JOTO1007 (ethyl 2-[N-p-chlorobenzyl-(2'-methyl)] anilino-4-oxo-4,5-dihydrofuran -3-carboxylate) has anticancer effects in human cervical cancer Ca Ski cells. However, its mechanism of action on the cell migration and invasion of human cervical cancer Ca Ski cells is not fully understood. In this study, firstly, the effects of JOTO1007 on the migration and invasion of Ca Ski cells were examined by using matrigel counting. The results showed that JOTO1007 suppressed the migration and invasion of the Ca Ski cells. Secondly, the effect of JOTO1007 on the levels of proteins associated with cell metastasis was examined using Western blotting. The results indicated that JOTO1007 inhibited the levels of son of sevenless homolog 1 (SOS-1), growth factor receptor-bound protein 2 (GRB2), Ras homolog gene family, member A (RhoA), Rho-associated, coiled-coil containing protein kinase 1 (ROCK-1), focal adhesion kinase (FAK), phosphorylated-c-jun (p-c-jun), nuclear factor kappa B (NF-kappaB) p65, cyclooxygenase-2 (COX-2), extracellular signal-regulated kinases 1/2 (ERK1/2), matrix metalloproteinase-2 (MMP-2), MMP-7 and MMP-9 but promoted the levels of protein kinase C (PKC), phosphoinositide 3-kinases (PI3K), MAP kinase kinase kinase 3 (MEKK3), mitogen-activated protein kinase kinase 7 (MKK7), c-jun and inducible nitric oxide synthases (iNOS), while not affecting Ras, phosphorylated-ERK (p-ERK), p38 and c-jun N-terminal kinase 1/2 (JNK1/2), which finally led to the inhibition of migration and invasion of the Ca Ski cells in vitro. Overall, JOTO1007 inhibited NF-kappaB which then led to the inhibition of the MMP-2, -7 and -9 expression followed by the inhibition of migration and invasion in the Ca Ski cells.
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Front Immunol
January 2025
Department of Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea.
Introduction: T-lymphopenia (TLP) is a frequently observed condition in cancer patients, often exacerbated by conventional chemo/radiotherapy, which impairs the efficacy of subsequent immune checkpoint blockade (ICB) therapy. This study aimed to understand the impact of TLP on ICB responsiveness and explore potential therapeutic strategies to enhance antitumor immunity.
Methods: To investigate ICB responsiveness depending on the severity of TLP, first, we established TLP mouse models that mimic clinically observed mild and severe TLP through thymectomy and anti-Thy1-induced peripheral T cell depletion.
Nat Commun
December 2024
The SKI Stem Cell Research Facility, The Center for Stem Cell Biology and Developmental Biology Program, Sloan-Kettering Institute for Cancer Research, 1275 York Avenue, New York, NY, USA.
Prime editing (PE) allows for precise genome editing in human pluripotent stem cells (hPSCs), such as introducing single nucleotide modifications, small insertions or deletions at a specific genomic locus. Here, we systematically compare a panel of prime editing conditions in hPSCs and generate a potent prime editor, "PE-Plus", through co-inhibition of mismatch repair and p53-mediated cellular stress responses. We further establish an inducible prime editing platform in hPSCs by incorporating the PE-Plus into a safe-harbor locus and demonstrated temporal control of precise editing in both hPSCs and differentiated cells.
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December 2024
Department of Traumatic Orthopedics, Yuebei People's Hospital Affiliated to Shantou University School of Medicine, Shaoguan 512026, China.
EMBO J
January 2025
Weill Cornell Graduate School of Medical Sciences, Cornell University, New York, NY, 10021, USA.
DNA double-strand breaks (DSBs) are nucleolytically processed to generate single-stranded DNA for homologous recombination. In Saccharomyces cerevisiae meiosis, this resection involves nicking by the Mre11-Rad50-Xrs2 complex (MRX), then exonucleolytic digestion by Exo1. Chromatin remodeling at meiotic DSBs is thought necessary for resection, but the remodeling enzyme was unknown.
View Article and Find Full Text PDFElife
November 2024
Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, United States.
Systemic lupus erythematosus (SLE) is an autoimmune disease, the pathophysiology and genetic basis of which are incompletely understood. Using a forward genetic screen in multiplex families with SLE, we identified an association between SLE and compound heterozygous deleterious variants in the non-receptor tyrosine kinases (NRTKs) and . Experimental blockade of ACK1 or BRK increased circulating autoantibodies in vivo in mice and exacerbated glomerular IgG deposits in an SLE mouse model.
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