血管活性腸肽在黑色素生成過程中的作用及相關機制研究
發(fā)布時間:2021-05-12 07:00
血管活性腸肽(Vasoactive intestinal peptide,簡稱VIP)是組成皮膚神經(jīng)肽的重要成員之一,在不同的生物學條件下可由分布于表皮、基底層、真皮、汗腺以及毛囊等部位的感覺及自主神經(jīng)末梢分泌。VIP是屬于胃泌素/分泌素/胰高血糖素家族的分泌型多肽,由28個氨基酸組成并與有不同結(jié)構(gòu)特點的G蛋白偶聯(lián)受體-VIP受體1(VIP receptor 1,VIPR1)及VIPR2結(jié)合。VIP/VIPR系統(tǒng)的激活可介導血管擴張、血漿外滲、肥大細胞脫顆粒、免疫調(diào)節(jié)等多方面的生理過程。有研究報道VIP在特應性皮炎、銀屑病等炎癥性皮膚病的發(fā)病機制中起到重要的作用,而炎癥性皮膚病的恢復期往往會導致炎癥后色素沉著(Postinflammatoryhyperpigmentation,PIH)。目前有關 VIP 在黑色素生成過程中的作用方面研究尚未見報道。目的:探討血管活性腸肽在黑色素生成過程中的作用以及相關機制。方法:1)利用VIP處理小鼠黑素瘤B16F10細胞,并以不同濃度分析細胞活性、黑色素含量,在不同時間段測定酪氨酸酶活性;2)分別利用RNA逆轉(zhuǎn)錄合成cDNA試驗、實時定量聚合酶鏈反應...
【文章來源】:延邊大學吉林省 211工程院校
【文章頁數(shù)】:91 頁
【學位級別】:博士
【文章目錄】:
摘要
Abstract
Abbreviations
1. Introduction
2. Materials and methods
2.1 Antibodies and reagents
2.2 Cell culture
2.3 Cell viability assay
2.4 Melanin content measurement
2.5 Tyrosinase activity assay
2.6 Reverse transcription and real-time quantitative polymerase chain reaction
2.7 Western blotting
2.8 Gene silencing with siRNA
2.9 Statistical analysis
3. Results
3.1 VIP does not have cytotoxic effect on B16F10 cells
3.2 VIP increases melanin synthesis in B16F10 cells
3.3 VIP increases tyrosinase activity in B16F10 cells
3.4 VIP increases protein expression of MITF and tyrosinase in B16F10 cells
3.5 VIP increases mRNA expression of MITF and tyrosinase in B16F10 cells
3.6 VIP induces activation of CREB and PKA, but not p38 MAPK, Akt, or ERKphosphorylation in B16F10 cells
3.7 Suppression of the CREB pathway attenuated VIP induced stimulation ofmelanogenesis in B16F10 cells
3.8 Expression of VIP receptors in B16F10 cells
3.9 VIP induces melanogenesis in human epidermal melanocytes
4. Discussion
5. Conclusions
References
Review Paracrine regulation of melanogenesis
References
Acknowledgements
附錄A:攻讀學位期間發(fā)表的論文
附錄B:攻讀學位期間參加的學術活動
本文編號:3182964
【文章來源】:延邊大學吉林省 211工程院校
【文章頁數(shù)】:91 頁
【學位級別】:博士
【文章目錄】:
摘要
Abstract
Abbreviations
1. Introduction
2. Materials and methods
2.1 Antibodies and reagents
2.2 Cell culture
2.3 Cell viability assay
2.4 Melanin content measurement
2.5 Tyrosinase activity assay
2.6 Reverse transcription and real-time quantitative polymerase chain reaction
2.7 Western blotting
2.8 Gene silencing with siRNA
2.9 Statistical analysis
3. Results
3.1 VIP does not have cytotoxic effect on B16F10 cells
3.2 VIP increases melanin synthesis in B16F10 cells
3.3 VIP increases tyrosinase activity in B16F10 cells
3.4 VIP increases protein expression of MITF and tyrosinase in B16F10 cells
3.5 VIP increases mRNA expression of MITF and tyrosinase in B16F10 cells
3.6 VIP induces activation of CREB and PKA, but not p38 MAPK, Akt, or ERKphosphorylation in B16F10 cells
3.7 Suppression of the CREB pathway attenuated VIP induced stimulation ofmelanogenesis in B16F10 cells
3.8 Expression of VIP receptors in B16F10 cells
3.9 VIP induces melanogenesis in human epidermal melanocytes
4. Discussion
5. Conclusions
References
Review Paracrine regulation of melanogenesis
References
Acknowledgements
附錄A:攻讀學位期間發(fā)表的論文
附錄B:攻讀學位期間參加的學術活動
本文編號:3182964
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