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RISS 인기검색어
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- 저자 : Fuyuki Sato (검색결과 2 건)
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Chieko Taguchi,Fuyuki Sato,Chen Wang,Shigeru Nakamura,Kosuke Oikawa,Ujjal Kumar Bhawal,Hiroyuki Okada,Kazumune Arikawa 조선대학교 치의학연구원 2022 Oral Biology Research (Oral Biol Res) Vol.46 No.4
Aberrant wound closure occurs in a broad range of wounds and scars, and the altered regulation of transcription factors in wound areas can account for both of those conditions. This study aimed to explore the function of the transcription factor Smad3 in wound healing using a tongue wound model in Smad3 knockout (Smad3–/–) mice and with Smad3 small interfering RNA (siRNA) transfected human gingival fibroblasts (HGFs). Smad3 –/–mice were used to examine the extent of repair in tongue wounds. Cell migration was evaluated in HGFs using wound healing assays. The mRNA expression levels of Sox2, E-cadherin, fibronectin, and vimentin were examined in HGFs using reverse transcription-quantitative polymerase chain reaction. Histopathological analysis of wound closure in Smad3–/– mice showed rapid re-epithelialization and remodeling in tongue wound repair compared with Smad3+/+ mice. Increased numbers of neutrophils were identified in the wounds of Smad3 –/– mice. Sox2 and phospho-E-cadherin expression levels were increased in Smad3–/– mice. Smad3 knockdown by siRNA increased cell migration of HGFs. In addition, Sox2, E-cadherin, fibronectin, and vimentin mRNA levels were significantly increased in Smad3 siRNA-transfected HGFs compared with controls. Collectively, these findings demonstrate that a Smad3 deficiency can expedite wound healing and increase immune reactions and extracellular matrix formation after tongue injuries, boosting recovery through Sox2 and E-cadherin. Consequently, Smad3 inhibition would help stimulate tongue wound healing.
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PD-L1 expression correlated with p53 expression in oral squamous cell carcinoma
Tojyo, Itaru,Shintani, Yukari,Nakanishi, Takashi,Okamoto, Kenjiro,Hiraishi, Yukihiro,Fujita, Shigeyuki,Enaka, Mayu,Sato, Fuyuki,Muragaki, Yasuteru Korean Association of Maxillofacial Plastic and Re 2019 Maxillofacial Plastic Reconstructive Surgery Vol.41 No.-
Background: Programmed cell death ligand 1 (PD-L1) is an immune checkpoint molecule that attenuates the immune response. PD-L1 contributes to failed antitumor immunity; thereby, blockade of PD-L1 with monoclonal antibody enhances the immune response. Recently, it was reported that PD-L1 was regulated by protein 53 (p53). Besides, cytokeratin 17 (CK17) is thought to be a diagnostic marker of oral squamous cell carcinoma (OSCC). Our aim was to evaluate the correlation between the immunohistochemical expression of PD-L1, p53 and CK17 with clinicopathological characteristics and disease-specific survival in patients with OSCC. Methods: A total of 48 patients with OSCC were included in this study. Immunohistochemical staining was performed to evaluate the correlation among the expressions of PD-L1, p53 and CK17, and furthermore the correlation among various clinicopathological factors, PD-L1, p53 and CK17. Results: The positive rate of p53, CK17, PD-L1 (tumor cells) and PD-L1 (tumor-infiltrating lymphocytes) was 63.2%, 91.7%, 48.9% and 57.1%. A statistically significant correlation between p53 expression and T stage and TNM stage (p = 0.049, p = 0.03, respectively) was observed. Also, a statistically significant correlation between p53 and PD-L1 (TCs) expression (p = 0.0009) was observed. Five-year disease-specific survival rate was not significantly correlated with gender, TNM stage, p53 expression, PD-L1 expression and CK17 expression. Conclusion: The expression of p53 and PD-L1 shows significantly positive correlation in oral squamous cell carcinoma in tumor cells. Also, a significant correlation between p53 expression and T stage and TNM stage was observed. No other significant correlation between PD-L1 staining or CK17 and clinical or pathologic characteristics was identified.
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