ArticleThe Journal of biological chemistry2017
Cytoplasmic poly(A)-binding protein 1 (PABPC1) interacts with the RNA-binding protein hnRNPLL and thereby regulates immunoglobulin secretion in plasma cells.
Article in The Journal of biological chemistry, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.
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Who cites it
26 citing papers in PubMed, 1 synthesis or guideline pooled it, 33 citations in OpenAlex.
- PABPC1--mRNA stability, protein translation and tumorigenesis.Frontiers in oncology · 2022Pooled it
- PABPC1 in Cancer: From a Translational Housekeeper to a Stress-Responsive Regulatory Hub.Cancer science · 2026Review
- The RNA-Binding Protein PARN Remodeled 3' UTR Structure Defines Poly(A)-Loading Sites to Mediate Immunoglobulin Homeostasis.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- HnRNP A1 and A2B1 enforce Ezh2 mRNA splicing to promote germinal center B cell responses.Nature communications · 2026Article
- Dynamic uterine microenvironment drives endometrial adenocarcinoma carcinogenesis and progression.Communications biology · 2026Article
- Evolutionary Analysis of the hnRNP Interactomes and Their Functions in Eukaryotes.Biochemical genetics · 2025Article
- SLC27A5 inhibits cancer stem cells by inducing alternative polyadenylation of METTL14 in hepatocellular carcinoma.Genes & diseases · 2025Article
- Identification of RNA Editing Sites Reveals Functional Modifications with the Addition of Methionine to the Daily Rations of Yaks.Animals : an open access journal from MDPI · 2025Article
- CARF regulates the alternative splicing and piwi/piRNA complexes during mouse spermatogenesis through PABPC1.Acta biochimica et biophysica Sinica · 2024Article
- CWF19L2 is Essential for Male Fertility and Spermatogenesis by Regulating Alternative Splicing.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024Article
- The Continuous Adaptive Challenge Played by Arboviruses: An In Silico Approach to Identify a Possible Interplay between Conserved Viral RNA Sequences and Host RNA Binding Proteins (RBPs).International journal of molecular sciences · 2023Article
- Cytoplasmic poly(A)-binding protein 1 (PABPC1) is a prognostic biomarker to predict survival in nasopharyngeal carcinoma regardless of chemoradiotherapy.BMC cancer · 2023Article
- A novel myeloid cell marker genes related signature can indicate immune infiltration and predict prognosis of hepatocellular carcinoma: Integrated analysis of bulk and single-cell RNA sequencing.Frontiers in molecular biosciences · 2023Article
- A seven-transmembrane protein-TM7SF3, resides in nuclear speckles and regulates alternative splicing.iScience · 2022Article
- Polyadenylate-binding protein cytoplasmic 1 mediates alternative splicing events of immune-related genes in gastric cancer cells.Experimental biology and medicine (Maywood, N.J.) · 2022Article
- Longitudinal Dynamics of Human B-Cell Response at the Single-Cell Level in Response to Tdap Vaccination.Vaccines · 2021Article
- The three as: Alternative splicing, alternative polyadenylation and their impact on apoptosis in immune function.Immunological reviews · 2021Review
- Crucial roles of different RNA-binding hnRNP proteins in Stem Cells.International journal of biological sciences · 2021Review
- Comprehensive Analysis of Prognostic Value of MEX3A and Its Relationship with Immune Infiltrates in Ovarian Cancer.Journal of immunology research · 2021Article
- Immunoglobulin expression and the humoral immune response is regulated by the non-canonical poly(A) polymerase TENT5C.Nature communications · 2020Article
Corrections and comments
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Authors and funding
4 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Increasing evidence indicates that alternative processing of mRNA, including alternative splicing, 3' alternative polyadenylation, and regulation of mRNA stability/translation, represents a major mechanism contributing to protein diversification. For example, in alternative polyadenylation, the 3' end of the immunoglobulin heavy chain mRNA is processed during B cell differentiation, and this processing involves RNA-binding proteins. hnRNPLL (heterogeneous nuclear ribonucleoprotein L-like protein) is an RNA-binding protein expressed in terminally differentiated lymphocytes, such as memory T cells and plasma cells. hnRNPLL regulates various processes of RNA metabolism, including alternative pre-mRNA splicing and RNA stability. In plasma cells, hnRNPLL also regulates the transition from the membrane isoform of the immunoglobulin heavy-chain (mIgH) to the secreted isoform (sIgH), but the precise mechanism remains to be identified. In this study, we report that hnRNPLL specifically associates with cytoplasmic PABPC1 (poly(A)-binding protein 1) in both T cells and plasma cells. We found that although PABPC1 is not required for the alternative splicing of CD45, a primary target of hnRNPLL in lymphocytes, PABPC1 does promote the binding of hnRNPLL to the immunoglobulin mRNA and regulates switching from mIgH to sIgH in plasma cells. Given the recently identified role of PABPC1 in mRNA alternative polyadenylation, our findings suggest that PABPC1 recruits hnRNPLL to the 3'-end of RNA and regulates the transition from membrane Ig to secreted Ig through mRNA alternative polyadenylation. In conclusion, our study has revealed a mechanism that regulates immunoglobulin secretion in B cells via cooperation between a plasma cell-specific RBP (hnRNPLL) and a universally expressed RBP (PABPC1).
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Registered trials
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