1
|
Neupane S, Aryal YP, Kwak HJ, Lee SG, Kim TY, Pokharel E, Kim JY, Kim JH, Sohn WJ, An SY, An CH, Jung JK, Ha JH, Yamamoto H, Cho SW, Lee S, Lee Y, Park KK, Min BK, Park C, Kwon TY, Cho SJ, Kim JY. Developmental roles of glomerular epithelial protein-1 in mice molar morphogenesis. Cell Tissue Res 2024; 395:53-62. [PMID: 37985496 DOI: 10.1007/s00441-023-03841-y] [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: 06/28/2022] [Accepted: 10/27/2023] [Indexed: 11/22/2023]
Abstract
Glomerular epithelial protein-1 (Glepp1), a R3 subtype family of receptor-type protein tyrosine phosphatases, plays important role in the activation of Src family kinases and regulates cellular processes such as cell proliferation, differentiation, and apoptosis. In this study, we firstly examined the functional evaluation of Glepp1 in tooth development and morphogenesis. The precise expression level and developmental function of Glepp1 were examined by RT-qPCR, in situ hybridization, and loss and gain of functional study using a range of in vitro organ cultivation methods. Expression of Glepp1 was detected in the developing tooth germs in cap and bell stage of tooth development. Knocking down Glepp1 at E13 for 2 days showed the altered expression levels of tooth development-related signaling molecules, including Bmps, Dspp, Fgf4, Lef1, and Shh. Moreover, transient knock down of Glepp1 revealed alterations in cellular physiology, examined by the localization patterns of Ki67 and E-cadherin. Similarly, knocking down of Glepp1 showed disrupted enamel rod and interrod formation in 3-week renal transplanted teeth. In addition, due to attrition of odontoblastic layers, the expression signals of Dspp and the localization of NESTIN were almost not detected after knock down of Glepp1; however, their expressions were increased after Glepp1 overexpression. Thus, our results suggested that Glepp1 plays modulating roles during odontogenesis by regulating the expression levels of signaling molecules and cellular events to achieve the proper structural formation of hard tissue matrices in mice molar development.
Collapse
Affiliation(s)
- Sanjiv Neupane
- Department of Biochemistry, School of Dentistry, Kyungpook National University, Daegu, Korea
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, USA
| | - Yam Prasad Aryal
- Department of Biochemistry, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Hee-Jin Kwak
- School of Biological Sciences, College of Natural Sciences, Chungbuk National University, Cheongju, Korea
| | - Sung-Gwon Lee
- School of Biological Sciences and Technology, Chonnam National University, Gwangju, Korea
| | - Tae-Young Kim
- Department of Biochemistry, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Elina Pokharel
- Department of Biochemistry, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Ji-Youn Kim
- Department of Dental Hygiene, Gachon University, Incheon, Korea
| | - Jung-Hyeuk Kim
- School of Biological Sciences, College of Natural Sciences, Chungbuk National University, Cheongju, Korea
| | - Wern-Joo Sohn
- Pre-Major of Cosmetics and Pharmaceutics, Daegu Haany University, Gyeongsan, Korea
| | - Seo-Young An
- Department of Oral and Maxillofacial Radiology, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Chang-Hyeon An
- Department of Oral and Maxillofacial Radiology, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Jae-Kwang Jung
- Department of Oral Medicine, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Jung-Hong Ha
- Department of Conservative Dentistry, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Hitoshi Yamamoto
- Department of Histology and Developmental Biology, Tokyo Dental College, Tokyo, Japan
| | - Sung-Won Cho
- Division of Anatomy and Developmental Biology, Department of Oral Biology, Yonsei University College of Dentistry, Seoul, Korea
| | - Sanggyu Lee
- School of Life Science, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu, Korea
| | - Youngkyun Lee
- Department of Biochemistry, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Kwang-Kyun Park
- Professor Emeritus Department of Oral Biology, Yonsei University College of Dentistry, Seoul, Korea
| | - Bong-Ki Min
- Center for Research Facilities, Yeungnam University, Gyeongsan, Korea
| | - Chungoo Park
- School of Biological Sciences and Technology, Chonnam National University, Gwangju, Korea
| | - Tae-Yub Kwon
- Department of Dental Biomaterials, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Sung-Jin Cho
- School of Biological Sciences, College of Natural Sciences, Chungbuk National University, Cheongju, Korea.
| | - Jae-Young Kim
- Department of Biochemistry, School of Dentistry, Kyungpook National University, Daegu, Korea.
| |
Collapse
|
2
|
Developmental function of Piezo1 in mouse submandibular gland morphogenesis. Histochem Cell Biol 2023:10.1007/s00418-023-02181-w. [PMID: 36814002 DOI: 10.1007/s00418-023-02181-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/06/2023] [Indexed: 02/24/2023]
Abstract
Mechanically activated factors are important in organogenesis, especially in the formation of secretory organs, such as salivary glands. Piezo-type mechanosensitive ion channel component 1 (Piezo1), although previously studied as a physical modulator of the mechanotransduction, was firstly evaluated on its developmental function in this study. The detailed localization and expression pattern of Piezo1 during mouse submandibular gland (SMG) development were analyzed using immunohistochemistry and RT-qPCR, respectively. The specific expression pattern of Piezo1 was examined in acinar-forming epithelial cells at embryonic day 14 (E14) and E16, which are important developmental stages for acinar cell differentiation. To understand the precise function of Piezo1 in SMG development, siRNA against Piezo1 (siPiezo1) was employed as a loss-of-function approach, during in vitro organ cultivation of SMG at E14 for the designated period. Alterations in the histomorphology and expression patterns of related signaling molecules, including Bmp2, Fgf4, Fgf10, Gli1, Gli3, Ptch1, Shh, and Tgfβ-3, were examined in acinar-forming cells after 1 and 2 days of cultivation. Particularly, altered localization patterns of differentiation-related signaling molecules including Aquaporin5, E-cadherin, Vimentin, and cytokeratins would suggest that Piezo1 modulates the early differentiation of acinar cells in SMGs by modulating the Shh signaling pathway.
Collapse
|
3
|
Neupane S, Aryal YP, Kim TY, Yeon CY, An CH, Kim JY, Yamamoto H, Lee Y, Sohn WJ, Kim JY. Signaling Modulations of miR-206-3p in Tooth Morphogenesis. Int J Mol Sci 2020; 21:E5251. [PMID: 32722078 PMCID: PMC7432545 DOI: 10.3390/ijms21155251] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 07/22/2020] [Accepted: 07/22/2020] [Indexed: 01/06/2023] Open
Abstract
MicroRNAs (miRNAs) are a class of naturally occurring small non-coding RNAs that post-transcriptionally regulate gene expression in organisms. Most mammalian miRNAs influence biological processes, including developmental changes, tissue morphogenesis and the maintenance of tissue identity, cell growth, differentiation, apoptosis, and metabolism. The miR-206-3p has been correlated with cancer; however, developmental roles of this miRNA are unclear. In this study, we examined the expression pattern and evaluated the developmental regulation of miR-206-3p during tooth morphogenesis using ex-vivo culture method. The expression pattern of miR-206-3p was examined in the epithelium and mesenchyme of developing tooth germ with stage-specific manners. Perturbation of the expression of miR-206-3p clearly altered expression patterns of dental-development-related signaling molecules, including Axin2, Bmp2, Fgf4, Lef1 and Shh. The gene expression complemented with change in cellular events including, apoptosis and proliferation which caused altered crown and pulp morphogenesis in renal-capsule-calcified teeth. Especially, mislocalization of β-Catenin and SMAD1/5/8 were observed alongside dramatic alterations in the expression patterns of Fgf4 and Shh. Overall, our data suggest that the miR-206-3p regulate the cellular physiology during tooth morphogenesis through modulation of the Wnt, Bmp, Fgf, and Shh signaling pathways to form proper tooth pulp and crown.
Collapse
Affiliation(s)
- Sanjiv Neupane
- Department of Biochemistry, School of Dentistry, Kyungpook National University, Daegu 41940, Korea; (Y.P.A.); (T.-Y.K.); (C.-Y.Y.); (Y.L.)
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, NY 11794-5215, USA
| | - Yam Prasad Aryal
- Department of Biochemistry, School of Dentistry, Kyungpook National University, Daegu 41940, Korea; (Y.P.A.); (T.-Y.K.); (C.-Y.Y.); (Y.L.)
| | - Tae-Young Kim
- Department of Biochemistry, School of Dentistry, Kyungpook National University, Daegu 41940, Korea; (Y.P.A.); (T.-Y.K.); (C.-Y.Y.); (Y.L.)
| | - Chang-Yeol Yeon
- Department of Biochemistry, School of Dentistry, Kyungpook National University, Daegu 41940, Korea; (Y.P.A.); (T.-Y.K.); (C.-Y.Y.); (Y.L.)
| | - Chang-Hyeon An
- Department of Oral and Maxillofacial Radiology, School of Dentistry, Kyungpook National University, Daegu 41940, Korea;
| | - Ji-Youn Kim
- Department of Dental Hygiene, College of Health Science, Gachon University, Incheon 21936, Korea;
| | - Hitoshi Yamamoto
- Department of Histology and Developmental Biology, Tokyo Dental College, Tokyo 101-0061, Japan;
| | - Youngkyun Lee
- Department of Biochemistry, School of Dentistry, Kyungpook National University, Daegu 41940, Korea; (Y.P.A.); (T.-Y.K.); (C.-Y.Y.); (Y.L.)
| | - Wern-Joo Sohn
- Pre-Major of Cosmetics and Pharmaceutics, Daegu Haany University, Gyeongsan 38610, Korea;
| | - Jae-Young Kim
- Department of Biochemistry, School of Dentistry, Kyungpook National University, Daegu 41940, Korea; (Y.P.A.); (T.-Y.K.); (C.-Y.Y.); (Y.L.)
| |
Collapse
|
4
|
Regulation of mesenchymal signaling in palatal mucosa differentiation. Histochem Cell Biol 2017; 149:143-152. [DOI: 10.1007/s00418-017-1620-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/09/2017] [Indexed: 12/24/2022]
|
5
|
Adhikari N, Neupane S, Roh J, Jun JH, Jung JK, Sohn WJ, Kim JY, Kim JY. Immunolocalization patterns of cytokeratins during salivary acinar cell development in mice. J Mol Histol 2017; 49:1-15. [PMID: 29181608 DOI: 10.1007/s10735-017-9742-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Accepted: 11/14/2017] [Indexed: 10/18/2022]
Abstract
Embryonic development of the mouse salivary glands begins with epithelial thickening and continues with sequential changes from the pre-bud to terminal bud stages. After birth, morphogenesis proceeds, and the glands develop into a highly branched epithelial structure that terminates with saliva-producing acinar cells at the adult stage. Acinar cells derived from the epithelium are differentiated into serous, mucous, and seromucous types. During differentiation, cytokeratins, intermediate filaments found in most epithelial cells, play vital roles. Although the localization patterns and developmental roles of cytokeratins in different epithelial organs, including the mammary glands, circumvallate papilla, and sweat glands, have been well studied, their stage-specific localization and morphogenetic roles during salivary gland development have yet to be elucidated. Therefore, the aim of this study was to determine the stage and acinar cell type-specific localization pattern of cytokeratins 4, 5, 7, 8, 13, 14, 18, and 19 in the major salivary glands (submandibular, sublingual, and parotid glands) of the mouse at the E15.5, PN0, PN10, and adult stages. In addition, cell physiology, including cell proliferation, was examined during development via immunostaining for Ki67 to understand the cellular mechanisms that govern acinar cell differentiation during salivary gland morphogenesis. The distinct localization patterns of cytokeratins in conjunction with cell physiology will reveal the roles of epithelial cells in salivary gland formation during the differentiation of serous, mucous or seromucous salivary glands.
Collapse
Affiliation(s)
- Nirpesh Adhikari
- Department of Biochemistry, School of Dentistry, IHBR, Kyungpook National University, Daegu, South Korea
| | - Sanjiv Neupane
- Department of Biochemistry, School of Dentistry, IHBR, Kyungpook National University, Daegu, South Korea
| | - Jiyeon Roh
- Department of Dental Hygiene, Yonsei University Wonju College of Medicine, Wonju, South Korea
| | - Jong Hwa Jun
- Department of Ophthalmology, School of Medicine, Dongsan Medical Center, Keimyung University, Daegu, South Korea
| | - Jae-Kwang Jung
- Department of Oral Medicine, School of Dentistry, Kyungpook National University, Daegu, South Korea
| | - Wern-Joo Sohn
- Department of Biochemistry, School of Dentistry, IHBR, Kyungpook National University, Daegu, South Korea
| | - Jae-Young Kim
- Department of Biochemistry, School of Dentistry, IHBR, Kyungpook National University, Daegu, South Korea.
| | - Ji-Youn Kim
- Department of Dental Hygiene, College of Health Science, Gachon University, 191, Hambangmoe-ro, Yeonsu-gu, Incheon, South Korea.
| |
Collapse
|
6
|
Yu F, Cai W, Jiang B, Xu L, Liu S, Zhao S. A novel mutation of adenomatous polyposis coli (APC) gene results in the formation of supernumerary teeth. J Cell Mol Med 2017; 22:152-162. [PMID: 28782241 PMCID: PMC5742724 DOI: 10.1111/jcmm.13303] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 05/27/2017] [Indexed: 12/15/2022] Open
Abstract
Supernumerary teeth are teeth that are present in addition to normal teeth. Although several hypotheses and some molecular signalling pathways explain the formation of supernumerary teeth, but their exact disease pathogenesis is unknown. To study the molecular mechanisms of supernumerary tooth‐related syndrome (Gardner syndrome), a deeper understanding of the aetiology of supernumerary teeth and the associated syndrome is needed, with the goal of inhibiting disease inheritance via prenatal diagnosis. We recruited a Chinese family with Gardner syndrome. Haematoxylin and eosin staining of supernumerary teeth and colonic polyp lesion biopsies revealed that these patients exhibited significant pathological characteristics. APC gene mutations were detected by PCR and direct sequencing. We revealed the pathological pathway involved in human supernumerary tooth development and the mouse tooth germ development expression profile by RNA sequencing (RNA‐seq). Sequencing analysis revealed that an APC gene mutation in exon 15, namely 4292‐4293‐Del GA, caused Gardner syndrome in this family. This mutation not only initiated the various manifestations typical of Gardner syndrome but also resulted in odontoma and supernumerary teeth in this case. Furthermore, RNA‐seq analysis of human supernumerary teeth suggests that the APC gene is the key gene involved in the development of supernumerary teeth in humans. The mouse tooth germ development expression profile shows that the APC gene plays an important role in tooth germ development. We identified a new mutation in the APC gene that results in supernumerary teeth in association with Gardner syndrome. This information may shed light on the molecular pathogenesis of supernumerary teeth. Gene‐based diagnosis and gene therapy for supernumerary teeth may become available in the future, and our study provides a high‐resolution reference for treating other syndromes associated with supernumerary teeth.
Collapse
Affiliation(s)
- Fang Yu
- Department of Pediatric Dentistry, School & Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Wenping Cai
- Center for Translational Neurodegeneration and Regenerative Therapy, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.,Department of Stomatology, Huashan Hospital, Fudan University, Shanghai, China
| | - Beizhan Jiang
- Department of Endodontics, School & Hospital of Stomatology, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Tongji University, Shanghai, China
| | - Laijun Xu
- Department of Stomatology, Huashan Hospital, Fudan University, Shanghai, China
| | - Shangfeng Liu
- Department of Stomatology, Huashan Hospital, Fudan University, Shanghai, China
| | - Shouliang Zhao
- Department of Stomatology, Huashan Hospital, Fudan University, Shanghai, China.,Department of Endodontics, School & Hospital of Stomatology, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Tongji University, Shanghai, China
| |
Collapse
|
7
|
Bustin S. The continuing problem of poor transparency of reporting and use of inappropriate methods for RT-qPCR. BIOMOLECULAR DETECTION AND QUANTIFICATION 2017; 12:7-9. [PMID: 28702367 PMCID: PMC5496741 DOI: 10.1016/j.bdq.2017.05.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Revised: 05/15/2017] [Accepted: 05/16/2017] [Indexed: 11/28/2022]
Abstract
Attendance at this year’s European Calcified Tissue Society’s (ECTS) Congress reveals that the methods used to obtain qPCR results continue to be significantly flawed and that and their reporting remain inadequate.
Collapse
Affiliation(s)
- Stephen Bustin
- Faculty of Medical Science, Anglia Ruskin University, Bishop Hall Lane, Chelmsford, CM1 1SQ, UK
| |
Collapse
|
8
|
Yiew NKH, Chatterjee TK, Tang YL, Pellenberg R, Stansfield BK, Bagi Z, Fulton DJ, Stepp DW, Chen W, Patel V, Kamath VM, Litwin SE, Hui DY, Rudich SM, Kim HW, Weintraub NL. A novel role for the Wnt inhibitor APCDD1 in adipocyte differentiation: Implications for diet-induced obesity. J Biol Chem 2017; 292:6312-6324. [PMID: 28242765 PMCID: PMC5391760 DOI: 10.1074/jbc.m116.758078] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 02/15/2017] [Indexed: 01/03/2023] Open
Abstract
Impaired adipogenic differentiation during diet-induced obesity (DIO) promotes adipocyte hypertrophy and inflammation, thereby contributing to metabolic disease. Adenomatosis polyposis coli down-regulated 1 (APCDD1) has recently been identified as an inhibitor of Wnt signaling, a key regulator of adipogenic differentiation. Here we report a novel role for APCDD1 in adipogenic differentiation via repression of Wnt signaling and an epigenetic linkage between miR-130 and APCDD1 in DIO. APCDD1 expression was significantly up-regulated in mature adipocytes compared with undifferentiated preadipocytes in both human and mouse subcutaneous adipose tissues. siRNA-based silencing of APCDD1 in 3T3-L1 preadipocytes markedly increased the expression of Wnt signaling proteins (Wnt3a, Wnt5a, Wnt10b, LRP5, and β-catenin) and inhibited the expression of adipocyte differentiation markers (CCAAT/enhancer-binding protein α (C/EBPα) and peroxisome proliferator-activated receptor γ (PPARγ)) and lipid droplet accumulation, whereas adenovirus-mediated overexpression of APCDD1 enhanced adipogenic differentiation. Notably, DIO mice exhibited reduced APCDD1 expression and increased Wnt expression in both subcutaneous and visceral adipose tissues and impaired adipogenic differentiation in vitro Mechanistically, we found that miR-130, whose expression is up-regulated in adipose tissues of DIO mice, could directly target the 3'-untranslated region of the APCDD1 gene. Furthermore, transfection of an miR-130 inhibitor in preadipocytes enhanced, whereas an miR-130 mimic blunted, adipogenic differentiation, suggesting that miR-130 contributes to impaired adipogenic differentiation during DIO by repressing APCDD1 expression. Finally, human subcutaneous adipose tissues isolated from obese individuals exhibited reduced expression of APCDD1, C/EBPα, and PPARγ compared with those from non-obese subjects. Taken together, these novel findings suggest that APCDD1 positively regulates adipogenic differentiation and that its down-regulation by miR-130 during DIO may contribute to impaired adipogenic differentiation and obesity-related metabolic disease.
Collapse
Affiliation(s)
- Nicole K H Yiew
- From the Departments of Pharmacology and Toxicology
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia 30912
| | - Tapan K Chatterjee
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia 30912
- Medicine, Division of Cardiology
| | - Yao Liang Tang
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia 30912
- Medicine, Division of Cardiology
| | | | - Brian K Stansfield
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia 30912
- Pediatrics
| | - Zsolt Bagi
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia 30912
- Medicine, Division of Cardiology
| | - David J Fulton
- From the Departments of Pharmacology and Toxicology
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia 30912
| | - David W Stepp
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia 30912
- Physiology
| | | | | | | | - Sheldon E Litwin
- the Department of Medicine, Division of Cardiology, Medical University of South Carolina, Charleston, South Carolina 29425
| | - David Y Hui
- the Department of Pathology and Lab Medicine, University of Cincinnati, Cincinnati, Ohio 45219, and
| | | | - Ha Won Kim
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia 30912,
- Medicine, Division of Cardiology
| | - Neal L Weintraub
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia 30912,
- Medicine, Division of Cardiology
| |
Collapse
|
9
|
Jung JK, Jung HI, Neupane S, Kim KR, Kim JY, Yamamoto H, Cho SW, Lee Y, Shin HI, Sohn WJ, Kim JY. Involvement of PI3K and PKA pathways in mouse tongue epithelial differentiation. Acta Histochem 2017; 119:92-98. [PMID: 27939449 DOI: 10.1016/j.acthis.2016.11.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Revised: 10/28/2016] [Accepted: 11/30/2016] [Indexed: 12/30/2022]
Abstract
In mice, tongue epithelial differentiation is mainly regulated by the interactions among various signalling molecules including Fgf signalling pathways. However, the subsequent signalling modulations for epithelial maturation, initiated by Fgf signalling, remain to be elucidated. Therefore, we employed an in vitro tongue organ cultivation system along with the applications of various pharmacological inhibitors against the intracellular signalling molecules of Fgf signalling pathways, including H89, LY294002, PD98059, and U0126. Following treatments with LY294002 and H89, inhibitors for PI3K and PKA, respectively, the decreased thickness of the tongue epithelium was observed along with the alteration in cell proliferative and apoptotic patterns. Meanwhile, cultivated tongues treated with MEK inhibitor U0126 or PD98059 showed significantly decreased cell proliferation in the tongue epithelium and the mesenchyme. Based on these results, we suggest that the tongue epithelium is differentiated into multiple epithelial cell layers via the PI3K and PKA pathways in tissue-specific manner during the epithelial-mesenchymal interactions.
Collapse
Affiliation(s)
- Jae-Kwang Jung
- Department of Oral Medicine, School of Dentistry, IHBR, Kyungpook National University, Daegu, South Korea
| | - Hye-In Jung
- Department of Biochemistry, School of Dentistry, IHBR, Kyungpook National University, Daegu, South Korea
| | - Sanjiv Neupane
- Department of Biochemistry, School of Dentistry, IHBR, Kyungpook National University, Daegu, South Korea
| | - Ki-Rim Kim
- Department of Dental Hygiene, IHBR, Kyungpook National University, Daegu, South Korea
| | - Ji-Youn Kim
- Department of Dental Hygiene, Gachon University College of Health Science, Incheon, Seoul, South Korea
| | - Hitoshi Yamamoto
- Department of Histology and Developmental Biology, Tokyo Dental College, Tokyo, Japan
| | - Sung-Won Cho
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Yonsei University College of Dentistry, Seoul, South Korea
| | - Youngkyun Lee
- Department of Biochemistry, School of Dentistry, IHBR, Kyungpook National University, Daegu, South Korea
| | - Hong-In Shin
- Department of Oral Pathology and Regenerative Medicine, School of Dentistry, Daegu, South Korea
| | - Wern-Joo Sohn
- IHBR, Kyungpook National University, Daegu, South Korea.
| | - Jae-Young Kim
- Department of Biochemistry, School of Dentistry, IHBR, Kyungpook National University, Daegu, South Korea.
| |
Collapse
|
10
|
Grhl3 modulates epithelial structure formation of the circumvallate papilla during mouse development. Histochem Cell Biol 2016; 147:5-16. [DOI: 10.1007/s00418-016-1487-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/26/2016] [Indexed: 02/06/2023]
|
11
|
Taatjes DJ, Roth J. The Histochemistry and Cell Biology omnium-gatherum: the year 2015 in review. Histochem Cell Biol 2016; 145:239-74. [DOI: 10.1007/s00418-016-1417-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/01/2016] [Indexed: 02/07/2023]
|