Amino group binding peptide aptamers with double disulphide-bridged loops selected by in vitro selection using cDNA display

2014 ◽  
Vol 50 (42) ◽  
pp. 5608-5610 ◽  
Author(s):  
Yuki Mochizuki ◽  
Koichi Nishigaki ◽  
Naoto Nemoto

Double disulphide-bridged loops of peptide aptamer are indispensable for the amino group recognition.

2015 ◽  
Vol 119 (2) ◽  
pp. 137-139 ◽  
Author(s):  
Seiichi Tada ◽  
Qingmin Zang ◽  
Wei Wang ◽  
Masuki Kawamoto ◽  
Mingzhe Liu ◽  
...  

2011 ◽  
Vol 2011 ◽  
pp. 1-10 ◽  
Author(s):  
Madhu Biyani ◽  
Masae Futakami ◽  
Koichiro Kitamura ◽  
Tomoyo Kawakubo ◽  
Miho Suzuki ◽  
...  

The aspartic protease cathepsin E has been shown to induce apoptosis in cancer cells under physiological conditions. Therefore, cathepsin E-activity-enhancing peptides functioning in the physiological pH range are valuable potential cancer therapeutic candidates. Here, we have used a general in vitro selection method (evolutionary rapid panning analysis system (eRAPANSY)), based on inverse substrate-function link (SF-link) selection to successfully identify cathepsin E-activity-enhancing peptide aptamers at neutral pH. A successive enrichment of peptide activators was attained in the course of selection. One such peptide activated cathepsin E up to 260%, had a high affinity (KD; ∼300 nM), and had physiological activity as demonstrated by its apoptosis-inducing reaction in cancerous cells. This method is expected to be widely applicable for the identification of protease-activity-enhancing peptide aptamers.


2020 ◽  
Author(s):  
Tianjiong Yao ◽  
Jack Przybyla ◽  
Peter Yeh ◽  
Austin Woodard ◽  
Hannah Nilsson ◽  
...  

DNAzymes were previously identified by in vitro selection for a variety of chemical reactions, including several biologically relevant peptide modifications. However, finding DNAzymes for peptide lysine acylation is a substantial challenge. By using suitably reactive aryl ester acyl donors as the electrophiles, here we used in vitro selection to identify DNAzymes that acylate amines, including lysine side chains of DNA-anchored peptides. Some of the DNAzymes can transfer a small glutaryl group to an amino group. These results expand the scope of DNAzyme catalysis and suggest the future broader applicability of DNAzymes for sequence-selective lysine acylation of peptide and protein substrates.


2014 ◽  
Vol 117 (4) ◽  
pp. 501-503 ◽  
Author(s):  
Zha Li ◽  
Takanori Uzawa ◽  
Haichao Zhao ◽  
Shyh-Chyang Luo ◽  
Hsiao-hua Yu ◽  
...  

2012 ◽  
Vol 48 (97) ◽  
pp. 11871 ◽  
Author(s):  
Mingzhe Liu ◽  
Seiichi Tada ◽  
Mika Ito ◽  
Hiroshi Abe ◽  
Yoshihiro Ito

2013 ◽  
Vol 53 (supplement1-2) ◽  
pp. S210
Author(s):  
Yasodha Manandhar ◽  
Takanori Uzawa ◽  
Toshiro Aigaki ◽  
Yoshihiro Ito

2014 ◽  
Vol 37 (3) ◽  
pp. 619-625 ◽  
Author(s):  
Yasodha Manandhar ◽  
K. C. Tara Bahadur ◽  
Wei Wang ◽  
Takanori Uzawa ◽  
Toshiro Aigaki ◽  
...  

2012 ◽  
Vol 35 (1) ◽  
pp. 39-45 ◽  
Author(s):  
Zha Li ◽  
Takanori Uzawa ◽  
Takashi Tanaka ◽  
Akira Hida ◽  
Koji Ishibashi ◽  
...  

ACS Omega ◽  
2016 ◽  
Vol 1 (1) ◽  
pp. 52-57 ◽  
Author(s):  
Shigefumi Kumachi ◽  
Yuzuru Husimi ◽  
Naoto Nemoto

2020 ◽  
Author(s):  
Tianjiong Yao ◽  
Jack Przybyla ◽  
Peter Yeh ◽  
Austin Woodard ◽  
Hannah Nilsson ◽  
...  

DNAzymes were previously identified by in vitro selection for a variety of chemical reactions, including several biologically relevant peptide modifications. However, finding DNAzymes for peptide lysine acylation is a substantial challenge. By using suitably reactive aryl ester acyl donors as the electrophiles, here we used in vitro selection to identify DNAzymes that acylate amines, including lysine side chains of DNA-anchored peptides. Some of the DNAzymes can transfer a small glutaryl group to an amino group. These results expand the scope of DNAzyme catalysis and suggest the future broader applicability of DNAzymes for sequence-selective lysine acylation of peptide and protein substrates.


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