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Huang M, Luo J, Ji X, Hu M, Xue Y, Liu Q. Deficiency of tumor-expressed B7-H3 augments anti-tumor efficacy of anti-PD-L1 monotherapy rather than the combined chemoimmunotherapy in ovarian cancer. Pharmacol Res 2022; 186:106512. [DOI: 10.1016/j.phrs.2022.106512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 10/12/2022] [Accepted: 10/12/2022] [Indexed: 11/27/2022]
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Wang Y, Shen X, Wang Q, Guo Z, Hu L, Dong Z, Hu W. Non-canonical Small GTPase RBJ Promotes NSCLC Progression Through the Canonical MEK/ERK Signaling Pathway. Curr Pharm Des 2022; 28:3446-3455. [PMID: 36397632 DOI: 10.2174/1381612829666221117124048] [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: 05/25/2022] [Revised: 09/26/2022] [Accepted: 10/14/2022] [Indexed: 11/21/2022]
Abstract
BACKGROUND Although the majority of members belonging to the small GTPase Ras superfamily have been studied in several malignancies, the function of RBJ has remained unclear, particularly in non-small cell lung cancer (NSCLC). OBJECTIVE The research aims to determine the function of RBJ in NSCLC. METHODS The levels of RBJ protein in tumor tissue and para-carcinoma normal tissue were ascertained via immunohistochemistry (IHC). The growth, migration, and invasion of NSCLC cells were assessed by 5- ethynyl-2-deoxyuridine (EdU) assay, colony formation, cell counting kit-8 (CCK8), transwell and wound healing assays. Furthermore, a nude mouse xenograft model was established to study the function of RBJ in tumorigenesis in vivo. RESULTS The IHC analysis revealed that the protein levels of RBJ were notably increased in tumor tissue and positively associated with the clinical stage. In addition, the knockdown of RBJ restrained the growth, invasion, and migration of NSCLC cell lines by inhibiting the epithelial-mesenchymal transition (EMT) through the MEK/ERK signaling pathway. Accordingly, opposite results were observed when RBJ was overexpressed. In addition, the overexpression of RBJ accelerated tumor formation by A549 cells in nude mice. CONCLUSION RBJ promoted cancer progression in NSCLC by activating EMT via the MEK/ERK signaling. Thus, RBJ could be used as a potential therapeutic against NSCLC.
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Affiliation(s)
- Yujin Wang
- Department of Thoracic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China.,Hubei Key Laboratory of Tumor Biological Behaviors & Hubei Cancer Clinical Study Center, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Xiaoyan Shen
- Department of Cardiothoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Qingwen Wang
- Department of Thoracic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China.,Hubei Key Laboratory of Tumor Biological Behaviors & Hubei Cancer Clinical Study Center, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Zixin Guo
- Department of Thoracic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China.,Hubei Key Laboratory of Tumor Biological Behaviors & Hubei Cancer Clinical Study Center, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Liwen Hu
- Department of Thoracic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China.,Hubei Key Laboratory of Tumor Biological Behaviors & Hubei Cancer Clinical Study Center, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Zhe Dong
- Department of Cardiovascular Surgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Weidong Hu
- Department of Thoracic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China.,Hubei Key Laboratory of Tumor Biological Behaviors & Hubei Cancer Clinical Study Center, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
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Bräutigam K, Kabore-Wolff E, Hussain AF, Polack S, Rody A, Hanker L, Köster F. Inhibitors of PD-1/PD-L1 and ERK1/2 impede the proliferation of receptor positive and triple-negative breast cancer cell lines. J Cancer Res Clin Oncol 2021; 147:2923-2933. [PMID: 34185141 PMCID: PMC8397671 DOI: 10.1007/s00432-021-03694-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 06/10/2021] [Indexed: 12/31/2022]
Abstract
PURPOSE Triple-negative breast cancer (TNBC) is characterized by an unfavorable prognosis and missing systemic therapeutic approaches beside chemotherapy. Targeting the immune checkpoint PD-1/PD-L1 showed promising results in breast cancer and especially in TNBC. The extracellular signal-regulated kinase 1/2 (ERK1/2) is an important driver of carcinogenesis. Here, the effect of combined PD-1/PD-L1 and ERK1/2 inhibitor treatment is investigated of cell growth and intracellular impact of breast cancer cell lines. METHODS The IC50 values of each inhibitor and the effect of combined treatment were determined in three TNBC cell lines of different subtypes and one non-TNBC cell line. Phospho-specific antibodies were used in western blot analyses to investigate an effect on ERK1/2 activation. Expressions of immune modulatory and cell cycle-associated genes were examined by quantitative reverse transcription PCR. RESULTS Both inhibitors PD-1/PD-L1 and ERK1/2 impeded the proliferation of TNBC to a higher extent than of non-TNBC. By combined treatment, cell lines were inhibited either synergistically or additively. ERK1/2 and S6 phosphorylation were reduced and expressions of c-Fos and FosL were diminished after ERK1/2 inhibitor as single and combined treatment. Between genes involved in immune modulation, IL-8 was upregulated in TNBC cells after combined treatment. CONCLUSION In conclusion, combination of PD-1/PD-L1 and ERK1/2 inhibitors showed favorable effects for a new therapy strategy, with better results in TNBC cell lines than in non-TNBC cells. The effects have to be validated in models that can reflect the interaction between immune and tumor cells like the situation in the tumor micro-environment.
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Affiliation(s)
- Karen Bräutigam
- Department of Gynecology and Obstetrics, University Medical Center Schleswig-Holstein, Campus Lübeck, Lübeck, Germany.
| | - Elodie Kabore-Wolff
- Department of Gynecology and Obstetrics, University Medical Center Schleswig-Holstein, Campus Lübeck, Lübeck, Germany
| | - Ahmad Fawzi Hussain
- Department of Gynecology and Obstetrics, Medical Faculty, Justus-Liebig-University Giessen, Giessen, Germany
| | - Stephan Polack
- Department of Gynecology and Obstetrics, University Medical Center Schleswig-Holstein, Campus Lübeck, Lübeck, Germany
| | - Achim Rody
- Department of Gynecology and Obstetrics, University Medical Center Schleswig-Holstein, Campus Lübeck, Lübeck, Germany
| | - Lars Hanker
- Department of Gynecology and Obstetrics, University Medical Center Schleswig-Holstein, Campus Lübeck, Lübeck, Germany
| | - Frank Köster
- Department of Gynecology and Obstetrics, University Medical Center Schleswig-Holstein, Campus Lübeck, Lübeck, Germany
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Diane A, Abunada H, Khattab N, Moin ASM, Butler AE, Dehbi M. Role of the DNAJ/HSP40 family in the pathogenesis of insulin resistance and type 2 diabetes. Ageing Res Rev 2021; 67:101313. [PMID: 33676026 DOI: 10.1016/j.arr.2021.101313] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 02/22/2021] [Accepted: 02/28/2021] [Indexed: 12/13/2022]
Abstract
Insulin resistance (IR) underpins a wide range of metabolic disorders including type 2 diabetes (T2D), metabolic syndrome and cardiovascular diseases. IR is characterized by a marked reduction in the magnitude and/or delayed onset of insulin to stimulate glucose disposal. This condition is due to defects in one or several intracellular intermediates of the insulin signaling cascade, ranging from insulin receptor substrate (IRS) inactivation to reduced glucose phosphorylation and oxidation. Genetic predisposition, as well as other precipitating factors such as aging, obesity, and sedentary lifestyles are among the risk factors underlying the pathogenesis of IR and its subsequent progression to T2D. One of the cardinal hallmarks of T2D is the impairment of the heat shock response (HSR). Human and animal studies provided compelling evidence of reduced expression of several components of the HSR (i.e. Heat shock proteins or HSPs) in diabetic samples in a manner that correlates with the degree of IR. Interventions that induce the HSR, irrespective of the means to achieve it, proved their effectiveness in enhancing insulin sensitivity and improving glycemic index. However, most of these studies have been focused on HSP70 family. In this review, we will focus on the novel role of DNAJ/HSP40 cochaperone family in metabolic diseases associated with IR.
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Zhang Z, Huang X, Wang E, Huang Y, Yang R. Identification and characterization of B220 +/B220 - subpopulations in murine Gr1 +CD11b + cells during tumorigenesis. Oncoimmunology 2021; 10:1912472. [PMID: 33948392 PMCID: PMC8057082 DOI: 10.1080/2162402x.2021.1912472] [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] [Indexed: 10/27/2022] Open
Abstract
Although all murine MDSCs are defined as Gr1+CD11b+, their true immunophenotype remains elusive. In this study, we found murine Gr1+CD11b+ cells can be divided into two subsets: Gr1+CD11b+B220- and Gr1+CD11b+B220+, especially in the spleen tissues. Unlike the dominant B220- subset, the B220+ subpopulation was not induced by tumor in vivo. Moreover, Gr1+CD11b+B220+ cells from tumor-bearing mice spleens were unable to induce arginase 1 and inducible nitric oxide synthase expression, inhibit T cell proliferation, or promote tumor growth in primary tumor site. Nevertheless, these cells suppressed tumor metastasis in vivo and reduced cancer cell motility in vitro, while Gr1+CD11b+B220- cells from tumor-bearing mice spleens promoted tumor metastasis and enhanced cancer cell motility. Furthermore, both the polymorphonuclear (PMN-MDSCs) and monocytic MDSCs (Mo-MDSCs) could be further divided into B220- and B220+ subsets; interestingly, tumor only induced the expansion of B220- PMN-MDSCs and B220- Mo-MDSCs, but not the B220+ counterparts. Compared with B220- PMN-MDSCs and B220- Mo-MDSCs, the Ly6G+Ly6C-CD11b+B220+ and Ly6G-Ly6C+CD11b+B220+ cells from tumor-bearing mice spleens exhibited a more mature phenotype without immunosuppressive activity. Additionally, IL-6 deficiency attenuated the tumor-induced accumulation of MDSCs, B220- MDSCs and B220- PMN-MDSCs but increased the percentages of Gr1+CD11b+B220+, Ly6G+Ly6C-CD11b+B220+, and Ly6G-Ly6C+CD11b+B220+ cells, indicating the opposing roles of the IL-6 signaling pathway in the expansion of B220- MDSCs and their B220+ counterparts. Taken together, our findings indicate that the B220+ subset is a distinct subset of Gr1+CD11b+ cells functionally different from the B220- subpopulation during tumorigenesis and induction of MDSCs to B220+ cells may be helpful for cancer therapy.
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Affiliation(s)
- Zhiqian Zhang
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, China.,School of Medicine, Southern University of Science and Technology, Shenzhen, Guangdong, China
| | - Xu Huang
- Department of Radiation Oncology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China
| | - Enlin Wang
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, China
| | - Yugang Huang
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, China
| | - Rongcun Yang
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, China.,Key Laboratory of Bioactive Materials Ministry of Education, Nankai University, Tianjin, China.,Department of Immunology, School of Medicine, Nankai University, Tianjin, China
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Gao Z, Xing K, Zhang C, Qi J, Wang L, Gao S, Lai R. Crystal structure and function of Rbj: A constitutively GTP-bound small G protein with an extra DnaJ domain. Protein Cell 2020; 10:760-763. [PMID: 30945136 PMCID: PMC6776491 DOI: 10.1007/s13238-019-0622-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Affiliation(s)
- Zhengrong Gao
- Key Laboratory of Bioactive Peptides of Yunnan Province/Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences, Kunming Institute of Zoology, Kunming, 650223, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Keke Xing
- CAS Key Laboratory of Bio-medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, 215163, China
| | - Chang Zhang
- CAS Key Laboratory of Bio-medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, 215163, China
| | - Jianxun Qi
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Liang Wang
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Shan Gao
- CAS Key Laboratory of Bio-medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, 215163, China.
| | - Ren Lai
- Key Laboratory of Bioactive Peptides of Yunnan Province/Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences, Kunming Institute of Zoology, Kunming, 650223, China.
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Liu LQ, Nie SP, Shen MY, Hu JL, Yu Q, Gong D, Xie MY. Tea Polysaccharides Inhibit Colitis-Associated Colorectal Cancer via Interleukin-6/STAT3 Pathway. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:4384-4393. [PMID: 29656647 DOI: 10.1021/acs.jafc.8b00710] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The interleukin-6 (IL-6)/signal transducer and activator of transcription (STAT)-3 signaling pathway regulates proliferation and survival of intestinal epithelial cells and has profound impact on the tumorigenesis of colitis-associated cancer (CAC). Tea polysaccharides (TPS) are the major nutraceutical component isolated from tea-leaves and are known to possess antioxidant, anti-inflammatory, and antitumor bioactivities. Here, we investigated the antitumor activities of TPS on CAC using the azoxymethane/dextran sulfate sodium (AOM/DSS) mouse model and IL-6-induced colorectal cancer cell line (CT26) and determined whether TPS exerted its antitumor effects through the IL-6/STAT3 pathway. Results demonstrated that TPS significantly decreased the tumor incidence, tumor size, and markedly inhibited the infiltration of pro-inflammatory cells and the secretion of pro-inflammatory cytokines via balancing cellular microenvironment. Furthermore, we found that TPS suppressed the activation of STAT3 and transcriptionally regulated the expressions of downstream genes including MMP2, cyclin Dl, survivin, and VEGF both in vivo and in vitro. Thus, it was concluded that TPS attenuated the progress of CAC via suppressing IL-6/STAT3 pathway and downstream genes' expressions, which indicated that TPS may be a hopeful antitumor agent for the prevention and treatment of colon cancer.
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Affiliation(s)
| | | | | | | | | | - Deming Gong
- New Zealand Institute of Natural Medicine Research , Auckland 2104 , New Zealand
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Zhu H, Gu Y, Xue Y, Yuan M, Cao X, Liu Q. CXCR2 + MDSCs promote breast cancer progression by inducing EMT and activated T cell exhaustion. Oncotarget 2017; 8:114554-114567. [PMID: 29383101 PMCID: PMC5777713 DOI: 10.18632/oncotarget.23020] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 11/14/2017] [Indexed: 12/02/2022] Open
Abstract
Although myeloid-derived suppressor cells (MDSCs) have been demonstrated to contribute to tumor initiation, progression and metastasis, however, which MDSC subsets are preferentially expanded and activated, and what's the key molecular mechanism responsible for specific MDSC subsets in promoting tumor progression need to be fully addressed. Here we identify that Ly6GmiLy6CloCD11b+CXCR2+ subpopulation (named CXCR2+ MDSCs) are predominately expanded and recruited in systemic and local tumor microenvironment during breast cancer progression and metastasis. The proportion of CXCR2+ MDSCs is inversely correlated with the infiltration of CD4+ or CD8+ T cells. Besides, CXCR2+ MDSCs promote breast cancer growth and metastasis to lung and/or lymph node in vivo. Furthermore, CXCR2+ MDSCs induce epithelial mesenchymal transition (EMT) of breast cancer cells via IL-6. Moreover, CXCR2+ MDSCs upregulate the expression of immunosuppressive molecules programmed cell death protein 1(PD1), PD1 ligand 1 (PDL1), lymphocyte activation gene 3 protein (LAG3), cytotoxic T lymphocyte antigen 4 (CTLA4), and T cell immunoglobulin domain and mucin domain protein 3 (TIM3) on CD4+ or CD8+ T cells, and induce exhaustion of the activated T cells partially via IFN-γ. These results demonstrate that CXCR2+ MDSCs accelerate breast cancer progression via directly inducing cancer cell EMT and indirectly promoting T cell exhaustion, suggesting that CXCR2+ MDSCs may be a potential therapeutic target of breast cancer.
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Affiliation(s)
- Ha Zhu
- National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, Shanghai 200433, China
| | - Yan Gu
- National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, Shanghai 200433, China
| | - Yiquan Xue
- National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, Shanghai 200433, China
| | - Ming Yuan
- National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, Shanghai 200433, China
| | - Xuetao Cao
- National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, Shanghai 200433, China
| | - Qiuyan Liu
- National Key Laboratory of Medical Immunology and Institute of Immunology, Second Military Medical University, Shanghai 200433, China
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