Deficiency in SLC25A15, a hypoxia-responsive gene, promotes hepatocellular carcinoma by reprogramming glutamine metabolism
BACKGROUND & AIMS: The role of solute carrier family 25 member 15 (SLC25A15), a critical component of the urea cycle, in hepatocellular carcinoma (HCC) progression remains poorly understood. This study investigated the impact of SLC25A15 on HCC progression and its mechanisms. - METHODS: We syste...
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| Main Authors: | , , , , , , , , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
2024
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| In: |
Journal of hepatology
Year: 2024, Volume: 80, Issue: 2, Pages: 293-308 |
| ISSN: | 1600-0641 |
| DOI: | 10.1016/j.jhep.2023.10.024 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.jhep.2023.10.024
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| Author Notes: | Qiangnu Zhang, Teng Wei, Wen Jin, Lesen Yan, Lulin Shi, Siqi Zhu, Yu Bai, Yuandi Zeng, Zexin Yin, Jilin Yang, Wenjian Zhang, Meilong Wu, Yusen Zhang, Gongze Peng, Stephanie Roessler, Liping Liu |
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| 245 | 1 | 0 | |a Deficiency in SLC25A15, a hypoxia-responsive gene, promotes hepatocellular carcinoma by reprogramming glutamine metabolism |c Qiangnu Zhang, Teng Wei, Wen Jin, Lesen Yan, Lulin Shi, Siqi Zhu, Yu Bai, Yuandi Zeng, Zexin Yin, Jilin Yang, Wenjian Zhang, Meilong Wu, Yusen Zhang, Gongze Peng, Stephanie Roessler, Liping Liu |
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| 500 | |a Online verfügbar: 30. Oktober 2023 | ||
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| 520 | |a BACKGROUND & AIMS: The role of solute carrier family 25 member 15 (SLC25A15), a critical component of the urea cycle, in hepatocellular carcinoma (HCC) progression remains poorly understood. This study investigated the impact of SLC25A15 on HCC progression and its mechanisms. - METHODS: We systematically investigated the function of SLC25A15 in HCC progression using large-scale data mining and cell, animal, and organoid models. Furthermore, we analyzed its involvement in reprogramming glutamine metabolism. - RESULTS: SLC25A15 expression was significantly decreased in HCC tissues, and patients with low SLC25A15 levels had a poorer prognosis. Hypoxia-exposed HCC cells or tissues had lower SLC25A15 expression. A positive correlation between HNF4A, a transcription factor suppressed by hypoxia, and SLC25A15 was observed in both HCC tissues and cells. Modulating HNF4A levels altered SLC25A15 mRNA levels. SLC25A15 upregulated SLC1A5, increasing glutamine uptake. The reactive metabolic pathway of glutamine was increased in SLC25A15-deficient HCC cells, providing energy for HCC progression through additional lipid synthesis. Ammonia accumulation due to low SLC25A15 levels suppressed the expression of OGDHL (oxoglutarate dehydrogenase L), a switch gene that mediates SLC25A15 deficiency-induced reprogramming of glutamine metabolism. SLC25A15-deficient HCC cells were more susceptible to glutamine deprivation and glutaminase inhibitors. Intervening in glutamine metabolism increased SLC25A15-deficient HCC cells' response to anti-PD-L1 treatment. - CONCLUSION: SLC25A15 is hypoxia-responsive in HCC, and low SLC25A15 levels result in glutamine reprogramming through SLC1A5 and OGDHL regulation, promoting HCC progression and regulating cell sensitivity to anti-PD-L1. Interrupting the glutamine-derived energy supply is a potential therapeutic strategy for treating SLC25A15-deficient HCC. - IMPACT AND IMPLICATIONS: We first demonstrated the tumor suppressor role of solute carrier family 25 member 15 (SLC25A15) in hepatocellular carcinoma (HCC) and showed that its deficiency leads to reprogramming of glutamine metabolism to promote HCC development. SLC25A15 can serve as a potential biomarker to guide the development of precision therapeutic strategies aimed at targeting glutamine deprivation. Furthermore, we highlight that the use of an inhibitor of glutamine utilization can enhance the sensitivity of low SLC25A15 HCC to anti-PD-L1 therapy. | ||
| 650 | 4 | |a Amino Acid Transport System ASC | |
| 650 | 4 | |a Animals | |
| 650 | 4 | |a Biological Transport | |
| 650 | 4 | |a Carcinoma, Hepatocellular | |
| 650 | 4 | |a Glutamine | |
| 650 | 4 | |a Humans | |
| 650 | 4 | |a Hypoxia | |
| 650 | 4 | |a Liver cancer | |
| 650 | 4 | |a Liver Neoplasms | |
| 650 | 4 | |a Minor Histocompatibility Antigens | |
| 650 | 4 | |a SLC25A15 | |
| 650 | 4 | |a Urea cycle | |
| 700 | 1 | |a Wei, Teng |e VerfasserIn |4 aut | |
| 700 | 1 | |a Jin, Wen |e VerfasserIn |4 aut | |
| 700 | 1 | |a Yan, Lesen |e VerfasserIn |4 aut | |
| 700 | 1 | |a Shi, Lulin |e VerfasserIn |4 aut | |
| 700 | 1 | |a Zhu, Siqi |e VerfasserIn |4 aut | |
| 700 | 1 | |a Bai, Yu |e VerfasserIn |4 aut | |
| 700 | 1 | |a Zeng, Yuandi |e VerfasserIn |4 aut | |
| 700 | 1 | |a Yin, Zexin |e VerfasserIn |4 aut | |
| 700 | 1 | |a Yang, Jilin |e VerfasserIn |4 aut | |
| 700 | 1 | |a Zhang, Wenjian |e VerfasserIn |4 aut | |
| 700 | 1 | |a Wu, Meilong |e VerfasserIn |4 aut | |
| 700 | 1 | |a Zhang, Yusen |e VerfasserIn |4 aut | |
| 700 | 1 | |a Peng, Gongze |e VerfasserIn |4 aut | |
| 700 | 1 | |a Rössler, Stephanie |e VerfasserIn |0 (DE-588)1071122991 |0 (DE-627)825603277 |0 (DE-576)255690843 |4 aut | |
| 700 | 1 | |a Liu, Liping |e VerfasserIn |4 aut | |
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