Back

Deprivation of arginine and lysine interferes with growth of patient-derived tumor xenografts

Wolkersdorfer, A.; Bergmann, B.; Adelmann, J.; Ebbinghaus, M.; Guenther, E.; Gutmann, M.; Hahn, L.; Hurwitz, R.; Luehmann, T.; Schueler, J.; Schmidt, L.; Teifel, M.; Meinel, L.; Rudel, T.

2023-01-19 cancer biology
10.1101/2023.01.17.524398 bioRxiv
Show abstract

In recent years, a novel treatment method for cancer emerged, which is based on the starvation of tumors of amino acids like arginine. The deprivation of arginine in serum is based on enzymatic degradation and can be realized by arginine deaminases like the L-amino acid oxidase found in the ink toxin of the sea hare Aplysia punctata. Previously isolated from the ink, the L-amino acids oxidase was described to oxidate the essential amino acid L-lysine and L-arginine to their corresponding deaminated alpha-keto acids. Here, we present the recombinant production and functionalization of amino acid oxidase Aplysia Punctata ink toxin (APIT). PEGylated APIT (APIT-PEG) increased the blood circulation time. APIT-PEG treatment of patient-derived xenografted mice shows a significant dose dependent reduction of tumor growth over time mediated by amino acid starvation of the tumor. Treatment of mice with APIT-PEG which lead to deprivation of arginine was well tolerated.

Matching journals

The top 17 journals account for 50% of the predicted probability mass.

50% of probability mass above

"Similar papers" are the closest papers from that journal in the model's embedding space. They show what the match is built on, but the ranking comes mostly from a classifier over the whole training set, not from these examples alone.