Results 141 to 150 of about 261,647 (345)

Rho Gtpases [PDF]

open access: yesThe Journal of Cell Biology, 2000
The composition of the extracellular matrix (ECM) surrounding cells is key to their behavior: it modulates their ability to proliferate, differentiate, and migrate (Giancotti and Ruoslahti 1999). ECM components can signal directly to cells through transmembrane receptors such as integrins, and can also present soluble cytokines and growth factors to ...
openaire   +3 more sources

Small Extracellular Vesicles Orchestrate Cisplatin‐Induced Ototoxicity: Potential Biomarker and Targets Discovery

open access: yesAdvanced Science, EarlyView.
Cisplatin causes reactive oxygen species accumulation, leading to apoptosis and inflammation in cochlear hair cells. Small extracellular vesicles primarily derived from the damaged hair cells likely contribute to cisplatin‐induced ototoxicity, carrying a variety of microRNAs and proteins.
Jingru Ai   +14 more
wiley   +1 more source

Mechanistic Foundations of KRAS‐Driven Tumor Ecosystems: Integrating Crosstalk among Immune, Metabolic, Microbial, and Stromal Microenvironment

open access: yesAdvanced Science, EarlyView.
KRAS mutations dynamically remodel the tumor microenvironment (TME), fostering immunosuppression, metabolic symbiosis, and stromal plasticity. This review dissects how oncogenic KRAS variants sculpt TME networks and explores actionable vulnerabilities. Emerging strategies combining KRAS inhibitors and TME‐editing approaches offer potential to dismantle
Jiayao Ma   +9 more
wiley   +1 more source

A Rho-actin signaling pathway shapes cell wall boundaries in Arabidopsis xylem vessels

open access: yesNature Communications, 2019
Cell wall pits allow movement of water between xylem vessels and are formed via Rho-GTPase mediated signaling that leads to local microtubule disassembly. Here, Sugiyama et al.
Yuki Sugiyama   +6 more
doaj   +1 more source

Substrate binding disrupts dimerization and induces nucleotide exchange of the chloroplast GTPase Toc33

open access: yes, 2011
GTPases act as molecular switches to control many cellular processes, including signalling, protein translation and targeting. Switch activity can be regulated by external effector proteins or intrinsic properties, such as dimerization.
Anja Höfle   +45 more
core   +3 more sources

Adiponectin Assists Thrombopoietic Agents in ITP Treatment by Enhancing Myosin‐9/Rab6A‐Mediated Trafficking of c‐Mpl in MKs

open access: yesAdvanced Science, EarlyView.
This study revealed that adiponectin facilitates the therapeutic efficiency of thrombopoietic agents by stimulating the membrane trafficking of c‐Mpl in MKs, which provides a point for ITP therapy. Moreover, a novel c‐Mpl trafficking mechanism based on the Myosin‐9/Rab6A complex is constructed. These findings provide new insights into the applicability
Xin Zhao   +8 more
wiley   +1 more source

Loss of STARD7 Triggers Metabolic Reprogramming and Cell Cycle Arrest in Breast Cancer

open access: yesAdvanced Science, EarlyView.
Breast cancer cells undergo metabolic and transcriptomic reprogramming to support aberrant cell proliferation. Their mitochondria rely on the transfer of phosphatidylcholine from the endoplasmic reticulum to their membranes by STARD7, a candidate upregulated in breast cancer, to be functional.
Ewelina Dondajewska   +18 more
wiley   +1 more source

Tyrosyl phosphorylation of KRAS stalls GTPase cycle via alteration of switch I and II conformation

open access: yesNature Communications, 2019
Deregulation of the RAS GTPase cycle due to mutations in RAS genes is commonly associated with cancer development. Here authors use NMR and mass spectrometry to shows that KRAS phosphorylation via Src alters the conformation of switch I and II regions ...
Yoshihito Kano   +18 more
doaj   +1 more source

Open and cut: allosteric motion and membrane fission by dynamin superfamily proteins. [PDF]

open access: yes, 2019
Cells have evolved diverse protein-based machinery to reshape, cut, or fuse their membrane-delimited compartments. Dynamin superfamily proteins are principal components of this machinery and use their ability to hydrolyze GTP and to polymerize into ...
Frost, Adam, Kalia, Raghav
core  

Splicing Shift of RAC1 Accelerates Tumorigenesis and Defines a Potent Therapeutic Target in Lung Cancer

open access: yesAdvanced Science, EarlyView.
Dysregulated RNA splicing is an underappreciated molecular feature of cancer. By integrating murine and cellular models with patient specimens of lung adenocarcinoma, this study demonstrates that RAC1B, rather than RAC1A isoform, promotes tumorigenesis and presents a potent therapeutic target for lung cancer. Mechanistically, RAC1B preferentially binds
Yueren Yan   +19 more
wiley   +1 more source

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