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Mauduit O, Aure MH, Delcroix V, Basova L, Srivastava A, Umazume T, Mays JW, Bellusci S, Tucker AS, Hajihosseini MK, Hoffman MP, Makarenkova HP. A mesenchymal to epithelial switch in Fgf10 expression specifies an evolutionary-conserved population of ionocytes in salivary glands. Cell Rep 2022; 39:110663. [PMID: 35417692 PMCID: PMC9113928 DOI: 10.1016/j.celrep.2022.110663] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 01/21/2022] [Accepted: 03/21/2022] [Indexed: 12/21/2022] Open
Abstract
Fibroblast growth factor 10 (FGF10) is well established as a mesenchyme-derived growth factor and a critical regulator of fetal organ development in mice and humans. Using a single-cell RNA sequencing (RNA-seq) atlas of salivary gland (SG) and a tamoxifen inducible Fgf10CreERT2:R26-tdTomato mouse, we show that FGF10pos cells are exclusively mesenchymal until postnatal day 5 (P5) but, after P7, there is a switch in expression and only epithelial FGF10pos cells are observed after P15. Further RNA-seq analysis of sorted mesenchymal and epithelial FGF10pos cells shows that the epithelial FGF10pos population express the hallmarks of ancient ionocyte signature Forkhead box i1 and 2 (Foxi1, Foxi2), Achaete-scute homolog 3 (Ascl3), and the cystic fibrosis transmembrane conductance regulator (Cftr). We propose that epithelial FGF10pos cells are specialized SG ionocytes located in ducts and important for the ionic modification of saliva. In addition, they maintain FGF10-dependent gland homeostasis via communication with FGFR2bpos ductal and myoepithelial cells.
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Affiliation(s)
- Olivier Mauduit
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Marit H Aure
- Matrix and Morphogenesis Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892, USA
| | - Vanessa Delcroix
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Liana Basova
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Amrita Srivastava
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Takeshi Umazume
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Jacqueline W Mays
- Oral Immunobiology Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892, USA
| | - Saverio Bellusci
- Cardio-Pulmonary Institute (CPI) and Department of Pulmonary and Critical Care Medicine and Infectious Diseases, Universities of Giessen and Marburg Lung Center (UGMLC), The German Center for Lung Research (DZL), Justus-Liebig University Giessen, 35392 Giessen, Germany
| | - Abigail S Tucker
- Centre for Craniofacial and Regenerative Biology, King's College London, London WC2R 2LS, UK
| | | | - Matthew P Hoffman
- Matrix and Morphogenesis Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892, USA.
| | - Helen P Makarenkova
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA.
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Valizadeh M, Alimohammadi F, Azarm A, Pourtaghi Z, Derakhshan barjoei MM, Sabri H, Jafari A, Arabpour Z, Razavi P, Mokhtari M, Deravi N. Uses of soybean isoflavonoids in dentistry: A literature review. J Dent Sci 2021. [DOI: 10.1016/j.jds.2021.11.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Zhang Y, O'Brien WG, Zhao Z, Lee CC. 5'-adenosine monophosphate mediated cooling treatment enhances ΔF508-Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) stability in vivo. J Biomed Sci 2015; 22:72. [PMID: 26335336 PMCID: PMC4559075 DOI: 10.1186/s12929-015-0178-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Accepted: 08/20/2015] [Indexed: 12/26/2022] Open
Abstract
Background Gene mutations that produce misprocessed proteins are linked to many human disorders. Interestingly, some misprocessed proteins retained their biological function when stabilized by low temperature treatment of cultured cells in vitro. Here we investigate whether low temperature treatment in vivo can rescue misfolded proteins by applying 5’-AMP mediated whole body cooling to a Cystic Fibrosis (CF) mouse model carrying a mutant cystic fibrosis transmembrane conductance regulator (CFTR) with a deletion of the phenylalanine residue in position 508 (ΔF508-CFTR). Low temperature treatment of cultured cells was previously shown to be able to alleviate the processing defect of ΔF508-CFTR, enhancing its plasma membrane localization and its function in mediating chloride ion transport. Results Here, we report that whole body cooling enhanced the retention of ΔF508-CFTR in intestinal epithelial cells. Functional analysis based on β-adrenergic dependent salivary secretion and post-natal mortality rate revealed a moderate but significant improvement in treated compared with untreated CF mice. Conclusions Our findings demonstrate that temperature sensitive processing of mutant proteins can be responsive to low temperature treatment in vivo.
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Affiliation(s)
- Yueqiang Zhang
- Department of Biochemistry and Molecular Biology, University of Texas Health Science Center at Houston, Houston, TX, 77030, USA
| | - William G O'Brien
- Department of Biochemistry and Molecular Biology, University of Texas Health Science Center at Houston, Houston, TX, 77030, USA
| | - Zhaoyang Zhao
- Department of Biochemistry and Molecular Biology, University of Texas Health Science Center at Houston, Houston, TX, 77030, USA
| | - Cheng Chi Lee
- Department of Biochemistry and Molecular Biology, University of Texas Health Science Center at Houston, Houston, TX, 77030, USA.
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da Silva Modesto KB, de Godói Simões JB, de Souza AF, Damaceno N, Duarte DA, Leite MF, de Almeida ER. Salivary flow rate and biochemical composition analysis in stimulated whole saliva of children with cystic fibrosis. Arch Oral Biol 2015; 60:1650-4. [PMID: 26351748 DOI: 10.1016/j.archoralbio.2015.08.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2015] [Revised: 08/03/2015] [Accepted: 08/10/2015] [Indexed: 01/15/2023]
Abstract
OBJECTIVE It is recognized that cystic fibrosis (CF) patients present a risk for oral diseases, since it affects exocrine glands, and the treatment consists of a carbohydrate-rich diet. Recognizing the protective function of saliva on maintaining oral health, the aim of the study was to evaluate salivary parameters in stimulated whole saliva from children with CF. METHODS A case-control study was conducted comparing stimulated whole saliva of healthy (n=28; control group) and CF children (n=21; experimental group). Salivary flow rate, initial pH, buffer capacity (total and in each range of pH), total protein and sialic acid (total, free, and conjugated) concentration, α-amylase and salivary peroxidase activities were evaluated. Data were compared by two-tailed Student t test (95% CI; p ≤ 0.05). RESULTS CF patients presented a significant reduction in salivary parameters compared with the control group (p ≤ 0.05): salivary flow rate (36%), buffer capacity (pH range from 6.9 to 6.0), sialic acid concentration (total 75%, free 61%, and conjugated 83%); α-amylase and salivary peroxidase activities (55%). Additionally, a significant increase in total protein concentration (180%) of stimulated whole saliva from CF patients was verified compared with the control group (p ≤ 0.05). CONCLUSION Children with CF presented significant changes in salivary composition, including salivary flow rate, buffering capacity and protective proteins of the oral cavity, compared with children without CF.
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Affiliation(s)
| | | | - Amanda Ferreira de Souza
- Department of Pediatric Dentistry at the University Cruzeiro do Sul, São Paulo, SP 08060-070, Brazil
| | - Neiva Damaceno
- Department of Pediatrics/Pulmonology, School of Medical Sciences of Santa Casa de São Paulo, SP 01221-020, Brazil
| | - Danilo Antonio Duarte
- Department of Pediatric Dentistry at the University Cruzeiro do Sul, São Paulo, SP 08060-070, Brazil
| | - Mariana Ferreira Leite
- Department of Pediatric Dentistry at the University Cruzeiro do Sul, São Paulo, SP 08060-070, Brazil.
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Dhooghe B, Bouckaert C, Capron A, Wallemacq P, Leal T, Noel S. Resveratrol increases F508del-CFTR dependent salivary secretion in cystic fibrosis mice. Biol Open 2015; 4:929-36. [PMID: 26092868 PMCID: PMC4571083 DOI: 10.1242/bio.010967] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Cystic fibrosis (CF) is a fatal genetic disease associated with widespread exocrine gland dysfunction. Studies have suggested activating effects of resveratrol, a naturally-occurring polyphenol compound with antioxidant and anti-inflammatory properties, on CF transmembrane conductance regulator (CFTR) protein function. We assayed, in F508del-CFTR homozygous (CF) and in wild-type mice, the effect of resveratrol on salivary secretion in basal conditions, in response to inhibition by atropine (basal β-adrenergic-dependent component) and to stimulation by isoprenaline (CFTR-dependent component). Both components of the salivary secretion were smaller in CF mice than in controls. Two hours after intraperitoneal administration of resveratrol (50 mg/kg) dissolved in DMSO, the compound was detected in salivary glands. As in both CF and in wild-type mice, DMSO alone increased the response to isoprenaline in males but not in females, the effect of resveratrol was only measured in females. In wild-type mice, isoprenaline increased secretion by more than half. In CF mice, resveratrol rescued the response to isoprenaline, eliciting a 2.5-fold increase of β-adrenergic-stimulated secretion. We conclude that the salivary secretion assay is suitable to test DMSO-soluble CFTR modulators in female mice. We show that resveratrol applied in vivo to mice reaches salivary glands and increases β-adrenergic secretion. Immunolabelling of CFTR in human bronchial epithelial cells suggests that the effect is associated with increased CFTR protein expression. Our data support the view that resveratrol is beneficial for treating CF. The salivary secretion assay has a potential application to test efficacy of novel CF therapies.
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Affiliation(s)
- Barbara Dhooghe
- Louvain Centre for Toxicology and Applied Pharmacology, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Brussels B1200, Belgium
| | - Charlotte Bouckaert
- Louvain Centre for Toxicology and Applied Pharmacology, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Brussels B1200, Belgium
| | - Arnaud Capron
- Clinical Chemistry Department, Cliniques Universitaires St. Luc, Université Catholique de Louvain, Brussels B1200, Belgium
| | - Pierre Wallemacq
- Clinical Chemistry Department, Cliniques Universitaires St. Luc, Université Catholique de Louvain, Brussels B1200, Belgium
| | - Teresinha Leal
- Louvain Centre for Toxicology and Applied Pharmacology, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Brussels B1200, Belgium
| | - Sabrina Noel
- Louvain Centre for Toxicology and Applied Pharmacology, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Brussels B1200, Belgium
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Rayyan E, Polito S, Leung L, Bhakta A, Kang J, Willey J, Mansour W, Drumm ML, Al-Nakkash L. Effect of genistein on basal jejunal chloride secretion in R117H CF mice is sex and route specific. Clin Exp Gastroenterol 2015; 8:77-87. [PMID: 25674010 PMCID: PMC4321419 DOI: 10.2147/ceg.s72111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Cystic fibrosis (CF) results from the loss or reduction in function of the CFTR (cystic fibrosis transmembrane conductance regulatory protein) chloride channel. The third most common CFTR mutation seen clinically is R117H. Genistein, a naturally occurring phytoestrogen, is known to stimulate CFTR function in vitro. We aimed to determine whether route of administration of genistein could mediate differential effects in R117H male and female CF mice. Mice were fed (4 weeks) or injected subcutaneously (1 week) with the following: genistein 600 mg/kg diet (600Gd); genistein-free diet (0Gd); genistein injection 600 mg/kg body weight (600Gi); dimethyl sulfoxide control (0Gi). In male R117H mice fed 600Gd, basal short circuit current (Isc) was unchanged. In 600Gd-fed female mice, there was a subgroup that demonstrated a significant increase in basal Isc (53.14±7.92 μA/cm(2), n=6, P<0.05) and a subgroup of nonresponders (12.05±6.59 μA/cm(2), n=4), compared to 0Gd controls (29.3±6.5 μA/cm(2), n=7). In R117H mice injected with 600Gi, basal Isc was unchanged in both male and female mice compared to 0Gi controls. Isc was measured in response to the following: the adenylate cyclase activator forskolin (10 μM, bilateral), bumetanide (100 μM, basolateral) to indicate the Cl(-) secretory component, and acetazolamide (100 μM, bilateral) to indicate the HCO3 (-) secretory component; however, there was no effect of genistein (diet or injection) on any of these parameters. Jejunal morphology (ie, villi length, number of goblet cells per villus, crypt depth, and number of goblet cells per crypt) in R117H mice suggested no genistein-mediated difference among the groups. Serum levels of genistein were significantly elevated, compared to respective controls, by either 600Gd (equally elevated in males and females) or 600Gi (elevated more in females versus males). These data suggest a sex-dependent increase in basal Isc of R117H mice and that the increase is also specific for route of administration.
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Affiliation(s)
- Esa Rayyan
- Department of Physiology, Arizona College of Osteopathic Medicine, Midwestern University, Glendale, AZ, USA
| | - Sarah Polito
- Department of Physiology, Arizona College of Osteopathic Medicine, Midwestern University, Glendale, AZ, USA
| | - Lana Leung
- Department of Physiology, Arizona College of Osteopathic Medicine, Midwestern University, Glendale, AZ, USA
| | - Ashesh Bhakta
- Department of Physiology, Arizona College of Osteopathic Medicine, Midwestern University, Glendale, AZ, USA
| | - Jonathan Kang
- Department of Physiology, Arizona College of Osteopathic Medicine, Midwestern University, Glendale, AZ, USA
| | - Justin Willey
- Department of Physiology, Arizona College of Osteopathic Medicine, Midwestern University, Glendale, AZ, USA
| | - Wasim Mansour
- Department of Physiology, Arizona College of Osteopathic Medicine, Midwestern University, Glendale, AZ, USA
| | - Mitchell L Drumm
- Pediatric Pulmonology Division, Case Western Reserve University, Cleveland, OH, USA
| | - Layla Al-Nakkash
- Department of Physiology, Arizona College of Osteopathic Medicine, Midwestern University, Glendale, AZ, USA
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Modification of the salivary secretion assay in F508del mice--the murine equivalent of the human sweat test. J Cyst Fibros 2013; 12:630-7. [PMID: 23768658 DOI: 10.1016/j.jcf.2013.05.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Revised: 05/06/2013] [Accepted: 05/13/2013] [Indexed: 11/24/2022]
Abstract
BACKGROUND In 2005 Best and Quinton established the salivary secretion assay in mice for the in vivo characterization of new drugs against cystic fibrosis (CF). However, limited data are available and the predictive value of this in vivo assay for treatment effects in CF patients is not fully understood. METHODS Therefore, we revisited the salivary secretion assay and systematically investigated the salivary secretion rates in different murine backgrounds and sexes, as well as in different CF mouse models. Moreover, we established quantification of salivary chloride content. RESULTS We found a strain- and sex-dependency of salivary secretion rates and were able to confirm the decreased β-adrenergic salivary secretion response in CFTR knockout mice (CFTR(tm1Unc)) as well as in the F508del CFTR mice of different origins (CFTR(tm1Kth) and CFTR(tm1Eur)). In heterozygous Cftr+/- and Cftr+/F508del mice, the isoprenaline-stimulated salivary secretion rate and the Cl(-) content were intermediate between values measured in WT and CF mice, indicating that this assay is also able to detect CF carriership. Pilocarpine-induced abnormalities in saliva chloride content in CF mice resembled the changes observed in the human sweat test. CONCLUSIONS Determination of murine salivary chloride content in combination with salivary secretion rate in CF mice may render the salivary secretion assay as a powerful tool for validation of new CF treatments.
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Abstract
PURPOSE We investigated the role that the cystic fibrosis transmembrane conductance regulator (CFTR) may play in Cl(-) transport in the acinar and ductal epithelial cells of rabbit lacrimal gland (LG). METHODS Primary cultured LG acinar cells were processed for whole-cell patch-clamp electrophysiological recording of Cl(-) currents by using perfusion media with high and low [Cl(-)], 10 µM forskolin and 100 µM 3-isobutyl-1-methylxanthine (IBMX), the non-specific Cl(-) channel blocker 4,4'-disothiocyanostilbene-2, 2' sulphonic acid (DIDS; 100 µM) and CFTRinh-172 (10 µM), a specific blocker for CFTR. Ex vivo live cell imaging of [Cl(-)] changes in duct cells was performed on freshly dissected LG duct with a multiphoton confocal laser scanning microscope using a Cl(-) sensitive fluorescence dye, N-[ethoxycarbonylmethyl]-6-methoxy-quinolinium bromide. RESULTS Whole-cell patch-clamp studies demonstrated the presence of Cl(-) current in isolated acinar cells and revealed that this Cl(-) current was mediated by CFTR channel. Live cell imaging also showed the presence of CFTR-mediated Cl(-) transport across the plasma membrane of duct cells. CONCLUSIONS Our previous data showed the presence of CFTR in all acinar and duct cells within the rabbit LG, with expression most prominent in the apical membranes of duct cells. The present study demonstrates that CFTR is actively involved in Cl(-) transport in both acinar cells and epithelial cells from duct segments, suggesting that CFTR may play a significant role in LG secretion.
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Affiliation(s)
- Michael Lu
- Department of Cell and Neurobiology, Doheny Eye Institute, University of Southern California, Los Angeles, CA, USA
- Department of Cell and Neurobiology, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Chuanqing Ding
- Department of Cell and Neurobiology, Doheny Eye Institute, University of Southern California, Los Angeles, CA, USA
- Department of Cell and Neurobiology, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
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Al-Nakkash L, Batia L, Bhakta M, Peterson A, Hale N, Skinner R, Sears S, Jensen J. Stimulation of murine intestinal secretion by daily genistein injections: gender-dependent differences. Cell Physiol Biochem 2011; 28:239-50. [PMID: 21865731 DOI: 10.1159/000331736] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/24/2011] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS The effect of daily injections with genistein (naturally occurring phytoestrogen) on intestinal chloride (Cl(-)) secretion was measured with Ussing chamber short circuit current (I(sc), μA/cm(2)), in C57BL/6J male and female mice, using 600 mg/kg genistein/day (600G), 300 mg/kg genistein/day (300G), 150 mg/kg genistein/day (150G) or genistein-free vehicle control (0G) for 1- or 2-weeks. METHODS AND RESULTS Injecting with 600G elicited significant increases in basal I(sc) in females after 1-week (ñ70 μA/cm(2), n=15, p < 0.05) and in males after 2-weeks (ñ80 μA/cm(2), n=5, p < 0.05) compared to their 0G counterparts. Chloride-free ringer significantly reduced basal I(sc) by 65% in 600G males and 72% in 600G females, suggesting that Cl(-) was the major anion comprising the genistein-stimulated secretion. The forskolin-stimulated (10 μM) I(sc) was significantly inhibited by the CFTR chloride channel inhibitors, glibenclamide (500 μM) and CFTR(inh)-172 (100 μM) in 600G males and females, suggesting some contribution by genistein-dependent CFTR-mediated Cl(-) secretion. We found no associated changes in intestinal morphology, nor change in total CFTR protein with 600G. There was a 5% increase in apical/subapical ratio in 600G males compared to controls (no change in females). CONCLUSION These data suggest that male and female mice both exhibit increased Cl- secretion with 600G, however, the mechanisms mediating this are gender-dependent.
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Affiliation(s)
- Layla Al-Nakkash
- Department of Physiology, Midwestern University, Glendale, AZ 85308, USA.
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Ko SBH, Yamamoto A, Azuma S, Song H, Kamimura K, Nakakuki M, Gray MA, Becq F, Ishiguro H, Goto H. Effects of CFTR gene silencing by siRNA or the luminal application of a CFTR activator on fluid secretion from guinea-pig pancreatic duct cells. Biochem Biophys Res Commun 2011; 410:904-9. [PMID: 21708133 DOI: 10.1016/j.bbrc.2011.06.093] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2011] [Accepted: 06/13/2011] [Indexed: 11/27/2022]
Abstract
AIMS The cystic fibrosis transmembrane conductance regulator (CFTR) is a cyclic AMP regulated chloride channel expressed in the apical plasma membrane of pancreatic duct cells where it plays an important role in fluid secretion. The purpose of this study was to elucidate the role of the CFTR chloride channel on ion and fluid secretion from the guinea-pig pancreas by manipulating the expression of CFTR by RNA interference or by luminal application of a CFTR selective activator, MPB91, in isolated cultured pancreatic ducts. MATERIALS AND METHODS Using cDNA isolated from the guinea-pig small intestine, fragments of the CFTR gene were generated by polymerase chain reaction and directly sequenced. Two different RNA duplexes for small interference RNA (siRNA) were designed from the sequence obtained. Fluid secretion from the isolated guinea-pig pancreatic ducts was measured using video-microscopy. The amount of CFTR chloride channel or AQP1 water channel expressed in pancreatic ducts was examined by immunoblotting with antibodies against CFTR or AQP1, respectively. RESULTS Guinea-pig CFTR consists of 1481 amino acid residues. An additional glutamine residue was found to be inserted between amino acid residues 403 and 404 of human CFTR. Forskolin-stimulated fluid secretion from intact pancreatic ducts was significantly higher in the presence of MPB91 compared to fluid secretion in the absence of MPB91. Both basal and forskolin-stimulated fluid secretion in pancreatic ducts transfected with CFTR specific siRNAs were reduced by ∼50% compared to fluid secretion from ducts transfected with scrambled negative control dsRNAs. The amount of CFTR and AQP1 proteins was reduced to 34% and 45% of control, respectively. CONCLUSIONS The activity of the CFTR chloride channel or the amount of CFTR protein expressed determines the rate of fluid secretion from the isolated guinea-pig pancreatic ducts.
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Affiliation(s)
- Shigeru B H Ko
- Department of Gastroenterology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi 466-8550, Japan.
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Mouse models of cystic fibrosis: Phenotypic analysis and research applications. J Cyst Fibros 2011; 10 Suppl 2:S152-71. [DOI: 10.1016/s1569-1993(11)60020-9] [Citation(s) in RCA: 167] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Powers ET, Morimoto RI, Dillin A, Kelly JW, Balch WE. Biological and chemical approaches to diseases of proteostasis deficiency. Annu Rev Biochem 2009; 78:959-91. [PMID: 19298183 DOI: 10.1146/annurev.biochem.052308.114844] [Citation(s) in RCA: 843] [Impact Index Per Article: 56.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Many diseases appear to be caused by the misregulation of protein maintenance. Such diseases of protein homeostasis, or "proteostasis," include loss-of-function diseases (cystic fibrosis) and gain-of-toxic-function diseases (Alzheimer's, Parkinson's, and Huntington's disease). Proteostasis is maintained by the proteostasis network, which comprises pathways that control protein synthesis, folding, trafficking, aggregation, disaggregation, and degradation. The decreased ability of the proteostasis network to cope with inherited misfolding-prone proteins, aging, and/or metabolic/environmental stress appears to trigger or exacerbate proteostasis diseases. Herein, we review recent evidence supporting the principle that proteostasis is influenced both by an adjustable proteostasis network capacity and protein folding energetics, which together determine the balance between folding efficiency, misfolding, protein degradation, and aggregation. We review how small molecules can enhance proteostasis by binding to and stabilizing specific proteins (pharmacologic chaperones) or by increasing the proteostasis network capacity (proteostasis regulators). We propose that such therapeutic strategies, including combination therapies, represent a new approach for treating a range of diverse human maladies.
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Affiliation(s)
- Evan T Powers
- Departments of Chemistry and Molecular and Experimental Medicine and the Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, CA 92037, USA.
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Ghayur MN. Traditional Chinese Medicine Research and Education in Canada. J Altern Complement Med 2009; 15:689-94. [DOI: 10.1089/acm.2008.0552] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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