Takehiro Yamamoto, Tetsu Hayashida, Yohei Masugi, Kiyotaka Oshikawa, Noriyo Hayakawa, Mai Itoh, Chiyoko Nishime, Masami Suzuki, Aiko Nagayama, Yuko Kawai, Takako Hishiki, Tomomi Matsuura, Yoshiko Naito, Akiko Kubo, Arisa Yamamoto, Yujiro Yoshioka, Tomokazu Kurahori, Misa Nagasaka, Minako Takizawa, Naoharu Takano, Koji Kawakami, Michiie Sakamoto, Masatoshi Wakui, Takushi Yamamoto, Yuko Kitagawa, Yasuaki Kabe, Kenichi Horisawa, Atsushi Suzuki, Masaki Matsumoto, Makoto Suematsu
UNLABELLED: Triple-negative breast cancer (TNBC) chemoresistance hampers the ability to effectively treat patients. Identification of mechanisms driving chemoresistance can lead to strategies to improve treatment. Here, we revealed that protein arginine methyltransferase-1 (PRMT1) simultaneously methylates D-3-phosphoglycerate dehydrogenase (PHGDH), a critical enzyme in serine synthesis, and the glycolytic enzymes PFKFB3 and PKM2 in TNBC cells. 13C metabolic flux analyses showed that PRMT1-dependent methylation of these three enzymes diverts glucose toward intermediates in the serine-synthesizing and serine/glycine cleavage pathways, thereby accelerating the production of methyl donors in TNBC cells...
April 1, 2024: Cancer Research