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Effects of the RNA-Binding Protein Sam68 on Poly(ADP-Ribose)polymerase 1 Activity.
Biochemistry (Mosc)
December 2024
Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia.
Taking into account involvement of the RNA-binding proteins in regulation of activity of poly(ADP-ribose) polymerase 1 (PARP1), a key factor of DNA repair, the effect of the intrinsically disordered protein Sam68 (Src-associated substrate during mitosis of 68 kDa) on catalytic activity of this enzyme was studied. Plasmid containing coding sequence of the Sam68 protein was obtained. Using the obtained construct, conditions for the Sam68 expression in cells were optimized and procedure for protein purification was developed.
View Article and Find Full Text PDF[Effects of long non-coding RNA KLHL7-AS1 on the proliferation and apoptosis of nucleus pulposus cells under the environment of oxidative stress and its mechanism].
Zhonghua Yi Xue Za Zhi
February 2025
Department of Orthopedics, the First Hospital of Huaian City, Nanjing Medical University, Huaian 223300, China.
To investigate the effects of long non-coding RNA KLHL7-AS1 (LncRNA KLHL7-AS1) on the proliferation and apoptosis of nucleus pulposus cells under oxidative stress and its mechanisms. Human nucleus pulposus cells (HUM-iCell-s012) were divided into 4 groups, and unoxidized nucleus pulposus cells were transfected with an empty pcDNA vector (pcDNA-control) to serve as the blank control group. Based on previous studies on oxidative stress-induced nucleus pulposus cell senescence and preliminary experiments, oxidative stress was induced by treating nucleus pulposus cells with 400 μmol/L HO.
View Article and Find Full Text PDFFunctional analysis of quorum sensing-mediated pathogenicity in Burkholderia contaminans SK875 using transposon mutagenesis.
Microb Pathog
January 2025
Department of Animal Science and Technology, Konkuk University, Seoul 05029, Republic of Korea. Electronic address:
Burkholderia contaminans SK875, a member of Burkholderia cepacia complex (Bcc), are known to cause lung infections in cystic fibrosis patients. To gain deeper insights into its quorum sensing (QS)-mediated pathogenicity, we employed a transposon (Tn) insertion-based random mutagenesis approach. A Tn mutant library comprising of 15,000 transconjugants was generated through conjugation between wild-type (WT) recipient B.
View Article and Find Full Text PDFTissue nanotransfection-based endothelial PLCγ2-targeted epigenetic gene editing in vivo rescues perfusion and diabetic ischemic wound healing.
Mol Ther
January 2025
Department of Surgery, McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219, United States; Department of Surgery, Indiana Center for Regenerative Medicine and Engineering, Indiana University School of Medicine, Indianapolis, IN 46202, United States. Electronic address:
Diabetic wounds are complicated by underlying peripheral vasculopathy. Reliance on vascular endothelial growth factor (VEGF) therapy to improve perfusion makes logical sense, yet clinical study outcomes on rescuing diabetic wound vascularization have yielded disappointing results. Our previous work has identified that low endothelial phospholipase Cγ2 (PLCγ2) expression hinders the therapeutic effect of VEGF on the diabetic ischemic limb.
View Article and Find Full Text PDFThe role of Box A of HMGB1 in producing γH2AX associated DNA breaks in lung cancer.
Sci Rep
January 2025
Center of Excellence in Molecular Genetics of Cancer and Human Diseases, Department of Anatomy, Faculty of Medicine, Chulalongkorn University, King Chulalongkorn Memorial Hospital, Bangkok, Thailand.
An ideal chemotherapeutic agent damages DNA, specifically in cancer cells, without harming normal cells. Recently, we used Box A of HMGB1 plasmid as molecular scissors to produce DNA gaps in normal cells. The DNA gap relieves DNA tension and increases DNA strength, preventing DNA double-strand breaks (DSBs).
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