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Small ubiquitin-like modifier (SUMO) modification has emerged as an important regulatory mechanism during embryonic development. However, it is not known whether SUMOylation plays a role in the development of the immune system. Here, we show that SUMO-specific protease 1 (SENP1) is essential for the development of early T and B cells. STAT5, a key regulator of lymphoid development, is modified by SUMO-2 and is specifically regulated by SENP1. In the absence of SENP1, SUMO-2 modified STAT5 accumulates in early lymphoid precursors, resulting in a block in its acetylation and subsequent signaling. These results demonstrate a crucial role of SENP1 in the regulation of STAT5 activation during early lymphoid development.
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http://dx.doi.org/10.1016/j.molcel.2011.12.026 | DOI Listing |
Eur J Case Rep Intern Med
September 2025
Respiratory Department, University Hospital Limerick, Limerick, Ireland.
Unlabelled: B-cell lymphomas are highly aggressive forms of lymphoma that commonly present with lymphadenopathy, systemic "B" symptoms, or organ involvement making them easy to recognize; however, a small percentage of B-cell lymphomas can present without any typical symptoms or evidence of lymphadenopathy, resulting in delayed recognition and management. Isolated thrombocytopenia without anaemia or leukopenia is an unusual presentation of B cell lymphomas and may be misdiagnosed as immune thrombocytopenia (ITP). Given the rarity of this presentation, we wish to report a case of a 76-year-old female who presented with palpitations, shortness of breath, and recurrent chest infections.
View Article and Find Full Text PDFImmunooncol Technol
September 2025
Division of Tumor Biology & Immunology, The Netherlands Cancer Institute, Amsterdam, The Netherlands.
Background: Breast cancer is a systemic disease, yet the impact of tumor molecular subtype and disease stage on the systemic immune landscape remains poorly understood. In this study, we comprehensively analyzed the systemic immune landscape in a large cohort of breast cancer patients, encompassing all molecular subtypes and disease stages, alongside a control group of healthy donors.
Materials And Methods: Using multi-parameter flow cytometry, we assessed the abundance, phenotype, and activation status of diverse innate and adaptive immune cell populations across peripheral blood samples from 355 breast cancer patients and 65 healthy donors.
Blood Adv
September 2025
BC Cancer, Vancouver, British Columbia, Canada.
Classical Hodgkin Lymphoma (CHL) is characterized by a complex tumor microenvironment (TME) that supports disease progression. While immune cell recruitment by Hodgkin and Reed-Sternberg (HRS) cells is well-documented, the role of non-malignant B cells in relapse remains unclear. Using single-cell RNA sequencing (scRNA-seq) on paired diagnostic and relapsed CHL samples, we identified distinct shifts in B-cell populations, particularly an enrichment of naïve B cells and a reduction of memory B cells in early-relapse compared to late-relapse and newly diagnosed CHL.
View Article and Find Full Text PDFZhonghua Bing Li Xue Za Zhi
September 2025
Department of Hematology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China.
To investigate the clinicopathological features, diagnosis, and prognosis of aggressive natural killer-cell leukemia (ANKL). A retrospective analysis was conducted on 27 ANKL patients treated at the First Affiliated Hospital of Nanjing Medical University from 2014 to 2024. Their clinical data, histomorphology, and immunophenotype were reviewed.
View Article and Find Full Text PDFBiochim Biophys Acta Rev Cancer
September 2025
Department of Hematology, Navy Medical Center of PLA, Naval Medical University, Shanghai 200052, China,. Electronic address:
Clonal hematopoiesis of indeterminate potential (CHIP) bridges hematopoietic clonality and solid tumorigenesis, unveiling a systemic dimension of somatic mutagenesis in cancer biology. Generally, population studies demonstrate CHIP carriers face elevated risks of cancer and poorer survival outcomes. This review consolidates current knowledge on the role of CHIP as potential biomarkers in the prediction/early detection/prognosis evaluation of various non-hematological cancers.
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