Methods of modifying methylcytosine or derivative thereof using a nucleophilic molecule, and methods of using the same to detect the methylcytosine or derivative thereof in a polynucleotide
OwnerElena Cressina, Carole Anastasi +1inventors
InventorsElena Cressina, Carole Anastasi, Mykhailo Vybornyi
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Abstract
Disclosed herein are methods of modifying 5-methylcytosine (5-mC), 5-hydroxymethylcytosine (5-hmC), or 5-formlcytosine (5-fC) in a polynucleotide. The method may include oxidizing the 5-mC, 5-hmC, or 5-fC to 5-carboxylcytosine (5-caC); activating the 5-carboxyl group of the 5-caC; and reacting the activated 5-carboxyl group with a nucleophilic molecule to form a product. In some examples, the product may be used to detect the 5-mC, 5-hmC, or 5-fC in the polynucleotide.
Claims30
A method of modifying 5-methylcytosine (5-mC), 5-hydroxymethylcytosine (5-hmC), or 5-formlcytosine (5-fC) in a polynucleotide, the method comprising:
- oxidizing the 5-mC, 5-hmC, or 5-fC to 5-carboxylcytosine (5-caC);
- activating the 5-carboxyl group of the 5-caC;
- and
- reacting the activated 5-carboxyl group with a nucleophilic molecule to form a product.
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An isolated polynucleotide from an extracellular fluid sample, the polynucleotide comprising a product of a reaction between 5-carboxylcytosine (5-caC) and a nucleophilic molecule comprising a methylene group and first and second electron-withdrawing groups.
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Dependencies are inferred from the claim text.