Repurposing 13-Cis-Retinoic Acid: A Potential Treatment for Aneurysms-Osteoarthritis Syndrome
Bibliographic record
Abstract
Approximately 7000 rare disorders exist, affecting 2 percent of Canadians and millions of people worldwide. Given that for many rare diseases only one allele is mutated, we hypothesize inducing expression of the remaining wild-type allele may have a therapeutic effect. SMAD3 heterozygosity results in Aneurysms-Osteoarthritis Syndrome (AOS) – an aortic aneurysm disorder also known as Loeys-Dietz Syndrome Type 3. We conducted a screen of FDA-approved compounds and found that 13-cis-retinoic acid (13-CRA) induces SMAD3 in normal human fibroblast cultures. Treatment with therapeutic concentrations of 13-CRA increased SMAD3 mRNA in normal human fibroblasts, patient fibroblasts, wild-type murine vascular smooth muscle cells and Smad3+/- murine vascular smooth muscle cells. Increases in SMAD3 protein were also observed in normal human fibroblasts, patient fibroblasts, and wild-type murine vascular smooth muscle cells. Immunofluorescent imaging revealed the primary site of protein induction to be nuclear. We report here the in vitro induction of SMAD3 mRNA and protein by therapeutic levels of 13-CRA and suggest further investigation of this modality for the treatment of AOS.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.004 | 0.001 |
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 source (direct Gemma or distilled Codex), 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".