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Wen T, Liu T, Chen H, Liu Q, Shen X, Hu Q. Demethylzeylasteral alleviates inflammation and colitis via dual suppression of NF-κB and STAT3/5 by targeting IKKα/β and JAK2. Int Immunopharmacol 2024; 142:113260. [PMID: 39340986 DOI: 10.1016/j.intimp.2024.113260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2024] [Revised: 09/23/2024] [Accepted: 09/23/2024] [Indexed: 09/30/2024]
Abstract
BACKGROUND Ulcerative colitis (UC) is a common inflammatory bowel disease and a risk factor of colorectal cancer. Demethylzeylasteral (DZT), a bioactive component mainly isolated from Tripterygium wilfordii, has been shown to inhibit inflammation and cancer. However, its anti-UC function and molecular mechanisms have not been well characterized. This study aims to explore the therapeutic effect and functional targets of demethylzeylasteral against UC. METHODS RT-qPCR, Western blot and ELISA were used to detect the generation of pro-inflammatory cytokines and chemokines in murine macrophage cells. Luciferase reporter gene, Western blot, pull-down, CETSA, DARTS, and virtual docking were employed to detect the anti-inflammatory targets and molecular mechanisms of demethylzeylasteral. The anti-inflammatory and anti-colitis effects of demethylzeylasteral were further determined in DSS-challenged mice. RESULTS In vitro, demethylzeylasteral inhibited NO and PGE2 production by suppressing the mRNA and protein expression of iNOS and COX-2, and suppressed the mRNA expression of TNF-α, IL-1β, IL-6, MCP-1, CXCL9, and CXCL10 in RAW264.7 macrophages stimulated by LPS/IFNγ. Furthermore, demethylzeylasteral was not only capable of inhibiting IKKα/β-NF-κB activation, but also able to block JAKs-STAT3/5 activation in LPS/INFγ-incubated RAW264.7 cells or DSS-exposed colon tissues of mice. Mechanistically, demethylzeylasteral was found to directly bind to IKKα/β and JAK2 kinases, leading to inactivation of pro-inflammatory signaling cascades and reduced generation of cytokines and chemokines. In vivo, oral administration of demethylzeylasteral significantly attenuated DSS-induced colitis, which was mainly manifested as mitigated symptoms of colitis, colonic mucosal barrier damage, and colonic inflammation. CONCLUSION We demonstrated that demethylzeylasteral alleviated UC pathology by blocking NF-κB and STAT3/5 pathways via targeting IKKα/β and JAK2 kinases, raising the possibility that demethylzeylasteral could act as a candidate for the treatment of UC.
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Affiliation(s)
- Tian Wen
- Department of Laboratory Medicine, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu 610072, China; College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China; TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu 610072, China
| | - Ting Liu
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu 610072, China
| | - Hongqing Chen
- Department of Laboratory Medicine, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu 610072, China; College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Qi Liu
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75235, USA
| | - Xiaofei Shen
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu 610072, China.
| | - Qiongying Hu
- Department of Laboratory Medicine, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu 610072, China; College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China; TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu 610072, China.
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Zheng X, Luo H, Li J, Yang Z, Zhuan X, Li X, Chen Y, Huo S, Zhou X. Zinc-doped bioactive glass-functionalized polyetheretherketone to enhance the biological response in bone regeneration. J Biomed Mater Res A 2024; 112:1565-1577. [PMID: 38514993 DOI: 10.1002/jbm.a.37710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 02/28/2024] [Accepted: 03/11/2024] [Indexed: 03/23/2024]
Abstract
Polyether ether ketone (PEEK) is gaining recognition as a highly promising polymer for orthopedic implants, attributed to its exceptional biocompatibility, ease of processing, and radiation resistance. However, its long-term in vivo application faces challenges, primarily due to suboptimal osseointegration from postimplantation inflammation and immune reactions. Consequently, biofunctionalization of PEEK implant surfaces emerges as a strategic approach to enhance osseointegration and increase the overall success rates of these implants. In our research, we engineered a multifaceted PEEK implant through the in situ integration of chitosan-coated zinc-doped bioactive glass nanoparticles (Zn-BGNs). This novel fabrication imbues the implant with immunomodulatory capabilities while bolstering its osseointegration potential. The biofunctionalized PEEK composite elicited several advantageous responses; it facilitated M2 macrophage polarization, curtailed the production of inflammatory mediators, and augmented the osteogenic differentiation of bone marrow mesenchymal stem cells. The experimental findings underscore the vital and intricate role of biofunctionalized PEEK implants in preserving normal bone immunity and metabolism. This study posits that utilizing chitosan-BGNs represents a direct and effective method for creating multifunctional implants. These implants are designed to facilitate biomineralization and immunomodulation, making them especially apt for orthopedic applications.
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Affiliation(s)
- Xiaoyu Zheng
- Guangdong Medical University, Zhanjiang, China
- The Spine Department, Orthopaedic Center, Guangdong Second Provincial General Hospital, Zhanjiang, China
| | - Han Luo
- Guangdong Medical University, Zhanjiang, China
- The Spine Department, Orthopaedic Center, Guangdong Second Provincial General Hospital, Zhanjiang, China
| | - Jingzhi Li
- Guangdong Medical University, Zhanjiang, China
- The Spine Department, Orthopaedic Center, Guangdong Second Provincial General Hospital, Zhanjiang, China
| | - Zhenyu Yang
- The Spine Department, Orthopaedic Center, Guangdong Second Provincial General Hospital, Zhanjiang, China
- Southern Medical University, Guangzhou, China
| | - Xiaoquan Zhuan
- Southern Medical University, Guangzhou, China
- The Department of Orthopaedic, Clifford Hospital affiliated to Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xiaoquan Li
- The Spine Department, Orthopaedic Center, Guangdong Second Provincial General Hospital, Zhanjiang, China
| | - Yuting Chen
- The Spine Department, Orthopaedic Center, Guangdong Second Provincial General Hospital, Zhanjiang, China
| | - Shicheng Huo
- Department of Orthopedic Surgery, Spine Center, Changzheng Hospital, Navy Medical University, Shanghai, China
| | - Xiaozhong Zhou
- Guangdong Medical University, Zhanjiang, China
- The Spine Department, Orthopaedic Center, Guangdong Second Provincial General Hospital, Zhanjiang, China
- Southern Medical University, Guangzhou, China
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Zhou L, Zhao T, Zhang R, Chen C, Li J. New insights into the role of macrophages in cancer immunotherapy. Front Immunol 2024; 15:1381225. [PMID: 38605951 PMCID: PMC11007015 DOI: 10.3389/fimmu.2024.1381225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Accepted: 03/18/2024] [Indexed: 04/13/2024] Open
Abstract
Macrophages are the main component of the tumor microenvironment, which are differentiated from monocytes in the blood and play an important role in cancer development. Tumor-associated macrophages (TAMs) can promote tumor growth, invasion, metastasis, and resistance to anti-programmed death receptor 1 therapy by regulating programmed cell death ligand 1 expression and interacting with other immune cells in the tumor microenvironment. However, when activated properly, macrophages can also play an anti-tumor role by enhancing the phagocytosis and cytotoxicity of tumor cells. TAM is associated with poor prognosis and drug resistance in patients treated with immunotherapy, indicating that macrophages are attractive targets for combined therapy in cancer treatment. Combination of targeting TAMs and immunotherapy overcomes the drug resistance and achieved excellent results in some cancers, which may be a promising strategy for cancer treatment in the future. Herein, we review the recent findings on the role of macrophages in tumor development, metastasis, and immunotherapy. We focus mainly on macrophage≥centered therapy, including strategies to deplete and reprogram TAMs, which represent the potential targets for improving tumor immunotherapy efficacy.
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Affiliation(s)
- Li Zhou
- Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
- Research Unit of Respiratory Disease, Central South University, Changsha, Hunan, China
- Diagnosis and Treatment Center of Respiratory Disease, Central South University, Changsha, Hunan, China
- Clinical Medical Research Center for Pulmonary and Critical Care Medicine in Hunan Province, Changsha, China
| | - Tiantian Zhao
- Department of Oncology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Ruzhe Zhang
- Department of Oncology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Chen Chen
- Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Jiwei Li
- Department of Oncology, The Second Xiangya Hospital, Central South University, Changsha, China
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Yuan Z, Jiang D, Yang M, Tao J, Hu X, Yang X, Zeng Y. Emerging Roles of Macrophage Polarization in Osteoarthritis: Mechanisms and Therapeutic Strategies. Orthop Surg 2024; 16:532-550. [PMID: 38296798 PMCID: PMC10925521 DOI: 10.1111/os.13993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 12/12/2023] [Accepted: 12/20/2023] [Indexed: 02/02/2024] Open
Abstract
Osteoarthritis (OA) is the most common chronic degenerative joint disease in middle-aged and elderly people, characterized by joint pain and dysfunction. Macrophages are key players in OA pathology, and their activation state has been studied extensively. Various studies have suggested that macrophages might respond to stimuli in their microenvironment by changing their phenotypes to pro-inflammatory or anti-inflammatory phenotypes, which is called macrophage polarization. Macrophages accumulate and become polarized (M1 or M2) in many tissues, such as synovium, adipose tissue, bone marrow, and bone mesenchymal tissues in joints, while resident macrophages as well as other stromal cells, including fibroblasts, chondrocytes, and osteoblasts, form the joint and function as an integrated unit. In this study, we focus exclusively on synovial macrophages, adipose tissue macrophages, and osteoclasts, to investigate their roles in the development of OA. We review recent key findings related to macrophage polarization and OA, including pathogenesis, molecular pathways, and therapeutics. We summarize several signaling pathways in macrophage reprogramming related to OA, including NF-κB, MAPK, TGF-β, JAK/STAT, PI3K/Akt/mTOR, and NLRP3. Of note, despite the increasing availability of treatments for osteoarthritis, like intra-articular injections, surgery, and cellular therapy, the demand for more effective clinical therapies has remained steady. Therefore, we also describe the current prospective therapeutic methods that deem macrophage polarization to be a therapeutic target, including physical stimulus, chemical compounds, and biological molecules, to enhance cartilage repair and alleviate the progression of OA.
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Affiliation(s)
- Zimu Yuan
- West China Medical SchoolSichuan UniversityChengduChina
- West China HospitalSichuan UniversityChengduChina
| | - Decheng Jiang
- West China Medical SchoolSichuan UniversityChengduChina
- West China HospitalSichuan UniversityChengduChina
| | - Mengzhu Yang
- West China Medical SchoolSichuan UniversityChengduChina
- West China HospitalSichuan UniversityChengduChina
| | - Jie Tao
- West China Medical SchoolSichuan UniversityChengduChina
- West China HospitalSichuan UniversityChengduChina
| | - Xin Hu
- Orthopedic Research Institute, Department of OrthopedicsWest China Hospital, Sichuan UniversityChengduChina
| | - Xiao Yang
- National Engineering Research Center for BiomaterialsSichuan UniversityChengduChina
| | - Yi Zeng
- Orthopedic Research Institute, Department of OrthopedicsWest China Hospital, Sichuan UniversityChengduChina
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