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Beilstein J. Org. Chem. 2021, 17, 1641–1688, doi:10.3762/bjoc.17.116
Graphical Abstract
Figure 1: Structure of DNA and PNA.
Figure 2: PNA binding modes: (A) PNA–dsDNA 1:1 triplex; (B) PNA–DNA–PNA strand-invasion triplex; (C) the Hoog...
Figure 3: Structure of P-form PNA–DNA–PNA triplex from reference [41]. (A) view in the major groove and (B) view ...
Figure 4: Structures of backbone-modified PNA.
Figure 5: Structures of PNA having α- and γ-substituted backbones.
Figure 6: Structures of modified nucleobases in PNA to improve Hoogsteen hydrogen bonding to guanine and aden...
Figure 7: Proposed hydrogen bonding schemes for modified PNA nucleobases designed to recognize pyrimidines or...
Figure 8: Modified nucleobases to modulate Watson–Crick base pairing and chemically reactive crosslinking PNA...
Figure 9: Examples of triplets formed by Janus-wedge PNA nucleobases (blue). R1 denotes DNA, RNA, or PNA back...
Figure 10: Examples of fluorescent PNA nucleobases. R1 denotes DNA, RNA, or PNA backbones.
Figure 11: Endosomal entrapment and escape pathways of PNA and PNA conjugates.
Figure 12: (A) representative cell-penetrating peptides (CPPs), (B) conjugation designs and linker chemistries....
Figure 13: Proposed delivery mode by pHLIP-PNA conjugates (A) the transmembrane section of pHLIP interacting w...
Figure 14: Structures of modified penetratin CPP conjugates with PNA linked through either disulfide (for stud...
Figure 15: Chemical structure of C9–PNA, a stable amphipathic (cyclic-peptide)–PNA conjugate.
Figure 16: Structures of PNA conjugates with a lipophilic triphenylphosphonium cation (TPP–PNA) through (A) th...
Figure 17: Structures of (A) chloesteryl–PNA, (B) cholate–PNA and (C) cholate–PNA(cholate)3.
Figure 18: Structures of PNA–GalNAc conjugates (A) (GalNAc)2K, (B) triantennary (GalNAc)3, and (C) trivalent (...
Figure 19: Vitamin B12–PNA conjugates with different linkages.
Figure 20: Structures of (A) neomycin B, (B) PNA–neamine conjugate, and (C) PNA–neosamine conjugate.
Figure 21: PNA clamp (red) binding to target DNA containing a mixture of sequences (A) PNA binds with higher a...
Figure 22: Rolling circle amplification using PNA openers (red) to invade a dsDNA target forming a P-loop. A p...
Figure 23: Molecular beacons containing generic fluorophores (Fl) and quenchers (Q) recognizing a complementar...
Figure 24: (A) Light-up fluorophores such as thiazole orange display fluorescence enhancement upon binding to ...
Figure 25: Templated fluorogenic detection of oligonucleotides using two PNAs. (A) Templated FRET depends on h...
Figure 26: Lateral flow devices use a streptavidin labeled strip on nitrocellulose paper to anchor a capture P...