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Macrophage infiltration around lipotoxic tubular epithelial cells (TECs) is a hallmark of diabetic nephropathy (DN). However, how these two types of cells communicate remains obscure. We previously demonstrated that LRG1 was elevated in the process of kidney injury. Here, we demonstrated that macrophage-derived, LRG1-enriched extracellular vesicles (EVs) exacerbated DN. We induced an experimental T2DM mouse model with a HFD diet for four months. Renal primary epithelial cells and macrophage-derived EVs were isolated from T2D mice by differential ultracentrifugation. To investigate whether lipotoxic TEC-derived EV (EV ) activate macrophages, mouse bone marrow-derived macrophages (BMDMs) were incubated with EV . To investigate whether activated macrophage-derived EVs (EV ) induce lipotoxic TEC apoptosis, EV were cocultured with primary renal tubular epithelial cells. Subsequently, we evaluated the effect of LRG1 in EV by investigating the apoptosis mechanism. We demonstrated that incubation of primary TECs of DN or HK-2 mTECs with lysophosphatidyl choline (LPC) increased the release of EV . Interestingly, TEC-derived EV activated an inflammatory phenotype in macrophages and induced the release of macrophage-derived EV . Furthermore, EV could induce apoptosis in TECs injured by LPC. Importantly, we found that leucine-rich α-2-glycoprotein 1 (LRG1)-enriched EV activated macrophages via a TGFβR1-dependent process and that tumor necrosis factor-related apoptosis-inducing ligand (TRAIL)-enriched EV induced apoptosis in injured TECs via a death receptor 5 (DR5)-dependent process. Our findings indicated a novel cell communication mechanism between tubular epithelial cells and macrophages in DN, which could be a potential therapeutic target.

We discuss the possible existence of the fully-heavy tetraquarks. We calculate the ground-state energy of the \\[bb {\\bar{b}} {\\bar{b}}\\] bound state, where b stands for the bottom quark, in a nonrelativistic effective field theory framework with one-gluon-exchange (OGE) color Coulomb interaction, and in a relativized diquark model characterized by OGE plus a confining potential. Our analysis advocates the existence of uni-flavor heavy four-quark bound states. The ground state \\[bb{\\bar{b}}{\\bar{b}}\\] tetraquark mass is predicted to be \\[(18.72\\pm 0.02)\\] GeV. Mass inequality relations among the lowest \\[QQ\\bar{Q}\\bar{Q}\\] states, where \\[Q\\in \\{c, b\\}\\], and the corresponding heavy quarkonia are presented, which give the upper limit on the mass of ground state \\[QQ\\bar{Q}\\bar{Q}\\]. The possible decays of the lowest \\[bb\\bar{b}\\bar{b}\\] are highlighted, which might provide useful references in the search for them in ongoing LHC experiments, and its width is estimated to be a few tens of MeV.

Advancing perovskite solar cell technologies toward their theoretical power conversion efficiency (PCE) requires delicate control over the carrier dynamics throughout the entire device. By controlling the formation of the perovskite layer and careful choices of other materials, we suppressed carrier recombination in the absorber, facilitated carrier injection into the carrier transport layers, and maintained good carrier extraction at the electrodes. When measured via reverse bias scan, cell PCE is typically boosted to 16.6% on average, with the highest efficiency of ∼19.3% in a planar geometry without antireflective coating. The fabrication of our perovskite solar cells was conducted in air and from solution at low temperatures, which should simplify manufacturing of large-area perovskite devices that are inexpensive and perform at high levels.

Composite hydrogels with improved mechanical and chemical properties can be formed by non-covalently decorating the nanofibrillar structures formed by the self-assembly of peptides with fucoidan. Nevertheless, the precise interactions, and the electrochemical and thermodynamic stability of these composite materials have not been determined. Here, we present a thermodynamic analysis of the interacting forces that drive the formation of a composite fucoidan/9-fluorenylmethoxycarbonyl-phenylalanine-arginine-glycine-aspartic acid-phenylalanine (Fmoc-FRGDF) hydrogel. The results showed that the co-assembly of fucoidan and Fmoc-FRGDF was spontaneous and exothermic. The melting point increased from 87.0 °C to 107.7 °C for Fmoc-FRGDF with 8 mg/mL of added fucoidan. A complex network of hydrogen bonds formed between the molecules of Fmoc-FRGDF, and electrostatic, hydrogen bond, and van der Waals interactions were the main interactions driving the co-assembly of fucoidan and Fmoc-FRGDF. Furthermore, the sulfate group of fucoidan formed a strong salt bridge with the arginine of Fmoc-FRGDF. This study provides useful biomedical engineering design parameters for the inclusion of other highly soluble biopolymers into these types of hydrogel vectors.

We extend the chiral quark model for u ,  d ,  c and b quarks with vector mesons, which we proposed in the previous analysis, to a model with the s quark. We include the nonet pseudo-scalar and vector mesons together with the singlet scalar meson based on the SU(3) L ×  SU(3) R chiral symmetry combined with the hidden local symmetry, which mediate force among u ,  d and s quarks. We fit the model parameters to the known ground state mesons and baryons. We show that the mass spectra of those hadrons are beautifully reproduced. We predict the masses of missing ground states, 1 meson and 20 baryons, which will be tested in the future experiment.

Conocybe belongs to the Bolbitiaceae. The morphological classification and molecular phylogenetics of Conocybe section Pilosellae are not in agreement. In this study, based on the specimens from China, we investigated the sect. Pilosellae and identified 17 species, including 7 new species: Conocybe pilosa, with a densely hairy pileus and stipe; C. reniformis, with reniform spores; C. ceracea, with waxy dehydration of the lamellae; C. muscicola, growing on moss; C. sinobispora, with two-spored basidia; C. hydrophila, with a hygrophanous pileus; C. rufostipes, growing on dung with a brown stipe; and C. pseudocrispa, one new record for China. A key was compiled for the sect. Pilosellae in China. Here, the sect. Pilosellae, and new species and records from China are morphologically described and illustrated. Maximum likelihood and Bayesian analyses were performed using a combined nuc rDNA internal transcribed spacer region (ITS) and nuc 28S rDNA (nrLSU), and translation elongation factor 1-alpha (tef1-α) dataset to reconstruct the relationships of this section. We found that the sect. Pilosellae was the basal clade of Conocybe, and its evolutionary features may shed light on the characteristics of Conocybe. By integrating morphological classification and phylogenetic analysis, we explored the possible phylogenetic relationships among the species of the sect. Pilosellae in China.

Cleavage of transfer (t)RNA and ribosomal (r)RNA are critical and conserved steps of translational control for cells to overcome varied environmental stresses. However, enzymes that are responsible for this event have not been fully identified in high eukaryotes. Here, we report a mammalian tRNA/rRNA-targeting endoribonuclease: SLFN13, a member of the Schlafen family. Structural study reveals a unique pseudo-dimeric U-pillow-shaped architecture of the SLFN13 N′-domain that may clamp base-paired RNAs. SLFN13 is able to digest tRNAs and rRNAs in vitro, and the endonucleolytic cleavage dissevers 11 nucleotides from the 3′-terminus of tRNA at the acceptor stem. The cytoplasmically localised SLFN13 inhibits protein synthesis in 293T cells. Moreover, SLFN13 restricts HIV replication in a nucleolytic activity-dependent manner. According to these observations, we term SLFN13 RNase S13. Our study provides insights into the modulation of translational machinery in high eukaryotes, and sheds light on the functional mechanisms of the Schlafen family. Translation inhibition is a strategy for organisms to overcome various environmental stresses including viral infections. Here the authors show that a tRNA/rRNA-targeting RNase Schlafen13 inhibits protein synthesis by directly digesting cytoplasmic tRNA and rRNA with the ability to restrict viral propagation.

Background Lymphatic metastasis commonly occurs in patients with papillary thyroid carcinoma and medullary thyroid carcinoma. The clinical and imaging characteristics of recurrent laryngeal nerve (RLN) invasion by extranodal extension (ENE) of metastatic lymph nodes remain understudied. This study aimed to evaluate these characteristics in patients with thyroid carcinoma. Methods A retrospective cohort study was conducted on 77 patients treated between January 2012 and March 2024 with thyroid carcinoma demonstrating gross RLN invasion during surgery. Fifteen patients with gross RLN invasion by ENE of the metastatic lymph nodes were included. The primary endpoint was the percentage of preserved nerves. The secondary endpoints included vocal cord function and recurrence-free survival. Results Fourteen patients had papillary thyroid carcinoma (PTC), and one had medullary thyroid carcinoma (MTC). There was no case of distant metastasis in the series. In the PTC group, two patients presented with hoarseness. There were two (14.3%) cases of T1a, six (42.9%) cases of T1b, and nine (64.3%) cases with concomitant lateral lymph node metastasis. The stage of the MTC case was T3bN1a. Among all the cases included, ten (67.7%) and five (33.3%) right and left RLNs, respectively, were invaded by ENE of the central compartment lymph nodes. Ultrasonography showed lymph nodes wrapping beyond half of the circumference of the RLNs and indistinct boundaries between the nodes and RLNs. Seven patients (46.7%) had the tumor shaved off from the epineurium, and three (20.0%) had the integrity of the RLNs preserved with gross residual tumor. Permanent vocal cord paralysis occurred in two (13.3%) cases receiving neurectomy, of which one was of the PTC group, and the other one belonged to the MTC group. At the end of the follow-up period, two patients in the PTC group experienced locoregional recurrence. Conclusions Most patients with RLN invasion by ENE were asymptomatic. Sonography is feasible for assessing the location of metastatic lymph nodes in relation to the RLN in this preliminary study. Careful central compartment evaluation for patients with lymphatic metastases from thyroid carcinoma is conducive to nerve preservation and radical resection of lesions, especially for patients with MTC.

This study is based on the phylogenetic framework of Conocybe section Pilosellae and incorporates materials from Jilin Province. A systematic phylogenetic tree was constructed using maximum likelihood and Bayesian analyses of internal transcribed spacer region (ITS) and nuclear large subunit ribosomal DNA (nrLSU), and translation elongation factor 1-alpha ( tef1-α ) sequences. As a result, three new species were discovered in Jilin Province: Conocybe verna , which emerges in broad-leaved forests during spring; C. angulispora , characterized by angular and submitriform or slightly hexagonal basidiospores; and C. rubrocyanea , with basidiomata displaying a reddish hue when fresh and a bluish hue when dry. Additionally, a new record for China, C. hexagonospora was identified, characterized by the lack of distinct pubescence on the pileus and slightly hexagonal basidiospores, increasing the total number of species within sect. Pilosellae to 22. Key for sect. Pilosellae is provided, accompanied by morphological descriptions and line drawings for the new species and a new record for China.