The <i>C. elegans pvf‐1</i> gene encodes a PDGF/VEGF‐like factor able to bind mammalian VEGF receptors and to induce angiogenesis
Bibliographic record
Abstract
ABSTRACT Members of the platelet‐derived growth factor/vascular endothelial growth factor (PDGF/ VEGF) family have been implicated in a variety of functions in vertebrates, especially angiogenesis. Here we identify and characterize a PDGF/VEGF‐like factor (named PVF‐1) from the nematode C. elegans . We show that PVF‐1 has biochemical properties similar to vertebrate PDGF/VEGF growth factors. More important, PVF‐1 binds to the human receptors VEGFR‐1 (Flt‐1) and VEGFR‐2 (KDR) and is able to induce angiogenesis in two model systems derived from vertebrates. Our results highlight the widespread evolutionary conservation of this important class of growth factors and raise the possibility that C. elegans can provide a simple experimental system in which to investigate how these factors function.—Tarsitano, M., De Falco, S., Colonna, V., McGhee, J. D., Persico, M. G. The C. elegans pvf‐1 gene encodes a PDGF/VEGF‐like factor able to bind mammalian VEGF receptors and to induce angiogenesis. FASEB J. 20, 227–233 (2006)
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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) | 0.002 | 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".