Vascular Endothelial Growth Factor (VEGF) promotes angiogenesis in tumours of various cancers. Monoclonal antibodies and nanobodies are one of the potent agents in the treatment of cancer. Due to their high costs, researchers are considering to design and produce peptides as a substitute approach in recent years. The aim of the current study was designing a mimotope against VEGF and evaluate its effects on cell proliferation and tube formation in the HUVEC cell line. For this, a peptide was designed against VEGF and chemically produced. The effects of synthetic peptide and nanobody on the inhibition of proliferation of HUVEC cells were examined using MTT and tube formation assays. The data indicate that the peptide was able to significantly inhibit both HUVEC cell proliferation and tube formation through inhibition of VEGF, highlighting the potential of peptides as a 'novel' class of candidate drugs to inhibit angiogenesis.
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http://dx.doi.org/10.1080/14756366.2020.1758690 | DOI Listing |
Dev Growth Differ
January 2025
Division of Biological Sciences, Nara Institute of Science and Technology, Ikoma, Japan.
The neural tube, the embryonic precursor to the vertebrate central nervous system, comprises distinct progenitor and neuronal domains, each with specific proliferation programs. In this study, we identified TMEM196, a novel transmembrane protein that plays a crucial role in regulating cell proliferation in the floor plate in chick embryos. TMEM196 is expressed in the floor plate, and its overexpression leads to reduced cell proliferation without affecting the pattern formation of the neural tube.
View Article and Find Full Text PDFCurr Opin Struct Biol
January 2025
Institute of Structural and Molecular Biology, School of Natural Sciences, Birkbeck College, Malet Street, London, WC1E 7HX, United Kingdom; Institute of Structural and Molecular Biology, Division of Biosciences, University College London, Gower Street, WC1E 6BT, United Kingdom. Electronic address:
Bacterial conjugation is the unidirectional transfer of DNA (often plasmids, but also other mobile genetic elements, or even entire genomes), from a donor cell to a recipient cell. In Gram-negative bacteria, it requires the formation of three complexes in the donor cell: i-a large, double-membrane-embedded transport machinery called the Type IV Secretion System (T4SS), ii-a long extracellular tube, the conjugative pilus, and iii-a DNA-processing machinery termed the relaxosome. While knowledge has expanded regarding molecular events in the donor cell, very little is known about the machinery involved in DNA transfer into the recipient cell.
View Article and Find Full Text PDFReprod Biol
January 2025
Department of Biology, Edge Hill University, L39 4QP, UK. Electronic address:
Mechanisms controlling the process and patterning of blood vessel development in the placenta remain largely unknown. The close physical proximity of early blood vessels observed in the placenta and the cytotrophoblast, as well as the reported production of vasculogenic growth factors by the latter, suggests that signalling between these two niches may be important. Here, we have developed an in vitro model to address the hypothesis that the cytotrophoblast, by the secretion of soluble factors, drives differentiation of resident sub-trophoblastic mesenchymal stem cells (MSCs) along a vascular lineage, thereby establishing feto-placental circulation.
View Article and Find Full Text PDFCurr Nutr Rep
January 2025
City University of New York Graduate School of Public Health and Health Policy, 55 West 125th Street, New York, NY, 10027, USA.
Purpose Of Review: Nutition has long been of importance in the care of Huntington's disease (HD). The purpose of this review is to summarize recent research relevant to HD nutrition, and to describe some emerging theoretical approaches to research in this area.
Recent Findings: Clinical studies have identified swallowing problems and fear of choking as major impediments to maintaining nutritional status with HD.
Biochemistry
January 2025
Research and Early Development Oncology, Bayer AG, Müllerstr. 178, Berlin 13342, Germany.
The receptor tyrosine kinase EphB4 is involved in tumor angiogenesis, proliferation, and metastasis. Designed ankyrin repeat proteins (DARPins) binding to the EphB4 extracellular domain were identified from a combinatorial library using phage display. Surface plasmon resonance (SPR) allowed us to distinguish between DARPins that either compete with the EphB4 ligand ephrin-B2 for binding to a common site or target a different epitope.
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