Acta Pharmaceutica Sinica. B最新文献

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Advancements in precision nanomedicine design targeting the anoikis-platelet interface of circulating tumor cells 针对循环肿瘤细胞的anoikis-血小板界面的精准纳米药物设计进展
IF 14.7 1区 医学
Acta Pharmaceutica Sinica. B Pub Date : 2024-08-01 DOI: 10.1016/j.apsb.2024.04.034
{"title":"Advancements in precision nanomedicine design targeting the anoikis-platelet interface of circulating tumor cells","authors":"","doi":"10.1016/j.apsb.2024.04.034","DOIUrl":"10.1016/j.apsb.2024.04.034","url":null,"abstract":"<div><p>Tumor metastasis, the apex of cancer progression, poses a formidable challenge in therapeutic endeavors. Circulating tumor cells (CTCs), resilient entities originating from primary tumors or their metastases, significantly contribute to this process by demonstrating remarkable adaptability. They survive shear stress, resist anoikis, evade immune surveillance, and thwart chemotherapy. This comprehensive review aims to elucidate the intricate landscape of CTC formation, metastatic mechanisms, and the myriad factors influencing their behavior. Integral signaling pathways, such as integrin-related signaling, cellular autophagy, epithelial-mesenchymal transition, and interactions with platelets, are examined in detail. Furthermore, we explore the realm of precision nanomedicine design, with a specific emphasis on the anoikis‒platelet interface. This innovative approach strategically targets CTC survival mechanisms, offering promising avenues for combatting metastatic cancer with unprecedented precision and efficacy. The review underscores the indispensable role of the rational design of platelet-based nanomedicine in the pursuit of restraining CTC-driven metastasis.</p></div>","PeriodicalId":6906,"journal":{"name":"Acta Pharmaceutica Sinica. B","volume":null,"pages":null},"PeriodicalIF":14.7,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2211383524001771/pdfft?md5=02dd6a13aa3311e047ad1f8463a34c1e&pid=1-s2.0-S2211383524001771-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141040873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Discovery of first-in-class DOT1L inhibitors against the R231Q gain-of-function mutation in the catalytic domain with therapeutic potential of lung cancer 发现针对催化域 R231Q 功能增益突变的第一类 DOT1L 抑制剂,具有治疗肺癌的潜力
IF 14.7 1区 医学
Acta Pharmaceutica Sinica. B Pub Date : 2024-08-01 DOI: 10.1016/j.apsb.2024.03.018
{"title":"Discovery of first-in-class DOT1L inhibitors against the R231Q gain-of-function mutation in the catalytic domain with therapeutic potential of lung cancer","authors":"","doi":"10.1016/j.apsb.2024.03.018","DOIUrl":"10.1016/j.apsb.2024.03.018","url":null,"abstract":"<div><p>Recent research certified that DOT1L and its mutations represented by R231Q were potential targets for the treatment of lung cancer. Herein, a series of adenosine-containing derivatives were identified with DOT1L<sup>R231Q</sup> inhibition through antiproliferation assay and Western blot analysis in the H460<sup>R231Q</sup> cell. The most promising compound <strong>37</strong> significantly reduced DOT1L<sup>R231Q</sup> mediated H3K79 methylation and effectively inhibited the proliferation, self-renewal, migration, and invasion of lung cancer cell lines at low micromolar concentrations. The cell permeability and cellular target engagement of <strong>37</strong> were verified by both CETSA and DARTS assays. In the H460<sup>R231Q OE</sup> cell-derived xenograft (CDX) model, <strong>37</strong> displayed pronounced tumor growth inhibition after intraperitoneal administration at 20 mg/kg dose for 3 weeks (TGI = 54.38%), without obvious toxicities. A pharmacokinetic study revealed that <strong>37</strong> possessed tolerable properties (<em>t</em><sub>1/2</sub> = 1.93 ± 0.91 h, <em>F</em> = 97.2%) after intraperitoneal administration in rats. Mechanism study confirmed that <strong>37</strong> suppressed malignant phenotypes of lung cancer carrying R231Q gain-of-function mutation <em>via</em> the MAPK/ERK signaling pathway. Moreover, analysis of the binding modes between molecules and DOT1L<sup>WT/R231Q</sup> proteins put forward the “Induced-fit” allosteric model in favor to the discovery of potent DOT1L candidates.</p></div>","PeriodicalId":6906,"journal":{"name":"Acta Pharmaceutica Sinica. B","volume":null,"pages":null},"PeriodicalIF":14.7,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2211383524000996/pdfft?md5=7409d9594a0368167ad66f0f09ac63e7&pid=1-s2.0-S2211383524000996-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140182152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Phenylalanine deprivation inhibits multiple myeloma progression by perturbing endoplasmic reticulum homeostasis 剥夺苯丙氨酸可通过扰乱内质网稳态抑制多发性骨髓瘤的进展
IF 14.7 1区 医学
Acta Pharmaceutica Sinica. B Pub Date : 2024-08-01 DOI: 10.1016/j.apsb.2024.04.021
{"title":"Phenylalanine deprivation inhibits multiple myeloma progression by perturbing endoplasmic reticulum homeostasis","authors":"","doi":"10.1016/j.apsb.2024.04.021","DOIUrl":"10.1016/j.apsb.2024.04.021","url":null,"abstract":"<div><p>Amino acid metabolic remodeling is a hallmark of cancer, driving an increased nutritional demand for amino acids. Amino acids are pivotal for energetic regulation, biosynthetic support, and homeostatic maintenance to stimulate cancer progression. However, the role of phenylalanine in multiple myeloma (MM) remains unknown. Here, we demonstrate that phenylalanine levels in MM patients are decreased in plasma but elevated in bone marrow (BM) cells. After the treatment, phenylalanine levels increase in plasma and decrease in BM. This suggests that changes in phenylalanine have diagnostic value and that phenylalanine in the BM microenvironment is an essential source of nutrients for MM progression. The requirement for phenylalanine by MM cells exhibits a similar pattern. Inhibiting phenylalanine utilization suppresses MM cell growth and provides a synergistic effect with Bortezomib (BTZ) treatment <em>in vitro</em> and murine models. Mechanistically, phenylalanine deprivation induces excessive endoplasmic reticulum stress and leads to MM cell apoptosis through the ATF3–CHOP–DR5 pathway. Interference with ATF3 significantly affects phenylalanine deprivation therapy. In conclusion, we have identified phenylalanine metabolism as a characteristic feature of MM metabolic remodeling. Phenylalanine is necessary for MM proliferation, and its aberrant demand highlights the importance of low-phenylalanine diets as an adjuvant treatment for MM.</p></div>","PeriodicalId":6906,"journal":{"name":"Acta Pharmaceutica Sinica. B","volume":null,"pages":null},"PeriodicalIF":14.7,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S221138352400162X/pdfft?md5=4b419060b041027996b20700822930b3&pid=1-s2.0-S221138352400162X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140842493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Inhalable nanoparticles with enhanced cuproptosis and cGAS–STING activation for synergistic lung metastasis immunotherapy 具有增强杯突和 cGAS-STING 激活功能的可吸入纳米粒子,用于肺转移瘤的协同免疫疗法
IF 14.7 1区 医学
Acta Pharmaceutica Sinica. B Pub Date : 2024-08-01 DOI: 10.1016/j.apsb.2024.04.028
{"title":"Inhalable nanoparticles with enhanced cuproptosis and cGAS–STING activation for synergistic lung metastasis immunotherapy","authors":"","doi":"10.1016/j.apsb.2024.04.028","DOIUrl":"10.1016/j.apsb.2024.04.028","url":null,"abstract":"<div><p>Due to the insufficient Cu<sup>+</sup> accumulation, Cu<sup>+</sup> efflux mechanism, and highly immunosuppressive tumor microenvironment (TME) in lung metastasis, the cuproptosis efficacy is limited. Herein, an inhalable nanodevice (CLDCu) is constructed to successfully overcome the drawbacks of cuproptosis. CLDCu consists of a Cu<sup>2+</sup>-chitosan shell and low molecular weight heparin-tocopherol succinate (LMWH-TOS, LT) core with disulfiram (DSF) loading. The prepared CLDCu can be inhaled and accumulate in large amounts in lung lesions (63.6%) with 56.5 times higher than intravenous injection. Within tumor cells, the mild acidity triggers the co-release of DSF and Cu<sup>2+</sup>, thus generating bis(diethyldithiocarbamate)-copper (CuET) to block Cu<sup>+</sup> efflux protein ATP7B and forming toxic Cu<sup>+</sup>, leading to enhanced cuproptosis. Meanwhile, the released chitosan cooperates with CLDCu-induced cuproptosis to activate stimulator of interferon genes (STING) pathway, which significantly potentiates dendritic cells (DCs) maturation, as wells as evokes innate and adaptive immunity. In lung metastatic mice model, CLDCu is found to induce cuproptosis and reverse the immunosuppressive TME by inhalation administration. Moreover, CLDCu combined with anti-programmed cell death protein ligand-1 antibody (aPD-L1) provokes stronger antitumor immunity. Therefore, nanomedicine that combines cuproptosis with STING activation is a novel strategy for tumor immunotherapy.</p></div>","PeriodicalId":6906,"journal":{"name":"Acta Pharmaceutica Sinica. B","volume":null,"pages":null},"PeriodicalIF":14.7,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2211383524001692/pdfft?md5=9e446719e44027e7fac0982dff7a7383&pid=1-s2.0-S2211383524001692-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140938819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mechanical regulation of lipid and sugar absorption by Piezo1 in enterocytes 肠细胞中 Piezo1 对脂类和糖类吸收的机械调控
IF 14.7 1区 医学
Acta Pharmaceutica Sinica. B Pub Date : 2024-08-01 DOI: 10.1016/j.apsb.2024.04.016
{"title":"Mechanical regulation of lipid and sugar absorption by Piezo1 in enterocytes","authors":"","doi":"10.1016/j.apsb.2024.04.016","DOIUrl":"10.1016/j.apsb.2024.04.016","url":null,"abstract":"<div><p>Obesity is primarily caused by excessive intake as well as absorption of sugar and lipid. Postprandial surge in distention pressure and intestinal motility accelerates the absorption of nutrients. The response of intestinal epithelial cells to mechanical stimulation is not fully understood. Piezo1, a mechanosensitive ion channel, is widely expressed throughout the digestive tract. However, its function in intestinal nutrient absorption is not yet clear. In our study, excessive lipid deposition was observed in the duodenum of obese patients, while duodenal Piezo1–CaMKK2–AMPK<em>α</em> was decreased when compared to normal-weight individuals. Under high-fat diet condition, the <em>Piezo1</em><sup><em>iKO</em></sup> mice exhibited abnormally elevated sugar and lipid absorption as well as severe lipid deposition in the duodenum and liver. These phenotypes were mainly caused by the inhibition of duodenal CaMKK2–AMPK<em>α</em> and the upregulation of SGLT1 and DGAT2. In contrast, Yoda1, a Piezo1 agonist, was found to reduce intestinal lipid absorption in diet induced obese mice. Overexpression of Piezo1, stretch and Yoda1 inhibited lipid accumulation and the expression of DGAT2 and SGLT1, whereas knockdown of Piezo1 stimulated lipid accumulation and DGAT2 in Caco-2 cells. Our study reveals a previously unexplored mechanical regulation of nutrient absorption in intestinal epithelial cells, which may shed new light on the therapy of obesity.</p></div>","PeriodicalId":6906,"journal":{"name":"Acta Pharmaceutica Sinica. B","volume":null,"pages":null},"PeriodicalIF":14.7,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S221138352400145X/pdfft?md5=18a1417a4f2aeecb2a7f5ebf177873b9&pid=1-s2.0-S221138352400145X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140776113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Unlocking T cell exhaustion: Insights and implications for CAR-T cell therapy 破解 T 细胞衰竭:对 CAR-T 细胞疗法的见解和影响
IF 14.7 1区 医学
Acta Pharmaceutica Sinica. B Pub Date : 2024-08-01 DOI: 10.1016/j.apsb.2024.04.022
{"title":"Unlocking T cell exhaustion: Insights and implications for CAR-T cell therapy","authors":"","doi":"10.1016/j.apsb.2024.04.022","DOIUrl":"10.1016/j.apsb.2024.04.022","url":null,"abstract":"<div><p>Chimeric antigen receptor T (CAR-T) cell therapy as a form of adoptive cell therapy (ACT) has shown significant promise in cancer treatment, demonstrated by the FDA-approved CAR-T cell therapies targeting CD19 or B cell maturation antigen (BCMA) for hematological malignancies, albeit with moderate outcomes in solid tumors. However, despite these advancements, the efficacy of CAR-T therapy is often compromised by T cell exhaustion, a phenomenon that impedes the persistence and effector function of CAR-T cells, leading to a relapse rate of up to 75% in patients treated with CD19 or CD22 CAR-T cells for hematological malignancies. Strategies to overcome CAR-T exhaustion employ state-of-the-art genomic engineering tools and single-cell sequencing technologies. In this review, we provide a comprehensive understanding of the latest mechanistic insights into T cell exhaustion and their implications for the current efforts to optimize CAR-T cell therapy. These insights, combined with lessons learned from benchmarking CAR-T based products in recent clinical trials, aim to address the challenges posed by T cell exhaustion, potentially setting the stage for the development of tailored next-generation approaches to cancer treatment.</p></div>","PeriodicalId":6906,"journal":{"name":"Acta Pharmaceutica Sinica. B","volume":null,"pages":null},"PeriodicalIF":14.7,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2211383524001631/pdfft?md5=28c821d03803398a737e8a7cae3eca5b&pid=1-s2.0-S2211383524001631-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140795624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Endoplasmic reticulum-targeted delivery of celastrol and PD-L1 siRNA for reinforcing immunogenic cell death and potentiating cancer immunotherapy 内质网靶向递送塞拉斯特罗和 PD-L1 siRNA,用于强化免疫原性细胞死亡和提高癌症免疫疗法的疗效
IF 14.7 1区 医学
Acta Pharmaceutica Sinica. B Pub Date : 2024-08-01 DOI: 10.1016/j.apsb.2024.04.010
{"title":"Endoplasmic reticulum-targeted delivery of celastrol and PD-L1 siRNA for reinforcing immunogenic cell death and potentiating cancer immunotherapy","authors":"","doi":"10.1016/j.apsb.2024.04.010","DOIUrl":"10.1016/j.apsb.2024.04.010","url":null,"abstract":"<div><p>The prospect of employing chemoimmunotherapy targeted towards the endoplasmic reticulum (ER) presents an opportunity to amplify the synergistic effects of chemotherapy and immunotherapy. In this study, we initially validated celastrol (CEL) as an inducer of immunogenic cell death (ICD) by promoting ER stress and autophagy in colorectal cancer (CRC) cells. Subsequently, an ER-targeted strategy was posited, involving the codelivery of CEL with PD-L1 small interfering RNAs (siRNA) using KDEL peptide-modified exosomes derived from milk (KME), to enhance chemoimmunotherapy outcomes. Our findings demonstrate the efficient transportation of KME to the ER <em>via</em> the Golgi-to-ER pathway. Compared to their non-targeting counterparts, KME exhibited a significant augmentation of the CEL-induced ICD effect. Additionally, it facilitated the release of danger signaling molecules (DAMPs), thereby stimulating the antigen-presenting function of dendritic cells and promoting the infiltration of T cells into the tumor. Concurrently, the ER-targeted delivery of PD-L1 siRNA resulted in the downregulation of both intracellular and membrane PD-L1 protein expression, consequently fostering the proliferation and activity of CD8<sup>+</sup> T cells. Ultimately, the ER-targeted formulation exhibited enhanced anti-tumor efficacy and provoked anti-tumor immune responses against orthotopic colorectal tumors <em>in vivo</em>. Collectively, a robust ER-targeted delivery strategy provides an encouraging approach for achieving potent cancer chemoimmunotherapy.</p></div>","PeriodicalId":6906,"journal":{"name":"Acta Pharmaceutica Sinica. B","volume":null,"pages":null},"PeriodicalIF":14.7,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2211383524001394/pdfft?md5=43664af8e2a3f8afd1bb04aa4797e0a5&pid=1-s2.0-S2211383524001394-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140769880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Functional characterization, structural basis, and protein engineering of a rare flavonoid 2′-O-glycosyltransferase from Scutellaria baicalensis 黄芩中一种罕见黄酮类化合物 2′-O-糖基转移酶的功能表征、结构基础和蛋白质工程学研究
IF 14.7 1区 医学
Acta Pharmaceutica Sinica. B Pub Date : 2024-08-01 DOI: 10.1016/j.apsb.2024.04.001
{"title":"Functional characterization, structural basis, and protein engineering of a rare flavonoid 2′-O-glycosyltransferase from Scutellaria baicalensis","authors":"","doi":"10.1016/j.apsb.2024.04.001","DOIUrl":"10.1016/j.apsb.2024.04.001","url":null,"abstract":"<div><p>Glycosylation is an important post-modification reaction in plant secondary metabolism, and contributes to structural diversity of bioactive natural products. In plants, glycosylation is usually catalyzed by UDP-glycosyltransferases. Flavonoid 2′-<em>O</em>-glycosides are rare glycosides. However, no UGTs have been reported, thus far, to specifically catalyze 2′-<em>O</em>-glycosylation of flavonoids. In this work, UGT71AP2 was identified from the medicinal plant <em>Scutellaria baicalensis</em> as the first flavonoid 2′-<em>O</em>-glycosyltransferase. It could preferentially transfer a glycosyl moiety to 2′-hydroxy of at least nine flavonoids to yield six new compounds. Some of the 2′-<em>O</em>-glycosides showed noticeable inhibitory activities against cyclooxygenase 2. The crystal structure of UGT71AP2 (2.15 Å) was solved, and mechanisms of its regio-selectivity was interpreted by p<em>K</em><sub>a</sub> calculations, molecular docking, MD simulation, MM/GBSA binding free energy, QM/MM, and hydrogen‒deuterium exchange mass spectrometry analysis. Through structure-guided rational design, we obtained the L138T/V179D/M180T mutant with remarkably enhanced regio-selectivity (the ratio of 7-<em>O</em>-glycosylation byproducts decreased from 48% to 4%) and catalytic efficiency of 2′-<em>O</em>-glycosylation (<em>k</em><sub>cat</sub>/<em>K</em><sub>m</sub>, 0.23 L/(s·μmol), 12-fold higher than the native). Moreover, UGT71AP2 also possesses moderate UDP-dependent de-glycosylation activity, and is a dual function glycosyltransferase. This work provides an efficient biocatalyst and sets a good example for protein engineering to optimize enzyme catalytic features through rational design.</p></div>","PeriodicalId":6906,"journal":{"name":"Acta Pharmaceutica Sinica. B","volume":null,"pages":null},"PeriodicalIF":14.7,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2211383524001291/pdfft?md5=7a8a1e5c48c8fcb596d744fd4b086287&pid=1-s2.0-S2211383524001291-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140589047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Small molecule α-methylene-γ-butyrolactone, an evolutionarily conserved moiety in sesquiterpene lactones, ameliorates arthritic phenotype via interference DNA binding activity of NF-κB 小分子α-亚甲基-γ-丁内酯是倍半萜内酯中的一个进化保守分子,可通过干扰 NF-κB 的 DNA 结合活性改善关节炎表型
IF 14.7 1区 医学
Acta Pharmaceutica Sinica. B Pub Date : 2024-08-01 DOI: 10.1016/j.apsb.2024.04.004
{"title":"Small molecule α-methylene-γ-butyrolactone, an evolutionarily conserved moiety in sesquiterpene lactones, ameliorates arthritic phenotype via interference DNA binding activity of NF-κB","authors":"","doi":"10.1016/j.apsb.2024.04.004","DOIUrl":"10.1016/j.apsb.2024.04.004","url":null,"abstract":"<div><p>Rheumatoid arthritis (RA) is an inflammatory disease accompanied by abnormal synovial microenvironment (SM). Sesquiterpene lactones (SLs) are the main anti-inflammatory ingredients of many traditional herbs utilized in RA treatment. <em>α</em>-Methylene-<em>γ</em>-butyrolactone (<em>α</em>-M-<em>γ</em>-B) is a core moiety that widely exists in natural SLs. This study was designed to investigate the anti-arthritic potential of <em>α</em>-M-<em>γ</em>-B as an independent small molecule <em>in vitro</em> and <em>in vivo</em>. <em>α</em>-M-<em>γ</em>-B exhibited stronger electrophilicity and anti-inflammatory effects than the other six analogs. <em>α</em>-M-<em>γ</em>-B inhibited the production of pro-inflammatory mediators <em>via</em> repolarizing M1 macrophages into M2 macrophages. The transcriptome sequencing suggested that <em>α</em>-M-<em>γ</em>-B regulated the immune system pathway. Consistently, <em>α</em>-M-<em>γ</em>-B attenuated collagen type II-induced arthritic (CIA) phenotype, restored the balance of Tregs-macrophages and remodeled SM <em>via</em> repolarizing the synovial-associated macrophages in CIA mice. Mechanistically, although <em>α</em>-M-<em>γ</em>-B did not prevent the trans-nucleus of NF-<em>κ</em>B it interfered with the DNA binding activity of NF-<em>κ</em>B <em>via</em> direct interaction with the sulfhydryl in cysteine residue of NF-<em>κ</em>B p65, which blocked the activation of NF-<em>κ</em>B. Inhibition of NF-<em>κ</em>B reduced the M1 polarization of macrophage and suppressed the synovial hyperplasia and angiogenesis. <em>α</em>-M-<em>γ</em>-B failed to ameliorate CIA in the presence of <em>N</em>-acetylcysteine or when the mice were subjected to the macrophage-specific deficiency of <em>Rela</em>. In conclusion, <em>α</em>-M-<em>γ</em>-B significantly attenuated the CIA phenotype by directly targeting NF-<em>κ</em>B p65 and inhibiting its DNA binding ability. These results suggest that <em>α</em>-M-<em>γ</em>-B has the potential to serve as an alternative candidate for treating RA. The greater electrophilicity of <em>α</em>-M-<em>γ</em>-B, the basis for triggering strong anti-inflammatory activity, accounts for the reason why <em>α</em>-M-<em>γ</em>-B is evolutionarily conserved in the SLs by medical plants.</p></div>","PeriodicalId":6906,"journal":{"name":"Acta Pharmaceutica Sinica. B","volume":null,"pages":null},"PeriodicalIF":14.7,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2211383524001321/pdfft?md5=8f8b8f0fb27d11def58e396ce288b705&pid=1-s2.0-S2211383524001321-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140613665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
SOX17-mediated immune evasion in early colorectal cancer: From pre-malignant adaptation to tumor progression 早期结直肠癌中 SOX17 介导的免疫逃避:从恶性前适应到肿瘤进展
IF 14.7 1区 医学
Acta Pharmaceutica Sinica. B Pub Date : 2024-08-01 DOI: 10.1016/j.apsb.2024.05.021
{"title":"SOX17-mediated immune evasion in early colorectal cancer: From pre-malignant adaptation to tumor progression","authors":"","doi":"10.1016/j.apsb.2024.05.021","DOIUrl":"10.1016/j.apsb.2024.05.021","url":null,"abstract":"","PeriodicalId":6906,"journal":{"name":"Acta Pharmaceutica Sinica. B","volume":null,"pages":null},"PeriodicalIF":14.7,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2211383524001990/pdfft?md5=12d9a97b077ac3db4e4645ea4d474f0b&pid=1-s2.0-S2211383524001990-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141528598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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