The Exocytosis Regulator Synaptotagmin V Controls Phagocytosis in Macrophages
Bibliographic record
Abstract
Synaptotagmins (Syts) play a key role in the regulation of Ca(2+)-triggered exocytosis and membrane fusion events, two crucial events associated to the phagocytic process. In the present study, we investigated the role of Syt V, a regulator of focal exocytosis, in phagocytosis. In macrophages, Syt V is localized on recycling endosomes and on filopodia-like structures and is recruited to the nascent phagosomes independently of the phagocytic receptor engaged. Silencing of Syt V by RNA interference revealed a role for this protein for phagocytosis, particularly under conditions of high membrane demand. In contrast, silencing of Syt V had no effect on the recruitment of the lysosomal marker LAMP1 to phagosomes, indicating that phagosome maturation is not regulated by Syt V. Collectively, these results illustrate the importance of Syt V in the regulation of an important innate function of macrophages. Furthermore, our results are consistent with the concept that focal exocytosis of endocytic organelles is a key event in phagocytosis and suggest that Syt V regulates this process.
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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 | 0.000 |
| 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 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".