L-Buthionine-(S,R)-sulfoximine hydrochloride 是一种具有细胞渗透性的、有效的、快速起效的、具有口服活性的、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。

L-Buthionine-(S,R)-sulfoximine hydrochloride is a cell-permeable, potent, fast acting, orally active and irreversible inhibitor of g-glutamylcysteine synthetase and depletes cellular glutathione levels. The IC 50 value of L-Buthionine-(S,R)-sulfoximine on melanoma, breast and ovarian tumor specimens are 1.9 μM, 8.6 μM, and 29 μM, respectively.

Solid

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.
has not independently confirmed the accuracy of these methods. They are for reference only.

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. has not independently confirmed the accuracy of these methods. They are for reference only.

Room temperature in continental US; may vary elsewhere.

4°C, sealed storage, away from moistur In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

[1]. Fruehauf JP, et al. Selective and synergistic activity of L-S,R-buthionine sulfoximine on malignant melanoma is accompanied by decreased expression of glutathione-S-transferase. Pigment Cell Res. 1997 Aug;10(4):236-49.
[2]. Reliene R, et al. Glutathione depletion by buthionine sulfoximine induces DNA deletions in mice. Carcinogenesis. 2006 Feb;27(2):240-4.

In Vitro: DMSO : 250 mg/mL (966.11 mM; Need ultrasonic)H₂O : 70 mg/mL (270.51 mM; Need ultrasonic)配制储备液