Symmetry Engineering in a 2D Transition Metal Enables Reconfigurable P- and N-Type FETs.

Two-dimensional (2D) transition metals enable the elimination of metal-induced gap states and Fermi-level pinning in field-effect transistors (FETs), offering an advantage over conventional metal contacts. However, transition metal substrates typically exhibit nonoriented behaviors, leading to the inability to achieve monolingual responses with P- or N-type semiconductors. Here we devise symmetry engineering in an oxidized architectural MXene, termed OXene, which implements the exploiting and coupling of additional out-of-plane electron conduction and built-in polar structures.

Overexpression of miR-221 stimulates proliferation of rat neural stem cell with activating Phosphatase and tensin homolog/protein kinase B signaling pathway.

Neural stem cells (NSCs) are self-renewing, multipotent cells, and remain in our brains throughout life. They could be activated by brain damage and involved in the central nervous system (CNS) repair and motor functional recovery. Previous research demonstrated that miR-221 could regulate proliferation, differentiation, and survival.

Compressive force regulates ephrinB2 and EphB4 in osteoblasts and osteoclasts contributing to alveolar bone resorption during experimental tooth movement.

Objective: To investigate the involvement of ephrinB2 in periodontal tissue remodeling in compression areas during orthodontic tooth movement and the effects of compressive force on EphB4 and ephrinB2 expression in osteoblasts and osteoclasts.

Methods: A rat model of experimental tooth movement was established to examine the histological changes and the localization of ephrinB2 in compressed periodontal tissues during experimental tooth movement. RAW264.