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Du Z, Su J, Lin S, Chen T, Gao W, Wang M, Li Y, Wei D, Hu Z, Gao C, Li Q. Hydroxyphenylpyruvate Dioxygenase Is a Metabolic Immune Checkpoint for UTX-deficient Colorectal Cancer. Gastroenterology 2023; 164:1165-1179.e13. [PMID: 36813208 DOI: 10.1053/j.gastro.2023.02.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 02/01/2023] [Accepted: 02/11/2023] [Indexed: 02/24/2023]
Abstract
BACKGROUND & AIMS Aberrant epigenetic events mediated by histone methyltransferases and demethylases contribute to malignant progression of colorectal cancer (CRC). However, the role of the histone demethylase ubiquitously transcribed tetratricopeptide repeat on chromosome X (UTX) in CRC remains poorly understood. METHODS UTX conditional knockout mice and UTX-silenced MC38 cells were used to investigate UTX function in tumorigenesis and development of CRC. We performed time of flight mass cytometry to clarify the functional role of UTX in remodeling immune microenvironment of CRC. To investigate metabolic interaction between myeloid-derived suppressor cells (MDSCs) and CRC, we analyzed metabolomics data to identify metabolites secreted by UTX-deficient cancer cells and taken up by MDSCs. RESULTS We unraveled a tyrosine-mediated metabolic symbiosis between MDSC and UTX-deficient CRC. Loss of UTX in CRC resulted in methylation of phenylalanine hydroxylase, preventing its degradation and subsequently increasing tyrosine synthesis and secretion. Tyrosine taken up by MDSCs was metabolized to homogentisic acid by hydroxyphenylpyruvate dioxygenase. Homogentisic acid modified protein inhibitor of activated STAT3 via carbonylation of Cys 176, and relieved the inhibitory effect of protein inhibitor of activated STAT3 on signal transducer and activator of transcription 5 transcriptional activity. This in turn, promoted MDSC survival and accumulation, enabling CRC cells to acquire invasive and metastatic traits. CONCLUSIONS Collectively, these findings highlight hydroxyphenylpyruvate dioxygenase as a metabolic checkpoint to restrict immunosuppressive MDSCs and to counteract malignant progression of UTX-deficient CRC.
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Affiliation(s)
- ZunGuo Du
- Department of Pathology, HuaShan Hospital, Fudan University, Shanghai, China; Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China
| | - JunHui Su
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China
| | - ShengLi Lin
- Endoscopy Center, Endoscopy Research Institute, Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Tao Chen
- Endoscopy Center, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - WenChao Gao
- Department of General Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - MengHui Wang
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China
| | - YueHeng Li
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China
| | - Dong Wei
- Department of Anus and Intestine Surgery, PLA Central Hospital 150, Luoyang, Henan, China
| | - ZhiQian Hu
- Department of General Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - ChunFang Gao
- Department of Anus and Intestine Surgery, PLA Central Hospital 150, Luoyang, Henan, China
| | - QingQuan Li
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China.
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Pan X, Feng J, Zhu Z, Yao L, Ma S, Hao B, Zhang G. A positive feedback loop between miR-181b and STAT3 that affects Warburg effect in colon cancer via regulating PIAS3 expression. J Cell Mol Med 2018; 22:5040-5049. [PMID: 30054984 PMCID: PMC6156246 DOI: 10.1111/jcmm.13786] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 06/13/2018] [Indexed: 12/23/2022] Open
Abstract
This study aimed to investigate the relationship between the expression of microRNA (miR)‐181b, protein inhibitor of activated STAT3 (PIAS3) and STAT3, and to examine the function of the miR‐181b/PIAS3/STAT3 axis on the Warburg effect and xenograft tumour growth of colon cancer. Moreover, a positive feedback loop between miR‐181b and STAT3 that regulated the Warburg effect in colon cancer was explored. A luciferase reporter assay was used to identify whether PIAS3 was a direct target of miR‐181b. The gain‐of‐function and loss‐of‐function experiments were performed on HCT 116 cells to investigate the effect of miR‐181b/PIAS3/STAT3 on the Warburg effect and xenograft tumour growth of colon cancer, as determined by commercial kits and xenograft experiments. The relationship between the expression of miR‐181b, PIAS3 and STAT3 in HCT 116 and HT‐29 cells was determined using RT‐qPCR and Western blot. We found miR‐181b was a direct regulator of PIAS3. miR‐181b promoted the Warburg effect and the growth of colon cancer xenografts; however, these effects could be reversed by PIAS3. miR‐181b expression interacted with STAT3 phosphorylation in a positive feedback loop in colon cancer cells via regulating PIAS3 expression. In conclusion, this study for the first time demonstrated that miR‐181b contributed to the Warburg effect and xenograft tumour growth of colon cancer by targeting PIAS3. Moreover, a positive feedback loop between miR‐181b and STAT3 that regulated the Warburg effect in colon cancer was also demonstrated. This study suggested miR‐181b/PIAS3/STAT3 axis as a novel target for colon cancer treatment.
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Affiliation(s)
- Xiaolin Pan
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jin Feng
- Department of General Surgery, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Zhenhua Zhu
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Linhua Yao
- Department of Gastroenterology, The First Affiliated Hospital of Huzhou Teachers College, Huzhou, China
| | - Shijie Ma
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Bo Hao
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Guoxin Zhang
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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