絲狀噬菌體呈現(xiàn)顆粒的免疫特性和抗原遞呈途徑研究
發(fā)布時(shí)間:2020-12-03 06:23
對于多細(xì)胞生物而言,高度有序的有機(jī)體時(shí)刻面對各種有害因子的侵襲,這種進(jìn)化壓力促使機(jī)體形成復(fù)雜有效的免疫系統(tǒng)。針對各種免疫原,免疫系統(tǒng)提供了靈活、動態(tài)的特異性反應(yīng)機(jī)制。這些控制疾病的免疫機(jī)制包括:誘導(dǎo)免疫原特異性的中和性抗體,以及擴(kuò)增、分化抗原特異性調(diào)節(jié)和效應(yīng)T細(xì)胞。其中抗體可阻礙病毒感染、介導(dǎo)殺菌效應(yīng)和中和細(xì)菌毒素,輔助性T細(xì)胞則通過生物活性分子導(dǎo)致炎癥、刺激巨噬細(xì)胞吞噬和輔助細(xì)胞毒性T細(xì)胞(CTL)應(yīng)答。然而,抗體和輔助性T細(xì)胞并不能清除腫瘤和病毒感染細(xì)胞,在這種情況下,細(xì)胞毒性T細(xì)胞成為機(jī)體主要防御機(jī)制,其通過穿孔素溶細(xì)胞效應(yīng)和Fas配體介導(dǎo)異常細(xì)胞死亡。但不幸的是大多數(shù)傳統(tǒng)疫苗形式并不能有效激發(fā)CTL應(yīng)答,這已成為發(fā)展病毒感染疾病和腫瘤免疫治療方案的主要障礙。 為誘導(dǎo)CTL應(yīng)答,免疫學(xué)家嘗試了大量疫苗策略。根據(jù)抗原遞呈途徑,這些CD8+T細(xì)胞疫苗可分為兩類,一類是修飾后的細(xì)胞,這包括融合細(xì)胞疫苗、抗原負(fù)載的樹突狀細(xì)胞和表達(dá)共刺激分子的體細(xì)胞,這類疫苗可能不需專職APC遞呈而直接誘導(dǎo)CTL應(yīng)答,已經(jīng)獲得了令人鼓舞的數(shù)據(jù),特別是肽負(fù)載樹突狀細(xì)胞,但是這類免疫策略需要離體培養(yǎng)細(xì)胞...
【文章來源】:中國人民解放軍陸軍軍醫(yī)大學(xué)重慶市
【文章頁數(shù)】:91 頁
【學(xué)位級別】:博士
【文章目錄】:
Abbreviations
Summary
Chapter 1 Induction of Hepatitis B Virus-specific cytotoxic T lymphocyte response in vivo by recombinant filamentous phage particle
1 Introduction
2 Materials and Methods
3 Results
4 Discussion
5 References
6 Figures
Chapter 2 Phage display particles expressing tumor-specific antigens induce preventive and therapeutic anti-tumor immunity in murine P815 model
1 Introduction
2 Materials and Methods
3 Results
4 Discussion
5 References
6 Figures
Chapter 3 Generation of large quantities of intracellular MHC class I-peptide complexes in MHC class Ⅱ positive compartments
1 Introduction
2 Materials and Methods
3 Results
4 Discussion
5 References
6 Figures
Acknowledgements
Summary (in Chinese)
Review (in Chinese)
本文編號:2896126
【文章來源】:中國人民解放軍陸軍軍醫(yī)大學(xué)重慶市
【文章頁數(shù)】:91 頁
【學(xué)位級別】:博士
【文章目錄】:
Abbreviations
Summary
Chapter 1 Induction of Hepatitis B Virus-specific cytotoxic T lymphocyte response in vivo by recombinant filamentous phage particle
1 Introduction
2 Materials and Methods
3 Results
4 Discussion
5 References
6 Figures
Chapter 2 Phage display particles expressing tumor-specific antigens induce preventive and therapeutic anti-tumor immunity in murine P815 model
1 Introduction
2 Materials and Methods
3 Results
4 Discussion
5 References
6 Figures
Chapter 3 Generation of large quantities of intracellular MHC class I-peptide complexes in MHC class Ⅱ positive compartments
1 Introduction
2 Materials and Methods
3 Results
4 Discussion
5 References
6 Figures
Acknowledgements
Summary (in Chinese)
Review (in Chinese)
本文編號:2896126
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