Axolotl

 

Scientists just discovered that peptides in axolotl mucus kills breast cancer cells naturally, without harming healthy tissue.

And it also destroys drug-resistant MRSA bacteria

Published in the journal PLOS ONE, the study reveals that specific antimicrobial peptides (AMPs) extracted from the axolotl's protective slime successfully destroyed methicillin-resistant Staphylococcus aureus (MRSA). 

Even more remarkably, three of these peptides selectively triggered programmed cell death in breast cancer cells while completely sparing healthy breast tissue, offering an incredibly precise new pathway for targeted therapies.

By gently massaging captive-bred axolotls to collect their mucus, scientists identified and synthesized 22 potential peptide candidates, finding that their unique chemical structures allow them to puncture bacterial cell walls and disrupt oncogenes in cancer cells. This natural defense mechanism is significantly harder for pathogens to develop resistance against compared to traditional, overused antibiotics. While further testing is required before these peptides can be transformed into clinical treatments, the findings highlight the critical importance of conserving endangered species like the axolotl, whose unique biology could hold the key to solving some of humanity's most pressing medical crises.

source: Dastagir, N., Liebsch, C., Kutz, J., Wronski, S., Pich, A., Obed, D., & Strauss, S. (2025). Identification of antimicrobial peptides from the Ambystoma mexicanum displaying antibacterial and antitumor activity. PLOS ONE, 20(3), e0316257.