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Hiruma H, Hikawa S, Kawakami T. Immunocytochemical colocalization of fibroblast growth factor-1 with neurotrophin-3 in mouse alveolar macrophages. Acta Histochem Cytochem 2012; 45:131-7. [PMID: 22685355 PMCID: PMC3365304 DOI: 10.1267/ahc.11055] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2011] [Accepted: 02/02/2012] [Indexed: 12/02/2022] Open
Abstract
Alveolar macrophages are known to express a variety of growth factors and neurotrophins. Fibroblast growth factor-1 (FGF-1) is abundantly present in the lung and has mitogenic and neurotrophic activities similarly to neurotrophins. In order to determine whether FGF-1 associates with neurotrophins in alveolar macrophages, we investigated the immunocytochemical colocalization of FGF-1 with neurotrophins, nerve growth factor (NGF), brain-derived neurotrophic factor (BDNF), and neurotrophin-3 (NT-3), in mouse alveolar macrophages. The results showed that 34% of macrophages were immunoreactive for FGF-1, 10% for NGF, 9% for BDNF, and 17% for NT-3. Of FGF-1-immunoreactive (IR) macrophages, 16% were immunoreactive for NT-3, but only small percentages were immunoreactive for NGF (0.8%) and for BDNF (0.3%). FGF-1 and neurotrophins were all localized in the intracellular vesicles. In the vesicles, FGF-1 and NT-3 were frequently colocalized. All macrophages expressed lysosome-associated protein-2 (LAMP-2), a late endosomal and lysosomal marker, and early endosomes antigen 1 (EEA1), an early endosomal marker. FGF-1 and NT-3 were predominantly colocalized with LAMP-2 rather than with EEA1, whereas NGF and BDNF were colocalized with EEA1 rather than with LAMP-2. These results indicate that FGF-1 and NT-3 are substantially expressed in mouse alveolar macrophages and colocalized in vesicles, predominantly in late endosomes and lysosomes.
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Affiliation(s)
- Hiromi Hiruma
- Department of Physiology, Kitasato University School of Medicine
| | - Shiori Hikawa
- Department of Medicine, Kitasato University School of Medicine
| | - Tadashi Kawakami
- Department of Physiology, Kitasato University School of Medicine
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2
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Nakayama F, Yasuda T, Umeda S, Asada M, Imamura T, Meineke V, Akashi M. Fibroblast growth factor-12 (FGF12) translocation into intestinal epithelial cells is dependent on a novel cell-penetrating peptide domain: involvement of internalization in the in vivo role of exogenous FGF12. J Biol Chem 2011; 286:25823-34. [PMID: 21518765 DOI: 10.1074/jbc.m110.198267] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The extracellular effect of fibroblast growth factor-12 (FGF12) remains unknown because FGF12 cannot activate any fibroblast growth factor receptors (FGFRs), and FGF12 is not currently thought to be released from cells. We reported previously that FGF12 plays an intracellular role in the inhibition of radiation-induced apoptosis. In this study, we demonstrated that recombinant FGF12 was able to be internalized into the cytoplasm of a rat intestinal epithelial cell line, IEC6, and this process was dependent on two novel cell-penetrating peptide (CPP) domains (CPP-M and CPP-C). In particular, CPP-C, composed of ∼10 amino acids, was identified as a specific domain of FGF12 and its subfamily in the C-terminal region (residues 140-149), although CPP-M was a common domain in the internal region of the FGF family. The absence of CPP-C from FGF12 or a mutation (E142L) in the CPP-C domain drastically reduced the internalization of FGF12 into cells. Therefore, CPP-C played an essential role in the internalization of FGF12. In addition, CPP-C was able to deliver other polypeptides into cells as a CPP because an FGF1/CPP-C chimeric protein was internalized into IEC6 cells more efficiently than wild-type FGF1. Finally, intraperitoneally added FGF12 inhibited radiation-induced apoptosis in the intestinal epithelial cells of BALB/c mice, and deletion of the CPP-C domain decreased the inhibition of the apoptosis. These findings suggest that exogenous FGF12 can play a role in tissues by translocating into cells through the plasma membrane, and the availability of this novel CPP provides a new tool for the intracellular delivery of bioactive molecules.
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Affiliation(s)
- Fumiaki Nakayama
- Department of Radiation Emergency Medicine, National Institute of Radiological Sciences, Inage-ku, Chiba 263-8555, Japan.
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3
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Ruzza P, Biondi B, Marchiani A, Antolini N, Calderan A. Cell-Penetrating Peptides: A Comparative Study on Lipid Affinity and Cargo Delivery Properties. Pharmaceuticals (Basel) 2010; 3:1045-1062. [PMID: 27713286 PMCID: PMC4034019 DOI: 10.3390/ph3041045] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2009] [Revised: 03/23/2010] [Accepted: 03/29/2010] [Indexed: 11/16/2022] Open
Abstract
A growing number of natural and/or synthetic peptides with cell membrane penetrating capability have been identified and described in the past years. These molecules have been considered promising tools for delivering bioactive compounds into various cell types. Although the mechanism of uptake is still unclear, it is reasonable to assume that the relative contribute of each proposed mechanism could differ for the same peptide, depending on experimental protocol and cargo molecule composition. In this work we try to connect the capability to interact with model lipid membrane and structural and chemical characteristics of CPPs in order to obtain a biophysical classification that predicts the behavior of CPP-cargo molecules in cell systems. Indeed, the binding with cell membrane is one of the primary step in the interaction of CPPs with cells, and consequently the studies on model membrane could become important for understanding peptide-membrane interaction on a molecular level, explaining how CPPs may translocate a membrane without destroying it and how this interactions come into play in shuttling CPPs via different routes with different efficiency. We analyzed by CD and fluorescence spectroscopies the binding properties of six different CPPs (kFGF, Nle54-Antp and Tat derived peptides, and oligoarginine peptides containing 6, 8 or 10 residues) in absence or presence of the same cargo peptide (the 392-401pTyr396 fragment of HS1 protein). The phospholipid binding properties were correlated to the conformational and chemical characteristics of peptides, as well as to the cell penetrating properties of the CPP-cargo conjugates. Results show that even if certain physico-chemical properties (conformation, positive charge) govern CPP capability to interact with the model membrane, these cannot fully explain cell-permeability properties.
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Affiliation(s)
- Paolo Ruzza
- Institute of Biomolecular Chemistry of CNR, Padova Unit, and Department of Chemical Sciences, University of Padova, via Marzolo 1, I-35131 Padova, Italy.
| | - Barbara Biondi
- Institute of Biomolecular Chemistry of CNR, Padova Unit, and Department of Chemical Sciences, University of Padova, via Marzolo 1, I-35131 Padova, Italy
| | - Anna Marchiani
- Institute of Biomolecular Chemistry of CNR, Padova Unit, and Department of Chemical Sciences, University of Padova, via Marzolo 1, I-35131 Padova, Italy
| | - Nicola Antolini
- Institute of Biomolecular Chemistry of CNR, Padova Unit, and Department of Chemical Sciences, University of Padova, via Marzolo 1, I-35131 Padova, Italy
| | - Andrea Calderan
- Institute of Biomolecular Chemistry of CNR, Padova Unit, and Department of Chemical Sciences, University of Padova, via Marzolo 1, I-35131 Padova, Italy
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4
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Imamura Y, Fujigaki Y, Oomori Y, Usui S, Wang PL. Cooperation of salivary protein histatin 3 with heat shock cognate protein 70 relative to the G1/S transition in human gingival fibroblasts. J Biol Chem 2009; 284:14316-25. [PMID: 19321452 DOI: 10.1074/jbc.m807278200] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Histatins, a family of salivary proteins, have antimicrobial activity. Candida albicans, which is killed by histatins, induces oral candidiasis in individuals with compromised immune systems. Although the functional significance of histatins has been documented, their biological and physiological functions against host cells have not been clarified. In this study, we found that histatin 3, a member of the histatin family, binds to heat shock cognate protein 70 (HSC70). These proteins were co-localized in the cytoplasm and nucleus in human gingival fibroblasts following non-heat and heat shock. Histatin 3 induced stimulation of DNA synthesis and cell survival in human gingival fibroblasts in a dose-dependent manner. This DNA synthesis was found to be dependent on HSC70 by knockdown experiments. The effect of heat shock on DNA synthesis induced by histatin 3 was approximately 2-fold higher than that of non-heat shock. When the histatin 3 uptake into cells was inhibited by monodansylcadaverine or when histatin 3 binding to HSC70 was precluded by 15-deoxyspergualin, DNA synthesis by histatin 3 was approximately 2-fold less than that without monodansylcadaverine or 15-deoxyspergualin. Although HSC70 directly bound to p27(Kip1) (a cyclin-dependent kinase inhibitor), histatin 3 increased the binding between those proteins but not with a peptide capable of binding to HSC70. Moreover histatin 3 prevented ATP-dependent dissociation of HSC70-p27(Kip1). ATP was unable to form a histatin 3-HSC70(D10N)-p27(Kip1) complex (HSC70(D10N) is a mutant attenuating ATPase activity). These findings suggest that histatin 3 may be involved in cell proliferation through the regulation of HSC70 and p27(Kip1) in oral cells.
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Affiliation(s)
- Yasuhiro Imamura
- Departments of Pharmacology, Community Dentistry, Special Patient and Oral Care, and Periodontology, Matsumoto Dental University, 1780 Gohbara, Hiro-oka, Shiojiri, Nagano 399-0781, Japan
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MAEDA T, YAMAMOTO T, ISIKAWA Y, ITOH N, ARASE S. Sanguisorba Officinalis Root Extract Has FGF-5 Inhibitory Activity and Reduces Hair Loss by Causing Prolongation of the Anagen Period. ACTA ACUST UNITED AC 2007. [DOI: 10.2336/nishinihonhifu.69.81] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Ito C, Saitoh Y, Fujita Y, Yamazaki Y, Imamura T, Oka S, Suzuki S. Decapeptide with fibroblast growth factor (FGF)-5 partial sequence inhibits hair growth suppressing activity of FGF-5. J Cell Physiol 2003; 197:272-83. [PMID: 14502567 DOI: 10.1002/jcp.10369] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Earlier studies demonstrated that knock-out of fibroblast growth factor-5 gene (Fgf-5) prolonged anagen VI phase of hair cycle, resulting long hairs in the mice. We showed the activities on hair growth of the two Fgf-5 gene products, one of which, FGF-5 suppressed hair growth by inhibiting anagen proceeding and inducing the transition from anagen to catagen, and FGF-5S, a shorter polypeptide with FGF-5-antagonizing activity translated from alternatively spliced mRNA, suppressed this activity of FGF-5. As the results suggested that FGF-5 antagonist would increase hair growth, we synthesized various peptides having partial sequences of human FGF-5 and FGF-5S and determined their FGF-5 antagonist activity. Among them, a decapeptide designated P3 (95-VGIGFHLQIY-104) that aligns with receptor binding sites of FGF-1 and FGF-2 suppressed FGF-5-induced proliferation of BALB/3T3 A31 and NIH/3T3 murine fibroblasts, and FGF receptor-1c (FGFR-1c)-transfected Ba/F3 cell line (FR-Ba/F3 cells). IC50s of this peptide on these cell proliferations were 64, 28, 146 microM, respectively. On the other hand, IC50 of this peptide on binding of FGF-5 to the FGFR-1(IIIc)/Fc chimera was 483 microM. Examination in dorsal depilated mice revealed that the P3 peptide reduced the activity of FGF-5 to recover hair pigmentation and hair follicle lengths. The classification of histologically observed skin sections showed FGF-5-induced delations of anagen procedure had reduced by the P3 peptide. The anti-Ki67 antibody staining of hair follicles was inhibited by administration of FGF-5, and this inhibition by FGF-5 was recovered by administration of the P3 peptide. The P3 peptide alone did not affect hair follicle length and hair cell proliferation. These results indicate that the decapeptide antagonized FGF-5 activity in vivo, and reduced the inhibition of FGF-5 in hair growth, confirming that FGF-5 inhibitors are promising substances against hair loss and/or for promoting hair growth.
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Affiliation(s)
- Chikako Ito
- Institute for Biological Resources and Functions, National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan
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Komi A, Ishisaki A, Suzuki M, Imamura T. A permeable FGF-1 nuclear localization sequence peptide induces DNA synthesis independently of Ras activation. Exp Cell Res 2003; 283:91-100. [PMID: 12565822 DOI: 10.1016/s0014-4827(02)00029-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A 26-amino-acid peptide (designated PFNP) composed of the nuclear localization signal of fibroblast growth factor (FGF)-1 and a membrane-permeable peptide is known to mimic FGF-1's ability to stimulate DNA synthesis in various cell types at low cell densities. The underlying molecular mechanism is unknown, however. Here we show that PFNP activity is inhibited in murine fibroblasts by a tyrosine kinase inhibitor, that PFNP does not bind to the FGF receptor, and that PFNP does not induce phosphorylation of the FGF receptor substrate. In addition, expression of a dominant-negative form of Ras, which abolished the activities of epidermal growth factor (EGF) and heparin-binding EGF, had no affect on PFNP-induced DNA synthesis. Despite this apparent Ras independence, PFNP activity correlated with phosphorylation of ERK1/2 MAP kinases and was concentration dependently inhibited by inhibitors of ERK1/2 MAP kinase phosphorylation. These results indicate that whereas Ras activation is dispensable for PFNP-induced DNA synthesis, activation of tyrosine kinases and ERK1/2 kinases, albeit independently of the FGF receptor system, is crucial. Interestingly, FGF-1 signaling was predominantly Ras-independent when the cell density was optimum for PFNP, suggesting that PFNP and FGF-1 share the same signaling mechanism.
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Affiliation(s)
- Akiko Komi
- Age Dimension Research Center, National Institute of Advanced Industrial Science and Technology, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan
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Olsnes S, Klingenberg O, Wiedłocha A. Transport of exogenous growth factors and cytokines to the cytosol and to the nucleus. Physiol Rev 2003; 83:163-82. [PMID: 12506129 DOI: 10.1152/physrev.00021.2002] [Citation(s) in RCA: 96] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
In recent years a number of growth factors, cytokines, protein hormones, and other proteins have been found in the nucleus after having been added externally to cells. This review evaluates the evidence that translocation takes place and discusses possible mechanisms. As a demonstration of the principle that extracellular proteins can penetrate cellular membranes and reach the cytosol, a brief overview of the penetration mechanism of protein toxins with intracellular sites of action is given. Then problems and pitfalls in attempts to demonstrate the presence of proteins in the cytosol and in the nucleus as opposed to intracellular vesicular compartments are discussed, and some new approaches to study this are described. A detailed overview of the evidence for translocation of fibroblast growth factor, HIV-Tat, interferon-gamma, and other proteins where there is evidence for intracellular action is given, and translocation mechanisms are discussed. It is concluded that although there are many pitfalls, the bulk of the experiments indicate that certain proteins are indeed able to enter the cytosol and nucleus. Possible roles of the internalized proteins are discussed.
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Affiliation(s)
- Sjur Olsnes
- Institute for Cancer Research, The Norwegian Radium Hospital, Montebello, Oslo, Norway.
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9
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Mizukoshi E, Suzuki M, Misono T, Loupatov A, Munekata E, Kaul SC, Wadhwa R, Imamura T. Cell-cycle dependent tyrosine phosphorylation on mortalin regulates its interaction with fibroblast growth factor-1. Biochem Biophys Res Commun 2001; 280:1203-9. [PMID: 11162655 DOI: 10.1006/bbrc.2001.4225] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We previously reported that endogenously expressed, intracellularly localized fibroblast growth factor (FGF)-1 interacts with mortalin. Here we report that FGF-1 added to the culture medium of quiescent BALB/c3T3 cells is taken up by the cells and interacts with mortalin in the cells in a regulated manner. Although both the internalized FGF-1 and mortalin were present at high levels throughout the FGF-1-initiated cell cycle, their interaction became apparent only in late G1 phase. Interestingly, mortalin was preferentially tyrosine phosphorylated at the same time, and when its normally weak phosphorylation in early G1 phase was augmented by treating the cells with vanadate, a strong interaction between mortalin and FGF-1 was established. Conversely, when phosphorylated mortalin was treated with tyrosine phosphatase, its interaction with FGF-1 was abrogated. These results indicate that FGF-1 taken up by cells preferentially interacts with mortalin in late G1 phase of the cell cycle, and that tyrosine phosphorylation of mortalin regulates this interaction.
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Affiliation(s)
- E Mizukoshi
- National Institute of Bioscience and Human Technology, Tsukuba, Ibaraki, 305-8566, Japan
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10
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Laulederkind SJ, Kirtikara K, Raghow R, Ballou LR. The regulation of PGE(2) biosynthesis in MG-63 osteosarcoma cells by IL-1 and FGF is cell density-dependent. Exp Cell Res 2000; 258:409-16. [PMID: 10896792 DOI: 10.1006/excr.2000.4961] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We investigated the molecular mechanisms by which treatment of the human osteoblast-like cell line MG-63 with interleukin 1beta (IL-1) and/or fibroblast growth factor 1 (FGF-1) elicited prostaglandin biosynthesis. IL-1 induced a 5-fold increase in PGE(2) production compared to controls. While treatment with FGF-1 alone did not affect PGE(2) biosynthesis, it enhanced the formation of PGE(2) by IL-1 by an additional 3- to 5-fold. IL-1-induced PGE(2) biosynthesis accompanied increases in steady-state levels of mRNAs encoding cPLA(2) (10- to 15-fold) and PGHS-2 (>3-fold) and concomitant increases in cPLA(2) protein (>3-fold) and PGHS-2 protein (>1. 5-fold). FGF-1 treatment did not affect PGHS-2 gene expression, but enhanced the effect of IL-1 on PGHS-2 expression by an additional 2- to 3-fold. FGF-1 alone enhanced cPLA(2) expression (5-fold), and the combined effects of FGF-1 and IL-1 on cPLA(2) expression were additive. There was no measurable effect of either agonist on PGHS-1 expression. We also discovered that induction of PGE(2) biosynthesis in response to IL-1 or IL-1/FGF-1 was affected by the density of MG-63 cells in culture. Subconfluent cultures displayed a 3- to 10-fold greater response to IL-1 or IL-1/FGF-1 than confluent cultures. The decreased PGE(2) induction by IL-1 in confluent cultures was associated with reduced IL-1 receptor expression. We conclude that the signaling pathways resulting in PGE(2) biosynthesis in response to proinflammatory agents like IL-1 are subject to complex regulation by additional soluble mediators as well as cell-cell or cell-extracellular matrix interactions.
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Affiliation(s)
- S J Laulederkind
- Department of Veterans Affairs Medical Center, The University of Tennessee, Memphis, Tennessee 38163, USA.
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11
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Hu GF, Kim HJ, Xu CJ, Riordan JF. Fibroblast growth factors are translocated to the nucleus of human endothelial cells in a microtubule- and lysosome-independent pathway. Biochem Biophys Res Commun 2000; 273:551-6. [PMID: 10873643 DOI: 10.1006/bbrc.2000.2978] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Exogenous acidic and basic fibroblast growth factors undergo rapid nuclear translocation in human umbilical vein endothelial cells. When nuclear translocation reaches saturation, more than 70% of the internalized growth factors are in the nuclear fraction. Lysosomal inhibitors, such as leupeptin and chloroquine, and microtubule inhibitors including colchicine and 2-methoxyl-beta-estradiol neither increase nor decrease nuclear translocation. The results suggest that nuclear translocation of fibroblast growth factors does not require cytosolic accumulation or lysosomal processing and that the transportation of exogenous growth factors across the cytoplasm is independent of microtubules.
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Affiliation(s)
- G f Hu
- Center for Biochemical and Biophysical Sciences and Medicine, Department of Radiology, Harvard Medical School, 250 Longwood Avenue, Boston, Massachusetts 02115, USA
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BASSUK JAMESA, GRADY RICHARD, MITCHELL MICHAEL. REVIEW ARTICLE: THE MOLECULAR ERA OF BLADDER RESEARCH. TRANSGENIC MICE AS EXPERIMENTAL TOOLS IN THE STUDY OF OUTLET OBSTRUCTION. J Urol 2000. [DOI: 10.1016/s0022-5347(05)67490-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- JAMES A. BASSUK
- From the Division of Pediatric Urology, Department of Surgery, Children’s Hospital and Regional Medical Center, Seattle, Washington
| | - RICHARD GRADY
- From the Division of Pediatric Urology, Department of Surgery, Children’s Hospital and Regional Medical Center, Seattle, Washington
| | - MICHAEL MITCHELL
- From the Division of Pediatric Urology, Department of Surgery, Children’s Hospital and Regional Medical Center, Seattle, Washington
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BASSUK JAMESA, GRADY RICHARD, MITCHELL MICHAEL. REVIEW ARTICLE: THE MOLECULAR ERA OF BLADDER RESEARCH. TRANSGENIC MICE AS EXPERIMENTAL TOOLS IN THE STUDY OF OUTLET OBSTRUCTION. J Urol 2000. [DOI: 10.1097/00005392-200007000-00056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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