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Puli'uvea C, Immanuel T, Green TN, Tsai P, Shepherd PR, Kalev-Zylinska ML. Insights into the role of JAK2-I724T variant in myeloproliferative neoplasms from a unique cohort of New Zealand patients. Hematology 2024; 29:2297597. [PMID: 38197452 DOI: 10.1080/16078454.2023.2297597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Accepted: 12/12/2023] [Indexed: 01/11/2024] Open
Abstract
OBJECTIVES This study aimed to compile bioinformatic and experimental information for JAK2 missense variants previously reported in myeloproliferative neoplasms (MPN) and determine if germline JAK2-I724T, recently found to be common in New Zealand Polynesians, associates with MPN. METHODS For all JAK2 variants found in the literature, gnomAD_exome allele frequencies were extracted and REVEL scores were calculated using the dbNSFP database. We investigated the prevalence of JAK2-I724T in a cohort of 111 New Zealand MPN patients using a TaqMan assay, examined its allelic co-occurrence with JAK2-V617F using Oxford Nanopore sequencing, and modelled the impact of I724T on JAK2 using I-Mutant and ChimeraX software. RESULTS Several non-V617F JAK2 variants previously reported in MPN had REVEL scores greater than 0.5, suggesting pathogenicity. JAK2-I724T (REVEL score 0.753) was more common in New Zealand Polynesian MPN patients (n = 2/27; 7.4%) than in other New Zealand patients (n = 0/84; 0%) but less common than expected for healthy Polynesians (n = 56/377; 14.9%). Patients carrying I724T (n = 2), one with polycythaemia vera and one with essential thrombocythaemia, had high-risk MPN. Both patients with JAK2-I724T were also positive for JAK2-V617F, found on the same allele as I724T, as well as separately. In silico modelling did not identify noticeable structural changes that would give JAK2-I724T a gain-of-function. CONCLUSION Several non-canonical JAK2 variants with high REVEL scores have been reported in MPN, highlighting the need to further understand their relationship with disease. The JAK2-I724T variant does not drive MPN, but additional investigations are required to exclude any potential modulatory effect on the MPN phenotype.
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Affiliation(s)
- Christopher Puli'uvea
- Department of Molecular Medicine and Pathology, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery, Hosted by the University of Auckland, Auckland, New Zealand
| | - Tracey Immanuel
- Department of Molecular Medicine and Pathology, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
| | - Taryn N Green
- Department of Molecular Medicine and Pathology, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
| | - Peter Tsai
- Department of Molecular Medicine and Pathology, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery, Hosted by the University of Auckland, Auckland, New Zealand
| | - Peter R Shepherd
- Department of Molecular Medicine and Pathology, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery, Hosted by the University of Auckland, Auckland, New Zealand
| | - Maggie L Kalev-Zylinska
- Department of Molecular Medicine and Pathology, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
- Department of Pathology and Laboratory Medicine, Auckland City Hospital, Auckland, New Zealand
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Zhou L, Le MNU, Du Y, Chen X, Jin M, Xiang H, Xia LE, Zhou J, He J, Ning Y. A novel cancer-germline gene DAZL promotes progression and cisplatin resistance of non-small cell lung cancer by upregulating JAK2 and MCM8. Gene 2024; 916:148449. [PMID: 38588931 DOI: 10.1016/j.gene.2024.148449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2023] [Revised: 03/05/2024] [Accepted: 04/05/2024] [Indexed: 04/10/2024]
Abstract
Germline-specific genes are usually activated in cancer cells and drive cancer progression; such genes are called cancer-germline or cancer-testis genes. The RNA-binding protein DAZL is predominantly expressed in germ cells and plays a role in gametogenesis as a translational activator or repressor. However, its expression and role in non-small cell lung cancer (NSCLC) are unknown. Here, mining of RNA-sequencing data from public resources and immunohistochemical analysis of tissue microarrays showed that DAZL was expressed exclusively in testis among normal human tissues but ectopically expressed in NSCLC tissues. Testis and NSCLC cells expressed the shorter and longer transcript variants of the DAZL gene, respectively. Overexpression of the longer DAZL transcript promoted tumor growth in a mouse xenograft model. Silencing of DAZL suppressed cell proliferation, colony formation, migration, invasion, and cisplatin resistance in vitro and tumor growth in vivo. Quantitative proteomic analysis based on tandem mass tag and Western blot analysis showed that DAZL upregulated the expression of JAK2 and MCM8. RNA-binding protein immunoprecipitation assays showed that DAZL bound to the mRNA of JAK2 and MCM8. The JAK2 inhibitor fedratinib attenuated the oncogenic outcomes induced by DAZL overexpression, whereas silencing MCM8 counteracted the effects of DAZL overexpression on cisplatin-damaged DNA synthesis and half-maximal inhibitory concentration of cisplatin. In conclusion, DAZL was identified as a novel cancer-germline gene that enhances the translation of JAK2 and MCM8 to promote NSCLC progression and resistance to cisplatin, respectively. These findings suggest that DAZL is a potential therapeutic target in NSCLC.
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Affiliation(s)
- Lin Zhou
- Hunan Provincial Key Laboratory of Regional Hereditary Birth Defects Prevention and Control, Changsha Hospital for Maternal & Child Health Care Affiliated to Hunan Normal University, Hunan Normal University, Changsha 41007, Hunan, China; College of Clinical Laboratory, Changsha Medical University, Changsha, Hunan, China; State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha 410081, Hunan, China.
| | - Mai Nhu Uyen Le
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha 410081, Hunan, China.
| | - Yan Du
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha 410081, Hunan, China.
| | - Xi Chen
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha 410081, Hunan, China.
| | - Miao Jin
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha 410081, Hunan, China.
| | - Hu Xiang
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha 410081, Hunan, China.
| | - Liang E Xia
- Chongzuo Key Laboratory of Biomedical Clinical Transformation, The People's Hospital of Chongzuo, Youjiang Medical University for Nationalities, Chongzuo 532200, Guangxi, China.
| | - Jianlin Zhou
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha 410081, Hunan, China.
| | - Jun He
- Hunan Provincial Key Laboratory of Regional Hereditary Birth Defects Prevention and Control, Changsha Hospital for Maternal & Child Health Care Affiliated to Hunan Normal University, Hunan Normal University, Changsha 41007, Hunan, China.
| | - Yichong Ning
- Chongzuo Key Laboratory of Biomedical Clinical Transformation, The People's Hospital of Chongzuo, Youjiang Medical University for Nationalities, Chongzuo 532200, Guangxi, China.
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Li L, Zhou M, Wu YQ, Fan WN, Li D. Neuropsychiatric disturbance detecting polycythemia vera myelofibrosis: a case report and literature review. Front Neurol 2023; 14:1253468. [PMID: 37808487 PMCID: PMC10556491 DOI: 10.3389/fneur.2023.1253468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 09/05/2023] [Indexed: 10/10/2023] Open
Abstract
Background Neuropsychiatric disturbances and chorea are less recognized consequences of polycythemia vera (PV), and their role in post-PV myelofibrosis (MF) has not been reported. Clinical features that predict post-PV MF lack specificity. Case presentation We describe an elderly patient with PV who developed acute-onset reversible neuropsychiatric disturbances accompanied by generalized chorea and was finally diagnosed with post-PV MF after a bone marrow examination. We also reviewed four cases of late PV associated with neuropsychiatric symptoms since 1966 and analyzed their clinical characteristics and therapeutic effects. Conclusion Our case indicates that Janus kinase 2 (JAK2)-related PV is a treatable cause of late-onset chorea and that chorea may herald the deterioration of hematological parameters. Our case provides a clinically specific representation of post-PV MF. Patients with a long course of PV are recommended to undergo bone marrow re-examinations when they present with neuropsychiatric symptoms to achieve an early diagnosis of post-PV MF.
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Affiliation(s)
| | | | | | | | - Da Li
- Department of Neurology, Ningbo No 2 Hospital, Ningbo, Zhejiang, China
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Moteki H, Ogihara M, Kimura M. Cell proliferation effects of S-allyl-L-cysteine are associated with phosphorylation of janus kinase 2, insulin-like growth factor type-I receptor tyrosine kinase, and extracellular signal-regulated kinase 2 in primary cultures of adult rat hepatocytes. Eur J Pharmacol 2022; 927:175067. [PMID: 35654135 DOI: 10.1016/j.ejphar.2022.175067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 04/26/2022] [Accepted: 05/24/2022] [Indexed: 12/22/2022]
Abstract
The cell proliferation effect of S-allyl-L-cysteine (SAC) and its mechanisms were examined in primary cultures of adult rat hepatocytes. In serum-free cultivation, SAC (10-6 M)-stimulated hepatocytes showed significant proliferation compared to control at 5-h culture; the effect was dependent on the culture time and the dose of SAC (EC50 value 8.58 × 10-8 M). In addition, SAC-stimulated hepatocytes significantly increased mRNA expression levels of c-Myc and c-Fos at 1 h and cyclin B1 at 3.5 and 4 h, respectively. In contrast, alliin and allicin, structural analogs of SAC, did not show these effects observed with SAC. The SAC-induced hepatocyte proliferation effects were completely suppressed by monoclonal antibodies against growth hormone receptor and insulin-like growth factor type-I (IGF-I) receptor, respectively. Furthermore, the Janus kinase 2 (JAK2) inhibitor TG101209, phospholipase C (PLC) inhibitor U-73122, IGF-I receptor tyrosine kinase (RTK) inhibitor AG538, PI3 kinase inhibitor LY294002, MEK inhibitor PD98059, and mTOR inhibitor rapamycin completely suppressed the SAC-induced hepatocyte proliferation. JAK2 (p125 kDa) phosphorylation in cultured hepatocytes peaked 5 min after SAC stimulation. SAC-induced IGF-I RTK (p95 kDa) and ERK2 (p42 kDa) phosphorylation had slower rises than JAK2, peaking at 20 and 30 min, respectively. These results indicate that SAC promoted cell proliferation by growth hormone receptor/JAK2/PLC pathway activation followed by activation of the IGF-I RTK/PI3K/ERK2/mTOR pathway in primary cultures of adult rat hepatocytes.
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Affiliation(s)
- Hajime Moteki
- Department of Clinical Pharmacology, Faculty of Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado City, Saitama, 350-0295, Japan.
| | - Masahiko Ogihara
- Department of Clinical Pharmacology, Faculty of Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado City, Saitama, 350-0295, Japan
| | - Mitsutoshi Kimura
- Department of Clinical Pharmacology, Faculty of Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado City, Saitama, 350-0295, Japan
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Zhang Y, Lin C, Chen R, Luo L, Huang J, Liu H, Chen W, Xu J, Yu H, Ding Y. Association analysis of SOCS3, JAK2 and STAT3 gene polymorphisms and genetic susceptibility to type 2 diabetes mellitus in Chinese population. Diabetol Metab Syndr 2022; 14:4. [PMID: 34991691 PMCID: PMC8734348 DOI: 10.1186/s13098-021-00774-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Accepted: 12/21/2021] [Indexed: 12/18/2022] Open
Abstract
AIM The association of polymorphisms in the three genes of SOCS3, JAK2 and STAT3 with genetic susceptibility to type 2 diabetes mellitus (T2DM) was explored, and its interaction with environmental factors such as hypertension and triglycerides was analyzed. METHODS The Hardy-Weinberg balance test was used to analyze the random balance of genes in the population. The analysis of the association of SNPs with T2DM was performed using Pearson's chi-square test. Haplotype frequency distribution, SNPs-SNPs interaction and environmental factors were analyzed by chi-square test and logistic regression. RESULTS The genotype distribution of SNPs rs2280148 of the SOCS3 gene was statistically significant. The allele frequency distribution of SNPs (rs4969168/rs2280148) was statistically different. After covariate correction, the SOCS3 gene locus (rs4969168) showed an association with T2DM in additive model, while the rs2280148 locus showed an association with T2DM in all three models. The locus (rs10974914/rs10815157) allele and genotype frequency distribution of JAK2 were statistically significant. After covariate correction, two SNPs in the gene showed association with T2DM in both additive and recessive models. The distribution of genotype frequencies of SNPs rs1053005 locus in gene STAT3 was statistically significant between the two groups. In recessive genetic models, rs1053005 locus polymorphisms was associated with T2DM. Haplotype S3 (G G)/S 4 (G T) of the SOCS3 gene as well as haplotype J2 (A G)/J 3 (G C) of the JAK2 gene were closely associated with T2DM. There was an interaction between SNPs rs4969168 and SNPs rs2280148 in the SOCS3 gene. There was an interaction between the SOCS3, JAK2 and STAT3 genes and hypertension/triglycerides. CONCLUSION The SOCS3 and JAK2 genes may be associated with T2DM in the Chinese population, in which SNPs carrying the A allele (rs4969168)/G allele (rs2280148)/C allele (rs10815157) have a reduced risk of T2DM. Haplotype S3 (G G)/S 4 (G T) of the SOCS3 gene and haplotype J2 (A G)/J 3 (G C) of the JAK2 gene may be influencing factor for T2DM. The interaction between SNPs rs4969168 and SNPs rs2280148 increases the risk of T2DM. Hypertension and triglycerides may interact with SNPs of T2DM susceptibility genes.
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Affiliation(s)
- Yang Zhang
- Department of Epidemiology and Medical Statistics, School of Public Health, Guangdong Medical University, Dongguan, China
- Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Chunwen Lin
- Department of Epidemiology and Medical Statistics, School of Public Health, Guangdong Medical University, Dongguan, China
| | - Rong Chen
- Department of Epidemiology and Medical Statistics, School of Public Health, Guangdong Medical University, Dongguan, China
| | - Ling Luo
- Department of Epidemiology and Medical Statistics, School of Public Health, Guangdong Medical University, Dongguan, China
| | - Jialu Huang
- Department of Epidemiology and Medical Statistics, School of Public Health, Guangdong Medical University, Dongguan, China
| | - Hao Liu
- Department of Epidemiology and Medical Statistics, School of Public Health, Guangdong Medical University, Dongguan, China
| | - Weiying Chen
- Department of Epidemiology and Medical Statistics, School of Public Health, Guangdong Medical University, Dongguan, China
| | - Jian Xu
- Department of Epidemiology and Medical Statistics, School of Public Health, Guangdong Medical University, Dongguan, China
| | - Haibing Yu
- Department of Epidemiology and Medical Statistics, School of Public Health, Guangdong Medical University, Dongguan, China
| | - Yuanlin Ding
- Department of Epidemiology and Medical Statistics, School of Public Health, Guangdong Medical University, Dongguan, China
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Guo H, Zheng L, Guo Y, Han L, Yu J, Lai F. Curculigoside Represses the Proliferation and Metastasis of Osteosarcoma via the JAK/STAT and NF-κB Signaling Pathways. Biol Pharm Bull 2022; 45:1466-1475. [PMID: 36184504 DOI: 10.1248/bpb.b22-00311] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Curculigoside (Cur) is a natural component from Curculigo orchioides Gaertn, with various bioactivities. The function of Cur in the nervous system and osteoarthritis has been reported. However, its role in osteosarcoma (OS) needs to be investigated. Hence, we focus on probing the impact of Cur on OS. In vitro, cell counting kit 8 (CCK-8), flow cytometry and Transwell assay were used to investigate the effects of Cur on OS cell proliferation, apoptosis, migration and invasion. In vivo, we developed a xenograft model to figure out the effect of Cur on tumor growth in nude mice. Western blotting (WB) was conducted to compare the levels of Cur on apoptosis-related proteins (C-caspase-3, Bax, and Bcl-2), epithelial-mesenchymal transition (EMT)-related proteins (N-cadherin, Snail, and E-cadherin) and the Janus kinase (JAK)/signal transducer and activator of transcription (STAT) and nuclear factor-κB (NF-κB) pathways in vitro and in vivo. In-vitro data testified that Cur treatment markedly hampered OS cells' growth, migration and invasion and intensified their apoptosis compared to that of the control group. In vivo, Cur treatment notably hampered the growth of OS tumors in mice. In addition, both in vitro and in vivo experiments demonstrated that the phosphorylation of JAK2, STAT3, and NF-κB were inhibited through Cur treatment. Furthermore, the inhibition of Cur in OS cells was demonstrated by up-regulating the expression of JAK/STAT and NF-κB pathways protein levels. In summary, the data suggest that Cur curbs OS growth by down-regulating the JAK/STAT and NF-κB pathways, which is an underlying therapeutic option for OS treatment.
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Affiliation(s)
- Huiwen Guo
- College of Traditional Chinese Medicine, Jiangxi University of Chinese Medicine
| | - Lixiang Zheng
- College of Traditional Chinese Medicine, Jiangxi University of Chinese Medicine
| | - Yepin Guo
- College of Humanities, Jiangxi University of Chinese Medicine
| | - Lu Han
- College of Humanities, Jiangxi University of Chinese Medicine
| | - Jing Yu
- College of Humanities, Jiangxi University of Chinese Medicine
| | - Fuchong Lai
- Department of Orthopedics, The First Affiliated Hospital of Nanchang University, Artificial Joints Engineering and Technology Research Center of Jiangxi Province
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Wang R, Yang X, Chang M, Xue Z, Wang W, Bai L, Zhao S, Liu E. ORF3a Protein of Severe Acute Respiratory Syndrome Coronavirus 2 Inhibits Interferon-Activated Janus Kinase/Signal Transducer and Activator of Transcription Signaling via Elevating Suppressor of Cytokine Signaling 1. Front Microbiol 2021; 12:752597. [PMID: 34650546 PMCID: PMC8506155 DOI: 10.3389/fmicb.2021.752597] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 09/07/2021] [Indexed: 12/26/2022] Open
Abstract
Coronavirus disease 2019 (COVID-19) has caused a crisis to global public health since its outbreak at the end of 2019. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the pathogen of COVID-19, appears to efficiently evade the host immune responses, including interferon (IFN) signaling. Several SARS-CoV-2 viral proteins are believed to involve in the inhibition of IFN signaling. In this study, we discovered that ORF3a, an accessory protein of SARS-CoV-2, inhibited IFN-activated Janus kinase (JAK)/signal transducer and activator of transcription (STAT) signaling via upregulating suppressor of cytokine signaling 1 (SOCS1), a negative regulator of cytokine signaling. ORF3a induced SOCS1 elevation in a dose- and time-dependent manner. RNAi-mediated silencing of SOCS1 efficiently abolished ORF3a-induced blockage of JAK/STAT signaling. Interestingly, we found that ORF3a also promoted the ubiquitin-proteasomal degradation of Janus kinase 2 (JAK2), an important kinase in IFN signaling. Silencing of SOCS1 by siRNA distinctly blocked ORF3a-induced JAK2 ubiquitination and degradation. These results demonstrate that ORF3a dampens IFN signaling via upregulating SOCS1, which suppressed STAT1 phosphorylation and accelerated JAK2 ubiquitin-proteasomal degradation. Furthermore, analysis of ORF3a deletion constructs showed that the middle domain of ORF3a (amino acids 70-130) was responsible for SOCS1 upregulation. These findings contribute to our understanding of the mechanism of SARS-CoV-2 antagonizing host antiviral response.
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Affiliation(s)
- Rong Wang
- Laboratory Animal Center, Xi’an Jiaotong University Health Science Center, Xi’an, China
| | | | | | | | | | | | | | - Enqi Liu
- Laboratory Animal Center, Xi’an Jiaotong University Health Science Center, Xi’an, China
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Zhang S, Liu S, Liu X, Liu J, Wu W. Identification of JAK2 and FOXM1 expression as novel candidate biomarkers for predicting the benefit of immunotherapy in lung squamous cell carcinoma. Ann Transl Med 2021; 9:1081. [PMID: 34422993 PMCID: PMC8339858 DOI: 10.21037/atm-21-2186] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 06/21/2021] [Indexed: 12/13/2022]
Abstract
Background Lung squamous cell carcinoma (LUSC) accounts for about 30% of all non-small cell lung cancers (NSCLC). However, only a small percentage of LUSC patients gain benefit from immune checkpoint inhibitors (ICIs). Methods This study analyzed LUSC patients from The Cancer Genome Atlas (TCGA), which were divided into 2 groups: PD-L1 high-expression/TMB-high (TPH) and PD-L1 low-expression/TMB-low (TPL) group based on programmed death-ligand 1 (PD-L1) expression and tumor mutational burden (TMB) status. The differences in tumor-infiltrating immune cells were estimated between the 2 groups. The overlap of differentially expressed genes and proteins (DEGs and DEPs) between 2 groups were used as candidate biomarkers. Kaplan-Meier curves were used to evaluate the association between risk score and overall survival (OS). Results More abundant immune infiltration fractions were found in TPH group. Janus kinase 2 (JAK2) and forkhead box protein M1 (FOXM1) were identified as DEGs between the TPH and TPL groups. Subsequently, we developed a risk score that combined the expression of JAK2 and FOXM1 in an effort to accurately determine the survival risk of LUSC patients. Patients with high-risk [hazard ratio (HR), median OS, 43.1 months 1.924; 95% confidence interval (CI): 1.256 to 2.945; P=0.002) had shorter survival than those with low-risk (median OS, 70.0 months). External data verification found that JAK2 and FOXM1 were significantly expressed at a higher level in the responders receiving immunotherapy (P=0.038 and P=0.009, respectively). Conclusions The expressions of JAK2 and FOXM1 can be used as novel candidate biomarkers for predicting the benefit of immunotherapy in LUSC.
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Affiliation(s)
- Shixin Zhang
- Department of Thoracic Surgery, Southwest Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Shuai Liu
- Department of Thoracic Surgery, Southwest Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Xi Liu
- Department of Thoracic Surgery, Southwest Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Jie Liu
- Department of Thoracic Surgery, Southwest Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Wei Wu
- Department of Thoracic Surgery, Southwest Hospital, Army Medical University (Third Military Medical University), Chongqing, China
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9
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Roger I, Milara J, Montero P, Cortijo J. The Role of JAK/STAT Molecular Pathway in Vascular Remodeling Associated with Pulmonary Hypertension. Int J Mol Sci 2021; 22:4980. [PMID: 34067108 DOI: 10.3390/ijms22094980] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/29/2021] [Accepted: 05/04/2021] [Indexed: 12/11/2022] Open
Abstract
Pulmonary hypertension is defined as a group of diseases characterized by a progressive increase in pulmonary vascular resistance (PVR), which leads to right ventricular failure and premature death. There are multiple clinical manifestations that can be grouped into five different types. Pulmonary artery remodeling is a common feature in pulmonary hypertension (PH) characterized by endothelial dysfunction and smooth muscle pulmonary artery cell proliferation. The current treatments for PH are limited to vasodilatory agents that do not stop the progression of the disease. Therefore, there is a need for new agents that inhibit pulmonary artery remodeling targeting the main genetic, molecular, and cellular processes involved in PH. Chronic inflammation contributes to pulmonary artery remodeling and PH, among other vascular disorders, and many inflammatory mediators signal through the JAK/STAT pathway. Recent evidence indicates that the JAK/STAT pathway is overactivated in the pulmonary arteries of patients with PH of different types. In addition, different profibrotic cytokines such as IL-6, IL-13, and IL-11 and growth factors such as PDGF, VEGF, and TGFβ1 are activators of the JAK/STAT pathway and inducers of pulmonary remodeling, thus participating in the development of PH. The understanding of the participation and modulation of the JAK/STAT pathway in PH could be an attractive strategy for developing future treatments. There have been no studies to date focused on the JAK/STAT pathway and PH. In this review, we focus on the analysis of the expression and distribution of different JAK/STAT isoforms in the pulmonary arteries of patients with different types of PH. Furthermore, molecular canonical and noncanonical JAK/STAT pathway transactivation will be discussed in the context of vascular remodeling and PH. The consequences of JAK/STAT activation for endothelial cells and pulmonary artery smooth muscle cells’ proliferation, migration, senescence, and transformation into mesenchymal/myofibroblast cells will be described and discussed, together with different promising drugs targeting the JAK/STAT pathway in vitro and in vivo.
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Xu P, Shen P, Wang H, Qin L, Ren J, Sun Q, Ge R, Bian J, Zhong Y, Li Z, Wang J, Qiu Z. Discovery of imidazopyrrolopyridines derivatives as novel and selective inhibitors of JAK2. Eur J Med Chem 2021; 218:113394. [PMID: 33813153 DOI: 10.1016/j.ejmech.2021.113394] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 03/15/2021] [Accepted: 03/15/2021] [Indexed: 01/05/2023]
Abstract
Herein, we describe the design, synthesis, and structure-activity relationships of a series of imidazopyrrolopyridines derivatives that selectively inhibit Janus kinase 2 (JAK2). These screening cascades revealed that 6k was a preferred compound, with IC50 values of 10 nM for JAK2. Moreover, 6k was a selective JAK2 inhibitor with 19-fold, >30-fold and >30-fold selectivity over JAK1, JAK3 and TYK2 respectively. In cytokine-stimulated cell-based assays, 6k exhibited a higher JAK2 selectivity over JAK1 isoforms. Indeed, at a dose of 20 mg/kg compound 6k, pSTAT3 and pSTAT5 expression was reduced to levels comparable to those of control animals untreated with GM-CSF. Additionally, 6k showed a relatively good bioavailability (F = 38%), a suitable half-life time (T1/2 = 1.9 h), a satisfactory metabolic stability, suggesting that 6k might be a promising inhibitor of JAK2 for further development research for the treatment of MPNs.
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Affiliation(s)
- Pengfei Xu
- Department of Medicinal Chemistry, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, PR China
| | - Pei Shen
- Department of Medicinal Chemistry, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, PR China
| | - Hai Wang
- Changzhou Siyao Pharmaceutical Co. Ltd. No.567, Zhongwu Avenue, Changzhou, Jiangsu, 213018, China
| | - Lian Qin
- Department of Medicinal Chemistry, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, PR China
| | - Jie Ren
- Department of Medicinal Chemistry, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, PR China
| | - Qiushuang Sun
- Department of Medicinal Chemistry, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, PR China
| | - Raoling Ge
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Kunming, 650000, China
| | - Jinlei Bian
- Department of Medicinal Chemistry, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, PR China; Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 21009, China
| | - Yi Zhong
- Department of Medicinal Chemistry, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, PR China; Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 21009, China
| | - Zhiyu Li
- Department of Medicinal Chemistry, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, PR China; Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 21009, China.
| | - JuBo Wang
- Department of Medicinal Chemistry, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, PR China; Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 21009, China
| | - Zhixia Qiu
- Department of Medicinal Chemistry, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, PR China; Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 21009, China
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11
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Zia SR. Role of water in the determination of protonation states of titratable residues. J Mol Model 2021; 27:61. [PMID: 33517493 DOI: 10.1007/s00894-021-04677-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 01/14/2021] [Indexed: 10/22/2022]
Abstract
Water is the fundamental unit for living being, and its contribution in variety of crucial cellular functions is widely accepted. The presence of water molecules in protein's environment also accounts for structural optimization, in which highly conserved water molecules ensure structural stability of the biomolecule by providing protein-water (solute-solvent) hydrogen-bond interaction networks. Similarly, protonation states and pKa values of individual amino acid residues are also influenced by neighboring water molecules present in the protein's vicinity. In the present study, we have highlighted the role of water molecules in hydrogen-bond optimization, in determining pKa values and protonation states of titratable residues in JH2 domain of JAK2 apo protein. We found that inclusion or exclusion of water molecules while calculating pKa and assigning protonation states to amino acid residues during the molecular system build-up step resulted in slight differences in pKa values of few titratable residues and alternative protonation states of a certain residue. Accordingly, different protonation states of ionizable residues offer differing interaction patterns. Thus, we inferred that the presence of water optimizes the hydrogen-bond interactions by forming direct protein-water interactions and by linking via protein-protein bridging interactions. However, in the absence of water, the interaction pattern is somewhat disrupted. We assume that water molecules could modulate the plausibility of a particular protonation state of titratable residues on the basis of its fit with the local environment, by utilizing some particular hydrogen-bond contacts that would remain unexploited in the absence of water.
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12
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Kitakaze T, Jiang H, Nomura T, Hironao KY, Yamashita Y, Ashida H. Kaempferol Promotes Glucose Uptake in Myotubes through a JAK2-Dependent Pathway. J Agric Food Chem 2020; 68:13720-13729. [PMID: 33197173 DOI: 10.1021/acs.jafc.0c05236] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Kaempferol possesses various health-promoting functions including antihyperglycemic activity, but its underlying molecular mechanism is poorly understood. Glucose transporter 4 (GLUT4) plays an important role in the uptake of blood glucose into muscle cells after its translocation to the plasma membrane. In this study, we demonstrated that kaempferol at 1.0 nM or more significantly increased the uptake of 2-[3H]- deoxy-d-glucose by 1.3-1.4-fold in L6 myotubes. Kaempferol at 10 pM or more also significantly increased GLUT4 translocation by 1.3-1.6-fold. Kaempferol at 1.0 nM significantly increased the phosphorylation of adenosine monophosphate-activated protein kinase (AMPK) by 2.9-fold, liver kinase B1 and Janus kinase 2 (JAK2) by 1.9-fold, and signal transducer and activator of transcription 3 by 3.7-fold. In addition, kaempferol increased phosphorylation of phosphoinositide 3-kinase (PI3K) by 1.8-fold but not the insulin receptor. Small interfering RNA (siRNA) for AMPK, JAK2, or PI3K canceled kaempferol-induced glucose uptake and GLUT4 translocation. Furthermore, siRNA for JAK2 canceled kaempferol-induced phosphorylation of AMPK and PI3K. These results indicate that a JAK2-depdendent pathway regulates kaempferol-induced glucose uptake and GLUT4 translocation in L6 myotubes and that kaempferol may be an effective compound for the prevention of hyperglycemia.
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Affiliation(s)
- Tomoya Kitakaze
- Department of Agrobioscience, Graduate School of Agricultural Science, Kobe University, Kobe 657-8501, Japan
| | - Hao Jiang
- Department of Agrobioscience, Graduate School of Agricultural Science, Kobe University, Kobe 657-8501, Japan
| | - Takuya Nomura
- Department of Agrobioscience, Graduate School of Agricultural Science, Kobe University, Kobe 657-8501, Japan
| | - Ken-Yu Hironao
- Department of Agrobioscience, Graduate School of Agricultural Science, Kobe University, Kobe 657-8501, Japan
| | - Yoko Yamashita
- Department of Agrobioscience, Graduate School of Agricultural Science, Kobe University, Kobe 657-8501, Japan
| | - Hitoshi Ashida
- Department of Agrobioscience, Graduate School of Agricultural Science, Kobe University, Kobe 657-8501, Japan
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13
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Eichstaedt CA, Verweyen J, Halank M, Benjamin N, Fischer C, Mayer E, Guth S, Wiedenroth CB, Egenlauf B, Harutyunova S, Xanthouli P, Marra AM, Wilkens H, Ewert R, Hinderhofer K, Grünig E. Myeloproliferative Diseases as Possible Risk Factor for Development of Chronic Thromboembolic Pulmonary Hypertension-A Genetic Study. Int J Mol Sci 2020; 21:ijms21093339. [PMID: 32397294 PMCID: PMC7246715 DOI: 10.3390/ijms21093339] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 04/30/2020] [Accepted: 05/06/2020] [Indexed: 11/16/2022] Open
Abstract
Chronic thromboembolic pulmonary hypertension (CTEPH) is a rare disease which is often caused by recurrent emboli. These are also frequently found in patients with myeloproliferative diseases. While myeloproliferative diseases can be caused by gene defects, the genetic predisposition to CTEPH is largely unexplored. Therefore, the objective of this study was to analyse these genes and further genes involved in pulmonary hypertension in CTEPH patients. A systematic screening was conducted for pathogenic variants using a gene panel based on next generation sequencing. CTEPH was diagnosed according to current guidelines. In this study, out of 40 CTEPH patients 4 (10%) carried pathogenic variants. One patient had a nonsense variant (c.2071A>T p.Lys691*) in the BMPR2 gene and three further patients carried the same pathogenic variant (missense variant, c.1849G>T p.Val617Phe) in the Janus kinase 2 (JAK2) gene. The latter led to a myeloproliferative disease in each patient. The prevalence of this JAK2 variant was significantly higher than expected (p < 0.0001). CTEPH patients may have a genetic predisposition more often than previously thought. The predisposition for myeloproliferative diseases could be an additional risk factor for CTEPH development. Thus, clinical screening for myeloproliferative diseases and genetic testing may be considered also for CTEPH patients.
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Affiliation(s)
- Christina A. Eichstaedt
- Centre for Pulmonary Hypertension, Thoraxklinik Heidelberg gGmbH, Heidelberg University Hospital, Röntgenstr. 1, 69126 Heidelberg, Germany; (J.V.); (N.B.); (B.E.); (S.H.); (P.X.); (A.M.M.); (E.G.)
- Translational Lung Research Centre (TLRC), German Centre for Lung Research (DZL), Im Neuenheimer Feld 156, 69120 Heidelberg, Germany
- Laboratory of Molecular Genetic Diagnostics, Institute of Human Genetics, Heidelberg University, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany; (C.F.); (K.H.)
- Correspondence: ; Tel.: +49-6221-396-1221; Fax: +49-6221-396-1222
| | - Jeremias Verweyen
- Centre for Pulmonary Hypertension, Thoraxklinik Heidelberg gGmbH, Heidelberg University Hospital, Röntgenstr. 1, 69126 Heidelberg, Germany; (J.V.); (N.B.); (B.E.); (S.H.); (P.X.); (A.M.M.); (E.G.)
- Translational Lung Research Centre (TLRC), German Centre for Lung Research (DZL), Im Neuenheimer Feld 156, 69120 Heidelberg, Germany
| | - Michael Halank
- Department of Internal Medicine I, Carl Gustav Carus University Hospital, Technical University of Dresden, Fetscherstraße 74, 01307 Dresden, Germany;
| | - Nicola Benjamin
- Centre for Pulmonary Hypertension, Thoraxklinik Heidelberg gGmbH, Heidelberg University Hospital, Röntgenstr. 1, 69126 Heidelberg, Germany; (J.V.); (N.B.); (B.E.); (S.H.); (P.X.); (A.M.M.); (E.G.)
- Translational Lung Research Centre (TLRC), German Centre for Lung Research (DZL), Im Neuenheimer Feld 156, 69120 Heidelberg, Germany
| | - Christine Fischer
- Laboratory of Molecular Genetic Diagnostics, Institute of Human Genetics, Heidelberg University, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany; (C.F.); (K.H.)
| | - Eckhard Mayer
- Kerckhoff Heart and Thorax Center, Department of Thoracic Surgery, Benekestr. 2–8, 61231 Bad Nauheim, Germany; (S.G.); (C.B.W.); (E.M.)
| | - Stefan Guth
- Kerckhoff Heart and Thorax Center, Department of Thoracic Surgery, Benekestr. 2–8, 61231 Bad Nauheim, Germany; (S.G.); (C.B.W.); (E.M.)
| | - Christoph B. Wiedenroth
- Kerckhoff Heart and Thorax Center, Department of Thoracic Surgery, Benekestr. 2–8, 61231 Bad Nauheim, Germany; (S.G.); (C.B.W.); (E.M.)
| | - Benjamin Egenlauf
- Centre for Pulmonary Hypertension, Thoraxklinik Heidelberg gGmbH, Heidelberg University Hospital, Röntgenstr. 1, 69126 Heidelberg, Germany; (J.V.); (N.B.); (B.E.); (S.H.); (P.X.); (A.M.M.); (E.G.)
- Translational Lung Research Centre (TLRC), German Centre for Lung Research (DZL), Im Neuenheimer Feld 156, 69120 Heidelberg, Germany
| | - Satenik Harutyunova
- Centre for Pulmonary Hypertension, Thoraxklinik Heidelberg gGmbH, Heidelberg University Hospital, Röntgenstr. 1, 69126 Heidelberg, Germany; (J.V.); (N.B.); (B.E.); (S.H.); (P.X.); (A.M.M.); (E.G.)
- Translational Lung Research Centre (TLRC), German Centre for Lung Research (DZL), Im Neuenheimer Feld 156, 69120 Heidelberg, Germany
| | - Panagiota Xanthouli
- Centre for Pulmonary Hypertension, Thoraxklinik Heidelberg gGmbH, Heidelberg University Hospital, Röntgenstr. 1, 69126 Heidelberg, Germany; (J.V.); (N.B.); (B.E.); (S.H.); (P.X.); (A.M.M.); (E.G.)
- Translational Lung Research Centre (TLRC), German Centre for Lung Research (DZL), Im Neuenheimer Feld 156, 69120 Heidelberg, Germany
| | - Alberto M. Marra
- Centre for Pulmonary Hypertension, Thoraxklinik Heidelberg gGmbH, Heidelberg University Hospital, Röntgenstr. 1, 69126 Heidelberg, Germany; (J.V.); (N.B.); (B.E.); (S.H.); (P.X.); (A.M.M.); (E.G.)
- Translational Lung Research Centre (TLRC), German Centre for Lung Research (DZL), Im Neuenheimer Feld 156, 69120 Heidelberg, Germany
- IRCCS SDN Research Institute, Via F. Crispi 8, 80121 Naples, Italy
| | - Heinrike Wilkens
- Department of Internal Medicine V—Pneumology, Allergology and Critical Care Medicine, University Hospital of Saarland, Kirrberger Str., 66424 Homburg, Saar, Germany;
| | - Ralf Ewert
- Department of Internal Medicine B—Cardiology, Intensive Care, Pulmonary Medicine and Infectious Diseases, University of Greifswald, Ferdinand-Sauerbruch-Str., 17475 Greifswald, Germany;
| | - Katrin Hinderhofer
- Laboratory of Molecular Genetic Diagnostics, Institute of Human Genetics, Heidelberg University, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany; (C.F.); (K.H.)
| | - Ekkehard Grünig
- Centre for Pulmonary Hypertension, Thoraxklinik Heidelberg gGmbH, Heidelberg University Hospital, Röntgenstr. 1, 69126 Heidelberg, Germany; (J.V.); (N.B.); (B.E.); (S.H.); (P.X.); (A.M.M.); (E.G.)
- Translational Lung Research Centre (TLRC), German Centre for Lung Research (DZL), Im Neuenheimer Feld 156, 69120 Heidelberg, Germany
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14
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Kondo H, Watanabe R, Okazaki S, Kuriyama K, Ochi T, Yamada G, Sugiura A, Chiba H, Tsukada A, Taniuchi S, Igarashi T, Kudo M, Harigae H, Fujii H. JAK2 mutation-positive polycythaemia vera associated with IgA vasculitis and nephrotic syndrome: a case report. Mod Rheumatol Case Rep 2020; 4:289-295. [PMID: 33087019 DOI: 10.1080/24725625.2020.1728061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
We report a case of polycythaemia vera (PV) associated with IgA vasculitis. A 45-year-old man was admitted for evaluation of abdominal pain and palpable purpura. IgA vasculitis was diagnosed, and oral prednisolone therapy (30 mg/day) was initiated. On day 6, the patient developed left hemiparesis, and magnetic resonance imaging revealed acute cerebral infarction. Bone marrow biopsy results and the identification of a Janus kinase 2 (JAK2) mutation led to the diagnosis of PV. Despite steroid therapy, urine protein levels increased to 15 g/g・Cre. Renal biopsy demonstrated mild mesangial proliferation with IgA deposits, but immunosuppressive therapy was partially effective. This case suggests that PV can be a complication of IgA vasculitis and that preventive measures for thrombosis should be taken in such cases.
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Affiliation(s)
- Hinako Kondo
- Department of Rheumatology, Osaki Citizen Hospital, Osaki, Japan
| | - Ryu Watanabe
- Department of Rheumatology, Osaki Citizen Hospital, Osaki, Japan.,Department of Hematology and Rheumatology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Soshi Okazaki
- Department of Rheumatology, Osaki Citizen Hospital, Osaki, Japan
| | - Kaori Kuriyama
- Department of Rheumatology, Osaki Citizen Hospital, Osaki, Japan
| | - Tetsuro Ochi
- Department of Hematology and Rheumatology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Gen Yamada
- Department of Nephrology and Endocrinology, Osaki Citizen Hospital, Osaki, Japan
| | - Akira Sugiura
- Department of Nephrology and Endocrinology, Osaki Citizen Hospital, Osaki, Japan
| | - Hiromu Chiba
- Department of Dermatology, Osaki Citizen Hospital, Osaki, Japan
| | - Akira Tsukada
- Department of Dermatology, Osaki Citizen Hospital, Osaki, Japan
| | - Shinji Taniuchi
- Department of Pathology, Osaki Citizen Hospital, Osaki, Japan
| | - Takehiko Igarashi
- Department of Gastroenterology, Osaki Citizen Hospital, Osaki, Japan
| | - Masataka Kudo
- Department of Nephrology and Endocrinology, Osaki Citizen Hospital, Osaki, Japan
| | - Hideo Harigae
- Department of Hematology and Rheumatology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Hiroshi Fujii
- Department of Hematology and Rheumatology, Tohoku University Graduate School of Medicine, Sendai, Japan
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15
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Park SY, Lee CJ, Choi JH, Kim JH, Kim JW, Kim JY, Nam JS. The JAK2/STAT3/CCND2 Axis promotes colorectal Cancer stem cell persistence and radioresistance. J Exp Clin Cancer Res 2019; 38:399. [PMID: 31511084 PMCID: PMC6737692 DOI: 10.1186/s13046-019-1405-7] [Citation(s) in RCA: 155] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Accepted: 09/02/2019] [Indexed: 12/24/2022]
Abstract
Background Radiotherapy (RT) is a highly effective multimodal nonsurgical treatment that is essential for patients with advanced colorectal cancer (CRC). Nevertheless, cell subpopulations displaying intrinsic radioresistance survive after RT. The reactivation of their proliferation and successful colonization at local or distant sites may increase the risk of poor clinical outcomes. Recently, radioresistant cancer cells surviving RT were reported to exhibit a more aggressive phenotype than parental cells, although the underlying mechanisms remain unclear. Methods By investigating public databases containing CRC patient data, we explored potential radioresistance-associated signaling pathways. Then, their mechanistic roles in radioresistance were investigated through multiple validation steps using patient-derived primary CRC cells, human CRC cell lines, and CRC xenografts. Results Janus kinase (JAK)/signal transducer and activator of transcription (STAT) signaling was activated in radioresistant CRC tissues in correlation with local and distant metastases. JAK2 was preferentially overexpressed in the CRC stem cell subpopulation, which was accompanied by the phosphorylation of STAT proteins, especially STAT3. JAK2/STAT3 signaling played an essential role in promoting tumor initiation and radioresistance by limiting apoptosis and enhancing clonogenic potential. Mechanistically, the direct binding of STAT3 to the cyclin D2 (CCND2) promoter increased CCND2 transcription. CCND2 expression was required for persistent cancer stem cell (CSC) growth via the maintenance of an intact cell cycle and proliferation with low levels of DNA damage accumulation. Conclusion Herein, we first identified JAK2/STAT3/CCND2 signaling as a resistance mechanism for the persistent growth of CSCs after RT, suggesting potential biomarkers and regimens for improving outcomes among CRC patients.
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Affiliation(s)
- So-Yeon Park
- School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea.,Cell Logistics Research Center, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Choong-Jae Lee
- School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Jang-Hyun Choi
- School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Jee-Heun Kim
- School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Ji-Won Kim
- School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Ji-Young Kim
- School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Jeong-Seok Nam
- School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea. .,Cell Logistics Research Center, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea.
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16
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Asadzadeh-Aghdaei H, Mashayekhi K, Koushki K, Azimzadeh P, Rostami-Nejad M, Amani D, Chaleshi V, Haftcheshmeh SM, Sahebkar A, Zali MR. V617F-independent upregulation of JAK2 gene expression in patients with inflammatory bowel disease. J Cell Biochem 2019; 120:15746-15755. [PMID: 31069840 DOI: 10.1002/jcb.28844] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Revised: 01/12/2019] [Accepted: 01/25/2019] [Indexed: 12/15/2022]
Abstract
BACKGROUND Inflammatory bowel disease (IBD) is one of the most important immune-mediated disorders of the gastrointestinal tract. Besides, IBD is associated with numerous extraintestinal complications such as venous thromboembolism (VTE), an important risk factor for vascular complications, which results in the increased morbidity and mortality. The JAK2 (Janus kinase 2) V617F mutation is a well-known point mutation which is involved in the pathogenesis of IBD, and VTE. Therefore, the aims of this study were to evaluate expression of JAK2 and association of V617F mutation in JAK2 of Iranian patients with IBD. METHODS Two hundred and forty-six patients with IBD (209 UC and 37 CD) and 206 healthy controls were enrolled in this study. The genomic DNA and total RNA were extracted from peripheral blood mononuclear cells (PBMCs). Then, the JAK2 V617F mutation detection was performed using the restriction fragment length polymorphism (RFLP) method. In addition, the JAK2 mRNA expression was evaluated using a quantitative polymerase chain reaction (q-PCR) using the SYBR Green assay. RESULTS There was no association of V61F mutation in patients with IBD with or without thrombosis compared with healthy control. However, the relative mRNA expression of JAK2 was significantly upregulated in patients with IBD in comparison with healthy control (P < 0.0001). In addition, the JAK2 mRNA expression was significantly decreased in patients with IBD having thrombosis compared with those without thrombosis ( P < 0.0001). CONCLUSIONS Taken together our findings suggested that JAK2 V61F-independent upregulation of JAK2 mRNA expression in patients with IBD. Moreover, despite the absence of JAK2 V617F mutation in patients with IBD, the increased gene expression of JAK2 can be explained by another molecular mechanism such as regulation of gene expression at the transcriptional level which may play crucial roles in the pathogenesis of IBD.
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Affiliation(s)
- Hamid Asadzadeh-Aghdaei
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Kazem Mashayekhi
- Immuno-Biochemistry Lab, Immunology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Khadijeh Koushki
- Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Pedram Azimzadeh
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Rostami-Nejad
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Davar Amani
- Immunology Department, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Vahid Chaleshi
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Saeed Mohammadian Haftcheshmeh
- Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Medical Immunology, Nanotechnology Research Center, BuAli Research Institute, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amirhossein Sahebkar
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
- Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Reza Zali
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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17
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Oh HN, Seo JH, Lee MH, Kim C, Kim E, Yoon G, Cho SS, Cho YS, Choi HW, Shim JH, Chae JI. Licochalcone C induced apoptosis in human oral squamous cell carcinoma cells by regulation of the JAK2/STAT3 signaling pathway. J Cell Biochem 2018; 119:10118-10130. [PMID: 30129052 DOI: 10.1002/jcb.27349] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 06/26/2018] [Indexed: 01/09/2023]
Abstract
Oral cancer is of an aggressive malignancy that arises on oral cavity and lip, 90% of cancers histologically originated in the squamous cells. Licochalcone (LC)C has been known as natural phenolic chalconoid substances, and its origin is the root of Glycyrrhiza glabra or Glycyrrhiza inflata. LCC inhibited oral squamous cell carcinoma (OSCC) cell viability, mitochondrial function, and anchorage-independent growth in a dose-dependent manner. To investigate the ability of LCC to target Janus kinase 2 (JAK2), we performed pull-down binding assay, kinase assay, and docking simulation. The molecular docking studies were performed between JAK2 and the potent inhibitor LCC. It was shown that LCC tightly interacted with ATP-binding site of JAK2. In addition, LCC inhibited the JAK2/signal transducer and activator of transcription 3 pathway, upregulated p21, and downregulated Bcl-2, Mcl-1, and Survivin, while it disrupted mitochondrial membrane potential and subsequently caused cytochrome c release with activation of multi-caspase, eventually leading to apoptosis in HN22 and HSC4 cells. LCC elevated the protein levels of Bax, cleaved Bid and PARP, and increased Apaf-1, and this effect was reversed by LCC treatment. Our results demonstrated that treatment of OSCC cells with LCC induced the death receptor (DR)4 and DR5 expression level with the generation of reactive oxygen species and the upregulation of CHOP protein expression. Taken together, these results could provide the basis for clinical application as a new therapeutic strategy in the treatment of oral cancer.
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Affiliation(s)
- Ha-Na Oh
- Department of Pharmacy, College of Pharmacy and Natural Medicine Research Institute, Mokpo National University, Muan-Gun, Jeonnam, Republic of Korea
| | - Ji-Hye Seo
- Department of Dental Pharmacology, School of Dentistry and Institute of Oral Bioscience, BK21 Plus, Chonbuk National University, Jeonju, Republic of Korea
| | - Mee-Hyun Lee
- China-US (Henan) Hormel Cancer Institute, Zhengzhou, Henan, China
| | - Cheolhee Kim
- Department of Pharmacy, College of Pharmacy, Chosun University, Gwangju, Republic of Korea
| | - Eunae Kim
- Department of Pharmacy, College of Pharmacy, Chosun University, Gwangju, Republic of Korea
| | - Goo Yoon
- Department of Pharmacy, College of Pharmacy and Natural Medicine Research Institute, Mokpo National University, Muan-Gun, Jeonnam, Republic of Korea
| | - Seung-Sik Cho
- Department of Pharmacy, College of Pharmacy and Natural Medicine Research Institute, Mokpo National University, Muan-Gun, Jeonnam, Republic of Korea
| | - Young Sik Cho
- Department of Pharmacy, Keimyung University, Daegu, Republic of Korea
| | - Hyun Woo Choi
- Department of Animal Science, Chonbuk National University, Jeonju, Republic of Korea
| | - Jung-Hyun Shim
- Department of Pharmacy, College of Pharmacy and Natural Medicine Research Institute, Mokpo National University, Muan-Gun, Jeonnam, Republic of Korea.,China-US (Henan) Hormel Cancer Institute, Zhengzhou, Henan, China
| | - Jung-Il Chae
- Department of Dental Pharmacology, School of Dentistry and Institute of Oral Bioscience, BK21 Plus, Chonbuk National University, Jeonju, Republic of Korea
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18
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Lv K, Jiang J, Donaghy R, Riling CR, Cheng Y, Chandra V, Rozenova K, An W, Mohapatra BC, Goetz BT, Pillai V, Han X, Todd EA, Jeschke GR, Langdon WY, Kumar S, Hexner EO, Band H, Tong W. CBL family E3 ubiquitin ligases control JAK2 ubiquitination and stability in hematopoietic stem cells and myeloid malignancies. Genes Dev 2017; 31:1007-1023. [PMID: 28611190 PMCID: PMC5495118 DOI: 10.1101/gad.297135.117] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2017] [Accepted: 05/23/2017] [Indexed: 01/08/2023]
Abstract
Here, Lv et al. report that the CBL family E3 ubiquitin ligases down-regulate JAK2 stability and signaling via the adaptor protein LNK/SH2B3. Their results reveal a novel signaling axis that regulates JAK2 in normal and malignant HSPCs and suggest new therapeutic strategies for treating CBLmut myeloid malignancies. Janus kinase 2 (JAK2) is a central kinase in hematopoietic stem/progenitor cells (HSPCs), and its uncontrolled activation is a prominent oncogenic driver of hematopoietic neoplasms. However, molecular mechanisms underlying the regulation of JAK2 have remained elusive. Here we report that the Casitas B-cell lymphoma (CBL) family E3 ubiquitin ligases down-regulate JAK2 stability and signaling via the adaptor protein LNK/SH2B3. We demonstrated that depletion of CBL/CBL-B or LNK abrogated JAK2 ubiquitination, extended JAK2 half-life, and enhanced JAK2 signaling and cell growth in human cell lines as well as primary murine HSPCs. Built on these findings, we showed that JAK inhibitor (JAKi) significantly reduced aberrant HSPCs and mitigated leukemia development in a mouse model of aggressive myeloid leukemia driven by loss of Cbl and Cbl-b. Importantly, primary human CBL mutated (CBLmut) leukemias exhibited increased JAK2 protein levels and signaling and were hypersensitive to JAKi. Loss-of-function mutations in CBL E3 ubiquitin ligases are found in a wide range of myeloid malignancies, which are diseases without effective treatment options. Hence, our studies reveal a novel signaling axis that regulates JAK2 in normal and malignant HSPCs and suggest new therapeutic strategies for treating CBLmut myeloid malignancies.
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Affiliation(s)
- Kaosheng Lv
- Division of Hematology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, USA.,Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Jing Jiang
- Division of Hematology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, USA.,Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Ryan Donaghy
- Division of Hematology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, USA.,Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | | | - Ying Cheng
- Division of Hematology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, USA.,Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Vemika Chandra
- Division of Hematology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, USA.,Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Krasimira Rozenova
- Division of Hematology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, USA.,Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Wei An
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, Nebraska 6819, USA.,Department of Genetics, Cell Biology, and Anatomy, University of Nebraska Medical Center, Omaha, Nebraska 6819, USA
| | - Bhopal C Mohapatra
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, Nebraska 6819, USA.,Department of Genetics, Cell Biology, and Anatomy, University of Nebraska Medical Center, Omaha, Nebraska 6819, USA
| | - Benjamin T Goetz
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, Nebraska 6819, USA.,Department of Genetics, Cell Biology, and Anatomy, University of Nebraska Medical Center, Omaha, Nebraska 6819, USA
| | - Vinodh Pillai
- Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, USA
| | - Xu Han
- Division of Hematology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, USA.,Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Emily A Todd
- Progenra, Inc., Malvern, Pennsylvania 19355, USA
| | - Grace R Jeschke
- Division of Hematology and Oncology, Abramson Cancer Center, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Wallace Y Langdon
- School of Pathology and Laboratory Medicine, University of Western Australia, Crawley, Western Australia 6009, Australia
| | - Suresh Kumar
- Progenra, Inc., Malvern, Pennsylvania 19355, USA
| | - Elizabeth O Hexner
- Division of Hematology and Oncology, Abramson Cancer Center, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Hamid Band
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, Nebraska 6819, USA.,Department of Genetics, Cell Biology, and Anatomy, University of Nebraska Medical Center, Omaha, Nebraska 6819, USA
| | - Wei Tong
- Division of Hematology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, USA.,Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
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Ueda F, Tago K, Tamura H, Funakoshi-Tago M. Three Tyrosine Residues in the Erythropoietin Receptor Are Essential for Janus Kinase 2 V617F Mutant-induced Tumorigenesis. J Biol Chem 2016; 292:1826-1846. [PMID: 27998978 DOI: 10.1074/jbc.m116.749465] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 12/20/2016] [Indexed: 11/06/2022] Open
Abstract
The erythropoietin receptor (EpoR) regulates development of blood cells, and its full activation normally requires the cytokine erythropoietin (Epo). In the case of myeloproliferative neoplasms (MPN), Epo-independent signaling through EpoR can be caused by a point mutation, V617F, in the EpoR-interacting tyrosine kinase Janus kinase 2 (JAK2). In cells expressing the JAK2 V617F mutant, eight tyrosine residues in the intracellular domain of EpoR are phosphorylated, but the functional role of these phosphorylations in oncogenic signaling is incompletely understood. Here, to evaluate the functional consequences of the phosphorylation of these tyrosine residues, we constructed an EpoR-8YF mutant in which we substituted all eight tyrosine residues with phenylalanine. Co-expression of EpoR-8YF with the JAK2 V617F mutant failed to induce cytokine-independent cell proliferation and tumorigenesis, indicating that JAK2-mediated EpoR phosphorylation is the reason for JAK2 V617F mutant-induced oncogenic signaling. An exhaustive mutational analysis of the eight EpoR tyrosine residues indicated that three of these residues, Tyr-343, Tyr-460, and Tyr-464, are required for the JAK2 V617F mutant to exhibit its oncogenic activity. We also showed that phosphorylation at these three residues was necessary for full activation of the transcription factor STAT5, which is a critical downstream factor of JAK2 V617F-induced oncogenic signaling. In contrast, Epo stimulation could moderately stimulate the proliferation of cells expressing wild type JAK2 and EpoR-8YF, suggesting that the requirement of the phosphorylation of these three tyrosine residues seems to be specific for the oncogenic proliferation provoked by V617F mutation. Collectively, these results have revealed that phosphorylation of Tyr-343, Tyr-460, and Tyr-464 in EpoR underlies JAK2 V617F mutant-induced tumorigenesis. We propose that the targeted disruption of this pathway has therapeutic utility for managing MPN.
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Affiliation(s)
- Fumihito Ueda
- From the Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512
| | - Kenji Tago
- the Division of Structural Biochemistry, Department of Biochemistry, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke-shi, Tochigi-ken 329-0498, Japan
| | - Hiroomi Tamura
- From the Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512
| | - Megumi Funakoshi-Tago
- From the Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512.
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20
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Wu M, Chen M, Jing Y, Gu J, Mei S, Yao Q, Zhou J, Yang M, Sun L, Wang W, Hu H, Wüthrich RP, Mei C. The C-terminal tail of polycystin-1 regulates complement factor B expression by signal transducer and activator of transcription 1. Am J Physiol Renal Physiol 2016; 310:F1284-94. [PMID: 26984954 DOI: 10.1152/ajprenal.00428.2015] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Accepted: 03/07/2016] [Indexed: 01/12/2023] Open
Abstract
Inhibition of the overactivated alternative complement pathway in autosomal dominant polycystic kidney disease (ADPKD) retards disease progression in animal models; however, it remains unknown how complement factor B (CFB) is upregulated in ADPKD. Here, we showed that the overexpression of CFB in cystic kidneys is associated with increased JAK2/STAT1 activity and enhanced expression of the polycystin-1 C-terminal tail (PC1-CTT). Overexpression or blockage of STAT1 increased or decreased CFB expression and CFB promoter activity. Moreover, overexpression of PC1-CTT induced JAK2/STAT1 activation and CFB upregulation in renal tubular epithelial cells. Furthermore, PC1-CTT overexpression increased human CFB promoter activity, whereas dominant negative STAT1 plasmids or mutation of putative STAT1 responsive elements decreased PC1-CTT-induced CFB promoter activity. The effect of CFB on macrophage differentiation was tested on a mouse macrophage cell line. Bioactive CFB dose dependently promoted macrophage M2 phenotype conversion. In addition, conditioned media from renal epithelial cells promoted macrophage M2 phenotype conversion which was blocked by STAT1 inhibition in a dose-dependent manner. Conditioned media from PC1-CTT-transfected renal epithelial cells further promoted macrophage M2 phenotype conversion, which was suppressed by fludarabine or a CFB antibody. In addition, we show that NF-κB acts downstream of PC1-CTT and may partly mediate PC1-CTT-induced CFB expression. In conclusion, our study reveals possible mechanisms of CFB upregulation in ADPKD and a novel role of PC1-CTT in ADPKD-associated inflammation. Furthermore, our study suggests that targeting STAT1 may be a new strategy to prevent inflammation in the kidney of patients with ADPKD.
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Affiliation(s)
- Ming Wu
- Kidney Institute, Department of Nephrology, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Meihan Chen
- Kidney Institute, Department of Nephrology, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China;
| | - Ying Jing
- Kidney Institute, Department of Nephrology, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China; Department of Blood Purification, General Hospital of Jinan Military Command of PLA, Shandong, China; and
| | - Junhui Gu
- Kidney Institute, Department of Nephrology, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Shuqin Mei
- Kidney Institute, Department of Nephrology, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Qing Yao
- Kidney Institute, Department of Nephrology, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Jie Zhou
- Kidney Institute, Department of Nephrology, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Ming Yang
- Kidney Institute, Department of Nephrology, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Lijun Sun
- Kidney Institute, Department of Nephrology, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Wutao Wang
- Kidney Institute, Department of Nephrology, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Huimin Hu
- Kidney Institute, Department of Nephrology, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | | | - Changlin Mei
- Kidney Institute, Department of Nephrology, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
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21
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Shi SY, Zhang W, Luk CT, Sivasubramaniyam T, Brunt JJ, Schroer SA, Desai HR, Majerski A, Woo M. JAK2 promotes brown adipose tissue function and is required for diet- and cold-induced thermogenesis in mice. Diabetologia 2016; 59:187-196. [PMID: 26515423 DOI: 10.1007/s00125-015-3786-2] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Accepted: 09/28/2015] [Indexed: 11/29/2022]
Abstract
AIMS/HYPOTHESIS Non-shivering thermogenesis in adipose tissue can be activated by excessive energy intake or following cold exposure. The molecular mechanisms regulating this activation have not been fully elucidated. The Janus kinase (JAK) - signal transducer and activator of transcription (STAT) pathway mediates the signal transduction of numerous hormones and growth factors that regulate adipose tissue development and function, and may play a role in adaptive thermogenesis. METHODS We analysed mRNA and protein levels of uncoupling protein 1 (UCP1) and JAK2 in different adipose depots in response to metabolic and thermal stress. The in vivo role of JAK2 in adaptive thermogenesis was examined using mice with adipocyte-specific Jak2 deficiency (A-Jak2 KO). RESULTS We show in murine brown adipose tissue (BAT) that JAK2 is upregulated together with UCP1 in response to high-fat diet (HFD) feeding and cold exposure. In contrast to white adipose tissue, where JAK2 was dispensable for UCP1 induction, we identified an essential role for BAT JAK2 in diet- and cold-induced thermogenesis via mediating the thermogenic response to β-adrenergic stimulation. Accordingly, A-Jak2 KO mice were unable to upregulate BAT UCP1 following a HFD or after cold exposure. Therefore, A-Jak2 KO mice were cold intolerant and susceptible to HFD-induced obesity and diabetes. CONCLUSIONS/INTERPRETATION Taken together, our results suggest that JAK2 plays a critical role in BAT function and adaptive thermogenesis. Targeting the JAK-STAT pathway may be a novel therapeutic approach for the treatment of obesity and related metabolic disorders.
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Affiliation(s)
- Sally Yu Shi
- Toronto General Research Institute, 101 College Street, MaRS Centre/TMDT, Toronto, ON, Canada, M5G 1L7
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada
| | - Wei Zhang
- Toronto General Research Institute, 101 College Street, MaRS Centre/TMDT, Toronto, ON, Canada, M5G 1L7
- Department of Endocrinology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China
| | - Cynthia T Luk
- Toronto General Research Institute, 101 College Street, MaRS Centre/TMDT, Toronto, ON, Canada, M5G 1L7
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada
| | - Tharini Sivasubramaniyam
- Toronto General Research Institute, 101 College Street, MaRS Centre/TMDT, Toronto, ON, Canada, M5G 1L7
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada
| | - Jara J Brunt
- Toronto General Research Institute, 101 College Street, MaRS Centre/TMDT, Toronto, ON, Canada, M5G 1L7
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada
| | - Stephanie A Schroer
- Toronto General Research Institute, 101 College Street, MaRS Centre/TMDT, Toronto, ON, Canada, M5G 1L7
| | - Harsh R Desai
- Toronto General Research Institute, 101 College Street, MaRS Centre/TMDT, Toronto, ON, Canada, M5G 1L7
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Alexandra Majerski
- Toronto General Research Institute, 101 College Street, MaRS Centre/TMDT, Toronto, ON, Canada, M5G 1L7
| | - Minna Woo
- Toronto General Research Institute, 101 College Street, MaRS Centre/TMDT, Toronto, ON, Canada, M5G 1L7.
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada.
- Division of Endocrinology, Department of Medicine, Toronto General Hospital, University Health Network, University of Toronto, Toronto, ON, Canada.
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22
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Hart AC, Schroeder GM, Wan H, Grebinski J, Inghrim J, Kempson J, Guo J, Pitts WJ, Tokarski JS, Sack JS, Khan JA, Lippy J, Lorenzi MV, You D, McDevitt T, Vuppugalla R, Zhang Y, Lombardo LJ, Trainor GL, Purandare AV. Structure-Based Design of Selective Janus Kinase 2 Imidazo[4,5-d]pyrrolo[2,3-b]pyridine Inhibitors. ACS Med Chem Lett 2015; 6:845-9. [PMID: 26288682 DOI: 10.1021/acsmedchemlett.5b00225] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Accepted: 07/10/2015] [Indexed: 12/12/2022] Open
Abstract
Early hit to lead work on a pyrrolopyridine chemotype provided access to compounds with biochemical and cellular potency against Janus kinase 2 (JAK2). Structure-based drug design along the extended hinge region of JAK2 led to the identification of an important H-bond interaction with the side chain of Tyr 931, which improved JAK family selectivity. The 4,5-dimethyl thiazole analogue 18 demonstrated high levels of JAK family selectivity and was identified as a promising lead for the program.
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Affiliation(s)
- Amy C. Hart
- Bristol-Myers Squibb Research & Development, Princeton, New Jersey 08543, United States
| | - Gretchen M. Schroeder
- Bristol-Myers Squibb Research & Development, Princeton, New Jersey 08543, United States
| | - Honghe Wan
- Bristol-Myers Squibb Research & Development, Princeton, New Jersey 08543, United States
| | - James Grebinski
- Bristol-Myers Squibb Research & Development, Princeton, New Jersey 08543, United States
| | - Jennifer Inghrim
- Bristol-Myers Squibb Research & Development, Princeton, New Jersey 08543, United States
| | - James Kempson
- Bristol-Myers Squibb Research & Development, Princeton, New Jersey 08543, United States
| | - Junqing Guo
- Bristol-Myers Squibb Research & Development, Princeton, New Jersey 08543, United States
| | - William J. Pitts
- Bristol-Myers Squibb Research & Development, Princeton, New Jersey 08543, United States
| | - John S. Tokarski
- Bristol-Myers Squibb Research & Development, Princeton, New Jersey 08543, United States
| | - John S. Sack
- Bristol-Myers Squibb Research & Development, Princeton, New Jersey 08543, United States
| | - Javed A. Khan
- Bristol-Myers Squibb Research & Development, Princeton, New Jersey 08543, United States
| | - Jonathan Lippy
- Bristol-Myers Squibb Research & Development, Princeton, New Jersey 08543, United States
| | - Matthew V. Lorenzi
- Bristol-Myers Squibb Research & Development, Princeton, New Jersey 08543, United States
| | - Dan You
- Bristol-Myers Squibb Research & Development, Princeton, New Jersey 08543, United States
| | - Theresa McDevitt
- Bristol-Myers Squibb Research & Development, Princeton, New Jersey 08543, United States
| | - Ragini Vuppugalla
- Bristol-Myers Squibb Research & Development, Princeton, New Jersey 08543, United States
| | - Yueping Zhang
- Bristol-Myers Squibb Research & Development, Princeton, New Jersey 08543, United States
| | - Louis J. Lombardo
- Bristol-Myers Squibb Research & Development, Princeton, New Jersey 08543, United States
| | - George L. Trainor
- Bristol-Myers Squibb Research & Development, Princeton, New Jersey 08543, United States
| | - Ashok V. Purandare
- Bristol-Myers Squibb Research & Development, Princeton, New Jersey 08543, United States
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23
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Bhaskaran S, Zaluski J, Banes-Berceli A. Molecular interactions of serotonin (5-HT) and endothelin-1 in vascular smooth muscle cells: in vitro and ex vivo analyses. Am J Physiol Cell Physiol 2014; 306:C143-51. [PMID: 24196534 PMCID: PMC3919985 DOI: 10.1152/ajpcell.00247.2013] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Accepted: 10/29/2013] [Indexed: 11/22/2022]
Abstract
Elevated levels of serotonin (5-HT) and endothelin-1 (ET-1) may be involved in cardiovascular complications of diabetes mellitus. Data suggest supraphysiological concentrations of 5-HT (10(-6) M) potentiate the ability of ET-1 to stimulate DNA synthesis and vascular smooth muscle cell (VSMC) proliferation in vitro via activation of mitogen-activated protein kinase (p42/44 MAPK) and Janus kinase 2 (JAK2) pathways. Additionally, 5-HT enhances agonist-induced contractions via p42/44 MAPK and an unknown tyrosine kinase. However, the exact mechanisms of the 5-HT/ET-1 interactions and whether these effects occur at physiological levels (10(-9) M) are unknown. Therefore, we hypothesized that interactions between 5-HT and ET-1 at physiological concentrations in VSMC enhanced activation of both p42/44 MAPK and JAK2 pathways contributing to vascular growth and contractile responses. With the use of rat VSMC and Western blot analysis, our data suggest no effect of acute (30 min) preincubation with 5-HT (10(-9) M) and/or ET-1 (10(-9) M) on the activation of either pathway in normal or high glucose conditions. To determine if there was altered vascular reactivity in intact vessels we tested the effects of 5-HT and ET-1 interaction using myographs to measure isometric contractions of rat thoracic aortic rings. 5-HT (10(-9) M) and ET-1 (10(-12) M) stimulate enhanced contractile responses to each other that were inhibited by JAK2 and p42/44 MAPK antagonists. Our findings demonstrate that both 5-HT and ET-1 at physiological concentrations could interact with each other and activate p42/44 MAPK and JAK2 signaling pathways to cause an increase in smooth muscle contraction that could lead to altered vascular function.
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Affiliation(s)
- Subha Bhaskaran
- Department of Biological Sciences, Oakland University, Rochester, Michigan
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