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Updated: May 26, 2026

Electrochemotherapy of Tumours

Electrochemotherapy of Tumours

Published on: December 15, 2008

Electrostatic charge conversion processes in engineered tumor-identifying polypeptides for targeted chemotherapy.

Nam Muk Oh¹, Dong Sup Kwag, Kyung Taek Oh

¹Division of Biotechnology, The Catholic University of Korea, 43-1 Yeokgok 2-dong, Wonmi-gu, Bucheon, Gyeonggi-do 420-743, Republic of Korea.

|December 14, 2011

Summary

Researchers developed novel tumor-identifying polypeptides for ultra-sensitive cancer detection. These polypeptides utilize an electrostatic charge conversion process in acidic tumor environments, significantly enhancing drug and particle delivery for improved tumor inhibition in vivo.

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Area of Science:

Biochemistry
Oncology
Nanotechnology

Background:

Accurate in vivo tumor identification remains a critical challenge in cancer chemotherapy.
Conventional tumor-homing peptides often rely on specific receptor interactions, limiting their broad applicability.

Purpose of the Study:

To introduce a new class of tumor-identifying polypeptides that leverage electrostatic charge conversion for enhanced tumor homing.
To evaluate the efficacy of these novel polypeptides in delivering therapeutic agents to tumors and inhibiting their growth.

Main Methods:

Synthesized novel polypeptides designed to undergo electrostatic charge conversion in acidic tumor microenvironments.
Chemically coupled these polypeptides to therapeutic objects (drugs or particles).
Conducted in vivo studies in nude mice to assess tumor uptake and antitumor efficacy.

Main Results:

Demonstrated that the novel polypeptides effectively home in on in vivo tumors via charge conversion, distinct from receptor-mediated targeting.
Showcased a significant increase in the tumor uptake of polypeptide-tagged therapeutic objects.
Observed significantly enhanced tumor inhibition compared to conventional tumor-homing peptide systems.

Conclusions:

The newly developed tumor-identifying polypeptides offer a promising strategy for ultra-sensitive in vivo tumor detection.
The electrostatic charge conversion mechanism provides a novel and effective approach for targeted drug and particle delivery in cancer therapy.
This polypeptide system exhibits superior performance in tumor uptake and inhibition compared to existing methods.