H 2 S 是一种参与许多生理和病理过程的气体信号分子。一般来说,细胞内H 2 S(<1 μM)的水平远低于GSH(~1-10 mM),这导致在活体生物系统中选择性检测和分化内源性H 2 S的剩余挑战。为此,我们定量地证明了 NBD 胺的硫解对 H 2 S 的选择性高于 GSH 的选择性,而不是芳基叠氮化物的还原。随后,我们开发了第一个基于 NBD 的细胞可捕获探针1 ( AM-BODIPY-NBD ),用于细胞内 H 2 S 的高选择性和超灵敏成像。探针1与 H 2 S/酯酶反应产生明亮的 BODIPY(量子产率 0.42)和 15.7 nM 的检测限后,在 520 nm 处显示出 207 倍的荧光增强。探针1是水溶性的、可捕获细胞的且无细胞毒性。基于这种出色的化学工具,测量了不同细胞系中基础 H 2 S 的相对水平,以揭示内源性 H 2 S 与结肠癌细胞和乳腺癌细胞的转移潜能之间的正相
H 2 S 是一种参与许多生理和病理过程的气体信号分子。一般来说,细胞内H 2 S(<1 μM)的水平远低于GSH(~1-10 mM),这导致在活体生物系统中选择性检测和分化内源性H 2 S的剩余挑战。为此,我们定量地证明了 NBD 胺的硫解对 H 2 S 的选择性高于 GSH 的选择性,而不是芳基叠氮化物的还原。随后,我们开发了第一个基于 NBD 的细胞可捕获探针1 ( AM-BODIPY-NBD ),用于细胞内 H 2 S 的高选择性和超灵敏成像。探针1与 H 2 S/酯酶反应产生明亮的 BODIPY(量子产率 0.42)和 15.7 nM 的检测限后,在 520 nm 处显示出 207 倍的荧光增强。探针1是水溶性的、可捕获细胞的且无细胞毒性。基于这种出色的化学工具,测量了不同细胞系中基础 H 2 S 的相对水平,以揭示内源性 H 2 S 与结肠癌细胞和乳腺癌细胞的转移潜能之间的正相
Synthesis, composition and use of novel therapeutic and cosmetic Schiff base products formed by reaction of a carbonyl containing moeity with a transimination nucleophilic catalyst and the use of transimination nucleophilic catalysts to increase the rate at which carbonyl containing therapeutic and cosmetic actives form Schiff base products with biological amines
申请人:Isaacman Steven
公开号:US09365532B1
公开(公告)日:2016-06-14
The present invention relates to the synthesis, composition and use of novel moieties formed by reacting a transimination nucleophilic catalyst, molecular or polymeric, with carbonyl-containing therapeutic or cosmetic moieties. The resultant Schiff base product is highly reactive towards transimination with a biological amine. The catalyst and carbonyl-containing moiety can be molecular or polymeric, and the resultant chemical and physical properties of the Schiff base products can be engineered by appropriate selection of said catalyst. The present invention also relates to the synthesis, composition and use of novel moieties that are used as actives in sunless tanning preparations. The present invention also relates to the use of transimination nucleophilic catalysts to increase the rate at which a carbonyl-containing moiety reacts with a biological amine. The present invention also relates to the use of transimination nucleophilic catalysts to increase the rate and efficacy of commercial sunless tanning preparations. Improvements on stability and efficacy of said preparations are disclosed. While the invention has been described in terms of its preferred embodiments, those skilled in the art will recognize that the invention can be practiced with modification within the spirit and scope of the appended claims. Accordingly, the present invention should not be limited to the embodiments as described above, but should further include all modifications and equivalents thereof within the spirit and scope of the description provided herein.
ANTI-TUMOR AND ANTI-INFLAMMATORY DICINNAMOYL-GLYCEROL ESTERS AND THEIR ANALOGUES
申请人:Lowe Henry
公开号:US20130210913A1
公开(公告)日:2013-08-15
Synthetic dicinnamate compounds and their analogues are disclosed that exhibit anti-tumor activity and/or an anti-inflammatory activity, and have beneficial activity principally in destroying cancer cells. Furthermore, methods for the extraction of the extracts are disclosed.
differentiation of endogenous H2S in live biosystems. To this end, we quantitatively demonstrate that the thiolysis of NBD amine has much higher selectivity for H2S over GSH than that of the reduction of aryl azide. Subsequently, we developed the first NBD-based cell-trappable probe 1 (AM-BODIPY-NBD) for highly selective and ultrasensitiveimaging of intracellular H2S. Probe 1 demonstrates a 207-fold fluorescence
H 2 S 是一种参与许多生理和病理过程的气体信号分子。一般来说,细胞内H 2 S(<1 μM)的水平远低于GSH(~1-10 mM),这导致在活体生物系统中选择性检测和分化内源性H 2 S的剩余挑战。为此,我们定量地证明了 NBD 胺的硫解对 H 2 S 的选择性高于 GSH 的选择性,而不是芳基叠氮化物的还原。随后,我们开发了第一个基于 NBD 的细胞可捕获探针1 ( AM-BODIPY-NBD ),用于细胞内 H 2 S 的高选择性和超灵敏成像。探针1与 H 2 S/酯酶反应产生明亮的 BODIPY(量子产率 0.42)和 15.7 nM 的检测限后,在 520 nm 处显示出 207 倍的荧光增强。探针1是水溶性的、可捕获细胞的且无细胞毒性。基于这种出色的化学工具,测量了不同细胞系中基础 H 2 S 的相对水平,以揭示内源性 H 2 S 与结肠癌细胞和乳腺癌细胞的转移潜能之间的正相