食源性多肽對細胞遷移作用機制研究
[Abstract]:The food-derived peptide is a small-molecular-peptide mixture which is prepared by using an edible protein as a raw material, using a process such as protease enzymolysis, separation and purification, and the like. The source of the food-derived peptide is wide, and is mainly divided into the animal source protein peptide and the plant source protein peptide according to the difference of the source of the protein raw material. In recent years, the research on the activity of food-derived peptides mainly focuses on the biological activities such as anti-oxidation, blood pressure lowering and bacteriostasis, and has little research on cell migration and invasion. Therefore, in this study, the effect of functional peptides from two different sources on cell migration was investigated by using soybean and egg white as a source. We first use the computer to simulate the hydrolysis of the soybean protein with the trypsin/ pepsin, produce a series of polypeptide fragments, and then, according to the size of the free energy consumed by the Hsp90, the five soybean protein peptide sequences with the lowest consumption can be obtained. The effect of five soybean protein peptides on the migration of MIAPaCa-2 in pancreatic cancer cells was investigated by means of scratch. The results showed that the seven-peptide Leu-Val-Thr-Val-Pro-Gln-Phe (LVTVPQF) had an inhibitory effect on the migration of MIAPaCa-2 cells. Transwell's experimental results further confirmed the inhibitory effect of LVTVPQF on the migration of MIAPaCa-2 cells. At the same time, we confirmed that LVTVPQF had no effect on the growth and proliferation of cells by cell proliferation assay, i.e. no cytotoxicity. In addition, by using Western-Blot to detect the change of protein level, it was shown that LVTVPQF inhibited the level of extracellular secretion type Hsp90 and its downstream MMP-9 level in a concentration-dependent manner, and there was no inhibition of Hsp90 and its client protein AKT and CDK4 in the cells. The above results show that the protein-derived peptide LVTVPQF plays a role in inhibiting the cell migration of pancreatic cancer by inhibiting the expression of the secreted Hsp90 antigen and the downstream matrix MMP-9. In that follow, the egg white concentrated protein powder is taken as a raw material, an Alcalase alkaline protease and a flavor protease are adopted to solve the egg white concentration protein powder, the enzymolysis liquid is intercepted by the ultrafiltration membrane, and the mixed component EWPH1 and the EWPH1 (ultrafiltration) component have no toxicity to the HaCaT cell through the MTS experiment. The better component EWPH1 (ultrafiltration) was selected for subsequent purification and cell migration through the screening of the scratch callus and the Transwell test. The components of EWP1, EWP2, EWP3 and EWP4 were separated and purified by the sephadex G-15 to obtain the four components of EWP1, EWP2, EWP3 and EWP4. EWP2 was analyzed by LC-MS to obtain the amino acid sequence of the polypeptide contained in EWP2, and the nine-peptide Lys-Pro-His-Ala-Glu-Val-Val-Leu-Arg (KPHAEVVLR) was synthesized. The MTS experiment shows that the KPHAEEVVLR has the effect of promoting the proliferation of the skin fibroblast HSF, and the Transwell experimental results confirm that the KPHAVEVVLR can promote the migration of the HSF cells. In this study, we selected two kinds of food-derived peptides of soybean peptide and egg white peptide to study the effects of inhibiting the migration of pancreatic cancer cells and promoting the healing of skin wound, respectively. On the one hand, we found that soybean peptides inhibit the migration of pancreatic cancer cells by affecting the expression of secreted Hsp90 and downstream MMP-9. On the other hand, we isolated the 9-peptide KPHAGEVVLR from the egg white peptidase solution and demonstrated that it can promote the proliferation and migration of the skin fibroblasts HSF. The results of these experiments show that the food-derived peptide has high research potential and research value in regulating cell migration, and also provides a theoretical basis and reference value for developing a new type of regulatory cell migration type food source peptide product.
【學(xué)位授予單位】:吉林大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:R151
【相似文獻】
相關(guān)期刊論文 前10條
1 秦建華;陳明;;p38絲裂原活化蛋白激酶與細胞遷移[J];瀘州醫(yī)學(xué)院學(xué)報;2006年02期
2 孫晉浩,高波;淋巴細胞遷移在某些疾病中的意義[J];四川解剖學(xué)雜志;1998年01期
3 張迪;;細胞遷移機制研究獲進展[J];前沿科學(xué);2012年02期
4 王淑華,胡京紅,盧詠才;人主動脈平滑肌細胞對淋巴細胞遷移的影響[J];中華病理學(xué)雜志;1996年01期
5 梁光波,張國平,金惠銘,湯大侃;體外定量測定細胞遷移方法的建立及應(yīng)用[J];中國病理生理雜志;2004年02期
6 蘆曙輝,王玉琦;細胞遷移機制的研究進展[J];中國臨床醫(yī)學(xué);2003年06期
7 方海林,邵傳森,李敏偉,張立煌;肝細胞生長因子誘導(dǎo)CCL-64細胞遷移及其受TGF-β1的影響[J];中國應(yīng)用生理學(xué)雜志;1999年04期
8 梁光波,張國平,金惠銘;堿性成纖維細胞成長因子對ECV304細胞遷移的影響(英文)[J];中國病理生理雜志;2005年01期
9 李春蕊;焦點粘附物及其在細胞遷移中的作用[J];國外醫(yī)學(xué)(生理、病理科學(xué)與臨床分冊);2002年06期
10 梁光波,張國平,金惠銘,錢睿哲;粘著斑激酶在bFGF引起細胞遷移中的動態(tài)變化及意義[J];生理學(xué)報;2004年04期
相關(guān)會議論文 前5條
1 林金秀;吳可貴;詹熙;;腫瘤轉(zhuǎn)移消失蛋白對細胞遷移的影響及其機制[A];中華醫(yī)學(xué)會心血管病分會第八次全國心血管病學(xué)術(shù)會議匯編[C];2004年
2 吳金丹;洪一峰;毛崢偉;高長有;;材料表面堿性成纖維生長因子密度對細胞遷移的影響研究[A];2011年全國高分子學(xué)術(shù)論文報告會論文摘要集[C];2011年
3 張德玲;歐陽靜萍;張亞輝;別婧華;;AKAP對PDGF誘導(dǎo)的細胞遷移的調(diào)控作用[A];第六屆海峽兩岸心血管科學(xué)研討會論文摘要集[C];2007年
4 田林杰;綦輝;郭曉歡;李婷;張穎妹;王應(yīng);馬大龍;;CKLF1 C端肽抑制CCR3、CCR5和CXCR4所介導(dǎo)的細胞遷移[A];第六屆全國免疫學(xué)學(xué)術(shù)大會論文集[C];2008年
5 高金珉;孫蕾;霍麗紅;劉敏;李登文;周軍;;CYLD對微管動態(tài)性、細胞遷移及血管新生的調(diào)節(jié)[A];遺傳學(xué)與社會可持續(xù)發(fā)展——2010中國青年遺傳學(xué)家論壇論文摘要匯編[C];2010年
相關(guān)重要報紙文章 前6條
1 馬佳;中國科學(xué)家發(fā)現(xiàn)細胞遷移秘密[N];北京科技報;2008年
2 海迅;我國學(xué)者發(fā)現(xiàn)細胞遷移的重要調(diào)節(jié)機制[N];中國醫(yī)藥報;2008年
3 耿挺;誰在控制細胞遷移[N];上?萍紙;2008年
4 康言;博奧生物細胞芯片實驗研究獲重要進展[N];中國醫(yī)藥報;2008年
5 常麗君;新研究發(fā)現(xiàn)指導(dǎo)細胞遷移的深層機制[N];科技日報;2012年
6 記者 張巍巍;科學(xué)家記錄到胚胎細胞遷移路徑[N];科技日報;2008年
相關(guān)博士學(xué)位論文 前5條
1 邢博文;Gα_(13)在細胞遷移和器官再生中的功能研究[D];武漢大學(xué);2014年
2 楊浩;應(yīng)用光鑷細胞操作系統(tǒng)研究細胞遷移模型及細胞遷移控制[D];中國科學(xué)技術(shù)大學(xué);2015年
3 吳金丹;接枝密度梯度表面的構(gòu)建及其對細胞遷移行為的調(diào)控[D];浙江大學(xué);2012年
4 張德玲;VASP磷酸化對細胞遷移的影響及其調(diào)控機制[D];武漢大學(xué);2010年
5 萬萍;Exocyst的一個亞基Sec3促進果蠅卵巢邊界細胞遷移的分子機制[D];南京大學(xué);2012年
相關(guān)碩士學(xué)位論文 前10條
1 鄭淑蓉;幽門螺桿菌CagA與YWHAE相互作用對細胞遷移的影響[D];福建醫(yī)科大學(xué);2015年
2 張明慧;人視網(wǎng)膜色素上皮細胞中slit2基因?qū)F/6A細胞遷移及管腔形成的影響[D];重慶醫(yī)科大學(xué);2015年
3 田云麗;雙功能細胞遷移小室微器件的構(gòu)建及其在腫瘤生物學(xué)研究中的應(yīng)用[D];西南大學(xué);2016年
4 謝哲;藁本內(nèi)酯對c-Myc/MMP信號通路介導(dǎo)A7r5細胞遷移中的作用[D];廣東藥科大學(xué);2016年
5 谷娟;TGF-β通過TAGLN2誘導(dǎo)食管鱗癌EC9706細胞遷移和浸潤[D];河南大學(xué);2016年
6 陳瑩;食源性多肽對細胞遷移作用機制研究[D];吉林大學(xué);2017年
7 莊海;siRNA干擾HB_X基因?qū)epG2.2.15細胞遷移的影響[D];遵義醫(yī)學(xué)院;2013年
8 陸毅卿;NudC對細胞遷移的作用及其分子機制研究[D];浙江大學(xué);2011年
9 郭宇光;Myosin X參與NLT細胞遷移和極性的確立[D];東北師范大學(xué);2010年
10 高倩倩;Myosin X調(diào)節(jié)細胞遷移的初步研究[D];東北師范大學(xué);2008年
,本文編號:2492023
本文鏈接:http://www.sikaile.net/yixuelunwen/yufangyixuelunwen/2492023.html