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    • 3. 发明申请
    • NITROSATED HEMOGLOBINS AND THERAPEUTIC USES THEREFOR
    • 硝酸羟胺和其治疗用途
    • WO1997010265A1
    • 1997-03-20
    • PCT/US1996014659
    • 1996-09-13
    • DUKE UNIVERSITY MEDICAL CENTERSTAMLER, Jonathan, S.
    • DUKE UNIVERSITY MEDICAL CENTER
    • C07K14/00
    • C07K14/00A61K31/00A61K31/04A61K31/095A61K31/195A61K35/18A61K38/42A61K47/6445A61K47/6901G01N21/631G01N21/76G01N33/721Y02A50/411Y10S514/832Y10S530/829A61K2300/00
    • S-nitrosothiols (RSNOs) can donate the NO group to the beta 93 cysteine residues of hemoglobin (Hb) without inactivating the heme. S-nitrosylation of Hb is under the allosteric control of oxygen and the oxidation state of heme. NO group release from S-nitrosohemoglobin (SNO-Hb) is further facilitated by intracellular low molecular weight thiols, forming RSNOs which can be exported from the erythrocyte to regulate blood pressure and platelet activation. SNO-Hb can be formed by reaction of Hb with S-nitrosothiol. This procedure avoids oxidation of the heme. Other methods can be used which are not specific only for thiol groups, but which nitrosate Hb more extensively, and may produce polynitrosated metHb as a product or intermediate product of the method. SNO-Hb in its various forms and combinations thereof (oxy, deoxy, met; specifically S-nitrosylated, or nitrosated or nitrated to various extents) can be administered to an animal or human where it is desired to oxygenate, to scavenge free radicals, or to release NO groups to tissues. Thiols and/or NO donating agents can also be administered to enhance the transfer of NO groups. Examples of conditions to be treated by SNO-Hbs or other nitrosated or nitrated forms of Hb include ischemic injury, hypertension, angina, reperfusion injury and inflammation, and disorders characterized by thrombosis.
    • S-亚硝基硫醇(RSNO)可以将NO组提供给血红蛋白(Hb)的β93半胱氨酸残基而不使血红素失活。 Hb的S-亚硝基化在氧的变构控制下以及血红素的氧化态。 通过细胞内低分子量硫醇进一步促进了S-亚硝基血红蛋白(SNO-Hb)的NO组释放,形成可以从红细胞输出以调节血压和血小板活化的RSNO。 可以通过Hb与S-亚硝基硫醇的反应形成SNO-Hb。 该方法避免血红素的氧化。 可以使用其他方法,其不仅仅是硫醇基团特异性,而且更广泛地是亚硝酸盐Hb,并且可以产生作为该方法的产物或中间产物的多硝基化metHb。 SNO-Hb以其各种形式及其组合(氧,脱氧,饱和,特异地S-亚硝基化,或亚硝化或硝化至各种程度)可以施用于需要含氧化的动物或人,以清除自由基, 或将NO +释放到组织中。 也可以施用硫醇和/或NO给药剂以增强NO +转移。 由SNO-Hbs或其他亚硝化或硝化形式的Hb治疗的病症的实例包括缺血性损伤,高血压,心绞痛,再灌注损伤和炎症以及以血栓形成为特征的疾病。