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Wan P, Zhong L, Yu L, Shen C, Shao X, Chen S, Zhou Z, Wang M, Zhang H, Liu B. Lysosome-related genes predict acute myeloid leukemia prognosis and response to immunotherapy. Front Immunol 2024; 15:1384633. [PMID: 38799454 PMCID: PMC11117069 DOI: 10.3389/fimmu.2024.1384633] [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: 02/10/2024] [Accepted: 04/24/2024] [Indexed: 05/29/2024] Open
Abstract
Background Acute myeloid leukemia (AML) is a highly aggressive and pathogenic hematologic malignancy with consistently high mortality. Lysosomes are organelles involved in cell growth and metabolism that fuse to form specialized Auer rods in AML, and their role in AML has not been elucidated. This study aimed to identify AML subtypes centered on lysosome-related genes and to construct a prognostic model to guide individualized treatment of AML. Methods Gene expression data and clinical data from AML patients were downloaded from two high-throughput sequencing platforms. The 191 lysosomal signature genes were obtained from the database MsigDB. Lysosomal clusters were identified by unsupervised consensus clustering. The differences in molecular expression, biological processes, and the immune microenvironment among lysosomal clusters were subsequently analyzed. Based on the molecular expression differences between lysosomal clusters, lysosomal-related genes affecting AML prognosis were screened by univariate cox regression and multivariate cox regression analyses. Algorithms for LASSO regression analyses were employed to construct prognostic models. The risk factor distribution, KM survival curve, was applied to evaluate the survival distribution of the model. Time-dependent ROC curves, nomograms and calibration curves were used to evaluate the predictive performance of the prognostic models. TIDE scores and drug sensitivity analyses were used to explore the implication of the model for AML treatment. Results Our study identified two lysosomal clusters, cluster1 has longer survival time and stronger immune infiltration compared to cluster2. The differences in biological processes between the two lysosomal clusters are mainly manifested in the lysosomes, vesicles, immune cell function, and apoptosis. The prognostic model consisting of six prognosis-related genes was constructed. The prognostic model showed good predictive performance in all three data sets. Patients in the low-risk group survived significantly longer than those in the high-risk group and had higher immune infiltration and stronger response to immunotherapy. Patients in the high-risk group showed greater sensitivity to cytarabine, imatinib, and bortezomib, but lower sensitivity to ATRA compared to low -risk patients. Conclusion Our prognostic model based on lysosome-related genes can effectively predict the prognosis of AML patients and provide reference evidence for individualized immunotherapy and pharmacological chemotherapy for AML.
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MESH Headings
- Humans
- Leukemia, Myeloid, Acute/genetics
- Leukemia, Myeloid, Acute/therapy
- Leukemia, Myeloid, Acute/immunology
- Leukemia, Myeloid, Acute/diagnosis
- Lysosomes/metabolism
- Prognosis
- Female
- Male
- Immunotherapy/methods
- Biomarkers, Tumor/genetics
- Middle Aged
- Gene Expression Profiling
- Adult
- Nomograms
- Tumor Microenvironment/genetics
- Tumor Microenvironment/immunology
- Aged
- Gene Expression Regulation, Leukemic
- Transcriptome
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Affiliation(s)
- Peng Wan
- Central Laboratory of Yongchuan Hospital, Chongqing Medical University, Chongqing, China
| | - Liang Zhong
- Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Lihua Yu
- Clinical Laboratory of Yongchuan Hospital, Chongqing Medical University, Chongqing, China
| | - Chenlan Shen
- Central Laboratory of Yongchuan Hospital, Chongqing Medical University, Chongqing, China
| | - Xin Shao
- Central Laboratory of Yongchuan Hospital, Chongqing Medical University, Chongqing, China
| | - Shuyu Chen
- Central Laboratory of Yongchuan Hospital, Chongqing Medical University, Chongqing, China
| | - Ziwei Zhou
- Central Laboratory of Yongchuan Hospital, Chongqing Medical University, Chongqing, China
| | - Meng Wang
- Central Laboratory of Yongchuan Hospital, Chongqing Medical University, Chongqing, China
| | - Hongyan Zhang
- Central Laboratory of Yongchuan Hospital, Chongqing Medical University, Chongqing, China
| | - Beizhong Liu
- Central Laboratory of Yongchuan Hospital, Chongqing Medical University, Chongqing, China
- Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, China
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Guo Y, Wei Y, Liu C, Li H, Du X, Meng J, Liu J, Li Q. Elucidation of antioxidant activities of intracellular and extracellular polysaccharides from Cordyceps militaris in vitro and their protective effects on ulcerative colitis in vivo. Int J Biol Macromol 2024; 267:131385. [PMID: 38582477 DOI: 10.1016/j.ijbiomac.2024.131385] [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: 01/29/2024] [Revised: 03/14/2024] [Accepted: 04/03/2024] [Indexed: 04/08/2024]
Abstract
In this study, we extracted the polysaccharides from C. militaris fruiting bodies (CFIPs), mycelial intracellular polysaccharides (CMIPs), and fermentation broth extracellular polysaccharides (CFEPs) to investigate their physicochemical properties, antioxidant capacities, and effects on oxazolone-induced zebrafish ulcerative colitis (UC). Our results revealed differences in monosaccharide composition and surface structure among CFIPs, CMIPs, and CFEPs. The molar ratios of glucose to mannose in CFIPs, glucose to xylose in CMIPs, and xylose to glucose in CFEPs were 7.57: 1.6, 7.26: 1.81, and 5.44: 2.98 respectively. Moreover, CFEPs exhibited significantly (p < 0.05) higher chemical antioxidant capacity compared to CMIPs and CFIPs. Surprisingly, CFEP treatment didn't show a significant effect in protecting against H2O2-induced oxidative damage in RAW 264.7 cells. After 3 d of treatment, the levels of ROS, MDA, and MPO in the CFIPs group exhibited a significant (p < 0.05) reduction by 37.82 %, 68.15 %, and 22.77 % respectively. Additionally, the ACP and AKP increased by 60.33 % and 96.99 %. Additionally, C. militaris polysaccharides (CMPs) were found to effectively improve UC by activating the MyD88/NF-κB signaling pathway in vivo. These findings confirm the distinct physicochemical properties of these three types of CMP and their potential for development into antioxidant-rich anti-inflammatory health foods.
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Affiliation(s)
- Yangbian Guo
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong, China; Shanxi Key Laboratory of Edible Fungi for Loess Plateau, Taiyuan, China
| | - Yin Wei
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong, China; Shanxi Key Laboratory of Edible Fungi for Loess Plateau, Taiyuan, China
| | - Chang Liu
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong, China; Shanxi Key Laboratory of Edible Fungi for Loess Plateau, Taiyuan, China
| | - Hao Li
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong, China; Shanxi Key Laboratory of Edible Fungi for Loess Plateau, Taiyuan, China
| | - Xiao Du
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong, China; Shanxi Key Laboratory of Edible Fungi for Loess Plateau, Taiyuan, China
| | - Junlong Meng
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong, China; Collaborative Innovation Center of Quality and Efficiency of Loess Plateau Edible Fungi, Jinzhong, China
| | - Jingyu Liu
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong, China; Shanxi Key Laboratory of Edible Fungi for Loess Plateau, Taiyuan, China; Collaborative Innovation Center of Quality and Efficiency of Loess Plateau Edible Fungi, Jinzhong, China.
| | - Qi Li
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong, China; Collaborative Innovation Center of Quality and Efficiency of Loess Plateau Edible Fungi, Jinzhong, China.
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Fan J, Zhu J, Zhu H, Zhang Y, Xu H. Potential therapeutic target for polysaccharide inhibition of colon cancer progression. Front Med (Lausanne) 2024; 10:1325491. [PMID: 38264044 PMCID: PMC10804854 DOI: 10.3389/fmed.2023.1325491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Accepted: 12/21/2023] [Indexed: 01/25/2024] Open
Abstract
In recent years, colon cancer has become one of the most common malignant tumors worldwide, posing a great threat to human health. Studies have shown that natural polysaccharides have rich biological activities and medicinal value, such as anti-inflammatory, anti-cancer, anti-oxidation, and immune-enhancing effects, especially with potential anti-colon cancer mechanisms. Natural polysaccharides can not only protect and enhance the homeostasis of the intestinal environment but also exert a direct inhibition effect on cancer cells, making it a promising strategy for treating colon cancer. Preliminary clinical experiments have demonstrated that oral administration of low and high doses of citrus pectin polysaccharides can reduce tumor volume in mice by 38% (p < 0.02) and 70% (p < 0.001), respectively. These results are encouraging. However, there are relatively few clinical studies on the effectiveness of polysaccharide therapy for colon cancer, and ensuring the effective bioavailability of polysaccharides in the body remains a challenge. In this article, we elucidate the impact of the physicochemical factors of polysaccharides on their anticancer effects and then reveal the anti-tumor effects and mechanisms of natural polysaccharides on colon cancer. Finally, we emphasize the challenges of using polysaccharides in the treatment of colon cancer and discuss future applications.
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Affiliation(s)
- Jiawei Fan
- Department of Gastroenterology, The First Hospital of Jilin University, Changchun, China
| | - Jianshu Zhu
- Department of Spine Surgery, The First Hospital of Jilin University, Changchun, China
| | - He Zhu
- Department of Gastroenterology, The First Hospital of Jilin University, Changchun, China
| | - Yinmeng Zhang
- Department of Gastroenterology, The First Hospital of Jilin University, Changchun, China
| | - Hong Xu
- Department of Gastroenterology, The First Hospital of Jilin University, Changchun, China
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Zhang L, Yan M, Liu C. A comprehensive review of secondary metabolites from the genus Agrocybe: Biological activities and pharmacological implications. Mycology 2023; 15:162-179. [PMID: 38813473 PMCID: PMC11132692 DOI: 10.1080/21501203.2023.2292994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 12/06/2023] [Indexed: 05/31/2024] Open
Abstract
The genus Agrocybe, situated within the Strophariaceae family, class Agaricomycetes, and phylum Basidiomycota, encompasses a myriad of species exhibiting significant biological activities. This review presents an integrative overview of the secondary metabolites derived from Agrocybe species, elucidating their respective biological activities and potential pharmacological applications. The metabolites under scrutiny encompass a diverse array of biological macromolecules, specifically polysaccharides and lectins, as well as a diverse group of 80 documented small molecular chemical constituents, classified into sterols, sesquiterpenes, volatile compounds, polyenes, and other compounds, their manifesting anti-inflammatory, anticancer, antioxidant, hepatoprotective, antimicrobial, and antidiabetic activities, these metabolites, in which polysaccharides exhibit abundant activities, underscore the potential of the Agrocybe genus as a valuable source of biologically active natural products. The present review emphasises the need for escalated research into Agrocybe, including investigations into the biosynthetic pathways of these metabolites, which could foster the development of novel pharmaceutical therapies to address various health challenges.
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Affiliation(s)
- Liqiu Zhang
- Key Laboratory for Enzyme and Enzyme-like Material Engineering of Heilongjiang, College of Life Science, Northeast Forestry University, Harbin, China
| | - Meixia Yan
- Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Chengwei Liu
- Key Laboratory for Enzyme and Enzyme-like Material Engineering of Heilongjiang, College of Life Science, Northeast Forestry University, Harbin, China
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