Article
Biology
Jaime James, Yifei Chen, Clara M. Hernandez, Florian Forster, Markus Dagnell, Qing Cheng, Amir A. Saei, Hassan Gharibi, Gonzalo Fernandez Lahore, Annika astrand, Rajneesh Malhotra, Bernard Malissen, Roman A. Zubarev, Elias S. J. Arner, Rikard Holmdahl
Summary: PTPN22 mutation is associated with chronic autoimmune diseases. The mutation enhances T cell signaling and activation, leading to a stronger inflammatory response and development of autoimmune arthritis. The activity of PTPN22 is regulated by oxidation, and the mutation increases the protein's sensitivity to oxidation.
Article
Medicine, Research & Experimental
Won Jin Ho, Sarah Croessmann, Jianping Lin, Zaw H. Phyo, Soren Charmsaz, Ludmila Danilova, Aditya A. Mohan, Nicole E. Gross, Fangluo Chen, Jiajun Dong, Devesh Aggarwal, Yunpeng Bai, Janey Wang, Jing He, James M. Leatherman, Mark Yarchoan, Todd D. Armstrong, Neeha Zaidi, Elana J. Fertig, Joshua C. Denny, Ben H. Park, Zhong-Yin Zhang, Elizabeth M. Jaffee
Summary: Research has shown that PTPN22 could be a viable target for cancer immunotherapy, with the rs2476601 variant being linked to a lower risk of cancer development. Inhibiting PTPN22 was found to enhance activation of CD8(+) T cells and macrophages towards M1-like phenotypes, leading to improved antitumor efficacy. Moreover, combining PTPN22 inhibition with PD-1 blockade further boosted antitumor effects, particularly in cancer patients with the rs2476601 variant.
JOURNAL OF CLINICAL INVESTIGATION
(2021)
Article
Endocrinology & Metabolism
Naiara G. Bediaga, Alexandra L. Garnham, Gaetano Naselli, Esther Bandala-Sanchez, Natalie L. Stone, Joanna Cobb, Jessica E. Harbison, John M. Wentworth, Annette-G. Ziegler, Jennifer J. Couper, Gordon K. Smyth, Leonard C. Harrison
Summary: This study found that cytotoxic CD4(+) T cells play a role in promoting the progression of type 1 diabetes, based on analysis of gene expression and chromatin accessibility in children with the disease.
Review
Immunology
Lucas H. Armitage, Mark A. Wallet, Clayton E. Mathews
Summary: PTPN22 is a crucial immune regulatory protein that has been extensively studied in various immune cells, with particular focus on the impact of autoimmune-associated variants on its function. Despite some research in T cells and B cells, ongoing controversy exists regarding the role of PTPN22 in TCR signaling that needs further clarification.
FRONTIERS IN IMMUNOLOGY
(2021)
Review
Immunology
M. J. Mansilla, S. Presas-Rodriguez, A. Teniente-Serra, I. Gonzalez-Larreategui, B. Quirant-Sanchez, F. Fondelli, N. Djedovic, D. Iwaszkiewicz-Grzes, K. Chwojnicki, D. Miljkovic, P. Trzonkowski, C. Ramo-Tello, E. M. Martinez-Caceres
Summary: Multiple sclerosis (MS) is a leading cause of chronic neurological disability in young to middle-aged adults, and current drug therapies are unable to halt or reverse the disease. Cell-based therapies have been proposed as a potential approach for treating MS.
CELLULAR & MOLECULAR IMMUNOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Jeremy R. B. Newman, Patrick Concannon, Yan Ge
Summary: UBASH3A is a negative regulator of T cell activation and IL-2 production and its relationship with other T1D risk factors is largely unknown. This study reveals a physical interaction between UBASH3A and PTPN22 in T cells, independent of a T1D risk coding variant in PTPN22. Additionally, UBASH3A and PTPN22 transcripts cooperatively affect IL2 expression in human primary CD8(+) T cells, and two independent T1D risk variants in UBASH3A and PTPN22 have a statistical interaction, jointly influencing T1D risk.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Immunology
Robin C. Orozco, Kristi Marquardt, Kerri Mowen, Linda A. Sherman
Summary: The proautoimmune allele of PTPN22 promotes a strong antitumor response in innate and adaptive immune cells, leading to enhanced resistance to tumor growth in mice. This results in increased infiltration of CD8 T cells, CD4 T cells, and cDC1 cells in tumors from PEP-619WW mice, indicating superior control of tumors compared to wild type mice. Additionally, tumor-infiltrating cDC1 cells from PEP-619WW mice show decreased PD-L1 expression, further contributing to the antitumor immune response.
JOURNAL OF IMMUNOLOGY
(2021)
Article
Multidisciplinary Sciences
Zhigang Chen, Rong Fan, Jie Liang, Zexiu Xiao, Junlong Dang, Jun Zhao, Ruihui Weng, Cansheng Zhu, Song Guo Zheng, Ying Jiang
Summary: This study found that NFIL3 deficiency could alleviate MOG35-55-induced EAE by regulating different immune cell subsets, especially the crosstalk between CD4+ T cells and CD11c+ dendritic cells.
JOURNAL OF ADVANCED RESEARCH
(2022)
Review
Biochemistry & Molecular Biology
Chi Ma, Verena Martinez-Rodriguez, Peter R. Hoffmann
Summary: The selenoprotein family comprises 25 members, with SELENOI being a unique member functioning as an ethanolamine phosphotransferase. SELENOI plays a crucial role in the synthesis of cellular membrane constituents, impacting metabolic reprogramming and proliferative capacity in T cells.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Review
Engineering, Biomedical
Jiawei Wang, Jiyuan Yang, Jindrich Kopecek
Summary: B cells play multiple roles in immune responses related to autoimmune diseases and cancers, making B cell targeting strategies widely studied. Common mechanisms of B cell targeting therapies include direct B cell depletion, modulation of BCR signaling, targeting B cell survival factors, and immune checkpoint blockade, with nanocarriers playing an important role in B cell-targeted drug delivery.
ACTA BIOMATERIALIA
(2022)
Review
Immunology
Vincenzo Barnaba
Summary: This article discusses the importance of long-term immunological memory in the long-term survival of species and the cellular and molecular features regulating its development and suppression in different environments. It also outlines therapeutic strategies to address pathological contexts such as infection, tumor, and autoimmunity.
FRONTIERS IN IMMUNOLOGY
(2022)
Article
Multidisciplinary Sciences
Thiago Alves da Costa, Jacob N. Peterson, Julie Lang, Jeremy Shulman, Xiayuan Liang, Brian M. Freed, Susan A. Boackle, Pilar Lauzurica, Raul M. Torres, Roberta Pelanda
Summary: The study using a human immune system mouse model revealed a distinctive phenotype of human autoreactive immature B cells and their presence in human bone marrow samples. Additionally, alterations in marker expression were observed in mice engrafted with human immune systems genetically predisposed to autoimmunity.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Immunology
Pamela J. Lincez, Iryna Shanina, Marc S. Horwitz
Summary: The study demonstrates that different sensing mechanisms of MDA5 and TLR3 towards the same virus can lead to distinct signatures of IFN-alpha and IFN-ss, resulting in different disease outcomes. Regulating the induction of IFN-I at the site of virus infection can create a local site of interferonopathy, leading to loss of T cell regulation and induction of autoimmune diabetes. The research provides evidence for specific control of IFN-I driving various responses, ranging from virus clearance to onset of autoimmune diabetes.
FRONTIERS IN IMMUNOLOGY
(2021)
Article
Medicine, Research & Experimental
Xuezhu Wang, Guanqun Wang, Zilong Wu, Yucheng Dong, Yue Shi, Fan Yang, Xinyu Chen, Jun Wang, Shunda Du, Haifeng Xu, Yongchang Zheng
Summary: This study identified a subgroup of immunogenic Asian intrahepatic cholangiocarcinoma (ICC) characterized by T cell exhaustion and neutrophil extracellular traps. The elevated levels of circ-PTPN22 and circ-ADAMTS6 in tumor tissues and plasma exosomes of this subgroup suggest their potential as circulating RNA biomarkers. It is possible to detect and treat this subgroup using plasma exosomal circRNAs and immune checkpoint blockade.
MOLECULAR THERAPY-NUCLEIC ACIDS
(2023)
Review
Immunology
Claire F. Beesley, Nina R. Goldman, Taher E. Taher, Christopher P. Denton, David J. Abraham, Rizgar A. Mageed, Voon H. Ong
Summary: Systemic sclerosis (SSc) is an immune-mediated rheumatic disease characterized by excessive extracellular matrix deposition. B cells play a fundamental role in the pathogenesis and development of SSc, as they infiltrate lesional sites and produce profibrotic cytokines. B cell counts are increased in SSc patients and show differences in various B cell compartments. B cell signaling is impaired in SSc patients, and B cell depletion therapy has shown therapeutic benefits.
FRONTIERS IN IMMUNOLOGY
(2023)