---
title: Light Made a Cancer Drug Up to 96 Times More Potent in the Lab
description: A study finds light can make the cancer drug CX-5461 up to 96 times more potent and, in mice, trigger a vaccine-like immune response.
author: Darie Nani (Editor-in-Chief)
date: 2026-08-12T12:00:00.000Z
updated: 2026-08-12T13:25:45.764Z
canonical: https://richhealthmagazine.com/article/light-made-a-cancer-drug-up-to-96-times-more-potent-in-the-lab
image: https://cdn.nanimediahouse.com/pexels-scientists-working-with-a-microscope-in-a-high-tech-laborato-8442107.jpg
categories: Longevity & Science
content_type: News
region: Global
publication: Rich Health Magazine
access: members
schema_type: Article
---

In lab dishes, shining a specific wavelength of light on an investigational cancer drug made it dramatically better at killing tumor cells, and in mice, that same light trigger also set off an immune response that behaved like a vaccine against the cancer.

The finding, published in the journal Nucleic Acids Research, centers on CX-5461, also known as Pidnarulex, a drug already in clinical trials for other cancers. It is being developed by Senhwa Biosciences, a Taiwan-based oncology biotech, and carries an FDA Fast-Track designation. For years, one property of CX-5461 was treated mainly as a nuisance to manage during trials: it reacts to light. The new study, led by an international team from Wroclaw University of Science and Technology in Poland, the Slovak Academy of Sciences, ENS de Lyon in France, and Senhwa, asked whether that reactivity could be used on purpose, as a switch to activate the drug where it is wanted.

## Researchers Turned a Known Side Effect Into a Targeting Tool

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