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Shin SJ, Ko J, Hwang HS, Huh J, Lee CW, Lee JK, Go H. Tumoural Pellino-1 expression and Pellino-1-expressive cytotoxic T-cells are associated with poor prognosis in diffuse large B-cell lymphoma. Pathology 2024; 56:374-381. [PMID: 38296676 DOI: 10.1016/j.pathol.2023.10.020] [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: 06/14/2023] [Revised: 09/25/2023] [Accepted: 10/18/2023] [Indexed: 02/02/2024]
Abstract
Pellino-1 plays a role in regulating inflammation and immune responses, and its effects on tumours are complex, with different outcomes reported in various studies. Additionally, the role of Pellino-1 in diffuse large B-cell lymphoma (DLBCL) has not been thoroughly investigated. We aimed to examine the expression of Pellino-1 in tumour cells and tumour-infiltrating lymphocytes (TILs) separately and identify the clinicopathological significance of Pellino-1 expression in DLBCL. We evaluated Pellino-1 expression in 104 patients with DLBCL. The density of specific cell types was quantitatively analysed using digital image analysis after a multiplex immunofluorescence staining with Pellino-1, CD20, CD8, FOXP3, and PD-1. Pellino-1 expression was mostly observed in CD20+ tumour cells and CD8+ TILs. The high CD8+/Pellino-1+ group was significantly associated with the non-GCB subtype and higher numbers of Foxp3+ T-cells. Patients with high CD20+/Pellino-1+ and high CD8+/Pellino-1+ cell densities had significantly shorter event-free survival (EFS) rates. The multivariate Cox-regression analysis showed that CD20+/Pellino-1+ cell density and CD8+/Pellino-1+ cell density were independent poor prognostic factors for EFS. Furthermore, patients with low densities of both CD20+/Pellino-1+ and CD8+/Pellino-1+ cells demonstrated a prognosis superior to that of patients with high Pellino-1+ cell densities, either alone or in combination. Additionally, the multivariate analysis demonstrated that the combination of CD20+/Pellino-1+ and CD8+/Pellino-1+ cell densities was an independent prognostic factor for EFS and overall survival. Pellino-1 expression was observed in both tumour cells and TILs, particularly in cytotoxic T-cells, and was correlated with poor outcomes in DLBCL. Thus, Pellino-1 might have an oncogenic effect on DLBCL and might be a potential target for improving cytotoxic T-cell activity.
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Affiliation(s)
- Su-Jin Shin
- Department of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jiwon Ko
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea; Asan Institute for Life Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Hee Sang Hwang
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jooryung Huh
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Chang-Woo Lee
- Department of Molecular Cell Biology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea; Research Institute, Curogen Co, Suwon, Republic of Korea
| | - Jin-Kwan Lee
- Department of Molecular Cell Biology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea; Research Institute, Curogen Co, Suwon, Republic of Korea
| | - Heounjeong Go
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
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2
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Basu B, Kal S, Karmakar S, Basu M, Ghosh MK. E3 ubiquitin ligases in lung cancer: Emerging insights and therapeutic opportunities. Life Sci 2024; 336:122333. [PMID: 38061537 DOI: 10.1016/j.lfs.2023.122333] [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: 10/11/2023] [Revised: 11/29/2023] [Accepted: 12/04/2023] [Indexed: 12/18/2023]
Abstract
Aim In this review, we have attempted to provide the readers with an updated account of the role of a family of proteins known as E3 ligases in different aspects of lung cancer progression, along with insights into the deregulation of expression of these proteins during lung cancer. A detailed account of the therapeutic strategies involving E3 ligases that have been developed or currently under development has also been provided in this review. MATERIALS AND METHODS: The review article employs extensive literature search, along with differential gene expression analysis of lung cancer associated E3 ligases using the DESeq2 package in R, and the Gene Expression Profiling Interactive Analysis (GEPIA) database (http://gepia.cancer-pku.cn/). Protein expression analysis of CPTAC lung cancer samples was carried out using the UALCAN webtool (https://ualcan.path.uab.edu/index.html). Assessment of patient overall survival (OS) in response to high and low expression of selected E3 ligases was performed using the online Kaplan-Meier plotter (https://kmplot.com/analysis/index.php?p=background). KEY FINDINGS: SIGNIFICANCE: The review provides an in-depth understanding of the role of E3 ligases in lung cancer progression and an up-to-date account of the different therapeutic strategies targeting oncogenic E3 ligases for improved lung cancer management.
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Affiliation(s)
- Bhaskar Basu
- Cancer Biology and Inflammatory Disorder Division, Council of Scientific and Industrial Research-Indian Institute of Chemical Biology (CSIR-IICB), TRUE Campus, CN-6, Sector-V, Salt Lake, Kolkata- 700091 & 4, Raja S.C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Satadeepa Kal
- Cancer Biology and Inflammatory Disorder Division, Council of Scientific and Industrial Research-Indian Institute of Chemical Biology (CSIR-IICB), TRUE Campus, CN-6, Sector-V, Salt Lake, Kolkata- 700091 & 4, Raja S.C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Subhajit Karmakar
- Cancer Biology and Inflammatory Disorder Division, Council of Scientific and Industrial Research-Indian Institute of Chemical Biology (CSIR-IICB), TRUE Campus, CN-6, Sector-V, Salt Lake, Kolkata- 700091 & 4, Raja S.C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Malini Basu
- Department of Microbiology, Dhruba Chand Halder College, Dakshin Barasat, South 24 Parganas, PIN -743372, India
| | - Mrinal K Ghosh
- Cancer Biology and Inflammatory Disorder Division, Council of Scientific and Industrial Research-Indian Institute of Chemical Biology (CSIR-IICB), TRUE Campus, CN-6, Sector-V, Salt Lake, Kolkata- 700091 & 4, Raja S.C. Mullick Road, Jadavpur, Kolkata 700032, India.
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Yan L, Cui Y, Feng J. Biology of Pellino1: a potential therapeutic target for inflammation in diseases and cancers. Front Immunol 2023; 14:1292022. [PMID: 38179042 PMCID: PMC10765590 DOI: 10.3389/fimmu.2023.1292022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 12/04/2023] [Indexed: 01/06/2024] Open
Abstract
Pellino1 (Peli1) is a highly conserved E3 Ub ligase that exerts its biological functions by mediating target protein ubiquitination. Extensive evidence has demonstrated the crucial role of Peli1 in regulating inflammation by modulating various receptor signaling pathways, including interleukin-1 receptors, Toll-like receptors, nuclear factor-κB, mitogen-activated protein kinase, and phosphoinositide 3-kinase/AKT pathways. Peli1 has been implicated in the development of several diseases by influencing inflammation, apoptosis, necrosis, pyroptosis, autophagy, DNA damage repair, and glycolysis. Peli1 is a risk factor for most cancers, including breast cancer, lung cancer, and lymphoma. Conversely, Peli1 protects against herpes simplex virus infection, systemic lupus erythematosus, esophageal cancer, and toxic epidermolysis bullosa. Therefore, Peli1 is a potential therapeutic target that warrants further investigation. This comprehensive review summarizes the target proteins of Peli1, delineates their involvement in major signaling pathways and biological processes, explores their role in diseases, and discusses the potential clinical applications of Peli1-targeted therapy, highlighting the therapeutic prospects of Peli1 in various diseases.
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Affiliation(s)
| | | | - Juan Feng
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, China
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4
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Zhou W, Hu Y, Wang B, Yuan L, Ma J, Meng X. Aberrant expression of PELI1 caused by Jagged1 accelerates the malignant phenotype of pancreatic cancer. Cell Signal 2023; 111:110877. [PMID: 37657587 DOI: 10.1016/j.cellsig.2023.110877] [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: 05/09/2023] [Revised: 08/13/2023] [Accepted: 08/29/2023] [Indexed: 09/03/2023]
Abstract
Pancreatic cancer is one of the most aggressive cancers. PELI1 has been reported to promote cell survival and proliferation in multiple cancers. As of now, the role of PELI1 in pancreatic cancer is largely unknown. Here, we found that the PELI1 mRNA was higher expressed in pancreatic tumor tissues than in adjacent normal tissues, and the high PELI1 level in pancreatic cancer patients had a short survival time compared with the low level. Moreover, the results showed that PELI1 promoted cell proliferation, migration, and invasion, and inhibited apoptosis in vitro. Xenograft tumor experiments were used to determine the biological function of PELI1, and the results showed that PELI1 promoted tumor growth in vivo. Additionally, we found that Jagged1 activated PELI1 transcription in pancreatic cancer cells. To sum up, our results show that PELI1 affects the malignant phenotype of pancreatic cancer.
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Affiliation(s)
- Wenyang Zhou
- Department of Pathology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Yuying Hu
- Department of Pathology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Baosheng Wang
- Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Lina Yuan
- Department of Pathology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Jia Ma
- Department of Gastroenterology, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning Province, China.
| | - Xiangpeng Meng
- Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China.
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PELI1 and EGFR cooperate to promote breast cancer metastasis. Oncogenesis 2023; 12:9. [PMID: 36841821 PMCID: PMC9968314 DOI: 10.1038/s41389-023-00457-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 02/14/2023] [Accepted: 02/15/2023] [Indexed: 02/27/2023] Open
Abstract
Pellino-1 (PELI1) is an E3 ubiquitin ligase acting as a key regulator for the inflammation and autoimmunity via the ubiquitination of the substrate proteins. There is increasing evidence to support that PELI1 functions as an oncoprotein in tumorigenesis and metastasis. However, the molecular mechanism underlying the high expression and oncogenic roles of PELI1 in cancers remains limited. Herein, we revealed a novel regulation mechanism by which PELI1 and EGFR cooperate to promote breast cancer metastasis. EGFR is positively correlated with PELI1 expression in breast cancers, and its activation led to the phosphorylation of PELI1 at Tyr154 and Thr264, which subsequently activated its E3 ubiquitin ligase. Simultaneously, PELI1 physically interacted with and enhanced the stability of EGFR via the K63-linked polyubiquitination in reverse. The co-inhibition of the PELI1-EGFR showed synergetic effect to repress breast cancer metastasis. Furthermore, we identified a compound S62 as a small molecule disruptor of PELI1/EGFR that effectively repressed breast cancer metastasis. Our study not only uncovered the emerging roles of PELI1/EGFR interaction in the progression of breast cancer, but also provided an effective strategy for the inhibition of metastasis in breast cancer.
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6
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Ma JH, Zhang YT, Wang LP, Sun QY, Zhang H, Li JJ, Han NN, Zhu YY, Xie XY, Li X. K63 Ubiquitination of P21 Can Facilitate Pellino-1 in the Context of Chronic Obstructive Pulmonary Disease and Lung Cellular Senescence. Cells 2022; 11:cells11193115. [PMID: 36231077 PMCID: PMC9563803 DOI: 10.3390/cells11193115] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Revised: 09/26/2022] [Accepted: 09/30/2022] [Indexed: 12/04/2022] Open
Abstract
Chronic obstructive pulmonary diseases (COPD) is a kind of age-related, airflow-obstruction disease mostly caused by cigarette smoke. However, the relationship between COPD and lung cellular senescence is still not fully understood. Here, we found silencing Pellino-1 could inhibit the protein level of P21. Then, through constructing cell lines expressed ubiquitin-HA, we found that the E3 ubiquitin ligase Pellino-1 could bind to senescence marker p21 and modify p21 by K63-site ubiquitination by co-IP assays. Furthermore, we found that p21-mediated lung cellular senescence could be inhibited by silencing Pellino-1 in a D-galactose senescence mice model. Moreover, by constructing a COPD mouse model with shPellino-1 adenovirus, we found that silencing Pellino-1 could inhibit COPD and inflammation via reduction of SASPs regulated by p21. Taken together, our study findings elucidated that silencing E3 ligase Pellino-1 exhibits therapeutic potential for treatment to attenuate the progression of lung cellular senescence and COPD.
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Affiliation(s)
- Jia-Hui Ma
- Marine College, Shandong University, Weihai 264200, China
| | - Yi-Ting Zhang
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 210009, China
| | - Lu-Ping Wang
- College of Biomedical Engineering and Instrumentation Science, Zhejiang University, Hangzhou 310000, China
| | - Qing-Yu Sun
- Marine College, Shandong University, Weihai 264200, China
| | - Hao Zhang
- Marine College, Shandong University, Weihai 264200, China
| | - Jian-Jiang Li
- Marine College, Shandong University, Weihai 264200, China
| | - Ning-Ning Han
- Marine College, Shandong University, Weihai 264200, China
| | - Yao-Yao Zhu
- Marine College, Shandong University, Weihai 264200, China
| | - Xiao-Yu Xie
- Marine College, Shandong University, Weihai 264200, China
| | - Xia Li
- Marine College, Shandong University, Weihai 264200, China
- School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
- Correspondence: ; Tel.: +86-531-88382612
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Chowdhury AA, Godbole NM, Chataut N, Kosanke S, Rodgers K, Awasthi S. Effects of SPA4 peptide on lipopolysaccharide-disrupted lung epithelial barrier, injury, and function in a human cell system and mouse model of lung injury. Physiol Rep 2022; 10:e15353. [PMID: 35838161 PMCID: PMC9284632 DOI: 10.14814/phy2.15353] [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: 03/12/2022] [Revised: 05/10/2022] [Accepted: 05/26/2022] [Indexed: 05/03/2023] Open
Abstract
Disrupted epithelial barrier, fluid accumulation, inflammation, and compromised physiology are hallmarks of lung injury. Here we investigated the structural stability of the Toll-like receptor-4 (TLR4)-interacting SPA4 peptide, its effect on Pseudomonas aeruginosa lipopolysaccharide (LPS)-disrupted epithelial barrier in a human cell system, and lung injury markers in a mouse model of LPS-induced lung inflammation. The structural properties of SPA4 peptide were investigated using circular dichroism and UV-VIS spectroscopy. The transepithelial electrical resistance (TEER), an indicator of barrier function, was measured after the cells were challenged with 1 μg/ml LPS and treated with 10 or 100 μM SPA4 peptide. The expression and localization of tight junction proteins were studied by immunoblotting and immunocytochemistry, respectively. Mice were intratracheally challenged with 5 μg LPS per g body weight and treated with 50 μg SPA4 peptide. The lung wet/dry weight ratios or edema, surfactant protein-D (SP-D) levels in serum, lung function, tissue injury, body weights, and temperature, and survival were determined as study parameters. The spectroscopy results demonstrated that the structure was maintained among different batches of SPA4 peptide throughout the study. Treatment with 100 μM SPA4 peptide restored the LPS-disrupted epithelial barrier, which correlated with the localization pattern of Zonula Occludens (ZO)-1 and occludin proteins. Correspondingly, SPA4 peptide treatment helped suppress the lung edema and levels of serum SP-D, improved some of the lung function parameters, and reduced the mortality risk against LPS challenge. Our results suggest that the anti-inflammatory activity of the SPA4 peptide facilitates the resolution of lung pathology.
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Affiliation(s)
- Asif Alam Chowdhury
- Department of Pharmaceutical SciencesUniversity of Oklahoma Health Sciences CenterOklahoma CityOKUSA
| | - Nachiket M. Godbole
- Department of Pharmaceutical SciencesUniversity of Oklahoma Health Sciences CenterOklahoma CityOKUSA
| | - Neha Chataut
- Department of Pharmaceutical SciencesUniversity of Oklahoma Health Sciences CenterOklahoma CityOKUSA
| | - Stanley Kosanke
- Division of Comparative MedicineUniversity of Oklahoma Health Sciences CenterOklahoma CityOKUSA
| | - Karla Rodgers
- Department of Biochemistry and Molecular BiologyUniversity of Oklahoma Health Sciences CenterOklahoma CityOKUSA
| | - Shanjana Awasthi
- Department of Pharmaceutical SciencesUniversity of Oklahoma Health Sciences CenterOklahoma CityOKUSA
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8
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Zhang E, Li X. The Emerging Roles of Pellino Family in Pattern Recognition Receptor Signaling. Front Immunol 2022; 13:728794. [PMID: 35197966 PMCID: PMC8860249 DOI: 10.3389/fimmu.2022.728794] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 01/14/2022] [Indexed: 12/03/2022] Open
Abstract
The Pellino family is a novel and well-conserved E3 ubiquitin ligase family and consists of Pellino1, Pellino2, and Pellino3. Each family member exhibits a highly conserved structure providing ubiquitin ligase activity without abrogating cell and structure-specific function. In this review, we mainly summarized the crucial roles of the Pellino family in pattern recognition receptor-related signaling pathways: IL-1R signaling, Toll-like signaling, NOD-like signaling, T-cell and B-cell signaling, and cell death-related TNFR signaling. We also summarized the current information of the Pellino family in tumorigenesis, microRNAs, and other phenotypes. Finally, we discussed the outstanding questions of the Pellino family in immunity.
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Affiliation(s)
- E Zhang
- Marine College, Shandong University, Weihai, China
| | - Xia Li
- Marine College, Shandong University, Weihai, China
- School of Pharmaceutical Sciences, Shandong University, Jinan, China
- *Correspondence: Xia Li,
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9
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Thirunavukkarasu M, Pradeep SR, Ukani G, Abunnaja S, Youssef M, Accorsi D, Swaminathan S, Lim ST, Parker V, Campbell J, Rishi MT, Palesty JA, Maulik N. Gene therapy with Pellino-1 improves perfusion and decreases tissue loss in Flk-1 heterozygous mice but fails in MAPKAP Kinase-2 knockout murine hind limb ischemia model. Microvasc Res 2022; 141:104311. [PMID: 34999110 PMCID: PMC9250804 DOI: 10.1016/j.mvr.2022.104311] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 12/30/2021] [Accepted: 01/02/2022] [Indexed: 10/19/2022]
Abstract
OBJECTIVES In the United States, over 8.5 million people suffer from peripheral arterial disease (PAD). Previously we reported that Pellino-1(Peli1) gene therapy reduces ischemic damage in the myocardium and skin flaps in Flk-1 [Fetal Liver kinase receptor-1 (Flk-1)/ Vascular endothelial growth factor receptor-2/VEGFR2] heterozygous (Flk-1+/-) mice. The present study compares the angiogenic response and perfusion efficiency following hind limb ischemia (HLI) in, Flk-1+/- and, MAPKAPKINASE2 (MK2-/-) knockout (KO) mice to their control wild type (WT). We also demonstrated the use of Peli1 gene therapy to improve loss of function following HLI. STUDY DESIGN AND METHODS Femoral artery ligation (HLI) was performed in both Flk-1+/-and MK2-/-mice along with their corresponding WT. Another set of Flk-1+/- and MK2-/- were injected with either Adeno-LacZ (Ad.LacZ) or Adeno-Peli1 (Ad.Peli1) after HLI. Hind limb perfusion was assessed by laser doppler imaging at specific time points. A standardized scoring scale is used to quantify the extent of ischemia. Histology analysis performed includes capillary density, fibrosis, pro-angiogenic and anti-apoptotic proteins. RESULTS Flk-1+/- and MK2-/- had a slower recovery of perfusion efficiency in the ischemic limbs than controls. Both Flk-1+/-and MK2-/-KO mice showed decreased capillary density and capillary myocyte ratios with increased fibrosis than their corresponding wild types. Ad.Peli1 injected ischemic Flk-1+/- limb showed improved perfusion, increased capillary density, and pro-angiogenic molecules with reduced fibrosis compared to Ad.LacZ group. No significant improvement in perfusion was observed in MK2-/- ischemic limb after Ad. Peli1 injection. CONCLUSION Deletion of Flk-1 and MK2 impairs neovascularization and perfusion following HLI. Treatment with Ad. Peli1 results in increased angiogenesis and improved perfusion in Flk-1+/- mice but fails to rectify perfusion in MK2 KO mice. Overall, Peli1 gene therapy is a promising candidate for the treatment of PAD.
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Affiliation(s)
- Mahesh Thirunavukkarasu
- Molecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut School of Medicine, University of Connecticut Health, Farmington 06030, CT, USA
| | - Seetur R Pradeep
- Molecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut School of Medicine, University of Connecticut Health, Farmington 06030, CT, USA
| | - Gopi Ukani
- Molecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut School of Medicine, University of Connecticut Health, Farmington 06030, CT, USA; Stanley J. Dudrick, Department of Surgery, Saint Mary's Hospital, Waterbury 06706, CT, USA
| | - Salim Abunnaja
- Molecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut School of Medicine, University of Connecticut Health, Farmington 06030, CT, USA; Stanley J. Dudrick, Department of Surgery, Saint Mary's Hospital, Waterbury 06706, CT, USA
| | - Mark Youssef
- Molecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut School of Medicine, University of Connecticut Health, Farmington 06030, CT, USA; Stanley J. Dudrick, Department of Surgery, Saint Mary's Hospital, Waterbury 06706, CT, USA
| | - Diego Accorsi
- Molecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut School of Medicine, University of Connecticut Health, Farmington 06030, CT, USA; Stanley J. Dudrick, Department of Surgery, Saint Mary's Hospital, Waterbury 06706, CT, USA
| | - Santosh Swaminathan
- Molecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut School of Medicine, University of Connecticut Health, Farmington 06030, CT, USA; Stanley J. Dudrick, Department of Surgery, Saint Mary's Hospital, Waterbury 06706, CT, USA
| | - Sue Ting Lim
- Molecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut School of Medicine, University of Connecticut Health, Farmington 06030, CT, USA; Stanley J. Dudrick, Department of Surgery, Saint Mary's Hospital, Waterbury 06706, CT, USA
| | - Virginia Parker
- Molecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut School of Medicine, University of Connecticut Health, Farmington 06030, CT, USA; Stanley J. Dudrick, Department of Surgery, Saint Mary's Hospital, Waterbury 06706, CT, USA
| | - Jacob Campbell
- Molecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut School of Medicine, University of Connecticut Health, Farmington 06030, CT, USA
| | - Muhammad Tipu Rishi
- Molecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut School of Medicine, University of Connecticut Health, Farmington 06030, CT, USA; Stanley J. Dudrick, Department of Surgery, Saint Mary's Hospital, Waterbury 06706, CT, USA
| | - J Alexander Palesty
- Stanley J. Dudrick, Department of Surgery, Saint Mary's Hospital, Waterbury 06706, CT, USA
| | - Nilanjana Maulik
- Molecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut School of Medicine, University of Connecticut Health, Farmington 06030, CT, USA.
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10
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Zheng T, Zhou Y, Xu X, Qi X, Liu J, Pu Y, Zhang S, Gao X, Luo X, Li M, Wang X, Dong L, Wang Y, Mao C. MiR-30c-5p loss-induced PELI1 accumulation regulates cell proliferation and migration via activating PI3K/AKT pathway in papillary thyroid carcinoma. J Transl Med 2022; 20:20. [PMID: 34991623 PMCID: PMC8740468 DOI: 10.1186/s12967-021-03226-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Accepted: 12/29/2021] [Indexed: 01/16/2023] Open
Abstract
Background The aberrant expression of E3 ubiquitin ligase Pellino-1 (PELI1) contributes to several human cancer development and progression. However, its expression patterns and functional importance in papillary thyroid cancer (PTC) remains unknown. Methods PELI1 expression profiles in PTC tissues were obtained and analyzed through the starBase v3.0 analysis. Real-time PCR, Immunohistochemical assays (IHC) and Western blot were used to investigate the mRNA and protein levels of PELI1 in PTC. The effects of PELI1 on PTC cell progression were evaluated through CCK-8, colony formation, Transwell, and Wound healing assay in vitro, and a PTC xenograft mouse model in vivo. The downstream target signal of PELI1 in PTC was analyzed by using Kyoto encyclopedia of genes and genomes (KEGG), and bioinformatics tools were used to identify potential miRNAs targeting PELI1. Human umbilical cord mesenchymal stem cells were modified by miR-30c-5p and the miR-30c-5p containing extracellular vesicles were collected (miR-30c-5p-EVs) by ultra-high-speed centrifugation method. Then, the effects of miR-30c-5p-EVs on PELI1 expression and PTC progression were evaluated both in vitro and in vivo. Results Both mRNA and protein expression of PELI1 were widely increased in PTC tissues, and overexpression of PELI1 was positively correlated with bigger tumor size and lymph node metastases. PELI1 promoted PTC cell proliferation and migration in vitro. While, PELI1 silencing significantly suppressed PTC growth in vivo accompanied with reduced expression of Ki-67 and matrix metallopeptidase 2 (MMP-2). Mechanistically, PI3K-AKT pathway was identified as the downstream target of PELI1, and mediated the functional influence of PELI1 in PTC cells. Moreover, we found that the expression of miR-30c-5p was inversely correlated with PELI1 in PTC samples and further confirmed that miR-30c-5p was a tumor-suppressive miRNA that directly targeted PELI1 to inhibit PTC cell proliferation and migration. Furthermore, we showed that miR-30c-5p-EVs could effectively downregulate PELI1 expression and suppress the PTC cell growth in vitro and in vivo. Conclusion This study not only supported the first evidence that miR-30c-5p loss-induced PELI1 accumulation facilitated cell proliferation and migration by activating the PI3K-AKT pathway in PTC but also provided novel insights into PTC therapy based on miR-carrying-hUCMSC-EVs. Supplementary Information The online version contains supplementary material available at 10.1186/s12967-021-03226-1.
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Affiliation(s)
- Tingting Zheng
- Department of Nuclear Medicine, The Affiliated Hospital of Jiangsu University, Zhenjiang, 212000, Jiangsu, People's Republic of China
| | - Youxing Zhou
- Department of Surgery, Jiangyuan Hospital Affiliated To Jiangsu Institute of Nuclear Medicine, Wuxi, 214063, Jiangsu, People's Republic of China
| | - Xiaowei Xu
- Department of Nuclear Medicine, The Affiliated Hospital of Jiangsu University, Zhenjiang, 212000, Jiangsu, People's Republic of China
| | - Xin Qi
- Jiangsu Key Laboratory of Pathogen Biology, Department of Pathogen Biology and Immunology, Nanjing Medical University, Nanjing, 211166, Jiangsu, People's Republic of China
| | - Jiameng Liu
- Department of Nuclear Medicine, The Affiliated Hospital of Jiangsu University, Zhenjiang, 212000, Jiangsu, People's Republic of China
| | - Yanan Pu
- Department of Emergency Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, Jiangsu, People's Republic of China
| | - Shan Zhang
- Department of Nuclear Medicine, The Affiliated Hospital of Jiangsu University, Zhenjiang, 212000, Jiangsu, People's Republic of China
| | - Xuerong Gao
- Department of Nuclear Medicine, The Affiliated Hospital of Jiangsu University, Zhenjiang, 212000, Jiangsu, People's Republic of China
| | - Xinkai Luo
- Department of Nuclear Medicine, The Affiliated Hospital of Jiangsu University, Zhenjiang, 212000, Jiangsu, People's Republic of China
| | - Mei Li
- Department of Pathology, The Affiliated Hospital of Jiangsu University, Zhenjiang, 212000, Jiangsu, People's Republic of China
| | - Xuefeng Wang
- Department of Nuclear Medicine, The Affiliated Hospital of Jiangsu University, Zhenjiang, 212000, Jiangsu, People's Republic of China.,Department of Central Laboratory, The Affiliated Hospital of Jiangsu University, Zhenjiang, 212000, Jiangsu, People's Republic of China
| | - Liyang Dong
- Department of Nuclear Medicine, The Affiliated Hospital of Jiangsu University, Zhenjiang, 212000, Jiangsu, People's Republic of China.
| | - Ying Wang
- Department of Respiratory Diseases, The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an, 223002, Jiangsu, People's Republic of China.
| | - Chaoming Mao
- Department of Nuclear Medicine, The Affiliated Hospital of Jiangsu University, Zhenjiang, 212000, Jiangsu, People's Republic of China.
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11
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Killing by Degradation: Regulation of Apoptosis by the Ubiquitin-Proteasome-System. Cells 2021; 10:cells10123465. [PMID: 34943974 PMCID: PMC8700063 DOI: 10.3390/cells10123465] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 12/02/2021] [Accepted: 12/03/2021] [Indexed: 12/13/2022] Open
Abstract
Apoptosis is a cell suicide process that is essential for development, tissue homeostasis and human health. Impaired apoptosis is associated with a variety of human diseases, including neurodegenerative disorders, autoimmunity and cancer. As the levels of pro- and anti-apoptotic proteins can determine the life or death of cells, tight regulation of these proteins is critical. The ubiquitin proteasome system (UPS) is essential for maintaining protein turnover, which can either trigger or inhibit apoptosis. In this review, we will describe the E3 ligases that regulate the levels of pro- and anti-apoptotic proteins and assisting proteins that regulate the levels of these E3 ligases. We will provide examples of apoptotic cell death modulations using the UPS, determined by positive and negative feedback loop reactions. Specifically, we will review how the stability of p53, Bcl-2 family members and IAPs (Inhibitor of Apoptosis proteins) are regulated upon initiation of apoptosis. As increased levels of oncogenes and decreased levels of tumor suppressor proteins can promote tumorigenesis, targeting these pathways offers opportunities to develop novel anti-cancer therapies, which act by recruiting the UPS for the effective and selective killing of cancer cells.
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12
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Liu J, Lu Y, Huang W, He Z. Comprehensive Analysis of Inhibitor of Apoptosis Protein Expression and Prognostic Significance in Non-Small Cell Lung Cancer. Front Genet 2021; 12:764270. [PMID: 34925455 PMCID: PMC8675358 DOI: 10.3389/fgene.2021.764270] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Accepted: 11/01/2021] [Indexed: 12/18/2022] Open
Abstract
Inhibitors of apoptosis proteins (IAPs) have been associated with tumor development and progression by affecting apoptosis through cell death signaling pathways. To date, eight IAPs (BIRC1-8) have been identified in mammalian cells. However, the role of IAPs in non-small cell lung cancer (NSCLC) development and progression has not been explored in depth. In this study, we used public datasets and bioinformatics tools to compare the expression, prognostic significance, and function of IAPs in NSCLC and its subtypes. Expression of IAPs in cancer and normal tissues and at different stages of NSCLC was compared with gene expression profiling interactive analysis, and their prognostic significance was analyzed with the Kaplan-Meier Plotter database. The correlations among IAPs were analyzed with the STRING database and SPSS19.0. Functional annotation of IAPs was analyzed by Gene Ontology and Kyoto Encyclopedia of Genes and Genomes enrichment on the basis of the DAVID tool. Among patients with lung adenocarcinoma (LUAD), the expression level of BIRC5 was higher than that in normal samples, and the expression of BIRC1 and BIRC5 significantly varied in different stages. Moreover, the BIRC1-3 and BIRC5 mRNA levels were associated with overall survival (OS), and the BIRC1-2 and BIRC5-6 mRNA levels were associated with progression-free survival (PFS). Among patients with lung squamous cell carcinoma (LUSC), the expression level of BIRC1 was lower and that of BIRC5 was higher than those in normal tissues, and BIRC5 expression significantly varied in different stages. BIRC1 expression was associated with OS, whereas BIRC2 and BIRC6 expression was associated with PFS. Enrichment analysis showed that most IAPs are associated with ubiquitin- and apoptosis-related pathways. Collectively, this study suggests BIRC5 as a potential diagnostic and staging marker, BIRC1 as a potential marker of OS, and BIRC2 and BIRC6 as potential PFS markers for patients with NSCLC. These highlight new targets for the early detection, treatment, and management of NSCLC.
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Affiliation(s)
- Jun Liu
- Medical College, Jiujiang University, Jiujiang, China
| | - Yi Lu
- Medical College, Jiujiang University, Jiujiang, China
| | - Wenan Huang
- Medical College, Jiujiang University, Jiujiang, China
| | - Zhibo He
- School of Literature and Communication, Jiujiang University, Jiujiang, China
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13
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Dai D, Zhou H, Yin L, Ye F, Yuan X, You T, Zhao X, Long W, Wang D, He X, Feng J, Chen D. PELI1 promotes radiotherapy sensitivity by inhibiting noncanonical NF-κB in esophageal squamous cancer. Mol Oncol 2021; 16:1384-1401. [PMID: 34738714 PMCID: PMC8936515 DOI: 10.1002/1878-0261.13134] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 09/23/2021] [Accepted: 11/03/2021] [Indexed: 11/06/2022] Open
Abstract
The low sensitivity of radiotherapy is the main cause of tumor tolerance against ionizing radiation (IR). However, the molecular mechanisms by which radiosensitivity is controlled remain elusive. Here, we observed that high expression of pellino E3 ubiquitin protein ligase 1 (PELI1) was correlated with improved prognosis in human esophageal squamous cell carcinoma stage III patients that received adjuvant radiotherapy. Moreover, we found PELI1‐mediated IR‐induced tumor cell apoptosis in vivo and in vitro. Mechanistically, PELI1 mediated the lysine 48 (Lys48)–linked polyubiquitination and degradation of NF‐κB–inducing kinase (NIK; also known as MAP3K14), the master kinase of the noncanonical NF‐κB pathway, thereby inhibiting IR‐induced activation of the noncanonical NF‐κB signaling pathway during radiotherapy. As a consequence, PELI1 inhibited the noncanonical NF‐κB–induced expression of the anti‐apoptotic gene BCL2 like 1 (Bclxl; also known as BCL2L1), leading to an enhancement of the IR‐induced apoptosis signaling pathway and ultimately promoting IR‐induced apoptosis in tumor cells. Therefore, Bclxl or NIK knockdown abolished the apoptosis‐resistant effect in PELI1‐knockdown tumor cells after radiotherapy. These findings establish PELI1 as a critical tumor intrinsic regulator in controlling the sensitivity of tumor cells to radiotherapy through modulating IR‐induced noncanonical NF‐κB expression.
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Affiliation(s)
- Dongfang Dai
- Department of Radiotherapy, The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing, China.,Institute of Oncology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Hongping Zhou
- Department of Radiotherapy, The Affiliated BenQ Hospital of Nanjing Medical University, China
| | - Li Yin
- Department of Radiotherapy, The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing, China
| | - Fei Ye
- Institute of Oncology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Xiao Yuan
- Institute of Oncology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Tao You
- Institute of Oncology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Xiaohui Zhao
- Institute of Oncology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Weiguo Long
- Institute of Oncology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Deqiang Wang
- Institute of Oncology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Xia He
- Department of Radiotherapy, The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing, China
| | - Jifeng Feng
- Department of Radiotherapy, The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing, China
| | - Deyu Chen
- Institute of Oncology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
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14
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Li S, Yang P, Xu L, Li M. Blocking of Birc3/TLR4/Myd88 signaling protects carbapenem-resistant klebsiella pneumoniae in a mouse model of infection. Transpl Immunol 2021; 69:101464. [PMID: 34500040 DOI: 10.1016/j.trim.2021.101464] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/01/2021] [Accepted: 09/02/2021] [Indexed: 11/16/2022]
Abstract
BACKGROUND Klebsiella pneumonia (KP) and carbapenem-resistant Klebsiella pneumonia (CRKP) lung infections significantly increase the morbidity and mortality of pneumonia. Recent studies have shown that baculoviral IAP repeat-containing 3 (Birc3) plays an important role in the prevention and treatment of pneumonia. However, the role of Birc3 in CRKP-induced pneumonia has not been widely reported. METHODS In vivo, we successfully established a mouse model of pneumonia induced by KP and CRKP. In vitro, we established a macrophage model treated with KP and CRKP. The phagocytosis of macrophages treated with CRKP was measured by Flow cytometry and coated plate counting. STRING and Co-IP assays were used to predict and verify the relationship between Birc3 and toll-like receptor 4 (TLR4) or myeloid differentiation factor 88 (Myd88). HE staining was used to detect the lung pathological changes of anti-Birc3 IgG inhibited CRKP-induced inflammatory cells. The levels of inflammatory factors and proteins were detected by ELISA and Western blot, respectively. RESULTS The phagocytic ability of macrophages was reduced, and the cytokine storm was enhanced in CRKP treated Raw264.7 cells. Macrophages treated with CRKP impaired phagocytosis. Birc3 could interact with TLR4 and MyD88. Anti-Birc3 IgG inhibited CRKP-induced inflammatory cell lung infiltration. In addition, mice treated with anti-Birc3 IgG improved the CRKP-induced inflammatory cell lung infiltration, bacterial spread, and cytokine storm by inhibiting the Birc3/TLR4/Myd88 signaling pathway. CONCLUSION The results suggest that Birc3 may serve as a target for the treatment of bacterial infection and lung inflammation in CRKP-induced pneumonia.
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Affiliation(s)
- Sujuan Li
- Department of Clinical Laboratory, The Second People's Hospital of Lanzhou City, Lanzhou 730046, China
| | - Ping Yang
- Department of Infection Management, The Second People's Hospital of Lanzhou City, Lanzhou 730046, China.
| | - Lijuan Xu
- Department of Clinical Laboratory, The Second People's Hospital of Lanzhou City, Lanzhou 730046, China
| | - Minmin Li
- Department of Clinical Laboratory, The Second People's Hospital of Lanzhou City, Lanzhou 730046, China
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15
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Zhu L, Zheng Y, Wu T, He J, Fang X, Zhou S, Wang K, Wang N. Immune-related genes STIM1, ITPKC and PELI1 polymorphisms are associated with risk of colorectal cancer. Eur J Cancer Prev 2021; 30:357-363. [PMID: 33470690 DOI: 10.1097/cej.0000000000000641] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVES STIM1, ITPKC and PELI1 are all immune-related genes that take part in the T cell activation, toll-like receptor and IL1 receptor pathways. The goal of this study was to evaluate the associations between STIM1, ITPKC and PELI1 polymorphisms and colorectal cancer (CRC) risk. METHODS Six single nucleotide polymorphisms (SNPs) in STIM1, ITPKC and PELI1 were genotyped using a MassARRAY platform in a discovery cohort including 480 CRC cases and 480 healthy individuals and validated in a replication cohort including 505 CRC cases and 510 controls. RESULTS The minor alleles of rs3794050, rs3750996 and rs2607420 were associated with an increased CRC risk (P < 0.05). In contrast, the minor allele of rs329497 was correlated with reduced disease risk (P = 0.025). Genetic model analysis showed that rs3794050 was related to an increased risk of disease in recessive and log-additive models (P < 0.05); rs3750996 had a strong correlation with CRC risk under all genetic models (P < 0.02); rs2607420 was correlated with an increased risk of disease in dominant and log-additive models (P < 0.01); whereas the protective effect of rs329497 on CRC risk was observed in dominant and log-additive models (P < 0.05). Finally, the association between the above SNPs and CRC risk was validated in a replication cohort (P < 0.05). CONCLUSIONS Our results could be helpful for the early screening of individuals with high CRC risk.
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Affiliation(s)
- Lei Zhu
- Department of Gastrointestinal and Breast Surgery, The First Affiliated Hospital, School of Medicine, Shihezi University
| | - Yuqin Zheng
- Department of Pathology, The First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, Xinjiang
| | - Tao Wu
- Department of General Surgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Jiaxing He
- Department of General Surgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Xiongchao Fang
- Department of General Surgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Shuai Zhou
- Department of General Surgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Ke Wang
- Department of General Surgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Nan Wang
- Department of General Surgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, China
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16
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Liu Y, Duan C, Zhang C. E3 Ubiquitin Ligase in Anticancer Drugdsla Resistance: Recent Advances and Future Potential. Front Pharmacol 2021; 12:645864. [PMID: 33935743 PMCID: PMC8082683 DOI: 10.3389/fphar.2021.645864] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Accepted: 02/24/2021] [Indexed: 12/31/2022] Open
Abstract
Drug therapy is the primary treatment for patients with advanced cancer. The use of anticancer drugs will inevitably lead to drug resistance, which manifests as tumor recurrence. Overcoming chemoresistance may enable cancer patients to have better therapeutic effects. However, the mechanisms underlying drug resistance are poorly understood. E3 ubiquitin ligases (E3s) are a large class of proteins, and there are over 800 putative functional E3s. E3s play a crucial role in substrate recognition and catalyze the final step of ubiquitin transfer to specific substrate proteins. The diversity of the set of substrates contributes to the diverse functions of E3s, indicating that E3s could be desirable drug targets. The E3s MDM2, FBWX7, and SKP2 have been well studied and have shown a relationship with drug resistance. Strategies targeting E3s to combat drug resistance include interfering with their activators, degrading the E3s themselves and influencing the interaction between E3s and their substrates. Research on E3s has led to the discovery of possible therapeutic methods to overcome the challenging clinical situation imposed by drug resistance. In this article, we summarize the role of E3s in cancer drug resistance from the perspective of drug class.
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Affiliation(s)
- Yuanqi Liu
- Department of Thoracic Surgery, Xiangya Hospital, Central South University, Changsha, China.,Hunan Engineering Research Center for Pulmonary Nodules Precise Diagnosis & Treatment, Changsha, China
| | - Chaojun Duan
- Department of Thoracic Surgery, Xiangya Hospital, Central South University, Changsha, China.,Hunan Engineering Research Center for Pulmonary Nodules Precise Diagnosis & Treatment, Changsha, China.,Department of Oncology, Xiangya Hospital, Central South University, Changsha, China
| | - Chunfang Zhang
- Department of Thoracic Surgery, Xiangya Hospital, Central South University, Changsha, China.,Hunan Engineering Research Center for Pulmonary Nodules Precise Diagnosis & Treatment, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Changsha, China
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17
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Marzano F, Caratozzolo MF, Pesole G, Sbisà E, Tullo A. TRIM Proteins in Colorectal Cancer: TRIM8 as a Promising Therapeutic Target in Chemo Resistance. Biomedicines 2021; 9:biomedicines9030241. [PMID: 33673719 PMCID: PMC7997459 DOI: 10.3390/biomedicines9030241] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 02/16/2021] [Accepted: 02/23/2021] [Indexed: 12/12/2022] Open
Abstract
Colorectal cancer (CRC) represents one of the most widespread forms of cancer in the population and, as all malignant tumors, often develops resistance to chemotherapies with consequent tumor growth and spreading leading to the patient’s premature death. For this reason, a great challenge is to identify new therapeutic targets, able to restore the drugs sensitivity of cancer cells. In this review, we discuss the role of TRIpartite Motifs (TRIM) proteins in cancers and in CRC chemoresistance, focusing on the tumor-suppressor role of TRIM8 protein in the reactivation of the CRC cells sensitivity to drugs currently used in the clinical practice. Since the restoration of TRIM8 protein levels in CRC cells recovers chemotherapy response, it may represent a new promising therapeutic target in the treatment of CRC.
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Affiliation(s)
- Flaviana Marzano
- Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies, National Research Council, CNR, 70126 Bari, Italy; (F.M.); (M.F.C.); (G.P.)
| | - Mariano Francesco Caratozzolo
- Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies, National Research Council, CNR, 70126 Bari, Italy; (F.M.); (M.F.C.); (G.P.)
| | - Graziano Pesole
- Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies, National Research Council, CNR, 70126 Bari, Italy; (F.M.); (M.F.C.); (G.P.)
- Department of Biosciences, Biotechnology and Biopharmaceutics, University of Bari, “Aldo Moro”, 70125 Bari, Italy
| | - Elisabetta Sbisà
- Institute for Biomedical Technologies, National Research Council, CNR, 70126 Bari, Italy;
| | - Apollonia Tullo
- Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies, National Research Council, CNR, 70126 Bari, Italy; (F.M.); (M.F.C.); (G.P.)
- Correspondence:
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18
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Cui H, Arnst K, Miller DD, Li W. Recent Advances in Elucidating Paclitaxel Resistance Mechanisms in Non-small Cell Lung Cancer and Strategies to Overcome Drug Resistance. Curr Med Chem 2020; 27:6573-6595. [DOI: 10.2174/0929867326666191016113631] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 09/06/2019] [Accepted: 09/12/2019] [Indexed: 12/12/2022]
Abstract
Paclitaxel (PTX) is a first-line drug for late-stage non-small cell lung cancer (NSCLC) patients
who do not benefit from targeted therapy or immunotherapy. However, patients invariably develop
resistance to PTX upon prolonged treatments. Although diverse mechanisms leading to PTX
resistance have been well-documented in the literature, strategies to overcome PTX resistance in
NSCLC based on these mechanisms are still challenging. In this article, we reviewed recent advancements
elucidating major mechanisms of PTX resistance in NSCLC, including the overexpression of
ABC transporters, alternations to tubulin structures, and the involvement of cytokines, miRNAs, kinase
signaling pathways, and epithelial-mesenchymal transition. Potential markers of PTX resistance or
PTX response that could help to direct treatment decisions and restore cellular sensitivity to PTX were
also discussed. Finally, we summarized the corresponding strategies to overcome PTX resistance in
NSCLC cells, which might provide new insights into clinical trials and benefit lung cancer patients in
the future.
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Affiliation(s)
- Hongmei Cui
- Department of Pharmaceutical Science, University of Tennessee Health Science Center, Memphis, Tennessee 38163, United States
| | - Kinsie Arnst
- Department of Pharmaceutical Science, University of Tennessee Health Science Center, Memphis, Tennessee 38163, United States
| | - Duane D. Miller
- Department of Pharmaceutical Science, University of Tennessee Health Science Center, Memphis, Tennessee 38163, United States
| | - Wei Li
- Department of Pharmaceutical Science, University of Tennessee Health Science Center, Memphis, Tennessee 38163, United States
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19
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Hu BC, Wu GH, Shao ZQ, Zheng Y, Liu JQ, Zhang R, Hong J, Yang XH, Sun RH, Mo SJ. Redox DAPK1 destabilizes Pellino1 to govern inflammation-coupling tubular damage during septic AKI. Am J Cancer Res 2020; 10:11479-11496. [PMID: 33052227 PMCID: PMC7546007 DOI: 10.7150/thno.49870] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 08/30/2020] [Indexed: 12/13/2022] Open
Abstract
Tubular damage initiated by inflammatory response and ischemic/hypoxic stress is a hallmark of septic acute kidney injury (AKI), albeit the molecular mechanism coupling the two events remains unclear. We investigated the intrinsic nature of tubular damage with respect to inflammatory/hypoxic stress during septic AKI. Methods: The apoptotic response of tubular cells to LPS stimuli was analyzed before and after hypoxia exposure. Cellular ubiquitination, co-immunoprecipitation, GST-pulldown, in vitro protein kinase assay, immunofluorescence and CRISPR technology were adopted to determine the molecular mechanism underlying this process. In vivo characterization was performed in wild-type and DAPK1-/- mice models of cecal ligation and puncture (CLP). Results: We found that the MyD88-dependent inflammatory response couples to tubular damage during LPS stimuli under hypoxia in a Fn14/SCFFbxw7α-dispensable manner via recruitment of caspase-8 with TRIF-RIP1 signalosome mediated by DAPK1, which directly binds to and phosphorylates Pellino1 at Ser39, leading to Pellino1 poly-ubiquitination and turnover. Either pharmacological deactivation or genetic ablation of DAPK1 makes tubular cells refractory to the LPS-induced damage in the context of hypoxia, while kinase activity of DAPK1 is essential for ruin execution. Targeting DAPK1 effectively protects mice against septic AKI and potentiates the efficacy of a MyD88 homodimerization inhibitor, ST2825. Conclusion: Our findings provide a rationale for the mechanism whereby inflammation intersects with hypoxic tubular damage during septic AKI through a previously unappreciated role of DAPK1-inducible Ser39 phosphorylation in Pellino1 turnover and underscore that combined targeting DAPK1 and MyD88 might be a feasible strategy for septic AKI management.
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20
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Wang J, Luo J, Sun Z, Sun F, Kong Z, Yu J. Identification of MTHFD2 as a novel prognosis biomarker in esophageal carcinoma patients based on transcriptomic data and methylation profiling. Medicine (Baltimore) 2020; 99:e22194. [PMID: 32925794 PMCID: PMC7489726 DOI: 10.1097/md.0000000000022194] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
DNA methylation is an important epigenetic regulatory mechanism in esophageal carcinoma (EC) and is associated with genomic instability and carcinogenesis. In the present study, we aimed to identify tumor biomarkers for predicting prognosis of EC patients.We downloaded mRNA expression profiles and DNA methylation profiles associated with EC from the Gene Expression Omnibus database. Differentially expressed and differentially methylated genes between tumor tissues and adjacent normal tissue samples were identified. Functional enrichment analyses were performed, followed by the construction of protein-protein interaction networks. Data were validated based on methylation profiles from The Cancer Genome Atlas. Candidate genes were further verified according to survival analysis and Cox regression analysis.We uncovered multiple genes with differential expression or methylation in tumor samples compared with normal samples. After taking the intersection of 3 differential gene sets, we obtained a total of 232 overlapping genes. Functional enrichment analysis revealed that these genes are related to pathways such as "glutathione metabolism," "p53 signaling pathway," and "focal adhesion." Furthermore, 8 hub genes with inversed expression and methylation correlation were identified as candidate genes. The abnormal expression levels of MSN, PELI1, and MTHFD2 were correlated with overall survival times in EC patients (P < .05). Only MTHFD2 was significantly associated with a pathologic stage according to univariate analysis (P = .037) and multivariate analysis (P = .043).Our study identified several novel EC biomarkers with prognostic value by integrated analysis of transcriptomic data and methylation profiles. MTHFD2 could serve as an independent biomarker for predicting prognosis and pathological stages of EC.
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Affiliation(s)
- Jianlin Wang
- Department of Radiotherapy, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University
- Center for Medical Physics, Nanjing Medical University, Changzhou, Jiangsu Province, China
| | - Judong Luo
- Department of Radiotherapy, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University
| | - Zhiqiang Sun
- Department of Radiotherapy, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University
| | - Fei Sun
- Department of Radiotherapy, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University
| | - Ze Kong
- Department of Radiotherapy, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University
| | - Jingping Yu
- Department of Radiotherapy, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University
- Center for Medical Physics, Nanjing Medical University, Changzhou, Jiangsu Province, China
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21
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Angrini M, Varthaman A, Cremer I. Toll-Like Receptors (TLRs) in the Tumor Microenvironment (TME): A Dragon-Like Weapon in a Non-fantasy Game of Thrones. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1263:145-173. [DOI: 10.1007/978-3-030-44518-8_9] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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22
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Selvaraju V, Thirunavukkarasu M, Joshi M, Oriowo B, Shaikh IA, Rishi MT, Tapias L, Coca-Soliz V, Saad I, Campbell J, Pradeep SR, Swaminathan S, Yee SP, McFadden DW, Alexander Palesty J, Maulik N. Deletion of newly described pro-survival molecule Pellino-1 increases oxidative stress, downregulates cIAP2/NF-κB cell survival pathway, reduces angiogenic response, and thereby aggravates tissue function in mouse ischemic models. Basic Res Cardiol 2020; 115:45. [DOI: 10.1007/s00395-020-0804-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Accepted: 06/03/2020] [Indexed: 12/16/2022]
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23
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Targeting the ubiquitin-proteasome pathway to overcome anti-cancer drug resistance. Drug Resist Updat 2020; 48:100663. [DOI: 10.1016/j.drup.2019.100663] [Citation(s) in RCA: 101] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 11/01/2019] [Accepted: 11/03/2019] [Indexed: 02/07/2023]
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24
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Zou T, Liu J, She L, Chen J, Zhu T, Yin J, Li X, Li X, Zhou H, Liu Z. A perspective profile of ADCY1 in cAMP signaling with drug-resistance in lung cancer. J Cancer 2019; 10:6848-6857. [PMID: 31839819 PMCID: PMC6909948 DOI: 10.7150/jca.36614] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Accepted: 08/26/2019] [Indexed: 12/11/2022] Open
Abstract
Adenylate cyclase 1 (ADCY1 or AC1) is a member of ADCY superfamily and was primarily found to be expressed in the brain. ADCY1 is responsible for catalyzing ATP to cyclic AMP (cAMP). As a secondary messenger, cAMP can regulate plenty of cellular activities. cAMP can perform its regulation in cellular transport through the binding to cAMP dependent protein kinases (PKAs), cAMP-activated guanine exchange factors (EPACs) and cyclic nucleotide-gated channels functioning in transduction of sensory signals (CNGs). Lung cancer is one of the leading factors of cancer-related death worldwide. Platinum-based chemotherapy is the first-line treatment for advanced lung cancer patients. In addition, surgical treatment, radiation treatment, and molecular targeted therapy are also therapeutic options for lung cancer patients in clinical settings. However, drug resistance and toxicity are the major obstacles that affect chemotherapy outcome and prognosis of lung cancer patients. And the therapeutic efficiency and adverse effects are varying with each individual. In recent years, investigations based on genetic sequencing have revealed the emerging role of ADCY1 mutations in affecting drug efficiency in various cancers such as lung cancer, esophageal cancer and colorectal cancer. The potential function of ADCY1 in chemotherapy resistance is of great importance to be noticed and investigated.
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Affiliation(s)
- Ting Zou
- National Institution of Drug Clinical Trial, Xiangya Hospital, Central South University, Changsha, Hunan, P.R.China
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, Hunan, P.R.China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, P.R.China
| | - Junyan Liu
- Department of Orthopaedics, The First Affiliated Hospital of the University of South China, Hengyang, Hunan, P.R.China
| | - Li She
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University
- Otolaryngology Major Disease Research Key Laboratory of Hunan Province
| | - Juan Chen
- Changsha, Hunan, P.R.China. Department of pharmacy, Xiangya hospital, Central South University, Changsha, Hunan, P.R.China
| | - Tao Zhu
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, Hunan, P.R.China
| | - Jiye Yin
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, Hunan, P.R.China
| | - Xi Li
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, Hunan, P.R.China
| | - Xiangping Li
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, Hunan, P.R.China
| | - Honghao Zhou
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, Hunan, P.R.China
| | - Zhaoqian Liu
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, Hunan, P.R.China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, P.R.China
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25
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Seo J, Kim MW, Bae KH, Lee SC, Song J, Lee EW. The roles of ubiquitination in extrinsic cell death pathways and its implications for therapeutics. Biochem Pharmacol 2018; 162:21-40. [PMID: 30452908 DOI: 10.1016/j.bcp.2018.11.012] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 11/14/2018] [Indexed: 01/24/2023]
Abstract
Regulation of cell survival and death, including apoptosis and necroptosis, is important for normal development and tissue homeostasis, and disruption of these processes can cause cancer, inflammatory diseases, and degenerative diseases. Ubiquitination is a cellular process that induces proteasomal degradation by covalently attaching ubiquitin to the substrate protein. In addition to proteolytic ubiquitination, nonproteolytic ubiquitination, such as M1-linked and K63-linked ubiquitination, has been shown to be important in recent studies, which have demonstrated its function in cell signaling pathways that regulate inflammation and cell death pathways. In this review, we summarize the TRAIL- and TNF-induced death receptor signaling pathways along with recent advances in this field and illustrate how different types of ubiquitination control cell death and survival. In particular, we provide an overview of the different types of ubiquitination, target residues, and modifying enzymes, including E3 ligases and deubiquitinating enzymes. Given the relevance of these regulatory pathways in human disease, we hope that a better understanding of the regulatory mechanisms of cell death pathways will provide insights into and therapeutic strategies for related diseases.
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Affiliation(s)
- Jinho Seo
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 120-749, Republic of Korea
| | - Min Wook Kim
- Metabolic Regulation Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea; Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon 34141, Republic of Korea
| | - Kwang-Hee Bae
- Metabolic Regulation Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea; Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon 34141, Republic of Korea
| | - Sang Chul Lee
- Metabolic Regulation Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea; Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon 34141, Republic of Korea
| | - Jaewhan Song
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 120-749, Republic of Korea
| | - Eun-Woo Lee
- Metabolic Regulation Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea.
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26
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Lim R, Barker G, Lappas M. Pellino 1 is a novel regulator of TNF and TLR signalling in human myometrial and amnion cells. J Reprod Immunol 2018; 127:24-35. [PMID: 29751216 DOI: 10.1016/j.jri.2018.04.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 02/15/2018] [Accepted: 04/10/2018] [Indexed: 02/07/2023]
Abstract
Preterm birth is the primary cause of neonatal deaths and morbidities. Pathological processes causally linked to preterm birth are inflammation and infection. Pellino-1 (Peli1) has previously been found to regulate the inflammatory response in non-gestational tissues in response to toll-like receptor (TLR) ligands and pro-inflammatory cytokines. The aims of this study were to determine the effect of labor on Peli1 expression in myometrium and fetal membranes, and the effect of Peli1 silencing by siRNA (siPELI1) on the production of pro-inflammatory and pro-labor mediators. The expression of Peli1 was found to be higher in myometrium and fetal membranes with term labor, compared to non-laboring samples. Peli1 mRNA and protein expression was also higher in amnion from women with preterm histological chorioamnionitis. In human primary myometrial cells, siPELI1 transfected cells showed a decrease in pro-inflammatory cytokine IL6, chemokines (CXCL8, CCL2) and adhesion molecule ICAM1 when in the presence of pro-inflammatory cytokine TNF, TLR2/6 ligand fsl-1, TLR5 ligand flagellin, and TLR3 ligand poly(I:C). Similarly in primary amnion cells, siPELI1 transfected cells decreased IL1B-induced expression and secretion of IL6 and CXCL8. In siPELI1 transfected myometrial cells, there was a decrease in prostaglandin PGF2α and its receptor, PTGFR mRNA expression when treated with TNF. There was a decrease in NF-κB RELA transcriptional activity in siPELI1 transfected cells in the presence of TNF, fsl-1 and flagellin, but not poly(I:C). Our study suggests a novel role for Peli1 in regulating pro-inflammatory and pro-labor mediators through TNF and TLR signalling.
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Affiliation(s)
- Ratana Lim
- Obstetrics, Nutrition and Endocrinology Group, Department of Obstetrics and Gynaecology, University of Melbourne, Victoria, Australia
| | - Gillian Barker
- Obstetrics, Nutrition and Endocrinology Group, Department of Obstetrics and Gynaecology, University of Melbourne, Victoria, Australia
| | - Martha Lappas
- Obstetrics, Nutrition and Endocrinology Group, Department of Obstetrics and Gynaecology, University of Melbourne, Victoria, Australia; Mercy Perinatal Research Centre, Mercy Hospital for Women, Heidelberg, Victoria, Australia.
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27
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Novel Insights Into E3 Ubiquitin Ligase in Cancer Chemoresistance. Am J Med Sci 2017; 355:368-376. [PMID: 29661351 DOI: 10.1016/j.amjms.2017.12.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 12/20/2017] [Accepted: 12/23/2017] [Indexed: 12/18/2022]
Abstract
Drug resistance can obstruct successful cancer chemotherapy. The ubiquitin-proteasome pathway has emerged as a crucial player that controls steady-state protein levels regulating multiple biological processes, such as cell cycle, cellular proliferation, apoptosis, and DNA damage response, which are involved in oncogenesis, cancer development, prognosis, and drug resistance. E3 ligases perform the final step in the ubiquitination cascade, and determine which protein becomes ubiquitylated by specifically binding the substrate protein. They are promising drug targets thanks to their ability to regulate protein stability and functions. Although patient survival has increased in recent years with the availability of novel agents, chemoresistance remains a major problem in cancer management. E3 ligases attract increasing attention with advances in chemoresistance knowledge. To explore the role of E3 ligase in cancer chemotherapy resistance and the underlying mechanism, we summarize the growing number of E3 ligases and their substrate proteins, which have emerged as crucial players in cancer chemoresistance and targeted therapies.
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28
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Mitchell CL, Latuszek CE, Vogel KR, Greenlund IM, Hobmeier RE, Ingram OK, Dufek SR, Pecore JL, Nip FR, Johnson ZJ, Ji X, Wei H, Gailing O, Werner T. α-amanitin resistance in Drosophila melanogaster: A genome-wide association approach. PLoS One 2017; 12:e0173162. [PMID: 28241077 PMCID: PMC5328632 DOI: 10.1371/journal.pone.0173162] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 02/15/2017] [Indexed: 11/17/2022] Open
Abstract
We investigated the mechanisms of mushroom toxin resistance in the Drosophila Genetic Reference Panel (DGRP) fly lines, using genome-wide association studies (GWAS). While Drosophila melanogaster avoids mushrooms in nature, some lines are surprisingly resistant to α-amanitin—a toxin found solely in mushrooms. This resistance may represent a pre-adaptation, which might enable this species to invade the mushroom niche in the future. Although our previous microarray study had strongly suggested that pesticide-metabolizing detoxification genes confer α-amanitin resistance in a Taiwanese D. melanogaster line Ama-KTT, none of the traditional detoxification genes were among the top candidate genes resulting from the GWAS in the current study. Instead, we identified Megalin, Tequila, and widerborst as candidate genes underlying the α-amanitin resistance phenotype in the North American DGRP lines, all three of which are connected to the Target of Rapamycin (TOR) pathway. Both widerborst and Tequila are upstream regulators of TOR, and TOR is a key regulator of autophagy and Megalin-mediated endocytosis. We suggest that endocytosis and autophagy of α-amanitin, followed by lysosomal degradation of the toxin, is one of the mechanisms that confer α-amanitin resistance in the DGRP lines.
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Affiliation(s)
- Chelsea L Mitchell
- Department of Biological Sciences, Michigan Technological University, 1400 Townsend Dr., Houghton, MI, United States of America
| | - Catrina E Latuszek
- Department of Biological Sciences, Michigan Technological University, 1400 Townsend Dr., Houghton, MI, United States of America
| | - Kara R Vogel
- Department of Neurology, University of Wisconsin School of Medicine and Public Health, 1300 University Ave., Madison, WI, United States of America
| | - Ian M Greenlund
- Department of Biological Sciences, Michigan Technological University, 1400 Townsend Dr., Houghton, MI, United States of America
| | - Rebecca E Hobmeier
- Department of Biological Sciences, Michigan Technological University, 1400 Townsend Dr., Houghton, MI, United States of America
| | - Olivia K Ingram
- Department of Biological Sciences, Michigan Technological University, 1400 Townsend Dr., Houghton, MI, United States of America
| | - Shannon R Dufek
- Department of Biological Sciences, Michigan Technological University, 1400 Townsend Dr., Houghton, MI, United States of America
| | - Jared L Pecore
- Department of Biological Sciences, Michigan Technological University, 1400 Townsend Dr., Houghton, MI, United States of America
| | - Felicia R Nip
- College of Human Medicine, Michigan State University, Clinical Center, East Lansing, MI, United States of America
| | - Zachary J Johnson
- U.S. Forest Service, Salt Lake Ranger District 6944 S, 3000 E, Salt Lake City, UT, United States of America
| | - Xiaohui Ji
- School of Forest Resources and Environmental Sciences, Michigan Technological University, 1400 Townsend Dr., Houghton, MI, United States of America
| | - Hairong Wei
- School of Forest Resources and Environmental Sciences, Michigan Technological University, 1400 Townsend Dr., Houghton, MI, United States of America
| | - Oliver Gailing
- School of Forest Resources and Environmental Sciences, Michigan Technological University, 1400 Townsend Dr., Houghton, MI, United States of America
| | - Thomas Werner
- Department of Biological Sciences, Michigan Technological University, 1400 Townsend Dr., Houghton, MI, United States of America
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