PMID- 38324637 OWN - NLM STAT- MEDLINE DCOM- 20240209 LR - 20240209 IS - 1946-6242 (Electronic) IS - 1946-6234 (Linking) VI - 16 IP - 733 DP - 2024 Feb 7 TI - Type 2-polarized memory B cells hold allergen-specific IgE memory. PG - eadi0944 LID - 10.1126/scitranslmed.adi0944 [doi] AB - Allergen-specific immunoglobulin E (IgE) antibodies mediate pathology in diseases such as allergic rhinitis and food allergy. Memory B cells (MBCs) contribute to circulating IgE by regenerating IgE-producing plasma cells upon allergen encounter. Here, we report a population of type 2-polarized MBCs defined as CD23(hi), IL-4Ralpha(hi), and CD32(low) at both the transcriptional and surface protein levels. These MBC2s are enriched in IgG1- and IgG4-expressing cells while constitutively expressing germline transcripts for IgE. Allergen-specific B cells from patients with allergic rhinitis and food allergy were enriched in MBC2s. Furthermore, MBC2s generated allergen-specific IgE during sublingual immunotherapy, thereby identifying these cells as a major reservoir for IgE. The identification of MBC2s provides insights into the maintenance of IgE memory, which is detrimental in allergic diseases but could be beneficial in protection against venoms and helminths. FAU - Koenig, Joshua F E AU - Koenig JFE AUID- ORCID: 0000-0002-8909-5039 AD - Schroeder Allergy and Immunology Research Institute, Faculty of Health Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada. FAU - Knudsen, Niels Peter H AU - Knudsen NPH AUID- ORCID: 0000-0003-1400-5657 AD - ALK-Abello A/S, 2970 Horsholm, Denmark. FAU - Phelps, Allyssa AU - Phelps A AUID- ORCID: 0000-0002-5025-7459 AD - Schroeder Allergy and Immunology Research Institute, Faculty of Health Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada. FAU - Bruton, Kelly AU - Bruton K AUID- ORCID: 0000-0003-0817-6134 AD - Schroeder Allergy and Immunology Research Institute, Faculty of Health Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada. FAU - Hoof, Ilka AU - Hoof I AD - ALK-Abello A/S, 2970 Horsholm, Denmark. FAU - Lund, Gitte AU - Lund G AUID- ORCID: 0000-0003-2221-7465 AD - ALK-Abello A/S, 2970 Horsholm, Denmark. FAU - Libera, Danielle Della AU - Libera DD AUID- ORCID: 0009-0000-3633-051X AD - Schroeder Allergy and Immunology Research Institute, Faculty of Health Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada. FAU - Lund, Anders AU - Lund A AUID- ORCID: 0000-0003-0051-8400 AD - ALK-Abello A/S, 2970 Horsholm, Denmark. FAU - Christensen, Lars Harder AU - Christensen LH AUID- ORCID: 0000-0003-4230-7820 AD - ALK-Abello A/S, 2970 Horsholm, Denmark. FAU - Glass, David R AU - Glass DR AUID- ORCID: 0000-0001-9924-167X AD - Vaccine and Infectious Diseases Division, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA. FAU - Walker, Tina D AU - Walker TD AD - Schroeder Allergy and Immunology Research Institute, Faculty of Health Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada. FAU - Fang, Allison AU - Fang A AUID- ORCID: 0000-0002-5865-8695 AD - Schroeder Allergy and Immunology Research Institute, Faculty of Health Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada. FAU - Waserman, Susan AU - Waserman S AUID- ORCID: 0000-0002-2136-5995 AD - Schroeder Allergy and Immunology Research Institute, Faculty of Health Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada. FAU - Jordana, Manel AU - Jordana M AUID- ORCID: 0000-0002-5861-5994 AD - Schroeder Allergy and Immunology Research Institute, Faculty of Health Sciences, McMaster University, Hamilton, ON L8S 4L8, Canada. FAU - Andersen, Peter S AU - Andersen PS AUID- ORCID: 0000-0001-7615-8224 AD - ALK-Abello A/S, 2970 Horsholm, Denmark. LA - eng PT - Journal Article DEP - 20240207 PL - United States TA - Sci Transl Med JT - Science translational medicine JID - 101505086 RN - 0 (Allergens) RN - 37341-29-0 (Immunoglobulin E) RN - 0 (Immunoglobulin G) SB - IM MH - Humans MH - *Rhinitis, Allergic, Seasonal/metabolism MH - Memory B Cells MH - Allergens MH - Immunoglobulin E MH - *Rhinitis, Allergic MH - Immunoglobulin G MH - *Food Hypersensitivity EDAT- 2024/02/07 18:42 MHDA- 2024/02/09 06:42 CRDT- 2024/02/07 14:04 PHST- 2024/02/09 06:42 [medline] PHST- 2024/02/07 18:42 [pubmed] PHST- 2024/02/07 14:04 [entrez] AID - 10.1126/scitranslmed.adi0944 [doi] PST - ppublish SO - Sci Transl Med. 2024 Feb 7;16(733):eadi0944. doi: 10.1126/scitranslmed.adi0944. Epub 2024 Feb 7.