Drabik A, Ner-Kluza J, Hartman K, Mayer G, Silberring J. Changes in Protein Glycosylation as a Result of Aptamer Interactions with Cancer Cells.
Proteomics Clin Appl 2019;
14:e1800186. [PMID:
31550741 DOI:
10.1002/prca.201800186]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 03/04/2019] [Indexed: 12/21/2022]
Abstract
PURPOSE
Based on the recent aptamer-related breast cancer studies, which indicate the therapeutic role of specific oligonucleotide sequences, experiments have been designed in an attempt to unravel the molecular targets of this mechanism. This article describes the study on glycoproteome changes in breast cancer cells as a result of their interactions with aptamers.
EXPERIMENTAL DESIGN
Aberrations in protein glycosylation play an important role in tumorigenesis and influence cancer progression, metastasis, immunoresponse, and chemoresistance, therefore this study is focused on the identification of the alterations in glycan expression on the surface of proteins as a potential and innovative tool for biomedical applications of aptamers in cancer treatment.
RESULTS
Two proteins, kinesin-like protein (KI13B) and proliferating cell nuclear antigen (PCNA), have been identified that carry N-glycan epitopes after conjugation with aptamer sequences.
CONCLUSIONS AND CLINICAL RELEVANCE
Multiple features of aptamers as an alternative to protein antibodies are utilized for various biomedical applications ranging from biomarker discovery, bioimaging, targeted therapy, drug delivery, and drug pharmacokinetics and biodistribution. Frequently, aptamers bind to their target molecules and modulate their function. Such therapeutic aptamers can modify the biological pathways for treatment of many types of diseases, such as cancer.
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