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Xing X, Zeng Z, Wang Y, Pan B, Huang X. Identification of potential molecular mechanism related to craniofacial dysmorphism caused by FOXI3 deficiency. Mol Genet Genomic Med 2024; 12:e2411. [PMID: 38433559 PMCID: PMC10910234 DOI: 10.1002/mgg3.2411] [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: 08/21/2023] [Revised: 02/08/2024] [Accepted: 02/13/2024] [Indexed: 03/05/2024] Open
Abstract
BACKGROUND Hemifacial macrosomia (HFM, OMIM 164210) is a complex and highly heterogeneous disease. FORKHEAD BOX I3 (FOXI3) is a susceptibility gene for HFM, and mice with loss of function of Foxi3 did exhibit a phenotype similar to craniofacial dysmorphism. However, the specific pathogenesis of HFM caused by FOXI3 deficiency remains unclear till now. METHOD In this study, we first constructed a Foxi3 deficiency (Foxi3-/- ) mouse model to verify the craniofacial phenotype of Foxi3-/- mice, and then used RNAseq data for gene differential expression analysis to screen candidate pathogenic genes, and conducted gene expression verification analysis using quantitative real-time PCR. RESULTS By observing the phenotype of Foxi3-/- mice, we found that craniofacial dysmorphism was present. The results of comprehensive bioinformatics analysis suggested that the craniofacial dysmorphism caused by Foxi3 deficiency may be involved in the PI3K-Akt signaling pathway. Quantitative real-time PCR results showed that the expression of PI3K-Akt signaling pathway-related gene Akt2 was significantly increased in Foxi3-/- mice. CONCLUSION The craniofacial dysmorphism caused by the deficiency of Foxi3 may be related to the expression of Akt2 and PI3K-Akt signaling pathway. This study laid a foundation for understanding the function of FOXI3 and the pathogenesis and treatment of related craniofacial dysmorphism caused by FOXI3 dysfunction.
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Affiliation(s)
- Xiao‐Liang Xing
- School of Basic MedicineNingxia Medical UniversityYinchuanNingxiaChina
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese MedicineHunan University of MedicineChangshaChina
| | - Ziqiang Zeng
- School of Basic MedicineNingxia Medical UniversityYinchuanNingxiaChina
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese MedicineHunan University of MedicineChangshaChina
| | - Yana Wang
- School of Basic MedicineNingxia Medical UniversityYinchuanNingxiaChina
| | - Bo Pan
- Department of Auricular Reconstruction, Plastic Surgery HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Xueshuang Huang
- School of Basic MedicineNingxia Medical UniversityYinchuanNingxiaChina
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese MedicineHunan University of MedicineChangshaChina
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Umar M, Bartoletti G, Dong C, Gahankari A, Browne D, Deng A, Jaramillo J, Sammarco M, Simkin J, He F. Characterizing the role of Pdgfra in calvarial development. Dev Dyn 2023; 252:589-604. [PMID: 36606407 PMCID: PMC10159935 DOI: 10.1002/dvdy.564] [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: 08/05/2022] [Revised: 12/21/2022] [Accepted: 12/28/2022] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Mammalian calvarium is composed of flat bones developed from two origins, neural crest, and mesoderm. Cells from both origins exhibit similar behavior but express distinct transcriptomes. It is intriguing to ask whether genes shared by both origins play similar or distinct roles in development. In the present study, we have examined the role of Pdgfra, which is expressed in both neural crest and mesoderm, in specific lineages during calvarial development. RESULTS We found that in calvarial progenitor cells, Pdgfra is needed to maintain normal proliferation and migration of neural crest cells but only proliferation of mesoderm cells. Later in calvarial osteoblasts, we found that Pdgfra is necessary for both proliferation and differentiation of neural crest-derived cells, but not for differentiation of mesoderm-derived cells. We also examined the potential interaction between Pdgfra and other signaling pathway involved in calvarial osteoblasts but did not identify significant alteration of Wnt or Hh signaling activity in Pdgfra genetic models. CONCLUSIONS Pdgfra is required for normal calvarial development in both neural crest cells and mesoderm cells, but these lineages exhibit distinct responses to alteration of Pdgfra activity.
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Affiliation(s)
- Meenakshi Umar
- Department of Cell and Molecular Biology, School of Science and Engineering, Tulane University, New Orleans, Louisiana, USA
| | - Garrett Bartoletti
- Department of Cell and Molecular Biology, School of Science and Engineering, Tulane University, New Orleans, Louisiana, USA
| | - Chunmin Dong
- Department of Cell and Molecular Biology, School of Science and Engineering, Tulane University, New Orleans, Louisiana, USA
| | - Apurva Gahankari
- Department of Cell and Molecular Biology, School of Science and Engineering, Tulane University, New Orleans, Louisiana, USA
| | - Danielle Browne
- Department of Cell and Molecular Biology, School of Science and Engineering, Tulane University, New Orleans, Louisiana, USA
| | - Alastair Deng
- Department of Cell and Molecular Biology, School of Science and Engineering, Tulane University, New Orleans, Louisiana, USA
| | - Josue Jaramillo
- Department of Surgery, Tulane School of Medicine, New Orleans, Louisiana, USA
| | - Mimi Sammarco
- Department of Surgery, Tulane School of Medicine, New Orleans, Louisiana, USA
| | - Jennifer Simkin
- Department of Orthopaedic Surgery, Health Sciences Center, Louisiana State University, New Orleans, Louisiana, USA
| | - Fenglei He
- Department of Cell and Molecular Biology, School of Science and Engineering, Tulane University, New Orleans, Louisiana, USA
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Fu J, Zhang X, Zheng H, Yang G, Chen Z, Yuan G. A WWP2-PTEN-KLF5 signaling axis regulates odontoblast differentiation and dentinogenesis in mice. J Biol Chem 2022; 298:102220. [PMID: 35780838 PMCID: PMC9358474 DOI: 10.1016/j.jbc.2022.102220] [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: 03/22/2022] [Revised: 06/20/2022] [Accepted: 06/22/2022] [Indexed: 11/28/2022] Open
Abstract
WW domain–containing E3 Ubiquitin-protein ligase 2 (WWP2) has been found to positively regulate odontoblastic differentiation by monoubiquitinating the transcription factor Kruppel-like factor 5 (KLF5) in a cell culture system. However, the in vivo role of WWP2 in mouse teeth remains unknown. To explore this, here we generated Wwp2 knockout (Wwp2 KO) mice. We found that molars in Wwp2 KO mice exhibited thinner dentin, widened predentin, and reduced numbers of dentinal tubules. In addition, expression of the odontoblast differentiation markers Dspp and Dmp1 was decreased in the odontoblast layers of Wwp2 KO mice. These findings demonstrate that WWP2 may facilitate odontoblast differentiation and dentinogenesis. Furthermore, we show for the first time that phosphatase and tensin homolog (PTEN), a tumor suppressor, is expressed in dental papilla cells and odontoblasts of mouse molars and acts as a negative regulator of odontoblastic differentiation. Further investigation indicated that PTEN is targeted by WWP2 for degradation during odontoblastic differentiation. We demonstrate PTEN physically interacts with and inhibits the transcriptional activity of KLF5 on Dspp and Dmp1. Finally, we found WWP2 was able to suppress the interaction between PTEN and KLF5, which diminished the inhibition effect of PTEN on KLF5. Taken together, this study confirms the essential role of WWP2 and the WWP2–PTEN–KLF5 signaling axis in odontoblast differentiation and dentinogenesis in vivo.
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Affiliation(s)
- Jing Fu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China; Frontier Science Center for Immunology and Metabolism, Wuhan University, Wuhan, China
| | - Xiaobo Zhang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China; Frontier Science Center for Immunology and Metabolism, Wuhan University, Wuhan, China
| | - Huiwen Zheng
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China; Frontier Science Center for Immunology and Metabolism, Wuhan University, Wuhan, China
| | - Guobin Yang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Zhi Chen
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Guohua Yuan
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China; Frontier Science Center for Immunology and Metabolism, Wuhan University, Wuhan, China.
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Katsianou MA, Papavassiliou KA, Gargalionis AN, Agrogiannis G, Korkolopoulou P, Panagopoulos D, Themistocleous MS, Piperi C, Basdra EK, Papavassiliou AG. Polycystin‐1 regulates cell proliferation and migration through AKT/mTORC2 pathway in a human craniosynostosis cell model. J Cell Mol Med 2022; 26:2428-2437. [PMID: 35285136 PMCID: PMC8995461 DOI: 10.1111/jcmm.17266] [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: 02/15/2022] [Revised: 02/28/2022] [Accepted: 03/03/2022] [Indexed: 11/30/2022] Open
Abstract
Craniosynostosis is the premature fusion of skull sutures and has a severe pathological impact on childrens’ life. Mechanical forces are capable of triggering biological responses in bone cells and regulate osteoblastogenesis in cranial sutures, leading to premature closure. The mechanosensitive proteins polycystin‐1 (PC1) and polycystin‐2 (PC2) have been documented to play an important role in craniofacial proliferation and development. Herein, we investigated the contribution of PC1 to the pathogenesis of non‐syndromic craniosynostosis and the associated molecular mechanisms. Protein expression of PC1 and PC2 was detected in bone fragments derived from craniosynostosis patients via immunohistochemistry. To explore the modulatory role of PC1 in primary cranial suture cells, we further abrogated the function of PC1 extracellular mechanosensing domain using a specific anti‐PC1 IgPKD1 antibody. Effect of IgPKD1 treatment was evaluated with cell proliferation and migration assays. Activation of PI3K/AKT/mTOR pathway components was further detected via Western blot in primary cranial suture cells following IgPKD1 treatment. PC1 and PC2 are expressed in human tissues of craniosynostosis. PC1 functional inhibition resulted in elevated proliferation and migration of primary cranial suture cells. PC1 inhibition also induced activation of AKT, exhibiting elevated phospho (p)‐AKT (Ser473) levels, but not 4EBP1 or p70S6K activation. Our findings indicate that PC1 may act as a mechanosensing molecule in cranial sutures by modulating osteoblastic cell proliferation and migration through the PC1/AKT/mTORC2 cascade with a potential impact on the development of non‐syndromic craniosynostosis.
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Affiliation(s)
- Maria A. Katsianou
- Department of Biological Chemistry Medical School National and Kapodistrian University of Athens Athens Greece
| | - Kostas A. Papavassiliou
- Department of Biological Chemistry Medical School National and Kapodistrian University of Athens Athens Greece
| | - Antonios N. Gargalionis
- Department of Biological Chemistry Medical School National and Kapodistrian University of Athens Athens Greece
| | - George Agrogiannis
- First Department of Pathology Medical School National and Kapodistrian University of Athens Athens Greece
| | - Penelope Korkolopoulou
- First Department of Pathology Medical School National and Kapodistrian University of Athens Athens Greece
| | | | | | - Christina Piperi
- Department of Biological Chemistry Medical School National and Kapodistrian University of Athens Athens Greece
| | - Efthimia K. Basdra
- Department of Biological Chemistry Medical School National and Kapodistrian University of Athens Athens Greece
| | - Athanasios G. Papavassiliou
- Department of Biological Chemistry Medical School National and Kapodistrian University of Athens Athens Greece
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Lesciotto KM, Tomlinson L, Leonard S, Richtsmeier JT. Embryonic and Early Postnatal Cranial Bone Volume and Tissue Mineral Density Values for C57BL/6J Laboratory Mice. Dev Dyn 2022; 251:1196-1208. [PMID: 35092111 PMCID: PMC9250594 DOI: 10.1002/dvdy.458] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 01/18/2022] [Accepted: 01/20/2022] [Indexed: 11/27/2022] Open
Abstract
Background Laboratory mice are routinely used in craniofacial research based on the relatively close genetic relationship and conservation of developmental pathways between humans and mice. Since genetic perturbations and disease states may have localized effects, data from individual cranial bones are valuable for the interpretation of experimental assays. We employ high‐resolution microcomputed tomography to characterize cranial bones of C57BL/6J mice at embryonic day (E) 15.5 and E17.5, day of birth (P0), and postnatal day 7 (P7) and provide estimates of individual bone volume and tissue mineral density (TMD). Results Average volume and TMD values are reported for individual bones. Significant differences in volume and TMD during embryonic ages likely reflect early mineralization of cranial neural crest‐derived and intramembranously forming bones. Although bones of the face and vault had higher TMD values during embryonic ages, bones of the braincase floor had significantly higher TMD values by P7. Conclusions These ontogenetic data on cranial bone volume and TMD serve as a reference standard for future studies using mice bred on a C57BL/6J genetic background. Our findings also highlight the importance of differentiating “control” data from mice that are presented as “unaffected” littermates, particularly when carrying a single copy of a cre‐recombinase gene. Higher average volume and density of cranial neural crest‐derived and intramembranously‐forming bones during embryonic development. Higher average density in bones of the braincase floor during early postnatal development. Ontogenetic data on cranial bone volume and TMD serve as a reference standard for mice bred on a C57BL/6J genetic background.
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Affiliation(s)
- Kate M Lesciotto
- College of Osteopathic Medicine, Sam Houston State University, Conroe, TX, USA
| | | | - Steven Leonard
- College of Medicine, Drexel University, Philadelphia, PA, USA
| | - Joan T Richtsmeier
- Department of Anthropology, Pennsylvania State University, University Park, PA, USA
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Protein tyrosine phosphatases in skeletal development and diseases. Bone Res 2022; 10:10. [PMID: 35091552 PMCID: PMC8799702 DOI: 10.1038/s41413-021-00181-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 07/29/2021] [Accepted: 09/14/2021] [Indexed: 12/24/2022] Open
Abstract
Skeletal development and homeostasis in mammals are modulated by finely coordinated processes of migration, proliferation, differentiation, and death of skeletogenic cells originating from the mesoderm and neural crest. Numerous molecular mechanisms are involved in these regulatory processes, one of which is protein posttranslational modifications, particularly protein tyrosine phosphorylation (PYP). PYP occurs mainly through the action of protein tyrosine kinases (PTKs), modifying protein enzymatic activity, changing its cellular localization, and aiding in the assembly or disassembly of protein signaling complexes. Under physiological conditions, PYP is balanced by the coordinated action of PTKs and protein tyrosine phosphatases (PTPs). Dysregulation of PYP can cause genetic, metabolic, developmental, and oncogenic skeletal diseases. Although PYP is a reversible biochemical process, in contrast to PTKs, little is known about how this equilibrium is modulated by PTPs in the skeletal system. Whole-genome sequencing has revealed a large and diverse superfamily of PTP genes (over 100 members) in humans, which can be further divided into cysteine (Cys)-, aspartic acid (Asp)-, and histidine (His)-based PTPs. Here, we review current knowledge about the functions and regulatory mechanisms of 28 PTPs involved in skeletal development and diseases; 27 of them belong to class I and II Cys-based PTPs, and the other is an Asp-based PTP. Recent progress in analyzing animal models that harbor various mutations in these PTPs and future research directions are also discussed. Our literature review indicates that PTPs are as crucial as PTKs in supporting skeletal development and homeostasis.
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Bartoletti G, Dong C, Umar M, He F. Pdgfra regulates multipotent cell differentiation towards chondrocytes via inhibiting Wnt9a/beta-catenin pathway during chondrocranial cartilage development. Dev Biol 2020; 466:36-46. [PMID: 32800757 DOI: 10.1016/j.ydbio.2020.08.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 08/05/2020] [Accepted: 08/06/2020] [Indexed: 12/31/2022]
Abstract
The mammalian skull is composed of the calvarial bones and cartilages. Malformation of craniofacial cartilage has been identified in multiple human syndromes. However, the mechanisms of their development remain largely unknown. In the present study, we identified Pdgfra as a novel player of chondrocranial cartilage development. Our data show that Pdgfra is required for normal chondrocranial cartilage development. Using tissue-specific genetic tools, we demonstrated that Pdgfra is essential for chondrocyte progenitors formation, but not in mature chondrocytes. Further analysis revealed that Pdgfra regulates chondrocytes progenitors development at two stages: in embryonic mesenchymal stem cells (eMSCs), Pdgfra directs their differentiation toward chondrocyte progenitors; in chondrocytes progenitors, Pdgfra activation promotes cell proliferation. We also found that excessive Pdgfra activity causes ectopic cartilage formation. Our data show that Pdgfra directs eMSCs differentiation via inhibiting Wnt9a transcription and its downstream signaling, and activating Wnt signaling rescues ectopic cartilage phenotype caused by excessive Pdgfra activity. In summary, our study dissected the role of Pdgfra signaling in chondrocranial cartilage formation, and illustrated the underlying mechanisms at multiple stages.
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Affiliation(s)
- Garrett Bartoletti
- Department of Cell and Molecular Biology, Tulane University, New Orleans, LA, 70118, USA
| | - Chunmin Dong
- Department of Cell and Molecular Biology, Tulane University, New Orleans, LA, 70118, USA
| | - Meenakshi Umar
- Department of Cell and Molecular Biology, Tulane University, New Orleans, LA, 70118, USA
| | - Fenglei He
- Department of Cell and Molecular Biology, Tulane University, New Orleans, LA, 70118, USA.
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Tamoxifen exposure induces cleft palate in mice. Br J Oral Maxillofac Surg 2020; 59:52-57. [PMID: 32723574 DOI: 10.1016/j.bjoms.2020.07.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 07/09/2020] [Indexed: 02/08/2023]
Abstract
Cleft palate is a common birth defect in mammals, which can be caused by genetic or environmental factors, or both. Decades have witnessed that many environmental exposures during gestation extremely increase the incidence of cleft palate. Tamoxifen (TAM), a widely-used drug in treating breast cancer, has been reported to be associated with craniofacial defects including micrognathia and cleft palate in humans. However, its exact effects on the developing palate remain unclear. Here we took advantage of a mouse model to explore how TAM affects palatal development at the molecular level. We showed that excess exposure of TAM in the early embryonic stages indeed leads to cleft palate in mice. RNA-sequencing results strongly suggest the involvement of mitogen-activated protein kinase (MAPK) signalling in TAM-induced cleft palate. Interestingly, in the anterior portion of the TAM-treated palatal shelf, phosphorylated (p)-AKT and p-ERK1/2 were activated but p-p38 was inhibited, while in the posterior palate, the p-AKT increased but the levels of p-p38 and p-JNK decreased. We conclude that excess TAM exposure causes cleft palate defects in mice by regulating MAPK pathways, which implicates the importance of tightly-regulated MAPK signalling in palatal development. This study provides a basis for further exploration of the molecular aetiology of cleft palate defects caused by environmental factors and, based on our results, we would give a serious warning regarding prescription of TAM and potential cleft palate defects in animal models involving the inducible Cre-LoxP system.
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Dong C, Umar M, Bartoletti G, Gahankari A, Fidelak L, He F. Expression pattern of Kmt2d in murine craniofacial tissues. Gene Expr Patterns 2019; 34:119060. [PMID: 31228576 DOI: 10.1016/j.gep.2019.119060] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 05/23/2019] [Accepted: 06/10/2019] [Indexed: 12/16/2022]
Abstract
Formation of the calvaria is a multi-staged process and is regulated by multiple genetic factors. Disruption of normal calvarial development usually causes craniosynostosis, a prevalent birth defect characterized by premature fusion of calvarial bone. Recent studies have identified mutations of KMT2D allele in patients with craniosynostosis, indicating a potential role for Kmt2d in calvarial development. KMT2D mutations have also been implicated in Kabuki syndrome, which features a distinct facial appearance, skeletal abnormality, growth retardation and intellectual disability. However, the expression pattern of Kmt2d has not been fully elucidated. In the present study we examined the expression pattern of Kmt2d at multiple stages of embryo development in mice, with a focus on the craniofacial tissues. Our in situ hybridization results showed that Kmt2d mRNA is expressed in the developing calvarial osteoblasts, epithelia and neural tissues. Such an expression pattern is in line with the phenotypes of Kabuki syndrome, suggesting that Kmt2d plays an intrinsic role in normal development and homeostasis of these craniofacial tissues.
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Affiliation(s)
- Chunmin Dong
- Department of Cell and Molecular Biology, Tulane University, New Orleans, LA 70118, USA
| | - Meenakshi Umar
- Department of Cell and Molecular Biology, Tulane University, New Orleans, LA 70118, USA
| | - Garrett Bartoletti
- Department of Cell and Molecular Biology, Tulane University, New Orleans, LA 70118, USA
| | - Apurva Gahankari
- Department of Cell and Molecular Biology, Tulane University, New Orleans, LA 70118, USA
| | - Lauren Fidelak
- Department of Cell and Molecular Biology, Tulane University, New Orleans, LA 70118, USA
| | - Fenglei He
- Department of Cell and Molecular Biology, Tulane University, New Orleans, LA 70118, USA.
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Zhu S, Liu W, Ding HF, Cui H, Yang L. BMP4 and Neuregulin regulate the direction of mouse neural crest cell differentiation. Exp Ther Med 2019; 17:3883-3890. [PMID: 31007733 PMCID: PMC6468403 DOI: 10.3892/etm.2019.7439] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 11/09/2018] [Indexed: 12/29/2022] Open
Abstract
The neural crest is a transient embryonic tissue that initially generates neural crest stem cells, which then migrate throughout the body to give rise to a variety of mature tissues. It was proposed that the fate of neural crest cells is gradually determined via environmental cues from the surrounding tissues. In the present study, neural crest cells were isolated and identified from mouse embryos. Bone morphogenetic protein 4 (BMP4) and Neuregulin (NRG) were employed to induce the differentiation of neural crest cells. Treatment with BMP4 revealed neuron-associated differentiation; cells treated with NRG exhibited differentiation into the Schwann cell lineage, a type of glia. Soft agar clonogenic and neurosphere formation assays were conducted to investigate the effects of N-Myc (MYCN) overexpression in neural crest cells; the number of colonies and neurospheres notably increased after 14 days. These findings demonstrated that the direction of cell differentiation may be affected by altering the factors present in the surrounding environment. In addition, MYCN may serve a key role in regulating neural crest cell differentiation.
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Affiliation(s)
- Shunqin Zhu
- School of Life Sciences, Southwest University, Chongqing 400715, P.R. China.,State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, P.R. China
| | - Wanhong Liu
- School of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing 401331, P.R. China
| | - Han-Fei Ding
- Cancer Center, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
| | - Hongjuan Cui
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, P.R. China
| | - Liqun Yang
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, P.R. China
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Dinsmore CJ, Soriano P. MAPK and PI3K signaling: At the crossroads of neural crest development. Dev Biol 2018; 444 Suppl 1:S79-S97. [PMID: 29453943 PMCID: PMC6092260 DOI: 10.1016/j.ydbio.2018.02.003] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 02/06/2018] [Accepted: 02/06/2018] [Indexed: 02/08/2023]
Abstract
Receptor tyrosine kinase-mediated growth factor signaling is essential for proper formation and development of the neural crest. The many ligands and receptors implicated in these processes signal through relatively few downstream pathways, frequently converging on the MAPK and PI3K pathways. Despite decades of study, there is still considerable uncertainty about where and when these signaling pathways are required and how they elicit particular responses. This review summarizes our current understanding of growth factor-induced MAPK and PI3K signaling in the neural crest.
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Affiliation(s)
- Colin J Dinsmore
- Department of Cell, Developmental and Regenerative Biology, Tisch Cancer Institute, Icahn School of Medicine at Mt. Sinai, New York, NY 10029, USA
| | - Philippe Soriano
- Department of Cell, Developmental and Regenerative Biology, Tisch Cancer Institute, Icahn School of Medicine at Mt. Sinai, New York, NY 10029, USA.
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