SLC29A1 and SLC29A2 are human nicotinamide cell membrane transporters.

Nicotinamide (NAM), a main precursor of NAD+, is essential for cellular fuel respiration, energy production, and other cellular processes. Transporters for other precursors of NAD+ such as nicotinic acid and nicotinamide mononucleotide (NMN) have been identified, but the cellular transporter of nicotinamide has not been elucidated. Here, we demonstrate that equilibrative nucleoside transporter 1 and 2 (ENT1 and 2, encoded by SLC29A1 and 2) drive cellular nicotinamide uptake and establish nicotinamide metabolism homeostasis.

Wheat glutenin allele 1Ax2∗ improves dough and bread quality without compromising yield.

High yield and good quality are two predominant objectives of most of the wheat breeding programs. Modulating HMW-GS composition is an effective approach to improve grain quality without yield penalty. In this study, we first analyzed the background similarity of three near-isogenic lines (NILs) with 1Ax-null, 1Ax1 or 1Ax2∗ alleles in the background of cultivar Xiaoyan-22 at the protein and DNA levels.

Multi-signal fluorescent probe for simultaneous differentiation and imaging of Hg, Cys, Hcy, and GSH in living cells and zebrafish.

The Mercury (II) ion (Hg²⁺) is a toxic heavy metal that threatens biological systems by inducing oxidative stress and disrupting the redox balance. Biothiols such as cysteine (Cys), homocysteine (Hcy), and glutathione (GSH) are critical in maintaining redox homeostasis and are implicated in numerous physiological and pathological processes. Understanding the complex interactions between Hg²⁺ and biothiols requires molecular tools capable of simultaneous detection.

Ultrasound-Activated Copper Matrix Nanosonosensitizer for Cuproptosis-Based Synergy Therapy.

Cuproptosis exhibits enormous application prospects in treatment. However, cuproptosis-based therapy is impeded by the limited intracellular copper ions, the nonspecific delivery, uncontrollable release, and chelation of endogenous overproduced glutathione (GSH). In this work, an ultrasound-triggered nanosonosensitizer (p-TiO-Cu(I)) was constructed for Cu(I) delivery, on-demand release, GSH consumption, and deeper tissue response.

An explainable transformer model integrating PET and tabular data for histologic grading and prognosis of follicular lymphoma: a multi-institutional digital biopsy study.

Background: Pathological grade is a critical determinant of clinical outcomes and decision-making of follicular lymphoma (FL). This study aimed to develop a deep learning model as a digital biopsy for the non-invasive identification of FL grade.

Methods: This study retrospectively included 513 FL patients from five independent hospital centers, randomly divided into training, internal validation, and external validation cohorts.