Evidence map›Paper›PMID 25559441›Full record

ArticlemAbs2015

Rational design of viscosity reducing mutants of a monoclonal antibody: hydrophobic versus electrostatic inter-molecular interactions.

Pilarin Nichols, Li Li, Sandeep Kumar, Patrick M Buck, Satish K Singh, Sumit Goswami, Bryan Balthazor, Tami R Conley, David Sek, Martin J Allen

Abstract read
In one paragraph

Article in mAbs, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 64 papers.

0numbers the graph read from it
0cells of the map it votes in
64citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

64 citing papers in PubMed.

  1. Article
  2. Article
  3. Fab-Fc and Fab-Fab interactions of variable strength and valency contribute to the high concentration viscosity of IgGProceedings of the National Academy of Sciences of the United States of America · 2026
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4 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Pilarin Nicholsa Biotherapeutics Pharmaceutical Sciences Research and Development; Pfizer Inc. ; Andover , MA USA.
Li Li
Sandeep Kumar
Patrick M Buck
Satish K Singh
Sumit Goswami
Bryan Balthazor
Tami R Conley
David Sek
Martin J Allen

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

High viscosity of monoclonal antibody formulations at concentrations ≥100 mg/mL can impede their development as products suitable for subcutaneous delivery. The effects of hydrophobic and electrostatic intermolecular interactions on the solution behavior of MAB 1, which becomes unacceptably viscous at high concentrations, was studied by testing 5 single point mutants. The mutations were designed to reduce viscosity by disrupting either an aggregation prone region (APR), which also participates in 2 hydrophobic surface patches, or a negatively charged surface patch in the variable region. The disruption of an APR that lies at the interface of light and heavy chain variable domains, VH and VL, via L45K mutation destabilized MAB 1 and abolished antigen binding. However, mutation at the preceding residue (V44K), which also lies in the same APR, increased apparent solubility and reduced viscosity of MAB 1 without sacrificing antigen binding or thermal stability. Neutralizing the negatively charged surface patch (E59Y) also increased apparent solubility and reduced viscosity of MAB 1, but charge reversal at the same position (E59K/R) caused destabilization, decreased solubility and led to difficulties in sample manipulation that precluded their viscosity measurements at high concentrations. Both V44K and E59Y mutations showed similar increase in apparent solubility. However, the viscosity profile of E59Y was considerably better than that of the V44K, providing evidence that inter-molecular interactions in MAB 1 are electrostatically driven. In conclusion, neutralizing negatively charged surface patches may be more beneficial toward reducing viscosity of highly concentrated antibody solutions than charge reversal or aggregation prone motif disruption.

Indexed as

Amino Acid SubstitutionPoint MutationAntibodies, MonoclonalHumansHydrophobic and Hydrophilic InteractionsSolubilityStatic ElectricityViscosityAntibodies, Monoclonalaggregation prone regionsAPR, Aggregation Prone RegionASA, Accessible Surface AreaASAFv-HPH, hydrophilic accessible surface area of the Fv portionASAFv-HYD, hydrophobic accessible surface area of the Fv portionCE, Capillary ElectrophoresisCH2CH3, third constant domain in heavy chainCHO, Chinese Hamster OvarycIEF, capillary Isoelectric FocusingcP, centipoiseD0, diffusion coefficient at infinite dilutionDFv, dipole moment of FvDLS, Dynamic Light ScatteringELISA, Enzyme-Linked Immunosorbent AssayFab, fragment antigen bindingFc, fragment crystallizableFv, fragment variableHC, heavy chainhigh concentrationIgG, immunoglobulin GkD, protein-protein interaction parameterLC, light chainMAB 1 Control, MAB 1 expressed in CHO cellsmAb, monoclonal antibodyMD, molecular dynamicsmolecular modelingmonoclonal antibodiesnegatively charged patchesNTU, Nephelometric Turbidity UnitPagg-VH, aggregation propensity of VH domainPagg-VL, aggregation propensity of VL domainPEG, polyethylene glycolrational designRPM, revolutions per minutesecond constant domain in the heavy chainSE-HPLC, Size Exclusion High Performance Liquid ChromatographysolubilityTm, thermal transition temperatureVH, variable domain in the heavy chainviscosityVL, variable domain in the light chainZDHH, Debye-Huckel Henry ChargeZFv-app, apparent charge of the FvZFv, net charge of the FvΔGFv, change in Free energy of Fvη0, solvent viscosityηrel, relative viscosityη, solution viscosityξFv, zeta-potential of the Fv

Identifiers

PMID25559441
PMCPMC4622976

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.