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Lin H, Deng H, Jiang Z, Hua P, Hu S, Ao H, Zhong M, Liu M, Guo G. Microarray analysis of tRNA-derived small RNA (tsRNA) in LPS-challenged macrophages treated with metformin. Gene 2024; 913:148399. [PMID: 38518902 DOI: 10.1016/j.gene.2024.148399] [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: 10/19/2023] [Revised: 03/08/2024] [Accepted: 03/19/2024] [Indexed: 03/24/2024]
Abstract
Metformin, a widely used anti-diabetic drug, has demonstrated its efficacy in addressing various inflammatory conditions. tRNA-derived small RNA (tsRNA), a novel type of small non-coding RNA, exhibits diverse regulatory functions and holds promise as both a diagnostic biomarker and a therapeutic target for various diseases. The purpose of this study is to investigate whether the abundance of tsRNAs changed in LPS versus LPS + metformin-treated cells, utilizing microarray technology. Firstly, we established an in vitro lipopolysaccharide (LPS)-induced inflammation model using RAW264.7 macrophages and assessed the protective effects of metformin against inflammatory damage. Subsequently, we extracted total RNA from both LPS-treated and metformin + LPS-treated cell samples for microarray analysis to identify differentially abundant tsRNAs (DA-tsRNAs). Furthermore, we conducted bioinformatics analysis to predict target genes for validated DA-tsRNAs and explore the biological functions and signaling pathways associated with DA-tsRNAs. Notably, metformin was found to inhibit the inflammatory response in RAW264.7 macrophages. The microarray results revealed a total of 247 DA-tsRNAs, with 58 upregulated and 189 downregulated tsRNAs in the Met + LPS group compared to the LPS group. The tsRNA-mRNA network was visualized, shedding light on potential interactions. The results of bioinformatics analysis suggested that these potential targets of specific tsRNAs were mainly related to inflammation and immunity. Our study provides compelling evidence that metformin exerts anti-inflammatory effects and modulates the abundance of tsRNAs in LPS-treated RAW264.7 macrophages. These findings establish a valuable foundation for using tsRNAs as potential biomarkers for metformin in the treatment of inflammatory conditions.
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Affiliation(s)
- Huan Lin
- Medical center of Burn plastic and wound repair, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Hongao Deng
- Medical center of Burn plastic and wound repair, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Zhengying Jiang
- Medical center of Burn plastic and wound repair, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Peng Hua
- Medical center of Burn plastic and wound repair, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Shiqiang Hu
- Medical center of Burn plastic and wound repair, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Haiyong Ao
- Jiangxi Key Laboratory of Nanobiomaterials & School of Materials Science and Engineering, East China Jiaotong University, Nanchang, China
| | - Meiling Zhong
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang, China
| | - Mingzhuo Liu
- Medical center of Burn plastic and wound repair, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China.
| | - Guanghua Guo
- Medical center of Burn plastic and wound repair, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China.
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Yuan L, Meng Y, Xiang J. KLF4 Induces Colorectal Cancer by Promoting EMT via STAT3 Activation. Dig Dis Sci 2024:10.1007/s10620-024-08473-y. [PMID: 38816600 DOI: 10.1007/s10620-024-08473-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Accepted: 05/01/2024] [Indexed: 06/01/2024]
Abstract
OBJECTIVE Krüppel-like factor 4 (KLF4) has been demonstrated to exert a pro-carcinogenic effect in solid tissues. However, the precise biological function and underlying mechanisms in colorectal cancer (CRC) remains elucidated. AIMS To investigate whether KLF4 participates in the proliferation and invasion of CRC. METHODS The expression of KLF4 was investigated using immunohistochemistry and immunoblotting. The clinical significance of KLF4 was evaluated. Furthermore, the effect of inhibiting or overexpressing KLF4 on tumor was examined. Immunoblotting and qPCR were used to detect Epithelial-mesenchymal transition-related proteins levels. Additionally, the molecular function of KLF4 is related to the STAT3 signaling pathway and was determined through JASPAR, GSEA analysis, and in vitro experiments. RESULTS KLF4 exhibits down-regulated expression in CRC and is part of the vessel invasion, TNM stage, and worse prognosis. In vitro studies have shown that KLF4 promotes cellular proliferation and invasion, as well as EMT processes. Xenograft tumor models confirmed the oncogenic role of KLF4 in nude mice. Furthermore, GSEA and JASPAR databases analysis reveal that the binding of KLF4 to the signal transducer and activator of transcription 3 (STAT3) promoter site induces activation of p-STAT3 signaling. Subsequent targeting of STAT3 confirmed its pivotal role in mediating the oncogenic effects exerted by KLF4. CONCLUSION The study suggests that KLF4 activates STAT3 signaling, inducing epithelial-mesenchymal transition, thereby promoting CRC progression.
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Affiliation(s)
- Lebin Yuan
- Department of Nail and Breast Surgery, Affiliated Xiangyang Central Hospital of Hubei University of Arts and Science, Xiangyang Center Hospital, Xiangyang, Hubei, China
| | - Yanqiu Meng
- Oncology Department, First Affiliated Hospital of Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
| | - Jiajia Xiang
- Molecular Centre Laboratory, The Second Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China.
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Wang X, Yu L, Chen Y, Xiong X, Ran H. The Kruppel-like factor 4-signal transducer and activator of transcription 5A axis promotes pancreatic fibrosis in mice with caerulein-induced chronic pancreatitis. Exp Anim 2023; 72:379-388. [PMID: 36948613 PMCID: PMC10435357 DOI: 10.1538/expanim.22-0147] [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: 10/24/2022] [Accepted: 03/19/2023] [Indexed: 03/24/2023] Open
Abstract
Pancreatic fibrosis (PF) is a hallmark of chronic pancreatitis (CP), but its molecular mechanism remains unclear. This study was conducted to explore the role of Kruppel-like factor 4 (KLF4) in PF in CP mice. The CP mouse model was established using caerulein. After KLF4 interference, pathological changes in pancreatic tissues and fibrosis degree were observed by hematoxylin-eosin staining and Masson staining, and levels of Collagen I, Collagen III, and alpha-smooth muscle actin, inflammatory cytokines, KLF4, signal transducer and activator of transcription 5A (STAT5) in pancreatic tissues were measured by enzyme-linked immunosorbent assay, quantitative real-time polymerase chain reaction, Western blot assay, and immunofluorescence. The enrichment of KLF4 on the STAT5 promoter and the binding of KLF4 to the STAT5 promoter were analyzed. The rescue experiments were performed by co-injection of sh-STAT5 and sh-KLF4 to confirm the regulatory mechanism of KLF4. KLF4 was upregulated in CP mice. Inhibition of KLF4 effectively attenuated pancreatic inflammation and PF in mice. KLF4 was enriched on the STAT5 promoter and enhanced the transcriptional and protein levels of STAT5. Overexpression of STAT5 reversed the inhibitory role of silencing KLF4 in PF. In summary, KLF4 promoted the transcription and expression of STAT5, which further facilitated PF in CP mice.
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Affiliation(s)
- Xiaoxiang Wang
- Department of Gastroenterology, Chengdu First People's Hospital, No.18 Wanxiang North Road, Wuhou District, Chengdu City, Sichuan Province, 610016, P.R. China
| | - Lan Yu
- Department of Gastroenterology, Chengdu First People's Hospital, No.18 Wanxiang North Road, Wuhou District, Chengdu City, Sichuan Province, 610016, P.R. China
| | - Yao Chen
- Department of Gastroenterology, Chengdu First People's Hospital, No.18 Wanxiang North Road, Wuhou District, Chengdu City, Sichuan Province, 610016, P.R. China
| | - Xing Xiong
- Department of Gastroenterology, Chengdu First People's Hospital, No.18 Wanxiang North Road, Wuhou District, Chengdu City, Sichuan Province, 610016, P.R. China
| | - Hongmei Ran
- Department of Gastroenterology, Chengdu First People's Hospital, No.18 Wanxiang North Road, Wuhou District, Chengdu City, Sichuan Province, 610016, P.R. China
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He Z, He J, Xie K. KLF4 transcription factor in tumorigenesis. Cell Death Discov 2023; 9:118. [PMID: 37031197 PMCID: PMC10082813 DOI: 10.1038/s41420-023-01416-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 03/22/2023] [Accepted: 03/24/2023] [Indexed: 04/10/2023] Open
Abstract
Krüppel-like transcriptional factor is important in maintaining cellular functions. Deletion of Krüppel-like transcriptional factor usually causes abnormal embryonic development and even embryonic death. KLF4 is a prominent member of this family, and embryonic deletion of KLF4 leads to alterations in skin permeability and postnatal death. In addition to its important role in embryo development, it also plays a critical role in inflammation and malignancy. It has been investigated that KLF4 has a regulatory role in a variety of cancers, including lung, breast, prostate, colorectal, pancreatic, hepatocellular, ovarian, esophageal, bladder and brain cancer. However, the role of KLF4 in tumorigenesis is complex, which may link to its unique structure with both transcriptional activation and transcriptional repression domains, and to the regulation of its upstream and downstream signaling molecules. In this review, we will summarize the structural and functional aspects of KLF4, with a focus on KLF4 as a clinical biomarker and therapeutic target in different types of tumors.
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Affiliation(s)
- Zhihong He
- Center for Pancreatic Cancer Research, The South China University of Technology School of Medicine, Guangzhou, China
- The South China University of Technology Comprehensive Cancer Center, Guangdong, China
| | - Jie He
- The Second Affiliated Hospital and Guangzhou First People's Hospital, South China University of Technology School of Medicine, Guangdong, China
| | - Keping Xie
- Center for Pancreatic Cancer Research, The South China University of Technology School of Medicine, Guangzhou, China.
- The South China University of Technology Comprehensive Cancer Center, Guangdong, China.
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Yao J, Kong Q, Wang Y, Zhang Y, Wang Q. Mechanism of Kruppel-Like Factor 4 in Pyroptosis of Nasal Mucosal Epithelial Cells in Mice With Allergic Rhinitis. Am J Rhinol Allergy 2023; 37:337-347. [PMID: 36799547 DOI: 10.1177/19458924221148568] [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: 02/18/2023]
Abstract
BACKGROUND Allergic rhinitis (AR) is a chronic nasal inflammation, characterized by nasal epithelial dysfunction. Gene therapy targeting transcription factors is a promising strategy for quenching allergic inflammation, including AR. OBJECTIVE This study sought to probe the mechanism of Kruppel-like factor 4 (KLF4) in pyroptosis of nasal mucosal epithelial cells (NEpCs) in AR mice and provide targets for AR treatment. METHODS AR mouse models were established using sensitization with ovalbumin, followed by injection with short hairpin RNA KLF4 (sh-KLF4). AR symptoms were assessed by the times of sneezing and nose rubbing, hematoxylin-eosin, and periodic acid-Schiff staining. Levels of KLF4, nucleotide-binding oligomerization domain-like receptor family pyrin domain containing 3 (NLRP3), cleaved caspase-1, and N-terminal domain (GSDMD-N) in nasal mucosal tissues were determined by Western blot assay, and levels of interleukin (IL)-1β and IL-18 in nasal lavage fluid were determined by enzyme-linked immunosorbent assay. The binding of KLF4 to the NLRP3 promoter was verified using chromatin immunoprecipitation and dual-luciferase assays. The functional rescue experiment was performed with oe-NLRP3 and sh-KLF4 in AR mice. RESULTS KLF4 was upregulated in nasal mucosal tissues of AR mice. KLF4 inhibition reduced the times of sneezing and nose rubbing, inflammatory cell infiltration, and goblet cell hyperplasia in nasal mucosal tissues, and levels of NLRP3, cleaved caspase-1, GSDMD-N, IL-1β, and IL-18. KLF4 was enriched on the NLRP3 promoter and improved NLRP3 expression. NLRP3 overexpression reversed the inhibition of sh-KLF4 on pyroptosis of NEpCs in AR mice. CONCLUSION KLF4 bound to the NLRP3 promoter and promoted pyroptosis of NEpCs in AR mice via activating NLRP3.
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Affiliation(s)
- Jiaoli Yao
- Department of Otolaryngology, Shanxi children's Hospital, Taiyuan, China
| | - Qingfeng Kong
- Department of Otolaryngology, Shanxi children's Hospital, Taiyuan, China
| | - Yin Wang
- Department of Otolaryngology, Shanxi children's Hospital, Taiyuan, China
| | - Yanting Zhang
- Department of Otolaryngology-Head and Neck Surgery, the Second Hospital, Shanxi Medical University, Taiyuan, China.,Key Research Laboratory of Airway Neuroimmunology, Shanxi Province, Taiyuan, China
| | - Qinxue Wang
- Department of Otolaryngology, Shanxi children's Hospital, Taiyuan, China
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Zhang Y, Yao C, Ju Z, Jiao D, Hu D, Qi L, Liu S, Wu X, Zhao C. Krüppel-like factors in tumors: Key regulators and therapeutic avenues. Front Oncol 2023; 13:1080720. [PMID: 36761967 PMCID: PMC9905823 DOI: 10.3389/fonc.2023.1080720] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 01/09/2023] [Indexed: 01/26/2023] Open
Abstract
Krüppel-like factors (KLFs) are a group of DNA-binding transcriptional regulators with multiple essential functions in various cellular processes, including proliferation, migration, inflammation, and angiogenesis. The aberrant expression of KLFs is often found in tumor tissues and is essential for tumor development. At the molecular level, KLFs regulate multiple signaling pathways and mediate crosstalk among them. Some KLFs may also be molecular switches for specific biological signals, driving their transition from tumor suppressors to promoters. At the histological level, the abnormal expression of KLFs is closely associated with tumor cell stemness, proliferation, apoptosis, and alterations in the tumor microenvironment. Notably, the role of each KLF in tumors varies according to tumor type and different stages of tumor development rather than being invariant. In this review, we focus on the advances in the molecular biology of KLFs, particularly the regulations of several classical signaling pathways by these factors, and the critical role of KLFs in tumor development. We also highlight their strong potential as molecular targets in tumor therapy and suggest potential directions for clinical translational research.
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Affiliation(s)
- Yuchen Zhang
- School of Acupuncture-moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Chongjie Yao
- School of Acupuncture-moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China,Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Ziyong Ju
- School of Acupuncture-moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Danli Jiao
- School of Acupuncture-moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Dan Hu
- School of Acupuncture-moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Li Qi
- School of Acupuncture-moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Shimin Liu
- School of Acupuncture-moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China,Shanghai Research Institute of Acupuncture and Meridian, Shanghai, China
| | - Xueqing Wu
- Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China,*Correspondence: Chen Zhao, ; Xueqing Wu,
| | - Chen Zhao
- School of Acupuncture-moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China,*Correspondence: Chen Zhao, ; Xueqing Wu,
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Lv H, Liu X, Zhou H. USP25 UPREGULATION BOOSTS GSDMD -MEDIATED PYROPTOSIS OF ACINAR CELLS IN ACUTE PANCREATITIS. Shock 2022; 58:408-416. [PMID: 36155610 DOI: 10.1097/shk.0000000000001992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
ABSTRACT Acute pancreatitis (AP) is an inflammation-associated disorder in the digestive system. Ubiquitin-specific peptidase 25 ( USP25 ) can modulate inflammation in diseases. This study expounded on the role of USP25 in pyroptosis of acinar cells in AP. Acinar cells were treated with lipopolysaccharide (LPS) and caerulein (CRE) to induce AP. Afterward, the expression patterns of USP25 , microRNA (miR)-10a-5p, and Krüppel-like factor 4 ( KLF4 ) in acinar cells were examined. Then, acinar cell viability and levels of NLR family pyrin-domain containing 3 (NLRP3), cleaved caspase-1, cleaved N -terminal gasdermin D ( GSDMD - N ), interleukin (IL)-1β, and IL-18 were determined. We observed that USP25 was highly expressed in AP models, and silencing USP25 increased cell viability and inhibited pyroptosis of AP acinar cells. The bindings of USP25 to KLF4 and miR-10a-5p to KLF4 and the GSDMD 3'UTR sequence were validated. We found that USP25 binding to KLF4 inhibited ubiquitination degradation of KLF4 , KLF4 transcriptionally decreased miR-10a-5p expression, and miR-10a-5p targeted GSDMD expression. Finally, rescue experiments proved that KLF4 overexpression or miR-10a-5p suppression enhanced pyroptosis of AP acinar cells. Overall, USP25 stabilized KLF4 expression through deubiquitination, limited miR-10a-5p expression, and increased GSDMD expression, finally promoting pyroptosis of acinar cells in AP.
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Affiliation(s)
- Hui Lv
- Department of Gastroenterology, The Central Hospital of Zhoukou, Zhoukou, China
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You Z, Yang Z, Cao S, Deng S, Chen Y. The novel KLF4/BIG1 regulates LPS-mediated neuro-inflammation and migration in BV2 cells via PI3K/Akt/NF-kB signaling pathway. Neuroscience 2022; 488:102-111. [DOI: 10.1016/j.neuroscience.2022.01.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 12/26/2021] [Accepted: 01/18/2022] [Indexed: 12/17/2022]
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Sun Z, Ji N, Zhao R, Liang J, Jiang J, Tian H. Extrachromosomal circular DNAs are common and functional in esophageal squamous cell carcinoma. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:1464. [PMID: 34734016 PMCID: PMC8506789 DOI: 10.21037/atm-21-4372] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 09/09/2021] [Indexed: 01/17/2023]
Abstract
Background Esophageal squamous cell carcinoma (ESCC) is the leading cause of cancer-related mortality. While recent studies have documented the presence of extrachromosomal circular DNAs (eccDNAs) in various tumors, to date, there have been no studies examining the distribution and function of eccDNAs in ESCC. Methods The eccDNAs from three surgically matched ESCC tissue samples were extracted and amplified by rolling circle amplification after removal of linear DNA and mitochondrial circular DNA. High-throughput eccDNA sequencing and bioinformatics analysis was performed to study the distribution pattern and the level of eccDNA expression. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses were performed on the genes associated with the differentially expressed eccDNAs. Five up-regulated and five down-regulated candidate eccDNAs were validated by routine polymerase chain reaction (PCR), TOPO-TA cloning and Sanger sequencing. The nucleotides flanking the eccDNA junctions were analyzed to explore the mechanisms of eccDNA formation. Results A total of 184,557 eccDNAs was identified. The overall length distribution ranged from 33 to 968,842 base pairs (bp), with the peak at approximately 360 bp. These eccDNAs mainly originated from 5'- and 3'-untranslated regions (UTRs), and rarely from exons, introns, LINE, or Alu repeat regions. The chromosome distribution, length distribution, and genomic annotation of the eccDNAs were comparable between ESCC samples and matched normal epithelium. Nevertheless, 16,031 eccDNAs were found to be differentially expressed between ESCC and matched normal epithelium, including 10,126 up-regulated eccDNAs and 5,905 down-regulated eccDNAs. GO analysis and KEGG pathway analysis showed enriched in cancer pathways, mitogen-activated protein kinase (MAPK) pathway, GTPase-related activity, and cytoskeleton function. PCR, TOPO-TA cloning, and Sanger sequencing validated the junctional sites of five up-regulated candidate eccDNAs and four other unexpected eccDNAs. A repeat nucleotide pattern between the position flanking the start site and that flanking the end site was detected. Conclusions This study demonstrated the genome-wide presence of eccDNAs, explored the differential expression of eccDNAs, and revealed the potential mechanisms of eccDNAs in ESCC. This work provides further insights into our understanding of genome plasticity, the role of eccDNAs in ESCC, and may contribute to the development of potential clinical therapies.
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Affiliation(s)
- Zhenguo Sun
- Department of Thoracic Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Na Ji
- Medical Division, Shandong Provincial Western Hospital, Shandong Provincial Ear Nose Throat Hospital, Jinan, China
| | - Renchang Zhao
- Department of Thoracic Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Jinghui Liang
- Department of Thoracic Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Jin Jiang
- Department of Thoracic Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Hui Tian
- Department of Thoracic Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
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Torii K, Okada Y, Morita A. Determining the immune environment of cutaneous T-cell lymphoma lesions through the assessment of lesional blood drops. Sci Rep 2021; 11:19629. [PMID: 34608214 PMCID: PMC8490448 DOI: 10.1038/s41598-021-98804-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Accepted: 09/14/2021] [Indexed: 12/28/2022] Open
Abstract
Detailed analysis of the cells that infiltrate lesional skin cannot be performed in skin biopsy specimens using immunohistochemistry or cell separation techniques because enzyme treatments applied during the isolation step can destroy small amounts of protein and minor cell populations in the biopsy specimen. Here, we describe a method for isolating T cells from drops of whole blood obtained from lesions during skin biopsy in patients with cutaneous T-cell lymphoma. Lesional blood is assumed to contain lesional resident cells, cells from capillary vessels, and blood overflowing from capillary vessels into the lesion area. The lesional blood showed substantial increases in distinct cell populations, chemokines, and the expression of various genes. The proportion of CD8+CD45RO+ T cells in the lesional blood negatively correlated with the modified severity-weighted assessment tool scores. CD4+CD45RO+ T cells in the lesional blood expressed genes associated with the development of cancer and progression of cutaneous T-cell lymphoma. In addition, CD8+CD45RO+ T cells in lesional blood had unique T-cell receptor repertoires in lesions of each stage. Assessment of lesional blood drops might provide new insight into the pathogenesis of mycosis fungoides and facilitate evaluation of the treatment efficacy for mycosis fungoides as well as other skin inflammatory diseases.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Biomarkers, Tumor/blood
- Disease Management
- Disease Susceptibility
- Female
- Humans
- Immunohistochemistry
- Immunophenotyping
- Lymphocyte Count
- Lymphocytes, Tumor-Infiltrating/immunology
- Lymphocytes, Tumor-Infiltrating/metabolism
- Lymphocytes, Tumor-Infiltrating/pathology
- Lymphoma, T-Cell, Cutaneous/blood
- Lymphoma, T-Cell, Cutaneous/diagnosis
- Lymphoma, T-Cell, Cutaneous/etiology
- Male
- Middle Aged
- Neoplasm Staging
- Receptors, Antigen, T-Cell/genetics
- Receptors, Antigen, T-Cell/metabolism
- T-Lymphocyte Subsets/immunology
- T-Lymphocyte Subsets/metabolism
- T-Lymphocyte Subsets/pathology
- Tumor Microenvironment/immunology
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Affiliation(s)
- Kan Torii
- Department of Geriatric and Environmental Dermatology, Nagoya City University Graduate School of Medical Sciences, Mizuho-Ku, Nagoya, 467-8601, Japan
| | - Yukinori Okada
- Department of Statistical Genetics, Osaka University Graduate School of Medicine, Osaka, Japan
- Laboratory of Statistical Immunology, Immunology Frontier Research Center (WPI-IFReC), Osaka University, Suita, Japan
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Osaka, Japan
| | - Akimichi Morita
- Department of Geriatric and Environmental Dermatology, Nagoya City University Graduate School of Medical Sciences, Mizuho-Ku, Nagoya, 467-8601, Japan.
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11
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Hou Y, Zi J, Ge Z. High Expression of RhoF Predicts Worse Overall Survival: A Potential Therapeutic Target for non-M3 Acute Myeloid Leukemia. J Cancer 2021; 12:5530-5542. [PMID: 34405015 PMCID: PMC8364661 DOI: 10.7150/jca.52648] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 07/15/2021] [Indexed: 01/11/2023] Open
Abstract
Rho GTPases are involved in multiple human malignancies and diverse biological functions. However, the patterns and prognostic significance of the expression of RhoD subfamily in acute myeloid leukemia (AML) remain unknown. Here, we detected the expressions of RhoD subfamily genes in AML on the basis of several published datasets and analyzed the survival of RhoD subfamily across the TCGA profiles and in a GEO series. We found that the expression of RhoF, but not RhoD, increased in AML patients in TCGA and GEO (all P<0.001); the survival analysis of two independent cohorts demonstrated that higher RhoF expression was significantly associated with poorer overall survival (OS) (P<0.001), whereas RhoD expression had no significant effect on OS in patients with AML (P>0.05); the subgroup analysis showed that high RhoF expression was correlated with poor 1-, 3-, and 5-year OS (P<0.05 for all); upregulated RhoF expression had a more significant prognostic value for OS in the younger patients (age<60), the intensive chemotherapy group, and wild-type groups (IDH1, NRAS, and TP53) (P<0.05 for all). Multivariate analysis indicated high RhoF expression as a strongly independent unfavorable prognostic factor for OS in patients without transplantation (P<0.05). Furthermore, a higher RhoF expression was closely associated with an older age, intermediate-/poor-risk cytogenetics and mutations in IDH1, NRAS, and TP53. RhoF expression was negatively correlated with BM blasts (P=0.020) and WBC (P=0.003). These findings suggest that high RhoF expression is associated with worsening OS in AML patients and is a potential therapeutic target for the treatment of AML.
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Affiliation(s)
- Yue Hou
- Department of Hematology, Zhongda Hospital, Medical School of Southeast University, Institute of Hematology Southeast University, Nanjing 210009, China
| | - Jie Zi
- Department of Hematology, Zhongda Hospital, Medical School of Southeast University, Institute of Hematology Southeast University, Nanjing 210009, China
| | - Zheng Ge
- Department of Hematology, Zhongda Hospital, Medical School of Southeast University, Institute of Hematology Southeast University, Nanjing 210009, China
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Hashim IF, Ahmad Mokhtar AM. Small Rho GTPases and their associated RhoGEFs mutations promote immunological defects in primary immunodeficiencies. Int J Biochem Cell Biol 2021; 137:106034. [PMID: 34216756 DOI: 10.1016/j.biocel.2021.106034] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 06/14/2021] [Accepted: 06/28/2021] [Indexed: 01/10/2023]
Abstract
Primary immunodeficiencies (PIDs) are associated with deleterious mutations of genes that encode proteins involved in actin cytoskeleton reorganisation. This deficiency affects haematopoietic cells. PID results in the defective function of immune cells, such as impaired chemokine-induced motility, receptor signalling, development and maturation. Some of the genes mutated in PIDs are related to small Ras homologous (Rho) guanosine triphosphatase (GTPase), one of the families of the Ras superfamily. Most of these genes act as molecular switches by cycling between active guanosine triphosphate-bound and inactive guanosine diphosphate-bound forms to control multiple cellular functions. They are best studied for their role in promoting cytoskeleton reorganisation, cell adhesion and motility. Currently, only three small Rho GTPases, namely, Rac2, Cdc42 and RhoH, have been identified in PIDs. However, several other Rho small G proteins might also contribute to the deregulation and phenotype observed in PIDs. Their contribution in PIDs may involve their main regulator, Rho guanine nucleotide exchange factors such as DOCK2 and DOCK8, wherein mutations may result in the impairment of small Rho GTPase activation. Thus, this review outlines the potential contribution of several small Rho GTPases to the promotion of PIDs.
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Affiliation(s)
- Ilie Fadzilah Hashim
- Primary Immunodeficiency Diseases Group, Regenerative Medicine Cluster, Advanced Medical and Dental Institute, Universiti Sains Malaysia, Kepala Batas, Penang, 13200, Malaysia.
| | - Ana Masara Ahmad Mokhtar
- Bioprocess Technology Division, School of Industrial Technology, Universiti Sains Malaysia, Gelugor, Penang, 11800, Malaysia.
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13
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Schleiss C, Carapito R, Fornecker LM, Muller L, Paul N, Tahar O, Pichot A, Tavian M, Nicolae A, Miguet L, Mauvieux L, Herbrecht R, Cianferani S, Freund JN, Carapito C, Maumy-Bertrand M, Bahram S, Bertrand F, Vallat L. Temporal multiomic modeling reveals a B-cell receptor proliferative program in chronic lymphocytic leukemia. Leukemia 2021; 35:1463-1474. [PMID: 33833385 PMCID: PMC8102193 DOI: 10.1038/s41375-021-01221-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 02/21/2021] [Accepted: 03/09/2021] [Indexed: 02/02/2023]
Abstract
B-cell receptor (BCR) signaling is crucial for the pathophysiology of most mature B-cell lymphomas/leukemias and has emerged as a therapeutic target whose effectiveness remains limited by the occurrence of mutations. Therefore, deciphering the cellular program activated downstream this pathway has become of paramount importance for the development of innovative therapies. Using an original ex vivo model of BCR-induced proliferation of chronic lymphocytic leukemia cells, we generated 108 temporal transcriptional and proteomic profiles from 1 h up to 4 days after BCR activation. This dataset revealed a structured temporal response composed of 13,065 transcripts and 4027 proteins, comprising a leukemic proliferative signature consisting of 430 genes and 374 proteins. Mathematical modeling of this complex cellular response further highlighted a transcriptional network driven by 14 early genes linked to proteins involved in cell proliferation. This group includes expected genes (EGR1/2, NF-kB) and genes involved in NF-kB signaling modulation (TANK, ROHF) and immune evasion (KMO, IL4I1) that have not yet been associated with leukemic cells proliferation. Our study unveils the BCR-activated proliferative genetic program in primary leukemic cells. This approach combining temporal measurements with modeling allows identifying new putative targets for innovative therapy of lymphoid malignancies and also cancers dependent on ligand-receptor interactions.
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Affiliation(s)
- Cedric Schleiss
- Laboratoire d'ImmunoRhumatologie Moléculaire, INSERM UMR-S1109, LabEx Transplantex, Plateforme Genomax, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
- Fédération Hospitalo-Universitaire (FHU) Omicare, Université de Strasbourg, Strasbourg, France
| | - Raphael Carapito
- Laboratoire d'ImmunoRhumatologie Moléculaire, INSERM UMR-S1109, LabEx Transplantex, Plateforme Genomax, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
- Fédération Hospitalo-Universitaire (FHU) Omicare, Université de Strasbourg, Strasbourg, France
- Laboratoire d'Immunologie, Plateau Technique de Biologie, Pôle de Biologie, Nouvel Hôpital Civil, Strasbourg, France
| | - Luc-Matthieu Fornecker
- Université de Strasbourg, INSERM, IRFAC UMR-S1113, Strasbourg, France
- Service d'Hématologie, Institut de Cancérologie Strasbourg Europe (ICANS), Strasbourg, France
| | - Leslie Muller
- Laboratoire de Spectrométrie de Masse BioOrganique, Université de Strasbourg, CNRS, IPHC, UMR 7178, Strasbourg, France
| | - Nicodème Paul
- Laboratoire d'ImmunoRhumatologie Moléculaire, INSERM UMR-S1109, LabEx Transplantex, Plateforme Genomax, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
- Fédération Hospitalo-Universitaire (FHU) Omicare, Université de Strasbourg, Strasbourg, France
| | - Ouria Tahar
- Laboratoire d'ImmunoRhumatologie Moléculaire, INSERM UMR-S1109, LabEx Transplantex, Plateforme Genomax, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
- Fédération Hospitalo-Universitaire (FHU) Omicare, Université de Strasbourg, Strasbourg, France
- Laboratoire d'Immunologie, Plateau Technique de Biologie, Pôle de Biologie, Nouvel Hôpital Civil, Strasbourg, France
| | - Angelique Pichot
- Laboratoire d'ImmunoRhumatologie Moléculaire, INSERM UMR-S1109, LabEx Transplantex, Plateforme Genomax, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
- Fédération Hospitalo-Universitaire (FHU) Omicare, Université de Strasbourg, Strasbourg, France
| | - Manuela Tavian
- Université de Strasbourg, INSERM, IRFAC UMR-S1113, Strasbourg, France
| | - Alina Nicolae
- Université de Strasbourg, INSERM, IRFAC UMR-S1113, Strasbourg, France
| | - Laurent Miguet
- Université de Strasbourg, INSERM, IRFAC UMR-S1113, Strasbourg, France
- Laboratoire d'Hématologie, Pôle de Biologie, Hôpital de Hautepierre, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Laurent Mauvieux
- Université de Strasbourg, INSERM, IRFAC UMR-S1113, Strasbourg, France
- Laboratoire d'Hématologie, Pôle de Biologie, Hôpital de Hautepierre, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Raoul Herbrecht
- Université de Strasbourg, INSERM, IRFAC UMR-S1113, Strasbourg, France
- Service d'Hématologie, Institut de Cancérologie Strasbourg Europe (ICANS), Strasbourg, France
| | - Sarah Cianferani
- Laboratoire de Spectrométrie de Masse BioOrganique, Université de Strasbourg, CNRS, IPHC, UMR 7178, Strasbourg, France
| | - Jean-Noel Freund
- Université de Strasbourg, INSERM, IRFAC UMR-S1113, Strasbourg, France
| | - Christine Carapito
- Laboratoire de Spectrométrie de Masse BioOrganique, Université de Strasbourg, CNRS, IPHC, UMR 7178, Strasbourg, France
| | - Myriam Maumy-Bertrand
- Fédération Hospitalo-Universitaire (FHU) Omicare, Université de Strasbourg, Strasbourg, France
- Institut de Recherche Mathématique Avancée, CNRS UMR 7501, LabEx IRMIA, Université de Strasbourg, Strasbourg, France
| | - Seiamak Bahram
- Laboratoire d'ImmunoRhumatologie Moléculaire, INSERM UMR-S1109, LabEx Transplantex, Plateforme Genomax, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
- Fédération Hospitalo-Universitaire (FHU) Omicare, Université de Strasbourg, Strasbourg, France
- Laboratoire d'Immunologie, Plateau Technique de Biologie, Pôle de Biologie, Nouvel Hôpital Civil, Strasbourg, France
| | - Frederic Bertrand
- Institut de Recherche Mathématique Avancée, CNRS UMR 7501, LabEx IRMIA, Université de Strasbourg, Strasbourg, France.
- Fédération Hospitalo-Universitaire (FHU) Omicare, Université de Strasbourg, Strasbourg, France.
- Institut Charles Delaunay, ROSAS, M2S, Université de Technologie de Troyes, Troyes, France.
| | - Laurent Vallat
- Laboratoire d'ImmunoRhumatologie Moléculaire, INSERM UMR-S1109, LabEx Transplantex, Plateforme Genomax, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France.
- Fédération Hospitalo-Universitaire (FHU) Omicare, Université de Strasbourg, Strasbourg, France.
- Laboratoire d'Immunologie, Plateau Technique de Biologie, Pôle de Biologie, Nouvel Hôpital Civil, Strasbourg, France.
- Université de Strasbourg, INSERM, IRFAC UMR-S1113, Strasbourg, France.
- Laboratoire d'Hématologie, Pôle de Biologie, Hôpital de Hautepierre, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.
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14
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Ahmad Mokhtar AM, Hashim IF, Mohd Zaini Makhtar M, Salikin NH, Amin-Nordin S. The Role of RhoH in TCR Signalling and Its Involvement in Diseases. Cells 2021; 10:950. [PMID: 33923951 PMCID: PMC8072805 DOI: 10.3390/cells10040950] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 04/14/2021] [Accepted: 04/16/2021] [Indexed: 12/19/2022] Open
Abstract
As an atypical member of the Rho family small GTPases, RhoH shares less than 50% sequence similarity with other members, and its expression is commonly observed in the haematopoietic lineage. To date, RhoH function was observed in regulating T cell receptor signalling, and less is known in other haematopoietic cells. Its activation may not rely on the standard GDP/GTP cycling of small G proteins and is thought to be constitutively active because critical amino acids involved in GTP hydrolysis are absent. Alternatively, its activation can be regulated by other types of regulation, including lysosomal degradation, somatic mutation and transcriptional repressor, which also results in an altered protein expression. Aberrant protein expression of RhoH has been implicated not only in B cell malignancies but also in immune-related diseases, such as primary immunodeficiencies, systemic lupus erythematosus and psoriasis, wherein its involvement may provide the link between immune-related diseases and cancer. RhoH association with these diseases involves several other players, including its interacting partner, ZAP-70; activation regulators, Vav1 and RhoGDI and other small GTPases, such as RhoA, Rac1 and Cdc42. As such, RhoH and its associated proteins are potential attack points, especially in the treatment of cancer and immune-related diseases.
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Affiliation(s)
- Ana Masara Ahmad Mokhtar
- Bioprocess Technology Division, School of Industrial Technology, Universiti Sains Malaysia, Gelugor 11800, Penang, Malaysia; (M.M.Z.M.); (N.H.S.)
| | - Ilie Fadzilah Hashim
- Primary Immunodeficiency Diseases Group, Regenerative Medicine Cluster, Advanced Medical and Dental Institute, Universiti Sains Malaysia, Kepala Batas 13200, Penang, Malaysia;
| | - Muaz Mohd Zaini Makhtar
- Bioprocess Technology Division, School of Industrial Technology, Universiti Sains Malaysia, Gelugor 11800, Penang, Malaysia; (M.M.Z.M.); (N.H.S.)
| | - Nor Hawani Salikin
- Bioprocess Technology Division, School of Industrial Technology, Universiti Sains Malaysia, Gelugor 11800, Penang, Malaysia; (M.M.Z.M.); (N.H.S.)
| | - Syafinaz Amin-Nordin
- Department of Medical Microbiology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia;
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15
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Dai DL, Li X, Wang L, Xie C, Jin Y, Zeng MS, Zuo Z, Xia TL. Identification of an N6-methyladenosine-mediated positive feedback loop that promotes Epstein-Barr virus infection. J Biol Chem 2021; 296:100547. [PMID: 33741341 PMCID: PMC8063736 DOI: 10.1016/j.jbc.2021.100547] [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: 12/17/2020] [Revised: 03/10/2021] [Accepted: 03/15/2021] [Indexed: 12/11/2022] Open
Abstract
N6-methyladenosine (m6A) is among the most abundant mRNA modifications, particularly in eukaryotes, and is found in mammals, plants, and even some viruses. Although essential for the regulation of many biological processes, the exact role of m6A modification in virus–host interaction remains largely unknown. Here, using m6A -immunoprecipitation and sequencing, we find that Epstein–Barr virus (EBV) infection decreases the m6A modification of transcriptional factor KLF4 mRNA and subsequently increases its protein level. Mechanistically, EBV immediate-early protein BZLF1 interacts with the promoter of m6A methyltransferase METTL3, inhibiting its expression. Subsequently, the decrease of METTL3 reduces the level of KLF4 mRNA m6A modification, preventing its decay by the m6A reader protein YTHDF2. As a result, KLF4 protein level is upregulated and, in turn, promotes EBV infection of nasopharyngeal epithelial cells. Thus, our results suggest the existence of a positive feedback loop formed between EBV and host molecules via cellular mRNA m6A levels, and this feedback loop acts to facilitate viral infection. This mechanism contains multiple potential targets for controlling viral infectious diseases.
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Affiliation(s)
- Dan-Ling Dai
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China
| | - Xingyang Li
- Department of Temporomandibular Joint Surgery, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, P. R. China
| | - Lin Wang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China; Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China
| | - Chu Xie
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China
| | - Yanan Jin
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China; Department of VIP Region, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China
| | - Mu-Sheng Zeng
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China
| | - Zhixiang Zuo
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China.
| | - Tian-Liang Xia
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China.
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