brazil
| | | | - Flávia Caló de Aquino Xavier
- Dentistry and Health Postgraduate Program, School of Dentistry, Federal University of Bahia, Salvador, Brazil
- Laboratory of Oral and Maxillofacial Pathology, School of Dentistry, Federal University of Bahia, Salvador, Brazil
| | - Jean Nunes Dos Santos
- Dentistry and Health Postgraduate Program, School of Dentistry, Federal University of Bahia, Salvador, Brazil
- Laboratory of Oral and Maxillofacial Pathology, School of Dentistry, Federal University of Bahia, Salvador, Brazil
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Tokumasu R, Yasuhara R, Kang S, Funatsu T, Mishima K. Transcription factor FoxO1 regulates myoepithelial cell diversity and growth. Sci Rep 2024; 14:1069. [PMID: 38212454 PMCID: PMC10784559 DOI: 10.1038/s41598-024-51619-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 01/08/2024] [Indexed: 01/13/2024] Open
Abstract
Salivary gland myoepithelial cells regulate saliva secretion and have been implicated in the histological diversity of salivary gland tumors. However, detailed functional analysis of myoepithelial cells has not been determined owing to the few of the specific marker to isolate them. We isolated myoepithelial cells from the submandibular glands of adult mice using the epithelial marker EpCAM and the cell adhesion molecule CD49f as indicators and found predominant expression of the transcription factor FoxO1 in these cells. RNA-sequence analysis revealed that the expression of cell cycle regulators was negatively regulated in FoxO1-overexpressing cells. Chromatin immunoprecipitation analysis showed that FoxO1 bound to the p21/p27 promoter DNA, indicating that FoxO1 suppresses cell proliferation through these factors. In addition, FoxO1 induced the expression of ectodysplasin A (Eda) and its receptor Eda2r, which are known to be associated with X-linked hypohidrotic ectodermal dysplasia and are involved in salivary gland development in myoepithelial cells. FoxO1 inhibitors suppressed Eda/Eda2r expression and salivary gland development in primordial organ cultures after mesenchymal removal. Although mesenchymal cells are considered a source of Eda, myoepithelial cells might be one of the resources of Eda. These results suggest that FoxO1 regulates myoepithelial cell proliferation and Eda secretion during salivary gland development in myoepithelial cells.
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Affiliation(s)
- Rino Tokumasu
- Division of Pathology, Department of Oral Diagnostic Sciences, School of Dentistry, Showa University, Tokyo, 142-8555, Japan
- Division of Dentistry for Persons with Disabilities, Department of Perioperative Medicine, Graduate School of Dentistry, Showa University, Tokyo, 142-8555, Japan
| | - Rika Yasuhara
- Division of Pathology, Department of Oral Diagnostic Sciences, School of Dentistry, Showa University, Tokyo, 142-8555, Japan.
| | - Seya Kang
- Division of Dentistry for Persons with Disabilities, Department of Perioperative Medicine, School of Dentistry, Showa University, Tokyo, 142-8555, Japan
| | - Takahiro Funatsu
- Department of Pediatric Dentistry, School of Dentistry, Showa University, Tokyo, 142-8555, Japan
| | - Kenji Mishima
- Division of Pathology, Department of Oral Diagnostic Sciences, School of Dentistry, Showa University, Tokyo, 142-8555, Japan.
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Xu X, Xie J, Ling R, Ouyang S, Xiong G, Lu Y, Yun B, Zhang M, Wang W, Liu X, Chen D, Wang C. Single-cell transcriptomic analysis uncovers the origin and intratumoral heterogeneity of parotid pleomorphic adenoma. Int J Oral Sci 2023; 15:38. [PMID: 37679344 PMCID: PMC10484943 DOI: 10.1038/s41368-023-00243-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 08/16/2023] [Accepted: 08/16/2023] [Indexed: 09/09/2023] Open
Abstract
Pleomorphic adenoma (PA) is the most common benign tumour in the salivary gland and has high morphological complexity. However, the origin and intratumoral heterogeneity of PA are largely unknown. Here, we constructed a comprehensive atlas of PA at single-cell resolution and showed that PA exhibited five tumour subpopulations, three recapitulating the epithelial states of the normal parotid gland, and two PA-specific epithelial cell (PASE) populations unique to tumours. Then, six subgroups of PASE cells were identified, which varied in epithelium, bone, immune, metabolism, stemness and cell cycle signatures. Moreover, we revealed that CD36+ myoepithelial cells were the tumour-initiating cells (TICs) in PA, and were dominated by the PI3K-AKT pathway. Targeting the PI3K-AKT pathway significantly inhibited CD36+ myoepithelial cell-derived tumour spheres and the growth of PA organoids. Our results provide new insights into the diversity and origin of PA, offering an important clinical implication for targeting the PI3K-AKT signalling pathway in PA treatment.
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Affiliation(s)
- Xiuyun Xu
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Jiaxiang Xie
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Rongsong Ling
- Institute for Advanced Study, Shenzhen University, Shenzhen, China
| | - Shengqi Ouyang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Gan Xiong
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Yanwen Lu
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Bokai Yun
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Ming Zhang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Wenjin Wang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Xiqiang Liu
- Department of Oral and Maxillofacial Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Demeng Chen
- Center for Translational Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.
| | - Cheng Wang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China.
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China.
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China.
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Peng J, Yang KY, Li H, Zheng SS, Pan XY. Protein Z modulates the metastasis of lung adenocarcinoma cells. Open Life Sci 2023; 18:20220667. [PMID: 37528887 PMCID: PMC10389673 DOI: 10.1515/biol-2022-0667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 06/10/2023] [Accepted: 07/04/2023] [Indexed: 08/03/2023] Open
Abstract
Protein Z (PZ), a vitamin-K-dependent anticoagulant glycoprotein, is reported to be highly expressed in various malignant tissues and correlated with a poor prognosis in patients with lung cancer. This study aimed to investigate the pathological activity of PZ on lung cancer cell migration, invasion, and metastasis. PZ was assessed by Western blot in three non-small-cell lung cancer cell lines (A549, H1299, and H1975). Meanwhile,western blot was used to detect the expression of EMT pathway-related proteins (Slug, Vimentin, and N-cadherin) in the A549 cells knocked down with siRNA. The cellular proliferation, migration, and invasion were detected by Cell Counting Kit (CCK)-8, wound healing, and Transwell assays in the A549 cells. The results showed that PZ expression was higher in A549, H1299, and H1975 cells, according to Western blot. CCK-8, wound healing, and Transwell assays showed that knockdown of PZ significantly decreased cellular proliferation, migration, and invasion, as well as the protein levels of Slug, Vimentin, and N-cadherin in the A549 cells. In conclusion, the pro-metastasis activity of PZ may modulate the epithelial-mesenchymal transition pathway in lung cancer A549 cells.
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Affiliation(s)
- Jin Peng
- Department of Hematology, The First Affiliated Hospital of Guangdong Pharmaceutical University, 19 Nong Lin Road, Yuexiu District, Guangzhou 510080Guangdong, China
| | - Kai-Ying Yang
- Department of Hematology, The First Affiliated Hospital of Guangdong Pharmaceutical University, 19 Nong Lin Road, Yuexiu District, Guangzhou 510080Guangdong, China
| | - Huan Li
- Department of Hematology, The First Affiliated Hospital of Guangdong Pharmaceutical University, 19 Nong Lin Road, Yuexiu District, Guangzhou 510080Guangdong, China
| | - Shan-Shan Zheng
- Department of Hematology, The First Affiliated Hospital of Guangdong Pharmaceutical University, 19 Nong Lin Road, Yuexiu District, Guangzhou 510080Guangdong, China
| | - Xue-Yi Pan
- Department of Hematology, The First Affiliated Hospital of Guangdong Pharmaceutical University, 19 Nong Lin Road, Yuexiu District, Guangzhou 510080Guangdong, China
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Zhang D, Jiang Z, Hu J, Sun X, Zheng Y, Shen Y. Comprehensively prognostic and immunological analysis of snail family transcriptional repressor 2 in pan-cancer and identification in pancreatic carcinoma. Front Immunol 2023; 14:1117585. [PMID: 37251370 PMCID: PMC10213725 DOI: 10.3389/fimmu.2023.1117585] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 04/27/2023] [Indexed: 05/31/2023] Open
Abstract
Background Snail family transcriptional repressor 2 (SNAI2) is a transcription factor that induces epithelial to mesenchymal transition in neoplastic epithelial cells. It is closely related to the progression of various malignancies. However, the significance of SNAI2 in human pan-cancer is still largely unknown. Methods The Cancer Genome Atlas (TCGA), Genotype-Tissue Expression (GTEx), and Cancer Cell Line Encyclopedia (CCLE) databases were taken to examine the SNAI2 expression pattern in tissues and cancer cells. The link between SNAI2 gene expression levels and prognosis, as well as immune cell infiltration, was investigated using the Kaplan-Meier technique and Spearman correlation analysis. We also explored the expression and distribution of SNAI2 in various tumor tissues and cells by the THPA (Human Protein Atlas) database. We further investigated the relationship between SNAI2 expression levels and immunotherapy response in various clinical immunotherapy cohorts. Finally, the immunoblot was used to quantify the SNAI2 expression levels, and the proliferative and invasive ability of pancreatic cancer cells was determined by colony formation and transwell assays. Results We discovered heterogeneity in SNAI2 expression in different tumor tissues and cancer cell lines by exploring public datasets. The genomic alteration of SNAI2 existed in most cancers. Also, SNAI2 exhibits prognosis predictive ability in various cancers. SNAI2 was significantly correlated with immune-activated hallmarks, cancer immune cell infiltrations, and immunoregulators. It's worth noting that SNAI2 expression is significantly related to the effectiveness of clinical immunotherapy. SNAI2 expression was also found to have a high correlation with the DNA mismatch repair (MMR) genes and DNA methylation in many cancers. Finally, the knockdown of SNAI2 significantly weakened the proliferative and invasive ability of pancreatic cancer cells. Conclusion These findings suggested that SNAI2 could be used as a biomarker in human pan-cancer to detect immune infiltration and poor prognosis, which provides a new idea for cancer treatment.
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Affiliation(s)
- Dandan Zhang
- Department of General Surgery, the Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
- Jiangxi Key Laboratory of Molecular Medicine, the Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Zhenhong Jiang
- Jiangxi Key Laboratory of Molecular Medicine, the Second Affiliated Hospital of Nanchang University, Nanchang, China
- Department of Medical Genetics, the Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jianping Hu
- Jiangxi Key Laboratory of Molecular Medicine, the Second Affiliated Hospital of Nanchang University, Nanchang, China
- Department of Medical Genetics, the Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xiaoyun Sun
- Department of Medical Genetics, the Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yan Zheng
- Jiangxi Key Laboratory of Molecular Medicine, the Second Affiliated Hospital of Nanchang University, Nanchang, China
- Department of Medical Genetics, the Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yang Shen
- Jiangxi Key Laboratory of Molecular Medicine, the Second Affiliated Hospital of Nanchang University, Nanchang, China
- Department of Medical Genetics, the Second Affiliated Hospital of Nanchang University, Nanchang, China
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Matsumiya-Matsumoto Y, Morita Y, Uzawa N. Pleomorphic Adenoma of the Salivary Glands and Epithelial–Mesenchymal Transition. J Clin Med 2022; 11:jcm11144210. [PMID: 35887973 PMCID: PMC9324325 DOI: 10.3390/jcm11144210] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 07/18/2022] [Accepted: 07/18/2022] [Indexed: 01/06/2023] Open
Abstract
Pleomorphic adenoma (PA) is a localized tumor that presents pleomorphic or mixed characteristics of epithelial origin and is interwoven with mucoid tissue, myxoid tissue, and chondroid masses. The literature reported that PA most often occurs in adults aged 30–60 years and is a female predilection; the exact etiology remains unclear. Epithelial–mesenchymal transition (EMT) is the transdifferentiation of stationary epithelial cells primarily activated by a core set of transcription factors (EMT-TFs) involved in DNA repair and offers advantages under various stress conditions. Data have suggested that EMTs represent the basic principle of tissue heterogeneity in PAs, demonstrating the potential of adult epithelial cells to transdifferentiate into mesenchymal cells. It has also been reported that multiple TFs, such as TWIST and SLUG, are involved in EMT in PA and that SLUG could play an essential role in the transition from myoepithelial to mesenchymal cells. Given this background, this review aims to summarize and clarify the involvement of EMT in the development of PA, chondrocyte differentiation, and malignant transformation to contribute to the fundamental elucidation of the mechanisms underlying EMT.
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