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Informative diagnostics for personalized medicine
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For newly discovered proteomic biomarkers, the development of stable and high-affinity capture agents represents a substantial hurdle—one that chemical biologists are uniquely suited to attack. Monoclonal antibodies are the most commonly used capture agent for immunoassays, and although advances in hybridoma technology have led to the commercial availability of many thousands of antibodies, the cost and production time required to generate high-quality monoclonal antibodies against emerging biomarkers is often rate limiting. As substitutes for antibodies that feature more facile generation and improved stability, several alternative capture agents have been explored16, including aptamers17 and multivalent peptide scaffolds18, among many other exciting prospects. Chemical biologists have pioneered new strategies to develop capture agents and will continue to do so, given their aptitude in techniques such as ligand selection (for example, systematic evolution of ligands by exponential enrichment, or SELEX), library syntheses and bead-based screening approaches. |
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| 相對于新發(fā)現(xiàn)的蛋白質(zhì)生物標(biāo)記物,穩(wěn)定并且有高親和力的捕獲劑的開發(fā)代表了實(shí)質(zhì)性的突越--這個突越化學(xué)生物學(xué)家非常適于攻克。在免疫分析中單克隆抗體是運(yùn)用最普遍的捕獲劑。盡管雜交瘤技術(shù)的發(fā)展已經(jīng)使得成千上萬個抗體為工業(yè)所用。但是相對于新興的生物標(biāo)記物,生產(chǎn)高質(zhì)量的單克隆抗體成本和生產(chǎn)時間經(jīng)常是有速率限制的。至于那種以更加易制取并且改善穩(wěn)定性為特征的抗體取代物,在很多其它振奮人心的預(yù)期中,一些可供選擇的捕獲劑已經(jīng)開發(fā)出來。包括寡核苷酸適配子和多原子的縮氨酸骨架,考慮到他們的技術(shù)中的天資比如配體的選擇(比方說,呈指數(shù)增加的配體系統(tǒng)的演變,或者是SELEX) 實(shí)驗(yàn)室合成以及磁珠篩選方法,化學(xué)生物學(xué)家已經(jīng)提出新的戰(zhàn)略來研發(fā)捕獲劑并且會繼續(xù)這樣做。 |
木蟲 (正式寫手)
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樓上的語句實(shí)在晦澀難懂! 對于新發(fā)現(xiàn)的蛋白質(zhì)生物標(biāo)記物,研究的關(guān)鍵在于開發(fā)穩(wěn)定、高親和力的捕獲劑,這完全得由化學(xué)生物學(xué)家來完成。在免疫性測定中,盡管雜交瘤技術(shù)的發(fā)展已經(jīng)使得成千上萬個抗體商業(yè)應(yīng)用,但是應(yīng)用最普遍的捕獲劑是單克隆抗體。與新興的生物標(biāo)記物相比,生產(chǎn)高質(zhì)量的單克隆抗體成本和生產(chǎn)時間經(jīng)常是受限于其生產(chǎn)速率。在其它很多令人興奮的期望中,一些可替換的捕獲劑作為更易于生產(chǎn)與改善穩(wěn)定性的抗體替換產(chǎn)品,已經(jīng)被開發(fā)出來,包括寡核苷酸適配子和多原子的縮氨酸骨架。 由于化學(xué)生物學(xué)家在配體的選擇(比方說,呈指數(shù)增加的配體系統(tǒng)的演變,或者是SELEX) 實(shí)驗(yàn)室合成以及磁珠篩選方法方面有他們的優(yōu)勢,因此化學(xué)生物學(xué)家一直前瞻性地提出新的策略來研發(fā)捕獲劑并且會繼續(xù)在這方面的研究中發(fā)揮他們的聰明才智。 |
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