Flexible and Frozen Sugar-Modified Nucleic Acids - Modulation of Biological Activity Through Furanose Ring Dynamics in the Antisense Strand
Bibliographic record
Abstract
A comparison of carbohydrate modified nucleic acids has identified key structural characteristics in antisense oligonucleotides (AON) that are necessary for sufficient clinical utility, including increased duplex stability towards RNA complements and improved hydrolytic resistance towards general serum and cellular nucleases. As such, the exogenous addition of short, synthetic oligonucleotides can influence cellular RNA metabolism at any or all levels of replication, transcription or translation by tight and specific hybridization with a chosen target and subsequently stop further function at that site. Furthermore, appropriate modification of the sugar residue may prove to be a vital design element in future AONs that operate by promoting enzyme assisted catalytic destruction of the mRNA target. Unfortunately, many of the current AON designs have provided little insight on the particular structural role of the AON towards enzymatic discrimination of the resultant hybrid. The use of RNase H as a cellular vehicle to assist the inhibitory potency of an AON as well as possible ways of enhancing activity in pre-existing antisense candidates are presented. Of the emerging criteria in this aspect, a balance between flexibility and rigidity within the AON appears to be a critical mediator of the RNase H assisted antisense effect. Accordingly, this review describes the conformational features and selected biological attributes of some of the more prominent AON contenders with a focus on the conformational criteria by which ribonuclease H activity is recruited to a particular hybrid target.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".