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The article focuses on the study of the In situ stiffness manipulation using elegant curved origami. It mentions that the capability of stiffness manipulation for materials and structures is essential for tuning motion, saving energy, and delivering high power; and high-efficiency in situ stiffness manipulation has not yet been successfully achieved despite many studies from different perspectives.

Myelodysplastic syndrome (MDS) is a group of clonal hematopoietic neoplasms originating from hematopoietic stem progenitor cells (HSPCs). We previously identified frequent roundabout guidance receptor 1 (ROBO1) mutations in patients with MDS, while the exact role of ROBO1 in hematopoiesis remains poorly delineated. Here, we report that ROBO1 deficiency confers MDS-like disease with anemia and multilineage dysplasia in mice and predicts poor prognosis in patients with MDS. More specifically, Robo1 deficiency impairs HSPC homeostasis and disrupts HSPC pool, especially the reduction of megakaryocyte erythroid progenitors, which causes a blockage in the early stages of erythropoiesis in mice. Mechanistically, transcriptional profiling indicates that Cdc42, a member of the Rho-guanosine triphosphatase family, acts as a downstream target gene for Robo1 in HSPCs. Overexpression of Cdc42 partially restores the self-renewal and erythropoiesis of HSPCs in Robo1-deficient mice. Collectively, our result implicates the essential role of ROBO1 in maintaining HSPC homeostasis and erythropoiesis via CDC42. [ABSTRACT FROM AUTHOR]

Because of its small size (70 kilodalton) and large content of structural disorder (>50%), the human growth hormone receptor (hGHR) falls between the cracks of conventional high-resolution structural biology methods. Here, we study the structure of the full-length hGHR in nanodiscs with small-angle x-ray scattering (SAXS) as the foundation. We develop an approach that combines SAXS, x-ray diffraction, and NMR spectroscopy data obtained on individual domains and integrate these through molecular dynamics simulations to interpret SAXS data on the full-length hGHR in nanodiscs. The hGHR domains reorient freely, resulting in a broad structural ensemble, emphasizing the need to take an ensemble view on signaling of relevance to disease states. The structure provides the first experimental model of any full-length cytokine receptor in a lipid membrane and exemplifies how integrating experimental data from several techniques computationally may access structures of membrane proteins with long, disordered regions, a widespread phenomenon in biology. [ABSTRACT FROM AUTHOR]

The article discusses the critical role of DNA methylation in the vascular pathology of pulmonary hypertension (PH). Topics include a study which showed that global DNA methylation in the lungs of PH rat models following monocrotaline administration or hypobaric hypoxia exposure, the up-regulation of DNA methyl-transferase 3B (DNMT3B), and the migration of pulmonary artery smooth muscle cells (PASMC).

The article presents a study on how retinoid X receptor alpha is a spatiotemporally predominant therapeutic target for anthracycline-induced cardiotoxicity. Topics discussed include unrecognized spatiotemporally-predominant mechanism that shall inform future translational efforts; Therapeutic strategies based on these noncardiomyocytes, and remain underexplored; and elucidate the disease mechanisms and to search for potential therapeutic targets, several genetic strategies.

The article discusses the research on quantum oscillations in ultraquantum topological materials and tackles the discrete scale invariance (DSI) of single crystal.