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Recombinant bovine angiogenin (rbAng) was expressed in E. coli at up to 30% of total cell proteins but was produced as inclusion bodies. By investigating the effect of various factors on the refolding yield, we obtained about 60% refolding. After chromatographic purification, about 60 mg purified angiogenin was obtained from 1 l culture. The purified recombinant bovine angiogenin was identical to native bovine angiogenin (nbAng) obtained from cow's milk. Our approach is highly efficient and can be generally used for the production of various types of angiogenin for functional and structural studies as well as therapeutic purposes.
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http://dx.doi.org/10.1023/B:BILE.0000044452.57375.fb | DOI Listing |
BMC Genomics
February 2025
Department of Applied Biotechnology, Molecular Biology Researches & Studies Institute, Assiut University, Assiut, 71526, Egypt.
Background: tRNA fragments (tRFs) are small non-coding RNAs generated from cleaved tRNA molecules, playing key roles in gene regulation and cellular processes. Produced by ribonucleases like angiogenin and Dicer, tRFs vary in length and function in gene silencing and stress responses. They interact with Argonaute proteins and affect mRNA levels, and are emerging as potential diagnostic and therapeutic targets for diseases such as cancer and neurodegenerative disorders.
View Article and Find Full Text PDFInt J Biol Macromol
December 2024
College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China. Electronic address:
Dairy products are of great benefit to human health, and the nutritional differences between different dairy products have attracted attention. In this study, DIA proteomics technique, combined with parallel reaction monitoring (PRM) as a validation method, was used for the qualitative and quantitative analysis of proteins in sheep, goat, and cow milk. In total, 4316 proteins were identified.
View Article and Find Full Text PDFStem Cell Res Ther
June 2024
Department of Surgery, National Taiwan University Hospital and College of Medicine, 7 Chung-Shan S. Rd, Taipei, 100, Taiwan.
RNA Biol
December 2021
Division of Rheumatology, Immunology and Allergy, Brigham and Women's Hospital, Boston, MA, USA.
Under adverse conditions, tRNAs are processed into fragments called tRNA-derived stress-induced RNAs (tiRNAs) by stress-responsive ribonucleases (RNases) such as angiogenin (ANG). Recent studies have reported several biological functions of synthetic tiRNAs lacking post-transcriptional modifications found on endogenous tiRNAs. Here we describe a simple and reproducible method to efficiently isolate ANG-cleaved tiRNAs from endogenous tRNAs.
View Article and Find Full Text PDFFront Physiol
November 2020
Walter-Brendel-Centre of Experimental Medicine, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany.
RNase A (the bovine equivalent to human RNase 1) and RNase 5 (angiogenin) are two closely related ribonucleases. RNase 5 is described as a powerful angiogenic factor. Whether RNase A shares the same angiogenic characteristic, or interferes with vessel growth as demonstrated for arteriogenesis, has never been investigated and is the topic of this present study.
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