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Antibody-Drug Conjugates for the Treatment of Neoplastic Disorders

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Pathology, Diagnostics, and Therapeutics".

Deadline for manuscript submissions: closed (28 February 2021) | Viewed by 2934

Special Issue Editor


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Guest Editor
Hematology Unit, 2nd Department of Internal Medicine, “Attikon” University General Hospital, Medical School, National and Kapodistrian University of Athens, 12462 Athens, Greece
Interests: immunotherapy; acute leukemias; stem cell transplantation; lymphomas

Special Issue Information

Dear Colleagues,

Antibody–drug conjugates (ADG) are monoclonal antibodies (Mab) conjugated to cytotoxic agents. The antibody is specific for an antigenic target expressed on the surface of tumor cells. A specific linker is used for conjugation of a cytotoxic agent to the antibody. Following binding of thr antibody to the target, the antibody/antigen complex is internalized, and the cytotoxic agent is released in the cytoplasm, enters the nucleus, and induces DNA damage, finally leading to tumor cell apoptosis. ADGs serve as vehicles for the specific delivery of cell poisons to tumor, while normal cells are spared, thus avoiding significant off-target side-effects. Substantial advances in bioengineering technology have resulted in regulatory approval of several ADGs, such as Trastuzumab–emtansine, Brentuximab–vedotin, Gemtuzumab–ozogamycin, and Inotuzumab ozogamycin for the treatment of breast cancer, Hodgkin’s lymphoma, acute myeloid leukemia, and acute lymphoblastic leukemia, respectively, while a few other promising ADGs are now in late-phase clinical testing. The scope of this issue is the review of the mechanism of action, the clinical efficacy, as well as the ongoing efforts focused on identifying better targets, more effective cytotoxic poisons, and more stable antibody–drub binding. Improved understanding of the mechanistic basis of ADGs will enable the design of more effective and safe administration of these antibodies either as monotherapy or in combination with other agents, including immunotherapy.

Dr. Panagiotis Tsirigotis
Guest Editor

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Keywords

  • Antibody-drug conjugates
  • Leukemia
  • Lymphoma
  • Breast cancer
  • Solid tumors

Published Papers (1 paper)

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Research

12 pages, 1975 KiB  
Article
Production of a Granulysin-Based, Tn-Targeted Cytolytic Immunotoxin Using Pulsed Electric Field Technology
by Patricia Guerrero-Ochoa, Diederich Aguilar-Machado, Raquel Ibáñez-Pérez, Javier Macías-León, Ramón Hurtado-Guerrero, Javier Raso and Alberto Anel
Int. J. Mol. Sci. 2020, 21(17), 6165; https://doi.org/10.3390/ijms21176165 - 26 Aug 2020
Cited by 5 | Viewed by 2351
Abstract
Granulysin is a protein present in the granules of human cytotoxic T lymphocytes (CTL) and natural killer (NK) cells, with cytolytic activity against microbes and tumors. Previous work demonstrated the therapeutic effect of the intratumoral injection of recombinant granulysin and of the systemic [...] Read more.
Granulysin is a protein present in the granules of human cytotoxic T lymphocytes (CTL) and natural killer (NK) cells, with cytolytic activity against microbes and tumors. Previous work demonstrated the therapeutic effect of the intratumoral injection of recombinant granulysin and of the systemic injection of an immunotoxin between granulysin and the anti-carcinoembryonic antigen single-chain Fv antibody fragment MFE23, which were produced in the yeast Pichia pastoris. In the present work, we developed a second immunotoxin combining granulysin and the anti-Tn antigen single-chain Fv antibody fragment SM3, that could have a broader application in tumor treatment than our previous immunotoxin. In addition, we optimized a method based on electroporation by pulsed electric field (PEF) to extract the remaining intracellular protein from yeast, augmenting the production and purificiation yield. The immunotoxin specifically recognized the Tn antigen on the cell surface. We also compared the thermal stability and the cytotoxic potential of the extracellular and intracellular immunotoxins on Tn-expressing human cell lines, showing that they were similar. Moreover, the bioactivity of both immunotoxins against several Tn+ cell lines was higher than that of granulysin alone. Full article
(This article belongs to the Special Issue Antibody-Drug Conjugates for the Treatment of Neoplastic Disorders)
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