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- Publisher Website: 10.1128/IAI.63.9.3401-3410.1995
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- PMID: 7642269
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Article: Cytopathic effects of Treponema denticola chymotrypsin-like proteinase on migrating and stratified epithelial cells
Title | Cytopathic effects of Treponema denticola chymotrypsin-like proteinase on migrating and stratified epithelial cells |
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Authors | |
Issue Date | 1995 |
Publisher | American Society for Microbiology. |
Citation | Infection And Immunity, 1995, v. 63 n. 9, p. 3401-3410 How to Cite? |
Abstract | The effects of Treponema denticola and its outer membrane-bound chymotrypsin-like proteinase on periodontal ligament epithelial cell cultures at different stages of maturity were studied. In sparse cultures with migrating epithelial cells, large intracellular vacuoles were formed rapidly following exposure to live T. denticola. Treponemes showing structural damage were seen occasionally inside membrane-bound vesicles. Intensive membrane blebbing occurred in infected cells and continued for up to 48 h before the cell died. Blebbing could also be induced by a purified chymotrypsin-like proteinase of T. denticola. Cortical actin and α-actinin of the bacterium- treated cells showed disorganization, and pericellular fibronectin was degraded by both whole T. denticola and the isolated proteinase. Epithelial cells with well-formed lateral cell contacts appeared to be more resistant to the effects of T. denticola than migrating isolated cells. In multilayer epithelial cultures, adhesion of T. denticola and membrane blebbing were observed infrequently. There was no evidence of invasion of T. denticola into epithelial multilayers. However, immunogold electron microscopy showed rapid transport of T. denticola chymotrypsin-like proteinase into newly formed large intracellular vacuoles within the epithelial layers. These vacuoles were lined by membranes studded with ribosomes. T. denticola-treated epithelial multilayers had loose cell contacts, collapsed intercellular spaces, and increased permeability. Through its capacity to cause these unique cytopathic effects, the chymotrypsin-like proteinase of T. denticola has the potential to contribute to the initiation of periodontal disease. |
Persistent Identifier | http://hdl.handle.net/10722/48918 |
ISSN | 2023 Impact Factor: 2.9 2023 SCImago Journal Rankings: 1.042 |
PubMed Central ID | |
ISI Accession Number ID |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Uitto, VJ | en_HK |
dc.contributor.author | Pan, YM | en_HK |
dc.contributor.author | Leung, WK | en_HK |
dc.contributor.author | Larjava, H | en_HK |
dc.contributor.author | Ellen, RP | en_HK |
dc.contributor.author | Finlay, BB | en_HK |
dc.contributor.author | McBride, BC | en_HK |
dc.date.accessioned | 2008-06-12T06:29:40Z | - |
dc.date.available | 2008-06-12T06:29:40Z | - |
dc.date.issued | 1995 | en_HK |
dc.identifier.citation | Infection And Immunity, 1995, v. 63 n. 9, p. 3401-3410 | en_HK |
dc.identifier.issn | 0019-9567 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/48918 | - |
dc.description.abstract | The effects of Treponema denticola and its outer membrane-bound chymotrypsin-like proteinase on periodontal ligament epithelial cell cultures at different stages of maturity were studied. In sparse cultures with migrating epithelial cells, large intracellular vacuoles were formed rapidly following exposure to live T. denticola. Treponemes showing structural damage were seen occasionally inside membrane-bound vesicles. Intensive membrane blebbing occurred in infected cells and continued for up to 48 h before the cell died. Blebbing could also be induced by a purified chymotrypsin-like proteinase of T. denticola. Cortical actin and α-actinin of the bacterium- treated cells showed disorganization, and pericellular fibronectin was degraded by both whole T. denticola and the isolated proteinase. Epithelial cells with well-formed lateral cell contacts appeared to be more resistant to the effects of T. denticola than migrating isolated cells. In multilayer epithelial cultures, adhesion of T. denticola and membrane blebbing were observed infrequently. There was no evidence of invasion of T. denticola into epithelial multilayers. However, immunogold electron microscopy showed rapid transport of T. denticola chymotrypsin-like proteinase into newly formed large intracellular vacuoles within the epithelial layers. These vacuoles were lined by membranes studded with ribosomes. T. denticola-treated epithelial multilayers had loose cell contacts, collapsed intercellular spaces, and increased permeability. Through its capacity to cause these unique cytopathic effects, the chymotrypsin-like proteinase of T. denticola has the potential to contribute to the initiation of periodontal disease. | en_HK |
dc.format.extent | 418 bytes | - |
dc.format.mimetype | text/html | - |
dc.language | eng | en_HK |
dc.publisher | American Society for Microbiology. | en_HK |
dc.relation.ispartof | Infection and Immunity | en_HK |
dc.rights | Infection and Immunity. Copyright © American Society for Microbiology. | en_HK |
dc.rights | Copyright © American Society for Microbiology, Infection and Immunity, 1995, v. 63 n. 9, p. 3401-3410 | en_HK |
dc.subject.mesh | Chymotrypsin - toxicity | en_HK |
dc.subject.mesh | Periodontal Ligament - cytology - drug effects | en_HK |
dc.subject.mesh | Treponema - enzymology - immunology - pathogenicity | en_HK |
dc.subject.mesh | Antigens, Bacterial - metabolism | en_HK |
dc.subject.mesh | Cell Movement | en_HK |
dc.title | Cytopathic effects of Treponema denticola chymotrypsin-like proteinase on migrating and stratified epithelial cells | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0019-9567&volume=63&issue=9&spage=3401&epage=3410&date=1995&atitle=Cytopathic+effects+of+Treponema+denticola+chymotrypsin-like+proteinase+on+migrating+and+stratified+epithelial+cells | en_HK |
dc.identifier.email | Leung, WK:ewkleung@hkucc.hku.hk | en_HK |
dc.identifier.authority | Leung, WK=rp00019 | en_HK |
dc.description.nature | published_or_final_version | en_HK |
dc.identifier.doi | 10.1128/IAI.63.9.3401-3410.1995 | - |
dc.identifier.pmid | 7642269 | - |
dc.identifier.pmcid | PMC173468 | - |
dc.identifier.scopus | eid_2-s2.0-0029112596 | en_HK |
dc.identifier.hkuros | 13896 | - |
dc.identifier.volume | 63 | en_HK |
dc.identifier.issue | 9 | en_HK |
dc.identifier.spage | 3401 | en_HK |
dc.identifier.epage | 3410 | en_HK |
dc.identifier.isi | WOS:A1995RQ79200023 | - |
dc.publisher.place | United States | en_HK |
dc.identifier.scopusauthorid | Uitto, VJ=7004455896 | en_HK |
dc.identifier.scopusauthorid | Pan, YM=7403340328 | en_HK |
dc.identifier.scopusauthorid | Leung, WK=25224691800 | en_HK |
dc.identifier.scopusauthorid | Larjava, H=7005475246 | en_HK |
dc.identifier.scopusauthorid | Ellen, RP=7005449768 | en_HK |
dc.identifier.scopusauthorid | Finlay, BB=7102051213 | en_HK |
dc.identifier.scopusauthorid | McBride, BC=7102465580 | en_HK |
dc.identifier.issnl | 0019-9567 | - |