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Region specificity of fibroblast-like cells in the mucosa of the rat large intestine. Cell Tissue Res 2022; 389:427-441. [PMID: 35779135 DOI: 10.1007/s00441-022-03660-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 06/22/2022] [Indexed: 11/02/2022]
Abstract
Our previous studies using immunohistochemistry and serial block-face scanning electron microscopy (SBF-SEM) clarified that fibroblast-like cells (FBLCs) in the rat ileal mucosa are classifiable into several subtypes, but their characteristics throughout the large intestine remain unknown. In this study, we investigated the region-specific characteristics of FBLCs in the rat large intestine using histological analysis including SBF-SEM. Immunohistochemistry revealed that CD34+CD31- FBLCs were localized in the lamina propria beneath the crypt bases throughout the large intestine and were more abundant in the descending colon than in the other regions. In addition, platelet-derived growth factor receptor α (PDGFRα)+ FBLCs were ubiquitously present just below the epithelium throughout the large intestine, and those at the crypt base were slightly more abundant in the descending colon than in the other regions. SBF-SEM analysis revealed that there were two types of FBLCs around the crypt base in both the cecum and the descending colon: sub-epithelial FBLCs localizing just beneath the epithelium in the manner of PDGFRα+ FBLCs, and lamina propria FBLCs localizing farther away from the epithelium than sub-epithelial FBLCs in the manner of CD34+CD31- FBLCs. The lamina propria FBLCs were closely apposed to various immune cells in the lamina propria, and their endoplasmic reticulum in the descending colon exhibited various dilatation levels, unlike that in the cecum. These findings indicate that FBLCs, especially around the crypt base, differed in each region of the large intestine with respect to localization, abundance, and ultrastructure, which could lead to the region-specific microenvironment around the crypt base.
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Kubow KE, Vukmirovic R, Zhe L, Klotzsch E, Smith ML, Gourdon D, Luna S, Vogel V. Mechanical forces regulate the interactions of fibronectin and collagen I in extracellular matrix. Nat Commun 2015; 6:8026. [PMID: 26272817 PMCID: PMC4539566 DOI: 10.1038/ncomms9026] [Citation(s) in RCA: 213] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Accepted: 07/09/2015] [Indexed: 12/11/2022] Open
Abstract
Despite the crucial role of extracellular matrix (ECM) in directing cell fate in healthy and diseased tissues--particularly in development, wound healing, tissue regeneration and cancer--the mechanisms that direct the assembly and regulate hierarchical architectures of ECM are poorly understood. Collagen I matrix assembly in vivo requires active fibronectin (Fn) fibrillogenesis by cells. Here we exploit Fn-FRET probes as mechanical strain sensors and demonstrate that collagen I fibres preferentially co-localize with more-relaxed Fn fibrils in the ECM of fibroblasts in cell culture. Fibre stretch-assay studies reveal that collagen I's Fn-binding domain is responsible for the mechano-regulated interaction. Furthermore, we show that Fn-collagen interactions are reciprocal: relaxed Fn fibrils act as multivalent templates for collagen assembly, but once assembled, collagen fibres shield Fn fibres from being stretched by cellular traction forces. Thus, in addition to the well-recognized, force-regulated, cell-matrix interactions, forces also tune the interactions between different structural ECM components.
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Affiliation(s)
- Kristopher E. Kubow
- Department of Biology, James Madison University, Harrisonburg, Virginia 22807, USA
- Department of Health Sciences and Technology, ETH Zurich, CH-8093 Zürich, Switzerland
| | - Radmila Vukmirovic
- Department of Health Sciences and Technology, ETH Zurich, CH-8093 Zürich, Switzerland
| | - Lin Zhe
- Department of Health Sciences and Technology, ETH Zurich, CH-8093 Zürich, Switzerland
| | - Enrico Klotzsch
- Department of Health Sciences and Technology, ETH Zurich, CH-8093 Zürich, Switzerland
- Centre for Vascular Research, ARC Centre of Excellence in Advanced Molecular Imaging and Australian Centre for Nanomedicine, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Michael L. Smith
- Department of Health Sciences and Technology, ETH Zurich, CH-8093 Zürich, Switzerland
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts 02215, USA
| | - Delphine Gourdon
- Department of Health Sciences and Technology, ETH Zurich, CH-8093 Zürich, Switzerland
- Department of Material Science and Engineering, Cornell University, Ithaca, New York 14853, USA
| | - Sheila Luna
- Department of Health Sciences and Technology, ETH Zurich, CH-8093 Zürich, Switzerland
| | - Viola Vogel
- Department of Health Sciences and Technology, ETH Zurich, CH-8093 Zürich, Switzerland
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Abstract
A number of apparently unrelated factors are known to have a profound effect on the metabolism of cultured mammalian cells; and some of these may be operative as metabolic controls in the whole animal as well. The more complete exploration of (i) homotypic and heterotypic cellular interactions, (ii) the spontaneous transformations sometimes observed in cultured cells, (iii) the mode of action of cytotoxic agents, (iv) the multiple metabolic effects of viral infection, and (v) the conditions necessary for the maintenance of specialized function in cultured cells, can be expected to throw light on the basic mechanisms underlying such complex processes as differentiation, senescence, and cancer.
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GREEN H, GOLDBERG B. COLLAGEN AND CELL PROTEIN SYNTHESIS BY AN ESTABLISHED MAMMALIAN FIBROBLAST LINE. Nature 1996; 204:347-9. [PMID: 14228868 DOI: 10.1038/204347a0] [Citation(s) in RCA: 140] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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GOLDBERG B, GREEN H. AN ANALYSIS OF COLLAGEN SECRETION BY ESTABLISHED MOUSE FIBROBLAST LINES. ACTA ACUST UNITED AC 1996; 22:227-58. [PMID: 14195613 PMCID: PMC2106491 DOI: 10.1083/jcb.22.1.227] [Citation(s) in RCA: 293] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In vitro synthesis of collagen by established mouse fibroblast lines has been examined by electron microscopy. During rapid growth (log phase), when collagen could not be detected in the cultures, the cells lacked a well developed granular ergastoplasm and Golgi system. Upon cessation of growth (stationary phase), collagen accumulated in the cultures and the cells demonstrated highly developed granular and smooth ergastoplasm. Collagen appeared to be synthesized in the rough-surfaced endoplasmic reticulum and to be transported as a soluble protein to the cell surface by vesicular elements of the agranular ergastoplasm. Fusion of the limiting membranes of these vesicles with the cell membrane permitted the discharge of the soluble collagen into the extracellular space, where fibrils of two diameter distributions formed. The secretion of collagen is concluded to be of the merocrine type. Alternative theories of collagen secretion are discussed and the data for established lines compared with the results of other in vitro and in vivo studies of collagen fibrillogenesis.
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TODARO GJ, GREEN H, GOLDBERG BD. TRANSFORMATION OF PROPERTIES OF AN ESTABLISHED CELL LINE BY SV40 AND POLYOMA VIRUS. Proc Natl Acad Sci U S A 1996; 51:66-73. [PMID: 14104605 PMCID: PMC300605 DOI: 10.1073/pnas.51.1.66] [Citation(s) in RCA: 162] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Wise GE, Lin F, Fan W. Culture and characterization of dental follicle cells from rat molars. Cell Tissue Res 1992; 267:483-92. [PMID: 1571962 DOI: 10.1007/bf00319370] [Citation(s) in RCA: 85] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Because the dental follicle is necessary for the eruption of teeth of limited eruption, it was the objective of this study to determine if the cells of the follicle could be cultured in vitro. To achieve this, dental follicles and associated enamel organs were dissected from the first and second mandibular molars of 6-7-day-old rats (secretory stage of amelogenesis), and then cultured in a medium that promotes fibroblast growth--the predominant cell type of the dental follicle. The cultured cells grew to confluency and were kept through 3 passages before experimentation. The cultured cells were fibroblastic in shape, elongate with processes, and transmission electron microscopy revealed that they contained an abundant rough endoplasmic reticulum, but did not form desmosomes. Immunofluorescent staining for anti-vimentin showed that all the cells stained and electron-microscopic immunogold labeling indicated that the antibody was associated with intermediate filaments. As revealed by SDS-polyacrylamide gel electrophoresis and Western blotting, the cultured cells synthesized and secreted the extracellular matrix molecules fibronectin and procollagens. Subsequent immunofluorescence staining of permeabilized and non-permeabilized cells confirmed the presence of fibronectin and type I collagen both intra- and extracellularly. Thus, based on all the above characteristics, the cultured cells appeared to be fibroblasts derived from the dental follicle, although a few of the fibroblasts may be derived from undifferentiated mesenchymal cells interposed between the alveolar bone and follicle. Experiments now can be conducted to determine how these cultured cells respond directly to growth factors that alter the rates of tooth eruption.
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Affiliation(s)
- G E Wise
- Department of Anatomy and Cell Biology, Texas College of Osteopathic Medicine, Fort Worth 76107
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Müller PK, Kirsch E, Gauss-Müller V, Krieg T. Some aspects of the modulation and regulation of collagen synthesis in vitro. Mol Cell Biochem 1981; 34:73-85. [PMID: 7015111 DOI: 10.1007/bf02354861] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
We reviewed here a number of publications containing data on the quantitative aspects of collagen synthesis in vitro. In one section we discussed the factors which modulate the amount of collagen synthesized in various culture systems and in another section we presented experimental evidence for regulatory mechanisms operating in collagen synthesis on the transcriptional and/or translational levels. We believe that growing knowledge of the mechanisms controlling collagen synthesis will help us to understand and deal with fibrotic processes better.
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Bissell MJ. The differentiated state of normal and malignant cells or how to define a "normal" cell in culture. INTERNATIONAL REVIEW OF CYTOLOGY 1981; 70:27-100. [PMID: 7228573 DOI: 10.1016/s0074-7696(08)61130-4] [Citation(s) in RCA: 167] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Bearden LJ, Cooke FW. Growth inhibition of cultured fibroblasts by cobalt and nickel. JOURNAL OF BIOMEDICAL MATERIALS RESEARCH 1980; 14:289-309. [PMID: 7364791 DOI: 10.1002/jbm.820140310] [Citation(s) in RCA: 62] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
It is known that tissues surrounding the site of an implanted prosthetic alloy are exposed to increased concentrations of the metals comprising the alloy. However, the exact identity and concentration of such metallic products are usually unknown, thus limiting the possibilities for quantifying any observed toxicological response to the metals. This report describes some of the effects of increased concentrations (7.5-30 microgram/ml; 1-5 x 10(-4)M) Of cobalt (as CoCl2.6H2O) and of nickel (NiCl2.6H2O) on the growth and morphology of cultured mouse fibroblasts. Ultrafiltration experiments indicated that much of the total Co or Ni present in cell culture medium could become bound to macromolecular serum components of the medium. Morphological changes and depressions in the cell growth rate were found to result from high concentrations (15-30 microgram/ml) of either Co or Ni. However, lower concentrations of nickel may have produced some stimulation of cell growth, whereas all concentrations of Co studied were found to depress the rate of cell growth. The growth rate of actively proliferating fibroblasts was quite sensitive to variations in the concentration of either cobalt or nickel. Increased concentrations of cobalt or nickel, therefore, might also affect the normal reconstructive activity of fibroblasts in vivo.
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de Clerck YA, Jones PA. The effect of ascorbic acid on the nature and production of collagen and elastin by rat smooth-muscle cells. Biochem J 1980; 186:217-25. [PMID: 7370010 PMCID: PMC1161522 DOI: 10.1042/bj1860217] [Citation(s) in RCA: 65] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
1. The effects of various concentrations of ascorbic acid on the quality and quantity of the insoluble extracellular matrices produced by two strains of cultured rat smooth-muscle cells were studied. 2. Ascorbic acid was necessary for the appearance of insoluble collagen in the extracellular matrix. 3. Secretion of soluble collagen continued in the absence of ascorbic acid, but this soluble collagen was markedly underhydroxylated. 4. The amount of insoluble collagen present in the matrix was directly related to the ascorbic acid concentration. 5. The insoluble collagen that appeared in the matrix under conditions where ascorbic acid was limiting was no more than 7% underhydroxylated. 6. In contrast, the amount of insoluble elastin produced was inversely proportional to the ascorbic acid concentration. 7. The elastin produced in the absence of ascorbic acid had the expected amino acid composition, but hydroxyproline was absent. 8. The hydroxyproline content of elastin was also directly dependent on the ascorbic acid concentration. 9. Ascorbic acid had variable effects on the quantity of glycoprotein(s) present in the matrix. 10. The appearance of insoluble collagen in the extracellular matrices produced by cultured human fibroblasts and calf endothelial cells was also completely dependent on the presence of ascorbic acid.
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Sakakibapa K, Saito M, Umeda M, Enaka K, Tsukada Y. Native collagen formation by liver parenchymal cells in culture. Nature 1976; 262:316-8. [PMID: 958381 DOI: 10.1038/262316a0] [Citation(s) in RCA: 38] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Gnädinger MC, Schwager-Hübner ME. Biosynthesis of glycosaminoglycans by mammalian corneal epithelium and fibroblasts in vitro. I. Isolation and fractionation-differences of GAG from the two cell types. ALBRECHT VON GRAEFES ARCHIV FUR KLINISCHE UND EXPERIMENTELLE OPHTHALMOLOGIE. ALBRECHT VON GRAEFE'S ARCHIVE FOR CLINICAL AND EXPERIMENTAL OPHTHALMOLOGY 1975; 196:9-19. [PMID: 126026 DOI: 10.1007/bf00410022] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Labeled glycosaminoglycans (GAG) were isolated and fractionated from cultured rabbit corneal epithelium, rabbit or bovine corneal fibroblasts and rabbit bone fibroblasts that had been previously incubated with either Na235SO4 or D-glucosamine-6-3H precursors. Thus it was demonstrated that the epithelium produces GAG. The fractionations indicated that the epithelial cells predominantly synthesize GAG with a lower degree of sulfation than those produced by corneal fibroblasts. The GAG-fractionation-patterns of the corneal epithelium and bone fibroblasts were similar.
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Perlman M, Baum JL, Kaye GI. Fine structure and collagen synthesis activity of monolayer cultures of rabbit corneal endothelium. J Biophys Biochem Cytol 1974; 63:306-11. [PMID: 4472479 PMCID: PMC2109353 DOI: 10.1083/jcb.63.1.306] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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19
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Aleo JJ. Influence of sodium salicylate on metabolism of lathyrogen-treated 3T6 fibroblasts in culture. J Pharm Sci 1974; 63:1211-3. [PMID: 4277538 DOI: 10.1002/jps.2600630808] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Baenziger NL, Jacobi CH, Thach RE. Regulation of Protein Synthesis during Density-dependent Growth Inhibition of BHK21/13 Cells. J Biol Chem 1974. [DOI: 10.1016/s0021-9258(19)42598-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Walker F, Elmslie W, Fraser RA, Snape PE, Watt GC. Cytotoxic effect of alcohol on liver cells and fibroblasts in vitro. Scott Med J 1974; 19:125-7. [PMID: 4829634 DOI: 10.1177/003693307401900305] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Cultures of liver cells (Chang) and of fibroblasts (3T6) were exposed to media containing a range of concentrations of ethanol. At the end of a standard period of time the number of viable cells was determined. As the concentration of ethanol increased over 0.25 per cent v/v liver cell survival decreased progressively. Fibroblast survival decreased progressively at ethanol concentrations over 0.50 per cent v/v. This indicates that ethanol is more toxic to liver cells than to fibroblasts. Certain alcoholic beverages, particularly brandy, were found to be more toxic than pure ethanol.
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Geddes-Dwyer V, Bosanquet JS, O'Grady RL, Cameron DA. Transplantation and tissue culture studies of radiation-induced osteosarcoma in the rat. Pathology 1974; 6:71-8. [PMID: 4522902 DOI: 10.3109/00313027409077158] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Submicroscopic investigation of the genesis of collagen fibers in experimental silicosis. Bull Exp Biol Med 1971. [DOI: 10.1007/bf00813603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Breen PC, Stenchever MA. Some effects of diazepam on the fine structure of human fibroblasts in tissue culture. Am J Obstet Gynecol 1970; 108:520-7. [PMID: 5505980 DOI: 10.1016/0002-9378(70)90225-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Bachra BN, Van Der Eb AJ. Site of proline hydroxylation during collagen synthesis in mouse fibroblasts. Biochemistry 1970; 9:3001-11. [PMID: 5529032 DOI: 10.1021/bi00817a011] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Halpern M, Rubin H. Proteins released from chick embryo fibroblasts in culture. II. Studies on cells in different states of culture. Exp Cell Res 1970; 60:96-102. [PMID: 4314773 DOI: 10.1016/0014-4827(70)90492-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Gribble TJ, Comstock JP, Udenfriend S. Collagen chain formation and peptidyl proline hydroxylation in monolayer tissue cultures of L-929 fibroblasts. Arch Biochem Biophys 1969; 129:308-16. [PMID: 5762970 DOI: 10.1016/0003-9861(69)90180-5] [Citation(s) in RCA: 82] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Bosmann HB, Eylar EH. Collagen-glucosyl transferase in fibriblasts transformed by oncogenic viruses. Nature 1968; 218:582-3. [PMID: 4968368 DOI: 10.1038/218582a0] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Abstract
Replication and the performance of a differentiated function have been considered antagonistic processes. When cells in culture are partially tially synchronized with 5-fluoro-2'-deoxyuridine (FUdR), the synthesis of the specialized protein (collagen) is not reduced during chromosomal replication (S period). Collagen synthesis varies with general protein synthesis through the S period.
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Green H, Goldberg B, Todaro GJ. Differentiated cell types and the regulation of collagen synthesis. Nature 1966; 212:631-3. [PMID: 5971697 DOI: 10.1038/212631b0] [Citation(s) in RCA: 82] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Green H, Todaro GJ, Goldberg B. Collagen synthesis in fibroblasts transformed by oncogenic viruses. Nature 1966; 209:916-7. [PMID: 5922791 DOI: 10.1038/209916a0] [Citation(s) in RCA: 93] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Sinclair R. Steady-state suspension culture and metabolism of strain L mouse cells in simple defined medium. Exp Cell Res 1966; 41:20-33. [PMID: 4952027 DOI: 10.1016/0014-4827(66)90543-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Hamerman D, Todaro GJ, Green H. The production of hyaluronate by spontaneously established cell lines and viral transformed lines of fibroblastic origin. BIOCHIMICA ET BIOPHYSICA ACTA 1965; 101:343-51. [PMID: 4285883 DOI: 10.1016/0926-6534(65)90013-8] [Citation(s) in RCA: 68] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Biberfeld P, Ericsson JL, Perlmann P, Raftell M. Increased occurrence of cytoplasmic filaments in in vitro propagated rat liver epithelial cells. Exp Cell Res 1965; 39:301-5. [PMID: 5831246 DOI: 10.1016/0014-4827(65)90034-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Friedmann I, Cawthorne T, Bird ES. Broad-banded striated bodies in the sensory epithelium of the human macula and in neurinoma. Nature 1965; 207:171-4. [PMID: 5886108 DOI: 10.1038/207171a0] [Citation(s) in RCA: 37] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Green H, Goldberg B. Synthesis of collagen by mammalian cell lines of fibroblastic and nonfibroblastic origin. Proc Natl Acad Sci U S A 1965; 53:1360-5. [PMID: 5324618 PMCID: PMC219857 DOI: 10.1073/pnas.53.6.1360] [Citation(s) in RCA: 72] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
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Abstract
When cell cultures are initiated from aortic connective tissue of rats and maintained as monolayers on glass, the differentiated property of collagen production disappears. However, these same cells, when placed in diffusion chambers in the peritoneal cavities of other rats, produce collagen, as indicated both morphologically and by the accumulation of hydroxy-proline within the chambers.
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GREEN H, HEMERMAN D. Production of Hyaluronate and Collagen by Fibroblast Clones in Culture. Nature 1964; 201:710. [PMID: 14134721 DOI: 10.1038/201710a0] [Citation(s) in RCA: 39] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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