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Zhang L, Ren H, Wu Y, Xue L, Bai Y, Wei D, Wu Q. PRG4 represses the genesis and metastasis of osteosarcoma by inhibiting PDL1 expression. Tissue Cell 2024; 88:102409. [PMID: 38781792 DOI: 10.1016/j.tice.2024.102409] [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: 01/08/2024] [Revised: 04/27/2024] [Accepted: 05/13/2024] [Indexed: 05/25/2024]
Abstract
BACKGROUND Osteosarcoma is originated from skeletal system. Recombinant human proteoglycan 4 (rhPRG4) can inhibit cell proliferation and migration in multiple cancers. This research is designed to dig out the role and mechanism of PRG4 in osteosarcoma. METHODS Human osteosarcoma cell lines, MG63 and 143B, were transfected with programmed death 1 (PD-L1) overexpression vectors and/or treated with 20, 50, and 100 μg/mL rhPRG4, followed by the determination of cell viability, colony formation, sphere formation, invasion, migration, apoptosis, and the expressions of matrix metalloproteinases (MMPs), PD-L1 and apoptosis-related proteins. Tumor-bearing mouse models were constructed by injection of 143B cells and treatment of anti-PD-L1 antibody and/or adenovirus PRG4 (AdPRG4). Tumor volume was monitored, and immunohistochemical location of Ki67 was performed. Expressions of MMPs, transforming growth factor-β (TGF-β), PD-L1, and epithelial mesenchymal transition (EMT)-related proteins were measured in tumors. RESULTS RhPRG4 (20, 50, and 100 μg/mL) inhibited the viability, colony formation, sphere formation, invasion, migration, and the expressions of MMP2, MMP9 and Bcl2 in osteosarcoma cells, while promoting cell apoptosis as well as Bax and c-caspase3 expressions, at a dose-dependent manner; by contrast, PD-L1 overexpression reversed the above effects of 100 μg/mL rhPRG4. AdPRG4 or anti-PD-L1 antibody decreased tumor volume, number of pulmonary metastasis nodule, Ki67 location, and expressions of TGF-β, PD-L1, MMP2, MMP9, Vimentin, and Snail, but increased E-cadherin expression in tumor cells. Moreover, anti-PD-L1 antibody and AdPRG4 together functioned more effectively than them alone in reducing tumor burden. CONCLUSION PRG4 represses the genesis and metastasis of osteosarcoma via inhibiting PD-L1 expression, and AdPRG4 enhances the effectiveness of anti-PD-L1 therapy.
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Affiliation(s)
- Lei Zhang
- Department of Oncology, Second Hospital of Shanxi Medical University, China
| | - Hongwei Ren
- Department of Oncology, Second Hospital of Shanxi Medical University, China
| | - Yanjuan Wu
- Department of Cardiothoracic surgery, Second Hospital of Shanxi Medical University, China
| | - Lili Xue
- Department of Oncology, Second Hospital of Shanxi Medical University, China
| | - Yang Bai
- Department of Oncology, Second Hospital of Shanxi Medical University, China
| | - Dong Wei
- Department of Oncology, Second Hospital of Shanxi Medical University, China
| | - Qilong Wu
- Department of Oncology, Second Hospital of Shanxi Medical University, China.
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Yang Y, Yan X, Chen Y, Liu J, Xue J, Sheng X, Qin J, Xue Q, Liu X. Silencing FUT4 Inhibits the Progression of Osteosarcoma through Activation of FOXO1. Curr Pharm Des 2024; 30:440-447. [PMID: 38343056 PMCID: PMC11071653 DOI: 10.2174/0113816128269432240103052108] [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: 06/28/2023] [Revised: 11/22/2023] [Accepted: 11/29/2023] [Indexed: 05/08/2024]
Abstract
BACKGROUND It has been reported that inhibition of Fucosyltransferase4 (FUT4) to activate Forkhead box O1 (FOXO1) can lead to apoptosis of cancer cells, however, the mechanism in osteosarcoma is still unclear. OBJECTIVE To explore the biological significance of the connection between FUT4 and FOXO1 in osteosarcoma growth. METHODS In vitro tests were conducted using the human osteoblast cell line and the osteosarcoma cell lines. QRT-PCR assay as well as western blot assay were used to ascertain the relative expression levels of FUT4 and FOXO1 in the cells. By using the CCK-8 assay, colony assay, EDU assay, wound healing assay and Transwell assay, osteosarcoma cells' ability to proliferate, migrate and invade were examined in relation to si- FUT4. TUNEL test was used to evaluate Si-impact FUT4's on KHOS and U2OS apoptosis in osteosarcoma cells. Western blot assay was used to identify the expression of proliferative, migrating and apoptosis-related protein markers in osteosarcoma cells KHOS and U2OS and the expression of important proteins in the Wnt/ β-catenin signaling pathway. RESULTS In comparison with osteoblasts, osteosarcoma cells expressed more FUT4. The osteosarcoma cells' capacities to proliferate, invade, and migrate were markedly inhibited by the inhibition of FUT4 expression, which also increased osteosarcoma cell apoptosis. The Wnt/β-catenin signaling pathway was blocked by upregulating FOXO1 expression, which was in turn inhibited by inhibiting FUT4 expression. CONCLUSION Osteosarcoma cells express more FUT4. The Wnt/β-catenin signaling pathway has a significant effect on osteosarcoma cell death, and inhibition of FUT4 expression may target FOXO1 activation to decrease osteosarcoma cells' ability to proliferate, invade, and migrate.
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Affiliation(s)
- Yang Yang
- Department of Trauma Center, Affiliated Hospital of Nantong University, Nantong City, Jiangsu Province 226001, China
| | - Xiaodi Yan
- Department of Radiation Oncology, Affiliated Hospital of Nantong University, Nantong City, Jiangsu Province 226001, China
| | - YueYuan Chen
- Department of Oncology, Second People’s Hospital of Nantong & Affiliated Nantong Rehabilitation Hospital of Nantong University, Nantong City, Jiangsu Province 226001, China
| | - Jiajia Liu
- Department of Trauma Center, Affiliated Hospital of Nantong University, Nantong City, Jiangsu Province 226001, China
| | - Jianhua Xue
- Department of Trauma Center, Affiliated Hospital of Nantong University, Nantong City, Jiangsu Province 226001, China
| | - Xiaoming Sheng
- Department of Trauma Center, Affiliated Hospital of Nantong University, Nantong City, Jiangsu Province 226001, China
| | - Jun Qin
- Department of Trauma Center, Affiliated Hospital of Nantong University, Nantong City, Jiangsu Province 226001, China
| | - Qiang Xue
- Department of Radiation Oncology, Affiliated Hospital of Nantong University, Nantong City, Jiangsu Province 226001, China
| | - Xianchen Liu
- Department of Radiation Oncology, Affiliated Hospital of Nantong University, Nantong City, Jiangsu Province 226001, China
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Fan L, Zhong Z, Lin Y, Li J. Non-coding RNAs as potential biomarkers in osteosarcoma. Front Genet 2022; 13:1028477. [PMID: 36338952 PMCID: PMC9627036 DOI: 10.3389/fgene.2022.1028477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 10/07/2022] [Indexed: 11/24/2022] Open
Abstract
Osteosarcoma (OS) is a primary solid malignant tumor that occurs most frequently in the metaphysis of long bones. More likely to happen to children and adolescents. OS has high mortality and disability rate. However, the etiology and pathogenesis of OS have not been fully understood till now. Due to the lack of effective biomarkers, OS cannot be precisely detected in the early stage. With the application of next-generation and high-throughput sequencing, more and more abnormally expressed non-coding RNAs(ncRNAs) have been identified in OS. Growing evidences have suggested the ncRNAs, such as microRNAs (miRNAs), long non-coding RNAs (lncRNAs), circular RNAs (circRNAs), have played an important role in the tumorigenesis and progression of OS. Thus, they can be served as novel biomarkers for diagnosis, treatment and prognosis. This review summarized the application of ncRNA as biomarkers in OS in detail, and discussed the limitation and future improvement of the potential biomarkers.
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Affiliation(s)
- Lijuan Fan
- Henan Luoyang Orthopedic Hospital (Henan Provincial Orthopedic Hospital), Zhengzhou, Henan, China
- Luoyang Postgraduate Training Department, Henan University of Chinese Medicine, Zhengzhou, Henan, China
| | - Zhenhao Zhong
- Department of Spinal Surgery, The First Affiliated Hospital of Hainan Medical University, Haikou, Hainan, China
| | - Yubo Lin
- School of Clinical Medicine, Guilin Medical University, Guilin, Guangxi, China
| | - Jitian Li
- Henan Luoyang Orthopedic Hospital (Henan Provincial Orthopedic Hospital), Zhengzhou, Henan, China
- Luoyang Postgraduate Training Department, Henan University of Chinese Medicine, Zhengzhou, Henan, China
- The First College for Clinical Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
- *Correspondence: Jitian Li,
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Liu X, Geng Z, Ding X, Lou Y, Zhang X. Convallatoxin suppresses osteosarcoma cell proliferation, migration, invasion, and enhances osteogenic differentiation by downregulating parathyroid hormone receptor 1 (PTHR1) expression and inactivating Wnt/β-catenin pathway. Bioengineered 2022; 13:13280-13292. [PMID: 35635031 PMCID: PMC9275893 DOI: 10.1080/21655979.2022.2080363] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Osteosarcoma (OS) is the most common primary malignant bone tumor in children and adolescents. Convallatoxin, a natural cardiac glycoside, exhibits potent anti-tumor activities. Literature has confirmed that PTHR1 is highly expressed in OS tissues and cells and downregulation of PTHR1 could decrease the invasion and growth of OS cells and increase tumor differentiation. In addition, PTHR1 could activate Wnt signaling pathway to promote the malignant functions of OS. In the present study, MG63 and U2OS cells were treated with 0, 12.5, 25, and 50 nM convallatoxin in order to elucidate the precise function of convallatox on the malignant behaviors of OS cells. Moreover, MG63 and U2OS cells treated with convallatoxin were transfected with Ov-PTHR1 or sh-DKK1, aiming to explore whether convallatoxin impeded the malignant progression of OS by modulating PTHR1 and Wnt/β-catenin pathway. CCK-8, wound healing and transwell assays were employed to assess the proliferation, migration, and invasion of OS cells. Differentiation markers (collagen 1, osteopontin, RANKL, Runx2, osteocalcin) were measured to evaluate OS cell differentiation. Results illuminated that convallatoxin suppressed proliferation, migration, and invasion as well as promoted osteogenic differentiation of OS cells. Besides, convallatoxin inhibited PTHR1 expression and inactivated Wnt/β-catenin pathway and PTHR1 overexpression activated Wnt/β-catenin pathway. Furthermore, PTHR1 overexpression or DKK1 knockdown reversed the suppressing effects of convallatoxin on OS cell proliferation, migration, and invasion, as well as the enhancing effect of convallatoxin on OS cell osteogenic differentiation. Collectively, convallatoxin may repress the malignant progression of OS by blocking PTHR1 and Wnt/β-catenin pathway.
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Affiliation(s)
- Xin Liu
- Department of Orthopaedics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Ze Geng
- Department of Orthopaedics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Xiangyong Ding
- Department of Orthopaedics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Yan Lou
- Department of Orthopaedics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Xingquan Zhang
- Department of Orthopaedics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
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Gao Y, Li Y, Niu Y, Ju H, Chen R, Li B, Song X, Song L. Chemical Characterization, Antitumor, and Immune-Enhancing Activities of Polysaccharide from Sargassum pallidum. Molecules 2021; 26:7559. [PMID: 34946640 PMCID: PMC8709291 DOI: 10.3390/molecules26247559] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 12/08/2021] [Accepted: 12/10/2021] [Indexed: 12/24/2022] Open
Abstract
Searching for natural products with antitumor and immune-enhancing activities is an important aspect of cancer research. Sargassum pallidum is an edible brown alga that has been used in Chinese traditional medicine for the treatment of tumors. However, the purification and application of its active components are still insufficient. In the present study, the polysaccharides from S. pallidum (SPPs) with antitumor and immune-enhancing activities were isolated and purified, and five polysaccharide fractions (SPP-0.3, SPP-0.5, SPP-0.7, SPP-1, and SPP-2) were obtained. The ratio of total saccharides, monosaccharide composition, and sulfated contents was determined, and their structures were analyzed by Fourier transform infrared spectroscopy. Moreover, bioactivity analysis showed that all five fractions had significant antitumor activity against three types of cancer cells (A549, HepG2, and B16), and can induce cancer cell apoptosis. In addition, the results indicated that SPPs can enhance the proliferation of immune cells and improve the expression levels of serum cytokines (IL-6, IL-1β, iNOS, and TNF-α). SPP-0.7 was identified as the most active fraction and selected for further purification, and its physicochemical properties and antitumor mechanism were further analyzed. Transcriptome sequencing result showed that SPP-0.7 can significantly induce the cell apoptosis, cytokine secretion, and cellular stress response process, and inhibit the normal physiological processes of cancer cells. Overall, SPPs and SPP-0.7 may be suitable for use as potential candidate agents for cancer therapy.
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Affiliation(s)
- Yi Gao
- College of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China; (Y.G.); (B.L.)
| | - Yizhen Li
- College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, China; (Y.L.); (Y.N.); (H.J.); (R.C.)
| | - Yunze Niu
- College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, China; (Y.L.); (Y.N.); (H.J.); (R.C.)
| | - Hao Ju
- College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, China; (Y.L.); (Y.N.); (H.J.); (R.C.)
| | - Ran Chen
- College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, China; (Y.L.); (Y.N.); (H.J.); (R.C.)
| | - Bin Li
- College of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China; (Y.G.); (B.L.)
| | - Xiyun Song
- College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China;
| | - Lin Song
- College of Marine Science and Biological Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
- Shandong Provincial Key Laboratory of Biochemical Engineering, Qingdao 266042, China
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