Results 71 to 80 of about 372,429 (303)

Divergent Mechanisms Activating RAS and Small GTPases Through Post-translational Modification

Frontiers in Molecular Biosciences, 2021
RAS is a founding member of the RAS superfamily of GTPases. These small 21 kDa proteins function as molecular switches to initialize signaling cascades involved in various cellular processes, including gene expression, cell growth, and differentiation ...
Natsuki Osaka, Yoshihisa Hirota, Yoshihisa Hirota, Doshun Ito, Doshun Ito, Yoshiki Ikeda, Ryo Kamata, Yuki Fujii, Yuki Fujii, Venkat R. Chirasani, Sharon L. Campbell, Koh Takeuchi, Toshiya Senda, Toshiya Senda, Toshiya Senda, Atsuo T. Sasaki, Atsuo T. Sasaki, Atsuo T. Sasaki, Atsuo T. Sasaki   +18 more
doaj   +1 more source

TRAIL‐PEG‐Apt‐PLGA nanosystem as an aptamer‐targeted drug delivery system potential for triple‐negative breast cancer therapy using in vivo mouse model

Molecular Oncology, EarlyView.
Aptamers are used both therapeutically and as targeting agents in cancer treatment. We developed an aptamer‐targeted PLGA–TRAIL nanosystem that exhibited superior therapeutic efficacy in NOD/SCID breast cancer models. This nanosystem represents a novel biotechnological drug candidate for suppressing resistance development in breast cancer.
Gulen Melike Demirbolat, Aslihan Kucuk, Omer Erdogan, Samed Ozer, Bensu Kozan, Tugba Cuceli, Erkan Gumus, Evrim Cevik, Ozge Cevik   +8 more
wiley   +1 more source

Distinct association of HRAS and KRAS with Mn2+ ion illustrated by paramagnetic NMR

Magnetic Resonance Letters
Rat sarcoma virus oncogene (RAS) proteins are of crucial oncogenic proteins and are involved in several essential intracellular processes. The RAS protein has an intrinsic metal binding site for Mg2+, which is important for the conformational stability ...
Jia-Liang Chen, Xun-Cheng Su
doaj   +1 more source

Peptides That Block RAS-p21 Protein-Induced Cell Transformation

Biomedicines, 2023
This is a review of approaches to the design of peptides and small molecules that selectively block the oncogenic RAS-p21 protein in ras-induced cancers. Single amino acid substitutions in this protein, at critical positions such as at Gly 12 and Gln 61,
Matthew R. Pincus, Bo Lin, Purvi Patel, Elmer Gabutan, Nitzan Zohar, Wilbur B. Bowne   +5 more
doaj   +1 more source

Regulation of polarised growth in fungi [PDF]

, 2008
Polarised growth in fungi occurs through the delivery of secretory vesicles along tracks formed by cytoskeletal elements to specific sites on the cell surface where they dock with a multiprotein structure called the exocyst before fusing with the ...
Adamo, Adamo, Adams, Akashi, Ayad-Durieux, Bachewich, Bartnicki-Garcia, Bartnicki-Garcia, Bassilana, Bassilana, Bassilana, Behrens, Berman, Bidlingmaier, Bose, Boyce, Boyce, Boyce, Boyd, Brown, Caviston, Chant, Chapa y Lazo, Collinge, Colman-Lerner, Court, Crampin, Cvrckova, Dong, Drgonova, Dunkler, Feng, Finger, France, Gao, Girbardt, Gladfelter, Goehring, Gorovits, Gulli, Guo, Harris, Harris, Hartwell, Hergovich, Hou, Hou, Irazoqui, Jin, Karnoub, Knechtle, Kohno, Konzack, Kron, Leberer, Leberer, Leberer, Leonhard, Lew, Li, Liu, Loeb, Loeb, Longtine, Mahlert, Mata, McCollum, McCusker, Medkova, Mehta, Mendenhall, Nelson, Nonaka, Novick, Pan, Park, Pearson, Peter, Peter E. Sudbery, Philippsen, Punt, Qadota, Racki, Read, Santangelo, Schmidt, Seiler, Seiler, Sinha, Smith, Soll, Stevenson, Sudbery, Sudbery, Sudbery, Tamaskovic, Tanaka, Tcheperegine, Trinci, Verde, Versele, Virag, Virag, Walton, Walworth, Wedlich-Soldner, Wedlich-Soldner, Wendland, Wu, Yarden, Zhang, Zheng, Zheng   +112 more
core   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

Molecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Upregulation of DAB2IP Inhibits Ras Activity and Tumorigenesis in Human Pancreatic Cancer Cells

Technology in Cancer Research & Treatment, 2020
KRAS mutation-induced Ras activation plays an important role in the pathogenesis of pancreatic cancer, but the role of wild-type Ras and Ras GTPase-activating proteins remains unclear. The present study was designed to determine the expression spectra of
Yifan Duan MD, PhD, Xiaoyu Yin MD, PhD, Xiaorong Lai MD, PhD, Chao Liu MD, PhD, Wenjing Nie MD, MM, Dongfeng Li MM, Zijun Xie MD, PhD, Zijun Li MD, PhD, Fan Meng MD, PhD   +8 more
doaj   +1 more source

Natural Products Attenuating Biosynthesis, Processing, and Activity of Ras Oncoproteins: State of the Art and Future Perspectives

Biomolecules, 2020
RAS genes encode signaling proteins, which, in mammalian cells, act as molecular switches regulating critical cellular processes as proliferation, growth, differentiation, survival, motility, and metabolism in response to specific stimuli.
Renata Tisi, Vadim Gaponenko, Marco Vanoni, Elena Sacco   +3 more
doaj   +1 more source

Overexpression of RPI1, a novel inhibitor of the yeast Ras-cyclic AMP pathway, down-regulates normal but not mutationally activated ras function [PDF]

, 1991
A high-copy-number plasmid genomic library was screened for genes that when overexpressed down-regulate Ras protein activity in Saccharomyces cerevisiae.
Kim, J. H., Powers, S.
core  

Involvement of ras p2I in Neurotrophin-induced Response of Sensory, but Not Sympathetic Neurons [PDF]

, 1993
Little is known about the signal transduction mechanisms involved in the response to neurotrophins and other neurotrophic factors in neurons, beyond the activation of the tyrosine kinase activity of the neurotrophin receptors belonging to the trk family.
Barde, Y. A., Borasio, Gian Domenico, Heumann, R., Markus, A., Wittinghofer, A.   +4 more
core   +3 more sources