Current Pharmaceutical Design - Online First

Cholesterol is considered a major factor contributing to cardiovascular diseases. Statins, the most commonly prescribed cholesterol-lowering drugs, are known to have various limitations. Inhibition of Adenosine Triphosphate-Citrate Lyase (ACLY) has been proposed as an alternative therapeutic strategy for managing hypercholesterolemia by lowering cholesterol levels. This has led to the discovery of a cell-permeable small molecule ACLY inhibitor.

ACLY enzyme activity was assessed using an ACLY Assay Kit with the ADP-Glo Kinase Assay Kit. HepG2 cells were treated with test compounds to demonstrate cholesterol and fatty acid synthesis. Pharmacokinetic studies were performed on CD-1 mice following a single oral dose of the compounds. Hypercholesterolemia was induced in mice through a High-Fat and High Cholesterol Diet (HFHCD), and drugs were administered orally for six weeks. Serum and hepatic lipid profiles were subsequently analyzed.

To increase the pharmacochemical properties, four analogues of BMS-303141, ID0018, ID0023, ID0085, and ID0106, were designed and synthesized. These compounds showed superior ACLY inhibitory activity and dose-dependent suppression of cholesterol and fatty acid synthesis in HepG2 cells. Among the analogues, ID0085 exhibited the most potent ACLY inhibition (IC50: 45 nM, 10-fold lower than BMS-303141) and achieved near-complete suppression in cholesterol and fatty acid synthesis at the highest concentration. Pharmacokinetic studies revealed improved half-lives and systemic exposures for all analogues. 
In hypercholesterolemic mouse models, test compounds significantly reduced serum total cholesterol 
(32.0-57.3%) and low-density lipoprotein cholesterol (67.5-80.2%) levels compared to the vehicle group. Notably, ID0085 also increased high-density lipoprotein cholesterol levels.

Among the synthesized analogues, ID0085 exhibited the most potent ACLY inhibition, superior pharmacokinetic properties, and significant improvements in both serum and hepatic cholesterol profiles compared to BMS-303141.

Based on the results, ID0085 appears to be the most promising therapeutic candidate for the treatment of hypercholesterolemia.

The combination of Astragalus membranaceus and Safflower (AS) is known for its efficacy in benefiting Qi and activating blood circulation, making it a frequently used empirical combination in traditional Chinese medicine. Numerous reports have highlighted the interventional effect of this combination in treating ischemic stroke (IS). However, the active ingredients and potential mechanisms underlying its treatment of stroke have not been fully elucidated.

Ultra-performance liquid chromatography quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF/MS), along with various data processing methods, were utilized to identify and assess the chemical constituents in rat serum following AS gavage administration. Chemical constituent targets were predicted using the SEA and Swiss Target Prediction databases, while IS-related targets were sourced from the GeneCards, OMIM, and TTD databases. The intersecting targets of constituents and diseases were screened, and a core target network map was constructed using the String database and Cytoscape software. KEGG pathway enrichment of core targets was analyzed using DAVID and Metascape databases. The middle cerebral artery occlusion (MCAO) rat model was established to evaluate the cerebroprotective effects of AS. The accuracy of predicted pathways was validated using immunofluorescence (IF) and Western blot (WB) analyses.

Thirty-five ingredients in serum were identified, and 437 targets and 3748 IS-related targets were identified, 291 of which overlapped. Protein-protein interaction (PPI) analysis predicted 15 major targets, including TNF and MAPK3. KEGG pathway analysis indicated that the MAPK/NF-κB and VEGF/Notch1 signaling pathways may play pivotal roles in the therapeutic effects of AS in IS. Moreover, AS significantly ameliorated neurological and motor function impairments, as well as brain histopathological damage, in MCAO rats. AS treatment led to reduced levels of the inflammatory cytokines IL-6 and TNF-α, inhibited astrocyte hyperactivation, decreased nuclear translocation of NF-κB p65, reduced expression of p-MAPK (Erk1/2)/ MAPK (Erk1/2) and p-NF-κB (p65)/NF-κB (p65) proteins, increased the number of CD31⁺/Ki67⁺ and VEGF⁺/ Ki67⁺-positive vessels, and upregulated the expression of VEGF, VEGFR-2, Notch1, and DLL4 proteins.

AS may regulate MAPK/NF-κB and VEGF/Notch1 pathways to reduce inflammation and promote post-ischemic neovascularization, providing a promising method for the treatment of ischemic stroke.

The progressive neurodegenerative disease known as Alzheimer's disease (AD) is typified by neuroinflammation, amyloid-beta buildup, and cognitive impairment. Current pharmacological treatments merely alleviate symptoms, despite extensive research, which underscores the need for innovative, multi-target medicines. Since apolipoprotein E4 (ApoE4) is a significant genetic risk factor linked to the development of AD, it is a potentially effective treatment target. With their neuroprotective qualities, natural substances like Ginkgolide may help treat some diseases. This study investigates Ginkgolide's potential as a multi-target treatment for AD, with a particular emphasis on how it interacts with the ApoE4 N-terminal domain.

The interaction between Ginkgolide and ApoE4 (PDB ID: 8AX8) was assessed using pharmacokinetic profiling, molecular docking, and molecular dynamics (MD) simulations. MD simulations were used to determine stability, and AutoDock Vina was used to obtain the binding affinity. To predict pharmacokinetics and toxicity, SwissADME and PkCSM were employed. The effectiveness of ginkgolide was contextualized using comparative docking with curcumin and resveratrol.

Ginkgolide formed sustained hydrophobic contacts with important sites and demonstrated a substantial binding affinity (-7.1 kcal/mol) to ApoE4. MD simulations verified negligible fluctuations and complex stability over 100 ns. Pharmacokinetics showed no significant toxicity risks, good gastrointestinal absorption, and favorable blood-brain barrier permeability. In terms of binding affinity and stability, ginkgolide fared better than curcumin and resveratrol, indicating its greater therapeutic potential.

The results indicate that ginkgolide effectively binds and stabilizes the ApoE4 N-terminal domain, supporting its potential role in modulating a key pathological factor in Alzheimer’s disease. Its superior pharmacokinetic profile and interaction dynamics compared to curcumin and resveratrol suggest a broader therapeutic relevance. These in silico insights provide a mechanistic basis for further investigation into ginkgolide’s neuroprotective effects.

The results demonstrated ginkgolide as a potentially effective multi-target treatment for AD through ApoE4 regulation. It is a better option than other natural chemicals because of its potent binding affinity, stability, and pharmacokinetics. These findings highlight the value of in silico methods in the early stages of drug discovery and the need for additional experimental support before they can be used in clinical settings.

The marine ecosystem, known for its diverse biochemistry and organisms adapted to harsh environments, contains numerous plants with promising anticancer potential. Halodule uninervis, a seagrass, contains a variety of bioactive compounds that provide various pharmacological properties. However, its potential anticancer effects against breast cancer remain largely unexplored.

HRLC-MS analysis was conducted to identify the phytochemicals in the ethanolic extract of H. uninervis leaves. Several publicly available databases, including SEA, STP, MALACARDS, DISGENET, and OMIM, were used to identify target genes. Protein-protein interaction (PPI) networks, gene ontology, and pathway analysis were carried out through the STRING and DAVID databases. Molecular docking was performed by Autodock Vina, while molecular dynamics (MD) simulations and MMPBSA analyses were conducted using GROMACS, demonstrating the stability of the complexes up to 200 ns.

The top five therapeutically active phytochemicals were Quercetin, Arborinine, Methyl 3,4,5-trimethoxycinnamate, Citreorosein, and Scopolin. The five hub genes, AKT1, EGFR, TNF, ESR1, and GAPDH, were found by network analyses. Molecular docking and MD simulation demonstrate that Quercetin and Citreorosein are the best phytochemicals exhibiting the highest affinities to breast cancer targets AKT1, EGFR, and ESR1.

For the first time, this in-silico study investigates the potential of citreorosein and quercetin, two phytochemicals predominantly found in H. uninervis leaves, to inhibit the activity of AKT1, EGFR, and ESR1. However, as these results are based on predictive computational analyses, further experimental validation is necessary to confirm their precise mechanisms of action.

Phytochemicals, namely Quercetin and Citreorosein, may have an impact on the progression of breast cancer by binding to the key targets AKT1, ESR1, and EGFR.

Genetic factors play a significant role in the development of leukemia. The overexpression of MDM2 is associated with the progression of certain leukemias. This meta-analysis investigates the relationship between the MDM2 SNP 309T>G and various forms of leukemia across global populations.

A comprehensive literature search was conducted to retrieve genotyping data from twenty case-control studies related to MDM2 SNP 309T>G polymorphism and leukemia. A random-effects model was used to calculate the pooled odds ratio (OR) and 95% confidence interval (95% CI) for the association analysis. MetaGenyo software was utilized to conduct statistical analyses in this meta-analysis.

The findings indicate a significant association between MDM2 309 SNPT>G polymorphism and leukemia in Asian and Caucasian populations. Additionally, this polymorphism is associated with an increased risk of Acute Myeloid Leukemia (AML) and Chronic Myeloid Leukemia (CML), implying that MDM2 may play a role in the pathogenesis of these specific forms of leukemia.

This meta-analysis suggests that MDM2 may represent a susceptibility gene for leukemia risk.

Glioblastoma Multiforme (GBM) is a highly aggressive and fatal brain malignancy, with Temozolomide (TMZ) serving as the first-line chemotherapeutic treatment. However, over 50% of patients do not respond to TMZ, and the underlying mechanisms remain unclear. This study utilized the GeCKO library to identify novel genes involved in TMZ resistance and to explore their functions.

Loss-of-function genes related to TMZ resistance in GBM cells were identified using the GeCKO library and Next-Generation Sequencing (NGS), validated by qPCR and CCK-8 assays. CD99L2 function was assessed through proliferation, migration, and EdU assays in U251 and U87 cells. Tumor samples from 55 stage IV GBM patients were analyzed to explore the correlation between CD99L2 expression and Progression-Free Survival (PFS).

GeCKO library screening identified seven genes associated with TMZ resistance. After validation, CD99L2 was confirmed as a key contributor to TMZ resistance. Knockdown of CD99L2 increased the IC50 of U251 and U87 cells by 1.39- and 1.54-fold, respectively. Conversely, CD99L2 overexpression reduced the IC50 by 0.52- and 0.58-fold. CD99L2 knockdown also promoted tumor proliferation and aggressiveness. Additionally, higher CD99L2 expression was associated with longer PFS in GBM patients (median PFS: 7.87 months vs. 2.7 months, P=0.0003).

The functions of CD99L2 remain poorly understood. A few studies have reported that CD99L2 may serve as an adhesion molecule modulating inflammatory responses. One study has shown that CD99L2 is highly expressed in the brain and affects neuronal excitability. These findings suggest that CD99L2 may play a positive role in the body’s defense against glioma.

This study demonstrated that CD99L2 knockdown promotes TMZ resistance and tumorigenesis in GBM, suggesting its potential as a novel biomarker for TMZ resistance.

Impaired intestinal immune function is commonly observed in neonates with intrauterine growth retardation (IUGR), yet its underlying mechanisms and regulatory pathways remain poorly understood. Therefore, we aimed to investigate gene regulatory patterns and microbiota alterations in IUGR piglets.

Three newborn IUGR piglets and three normal littermates were selected from the same sow and sacrificed at seven days of age. Ileal digesta was collected for 16S rRNA amplicon sequencing (16S-seq), and ileum segments were dissociated for single-cell RNA sequencing (scRNA-seq).

The scRNA-seq results revealed a reduced proportion of plasma B cells in IUGR piglets, along with alterations in the distribution of various T cell subsets. KEGG pathway analysis further indicated a downregulation of the B cell receptor signaling pathway in B cells from IUGR piglets. In contrast, both the T cell receptor signaling pathway and antigen processing and presentation were attenuated in T cells. Pseudotime trajectory analysis suggested that the differentiation of B cells was impaired in IUGR piglets. SCENIC analysis revealed that GATA3, IRF2, and BCL11A were downregulated in T cells of IUGR piglets. The 16S-seq results revealed that α-diversity was lower in IUGR piglets. At the genus level, the relative abundance of Prevotella was significantly lower in IUGR piglets.

Significant changes were identified in the proportions of B and T cells, their associated signaling pathways, and intestinal microbiota composition in IUGR piglets, suggesting underlying immune dysfunction and dysbiosis.

We identified novel immune-related transcription factors and key microbes as potential therapeutic targets, shedding light on strategies for preventing and treating IUGR.