细胞描述：
人原代口腔成纤维细胞分离自正常口腔黏膜组织， 主要来自口腔黏膜固有层组织， 该细胞用于口腔相关疾病 机制研究。
细胞特性：
1） 来源：人的，正常口腔黏膜组织
2） 形态：不规则，成纤维细胞样， 贴壁生长
3） 规格：5×105cells
4） 培养条件：成纤维细胞培养体系（推荐培养基：AW-MC027）
空气，95%；二氧化碳，5%
37℃
5）鉴定：免疫荧光检测Vimentin阳性 ，纯度＞90%。
6）传代： 细胞预计可以传4-6代。
细胞接收后的处理：
1） 收到细胞后，活细胞首先观察培养瓶是否完好，培养液是否漏液，培养基是否浑浊；冻存细胞是否干冰已挥发完，冻存管盖是否脱落，破碎，若有这类情况，请务必拍照记录，并于收货24h内与我们联系。
2） 细胞处理：
复苏的细胞：如果是T-25培养瓶活细胞，收到后请用75%的酒精对培养瓶表面进行消毒处理，然后转入培养箱中静置2~3h后再进行后续处理。
备注：运输用的培养基不宜再次用来培养细胞，请按照说明书新配置完全培养基来培养细胞。
冻存细胞：如果是干冰运输的冻存细胞，收到后请立即转入液氮存储或者短暂（24h）放置-80度冰箱保存，或者直接进行细胞复苏。
细胞复苏、传代及冻存流程参考：
1、 细胞复苏
1） 配制完全培养基：基础培养基+胎牛血清+双抗（特殊培养基特殊配置）；
2） 细胞复苏：取5ml完全培养基于15ml离心管中，37℃水浴锅预热，从液氮管（或者-80度冰箱）中快速取出冻存的细胞，放入37℃水浴锅中，摇晃使快速化冻（1min左右），然后将化冻的细胞和预热的培养基，移入超净工作台中，化冻的细胞加入到含预热培养基的15ml离心管中，1000rpm离心5min；
3） 吸弃上清，得到细胞沉淀，用2ml完全培养基轻轻重悬细胞，加入到T25培养瓶中，做好标记，放入37℃，5%CO2饱和适度培养箱中培养（培养皿复苏效果更好）；
4） 24h后，观察细胞贴壁情况（未贴壁的即为死细胞--针对贴壁细胞），吸弃旧培养基，加入新鲜的预热（室温或37℃）的完全培养基，继续培养。
2、 细胞传代
1） 待细胞生长到80%-90%汇合度时，吸弃旧的培养基，加入1ml无菌PBS润洗一次，以去除残余的培养基及血清（血清含有胰酶的抑制因子），然后加入1ml 0.25%胰酶，37℃培养箱中消化（1~2min左右，不同细胞消化时间不同），取出细胞，镜下观察细胞至细胞皱缩变圆；
2） 加入1ml完全培养基（含FBS）终止消化，轻轻拍打，使细胞脱落下来成单个细胞悬液，收集细胞于15ml无菌离心管中，1000rpm，离心5min；
3） 收集细胞沉淀，完全培养基重悬，一分为二（可根据细胞生长速度调整比例），分别加入到2个新的培养瓶中，做好标记，放入培养箱中培养。
3、细胞冻存
1） 按照细胞传代方法，在超净工作台内消化收集细胞沉淀，取少量细胞用于计数；
2） 用预冷的1ml冻存液（90%完全培养基+10%DMSO）或者无血清细胞冻存液重悬细胞，加入到1.2ml冻存管中，密度为1*106个/ml。
3） 放入程序冻存盒，-80℃过夜后，转入液氮长期保存。
参考文献 (3)
Objective This work aims to investigate the mechanism of Jiawei Danxuan Koukang (JDK) and Quercetin in oral submucous fibrosis (OSF) carcinogenesis. Design We established an OSF model for rats by injecting Arecoline into the oral mucosa of rats to study the impact of JDK and Quercetin on the progression of OSF and OSCC. Then, the viability, proliferation, and migration ability of Arecoline-induced hOMF, CAL27 and SCC-25 cells in JDK and quercetin intervention were detected. Results The oral mucosal epithelial cells of OSF model and OSF rats were atrophy and thinning, α-SMA, CollageI, Vimentin, Snail, AR and eukaryotic translation initiation factor 5A2 (eIF5A2) expression increased apparently, and E-cadherin expression decreased. The intervention of JDK and Quercetin reversed the changes in oral mucosal epithelial cells and OSF rats. The levels of AR in CAL27 and SCC-25 cells were higher than those in hOMF cells, and Arecoline intervention increased the levels of AR in hOMF, CAL27 and SCC-25 cells. Overexpression of AR up-regulated eIF5A2 to enhance the viability, proliferation and migration of hOMF, CAL27 and SCC-25 cells, and promoted EMT. Quercetin reversed changes in cell feature, and EMT levels in oe-AR intervention. Conclusions JDK and Quercetin inhibited OSF carcinogenesis by inhibiting the AR/eIF5A2 signal-mediated EMT.
Oral submucous fibrosis (OSF) is an oral condition characterized by chronic progression, which may lead to the development of malignancy. Currently, available treatments for OSF only provide temporary relief of symptoms, and there is a limited availability of effective interventions that can effectively cure this condition. In this study, we aimed to investigate whether adiponectin (APN) could ameliorate OSF and the mechanisms involved in it. First, human oral mucosal fibroblasts (HOMFs) were cultured, an OSF model was established using arecoline, and APN and Imiquimod treatment were administered. Then we overexpressed NLRP3 and knocked down FOXO3A. FOXO3A, fibrosis-related factors (ɑ-SMA, COL1A, CTGF), TGF-β1/Smad3 signaling-related factors (TGF-β1, p-Smad3, Smad3), NLRP3 inflammasome-related factors (NLRP3, Caspase-1, IL-1β), and ROS levels were evaluated. Finally, we explored the effect of APN on OSF in mice by in vivo experiments. We found that arecoline significantly increased ɑ-SMA, COL1A, CTGF, and TGF-β1 expressions and promoted Smad3 phosphorylation, while APN significantly inhibited the elevation of these fibrosis-related factors. ROS production was significantly elevated in HOMFs after arecoline treatment, while APN treatment inhibited ROS production. However, the addition of Imiquimod and overexpression of NLRP3 exhibited a trend of elevated ROS, resisting the inhibitory effect of APN. Furthermore, adding Imiquimod and overexpression of NLRP3 elevated ɑ-SMA, COL1A and CTGF and activated TGF-β1/Smad3 signaling pathway. Additionally, knockdown of FOXO3A enhanced APN-inhibited ɑ-SMA and COL1A. In vivo experiments further confirmed that APN ameliorated OSF in mice by inhibiting ROS/NLRP3 inflammatory pathway. In conclusion, APN ameliorated arecoline-induced OSF by promoting FOXO3A expression and downregulating the ROS/NLRP3 pathway.
Oral submucous fibrosis (OSF) is a precancerous condition characterized by oral mucosal atrophy with fibrosis of the submucosal tissue. OSF has a high prevalence, and treatment requires improvement. Our study aims to investigate the role and mechanism of secreted frizzled-related protein 1 (SFRP1) in OSF. We constructed an arecoline-induced OSF mice model. Through Pearson’s correlation analysis, we investigated the association between SFRP1 levels and expressions of proteins related to the Wnt/β-catenin signaling pathway, as well as the correlation between SFRP1 levels and the degree of neutrophil infiltration. Moreover, neutrophil infiltration intensity, tissue fibrosis degree, and levels of β-catenin, Cyclin D1, and c-myc were evaluated after SFRP1 overexpression treatment through immunohistochemical and biochemical assays. A Wnt/β-catenin pathway activator was used to investigate the molecular mechanism of SFRP1 in the arecoline-induced OSF cell model. Compared with the control group, mice in the OSF group exhibited increased collagen deposition and more severe fibrosis in the oral mucosal tissue (OMT). In the OMT of OSF mice, the levels of SFRP1 were decreased. The levels of SFRP1 exhibited a negative correlation with the levels of Wnt/β-catenin proteins and neutrophil infiltration in the OMT. Upon SFRP1 overexpression, there was a reduction in neutrophil infiltration and fibrosis in the OMT, as well as inhibition of Wnt/β-catenin-related proteins. In vitro, the Wnt/β-catenin pathway activator further reversed the effect of SFRP1 overexpression on OSF. SFRP1 attenuates OSF by reducing neutrophil infiltration and inhibiting the Wnt/β-catenin pathway.
