Results 41 to 50 of about 15,352 (140)

The small GTP-binding protein rac regulates growth factor-induced membrane ruffling

Trends in Cell Biology, 1992
The function of rac, a ras-related GTP-binding protein, was investigated in fibroblasts by microinjection. In confluent serum-starved Swiss 3T3 cells, rac1 rapidly stimulated actin filament accumulation at the plasma membrane, forming membrane ruffles.
A J, Ridley, H F, Paterson, C L, Johnston, D, Diekmann, A, Hall   +4 more
openaire   +2 more sources

The Small GTP-binding Protein Rac Promotes the Dissociation of Gelsolin from Actin Filaments in Neutrophils [PDF]

Journal of Biological Chemistry, 1998
Gelsolin is an actin filament-capping protein that has been shown to play a key role in cell migration. Here we have studied the involvement of phosphoinositide 3-kinase (PI 3-kinase) and GTP-binding proteins (G-proteins) in the regulation of gelsolin-actin interactions in neutrophils.
openaire   +3 more sources

Guanine nucleotide exchange regulates membrane translocation of Rac/Rho GTP-binding proteins.

Journal of Biological Chemistry, 1994
GTP-binding proteins of the Rho family are maintained as cytosolic complexes with RhoGDI in resting cells, but are released and translocate to the membrane during the course of cell activation. Membrane association of Rac/Rho/CDC42 was specifically induced by GTP analogs and required a heat- and trypsin-labile membrane component.
G M, Bokoch, B P, Bohl, T H, Chuang
openaire   +2 more sources

The small GTP-binding proteins Rho and Rac induce T cell adhesion to the mucosal addressin MAdCAM-1 in a hierarchical fashion [PDF]

European Journal of Immunology, 1999
Here we report that an activator (AIF4-) of heterotrimeric GTP-binding proteins (G-proteins) and inhibitors (lovastatin and C3 exoenzyme) of small GTP-binding proteins regulate the induction of alpha4beta7-mediated adhesion of TK-1 T lymphoma cells (alpha4+beta7+beta1-) to the mucosal addressin cell adhesion molecule MAdCAM-1.
W V, Zhang, Y, Yang, R W, Berg, E, Leung, G W, Krissansen   +4 more
openaire   +2 more sources

Small GTP-Binding Protein Rac Is an Essential Mediator of Vascular Endothelial Growth Factor-Induced Endothelial Fenestrations and Vascular Permeability [PDF]

Circulation, 2003
Background— Vascular endothelial growth factor/vascular permeability factor (VEGF/VPF) induces both angiogenesis and vascular permeability. Although its angiogenic activity has been well characterized, the signaling pathways of VEGF-induced permeability remain poorly understood.
Anna, Eriksson, Renhai, Cao, Joy, Roy, Katerina, Tritsaris, Claes, Wahlestedt, Steen, Dissing, Johan, Thyberg, Yihai, Cao   +7 more
openaire   +3 more sources

Unraveling the Molecular Mechanisms Underlying Spontaneous Multipolar Mitosis Through CIN‐seq

Advanced Science, EarlyView.
Multipolar mitosis, a hallmark of chromosomal instability (CIN), drives tumor heterogeneity but is challenging to study in live cells. Using CIN‐seq, a single‐cell multiomics method, we profiled rare CIN events and identified mechanisms associated with viable multipolar mitosis, including PTEN attenuation, Rho GTPase‐driven cytokinesis failure, and ...
Pin‐Rui Su, Ting‐Chun Chou, Maria Teresa López‐Cascales, Junfeng Huang, Tsai‐Ying Chen, Sjoukje van Wieren, Chan Li, Cecile Beerens, Li You, Jelle Storteboom, Miao‐Ping Chien   +10 more
wiley   +1 more source

Tumor‐Derived Alpha‐1 Antitrypsin Promotes Liver Metastasis of Colorectal Cancer Through the Neutrophil Extracellular Traps–CCDC25 Pathway

Advanced Science, EarlyView.
ABSTRACT Liver metastasis is a leading cause of mortality in colorectal cancer (CRC), where the inflammatory tumor microenvironment, specifically neutrophil infiltration, significantly promotes metastatic colonization. This study reveals a pro‐metastatic role for alpha‐1 antitrypsin (A1AT) in CRC liver metastasis via a dual mechanism involving ...
Qian Fei, Chunning Li, Lei Zhan, Xiaoyan Li, Yan Hui, Yue Jin, Jing Zhang, Lu Yang, Xin Sun, Xiaoxi Li, Qian Dong, Jingdong Zhang   +11 more
wiley   +1 more source

Advances in GPCRs Associated With Wnt Signaling Within the Auditory System

Medicine Bulletin, EarlyView.
ABSTRACT G protein‐coupled receptors (GPCRs) that interact with the Wnt signaling pathway are pivotal for auditory system homeostasis, as they orchestrate inner ear development, hair cell (HC) regeneration, and hearing preservation. Frizzled (FZD) receptors, the core Wnt‐related GPCRs, bind Wnt ligands and co‐receptors (e.g., LRP5/6) to activate both ...
Liang Wang, Changling Xu, Jiangang Fan, Renjie Chai   +3 more
wiley   +1 more source

Data from Characterization of Novel Derivatives of MBQ-167, an Inhibitor of the GTP-binding Proteins Rac/Cdc42

, 2023
<div><p>Rac and Cdc42, are homologous GTPases that regulate cell migration, invasion, and cell-cycle progression; thus, representing key targets for metastasis therapy. We previously reported on the efficacy of MBQ-167, which blocks both Rac1 and Cdc42 in breast cancer cells and mouse models of metastasis.
Suranganie Dharmawardhane, Cornelis P. Vlaar, Eliud Hernandez O'Farril, Marcelo G. Kazanietz, Mariana Cooke, Luis D. Borrero-Garcia, Tatiana Matos Gascot, Maria del Mar Maldonado, Ailed Cruz-Collazo, Julia I. Medina   +9 more
openaire   +1 more source

Baicalein Sensitizes Radioresistant BT549 and MCF7‐R Breast Cancer Cells by Modulating Rac1 Signaling

Phytotherapy Research, EarlyView.
ABSTRACT Radioresistance remains a key barrier in breast cancer (BC) treatment. Baicalein, a flavonoid from Scutellaria baicalensis, has shown potential to enhance radiosensitivity. This study investigates its efficacy and mechanism in radioresistant BC models. Radioresistant BC cell models were established via fractionated irradiation and validated by
Zitong Zhao, Zhangyun Li, Quanzhou Peng, Shuqun Zhang   +3 more
wiley   +1 more source