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Weizmann Institute study: Viagra may slow cancer metastasis via cholesterol pathway

Israeli researchers find sildenafil blocks cancer cell spread and report 26% higher five-year survival in patients who used the drug before diagnosis.

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Summary, timeline and people extracted by Claude from 5 items across 2 sources · 3h ago. Quotes are verbatim.

A study led by the Weizmann Institute of Science in Israel, published in Cancer Research, shows that sildenafil (Viagra's active ingredient) may prevent cancer metastasis by disrupting cholesterol transport in cancer cells. Laboratory tests on cultured cancer cells and analysis of 40,000+ male cancer patient records spanning 20 years found that those prescribed sildenafil before diagnosis had 26% higher five-year survival rates, rising to 32% when combined with statins.

  • Sildenafil blocks PDE5 enzyme, causing cGMP to accumulate and disrupt cholesterol transport in cancer cells, preventing metastasis.
  • Analysis of 40,000+ male cancer patients found 26% higher five-year survival rates among those prescribed sildenafil before diagnosis; combined with statins, survival improved to 32%.
  • Findings suggest existing medications' effects on cancer biology extend beyond their intended therapeutic uses, opening new avenues for repurposing known drugs.
  • Study demonstrates how understanding patient metabolic state and medication history can inform cancer treatment strategies.

How it unfolded

  1. Report Global health media expands coverage

    Medical Dialogues and other international outlets continue reporting on the study's results and the potential therapeutic applications.

  2. Reaction Israeli media coverage begins

    Jerusalem Post, Times of Israel, and other outlets report on the Israeli study as a world-first finding on Viagra's potential anti-cancer properties.

  3. Report International science media coverage

    BioTechniques and Discover Magazine publish analysis of the study's findings and implications for cancer treatment.

  4. Report Study published in Cancer Research

    Weizmann Institute researchers publish findings showing sildenafil blocks cancer metastasis by preventing cholesterol accumulation in cancer cell membranes, essential for cells to spread.

  5. Report Nautilus article covers research

    Nautilus publishes detailed explanation of the study's mechanism: sildenafil blocks PDE5 enzyme, causing cGMP to accumulate and interfere with cholesterol transport in cancer cells.

    “We have uncovered a new biological pathway that links a well-known signaling molecule to cholesterol regulation within cells, and shown how this pathway can be harnessed to interfere with the ability of cancer cells to form metastases.”

    Ayelet Erez · Hacker News ↗

What people are saying verbatim

“We have uncovered a new biological pathway that links a well-known signaling molecule to cholesterol regulation within cells, and shown how this pathway can be harnessed to interfere with the ability of cancer cells to form metastases.”

Ayelet Erez, Study author, Weizmann Institute · Nautilus ↗ · Aug 7

“Beyond their therapeutic promise, our findings highlight that cancer biology is shaped not only by mutations in tumor cells but also by the patient's metabolic state and by medications they're already taking for other conditions.”

Ayelet Erez, Study author, Weizmann Institute · Nautilus ↗ · Aug 7

“Viagra was something of an accident. Developed by Pfizer, sildenafil was a promising drug to relieve chest pain and high blood pressure, but male test subjects noticed certain, uh, side effects.”

Nautilus, Science publication · Nautilus ↗ · Aug 7