BIOMATERIALS
·
2022
·
IF 15.304
Mengqing Xu,Jin Zhang,Yongli Mu,Mohamed Frahat Foda,Heyou Han
Capsaicin is a natural non-toxic small molecular organic substance, which is often used clinically to reduce inflammation and pain. Here, we report an acid-responsive CaCO 3 nanoparticle loaded with capsaicin that can specifically activate TRPV1 channels and trigger tumor calcium ion therapy. The excellent acid responsiveness of calcium carbonate enables it to precisely target the tumor sites. The released capsaicin can specifically activate TRPV1 channel, overloading the intracellular calcium ion concentration and causing cell apoptosis, which provides a new safer and cheaper treatment. We proved that the naturalness and non-toxicity of capsaicin make the CaCO 3 @CAP nanoparticles have excellent biocompatibility, which has good development prospects and clinical application potential.
研究领域:
药理学
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肿瘤学
·
纳米医学
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DOI
PubMed
高影响因子
BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY
·
2023
·
IF 1.6
Zhou Liping,Lao Zishan,Fan Xinsheng,Hao Mengyang,Yang Yubing
This study aimed to investigate the effects of sulfur dioxide (SO2) derivatives on asthma induced by ovalbumin (OVA). Sprague Dawley rats were sensitized to and challenged with OVA and SO2 derivatives (NaHSO3 and Na2SO3, 1:3 M/M) to establish 28-day (short-term) and 42-day (long-term) asthma models. Exposure to SO2 derivatives aggravated asthma and hence, promoted lung injury in OVA-induced asthma. In addition, it upregulated the protein expression of TRPV1 and downregulated the expression of tight junctions (TJs). These changes were dose-dependent and were more pronounced in the presence of a high concentration of SO2 derivatives. In vitro, SO2 derivatives also increased the calcium influx and TRPV1 protein expression, and decreased TJ expression. Besides, no significant difference in the TJ expression was found between the WT and TRPV1−/- mice. The underlying mechanism might be related to regulating the effects of TRPV1 and TJs.
研究领域:
肺科学
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免疫学
·
毒理学
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DOI
PubMed
高影响因子
American Journal of Translational Research
·
2022
·
IF 3.94
Hai Zhu,Yi Wang,Yibo He,Weifeng Yu
Chronic pelvic pain (CPP) and infertility are the common characteristics of endometriosis. Macrophages and related inflammation play important roles in endometriosis pain. TRPV1 and TRPA1 form a heteromeric channel which is related to endometriosis pain. In the present study, the inflammation-mediated macrophage polarization along with TRPV1/TRPA1 heteromers in endometriosis was investigated in vivo and in vitro . Macrophage polarization and TRPV1/TRPA1 heteromers in endometriosis tissue of patients were assayed, and was further investigated in endometriosis mice by co-culturing macrophages derived from mice in different groups with human endometrium cells. Our results indicated that macrophage polarization, as CD86 and CD206 positive macrophages, were accompanied by TRPV1/TRPA1 heteromers in endometriosis tissues of patients with pain. Inflammatory factors in peritoneal lavage fluid and serum of mice were correlated with TRPV1/TRPA1 expression in endometriosis tissues of mice as well as macrophage polarization which tended to be consistent with TRPV1/TRPA1 heteromers in endometriosis tissue. Moreover, macrophage polarization in enterocoelia induced ectopic endometrial cells migration with the increase in TRPV1/TRPA1 heteromers. Our results suggest that endometriosis-induced celiac inflammation might mediate macrophage polarization along with the increase of TRPV1/TRPA1 heteromers, which may play a key role in endometriosis pain.
研究领域:
妇科学
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免疫学
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疼痛研究
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DOI
PubMed
高影响因子
CELLULAR SIGNALLING
·
2020
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IF 3.968
Shichen Xu,Xian Cheng,Liying Wu,Jiangxia Zheng,Xiaowen Wang,Jing Wu,Huixin Yu,Jiandong Bao,Li Zhang
Anaplastic thyroid cancer (ATC) is a rare malignancy and has a poor prognosis due to its aggressive behavior and resistance to treatments. Calcium (Ca 2+ ) serves as a ubiquitous cellular second messenger and influences several tumor behaviors. Therefore, Ca 2+ modulation is expected to be a novel therapeutic target in cancers. However, whether Ca 2+ modulation is effective in ATC therapy remains unknown. In this study, we reported that capsaicin (CAP), a transient receptor potential vanilloid type1 (TRPV1) agonist, inhibited the viability of anaplastic thyroid cancer cells. Capsaicin treatment triggered Ca 2+ influx by TRPV1 activation, resulting in disequilibrium of intracellular calcium homeostasis . The rapidly increased cytosolic Ca 2+ concentration was mirrored in the mitochondria and caused a severe condition of mitochondrial calcium overload in ATC cells. In addition, the disruption of mitochondrial calcium homeostasis caused by capsaicin led to mitochondrial dysfunction in ATC cells, as evidenced by the production of mitochondrial reactive oxygen species (ROS), depolarization of mitochondrial membrane potential (ΔΨm), and opening of mitochondrial permeability transition pore (mPTP). Next, the resulting release of cyt c into the cytosol triggered apoptosome assembly and subsequent caspase activation and apoptosis. It was worth noting that both TRPV1 antagonist (capsazepine) and calcium chelator (BAPTA) could attenuate aberrant Ca 2+ homeostasis, mitochondrial dysfunction and apoptosis induced by capsaicin treatment. Thus, our study demonstrated that capsaicin induced mitochondrial calcium overload and apoptosis in ATC cells through a TRPV1-mediated pathway. The better understanding of the anti-cancer mechanisms of calcium modulation provides a potential target for the ATC therapy.
研究领域:
肿瘤学
·
细胞生物学
·
药理学
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL IMMUNOPHARMACOLOGY
·
2021
·
IF 4.932
Yonglan Ruan,Jinying Ling,Fan Ye,Nuo Cheng,Fei Wu,Zongxiang Tang,Xiaolan Cheng,Hongquan Liu
Background Treatment of chronic inflammatory pain remains a major goal in the clinic. It is thus of prime importance to characterize inherent pathophysiological pathways to design new therapeutic strategies and analgesics for pain management. Paeoniflorin (PF), a monoterpenoid glycoside from Paeonia lactiflora Pallas plants, possesses promising anti-nociceptive property. However, therapeutic effect and underlying mechanism of action of PF on inflammatory pain have not yet been fully elucidated. In this study, we aim to investigate the analgesic effect further and clarify its mechanism of action of PF on complete freund’s adjuvant (CFA)-evoked inflammatory pain. Methods Twenty-four male mice were divided into 3 groups: sham, CFA, and CFA + PF groups (n = 8/group). Mice were treated with normal saline or PF (30 mg/kg) for 11 days. Footpad swelling (n = 8/group), mechanical (n = 8/group) and thermal hypersensitivity (n = 8/group) were measured to evaluate the analgesic effect of PF on CFA-injected mice. At the end of the animal experiment, blood and L4-L6 dorsal root ganglion neurons were collected to assess the therapeutic effect of PF on CFA-induced inflammatory pain. Next, hematoxylin and eosin, quantitative realtime PCR, ELISA, capsaicin and dimethyl succinate induced pain test (n = 8/group), motor coordination test (n = 8/group), tail flicking test (n = 8/group), pyruvate and succinate dehydrogenase assay (n = 6/group), immunohistochemical staining, were performed to clarify the action mechanism of PF on CFA-evoked inflammatory pain. Besides, the effect of PF on TRPV1 was evaluated by whole-cell patch clamp recording on primary neurons (n = 7). Finally, molecular docking further performed to evaluate the binding ability of PF to TRPV1. Results PF significantly relieved inflammatory pain ( P < 0.001 ) and paw edema ( P < 0.001 ) on a complete Freund adjuvant (CFA)-induced peripheral inflammatory pain model. Furthermore, PF inhibited neutrophil infiltration ( P < 0.01 ), IL-1β increase ( P < 0.01 ), and pain-related peptide substance P release ( P < 0.001 ). Intriguingly, CFA-induced succinate aggregation was notably reversed by PF via modulating pyruvate and SDH activity ( P < 0.01 ). In addition, PF dampened the high expression of subsequent succinate receptor SUCNR1 ( P < 0.01 ), HIF-1α ( P < 0.05 ), as well as the activation of NLPR3 inflammasome ( P < 0.05 ) and TRPV1 ( P < 0.05 ). More importantly, both capsaicin and dimethyl succinate supplementation obviously counteracted the pain-relieving effect of PF and TRPV1 ( P < 0.01 or P < 0.001 ). Conclusion Our findings suggest that PF can significantly relieve CFA-induced paw swelling, as well as mechanical and thermal hyperalgesia. PF alleviated inflammatory pain partly through inhibiting the activation of TRPV1 and succinate/SUCNR1-HIF-1α/NLPR3 pathway. Furthermore, we found that PF exerted its analgesic effect without affecting motor coordination and pain-related cold ion-channels. In summary, this study may provide valuable evidence for the potential application of PF as therapeutic strategy for inflammatory pain treatment.
研究领域:
药理学
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疼痛管理
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神经科学
·
炎症
·
分子生物学
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产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry B
·
2023
·
IF 7
Dan Wei,Mingze Zeng,Borui Su,Yusheng Zhang,Kai Wu,Ting Zhou,Chengheng Wu,Jing Sun,Hongsong Fan
As one of the physical stimulus tools to target neuromodulation-related biological entities, mild thermal stimulus has attracted increasing attention in unraveling neural differentiation processing. However, thermal stimulus for neural behavior regulation has been relatively unexplored due to the challenge in finding a good method of exerting thermal stimulus. Considering the distance-dependent temperature preservation efficiency and the native importance of a bioactive matrix, we herein put forward the design of a photothermal hydrogel by immobilizing photothermal dopamine (DA) in hyaluronic acid (HA) chains. Benefitting from the minuscule disaccharide repeat unit size (≈1 nm) of HA used for the DA grafting, and the additional adhesion capacity of the DA for recruiting cells, a uniformly close distance from heating source to cells is realized. Therefore, we successfully established a near-infrared light initiated photothermal stimulus platform, with full bioactivity and high thermal manipulation efficiency. After extensive characterization, we proved that the thermal activation, from matrix to cells, triggered TRPV1 ion channel opening and Ca2+ influx, which finally promoted neural differentiation of bone marrow mesenchymal stem cells (BMSCs). This work broadens the possibilities of polymeric photothermal materials, and is of great significance for remotely manipulating neural and other cellular machinery for stem cell therapeutics in tissue engineering.
研究领域:
组织工程
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干细胞生物学
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神经科学
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生物医学工程
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光热治疗
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF ETHNOPHARMACOLOGY
·
2024
·
IF 4.8
Kaiwen Lin,Zhongtao Wang,Erhao Wang,Xueer Zhang,Xiaofei Liu,Faming Feng,Xiaodan Yu,Guohui Yi,Yan Wang
Ethnopharmacological relevance Galangin, a bioactive compound extracted from Alpinia officinarum Hance (Zingiberaceae), a plant with significant ethnopharmacological importance, has been used for thousands of years as a spice, condiment, and medicinal agent for various conditions, including gastrointestinal disorders. Although there is evidence suggesting its potential to improve gastric ulcers, the molecular mechanisms underlying its anti-ulcer properties are not fully understood. Objective of the Study: This study aimed to investigate the effects of galangin on ethanol-induced acute gastric mucosal injury (AGMI) in mice and elucidate its molecular mechanisms. Materials and methods Sixty BALB/c mice were randomly assigned into two main groups: a normal control group (n = 10) and an ethanol-induced group (n = 50). After establishing the AGMI model in mice using a combination of 40% ethanol and anhydrous ethanol, the ethanol-induced group was further subdivided into five subgroups (n = 10): an omeprazole control group (20 mg/kg), an untreated ethanol group, and three treatment groups receiving high-dose (50 mg/kg) or low-dose (25 mg/kg) galangin or capsazepine (CPZ, 2 mg/kg). The protective effects of galangin were evaluated through mucosal injury indices, hematoxylin and eosin staining, and quantification of inflammatory markers (IL-1β, IL-6, IL-8, and TNF-α). Oxidative stress levels and matrix metalloproteinase activity were measured using specific assay kits. Molecular docking was conducted to assess the binding affinity of galangin to key proteins within the transient receptor potential vanilloid 1 (TRPV1) pathway. Real-time fluorescence quantitative PCR (qPCR) was used to determine mRNA expression levels of TRPV1, calmodulin (CaM), substance P (SP), and CGRP in gastric tissues. Protein expression levels of TRPV1, nerve growth factor (NGF), tropomyosin receptor kinase A (TRKA), transforming growth factor beta (TGF-β), cyclooxygenase-2 (COX-2), and nuclear factor kappa B (NF-κB) were assessed through Western blot analysis. In cellular experiments, Culture of Human Gastric Epithelial Cells (GES-1) were treated with various concentrations of galangin after 7% ethanol induction. Cell proliferation, apoptosis, and migration were evaluated using Hoechst 33258 staining and transwell migration assays. TRPV1 protein expression was detected using immunofluorescence, and the expression levels of Bcl-2, BCL2-Associated X (BAX), and Caspase-3 were quantified by qPCR. Additionally, specific probe kits were used to measure intracellular calcium ions (Ca 2+ ) and mitochondrial membrane potential. Results The findings indicate that galangin significantly improved mucosal pathology by reducing ulcer indices and inflammatory levels, while enhancing superoxide dismutase (SOD) activity and decreasing malondialdehyde (MDA) concentration. Galangin also reduced matrix metalloproteinase-2 (MMP-2), m metalloproteinase-9 (MMP-9) levels, promoting mucosal repair. At the cellular level, galangin decreased intracellular calcium ion concentration and mitigated the decline in mitochondrial membrane potential, enhance the restoration of mucosal cells, increased migration and proliferation, and reduced apoptosis. Molecularly, galangin demonstrated favorable binding to TRPV1, NGF, TRKA, TGF-β, COX-2, and NF-κB, and reversed the elevated expression of these proteins. Additionally, galangin downregulated the mRNA expression of TRPV1, CaM, SP, CGRP, BAX, and Caspase-3 in gastric tissues/cells, while upregulating Bcl-2 mRNA expression. Conclusion Galangin mitigates AGMI by inhibiting the overactivation of the TRPV1 pathway, thereby blocking aberrant signal transduction. This study suggests that galangin has therapeutic potential against ethanol-induced AGMI and may be a viable alternative for the treatment of alcohol-induced gastric mucosal injuries.
研究领域:
药理学
·
胃肠病学
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分子生物学
·
细胞生物学
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产品关联
DOI
PubMed
高影响因子
EUROPEAN JOURNAL OF PAIN
·
2024
·
IF 3.5
Hao-Nan Zheng,Yu-Ru Zhi,Yang-Shuai Su,Jin-Yan Jiang,Hao-Zhou Zhang,Feng Cao,Yun Wang,Yan Chi,Ying Zhang
Background Visceral hypersensitivity is considered the core pathophysiological mechanism that causes abdominal pain in patients with irritable bowel syndrome (IBS). Fungal dysbiosis has been proved to contribute to visceral hypersensitivity in IBS patients. However, the underlying mechanisms for Dectin-1, a major fungal recognition receptor, in visceral hypersensitivity are poorly understood. This study aimed to explore the role of Dectin-1 in visceral hypersensitivity and elucidate the impact of Dectin-1 activity on the function of transient receptor potential vanilloid type 1 (TRPV1). Methods Visceral hypersensitivity model was established by the intracolonic administration of 0.1 mL TNBS (130 μg/mL in 30% ethanol) in the male mice. Fluconazole and nystatin were used as fungicides. Laminarin, a Dectin-1 antagonist and gene knockout ( Clec7a −/− ) mice were used to interrupt the function of Dectin-1. Colorectal distension-electromyogram recording was performed to assess visceral sensitivity. Immunostaining experiment was performed to determine the localization of Dectin-1 in dorsal root ganglion (DRG) neurons. Calcium imaging study was performed to assay TRPV1-mediated calcium influx in acutely dissociated DRG neurons. Results Pretreatment with fungicides, administration of laminarin or genetic deletion of Clec7a alleviated TNBS-induced visceral hypersensitivity in male mice. The expression of Dectin-1 was upregulated in the DRG and colon of TNBS-treated mice. Colocalization of Dectin-1 and TRPV1 was observed in DRG neurons. Importantly, pretreatment with curdlan, a Dectin-1 agonist, increased TRPV1-mediated calcium influx. Conclusions Dectin-1 contributes to visceral hypersensitivity in IBS or in inflammatory bowel disease in remission and activation of Dectin-1 induces TRPV1 sensitization. Significance Statement This work provides direct evidence for the functional regulation of TRPV1 channel by Dectin-1 activity, proposing a new mechanism underlying TRPV1 sensitization. Control of intestinal fungi might be beneficial for the treatment of refractory abdominal pain in patients with IBS or IBD in remission.
研究领域:
胃肠病学
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免疫学
·
疼痛研究
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神经科学
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产品关联
DOI
PubMed
高影响因子
Scientific Reports
·
2024
·Vol. 14
·期 1
·1-13
·
IF 3.8
Zhou Liuyi,Chen Lulu,Li Ting,Wang Lu,Lin Shiqi,Zhao Ye,Wu Sufan,Jin Tingting
Rosacea is a chronic inflammatory skin disease that typically affects the central facial area. Its main clinical symptoms include paroxysmal flushing, telangiectasia, and non-temporary erythema. Cell-free adipose tissue extracts (ATEs) are liquid components extracted from human adipose tissue that contain large amounts of growth factors. Despite the scar-reducing, anti-aging, and wound-healing effects of ATEs, the efficacy of ATEs in rosacea remains unknown. Therefore, the anti-rosacea effects of ATEs were investigated in human cathelicidin peptide (LL-37) induced rosacea mice and capsaicin (CAP)-stimulated HaCaT keratinocytes. In vitro, ATEs significantly reduced TRPV1 expression, intracellular calcium ions influx and the release of inflammatory factors (such as KLK5, IL-6, IL-8 and TNF-α) after intervening in CAP-stimulated cells. The in vivo results revealed that ATEs alleviated rosacea symptoms, such as erythema score, erythema area, transepidermal water loss, abnormal epidermal thickness, mast cell infiltration and telangiectasia upon downregulating TRPV1 and CD31 expression. Moreover, the up-regulated TRPV1 protein expression was also recovered by ATEs administration in vivo and in vitro. Meanwhile, ATEs demonstrated good biocompatibility. In summary, ATEs could be a potential therapeutic agent for rosacea by regulating inflammation and alleviating telangiectasia.
研究领域:
皮肤科
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炎症性疾病
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药理学
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产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2023
·Vol. 14
·期 1
·1-25
·
IF 16.6
Li Ting,Jiang Shuhui,Zhang Ying,Luo Jie,Li Ming,Ke Hengte,Deng Yibin,Yang Tao,Sun Xiaohui,Chen Huabing
The survival of malignant tumors is highly dependent on their intrinsic self-defense pathways such as heat shock protein (HSP) during cancer therapy. However, precisely dismantling self-defenses to amplify antitumor potency remains unexplored. Herein, we demonstrate that nanoparticle-mediated transient receptor potential vanilloid member 1 (TRPV1) channel blockade potentiates thermo-immunotherapy via suppressing heat shock factor 1 (HSF1)-mediated dual self-defense pathways. TRPV1 blockade inhibits hyperthermia-induced calcium influx and subsequent nuclear translocation of HSF1, which selectively suppresses stressfully overexpressed HSP70 for enhancing thermotherapeutic efficacy against a variety of primary, metastatic and recurrent tumor models. Particularly, the suppression of HSF1 translocation further restrains the transforming growth factor β (TGFβ) pathway to degrade the tumor stroma, which improves the infiltration of antitumor therapeutics (e.g. anti-PD-L1 antibody) and immune cells into highly fibrotic and immunosuppressive pancreatic cancers. As a result, TRPV1 blockade retrieves thermo-immunotherapy with tumor-eradicable and immune memory effects. The nanoparticle-mediated TRPV1 blockade represents as an effective approach to dismantle self-defenses for potent cancer therapy.
研究领域:
肿瘤学
·
免疫疗法
·
纳米技术
·
分子生物学
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Dongqin Lei,Jing Xin,Fen Qin,Hongyi Lan,Jing Liu,Sijia Wang,Jing Wang,Weihui Zeng,Cuiping Yao
In photodynamic therapy (PDT), reactive oxygen species (ROS) are key products that induce cell death, and increasing amount of ROS is a crucial way to enhance PDT efficacy. However, the generated ROS stimulates the transient receptor potential vanilloid 1 channel (TRPV1), which can be activated in the pain pathway and then exacerbate pain. Herein, we utilized arginine−glycine−aspartate (RGD) peptide-modified liposomes for encapsulation Chlorin e6 (Ce6) and capsazepine (Cz), a receptor antagonist of TRPV1, to prepare drug-loaded liposomes, RLCC. Soluble hyaluronic acid microneedle arrays (MNs), which possess sufficient skin penetration capability and excellent biosafety, was applied for in situ delivery of RLCC. With the aid of RGD peptides, the efficiency of intracellular liposomal uptake and the dispersion of drugs in tumor after delivery by MNs were significantly enhanced, showcasing tremendous potential for improving the PDT efficacy. Besides, through the analysis of sciatic nerve signals in mice during PDT, RLCC demonstrated remarkable effectiveness in alleviating pain by significantly reducing nerve impulses. Hence, RLCC demonstrated outstanding effectiveness in PDT and effectively alleviated the associated pain. Overall, this research highlights the potential of utilizing MNs for the in situ delivery of RLCC, facilitating effective PDT while addressing the issue of pain during the treatment.
研究领域:
药学
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生物医学工程
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疼痛管理
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癌症治疗
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产品关联
DOI
PubMed
高影响因子
PHYTOMEDICINE
·
2024
·
IF 6.7
Wenjia CHEN,Chu ZHANG,Mingzhu XU,Tao LI,Xin LI,Peihao LI,Xun GONG,Yang QU,Chunling ZHOU,Xia MAO,Na LIN,Wei LIU,Quan JIANG,Haiyu XU,Yanqiong ZHANG
Background : Specific treatment for rheumatoid arthritis (RA) is still an unmet need. Yu-Xue-Bi (YXB) capsule effectively treats RA with blood stasis syndrome (BS). However, its mechanism remains unclear. Purpose : Exploring and elucidating the therapeutic effect and pharmacological mechanism of YXB capsule in treating RA. Methods : This study identified differentially expressed genes (DEGs) in patients with RA and BS compared to healthy controls using clinical transcriptomics data. Clinical symptoms of RA and BS, and the related genes were collected from the SoFDA and HPO databases. Candidate bioactive constituents in YXB were identified via UPLC-QTOF/MS and evaluated using ADMET rules. Putative targets were predicted, and a network linking disease-related DEGs and drug targets was constructed. Key targets were screened utilizing random walk-with-restart (RWR) algorithms and verified through experiments using rat models of collagen-induced arthritis with BS (CIA-BS model) in vivo . Results : We found 1220 DEGs along with 976 clinical symptom-related genes, as RA with BS-related genes. Chemical profiling identified 193 YXB constituents, with 98 meeting optimal ADMET criteria. We predicted 459 putative targets for these constituents. Network calculations screened 209 key targets, 129 RA with BS-related genes and 92 YXB targets involved in immune inflammation, blood stagnation, and hyperalgesia imbalance. Notably, the SUCNR1/HIF-1α/TRPV1 axis was enriched by YXB targets against RA with BS. Experimentally, YXB inhibited inflamed joint deterioration, including synovial inflammation, cartilage damage and bone erosion, relieving mechanical and cold allodynia hyperglasia. It reversed hemorrheology and vascular function in CIA-BS rats, restoring SDHB and eNOS expression, preventing SDHA, SUCNR1 and HIF-1α activation, reducing SUCN, TNF-1α and IL-1β production, and TRPV1 and TRPA1 expression. Conclusion : Our data support YXB's therapeutic effects on aggressive RA-BS by modulating the SUCNR1/HIF-1α/TRPV1 axis.
研究领域:
药理学
·
分子生物学
·
风湿病学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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