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Puzianowska-Kuznicka M, Kuryłowicz A, Walkiewicz D, Borkowska J, Owczarz M, Olszanecka-Glinianowicz M, Wieczorowska-Tobis K, Skalska A, Szybalska A, Mossakowska M. Obesity Paradox in Caucasian Seniors: Results of the PolSenior Study. J Nutr Health Aging 2019; 23:796-804. [PMID: 31641728 PMCID: PMC6800404 DOI: 10.1007/s12603-019-1257-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 03/19/2019] [Indexed: 01/29/2023]
Abstract
OBJECTIVES To investigate the influence of overweight and obesity on general performance and mortality in seniors. DESIGN Cross-sectional multidisciplinary study on ageing of the Polish population. SETTING Community-dwelling individuals aged 65 years or older, selected using three-stage stratified, proportional draw. PARTICIPANTS 4944 Polish Caucasian seniors, aged 65 years or older recruited between October 2007 and October 2010. MEASUREMENTS All study subjects underwent measurement of body mass index (BMI), waist circumference (WC), and arm circumference (AC). The physical and cognitive performance was evaluated using the Katz Activities of Daily Living (ADL) score and Mini-Mental State Examination (MMSE), respectively. Morbidity data were obtained from a medical questionnaire. Mortality data were obtained from the Population Register of Poland between October 2015 and October 2018. RESULTS Increasing age was associated with a decreased prevalence of obesity (all p<0.001). Higher BMI, WC and AC values were associated with higher ADL and MMSE scores (all p<0.001). On multivariate analysis, all three body measurements in women remained independent predictors of the ADL score (BMI p=0.002, WC p=0.005, AC p<0.001) and MMSE score (p<0.001, p=0.003, p<0.001). In men, physical functioning was associated with AC (p=0.003), and cognitive status was associated with AC (p<0.001) and BMI (p=0.013). There was no association between general obesity, abdominal obesity, or AC with several aging-related adverse conditions. Kaplan-Meier survival curves showed that overweight and obesity were associated with the lowest mortality. On multivariate analysis, BMI and AC values remained independent predictors of mortality. In successfully aging individuals, neither BMI, WC, nor AC remained such predictors. CONCLUSIONS Overweight and obesity in Caucasian seniors are not associated with deterioration of physical and cognitive function or with increased mortality.
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Affiliation(s)
- M Puzianowska-Kuznicka
- Monika Puzianowska-Kuznicka, MD, PhD, Department of Human Epigenetics, Mossakowski Medical Research Centre, PAS, Pawinskiego 5, 02-106 Warsaw, Poland; phone/fax: +48 22 6086591;
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Styszynski A, Mossakowska M, Chudek J, Puzianowska-Kuznicka M, Klich-Raczka A, Neumann-Podczaska A, Szybalska A, Wieczorowska-Tobis K. Prevalence of anemia in relation to socio-economic factors in elderly Polish population: the results of PolSenior study. J Physiol Pharmacol 2018; 69:75-81. [PMID: 29769423 DOI: 10.26402/jpp.2018.1.08] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 02/15/2018] [Indexed: 11/03/2022]
Abstract
Anemia is an independent risk factor for functional decline and mortality among older adults. Since mild anemia in older people is often under-diagnosed and ignored, its prevalence needs precise determination and recognition of predisposing factors. None of the previous studies based on the data obtained from the representative elderly population identified the influence of socio-economic factors on the prevalence of anemia. PolSenior was a cross-sectional population-based study performed on the nationally representative sample of Polish seniors. Complete blood count was assessed in 4003 respondents aged 65 years or above (1910 women) divided into six five-year cohorts and a reference group of 622 people aged 55 - 59 years (333 women). Anemia was defined based on the WHO criteria: Hb < 12.0 g/dL in women and Hb < 13.0 g/dL in men. The following socio-economic factors were evaluated through the multiple logistic regression analysis: education level, marital status, place of residence, living arrangements and self-reported poverty. The prevalence of anemia in older persons standardized for the population was 10.8% (17.4% of the study group) and was more frequent in men than in women (20.8% versus 13.6%). The frequency of anemia progressed with age from 5.3% in the youngest to 37.7% in the oldest cohort, and the progression was higher in men. The multiple logistic regression analysis revealed the link between anemia and age in both genders, as well as unmarried status and urban dwelling in men. When age was not taken into account, logistic regression showed the link between anemia and unmarried status, urban place of residence (both genders), and low level of education (women only). Among seniors, those poorly educated, unmarried and city inhabitants require intense screening for anemia.
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Affiliation(s)
- A Styszynski
- Laboratory for Geriatric Medicine, Department of Palliative Medicine, Poznan University of Medical Sciences, Poznan, Poland.
| | - M Mossakowska
- International Institute of Molecular and Cell Biology in Warsaw, Warsaw, Poland
| | - J Chudek
- Department of Internal Medicine and Oncological Chemotherapy, Medical Faculty in Katowice, Medical University of Silesia, Katowice, Poland
| | - M Puzianowska-Kuznicka
- Department of Human Epigenetics, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland.,Department of Geriatrics and Gerontology, Centre of Postgraduate Medical Education, Warsaw, Poland
| | - A Klich-Raczka
- Department of Internal Medicine and Gerontology, Jagiellonian University, Collegium Medicum, Cracow, Poland
| | - A Neumann-Podczaska
- Department of Geriatrics and Gerontology, Poznan University of Medical Sciences, Poznan, Poland
| | - A Szybalska
- International Institute of Molecular and Cell Biology in Warsaw, Warsaw, Poland
| | - K Wieczorowska-Tobis
- Laboratory for Geriatric Medicine, Department of Palliative Medicine, Poznan University of Medical Sciences, Poznan, Poland
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Kurylowicz A, Owczarz M, Polosak J, Jonas MI, Lisik W, Jonas M, Chmura A, Puzianowska-Kuznicka M. SIRT1 and SIRT7 expression in adipose tissues of obese and normal-weight individuals is regulated by microRNAs but not by methylation status. Int J Obes (Lond) 2016; 40:1635-1642. [PMID: 27480132 DOI: 10.1038/ijo.2016.131] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 05/30/2016] [Accepted: 06/25/2016] [Indexed: 12/27/2022]
Abstract
BACKGROUND/OBJECTIVE Given their importance in the regulation of metabolism, sirtuins (SIRTs) constitute promising subjects of research on the pathogenesis of obesity and the metabolic syndrome. The aim of this study was to assess whether obesity in humans is associated with changes in the expression of SIRT genes in adipose tissue and whether epigenetic mechanisms, DNA methylation and microRNA (miRNA) interference, mediate in this phenomenon. SUBJECTS/METHODS The expression of SIRTs and of SIRT1 and SIRT7 mRNA-interacting miRNAs was evaluated by real-time PCR in visceral adipose tissue (VAT) and subcutaneous adipose tissue (SAT) of 58 obese (body mass index (BMI) >40 kg m-2) and 31 normal-weight (BMI 20-24.9 kg m-2) individuals. The methylation status of SIRTs was studied by the methylation-sensitive digestion/real-time PCR method. RESULTS SIRT1 mRNA levels were lower in adipose tissues of obese patients than of normal-weight controls (VAT: P=0.0002, SAT: P=0.008). In contrast, expression of SIRT7 was higher in adipose tissues of obese patients than in the control group (VAT: P=0.001, SAT: P=0.008). The mean methylation of the SIRT1 and SIRT7 CpG islands was similar in tissues with high and low expression of these genes, and there was no correlation between the level of expression and the level of methylation. On the other hand, expression of SIRT1 in VAT of obese subjects correlated negatively with the expression of miR-22-3p (P<0.0001, rs=-0.514), miR-34a-5p (P=0.01, rs=-0.326) and miR-181a-3p (P<0.0001, rs=-0.536). In turn, expression of SIRT7 in VAT of slim individuals correlated negatively with the expression of miR-125a-5p (P=0.003, rs=-0.562) and miR-125b-5p (P=0.018, rs=-0.460). CONCLUSIONS We observed obesity-associated downregulation of SIRT1 and upregulation of SIRT7 mRNA levels that were not associated with the methylation status of their promoters. We found a negative correlation between mRNA levels of SIRT1 in VAT of obese individuals and SIRT7 in VAT of the normal-weight subjects and expression of the relevant miRNAs.
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Affiliation(s)
- A Kurylowicz
- Department of Human Epigenetics, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - M Owczarz
- Department of Human Epigenetics, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - J Polosak
- Department of Human Epigenetics, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - M I Jonas
- Department of Human Epigenetics, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - W Lisik
- Department of General and Transplantation Surgery, Medical University of Warsaw, Warsaw, Poland
| | - M Jonas
- Department of General and Transplantation Surgery, Medical University of Warsaw, Warsaw, Poland
| | - A Chmura
- Department of General and Transplantation Surgery, Medical University of Warsaw, Warsaw, Poland
| | - M Puzianowska-Kuznicka
- Department of Human Epigenetics, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland.,Department of Geriatrics and Gerontology, Medical Centre of Postgraduate Education, Warsaw, Poland
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Polosak J, Owczarz M, Roszkowska-Gancarz M, Puzianowska-Kuznicka M. Expression of the DNA-repair genes ERCC3 (XPB) and XPC is significantly decreased in blood mononuclear cells of aged humans. Eur Geriatr Med 2013. [DOI: 10.1016/j.eurger.2013.07.320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Budzinska M, Owczarz M, Roszkowska-Gancarz M, Polosak J, Puzianowska-Kuznicka M. Aging of healthy humans is associated with a decreased expression of the IGF-1R and FOXO1 genes and with altered expression of their interacting miRNAs. Eur Geriatr Med 2013. [DOI: 10.1016/j.eurger.2013.07.329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Puzianowska-Kuznicka M, Nauman A, Madej A, Tanski Z, Cheng S, Nauman J. Expression of thyroid hormone receptors is disturbed in human renal clear cell carcinoma. Cancer Lett 2000; 155:145-52. [PMID: 10822129 DOI: 10.1016/s0304-3835(00)00416-x] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Human renal clear cell carcinoma (RCCC) accounts for up to 2% of human cancers. To find out if thyroid hormone (T3) and its receptors (TRs) play a role in tumorigenesis of RCCC, the expression of TRs was evaluated on mRNA and protein level. It was found that TRalpha (both alpha1 and alpha2) mRNA amount was significantly decreased in tumors while compared with healthy kidney tissue, and this decrease was deepest in G1 (well differentiated) RCCCs. In contrast, TRalpha1 protein was 1.6x overexpressed in tumors. TRbeta1 mRNA amount was overexpressed in 30% and significantly decreased in 70% of examined tumors. On the protein level, TRbeta1 amount was 1.7x lower in tumors than in healthy controls.
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Affiliation(s)
- M Puzianowska-Kuznicka
- Department of Endocrinology, Medical Research Center, Polish Academy of Sciences, Warsaw, Poland
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Damjanovski S, Puzianowska-Kuznicka M, Ishuzuya-Oka A, Shi YB. Differential regulation of three thyroid hormone-responsive matrix metalloproteinase genes implicates distinct functions during frog embryogenesis. FASEB J 2000; 14:503-10. [PMID: 10698965 DOI: 10.1096/fasebj.14.3.503] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Matrix metalloproteinases (MMPs) are a family of Zn(2+)-dependent extracellular proteases capable of degrading various proteinaceous components of the extracellular matrix (ECM). They are expressed in developmental and pathological processes such as postlactation mammary gland involution and tumor metastasis. Relatively few studies have been carried out to investigate the function of MMPs during embryogenesis and postembryonic organ development. Using Xenopus development as a model system, we and others have previously isolated three MMP genes as thyroid hormone response genes. They have distinct temporal and organ-specific regulations during thyroid hormone-dependent metamorphosis. We demonstrate here that three MMPs-stromelysin-3 (ST3), collagenases-3 (Col3), and collagenases-4 (Col4)-also have distinct spatial and temporal expression profiles during embryogenesis. Consistent with earlier suggestions that ST3 is a direct thyroid hormone response gene whereas Col3 and Col4 are not, we show that precocious overexpression of thyroid hormone receptors in the presence of thyroid hormone lead to increased expression of ST3, but not Col3. Furthermore, our whole-mount in situ hybridizations reveal a tight but distinct association of individual MMPs with tissue remodeling in different regions of the animal during embryogenesis. These results suggest that ST3 is likely to play a role in ECM remodeling that facilitate apoptotic tissue remodeling or resorption, whereas Col3 and Col4 appear to participate in connective tissue degradation during development.
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Affiliation(s)
- S Damjanovski
- Laboratory of Molecular Embryology, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland, 20892, USA
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Puzianowska-Kuznicka M, Damjanovski S, Shi YB. Both thyroid hormone and 9-cis retinoic acid receptors are required to efficiently mediate the effects of thyroid hormone on embryonic development and specific gene regulation in Xenopus laevis. Mol Cell Biol 1997; 17:4738-49. [PMID: 9234730 PMCID: PMC232326 DOI: 10.1128/mcb.17.8.4738] [Citation(s) in RCA: 79] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Tissue culture transfection and in vitro biochemical studies have suggested that heterodimers of thyroid hormone receptors (TRs) and 9-cis retinoic acid receptors (RXRs) are the likely in vivo complexes that mediate the biological effects of thyroid hormone, 3,5,3'-triiodothyronine (T3). However, direct in vivo evidence for such a hypothesis has been lacking. We have previously reported a close correlation between the coordinated expression of TR and RXR genes and tissue-dependent temporal regulation of organ transformations during Xenopus laevis metamorphosis. By introducing TRs and RXRs either individually or together into developing Xenopus embryos, we demonstrate here that RXRs are critical for the developmental function of TRs. Precocious expression of TRs and RXRs together but not individually leads to drastic, distinct embryonic abnormalities, depending upon the presence or absence of T3, and these developmental effects require the same receptor domains as those required for transcriptional regulation by TR-RXR heterodimers. More importantly, the overexpressed TR-RXR heterodimers faithfully regulate endogenous T3 response genes that are normally regulated by T3 only during metamorphosis. That is, they repress the genes in the absence of T3 and activate them in the presence of the hormone. On the other hand, the receptors have no effect on a retinoic acid (RA) response gene. Thus, RA- and T3 receptor-mediated teratogenic effects in Xenopus embryos occur through distinct molecular pathways, even though the resulting phenotypes have similarities.
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Affiliation(s)
- M Puzianowska-Kuznicka
- Laboratory of Molecular Embryology, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20892-5431, USA
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Abstract
Thyroid hormone plays a causative role during frog metamorphosis, and its effect is mediated by thyroid hormone receptors (TRs). To investigate the function of Xenopus TRs, we have recently developed a thyroid hormone dependent in vivo transcription system by introducing TRs and RXRs (9-cis-retinoic acid receptors) into Xenopus oocytes. Interestingly, using this system, we have found that the TRalphaB cloned previously is defective in transcriptional activation compared with TRalphaA. In vitro DNA binding experiments show that TRalphaB.RXR heterodimers have drastically reduced affinity for a thyroid hormone response element. Site-directed mutagenesis shows that two of the seven amino acid residues that differ between TRalphaA and TRalphaB are responsible for the defect in TRalphaB function. These two residues affect the DNA binding by both TR.RXR heterodimers and TR homodimers. In contrast, heterodimer formation with RXRs is not affected as demonstrated by coimmunoprecipitation and dominant-transcriptional inhibition experiments. By cDNA and genomic DNA sequence analysis, we have demonstrated that the residues, which affect TRalphaB function when mutated, are identical between the wild type TRalphaB and TRalphaA. Thus, our experiments have discovered the first amphibian TR mutant. The DNA binding and transcription activation functions of the mutant are discussed in relation to the recently published TR crystal structure.
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Affiliation(s)
- M Puzianowska-Kuznicka
- Laboratory of Molecular Embryology, NICHHD, National Institutes of Health, Bethesda, Maryland 20892-5430, USA.
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Shi YB, Wong J, Puzianowska-Kuznicka M. Thyroid Hormone Receptors: Mechanisms of Transcriptional Regulation and Roles during Frog Development. J Biomed Sci 1996; 3:307-318. [PMID: 11725112 DOI: 10.1007/bf02257960] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Thyroid hormone receptors (TRs) are members of the fast growing superfamily of nuclear hormone receptors. They are dual function transcription factors. In the unliganded form, they repress basal transcription of their target genes. The presence of thyroid hormone leads to not only the relief of this repression but also a strong transcriptional activation above the basal level. Mechanistically, thyroid hormone receptors appear to function as heterodimers with 9-cis-retinoic acid receptors both in the absence and in the presence of thyroid hormone. Recent studies indicate that the heterodimers can interact with thyroid hormone response elements in chromatin independently of thyroid hormone and that the receptors have evolved to function efficiently in a chromatin environment, utilizing chromatin assembly to effectively repress transcription in the absence of thyroid hormone and overcoming the repression by chromatin by inducing chromatin disruption in the presence of the hormone. In addition, a number of TR-interacting proteins have been isolated. How these proteins participate in the regulation of transcription by TRs remains to be elucidated. Independent of the exact mechanisms of action, the developmental expression of thyroid hormone receptor genes during amphibian metamorphosis suggests that both the repression and activation functions of the receptors are important for proper control of the temporal and tissue-specific regulation of metamorphosis. Copyright 1996 S. Karger AG, Basel
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Affiliation(s)
- Y.-B. Shi
- Laboratory of Molecular Embryology, NICHD/NIH, Bethesda, Md., USA
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Shi YB, Wong J, Puzianowska-Kuznicka M, Stolow MA. Tadpole competence and tissue-specific temporal regulation of amphibian metamorphosis: roles of thyroid hormone and its receptors. Bioessays 1996; 18:391-9. [PMID: 8639162 DOI: 10.1002/bies.950180509] [Citation(s) in RCA: 124] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Amphibian metamorphosis is a post-embryonic process that systematically transforms different tissues in a tadpole. Thyroid hormone plays a causative role in this complex process by inducing a cascade of gene regulation. While natural metamorphosis does not occur until endogenous thyroid hormone has been synthesized, tadpoles are competent to respond to exogenous thyroid hormone shortly after hatching. In addition, even though the metamorphic transitions of individual organs are all controlled by thyroid hormone, each occurs at distinct developmental stages. Recent molecular studies suggest that this competence of premetamorphic tadpoles to respond to the hormone and the developmental stage-dependent regulation of tissue-specific transformations are determined in part by the levels of thyroid hormone receptors and the concentrations of cellular free thyroid hormone. In addition, at least two genes, encoding a cytosolic thyroid hormone binding protein and a 5-deiodinase, respectively, are likely to be critical players in regulating cellular free thyroid hormone concentrations. This review discusses how all of these molecular components coordinate to induce amphibian metamorphosis in a correct spatial and temporal manner. These studies provide us with general clues as to how and why tissues become competent to respond to hormonal signals.
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Affiliation(s)
- Y B Shi
- Laboratory of Molecular Embryology, National Institute of Child Health and Human Development, National Institute of Health, Bethesda, MD 20892, USA
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Abstract
Nuclear factor I (NFI) family members are transcription factors that are believed to also participate in DNA replication. We have cloned two Xenopus laevis NFIs that are up-regulated by thyroid hormone. They are 84-95% identical to their counterparts in birds and mammals. In contrast, the two Xenopus NFIs are much less homologous to each other, sharing only 58% homology, which largely resides in the DNA binding domain at the amino terminus. However, both NFIs can bind to a consensus NFI binding site and activate the transcription of a promoter bearing the site. Northern blot reveals that both NFI genes are regulated in tissue- and developmental stage-dependent manners. They are first activated, independently of thyroid hormone, to low levels at stages 23/24, around the onset of larval organogenesis. After stage 54, their mRNA levels are dramatically upregulated by endogenous thyroid hormone, and high levels of their expression correlate with organ-specific metamorphosis. Furthermore, gel mobility shift assay indicates that the NFI proteins are present in different organs and that their levels are regulated similarly to the mRNA levels. These results strongly suggest that NFIs play important roles during postembryonic organ development, in contrast to the general belief that NFIs are ubiquitous factors.
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Affiliation(s)
- M Puzianowska-Kuznicka
- Laboratory of Molecular Embryology, NICHD, National Institutes of Health, Bethesda, Maryland 20892-5430, USA
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