Review
Biochemistry & Molecular Biology
Amanda de Oliveira Lopes, Pedro do Nascimento Marinho, Leticia d'Ambrosio de Souza Medeiros, Vanessa Salete de Paula
Summary: Kaposi's sarcoma-associated herpesvirus (KSHV) is a virus containing oncogenes and proteins that play a crucial role in regulating cellular functions and leading to Kaposi's sarcoma. Some of these genes have the potential to be therapeutic targets for Kaposi's sarcoma.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Microbiology
Brian F. Niemeyer, Bridget Sanford, Joy E. Gibson, Jennifer N. Berger, Lauren M. Oko, Eva Medina, Eric T. Clambey, Linda F. van Dyk
Summary: Research has shown that the viral cyclin plays a critical role in promoting the transition of gammaherpesviruses from latency to active infection by affecting the frequency of LANA gene expression. Disruption of the viral cyclin significantly reduces the expression frequency of the LANA gene, without affecting the distribution of infected cells, but is crucial for reactivation.
Article
Virology
Yuan Fang, Wenli Li, Ying Zhang, Chang Zhou, Huanwu Wu, Yiting Zhang, Tao Dai, Jinzhi Wang, Lei Wang, Tongqing Chen, Yulin Zhu, Linding Wang
Summary: The seroprevalence of Kaposi's sarcoma-associated herpesvirus (KSHV) is high in Gansu, China, especially among certain ethnic groups and syphilis patients.
JOURNAL OF MEDICAL VIROLOGY
(2022)
Article
Multidisciplinary Sciences
Amanda de Oliveira Lopes, Natalia Spitz, Christian Robson de Souza Reis, Vanessa Salete de Paula
Summary: Genetic analysis based on ORF-K1 sequences revealed that HHV-8 genotypes A and C are widely distributed in Africa and Europe, with genotype B being predominant in Africa. Rare genotypes D and E were found in East Asia and Oceania/South America, respectively, while genotype F was prevalent in Africa. Brazil in the American continent exhibited the highest genotypic diversity with five HHV-8 genotypes present. This study provides an updated global distribution of HHV-8 genotypes for future epidemiological and evolutionary research.
SCIENTIFIC REPORTS
(2021)
Review
Virology
Lindsey Barrett, Lu Dai, Shanzhi Wang, Zhiqiang Qin
Summary: This article summarizes how KSHV utilizes extracellular vesicles (EVs) to create favorable environments for viral spread and persistence while evading immune responses. EVs play a significant role in the development and function of the immune system.
JOURNAL OF MEDICAL VIROLOGY
(2021)
Article
Multidisciplinary Sciences
Qian Chen, Jiangtao Chen, Yuqing Li, Dawei Liu, Yan Zeng, Zheng Tian, Akbar Yunus, Yong Yang, Jie Lu, Xinghua Song, Yan Yuan
Summary: The prevalence of KSHV infection is significantly elevated in Uyghur osteosarcoma patients, with the virus being associated with some osteosarcomas. The study suggests that KSHV infection is a risk factor for osteosarcoma, representing a newly identified viral-associated endemic cancer.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Review
Oncology
Sophie Grabar, Dominique Costagliola
Summary: An air mattress is a non-breathable sleeping aid commonly used for camping or guests' accommodation.
Article
Microbiology
Yuki Iwaisako, Tadashi Watanabe, Mizuki Hanajiri, Yuichi Sekine, Masahiro Fujimuro
Summary: The KSHV ORF7 plays a key role in viral replication by regulating capsid formation, maintaining viral production, and promoting lytic replication through interactions with other terminase components.
Review
Biochemistry & Molecular Biology
Kwun Wah Wen, Linlin Wang, Joshua R. Menke, Blossom Damania
Summary: EBV and KSHV, both human gammaherpesviruses with oncogenic properties, are associated with various lymphoproliferative diseases and plasmacytic/plasmablastic neoplasms. These viruses can also infect epithelial cells and cause carcinomas. The pathogenesis of these two viruses is closely linked to the expression of viral proteins.
Article
Virology
Lauren A. Gay, Daniel Stribling, Peter C. Turner, Rolf Renne
Summary: The study sheds light on the roles of individual miRNAs in KSHV-induced oncogenesis in endothelial cells. Different miRNAs have varying effects on cellular phenotypes, and new miRNA targets in specific pathways can be functionally validated through ribonomics data.
JOURNAL OF VIROLOGY
(2021)
Article
Microbiology
Tate Tabtieng, Rachel C. Lent, Machika Kaku, Alvaro Monago Sanchez, Marta Maria Gaglia
Summary: Type I interferons play a crucial role in infectious and inflammatory diseases. Viruses have developed strategies to suppress the production of type I interferons, and apoptotic caspases have emerged as important regulators of type I interferon signaling. This study reveals that caspase activity inhibits the DNA sensor cGAS during KSHV infection, blocking the antiviral type I interferon response. These findings provide insights into the mechanisms of viral immune evasion and can inform targeted therapeutic strategies for viral infections.
Article
Multidisciplinary Sciences
Grant Broussard, Guoxin Ni, Zhigang Zhang, Qian Li, Patricio Cano, Dirk P. Dittmer, Blossom Damania
Summary: This study reveals that the barrier-to-autointegration factor 1 (BAF) is necessary for the reactivation of Kaposi sarcoma-associated herpesvirus (KSHV) and Epstein-Barr virus (EBV) by suppressing the cGAS-STING signaling pathway. BAF destabilizes cGAS expression, leading to increased antiviral responses and decreased viral replication. BAF could be a potential target for treating viral infections and malignancies.
NATURE COMMUNICATIONS
(2023)
Article
Biochemistry & Molecular Biology
Yujun Liu, Yuan-Chuan Chen, Bin Yan, Fenyong Liu
Summary: In this study, ribozymes derived from RNase P catalytic RNA were engineered to target the mRNA encoding KSHV RTA. The functional ribozyme F-RTA efficiently sliced the RTA mRNA and suppressed KSHV production and gene expression. This study demonstrates the potential of RNase P ribozymes as a therapy against KSHV.
Article
Virology
Sarah A. Clark, Angie Vazquez, Kelsey Furiya, Madeleine K. Splattstoesser, Abdullah K. Bashmail, Haleigh Schwartz, Makaiya Russell, Shun Je Bhark, Osvaldo K. Moreno, Morgan McGovern, Eric R. Owsley, Timothy A. Nelson, Erica L. Sanchez, Tracie Delgado
Summary: Viruses are intracellular parasites that require host cell metabolic machinery to replicate. Using murine herpesvirus 68 (MHV-68) as a model, the metabolic changes during MHV-68 infection and replication were studied. Oncogenic virus infections, including Epstein-Barr virus (EBV) and Kaposi's sarcoma herpesvirus (KSHV), are estimated to cause 15% of all cancers. Our study found that MHV-68 infection induces glycolysis, glutaminolysis, lipid metabolism, and nucleotide metabolism. Inhibition of glucose or lipid metabolism resulted in decreased virus production. Targeting host cell metabolism can be used to treat gammaherpesvirus-induced cancers and infections in humans.
JOURNAL OF VIROLOGY
(2023)
Article
Infectious Diseases
Jinchuan Shi, Gaoxiang Ying, Zhongdong Zhang
Summary: In the treatment of AIDS patients with Kaposi's sarcoma, the reconstitution of immune function and consecutive chemotherapy with doxorubicin liposome are crucial. Early recognition and histopathological verification of general symptoms such as thrombocytopenia and hemorrhagic purple papules in AIDS patients are necessary to achieve early diagnosis of KS and timely clinical intervention.
INFECTION AND DRUG RESISTANCE
(2023)
Article
Oncology
Antonia M. Stehr, Guangxia Wang, Richard Demmler, Marc P. Stemmler, Julia Krug, Philipp Tripal, Benjamin Schmid, Carol Geppert, Arndt Hartmann, Luis E. Munoz, Janina Schoen, Simon Voelkl, Susanne Merkel, Christoph Becker, Georg Schett, Robert Gruetzmann, Elisabeth Naschberger, Martin Herrmann, Michael Stuerzl
Summary: Neutrophil extracellular traps (NETs), released by neutrophils, have been found in colorectal cancer (CRC) tissues and are associated with disease progression. This study used high-resolution microscopy to detect citrullinated NETs in colon cancer tissues and found that citrullinated NETs were significantly associated with high tumour grades and lymph node metastasis. In vitro experiments also showed that purified NETs induced filopodia formation and cell motility in CRC cell lines, indicating their potential contribution to CRC metastasis.
JOURNAL OF PATHOLOGY
(2022)
Article
Virology
Enrico Caragliano, Wolfram Brune, Jens B. Bosse
Summary: Recent research has shown that many RNA viruses form cytoplasmic biomolecular condensates through liquid-liquid phase separation to facilitate replication. However, there is contradictory data on whether herpesviruses form nuclear condensates. This article reviews the current literature and provides comments on nuclear condensate formation by herpesviruses.
Article
Gastroenterology & Hepatology
Reyes Gamez-Belmonte, Mousumi Mahapatro, Lena Erkert, Miguel Gonzalez-Acera, Elisabeth Naschberger, Yuqiang Yu, Mireia Tena-Garitaonaindia, Jay Patankar, Yara Wagner, Eva Podstawa, Lena Schoedel, Marvin Bubeck, Markus F. Neurath, Michael Stuerzl, Christoph Becker
Summary: Psen1 drives tumour development by increasing EGFR signalling via NOTCH1 processing, and by activating the COX-2-PGE(2) pathway. PSEN1 inhibition could be a useful strategy in treatment of CRC.
Article
Dermatology
Vijayanand Rajendran, Pushkar Ramesh, Ruoxuan Dai, Shruthi Kalgudde Gopal, Haifeng Ye, Hans-Gunther Machens, Heiko Adler, Dongsheng Jiang, Yuval Rinkevich
Summary: Deep skin wounds heal by mobilizing cells and extracellular matrix from the fascia, but the biochemistry and therapeutic means to modulate scar formation are not well understood. This study identifies p120 as a key mediator of fascia mobilization and wound repair. Gene silencing of p120 disrupts the supracellular organization of fascia fibroblasts, reducing cell and matrix transfer into wounds and enhancing wound healing. These findings suggest p120 as a potential therapeutic target for the treatment of skin scar conditions.
JOURNAL OF INVESTIGATIVE DERMATOLOGY
(2023)
Review
Biochemistry & Molecular Biology
Jeeshan Singh, Michael Boettcher, Maximilian Doelling, Annika Heuer, Bettina Hohberger, Moritz Leppkes, Elisabeth Naschberger, Mirco Schapher, Christine Schauer, Janina Schoen, Michael Stuerzl, Ljubomir Vitkov, Han Wang, Leticija Zlatar, Georg A. Schett, David S. Pisetsky, Ming-Lin Liu, Martin Herrmann, Jasmin Knopf
Summary: Extracellular chromatin, particularly in the form of NETs, plays a crucial role in the progression of various diseases. It functions as a driver of the interferon system, autoantigen, and scaffold for innate immune system proteins. Insufficient clearance of extruded chromatin can contribute to immune-inflammatory and occlusive disorders. This article discusses the cellular events involved in extracellular chromatin release and NET formation, the negative consequences of dysregulated NET formation, and the imbalance between NET formation and clearance. It also explores the role of NET formation in various diseases and injuries, highlighting the importance of targeting chromatin decondensation pathways and promoting extracellular chromatin clearance for effective therapies.
CELL DEATH AND DIFFERENTIATION
(2023)
Article
Biochemistry & Molecular Biology
Han Wang, Antonia Margarethe Stehr, Jeeshan Singh, Leticija Zlatar, Arndt Hartmann, Katja Evert, Elisabeth Naschberger, Saskia von Stillfried, Peter Boor, Luis E. E. Munoz, Jasmin Knopf, Michael Stuerzl, Martin Herrmann
Summary: During inflammatory responses, neutrophils utilize various defense mechanisms, such as phagocytosis, degranulation, recruitment of immune cells, secretion of anti-microbials, and release of neutrophil extracellular traps (NETs). Detection of NETs in tissue sections can be challenging due to the high fluorescence signals emitted from condensed nuclear DNA. However, using anti-DNA-IgM antibodies can effectively detect the extended DNA patches of NETs, providing a new perspective for studying neutrophil-associated immune reactions in diseases.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Review
Biochemistry & Molecular Biology
Nathalie Britzen-Laurent, Carl Weidinger, Michael Stuerzl
Summary: Inflammatory bowel diseases (IBDs) are chronic inflammatory disorders with a complex etiology that are often difficult to treat. In IBD, inflammation of the intestinal mucosa is characterized by strong and sustained leukocyte infiltration, leading to barrier dysfunction and tissue destruction. The role of the gut vasculature in promoting inflammation is increasingly recognized.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Gastroenterology & Hepatology
Lisa Lou Schulze, Emily Becker, Mark Dedden, Li-Juan Liu, Chiara van Passen, Mariam Mohamed-Abdou, Tanja M. Mueller, Maximilian Wiendl, Karen A-M Ullrich, Imke Atreya, Moritz Leppkes, Arif B. Ekici, Philipp Kirchner, Michael Stuerzl, Dan Sexton, Deborah Palliser, Raja Atreya, Britta Siegmund, Markus F. Neurath, Sebastian Zundler
Summary: This study investigated the mechanisms of action of ontamalimab and vedolizumab antibodies and found that ontamalimab has broader mechanisms of action compared to vedolizumab, but its effects are compensated for by redundant cell trafficking circuits, leading to similar preclinical efficacy of both antibodies.
JOURNAL OF CROHNS & COLITIS
(2023)
Article
Virology
Xuan Zhou, Giorgia Cimato, Yihua Zhou, Giada Frascaroli, Wolfram Brune
Summary: Viruses can induce the fusion of infected and neighboring cells, leading to the formation of syncytia. Cell-cell fusion is mediated by viral fusion proteins on the plasma membrane of infected cells that interact with cellular receptors on neighboring cells. The role of syncytium formation in viral dissemination and pathogenicity remains poorly understood.
Article
Cell Biology
Alan Benard, Anke Mittelstaedt, Bettina Kloesch, Karolina Glanz, Jan Mueller, Janina Schoen, Bjorn Nuese, Maximilian Brunner, Elisabeth Naschberger, Michael Stuerzl, Jochen Mattner, Luis E. Munoz, Kai Sohn, Robert Gruetzmann, Georg F. Weber
Summary: Inflammatory bowel diseases (IBDs) have an unclear etiology despite intensive investigation into their pathogenesis. This study found that IL-3-deficient mice are more susceptible to and exhibit increased intestinal inflammation during the early stage of experimental colitis. IL-3 promotes the early recruitment of microbicidal neutrophils into the colon and is expressed locally by cells with a mesenchymal stem cell phenotype. The recruitment of neutrophils involves specific T cell subsets, STAT5, and chemokines, and is sustained by extramedullary splenic hematopoiesis. Interestingly, IL-3-deficient mice showed increased resistance to acute colitis and reduced intestinal inflammation.
Article
Microbiology
Jens B. Bosse, Wolfram Brune
Article
Pharmacology & Pharmacy
Tianyu Zhang, Theodore I. Potgieter, Erik Kosche, Jessica Rueckert, Eleonore Ostermann, Thomas Schulz, Martin Empting, Wolfram Brune
Summary: Human cytomegalovirus (HCMV, human herpesvirus 5) is a pathogen that causes serious disease in immunocompromised patients. The viral alkaline nuclease (AN) is identified as a potential drug target for anti-HCMV therapy. Researchers have discovered a thioxothiazolo[3,4-a]quinazoline derivative compound that inhibits AN activity and HCMV replication in vitro. The compound also shows activity against drug-resistant HCMVs and other herpesviruses.
ANTIVIRAL RESEARCH
(2023)
Article
Biotechnology & Applied Microbiology
Beatrix Steer, Barbara Adler, Heiko Adler
Summary: The function of MHV-68-specific ORFs M12 and M13 have been investigated through construction and analysis of recombinant MHV-68 with mutations. It was found that M12 and M13 genes play an important role during latency in vivo.
JOURNAL OF GENERAL VIROLOGY
(2023)
Article
Cell Biology
Elisabeth Naschberger, Christian Flierl, Jinghao Huang, Lena Erkert, Reyes Gamez-Belmonte, Miguel Gonzalez-Acera, Magdalena Bober, Martin Mehnert, Christoph Becker, Vera S. Schellerer, Nathalie Britzen-Laurent, Michael Stuerzl
Summary: The development of inflammatory bowel diseases (IBD) involves the breakdown of two barriers: the epithelial barrier and the gut-vascular barrier (GVB). Interferon (IFN)-? is a major pathogenesis factor in IBD and can impair both barriers. Secreted factors from the GVB and their impact on communication between the barriers in IBD are discussed.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2023)
Article
Plant Sciences
Theresa Maria Reimann, Christina Muedsam, Christina Schachtler, Semra Ince, Heinrich Sticht, Christian Herrmann, Michael Stuerzl, Benedikt Kost
Summary: In this study, the Arabidopsis GBP orthologue AtGBPL3 was identified as a crucial component in mitotic nuclear envelope reformation, nuclear morphogenesis, and transcriptional repression during interphase. AtGBPL3 preferentially accumulates at the nuclear envelope in mitotically active root tips and interacts with centromeric chromatin and lamina components, leading to transcriptional repression of pericentromeric chromatin. Reduced expression of AtGBPL3 or associated lamina components results in altered nuclear morphology and overlapping transcriptional deregulation.