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L-Buthionine-(S,R)-sulfoximine

CAS No. : 83730-53-4

MCE 国际站：L-Buthionine-(S,R)-sulfoximine

产品活性：L-Buthionine-(S,R)-sulfoximine 是一种具有细胞渗透性的、有效的、快速起效的、不可逆的 G-谷氨酸半胱氨酸合成酶 (γ-glutamylcysteine synthetase) 抑制剂，可降低细胞内谷胱甘肽的水平，其对黑色素瘤、乳腺卵巢癌标本的 IC₅₀ 值分别为1.9 μM、8.6 μM 和29 μM。

研究领域：Apoptosis

作用靶点：Ferroptosis

In Vitro: L-Buthionine-(S,R)-sulfoximine (BSO: 50 μM) treatment for 48 hr results in a 95% decrease in ZAZ and M14 melanoma cell line GSH levels, and a 60% decrease in GST enzyme activity. GST-π protein and mRNA levels are significantly reduced in both cell lines.
L-Buthionine-(S,R)-sulfoximine (BSO) induces oxidative stress in a cell by irreversibly inhibiting g-glutamylcysteine synthetase, an essential enzyme for the synthesis of glutathione (GSH).
L-Buthionine-(S,R)-sulfoximine (BSO) induces ferroptosis in cancer cells.

In Vivo: BSO causes an elevated frequency of DNA deletions during mouse development. BSO treatment reduced GSH concentration in mouse fetuses by 55% and 70% at 2 mM and 20 mM BSO doses, respectively, compared to untreated mice. Co-treatment with 2 mM BSO and 20 mM NAC depleted GSH to a similar extent as 2 mM BSO, consistent with the function of BSO to inhibit the g-GCS enzyme indispensable for GSH synthesis. Like GSH, cysteine levels dropped following BSO treatment.

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