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Total 574 papers of papers have been found
 
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TITLE Identification of a region in the human IRS2 promoter essential for stress induced transcription depending on SP1, NFI binding and ERK activation in HepG2 cells.    
Abstract
Recent studies have discovered changes in the insulin-/IGF1 signaling affecting glucose metabolism and the molecular pathogenesis of human hepatocellular cancer. Insulin/IGF1 receptor mediates its intracellular effects by recruitment of one out of the four different insulin receptor substrates (IRS). To investigate mechanisms of IRS2 expression, we analyzed transcriptional regulation of IRS2 in human HepG2 cells. We identified a region 688 bp upstream of the translation start codon responsible for approximately 90% of basal human IRS2 promoter activity in HepG2 cells, and confirmed binding of specificity protein 1 (also called Sp1 transcription factor, SP1) and nuclear factor 1 (NFI) in this region. Mutation of both SP1 and NFI binding sites or inhibition of extracellular signal regulated kinase (ERK) suppressed IRS2 promoter activity almost completely, revealing a major role of MAP kinases (MAPK) for IRS2 transcription. Activating this cascade with oxidative stress increased IRS2 promoter activity and endogenous IRS2 expression substantially. IRS2 promoter activity rose even more after additional inhibition of p38MAPK indicating an inhibitory effect of p38MAPK on ERK mediated IRS2 transcription. Activation of the MAPK pathway using interleukin 1, beta (IL1B) increased IRS2 promoter activity similar to oxidative stress. In contrast IL1B decreases and inhibition of the MAPK pathway increases IRS1 promoter activity revealing opposed effects of IL1B and ERK on the expression of different IRS proteins. In conclusion we discovered a specific region (-688 to -611 bp) in the IRS2 promoter essential for basal promoter activity and oxidative stress induced transcription depending on ERK activation and SP1 and NFI binding in human hepatocytes.
Author Freude S Hettich MM Krone W Laudes M Leeser U Schnitker J Schubert M Udelhoven M ID 19755487
TITLE Nuclear factor I transcription factors regulate IGF binding protein 5 gene transcription in human osteoblasts.    
Abstract
Insulin-like growth factor binding protein 5 (IGFBP5) is expressed in many cell types including osteoblasts and modulates IGF activities. IGFBP5 may affect osteoblasts and bone formation, in part by mechanisms independent of binding IGFs. The highly conserved IGFBP5 proximal promoter within 100 nucleotides of the start of transcription contains functional cis regulatory elements for C/EBP, Myb and AP-2. We report evidence for a functional Nuclear Factor I (NFI) cis element that mediates activation or repression of IGFBP5 transcription by the NFI gene family. All four NFI genes were expressed in human osteoblast cultures and osteosarcoma cell lines. Co-transfection with human IGFBP5 promoter luciferase reporter and murine Nfi expression vectors showed that Nfib was the most active in stimulating transcription. Nfix was less active and Nfia and Nfic were inhibitory. Knockdown of NFIB and NFIC expression using siRNA decreased and increased IGFBP5 expression, respectively. Analysis of IGFBP5 promoter deletion and mutation reporter constructs identified a functional NFI cis element. All four NFI proteins bound the NFI site in electrophoretic mobility shift experiments and NFIB bound in chromatin immunoprecipitation assays. Results suggest that NFI proteins are important regulators of IGFBP5 expression in human osteoblasts and thus in modulating IGFBP5 functions in bone.
Author Howard KD Linkhart TA Rehage MW Strong DD Wang X Pérez-Casellas LA ID 18809517
TITLE Differential binding of the transcription factors Sp1, AP-1, and NFI to the promoter of the human alpha5 integrin gene dictates its transcriptional activity.    
Abstract
PURPOSE: Damage to the corneal epithelium results in the massive secretion of fibronectin (FN) shortly after injury and induces the expression of its integrin receptor alpha5beta1. The authors reported previously that FN induces alpha5 expression in human corneal epithelial cells and rabbit corneal epithelial cells by altering the binding of the transcription factor (TF) Sp1 to a regulatory element from the alpha5 promoter that it is also flanked by binding sites for the TFs NFI and AP-1. Here, they assessed the function of NFI and AP-1 on alpha5 gene expression and evaluated the contribution of FN to their overall regulatory influence. METHODS: TF binding to the alpha5 promoter was evaluated in vitro by electrophoretic mobility shift assays and in vivo by ligation-mediated PCR or chromatin immunoprecipitation. TFs expression was monitored by Western blot, whereas their influence was assessed by transfection and RNAi analyses. RESULTS: Coexpression of Sp1, NFI, and AP-1 was demonstrated in all cell types, and each TF was shown to bind efficiently to the alpha5 promoter. Whereas both AP-1 and Sp1 activated expression directed by the alpha5 promoter, NFI functioned as a potent repressor of that gene. Interestingly, FN could either promote or repress alpha5 promoter activity in a cell density-dependent manner by differentially altering the ratio of these TFs. CONCLUSIONS: These results suggest that alpha5 gene expression is likely dictated by subtle alterations in the nuclear ratio of TFs that either repress (NFI) or activate (Sp1 and AP-1) alpha5 transcription in corneal epithelial cells.
Author Drouin R Germain L Guérin SL Leclerc S Masson-Gadais B Zaniolo K Gingras ME ID 18775869
TITLE Transcriptional regulation of the human alpha6 integrin gene by the transcription factor NFI during corneal wound healing.    
Abstract
PURPOSE: Wound healing of the corneal epithelium is highly influenced by regulation of integrin gene expression. A recent study demonstrated that laminin (LM), a major constituent of the extracellular matrix (ECM), reduces expression of the human alpha6 integrin subunit gene by altering the properties of the transcription factor (TF) Sp1. In this work, a target site was identified for the TF nuclear factor I (NFI) on the human alpha6 gene, and its regulatory influence was characterized in corneal epithelial cells. METHODS: Plasmids bearing the alpha6 promoter fused to the CAT gene were transfected into human (HCECs) and rabbit (RCECs) corneal epithelial cells grown on LM. The DNA-binding site for NFI in the alpha6 promoter was identified by DNase I footprinting. Expression and DNA binding of NFI was monitored by Western blot, RT-PCR, and electrophoretic mobility shift assays (EMSAs), and its function was investigated through RNAi and NFI overexpression assays. RESULTS: All NFI isoforms were found to be expressed in HCECs and RCECs. Transfection analyses revealed that NFI is a repressor of alpha6 expression in both types of cells. LM increases expression of NFI, whereas inhibition of each NFI isoform increases promoter activity suggesting that NFI is a key repressor of alpha6 transcription. In addition, the negative influence of NFI appears to be potentiated by the degradation of Sp1 when cells are grown on LM. CONCLUSIONS: Repression of alpha6 expression therefore contributes to the final steps of corneal wound healing by both reducing proliferation and allowing attachment of the epithelium to the basal membrane.
Author Carrier P Germain L Gingras ME Guérin SL Leclerc S Vigneault F Gaudreault M ID 18421093
TITLE Nuclear factor I gene expression in the developing forebrain.    
Abstract
Three members of the Nuclear Factor I (Nfi) gene family of transcription factors; Nfia, Nfib, and Nfix are highly expressed in the developing mouse brain. Nfia and Nfib knockout mice display profound defects in the development of midline glial populations and the development of forebrain commissures (das Neves et al. [1999] Proc Natl Acad Sci U S A 96:11946-11951; Shu et al. [2003] J Neurosci 23:203-212; Steele-Perkins et al. [2005] Mol Cell Biol 25:685-698). These findings suggest that Nfi genes may regulate the substrate over which the commissural axons grow to reach targets in the contralateral hemisphere. However, these genes are also expressed in the cerebral cortex and, thus, it is important to assess whether this expression correlates with a cell-autonomous role in cortical development. Here we detail the protein expression of NFIA and NFIB during embryonic and postnatal mouse forebrain development. We find that both NFIA and NFIB are expressed in the deep cortical layers and subplate prenatally and display dynamic expression patterns postnatally. Both genes are also highly expressed in the developing hippocampus and in the diencephalon. We also find that principally neither NFIA nor NFIB are expressed in callosally projecting neurons postnatally, emphasizing the role for midline glial cell populations in commissure formation. However, a large proportion of laterally projecting neurons express both NFIA and NFIB, indicating a possible cell-autonomous role for these transcription factors in corticospinal neuron development. Collectively, these data suggest that, in addition to regulating the formation of axon guidance substrates, these genes also have cell-autonomous roles in cortical development.
Author Plachez C Campbell CE Lindwall C Moldrich RX Osinski JM Piper M Richards LJ Sunn N Gronostajski RM ID 18335562
TITLE Regulated Expression of ADAM8 (a Disintegrin and Metalloprotease Domain 8) in the Mouse Ovary: Evidence for a Regulatory Role of Luteinizing Hormone, Progesterone Receptor, and Epidermal Growth Factor-Like Growth Factors    
Abstract
ADAM8 (a disintegrin and metalloprotease domain 8) is expressed in immune, neuronal, and bone progenitor cells and is thought to be involved in the tissue-remodeling process. Microarray analyses indicate that Adam8 is a potential target of the progesterone receptor (Pgr) in murine ovary. Further studies document that Adam8 mRNA and protein are expressed in granulosa cells and cumulus cells of periovulatory follicles whereas expression is significantly reduced in Pgr null mice that fail to ovulate. There is a reduced expression in granulosa cells from cultured, in vitro ovulated follicles exposed to inhibitors of progesterone or epidermal growth factor signaling while epiregulin induced its expression in the absence of hCG. In vitro studies with primary mouse granulosa cells document that Adam8 is induced in response to forskolin (Fo) and phorbol ester (PMA) or Fo and Amphiregulin treatment. To understand the transcriptional regulation of the Adam8, we amplified 1 kb of the mouse Adam8 promoter by PCR and subcloned it into a pGL3-luciferase reporter construct. The Adam8 promoter-luciferase constructs are induced by Fo and PMA treatment after transfection into rat granulosa cells, and cotransfection with a PGR-A expression vector further augment basal and Fo/PMA inducibility. Site-specific mutations within the –615/+50 promoter document that a GC-rich region, NF-1 (nuclear factor-1) site, and putative TATA box are critical for Adam8 promoter activation by Fo/PMA. Thus, ADAM8 is expressed in a stage-specific manner and is hormonally regulated in ovulating follicles by the coordinate actions of LH and PGR. To our knowledge, ADAM8 is the first member of the ADAM family shown to be hormonally regulated.
Author Sabine M Mulders Venkataraman Sriraman and JoAnne S Richards Andrea Rittger Jörg W Bartsch Ursula Eichenlaub-Ritter ID 18287572
TITLE Nuclear factor 1 and metal transcription factor-1 synergistically activate the mouse metallothionein-1 gene in response to metal ions.    
Abstract
Metal activation of metallothionein (MT) gene transcription is dependent on the presence of metal regulatory elements (MREs), which are present in five non-identical copies (MREa through MREe) in the promoter of the mouse MT-1 gene, and on the capacity of metal transcription factor-1 (MTF-1) to bind to the MREs in the presence of zinc. We detected a protein, distinct from MTF-1, specifically binding to the MREc region. DNA binding competition experiments using synthetic oligonucleotides and specific anti-NF1 antibodies showed that this protein binds to an NF1 site overlapping the MREc element as well as to a second site upstream of the Sp1a site, and corresponds to NF1 or a related protein. Transfection experiments showed that loss of the two NF1 sites decreased metal-induced MT promoter activity by 55-70% in transiently transfected cells, and almost completely abrogated metal and tert-butylhydroquinone (tBHQ) induction in stably transfected cells. Similarly, expression of an inactive NF1 protein strongly inhibited MT-1 promoter activity. Using synthetic promoters containing NF1 and MRE sites fused to a minimal MT promoter, we showed that these NF1 sites did not confer metal induction but enhanced metal-induced promoter activity. Chromatin immunoprecipitation assays confirmed that NF1 binds to the mouse MT-1 promoter in vivo and showed that NF1 binding is zinc-inducible. In addition, zinc-induced NF1 DNA binding was MTF-1-dependent. Taken together, these studies show that NF1 acts synergistically with MTF-1 to activate the mouse MT-1 promoter in response to metal ions and tBHQ, and contributes to maximal activation of the gene.
Author Larochelle O St-Gelais G Tremblay V Carl S Harrisson JF Labb S ID 18230604
TITLE Growth-dependent repression of human adenine nucleotide translocase-2 (ANT2) transcription: evidence for the participation of Smad and Sp family proteins in the NF1-dependent repressor complex.    
Abstract
Nuclear factor 1 (NF1) binds to two upstream elements of the human adenine nucleotide translocator-2 (ANT-2) promoter and actively represses expression of the gene in growth-arrested diploid skin fibroblasts (Luciakova, Barath, Poliakova, Persson and Nelson 2003. J Biol Chem 278:30624-30633). Chromatin immunoprecipitation and co-immunoprecipitation analysis of nuclear extracts from growth-arrested and growth-activated diploid cells, demonstrate that NF1, when acting as a repressor, is part of a multimeric complex that also includes Smad, and Sp-family proteins. This complex appears to be anchored to both the upstream NF1-repressor elements and the proximal promoter, Sp1-dependent activation elements in growth-arrested cells. In growth-activated cells, the repressor complex dissociates and NF1 leaves the promoter. As revealed by co-immnoprecipitation experiments, NF1/Smad4/Sp3 complexes are present in nuclear extracts only from growth-inhibited cells, suggesting that the growth-state dependent formation of these complexes is not an ANT2 promoter-specific event. Consistent with the role of Smad proteins in the repression complex, TGF-beta can fully repress ANT2 transcription in normally growing fibroblasts. Finally, pull-down experiments of in vitro transcribed/translated NF1 isoforms by GST-Smad and GST-Smad MH fusion proteins indicate direct physical interactions between members of the two families These findings suggest a possible functional relationship between the NF1 and Smad proteins that has not been previously observed.
Author Barath P Kollarovic G Nelson BD Luciakova K ID 18215124
TITLE Two SNPs in the promoter region of the CTLA-4 gene affect binding of transcription factors and are associated with human myasthenia gravis.    
Abstract
OBJECTIVES: The molecular mechanisms underlying the regulation of the CD152 (CTLA-4) gene are largely unknown. Two single nucleotide polymorphisms (SNPs) located in the promoter region are suspected to contribute to the pathogenesis of myasthenia gravis (MG) through regulation of gene expression. SETTING, SUBJECTS AND DESIGN: One hundred and sixty-five unrelated Swedish-Caucasian patients with MG (103 females and 62 males, age 17 to 92 years) and 148 ethnically matched healthy individuals were studied. Gene typing of two SNPs (T/C(-1772) and A/G(-1661)) and quantification of soluble CD152 were performed in the patients. Besides the association studies, the function of these two SNPs is characterized. RESULTS: We present new genetic associations of two SNPs in the CD152 gene with human MG. These SNPs located in the promoter region are involved in transcriptional binding activity for Nuclear Factor I (NF-1) and c/EBPbeta, as demonstrated using chromatin immunoprecipitation and electromobility shift assay. MG patients with the T/C(-1772) polymorphism have elevated levels of sCD152 in sera. CONCLUSIONS: The two SNPs in the promoter region are associated with MG and might cause abnormal alternative splicing and affect the expression of CD152, thereby contributing to the pathogenesis of MG.
Author Pirskanen R Giscombe R Lefvert AK Wang XB ID 18088253
TITLE The interplay between the master transcription factor PU.1 and miR-424 regulates human monocyte/macrophage differentiation.    
Abstract
We describe a pathway by which the master transcription factor PU.1 regulates human monocyte/macrophage differentiation. This includes miR-424 and the transcriptional factor NFI-A. We show that PU.1 and these two components are interlinked in a finely tuned temporal and regulatory circuitry: PU.1 activates the transcription of miR-424, and this up-regulation is involved in stimulating monocyte differentiation through miR-424-dependent translational repression of NFI-A. In turn, the decrease in NFI-A levels is important for the activation of differentiation-specific genes such as M-CSFr. In line with these data, both RNAi against NFI-A and ectopic expression of miR-424 in precursor cells enhance monocytic differentiation, whereas the ectopic expression of NFI-A has an opposite effect. The interplay among these three components was demonstrated in myeloid cell lines as well as in human CD34+ differentiation. These data point to the important role of miR-424 and NFI-A in controlling the monocyte/macrophage differentiation program.
Author Rosa A Ballarino M Bozzoni I. De Angelis FG Guarini A Marchioni M Masella B Peschle C Sorrentino A Sthandier O Fatica A ID 18056638
TITLE Regulation of poly(ADP-ribose) polymerase-1 (PARP-1) gene expression through the post-translational modification of Sp1: a nuclear target protein of PARP-1.    
Abstract
BACKGROUND: Poly(ADP-ribose) polymerase-1 (PARP-1) is a nuclear enzyme that plays critical functions in many biological processes, including DNA repair and gene transcription. The main function of PARP-1 is to catalyze the transfer of ADP-ribose units from nicotinamide adenine dinucleotide (NAD+) to a large array of acceptor proteins, which comprises histones, transcription factors, as well as PARP-1 itself. We have previously demonstrated that transcription of the PARP-1 gene essentially rely on the opposite regulatory actions of two distinct transcription factors, Sp1 and NFI. In the present study, we examined whether suppression of PARP-1 expression in embryonic fibroblasts derived from PARP-1 knockout mice (PARP-1-/-) might alter the expression and/or DNA binding properties of Sp1 and NFI. We also explored the possibility that Sp1 or NFI (or both) may represent target proteins of PARP-1 activity. RESULTS: Expression of both Sp1 and NFI was found to be considerably reduced in PARP-1-/- cells. Co-immunoprecipitation assays revealed that PARP-1 physically interacts with Sp1 in a DNA-independent manner, but neither with Sp3 nor NFI, in PARP-1+/+ cells. In addition, in vitro PARP assays indicated that PARP-1 could catalyze the addition of polymer of ADP-ribose to Sp1, which also translated into a reduction of Sp1 binding to its consensus DNA target site. Transfection of the PARP-1 promoter into both PARP-1+/+ and PARP-1-/- cells revealed that the lack of PARP-1 expression in PARP-1-/- cells also results in a strong increase in PARP-1 promoter activity. This influence of PARP-1 was found to rely on the presence of the Sp1 sites present on the basal PARP-1 promoter as their mutation entirely abolished the increased promoter activity observed in PARP-1-/- cells. Subjecting PARP-1+/+ cells to an oxidative challenge with hydrogen peroxide to increase PARP-1 activity translated into a dramatic reduction in the DNA binding properties of Sp1. However, its suppression by the inhibitor PJ34 improved DNA binding of Sp1 and led to a dramatic increase in PARP-1 promoter function. CONCLUSION: Our results therefore recognized Sp1 as a target protein of PARP-1 activity, the addition of polymer of ADP-ribose to this transcription factor restricting its positive regulatory influence on gene transcription.
Author Gurin SL. Desnoyers S Leclerc S Zaniolo K ID 17961220
TITLE Basic helix-loop-helix factors recruit nuclear factor I to enhance expression of the NaV 1.4 Na+ channel gene.    
Abstract
We have previously shown that the basic helix-loop-helix (bHLH) transcription factors coordinate Na(V) 1.4 Na(+) channel gene expression in skeletal muscle, but the identity of the co-factors they direct is unknown. Using C2C12 muscle cells as a model system, we test the hypothesis that the bHLH factors counteract negative regulation exerted through a repressor E box (-90/-85) by recruiting positive-acting transcription factors to the nucleotides (-135/-57) surrounding the repressor E box. We used electrophoretic mobility shift assays to identify candidate factors that bound the repressor E box or these adjacent regions. Repressor E box-binding factors included the known transcription factor, ZEB/AREB6, and a novel repressor E box-binding factor designated REB. Mutations of the repressor E box that interfere with the binding of these factors prevented repression. The transcription factor, nuclear factor I (NFI), bound immediately upstream and downstream of the repressor E box. Mutation of the NFI-binding sites diminished the ability of myogenin and MRF4 to counteract repression. Based on these observations we suggest that bHLH factors recruit NFI to enhance skeletal muscle Na(+) channel expression.
Author Simmons C Kraner SD Thompson AL Zorc CS Blalock EM Hebert SL ID 17936922
TITLE Phylogenomic analysis of the emergence of GC-rich transcription elements.    
Abstract
We have applied a comparative phylogenomic analysis to study the evolutionary relationships between GC content, CpG-dinucleotide content (CpGs), potential nuclear factor I (NFI) binding sites, and potential Z-DNA forming regions (ZDRs) as representative structural and functional GC-rich genomic elements. Our analysis indicates that CpG and NFI sites emerged with a general accretion of GC-rich sequences downstream of the eukaryotic transcription start site (TSS). Two distinct classes of ZDRs are observed at different locations proximal to the eukaryotic TSS. A robust CA/TG class of ZDRs was seen to emerge upstream of the TSS and independently of GC content, CpGs, and NFIs, whereas a second, weaker CG type appears to have evolved along with these downstream GC-rich elements. Taken together, the results provide a model for how GC-rich structural and functional eukaryotic markers emerge relative to each other, and indicate two distinct transition points for their occurrence: the first at the pro/eukaryotic boundary, and the second at or near the amniotic boundary.
Author DeYoung J Ho PS Sandor M Khuu P ID 17925442
TITLE Involvement of nuclear factor I transcription/replication factor in the early stage of chondrocytic differentiation.    
Abstract
Gene-trap mutagenesis is based on the notion that the random insertion of a trapping vector may disturb the function of inserted genes. To identify the genes involved in chondrocytic differentiation, we applied this method to a murine mesenchymal cell line, ATDC5, which differentiate into mature chondrocytes in the presence of insulin, and isolated a clone in which the gene encoding a transcription/replication factor, nuclear factor I-B (NFIB), was trapped. In this particular clone, named #7-57, the trap vector pPT1-geo was inserted into intron 6 of the NFIB gene in one of the alleles. As a result, both wild-type NFIB and a mutant protein lacking the carboxyl-terminal transactivation/repression domain were expressed in the clone. Immunoprecipitation/Western blotting confirmed the interaction between wild-type NFIB and the truncated protein derived from the trapped allele, suggesting that the mutant protein formed a heterodimer with wild-type NFI proteins. When cultured in the differentiation medium, #7-57 exhibited impaired nodule formation and less accumulation of cartilageous matrices compared with the parental ATDC5 cells. In addition, the expression of marker genes for proliferating chondrocytes, including type II collagen (Col2a1), matrillin-1, and PTHrP, was reduced in the clone. The expression of SOX9 was also slightly decreased in the clone #7-57 compared with the parental cells. The overexpression of wild-type NFIB in parental ATDC5 cells resulted in the increased expression of Col2a1, and a series of reporter assays using a Col2a1 promoter/enhancer-luciferase construct demonstrated the transcriptional regulation of the gene by NFIB and the dominant-negative effect of the truncated mutant derived from the trapped allele. Interestingly, mutation in the SOX9-binding site in the 48-bp cis-element located in intron 1 failed to abolish the transactivation of Col2a1 gene by NFIB, suggesting that NFI regulates the transactivation of Col2a1, at least in part, independently of SOX9. These results indicate the critical roles of NFI family transcription/replication factors in the early stage of chondrocytic differentiation.
Author Ihara-Watanabe M Kimata M Kogo M Koshimizu T Michigami T Okada T Ozono K Sakai N Tachikawa K Uchihashi T ID 17904922
TITLE Nfic gene disruption inhibits differentiation of odontoblasts responsible for root formation and results in formation of short and abnormal roots in mice.    
Abstract
BACKGROUND: Nuclear factor I genes play an important role in the development of the brain, lung, and roots of teeth. We had reported that Nfic-deficient mice form normal crowns, but abnormal roots of molar teeth. However, the mechanism by which the disruption of Nfic gene causes abnormal root formation remains unknown. METHODS: To understand this mechanism, the root formation in Nfic-deficient mice was examined and compared to that of wild-type mice by morphological, immunohistochemical, and in situ hybridization analyses. RESULTS: Nfic-deficient mice formed normal Hertwig's epithelial root sheath (HERS) but severely disrupted odontoblast differentiation, leading to the formation of aberrant odontoblasts in the early stage of root formation. They became dissociated and polygonal in shape, lost their orientation and polarity, and did not express dentin sialophosphoprotein. The abnormal roots contained trapped aberrant odontoblasts, thereby resembling osteodentin in overall morphology. No osteoclasts were associated with abnormal roots. Further, the abnormal roots exhibited a decreased number of cementoblasts and cementum formation on the root surface. CONCLUSIONS: The loss of Nfic did not interfere with the formation of HERS, but it caused disrupted odontoblast differentiation, which resulted in the formation of short and abnormal roots, and decreased cementum. This finding suggests that root dentin is required for normal cementum formation. Therefore, Nfic may be a key regulator of root odontoblast differentiation and root formation.
Author Park JC Cho MI Herr Y Kim HJ Gronostajski RM ID 17760551
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