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Synthesis and characterization of a novel chemically designed (Globo)3-DTPA-KLH antigen.

Abstract
In recent years, many experiments have been conducted for the production and evaluation of anticancer glycoconjugated vaccines in developed countries and many achievements have been accomplished with Globo H derivatives. In the current experiment, a new chemically designed triplicate version of (Globo H)3-diethylenetriamine pentaacetic acid (DTPA)-KLH antigen was synthesized and characterized. Immunization with (Globo H)3-DTPA-KLH, a hexasaccharide that is a member of a family of antigenic carbohydrates that are highly expressed in various types of cancers conjugated with DTPA and KLH protein, induced a high level of antibody titer along with an elevated level of IL-4 in mice. Treatment of tumors with the collected sera from immunized mice decreased the tumor size in nude mice as well. None of the immunized mice illustrated any sign of tumor growth after injection of MCF-7 cells compared to the control animals. These findings, based on the newly presented structure of the Globo H antigen, lend exciting and promising evidence for clinical advancement in the development of a therapeutic vaccine in the future.
AuthorsMehdi Hajmohammadi, Seyed Davar Siadat, Masoud Ghorbani, Mehdi Shafiee Ardestani, Shahram Teimourian, Vahid Asgari, Reza Ahangari Cohan, Mostafa Hajmohammadi, Akram Hajmohammadi, Ramezan Behzadi, Saied Rajab Nezhad, Nabiollah Namvar Asl
JournalDrug design, development and therapy (Drug Des Devel Ther) Vol. 9 Pg. 217-39 ( 2015) ISSN: 1177-8881 [Electronic] New Zealand
PMID25565775 (Publication Type: Journal Article)
Chemical References
  • Adjuvants, Immunologic
  • Antigens, Tumor-Associated, Carbohydrate
  • Cancer Vaccines
  • Globo-H
  • Pentetic Acid
  • Hemocyanins
  • keyhole-limpet hemocyanin
Topics
  • Adjuvants, Immunologic
  • Animals
  • Antigens, Tumor-Associated, Carbohydrate (chemistry, immunology)
  • Cancer Vaccines (chemistry, immunology)
  • Drug Design
  • Female
  • Hemocyanins (chemistry, immunology)
  • Humans
  • MCF-7 Cells
  • Mammary Neoplasms, Experimental (immunology, therapy)
  • Mice
  • Mice, Nude
  • Molecular Structure
  • Pentetic Acid (chemistry, immunology)

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