Development and testing of retroviral vectors expressing multimeric hammerhead ribozymes targeted against all major clades of HIV-1
Why this work is in the frame
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Bibliographic record
Abstract
Rz1-9 is a multimeric hammerhead ribozyme targeted against nine highly conserved sites within the env coding region of human immunodeficiency virus type-1 (HIV-1) RNA. This ribozyme was shown to inhibit HIV-1 replication (1, 2). However, Rz1-9 target sites are only conserved within the clade B of HIV-1. In this study, we have designed another multimeric ribozyme, Rz10-14. This multimeric ribozyme is targeted against five sites that are highly conserved amongst all major clades of HIV-1. A third multimeric ribozyme, Rz1-14, was obtained by combining both Rz1-9 and Rz10-14. A mouse stem cell virus-based MGIN vector (3) was used to express these ribozymes in a human CD4+ T lymphoid cell line. Stable transductants expressed vector RNA containing ribozymes which were shown to be active. In HIV-1 challenge experiments, very little or no virus production could be detected in the pools of stable MT4 transductants expressing Rz1-14 for 60 days tested. Inhibition of virus replication was most prominent with Rz1-14, followed by Rz1-9, and then Rz10-14. Thus, the combined multimeric ribozyme, Rz1-14, is more effective than Rz1-9 or Rz10-14. As Rz1-14 is targeted against all major clades of HIV-1, it will be further pursued for use in HIV-1 gene therapy.
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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) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| 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 it