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Chapter 4<br />

Chiral PNA application on surface: Arginine-based PNA<br />

microarrays for ApoE genotyping<br />

In this chapter PNAs containing a 2D-5L arginine monomer are utilized in diagnostic<br />

applications on surface. The design and synthesis of the modified PNAs by submonomeric<br />

strategy are described. The probes have been designed targeting sequences contained in the<br />

human gene coding for ApoE (a protein related to the cholesterol metabolism), in order to<br />

recognize six different genotypes corresponding to SNPs present in two different positions<br />

and related to the risk of the Alzheimer disease onset. After the synthesis, an innovative<br />

application is described, consisting in the fabrication of microarrays bearing chiral PNAs for<br />

a fast and precise genotype characterization.<br />

73

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