Acta Biochimica et Biophysica Sinica•2025•DOI: 10.3724/abbs.2024147
The subcellular localization of RNA is critical to a variety of physiological and pathological processes. Dissecting the spatiotemporal regulation of the transcriptome is key to understanding cell function and fate. However, it remains challenging to effectively enrich and catalogue RNAs from various subcellular structures using traditional approaches. In recent years, proximity labeling has emerged as an alternative strategy for efficient isolation and purification of RNA from these intricate subcellular compartments. This review focuses on examining RNA-related proximity labeling tools and exploring their application in elucidating the spatiotemporal regulation of RNA at the subcellular level.
Chinese Traditional and Herbal Drugs•2026•DOI: 10.7501/j.issn.0253-2670.2026.16.20261606
This study systematically investigated the dynamic changes in volatile components of Sichuan-origin Zingiberis Rhizoma Recens (ZRR) and its processed products—Ganjiang (ZR), Paojiang (ZRP), and Jiangtan (ZRC)—using electronic bionic sensing, gas chromatography-mass spectrometry (GC-MS), and molecular dynamics simulations. Electronic tongue analysis revealed significant taste differences among samples. GC-MS identified 15 common chemical constituents across all products, with 14 volatile compounds unique to ZRR, 8 to ZR, 1 to ZRP, and 5 to ZRC, predominantly terpenoids. Processing decreased monoterpene content while increasing most sesquiterpenes; elemol and curcumenol converted to β-elemene and α-curcumene. Molecular docking and dynamics simulations demonstrated that sesquiterpenes exhibited superior binding affinity to the TRPV1 pungent receptor compared to monoterpenes. β-Eudesmol and curcumenol formed stable hydrogen-bond networks with LEU-1383 and ILE-1441 residues of the 8GFA protein, governed primarily by van der Waals forces, electrostatics, and hydrogen bonding. These findings indicate that the enhanced pungency after processing is attributable to sesquiterpenoids, providing a molecular basis for the altered medicinal properties of processed ginger. The study acknowledges limitations regarding unclear transformation pathways and unexamined olfactory characteristics, suggesting future integration of metabolomics, cellular assays, and electronic nose technology.
Chinese Traditional and Herbal Drugs•2026•DOI: 10.7501/j.issn.0253-2670.2026.16.20261609
Puerarin, a principal isoflavone from Pueraria lobata, exhibits anti-migraine activity but suffers from poor oral bioavailability and limited blood-brain barrier penetration. This study reports a puerarin-loaded chitosan-modified β-cyclodextrin supramolecular gel (Pur@CS-β-CD Gel) for intranasal delivery. Formulation optimization employed single-factor experiments and Box-Behnken design-response surface methodology (BBD-RSM). The optimal formulation comprised CS-β-CD and sodium carboxymethylcellulose at a mass ratio of 1:9, total polymer concentration 2.6%, and puerarin 40 mg. The resulting gel displayed a three-dimensional porous architecture, pH 6.5, favorable stability, and a biphasic in vitro release profile: 82.75% cumulative release within 4 h followed by sustained release. No nasal mucosal irritation was observed. In a chronic migraine rat model induced by nitroglycerin, Pur@CS-β-CD Gel significantly ameliorated behavioral deficits, reduced brain levels of calcitonin gene-related peptide (CGRP) and interleukin-1β (IL-1β), and elevated 5-hydroxytryptamine (5-HT). These pharmacodynamic outcomes are consistent with interruption of trigeminovascular CGRP release, modulation of serotonergic neurotransmission, and attenuation of IL-1β-mediated nociceptive sensitization. The study acknowledges limitations: the animal model only partially recapitulates clinical migraine heterogeneity; long-term safety and immunogenicity of repeated dosing remain unassessed; and direct quantification of brain puerarin concentration was not performed, leaving brain-targeting efficiency unproven. Nonetheless, the optimized gel offers a feasible, non-invasive nasal delivery platform with preliminary anti-migraine efficacy, warranting further pharmacokinetic and mechanistic validation.
Chinese Journal of Tissue Engineering Research•2026•DOI: 10.12307/2026.21423
BACKGROUND: Current therapies for musculoskeletal degenerative diseases merely alleviate symptoms with significant adverse effects. As a traditional Chinese medicine, active ingredients of ginseng exhibit protective effects on bone and muscle through multi-target regulation of signaling pathways, and breakthroughs have been made in mechanism research in recent years. OBJECTIVE: To provide a systematical review of the latest molecular mechanisms of active ingredients of ginseng (ginsenosides, polysaccharides, and peptides) in preventing and treating musculoskeletal degenerative diseases via key signaling pathways, providing a basis for targeted drug development. METHODS: A systematic search was performed in multiple databases, including PubMed, Web of Science, Embase, CNKI, Wanfang, and VIP, with the search period from inception to April 2025. Chinese search terms included "musculoskeletal diseases, osteoporosis, osteoarthritis, intervertebral disc herniation, sarcopenia, ginsenosides, ginseng polysaccharides, ginseng peptides, signaling pathways"; English search terms included "musculoskeletal degenerative diseases, osteoporosis, osteoarthritis, intervertebral disc degeneration, sarcopenia, ginsenosides, ginseng polysaccharides, ginseng peptides, signaling pathways". Finally, 75 eligible articles were included. RESULTS AND CONCLUSION: (1) Ginsenosides (e.g., Rg3, Rh4, Rc): target the karyopherin α2-nuclear factor-κB axis to inhibit osteoclast differentiation and reduce bone resorption; activate the sirtuin 1 pathway to enhance mitochondrial biogenesis and delay sarcopenia; regulate Yes-associated protein 1/transcriptional coactivator and p38 mitogen-activated protein kinase to alleviate intervertebral disc degeneration. (2) Polysaccharides: processing techniques affect immunomodulatory activity, inhibiting inflammation via the mitogen-activated protein kinase/nuclear factor-κB pathway. (3) Peptides: activate the NAD+/sirtuin 1/peroxisome proliferator-activated receptor γ coactivator 1α axis to improve mitochondrial function. These findings suggest that ginseng exerts synergistic regulation of bone metabolism balance, inhibition of cartilage degradation, and delay of muscle aging through a "multi-component, multi-target" mechanism, but challenges remain regarding low bioavailability and lack of large-scale clinical trials for translation.