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アイテム
腫瘍における老化細胞を検出・除去する放射性薬剤の開発
https://repo.qst.go.jp/records/2002217
https://repo.qst.go.jp/records/2002217f52a544c-a522-4ecb-bdf6-6ff0fbbd20a1
| アイテムタイプ | 会議発表用資料 / Presentation(1) | |||||||
|---|---|---|---|---|---|---|---|---|
| 公開日 | 2025-06-24 | |||||||
| タイトル | ||||||||
| タイトル | 腫瘍における老化細胞を検出・除去する放射性薬剤の開発 | |||||||
| 言語 | en | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_c94f | |||||||
| 資源タイプ | conference presentation | |||||||
| 著者 |
Zhang Ming-Rong
× Zhang Ming-Rong
|
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| 抄録 | ||||||||
| 内容記述 | Inhibiting glutamine metabolism has been proposed as a potential treatment strategy for improving non-alcoholic steatohepatitis (NASH). However, effective methods for assessing dynamic metabolic responses during interventions targeting glutaminolysis have not yet emerged. Here, we developed a positron emission tomography (PET) imaging platform using L-[5-11C]glutamine ([11C]Gln) and evaluated its efficacy in NASH mice undergoing metabolic therapy with bis-2-(5-phenylacetamido-1,3,4-thiadiazol-2-yl)ethyl sulfide (BPTES), a glutaminase 1 (GLS1) inhibitor that intervenes in the first and rate-limiting step of glutaminolysis. PET imaging with [11C]Gln effectively delineated the pharmacokinetics of L-glutamine, capturing its temporal-spatial pattern of action within the body. Furthermore, [11C] Gln PET imaging revealed a significant increase in hepatic uptake in methionine and choline deficient (MCD)-fed NASH mice, whereas systemic therapeutic interventions with BPTES reduced the hepatic avidity of [11C]Gln in MCD-fed mice. This reduction in [11C]Gln uptake correlated with a decrease in GLS1 burden and improvements in liver damage, indicating the efficacy of BPTES in mitigating NASHrelated metabolic abnormalities. These results suggest that [11C]Gln PET imaging can serve as a noninvasive diagnostic platform for whole-body, real-time tracking of responses of glutaminolysis to GLS1 manipulation in NASH, and it may be a valuable tool for the clinical management of patients with NASH undergoing glutaminolysis-based metabolic therapy. | |||||||
| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||||
| 内容記述 | 2025 Neuroendocrine Tumors Theranostics Forum, Nuclear Medicine Branch of Jiangsu Medical Association | |||||||
| 発表年月日 | ||||||||
| 日付 | 2025-07-20 | |||||||
