論文 - 詳細
| RRC ID | 6572 |
|---|---|
| 著者 | Kato T, Tsuda T, Inaba H, Kawai S, Okahashi N, Shibata Y, Abiko Y, Amano A. |
| タイトル | Porphyromonas gingivalis gingipains cause G(1) arrest in osteoblastic/stromal cells. |
| ジャーナル | Oral Microbiol Immunol |
| Abstract |
INTRODUCTION:The program for mammalian cell growth and division consists of four successive phases; G(1), S, G(2), and M. Porphyromonas gingivalis may manipulate the host cell cycle to benefit bacterial virulence expression, which likely causes the cell and tissue tropism observed in chronic periodontal infections. We examined P. gingivalis for its effects on cell-cycle modulation in mouse ST2 osteoblastic/stromal cells. METHODS:Synchronized ST2 cells were infected with P. gingivalis ATCC33277 (wild-type, WT), gingipain-mutants [KDP136 (DeltargpADeltargpBDeltakgp), KDP129 (DeltargpADeltargpB), and KDP133 (Deltakgp)], and a fimbria-deficient mutant (KDP150) for 24 h, then the cell cycle was evaluated using flow cytometry. Cell-cycle-related molecule expression was examined with a microarray, as well as with quantitative real-time polymerase chain reaction and Western blotting assays. RESULTS:Both the WT and KDP150 strains significantly inhibited cellular proliferation and arrested the cell cycle in the G(0)/G(1) phase, while the expression levels of the cell-cycle regulatory molecules cyclin D and cyclin E were also decreased. In contrast, KDP136 did not show any effects. G(1) arrest was also clearly induced by KDP129 and KDP133, with KDP129 being more effective. CONCLUSION:The present findings suggest that P. gingivalis gingipains reduce cyclin expression and cause early G(1) arrest, leading to the inhibition of cellular proliferation. |
| 巻・号 | 23(2) |
| ページ | 158-64 |
| 公開日 | 2008-4-1 |
| DOI | 10.1111/j.1399-302X.2007.00405.x |
| PII | OMI405 |
| PMID | 18279184 |
| MeSH | Adhesins, Bacterial / physiology* Animals Bacterial Proteins / physiology* Bone Marrow Cells Cell Line Cyclins / biosynthesis Cysteine Endopeptidases / physiology* Down-Regulation Flow Cytometry G1 Phase Gingipain Cysteine Endopeptidases Mice Oligonucleotide Array Sequence Analysis Osteoblasts Porphyromonas gingivalis / enzymology* Stromal Cells |
| 引用数 | 18 |
| WOS 分野 | DENTISTRY, ORAL SURGERY & MEDICINE IMMUNOLOGY MICROBIOLOGY |
| リソース情報 | |
| ヒト・動物細胞 | |