Article
Multidisciplinary Sciences
Xiaojie Yu, Christian M. Orr, H. T. Claude Chan, Sonya James, Christine A. Penfold, Jinny Kim, Tatyana Inzhelevskaya, C. Ian Mockridge, Kerry L. Cox, Jonathan W. Essex, Ivo Tews, Martin J. Glennie, Mark S. Cragg
Summary: Low affinity of immunomodulatory antibodies leads to greater activity through increased clustering, resulting in higher immune cell activation, T cell expansion, and antitumor activity. This discovery reveals a new mechanism for enhancing receptor activation across diverse receptor families and sheds light on the mechanism of antibody-mediated receptor signaling. Affinity engineering offers a rational, efficient, and tunable solution for delivering antibody-mediated receptor activity for the treatment of human disease.
Article
Veterinary Sciences
Artur Summerfield, Heidi Gerber, Rebeka Schmitt, Matthias Liniger, Santina Grazioli, Emiliana Brocchi
Summary: This study demonstrates that monoclonal antibodies targeting FMDV O and A serotypes are able to opsonize the virus and induce cell death. Opsonization shows broader reactivity within the serotype and correlates better with vaccine dose compared to neutralization. Neutralization and opsonization titers are similarly predictive of protection.
FRONTIERS IN VETERINARY SCIENCE
(2022)
Article
Immunology
H. A. Daniel Lagasse, Louis B. Hopkins, Wojciech Jankowski, Marc G. Jacquemin, Zuben E. Sauna, Basil Golding
Summary: The most challenging complication associated with Factor VIII (FVIII) replacement therapy is the development of neutralizing anti-drug antibodies, which occur in a significant percentage of severe hemophilia A patients. Strategies to prevent or tolerize individuals with these antibodies are crucial, with immune tolerance induction (ITI) therapy being the only clinically proven method. Research suggests that Factor VIII Fc-fusion (rFVIIIFc) may be more effective in managing patients with anti-FVIII inhibitors compared to other FVIII products.
FRONTIERS IN IMMUNOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Yannic C. Bartsch, Deniz Cizmeci, Jaewon Kang, Tomer Zohar, Sivakumar Periasamy, Nickita Mehta, Jeroen Tolboom, Leslie Van der Fits, Jerry Sadoff, Christy Comeaux, Benoit Callendret, Alexander Bukreyev, Douglas A. Lauffenburger, Arangassery Rosemary Bastian, Galit Alter
Summary: RSV infection is a major cause of severe respiratory tract infection and death in infants and the elderly. This study found that protection against RSV infection is linked to opsonophagocytic functions driven by IgA and differentially glycosylated RSV-specific IgG profiles, indicating the importance of functional humoral immune response in preventing RSV.
Article
Virology
Ahmed M. Khalil, Michael S. Piepenbrink, Ian Markham, Madhubanti Basu, Luis Martinez-Sobrido, James J. Kobie
Summary: IBV contributes significantly to morbidity and mortality, particularly in children, necessitating improvements in vaccines and treatments. A specific hMAb, 1092D4, has been found to have minimal dependence on Fc-effector functions for in vivo antiviral activity.
Article
Multidisciplinary Sciences
Benoit Gamain, Carine Brousse, Nathan E. Rainey, Bere K. Diallo, Clara-Eva Paquereau, Alexandra Desrames, Jolita Ceputyte, Jean-Philippe Semblat, Olivier Bertrand, Stephane Gangnard, Jean-Luc Teillaud, Arnaud Chene
Summary: This study proposes a novel immunotherapeutic approach to redirect preexisting antibodies against EBV to target cells, which shows promising results in improving survival and achieving complete cancer remission in animal models.
Article
Multidisciplinary Sciences
Ramakrishnan Natesan, Neeraj J. Agrawal
Summary: In this study, long molecular simulations were used to investigate the interactions between Fab1, Fab2, and the Fc region in a human IgG1 crystal structure. The results revealed the importance of these interactions in determining the conformation and dynamics of the antibody. Specifically, the Fab2 arm was found to be non-covalently bound to the Fc region through long-lived hydrogen bonds, resulting in stable conformer states and influencing the dynamics of Fab1.
SCIENTIFIC REPORTS
(2022)
Article
Oncology
Khiyam Hussain, Rena Liu, Rosanna C. G. Smith, Kri T. J. Muller, Mohammadmersad Ghorbani, Sofia Macari, Kirstie L. S. Cleary, Robert J. Oldham, Russell B. Foxall, Sonya James, Steven G. Booth, Tom Murray, Lekh N. Dahal, Chantal E. Hargreaves, Robert S. Kemp, Jemma Longley, James Douglas, Hannah Markham, Serena J. Chee, Richard J. Stopforth, Ali Roghanian, Matthew J. Carter, Christian H. Ottensmeier, Bjorn Frendeus, Ramsey Cutress, Ruth R. French, Martin J. Glennie, Jonathan C. Strefford, Stephen M. Thirdborough, Stephen A. Beers, Mark S. Cragg
Summary: Hypoxia in the tumor microenvironment can upregulate the expression of Fc gamma RIIb receptors on tumor-associated macrophages (TAMs), which leads to reduced antibody dependent cellular phagocytosis (ADCP) and decreased efficacy of monoclonal antibody (mAb) immunotherapy. This finding provides a mechanistic basis for targeting Fc gamma RIIb expression or blocking it as a promising strategy for enhancing mAb immunotherapies.
JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH
(2022)
Article
Immunology
Bruce D. Wines, Halina M. Trist, Sandra Esparon, Rachael E. Impey, Graham A. Mackay, Robert K. Andrews, Tatiana P. Soares da Costa, Geoffrey A. Pietersz, Ross Baker, P. Mark Hogarth
Summary: The activation of Fc gamma RIIa by monoclonal antibodies requires interaction with both the Fab and Fc regions simultaneously on the same receptor molecules.
FRONTIERS IN IMMUNOLOGY
(2021)
Article
Immunology
Christoph Gstottner, Alexander Knaupp, Gestur Vidarsson, Dietmar Reusch, Tilman Schlothauer, Manfred Wuhrer, Elena Dominguez-Vega
Summary: The impact of antibody glycoforms on Fc gamma RIIa activation and immune responses was investigated using an affinity capillary electrophoresis-mass spectrometry approach. The results showed clear differences in binding between different glycoforms of antibodies, and the assay was also evaluated for different variants of the Fc gamma RIIa receptor. This method provides a fast and efficient way to establish the structure-function relationships of different antibody species.
FRONTIERS IN IMMUNOLOGY
(2022)
Article
Medicine, Research & Experimental
Da Chen, Yingjie Zhao, Mingyu Li, Hang Shang, Na Li, Fan Li, Wei Wang, Yuan Wang, Ruina Jin, Shiyu Liu, Xun Li, Shan Gao, Yujie Tian, Ruonan Li, Huanhuan Li, Yongyan Zhang, Mingjuan Du, Youjia Cao, Yan Zhang, Xin Li, Yi Huang, Liaoyuan A. Hu, Fubin Li, Hongkai Zhang
Summary: Fc engineering has become a focus in antibody drug development. A mammalian cell display-based platform was developed to screen millions of Fc variants for optimized binding to Fc gamma RIIIa or Fc gamma RIIb. Novel Fc variants with enhanced binding and improved effector function were successfully identified.
Review
Biochemistry & Molecular Biology
Catherine Forest-Nault, Jimmy Gaudreault, Olivier Henry, Yves Durocher, Gregory De Crescenzo
Summary: Surface plasmon resonance (SPR)-based optical biosensors play a crucial role in studying the quality attributes of monoclonal antibodies (mAbs), particularly the influence of N-glycosylation on IgG-Fc gamma R interactions. Discrepancies in research conclusions are partly attributed to experimental design and data analysis methods in SPR assays. Recent advancements in SPR analysis methods and glycoprofile control strategies are promising for a better understanding of IgG-Fc gamma R interactions.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Review
Biochemistry & Molecular Biology
Alexander C. Martins, Mariana Y. Oshiro, Fernando Albericio, Beatriz G. de la Torre, Gustavo Jose Pereira, Rodrigo Gonzaga
Summary: Despite being relatively new, biological drugs have shown great potential and have significantly improved patient survival with fewer adverse reactions. The number of these drugs approved by the FDA has increased in recent years, signaling a promising future for the field.
Review
Biochemistry & Molecular Biology
Patricia Gogesch, Simone Dudek, Ger van Zandbergen, Zoe Waibler, Martina Anzaghe
Summary: Efforts have been made to ensure the safety and efficacy of therapeutic monoclonal antibodies since the approval of the first mAb in 1986. Various cell-based assays have been established to evaluate Fc-mediated effector functions of therapeutic mAbs. Optimization strategies such as point mutations and altered glycosylation patterns have led to the development of next-generation therapeutic mAbs with improved efficacy.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Biochemical Research Methods
Vishal Kamat, Candice Boutot, Ashique Rafique, Christian Granados, Jing Wang, Ashok Badithe, Marcela Torres, Ishita Chatterjee, Olav Olsen, William Olson, Tammy Huang
Summary: In this study, six mouse monoclonal antibodies (mAbs) specific to human Fc were characterized and found to have high affinity binding to hIgG, including variants with mutations. These mouse antibodies exhibited higher binding capacity and reproducible capture compared to goat polyclonal antibodies.
ANALYTICAL BIOCHEMISTRY
(2022)
Article
Health Care Sciences & Services
David Vogrinc, Katja Goricar, Tanja Kunej, Vita Dolzan
Summary: miRNAs are crucial in neurodegenerative diseases, particularly Alzheimer's disease, offering potential for diagnostic advancements. EV-miRNAs in peripheral blood could aid in early and less invasive AD diagnosis, while research has identified candidates for novel AD biomarkers.
JOURNAL OF PERSONALIZED MEDICINE
(2021)
Article
Endocrinology & Metabolism
Erika Prasnikar, Tanja Kunej, Mario Gorenjak, Uros Potocnik, Borut Kovacic, Jure Knez
Summary: Through RNA sequencing analysis and endometrial dating, we identified altered response to interferon (IFN) signaling as the most promising candidate mechanism for impaired uterine receptivity in women with adenomyosis.
REPRODUCTIVE BIOLOGY AND ENDOCRINOLOGY
(2022)
Article
Genetics & Heredity
Alesa Kristan, Natasa Debeljak, Tanja Kunej
Summary: EPAS1, also known as HIF2 ff, plays a crucial role in mediating cellular and systemic response to hypoxia by regulating the transcription of many hypoxia-responsive genes. This study integrated a variety of data on EPAS1, including promoter-binding proteins, miRNAs, post-translational modifications, and disease-related variants and target genes, to enhance understanding of EPAS1 activity and regulation. The comprehensive map provides insights into the complex mechanisms that regulate EPAS1 expression, stability, and activity on various OMICs levels.
Article
Genetics & Heredity
Tanja Kunej
Summary: This study constructed an integrative map of genomic elements associated with the HIF1A gene, prioritizing potentially deleterious variants. It revealed transcriptional and post-transcriptional regulators, downstream targets, and genetic variants related to HIF1A. This holistic view of the gene lays the groundwork for future data supplementation.
Article
Health Care Sciences & Services
Aleksander Turk, Tanja Kunej, Borut Peterlin
Summary: Alzheimer's Disease (AD) is a progressive neurodegenerative disorder and the most common cause of dementia, making early diagnosis challenging. Research on miRNAs as biomarkers for AD diagnostics has potential. An analysis using tools such as Cytoscape, STRING, and mirPath revealed potential disease modules for further biomarker development from experimentally validated AD-associated MTIs obtained from miRTarBase.
JOURNAL OF PERSONALIZED MEDICINE
(2021)
Article
Biochemistry & Molecular Biology
Aleksander Turk, George A. Calin, Tanja Kunej
Summary: This study conducted data synthesis using two databases to identify central miRNAs for leukemia. The analysis revealed a large, highly interconnected network of miRNA-target interactions (MTI) between leukemia-associated genes and miRNAs. Certain miRNAs were identified as potential central disease molecules for multiple leukemia types. Further studies are needed to elucidate the therapeutic potential of miRNAs in leukemia.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Biochemistry & Molecular Biology
Spela Mikec, Martin Simon, Nicholas M. Morton, Santosh S. Atanur, Janez Konc, Peter Dovc, Simon Horvat, Tanja Kunej
Summary: This study investigated the association between Hif3a sequence variants and fat deposition in mouse selection lines for fatness and leanness. The results suggest a potential involvement of Hif3a in fat deposition. Using various techniques and databases, the researchers identified multiple sequence variants within Hif3a and constructed a map of potential regulatory regions. Furthermore, several variants were prioritized for further functional studies.
MOLECULAR BIOLOGY REPORTS
(2022)
Review
Andrology
George Anifandis, Peter Sutovsky, Paul J. Turek, Shawn L. Chavez, Tanja Kunej, Christina I. Messini, Samantha B. Schon, Anna Mavroforou, Eli Y. Adashi, Stephen A. Krawetz
Summary: The use of assisted reproductive therapies (ARTs) has increased significantly, but it also comes with epigenetic risks. Researchers have studied the epigenetic changes induced by ART using human samples and animal models, and discussed the ethical aspects of ART research and the morality of human embryo research.
SYSTEMS BIOLOGY IN REPRODUCTIVE MEDICINE
(2022)
Article
Andrology
Spela Mikec, Ziva Kolenc, Borut Peterlin, Simon Horvat, Neza Pogorevc, Tanja Kunej
Summary: This study aims to develop a catalog of syndromes and corresponding genes associated with male infertility and visualize a genome-phenome network of syndromic male subfertility. The catalog and network provide valuable resources for understanding the factors and mechanisms underlying male infertility.
Article
Cardiac & Cardiovascular Systems
Aleksander Turk, Tanja Kunej
Summary: This study aimed to aggregate genetic risk factors associated with the comorbidity of cancer and cardiovascular diseases (CVD). By screening literature, visualizing data as a gene-disease network, and performing pathway enrichment analysis, the study revealed a highly interconnected network of genes with significant involvement in DNA damage repair pathways.
FRONTIERS IN CARDIOVASCULAR MEDICINE
(2022)
Review
Andrology
Ana Ogrinc Wagner, Aleksander Turk, Tanja Kunej
Summary: Infertility is a common problem, and male factor is a major cause in 30% of infertile couples. Research on infertility has mainly focused on chromosomal abnormalities and sequence variants in protein-coding genes, but there are also multiple factors across various omics levels that contribute to infertility phenotypes. Integrative multi-omics analysis is important for understanding the complex etiology of male infertility and may lead to improved screening methods and treatment options.
WORLD JOURNAL OF MENS HEALTH
(2023)
Article
Biochemistry & Molecular Biology
Spela Mikec, Simon Horvat, Hongyang Wang, Jennifer Michal, Tanja Kunej, Zhihua Jiang
Summary: The complex etiology of obesity is influenced by both genetics and environment, making it a challenging research and health problem. This study focused on mRNA polyadenylation (PA) genes, which play a role in obesity but have not been extensively researched. Using mouse models, the researchers identified several genes with differentially expressed APA isoforms associated with obesity. These findings provide insights into potential therapeutic strategies for managing obesity.
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
(2023)
Article
Biotechnology & Applied Microbiology
Tanja Kunej, Simon Horvat, Janez Salobir, Blaz Stres, Spela Mikec, Tomaz Accetto, Gorazd Avgustin, Bojana Bogovic Matijasic, Angela Cividini, Andreja Canzek Majhenic, Marko Cepon, Leon Deutsch, Ida Djurdjevic, Emil Erjavec, Gregor Gorjanc, Antonija Holcman, Dusanka Jordan, Luka Juvancic, Stane Kavcic, Ajda Kermauner, Marija Klopcic, Tina Kocjancic, Milena Kovac, Ales Kuhar, Andrej Lavrencic, Jakob Leskovec, Alenka Levart, Spela Malovrh, Romana Marinsek-Logar, Petra Mohar Lorbeg, Mojca Narat, Tanja Obermajer, Diana Paveljsek, Tatjana Pirman, Klemen Potocnik, Ilona Rac, Vida Rezar, Irena Rogelj, Mojca Simcic, Ales Snoj, Simona Susnik Bajec, Tanja Sumrada, Dusan Tercic, Primoz Treven, Masa Vodovnik, Manja Zupan Semrov, Jaka Zgajnar, Silvester Zgur, Peter Dovc
Summary: This article explores how integrative biology research in the 21st century can benefit from lessons learned in animal science. The authors share three key lessons from their experience in the past two decades, emphasizing the importance of cultivating multiomics knowledge through an integrative biology framework. They also highlight the significant prospects and relevance of studying animal science and nutrition in relation to human health, particularly during the current COVID-19 pandemic.
OMICS-A JOURNAL OF INTEGRATIVE BIOLOGY
(2022)
Meeting Abstract
Biochemistry & Molecular Biology
Alesa Kristan, Jana Tomc, Tadeja Rezen, Tanja Kunej, Rok Kolic, Andrej Vuga, Martina Fink, Sasa Anzej Doma, Irena Preloznik Zupan, Tadej Pajic, Natasa Debeljak
EUROPEAN JOURNAL OF HUMAN GENETICS
(2022)
Article
Biotechnology & Applied Microbiology
Bostjan Petric, Tanja Kunej, Aljosa Bavec
Summary: PON1 enzyme, present in mammalian blood, displays diverse functions such as lactonase, arylesterase, and paraoxonase activities, and is usually investigated using artificial substrates. The literature often incorrectly assumes equivalence among PON1 enzyme activities with different substrates, with poor correlations observed. The multi-omics analysis of PON1 lactonase activity explores genetic, epigenetic, proteomic, and lipidomic variations, as well as environmental, clinical, and demographic factors influencing PON1 function and its associations with various health states and diseases.
OMICS-A JOURNAL OF INTEGRATIVE BIOLOGY
(2021)