hdac in 5

HDAC-IN-5 is a histone deacetylase (HDAC) inhibitor.

(2E)-N-(4-methoxyphenyl)-3-[3-(4-methylphenyl)-1-phenyl-1H-pyrazol-4-yl]prop-2-enamide 是一种用作分子结构单元的化合物，用于多种有机物的合成。

PDE5/HDAC-IN-1 是磷酸二酯酶 5 (PDE5) 和 HDAC 的有效抑制剂，他们的 IC50 值分别为 46.3 nM 和 14.5 nM。PDE5/HDAC-IN-1 能够诱导细胞凋亡（apoptosis），表现出抗癌效果。

HDAC6-IN-5 (化合物 11b) 是有效的、血脑屏障通透性的 HDAC6抑制剂(IC50= 0.025 μM)。HDAC6-IN-5 抑制 AChE 活性和 Aβ1-42自聚集和，IC50分别为 0.88 和 1.1 μM。HDAC6-IN-5 能够促进神经突起生长，且无明显神经毒性。

HDAC1-IN-5, a potent inhibitor of HDAC1 with an IC50 value of 15 nM, also exhibits inhibitory activity towards HDAC6 with an IC50 value of 20 nM. In cancer cells, HDAC1-IN-5 enhances the acetylation of both histone H3 and α-tubulin, leading to the activation of caspase 3 and induction of apoptosis. Additionally, HDAC1-IN-5 binds with DNA, causing chromatin damage. Furthermore, it demonstrated strong inhibitory activity against tumor growth in xenograft mice. [1]

HDAC8-IN-5 (Compound 6a)，一种HDAC8抑制剂，其半抑制浓度（IC50）为28 nM。该化合物主要适用于癌症研究领域。

Quisinostat dihydrochloride (JNJ26854165(Quisinostat) 2HCl) 是一种有口服活性，高效的 pan-HDAC 抑制剂，具有广泛的抗肿瘤活性。它对 HDAC1、HDAC2、HDAC4、HDAC10和HDAC11 的IC50值分别为 0.11 nM、0.33 nM、0.64 nM、0.46 nM 和 0.37 nM。

HDAC-IN-64 (Compound 13) 为HDAC抑制剂，对HDAC4/6的IC50值为24 nM及85 nM。其对前列腺癌（PCA）细胞表现出抗增殖与抗迁移效果，并能抑制LNCaP和RWPE-1细胞的生长，GI50值分别达到0.32 μM与1.1 μM。

HDAC-IN-53是一种口服活性的选择性HDAC1-3抑制剂，其IC50分别为47 nM、125 nM和450 nM。该化合物不针对II类HDAC(HDAC4、5、6、7、9；IC50>10 μM)展现抑制作用。HDAC-IN-53能够诱导caspase依赖的细胞凋亡并在裸鼠中显著抑制人肿瘤异种移植物生长，同时抑制携带MC38结肠癌的免疫活性小鼠的肿瘤发展。

HDAC-IN-38 是一种 HDAC 的有效抑制剂。HDAC-IN-38 对 HDAC1、2、3、5、6 和 8 具有类似的微摩尔抑制作用，也可以提高组蛋白乙酰化水平 (H3K14 或 H4K5)。HDAC-IN-38 能够提高脑血流量 (CBF)，减轻认知障碍，改善海马萎缩。

Theophylline (1,3-Dimethylxanthine) sodium glycinate 是一种有效的磷酸二酯酶 (PDE) 抑制剂，可抑制 PDE3 活性以松弛气道平滑肌。Theophylline sodium glycinate 可用于研究哮喘和慢性阻塞性肺疾病 (COPD) 。Theophylline sodium glycinate 也是一种腺苷受体拮抗剂和组蛋白脱乙酰酶 (HDAC) 激活剂。 Theophylline sodium glycinate 通过增加 IL-10 和抑制 NF-κB 的核输入而具有抗炎活性。Theophyllin sodium glycinate 可诱导细胞凋亡。

HDAC-IN-62（Compound 5），是一款针对HDAC6/8/11的HDAC抑制剂，IC50分别为0.78、1.0、1.2μM。该化合物通过诱导自噬（Autophagy）来抑制微胶质细胞的激活，进而抑制一氧化氮产生，显示出抗炎和抗抑郁的效果。此外，HDAC-IN-62还能抑制实验小鼠大脑中的微胶质细胞活化。

Givinostat (ITF-2357) is a HDAC inhibitor with an IC50 of 198 and 157 nM for HDAC1 and HDAC3, respectively. Givinostat (ITF2357) suppresses total LPS-induced IL-1β production robustly compared with the reduction by ITF3056. At 25, 50, and 100 nM, Givinostat reduced IL-1β secretion more than 70%. Givinostat (ITF-2357) suppresses the production of IL-6 in PBMCs stimulated with TLR agonists as well as the combination of IL-12 plus IL-18. IL-6 secretion decreases to 50% at 50 nM Givinostat, but at 100 and 200 nM, there is no reduction[1]. As shown by the CCK-8 assay, Givinostat (ITF-2357) inhibits JS-1 cell proliferation in a concentration-dependent manner. Treatment with Givinostat ≥500 nM is associated with significant inhibition of JS-1 cell proliferation (P<0.01). Also, the cell inhibition rate significantly differs between the group cotreated with Givinostat ≥250 nM plus LPS and the group without LPS treatment (same Givinostat concentration) (P<0.05)[2]. Givinostat (ITF2357) at 10 mg kg is used as a positive control and, as expected, reduced serum TNFα by 60%. Strikingly, pretreatment of ITF3056 starting at 0.1 mg kg significantly reduces the circulating TNFα by nearly 90%. To achieve a significant increase in serum IL-1β production, a higher dose of LPS is injected (10 mg kg), and blood is collected after 4 h. Similarly, when pretreated with lower doses of Givinostat (ITF-2357) (1 or 5 mg kg), there is a 22% reduction for 1 mg kg and 40% for 5 mg kg[1]. [1]. Li S, et al. Specific inhibition of histone deacetylase 8 reduces gene expression and production of proinflammatory cytokines in vitro and in vivo. J Biol Chem. 2015 Jan 23;290(4):2368-78. [2]. Wang YG, et al. Givinostat inhibition of hepatic stellate cell proliferation and protein acetylation. World J Gastroenterol. 2015 Jul 21;21(27):8326-39. [3]. Leoni F, et al. The histone deacetylase inhibitor ITF2357 reduces production of pro-inflammatory cytokines in vitro and systemic inflammation in vivo. Mol Med. 2005 Jan-Dec;11(1-12):1-15.

CHDI-390576 是一种具有中枢神经系统渗透性、选择性和高效性的二苯甲酰异羟肟酸 IIa 类组蛋白脱乙酰酶(HDAC) 抑制剂，抑制 IIa 类 HDAC 4、HDAC 5、HDAC 7、HDAC 9 ，可用于研究癌症。

BPR1J-340 is a potent and selective FLT3 inhibitor with potential anticancer activity. BPR1J-340 was identified as a novel potent FLT3 inhibitor by biochemical kinase activity (IC50 approximately 25 nM) and cellular proliferation (GC50 approximately 5 nM) assays. BPR1J-340 inhibited the phosphorylation of FLT3 and STAT5 and triggered apoptosis in FLT3-ITD(+) AML cells. The pharmacokinetic parameters of BPR1J-340 in rats were determined. BPR1J-340 also demonstrated pronounced tumor growth inhibition and regression in FLT3-ITD(+) AML murine xenograft models. The combination treatment of the HDAC inhibitor vorinostat (SAHA) with BPR1J-340 synergistically induced apoptosis via Mcl-1 down-regulation in MOLM-13 AML cells, indicating that the combination of selective FLT3 kinase inhibitors and HDAC inhibitors could exhibit clinical benefit in AML therapy.