troponin

Tirasemtiv (CK-2017357) 是一种快速骨骼肌型肌钙蛋白复合物激活剂。

Troponin I is a cardiac and skeletal muscle protein useful in the laboratory diagnosis of a heart attack. Troponin I is a part of the troponin protein complex, where it binds to actin in thin myofilaments to hold the actin-tropomyosin complex in place.

EMD57033是一种心脏肌钙蛋白C（cTnC）激活剂，是一种显性的Ca2+增敏剂。EMD57033通过与心脏 慢速骨骼肌钙蛋白C 异构体结合从而发挥促进心脏收缩的功能。

Levosimendan (OR1259) 是一种钙增敏剂，通过以钙依赖性方式与心肌肌钙蛋白 C 结合，增加肌细胞对钙的敏感性来发挥其作用，可治疗急性失代偿性充血性心力衰竭。

3-Cl-DPA, a cardiac troponin activator, acts by a mechanism distinct from bepridil or TFP.

Reldesemtiv (CK-2127107) 是一种快速骨骼肌肌钙蛋白的选择性激活剂，EC50 为 3.4 μM。 Reldesemtiv 提高了心力衰竭模型中的运动表现。

6,6′-Trehalose dioleate（6,6′-TDO）是一种被广泛用于mRNA体内外递送的糖脂化合物。它能高效包裹流感A病毒血凝素A（HA）编码的mRNA，在脂质纳米粒子（LNPs）中使用，用于增强隔离小鼠脾细胞分泌Ifn-γ, Il-2和Tnf-α。在肌肉注射进入小鼠体内后，包含6,6′-TDO的LNPs主要在肝脏与脾脏中集中。区别于未含6,6′-TDO的LNP配方，这种LNPs不会引起血清中血尿素氮（BUN）、乳酸脱氢酶（LDH）、肌钙蛋白I、丙氨酸氨基转移酶（ALT）、及天门冬氨酸氨基转移酶（AST）水平的改变。此外，该LNPs还能提升小鼠血清中IgG1与IgG2a抗体的滴度。

GSK854 是一种具有高选择性和有效性的肌钙蛋白 I 相互作用激酶 (TNNI3K) 抑制剂，抑制小鼠心肌梗死损伤细胞焦亡和细胞凋亡，可限制缺血性心脏的氧化应激、损伤和不良重塑。

Lipoxygenin is an inhibitor of 5-lipoxygenase (5-LO) with an IC50value of 5 μM for inhibition of 5-LO product synthesis in isolated human granulocytes stimulated with the cation ionophore A23187 .1It inhibits hedgehog-dependent signaling in Shh-LIGHT2 cells and TGF-β-, activin A-, bone morphogenic protein (BMP)-, or Wnt-dependent signaling in HEK293T cells (IC50s = 9.3, 3.2, 8.2, 9.6, and 3.7 μM, respectively, in luciferase reporter assays). Lipoxygenin (5 and 10 μM) increases levels of troponin T (TnnT), a marker of cardiomyocyte differentiation, in human induced pluripotent stem cells (iPSCs) stimulated with BMP4 and the glycogen synthase kinase 3 (GSK3) inhibitor CHIR99021 .

Nelutroctiv 是心肌肌钙蛋白的有效激活剂。

SR-33805 is a calcium channel antagonist potentially for the treatment of atherosclerosis and heart failure. SR-33805 restored the MI-altered cell shortening without affecting the Ca(2+) transient amplitude, suggesting an increase of myofilament Ca(2+) sensitivity in MI myocytes. A SR33805-induced sensitization of myofilament activation was found to be associated with a slight increase in myosin light chain-2 phosphorylation and a more significant decrease on troponin I (TnI) phosphorylation. Decreased TnI phosphorylation was related to inhibition of protein kinase A activity by SR-33805.

Anti-MI R injury agent 1 (compound 18) 是一种口服有效的人参三醇衍生物，专用于抗心肌缺血 再灌注 (MI R) 损伤。该化合物能增强经氧-葡萄糖剥夺和再灌注 (OGD R) 诱导心肌细胞损伤模型中的细胞活力，显着缩小大鼠心肌梗死面积，减少循环心肌肌钙蛋白 I (cTnI) 的释放，并减轻心脏组织损害。

CK-963 是一种心肌肌钙蛋白(cTnC)的激活剂，Ki 为 11.5 μM，并能够增强 Sprague-Dawley 大鼠的心肌收缩力。