Synthesis of Novel, Multivalent Glycodendrimers as Ligands for HIV-1 gp120

Richard D. Kensinger, Brian C. Yowler, Alan J. Benesi, Cara-Lynne Schengrund

Research output: Contribution to journalArticle

63 Citations (Scopus)

Abstract

Multivalent neoglycoconjugates are valuable tools for studying carbohydrate-protein interactions. To study the interaction of HIV-1 gp120 with its reported alternate glycolipid receptors, galactosyl ceramide (GalCer) and sulfatide, galactose- and sulfated galactose-derivatized dendrimers were synthesized, analyzed as ligands for rgp120 by surface plasmon resonance, and tested for their ability to inhibit HIV-1 infection of CXCR4- and CCR5-expressing indicator cells. Four different series of glycodendrimers were made by amine coupling spacer-arm derivatized galactose residues, either sulfated or nonsulfated, to poly(propylenimine) dendrimers, generations 1-5. One series of glycodendrimers was prepared from the ceramide saccharide derivative of purified natural GalCer, and another was from chemically synthesized 3-(β-D-galactopyranosylthio)propionic acid. Synthesis of 3-sulfogalactopyranosyl-derivatized dendrimers was accomplished using the novel compound, 3-(β-D-3-sulfogalactopyranosylthio)propionic acid. The fourth series was made by random sulfation of the 3-(β -D-galactopyranosylthio)propionic acid functionalized dendrimers. Structures of the carbohydrate moieties were confirmed by NMR, and the average molecular weights and polydispersities of the different glycodendrimers were determined using MALDI-TOF MS. Surface plasmon resonance studies found that rgp120 IIIB bound to the derivatized dendrimers tested with nanomolar affinity, and to dextran sulfate with picomolar affinity. In vitro studies of the effectiveness of these compounds at inhibiting infection of U373-MAGI-CCR5 cells by HIV-1 Ba-L indicated that the sulfated glycodendrimers were better inhibitors than the nonsulfated glycodendrimers, but not as effective as dextran sulfate.

Original languageEnglish (US)
Pages (from-to)349-358
Number of pages10
JournalBioconjugate Chemistry
Volume15
Issue number2
DOIs
StatePublished - Mar 1 2004

Fingerprint

Dendrimers
Ceramides
HIV-1
Propionic acid
Ligands
Galactose
Galactosylceramides
Dextran Sulfate
Dextran
Surface Plasmon Resonance
Surface plasmon resonance
Carbohydrates
Sulfoglycosphingolipids
Matrix-Assisted Laser Desorption-Ionization Mass Spectrometry
Polydispersity
HIV Infections
Amines
Molecular Weight
Molecular weight
Nuclear magnetic resonance

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Bioengineering
  • Biomedical Engineering
  • Pharmacology
  • Pharmaceutical Science
  • Organic Chemistry

Cite this

Kensinger, R. D., Yowler, B. C., Benesi, A. J., & Schengrund, C-L. (2004). Synthesis of Novel, Multivalent Glycodendrimers as Ligands for HIV-1 gp120. Bioconjugate Chemistry, 15(2), 349-358. https://doi.org/10.1021/bc034156a
Kensinger, Richard D. ; Yowler, Brian C. ; Benesi, Alan J. ; Schengrund, Cara-Lynne. / Synthesis of Novel, Multivalent Glycodendrimers as Ligands for HIV-1 gp120. In: Bioconjugate Chemistry. 2004 ; Vol. 15, No. 2. pp. 349-358.
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Kensinger, RD, Yowler, BC, Benesi, AJ & Schengrund, C-L 2004, 'Synthesis of Novel, Multivalent Glycodendrimers as Ligands for HIV-1 gp120', Bioconjugate Chemistry, vol. 15, no. 2, pp. 349-358. https://doi.org/10.1021/bc034156a

Synthesis of Novel, Multivalent Glycodendrimers as Ligands for HIV-1 gp120. / Kensinger, Richard D.; Yowler, Brian C.; Benesi, Alan J.; Schengrund, Cara-Lynne.

In: Bioconjugate Chemistry, Vol. 15, No. 2, 01.03.2004, p. 349-358.

Research output: Contribution to journalArticle

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