1. Academic Validation
  2. Tumor cell-derived N-acetyl-aspartyl-glutamate reshapes the tumor microenvironment to facilitate breast cancer metastasis

Tumor cell-derived N-acetyl-aspartyl-glutamate reshapes the tumor microenvironment to facilitate breast cancer metastasis

  • Sci Bull (Beijing). 2024 Dec 27:S2095-9273(24)00949-6. doi: 10.1016/j.scib.2024.12.039.
Jie Xia 1 Lixing Zhang 2 Wucheng Zhu 3 Juchuanli Tu 3 Xilei Peng 3 Qiaodan Deng 3 Siqin Li 3 Xueyan He 3 Haonan Dong 3 Cuicui Liu 4 Xian Chen 3 Jiahui Xu 3 Wei Ma 3 Yi Xiao 5 Wen Liu 6 Guohong Hu 7 Yi-Zhou Jiang 5 Ceshi Chen 8 Xiu-Wu Bian 9 Zhi-Ming Shao 5 Suling Liu 10
Affiliations

Affiliations

  • 1 Fudan University Shanghai Cancer Center & Institutes of Biomedical Sciences; State Key Laboratory of Genetic Engineering; Cancer Institutes; Department of Oncology; Key Laboratory of Breast Cancer in Shanghai; The Shanghai Key Laboratory of Medical Epigenetics; Shanghai Key Laboratory of Radiation Oncology; The International Co-laboratory of Medical Epigenetics and Metabolism, Ministry of Science and Technology; Shanghai Medical College; Fudan University, Shanghai 200032, China; Jinfeng Laboratory, Chongqing 401329, China; Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing 211166, China.
  • 2 Fudan University Shanghai Cancer Center & Institutes of Biomedical Sciences; State Key Laboratory of Genetic Engineering; Cancer Institutes; Department of Oncology; Key Laboratory of Breast Cancer in Shanghai; The Shanghai Key Laboratory of Medical Epigenetics; Shanghai Key Laboratory of Radiation Oncology; The International Co-laboratory of Medical Epigenetics and Metabolism, Ministry of Science and Technology; Shanghai Medical College; Fudan University, Shanghai 200032, China; Jinfeng Laboratory, Chongqing 401329, China; Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing 211166, China. Electronic address: zhang_lx@fudan.edu.cn.
  • 3 Fudan University Shanghai Cancer Center & Institutes of Biomedical Sciences; State Key Laboratory of Genetic Engineering; Cancer Institutes; Department of Oncology; Key Laboratory of Breast Cancer in Shanghai; The Shanghai Key Laboratory of Medical Epigenetics; Shanghai Key Laboratory of Radiation Oncology; The International Co-laboratory of Medical Epigenetics and Metabolism, Ministry of Science and Technology; Shanghai Medical College; Fudan University, Shanghai 200032, China.
  • 4 Key Laboratory of Breast Cancer in Shanghai, Department of Breast Surgery, Fudan University Shanghai Cancer Center and Cancer Institute, Shanghai Medical College, Fudan University, Shanghai 200032, China.
  • 5 Key Laboratory of Breast Cancer in Shanghai, Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Precision Cancer Medical Center, Fudan University Shanghai Cancer Center, Shanghai 201315, China.
  • 6 School of Pharmaceutical Sciences, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen 361102, China.
  • 7 Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China.
  • 8 Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences and Yunnan Province, Kunming Institute of Zoology, Kunming 650201, China; Academy of Biomedical Engineering & The Third Affiliated Hospital, Kunming Medical University, Kunming 650500, China.
  • 9 Jinfeng Laboratory, Chongqing 401329, China; Institute of Pathology and Southwest Cancer Centre, Southwest Hospital, The Third Military Medical University, Chongqing 400038, China.
  • 10 Fudan University Shanghai Cancer Center & Institutes of Biomedical Sciences; State Key Laboratory of Genetic Engineering; Cancer Institutes; Department of Oncology; Key Laboratory of Breast Cancer in Shanghai; The Shanghai Key Laboratory of Medical Epigenetics; Shanghai Key Laboratory of Radiation Oncology; The International Co-laboratory of Medical Epigenetics and Metabolism, Ministry of Science and Technology; Shanghai Medical College; Fudan University, Shanghai 200032, China; Jinfeng Laboratory, Chongqing 401329, China; Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing 211166, China. Electronic address: suling@fudan.edu.cn.
Abstract

Neurotransmitters are increasingly recognized to play important roles in limiting anti-tumor immunity. N-acetyl-aspartyl-glutamate (NAAG) has been extensively studied in neurological disorders; however, its potential role in restricting anti-tumor immunity has not been investigated. Here, we demonstrated that NAAG or its synthetase RimK-like family member B (RIMKLB) significantly disrupted anti-tumor immunity by rewiring the myeloid progenitor differentiation of polymorphonuclear myeloid-derived suppressor cells (PMN-MDSCs), which in turn promoted breast Cancer growth and metastasis. Mechanistically, NAAG sustained the tumor immunosuppressive microenvironment by activating an NR2B-containing NMDA Receptor (NR2B-NMDAR)-dependent p38-NOTCH1 axis, and subsequently stimulating tumor cell migration and invasion, as well as inducing PMN-MDSC differentiation and expansion. In mouse models, RIMKLB ablation or NMDAR inhibition enhanced the efficacy of anti-PD-1 therapy and suppressed tumor progression. An analysis of clinical samples revealed that high levels of NAAG and NR2B-NMDAR predicted a poor prognosis in TNBC patients. Collectively, our findings have uncovered a signaling role for tumor-derived NAAG beyond its classic function as a neurotransmitter that can be targeted pharmacologically to enhance immunotherapy against breast Cancer.

Keywords

Breast cancer metastasis; NAAG; NMDAR; PMN-MDSC; RIMKLB.

Figures
Products