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Umekita S, Kiyozawa D, Kohashi K, Kawatoko S, Sasaki T, Ihara E, Oki E, Nakamura M, Ogawa Y, Oda Y. Clinicopathological significance of microsatellite instability and immune escape mechanism in patients with gastric solid-type poorly differentiated adenocarcinoma. Gastric Cancer 2024; 27:484-494. [PMID: 38441781 DOI: 10.1007/s10120-024-01474-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Accepted: 01/23/2024] [Indexed: 04/15/2024]
Abstract
BACKGROUND In gastric solid-type poorly differentiated adenocarcinoma (PDA), the role of microsatellite instability and immune escape mechanism remains unclear. The current study aimed to elucidate the clinical significance of mismatch repair (MMR) status, genome profile, C-X-C motif chemokine receptor 2 (CXCR2) expression, and myeloid-derived suppressor cell (MDSC) infiltration in solid-type PDA. METHODS In total, 102 primary solid-type PDA cases were retrieved, and classified into 46 deficient-MMR (dMMR) and 56 proficient-MMR (pMMR) cases based on immunohistochemistry (IHC) and polymerase chain reaction-based molecular testing results. The mRNA expression profiles (NanoString nCounter Assay) of stage-matched dMMR (n = 6) and pMMR (n = 6) cases were examined. The CXCR2 expression and MDSC infiltration (CD11b- and CD33-positive cells) were investigated via IHC in all solid-type PDA cases. RESULTS mRNA analysis revealed several differentially expressed genes and differences in biological behavior between the dMMR (n = 46) and pMMR (n = 56) groups. In the multivariate analysis, the dMMR status was significantly associated with a longer disease-free survival (hazard ratio = 5.152, p = 0.002) and overall survival (OS) (hazard ratio = 5.050, p = 0.005). CXCR2-high expression was significantly correlated with a shorter OS in the dMMR group (p = 0.018). A high infiltration of CD11b- and CD33-positive cells was significantly correlated with a shorter OS in the pMMR group (p = 0.022, 0.016, respectively). CONCLUSIONS dMMR status can be a useful prognostic predictor, and CXCR2 and MDSCs can be novel therapeutic targets in patients with solid-type PDA.
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Affiliation(s)
- Shinya Umekita
- Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Maidashi 3-1-1, Higashi-Ku, Fukuoka, 812-8582, Japan
| | - Daisuke Kiyozawa
- Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Maidashi 3-1-1, Higashi-Ku, Fukuoka, 812-8582, Japan
| | - Kenichi Kohashi
- Department of Pathology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
| | - Shinichiro Kawatoko
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Taisuke Sasaki
- Department of Medicine and Bioregulatory, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Eikichi Ihara
- Department of Medicine and Bioregulatory, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Eiji Oki
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Masafumi Nakamura
- Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoshihiro Ogawa
- Department of Medicine and Bioregulatory, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoshinao Oda
- Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Maidashi 3-1-1, Higashi-Ku, Fukuoka, 812-8582, Japan.
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Ji HZ, Liu B, Ren M, Li S, Zheng JF, Liu TY, Yu HH, Sun Y. The CXCLs- CXCR2 axis modulates the cross-communication between tumor-associated neutrophils and tumor cells in cervical cancer. Expert Rev Clin Immunol 2024; 20:559-569. [PMID: 38224014 DOI: 10.1080/1744666x.2024.2305808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 01/08/2024] [Indexed: 01/16/2024]
Abstract
OBJECTIVE This study aimed to check the expression profile of the C-X-C motif chemokine ligands (CXCLs)-C-X-C motif chemokine receptor 2 (CXCR2) axis in cervical cancer and to explore the cross-talk between cervical cancer cells and neutrophils via CXCLs-CXCR2 axis. METHODS Available RNA-sequencing data based on bulk tissues and single-cell/nucleus RNA-sequencing data were used for bioinformatic analysis. Cervical cancer cell lines Hela and SiHa cells were utilized for in vitro and in vivo studies. RESULTS Except for neutrophils, CXCR2 mRNA expression is limited in other types of cells in the cervical tumor microenvironment. CXCLs bind to CXCR2 and are mainly expressed by tumor cells. CXCL1, 2, 3, 5, 6, and 8, which are consistently associated with neutrophil infiltration, are also linked to poor prognosis. SB225002 (a CXCR2 inhibitor) treatment significantly impairs SiHa cell-induced neutrophil migration. CXCL1, CXCL2, CXCL5, or CXCL8 neutralized conditioned medium from SiHa cells have weaker recruiting effects. The conditioned medium of neutrophils from healthy donors can slow cancer cell proliferation. Conditioned medium of tumor-associated neutrophils (TANs) can drastically enhance cervical cancer cell growth in vitro and in vivo. CONCLUSIONS The CXCLs-CXCR2 axis is critical in neutrophil recruitment and tumor cell proliferation in the cervical cancer microenvironment.
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Affiliation(s)
- Hai-Zhou Ji
- Department of Gynecology, Fujian Cancer Hospital, Clinical Oncology School of Fujian Medical University, Fuzhou, China
| | - Bin Liu
- Department of Gynecology, Fujian Cancer Hospital, Clinical Oncology School of Fujian Medical University, Fuzhou, China
| | - Mi Ren
- Department of Oncological Nursing, Fujian Cancer Hospital, Clinical Oncology School of Fujian Medical University, Fuzhou, Fujian, China
| | - Sang Li
- Department of Gynecology, Fujian Cancer Hospital, Clinical Oncology School of Fujian Medical University, Fuzhou, China
| | - Jian-Feng Zheng
- Department of Gynecology, Fujian Cancer Hospital, Clinical Oncology School of Fujian Medical University, Fuzhou, China
| | - Tong-Yu Liu
- Department of Gynecology, Fujian Cancer Hospital, Clinical Oncology School of Fujian Medical University, Fuzhou, China
| | - Hui-Hui Yu
- Department of Gynecology, Fujian Cancer Hospital, Clinical Oncology School of Fujian Medical University, Fuzhou, China
| | - Yang Sun
- Department of Gynecology, Fujian Cancer Hospital, Clinical Oncology School of Fujian Medical University, Fuzhou, China
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Gao M, Cai Q, Bian Y, Wang Z, Xu L, Peng J. Protective effect of esculentoside A against myocardial infarction via targeting C-X-C motif chemokine receptor 2. Biomed Pharmacother 2024; 174:116529. [PMID: 38569275 DOI: 10.1016/j.biopha.2024.116529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Revised: 03/18/2024] [Accepted: 03/29/2024] [Indexed: 04/05/2024] Open
Abstract
Myocardial infarction (MI) is the primary cause of cardiac mortality. Esculentoside A (EsA), a triterpenoid saponin, has anti-inflammatory and antioxidant activities. However, its effect on MI remains unknown. In this study, the protective effect and mechanisms of EsA against MI were investigated. EsA significantly alleviated hypoxia-induced HL-1 cell injury, including increasing cell viability, inhibiting reactive oxygen species (ROS) production, mitochondrial membrane potential (MMP) and lactate dehydrogenase (LDH) leakage. In mouse MI model by left coronary artery (LAD) ligating, EsA obviously restored serum levels of creatine kinase isoenzymes (CK-MB), cardiac troponin I (cTnI), superoxide dismutase (SOD) and malondialdehyde (MDA). In addition, the cardioprotective effect of EsA was further confirmed by infarct size, electrocardiogram and echocardiography. Mechanistically, the targeted binding relationship between EsA and C-X-C motif chemokine receptor 2 (CXCR2) was predicted by molecular docking and dynamics, and validated by small molecule pull-down and surface plasmon resonance tests. EsA inhibited CXCR2 level both in vitro and in vivo, correspondingly alleviated oxidative stress by suppressing NOX1 and NOX2 and relieved inflammation through inhibiting p65 and p-p65. It demonstrated that EsA could play a cardioprotective role by targeting CXCR2. However, the effect of EsA against MI was abolished in combination with CXCR2 overexpression both in vitro and in vivo. This study revealed that EsA showed excellent cardioprotective activities by targeting CXCR2 to alleviate oxidative stress and inflammation in MI. EsA may function as a novel CXCR2 inhibitor and a potent candidate for the prevention and intervention of MI in the future.
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Affiliation(s)
- Meng Gao
- Institute of Intergrative Medicine, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China; College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China
| | - Qing Cai
- College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China
| | - Yehua Bian
- College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China
| | - Zhuoya Wang
- College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China
| | - Lina Xu
- College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China.
| | - Jinyong Peng
- College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China; College of Pharmacy, Hubei University of Chinese Medicine, Wuhan 430065, China; Department of Traditional Chinese Medicine Pharmacology, School of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China; Hubei Shizhen Laboratory, Wuhan 430065, China.
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Park SB, Yang Y, Bang SI, Kim TS, Cho D. AESIS-1, a Rheumatoid Arthritis Therapeutic Peptide, Accelerates Wound Healing by Promoting Fibroblast Migration in a CXCR2-Dependent Manner. Int J Mol Sci 2024; 25:3937. [PMID: 38612747 PMCID: PMC11012285 DOI: 10.3390/ijms25073937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 03/28/2024] [Accepted: 03/29/2024] [Indexed: 04/14/2024] Open
Abstract
In patients with autoimmune disorders such as rheumatoid arthritis (RA), delayed wound healing is often observed. Timely and effective wound healing is a crucial determinant of a patient's quality of life, and novel materials for skin wound repair, such as bioactive peptides, are continuously being studied and developed. One such bioactive peptide, AESIS-1, has been studied for its well-established anti-rheumatoid arthritis properties. In this study, we attempted to use the anti-RA material AESIS-1 as a therapeutic wound-healing agent based on disease-modifying antirheumatic drugs (DMARDs), which can help restore prompt wound healing. The efficacy of AESIS-1 in wound healing was assessed using a full-thickness excision model in diabetic mice; this is a well-established model for studying chronic wound repair. Initial observations revealed that mice treated with AESIS-1 exhibited significantly advanced wound repair compared with the control group. In vitro studies revealed that AESIS-1 increased the migration activity of human dermal fibroblasts (HDFs) without affecting proliferative activity. Moreover, increased HDF cell migration is mediated by upregulating chemokine receptor expression, such as that of CXC chemokine receptor 2 (CXCR2). The upregulation of CXCR2 through AESIS-1 treatment enhanced the chemotactic reactivity to CXCR2 ligands, including CXC motif ligand 8 (CXCL8). AESIS-1 directly activates the ERK and p38 mitogen-activated protein kinase (MAPK) signaling cascades, which regulate the migration and expression of CXCR2 in fibroblasts. Our results suggest that the AESIS-1 peptide is a strong wound-healing substance that increases the movement of fibroblasts and the expression of CXCR2 by turning on the ERK and p38 MAPK signaling cascades.
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Affiliation(s)
- Seung Beom Park
- Department of Life Sciences, College of Life Sciences and Biotechnology, Korea University, Anam-dong 5-ga, Seongbuk-gu, Seoul 02841, Republic of Korea;
| | - Yoolhee Yang
- Kine Sciences, 6F, 24, Eonju-ro85gil, Gangnam-gu, Seoul 06221, Republic of Korea; (Y.Y.); (D.C.)
| | - Sa Ik Bang
- Department of Plastic Surgery, Samsung Medical Center, School of Medicine, Sungkyunkwan University, Gangnam-gu, Seoul 06351, Republic of Korea;
| | - Tae Sung Kim
- Department of Life Sciences, College of Life Sciences and Biotechnology, Korea University, Anam-dong 5-ga, Seongbuk-gu, Seoul 02841, Republic of Korea;
| | - Daeho Cho
- Kine Sciences, 6F, 24, Eonju-ro85gil, Gangnam-gu, Seoul 06221, Republic of Korea; (Y.Y.); (D.C.)
- Institute of Convergence Science, Korea University, Anam-dong 5-ga, Seongbuk-gu, Seoul 02841, Republic of Korea
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Akaraphanth M, Nordgren TM, Gries CM. CXCR2 perturbation promotes Staphylococcus aureus implant-associated infection. J Med Microbiol 2024; 73. [PMID: 38567642 DOI: 10.1099/jmm.0.001821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024] Open
Abstract
Introduction. Staphylococcus aureus is the leading cause of acute medical implant infections, representing a significant modern medical concern. The success of S. aureus as a pathogen in these cases resides in its arsenal of virulence factors, resistance to multiple antimicrobials, mechanisms of immune modulation, and ability to rapidly form biofilms associated with implant surfaces. S. aureus device-associated, biofilm-mediated infections are often persistent and notoriously difficult to treat, skewing innate immune responses to promote chronic reoccurring infections. While relatively little is known of the role neutrophils play in response to acute S. aureus biofilm infections, these effector cells must be efficiently recruited to sites of infection via directed chemotaxis. Here we investigate the effects of modulating CXC chemokine receptor 2 (CXCR2) activity, predominantly expressed on neutrophils, during S. aureus implant-associated infection.Hypothesis. We hypothesize that modulation of CXCR2 expression and/or signalling activities during S. aureus infection, and thus neutrophil recruitment, extravasation and antimicrobial activity, will affect infection control and bacterial burdens in a mouse model of implant-associated infection.Aim. This investigation aims to elucidate the impact of altered CXCR2 activity during S. aureus biofilm-mediated infection that may help develop a framework for an effective novel strategy to prevent morbidity and mortality associated with implant infections.Methodology. To examine the role of CXCR2 during S. aureus implant infection, we employed a mouse model of indwelling subcutaneous catheter infection using a community-associated methicillin-resistant S. aureus (MRSA) strain. To assess the role of CXCR2 induction or inhibition during infection, treatment groups received daily intraperitoneal doses of either Lipocalin-2 (Lcn2) or AZD5069, respectively. At the end of the study, catheters and surrounding soft tissues were analysed for bacterial burdens and dissemination, and Cxcr2 transcription within the implant-associated tissues was quantified.Results. Mice treated with Lcn2 developed higher bacterial burdens within the soft tissue surrounding the implant site, which was associated with increased Cxcr2 expression. AZD5069 treatment also resulted in increased implant- and tissues-associated bacterial titres, as well as enhanced Cxcr2 expression.Conclusion. Our results demonstrate that CXCR2 plays an essential role in regulating the severity of S. aureus implant-associated infections. Interestingly, however, perturbation of CXCR2 expression or signalling both resulted in enhanced Cxcr2 transcription and elevated implant-associated bacterial burdens. Thus, CXCR2 appears finely tuned to efficiently recruit effector cells and mediate control of S. aureus biofilm-mediated infection.
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Affiliation(s)
- Mike Akaraphanth
- School of Medicine, University of Colorado, Aurora CO 80045, USA
| | - Tara M Nordgren
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins CO 80523, USA
| | - Casey M Gries
- Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins CO 80523, USA
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Dohi A, Noguchi T, Yamashita M, Sasaguri K, Yamamoto T, Mori Y. Acute stress transiently activates macrophages and chemokines in cervical lymph nodes. Immunol Res 2024; 72:212-224. [PMID: 38351242 PMCID: PMC11031481 DOI: 10.1007/s12026-023-09409-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 07/12/2023] [Indexed: 04/20/2024]
Abstract
Acute restraint stress (RS) is routinely used to study the effects of psychological and/or physiological stress. We evaluated the impact of RS on cervical lymph nodes in rats at molecular and cellular levels. Male Sprague-Dawley rats were subjected to stress by immobilization for 30, 60, and 120 min (RS30, RS60, and RS120, respectively) and compared with rats of a no-stress control (C) group. The expression of genes encoding chemokines CXCL1/CXCL2 (Cxcl1 and Cxcl2) and their receptor CXCR2 (Cxcr2) was analyzed using reverse transcription-quantitative PCR (RT-qPCR) and microarray analyses. Immunohistochemistry and in situ hybridization were performed to determine the expression of these proteins and the macrophage biomarker CD68. Microarray analysis revealed that the expression of 514 and 496 genes was upregulated and downregulated, respectively, in the RS30 group. Compared with the C group, the RS30 group exhibited a 23.0-, 13.0-, and 1.6-fold increase in Cxcl1, Cxcl2, and Cxcr2 expression. Gene Ontology analysis revealed the involvement of these three upregulated genes in the cytokine network, inflammation, and leukocyte chemotaxis and migration. RT-qPCR analysis indicated that the mRNA levels of Cxcl1 and Cxcl2 were significantly increased in the RS30 group but were reverted to normal levels in the RS60 and RS120 groups. Cxcr2 mRNA level was significantly increased in the RS30 and RS120 groups compared with that in the C group. RS-induced CXCL1-immunopositive cells corresponded to B/plasma cells, whereas CXCL2-immunopositive cells corresponded to endothelial cells of the high endothelial venules. Stress-induced CXCR2-immunopositive cells corresponded to macrophages. Psychological and/or physiological stress induces an acute stress response and formation of an immunoreactive microenvironment in cervical lymph nodes, with the CXCL1/CXCL2-CXCR2 axis being pivotal in the acute stress response.
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Affiliation(s)
- Akihiro Dohi
- Department of Dentistry, Oral and Maxillofacial Surgery, Jichi Medical University, Tochigi, 329-0498, Japan
| | - Tadahide Noguchi
- Department of Dentistry, Oral and Maxillofacial Surgery, Jichi Medical University, Tochigi, 329-0498, Japan.
| | - Masako Yamashita
- Department of Dentistry, Oral and Maxillofacial Surgery, Jichi Medical University, Tochigi, 329-0498, Japan
| | - Kenichi Sasaguri
- Department of Dentistry, Oral and Maxillofacial Surgery, Jichi Medical University, Tochigi, 329-0498, Japan
| | - Toshiharu Yamamoto
- Brain Functions and Neuroscience Division, Department of Oral Science, Graduate School of Dentistry, Kanagawa Dental University, Yokosuka, Kanagawa, Japan
| | - Yoshiyuki Mori
- Department of Dentistry, Oral and Maxillofacial Surgery, Jichi Medical University, Tochigi, 329-0498, Japan
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Tan Z, Chiu MS, Yue M, Kwok HY, Tse MH, Wen Y, Chen B, Yang D, Zhou D, Song YQ, Man K, Chen Z. Enhancing the efficacy of vaccinia-based oncolytic virotherapy by inhibiting CXCR2-mediated MDSC trafficking. J Leukoc Biol 2024; 115:633-646. [PMID: 38066571 DOI: 10.1093/jleuko/qiad150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 10/15/2023] [Accepted: 11/11/2023] [Indexed: 04/02/2024] Open
Abstract
Oncolytic virotherapy is an innovative approach for cancer treatment. However, recruitment of myeloid-derived suppressor cells (MDSCs) into the tumor microenvironment (TME) after oncolysis-mediated local inflammation leads to tumor resistance to the therapy. Using the murine malignant mesothelioma model, we demonstrated that the in situ vaccinia virotherapy recruited primarily polymorphonuclear MDSCs (PMN-MDSCs) into the TME, where they exhibited strong suppression of cytotoxic T lymphocytes in a reactive oxygen species-dependent way. Single-cell RNA sequencing analysis confirmed the suppressive profile of PMN-MDSCs at the transcriptomic level and identified CXCR2 as a therapeutic target expressed on PMN-MDSCs. Abrogating PMN-MDSC trafficking by CXCR2-specific small molecule inhibitor during the vaccinia virotherapy exhibited enhanced antitumor efficacy in 3 syngeneic cancer models, through increasing CD8+/MDSC ratios in the TME, activating cytotoxic T lymphocytes, and skewing suppressive TME into an antitumor environment. Our results warrant clinical development of CXCR2 inhibitor in combination with oncolytic virotherapy.
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Affiliation(s)
- Zhiwu Tan
- AIDS Institute and Department of Microbiology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, 21 Sassoon Road, Pokfulam, Hong Kong SAR, People's Republic of China
- Centre for Virology, Vaccinology and Therapeutics, Hong Kong Science and Technology Park, Shatin, N.T., Hong Kong SAR, People's Republic of China
| | - Mei Sum Chiu
- AIDS Institute and Department of Microbiology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, 21 Sassoon Road, Pokfulam, Hong Kong SAR, People's Republic of China
| | - Ming Yue
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Pokfulam, Hong Kong SAR, People's Republic of China
| | - Hau Yee Kwok
- AIDS Institute and Department of Microbiology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, 21 Sassoon Road, Pokfulam, Hong Kong SAR, People's Republic of China
| | - Man Ho Tse
- AIDS Institute and Department of Microbiology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, 21 Sassoon Road, Pokfulam, Hong Kong SAR, People's Republic of China
| | - Yang Wen
- AIDS Institute and Department of Microbiology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, 21 Sassoon Road, Pokfulam, Hong Kong SAR, People's Republic of China
| | - Bohao Chen
- AIDS Institute and Department of Microbiology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, 21 Sassoon Road, Pokfulam, Hong Kong SAR, People's Republic of China
| | - Dawei Yang
- AIDS Institute and Department of Microbiology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, 21 Sassoon Road, Pokfulam, Hong Kong SAR, People's Republic of China
| | - Dongyan Zhou
- AIDS Institute and Department of Microbiology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, 21 Sassoon Road, Pokfulam, Hong Kong SAR, People's Republic of China
- Centre for Virology, Vaccinology and Therapeutics, Hong Kong Science and Technology Park, Shatin, N.T., Hong Kong SAR, People's Republic of China
| | - You-Qiang Song
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Pokfulam, Hong Kong SAR, People's Republic of China
| | - Kwan Man
- Department of Surgery, The University of Hong Kong - Shenzhen Hospital, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Pokfulam, Hong Kong SAR, People's Republic of China
| | - Zhiwei Chen
- AIDS Institute and Department of Microbiology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, 21 Sassoon Road, Pokfulam, Hong Kong SAR, People's Republic of China
- Centre for Virology, Vaccinology and Therapeutics, Hong Kong Science and Technology Park, Shatin, N.T., Hong Kong SAR, People's Republic of China
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Cui S, Chen X, Li J, Wang W, Meng D, Zhu S, Shen S. Endothelial CXCR2 deficiency attenuates renal inflammation and glycocalyx shedding through NF-κB signaling in diabetic kidney disease. Cell Commun Signal 2024; 22:191. [PMID: 38528533 PMCID: PMC10964613 DOI: 10.1186/s12964-024-01565-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Accepted: 03/07/2024] [Indexed: 03/27/2024] Open
Abstract
BACKGROUND The incidence of diabetic kidney disease (DKD) continues to rapidly increase, with limited available treatment options. One of the hallmarks of DKD is persistent inflammation, but the underlying molecular mechanisms of early diabetic kidney injury remain poorly understood. C-X-C chemokine receptor 2 (CXCR2), plays an important role in the progression of inflammation-related vascular diseases and may bridge between glomerular endothelium and persistent inflammation in DKD. METHODS Multiple methods were employed to assess the expression levels of CXCR2 and its ligands, as well as renal inflammatory response and endothelial glycocalyx shedding in patients with DKD. The effects of CXCR2 on glycocalyx shedding, and persistent renal inflammation was examined in a type 2 diabetic mouse model with Cxcr2 knockout specifically in endothelial cells (DKD-Cxcr2 eCKO mice), as well as in glomerular endothelial cells (GECs), cultured in high glucose conditions. RESULTS CXCR2 was associated with early renal decline in DKD patients, and endothelial-specific knockout of CXCR2 significantly improved renal function in DKD mice, reduced inflammatory cell infiltration, and simultaneously decreased the expression of proinflammatory factors and chemokines in renal tissue. In DKD conditions, glycocalyx shedding was suppressed in endothelial Cxcr2 knockout mice compared to Cxcr2 L/L mice. Modulating CXCR2 expression also affected high glucose-induced inflammation and glycocalyx shedding in GECs. Mechanistically, CXCR2 deficiency inhibited the activation of NF-κB signaling, thereby regulating inflammation, restoring the endothelial glycocalyx, and alleviating DKD. CONCLUSIONS Taken together, under DKD conditions, activation of CXCR2 exacerbates inflammation through regulation of the NF-κB pathway, leading to endothelial glycocalyx shedding and deteriorating renal function. Endothelial CXCR2 deficiency has a protective role in inflammation and glycocalyx dysfunction, suggesting its potential as a promising therapeutic target for DKD treatment.
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Affiliation(s)
- Siyuan Cui
- Department of Endocrinology, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, Wuxi, China
- Department of Endocrinology, Jiangnan University Medical Center, Wuxi, China
| | - Xin Chen
- Department of Endocrinology, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, Wuxi, China
- Department of Endocrinology, Jiangnan University Medical Center, Wuxi, China
- Nanjing Medical University, Nanjing, China
| | - Jiayu Li
- Wuxi School of Medicine, Jiangnan University, Wuxi, China
| | - Wei Wang
- Wuxi School of Medicine, Jiangnan University, Wuxi, China
| | - Deqi Meng
- Department of Endocrinology, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, Wuxi, China
- Department of Endocrinology, Jiangnan University Medical Center, Wuxi, China
- Wuxi School of Medicine, Jiangnan University, Wuxi, China
| | - Shenglong Zhu
- Wuxi School of Medicine, Jiangnan University, Wuxi, China.
| | - Shiwei Shen
- Department of Endocrinology, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, Wuxi, China.
- Department of Endocrinology, Jiangnan University Medical Center, Wuxi, China.
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Moadab A, Valizadeh MR, Nazari A, Khorramdelazad H. Association of interleukin-17A and chemokine/vascular endothelial growth factor-induced angiogenesis in newly diagnosed patients with bladder cancer. BMC Immunol 2024; 25:20. [PMID: 38515019 PMCID: PMC10956274 DOI: 10.1186/s12865-024-00612-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Accepted: 03/13/2024] [Indexed: 03/23/2024] Open
Abstract
BACKGROUND The human interleukin-17 (IL-17) family comprises IL-17A to IL-17 F; their receptors are IL-17RA to IL-17RE. Evidence revealed that these cytokines can have a tumor-supportive or anti-tumor impact on human malignancies. The purpose of this study was to assess the expression of CXCR2, IL-17RA, and IL-17RC genes at the mRNA level as well as tissue and serum levels of IL-17A, vascular endothelial growth factor (VEGF), and transforming growth factor β (TGF-β) in patients with bladder cancer (BC) compared to control. RESULTS This study showed that gene expression of IL-17RA, IL-17RC, and CXCR2 in the tumoral tissue of BC patients was significantly upregulated compared with normal tissue. The findings disclosed a significant difference in the serum and tissue concentrations of IL-17A, VEGF, and TGF-β between the patient and the control groups, as well as tumor and normal tissues. CONCLUSION This study reveals notable dysregulation of CXCR2, IL-17RA, and IL-17RC genes, alongside changes in IL-17A, VEGF, and TGF-β levels in patients with BC than in controls. These findings indicate their possible involvement in BC development and their potential as diagnostic and therapeutic targets.
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Affiliation(s)
- Ali Moadab
- Department of Immunology, School of Medicine, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - Mohammad Rafie Valizadeh
- Department of Immunology, School of Medicine, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - Alireza Nazari
- Non-Communicable Diseases Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran.
- Department of Surgery, School of Medicine, Rafsanjan University of Medical Sciences, Rafsanjan, Iran.
| | - Hossein Khorramdelazad
- Department of Immunology, School of Medicine, Rafsanjan University of Medical Sciences, Rafsanjan, Iran.
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10
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Arshad J, Rao A, Repp ML, Rao R, Wu C, Merchant JL. Myeloid-Derived Suppressor Cells: Therapeutic Target for Gastrointestinal Cancers. Int J Mol Sci 2024; 25:2985. [PMID: 38474232 PMCID: PMC10931832 DOI: 10.3390/ijms25052985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 02/26/2024] [Accepted: 02/29/2024] [Indexed: 03/14/2024] Open
Abstract
Gastrointestinal cancers represent one of the more challenging cancers to treat. Current strategies to cure and control gastrointestinal (GI) cancers like surgery, radiation, chemotherapy, and immunotherapy have met with limited success, and research has turned towards further characterizing the tumor microenvironment to develop novel therapeutics. Myeloid-derived suppressor cells (MDSCs) have emerged as crucial drivers of pathogenesis and progression within the tumor microenvironment in GI malignancies. Many MDSCs clinical targets have been defined in preclinical models, that potentially play an integral role in blocking recruitment and expansion, promoting MDSC differentiation into mature myeloid cells, depleting existing MDSCs, altering MDSC metabolic pathways, and directly inhibiting MDSC function. This review article analyzes the role of MDSCs in GI cancers as viable therapeutic targets for gastrointestinal malignancies and reviews the existing clinical trial landscape of recently completed and ongoing clinical studies testing novel therapeutics in GI cancers.
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Affiliation(s)
- Junaid Arshad
- University of Arizona Cancer Center, GI Medical Oncology, Tucson, AZ 85724, USA;
| | - Amith Rao
- Banner University Medical Center—University of Arizona, Tucson, AZ 85719, USA; (A.R.)
| | - Matthew L. Repp
- College of Medicine, University of Arizona, Tucson, AZ 85719, USA;
| | - Rohit Rao
- University Hospitals Cleveland Medical Center, Case Western Reserve School of Medicine, Cleveland, OH 44106, USA;
| | - Clinton Wu
- Banner University Medical Center—University of Arizona, Tucson, AZ 85719, USA; (A.R.)
| | - Juanita L. Merchant
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Arizona College of Medicine, Tucson, AZ 85724, USA
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11
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Dai Z, Lin X, Wang X, Zou X, Yan Y, Wang R, Chen Y, Tasiheng Y, Ma M, Wang X, Cheng H, Yu X, Liu C. Ectopic CXCR2 expression cells improve the anti-tumor efficiency of CAR-T cells and remodel the immune microenvironment of pancreatic ductal adenocarcinoma. Cancer Immunol Immunother 2024; 73:61. [PMID: 38430267 PMCID: PMC10908625 DOI: 10.1007/s00262-024-03648-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 01/29/2024] [Indexed: 03/03/2024]
Abstract
BACKGROUND Recent progressions in CAR-T cell therapy against pancreatic ductal adenocarcinoma (PDAC) remain disappointing, which are partially attributed to the immunosuppressive microenvironment including macrophage-mediated T cell repletion. METHODS We first characterized the expression patterns of macrophage-relevant chemokines and identified CXCR2 as the key factor regulating T cell trafficking and tumor-specific accumulation in PDAC microenvironment. After that, we synthesized and introduced a CXCR2 expression cascade into Claudin18.2 CAR-T cells and compared the behaviors of CAR-T cells in vitro and in vivo. The therapeutic potential of CXCR2 CAR-T was evaluated in two different allogeneic models: subcutaneous allografts and metastatic PDAC models. RESULTS The results showed that CXCR2 CAR-T not only reduced the size of allografted PDAC tumors, but also completely eliminated the formation of metastases. Lastly, we investigated the tumor tissues and found that expression of ectopic CXCR2 significantly improved tumor-targeted infiltration and residence of T cells and reduced the presence of MDSCs and CXCR2 + macrophages in PDAC microenvironment. CONCLUSION Our studies suggested that ectopic CXCR2 played a significant and promising role in improving the efficiency of CAR-T therapy against primary and metastatic PDAC and partially reversed the immune-suppressive microenvironment.
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Affiliation(s)
- Zhengjie Dai
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, No. 270 Dong An Road, Xu-Hui District, Shanghai, 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Xuan Lin
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, No. 270 Dong An Road, Xu-Hui District, Shanghai, 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Xu Wang
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, No. 270 Dong An Road, Xu-Hui District, Shanghai, 200032, China.
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China.
- Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China.
- Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China.
- Cancer Research Institute, Shanghai Key Laboratory of Radiation Oncology, , Fudan University Shanghai Cancer Center, Fudan University, Shanghai, China.
| | - Xuan Zou
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, No. 270 Dong An Road, Xu-Hui District, Shanghai, 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Yu Yan
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, No. 270 Dong An Road, Xu-Hui District, Shanghai, 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Ruijie Wang
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, No. 270 Dong An Road, Xu-Hui District, Shanghai, 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Yusheng Chen
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, No. 270 Dong An Road, Xu-Hui District, Shanghai, 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Yesiboli Tasiheng
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, No. 270 Dong An Road, Xu-Hui District, Shanghai, 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Mingjian Ma
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, No. 270 Dong An Road, Xu-Hui District, Shanghai, 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - Xu Wang
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, No. 270 Dong An Road, Xu-Hui District, Shanghai, 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
- Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China
| | - He Cheng
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, No. 270 Dong An Road, Xu-Hui District, Shanghai, 200032, China.
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China.
- Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China.
- Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China.
| | - Xianjun Yu
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, No. 270 Dong An Road, Xu-Hui District, Shanghai, 200032, China.
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China.
- Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China.
- Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China.
| | - Chen Liu
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, No. 270 Dong An Road, Xu-Hui District, Shanghai, 200032, China.
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China.
- Shanghai Pancreatic Cancer Institute, Shanghai, 200032, China.
- Pancreatic Cancer Institute, Fudan University, Shanghai, 200032, China.
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12
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Banuelos A, Zhang A, Berouti H, Baez M, Yılmaz L, Georgeos N, Marjon KD, Miyanishi M, Weissman IL. CXCR2 inhibition in G-MDSCs enhances CD47 blockade for melanoma tumor cell clearance. Proc Natl Acad Sci U S A 2024; 121:e2318534121. [PMID: 38261615 PMCID: PMC10835053 DOI: 10.1073/pnas.2318534121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 12/16/2023] [Indexed: 01/25/2024] Open
Abstract
The use of colony-stimulating factor-1 receptor (CSF1R) inhibitors has been widely explored as a strategy for cancer immunotherapy due to their robust depletion of tumor-associated macrophages (TAMs). While CSF1R blockade effectively eliminates TAMs from the solid tumor microenvironment, its clinical efficacy is limited. Here, we use an inducible CSF1R knockout model to investigate the persistence of tumor progression in the absence of TAMs. We find increased frequencies of granulocytic myeloid-derived suppressor cells (G-MDSCs) in the bone marrow, throughout circulation, and in the tumor following CSF1R deletion and loss of TAMs. We find that G-MDSCs are capable of suppressing macrophage phagocytosis, and the elimination of G-MDSCs through CXCR2 inhibition increases macrophage capacity for tumor cell clearance. Further, we find that combination therapy of CXCR2 inhibition and CD47 blockade synergize to elicit a significant anti-tumor response. These findings reveal G-MDSCs as key drivers of tumor immunosuppression and demonstrate their inhibition as a potent strategy to increase macrophage phagocytosis and enhance the anti-tumor efficacy of CD47 blockade in B16-F10 melanoma.
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Affiliation(s)
- Allison Banuelos
- Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, Stanford, CA 94305
- Ludwig Center for Cancer Stem Cell Research and Medicine, Stanford University, Stanford, CA 94305
| | - Allison Zhang
- Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, Stanford, CA 94305
- Ludwig Center for Cancer Stem Cell Research and Medicine, Stanford University, Stanford, CA 94305
| | - Hala Berouti
- Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, Stanford, CA 94305
- Ludwig Center for Cancer Stem Cell Research and Medicine, Stanford University, Stanford, CA 94305
| | - Michelle Baez
- Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, Stanford, CA 94305
- Ludwig Center for Cancer Stem Cell Research and Medicine, Stanford University, Stanford, CA 94305
| | - Leyla Yılmaz
- Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, Stanford, CA 94305
- Ludwig Center for Cancer Stem Cell Research and Medicine, Stanford University, Stanford, CA 94305
| | - Nardin Georgeos
- Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, Stanford, CA 94305
- Ludwig Center for Cancer Stem Cell Research and Medicine, Stanford University, Stanford, CA 94305
| | - Kristopher D Marjon
- Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, Stanford, CA 94305
- Ludwig Center for Cancer Stem Cell Research and Medicine, Stanford University, Stanford, CA 94305
| | - Masanori Miyanishi
- Hematopoietic Stem Cell Biology and Medical Innovation (HSCBMI), Department of Pediatrics, Kobe University Graduate School of Medicine, Kobe 650-0047, Japan
| | - Irving L Weissman
- Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, Stanford, CA 94305
- Ludwig Center for Cancer Stem Cell Research and Medicine, Stanford University, Stanford, CA 94305
- Department of Pathology, Stanford University, Stanford, CA 94305
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13
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Boon K, Vanalken N, Szpakowska M, Chevigné A, Schols D, Van Loy T. Systematic assessment of chemokine ligand bias at the human chemokine receptor CXCR2 indicates G protein bias over β-arrestin recruitment and receptor internalization. Cell Commun Signal 2024; 22:43. [PMID: 38233929 PMCID: PMC10795402 DOI: 10.1186/s12964-023-01460-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 12/26/2023] [Indexed: 01/19/2024] Open
Abstract
BACKGROUND The human CXC chemokine receptor 2 (CXCR2) is a G protein-coupled receptor (GPCR) interacting with multiple chemokines (i.e., CXC chemokine ligands CXCL1-3 and CXCL5-8). It is involved in inflammatory diseases as well as cancer. Consequently, much effort is put into the identification of CXCR2 targeting drugs. Fundamental research regarding CXCR2 signaling is mainly focused on CXCL8 (IL-8), which is the first and best described high-affinity ligand for CXCR2. Much less is known about CXCR2 activation induced by other chemokines and it remains to be determined to what extent potential ligand bias exists within this signaling system. This insight might be important to unlock new opportunities in therapeutic targeting of CXCR2. METHODS Ligand binding was determined in a competition binding assay using labeled CXCL8. Activation of the ELR + chemokine-induced CXCR2 signaling pathways, including G protein activation, β-arrestin1/2 recruitment, and receptor internalization, were quantified using NanoBRET-based techniques. Ligand bias within and between these pathways was subsequently investigated by ligand bias calculations, with CXCL8 as the reference CXCR2 ligand. Statistical significance was tested through a one-way ANOVA followed by Dunnett's multiple comparisons test. RESULTS All chemokines (CXCL1-3 and CXCL5-8) were able to displace CXCL8 from CXCR2 with high affinity and activated the same panel of G protein subtypes (Gαi1, Gαi2, Gαi3, GαoA, GαoB, and Gα15) without any statistically significant ligand bias towards any one type of G protein. Compared to CXCL8, all other chemokines were less potent in β-arrestin1 and -2 recruitment and receptor internalization while equivalently activating G proteins, indicating a G protein activation bias for CXCL1,-2,-3,-5,-6 and CXCL7. Lastly, with CXCL8 used as reference ligand, CXCL2 and CXCL6 showed ligand bias towards β-arrestin1/2 recruitment compared to receptor internalization. CONCLUSION This study presents an in-depth analysis of signaling bias upon CXCR2 stimulation by its chemokine ligands. Using CXCL8 as a reference ligand for bias index calculations, no ligand bias was observed between chemokines with respect to activation of separate G proteins subtypes or recruitment of β-arrestin1/2 subtypes, respectively. However, compared to β-arrestin recruitment and receptor internalization, CXCL1-3 and CXCL5-7 were biased towards G protein activation when CXCL8 was used as reference ligand.
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Affiliation(s)
- Katrijn Boon
- Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, KU Leuven, B-3000, Leuven, Belgium
| | - Nathan Vanalken
- Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, KU Leuven, B-3000, Leuven, Belgium
| | - Martyna Szpakowska
- Department of Infection and Immunity, Immuno-Pharmacology and Interactomics, Luxembourg Institute of Health (LIH), Esch-Sur-Alzette, Luxembourg
| | - Andy Chevigné
- Department of Infection and Immunity, Immuno-Pharmacology and Interactomics, Luxembourg Institute of Health (LIH), Esch-Sur-Alzette, Luxembourg
| | - Dominique Schols
- Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, KU Leuven, B-3000, Leuven, Belgium
| | - Tom Van Loy
- Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, KU Leuven, B-3000, Leuven, Belgium.
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14
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Lazennec G, Rajarathnam K, Richmond A. CXCR2 chemokine receptor - a master regulator in cancer and physiology. Trends Mol Med 2024; 30:37-55. [PMID: 37872025 PMCID: PMC10841707 DOI: 10.1016/j.molmed.2023.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 09/14/2023] [Accepted: 09/18/2023] [Indexed: 10/25/2023]
Abstract
Recent findings have modified our understanding of the roles of chemokine receptor CXCR2 and its ligands in cancer, inflammation, and immunity. Studies in Cxcr2 tissue-specific knockout mice show that this receptor is involved in, among other things, cancer, central nervous system (CNS) function, metabolism, reproduction, COVID-19, and the response to circadian cycles. Moreover, CXCR2 involvement in neutrophil function has been revisited not only in physiology but also for its major contribution to cancers. The recent unfolding of the role of CXCR2 in numerous cancers has led to extensive evaluation of multiple CXCR2 antagonists in preclinical and clinical studies. In this review we discuss the potential of targeting CXCR2 for cancer treatment.
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Affiliation(s)
- Gwendal Lazennec
- Centre National de la Recherche Scientifique (CNRS), Sys2Diag-ALCEDIAG, Cap Delta, Montpellier, France; CNRS Groupement de Recherche (GDR) 3697 'Microenvironment of Tumor Niches', Micronit, France.
| | - Krishna Rajarathnam
- Department of Biochemistry and Molecular Biology, Department of Microbiology and Immunology, Sealy Center for Structural Biology and Molecular Biophysics, University of Texas Medical Branch, Galveston, TX, USA
| | - Ann Richmond
- Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, TN, USA; Vanderbilt University School of Medicine, Department of Pharmacology, Nashville, TN, USA; Vanderbilt Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
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15
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Ma GB, Chen WX, Zhan FJ, Xie WJ, Chen RW, Chen H, Ye WL, Jiang Y, Xu JP. Circ_0002295 facilitated myocardial fibrosis progression through the miR-1287/ CXCR2 axis. Clin Exp Pharmacol Physiol 2023; 50:944-953. [PMID: 37688444 DOI: 10.1111/1440-1681.13819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 07/25/2023] [Accepted: 08/17/2023] [Indexed: 09/10/2023]
Abstract
Myocardial fibrosis (MF) is involved in hypertension, myocardial infarction and heart failure. It has been reported that circular RNA (circRNA) is a key regulatory factor of MF progression. In this study, we revealed that circ_0002295 and CXCR2 were elevated, and miR-1287 was reduced in MF patients. Knockdown of circ_0002295 effectively suppressed the proliferation, migration and MF progression. Circ_0002295 was the molecular sponge of miR-12878, and miR-1287 inhibitor reversed the biological functions of circ_0002295 on the myocardial fibrosis. CXCR2 was a target gene of miR-1287, and CXCR2 silencing relieved the impacts of miR-1287 inhibitor on cardiac myofibroblasts. Circ_0002295 promoted MF progression by regulating the miR-1287/CXCR2 axis, providing a possible circRNA-targeted therapy for MF.
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Affiliation(s)
- Guo-Bin Ma
- Department of Cardiology, Fuzhou Second Hospital, Fuzhou, China
| | - Wen-Xu Chen
- Department of Clinical Laboratory, Fuzhou Second Hospital, Fuzhou, China
| | - Fang-Jie Zhan
- Department of Clinical Laboratory, Fuzhou Second Hospital, Fuzhou, China
| | - Wen-Jing Xie
- Department of Clinical Laboratory, Fuzhou Second Hospital, Fuzhou, China
| | - Rong-Wei Chen
- Department of Clinical Laboratory, Fuzhou Second Hospital, Fuzhou, China
| | - Hong Chen
- Department of Clinical Laboratory, Fuzhou Second Hospital, Fuzhou, China
| | - Wei-Lin Ye
- Department of Clinical Laboratory, Fuzhou Second Hospital, Fuzhou, China
| | - Yu Jiang
- Department of Clinical Laboratory, Fuzhou Second Hospital, Fuzhou, China
| | - Jian-Ping Xu
- Department of Clinical Laboratory Medicine, Fujian Medical University, Fuzhou, China
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16
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Goshima A, Etani Y, Hirao M, Yamakawa S, Okamura G, Miyama A, Takami K, Miura T, Fukuda Y, Kurihara T, Ochiai N, Oyama S, Otani S, Tamaki M, Ishibashi T, Tomita T, Kanamoto T, Nakata K, Okada S, Ebina K. Basic fibroblast growth factor promotes meniscus regeneration through the cultivation of synovial mesenchymal stem cells via the CXCL6- CXCR2 pathway. Osteoarthritis Cartilage 2023; 31:1581-1593. [PMID: 37562758 DOI: 10.1016/j.joca.2023.07.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 06/21/2023] [Accepted: 07/20/2023] [Indexed: 08/12/2023]
Abstract
OBJECTIVE To investigate the efficacy of basic fibroblast growth factor (bFGF) in promoting meniscus regeneration by cultivating synovial mesenchymal stem cells (SMSCs) and to validate the underlying mechanisms. METHODS Human SMSCs were collected from patients with osteoarthritis. Eight-week-old nude rats underwent hemi-meniscectomy, and SMSCs in pellet form, either with or without bFGF (1.0 × 106 cells per pellet), were implanted at the site of meniscus defects. Rats were divided into the control (no transplantation), FGF (-) (pellet without bFGF), and FGF (+) (pellet with bFGF) groups. Different examinations, including assessment of the regenerated meniscus area, histological scoring of the regenerated meniscus and cartilage, meniscus indentation test, and immunohistochemistry analysis, were performed at 4 and 8 weeks after surgery. RESULTS Transplanted SMSCs adhered to the regenerative meniscus. Compared with the control group, the FGF (+) group had larger regenerated meniscus areas, superior histological scores of the meniscus and cartilage, and better meniscus mechanical properties. RNA sequencing of SMSCs revealed that the gene expression of chemokines that bind to CXCR2 was upregulated by bFGF. Furthermore, conditioned medium derived from SMSCs cultivated with bFGF exhibited enhanced cell migration, proliferation, and chondrogenic differentiation, which were specifically inhibited by CXCR2 or CXCL6 inhibitors. CONCLUSION SMSCs cultured with bFGF promoted the expression of CXCL6. This mechanism may enhance cell migration, proliferation, and chondrogenic differentiation, thereby resulting in superior meniscus regeneration and cartilage preservation.
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Affiliation(s)
- Atsushi Goshima
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Yuki Etani
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Makoto Hirao
- Department of Orthopaedic Surgery, National Hospital Organization, Osaka Minami Medical Center, 2-1 Kidohigashi-machi, Kawachinagano, Osaka 586-8521, Japan
| | - Satoshi Yamakawa
- Department of Sports Medical Biomechanics, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Gensuke Okamura
- Department of Orthopaedic Surgery, Osaka Rosai Hospital, 1179-3 Nagasone-cho, Kita-ku, Sakai 591-8025, Japan
| | - Akira Miyama
- Department of Orthopaedic Surgery, Osaka Toneyama Medical Center, 5-1-1 Toneyama, Toyonaka, Osaka 560-8552, Japan
| | - Kenji Takami
- Department of Orthopedic Surgery, Nippon Life Hospital, 2-1-54 Enokojima, Nishi-ku, Osaka 550-0006, Japan
| | - Taihei Miura
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Yuji Fukuda
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Takuya Kurihara
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Nagahiro Ochiai
- Department of Musculoskeletal Regenerative Medicine, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Shohei Oyama
- Department of Musculoskeletal Regenerative Medicine, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Shunya Otani
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Masashi Tamaki
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Teruya Ishibashi
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Tetsuya Tomita
- Graduate School of Health Sciences, Morinomiya University of Medical Sciences, 1-26-16, Nankou-kita, Suminoe, Osaka, Japan
| | - Takashi Kanamoto
- Department of Health and Sport Sciences, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Ken Nakata
- Department of Health and Sport Sciences, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Seiji Okada
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Kosuke Ebina
- Department of Musculoskeletal Regenerative Medicine, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, Osaka 565-0871, Japan.
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17
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Vadillo E, Mantilla A, Aguilar-Flores C, De León-Rodríguez SG, Vela-Patiño S, Badillo J, Taniguchi-Ponciano K, Marrero-Rodríguez D, Ramírez L, León-Vega II, Fuentes-Castañeda C, Piña-Sánchez P, Prieto-Chávez JL, Pérez-Kondelkova V, Montesinos JJ, Bonifaz L, Pelayo R, Mayani H, Schnoor M. The invasive margin of early-stage human colon tumors is infiltrated with neutrophils of an antitumoral phenotype. J Leukoc Biol 2023; 114:672-683. [PMID: 37820030 DOI: 10.1093/jleuko/qiad123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 09/13/2023] [Accepted: 09/18/2023] [Indexed: 10/13/2023] Open
Abstract
Neutrophils infiltrate several types of cancer; however, whether their presence is associated with disease progression remains controversial. Here, we show that colon tumors overexpress neutrophil chemoattractants compared to healthy tissues, leading to their recruitment to the invasive margin and the central part of colon tumors. Of note, tumor-associated neutrophils expressing tumor necrosis factor α, which usually represents an antitumoral phenotype, were predominantly located in the invasive margin. Tumor-associated neutrophils from the invasive margin displayed an antitumoral phenotype with higher ICAM-1 and CD95 expression than neutrophils from healthy adjacent tissues. A higher neutrophil/lymphocyte ratio was found at later stages compared to the early phases of colon cancer. A neutrophil/lymphocyte ratio ≤3.5 predicted tumor samples had significantly more neutrophils at the invasive margin and the central part. Moreover, tumor-associated neutrophils at the invasive margin of early-stage tumors showed higher ICAM-1 and CD95 expression. Coculture of colon cancer cell lines with primary neutrophils induced ICAM-1 and CD95 expression, confirming our in situ findings. Thus, our data demonstrate that tumor-associated neutrophils with an antitumoral phenotype characterized by high ICAM-1 and CD95 expression infiltrate the invasive margin of early-stage colon tumors, suggesting that these cells can combat the disease at its early courses. The presence of tumor-associated neutrophils with antitumoral phenotype could help predict outcomes of patients with colon cancer.
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Affiliation(s)
- Eduardo Vadillo
- Unidad de Investigación Médica en Enfermedades Oncológicas, UMAE Hospital de Oncología, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social (CMN S.XXI IMSS), Avenida Cuauhtémoc No. 330, Colonia Doctores, Mexico City 06720, Mexico
| | - Alejandra Mantilla
- Servicio de Patología, Hospital de Oncología CMN S.XXI IMSS, Avenida Cuauhtémoc No. 330, Colonia Doctores, Mexico City 06720, Mexico
| | - Cristina Aguilar-Flores
- UMAE Hospital de Pediatría, CMN S.XXI IMSS, Avenida Cuauhtémoc No. 330, Colonia Doctores, Mexico City 06720, Mexico
| | - Saraí Gisel De León-Rodríguez
- Unidad de Investigación Médica en Inmunoquímica, UMAE Hospital de Especialidades, CMN S.XXI IMSS, Avenida Cuauhtémoc No. 330, Colonia Doctores, Mexico City 06720, Mexico
| | - Sandra Vela-Patiño
- Unidad de Investigación Médica en Enfermedades Endocrinas, UMAE Hospital de Especialidades, CMN S.XXI IMSS, Avenida Cuauhtémoc No. 330, Colonia Doctores, Mexico City 06720, Mexico
| | - Juan Badillo
- Unidad de Investigación Médica en Enfermedades Oncológicas, UMAE Hospital de Oncología, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social (CMN S.XXI IMSS), Avenida Cuauhtémoc No. 330, Colonia Doctores, Mexico City 06720, Mexico
| | - Keiko Taniguchi-Ponciano
- Unidad de Investigación Médica en Enfermedades Endocrinas, UMAE Hospital de Especialidades, CMN S.XXI IMSS, Avenida Cuauhtémoc No. 330, Colonia Doctores, Mexico City 06720, Mexico
| | - Daniel Marrero-Rodríguez
- Unidad de Investigación Médica en Enfermedades Endocrinas, UMAE Hospital de Especialidades, CMN S.XXI IMSS, Avenida Cuauhtémoc No. 330, Colonia Doctores, Mexico City 06720, Mexico
| | - Lourdes Ramírez
- Servicio de Colon y Recto, Hospital de Oncología CMN S.XXI IMSS, Avenida Cuauhtémoc No. 330, Colonia Doctores, Mexico City 06720, Mexico
| | - Iliana Itzel León-Vega
- Departmento de Biomedicina Molecular, CINVESTAV-IPN, Av. IPN 2508, San Pedro Zacatenco, Mexico City 07360, Mexico
| | - Carmen Fuentes-Castañeda
- Unidad de Investigación Médica en Enfermedades Oncológicas, UMAE Hospital de Oncología, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social (CMN S.XXI IMSS), Avenida Cuauhtémoc No. 330, Colonia Doctores, Mexico City 06720, Mexico
| | - Patricia Piña-Sánchez
- Unidad de Investigación Médica en Enfermedades Oncológicas, UMAE Hospital de Oncología, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social (CMN S.XXI IMSS), Avenida Cuauhtémoc No. 330, Colonia Doctores, Mexico City 06720, Mexico
| | - Jessica Lakshmi Prieto-Chávez
- Laboratorio de Citometría-Centro de Instrumentos, División de Desarrollo de la Investigación en Salud, CMN S.XXI IMSS, Av Cuauhtémoc No. 330, Colonia Doctores, Mexico City 06720, Mexico
| | - Vadim Pérez-Kondelkova
- Laboratorio Nacional de Microscopía Avanzada, División de Desarrollo de la Investigación, CMN S.XXI IMSS, Avenida Cuauhtémoc No. 330, Colonia Doctores, Mexico City 06720, Mexico
| | - Juan José Montesinos
- Unidad de Investigación Médica en Enfermedades Oncológicas, UMAE Hospital de Oncología, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social (CMN S.XXI IMSS), Avenida Cuauhtémoc No. 330, Colonia Doctores, Mexico City 06720, Mexico
| | - Laura Bonifaz
- Unidad de Investigación Médica en Inmunoquímica, UMAE Hospital de Especialidades, CMN S.XXI IMSS, Avenida Cuauhtémoc No. 330, Colonia Doctores, Mexico City 06720, Mexico
- Coordinación de Investigación en Salud, CMN S.XXI IMSS, Avenida Cuauhtémoc No. 330, Colonia Doctores, Mexico City 06720, Mexico
| | - Rosana Pelayo
- Unidad de Educación e Investigación, IMSS, Avenida Cuauhtémoc No. 330, Colonia Doctores, Mexico City 06720, Mexico
- Centro de Investigación Biomédica de Oriente, IMSS, Km 4.5 Carretera Atlixco-Metepec, Atlixco-Metepec, 74360 Puebla, Mexico
| | - Héctor Mayani
- Unidad de Investigación Médica en Enfermedades Oncológicas, UMAE Hospital de Oncología, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social (CMN S.XXI IMSS), Avenida Cuauhtémoc No. 330, Colonia Doctores, Mexico City 06720, Mexico
| | - Michael Schnoor
- Departmento de Biomedicina Molecular, CINVESTAV-IPN, Av. IPN 2508, San Pedro Zacatenco, Mexico City 07360, Mexico
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Wujcicka WI, Zając A, Szyłło K, Romanowicz H, Smolarz B, Stachowiak G. Associations between Single Nucleotide Polymorphisms from the Genes of Chemokines and the CXCR2 Chemokine Receptor and an Increased Risk of Endometrial Cancer. Cancers (Basel) 2023; 15:5416. [PMID: 38001676 PMCID: PMC10670474 DOI: 10.3390/cancers15225416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 11/09/2023] [Accepted: 11/10/2023] [Indexed: 11/26/2023] Open
Abstract
Significant relationships with endometrial cancer were demonstrated, both for CCL2, CCL5, and CXCL8 chemokines and for the chemokine receptor CXCR2. The reported case-control study of genetic associations was designed to establish the role of selected single nucleotide polymorphisms (SNPs) of the CCL2, CCL5, CXCL8, and CXCR2 genes in the onset and progression of endometrial cancer. This study was conducted on 282 women, including 132 (46.8%) patients with endometrial cancer and 150 (53.2%) non-cancerous controls. The genotypes for CCL2 rs4586, CCL5 rs2107538 and rs2280789, CXCL8 rs2227532 and -738 T>A, and CXCR2 rs1126580 were determined, using PCR-RFLP assays. The AA homozygotes in CCL5 rs2107538 were associated with more than a quadruple risk of endometrial cancer (p ≤ 0.050). The GA heterozygotes in the CXCR2 SNP were associated with approximately threefold higher cancer risk (p ≤ 0.001). That association also remained significant after certain adjustments, carried out for age, diabetes mellitus, arterial hypertension, or endometrial thickness above 5 mm (p ≤ 0.050). The A-A haplotypes for the CCL5 polymorphisms and T-A-A haplotypes for the CCL2 and CCL5 SNPs were associated with about a twofold risk of endometrial cancer (p ≤ 0.050). In conclusion, CCL2 rs4586, CCL5 rs2107538 and rs2280789, and CXCR2 rs1126580 demonstrated significant associations with an increased risk of endometrial cancer.
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Affiliation(s)
- Wioletta Izabela Wujcicka
- Scientific Laboratory of the Center of Medical Laboratory Diagnostics and Screening, Polish Mother’s Memorial Hospital—Research Institute, 93-338 Lodz, Poland
| | - Agnieszka Zając
- Department of Operative Gynecology and Gynecologic Oncology, Polish Mother’s Memorial Hospital—Research Institute, 93-338 Lodz, Poland; (A.Z.); (K.S.); (G.S.)
| | - Krzysztof Szyłło
- Department of Operative Gynecology and Gynecologic Oncology, Polish Mother’s Memorial Hospital—Research Institute, 93-338 Lodz, Poland; (A.Z.); (K.S.); (G.S.)
- Department of Operative and Endoscopic Gynecology, Medical University of Lodz, 93-338 Lodz, Poland
| | - Hanna Romanowicz
- Department of Clinical Pathomorphology, Polish Mother’s Memorial Hospital—Research Institute, 93-338 Lodz, Poland;
| | - Beata Smolarz
- Laboratory of Cancer Genetics of the Department of Clinical Pathomorphology, Polish Mother’s Memorial Hospital—Research Institute, 93-338 Lodz, Poland;
| | - Grzegorz Stachowiak
- Department of Operative Gynecology and Gynecologic Oncology, Polish Mother’s Memorial Hospital—Research Institute, 93-338 Lodz, Poland; (A.Z.); (K.S.); (G.S.)
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19
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Zhang S, Sun F, Zhu J, Qi J, Wang W, Liu Z, Li W, Liu C, Liu X, Wang N, Song X, Zhang D, Qi D, Wang X. Phillyrin ameliorates influenza a virus-induced pulmonary inflammation by antagonizing CXCR2 and inhibiting NLRP3 inflammasome activation. Virol J 2023; 20:262. [PMID: 37957672 PMCID: PMC10644626 DOI: 10.1186/s12985-023-02219-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 10/28/2023] [Indexed: 11/15/2023] Open
Abstract
Influenza is an acute viral respiratory illness with high morbidity rates worldwide. Excessive pulmonary inflammation is the main characteristic of lethal influenza A virus (IAV) infections. Therapeutic options for managing influenza are limited to vaccines and some antiviral medications. Phillyrin is one of the major bioactive components of the Chinese herbal medicine Forsythia suspensa, which has the functions of sterilization, heat clearing and detoxification. In this work, the effect and mechanism of phillyrin on H1N1 influenza (PR8)-induced pneumonia were investigated. We reported that phillyrin (15 mg/kg) treatment after viral challenge significantly improved the weight loss, ameliorated pulmonary inflammation and inhibited the accumulation of multiple cytokines and chemokines in bronchoalveolar lavage fluid on 7 days post infection (dpi). In vitro, phillyrin suppressed influenza viral replication (Matrixprotein and nucleoprotein messenger RNA level) and reduced influenza virus-induced cytopathic effect (CPE). Furthermore,chemokine receptor CXCR2 was confirmed to be markedly inhibited by phillyrin. Surface plasmon resonance results reveal that phillyrin exhibits binding affinity to CXCR2, having a binding affinity constant (KD) value of 1.858e-5 M, suggesting that CXCR2 is a potential therapeutic target for phillyrin. Moreover, phillyrin inhibited the mRNA and protein expression levels of Caspase1, ASC and NLRP3 in the lungs of mice with H1N1-induced pneumonia.This study reveals that phillyrin ameliorates IAV-induced pulmonary inflammation by antagonizing CXCR2 and inhibiting NLRP3 inflammasome activation partly.
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Affiliation(s)
- Shanyu Zhang
- Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
- Key Laboratory of Traditional Chinese Medicine Classical Theory, Ministry of Education, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
- Shandong Provincial Key Laboratory of Traditional Chinese Medicine for Basic Research, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
| | - Fengzhi Sun
- Shandong Provincial Maternal and Child Health Care Hospital Affiliated to Qingdao University, Jinan, 250014, China
| | - Jinlu Zhu
- Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
| | - Jianhong Qi
- Department of Pharmaceutics, China Pharmaceutical University, Nanjing, 211198, China
| | - Wenjing Wang
- Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
| | - Ziming Liu
- Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
| | - Wenqian Li
- Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
| | - Chuanguo Liu
- Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
- Experimental Center, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
- Shandong Provincial Key Laboratory of Traditional Chinese Medicine for Basic Research, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
| | - Xuehuan Liu
- Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
- Experimental Center, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
| | - Nonghan Wang
- Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
| | - Xinyu Song
- Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
| | - Dan Zhang
- Shandong University of Traditional Chinese Medicine, Jinan, 250355, China.
- Experimental Center, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China.
- Key Laboratory of Traditional Chinese Medicine Classical Theory, Ministry of Education, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China.
- Shandong Provincial Key Laboratory of Traditional Chinese Medicine for Basic Research, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China.
| | - Dongmei Qi
- Shandong University of Traditional Chinese Medicine, Jinan, 250355, China.
- Experimental Center, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China.
- Key Laboratory of Traditional Chinese Medicine Classical Theory, Ministry of Education, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China.
- Shandong Provincial Key Laboratory of Traditional Chinese Medicine for Basic Research, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China.
| | - Xiaolong Wang
- Shandong University of Traditional Chinese Medicine, Jinan, 250355, China.
- Experimental Center, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China.
- Key Laboratory of Traditional Chinese Medicine Classical Theory, Ministry of Education, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China.
- Shandong Provincial Key Laboratory of Traditional Chinese Medicine for Basic Research, Shandong University of Traditional Chinese Medicine, Jinan, 250355, China.
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20
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Zha L, Guo X, Liang X, Chen Y, Gan D, Li W, Wang Z, Zhang H. Transcriptomic analysis reveals the promotion of lymph node metastasis by Helicobacter pylori infection via upregulating chemokine (C-X-C motif) receptor 2 expression in gastric carcinoma. Genes Dis 2023; 10:2614-2621. [PMID: 37554183 PMCID: PMC10404868 DOI: 10.1016/j.gendis.2022.10.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 08/09/2022] [Accepted: 10/23/2022] [Indexed: 12/13/2022] Open
Abstract
Gastric carcinoma (GC) progression is mainly caused by local aggression and lymph node metastasis. However, some patients with early T-stage disease have lymph node metastasis, whereas some patients with late T-stage disease do not have lymph node metastasis, which indicates that invasion and metastasis are not always sequential in some GC patients. In the present study, the data of 101 GC cases were acquired from TCGA and divided into T-late-N-negative and T-early-N-positive groups according to pathological stages. A total of 338 genes were identified as differential genes between the T-late-N-negative and T-early-N-positive groups. GSEA showed that epithelial cell signaling in the Helicobacter pylori (HP) infection pathway was enriched in the T-early-N-positive group. MB staining indicated that the HP infection rate was 63% (39/62) in N-positive patients compared to 42% (16/38) in N-negative patients. To investigate the potential mechanism, we focused on the gene chemokine (C-X-C motif) receptor 2 (CXCR2), which was not only clustered in the gene set of epithelial cells signaling in the HP infection pathway but also significantly upregulated in T-early-N-positive GC by the analysis of the different genes based on the TCGA dataset. A meta-analysis showed that CXCR2 expression was positively correlated with N-stage but not with T-stage in GC. This study indicated that invasion and metastasis could be independent processes driven by different molecular mechanisms in some GC patients. HP infection was a potential factor that promoted lymph node metastasis by upregulating CXCR2 expression.
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Affiliation(s)
- Lang Zha
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Xiong Guo
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Xiaolong Liang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Yuedong Chen
- Department of Gastrointestinal Surgery, The Tongliang Hospital of the First Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Deyong Gan
- Department of Gastrointestinal Surgery, The Tongliang Hospital of the First Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Wenwen Li
- Department of Pathology, Faculty of Basic Medicine, Chongqing Medical University, Chongqing 400016, China
| | - Ziwei Wang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Hongyu Zhang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
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21
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Kim JH, Kang KW, Park Y, Kim BS. CXCR2 inhibition overcomes ponatinib intolerance by eradicating chronic myeloid leukemic stem cells through PI3K/Akt/mTOR and dipeptidylpeptidase Ⅳ (CD26). Heliyon 2023; 9:e22091. [PMID: 38045173 PMCID: PMC10692791 DOI: 10.1016/j.heliyon.2023.e22091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 10/30/2023] [Accepted: 11/03/2023] [Indexed: 12/05/2023] Open
Abstract
This study explores the therapeutic potential of targeting CXCR2 in patients afflicted with ponatinib-resistant chronic myeloid leukemia (CML). Ponatinib, a third-generation tyrosine kinase inhibitor (TKI), was initially designed for treating patients with CML harboring the T315I mutation. However, resistance or intolerance issues may lead to treatment discontinuation. Additionally, TKIs have exhibited limitations in eradicating quiescent CML stem cells. Our investigation reveals the activation of CXC chemokine receptor 2 (CXCR2) signaling in response to chemotherapeutic stress. Treatment with the CXCR2 antagonist, SB225002, effectively curtails cell proliferation and triggers apoptosis in ponatinib-resistant CML cells. SB225002 intervention also results in the accumulation of reactive oxygen species and disruption of mitochondrial function, phenomena associated with TKI chemoresistance and apoptosis. Furthermore, we demonstrate that activated CXCR2 expression induces the activity of dipeptidylpeptidase Ⅳ (DPP4/CD26), a CML leukemic stem cell marker, and concomitantly inhibits the PI3K/Akt/mTOR pathway cascades. These findings underscore the novel role of CXCR2 in the regulation of not only ponatinib-resistant CML cells, but also CML leukemic stem cells. Consequently, our study proposes that targeting CXCR2 holds promise as a viable therapeutic strategy for addressing patients with CML grappling with ponatinib resistance.
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Affiliation(s)
- Ji-Hea Kim
- Institute of Stem Cell Research, Korea University College of Medicine, Seoul, South Korea
- Department of Biomedical Science, Graduate School of Medicine, Korea University, Seoul, South Korea
| | - Ka-Won Kang
- Department of Internal Medicine, Anam Hospital Korea University Medical Center, Seoul, South Korea
| | - Yong Park
- Department of Internal Medicine, Anam Hospital Korea University Medical Center, Seoul, South Korea
| | - Byung Soo Kim
- Department of Internal Medicine, Anam Hospital Korea University Medical Center, Seoul, South Korea
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22
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Li DJ, Zhong ZJ, Wang XL, Wei N, Zhao SJ, Shan TT, Liu YP, Yu YQ. Chemokine receptor CXCR2 in primary sensory neurons of trigeminal ganglion mediates orofacial itch. Front Mol Neurosci 2023; 16:1279237. [PMID: 37953876 PMCID: PMC10637378 DOI: 10.3389/fnmol.2023.1279237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 10/16/2023] [Indexed: 11/14/2023] Open
Abstract
The CXCR2 chemokine receptor is known to have a significant impact on the initiation and control of inflammatory processes. However, its specific involvement in the sensation of itch is not yet fully understood. In this study, we aimed to elucidate the function of CXCR2 in the trigeminal ganglion (TG) by utilizing orofacial itch models induced by incision, chloroquine (CQ), and histamine. Our results revealed a significant up-regulation of CXCR2 mRNA and protein expressions in the primary sensory neurons of TG in response to itch stimuli. The CXCR2 inhibitor SB225002 resulted in notable decrease in CXCR2 protein expression and reduction in scratch behaviors. Distal infraorbital nerve (DION) microinjection of a specific shRNA virus inhibited CXCR2 expression in TG neurons and reversed itch behaviors. Additionally, the administration of the PI3K inhibitor LY294002 resulted in a decrease in the expressions of p-Akt, Akt, and CXCR2 in TG neurons, thereby mitigating pruritic behaviors. Collectively, we report that CXCR2 in the primary sensory neurons of trigeminal ganglion contributes to orofacial itch through the PI3K/Akt signaling pathway. These observations highlight the potential of molecules involved in the regulation of CXCR2 as viable therapeutic targets for the treatment of itch.
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Affiliation(s)
- Dong-Jin Li
- College of Life Sciences, Northwest University, Xi’an, China
- Institute for Biomedical Sciences of Pain, Tangdu Hospital, Air Force Medical University, Xi’an, China
- Key Laboratory of Brain Stress and Behavior, People’s Liberation Army, Xi’an, China
| | - Zhen-Juan Zhong
- Institute for Biomedical Sciences of Pain, Tangdu Hospital, Air Force Medical University, Xi’an, China
- Key Laboratory of Brain Stress and Behavior, People’s Liberation Army, Xi’an, China
| | - Xiao-Liang Wang
- Institute for Biomedical Sciences of Pain, Tangdu Hospital, Air Force Medical University, Xi’an, China
- Key Laboratory of Brain Stress and Behavior, People’s Liberation Army, Xi’an, China
| | - Na Wei
- Institute for Biomedical Sciences of Pain, Tangdu Hospital, Air Force Medical University, Xi’an, China
- Key Laboratory of Brain Stress and Behavior, People’s Liberation Army, Xi’an, China
| | - Si-Jia Zhao
- Institute for Biomedical Sciences of Pain, Tangdu Hospital, Air Force Medical University, Xi’an, China
- Key Laboratory of Brain Stress and Behavior, People’s Liberation Army, Xi’an, China
| | - Ting-Ting Shan
- Institute for Biomedical Sciences of Pain, Tangdu Hospital, Air Force Medical University, Xi’an, China
- Key Laboratory of Brain Stress and Behavior, People’s Liberation Army, Xi’an, China
| | - Ya-Ping Liu
- Institute for Biomedical Sciences of Pain, Tangdu Hospital, Air Force Medical University, Xi’an, China
- Key Laboratory of Brain Stress and Behavior, People’s Liberation Army, Xi’an, China
| | - Yao-Qing Yu
- College of Life Sciences, Northwest University, Xi’an, China
- Institute for Biomedical Sciences of Pain, Tangdu Hospital, Air Force Medical University, Xi’an, China
- Key Laboratory of Brain Stress and Behavior, People’s Liberation Army, Xi’an, China
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23
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Sitaru S, Budke A, Bertini R, Sperandio M. Therapeutic inhibition of CXCR1/2: where do we stand? Intern Emerg Med 2023; 18:1647-1664. [PMID: 37249756 PMCID: PMC10227827 DOI: 10.1007/s11739-023-03309-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 05/10/2023] [Indexed: 05/31/2023]
Abstract
Mounting experimental evidence from in vitro and in vivo animal studies points to an essential role of the CXCL8-CXCR1/2 axis in neutrophils in the pathophysiology of inflammatory and autoimmune diseases. In addition, the pathogenetic involvement of neutrophils and the CXCL8-CXCR1/2 axis in cancer progression and metastasis is increasingly recognized. Consequently, therapeutic targeting of CXCR1/2 or CXCL8 has been intensively investigated in recent years using a wide array of in vitro and animal disease models. While a significant benefit for patients with unwanted neutrophil-mediated inflammatory conditions may be expected from a potential clinical use of inhibitors, their use in severe infections or sepsis might be problematic and should be carefully and thoroughly evaluated in animal models and clinical trials. Translating the approaches using inhibitors of the CXCL8-CXCR1/2 axis to cancer therapy is definitively a new and promising research avenue, which parallels the ongoing efforts to clearly define the involvement of neutrophils and the CXCL8-CXCR1/2 axis in neoplastic diseases. Our narrative review summarizes the current literature on the activation and inhibition of these receptors in neutrophils, key inhibitor classes for CXCR2 and the therapeutic relevance of CXCR2 inhibition focusing here on gastrointestinal diseases.
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Affiliation(s)
- Sebastian Sitaru
- Institute of Cardiovascular Physiology and Pathophysiology, Walter Brendel Center of Experimental Medicine, University Hospital, Ludwig-Maximilian University, Großhaderner Str. 9, Planegg-Martinsried, 82152, Munich, Germany
- Department of Dermatology and Allergy, School of Medicine, Technical University of Munich, Munich, Germany
| | - Agnes Budke
- Institute of Cardiovascular Physiology and Pathophysiology, Walter Brendel Center of Experimental Medicine, University Hospital, Ludwig-Maximilian University, Großhaderner Str. 9, Planegg-Martinsried, 82152, Munich, Germany
| | | | - Markus Sperandio
- Institute of Cardiovascular Physiology and Pathophysiology, Walter Brendel Center of Experimental Medicine, University Hospital, Ludwig-Maximilian University, Großhaderner Str. 9, Planegg-Martinsried, 82152, Munich, Germany.
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24
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Hayashi M, Ikenaga N, Nakata K, Luo H, Zhong P, Date S, Oyama K, Higashijima N, Kubo A, Iwamoto C, Torata N, Abe T, Yamada Y, Ohuchida K, Oda Y, Nakamura M. Intratumor Fusobacterium nucleatum promotes the progression of pancreatic cancer via the CXCL1- CXCR2 axis. Cancer Sci 2023; 114:3666-3678. [PMID: 37438965 PMCID: PMC10475786 DOI: 10.1111/cas.15901] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 06/13/2023] [Accepted: 06/19/2023] [Indexed: 07/14/2023] Open
Abstract
Intratumor bacteria modify the tumor immune microenvironment and influence outcomes of various tumors. Periodontal pathogen Fusobacterium nucleatum has been detected in pancreatic cancer tissues and is associated with poor prognosis. However, it remains unclear how F. nucleatum affects pancreatic cancer. Here, we compared clinical features with F. nucleatum colonization in pancreatic cancer tissues. F. nucleatum was detected in 15.5% (13/84) of pancreatic cancer patients. The tumor size was significantly larger in the F. nucleatum-positive group than in the negative group. To clarify the biological effect of intratumor F. nucleatum on pancreatic cancer progression, we performed migration/invasion assays and cytokine array analysis of cancer cells cocultured with F. nucleatum. F. nucleatum promoted CXCL1 secretion from pancreatic cancer cells, leading to cancer progression through autocrine signaling. Intratumor F. nucleatum suppressed tumor-infiltrating CD8+ T cells by recruiting myeloid-derived suppressor cells (MDSCs) to the tumor in an F. nucleatum-injected subcutaneous pancreatic cancer mouse model, resulting in tumor progression. Furthermore, tumor growth accelerated by F. nucleatum was suppressed by MDSC depletion or cytokine inhibitors. Intratumor F. nucleatum promoted pancreatic cancer progression through autocrine and paracrine mechanisms of the CXCL1-CXCR2 axis. Blockade of the CXCL1-CXCR2 axis may be a novel therapeutic approach for patients with intratumor F. nucleatum-positive pancreatic cancer.
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Affiliation(s)
- Masataka Hayashi
- Department of Surgery and Oncology, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Naoki Ikenaga
- Department of Surgery and Oncology, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Kohei Nakata
- Department of Surgery and Oncology, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Haizhen Luo
- Department of Surgery and Oncology, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - PingShan Zhong
- Department of Surgery and Oncology, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Satomi Date
- Department of Surgery and Oncology, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Koki Oyama
- Department of Surgery and Oncology, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Nobuhiro Higashijima
- Department of Surgery and Oncology, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Akihiro Kubo
- Department of Surgery and Oncology, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Chika Iwamoto
- Department of Surgery and Oncology, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Nobuhiro Torata
- Department of Surgery and Oncology, Graduate School of Medical Sciences, Bachelor of Health ScienceKyushu UniversityFukuokaJapan
| | - Toshiya Abe
- Department of Surgery and Oncology, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Yutaka Yamada
- Department of Anatomical Pathology, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Kenoki Ohuchida
- Department of Surgery and Oncology, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Yoshinao Oda
- Department of Anatomical Pathology, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Masafumi Nakamura
- Department of Surgery and Oncology, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
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Luo X. CXCR2 antagonism attenuates neuroinflammation after subarachnoid hemorrhage. J Stroke Cerebrovasc Dis 2023; 32:107266. [PMID: 37481938 DOI: 10.1016/j.jstrokecerebrovasdis.2023.107266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 07/11/2023] [Accepted: 07/17/2023] [Indexed: 07/25/2023] Open
Abstract
OBJECTIVES Overactivation of neuroinflammation can worsen the prognosis of subarachnoid hemorrhage (SAH) patients. CXCR2 is a widely expressed G protein-coupled receptor that participates in the regulation of inflammation, indicating a potential role of CXCR2 in SAH. MATERIALS AND METHODS Herein, we examined the expression pattern of CXCR2 in the ipsilateral brain tissue of SAH mice. Then, we evaluated the effects of CXCR2 antagonist on neuroinflammation and neurological function after SAH. RESULTS Western blotting and immunohistochemistry revealed that CXCR2 expression was upregulated following SAH. Our results demonstrated that treatment with SB225002 inhibited inflammatory cytokine (IL-1β, IL-6, TNF-α, MCP-1) production in the brain and cerebrospinal fluid (CSF) following SAH. Our further findings confirmed that treatment with SB225002 ameliorated astrocytosis and microgliosis after SAH. Interestingly, SB225002 significantly improved neurological impairment after SAH. CONCLUSIONS Altogether, these results suggest that pharmacologically targeting CXCR2 may be an effective disease-modifying treatment for SAH.
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Affiliation(s)
- Xiaolin Luo
- Department of Neurosurgery, Chengdu Second People's Hospital, No. 10, Qingyun South Street, Chengdu 610021, Sichuan, China.
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26
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Huang C, Chen B, Wang X, Xu J, Sun L, Wang D, Zhao Y, Zhou C, Gao Q, Wang Q, Chen Z, Wang M, Zhang X, Xu W, Shen B, Zhu W. Gastric cancer mesenchymal stem cells via the CXCR2/HK2/PD-L1 pathway mediate immunosuppression. Gastric Cancer 2023; 26:691-707. [PMID: 37300724 DOI: 10.1007/s10120-023-01405-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 05/25/2023] [Indexed: 06/12/2023]
Abstract
BACKGROUND Anti-PD-1 immunotherapy has emerged as an important therapeutic modality in advanced gastric cancer (GC). However, drug resistance frequently develops, limiting its effectiveness. METHODS The role of gastric cancer mesenchymal stem cells (GCMSCs) in anti-PD-1 resistance was evaluated in vivo in NPGCD34+ or NCGPBMC xenograft mouse model. In addition, we investigated CD8+T cell infiltration and effector function by spectral cytometry and IHC. The effects of GCMSCs conditional medium (GCMSC-CM) on GC cell lines were characterized at the level of the proteome, secretome using western blot, and ELISA assays. RESULTS We reported that GCMSCs mediated tolerance mechanisms contribute to tumor immunotherapy tolerance. GCMSC-CM attenuated the antitumor activity of PD-1 antibody and inhibited immune response in humanized mouse model. In GC cells under serum deprivation and hypoxia, GCMSC-CM promoted GC cells proliferation via upregulating PD-L1 expression. Mechanistically, GCMSC-derived IL-8 and AKT-mediated phosphorylation facilitated HK2 nuclear localization. Phosphorylated-HK2 promoted PD-L1 transcription by binding to HIF-1α. What is more, GCMSC-CM also induced lactate overproduction in GC cells in vitro and xenograft tumors in vivo, leading to impaired function of CD8+ T cells. Furthermore, CXCR1/2 receptor depletion, CXCR2 receptor antagonist AZD5069 and IL-8 neutralizing antibody application also significantly reversed GCMSCs mediated immunosuppression, restoring the antitumor capacity of PD-1 antibody. CONCLUSIONS Our findings reveal that blocking GCMSCs-derived IL-8/CXCR2 pathway decreasing PD-L1 expression and lactate production, improving antitumor efficacy of anti-PD-1 immunotherapy, may be of value for the treatment of advanced gastric carcinoma.
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Affiliation(s)
- Chao Huang
- School of Medicine, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu, China
| | - Bin Chen
- School of Medicine, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu, China
- Department of Clinical Laboratory, Affiliated Hospital of Jining Medical University, Jining, Shandong, China
| | - Xin Wang
- Department of Oncology, Jiangsu Cancer Hospital and Jiangsu Institute of Cancer Research and, The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Juan Xu
- Department of Laboratory Medicine, Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou, Jiangsu, China
| | - Li Sun
- School of Medicine, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu, China
- Department of Clinical Laboratory, Kunshan First People's Hospital, Kunshan, China
| | - Deqiang Wang
- Department of Oncology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Yuanyuan Zhao
- School of Medicine, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu, China
| | - Chenglin Zhou
- Department of Laboratory Medicine, Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou, Jiangsu, China
| | - Qiuzhi Gao
- School of Medicine, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu, China
| | - Qianqian Wang
- School of Medicine, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu, China
| | - Zhihong Chen
- Department of Gastrointestinal Surgery, Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Mei Wang
- School of Medicine, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu, China
| | - Xu Zhang
- School of Medicine, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu, China
| | - Wenrong Xu
- School of Medicine, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu, China
| | - Bo Shen
- Department of Oncology, Jiangsu Cancer Hospital and Jiangsu Institute of Cancer Research and, The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Wei Zhu
- School of Medicine, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu, China.
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Korbecki J, Bosiacki M, Chlubek D, Baranowska-Bosiacka I. Bioinformatic Analysis of the CXCR2 Ligands in Cancer Processes. Int J Mol Sci 2023; 24:13287. [PMID: 37686093 PMCID: PMC10487711 DOI: 10.3390/ijms241713287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 08/23/2023] [Accepted: 08/24/2023] [Indexed: 09/10/2023] Open
Abstract
Human CXCR2 has seven ligands, i.e., CXCL1, CXCL2, CXCL3, CXCL5, CXCL6, CXCL7, and CXCL8/IL-8-chemokines with nearly identical properties. However, no available study has compared the contribution of all CXCR2 ligands to cancer progression. That is why, in this study, we conducted a bioinformatic analysis using the GEPIA, UALCAN, and TIMER2.0 databases to investigate the role of CXCR2 ligands in 31 different types of cancer, including glioblastoma, melanoma, and colon, esophageal, gastric, kidney, liver, lung, ovarian, pancreatic, and prostate cancer. We focused on the differences in the regulation of expression (using the Tfsitescan and miRDB databases) and analyzed mutation types in CXCR2 ligand genes in cancers (using the cBioPortal). The data showed that the effect of CXCR2 ligands on prognosis depends on the type of cancer. CXCR2 ligands were associated with EMT, angiogenesis, recruiting neutrophils to the tumor microenvironment, and the count of M1 macrophages. The regulation of the expression of each CXCR2 ligand was different and, thus, each analyzed chemokine may have a different function in cancer processes. Our findings suggest that each type of cancer has a unique pattern of CXCR2 ligand involvement in cancer progression, with each ligand having a unique regulation of expression.
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Affiliation(s)
- Jan Korbecki
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University in Szczecin, Powstańców Wlkp. 72, 70-111 Szczecin, Poland; (J.K.); (M.B.); (D.C.)
- Department of Anatomy and Histology, Collegium Medicum, University of Zielona Góra, Zyty 28 St., 65-046 Zielona Góra, Poland
| | - Mateusz Bosiacki
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University in Szczecin, Powstańców Wlkp. 72, 70-111 Szczecin, Poland; (J.K.); (M.B.); (D.C.)
- Department of Functional Diagnostics and Physical Medicine, Faculty of Health Sciences, Pomeranian Medical University in Szczecin, Żołnierska Str. 54, 71-210 Szczecin, Poland
| | - Dariusz Chlubek
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University in Szczecin, Powstańców Wlkp. 72, 70-111 Szczecin, Poland; (J.K.); (M.B.); (D.C.)
| | - Irena Baranowska-Bosiacka
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University in Szczecin, Powstańców Wlkp. 72, 70-111 Szczecin, Poland; (J.K.); (M.B.); (D.C.)
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Ji HZ, Chen L, Ren M, Li S, Liu TY, Chen HJ, Yu HH, Sun Y. CXCL8 Promotes Endothelial-to-Mesenchymal Transition of Endothelial Cells and Protects Cells from Erastin-Induced Ferroptosis via CXCR2-Mediated Activation of the NF-κB Signaling Pathway. Pharmaceuticals (Basel) 2023; 16:1210. [PMID: 37765018 PMCID: PMC10536478 DOI: 10.3390/ph16091210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/07/2023] [Accepted: 08/18/2023] [Indexed: 09/29/2023] Open
Abstract
CXCL8-CXCR1/CXCR2 signaling pathways might form complex crosstalk among different cell types within the ovarian tumor microenvironment, thereby modulating the behaviors of different cells. This study aimed to investigate the expression pattern of CXCL8 in the ovarian tumor microenvironment and its impact on both endothelial-to-mesenchymal transition (EndMT) and ferroptosis of endothelial cells. The human monocytic cell line THP-1 and the human umbilical vein endothelial cell line PUMC-HUVEC-T1 were used to conduct in vitro studies. Erastin was used to induce ferroptosis. Results showed that tumor-associated macrophages are the major source of CXCL8 in the tumor microenvironment. CXCL8 treatment promoted the nucleus entrance of NF-κB p65 and p65 phosphorylation via CXCR2 in endothelial cells, suggesting activated NF-κB signaling. Via the NF-κB signaling pathway, CXCL8 enhanced TGF-β1-induced EndMT of PUMC-HUVEC-T1 cells and elevated their expression of SLC7A11 and GPX4. These trends were drastically weakened in groups with CXCR2 knockdown or SB225002 treatment. TPCA-1 reversed CXCL8-induced upregulation of SLC7A11 and GPX4. CXCL8 protected endothelial cells from erastin-induced ferroptosis. However, these protective effects were largely canceled when CXCR2 was knocked down. In summary, CXCL8 can activate the NF-κB signaling pathway in endothelial cells in a CXCR2-dependent manner. The CXCL8-CXCR2/NF-κB axis can enhance EndMT and activate SLC7A11 and GPX4 expression, protecting endothelial cells from ferroptosis.
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Affiliation(s)
- Hai-zhou Ji
- Department of Gynecology, Clinical Oncology School of Fujian Medical University, Fujian Cancer Hospital, Fuzhou 350014, China; (H.-z.J.); (L.C.); (S.L.); (T.-y.L.); (H.-j.C.); (H.-h.Y.)
| | - Li Chen
- Department of Gynecology, Clinical Oncology School of Fujian Medical University, Fujian Cancer Hospital, Fuzhou 350014, China; (H.-z.J.); (L.C.); (S.L.); (T.-y.L.); (H.-j.C.); (H.-h.Y.)
| | - Mi Ren
- Department of Oncological Nursing, Clinical Oncology School of Fujian Medical University, Fujian Cancer Hospital, Fuzhou 350014, China;
| | - Sang Li
- Department of Gynecology, Clinical Oncology School of Fujian Medical University, Fujian Cancer Hospital, Fuzhou 350014, China; (H.-z.J.); (L.C.); (S.L.); (T.-y.L.); (H.-j.C.); (H.-h.Y.)
| | - Tong-yu Liu
- Department of Gynecology, Clinical Oncology School of Fujian Medical University, Fujian Cancer Hospital, Fuzhou 350014, China; (H.-z.J.); (L.C.); (S.L.); (T.-y.L.); (H.-j.C.); (H.-h.Y.)
| | - Hong-ju Chen
- Department of Gynecology, Clinical Oncology School of Fujian Medical University, Fujian Cancer Hospital, Fuzhou 350014, China; (H.-z.J.); (L.C.); (S.L.); (T.-y.L.); (H.-j.C.); (H.-h.Y.)
| | - Hui-hui Yu
- Department of Gynecology, Clinical Oncology School of Fujian Medical University, Fujian Cancer Hospital, Fuzhou 350014, China; (H.-z.J.); (L.C.); (S.L.); (T.-y.L.); (H.-j.C.); (H.-h.Y.)
| | - Yang Sun
- Department of Gynecology, Clinical Oncology School of Fujian Medical University, Fujian Cancer Hospital, Fuzhou 350014, China; (H.-z.J.); (L.C.); (S.L.); (T.-y.L.); (H.-j.C.); (H.-h.Y.)
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29
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La Cognata V, D’Amico AG, Maugeri G, Morello G, Guarnaccia M, Magrì B, Aronica E, D’Agata V, Cavallaro S. CXCR2 Is Deregulated in ALS Spinal Cord and Its Activation Triggers Apoptosis in Motor Neuron-Like Cells Overexpressing hSOD1-G93A. Cells 2023; 12:1813. [PMID: 37508478 PMCID: PMC10377984 DOI: 10.3390/cells12141813] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 05/08/2023] [Accepted: 07/06/2023] [Indexed: 07/30/2023] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a multifactorial neurodegenerative disease characterized by progressive depletion of motor neurons (MNs). Recent evidence suggests a role in ALS pathology for the C-X-C motif chemokine receptor 2 (CXCR2), whose expression was found increased at both mRNA and protein level in cortical neurons of sporadic ALS patients. Previous findings also showed that the receptor inhibition is able to prevent iPSC-derived MNs degeneration in vitro and improve neuromuscular function in SOD1-G93A mice. Here, by performing transcriptional analysis and immunofluorescence studies, we detailed the increased expression and localization of CXCR2 and its main ligand CXCL8 in the human lumbar spinal cord of sporadic ALS patients. We further investigated the functional role of CXCR2/ligands axis in NSC-34 motor neuron-like cells expressing human wild-type (WT) or mutant (G93A) SOD1. A significant expression of CXCR2 was found in doxycycline-induced G93A-SOD1-expressing cells, but not in WT cells. In vitro assays showed CXCR2 activation by GROα and MIP2α, two murine endogenous ligands and functional homologs of CXCL8, reduces cellular viability and triggers apoptosis in a dose dependent manner, while treatment with reparixin, a non-competitive allosteric CXCR2 inhibitor, effectively counteracts GROα and MIP2α toxicity, significantly inhibiting the chemokine-induced cell death. Altogether, data further support a role of CXCR2 axis in ALS etiopathogenesis and confirm its pharmacological modulation as a candidate therapeutic strategy.
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Affiliation(s)
- Valentina La Cognata
- Institute for Biomedical Research and Innovation, National Research Council, 95126 Catania, Italy
| | - Agata Grazia D’Amico
- Section of Human Anatomy and Histology, Department of Biomedical and Biotechnological Sciences, University of Catania, 95123 Catania, Italy
| | - Grazia Maugeri
- Section of Human Anatomy and Histology, Department of Biomedical and Biotechnological Sciences, University of Catania, 95123 Catania, Italy
| | - Giovanna Morello
- Institute for Biomedical Research and Innovation, National Research Council, 95126 Catania, Italy
| | - Maria Guarnaccia
- Institute for Biomedical Research and Innovation, National Research Council, 95126 Catania, Italy
| | - Benedetta Magrì
- Section of Human Anatomy and Histology, Department of Biomedical and Biotechnological Sciences, University of Catania, 95123 Catania, Italy
| | - Eleonora Aronica
- Department of (Neuro) Pathology, Amsterdam UMC, University of Amsterdam, Amsterdam Neuroscience, Meibergdreef 9, 1105 Amsterdam, The Netherlands
| | - Velia D’Agata
- Section of Human Anatomy and Histology, Department of Biomedical and Biotechnological Sciences, University of Catania, 95123 Catania, Italy
| | - Sebastiano Cavallaro
- Institute for Biomedical Research and Innovation, National Research Council, 95126 Catania, Italy
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30
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Chen C, Lin LY, Chen JW, Chang TT. CXCL5 suppression recovers neovascularization and accelerates wound healing in diabetes mellitus. Cardiovasc Diabetol 2023; 22:172. [PMID: 37420254 PMCID: PMC10329364 DOI: 10.1186/s12933-023-01900-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Accepted: 06/22/2023] [Indexed: 07/09/2023] Open
Abstract
BACKGROUND Higher chemokine C-X-C motif ligand 5 (CXCL5) level was observed in type 2 diabetes mellitus (DM) patients; however, its role in diabetic vasculopathy was not clarified. This study aimed to explore the impacts and mechanistic insights of CXCL5 in neovasculogenesis and wound healing in DM. METHODS Endothelial progenitor cells (EPCs) and human aortic endothelial cells (HAECs) were used in vitro. Streptozotocin-induced diabetic mice and Leprdb/JNarl mice were used as type 1 and type 2 DM models. Moreover, CXCL5 knockout mice were used to generate diabetic mice. Hindlimb ischemia surgery, aortic ring assays, matrigel plug assay, and wound healing assay were conducted. RESULTS CXCL5 concentrations were increased in plasma and EPCs culture medium from type 2 DM patients. CXCL5 neutralizing antibody upregulated vascular endothelial growth factor (VEGF)/stromal cell-derived factor-1 (SDF-1) and promoted cell function in EPCs from type 2 DM patients and high glucose-treated EPCs from non-DM subjects as well as HAECs. CXCL5 directly up-regulated interleukin (IL)-1β/IL-6/tumor necrosis factor-α and down-regulated VEGF/SDF-1 via ERK/p65 activation through chemokine C-X-C motif receptor 2 (CXCR2). CXCL5 neutralizing antibody recovered the blood flow after hindlimb ischemia, increased circulating EPC number, and enhanced VEGF and SDF-1 expression in ischemic muscle. CXCL5 suppression promoted neovascularization and wound healing in different diabetic animal models. The above observation could also be seen in streptozotocin-induced CXCL5 knockout diabetic mice. CONCLUSIONS CXCL5 suppression could improve neovascularization and wound healing through CXCR2 in DM. CXCL5 may be regarded as a potential therapeutic target for vascular complications of DM.
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Affiliation(s)
- Ching Chen
- Department and Institute of Pharmacology, National Yang Ming Chiao Tung University, Taipei, Taiwan
- School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Liang-Yu Lin
- School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Division of Endocrinology and Metabolism, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Jaw-Wen Chen
- Department and Institute of Pharmacology, National Yang Ming Chiao Tung University, Taipei, Taiwan
- School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Healthcare and Services Center, Taipei Veterans General Hospital, Taipei, Taiwan
- Division of Cardiology, Department of Medicine, Taipei Medical University Hospital, Taipei, Taiwan
- Cardiovascular Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Cardiovascular Research Center, Taipei Medical University, Taipei, Taiwan
| | - Ting-Ting Chang
- Department and Institute of Pharmacology, National Yang Ming Chiao Tung University, Taipei, Taiwan
- School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Biomedical Industry Ph.D. Program, National Yang Ming Chiao Tung University, Taipei, Taiwan
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31
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Liu CZ, Liu XB, Sun J, Yu CQ, Yao JC, Liu Z, Hao JC. IL-8-induced CXCR2 down-regulation in circulating monocytes in hepatocellular carcinoma is partially dependent on MAGL. BMC Cancer 2023; 23:626. [PMID: 37403022 DOI: 10.1186/s12885-023-11109-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 06/24/2023] [Indexed: 07/06/2023] Open
Abstract
BACKGROUND CXC-chemokine receptor 2 (CXCR2) expression was found to be down-regulated on circulating monocytes of cancer patients. Here, we analyze the percentage of CD14+CXCR2+ monocyte subsets in hepatocellular carcinoma (HCC) patients, and investigate the mechanisms that regulate CXCR2 surface expression on monocytes and its biological function. METHODS Flow cytometry was used to analyze the proportion of the CD14+CXCR2+ subset from the total circulating monocytes of HCC patients. Interleukin 8 (IL-8) levels were measured from serum and ascites, and their correlation with the CD14+CXCR2+ monocyte subset proportion was calculated. THP-1 cells were cultured in vitro and treated with recombinant human IL-8 and CXCR2 surface expression was analyzed. CXCR2 was knocked down to examine how it affects the antitumor activity of monocytes. Finally, a monoacylglycerol lipase (MAGL) inhibitor was added to analyze its effect on CXCR2 expression. RESULTS A decrease in the proportion of the CD14+CXCR2+ monocyte subset was observed in HCC patients compared with healthy controls. CXCR2+ monocyte subset proportion was associated with the AFP value, TNM stage, and liver function. Overexpression of IL-8 was observed in the serum and ascites of HCC patients, and negatively correlated with CXCR2+ monocyte proportion. IL-8 decreased CXCR2 expression in THP-1 cells, contributing to decreased antitumor activity toward HCC cells. MAGL expression in THP-1 cells was up-regulated after IL-8 treatment, and the MAGL inhibitor partially reversed the effects of IL-8 on CXCR2 expression. CONCLUSIONS Overexpression of IL-8 drives CXCR2 down-regulation on circulating monocytes of HCC patients, which could be partially reversed by a MAGL inhibitor.
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Affiliation(s)
- Chong Zhong Liu
- Department of Hepatobiliary Surgery, The Second Hospital, Cheeloo College of Medicine, Shandong University, 247 Beiyuan Street, Jinan, Shandong, 250033, PR China
| | - Xing Bao Liu
- Department of Hepatobiliary Surgery, Feixian People's Hospital, 71 Jiankang Road, Feixian, 273499, PR China
| | - Jun Sun
- Department of Hepatobiliary Surgery, The Second Hospital, Cheeloo College of Medicine, Shandong University, 247 Beiyuan Street, Jinan, Shandong, 250033, PR China
| | - Chao Qun Yu
- Department of Hepatobiliary Surgery, The Second Hospital, Cheeloo College of Medicine, Shandong University, 247 Beiyuan Street, Jinan, Shandong, 250033, PR China
| | - Jing Chun Yao
- State Key Laboratory of Generic Manufacture Technology of Chinese Traditional Medicine, Lunan Pharmaceutical Group Co. Ltd., 209 Hongqi Road, Linyi, 276006, PR China
| | - Zhong Liu
- State Key Laboratory of Generic Manufacture Technology of Chinese Traditional Medicine, Lunan Pharmaceutical Group Co. Ltd., 209 Hongqi Road, Linyi, 276006, PR China.
| | - Jing Cheng Hao
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, 250100, PR China.
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Sordi V, Monti P, Lampasona V, Melzi R, Pellegrini S, Keymeulen B, Gillard P, Linn T, Bosi E, Rose L, Pozzilli P, Giorgino F, Cossu E, Piemonti L. Post hoc analysis of a randomized, double-blind, prospective trial evaluating a CXCR1/2 inhibitor in new-onset type 1 diabetes: endo-metabolic features at baseline identify a subgroup of responders. Front Endocrinol (Lausanne) 2023; 14:1175640. [PMID: 37409229 PMCID: PMC10319139 DOI: 10.3389/fendo.2023.1175640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 05/30/2023] [Indexed: 07/07/2023] Open
Abstract
Aim In a recent randomized, multicenter trial (NCT02814838) a short-term anti-inflammatory treatment with ladarixin (LDX; an inhibitor of the CXCR1/2 chemokine receptors) did not show benefit on preserving residual beta cell function in new-onset type 1 diabetes. We present a post hoc analysis of trial patients in the predefined subgroup analysis developed according to baseline daily insulin requirement (DIR) tertiles. Method A double-blind, randomized (2:1), placebo-controlled study was conducted in 45 men and 31 women (aged 18-46 years) within 100 days of the first insulin administration. Patients received LDX (400 mg twice daily) for three cycles of 14 days on/14 days off, or placebo. The primary endpoint was the area under the curve for C-peptide [AUC (0-120 min)] in response to a 2-h mixed meal tolerance test (MMTT) at week 13 ± 1. Seventy-five patients completed the week 13 MMTT and were divided into three groups according to the DIR tertiles: lower, ≤ 0.23U/kg/die (n = 25); middle, 0.24-0.40 U/kg/die (n = 24); upper, ≥ 0.41 U/kg/die (n = 26). Results When considering the patients in the upper tertile (HIGH-DIR), C-peptide AUC (0-120 min) at 13 weeks was higher in the LDX group (n = 16) than in the placebo (n = 10) group [difference: 0.72 nmol/L (95% CI 0.9-1.34), p = 0.027]. This difference reduced over time (0.71 nmol/L at 26 weeks, p = 0.04; 0.42 nmol/L at 52 weeks, p = 0.29), while it has never been significant at any time in patients in the lower and/or middle tertile (LOW-DIR). We characterized at baseline the HIGH-DIR and found that endo-metabolic (HOMA-B, adiponectin, and glucagon-to-C-peptide ratio) and immunologic (chemokine (C-C motif) ligand 2 (CCL2)/monocyte chemoattractant protein 1 (MCP1) and Vascular Endothelial Growth Factor (VEGF)) features distinguished this group from LOW-DIR. Conclusion While LDX did not prevent the progressive loss of beta-cell function in the majority of treated subjects, the post hoc analysis suggests that it could work in subjects with HIGH-DIR at baseline. As we found differences in endo-metabolic and immunologic parameters within this subgroup, this generates the hypothesis that the interactions between host factors and drug action can contribute to its efficacy. Further research is needed to evaluate this hypothesis.
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Affiliation(s)
- Valeria Sordi
- Diabetes Research Institute, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Paolo Monti
- Diabetes Research Institute, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Vito Lampasona
- Diabetes Research Institute, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Raffaella Melzi
- Diabetes Research Institute, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Silvia Pellegrini
- Diabetes Research Institute, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Bart Keymeulen
- The Belgian Diabetes Registry, Academic Hospital and Diabetes Research Centre, Vrije Universiteit Brussel, Brussels, Belgium
| | - Pieter Gillard
- Department of Endocrinology, University Hospitals Leuven‐Katholieke Universiteit Leuven, Leuven, Belgium
| | - Thomas Linn
- Clinical Research Unit, Medical Clinic and Polyclinic III, Center of Internal Medicine, Justus Liebig University, Giessen, Germany
| | - Emanuele Bosi
- Diabetes Research Institute, IRCCS Ospedale San Raffaele, Milan, Italy
- Università Vita-Salute San Raffaele, Milan, Italy
| | - Ludger Rose
- Zentrum für Diabetes und Gefäßerkrankungen Münster, Munster, Germany
| | - Paolo Pozzilli
- Department of Endocrinology and Metabolic Diseases, University Campus Bio‐Medico, Rome, Italy
| | - Francesco Giorgino
- Department of Emergency and Organ Transplantation, Section of Internal Medicine, Endocrinology, Andrology and Metabolic Diseases, University of Bari Aldo Moro, Bari, Italy
| | - Efisio Cossu
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Lorenzo Piemonti
- Diabetes Research Institute, IRCCS Ospedale San Raffaele, Milan, Italy
- Università Vita-Salute San Raffaele, Milan, Italy
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Yang J, Bergdorf K, Yan C, Luo W, Chen SC, Ayers GD, Liu Q, Liu X, Boothby M, Weiss VL, Groves SM, Oleskie AN, Zhang X, Maeda DY, Zebala JA, Quaranta V, Richmond A. CXCR2 expression during melanoma tumorigenesis controls transcriptional programs that facilitate tumor growth. Mol Cancer 2023; 22:92. [PMID: 37270599 PMCID: PMC10239119 DOI: 10.1186/s12943-023-01789-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 05/16/2023] [Indexed: 06/05/2023] Open
Abstract
BACKGROUND Though the CXCR2 chemokine receptor is known to play a key role in cancer growth and response to therapy, a direct link between expression of CXCR2 in tumor progenitor cells during induction of tumorigenesis has not been established. METHODS To characterize the role of CXCR2 during melanoma tumorigenesis, we generated tamoxifen-inducible tyrosinase-promoter driven BrafV600E/Pten-/-/Cxcr2-/- and NRasQ61R/INK4a-/-/Cxcr2-/- melanoma models. In addition, the effects of a CXCR1/CXCR2 antagonist, SX-682, on melanoma tumorigenesis were evaluated in BrafV600E/Pten-/- and NRasQ61R/INK4a-/- mice and in melanoma cell lines. Potential mechanisms by which Cxcr2 affects melanoma tumorigenesis in these murine models were explored using RNAseq, mMCP-counter, ChIPseq, and qRT-PCR; flow cytometry, and reverse phosphoprotein analysis (RPPA). RESULTS Genetic loss of Cxcr2 or pharmacological inhibition of CXCR1/CXCR2 during melanoma tumor induction resulted in key changes in gene expression that reduced tumor incidence/growth and increased anti-tumor immunity. Interestingly, after Cxcr2 ablation, Tfcp2l1, a key tumor suppressive transcription factor, was the only gene significantly induced with a log2 fold-change greater than 2 in these three different melanoma models. CONCLUSIONS Here, we provide novel mechanistic insight revealing how loss of Cxcr2 expression/activity in melanoma tumor progenitor cells results in reduced tumor burden and creation of an anti-tumor immune microenvironment. This mechanism entails an increase in expression of the tumor suppressive transcription factor, Tfcp2l1, along with alteration in the expression of genes involved in growth regulation, tumor suppression, stemness, differentiation, and immune modulation. These gene expression changes are coincident with reduction in the activation of key growth regulatory pathways, including AKT and mTOR.
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Affiliation(s)
- J Yang
- TVHS Department of Veterans Affairs, Nashville, TN, 37212, USA
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN, 37240, USA
| | - K Bergdorf
- TVHS Department of Veterans Affairs, Nashville, TN, 37212, USA
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN, 37240, USA
| | - C Yan
- TVHS Department of Veterans Affairs, Nashville, TN, 37212, USA
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN, 37240, USA
| | - W Luo
- TVHS Department of Veterans Affairs, Nashville, TN, 37212, USA
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN, 37240, USA
| | - S C Chen
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN, 37203-1742, USA
| | - G D Ayers
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN, 37203-1742, USA
| | - Q Liu
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN, 37203-1742, USA
| | - X Liu
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN, 37203-1742, USA
| | - M Boothby
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - V L Weiss
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - S M Groves
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - A N Oleskie
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN, 37240, USA
| | - X Zhang
- Department of Genomic Medicine, MD Anderson Cancer Center, University of Texas, Houston, TX, 77030, USA
| | - D Y Maeda
- Syntrix Pharmaceuticals, Auburn, WA, 98001, USA
| | - J A Zebala
- Syntrix Pharmaceuticals, Auburn, WA, 98001, USA
| | - V Quaranta
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN, 37240, USA
- Department of Biochemistry, Vanderbilt University, TN, 37240, Nashville, USA
| | - A Richmond
- TVHS Department of Veterans Affairs, Nashville, TN, 37212, USA.
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN, 37240, USA.
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Jiang S, Liang J, Li W, Wang L, Song M, Xu S, Liu G, Du Q, Zhai D, Tang L, Yang Y, Zhang L, Zhang B. The role of CXCL1/ CXCR2 axis in neurological diseases. Int Immunopharmacol 2023; 120:110330. [PMID: 37247498 DOI: 10.1016/j.intimp.2023.110330] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 04/26/2023] [Accepted: 05/09/2023] [Indexed: 05/31/2023]
Abstract
The C-X-C chemokine ligand (CXCL) 1 and its receptor C-X-C chemokine receptor (CXCR) 2 are widely expressed in the peripheral nervous systems (PNS) and central nervous systems (CNS) and are involved in the development of inflammation and pain after various nerve injuries. Once a nerve is damaged, it affects not only the neuron itself but also lesions elsewhere in its dominant site. After the CXCL1/CXCR2 axis is activated, multiple downstream pathways can be activated, such as c-Raf/MAPK/AP-1, p-PKC-μ/p-ILK/NLRP3, JAK2/STAT3, TAK1/NF-κB, etc. These pathways in turn mediate cellular motility state or cell migration. CXCR2 is expressed on the surface of neutrophils and monocytes/macrophages. These cells can be recruited to the lesion through the CXCL1/CXCR2 axis to participate in the inflammatory response. The expression of CXCR2 in neurons can activate some pathways in neurons through the CXCL1/CXCR2 axis, thereby causing damage to neurons. CXCR2 is also expressed in astrocytes, and when CXCR2 activated, it increases the number of astrocytes but impairs their function. Since inflammation can occur at almost any site of injury, elucidating the mechanism of CXCL1/CXCR2 axis' influence on inflammation may provide a favorable target for clinical treatment. Therefore, this article reviews the research progress of the CXCL1/CXCR2 axis in neurological diseases, aiming to provide a more meaningful theoretical basis for the treatment of neurological diseases.
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Affiliation(s)
- Suli Jiang
- Department of Immunology, Medical College of Qingdao University, Qingdao, Shandong 266071, PR China
| | - Jie Liang
- Department of Immunology, Medical College of Qingdao University, Qingdao, Shandong 266071, PR China
| | - Wei Li
- Department of Immunology, Medical College of Qingdao University, Qingdao, Shandong 266071, PR China
| | - Luoyang Wang
- Department of Immunology, Medical College of Qingdao University, Qingdao, Shandong 266071, PR China
| | - Meiying Song
- Department of Immunology, Medical College of Qingdao University, Qingdao, Shandong 266071, PR China
| | - Shuo Xu
- Department of Immunology, Medical College of Qingdao University, Qingdao, Shandong 266071, PR China
| | - Guixian Liu
- Department of Immunology, Medical College of Qingdao University, Qingdao, Shandong 266071, PR China
| | - Qiaochu Du
- Department of Immunology, Medical College of Qingdao University, Qingdao, Shandong 266071, PR China
| | - Dongchang Zhai
- Department of Special Medicine, School of Basic Medical College, Qingdao University, Qingdao, Shandong 266071, PR China
| | - Lei Tang
- Department of Special Medicine, School of Basic Medical College, Qingdao University, Qingdao, Shandong 266071, PR China
| | - Yanyan Yang
- Department of Immunology, Medical College of Qingdao University, Qingdao, Shandong 266071, PR China
| | - Li Zhang
- Department of Immunology, Medical College of Qingdao University, Qingdao, Shandong 266071, PR China
| | - Bei Zhang
- Department of Immunology, Medical College of Qingdao University, Qingdao, Shandong 266071, PR China.
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Lenz M, Kiss A, Haider P, Salzmann M, Brekalo M, Krychtiuk KA, Hamza O, Huber K, Hengstenberg C, Podesser BK, Wojta J, Hohensinner PJ, Speidl WS. Short-term toll-like receptor 9 inhibition leads to left ventricular wall thinning after myocardial infarction. ESC Heart Fail 2023. [PMID: 37190856 PMCID: PMC10375131 DOI: 10.1002/ehf2.14403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 04/07/2023] [Accepted: 05/02/2023] [Indexed: 05/17/2023] Open
Abstract
AIMS Ischaemia-reperfusion injury (IRI) following myocardial infarction remains a challenging topic in acute cardiac care and consecutively arising heart failure represents a severe long-term consequence. The extent of neutrophil infiltration and neutrophil-mediated cellular damage are thought to be aggravating factors enhancing primary tissue injury. Toll-like receptor 9 was found to be involved in neutrophil activation as well as chemotaxis and may represent a target in modulating IRI, aspects we aimed to illuminate by pharmacological inhibition of the receptor. METHODS AND RESULTS Forty-nine male adult Sprague-Dawley rats were used. IRI was induced by occlusion of the left coronary artery and subsequent snare removal after 30 min. Oligonucleotide (ODN) 2088, a toll-like receptor 9 (TLR9) antagonist, control-ODN, or DNase, were administered at the time of reperfusion and over 24 h via a mini-osmotic pump. The hearts were harvested 24 h or 4 weeks after left coronary artery occlusion and immunohistochemical staining was performed. Echocardiography was done after 1 and 4 weeks to determine ventricular function. Inhibition of TLR9 by ODN 2088 led to left ventricular wall thinning (P = 0.003) in association with drastically enhanced neutrophil infiltration (P = 0.005) and increased markers of tissue damage. Additionally, an up-regulation of the chemotactic receptor CXCR2 (P = 0.046) was found after TLR9 inhibition. No such effects were observed in control-ODN or DNase-treated animals. We did not observe changes in monocyte content or subset distribution, hinting towards neutrophils as the primary mediators of the exerted tissue injury. CONCLUSIONS Our data indicate a TLR9-dependent, negative regulation of neutrophil infiltration. Blockage of TLR9 appears to prevent the down-regulation of CXCR2, followed by an uncontrolled migration of neutrophils towards the area of infarction and the exertion of disproportional tissue injury resulting in potential aneurysm formation. In comparison with previous studies conducted in TLR-/- mice, we deliberately chose a transient pharmacological inhibition of TLR9 to highlight effects occurring in the first 24 h following IRI.
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Affiliation(s)
- Max Lenz
- Department of Internal Medicine II, Division of Cardiology, Medical University of Vienna, Vienna, Austria
- Ludwig Boltzmann Institute for Cardiovascular Research, Vienna, Austria
| | - Attila Kiss
- Ludwig Boltzmann Institute for Cardiovascular Research, Vienna, Austria
- Center for Biomedical Research, Medical University of Vienna, Vienna, Austria
| | - Patrick Haider
- Department of Internal Medicine II, Division of Cardiology, Medical University of Vienna, Vienna, Austria
- Ludwig Boltzmann Institute for Cardiovascular Research, Vienna, Austria
| | - Manuel Salzmann
- Department of Internal Medicine II, Division of Cardiology, Medical University of Vienna, Vienna, Austria
| | - Mira Brekalo
- Department of Internal Medicine II, Division of Cardiology, Medical University of Vienna, Vienna, Austria
| | - Konstantin A Krychtiuk
- Department of Internal Medicine II, Division of Cardiology, Medical University of Vienna, Vienna, Austria
- Ludwig Boltzmann Institute for Cardiovascular Research, Vienna, Austria
| | - Ouafa Hamza
- Center for Biomedical Research, Medical University of Vienna, Vienna, Austria
| | - Kurt Huber
- 3rd Medical Department for Cardiology and Emergency Medicine, Faculty of Medicine, Wilhelminenhospital and Sigmund Freud University, Vienna, Austria
| | - Christian Hengstenberg
- Department of Internal Medicine II, Division of Cardiology, Medical University of Vienna, Vienna, Austria
| | - Bruno K Podesser
- Center for Biomedical Research, Medical University of Vienna, Vienna, Austria
| | - Johann Wojta
- Ludwig Boltzmann Institute for Cardiovascular Research, Vienna, Austria
- Core Facility Imaging, Medical University of Vienna, Vienna, Austria
| | - Philipp J Hohensinner
- Ludwig Boltzmann Institute for Cardiovascular Research, Vienna, Austria
- Center for Biomedical Research, Medical University of Vienna, Vienna, Austria
| | - Walter S Speidl
- Department of Internal Medicine II, Division of Cardiology, Medical University of Vienna, Vienna, Austria
- Ludwig Boltzmann Institute for Cardiovascular Research, Vienna, Austria
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Zhao H, Xu Y, Cui J. CXCR2 (rs3890158 and rs2230054) and CXCL4 (rs352008 and rs1801572) gene polymorphisms in patients with thoracic aortic aneurysm. Biotechnol Genet Eng Rev 2023:1-13. [PMID: 37154009 DOI: 10.1080/02648725.2023.2210011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
We aimed to explore the correlations of C-X-C motif chemokine receptor 2 (CXCR2) and chemokine (C-X-C motif) ligand 4 (CXCL4) gene polymorphisms with thoracic aortic aneurysm. A total of 50 patients with thoracic aortic aneurysm (disease group) and 50 healthy people in the physical examination center (control group) in our hospital were selected as the subjects. The CXCR2 and CXCL4 gene polymorphisms were detected by means of blood drawing, DNA extraction, PCR and sequencing. Moreover, the levels of serum CXCR2 and CXCL4 were measured using ELISA, and the levels of C-reactive protein (CRP) and low-density lipoprotein (LDL) were determined. The study found significant differences in the distribution of genotypes and alleles of CXCR2 and CXCL4 gene polymorphisms between the disease group and control group. The frequencies of certain genotypes (AA of rs3890158, CC of rs2230054, AT of rs352008, and CT of rs1801572) were higher in the disease group, as were the frequencies of certain alleles (C of rs2230054 and rs1801572). The distribution of recessive models of rs2230054 was also different, with a lower frequency of CC+CT in the disease group. The haplotype distributions of both gene polymorphisms differed between the groups. CXCR2 rs3890158 and CXCL4 rs352008 were correlated with lower serum levels of their respective proteins, while CXCL4 rs1801572 was associated with CRP levels and CXCR2 rs2230054 with LDL levels in patients (P < 0.05). The gene polymorphisms of CXCR2 and CXCL4 probably have apparent correlations with the susceptibility to thoracic aortic aneurysm.
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Affiliation(s)
- Hua Zhao
- Department of Cardiothoracic Surgery, Affiliated Hospital of Hubei University of Arts and Sciences (Xiangyang Central Hospital), Xiangyang, Hubei, China
| | - Yanrong Xu
- CCU, Shiyan People's Hospital affiliated to Hubei Medical College, Shiyan, China
| | - Jun Cui
- Department of Cardiothoracic Surgery, Affiliated Hospital of Hubei University of Arts and Sciences (Xiangyang Central Hospital), Xiangyang, Hubei, China
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Yang H, Wu Q, Li J, Chen Q, Su L, He X, Li J, Qiu X. In Vivo Fate of CXCR2-Overexpressing Mesenchymal Stromal/Stem Cells in Pulmonary Diseases Monitored by Near-Infrared Region 2 Imaging. ACS Appl Mater Interfaces 2023; 15:20742-20752. [PMID: 37071603 DOI: 10.1021/acsami.3c01741] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Lung-associated diseases pose a huge threat to human society. Mesenchymal stromal/stem cells (MSCs) hold great promise in the treatment of pulmonary diseases through cell transdifferentiation, paracrine factors, immune regulation, EV secretion, and drug loading. However, intravenous injection of MSCs often resulted in limited lesion tropism and apparent off-target accumulation. The IL-8-CXCR1/2 chemokine axis has been shown to be involved in progression of diseases including lung cancer and acute lung injury (ALI). Herein, we took advantage of this chemokine axis to enhance the homing of MSCs to cancerous and inflammation lesions. The in vivo distribution of MSCs was further monitored real-time by near-infrared region 2 (NIR-II) imaging owing to its outstanding performance in deep tissue imaging. Specifically, a new high-brightness D-A-D NIR-II dye, LJ-858, was synthesized and coprecipitated with a poly(d,l-lactic acid) polymer to form LJ-858 nanoparticles (NPs) with a relative quantum yield of 14.978%. LJ-858 NPs can efficiently label MSCs, and the NIR-II signal can be stable for 14 days without compromising the cell viability. Subcutaneous tracking of labeled MSCs showed no significant decline of NIR-II intensity within 24 h. The enhanced tropism of CXCR2-overexpressing MSCs to A549 tumor cells and the inflamed lung tissue was demonstrated through transwell models. The in vivo and ex vivo NIR-II imaging results further validated the significantly enhanced lesion retention of MSCCXCR2 in the lung cancer and ALI models. Taken together, this work reported a robust strategy to enhance the pulmonary disease tropism by the IL-8-CXCR1/2 chemokine axis. In addition, in vivo distribution of MSCs was successfully visualized by NIR-II imaging, which provides more insights into optimizing protocols for MSC-based therapies in the future.
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Affiliation(s)
- Huiying Yang
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Qingxia Wu
- Gene Editing Center, School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Jinwei Li
- Gene Editing Center, School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Qimingxing Chen
- Gene Editing Center, School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Lili Su
- Gene Editing Center, School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Xiaoyan He
- Gene Editing Center, School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Jianfeng Li
- Gene Editing Center, School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Xiaoyan Qiu
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai 200040, China
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Baragetti A, Da Dalt L, Moregola A, Svecla M, Terenghi O, Mattavelli E, De Gaetano LN, Uboldi P, Catapano AL, Norata GD. Neutrophil aging exacerbates high fat diet induced metabolic alterations. Metabolism 2023; 144:155576. [PMID: 37116643 DOI: 10.1016/j.metabol.2023.155576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 04/14/2023] [Accepted: 04/20/2023] [Indexed: 04/30/2023]
Abstract
BACKGROUND High fat diet (HFD) chronically hyper-activate the myeloid cell precursors, but whether it affects the neutrophil aging is unknown. PURPOSE We characterized how HFD impacts neutrophil aging, infiltration in metabolic tissues and if this aging, in turn, modulates the development of metabolic alterations. We immunophenotyped neutrophils and characterized the metabolic responses in physiology (wild-type mice, WT) and in mice with constitutively aged neutrophils (MRP8 driven conditional deletion of CXCR4; herein CXCR4fl/flCre+) or with constitutively fresh neutrophils (MRP8 driven conditional deletion of CXCR2; CXCR2fl/flCre+), following 20 weeks of HFD feeding (45 % kcal from fat). FINDINGS After 20 weeks HFD, the gluco-metabolic profile of CXCR4fl/flCre+ mice was comparable to that of WT mice, while CXCR2fl/flCre+ mice were protected from metabolic alterations. CXCR4fl/flCre+ infiltrated more, but CXCR2fl/flCre+ neutrophils infiltrated less, in liver and visceral adipose tissue (VAT). As consequence, while CXCR4fl/flCre+ resulted into hepatic "suicidal" neutrophils extracellular traps (NETs) and altered immune cell architecture in VAT, CXCR2fl/flCre+ promoted proresolutive hepatic NETs and reduced accumulation of pro-inflammatory macrophages in VAT. In humans, higher Cxcl12 (CXCR4 ligand) plasma levels correlated with visceral adiposity while higher levels of Cxcl1, the ligand of CXCR2, correlated with indexes of hepatic steatosis, adiposity and metabolic syndrome. CONCLUSIONS Neutrophil aging might contribute to the development of HFD induced metabolic disorders.
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Affiliation(s)
- Andrea Baragetti
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy
| | - Lorenzo Da Dalt
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy
| | - Annalisa Moregola
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy
| | - Monika Svecla
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy
| | - Ottavia Terenghi
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy
| | - Elisa Mattavelli
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy; SISA Centre for the Study of Atherosclerosis, Bassini Hospital, Cinisello Balsamo, Italy
| | - Lucia Nicolini De Gaetano
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy; IRCCS Multimedica Hospital, Milan, Italy
| | - Patrizia Uboldi
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy
| | - Alberico Luigi Catapano
- SISA Centre for the Study of Atherosclerosis, Bassini Hospital, Cinisello Balsamo, Italy; IRCCS Multimedica Hospital, Milan, Italy
| | - Giuseppe Danilo Norata
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy; SISA Centre for the Study of Atherosclerosis, Bassini Hospital, Cinisello Balsamo, Italy.
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Huang R, Zhang L, Li X, Liu F, Cheng X, Ran H, Wang Z, Li Y, Feng Y, Liang L, Su W, Melgiri ND, Sun Y. Anti- CXCR2 antibody-coated nanoparticles with an erythrocyte-platelet hybrid membrane layer for atherosclerosis therapy. J Control Release 2023; 356:610-622. [PMID: 36898531 DOI: 10.1016/j.jconrel.2023.02.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 02/20/2023] [Accepted: 02/26/2023] [Indexed: 03/12/2023]
Abstract
Atherosclerosis is the leading cause of mortality globally. RBC-platelet hybrid membrane-coated nanoparticles ([RBC-P]NPs), which biologically mimic platelets in vivo, display evidence of anti-atherosclerotic activity. The efficacy of a targeted RBC-platelet hybrid membrane-coated nanoparticles ([RBC-P]NP)-based approach was investigated as a primary preventive measure against atherosclerosis. A ligand-receptor interactome analysis conducted with circulating platelets and monocytes derived from CAD patients and healthy controls identified CXCL8-CXCR2 as a key platelet ligand-monocyte receptor dyad in CAD patients. Based on this analysis, a novel anti-CXCR2 [RBC-P]NP that specifically binds to CXCR2 and blocks the interaction between CXCL8 and CXCR2 was engineered and characterized. Administering anti-CXCR2 [RBC-P]NPs to Western diet-fed Ldlr-/- mice led to diminished plaque size, necrosis, and intraplaque macrophage accumulation relative to control [RBC-P]NPs or vehicle. Importantly, anti-CXCR2 [RBC-P]NPs demonstrated no adverse bleeding/hemorrhagic effects. A series of in vitro experiments was conducted to characterize anti-CXCR2 [RBC-P]NP's mechanism of action in plaque macrophages. Mechanistically, anti-CXCR2 [RBC-P]NPs inhibited p38α (Mapk14)-mediated, pro-inflammatory M1 skewing and corrected efferocytosis in plaque macrophages. This targeted [RBC-P]NP-based approach, in which the cardioprotective effects of anti-CXCR2 [RBC-P]NP therapy overweighs its bleeding/hemorrhagic risks, could potentially be used to proactively manage atherosclerotic progression in at-risk populations.
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Affiliation(s)
- Rongzhong Huang
- Precision Medicine Center, The Second Affiliated Hospital of Chongqing Medical University, Chongqing Municipality Clinical Research Center for Geriatrics and Gerontology, Chongqing 400010, China
| | - Lujun Zhang
- Department of Cardiology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Xingsheng Li
- Precision Medicine Center, The Second Affiliated Hospital of Chongqing Medical University, Chongqing Municipality Clinical Research Center for Geriatrics and Gerontology, Chongqing 400010, China
| | - Fan Liu
- Department of Ultrasound, The Second Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ultrasound Molecular Imaging, Chongqing, China
| | - Xiaoxiao Cheng
- Department of Ultrasound, The Second Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ultrasound Molecular Imaging, Chongqing, China
| | - Haitao Ran
- Department of Ultrasound, The Second Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ultrasound Molecular Imaging, Chongqing, China
| | - Zhigang Wang
- Department of Ultrasound, The Second Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ultrasound Molecular Imaging, Chongqing, China
| | - Yongyong Li
- Precision Medicine Center, The Second Affiliated Hospital of Chongqing Medical University, Chongqing Municipality Clinical Research Center for Geriatrics and Gerontology, Chongqing 400010, China
| | - Yuxing Feng
- Department of Rehabilitation and Pain Medicine, The Ninth People's Hospital of Chongqing, Chongqing, China
| | - Liwen Liang
- Department of Cardiology, The First People's Hospital of Yunnan Province, Kunming, China
| | - Wenhua Su
- Department of Cardiology, The First People's Hospital of Yunnan Province, Kunming, China
| | - N D Melgiri
- Impactys Foundation for Biomedical Research, San Diego, CA, USA
| | - Yang Sun
- Department of Ultrasound, The Second Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ultrasound Molecular Imaging, Chongqing, China.
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Xie Y, Kuang W, Wang D, Yuan K, Yang P. Expanding role of CXCR2 and therapeutic potential of CXCR2 antagonists in inflammatory diseases and cancers. Eur J Med Chem 2023; 250:115175. [PMID: 36780833 DOI: 10.1016/j.ejmech.2023.115175] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 01/23/2023] [Accepted: 01/31/2023] [Indexed: 02/10/2023]
Abstract
C-X-C motif chemokine receptor 2 (CXCR2) is G protein-coupled receptor (GPCR) and plays important roles in various inflammatory diseases and cancers, including chronic obstructive pulmonary disease (COPD), atherosclerosis, asthma, and pancreatic cancer. Upregulation of CXCR2 is closely associated with the migration of neutrophils and monocytes. To date, many small-molecule CXCR2 antagonists have entered clinical trials, showing favorable safety and therapeutic effects. Hence, we provide an overview containing the discovery history, protein structure, signaling pathways, biological functions, structure-activity relationships and clinical significance of CXCR2 antagonists in inflammatory diseases and cancers. According to the latest development and recent clinical progress of CXCR2 small molecule antagonists, we speculated that CXCR2 can be used as a biomarker and a new target for diabetes and that CXCR2 antagonists may also attenuate lung injury in coronavirus disease 2019 (COVID-19).
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Affiliation(s)
- Yishi Xie
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 211198, China; Institute of Innovative Drug Discovery and Development, China Pharmaceutical University, Nanjing, 211198, China
| | - Wenbin Kuang
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 211198, China; Institute of Innovative Drug Discovery and Development, China Pharmaceutical University, Nanjing, 211198, China
| | - Dawei Wang
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 211198, China; Institute of Innovative Drug Discovery and Development, China Pharmaceutical University, Nanjing, 211198, China
| | - Kai Yuan
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 211198, China; Institute of Innovative Drug Discovery and Development, China Pharmaceutical University, Nanjing, 211198, China
| | - Peng Yang
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 211198, China; Institute of Innovative Drug Discovery and Development, China Pharmaceutical University, Nanjing, 211198, China.
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Dahal S, Chaudhary P, Jung YS, Kim JA. Megakaryocyte-Derived IL-8 Acts as a Paracrine Factor for Prostate Cancer Aggressiveness through CXCR2 Activation and Antagonistic AR Downregulation. Biomol Ther (Seoul) 2023; 31:210-218. [PMID: 36787954 PMCID: PMC9970838 DOI: 10.4062/biomolther.2023.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 01/18/2023] [Accepted: 01/25/2023] [Indexed: 02/16/2023] Open
Abstract
Prostate cancer is the fifth leading cause of cancer-related mortality in men, primarily because of treatment resistance, recurrence, and metastasis. In the present study, we investigated the role of paracrine interleukin-8 (IL-8) in the antagonistic expression of IL-8 and androgen receptor (AR), and the contribution of IL-8 to prostate cancer aggressiveness. In hormone-responsive LNCaP cells that do not express IL-8, recombinant IL-8 treatment significantly increased expressions of IL-8, CXC chemokine receptor 2 (CXCR2), matrix metalloproteinase (MMP)-2/9, Snail, and vimentin. IL-8 treatment significantly decreased AR and E-cadherin expression. IL-8-induced gene expression changes were suppressed by navarixin, a CXCR1/2 inhibitor, and gallein, a Gβγ inhibitor. In PC-3 androgen-refractory prostate cancer cells, IL-8 knockdown reduced expressions of CXCR2, MMP-2/9, Snail, and vimentin, and increased AR and E-cadherin expressions at the mRNA and protein levels. Co-culture with MEG-01 human megakaryocytic cells secreting high levels of IL-8 induced gene expression changes in both LNCaP and PC-3 cells, similar to those induced by IL-8 treatment. The altered gene expressions were accompanied by significant activation of transcription factor Snail in LNCaP and PC-3 cells. Treatment with the CXCR blocker navarixin inhibited the invasion of PC-3 cells but not LNCaP cells. However, invasion induced by MEG-01 was inhibited by navarixin in both LNCaP and PC-3 cells. The collective findings demonstrate that IL-8 enhances CXCR2 expression, which antagonistically regulates AR expression. More importantly, through changes in IL-8/CXCR2-regulated gene expression, IL-8 induces antiandrogen therapy resistance and epithelial-mesenchymal transition in prostate cancer.
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Affiliation(s)
- Sadan Dahal
- College of Pharmacy, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Prakash Chaudhary
- College of Pharmacy, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Yi-Sook Jung
- College of Pharmacy, Ajou University, Suwon 16499, Republic of Korea,Corresponding Authors E-mail: (Kim JA), (Jung YS), Tel: +82 53-810-2816 (Kim JA), +82-31-219-3444 (Jung YS), Fax: +82-53-810-4654 (Kim JA), +82-31-219-3501 (Jung YS)
| | - Jung-Ae Kim
- College of Pharmacy, Yeungnam University, Gyeongsan 38541, Republic of Korea,Corresponding Authors E-mail: (Kim JA), (Jung YS), Tel: +82 53-810-2816 (Kim JA), +82-31-219-3444 (Jung YS), Fax: +82-53-810-4654 (Kim JA), +82-31-219-3501 (Jung YS)
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Borges VDF, Galant LS, Kanashiro A, Castanheira FVES, Monteiro VVS, Duarte DÂ, Rodrigues FC, Silva CMDS, Schneider AH, Cebinelli GCM, de Lima MHF, Viola JPDB, Cunha TM, da Costa Neto CM, Alves-Filho JCF, Pupo AS, Cunha FDQ. FK506 impairs neutrophil migration that results in increased polymicrobial sepsis susceptibility. Inflamm Res 2023; 72:203-215. [PMID: 36401631 DOI: 10.1007/s00011-022-01669-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 11/02/2022] [Accepted: 11/06/2022] [Indexed: 11/21/2022] Open
Abstract
OBJECTIVE This study aimed to investigate the effects of FK506 on experimental sepsis immunopathology. It investigated the effect of FK506 on leukocyte recruitment to the site of infection, systemic cytokine production, and organ injury in mice with sepsis. METHODS Using a murine cecal ligation and puncture (CLP) peritonitis model, the experiments were performed with wild-type (WT) mice and mice deficient in the gene Nfat1 (Nfat1-/-) in the C57BL/6 background. Animals were treated with 2.0 mg/kg of FK506, subcutaneously, 1 h before the sepsis model, twice a day (12 h/12 h). The number of bacteria colony forming units (CFU) was manually counted. The number of neutrophils in the lungs was estimated by the myeloperoxidase (MPO) assay. The expression of CXCR2 in neutrophils was determined using flow cytometry analysis. The expression of inflammatory cytokines in macrophage was determined using ELISA. The direct effect of FK506 on CXCR2 internalization was evaluated using HEK-293T cells after CXCL2 stimulation by the BRET method. RESULTS FK506 treatment potentiated the failure of neutrophil migration into the peritoneal cavity, resulting in bacteremia and an exacerbated systemic inflammatory response, which led to higher organ damage and mortality rates. Failed neutrophil migration was associated with elevated CXCL2 chemokine plasma levels and lower expression of the CXCR2 receptor on circulating neutrophils compared with non-treated CLP-induced septic mice. FK506 did not directly affect CXCL2-induced CXCR2 internalization by transfected HEK-293 cells or mice neutrophils, despite increasing CXCL2 release by LPS-treated macrophages. Finally, the CLP-induced response of Nfat1-/- mice was similar to those observed in the Nfat1+/+ genotype, suggesting that the FK506 effect is not dependent on the NFAT1 pathway. CONCLUSION Our data indicate that the increased susceptibility to infection of FK506-treated mice is associated with failed neutrophil migration due to the reduced membrane availability of CXCR2 receptors in response to exacerbated levels of circulating CXCL2.
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Affiliation(s)
- Vanessa de Fátima Borges
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Center for Research in Inflammatory Diseases, CRID, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Leticia Selinger Galant
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Center for Research in Inflammatory Diseases, CRID, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Alexandre Kanashiro
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Center for Research in Inflammatory Diseases, CRID, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Fernanda Vargas E Silva Castanheira
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Center for Research in Inflammatory Diseases, CRID, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Valter Vinícius Silva Monteiro
- Center for Research in Inflammatory Diseases, CRID, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Diego Ângelo Duarte
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Filipe Camargo Rodrigues
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Center for Research in Inflammatory Diseases, CRID, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Camila Meirelles de Souza Silva
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Center for Research in Inflammatory Diseases, CRID, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Ayda Henriques Schneider
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Center for Research in Inflammatory Diseases, CRID, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Guilherme Cesar Martelossi Cebinelli
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Center for Research in Inflammatory Diseases, CRID, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Mikhael Haruo Fernandes de Lima
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Center for Research in Inflammatory Diseases, CRID, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | | | - Thiago Mattar Cunha
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Center for Research in Inflammatory Diseases, CRID, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Claudio Miguel da Costa Neto
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - José Carlos Farias Alves-Filho
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Center for Research in Inflammatory Diseases, CRID, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - André Sampaio Pupo
- Department of Biophysics and Pharmacology, Institute of Biosciences, University of São Paulo State (UNESP), Botucatu, São Paulo, Brazil
| | - Fernando de Queiroz Cunha
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil. .,Center for Research in Inflammatory Diseases, CRID, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.
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Tran TTN, Tran QH, Duong CQ, Nguyen QT, Tran VT, Le MT, Tran VH, Thai KM. In silico approach to identify novel allosteric intracellular antagonist for blocking the interleukin-8/ CXCR2 receptor signaling pathway. J Biomol Struct Dyn 2023; 41:13154-13167. [PMID: 36709441 DOI: 10.1080/07391102.2023.2171136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 01/15/2023] [Indexed: 01/30/2023]
Abstract
The role of interleukin-8 (IL-8) and its receptor CXCR2 in inflammatory responses and tumor development and progression has been well documented. Our study aims to discover novel compounds as CXCR2 antagonists to block the IL-8 signaling pathway using an in silico drug design. Herein, a structure-based pharmacophore model was developed based on the crystal structure of inactive CXCR2 in a complex with an allosteric inhibitor. This model was validated and refined, followed by virtual screening with the ZINC15 database. Subsequent molecular docking allows for predicting the best pose of a ligand inside a receptor binding site. We found that the 35 top-ranked hits exhibited docking scores from -30.81 to -25.28 kJ/mol and better interaction potential comparing the reference inhibitor. Analysis of ADME and toxicity properties revealed the efficacy and safety of the selected seven compounds. To validate the stability of the protein-ligand complex structure MD simulations approach has also been performed and confirmed via the critical parameters. The MD results explained that the CXCR2 receptor bound with two best-proposed molecules, including ZINC77105530 and ZINC93176465, was quite stable states as observed from low RMSD, RMSF, Rg, SASA values, and high occupancy of the interaction types. Finally, our data identified that these compounds play as potential inhibitors of IL-8 signaling pathways with the MM/GBSA binding free energies of -41.77 ± 6.45 kcal/mol and -38.84 ± 6.16 kcal/mol, respectively.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Thi-Thuy-Nga Tran
- Faculty of Pharmacy, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam
- Department of Pharmaceutical Chemistry, Da Nang University of Medical Technology and Pharmacy, Da Nang, Vietnam
| | - Que-Huong Tran
- Faculty of Pharmacy, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam
- Department of Pharmaceutical Chemistry, Da Nang University of Medical Technology and Pharmacy, Da Nang, Vietnam
| | - Cuong Quoc Duong
- Faculty of Pharmacy, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Quoc-Thai Nguyen
- Faculty of Pharmacy, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Van-Thanh Tran
- Faculty of Pharmacy, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Minh-Tri Le
- Faculty of Pharmacy, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam
- School of Medicine, Vietnam National University Ho Chi Minh City, Linh Trung Ward., Thu Duc Dist, Ho Chi Minh City, Vietnam
| | - Viet-Hung Tran
- Institute of Drug Quality Control Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Khac-Minh Thai
- Faculty of Pharmacy, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam
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Cho HS, Choi YI, Park SU, Han YS, Kwon J, Jung SJ. Prevention of Chemotherapy-Induced Peripheral Neuropathy by Inhibiting C-X-C Motif Chemokine Receptor 2. Int J Mol Sci 2023; 24. [PMID: 36768178 DOI: 10.3390/ijms24031855] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 01/08/2023] [Accepted: 01/16/2023] [Indexed: 01/19/2023] Open
Abstract
Chemotherapy-induced peripheral neuropathy (CIPN) is a major drawback in the use of chemotherapeutic agents for patients with cancer. Although studies have investigated a broad number of molecules that might be related to CIPN, the differences in the chemokine pathways between various chemotherapeutic agents, such as vincristine and oxaliplatin, which are some of the most widely used treatments, have not been fully elucidated. We confirmed that the administration (intraperitoneal injections for seven days) of vincristine (0.1 mg/kg) and oxaliplatin (3 mg/kg) induced pain by using the von Frey behavioral test. Subsequent applications with vincristine and oxaliplatin led to mechanical allodynia that lasted more than one week from the fifth day. After the induction of mechanical allodynia, the mRNA expression of CXCR2, CXCL1, CXCL3, and CXCL5 was examined in the dorsal root ganglia (DRG) and spinal cord of the CIPN models. As a result, the mRNA expression of CXCR2 robustly increased in the lumbar spinal cord in the oxaliplatin-treated mice. Next, to evaluate the involvement of CXCR2 in CIPN, reparixin, a CXCR1/2 inhibitor, was administered intrathecally or intraperitoneally with vincristine or oxaliplatin and was further verified by treatment with ruxolitinib, which inhibits Janus kinase 2 downstream of the CXCR1/2 pathway. Reparixin and ruxolitinib blocked oxaliplatin-induced allodynia but not vincristine-induced allodynia, which suggests that CXCR2-related pathways are associated with the development of oxaliplatin-induced neuropathy. Together with the above results, this suggests that the prevention of oxaliplatin-induced neuropathy by CXCR2 inhibition can lead to successful chemotherapy, and it is important to provide appropriate countermeasures against CIPN development for each specific chemotherapeutic agent.
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Lee NH, Ma Y, Ang CS, Dumesny C, Huynh N, Yang Y, Wang K, Nikfarjam M, He H. CXCL5 knockdown attenuated gemcitabine resistance of pancreatic cancer through regulation of cancer cells and tumour stroma. Am J Transl Res 2023; 15:2676-2689. [PMID: 37193135 PMCID: PMC10182491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 12/28/2022] [Indexed: 05/18/2023]
Abstract
Chemoresistance is one of the major causes to the poor prognosis of pancreatic cancer (PC). Gemcitabine alone and gemcitabine-based therapies are mostly used for the treatment of PC. Gemcitabine resistance becomes the focus of chemotherapy. C-X-C motif chemokine 5 (CXCL5), a member of the C-X-C chemokine family, acts through C-X-C chemokine receptor type 2 (CXCR2). A high level of CXCL5 is associated with worse prognosis in PC patients and increased suppressive immune cell infiltration. Increased expression of CXCL5 is also found in gemcitabine-treated PC cells. To investigate the role of CXCL5 in PC response to gemcitabine, CXCL5 knockdown (KD) PC cells were generated and its effect on cancer cell response to gemcitabine in vitro and in vivo was studied. The mechanisms involved were also explored by determining the changes in the tumour microenvironment (TME) and protein profile of the CXCL5 KD cells using immune-staining and proteomic analysis. The results showed that CXCL5 expression were increased in all PC cell lines tested and in gemcitabine-resistant tumour tissue, that CXCL5 KD suppressed PC growth and sensitized PC cell response to gemcitabine and that CXCL5 KD stimulated the activation of stromal cells in TME. We conclude that CXCL5 promotes gemcitabine resistance by affecting TME and cancer cells.
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Affiliation(s)
- Nien-Hung Lee
- Department of Surgery, University of Melbourne, Austin HealthHeidelberg, Victoria, Australia
| | - Yi Ma
- Department of Surgery, University of Melbourne, Austin HealthHeidelberg, Victoria, Australia
| | - Ching-Seng Ang
- Bio-21 Institute, University of MelbourneParkville, Victoria, Australia
| | - Chelsea Dumesny
- Department of Surgery, University of Melbourne, Austin HealthHeidelberg, Victoria, Australia
| | - Nhi Huynh
- Department of Surgery, University of Melbourne, Austin HealthHeidelberg, Victoria, Australia
- Tumour Targeting Laboratory, Level 5, ONJCRIHeidelberg, Victoria, Australia
| | - Yang Yang
- Department of Surgery, University of Melbourne, Austin HealthHeidelberg, Victoria, Australia
| | - Kai Wang
- Department of Surgery, University of Melbourne, Austin HealthHeidelberg, Victoria, Australia
| | - Mehrdad Nikfarjam
- Department of Surgery, University of Melbourne, Austin HealthHeidelberg, Victoria, Australia
| | - Hong He
- Department of Surgery, University of Melbourne, Austin HealthHeidelberg, Victoria, Australia
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Korbecki J, Maruszewska A, Bosiacki M, Chlubek D, Baranowska-Bosiacka I. The Potential Importance of CXCL1 in the Physiological State and in Noncancer Diseases of the Cardiovascular System, Respiratory System and Skin. Int J Mol Sci 2022; 24. [PMID: 36613652 DOI: 10.3390/ijms24010205] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 12/11/2022] [Accepted: 12/12/2022] [Indexed: 12/24/2022] Open
Abstract
In this paper, we present a literature review of the role of CXC motif chemokine ligand 1 (CXCL1) in physiology, and in selected major non-cancer diseases of the cardiovascular system, respiratory system and skin. CXCL1, a cytokine belonging to the CXC sub-family of chemokines with CXC motif chemokine receptor 2 (CXCR2) as its main receptor, causes the migration and infiltration of neutrophils to the sites of high expression. This implicates CXCL1 in many adverse conditions associated with inflammation and the accumulation of neutrophils. The aim of this study was to describe the significance of CXCL1 in selected diseases of the cardiovascular system (atherosclerosis, atrial fibrillation, chronic ischemic heart disease, hypertension, sepsis including sepsis-associated encephalopathy and sepsis-associated acute kidney injury), the respiratory system (asthma, chronic obstructive pulmonary disease (COPD), chronic rhinosinusitis, coronavirus disease 2019 (COVID-19), influenza, lung transplantation and ischemic-reperfusion injury and tuberculosis) and the skin (wound healing, psoriasis, sunburn and xeroderma pigmentosum). Additionally, the significance of CXCL1 is described in vascular physiology, such as the effects of CXCL1 on angiogenesis and arteriogenesis.
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Wang HC, Haung LY, Wang CJ, Chao YJ, Hou YC, Yen CJ, Shan YS. Tumor-associated macrophages promote resistance of hepatocellular carcinoma cells against sorafenib by activating CXCR2 signaling. J Biomed Sci 2022; 29:99. [PMID: 36411463 PMCID: PMC9677647 DOI: 10.1186/s12929-022-00881-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 11/10/2022] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Sorafenib (SOR) is the first line treatment for advanced hepatocellular carcinoma (HCC), but resistance develops frequently. Tumor-associated macrophages (TAMs) have been reported to affect the progression of HCC. We therefore aimed to study the role of TAMs in promoting SOR resistance. METHODS Immunofluorescence staining for the M2 marker CD204 and the cancer stem cell (CSC) markers CD44 and CD133 was performed in paired HCC and adjacent noncancerous tissues and HCC tissues stratified by response of SOR treatment. HCC/U937 coculture system and cytokines were used to induce M2 polarization for studying the effects of M2 TAMs on CSC properties and apoptotic death of HCC cells after SOR treatment. RESULTS Higher expression of CD204, CD44, and CD133 was observed in patients with SOR nonresponse (SNR) than in those with SOR response (SR), suggesting that SNR is positively correlated to levels of CSCs and M2 TAMs. After coculture, M2 TAMs could increase the level of CSCs but decrease SOR-induced apoptosis. Incubation of HCC cells with coculture conditioned medium increased the formation of spheres that were resistant to SOR. Furthermore, CXCL1 and CXCL2 were found to be the potential paracrine factors released by M2 TAMs to upregulate SOR resistance in HCC cells. Treatment with CXCL1 and CXCL2 could increase HCC CSC activity but decrease SOR-induced apoptosis by affecting BCL-2 family gene expression. Using pharmacological inhibitors, CXCR2/ERK signaling was found to be critical to CXCL1- and CXCL2-mediated SOR resistance. CONCLUSION This study identified CXCL1, CXCL2, and their downstream CXCR2/ERK signaling as potential therapeutic targets to overcome SOR resistance in HCC.
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Affiliation(s)
- Hao-Chen Wang
- grid.64523.360000 0004 0532 3255Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, No. 35, Xiaodong Road, Tainan, 704017 Taiwan
| | - Lin-Ya Haung
- grid.64523.360000 0004 0532 3255Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, No. 35, Xiaodong Road, Tainan, 704017 Taiwan
| | - Chih-Jung Wang
- grid.64523.360000 0004 0532 3255Department of Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, No. 138, Shengli Road, Tainan, 704302 Taiwan
| | - Ying-Jui Chao
- grid.64523.360000 0004 0532 3255Department of Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, No. 138, Shengli Road, Tainan, 704302 Taiwan
| | - Ya-Chin Hou
- grid.64523.360000 0004 0532 3255Department of Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, No. 138, Shengli Road, Tainan, 704302 Taiwan
| | - Chia-Jui Yen
- grid.64523.360000 0004 0532 3255Department of Oncology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, No. 138, Shengli Road, Tainan, 704302 Taiwan
| | - Yan-Shen Shan
- grid.64523.360000 0004 0532 3255Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, No. 35, Xiaodong Road, Tainan, 704017 Taiwan ,grid.64523.360000 0004 0532 3255Department of Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, No. 138, Shengli Road, Tainan, 704302 Taiwan
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Cheng P, Cheng L, Han H, Li J, Ma C, Huang H, Zhou J, Feng J, Huang Y, Lv Y, Huang H, Wang Y, Hou L, Chen Y, Li G. A pH/H 2 O 2 /MMP9 Time-Response Gel System with Sparc high Tregs Derived Extracellular Vesicles Promote Recovery After Acute Myocardial Infarction. Adv Healthc Mater 2022; 11:e2200971. [PMID: 36056927 DOI: 10.1002/adhm.202200971] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 08/08/2022] [Indexed: 01/28/2023]
Abstract
Regulatory T cells overexpressing SPARC (secreted protein acidic and cysteine rich) (Sparchigh Tregs) can help repair infarct tissues after acute myocardial infarction (AMI). This research demonstrates that Sparchigh Treg-derived extracellular vesicles (EVs) effectively improved cardiac function through proinflammatory factors IL-1β, IL-6, and TNF-α inhibition and collagen synthesis related gene Col3a1 promotion in AMI; moreover, a composite hydrogel-EVs system (DHPM(4APPC)_EVs) is designed based on Sparchigh Treg-derived EVs with CXCR2 overexpressing and pH/H2 O2 /MMP9 temporally responsive gel microspheres. In AMI, due to the levels of chemokine, pH, H2 O2 , and MMP9 enzymes in the infarct area, DHPM(4APPC)_EVs can effectively target the infarct area, release the loaded EVs, form the gel to capture the released EVs, and slowly release the captured EVs, contribute to promote EVs to stay in the infarct area for a long time to play the repair function, so as to reduce myocardial injury and promote the improvement of cardiac function. The proposed system in this research provides a potential approach for the treatment of AMI in the future.
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Affiliation(s)
- Panke Cheng
- Department of Cardiology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, 610072, P. R. China
| | - Lianying Cheng
- Department of Integrated Traditional Chinese and Western Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, P. R. China
| | - Hukui Han
- Department of Cardiology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, 610072, P. R. China
| | - Junlin Li
- Department of Cardiology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, 610072, P. R. China
| | - Cui Ma
- Department of Mathematics, Army Medical University, Chongqing, 400038, P. R. China
| | - Hui Huang
- Department of Cardiology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, 610072, P. R. China
| | - Jie Zhou
- Department of Cardiology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, 610072, P. R. China
| | - Jiayue Feng
- Department of Cardiology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, 610072, P. R. China
| | - Yu Huang
- Department of Cardiology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, 610072, P. R. China
| | - Yipin Lv
- Department of Digestive Diseases, The General Hospital of Western Theater Command, Chengdu, 610036, P. R. China
| | - Huihui Huang
- Department of Cardiology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, 610072, P. R. China
| | - Yiren Wang
- Department of Cardiology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, 610072, P. R. China
| | - Lingmi Hou
- Department of Breast and thyroid Surgery, Biological targeting Laboratory of Breast Cancer, Academician (Expert) Workstation, Affiliated Hospital of North Sichuan Medical College, Nanchong, 637000, P. R. China.,Department of Breast and Thyroid Surgery, Yingshan Hospital of West China Hospital, Sichuan University, Nanchong, 673000, P. R. China
| | - Yang Chen
- Department of Cardiology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, 610072, P. R. China
| | - Gang Li
- Department of Cardiology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, 610072, P. R. China
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De Matteis G, Grandoni F, Signorelli F, Degano L, Vicario D, Buttazzoni L, Napolitano F. Combined effects of CXCL8 (IL-8) and CXCR2 (IL-8R) gene polymorphisms on deregressed MACE EBV indexes of milk-related traits in Simmental bulls. J DAIRY RES 2022; 89:375-81. [PMID: 36503645 DOI: 10.1017/S0022029922000772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
CXCL8 (also known as IL-8) is a member of the CXC subfamily of chemokines that binds two of the seven transmembrane G-protein-coupled receptors (GPCRs), CXCR1 and CXCR2, to mediate and regulate leucocyte accumulation and activation at sites of inflammation. They are known to play a critical role in both disease susceptibility and infection outcome. The aim of this study was to investigate the entire sequences of CXCL8 and CXCR2 genes in thirty-one Simmental sires to evaluate the effects of genomic variants on the indexes of the bulls for milk, fat and protein yields, and for somatic cell score (SCS). Five new single nucleotide polymorphisms (SNPs) were found in CXCR2 gene. The analysis of association indicated that one SNP in CXCL8 and two in CXCR2 influenced the considered traits. To evaluate the existence of functional haplotypic effects, combinations among the three genomic variants (SNP 1 in CXCL8, SNP 6 and SNP 7 in CXCR2) were investigated. Four different haplotypic alleles were identified in the experimental population, one of which at a high frequency (61%). Bulls with Hap 4 (G-C-G at SNP 1, SNP 6, and SNP 7 respectively) had more favourable indexes for SCS (P < 0.05). These results suggest that the SNPs in CXCL8 and CXCR2 may be potential genetic markers to improve udder health in the Simmental breed.
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50
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Farmer JP, Mistry SN, Laughton CA, Holliday ND. Development of fluorescent peptide G protein-coupled receptor activation biosensors for NanoBRET characterization of intracellular allosteric modulators. FASEB J 2022; 36:e22576. [PMID: 36183332 DOI: 10.1096/fj.202201024r] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 09/02/2022] [Accepted: 09/19/2022] [Indexed: 11/11/2022]
Abstract
G protein-coupled receptors (GPCRs) are widely therapeutically targeted, and recent advances in allosteric modulator development at these receptors offer further potential for exploitation. Intracellular allosteric modulators (IAM) represent a class of ligands that bind to the receptor-effector interface (e.g., G protein) and inhibit agonist responses noncompetitively. This potentially offers greater selectivity between receptor subtypes compared to classical orthosteric ligands. However, while examples of IAM ligands are well described, a more general methodology for assessing compound interactions at the IAM site is lacking. Here, fluorescent labeled peptides based on the Gα peptide C terminus are developed as novel binding and activation biosensors for the GPCR-IAM site. In TR-FRET binding studies, unlabeled peptides derived from the Gαs subunit were first characterized for their ability to positively modulate agonist affinity at the β2 -adrenoceptor. On this basis, a tetramethylrhodamine (TMR) labeled tracer was synthesized based on the 19 amino acid Gαs peptide (TMR-Gαs19cha18, where cha = cyclohexylalanine). Using NanoBRET technology to detect binding, TMR-Gαs19cha18 was recruited to Gs coupled β2 -adrenoceptor and EP2 receptors in an agonist-dependent manner, but not the Gi-coupled CXCR2 receptor. Moreover, NanoBRET competition binding assays using TMR-Gαs19cha18 enabled direct assessment of the affinity of unlabeled ligands for β2 -adrenoceptor IAM site. Thus, the NanoBRET platform using fluorescent-labeled G protein peptide mimetics offers novel potential for medium-throughput screens to identify IAMs, applicable across GPCRs coupled to a G protein class. Using the same platform, Gs peptide biosensors also represent useful tools to probe orthosteric agonist efficacy and the dynamics of receptor activation.
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Affiliation(s)
- James P Farmer
- School of Life Sciences, The Medical School, Queen's Medical Centre, University of Nottingham, Nottingham, UK.,Centre of Membrane Proteins and Receptors, University of Birmingham and University of Nottingham, Nottingham, UK
| | | | | | - Nicholas D Holliday
- School of Life Sciences, The Medical School, Queen's Medical Centre, University of Nottingham, Nottingham, UK.,Excellerate Bioscience, Biocity, Nottingham, UK
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