Immunology

Pre-Omicron Immunity Generates IgG⁺ but Not IgA⁺ Memory B Cells Reactive to Omicron Spike Protein

1. T Tsoleridis
2. I Singh
3. D Onion
4. JG Chappell
5. A Kelly
6. J Nightingale
7. AM Valdes
8. BJ Ollivere
9. KB Hoehn
10. RA Urbanowicz
11. JK Ball

Reviewed by PREreview

Lipopolysaccharide stimulates dynamic changes in B cell metabolism to promote proliferation

1. Dana MS Cheung
2. Momchil Razsolkov
3. Fabrizia Bonacina
4. Stephen Andrews
5. Megan Sumoreeah
6. Linda V Sinclair
7. Andrew JM Howden
8. J Simon C Arthur

• Curated by eLife

  eLife Assessment

  This work reveals metabolic pathways and molecular events mechanistically linked to B cell activation. Using an unbiased, comprehensive proteome profiling method and various functional validation approaches, this study generated convincing evidence suggesting a role for amino acid uptake, cholesterol accumulation, and protein prenylation in the proliferation, survival, and biogenesis of B cells stimulated with LPS and other activating stimuli. The significance of the findings is considered to be fundamental, in that they will advance our understanding of cell metabolism during B cell activation.

Reviewed by eLife

Layers of immunity: Deconstructing the Drosophila effector response

1. Faustine Ryckebusch
2. Yao Tian
3. Mylene Rapin
4. Fanny Schüpfer
5. Mark Austin Hanson
6. Bruno Lemaitre

• Curated by eLife

  eLife Assessment

  This work provides one of the first important attempts to look at Drosophila immune responses against bacterial, viral, and fungal pathogens in a way that combines the roles of four major arms in immunity (Imd signaling, Toll signaling, phagocytosis, and melanization) rather than studying them separately. The findings are compelling and the tools provided can be used as they are, or built upon, in various contexts.

Reviewed by eLife

IRF2 degradation tunes the innate immune response

1. Cristhian Cadena
2. Rohit Reja
3. Emma Bolech
4. Joshua D. Webster
5. Vasumathi Kameswaran
6. Marco de Simone
7. Cynthia Chen
8. Jian Jiang
9. Kathy Hotzel
10. Kamela Alegre
11. Zhenyu Tan
12. Raymond Newland
13. Ryan Kelly
14. Spyros Darmanis
15. Bence Daniel
16. Ishan Deshpande
17. Kim Newton
18. Nobuhiko Kayagaki
19. Vishva M. Dixit

Reviewed by Arcadia Science

Clonal stochasticity in early NK cell response to mouse cytomegalovirus is generated by mature subsets of varying proliferative ability

1. Darren Wethington
2. Saeed Ahmad
3. Marc Potempa
4. Giuseppe Giuliani
5. Oscar A Aguilar
6. Maheshwor Poudel
7. Simon Grassmann
8. William Stewart
9. Nicholas M Adams
10. Joseph C Sun
11. Lewis L Lanier
12. Jayajit Das

• Curated by eLife

  eLife Assessment

  This study combines mathematical models and experimental data to analyse the emergence of heterogeneity within clonal NK cell responses during antigen-specific cell expansion. It comprises different experimental data and extensively explores various mathematical models, to study NK cell turnover during acute immune responses and homeostatic turnover within murine cytomegalovirus infection (MCMV). The solid study presents valuable findings and provides insights on heterogeneous NK cell development

Reviewed by eLife

Epidermal Resident Memory T Cell Fitness Requires Antigen Encounter in the Skin

1. Eric S Weiss
2. Toshiro Hirai
3. Haiyue Li
4. Andrew Liu
5. Shannon Baker
6. Ian Magill
7. Jacob Gillis
8. Youran R Zhang
9. Torben Ramcke
10. Kazuo Kurihara
11. The ImmGen Consortium OpenSource T cell Project
12. David Masopust
13. Niroshana Anandasabapathy
14. Harinder Singh
15. David Zemmour
16. Laura K Mackay
17. Daniel H Kaplan

• Curated by eLife

  eLife Assessment

  This manuscript advances the prior finding that antigen recognition in the skill helps establish skin resident memory in CD8 T cells by elucidating the role of TGFBR3 in regulating CD8+ TRM skin persistence upon topical antigen exposure. Key novelty of the your work lies in generation and use of the CD8+ T cell-specific TGFBR3 knockout model, which allows them to demonstrate the role of TGFBR3 in fine tuning the degree of CD8+ T cell skin persistence and that TGFBR3 expression is promoted by CD8+ TRM encountering their cognate antigen upon initial skin entry. This is an important finding and is supported by convincing evidence. There are concerns about the use of FTY720 and the need to establish active TGFbeta limiting conditions to further test this working model.

Reviewed by eLife

CD4 ⁺ T cells promote fibrosis during metabolic dysfunction-associated steatohepatitis

1. Lucía Valenzuela-Pérez
2. Hyun Se Kim Lee
3. Rachel L. Bayer
4. Shravan K. Mishra
5. Alexander M. Washington
6. Qianqian Guo
7. Adam Herman
8. Rondell P. Graham
9. Malaz M. Sidahmed
10. Edward Ssali
11. Adna A. Hassan
12. Ece Janet Dinc
13. Kevin D. Pavelko
14. Gregory J. Gores
15. Patrick Starlinger
16. Xavier S. Revelo
17. Samar H. Ibrahim
18. Enis Kostallari
19. Adebowale O. Bamidele
20. Petra Hirsova

Reviewed by PREreview

Synaptotagmin 1 and Synaptotagmin 7 promote MR1-mediated presentation of Mycobacterium tuberculosis antigens

1. Se-Jin Kim
2. Jessie C Peterson
3. Andrew J Olive
4. Fikadu G Tafesse
5. Corinna A Kulicke
6. Elham Karamooz
7. David M Lewinsohn

• Curated by eLife

  eLife Assessment

  This useful study examines the contribution of synaptotagmin 1 and synaptotagmin 7 to metabolite antigen presentation to mucosal-associated invariant T (MAIT) cells; it begins to address a critical gap in our understanding of the antigen presentation mechanisms to these cells. Strengths of the study include the use of Mtb to study the dynamics of antigen presentation to MAIT cells instead of a synthetic antigen. However, the strength of the evidence to support the conclusion is currently incomplete. The conclusions could be enhanced by additional dissection of some of the cell biological events that lead to antigen presentation by MR1.

Reviewed by eLife

The Mac1 ADP-ribosylhydrolase is a therapeutic target for SARS-CoV-2

1. Rahul K Suryawanshi
2. Priyadarshini Jaishankar
3. Galen J Correy
4. Moira M Rachman
5. Patrick C O'Leary
6. Taha Y Taha
7. Yusuke Matsui
8. Francisco J Zapatero-Belinchón
9. Maria McCavitt-Malvido
10. Yagmur U Doruk
11. Maisie GV Stevens
12. Morgan E Diolaiti
13. Manasi P Jogalekar
14. Huadong Chen
15. Alicia L Richards
16. Pornparn Kongpracha
17. Sofia Bali
18. Mauricio Montano
19. Julia Rosecrans
20. Michael Matthay
21. Takaya Togo
22. Ryan L Gonciarz
23. Saumya Gopalkrishnan
24. R Jeffrey Neitz
25. Nevan J Krogan
26. Danielle L Swaney
27. Brian K Shoichet
28. Melanie Ott
29. Adam R Renslo
30. Alan Ashworth
31. James S Fraser

• Curated by eLife

  eLife Assessment

  This important study presents the development of a novel inhibitor for SARS-CoV-2 Mac1 that has potential utility both as an antiviral therapeutic and as a tool for probing the molecular mechanisms by which infection-induced ADP-ribosylation triggers robust host antiviral responses. Though minor gaps in understanding the compound's precise molecular mechanism of action and its ability to target Mac1 from other coronaviruses remain, the evidence for its effects on SARS-CoV-2 in relevant biological models is compelling.

Reviewed by eLife

scRNA+TCR-seq reveals the proportion and characteristics of dual TCR Treg cells in mouse lymphoid and non-lymphoid tissues

1. Yuanyuan Xu
2. Qi Peng
3. Xiaoping Lu
4. Long Ma
5. Jun Li
6. Xinsheng Yao

• Curated by eLife

  eLife Assessment

  This study reanalyzed previously published scRNA-seq and TCR-seq data to examine the proportion and characteristics of dual-TCR-expressing Treg cells in mice, presenting some useful insights into TCR diversity and immune regulation. However, the evidence is incomplete, particularly with respect to data interpretation, statistical rigor, and the functionality of dual -TCR Treg cells. The study is potentially of interest to immunologists studying T-cell biology.

Reviewed by eLife