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Li L, Liu P, Lv X, Yu T, Jin X, Wang R, Xie X, Wang Q, Liu Y, Saiyin W. Ablation of FAM20C caused short root defects via suppressing the BMP signaling pathway in mice. J Orofac Orthop 2023; 84:349-361. [PMID: 35316352 DOI: 10.1007/s00056-022-00386-7] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 01/16/2022] [Indexed: 10/18/2022]
Abstract
Short root defects are prone to cause various periodontal diseases and lead to tooth loss in some serious cases. Studies about the mechanisms governing the development of the root are needed for a better understanding of the pathogenesis of short root defects. The protein family with sequence similarity 20 group C (FAM20C) is a Golgi casein kinase that has been well studied in the development of tooth crown formation. However, whether FAM20C plays a role in the development of tooth root is still unknown. Thus, we generated Sox2-Cre;Fam20cfl/fl (cKO) mice, in which Fam20c was ablated in both the dental epithelium and dental mesenchyme, and found that the cKO mice showed severe short root defects mainly by inhibiting the development of dental mesenchyme in the root region. In this investigation, we found morphological changes and differentiation defects, with reduced expression of dentin sialophosphoprotein (DSPP) in odontoblasts of the root region in cKO mice. Furthermore, the proliferation rate of apical papillary cells was reduced in the root of cKO mice. In addition, the levels of bone morphogenetic protein 4 (BMP4) and phospho-Smad1/5/8, and that of Osterix and Krüppel-like factor 4 (KLF4), two downstream target molecules of the BMP signaling pathway, were significantly reduced in the root of cKO mice. These results indicate that FAM20C plays an essential role in the development of the root by regulating the BMP signaling pathway.
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Affiliation(s)
- Lili Li
- Department of Stomatology, The First Affiliated Hospital of Harbin Medical University, 23 Youzheng Road, Nangang, 150086, Harbin, Heilongjiang, China
| | - Peihong Liu
- Department of Stomatology, The First Affiliated Hospital of Harbin Medical University, 23 Youzheng Road, Nangang, 150086, Harbin, Heilongjiang, China
| | - Xuechao Lv
- Department of Stomatology, The First Affiliated Hospital of Harbin Medical University, 23 Youzheng Road, Nangang, 150086, Harbin, Heilongjiang, China
| | - Tianliang Yu
- Department of Stomatology, The First Affiliated Hospital of Harbin Medical University, 23 Youzheng Road, Nangang, 150086, Harbin, Heilongjiang, China
| | - Xingai Jin
- Department of Stomatology, The First Affiliated Hospital of Harbin Medical University, 23 Youzheng Road, Nangang, 150086, Harbin, Heilongjiang, China
| | - Rui Wang
- Department of Stomatology, The First Affiliated Hospital of Harbin Medical University, 23 Youzheng Road, Nangang, 150086, Harbin, Heilongjiang, China
| | - Xiaohua Xie
- Institute of Hard Tissue Development and Regeneration, The Second Affiliated Hospital of Harbin Medical University, 150001, Harbin, Heilongjiang, China
| | - Qingshan Wang
- Department of Vascular Surgery, The Heilongjiang Provincial Hospital, 82 Zhongshan Road, Xiangfang, 150036, Harbin, Heilongjiang, China
| | - Yingqun Liu
- Department of Stomatology, The First Affiliated Hospital of Harbin Medical University, 23 Youzheng Road, Nangang, 150086, Harbin, Heilongjiang, China
| | - Wuliji Saiyin
- Department of Stomatology, The First Affiliated Hospital of Harbin Medical University, 23 Youzheng Road, Nangang, 150086, Harbin, Heilongjiang, China.
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Liu P, Li J, Tang L, Cong W, Jin H, Zhang H, Cui B, Yang S, Xiao J, Liu C, Saiyin W. Mutations of family with sequence similarity 20-member C gene causing lethal and nonlethal Raine syndrome causes hypophosphatemia rickets. J Cell Physiol 2023; 238:2556-2569. [PMID: 37698039 DOI: 10.1002/jcp.31105] [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: 03/23/2023] [Revised: 08/01/2023] [Accepted: 08/07/2023] [Indexed: 09/13/2023]
Abstract
Family with sequence similarity 20-member C (FAM20C) is a kinase specific to most of the secreted phosphoproteome. FAM20C has been identified as the causative gene of Raine syndrome, initially characterized by lethal osteosclerosis bone dysplasia. However, since the identification of the cases of nonlethal Raine syndrome characterized by hypophosphatemia rickets, the previous definition of Raine syndrome has become debatable and raised a question about the role of mutations of FAM20C in controversial skeletal manifestation in the two forms of the disease. In this study, we aimed to investigate the influence of FAM20C mutations on skeletogenesis. We developed transgenic mice expressing Fam20c mutations mimicking those associated with human lethal and nonlethal Raine syndrome. The results revealed that transgenic mice expressing the mutant Fam20c found in the lethal (KO;G374R) and nonlethal (KO;D446N) Raine syndrome exhibited osteomalacia without osteosclerotic features. Additionally, both mutants significantly increased the expression of the Fgf23, indicating that Fam20c deficiency in skeletal compartments causes hypophosphatemia rickets. Furthermore, as FAM20C kinase activity catalyzes the phosphorylation of secreted proteomes other than those in the skeletal system, global FAM20C deficiency may trigger alterations in other systems resulting in osteosclerosis secondary to hypophosphatemia rickets. Together, the findings of this study suggest that FAM20C deficiency primarily causes hypophosphatemia rickets or osteomalacia; however, the heterogeneous skeletal manifestation in Raine syndrome was not determined solely by specific mutations of FAM20C. The findings also implicated that rickets or osteomalacia caused by FAM20C deficiency would deteriorate into osteosclerosis by the defects from other systems or environmental impacts.
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Affiliation(s)
- Peihong Liu
- Department of Stomatology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
- Laboratory of Longjiang Scholar, The First Affifiliated Hospital of Harbin Medical University, Harbin, China
| | - Jiaxuan Li
- Department of Stomatology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Linghao Tang
- Department of Otorhinolaryngology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Wei Cong
- Department of Oral Pathology, School of Stomatology, Dalian Medical University, Dalian, China
| | - Han Jin
- Heilongjiang Provincial Key Laboratory of Hard Tissue Development and Regeneration, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Hong Zhang
- Department of Stomatology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Bing Cui
- Department of Stomatology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Shan Yang
- Department of Stomatology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Jing Xiao
- Department of Oral Pathology, School of Stomatology, Dalian Medical University, Dalian, China
| | - Chao Liu
- Department of Oral Pathology, School of Stomatology, Dalian Medical University, Dalian, China
| | - Wuliji Saiyin
- Department of Stomatology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
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Liu M, Wang W, Piao S, Shen Y, Li Z, Ding W, Li J, Saiyin W. Relationship of biglycan and decorin expression with clinicopathological features and prognosis in patients with oral squamous cell carcinoma. J Oral Pathol Med 2023; 52:20-28. [PMID: 36308714 DOI: 10.1111/jop.13381] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 10/02/2022] [Accepted: 10/17/2022] [Indexed: 01/10/2023]
Abstract
OBJECTIVE This study focused on investigating relation between biglycan (BGN) and decorin (DCN) expression and prognostic outcome for oral squamous cell carcinoma (OSCC) cases. MATERIAL AND METHODS BGN and DCN mRNA and protein expression was detected by qRT-PCR and Western-blotting (WB) assays from 31 OSCC samples as well as healthy samples. This work harvested 101 paraffin-embedded OSCC together with 30 healthy samples, and conducted immunohistochemical (IHC) staining for assessing pathological changes. Association of DCN with BGN within OSCC was explored by Spearman's analysis. Survival rate was explored by Kaplan-Meier (KM) approach. Multivariate analysis was conducted by Cox regression. RESULTS WB and qRT-PCR results showed BGN up-regulation (p < 0.001, p < 0.0001) whereas DCN down-regulation (p < 0.0001, p < 0.0001) with fresh OSCC tissues; the expression of BGN and DCN associated with the OSCC histopathological grade. IHC results suggested elevated BGN level (p < 0.0001) whereas DCN down-regulation (p < 0.0001) with paraffin embedded OSCC tissues. The expression of BGN and DCN associated with histopathologic grades and tumor stage of OSCC. The result of Spearman's analysis demonstrated significant association between the expression of BGN and DCN in OSCC. Survival analysis revealed that patients with higher BGN/lower DCN level showed poor overall survival (OS) as well as tumor-specific survival (TSS). Multivariate analysis proved that BGN and DCN independently predicted the prognosis of OS and TSS. CONCLUSION BGN and DCN expression levels can be adopted for predicting OSCC prognostic outcome.
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Affiliation(s)
- Miaomiao Liu
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
| | - Wei Wang
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
| | - Songlin Piao
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
| | - Yuchen Shen
- Vascular Anomaly Center, Department of Interventional Therapy, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Zhengmiao Li
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
| | - Wentong Ding
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
| | - Jichen Li
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
| | - Wuliji Saiyin
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
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Shen Y, Sun C, Zhao B, Guo H, Li J, Xia Y, Liu M, Piao S, Saiyin W. miR-34c-5p mediates the cellular malignant behaviors of oral squamous cell carcinoma through targeted binding of TRIM29. Ann Transl Med 2021; 9:1537. [PMID: 34790743 PMCID: PMC8576676 DOI: 10.21037/atm-21-4679] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Accepted: 10/21/2021] [Indexed: 12/23/2022]
Abstract
Background This investigation examined the effects of the microRNA miR-34c-5p on the proliferation, migration, and invasion of oral squamous cell carcinoma (OSCC) and the mechanisms involved. Methods The Gene Expression Omnibus (GEO) database was used to filter the chips, and the GEO2R software (https://www.ncbi.nlm.nih.gov/geo/geo2r/) was used to analyze the microarray data (GSE28100 and GSE45238). Gene set enrichment analysis (GSEA) was used to study the relationship between the expression of miR-34c-5p and the distant metastasis and pathological grade of OSCC. The correlation between TRIM29 (tripartite motif containing 29) expression and the malignant clinical phenotype of OSCC was also examined. The mRNA and protein expression levels of miR-34c-5p and TRIM29 were measured by real time quantitative reverse transcription polymerase chain reaction (RT-qPCR) and Western blot analysis. The proliferation, migration, invasion and apoptosis of the human oral squamous carcinoma cell lines CAL-27 and Tca8113 was assessed by performing cell-counting kit-8 (CCK-8) assays, colony formation assays, transwell tests, wound scratch tests and flow cytometry. Luciferase reporter assays were used to predict the relationship between miR-34c-5p and TRIM29. A xenograft nude model was established and used to evaluate the effect of miR-34c-5p on tumor growth in female BALB/c mice. Results The expression of miR-34c-5p was significantly correlated with the proliferation, migration, and metastasis of OSCC. Overexpression of miR-34c-5p promoted the proliferation, migration, and invasion of CAL-27 and Tca8113 cells, and suppressed their apoptosis. Inversely, low expression of miR-34c-5p suppressed the proliferation, migration, and invasion of CAL-27 and Tca8113 cells, and promoted their apoptosis. Overexpression of miR-34c-5p promoted tumor growth in the xenograft nude mice model. The expression of TRIM29 was related to malignant clinical phenotype of OSCC. Overexpression of TRIM29 inhibited the proliferation, migration and invasion of CAL-27 and Tca8113 cell, and induced their apoptosis. TRIM29 knockout had just the opposite effect. Importantly, miR-34c-5p binds to TRIM29 and inhibited TRIM29 expression. Conclusions MiR-34c-5p regulates the proliferation, migration, invasion, and apoptosis of OSCC through targeted binding of TRIM29. This may represent a novel therapeutic target for the treatment of patients with OSCC.
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Affiliation(s)
- Yuchen Shen
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China.,School of Stomatology, Harbin Medical University, Harbin, China
| | - Changsheng Sun
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China.,School of Stomatology, Harbin Medical University, Harbin, China
| | - Bowen Zhao
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China.,School of Stomatology, Harbin Medical University, Harbin, China
| | - Haobing Guo
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China.,School of Stomatology, Harbin Medical University, Harbin, China
| | - Jianhao Li
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China.,School of Stomatology, Harbin Medical University, Harbin, China
| | - Yanyun Xia
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China.,School of Stomatology, Harbin Medical University, Harbin, China
| | - Miaomiao Liu
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China.,School of Stomatology, Harbin Medical University, Harbin, China
| | - Songlin Piao
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China.,School of Stomatology, Harbin Medical University, Harbin, China
| | - Wuliji Saiyin
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China.,School of Stomatology, Harbin Medical University, Harbin, China
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Liu J, Saiyin W, Xie X, Mao L, Li L. Ablation of Fam20c causes amelogenesis imperfecta via inhibiting Smad dependent BMP signaling pathway. Biol Direct 2020; 15:16. [PMID: 33028367 PMCID: PMC7539414 DOI: 10.1186/s13062-020-00270-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 04/11/2020] [Accepted: 09/16/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Amelogenesis imperfecta (AI) is a type of hereditary diseases that manifest defects in the formation or mineralization of enamel. Recently, it is reported that inactivation of FAM20C, a well-known Golgi casein kinase, caused AI. However, the mechanism of it is still unknown. The aim of this study was to explore the molecular mechanism of AI, which caused by ablation of FAM20C. RESULTS In the Sox2-Cre;Fam20Cfl/fl (cKO) mouse, we found abnormal differentiation of ameloblasts, improper formation and mineralization of enamel, and downregulation of both mRNA and protein level of enamel matrix proteins, including amelogenin (AMEL), ameloblastin (AMBN) and enamelin (ENAM). The levels of BMP2, BMP4 and BMP7, the ligands of BMP signaling pathway, and phosphorylation of Smad1/5/8, the key regulators of BMP signaling pathway, were all decreased in the enamel matrix and the ameloblast of the cKO mice, respectively. The expression of cyclin-dependent kinase inhibitor (P21), muscle segment homeobox genes 2 (Msx2), which are the target genes of the BMP signaling pathway, and laminin 3, the downstream factor of Msx2, were all significantly decreased in the ameloblasts of the cKO mice compared to the control mice. CONCLUSION the results of our study suggest that ablation of FAM20C leads to AI through inhibiting the Smad dependent BMP signaling pathway in the process of amelogenesis.
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Affiliation(s)
- Jing Liu
- Department of Stomatology, the 1st Affiliated Hospital of Harbin Medical University, 23 Youzheng Road, Nangang, Harbin, 150001, Heilongjiang, China
| | - Wuliji Saiyin
- Department of Stomatology, the 1st Affiliated Hospital of Harbin Medical University, 23 Youzheng Road, Nangang, Harbin, 150001, Heilongjiang, China
| | - Xiaohua Xie
- Institute of Hard Tissue Development and Regeneration, the 2nd Affiliated Hospital of Harbin Medical University, Harbin, 150086, Heilongjiang, China
| | - Limin Mao
- Department of Stomatology, the 1st Affiliated Hospital of Harbin Medical University, 23 Youzheng Road, Nangang, Harbin, 150001, Heilongjiang, China.
| | - Lili Li
- Department of Stomatology, the 1st Affiliated Hospital of Harbin Medical University, 23 Youzheng Road, Nangang, Harbin, 150001, Heilongjiang, China. .,Longjiang scholar laboratory, the 1st Affiliated Hospital of Harbin Medical University, 23 Youzheng Road, Nangang, Harbin, 150001, Heilongjiang, China.
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Shen Y, Zhang L, Piao S, Li L, Li J, Xia Y, Li J, Saiyin W. NUDT1: A potential independent predictor for the prognosis of patients with oral squamous cell carcinoma. J Oral Pathol Med 2019; 49:210-218. [PMID: 31732994 DOI: 10.1111/jop.12974] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 10/24/2019] [Accepted: 10/28/2019] [Indexed: 12/24/2022]
Affiliation(s)
- Yuchen Shen
- Department of Oral and Maxillofacial Surgery The First Affiliated Hospital of Harbin Medical University Harbin China
| | - Lei Zhang
- Department of Oral and Maxillofacial Surgery The First Affiliated Hospital of Harbin Medical University Harbin China
| | - Songlin Piao
- Department of Oral and Maxillofacial Surgery The First Affiliated Hospital of Harbin Medical University Harbin China
| | - Lili Li
- Department of Implant Dentistry The First Affiliated Hospital of Harbin Medical University Harbin China
| | - Jianhao Li
- Department of Oral and Maxillofacial Surgery The First Affiliated Hospital of Harbin Medical University Harbin China
| | - Yanyun Xia
- Department of Oral and Maxillofacial Surgery The First Affiliated Hospital of Harbin Medical University Harbin China
| | - Jichen Li
- Department of Oral and Maxillofacial Surgery The First Affiliated Hospital of Harbin Medical University Harbin China
| | - Wuliji Saiyin
- Department of Oral and Maxillofacial Surgery The First Affiliated Hospital of Harbin Medical University Harbin China
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Saiyin W, Li L, Zhang H, Lu Y, Qin C. Inactivation of FAM20B causes cell fate changes in annulus fibrosus of mouse intervertebral disc and disc defects via the alterations of TGF-β and MAPK signaling pathways. Biochim Biophys Acta Mol Basis Dis 2019; 1865:165555. [PMID: 31513834 PMCID: PMC7194007 DOI: 10.1016/j.bbadis.2019.165555] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [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: 05/30/2019] [Revised: 09/05/2019] [Accepted: 09/07/2019] [Indexed: 01/30/2023]
Abstract
Intervertebral disc (IVD) disorder is often caused by the defect of annulus fibrosus (AF), especially that of the outer AF. Studies about the mechanisms governing the development of the outer AF are needed for a better understanding of pathogenesis of IVD defects. Glycosaminoglycans (GAGs) are essential components of extracellular matrix (ECM) in AF. FAM20B is a newly identified xylose kinase that catalyzes the biosynthesis of GAGs. In this study, we created Fam20B conditional knockout (cKO) mice in which FAM20B was inactivated in type I collagen-expressing cells, the main type of cells in the outer AF of IVD. The cKO mice showed severe spine deformity and remarkable IVD defects associated with AF malformation. The AF of cKO mice had a lower level of chondroitin sulfate and heparan sulfate, and the outer AF cells lost their normal fibroblast-like morphology and acquired chondrocyte phenotypes, expressing a higher level of Sox 9 and type II collagen along with a reduced level of type I collagen. The level of phospho-Smad 2 and phospho-Smad 3, and that of scleraxis, a downstream target molecule of canonical TGF-β signaling pathway were significantly lower in the AF of cKO mice. The AF in cKO mice also manifested altered levels in the molecules associated with the activations of MAPK pathway; the changes included the increase of phospho-P38 and phospho-ERK and a decrease of phospho-JNK. These results indicate that FAM20B plays an essential role in the development of AF by regulating the TGF-β signaling and MAPK signaling pathways.
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Affiliation(s)
- Wuliji Saiyin
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, TX 75246, USA
| | - Lili Li
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, TX 75246, USA
| | - Hua Zhang
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, TX 75246, USA
| | - Yongbo Lu
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, TX 75246, USA
| | - Chunlin Qin
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, TX 75246, USA.
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Li L, Saiyin W, Zhang H, Wang S, Xu Q, Qin C, Lu Y. FAM20A is essential for amelogenesis, but is dispensable for dentinogenesis. J Mol Histol 2019; 50:581-591. [PMID: 31667691 DOI: 10.1007/s10735-019-09851-x] [Citation(s) in RCA: 10] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 10/24/2019] [Indexed: 01/10/2023]
Abstract
Mutations in the gene encoding family with sequence similarity 20, member A (FAM20A) caused amelogenesis imperfecta (AI), in humans. However, the roles of FAM20A in amelogenesis and dentinogenesis are poorly understood. In this study, we generated a Fam20a knockout (Sox2-Cre;Fam20afl/fl) mouse model by crossing Fam20afl/fl mice with Sox2-Cre transgenic mice, in which Fam20a was ablated in both dental epithelium and dental mesenchyme. We found that these mice developed an enamel phenotype that resembles human AI associated with FAM20A mutations, but did not have apparent dentin defects. The secretory stage ameloblasts in the mandibular incisors from the Sox2-Cre;Fam20afl/fl mice were shorter and detached from the enamel matrix, and subsequently lost their polarity, became disorganized and formed numerous spherical extracellular matrices in place of normal enamel. At the molecular level, the Sox2-Cre;Fam20afl/fl mice displayed dramatically reduced expression levels of the genes encoding the enamel matrix proteins, but unaltered levels of the genes encoding the dentin matrix proteins. Moreover, Fam20a ablation resulted in a great decrease in FAM20C protein level, but it did not alter the intracellular localization of FAM20C protein in ameloblasts and odontoblasts. These results indicate that FAM20A is essential for amelogenesis, but is dispensable for dentinogenesis.
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Affiliation(s)
- Lili Li
- Department of Biomedical Sciences and Center for Craniofacial Research and Diagnosis, Texas A&M University College of Dentistry, 3302 Gaston Ave. Room 436, Dallas, TX, 75246, USA
| | - Wuliji Saiyin
- Department of Biomedical Sciences and Center for Craniofacial Research and Diagnosis, Texas A&M University College of Dentistry, 3302 Gaston Ave. Room 436, Dallas, TX, 75246, USA
| | - Hua Zhang
- Department of Biomedical Sciences and Center for Craniofacial Research and Diagnosis, Texas A&M University College of Dentistry, 3302 Gaston Ave. Room 436, Dallas, TX, 75246, USA
| | - Suzhen Wang
- Department of Biomedical Sciences and Center for Craniofacial Research and Diagnosis, Texas A&M University College of Dentistry, 3302 Gaston Ave. Room 436, Dallas, TX, 75246, USA
| | - Qian Xu
- Department of Biomedical Sciences and Center for Craniofacial Research and Diagnosis, Texas A&M University College of Dentistry, 3302 Gaston Ave. Room 436, Dallas, TX, 75246, USA
| | - Chunlin Qin
- Department of Biomedical Sciences and Center for Craniofacial Research and Diagnosis, Texas A&M University College of Dentistry, 3302 Gaston Ave. Room 436, Dallas, TX, 75246, USA
| | - Yongbo Lu
- Department of Biomedical Sciences and Center for Craniofacial Research and Diagnosis, Texas A&M University College of Dentistry, 3302 Gaston Ave. Room 436, Dallas, TX, 75246, USA.
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Li J, Yang D, Wang W, Piao S, Zhou J, Saiyin W, Zheng C, Sun H, Li Y. Inhibition of autophagy by 3-MA enhances IL-24-induced apoptosis in human oral squamous cell carcinoma cells. J Exp Clin Cancer Res 2015; 34:97. [PMID: 26361755 PMCID: PMC4567787 DOI: 10.1186/s13046-015-0211-0] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Accepted: 08/25/2015] [Indexed: 12/21/2022]
Abstract
Background Interleukin-24(IL-24), also referred to as melanoma differentiation-associated gene-7(mda-7), is a unique member of the IL-10 gene family, which displays nearly ubiquitous cancer-specific toxicity. The most notable feature of IL-24 is selectively induced growth suppression and apoptosis in various cancer cells, with no harmful effects toward normal cells. Autophagy is a self-protective mechanism in many kinds of tumor cells that respond to anticancer treatment. It is reported that autophagy inhibition could enhance the effects of many kinds of anticancer treatments, including gene therapy. However, whether IL-24 is effective to treat oral squamous cell carcinomas (OSCC) and if autophagy inhibition could improve the anticancer effect of IL-24 towards OSCC is has not been detected. Methods MTT assays were carried out to determine the cell proliferation; Transfection was used to gene transfer; Western Blot was performed to detect the protein level of LC3II, P62, Beclin 1, Cleaved caspase-3, β-Tubulin and β-actin; Apoptosis rates and cell cycle alteration were analyzed using flow cytometry; Autophagy induction was confirmed by MDC staining, GFP-LC3 staining and transmission electron microscopy. Amount of IL-24 in the culture medium was quantified by ELISA. Apoptosis in vivo was analyzed by TUNEL assay. HE staining was used to observe the morphology of the samples. Results In the present study, we proved that IL-24 have a novel anticancer effect towards KB cells and that autophagy inhibition could improve the anticancer effect of IL-24. IL-24 treated cells showed autophagy characteristics and autophagy inhibition by 3-methyladenine (3-MA) significantly enhanced IL-24-induced apoptosis. Similar results were obtained in the KB cells xenograft tumor model. Conclusions These results suggest that the combination of autophagy inhibitors and IL-24 based on the AdLTR2EF1α-mediated gene transfer could be a promising way to cure OSCC.
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Affiliation(s)
- Jichen Li
- School of Life Science and Technology, Harbin Institute of Technology, 2 Yikuang Street, Harbin, 150001, People's Republic of China.
| | - Dezhao Yang
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Harbin Medical University, 141 Yiman Street, Nangang District, Harbin, 150001, People's Republic of China.
| | - Wei Wang
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Harbin Medical University, 141 Yiman Street, Nangang District, Harbin, 150001, People's Republic of China.
| | - Songlin Piao
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Harbin Medical University, 141 Yiman Street, Nangang District, Harbin, 150001, People's Republic of China.
| | - Jianyu Zhou
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Harbin Medical University, 141 Yiman Street, Nangang District, Harbin, 150001, People's Republic of China.
| | - Wuliji Saiyin
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Harbin Medical University, 141 Yiman Street, Nangang District, Harbin, 150001, People's Republic of China.
| | - Changyu Zheng
- National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA.
| | - Hongchen Sun
- Department of Oral Pathology, School of Stomatology, Jilin University, 1500 Qinghua Road, Changchun, 130021, People's Republic of China.
| | - Yu Li
- School of Life Science and Technology, Harbin Institute of Technology, 2 Yikuang Street, Harbin, 150001, People's Republic of China.
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Saiyin W, Wang D, Li L, Zhu L, Liu B, Sheng L, Li Y, Zhu B, Mao L, Li G, Zhu X. Sequential release of autophagy inhibitor and chemotherapeutic drug with polymeric delivery system for oral squamous cell carcinoma therapy. Mol Pharm 2014; 11:1662-75. [PMID: 24666011 DOI: 10.1021/mp5000423] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Autophagy inhibition is emerging as a new paradigm for efficient cancer therapy by overcoming multidrug resistance (MDR). Here, we developed an effective chemotherapeutic system for oral squamous cell carcinoma (OSCC) based on polymeric nanomicelles for codelivery of the anticancer drug doxorubicin (DOX) and the autophagy inhibitor LY294002 (LY). The hydrophobic DOX was conjugated onto a hydrophilic and pH-responsive hyperbranched polyacylhydrazone (HPAH), forming the DOX-conjugated HPAH (HPAH-DOX). Due to its amphiphilicity, HPAH-DOX self-assembled into nanomicelles in an aqueous solution and the autophagy inhibitor LY could be loaded into the HPAH-DOX micelles. The release of DOX and LY from the LY-loaded HPAH-DOX micelles was pH-dependent, whereas LY was released significantly faster than DOX at a mildly acidic condition. The in vitro evaluation demonstrated that the LY-loaded HPAH-DOX micelles could rapidly enter cancer cells and then release LY and DOX in response to an intracellular acidic environment. Compared to the HPAH-DOX micelles and the physical mixture of HPAH-DOX and LY, the LY-loaded HPAH-DOX micelles induced a higher proliferation inhibition of tumor cells, illustrating a synergistic effect of LY and DOX. The preferentially released LY inhibited the autophagy of tumor cells and made them more sensitive to the subsequent liberation of DOX. The polymeric codelivery system for programmable release of the chemotherapy drug and the autophagy inhibitor provides a new platform for combination of traditional chemotherapy and autophagy inhibition.
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Affiliation(s)
- Wuliji Saiyin
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Harbin Medical University , 141 Yiman Street, Nangang District, Harbin 150001, People's Republic of China
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