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Record W4246108211 · doi:10.32920/ryerson.14647710.v1

Activated Fc receptor supramolecular complex

2021· preprint· en· W4246108211 on OpenAlexaff
Veronika Petrenko

Bibliographic record

Venuenot available
Typepreprint
Languageen
FieldMedicine
TopicMonoclonal and Polyclonal Antibodies Research
Canadian institutionsToronto Metropolitan University
Fundersnot available
KeywordsPhagocytosisPhagosomeReceptorOpsoninCell biologyTransfectionImmune systemChemistryAntibodyMolecular biologyBiologyImmunologyBiochemistryGene

Abstract

fetched live from OpenAlex

Phagocytosis is a part of immune response. IgG opsonized particles of greater than 1 um are recognized by Fcy receptors on the surface of professional phagocytes such as macrophages and neutrphils. IgGs are part of the immune system and is a cognate ligand of the Fc receptor. Live Cell Affinity Receptor chromatography (LARC) was used to capture an activated Fcy receptor supramolecular complex from the surface of live human neutrophils, by allowing IgG opsonized microbeads to bind to the cell surface. The cells were burst in PBS, collected and digested along side with controls. Isolated FcyR complex was analysed by LC-MS/MS. Fc and control experiment lists of SEQUEST correlated proteins were screened for a total cumulative score of at least 2400 and a minimum of three different peptides. This served as the basis of protein involvement in the FcyR mediated phagocytosis, which were then searched with iHOP for their interaction partners. Gathered interactions were then exported and Cytoscape, Osprey and String algorithms were used to generate network of interacting proteins. PAKs2-4 and PAK6 were detected with LARC. PAK2 and PAK4 were predicted by algorithms to have a central role in particle uptake. From Western Blotting, endogenous PAKs2-4 and PAK6 were detected in murine macrophages. Immunofluorescent staining was then used to verify the presence of these proteins in the forming phagosome and showed localization of PAKs to the phagosome. The same effect was observed with transfection of GFP constructs of PAKs. Upon transfection with dominant negative PAKs reduction in phagocytosis was observed.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.001
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.009
Threshold uncertainty score0.029

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.001
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0010.001
Science and technology studies0.0000.000
Scholarly communication0.0010.001
Open science0.0010.001
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0090.003

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.

Opus teacher head0.077
GPT teacher head0.364
Teacher spread0.287 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designBench or experimental
Domainnot available
GenreEmpirical

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".

Quick stats

Citations0
Published2021
Admission routes1
Has abstractyes

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