Tumor Suppressor Proteins

肿瘤抑制蛋白
  • 文章类型: Journal Article
    BRCA1相关蛋白1(BAP1)是公认的抑癌基因。种系BAP1致病性/可能的致病性变异与多种肿瘤的易感性有关。包括葡萄膜黑色素瘤,恶性胸膜和腹膜间皮瘤,肾细胞癌和皮肤特定的非恶性肿瘤,作为常染色体显性遗传BAP1-肿瘤易感性综合征的一部分。BAP1携带者发展至少一种BAP1相关肿瘤的总体终生风险高达85%,尽管由于确定偏差,目前对风险的估计可能被高估了。至于许多罕见的癌症易感性综合征,有有限的科学证据来支持监视的效用,因此,BAP1携带者的管理建议基于专家意见。迄今为止,欧洲对BAP1携带者的建议尚未发表,但由于这种最近描述的综合征的新兴表型以及通过大型基因面板或肿瘤测序对BAP1携带者的鉴定增加,因此是必要的。为了解决这个问题,英国CanGene-CanVar项目的临床指南工作组邀请欧洲合作者合作制定指南,以协调欧洲范围内的监测计划.关于BAP1检测和监测的建议是在一个核心小组和一个由包括遗传学家在内的34名欧洲专家组成的扩展专家组完成的文献综述和德尔菲调查之后提出的。眼科医生,肿瘤学家,皮肤科医生和病理学家。人们认识到,随着研究合作的进一步数据告知表型谱和监测结果,这些主要基于证据但务实的建议将随着时间的推移而发展。
    BRCA1-associated protein-1 (BAP1) is a recognised tumour suppressor gene. Germline BAP1 pathogenic/likely pathogenic variants are associated with predisposition to multiple tumours, including uveal melanoma, malignant pleural and peritoneal mesothelioma, renal cell carcinoma and specific non-malignant neoplasms of the skin, as part of the autosomal dominant BAP1-tumour predisposition syndrome. The overall lifetime risk for BAP1 carriers to develop at least one BAP1-associated tumour is up to 85%, although due to ascertainment bias, current estimates of risk are likely to be overestimated. As for many rare cancer predisposition syndromes, there is limited scientific evidence to support the utility of surveillance and, therefore, management recommendations for BAP1 carriers are based on expert opinion. To date, European recommendations for BAP1 carriers have not been published but are necessary due to the emerging phenotype of this recently described syndrome and increased identification of BAP1 carriers via large gene panels or tumour sequencing. To address this, the Clinical Guideline Working Group of the CanGene-CanVar project in the United Kingdom invited European collaborators to collaborate to develop guidelines to harmonize surveillance programmes within Europe. Recommendations with respect to BAP1 testing and surveillance were achieved following literature review and Delphi survey completed by a core group and an extended expert group of 34 European specialists including Geneticists, Ophthalmologists, Oncologists, Dermatologists and Pathologists. It is recognised that these largely evidence-based but pragmatic recommendations will evolve over time as further data from research collaborations informs the phenotypic spectrum and surveillance outcomes.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Letter
    暂无摘要。
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Sci-hub)

  • 文章类型: Journal Article
    背景:脓毒症是一种严重的临床疾病,预后不良,尽管在诊断和治疗方面有所改善。因此,新的生物标志物是必要的,可以帮助评估脓毒症患者的预后和改善临床结局.
    方法:基因表达谱GSE54514和GSE63042从GEO数据库下载。将原始数据对数化后,通过t检验筛选DEGs;然后,2个基因表达谱之间的共同DEGs通过上调和下调交集进行鉴定。使用生物信息学分析DEGs,并使用STRING构建了蛋白质-蛋白质相互作用(PPI)生存网络。基于GSE54514数据构建生存曲线,探讨核心基因与脓毒症患者预后的关系。
    结果:在败血症的幸存者和非幸存者之间确定了总共688个常见的DEGs,96个基因参与生存网络。关键基因信号转导和转录激活因子5A(STAT5A),CCAAT/增强子结合蛋白β(CEBPB),Myc原癌基因蛋白(MYC),和REL相关蛋白(RELA)在脓毒症幸存者中的表达增加。根据生存分析,这些关键基因与患者的生存时间呈正相关。
    结论:我们的发现表明STAT5A基因,CEBPB,MYC,RELA对预测脓毒症患者的预后有重要意义。
    BACKGROUND: Sepsis is a serious clinical condition with a poor prognosis, despite improvements in diagnosis and treatment.Therefore, novel biomarkers are necessary that can help with estimating prognosis and improving clinical outcomes of patients with sepsis.
    METHODS: The gene expression profiles GSE54514 and GSE63042 were downloaded from the GEO database. DEGs were screened by t test after logarithmization of raw data; then, the common DEGs between the 2 gene expression profiles were identified by up-regulation and down-regulation intersection. The DEGs were analyzed using bioinformatics, and a protein-protein interaction (PPI) survival network was constructed using STRING. Survival curves were constructed to explore the relationship between core genes and the prognosis of sepsis patients based on GSE54514 data.
    RESULTS: A total of 688 common DEGs were identified between survivors and non-survivors of sepsis, and 96 genes were involved in survival networks. The crucial genes Signal transducer and activator of transcription 5A (STAT5A), CCAAT/enhancer-binding protein beta (CEBPB), Myc proto-oncogene protein (MYC), and REL-associated protein (RELA) were identified and showed increased expression in sepsis survivors. These crucial genes had a positive correlation with patients\' survival time according to the survival analysis.
    CONCLUSIONS: Our findings indicate that the genes STAT5A, CEBPB, MYC, and RELA may be important in predicting the prognosis of sepsis patients.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Sci-hub)

       PDF(Pubmed)

  • 文章类型: Journal Article
    The germline BAP1 (BRCA1-associated protein-1) mutation and associated cancer pre-disposition syndrome was first described in 2011. Since then, physicians have considered this diagnosis for patients with a characteristic personal or family history of BAP1-associated tumours (mainly uveal and cutaneous melanoma, pleural/peritoneal mesothelioma, renal cell carcinoma and BAP1-deficient melanocytic lesions). However, a positive germline BAP1 mutation detection creates significant uncertainty in terms of appropriate cancer surveillance. A number of groups have proposed surveillance plans but important management dilemmas remain unresolved. The lifetime risk of developing cancer is not known and it is not clear if surveillance would lead to detecting cancer at an earlier stage or change survival outcomes. A consensus monitoring strategy was initially proposed at the Melanoma Institute Australia Melanoma Multidisciplinary Team meeting and later discussed with specialists in the field of cancer genetics, pathology, radiology, medical oncology, ophthalmology and dermatology. The objectives were to facilitate early diagnosis, incorporating where possible, clinically based and low/non-ionising radiation imaging modalities, applying the principles of a good screening test and a multidisciplinary focus.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    2015年11月9日至10日,在檀香山的夏威夷大学癌症中心举行了自然发生的Aspestiform纤维暴露人群间皮瘤国际会议,夏威夷这次会议由国际肺癌研究协会共同主办,议程的设计得到了美国国家癌症研究所和国家环境健康科学研究所的工作人员的大量投入。一个多学科的参与者小组介绍了反映一系列学科观点的最新情况,包括矿物学,地质学,流行病学,毒理学,生物化学,分子生物学,遗传学,公共卫生,和临床肿瘤学。该小组确定了知识差距,这是预防和治疗恶性间皮瘤(MM)的障碍,以及解决障碍所需的下一步步骤。该手稿报告了该小组的努力,并着重于限制人群风险并降低MM发病率的策略。探索了四个主要主题:遗传风险,环境暴露,生物标志物,和临床干预。当疾病发生在种系BRCA1相关蛋白1突变的携带者中时,遗传学在MM中起着至关重要的作用。此外,看起来很可能,除了BRCA1相关蛋白1,其他未知的遗传变异也可能影响MM的个体发展风险,特别是接触石棉和相关的矿物纤维后。MM是一种几乎完全可以预防的恶性肿瘤,因为它通常是由接触商业石棉或具有石棉样健康影响的矿物纤维引起的。如erionite。过去在北美和欧洲,最突出的暴露来源与职业有关。目前的法规减少了这些国家的职业暴露;然而,有些人继续在旧建筑和其他环境中接触以前安装的石棉。此外,越来越多的人暴露在含有非商业石棉的农村地区,钙沸石,以及土壤或岩石中的其他矿物纤维(称为天然存在的石棉[NOA]),并且正在开发中。公共卫生当局,科学家,居民,和其他受影响的群体必须在接触石棉的地区共同努力,包括NOA,已在环境中记录以减轻或减少这种暴露。尽管目前尚无经证实可有效用于石棉/NOA暴露人群早期筛查和鉴定MM的血液生物标志物,在会议上提出了新的生物标志物,如高流动性组盒1和腓骨蛋白-3,是有希望的。人们普遍认为,目前对MM的治疗,基于手术和标准化疗,对总生存期(OS)的影响不大,这仍然令人沮丧。此外,尽管在临床试验中正在开发和探索急需的新型MM治疗方法,迫切需要投资于预防研究,其中有很好的机会降低MM的发病率和死亡率。
    On November 9 and 10, 2015, the International Conference on Mesothelioma in Populations Exposed to Naturally Occurring Asbestiform Fibers was held at the University of Hawaii Cancer Center in Honolulu, Hawaii. The meeting was cosponsored by the International Association for the Study of Lung Cancer, and the agenda was designed with significant input from staff at the U.S. National Cancer Institute and National Institute of Environmental Health Sciences. A multidisciplinary group of participants presented updates reflecting a range of disciplinary perspectives, including mineralogy, geology, epidemiology, toxicology, biochemistry, molecular biology, genetics, public health, and clinical oncology. The group identified knowledge gaps that are barriers to preventing and treating malignant mesothelioma (MM) and the required next steps to address barriers. This manuscript reports the group\'s efforts and focus on strategies to limit risk to the population and reduce the incidence of MM. Four main topics were explored: genetic risk, environmental exposure, biomarkers, and clinical interventions. Genetics plays a critical role in MM when the disease occurs in carriers of germline BRCA1 associated protein 1 mutations. Moreover, it appears likely that, in addition to BRCA1 associated protein 1, other yet unknown genetic variants may also influence the individual risk for development of MM, especially after exposure to asbestos and related mineral fibers. MM is an almost entirely preventable malignancy as it is most often caused by exposure to commercial asbestos or mineral fibers with asbestos-like health effects, such as erionite. In the past in North America and in Europe, the most prominent source of exposure was related to occupation. Present regulations have reduced occupational exposure in these countries; however, some people continue to be exposed to previously installed asbestos in older construction and other settings. Moreover, an increasing number of people are being exposed in rural areas that contain noncommercial asbestos, erionite, and other mineral fibers in soil or rock (termed naturally occurring asbestos [NOA]) and are being developed. Public health authorities, scientists, residents, and other affected groups must work together in the areas where exposure to asbestos, including NOA, has been documented in the environment to mitigate or reduce this exposure. Although a blood biomarker validated to be effective for use in screening and identifying MM at an early stage in asbestos/NOA-exposed populations is not currently available, novel biomarkers presented at the meeting, such as high mobility group box 1 and fibulin-3, are promising. There was general agreement that current treatment for MM, which is based on surgery and standard chemotherapy, has a modest effect on the overall survival (OS), which remains dismal. Additionally, although much needed novel therapeutic approaches for MM are being developed and explored in clinical trials, there is a critical need to invest in prevention research, in which there is a great opportunity to reduce the incidence and mortality from MM.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Sci-hub)

  • 文章类型: Journal Article
    Kif23 kinesin is an essential actor of cytokinesis in animals. It exists as two major isoforms, known as MKLP1 and CHO1, the longest of which, CHO1, contains two HXRXXS/T NDR/LATS kinase consensus sites. We demonstrate that these two sites are readily phosphorylated by NDR and LATS kinases in vitro, and this requires the presence of an upstream -5 histidine residue. We further show that these sites are phosphorylated in vivo and provide evidence revealing that LATS1,2 participate in the phosphorylation of the most C-terminal S814 site, present on both isoforms. This S814 phosphosite was previously reported to constitute a 14-3-3 binding site, which plays a role in Kif23 clustering during cytokinesis. Surprisingly, we found that phosphorylation of the upstream S716 NDR/LATS consensus site, present only in the longest Kif23 isoform, is required for efficient phosphorylation at S814, thus revealing sequential phosphorylation at these two sites, and differential regulation of Kif23-14-3-3 interaction for the two Kif23 isoforms. Finally, we provide evidence that Kif23 is largely unphosphorylated on S814 in post-abscission midbodies, making this Kif23 post-translational modification a potential marker to probe these structures.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    目的:召开了2012年国际结节性硬化症临床共识会议,以更新1998年的最后共识声明。皮肤和牙齿病变在结节性硬化症(TSC)中很常见,并且是患者经常关注的问题。识别这些病变对于早期诊断至关重要,考虑到可能改善患者预后的治疗进展。
    目的:详细的诊断建议,监视,以及TSC中皮肤和牙齿病变的管理。
    方法:TSC皮肤病学和牙科小组委员会,12个小组委员会中的1个,回顾了1997年至2012年的相关文献。
    结果:在提出建议之前,皮肤科和牙科小组委员会就皮肤和牙齿问题达成了共识,讨论,并在2012年6月14日至15日所有小组委员会的小组会议上达成一致。
    结论:在诊断标准中,皮肤和牙齿的表现包括11个主要特征中的4个和6个次要特征中的3个。TSC的明确诊断定义为存在至少2个主要特征或1个主要特征和2个或更多个次要特征;此外,TSC1或TSC2中的病理突变是诊断性的。皮肤和口腔检查应每年和每3至6个月进行一次,分别。干预可能适用于TSC皮肤或口腔病变出血,症状,毁容,或对功能产生负面影响。提出的选择包括手术切除,激光,或使用哺乳动物雷帕霉素靶抑制剂。
    OBJECTIVE: The 2012 International Tuberous Sclerosis Complex Clinical Consensus Conference was convened to update the last consensus statement in 1998. Skin and dental lesions are common in tuberous sclerosis complex (TSC) and are a frequent concern for patients. Recognition of these lesions is imperative for early diagnosis, given the treatment advances that may improve patient outcomes.
    OBJECTIVE: To detail recommendations for the diagnosis, surveillance, and management of skin and dental lesions in TSC.
    METHODS: The TSC Dermatology and Dentistry Subcommittee, 1 of 12 subcommittees, reviewed the relevant literature from 1997 to 2012.
    RESULTS: A consensus on skin and dental issues was achieved within the Dermatology and Dentistry Subcommittee before recommendations were presented, discussed, and agreed on in a group meeting of all subcommittees from June 14 to 15, 2012.
    CONCLUSIONS: Skin and dental findings comprise 4 of 11 major features and 3 of 6 minor features in the diagnostic criteria. A definite diagnosis of TSC is defined as the presence of at least 2 major features or 1 major and 2 or more minor features; in addition, a pathological mutation in TSC1 or TSC2 is diagnostic. Skin and oral examinations should be performed annually and every 3 to 6 months, respectively. Intervention may be indicated for TSC skin or oral lesions that are bleeding, symptomatic, disfiguring, or negatively affecting function. Options presented include surgical excision, laser(s), or use of a mammalian target of rapamycin inhibitor.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    Ataxia telangiectasia mutated (ATM) and DNA-dependent protein kinase catalytic subunits (DNA-PKcs) are members of the phosphatidylinositol 3-like family of serine/threonine kinases that phosphorylate serines or threonines when positioned adjacent to a glutamine residue (SQ/TQ). Both kinases are activated rapidly by DNA double-strand breaks (DSBs) and regulate the function of proteins involved in DNA damage responses. In developing lymphocytes, DSBs are generated during V(D)J recombination, which is required to assemble the second exon of all Ag receptor genes. This reaction is initiated through a DNA cleavage step by the RAG1 and RAG2 proteins, which together comprise an endonuclease that generates DSBs at the border of two recombining gene segments and their flanking recombination signals. This DNA cleavage step is followed by a joining step, during which pairs of DNA coding and signal ends are ligated to form a coding joint and a signal joint, respectively. ATM and DNA-PKcs are integrally involved in the repair of both signal and coding ends, but the targets of these kinases involved in the repair process have not been fully elucidated. In this regard, the RAG1 and RAG2 proteins, which each have several SQ/TQ motifs, have been implicated in the repair of RAG-mediated DSBs. In this study, we use a previously developed approach for studying chromosomal V(D)J recombination that has been modified to allow for the analysis of RAG1 and RAG2 function. We show that phosphorylation of RAG1 or RAG2 by ATM or DNA-PKcs at SQ/TQ consensus sites is dispensable for the joining step of V(D)J recombination.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Sci-hub)

  • 文章类型: Journal Article
    OBJECTIVE: This study aims to describe the phenotypic and genotypic characteristics of 45 Australian patients with tuberous sclerosis complex (TSC), to assess risk factors for intellectual disability, to compare patients with TSC1 and TSC2 mutations and to assess adherence to surveillance recommendations.
    METHODS: Phenotypic features were recorded in 45 patients who fulfilled established criteria for a diagnosis of definite TSC. All patients underwent TSC1 and TSC2 sequencing and multiplex ligand probe amplification. Features were compared in patients with TSC1 mutations versus TSC2 mutations. Recent surveillance was recorded at the point of first contact. Surveillance adherence was compared in the adult and paediatric cohorts.
    RESULTS: This cohort consisted of 31 children and 14 adults with definite TSC. The rates of TSC manifestations and TSC1 and TSC2 mutation detection rates were consistent with previous studies. There was a trend towards greater severity for patients with TSC2 mutations compared with their TSC1 counterparts, particularly for autistic spectrum disorder, but this did not reach statistical significance. The presence of seizures was shown to be a risk factor for intellectual disability (P < 0.001). Overall, 12/45 patients (27%) were not undergoing recommended surveillance at the point of first contact. Surveillance guidelines were being followed in 3/31 (11%) children compared with 9/14 (64%) adult patients (P < 0.05).
    CONCLUSIONS: The genotypic and phenotypic characteristics of this TSC cohort were consistent with previous studies. Surveillance rates in adult patients were significantly lower than in paediatric patients. This highlights the need for patients with TSC to undergo a focussed transition into adult services.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Sci-hub)

  • 文章类型: Journal Article
    Perineural invasion, the growth of tumor cells along nerves, is a key feature of pancreatic cancer. The cardinal symptom of pancreatic cancer, abdominal pain often radiating to the back, as well as the high frequency of local tumor recurrence following resection are both attributed to the unique ability of pancreatic tumor cells to invade the neuronal system. The molecular mechanisms underlying the neuroaffinity of pancreatic tumors are not completely understood. In this study, we developed a novel method to monitor ex vivo perineural invasion into surgically resected rat vagal nerves by different human pancreatic tumor cell lines. Genome-wide transcriptional analyses were employed to identify the consensus set of genes differentially regulated in all highly nerve-invasive (nerve invasion passage 3) versus less invasive (nerve invasion passage 0) pancreatic tumor cells. The critical involvement of kinesin family member 14 (KIF14) and Rho-GDP dissociation inhibitor beta (ARHGDIbeta) in perineural invasion was confirmed on RNA and protein levels in human pancreatic tumor specimens. We found significant up-regulation of KIF14 and ARHGDIbeta mRNA levels in patients with pancreatic cancer, and both proteins were differentially expressed in tumor cells invading the perineural niche of pancreatic cancer patients as detected by immunohistochemistry. Moreover, functional knockdown of KIF14 and ARHGDIbeta using small interfering RNA resulted in altered basal and/or perineural invasion of pancreatic tumor cells. Our work provides novel insights into the molecular determinants of perineural invasion in pancreatic cancer. The established nerve invasion model and the consensus signature of perineural invasion could be instrumental in the identification of novel therapeutic targets of pancreatic cancer as exemplified by KIF14 and ARHGDIbeta.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Sci-hub)

公众号