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High CD26 and low CD94 expression identifies an IL-23 responsive Vδ2+ T Cell subset with a MAIT cell-like transcriptional profile

- Wragg, Kathleen, Tan, Hyon, Kristensen, Anne, Nguyen-Robertson, Catriona, Kelleher, Anthony, Parsons, Matthew, Wheatley, Adam, Berzins, Stuart, Pellicci, Daniel, Kent, Stephen, Juno, Jennifer

  • Authors: Wragg, Kathleen , Tan, Hyon , Kristensen, Anne , Nguyen-Robertson, Catriona , Kelleher, Anthony , Parsons, Matthew , Wheatley, Adam , Berzins, Stuart , Pellicci, Daniel , Kent, Stephen , Juno, Jennifer
  • Date: 2020
  • Type: Text , Journal article
  • Relation: Cell Reports Vol. 31, no. 11 (2020), p.
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  • Description: Vδ2+ T cells play a critical role in immunity to micro-organisms and cancer but exhibit substantial heterogeneity in humans. Here, we demonstrate that CD26 and CD94 define transcriptionally, phenotypically, and functionally distinct Vδ2+ T cell subsets. Despite distinct antigen specificities, CD26hiCD94lo Vδ2+ cells exhibit substantial similarities to CD26hi mucosal-associated invariant T (MAIT) cells, although CD26− Vδ2+ cells exhibit cytotoxic, effector-like profiles. At birth, the Vδ2+Vγ9+ population is dominated by CD26hiCD94lo cells; during adolescence and adulthood, Vδ2+ cells acquire CD94/NKG2A expression and the relative frequency of the CD26hiCD94lo subset declines. Critically, exposure of the CD26hiCD94lo subset to phosphoantigen in the context of interleukin-23 (IL-23) and CD26 engagement drives the acquisition of a cytotoxic program and concurrent loss of the MAIT cell-like phenotype. The ability to modulate the cytotoxic potential of CD26hiCD94lo Vδ2+ cells, combined with their adenosine-binding capacity, may make them ideal targets for immunotherapeutic expansion and adoptive transfer. Wragg et al. identify a population of human gd T cells with striking similarities to MAIT cells. These cells dominate the cord blood Vd2 population and upregulate an effector-like program upon antigen and IL-23 stimulation, providing a potential mechanism by which cytotoxic Vd2 cells may accumulate during adolescence and adulthood. © 2020
  • Description: National Health and Medical Research Council, NHMRC

The attributes of plakins in cancer and disease: perspectives on ovarian cancer progression, chemoresistance and recurrence

- Wesley, Tamsin, Berzins, Stuart, Kannourakis, George, Ahmed, Nuzhat

  • Authors: Wesley, Tamsin , Berzins, Stuart , Kannourakis, George , Ahmed, Nuzhat
  • Date: 2021
  • Type: Text , Journal article , Review
  • Relation: Cell Communication and Signaling Vol. 19, no. 1 (2021), p.
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  • Description: The plakin family of cytoskeletal proteins play an important role in cancer progression yet are under-studied in cancer, especially ovarian cancer. These large cytoskeletal proteins have primary roles in the maintenance of cytoskeletal integrity but are also associated with scaffolds of intermediate filaments and hemidesmosomal adhesion complexes mediating signalling pathways that regulate cellular growth, migration, invasion and differentiation as well as stress response. Abnormalities of plakins, and the closely related spectraplakins, result in diseases of the skin, striated muscle and nervous tissue. Their prevalence in epithelial cells suggests that plakins may play a role in epithelial ovarian cancer progression and recurrence. In this review article, we explore the roles of plakins, particularly plectin, periplakin and envoplakin in disease-states and cancers with emphasis on ovarian cancer. We discuss the potential role the plakin family of proteins play in regulating cancer cell growth, survival, migration, invasion and drug resistance. We highlight potential relationships between plakins, epithelial-mesenchymal transition (EMT) and cancer stem cells (CSCs) and discuss how interaction of these processes may affect ovarian cancer progression, chemoresistance and ultimately recurrence. We propose that molecular changes in the expression of plakins leads to the transition of benign ovarian tumours to carcinomas, as well as floating cellular aggregates (commonly known as spheroids) in the ascites microenvironment, which may contribute to the sustenance and progression of the disease. In this review, attempts have been made to understand the crucial changes in plakin expression in relation to progression and recurrence of ovarian cancer. [MediaObject not available: see fulltext.] © 2021, The Author(s).

Effect of hydralazine on angiotensin II-induced abdominal aortic aneurysm in apolipoprotein e-deficient mice

- Wang, Yutang, Sargisson, Owen, Nguyen, Dinh, Parker, Ketura, Pyke, Stephan, Alramahi, Ahmed, Thihlum, Liam, Fang, Yan, Wallace, Morgan, Berzins, Stuart, Oqueli, Ernesto, Magliano, Dianna, Golledge, Jonathan

An emerging role for immune regulatory subsets in chronic lymphocytic leukaemia

- Wallace, Morgan, Alcantara, Marice, Minoda, Yosuke, Kannourakis, George, Berzins, Stuart

  • Authors: Wallace, Morgan , Alcantara, Marice , Minoda, Yosuke , Kannourakis, George , Berzins, Stuart
  • Date: 2015
  • Type: Text , Journal article
  • Relation: International Immunopharmacology Vol. 28, no. 2 (2015), p. 897-900
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  • Description: The last few years has seen the burgeoning of a new category of therapeutics for cancer targeting immune regulatory pathways. Antibodies that block the PD-1/PD-L1 interaction are perhaps the most prominent of these new anti-cancer therapies, but several other inhibitory receptor ligand interactions have also shown promise as targets in clinical trials, including CTLA-4/CD80 and Lag-3/MHC class II. Related to this is a rapidly improving knowledge of 'regulatory' lymphocyte lineages, including NKT cells, MATT cells, B regulatory cells and others. These cells have potent cytokine responses that can influence the functioning of other immune cells and many researchers believe that they could be effective targets for therapies designed to enhance immune responses to cancer. This review will outline our current understanding of FOXP3 + 'Tregs', NKT cells, MAIT cells and B regulatory cells immune regulatory cell populations in cancer, with a particular focus on chronic lymphocytic leukaemia (CLL). We will discuss evidence linking CLL with immune regulatory dysfunction and the potential for new therapies targeting regulatory cells. (C) 2015 Elsevier B.V. All rights reserved.

The role of NFkB in T-lymphocyte development and function

- Valle, Elisha de, Lie, Laurensius, Gugasyan, Raffi, Berzins, Stuart

NKT cell development in the absence of the autoimmune regulator gene (Aire)

- Pitt, Lauren, Hubert, Francois-Xavier, Scott, Hamish, Godfrey, Dale, Berzins, Stuart

  • Authors: Pitt, Lauren , Hubert, Francois-Xavier , Scott, Hamish , Godfrey, Dale , Berzins, Stuart
  • Date: 2008
  • Type: Text , Journal article
  • Relation: European Journal of Immunology Vol. 38, no. 10 (2008), p. 2689-2696
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  • Description: Autoimmune regulator gene (Aire)-deficient mice develop an array of autoimmune lesions that reflect failures of immune tolerance. Negative selection is clearly compromised in these mice, but there is evidence to suggest that other mechanisms of tolerance might also be affected, including a possible impairment of regulatory T cell (Treg) development. Studies to date have failed to demonstrate any significant impact on the development or function of the FOXP31 Treg compartment, but NKT cells represent a distinct regulatory cell lineage that also develop in the thymus and which are known to influence self-tolerance. Aire-related defects coincide with NKT cell deficiencies in a number of animal models, but the direct consequence of Aire-deficiency on NKT cell development has not been established. In this study, we demonstrate that the frequency, distribution and cytokine production of NKT cells and their subsets is principally normal in Aire-deficient mice. We conclude that Aire has little or no effect on regulatory T cell development in general and NKT cells in particular.
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A three-stage developmental pathway for human Vγ9Vδ2 T cells within the postnatal thymus

- Perriman, Louis, Tavakolinia, Naeimeh, Jalali, Sedigheh, Li, Shuo, Hickey, Peter, Amann-Zalcenstein, Daniela, Ho, William, Baldwin, Tracey, Piers, Adam, Konstantinov, Igor, Anderson, Jeremy, Stanley, Edouard, Licciardi, Paul, Kannourakis, George, Naik, Shalin, Koay, Hui-Fern, Mackay, Laura, Berzins, Stuart, Pellicci, Daniel

Thymic development of unconventional T cells: how NKT cells, MAIT cells and γδ T cells emerge

- Pellicci, Daniel, Koay, Hui-Fern, Berzins, Stuart

  • Authors: Pellicci, Daniel , Koay, Hui-Fern , Berzins, Stuart
  • Date: 2020
  • Type: Text , Journal article , Review
  • Relation: Nature Reviews Immunology Vol. 20, no. 12 (2020), p. 756-770
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  • Description: T cell lineages are defined by specialized functions and differential expression of surface antigens, cytokines and transcription factors. Conventional CD4+ and CD8+ T cells are the best studied of the T cell subsets, but ‘unconventional’ T cells have emerged as being more abundant and influential than has previously been appreciated. Key subsets of unconventional T cells include natural killer T (NKT) cells, mucosal-associated invariant T (MAIT) cells and γδ T cells; collectively, these make up ~10% of circulating T cells, and often they are the majority of T cells in tissues such as the liver and gut mucosa. Defects and deficiencies in unconventional T cells are associated with autoimmunity, chronic inflammation and cancer, so it is important to understand how their development is regulated. In this Review, we describe the thymic development of NKT cells, MAIT cells and γδ T cells and highlight some of the key differences between conventional and unconventional T cell development. © 2020, Springer Nature Limited.

Thymic development of human natural killer T cells : recent advances and implications for immunotherapy

- Pellicci, Daniel, Tavakolinia, Naeimeh, Perriman, Louis, Berzins, Stuart, Menne, Christopher

Divergent molecular networks program functionally distinct CD8+skin-resident memory T cells

- Park, Simone, Christo, Susan, Wells, Alexandria, Gandolfo, Luke, Zaid, Ali, Alexandre, Yannick, Burn, Thomas, Schröder, Jan, Collins, Nicholas, Han, Seong-Ji, Guillaume, Stephane, Evrard, Maximilien, Castellucci, Clara, Davies, Brooke, Osman, Maleika, Obers, Andreas, McDonald, Keely, Wang, Huimeng, Mueller, Scott, Kannourakis, George, Berzins, Stuart, Mielke, Lisa, Carbone, Francis, Kallies, Axel, Speed, Terence, Belkaid, Yasmine, Mackay, Laura

Distinct subpopulations of DN1 thymocytes exhibit preferential gamma delta T lineage potential

- Oh, Seungyoul, Liu, Xin, Tomei, Sara, Luo, Mengxiao, Skinner, Jarrod, Berzins, Stuart, Naik, Shalin, Gray, Daniel, Chong, Mark

Divergent SATB1 expression across human life span and tissue compartments

- Nüssing, Simone, Koay, Hui-Fern, Sant, Sneha, Loudovaris, Thomas, Mannering, Stuart, Lappas, Martha, d′Udekem, Yves, Konstantinov, Igor, Berzins, Stuart, Rimmelzwaan, Guus, Turner, Stephen, Clemens, Bridie, Godfrey, Dale, Nguyen, Thi, Kedzierska, Katherine

  • Authors: Nüssing, Simone , Koay, Hui-Fern , Sant, Sneha , Loudovaris, Thomas , Mannering, Stuart , Lappas, Martha , d′Udekem, Yves , Konstantinov, Igor , Berzins, Stuart , Rimmelzwaan, Guus , Turner, Stephen , Clemens, Bridie , Godfrey, Dale , Nguyen, Thi , Kedzierska, Katherine
  • Date: 2019
  • Type: Text , Journal article
  • Relation: Immunology and Cell Biology Vol. 97, no. (2019), p. 498-511
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  • Description: Special AT-rich binding protein-1 (SATB1) is a global chromatin organizer capable of activating or repressing gene transcription in mice and humans. The role of SATB1 is pivotal for T-cell development, with SATB1-knockout mice being neonatally lethal, although the exact mechanism is unknown. Moreover, SATB1 is dysregulated in T-cell lymphoma and proposed to suppress transcription of the Pdcd1 gene, encoding the immune checkpoint programmed cell death protein 1 (PD-1). Thus, SATB1 expression in T-cell subsets across different tissue compartments in humans is of potential importance for targeting PD-1. Here, we comprehensively analyzed SATB1 expression across different human tissues and immune compartments by flow cytometry and correlated this with PD-1 expression. We investigated SATB1 protein levels in pediatric and adult donors and assessed expression dynamics of this chromatin organizer across different immune cell subsets in human organs, as well as in antigen-specific T cells directed against acute and chronic viral infections. Our data demonstrate that SATB1 expression in humans is the highest in T-cell progenitors in the thymus, and then becomes downregulated in mature T cells in the periphery. Importantly, SATB1 expression in peripheral mature T cells is not static and follows fine-tuned expression dynamics, which appear to be tissue- and antigen-dependent. Furthermore, SATB1 expression negatively correlates with PD-1 expression in virus-specific CD8 + T cells. Our study has implications for understanding the role of SATB1 in human health and disease and suggests an approach for modulating PD-1 in T cells, highly relevant to human malignancies or chronic viral infections.

Foxp3+ tregs from langerhans cell histiocytosis lesions co-express CD56 and have a definitively regulatory capacity

- Mitchell, Jenée, Kelly, Jason, Kvedaraite, E., von Bahr Greenwood, Tatiana, Henter, Jan-Inge, Pellicci, Daniel, Berzins, Stuart, Kannourakis, George

  • Authors: Mitchell, Jenée , Kelly, Jason , Kvedaraite, E. , von Bahr Greenwood, Tatiana , Henter, Jan-Inge , Pellicci, Daniel , Berzins, Stuart , Kannourakis, George
  • Date: 2020
  • Type: Text , Journal article
  • Relation: Clinical Immunology Vol. 215, no. (2020), p.
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  • Description: Langerhans cell histiocytosis (LCH) lesions contain myeloid lineage ‘LCH’ cells. Regulatory T cells (Tregs) are also enriched within lesions, although their role in LCH pathogenesis is unknown. LCH cells are thought to produce the transforming growth factor beta (TGF-β) within lesions, however whether Tregs contribute is unestablished. Using flow cytometry, we analyzed relative frequencies of live Tregs from LCH patients and identified CD56 expression and TGF-β production by lesion Tregs. While CD56+ Tregs were enriched in lesions, overall CD56+ T cells were reduced in the blood from active LCH patients compared to non-active disease patients, and there was a negative correlation between CD8+CD56+ T cells and Tregs. We propose that inducing a Treg phenotype in T cells such as CD56+ T cells may be a mechanism by which LCH cells divert inflammatory T cell responses. Thus, Tregs within LCH lesions are likely an important component in LCH pathogenesis. © 2020

Plasma signaling factors in patients with langerhans cell histiocytosis (LCH) correlate with relative frequencies of LCH cells and t cells within lesions

- Mitchell, Jenée, Kvedaraite, Egle, von Bahr Greenwood, Tatiana, Lourda, Magda, Henter, Jan-Inge, Berzins, Stuart, Kannourakis, George

  • Authors: Mitchell, Jenée , Kvedaraite, Egle , von Bahr Greenwood, Tatiana , Lourda, Magda , Henter, Jan-Inge , Berzins, Stuart , Kannourakis, George
  • Date: 2022
  • Type: Text , Journal article
  • Relation: Frontiers in Pediatrics Vol. 10, no. (2022), p.
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  • Description: Langerhans cell histiocytosis (LCH) lesions contain an inflammatory infiltrate of immune cells including myeloid-derived LCH cells. Cell-signaling proteins within the lesion environment suggest that LCH cells and T cells contribute majorly to the inflammation. Foxp3+ regulatory T cells (Tregs) are enriched in lesions and blood from patients with LCH and are likely involved in LCH pathogenesis. In contrast, mucosal associated invariant T (MAIT) cells are reduced in blood from these patients and the consequence of this is unknown. Serum/plasma levels of cytokines have been associated with LCH disease extent and may play a role in the recruitment of cells to lesions. We investigated whether plasma signaling factors differed between patients with active and non-active LCH. Cell-signaling factors (38 analytes total) were measured in patient plasma and cell populations from matched lesions and/or peripheral blood were enumerated. This study aimed at understanding whether plasma factors corresponded with LCH cells and/or LCH-associated T cell subsets in patients with LCH. We identified several associations between plasma factors and lesional/circulating immune cell populations, thus highlighting new factors as potentially important in LCH pathogenesis. This study highlights plasma cell-signaling factors that are associated with LCH cells, MAIT cells or Tregs in patients, thus they are potentially important in LCH pathogenesis. Further study into these associations is needed to determine whether these factors may become suitable prognostic indicators or therapeutic targets to benefit patients. Copyright © 2022 Mitchell, Kvedaraite, von Bahr Greenwood, Lourda, Henter, Berzins and Kannourakis.

A potentially important role for T cells and regulatory T cells in Langerhans cell histiocytosis

- Mitchell, Jenée, Berzins, Stuart, Kannourakis, George

  • Authors: Mitchell, Jenée , Berzins, Stuart , Kannourakis, George
  • Date: 2018
  • Type: Text , Journal article , Review
  • Relation: Clinical Immunology Vol. 194, no. (2018), p. 19-25
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  • Description: Langerhans cell histiocytosis is characterized by lesions containing inflammatory immune cells, including myeloid cells and T cells. Patient mortality remains unacceptably high and new treatment options are required. Several LCH studies have identified aberrant frequencies of T cell subsets with potential immune regulatory properties. High numbers of Foxp3+ regulatory T cells and gamma-delta T cells have been reported in patients with LCH, although, the cause of their presence or their significance is not yet clear. This review describes the current understanding of how LCH develops and progresses, focusing on the growing evidence that regulatory T cell subsets may be important and discussing the exciting potential for harnessing these cells to treat LCH using immune based therapies.

Altered populations of unconventional T Cell lineages in patients with Langerhans Cell Histiocytosis

- Mitchell, Jenée, Kvedaraite, Egle, von Bahr Greenwood, Tatiana, Henter, Jan-Inge, Pellicci, Daniel, Berzins, Stuart, Kannourakis, George

  • Authors: Mitchell, Jenée , Kvedaraite, Egle , von Bahr Greenwood, Tatiana , Henter, Jan-Inge , Pellicci, Daniel , Berzins, Stuart , Kannourakis, George
  • Date: 2018
  • Type: Text , Journal article
  • Relation: Scientific Reports Vol. 8, no. 1 (2018), p. 1-13
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  • Description: Langerhans cell histiocytosis (LCH) lesions are defined by the presence of CD1a+/CD207+ myeloid cells, but many other immune cells are present including unconventional T cells, which have powerful immunoregulatory functions. Unconventional T cell lineages include mucosal-associated invariant T (MAIT) cells, type I natural killer T (NKT) cells and gamma-delta (γδ) T cells, which are associated with many inflammatory conditions, although their importance has not been studied in LCH. We characterized their phenotype and function in blood and lesions from patients with LCH, and identified a deficiency in MAIT cell frequency and abnormalities in the subset distributions of γδ T cells and NKT cells. Such abnormalities are associated with immune dysregulation in other disease settings and are therefore potentially important in LCH. Our study is the first to recognize alterations to MAIT cell proportions in patients with LCH. This finding along with other abnormalities identified amongst unconventional T cells could potentially influence the onset and progression of LCH, thereby highlighting potential targets for new immune based therapies.

Experimental and human evidence for Lipocalin-2 (Neutrophil Gelatinase-Associated Lipocalin NGAL ) in the development of cardiac hypertrophy and heart failure

- Marques, Francine, Prestes, Priscilla, Byars, Sean, Ritchie, Scott, Wurtz, Peter, Patel, Sheila, Booth, Scott, Rana, Indrajeetsinh, Minoda, Yosuke, Berzins, Stuart, Curl, Claire, Bell, James, Wai, Bryan, Srivastava, Piyush, Kangas, Antti, Soininen, Pasi, Ruohonen, Saku, Kahonen, Mika, Lehtimaki, Terho, Raitoharju, Emma, Havulinna, Aki, Perola, Markus, Raitakari, Olli, Salomaa, Veikko, Ala-Korpela, Mika, Kettunen, Johannes, McGlynn, Maree, Kelly, Jason, Wlodek, Mary, Lewandowski, Paul, Delbridge, Lea, Burrell, Louise, Inouye, Michael, Harrap, Stephen, Charchar, Fadi

The glucocorticoid receptor 1A3 promoter correlates with high sensitivity to glucocorticoid-induced apoptosis in human lymphocytes

- Liddicoat, Douglas, Kyparissoudis, Konstantinos, Berzins, Stuart, Cole, Timothy, Godfrey, Dale

  • Authors: Liddicoat, Douglas , Kyparissoudis, Konstantinos , Berzins, Stuart , Cole, Timothy , Godfrey, Dale
  • Date: 2014
  • Type: Text , Journal article
  • Relation: Immunology and Cell Biology Vol. 92, no. 10 (2014), p. 825-836
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  • Description: Glucocorticoids (GCs) are powerful inhibitors of inflammation and immunity. Although glucocorticoid-induced cell death (GICD) is an important part of GCs actions, the cell types and molecular mechanisms involved are not well understood. Untranslated exon 1A3 of the human glucocorticoid receptor (GR) gene is a major determinant of GICD in GICD-sensitive human cancer cell lines, operating to dynamically upregulate GR levels in response to GCs. We measured the GICD sensitivity of freshly isolated peripheral blood mononuclear cells and thymocytes to dexamethasone in vitro, relating this to GR exon 1A3 expression. A clear GICD sensitivity hierarchy was detected: B cells>thymocytes/natural killer (NK) cells>peripheral T cells. Within thymocyte populations, GICD sensitivity decreased with maturation. Interestingly, NK cell subsets were differentially sensitive to GICD, with CD16 + CD56 int (cytotoxic) NK cells being highly resistant to GICD, whereas CD16-CD56 hi (cytokine producing) NK cells were highly sensitive (similar to B cells). B-cell GICD was rescued by co-culture with interleukin-4. Strikingly, although no significant increases in GR protein were observed during 48 h of culture of GICD-sensitive and-resistant cells alike, GR 1A3 expression was increased over pre-culture levels in a manner directly proportional to the GICD sensitivity of each cell type. Accordingly, this is the first evidence that the GR exon 1A3 promoter is differentially regulated during thymic development and maturation of human T cells. Furthermore, human peripheral blood B cells are exquisitely GICD-sensitive in vitro, giving new insight into how GCs may downregulate immunity. Collectively, these data show that GR 1A3 expression is tied with GICD sensitivity in human lymphocytes, underscoring the potential for GR 1A3 expression to be used as a biomarker for sensitivity to GICD. © 2014 Australasian Society for Immunology Inc.

A three-stage intrathymic development pathway for the mucosal-associated invariant T cell lineage

- Koay, Hui-Fern, Gherardin, Nicholas, Enders, Anselm, Loh, Liyen, Mackay, Laura, Almeida, Catarina, Russ, Brendan, Nold-Petry, Claudia, Nold, Marcel, Bedoui, Sammy, Chen, Zhenjun, Corbett, Alexandra, Eckle, Sidonia, Meehan, Bronwyn, d'Udekem, Yves, Konstantinov, Igor, Lappas, Martha, Liu, Ligong, Goodnow, Chris, Fairlie, David, Rossjohn, Jamie, Chong, Mark, Kedzierska, Katherine, Berzins, Stuart, Belz, Gabrielle, McCluskey, James, Uldrich, Adam, Godfrey, Dale, Pellicci, Daniel

A divergent transcriptional landscape underpins the development and functional branching of MAIT cells

- Koay, Hui-Fern, Su, Shian, Amann-Zalcenstein, Daniela, Daley, Stephen, Comerford, Iain, Miosge, Lisa, Whyte, C. E., Konstantinov, Igor, d'Udekem, Yves, Baldwin, Tracey, Hickey, P. F., Berzins, Stuart, Mak, Jeffrey, Sontani, Yovina, Roots, Carla, Sidwell, Tom, Kallies, Axel, Chen, Zhenjun, Nüssing, S., Kedzierska, Katherine, Mackay, Laura, McColl, Simone, Deenick, Elissa, Fairlie, David, McCluskey, James, Goodnow, Chris, Ritchie, Matthew, Belz, Gabrielle, Naik, Shalin, Pellicci, Daniel, Godfrey, Dale