Polyphosphocholination of liposomic vehicles extends blood circulation, enhances cellular uptake, and lowers immunogenicity relative to PEGylation
Bibliographic record
Abstract
Intravenous liposomal drug delivery holds great promise for pharmaceutical efficacy, but faces challenges such as rapid clearance and immune system degradation. PEG-based liposome surface functionalization (PEGylation), currently the gold-standard and most widely-used approach to address these issues, is prone to reduced cellular uptake and accelerated bloodstream clearance (ABC) effect upon repeated administration due to immune activation. We demonstrate a novel liposome surface functionalization using poly(2-methacryloyloxyethyl phosphorylcholine) (pMPC) that significantly overcomes these limitations while maintaining comparable colloidal stability. Such polyphosphocholinated liposomes exhibit tunable cellular uptake, and prolonged blood circulation times, both modulated by polymer length, alongside reduced immunogenicity (lower IgM antibody elicitation) and a diminished ABC effect compared to PEG-liposomes. These polymer-length-dependent properties offer flexibility in optimizing drug delivery systems, positioning pMPCylated liposomes as a compelling alternative to PEGylated formulations with clear advantages for liposomal drug delivery therapeutics.
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How this classification was reachedexpand
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 | 0.000 |
| 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 teacher head, 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".