semaxanib (SU5416)

A PAH rat model was established by SU5416 (Su) injection combined with chronic hypoxia (Hx)...PF alleviated PAH and endothelial dysfunction by downregulating TRIM24 and preserving SIRT1 function. These findings reveal a novel mechanism by which PF protects against PAH via the TRIM24/SIRT1/NLRP3 axis.

Simultaneously targeting Prrx2 and Hic1 in macrophages significantly alleviated SU5416/hypoxia-induced PH in rats. The differential roles of pulmonary resMФs and recMФs in pulmonary vascular remodeling highlight novel therapeutic targets for pulmonary arterial hypertension treatment, specifically through inhibition of Hic1 and Prrx2 in macrophages.

Despite advancements in anti-angiogenic cancer therapies, such as bevacizumab, late-stage tumors, including advanced melanomas, exhibit mixed clinical responses...This L-EV-mediated increase in endothelial tube formation is sensitive to the effects of sorafenib, a multi-kinase inhibitor, but not SU5416, a selective VEGF-receptor inhibitor...Finally, we show that EV subtypes have distinct effects on the acquisition of angiogenic phenotypes and their roles vary with tumor type. These findings provide new insight into the mechanisms of angiogenic therapy resistance in melanoma and demonstrate the differential functions of EV subtypes in angiogenesis across tumor types.

This study demonstrates that ANXA3 regulates ERS to drive M1 macrophage polarization and inflammation, which subsequently promotes PASMC function and promotes PAH progression. ANXA3 may serve as a novel immunoinflammatory target and potential therapeutic candidate.

This study emphasizes the METTL3/LHPP/LDHA axis's role in enhancing PASMC proliferation and HPH. LHPP may represent a potential therapeutic target for the treatment of hypoxic pulmonary hypertension.

Although some discrepancies between the structural and functional improvement in tumor vasculatures were observed after PE-SU5416 × 3 and Seq × 3, cancer-associated fibroblasts (CAFs) and collagen levels were significantly reduced after PE-SU5416 × 2, PE-SU5416 × 3, Seq × 2, and Seq × 3, suggesting that a possible decrease in interstitial fluid pressure due to the reduction in CAFs and collagen would have compensated for vascular function. Furthermore, PE-SU5416 × 2, PE-SU5416 × 3, Seq × 2, and Seq × 3 significantly decreased tumor growth factor-β (TGF-β), an activator of CAFs, in tumor tissues, suggesting that the reduction in TGF-β levels by PE-SU5416 suppresses CAF activation.

The present findings demonstrated that CCR2 disruption ameliorated PAH in MCT-treated rats, which was associated with the reversal of dysregulated inflammatory pathways and vascular dysfunction and synergized with tadalafil. These findings suggest that CCR2 may be a therapeutic target in intractable PAH patients with a certain CCR2-related inflammatory phenotype and refractory to conventional pulmonary vasodilators.

In exploring the downstream pathways involved, we found AQP1 levels influence the expression of Bcl-2, with enhanced AQP1 levels corresponding to increased Bcl-2 expression, reducing the ratio of BAX to Bcl-2, consistent with apoptosis resistance. These results provide a mechanism by which AQP1 can regulate PASMC fate.

Isatin analogs such as semaxanib and sunitinib were exposed to tyrosine kinase inhibitory properties. The nature of substitution in the N1 region of isatin seems to be able to influence the cytotoxic activity. Based on the obtained results of docking and cytotoxic tests, compound 4d seems to be a good compound for further investigations.

Smooth muscle cell (SMC)-specific HMGB2 knockout or HMGB2-OE (HMGB2 overexpression) mice and HMGB2 silenced rats were used to establish hypoxia+Su5416 (HySu)-induced PH mouse and monocrotaline-induced PH rat models, respectively...Our findings indicate that targeting HMGB2 might be a novel therapeutic strategy for treating PH. Serum HMGB2 levels could serve as a novel biomarker for diagnosing PA hypertension and determining its prognosis.

We discovered that both the mRNA and protein levels of PSEN1 were increased over time in hypoxic rats, monocrotaline (MCT) rats and Su5416/hypoxia (SuHx) mice...PSEN1 can be used as a promising molecular target for treating PAH. PSEN1 inhibitor ELN318463 can prevent and reverse the progression of PH and be developed as a potential anti-PAH drug.