TY  - JOUR
A1  - Garitano-Trojaola, Andoni
A1  - Sancho, Ana
A1  - Götz, Ralph
A1  - Eiring, Patrick
A1  - Walz, Susanne
A1  - Jetani, Hardikkumar
A1  - Gil-Pulido, Jesus
A1  - Da Via, Matteo Claudio
A1  - Teufel, Eva
A1  - Rhodes, Nadine
A1  - Haertle, Larissa
A1  - Arellano-Viera, Estibaliz
A1  - Tibes, Raoul
A1  - Rosenwald, Andreas
A1  - Rasche, Leo
A1  - Hudecek, Michael
A1  - Sauer, Markus
A1  - Groll, Jürgen
A1  - Einsele, Hermann
A1  - Kraus, Sabrina
A1  - Kortüm, Martin K.
T1  - Actin cytoskeleton deregulation confers midostaurin resistance in FLT3-mutant acute myeloid leukemia
JF  - Communications Biology
N2  - The presence of FMS-like tyrosine kinase 3-internal tandem duplication (FLT3-ITD) is one of the most frequent mutations in acute myeloid leukemia (AML) and is associated with an unfavorable prognosis. FLT3 inhibitors, such as midostaurin, are used clinically but fail to entirely eradicate FLT3-ITD+AML. This study introduces a new perspective and highlights the impact of RAC1-dependent actin cytoskeleton remodeling on resistance to midostaurin in AML. RAC1 hyperactivation leads resistance via hyperphosphorylation of the positive regulator of actin polymerization N-WASP and antiapoptotic BCL-2. RAC1/N-WASP, through ARP2/3 complex activation, increases the number of actin filaments, cell stiffness and adhesion forces to mesenchymal stromal cells (MSCs) being identified as a biomarker of resistance. Midostaurin resistance can be overcome by a combination of midostaruin, the BCL-2 inhibitor venetoclax and the RAC1 inhibitor Eht1864 in midostaurin-resistant AML cell lines and primary samples, providing the first evidence of a potential new treatment approach to eradicate FLT3-ITD+AML. Garitano-Trojaola et al. used a combination of human acute myeloid leukemia (AML) cell lines and primary samples to show that RAC1-dependent actin cytoskeleton remodeling through BCL2 family plays a key role in resistance to the FLT3 inhibitor, Midostaurin in AML. They showed that by targeting RAC1 and BCL2, Midostaurin resistance was diminished, which potentially paves the way for an innovate treatment approach for FLT3 mutant AML.
KW  - actin
KW  - acute myeloid leukaemia
Y1  - 2021
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-260709
VL  - 4
IS  - 1
ER  - 
TY  - JOUR
A1  - Schwaab, Bernhard
A1  - Bjarnason-Wehrens, Birna
A1  - Meng, Karin
A1  - Albus, Christian
A1  - Salzwedel, Annett
A1  - Schmid, Jean-Paul
A1  - Benzer, Werner
A1  - Metz, Matthes
A1  - Jensen, Katrin
A1  - Rauch, Bernhard
A1  - Bönner, Gerd
A1  - Brzoska, Patrick
A1  - Buhr-Schinner, Heike
A1  - Charrier, Albrecht
A1  - Cordes, Carsten
A1  - Dörr, Gesine
A1  - Eichler, Sarah
A1  - Exner, Anne-Kathrin
A1  - Fromm, Bernd
A1  - Gielen, Stephan
A1  - Glatz, Johannes
A1  - Gohlke, Helmut
A1  - Grilli, Maurizio
A1  - Gysan, Detlef
A1  - Härtel, Ursula
A1  - Hahmann, Harry
A1  - Herrmann-Lingen, Christoph
A1  - Karger, Gabriele
A1  - Karoff, Marthin
A1  - Kiwus, Ulrich
A1  - Knoglinger, Ernst
A1  - Krusch, Christian-Wolfgang
A1  - Langheim, Eike
A1  - Mann, Johannes
A1  - Max, Regina
A1  - Metzendorf, Maria-Inti
A1  - Nebel, Roland
A1  - Niebauer, Josef
A1  - Predel, Hans-Georg
A1  - Preßler, Axel
A1  - Razum, Oliver
A1  - Reiss, Nils
A1  - Saure, Daniel
A1  - von Schacky, Clemens
A1  - Schütt, Morten
A1  - Schultz, Konrad
A1  - Skoda, Eva-Maria
A1  - Steube, Diethard
A1  - Streibelt, Marco
A1  - Stüttgen, Martin
A1  - Stüttgen, Michaela
A1  - Teufel, Martin
A1  - Tschanz, Hansueli
A1  - Völler, Heinz
A1  - Vogel, Heiner
A1  - Westphal, Ronja
T1  - Cardiac rehabilitation in German speaking countries of Europe — evidence-based guidelines from Germany, Austria and Switzerland LLKardReha-DACH — part 2
JF  - Journal of Clinical Medicine
N2  - Background: Scientific guidelines have been developed to update and harmonize exercise based cardiac rehabilitation (ebCR) in German speaking countries. Key recommendations for ebCR indications have recently been published in part 1 of this journal. The present part 2 updates the evidence with respect to contents and delivery of ebCR in clinical practice, focusing on exercise training (ET), psychological interventions (PI), patient education (PE). In addition, special patients' groups and new developments, such as telemedical (Tele) or home-based ebCR, are discussed as well. Methods: Generation of evidence and search of literature have been described in part 1. Results: Well documented evidence confirms the prognostic significance of ET in patients with coronary artery disease. Positive clinical effects of ET are described in patients with congestive heart failure, heart valve surgery or intervention, adults with congenital heart disease, and peripheral arterial disease. Specific recommendations for risk stratification and adequate exercise prescription for continuous-, interval-, and strength training are given in detail. PI when added to ebCR did not show significant positive effects in general. There was a positive trend towards reduction in depressive symptoms for “distress management” and “lifestyle changes”. PE is able to increase patients’ knowledge and motivation, as well as behavior changes, regarding physical activity, dietary habits, and smoking cessation. The evidence for distinct ebCR programs in special patients’ groups is less clear. Studies on Tele-CR predominantly included low-risk patients. Hence, it is questionable, whether clinical results derived from studies in conventional ebCR may be transferred to Tele-CR. Conclusions: ET is the cornerstone of ebCR. Additional PI should be included, adjusted to the needs of the individual patient. PE is able to promote patients self-management, empowerment, and motivation. Diversity-sensitive structures should be established to interact with the needs of special patient groups and gender issues. Tele-CR should be further investigated as a valuable tool to implement ebCR more widely and effectively.
KW  - cardiac rehabilitation
KW  - scientific guidelines
KW  - secondary prevention
KW  - physical activity
KW  - exercise training
KW  - psychological interventions
KW  - education
KW  - gender
KW  - frailty
KW  - migration
KW  - old patients
KW  - young patients
KW  - tele-medicine
KW  - home-based-rehabilitation
Y1  - 2021
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-242645
SN  - 2077-0383
VL  - 10
IS  - 14
ER  -