Cell adhesion molecules and their roles and regulation in the immune and tumor microenvironment

H Harjunpää, M Llort Asens, C Guenther… - Frontiers in …, 2019 - frontiersin.org
The immune system and cancer have a complex relationship with the immune system
playing a dual role in tumor development. The effector cells of the immune system can …

Molecular mechanisms of leukocyte β2 integrin activation

L Wen, M Moser, K Ley - Blood, The Journal of the American …, 2022 - ashpublications.org
Integrins are transmembrane receptors that mediate cell-cell and cell-extracellular matrix
adhesion. Although all integrins can undergo activation (affinity change for ligands), the …

Talin-1 is the principal platelet Rap1 effector of integrin activation

F Lagarrigue, DS Paul, AR Gingras… - Blood, The Journal …, 2020 - ashpublications.org
Abstract Ras-related protein 1 (Rap1) is a major convergence point of the platelet-signaling
pathways that result in talin-1 binding to the integrin β cytoplasmic domain and consequent …

Somatic RAP1B gain-of-function variant underlies isolated thrombocytopenia and immunodeficiency

M Benavides-Nieto, F Adam, E Martin… - The Journal of Clinical …, 2024 - jci.org
The ubiquitously expressed small GTPase Ras-related protein 1B (RAP1B) acts as a
molecular switch that regulates cell signaling, cytoskeletal remodeling, and cell trafficking …

Direct Rap1/Talin1 interaction regulates platelet and neutrophil integrin activity in mice

T Bromberger, S Klapproth, I Rohwedder… - Blood, The Journal …, 2018 - ashpublications.org
Targeting Talin1 to the plasma membrane is a crucial step in integrin activation, which in
leukocytes is mediated by a Rap1/RIAM/Talin1 pathway, whereas in platelets, it is RIAM …

[HTML][HTML] Glucocorticoids regulate thrombopoiesis by remodeling the megakaryocyte transcriptome

M Grodzielski, JA Cidlowski - Journal of Thrombosis and Haemostasis, 2023 - Elsevier
Background Glucocorticoids are widely known for their immunomodulatory action. Their
synthetic analogs are used to treat several autoimmune diseases, including immune …

Rap1 binding and a lipid-dependent helix in talin F1 domain promote integrin activation in tandem

AR Gingras, F Lagarrigue, MN Cuevas… - Journal of Cell …, 2019 - rupress.org
Rap1 GTPases bind effectors, such as RIAM, to enable talin1 to induce integrin activation. In
addition, Rap1 binds directly to the talin1 F0 domain (F0); however, this interaction makes a …

Rap1 and membrane lipids cooperatively recruit talin to trigger integrin activation

T Bromberger, L Zhu, S Klapproth, J Qin… - Journal of cell …, 2019 - journals.biologists.com
Recruitment and tethering of talin to the plasma membrane initiate the process of integrin
activation. Multiple factors including the Rap1 proteins, RIAM (also known as APBB1IP) and …

Are parallel proliferation pathways redundant?

R Nussinov, CJ Tsai, H Jang - Trends in biochemical sciences, 2020 - cell.com
Are the receptor tyrosine kinase (RTK) and JAK-STAT-driven proliferation pathways
'parallel'or 'redundant'? And what about those of K-Ras4B versus N-Ras?'Parallel' …

[HTML][HTML] Protease-activated receptors and glycoprotein VI cooperatively drive the platelet component in thromboelastography

T Rudran, S Antoniak, MJ Flick, MH Ginsberg… - Journal of Thrombosis …, 2023 - Elsevier
Background Thromboelastography (TEG) is used for real-time determination of hemostatic
status in patients with acute risk of bleeding. Thrombin is thought to drive clotting in TEG …