synthetic antigen 中文意思是什麼
synthetic antigen
解釋
合成抗原-
Female mice serum and vaginal secretion antibodies, their fertility and the pathological changes were determined. on the other hand, the effects of the anti - serum against synthetic peptide on the sperm - egg interaction during ivf and the location of p3 peptide in sperm were watched. the main results and conclusions were as follows : 1 ) the new antigen p3 peptide which harvested from the 430a peptide synthesizer were verified by the mass spectrograph and hplc, that the ratio of mass / charge of the synthetic peptide was equal to the molecular weight in theory and its purity was above 95 %
本研究的主要結果和結論如下：一、經抗原分子設計，在430a自動肽合成儀上合成的新抗原p3 ，經質譜儀分析證明其荷質比與理論一致；純化后，其純度大於95 ；將新抗原與klh偶連后免疫小鼠，經westernblot證實其誘導的特異性抗體可識別小鼠、大鼠、人睪丸組織中分子量約為22kd和55kd左右的蛋白質。 -
This modification includes : ( 1 ) selecting two important molecules as candidates, ( 2 ) choosing a promiscuous t - cell epitope, and two b - cell epitopes or conserved amino acid sequences from the two important molecules, ( 3 ) connecting them adequately through analysis by the molecule designing software. therefore, the synthetic new antigen may interfere with the process of fertilization by multiple ways and its contraceptive effects may be enhancing. based on the molecule designing methods, the b - lymphocyte cell epitope of sperm / testis specific protein sp17 and cyritestin which interfere with fertilization in mouse, as well as the promiscuous th cell epitope of the ribonuclease ( rnase ) in bovine were selected
本研究以蛋白質分子設計的理論和方法研究避孕疫苗，將sp17和cyritestin關鍵表位和牛核糖核酸酶非選擇性th細胞表位合理組合，獲得新抗原- 35肽序列；並在合成、純化後分別與弗氏佐劑、免疫刺激復合物（ iscoms ）混合后免疫不同遺傳背景的雌性小鼠，觀察血清和生殖道內的特異性抗體滴度的動態變化、生育力的改變以及免疫后小鼠重要臟器的組織病理學改變：以及在ivf下，新抗原的特異性抗血清對精卵相互作用的影響及抗原在精子表面的特異性定位。 -
At present, in an attempt to stimulate specific antitumor immunity, experimental models and clinical studies are currently evaluating the potent antigen - presenting capacity of dc combined with single or multiple tumor antigen epitopes. however, there are several problems in utilizing pulsing dc with synthetic immunodominant peptides from identified antigens. 1 ) the potential induction of tolerance ; 2 ) the need to determine the patient ' s hla haplotype, the limitation of therapy to patients whose tumors express defined specific tumor antigens in the context of the correct hla phenotype, the unavailability of peptides for all hla haplotypes ; 3 ) the lack of cd4 help cell - related epitopes for most antigens ; and 4 ) the ctl resulting from such protocols have a good in vitro capacity to kill peptide - pulsed target cells but only a modest capacity to kill tumor cells
但是，學者們發現這一療法存在著如下的缺陷：單一ctl表位抗原肽的應用其抗腫瘤作用弱於多種腫瘤抗原的聯合應用，且有誘導免疫耐受的潛在危險，有時反而會促進腫瘤的生長；事先需對患者的hla單倍型進行鑒定，以確定ctl表位與hla單倍型是否匹配，目前尚缺乏能與所有hla單倍型相匹配的ctl表位，從而限制了這一療法的應用；這一療法所產生的ctl在體外能有效殺傷經腫瘤抗原肽共孵育過的靶細胞，但對腫瘤細胞的殺傷能力較弱：這種l表位抗原肽缺乏cd4汀h細胞相關的表位，因此，不能誘導有效的th細胞免疫應答。
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