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Lai Y, Wang X, Ma J, Du C, Wang Y, Wang Y, Yuan W, Zhao M. Knockdown of EIF2AK2-OAS1 axis reduces ATP production inducing AMPK phosphorylation to inhibit the malignant behavior of gastric cancer cells. J Bioenerg Biomembr 2024; 56:433-449. [PMID: 38825632 DOI: 10.1007/s10863-024-10023-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Accepted: 05/24/2024] [Indexed: 06/04/2024]
Abstract
Energy metabolism has always been a hot topic in cancer progression and targeted therapy, and exploring the role of genes in energy metabolic pathways in cancer cells has become key to address this issue. Eukaryotic translation initiation factor 2α kinase 2 (EIF2AK2) plays regulatory roles in cancer and disorders of energy metabolism. Indeed, the role of EIF2AK2 in energy metabolism has been underestimated. The aim of this study is to reveal the expression specificity of EIF2AK2 in gastric cancer (GC) progression and metastasis, and to demonstrate the role of EIF2AK2 in energy metabolism, cytoskeleton, proliferation, death and metastasis pathways in GC cells. Mechanistically, EIF2AK2 overexpression promoted cytoskeleton remodeling and ATP production, mediated cell proliferation and metastasis, upregulated OAS1 expression, decreases p-AMPK expression and inhibited apoptosis in GC cells. Conversely, knockdown of EIF2AK2 resulted in the opposite effect. However, overexpression of OAS1 mediated the upregulation of mitochondrial membrane potential and promoted ATP production and NAD+/NADH ratio, but knockdown of OAS1 inhibited the above effects. In addition, knockdown of OAS1 had no effect on EIF2AK2 expression, but inhibited AMPK and upregulated p-AMPK expression. In conclusion, our study identified EIF2AK2 and OAS1 as previously undescribed regulators of energy metabolism in GC cells. We hypothesized that EIF2AK2-OAS1 axis may regulate energy metabolism and inhibit cellular malignant behavior in cancer cells by affecting ATP production to induce AMPK phosphorylation, suggesting EIF2AK2 as a potential therapeutic target for cancer cell progression.
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Affiliation(s)
- Yafang Lai
- Department of gastroenterology, Ordos Central Hospital, 23 Yijinhuoluo West Street, Dongsheng District, Ordos, Inner Mongolia, 017000, China
| | - Xiaofei Wang
- Department of Pathology, North China University of Science and Technology Affiliated Hospital, Tangshan, Hebei, 063000, China
| | - Jingrong Ma
- Department of gastroenterology, Ordos Central Hospital, 23 Yijinhuoluo West Street, Dongsheng District, Ordos, Inner Mongolia, 017000, China
| | - Chaoqun Du
- Department of gastroenterology, Ordos Central Hospital, 23 Yijinhuoluo West Street, Dongsheng District, Ordos, Inner Mongolia, 017000, China
| | - Yuyu Wang
- Department of gastroenterology, Ordos Central Hospital, 23 Yijinhuoluo West Street, Dongsheng District, Ordos, Inner Mongolia, 017000, China
| | - Yaxin Wang
- Department of gastroenterology, Ordos Central Hospital, 23 Yijinhuoluo West Street, Dongsheng District, Ordos, Inner Mongolia, 017000, China
| | - Wenzhao Yuan
- Department of gastroenterology, Ordos Central Hospital, 23 Yijinhuoluo West Street, Dongsheng District, Ordos, Inner Mongolia, 017000, China.
| | - Mingwei Zhao
- Department of gastroenterology, Ordos Central Hospital, 23 Yijinhuoluo West Street, Dongsheng District, Ordos, Inner Mongolia, 017000, China.
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Wang J, Guo B, Sun Z, Zhao S, Cao L, Zhong Z, Meng F. Polymersomal Poly(I:C) Self-Magnifies Antitumor Immunity by Inducing Immunogenic Cell Death and Systemic Immune Activation. Adv Healthc Mater 2024:e2400784. [PMID: 38896790 DOI: 10.1002/adhm.202400784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 06/18/2024] [Indexed: 06/21/2024]
Abstract
Immunotherapy has emerged as a powerful weapon against lung cancer, yet only a fraction of patients respond to the treatment. Poly(I:C) (PIC) effectively triggers both innate and adaptive immunity. It can also induce immunogenic cell death (ICD) in tumor cells. However, its efficacy is hindered by its instability in vivo and limited cellular uptake. To address this, PIC is encapsulated in cRGD-functionalized polymersomes (t-PPIC), which significantly increases its stability and uptake, thus activating dendritic cells (DCs) and inducing apoptosis of lung tumor cells in vitro. In a murine LLC lung tumor model, systemic administration of t-PPIC effectively suppresses tumor growth and leads to survival benefits, with 40% of the mice becoming tumor-free. Notably, t-PPIC provokes stronger apoptosis and ICD in tumor tissue and elicits a more potent stimulation of DCs, recruitment of natural killer (NK) cells, and activation of CD8+ T cells, compared to free PIC and nontargeted PPIC controls. Furthermore, when combined with immune checkpoint inhibitors or radiotherapy, t-PPIC amplifies the antitumor immune response, resulting in complete regression in 60% of the mice. These compelling findings underscore the potential of integrin-targeted polymersomal PIC to enhance antitumor immunity by simultaneously inducing ICD and systemic immune activation.
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Affiliation(s)
- Jingyi Wang
- Biomedical Polymers Laboratory, College of Chemistry, Chemical Engineering and Materials Science, and State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou, 215006, P. R. China
| | - Beibei Guo
- Biomedical Polymers Laboratory, College of Chemistry, Chemical Engineering and Materials Science, and State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou, 215006, P. R. China
| | - Zhiwei Sun
- Biomedical Polymers Laboratory, College of Chemistry, Chemical Engineering and Materials Science, and State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou, 215006, P. R. China
| | - Songsong Zhao
- Biomedical Polymers Laboratory, College of Chemistry, Chemical Engineering and Materials Science, and State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou, 215006, P. R. China
| | - Li Cao
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215006, P. R. China
| | - Zhiyuan Zhong
- Biomedical Polymers Laboratory, College of Chemistry, Chemical Engineering and Materials Science, and State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou, 215006, P. R. China
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215006, P. R. China
- International College of Pharmaceutical Innovation, Soochow University, Suzhou, 215006, P. R. China
| | - Fenghua Meng
- Biomedical Polymers Laboratory, College of Chemistry, Chemical Engineering and Materials Science, and State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou, 215006, P. R. China
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3
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Chen Q, Jiang LY, Cao C, Liu FY, Li DR, Wu PF, Jiang KR. Peptidase inhibitor 16 promotes proliferation of pancreatic ductal adenocarcinoma cells through OASL signaling. Mol Carcinog 2024; 63:938-950. [PMID: 38353288 DOI: 10.1002/mc.23699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 01/16/2024] [Accepted: 01/31/2024] [Indexed: 04/13/2024]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is a highly invasive cancer with a poor prognosis and a 5-year survival rate of less than 11%. As a member of the CAP superfamily of proteins, the role of peptidase inhibitor 16 (Pi16) in tumor progression is still unclear. Immunohistochemistry and quantitative RT-PCR methods were used to detect the expression levels of Pi16 protein and mRNA in PDAC patients. CRISPR/Cas9 technology was used to knock out the expression of Pi16 in PDAC cell lines. In vivo and in vitro experiments were used to verify the effect of Pi16 on PDAC proliferation ability. By RNA sequencing, we found that oligoadenylate synthetase L (OASL) can serve as a potential downstream target of Pi16. The expression of Pi16 was higher in PDAC tissues than in matched adjacent tissues. High expression of Pi16 was associated with PDAC progression and poor prognosis. Overexpression of Pi16 could promote the proliferation of PDAC cells in vitro and in vivo. Bioinformatics analysis and coimmunoprecipitation assays showed that Pi16 could bind to OASL. Moreover, the functional recovery test confirmed that Pi16 could promote the proliferation of PDAC via OASL. Our present study demonstrates that Pi16 might participate in the occurrence and development of PDAC by regulating cell proliferation by binding to OASL, indicating that Pi16 might be a promising novel therapeutic target for PDAC.
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Affiliation(s)
- Qun Chen
- Pancreas Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Lu-Yang Jiang
- Pancreas Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Cheng Cao
- Pancreas Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Feng-Yuan Liu
- Pancreas Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Dan-Rui Li
- Pancreas Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Peng-Fei Wu
- Pancreas Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Kui-Rong Jiang
- Pancreas Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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Kawai T, Ikegawa M, Ori D, Akira S. Decoding Toll-like receptors: Recent insights and perspectives in innate immunity. Immunity 2024; 57:649-673. [PMID: 38599164 DOI: 10.1016/j.immuni.2024.03.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/18/2024] [Accepted: 03/05/2024] [Indexed: 04/12/2024]
Abstract
Toll-like receptors (TLRs) are an evolutionarily conserved family in the innate immune system and are the first line of host defense against microbial pathogens by recognizing pathogen-associated molecular patterns (PAMPs). TLRs, categorized into cell surface and endosomal subfamilies, recognize diverse PAMPs, and structural elucidation of TLRs and PAMP complexes has revealed their intricate mechanisms. TLRs activate common and specific signaling pathways to shape immune responses. Recent studies have shown the importance of post-transcriptional regulation in TLR-mediated inflammatory responses. Despite their protective functions, aberrant responses of TLRs contribute to inflammatory and autoimmune disorders. Understanding the delicate balance between TLR activation and regulatory mechanisms is crucial for deciphering their dual role in immune defense and disease pathogenesis. This review provides an overview of recent insights into the history of TLR discovery, elucidation of TLR ligands and signaling pathways, and their relevance to various diseases.
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Affiliation(s)
- Taro Kawai
- Laboratory of Molecular Immunobiology, Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology (NAIST), Nara 630-0192, Japan; Life Science Collaboration Center (LiSCo), Nara Institute of Science and Technology (NAIST), Nara 630-0192, Japan.
| | - Moe Ikegawa
- Laboratory of Molecular Immunobiology, Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology (NAIST), Nara 630-0192, Japan
| | - Daisuke Ori
- Laboratory of Molecular Immunobiology, Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology (NAIST), Nara 630-0192, Japan
| | - Shizuo Akira
- Center for Advanced Modalities and DSS (CAMaD), Osaka University, Osaka 565-0871, Japan; Laboratory of Host Defense, Immunology Frontier Research Center (IFReC), Osaka University, Osaka 565-0871, Japan; Department of Host Defense, Research Institute for Microbial Diseases (RIMD), Osaka University, Osaka 565-0871, Japan.
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5
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Inoue K, Ito H, Iwai M, Tanaka M, Mori Y, Todo T. Neoadjuvant use of oncolytic herpes virus G47Δ prevents local recurrence after insufficient resection in tongue cancer models. Mol Ther Oncolytics 2023; 30:72-85. [PMID: 37583387 PMCID: PMC10423690 DOI: 10.1016/j.omto.2023.07.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 07/17/2023] [Indexed: 08/17/2023] Open
Abstract
A complete resection of tongue cancer is often difficult. We investigate the usefulness of administering G47Δ (teserpaturev), a triple-mutated oncolytic herpes simplex virus type 1, prior to resection. G47Δ exhibits good cytopathic effects and replication capabilities in all head and neck cancer cell lines tested. In an orthotopic SCCVII tongue cancer model of C3H/He mice, an intratumoral inoculation with G47Δ significantly prolongs the survival. Further, mice with orthotopic tongue cancer received neoadjuvant G47Δ (or mock) therapy with or without "hemilateral" resection, the maximum extent avoiding surgical deaths. Neoadjuvant G47Δ and resection led to 10/10 survival (120 days), whereas the survivals for G47Δ alone and resection alone were 6/10 and 5/10, respectively: all control animals died by day 11. Furthermore, 100% survival was achieved with neoadjuvant G47Δ therapy even when the resection area was narrowed to "partial," providing insufficient resection margins, whereas hemilateral resection alone caused death by local recurrence in half of the animals. G47Δ therapy caused increased number of tumor-infiltrating CD8+ and CD4+ cells, increased F4/80+ cells within the residual tongues, and increased expression of immune-related genes in and around the tumor. These results imply that neoadjuvant use of G47Δ is useful for preventing local recurrence after tongue cancer surgery.
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Affiliation(s)
- Kosuke Inoue
- Division of Innovative Cancer Therapy, Advanced Clinical Research Center, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
- Department of Oral and Maxillofacial Surgery, Jichi Medical University Hospital, Tochigi 329-0498, Japan
| | - Hirotaka Ito
- Division of Innovative Cancer Therapy, Advanced Clinical Research Center, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
| | - Miwako Iwai
- Division of Innovative Cancer Therapy, Advanced Clinical Research Center, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
| | - Minoru Tanaka
- Division of Innovative Cancer Therapy, Advanced Clinical Research Center, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
- Project Division of Oncolytic Virus Development, Advanced Clinical Research Center, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
| | - Yoshiyuki Mori
- Department of Oral and Maxillofacial Surgery, Jichi Medical University Hospital, Tochigi 329-0498, Japan
| | - Tomoki Todo
- Division of Innovative Cancer Therapy, Advanced Clinical Research Center, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
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Haroun R, Naasri S, Oweida AJ. Toll-Like Receptors and the Response to Radiotherapy in Solid Tumors: Challenges and Opportunities. Vaccines (Basel) 2023; 11:vaccines11040818. [PMID: 37112730 PMCID: PMC10146579 DOI: 10.3390/vaccines11040818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Revised: 04/05/2023] [Accepted: 04/05/2023] [Indexed: 04/29/2023] Open
Abstract
Toll-like receptors (TLRs) are indispensable for the activation, maintenance and halting of immune responses. TLRs can mediate inflammation by recognizing molecular patterns in microbes (pathogen-associated molecular patterns: PAMPs) and endogenous ligands (danger-associated molecular patterns: DAMPs) released by injured or dead cells. For this reason, TLR ligands have attracted much attention in recent years in many cancer vaccines, alone or in combination with immunotherapy, chemotherapy and radiotherapy (RT). TLRs have been shown to play controversial roles in cancer, depending on various factors that can mediate tumor progression or apoptosis. Several TLR agonists have reached clinical trials and are being evaluated in combination with standard of care therapies, including RT. Despite their prolific and central role in mediating immune responses, the role of TLRs in cancer, particularly in response to radiation, remains poorly understood. Radiation is recognized as either a direct stimulant of TLR pathways, or indirectly through the damage it causes to target cells that subsequently activate TLRs. These effects can mediate pro-tumoral and anti-tumoral effects depending on various factors such as radiation dose and fractionation, as well as host genomic features. In this review, we examine how TLR signaling affects tumor response to RT, and we provide a framework for the design of TLR-based therapies with RT.
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Affiliation(s)
- Ryma Haroun
- Department of Nuclear Medicine and Radiobiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC J1N 0Y8, Canada
| | - Sahar Naasri
- Department of Nuclear Medicine and Radiobiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC J1N 0Y8, Canada
| | - Ayman J Oweida
- Department of Nuclear Medicine and Radiobiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC J1N 0Y8, Canada
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Xie C, Liang C, Wang R, Yi K, Zhou X, Li X, Chen Y, Miao D, Zhong C, Zhu J. Resveratrol suppresses lung cancer by targeting cancer stem-like cells and regulating tumor microenvironment. J Nutr Biochem 2023; 112:109211. [PMID: 36370924 DOI: 10.1016/j.jnutbio.2022.109211] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 06/30/2022] [Accepted: 09/23/2022] [Indexed: 11/11/2022]
Abstract
Increasing evidence indicate that cancer stem cells (CSCs) are the key driver of tumor initiation and recurrence. The cellular and soluble components of the tumor microenvironment (TME) impact on cancer initiation and progression, such as cytokines and chemokines. Thus, targeting CSCs and TME is a novel anti-cancer approach. Resveratrol (RES), a bioactive phytochemical extracted from various plants, exhibits tumor-suppressing activities in lung cancer, yet the mechanism remains poorly understood. Our data showed that the expression level of IL-6 was positively correlated with the presence of lung cancer stem-like cells (LCSCs) in human lung cancer tissues. In vitro results showed that IL-6 was highly elevated in lung cancer sphere-forming cells and could enhance the stemness of LCSCs, including tumor sphere formation ability, the percentage of CD133 positive cells, and the expression of LCSC specific markers (CD133, ALDH1A1 and Nanog). Simultaneously, our results confirmed that RES effectively inhibited LCSC properties, downregulated Wnt/β-catenin signaling and reduced IL-6 level in vitro and in vivo. Furthermore, we found RES treatment attenuated the activation of Wnt/β-catenin signaling by LiCl (GSK3β agonist). IL-6-promoted LCSC properties and Wnt/β-catenin signaling was also reversed by RES. Taken together, these data illustrated that RES inhibited lung cancer by targeting LCSCs and IL-6 in TME. The novel findings from this study provided evidence that RES exhibited multi-target effects on suppression of lung cancer and could be a novel potent cancer-preventive compound.
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Affiliation(s)
- Chunfeng Xie
- Department of Nutrition and Food Safety, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Chunhua Liang
- Department of Nutrition and Food Safety, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Rong Wang
- State Key Laboratory of Reproductive Medicine, The Research Center for Bone and Stem Cells, Department of Anatomy, Histology and Embryology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Kefan Yi
- Department of Nutrition and Food Safety, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Xu Zhou
- Department of Nutrition and Food Safety, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Xiaoting Li
- Department of Nutrition and Food Safety, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yue Chen
- Department of Nutrition and Food Safety, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Dengshun Miao
- Research Center for Bone and Stem Cells, Department of Anatomy, Histology and Embryology, Key Laboratory for Aging & Disease, Nanjing Medical University, Nanjing, Jiangsu, China.
| | - Caiyun Zhong
- Department of Nutrition and Food Safety, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China; Cancer Research Division, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China.
| | - Jianyun Zhu
- Department of Laboratory, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, Jiangsu, China.
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Bignoux MJ, Otgaar TC, Bernert M, Weiss SFT, Ferreira E. Downregulation of LRP/LR with siRNA inhibits several cancer hallmarks in lung cancer cells. FEBS Open Bio 2023; 13:323-340. [PMID: 36579897 PMCID: PMC9900088 DOI: 10.1002/2211-5463.13544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 12/07/2022] [Accepted: 12/28/2022] [Indexed: 12/30/2022] Open
Abstract
The incidence and mortality rates of cancer are growing rapidly worldwide, with lung cancer being the most commonly occurring cancer in males. Human carcinomas circumvent the inhibitory pathways induced by DNA damage and senescence through the upregulation of telomerase activity. The 37 kDa/67 kDa laminin receptor (LRP/LR) is a cell surface receptor which plays a role in several cancer hallmarks, including metastasis, angiogenesis, cell viability maintenance, apoptotic evasion, and mediating telomerase activity. We have previously shown that the knockdown of LRP/LR with an LRP-specific siRNA significantly impedes adhesion and invasion, induces apoptosis, and inhibits telomerase activity in various cancer cell lines in vitro. Here, we investigated the effect of downregulating LRP/LR with LRP-specific siRNA in A549 lung cancer cells. Downregulation of LRP/LR resulted in a significant decrease in cell viability, migration potential, and telomerase activity, as well as a significant increase in apoptosis. Proteomic analysis further suggested the re-establishment of immune control over the lung cancer cells, a previously unidentified facet of LRP downregulation in cancer. Altogether, we suggest that targeting LRP/LR for downregulation may have therapeutic potential for inhibiting several cancer hallmarks.
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Affiliation(s)
- Monique J. Bignoux
- School of Molecular and Cell BiologyUniversity of the WitwatersrandJohannesburgSouth Africa
| | - Tyrone C. Otgaar
- School of Molecular and Cell BiologyUniversity of the WitwatersrandJohannesburgSouth Africa
| | - Martin Bernert
- School of Molecular and Cell BiologyUniversity of the WitwatersrandJohannesburgSouth Africa
| | - Stefan F. T. Weiss
- School of Molecular and Cell BiologyUniversity of the WitwatersrandJohannesburgSouth Africa
| | - Eloise Ferreira
- School of Molecular and Cell BiologyUniversity of the WitwatersrandJohannesburgSouth Africa
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Li Y, Jiang X, Luo T, Xia J, Lee MJ, Weichselbaum RR, Lin W. TLR3 agonist nanoscale coordination polymer synergizes with immune checkpoint blockade for immunotherapy of cancer. Biomaterials 2022; 290:121831. [DOI: 10.1016/j.biomaterials.2022.121831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 09/22/2022] [Accepted: 09/26/2022] [Indexed: 11/02/2022]
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Su R, Cai L, Xiong P, Liu Z, Chen S, Liu X, Lin R, Lei Z, Tian D, Su M. TLR3 Expression is a Potential Prognosis Biomarker and Shapes the Immune-Active Tumor Microenvironment in Esophageal Squamous Cell Carcinoma. J Inflamm Res 2022; 15:1437-1456. [PMID: 35250293 PMCID: PMC8896387 DOI: 10.2147/jir.s348786] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Accepted: 02/02/2022] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Toll-like receptor 3 (TLR3) not only plays a crucial role in innate immune and inflammation but also in anti-cancer immunity. Nevertheless, the clinicopathological outcome of TLR3 in ESCC is still ambiguous. METHODS Immunohistochemistry was performed to investigate TLR3 expression and its impact on survival in 137 ESCC patients (including paired esophageal tissues with different stages of early lesions from 37 patients). Furthermore, we downloaded ESCC RNA-seq datasets (including phenotype and survival data) from The Cancer Genome Atlas (TCGA). The relationship between TLR3 and prognosis, biological landscape, and immune infiltration was assessed to verify the immunohistochemical results of our tissue samples, explore the possible mechanism of prognostic outcomes, and predict the sensitivity of immunotherapy. RESULTS TLR3 protein expression displayed an increasing trend in the progression through different grades of cellular atypia, from normal, esophageal simple hyperplasia (ESSH), intraepithelial neoplasia (IEN) to ESCC (P < 0.0083). TLR3 protein had a positive association with inflammation level (Rho = 0.341, P < 0.001). TLR3 mRNA expression was significantly higher in comparison to adjacent normal tissues (P < 0.001). Cox regression analysis indicated high TLR3 protein and mRNA expression conferred good prognosis in our samples and TCGA, especially for advanced ESCC patients (TNM stage III and IV). Overexpression of TLR3 resulted in an immune-active microenvironment via the recruitment of immune-active cells including cytotoxic lymphocytes (CTLs), CD8+ T cells, NK cells, dendritic cells, and M1-type macrophages. TLR3 expression was correlated with the pro-inflammatory cytokines and chemokines relating to anti-tumor immunity. Moreover, GSEA analysis indicated upregulated expression of TLR3 could activate the apoptotic pathway. CONCLUSION High TLR3 expression in ESCC patients was associated with a more favorable prognosis, immune-active cell infiltration, and an activated apoptotic pathway. TLR3 has potential applications for immunotherapy and immune response prediction in patients with ESCC.
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Affiliation(s)
- Ruibing Su
- Institute of Clinical Pathology, Department of Pathology, Shantou University Medical College, Shantou, Guangdong, People’s Republic of China
| | - Lijun Cai
- Institute of Clinical Pathology, Department of Pathology, Shantou University Medical College, Shantou, Guangdong, People’s Republic of China
| | - Pan Xiong
- Institute of Clinical Pathology, Department of Pathology, Shantou University Medical College, Shantou, Guangdong, People’s Republic of China
| | - Zhiwei Liu
- Institute of Clinical Pathology, Department of Pathology, Shantou University Medical College, Shantou, Guangdong, People’s Republic of China
| | - Shaobin Chen
- Department of Thoracic Surgery, Cancer Hospital of Shantou University Medical College, Shantou, Guangdong, People’s Republic of China
| | - Xi Liu
- Institute of Clinical Pathology, Department of Pathology, Shantou University Medical College, Shantou, Guangdong, People’s Republic of China
| | - Runhua Lin
- Institute of Clinical Pathology, Department of Pathology, Shantou University Medical College, Shantou, Guangdong, People’s Republic of China
| | - Zhijin Lei
- Institute of Clinical Pathology, Department of Pathology, Shantou University Medical College, Shantou, Guangdong, People’s Republic of China
| | - Dongping Tian
- Institute of Clinical Pathology, Department of Pathology, Shantou University Medical College, Shantou, Guangdong, People’s Republic of China
| | - Min Su
- Institute of Clinical Pathology, Department of Pathology, Shantou University Medical College, Shantou, Guangdong, People’s Republic of China
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11
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Li J, Zhu M, Qu H, Yang H, Li Q, Liu L, Jin L, Wu Y. The double-stranded RNA-dependent protein kinase inhibitor alleviates endoplasmic reticulum stress and alleviates sepsis-induced renal injury. J Toxicol Sci 2021; 46:445-451. [PMID: 34602529 DOI: 10.2131/jts.46.445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
The double-stranded RNA-dependent protein kinase (PKR) is involved in inflammatory cytokine expression and disease pathogenesis in many conditions. The aim of this study was to explore the role of PKR in sepsis-induced renal tissue injury. Six-week-old C57BL/6J mice received PKR inhibitor (imoxin) and Endoplasmic reticulum (ER) inducer (tunicamycin) 2 hr prior to induction of inflammation via cecal ligation and puncture (CLP). Renal tissues were collected 24 hr after the CLP treatment and protein expression were assessed. The expression of creatinine (Cre) and blood urea nitrogen (BUN) in serum and inflammation factor in tissues was detected by ELISA, and the apoptosis of renal tissue was detected by TUNEL staining. PKR inhibitors reduce the expression of sepsis-induced ER stress in renal tissue, as well as the pathological changes and renal impairment in renal tissue. PKR inhibitors reduce the expression of sepsis-induced inflammatory response and sepsis-induced apoptosis in renal tissue by ER stress. In conclusion, PKR inhibitor alleviates ER stress and alleviates sepsis-induced renal injury.
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Affiliation(s)
- Jinghui Li
- Intensive Care Unit, Kunming Medical University Affiliated Yan'an Hospital, China
| | - Ming Zhu
- Intensive Care Unit, Kunming Medical University Affiliated Yan'an Hospital, China
| | - Hai Qu
- Intensive Care Unit, Kunming Medical University Affiliated Yan'an Hospital, China
| | - Heying Yang
- Intensive Care Unit, Kunming Medical University Affiliated Yan'an Hospital, China
| | - Qiuyu Li
- Intensive Care Unit, Kunming Medical University Affiliated Yan'an Hospital, China
| | - Lu Liu
- Intensive Care Unit, Kunming Medical University Affiliated Yan'an Hospital, China
| | - Lu Jin
- Intensive Care Unit, Kunming Medical University Affiliated Yan'an Hospital, China
| | - Yujuan Wu
- Intensive Care Unit, Kunming Medical University Affiliated Yan'an Hospital, China
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Li A, Wu H, Tian Q, Zhang Y, Zhang Z, Zhang X. Methylation Regulation of TLR3 on Immune Parameters in Lung Adenocarcinoma. Front Oncol 2021; 11:620200. [PMID: 34094905 PMCID: PMC8173059 DOI: 10.3389/fonc.2021.620200] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 04/26/2021] [Indexed: 12/12/2022] Open
Abstract
This study aims to analyze the methylation regulation of TLR3 in lung adenocarcinoma (LUAD) and to explore the association of TLR3 expression with immune microenvironment. TLR3 has a decreased expression in LUAD tissues and low expression of TLR3 is not only associated with poor prognosis in patients with LUAD, but also can be used as a diagnostic marker. Bisulfite sequencing PCR (BSP) results showed that the methylation level in the promoter of TLR3 was negatively correlated with the level of TLR3 mRNA in LUAD tissues. TIMER analysis showed that TLR3 was negatively correlated with the tumor purity of LUAD and positively with immune cell infiltration to some extent. ESTIMATE analysis also suggested that TLR3 expression and its methylation had significant correlation with immune score. The lower immune scores were associated with the late stage of LUAD and poor prognosis. The high expression of TLR3 might inhibit the development of LUAD by activating apoptosis pathway. The proteins interacted with TLR3 were mainly involved in the apoptosis pathway and positively correlated with the key genes (MYD88, Caspase 8, BIRC3, PIK3R1) in this pathway. Therefore, TLR3 as a key biomarker for prognosis and diagnosis in LUAD, might be considered as a potential epigenetic and immunotherapeutic target.
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Affiliation(s)
- Ang Li
- School of Public Health, North China University of Science and Technology, Tangshan, China.,College of Life Science, North China University of Science and Technology, Tangshan, China
| | - Hongjiao Wu
- School of Public Health, North China University of Science and Technology, Tangshan, China
| | - Qinqin Tian
- College of Life Science, North China University of Science and Technology, Tangshan, China
| | - Yi Zhang
- School of Basic Medical Sciences, North China University of Science and Technology, Tangshan, China
| | - Zhi Zhang
- Affiliated Tangshan Gongren Hospital, North China University of Science and Technology, Tangshan, China
| | - Xuemei Zhang
- School of Public Health, North China University of Science and Technology, Tangshan, China.,College of Life Science, North China University of Science and Technology, Tangshan, China
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