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The H3K4 methyltransferase SETD1A plays an essential role in both development and cancer. However, essential components involved in SETD1A chromatin binding remain unclear. Here, we discovered that BOD1L exhibits the highest correlated SETD1A co-dependency in human cancer cell lines. BOD1L knockout reduces leukemia cells in vitro and in vivo, and mimics the transcriptional profiles observed in SETD1A knockout cells. The loss of BOD1L immediately reduced SETD1A distribution at transcriptional start sites (TSS), induced transcriptional elongation defect, and increased the RNA polymerase II content at TSS; however, it did not reduce H3K4me3. The Shg1 domain of BOD1L has a DNA binding ability, and a tryptophan residue (W104) in the domain recruits SETD1A to chromatin through the association with SETD1A FLOS domain. In addition, the BOD1L-SETD1A complex associates with transcriptional regulators, including E2Fs. These results reveal that BOD1L mediates chromatin and SETD1A, and regulates the non-canonical function of SETD1A in transcription.
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http://dx.doi.org/10.1093/nar/gkae605 | DOI Listing |
Curr Issues Mol Biol
August 2025
Department of Pathology, Fox Chase Cancer Center, Temple Health, Philadelphia, PA 19121, USA.
Homologous recombination deficiency (HRD) is a pivotal biomarker in precision oncology, driving therapeutic strategies for ovarian and breast cancers through impaired DNA double-strand break repair. This narrative review synthesizes recent advances (2021-2025) in HRD's biological basis, prevalence, detection methods, and clinical implications, focusing on high-grade serous ovarian carcinoma (HGSOC; ~50% HRD prevalence) and triple-negative breast cancer (TNBC; 50-70% prevalence). HRD arises from genetic (, , ) and epigenetic alterations (e.
View Article and Find Full Text PDFNat Commun
August 2025
Department of Immunology and Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China.
Affinity maturation and differentiation of B cells in the germinal center (GC) are tightly controlled by epigenetically regulated transcription programs, but the underlying mechanisms are only partially understood. Here we show that Cfp1, an integral component of the histone methyltransferase complex Setd1A/B, is critically required for GC responses. Cfp1 deficiency in activated B cells greatly impairs GC formation with diminished proliferation, somatic hypermutation and affinity maturation.
View Article and Find Full Text PDFJ Genet Eng Biotechnol
September 2025
The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou 510405, China; Department of Dermatovenereology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou 510120, China. Electronic addr
Regulated cell death (RCD) is crucial for the advancement of psoriasis, and providing opportunities as diagnostic indicators and drug sensitivity markers for psoriasis. Nevertheless, there is a lack of exploration regarding a thorough evaluation of RCD and psoriasis. 10 transcriptome datasets from psoriasis patients were retrieved, and then RCD mRNA profile was generated consensus cluster.
View Article and Find Full Text PDFCell Death Dis
August 2025
Department of Molecular Oncology, Graduate School of Medicine, Chiba University, Chiba-shi, Japan.
SETD1A is a member of the KMT2 histone H3K4 methyltransferase family of mammalian proteins. Aberrant SETD1A expression is associated with a poor prognosis in patients with gastric cancer (GC). We found that the catalytic domain of SETD1A is nonessential for GC cell proliferation, whereas the non-catalytic FLOS domain is essential.
View Article and Find Full Text PDFJ Dev Biol
August 2025
Department of Medical Sciences, Institute of Biomedicine (iBiMED), University of Aveiro, Agra do Crasto, Edifício 30, 3810-193 Aveiro, Portugal.
Female gametogenesis is orchestrated by dynamic epigenetic modifications. In mammals, SETDB1, a histone H3K9 methyltransferase, is required for proper meiotic progression and early embryonic development. In , the ortholog of SETDB1 plays a critical role in germ cell differentiation, transposon silencing, and the transcriptional repression of specific germline genes during oocyte fate determination.
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