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国家自然科学基金(81101191)

作品数:4 被引量:13H指数:2
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相关机构:华中科技大学更多>>
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CD109的研究进展被引量:2
2013年
CD109是一种细胞表面抗原,为糖基化磷脂酰肌醇(glycosyl phosphatidylinositol,GPI)联结的糖蛋白,属于含硫酯的α2巨球蛋白/补体C3、C4、C5超家族。CD109是TGF-β/Smads信号通路中新的辅助受体,在人类角质形成细胞中CD109可负性调节TGF-β信号。最新研究表明,CD109在某些肿瘤和皮肤疾病的发生、发展中发挥着重要作用,已成为当前研究的热点。
刘欣欣冯爱平陈善娟
关键词:肿瘤信号传导角质形成细胞
Expression of USP15, TβR-Ⅰand Smad7 in Psoriasis
2014年
Summary: The deubiquitinating enzyme ubiquitin specific peptidase 15 (USP15) is regarded as a regulator of TGFβ signaling pathway. This process depends on Smad7, the inhibitory factor of the TGFβ signal, and type Ⅰ TGFβ receptor (TβR- Ⅰ ), one of the receptors of TGFβ. The expression level of USP 15 seems to play vital roles in the pathogenesis of many neoplasms, but so far there has been no report about USP15 in psoriasis. In this study, immunohistochemical staining of USP15, TβR- Ⅰ and Smad7 was performed in 30 paraffin-embedded psoriasis specimens and 10 normal specimens to investigate the expression of USP15, TβR- Ⅰ and Smad7 in psoriasis and to explore the relevance among them. And USP 15 small interfering RNA (USP 15 siRNA) was used to transfect Hacat cells to detect the mRNA expression of TβR- Ⅰ and Smad7. Of 30 cases of psoriasis in active stage, 28, 24 and 26 cases were positive for USP15, TβR- Ⅰ and Smad7 staining, respectively. The positive rates of USP15 and Smad7 were significantly higher in psoriasis specimens than in normal skin specimens (44.1%±26.0% vs. 6.1%±6.6%, 47.2%±27.1% vs. 6.6%±7.1%), and positive rate of TβR- I (20.3%±22.2%) in psoriasis was lower than that in normal skin specimens (46.7%±18.2%). There was a significant positive correlation between USP15 and Smad7 expression, and significant negative correlations between USP15 and TβR- Ⅰ expression, and between TβR- Ⅰ and Smad7 expression in psoriasis. After transfection of USP15 siRNA in Hacat ceils, the expression ofTβR- Ⅰ mRNA was up-regulated and that of Smad7 was down-regulated. It is concluded that USP15 may play a role in the pathogenesis of psoriasis through regulating the TβR- Ⅰ/Smad7 pathway and there may be other cell signaling pathways interacting with USP 15 to take part in the development of psoriasis.
冯爱平和义敏刘欣欣李家文涂亚庭胡枫陈善娟
关键词:PSORIASISSMAD7
去泛素化酶在皮肤病的研究进展
2013年
去泛素化酶家族种类繁多,分布于人体多种器官及组织,是泛素-蛋白酶体途径的重要组成部分,精细调控真核细胞生物细胞内蛋白的降解。A20、CYLD、泛素特异性加工酶7等去泛素化酶通过与外异蛋白受体、Fas相关的死亡区蛋白、B细胞淋巴因子-3、核因子-KB抑制蛋白激酶等因子相互作用,可参与银屑病、皮肤基底细胞癌、皮肤鳞状细胞癌、皮肤附属器肿瘤、Kaposi肉瘤以及恶性黑素瘤等皮肤疾病的发生发展。探讨去泛素化酶作用机制,有助于为炎症及肿瘤性皮肤病提供新的治疗靶点。
和义敏冯爱平陈善娟
关键词:皮肤疾病
IL-36 Cytokine Expression and Its Relationship with p38 MAPK and NF-κB Pathways in Psoriasis Vulgaris Skin Lesions被引量:11
2013年
Summary: This study examined the correlation of the expression of interleukin-36 (IL-36), a novel member of interleukin-1 (IL-1) family, with p38 mitogen-activated protein kinase (p38 MAPK) and nu clear factor-kappa B (NF-kB) pathways in psoriasis vulgaris skin lesions. The expression levels of IL-36a, IL-3613, IL-367, phosphorylated p38 MAPK, and NF-id3p65 were detected in the skin tissues of 38 psoriasis patients and 17 healthy control subjects by real-time quantitative reverse transcription po lymerase chain reaction (qRT-PCR) and Western blotting. The cytokine expression levels were com pared between the psoriasis group and the control group. A correlation analysis between cytokine pro teins was performed in the psoriasis group. Results showed that the expression levels of IL-36a, IL-3613, IL-36y, phosphorylated p38 MAPK and NF-rh3p65 in the psoriasis group were Significantly higher than those in the control group (P〈0.001). In the psoriasis group, the IL-36 cytokine expression was positively correlated with phosphorylated p38 MAPK and NF-kBp65 expression (P〈0.05). A significant positive correlation was also found between the phosphorylated p38 MAPK and NF-v,.Bp65 expression (P〈0.01). It was concluded that the increased IL-36 expression is correlated with p38 MAPK and NF-kB pathways in psoriasis vulgaris skin lesions. All the three factors may be jointly involved in the pathogenesis and local inflammatory response of psoriasis.
贺琪陈宏翔李雯吴艳陈善娟岳青肖敏李家文
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