Isolation of Tobacco Mosaic Virus-Binding Peptides for Biotechnology Applications.

Isolation of Tobacco Mosaic Virus-Binding Peptides for Biotechnology Applications.
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DOI:
10.1002/cbic.202200040
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发表时间:
2022-06-03
期刊:
影响因子:
3.2
通讯作者:
Steinmetz, Nicole F.
Steinmetz, Nicole F.
中科院分区:
生物学3区
文献类型:
--
作者:
Chan, Soo Khim;Steinmetz, Nicole F.

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烟草花叶病毒(TMV)是第一个被发现的病毒,它现在被广泛用作生物研究和生物技术应用的工具。通过基因工程或生物接合,可以用功能分子修饰TMV颗粒。然而,这可能使纳米颗粒不稳定,和/或可能需要多轮修饰,从而降低产物产率并阻止某些货物分子的展示。为了克服这些挑战,我们使用噬菌体展示技术和生物淘选来分离具有强结合特性(IC 50 = 0.73 μM,KD = 0.16 μM)的TMV结合肽(TBPT 25),允许通过单个混合步骤展示模型货物。TMV结合肽对TMV具有特异性,但不识别游离外壳蛋白,因此可用于修饰完整的TMV或检测天然植物汁液中的完整TMV颗粒。生物淘选导致TMV结合肽的鉴定,所述TMV结合肽可用于诊断测定以检测植物汁液中的TMV或用于生物技术应用,例如向用作纳米载体的TMV添加功能部分。
Tobacco mosaic virus (TMV) was the first virus to be discovered and it is now widely used as a tool for biological research and biotechnology applications. TMV particles can be decorated with functional molecules by genetic engineering or bioconjugation. However, this can destabilize the nanoparticles, and/or multiple rounds of modification may be necessary, reducing product yields and preventing the display of certain cargo molecules. To overcome these challenges, we used phage display technology and biopanning to isolate a TMV-binding peptide (TBPT25) with strong binding properties (IC50 = 0.73 μM, KD = 0.16 μM), allowing the display of model cargos via a single mixing step. The TMV-binding peptide is specific for TMV but does not recognize free coat proteins and can therefore be used to decorate intact TMV or detect intact TMV particles in crude plant sap. Biopanning led to the identification of TMV-binding peptides that can be utilized for diagnostic assays to detect TMV in plant sap or for biotechnology applications such as adding functional moieties to the TMV used as nanocarrier.
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