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May 24, 2022

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A nano-drug precisely attacks chemotherapy-resistant cancer

A single nanoparticle works in two ways: it increases the effectiveness of chemotherapy and acts as a stimulant of the immune system.

Gianluca Ricciodi Gianluca Riccio
in Medicine
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POST FP 700X500 2022 04 20T173558.777
April 20 2022
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In a study published in Advanced Materials magazine, Tel Aviv University (TAU) scientists have demonstrated the efficacy of a cancer therapy that can overcome both chemotherapy and resistance to immunotherapy.

At the head of the research (joint with South Korean colleagues) the Prof. Dan Peer, vice president of TAU and head of the precision nanomedicine laboratory.

cancer chemotherapy drug
Illustration of the anticancer nanopharmaceutical at work. (credits: TEL AVIV UNIVERSITY)

Get over chemotherapy

Chemo-immunotherapy, a combination of chemotherapy and immunotherapy, could become the most advanced standard of care for various types of cancer. “This is the first time that a single drug derived from a nanoparticle with RNA has been used in humans,” explains Prof. Peer. "It's just the beginning of this research, but it holds significant promise in the fight against cancer."

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The two types of therapy work together; there chemotherapy kills cancer cells while theimmunotherapy it stimulates the patient's immune system to attack the cancer on its own.

A difficult challenge

Unfortunately, many patients respond poorly to this dual treatment because its goals are not specific enough.

Cancers resistant to chemotherapy are a serious problem. The researchers targeted an enzyme called HO1, which is responsible for resistance to therapy. Identifying the "killer", however, is not the same as killing him. Current strategies for silencing HO1, in particular, are too strong for patients' bodies. Dr. Peer compares them to a fighter jet used to hit an ant.

dan peer chemotherapy
Professor Dan Peer of Tel Aviv University (credit: TEL AVIV UNIVERSITY)

The TAU team was the first to demonstrate that a drug delivery system based on lipid nanoparticles (the same used for RNA vaccines "deployed" against Covid) can target extremely particular cells: cancer cells for chemotherapy and immune cells for immunotherapy.

From this new research may come the results we hope against the cancer, even the most resistant one.

tags: cancerRNA
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