Journal of Experimental Medicine | Rockefeller University Press

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Stem Cell Collection 2020

A special collection of recent stem cell research from JCB and JEM
Targeting Sirt1-Nox4 signaling in cancer cachexia
Restriction of memory B cell differentiation
Optimized gene disruption in primary myeloid cells

JEM staff members are working remotely in line with New York City’s efforts to contain COVID-19. While our offices are physically closed, editorial and publication operations continue. JEM staff can be reached via email and phone, as we tend to our family, friends and community. Thank you for your patience and understanding.

Newest Articles

Article

| July 08 2020

EXOC2 mutations cause brain developmental defects

Nicole J. Van Bergen, Syed Mukhtar Ahmed, Felicity Collins, Mark Cowley, Annalisa Vetro, Russell C. Dale, Daniella H. Hock, Christian de Caestecker, Minal Menezes, Sean Massey, Gladys Ho, Tiziana Pisano, Seana Glover, Jovanka Gusman, David A. Stroud, Marcel Dinger, Renzo Guerrini, Ian G. Macara, Ian G. Macara, John Christodoulou, John Christodoulou

Patients with severe developmental delay, dysmorphism, and brain abnormalities were identified as having pathogenic mutations in EXOC2, a critical component of the exocyst complex involved in vesicle trafficking, which caused secretory vesicle transport defects in patient-derived cell lines.

Article

| July 08 2020

High microbiota reactivity of human intestinal IgA

Johanna Kabbert, Julia Benckert, Tim Rollenske, Thomas C.A. Hitch, Thomas Clavel, Vuk Cerovic, Hedda Wardemann, Oliver Pabst

The authors reveal a mechanism of SIgA–microbiota interaction in the adult human gut. They describe antibodies with a high capacity to bind phylogenetically distant members of the microbiota. Such cross-species reactivity does not correlate with antibody polyreactivity but crucially depends on somatic mutations.

Article

| July 08 2020

Protective role of LCN2 in obesity and diabetes

Ioanna Mosialou, Steven Shikhel, Na Luo, Peristera Ioanna Petropoulou, Konstantinos Panitsas, Brygida Bisikirska, Nyanza J. Rothman, Roxane Tenta, Bertrand Cariou, Matthieu Wargny, Elisabeth Sornay-Rendu, Thomas Nickolas, Mishaela Rubin, Cyrille B. Confavreux, Stavroula Kousteni

LCN2 is an osteoblast-enriched secreted protein that regulates food intake. Here, the authors show that LCN2 is upregulated during obesity and diabetes as a protective mechanism to counteract obesity-induced glucose intolerance by decreasing food intake and promoting adaptive β-cell proliferation.

Article

| July 07 2020

SOAT1 dependency in pancreatic cancer

Tobiloba E. Oni, Giulia Biffi, Lindsey A. Baker, Yuan Hao, Claudia Tonelli, Tim D.D. Somerville, Astrid Deschênes, Pascal Belleau, Chang-il Hwang, Francisco J. Sánchez-Rivera, Hilary Cox, Erin Brosnan, Abhishek Doshi, Rebecca P. Lumia, Kimia Khaledi, Youngkyu Park, Lloyd C. Trotman, Scott W. Lowe, Alexander Krasnitz, Christopher R. Vakoc, David A. Tuveson

Uncovering mechanisms that drive pancreatic cancer could lead to effective therapies for this lethal disease. This study reveals how pancreatic cancer cells hyperactivate a pathway to sustain their proliferation. Inhibiting this pathway affects cancer cells, but not normal cells, highlighting a new therapeutic opportunity.

Article

| July 01 2020

Pdap1 supports mature B cell survival and function

Verónica Delgado-Benito, Maria Berruezo-Llacuna, Robert Altwasser, Wiebke Winkler, Devakumar Sundaravinayagam, Sandhya Balasubramanian, Marieta Caganova, Robin Graf, Ali Rahjouei, Marie-Thérèse Henke, Madlen Driesner, Lisa Keller, Alessandro Prigione, Martin Janz, Altuna Akalin, Michela Di Virgilio

Delgado-Benito et al. identify the protein Pdap1 as a regulator of mature B cell homeostasis. Pdap1 protects mature B cells against chronic induction of the integrated stress response and promotes both their survival and antibody gene diversification by CSR and SHM.

Article

| June 30 2020

Single-cell analysis of germinal-center B cells

Antony B. Holmes, Clarissa Corinaldesi, Qiong Shen, Rahul Kumar, Nicolo Compagno, Zhong Wang, Mor Nitzan, Eli Grunstein, Laura Pasqualucci, Riccardo Dalla-Favera, Katia Basso

Single-cell transcriptomic analysis of germinal center B cells identifies multiple linked populations, most of which represent cell of origin of lymphomas. The newly identified cell of origin of diffuse large B cell lymphoma informs on novel prognostic subgroups.

Article

| June 30 2020

Vaccination with leukocidins protects from bloodstream infection

Kayan Tam, Keenan A. Lacey, Joseph C. Devlin, Maryaline Coffre, Alexis Sommerfield, Rita Chan, Aidan O’Malley, Sergei B. Koralov, P’ng Loke, Victor J. Torres

Staphylococcus aureus secretes pore-forming leukocidins that kill leukocytes as part of the bacterium’s evasion strategy. Leukocidin-based vaccination results in toxin-neutralizing antibodies and toxin-specific CD4 lymphocytes that block the toxins and boost host-mediated antimicrobial responses to protect mice from bloodstream infection.

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