Synthesis of LacNAcLe<sup>x</sup>‐ and DimLe<sup>x</sup>‐BSA Conjugates and Binding to Anti‐Polymeric Le<sup>x</sup> mAbs
Bibliographic record
Abstract
The chemical synthesis of tetra‐ and pentasaccharide fragments of the tumor‐associated carbohydrate antigen dimeric Lewis X (dimLex) lacking either both or only the non‐reducing end fucosyl residues is described following a 1 + 1 + 1 synthetic strategy. Use of a 6‐chlorohexyl aglycon gave access to hexyl glycoside soluble inhibitors as well as the 6‐aminohexyl glycoside pentasaccharide. The 6‐aminohexyl glycoside pentasaccharide and a dimLex analogue were conjugated to BSA via a squarate linker and the glycoconjugates were shown by MALDI MS to both display an average of 16 oligosaccharides per BSA molecule. These glycoconjugates were used in the attempt to identify the smallest dimLex fragment required to maintain binding to mAbs SH2 and IG5F6, which are known to bind polymeric Lex structures preferentially over the monomeric Lex antigen. Titration studies showed that the non‐reducing end fucosyl residue in dimLex is involved in the recognition of the antigen by both mAbs SH2 and IG5F6.
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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".