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Targeted Cancer Therapies02:57

Targeted Cancer Therapies

The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against specific...

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An In Vitro Approach to Photodynamic Therapy
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Push-Pull OPEs in Blue-Light Anticancer Photodynamic Therapy.

Ana Lameiro1, Chiara M A Gangemi2, Aurora Mancuso2

  • 1Departamento de Biología, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain.

Molecules (Basel, Switzerland)
|June 13, 2025
PubMed
Summary
This summary is machine-generated.

Two novel push-pull glycosyl oligophenylene ethynylenes (OPEs) were synthesized for photodynamic therapy (PDT). OPE-NOF demonstrated significant charge-transfer properties and effectively killed HeLa cancer cells using blue light irradiation.

Keywords:
blue-light photodynamic therapyinternal charge transferoligophenylene ethynylenepush-pull chromophores

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Area of Science:

  • Organic Chemistry
  • Photochemistry
  • Biomedical Engineering

Background:

  • Photodynamic therapy (PDT) utilizes light, oxygen, and photosensitizers (PS) for cancer cell eradication.
  • Push-pull chromophores exhibit internal charge transfer (ICT), influencing photophysical properties relevant to reactive oxygen species (ROS) generation.

Purpose of the Study:

  • To synthesize and evaluate novel glycosyl-terminated push-pull oligophenylene ethynylenes (OPEs) for PDT applications.
  • To investigate the impact of donor group positioning on the photophysical properties and PDT efficacy of OPEs.

Main Methods:

  • Synthesis of two new push-pull glycosyl OPEs, OPE-NOF and OPE-ONF, featuring N,N-dimethylamino/dimethoxyaryl (donor) and tetrafluoroaryl (acceptor) moieties.
  • Characterization of synthesized compounds and intermediates using spectroscopic techniques (UV-Vis absorption and emission).
  • Evaluation of PDT efficacy on HeLa cancer cells using non-harmful blue light irradiation.

Main Results:

  • Efficient synthesis of OPE-NOF and OPE-ONF with characterized photophysical properties.
  • OPE-NOF exhibited strong internal charge transfer (ICT) characteristics.
  • OPE-NOF demonstrated significant photodynamic therapy (PDT) effect on HeLa cancer cells, inducing substantial cell death.

Conclusions:

  • The synthesized glycosyl OPEs show promise as photosensitizers for PDT.
  • OPE-NOF's structure facilitates efficient charge transfer and potent anticancer activity under blue light.
  • Further development of OPE-based compounds could lead to improved biocompatible PDT agents.