MedComm - Future medicine最新文献

筛选
英文 中文
Bibliometric and visual analysis of severe trauma literature in the past 20 years 过去 20 年严重创伤文献的文献计量和视觉分析
MedComm - Future medicine Pub Date : 2024-05-30 DOI: 10.1002/mef2.81
Panpan Chang, Rui Li, Zhongqing Wang, Wei Chong, Tianbing Wang
{"title":"Bibliometric and visual analysis of severe trauma literature in the past 20 years","authors":"Panpan Chang,&nbsp;Rui Li,&nbsp;Zhongqing Wang,&nbsp;Wei Chong,&nbsp;Tianbing Wang","doi":"10.1002/mef2.81","DOIUrl":"https://doi.org/10.1002/mef2.81","url":null,"abstract":"<p>Severe trauma is a critical aspect of medical practice, profoundly impacting patient care and outcomes. Over the past 20 years, advancements in trauma care concepts and the utilization of advanced technologies have led to substantial growth in severe trauma research, evidenced by a notable increase in research activity and subsequent publications. To understand the publication landscape in severe trauma, identify prevailing research trends, and highlight areas requiring further development for future insights, we conducted a bibliometric analysis. Our analysis indicates that there are 16,939 severe trauma-related publications from the past 20 years, with a continuous increase in publication volume, particularly showing a rapid growth trend from 2018 to 2021. The United States leads in both volume and citation frequency. Moreover, we synthesized data on productive countries/regions and research institutions, showcasing extensive collaboration across diverse geographic locations and institutional affiliations. Substantial progress has been achieved in severe trauma research, particularly in clinical diagnosis, treatment, epidemiology, prevention, and pathogenesis. However, there is still a gap in adopting cutting-edge interdisciplinary methodologies. This study provides a comprehensive overview of the current state of severe trauma research and suggests pathways for future advancement.</p>","PeriodicalId":74135,"journal":{"name":"MedComm - Future medicine","volume":"3 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mef2.81","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141187611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Discovering Alu element's role in the tale of tail loss: One giant leap for human evolution 发现阿鲁元素在 "掉尾巴 "故事中的作用人类进化的一大飞跃
MedComm - Future medicine Pub Date : 2024-05-27 DOI: 10.1002/mef2.86
Xiaoyan Liu, Min Wu, Yongye Huang
{"title":"Discovering Alu element's role in the tale of tail loss: One giant leap for human evolution","authors":"Xiaoyan Liu,&nbsp;Min Wu,&nbsp;Yongye Huang","doi":"10.1002/mef2.86","DOIUrl":"https://doi.org/10.1002/mef2.86","url":null,"abstract":"<p>In a recent article published in <i>Nature</i>, Xia et al. found that the insertion of a specific AluY element in the sixth intron of the primate TBXT gene may lead to the evolution of tail loss.<span><sup>1</sup></span> The significance of this study emphasizes that uncovering the genetic mechanism in facilitating tail-loss evolution in hominoids can contribute to understanding evolutionary pressure that boosts the formation of human traits and evolutionary diseases.</p><p>From a Darwinian evolutionary perspective, the lack of a tail is one of the key features in the evolution from hominids, signifying the anatomical shift from primitive ancestors to modern humans, especially the disappearance of the external tail.<span><sup>2</sup></span> This unique transformation not only illustrates a remarkable chapter in our biological history, but also underscores the intricate interplay of heredity and evolution. The story of the tail, or more precisely, its absence opens a window into how minor genetic alterations can orchestrate remarkable developmental changes. Alu elements are a type of short interspersed nuclear element (SINE) found abundantly in the human genome. Alu elements, as a class of transposable elements unique to the primate genome, exert a profound influence on genome evolution. These elements increase genomic instability by providing the most common homologous sequences for non-allelic homologous recombination events, which can lead to disease. Through delving deeper into the TBXT gene, Xia et al. revealed a human-specific insertion of an Alu element that is oriented in the opposite direction to the neighboring Alu element, forming a pair that may have led to human-specific gene splicing that affects gene expression. Validated by a mouse model, this splicing was found to alter TBXT gene expression, resulting in missing or shortened tails in mice,<span><sup>1</sup></span> providing strong support for the theory that exon skipping leads to tail deletion (Figure 1).</p><p>To investigate the genetic mechanism of ancient human-specific selective splicing events, Xia et al. used CRISPR-Cas9 to knock out the AluY element and its interaction with the AluSx1 element in human embryonic stem cells. By modeling the developmental expression pattern of the TBXT gene, Xia et al. revealed that the deletion of the AluY element almost completely blocked the <i>TBXT</i><sup><i>Δexon6</i></sup> heterodimeric transcripts production.<span><sup>3</sup></span> These findings highlight the complex role of transposable factor interactions in gene regulation and the importance of TBXT isoform expression in tail development.</p><p>The loss of the tail is a complex and widely debated topic in biological evolution, involving a delicate balance between evolution and degeneration. From an evolutionary perspective, the loss of the tail in humans and other upright walking organisms is considered to be an adaptive evolution to a new environment and way of life, in whic","PeriodicalId":74135,"journal":{"name":"MedComm - Future medicine","volume":"3 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mef2.86","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141156508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Current progress in chimeric antigen receptor T-cell therapy for malignant tumors 嵌合抗原受体 T 细胞疗法治疗恶性肿瘤的最新进展
MedComm - Future medicine Pub Date : 2024-05-13 DOI: 10.1002/mef2.79
Yashang Zheng, Jiaqian Huang, Yuhong Xu, Hui-Yan Luo
{"title":"Current progress in chimeric antigen receptor T-cell therapy for malignant tumors","authors":"Yashang Zheng,&nbsp;Jiaqian Huang,&nbsp;Yuhong Xu,&nbsp;Hui-Yan Luo","doi":"10.1002/mef2.79","DOIUrl":"https://doi.org/10.1002/mef2.79","url":null,"abstract":"<p>In the realm of malignant tumor treatment, particularly regarding hematologic malignancies, chimeric antigen receptor T-cell (CAR-T) immunotherapy has witnessed remarkable advancements in recent years. This approach involves genetically modifying and engineering a patient's T-cells ex vivo to express a specific CAR, known as CAR-T cells. When these modified cells are reintroduced into the patient, they can specifically recognize target antigens and exhibit highly efficient cytotoxicity against cells expressing these antigens, making them suitable for the treatment of malignant tumors. CD19, which is expressed on the surface of B lymphocytes at different stages of differentiation, has been identified as a suitable target for the treatment of most B-cell lymphomas. CAR-T cells targeting CD19 have demonstrated excellent specificity, cytotoxicity, and persistence in both in vitro and clinical trials, showing tremendous potential for application. However, identifying appropriate targets for CAR-T therapy in solid tumors remains a challenge, leading to limited advancements in this area. This review discusses the mechanisms, applications, limitations, and prospects of CAR-T therapy in hematologic malignancies and solid tumors, aiming to provide directions for future research in this field.</p>","PeriodicalId":74135,"journal":{"name":"MedComm - Future medicine","volume":"3 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mef2.79","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140914787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Understanding long COVID—The role of serotonin in cognitive impairment 了解长期 COVID--血清素在认知障碍中的作用
MedComm - Future medicine Pub Date : 2024-04-23 DOI: 10.1002/mef2.80
Shuvam Sarkar, Olivia Monteiro
{"title":"Understanding long COVID—The role of serotonin in cognitive impairment","authors":"Shuvam Sarkar,&nbsp;Olivia Monteiro","doi":"10.1002/mef2.80","DOIUrl":"https://doi.org/10.1002/mef2.80","url":null,"abstract":"<p>A recent study by Wong et al. was published in the journal “Cell” and illuminates a potential role for serotonin reduction in mediating cognitive impairment following postacute sequelae of COVID (PASC) or Long COVID.<span><sup>1</sup></span> This research highlight explores the mechanisms underlying viral infection-mediated serotonin reduction, and unveils therapeutic targets which could alter the way we approach Long COVID in clinical practice.</p><p>In the aftermath of the COVID-19 pandemic, patients are increasingly presenting with debilitating symptoms persisting for months after acute SARS-CoV-2 infection.<span><sup>2</sup></span> The constellation of symptoms, collectively termed Long COVID, are heterogeneous and involves multiple body systems. Despite the significant impact of Long COVID on healthcare resources and patients' quality of life, the mechanisms underlying these symptoms remain largely enigmatic. However, in a groundbreaking study, Wong et al. illuminate a potential link between viral-induced inflammation, serotonin reduction, and cognitive deficits in individuals suffering from Long COVID.<span><sup>1</sup></span></p><p>Wong et al. analysed a range of metabolites in the serum of patients exhibiting symptoms of both acute and post-acute COVID-19 infection, and found amino acid metabolites, such as serotonin were depleted throughout the acute and chronic phases of infection. Interestingly, patients with Long COVID had lower serotonin levels compared to those who fully recovered from their initial infection. Indeed, serotonin levels in the bloodstream were predictive of long-term symptom burden after initial COVID infection, and strongly suggests a potential role for serotonin in the pathophysiology of Long COVID. Similar reductions in serotonin levels were found in other infections such as varicella-zoster virus and lymphocytic choriomeningitis virus, suggesting that reduced serotonin may be a shared characteristic of systemic viral infections.</p><p>The study then turned to mouse models of viral infection to characterise the mechanisms underpinning serotonin reduction, and found increased type 1 interferon (IFN) signalling. Importantly, IFN signalling was persistently upregulated in long COVID, and inhibition of the IFN alpha receptor prevented viral infection-induced serotonin depletion. This effect was abolished in mice with impaired IFN signalling.</p><p>Serotonin is predominantly synthesized in the gastrointestinal tract, where it is produced from an essential dietary amino acid called tryptophan.<span><sup>3</sup></span> This study also found that individuals with acute and persistent COVID-19 infection had reduced plasma tryptophan levels, hinting at a potential limitation in serotonin production during viral infections. This suggests individuals with congenital or acquired tryptophan deficiency may be more susceptible to developing long COVID. RNA sequencing of small intestinal epithelium found that genes involved in a","PeriodicalId":74135,"journal":{"name":"MedComm - Future medicine","volume":"3 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mef2.80","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140633687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A biodegradable cardiac electrotherapy device paving the way for autonomous transient implants 为自主瞬时植入铺平道路的可生物降解心脏电疗装置
MedComm - Future medicine Pub Date : 2024-04-14 DOI: 10.1002/mef2.78
Mladen Veletić, Nureddin Ashammakhi
{"title":"A biodegradable cardiac electrotherapy device paving the way for autonomous transient implants","authors":"Mladen Veletić,&nbsp;Nureddin Ashammakhi","doi":"10.1002/mef2.78","DOIUrl":"https://doi.org/10.1002/mef2.78","url":null,"abstract":"<p>In a recent article published in <i>Science</i>, Choi et al. introduce an innovative approach to cardiac rhythm control through a newly developed, temporary, wireless, bioresorbable pacemaker.<span><sup>1</sup></span> This pacemaker operates in a closed-loop fashion, dynamically adjusting pacing parameters to match metabolic demands of the heart while ensuring mechanical robustness and compatibility with magnetic resonance imaging.</p><p>The system comprises three implantable, bioresorbable components, a pacemaker, an anti-inflammatory drug-eluting patch, and a power harvesting unit. Additionally, it includes three skin-interfaced components, a set of physiological sensors, a wireless power transfer module, and a haptic actuator. An external, handheld device with a software application is used for data-management and control (Figure 1).<span><sup>1</sup></span> After patient recovery, the skin-interfaced devices, including sensors are easily removed.</p><p>The motivation behind the use of biodegradable implantable sensors stems from the necessity to monitor and treat postoperative complications effectively. Such implants mitigate risks associated with nonbiodegradable alternatives, including bacterial colonization and infection, as well as the challenges associated with their removal, particularly in sensitive areas. Clinical trials will determine the accuracy of pacing and electrocardiogram (ECG) recordings with skin-interfaced sensors. It also remains to be found whether combinatorial sensor-actuator transient implants with biodegradable sensors will be more accurate since implantable sensors may provide more accurate data compared to skin-interfaced sensors.</p><p>Biodegradable sensors also offer opportunities for minimally invasive and temporary monitoring and therapeutic interventions, enabling real-time tracking of physiological parameters and targeted delivery of therapeutic agents or electrical stimulation to specific areas of the body.<span><sup>2</sup></span> Unlike skin-interfaced sensors, implantable biodegradable sensors do not need to withstand the movements of the body, and they minimally infringe on them. They are also less cumbersome, and they are comfortable for patients.</p><p>Although it is advantageous to have implants that can degrade and disappear, their degradation can lead to a inflammatory reaction. Uncontrolled, it becomes chronic and leads to fibrous tissue encapsulation of the implant and sensor and hindrance of their function. Therefore, the fibro-inflammatory reaction needs to be properly kept under control. Choi et al.<span><sup>1</sup></span> used an anti-inflammatory steroid (dexamethasone acetate)-eluting patch. Alternative strategies that may be considered in the future are using anti-inflammatory drug release, implant coating, micro- and nanopatterning, and surface functionalization, which may simplify the implant design. Because the use of stiff materials leads to the activation of integrin and the release","PeriodicalId":74135,"journal":{"name":"MedComm - Future medicine","volume":"3 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mef2.78","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140552956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
PO-AKID-teller: An interpretable machine learning tool for predicting acute kidney injury requiring dialysis after acute type A aortic dissection surgery PO-AKID-teller:用于预测急性 A 型主动脉夹层手术后需要透析的急性肾损伤的可解释机器学习工具
MedComm - Future medicine Pub Date : 2024-03-26 DOI: 10.1002/mef2.77
Qiuying Chen, Biao Fu, Jue Yang, Zhe Jin, Lu Zhang, Ruixin Fan, Bin Zhang, Shuixing Zhang
{"title":"PO-AKID-teller: An interpretable machine learning tool for predicting acute kidney injury requiring dialysis after acute type A aortic dissection surgery","authors":"Qiuying Chen,&nbsp;Biao Fu,&nbsp;Jue Yang,&nbsp;Zhe Jin,&nbsp;Lu Zhang,&nbsp;Ruixin Fan,&nbsp;Bin Zhang,&nbsp;Shuixing Zhang","doi":"10.1002/mef2.77","DOIUrl":"https://doi.org/10.1002/mef2.77","url":null,"abstract":"<p>Postoperative acute kidney injury requiring dialysis (PO-AKID) is a serious adverse event that not only affects acute morbidity and mortality, but also long-term prognosis. Here, we developed a practical and explainable web-based calculator (PO-AKID-teller) to detect patients who might experience PO-AKID after acute type A aortic dissection (ATAAD) surgery. This retrospective study reviewed 549 patients undergoing ATAAD surgery from October 2016 to June 2021. PO-AKID frequency was 19.7% (108 of 549 patients). The initial dataset was split into an 80% training cohort (<i>n</i> = 439) and a 20% test cohort (<i>n</i> = 110). There were seven predictors that could indicate PO-AKID, including prior cardiovascular surgery, platelet, serum creatinine, the terminal site of dissection involvement, right coronary artery involvement, estimated blood loss, and urine output. Among six machine learning classifiers, the random forest model exhibited the best predictive performance, with an area under the curve of 0.863 in the training cohort and 0.763 in the test cohort. This model was translated into a web-based risk calculator PO-AKID-teller to estimate an individual's probability of PO-AKID. The PO-AKID-teller can accurately estimate an individual's risk for PO-AKID in an interpretable manner, which may aid in informed decision-making, patient counseling, perioperative optimization, and longer-term care provision.</p>","PeriodicalId":74135,"journal":{"name":"MedComm - Future medicine","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mef2.77","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140291397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Advancing systemic disease diagnosis through ophthalmic image-based artificial intelligence 通过眼科图像人工智能推进系统性疾病诊断
MedComm - Future medicine Pub Date : 2024-03-13 DOI: 10.1002/mef2.75
Hanpei Miao, Zixing Zou, Jie Xu, Yuanxu Gao
{"title":"Advancing systemic disease diagnosis through ophthalmic image-based artificial intelligence","authors":"Hanpei Miao,&nbsp;Zixing Zou,&nbsp;Jie Xu,&nbsp;Yuanxu Gao","doi":"10.1002/mef2.75","DOIUrl":"https://doi.org/10.1002/mef2.75","url":null,"abstract":"<p>The eye serves as a unique window into systemic health, offering clinicians a valuable opportunity for early detection and targeted treatment. Against this backdrop, advancements in artificial intelligence (AI) and ophthalmic imaging are converging to pave the way for more precise and predictive diagnostics. This review aims to elucidate the transformative role of AI in utilizing ophthalmic imaging for the detection and prediction of systemic diseases. We begin by introducing the advantages of the eye as a valuable tool for detecting systemic diseases. We also provide an overview of various ophthalmic imaging techniques that have proven useful in predicting systemic ailments. Then, we summarize two research patterns for analyzing ocular data, followed by the introduction of current AI applications using ophthalmic images that significantly increase diagnostic precision. Despite the promise, challenges such as data heterogeneity and model interpretability persist, which are also covered in this review. We conclude by discussing future directions and the immense potential these AI-enabled approaches hold for revolutionizing healthcare. As AI technologies advance, their potential integration with ophthalmic imaging offers promising avenues for improving the diagnosis, prediction, and management of various systemic diseases, thereby contributing to the evolving landscape of integrated healthcare.</p>","PeriodicalId":74135,"journal":{"name":"MedComm - Future medicine","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mef2.75","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140114201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Innate immunity in diabetic nephropathy: Pathogenic mechanisms and therapeutic targets 糖尿病肾病中的先天免疫:致病机制和治疗目标
MedComm - Future medicine Pub Date : 2024-03-07 DOI: 10.1002/mef2.76
Le-Xin Chen, Shu-Ru Lu, Zhi-Hao Wu, En-Xin Zhang, Qing-Qun Cai, Xiao-Jun Zhang
{"title":"Innate immunity in diabetic nephropathy: Pathogenic mechanisms and therapeutic targets","authors":"Le-Xin Chen,&nbsp;Shu-Ru Lu,&nbsp;Zhi-Hao Wu,&nbsp;En-Xin Zhang,&nbsp;Qing-Qun Cai,&nbsp;Xiao-Jun Zhang","doi":"10.1002/mef2.76","DOIUrl":"https://doi.org/10.1002/mef2.76","url":null,"abstract":"<p>Diabetic nephropathy (DN) represents a prevalent chronic microvascular complication of diabetes mellitus (DM) and is a major cause of end-stage renal disease. The anfractuous surrounding of DN pathogenesis and the intricate nature of this metabolic disorder often pose challenges in both the diagnosis and treatment of DN compared to other kidney diseases. Hyperglycaemia in DM predispose vulnerable renal cells into microenvironmental disequilibrium and thereby results in innate immunocytes infiltration including neutrophils, macrophages, myeloid-derived suppressor cells, dendritic cells, and so forth. These immune cells play dual roles in kidney injury and closely correlated with the degree of proteinuria in DN patients. Additionally, innate immune signaling cascades, initiated by altered metabolic and hemodynamic in diabetic context, are crucial in instigating and perpetuating renal inflammation, which detrimentally contribute to DN pathogenesis. As such, anti-inflammatory therapies, particularly those targeting innate immunity, hold renoprotective promise in DN. In this article, we reviewed the origin and feature of the above four prominent kidney innate immune cells, analyze their pathogenic role in DN, and discuss potential targeted-therapeutic strategies, aiming to enhance the current understanding of renal innate immunity and hence help to discover promising therapeutic approaches for DN.</p>","PeriodicalId":74135,"journal":{"name":"MedComm - Future medicine","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mef2.76","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140053247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Acetyl-methyllysine: A new posttranslational modification used to mark chromatin 乙酰甲基赖氨酸:用于标记染色质的一种新的翻译后修饰
MedComm - Future medicine Pub Date : 2024-02-23 DOI: 10.1002/mef2.74
Hua Guo, Fangfang Zhou, Long Zhang
{"title":"Acetyl-methyllysine: A new posttranslational modification used to mark chromatin","authors":"Hua Guo,&nbsp;Fangfang Zhou,&nbsp;Long Zhang","doi":"10.1002/mef2.74","DOIUrl":"https://doi.org/10.1002/mef2.74","url":null,"abstract":"<p>A recent study, conducted by Lu-Culligan et al., published in <i>Nature</i>, proposed <i>N<sup>ε</sup></i>-acetyl-<i>N<sup>ε</sup></i> -methyllysine (Kacme) that both methylation and acetylation occur on the same side chain of lysine as a cellular posttranslational modification (PTM) on histone H4.<span><sup>1</sup></span> Kacme can be recognized and bound by the chromatin protein bromodomain-containing 2 (BRD2), associating with active chromatin marks and enhanced transcriptional initiation. This discovery offers a novel avenue for investigation of chromatin biology (Figure 1).</p><p>Histones play a crucial role in regulating gene expression and chromatin structure through PTMs such as acetylation (Kac) and methylation (Kme), impacting transcriptional activity. Acetylation neutralizes histone's positive charge, weakening the DNA–histone interaction for easier binding with transcription factors. Unlike acetylation, methylation affects reader protein binding and leads to changes in chromatin structure, resulting in transcription suppression or activation.<span><sup>2</sup></span> Although it is commonly believed that acetylation and monomethylation are mutually exclusive modifications on a single residue, chemical principles permit a lysine residue to be stably acetylated and monomethylated to create a tertiary amide, Kacme.</p><p>To provide evidence for the existence of Kacme in cellular proteins, researchers synthesized Fmoc–Lys (Ac, Me)-OH as a building block to create a central Kacme residue peptide library and used them as an antigen to generate a specific antiserum against Kacme.<span><sup>1</sup></span> Kacme antisera demonstrated high specificity toward Kacme peptides but not otherwise identical Kac, Kme1, and propionyllysine (Kpr). By utilizing this antiserum, researchers analyzed intracellular Kacme modifications in fruit fly, mouse, and human cell lines and identified histone H4 Lys5 and Lys12 as Kacme-modified sites in human cells. To confirm Kacme modification through an antisera-independent approach, the authors isotopically labeled the synthetic H4K5acme peptide to obtain distinct ion diagnostic peaks before conducting intracellular proteomic analysis, which further supported the presence of Kacme in histones.</p><p>Chromatin immunoprecipitation sequencing (ChIP-seq) is an extremely powerful tool for studying interactions between multiple transcription factors and other chromatin-associated proteins and DNA.<span><sup>3</sup></span> By performing ChIP-seq with Kacme antisera in fruit flies and human cells, the authors found that Kacme was significantly enriched around gene promoters, especially in highly expressed genes, and its localization was strongly associated with active chromatin modifications. Subsequently, Lu-Culligan et al. conducted transient-transcriptome time-lapse sequencing to examine transcriptional activity, and start-time-lapse sequencing to investigate the kinetics of promoter–proximal pausing,<span><sup>1</sup","PeriodicalId":74135,"journal":{"name":"MedComm - Future medicine","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mef2.74","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139942923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Computed tomography-based artificial intelligence in lung disease—Chronic obstructive pulmonary disease 基于计算机断层扫描的肺病人工智能--慢性阻塞性肺病
MedComm - Future medicine Pub Date : 2024-02-18 DOI: 10.1002/mef2.73
Fangfei Wang, Sixiang Li, Yuanxu Gao, Shiyue Li
{"title":"Computed tomography-based artificial intelligence in lung disease—Chronic obstructive pulmonary disease","authors":"Fangfei Wang,&nbsp;Sixiang Li,&nbsp;Yuanxu Gao,&nbsp;Shiyue Li","doi":"10.1002/mef2.73","DOIUrl":"https://doi.org/10.1002/mef2.73","url":null,"abstract":"<p>Chronic obstructive pulmonary disease (COPD) stands as a global health crisis, responsible for substantial morbidity and mortality on a worldwide scale. Its insidious nature underscores the importance of early detection and accurate diagnosis. While spirometry has been the cornerstone for COPD diagnosis, the role of computed tomography (CT) imaging has evolved, offering a valuable avenue for early detection and subtype classification. Recently, the advent of artificial intelligence (AI) has brought forth the potential to revolutionize the accuracy and efficiency of COPD diagnosis, with a specific focus on CT images. This intersection of healthcare and technology signifies a paradigm shift in the way we approach COPD management. The transformative capacity of AI positions it as a vital instrument for early detection and precise subtype classification of COPD. Moreover, the synergistic relationship between medical imaging and AI paves the way for more precise and efficient disease management. Therefore, in this perspective, we tend to offer a comprehensive exploration of the latest breakthroughs in the field of CT-based AI in COPD diagnosis, aiming to demonstrate the promise and potential of AI in refining the accuracy of COPD classification and to illuminate the evolving landscape of AI's impact on COPD management.</p>","PeriodicalId":74135,"journal":{"name":"MedComm - Future medicine","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mef2.73","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139901662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信