Reference markers for biological samples
View Patent ↗DNA oligomers comprising sequences that are absent from the genome of one or more organisms of interest are used as reference markers (RMs). The RMs are added to biological samples to “tag” and subsequently identify the samples as authentic and to distinguish tagged samples from samples obtained without said markers, for example, in forensic, medical, legal and other applications.
1. A method of authenticating or tracking a biological sample of a human or other species, comprising the steps of:
obtaining one or more reference markers, each of said reference markers including at least one identified prime or nullomer of said human or other species which is an isolated and purified artificial oligonucleotide,
wherein said one or more reference markers include at least nucleic acid oligomers of SEQ ID Nos. 101, 113, 132, 144, 193, 235, and 281;
combining said biological sample with said one or more reference markers; and then
determining if a test sample includes said one more reference markers, wherein if said test sample includes said one or more reference markers then said test sample is authenticated to be said biological sample, and if said test sample does not include said one or more reference markers then said test sample is determined to not be said biological sample.
2. The method of claim 1 wherein said biological sample is of a human.
3. The method of claim 1 wherein said biological sample is a forensic sample.
4. The method of claim 1 wherein said determining step includes amplifying said one or more reference markers.
5. The method of claim 4 wherein said amplifying is performed as part of a polymerase chain reaction.
6. The method of claim 1 wherein said one or more reference markers is associated with a detectable label.
7. The method of claim 1 wherein said detectable label is a fluorescent tag.
8. A method of determining the validity of a biological sample of a human or other species, comprising
determining if a test sample includes one or more reference markers, wherein said one or more reference markers include at least nucleic acid oligomers of SEQ ID Nos. 101, 113, 132, 144, 193, 235, and 281, each of said reference markers including at least one identified prime or nullomer of said human or other species which is an isolated and purified artificial oligonucleotide, wherein if said test sample includes said one or more reference markers then said test sample is determined to be not a validly obtained biological sample, and if said test sample does not include said one or more reference markers then said test sample is determined to be a potentially validly obtained biological sample.