Sulfide-mediated growth of NIR luminescent Pd/Ag atomically precise nanoclusters.

An essential feature of coinage metal nanoclusters (NCs) is their photoluminescence (PL), which spans a wide range of wavelengths from visible to near-infrared regions (NIR-I/II). A key challenge for synthetic chemists is to develop materials capable of efficient spectral change with maximum efficiency. Herein, we report novel dithiolate-protected bimetallic Pd-Ag NCs of the type [PdAgS{SP(OR)}] (R = Pr, 1Pr and Bu, 1Bu) and [PdAgS{SP(OBu)}] (2Bu).

Intrinsic 77 K Phosphorescence Characteristics and Computational Modeling of Ru(II)-(Bidentate Cyclometalated-Aromatic Ligand) Chromophores: Their Relatively Low Nonradiative Rate Constants Originating from Low Spin-Orbit Coupling Driven Vibronic Coupling Amplitudes between Emitting and Ground States.

We investigated the photoinduced relaxation of Kasha-type emitting ruthenium-(bidentate cyclometalated aromatic ligand), Ru-CM, chromophores of [Ru(pzpy)(CM)] ions (CM = 1-phenylisoquinoline, 2,3-diphenylpyrazine, and 1,4-diazatriphenylene and pzpy = 2-pyrazol-1-yl-pyridine). This is the first report of the phosphorescence behavior of pure Ru-(bidentate CM) chromophores. The 77 K photoinduced relaxation characteristics of phosphorescence chromophores showed emission quantum yields higher than those of reference Ru-bpy (bpy = 2,2'-bipyridine) chromophores in the emission region of 670-900 nm.

HIF1α Counteracts TGFβ1-Driven TSP1 Expression in Endothelial Cells to Stimulate Angiogenesis in the Hypoxic Tumor Microenvironment.

Emerging evidence suggests that TGFβ1 can inhibit angiogenesis, contradicting the coexistence of active angiogenesis and high abundance of TGFβ1 in the tumor microenvironment. Here, we investigated how tumors overcome the antiangiogenic effect of TGFβ1. TGFβ1 treatment suppressed physiologic angiogenesis in chick chorioallantoic membrane and zebrafish models but did not affect angiogenesis in mouse hepatoma xenografts.

Controlled aggregation of Pt/PtH/Rh/RhH doped silver superatomic nanoclusters into 16-electron supermolecules.

The assembly of discrete superatomic nanoclusters into larger constructs is a significant stride towards developing a new set of artificial/pseudo-elements. Herein, we describe a novel series of 16-electron supermolecules derived from the combination of discrete 8-electron superatomic synthons containing interstitial hydrides as vertex-sharing building blocks. The symmetric (RhH)Ag[SP(OPr)] (1) and asymmetric PtHPtAg[SP(OPr)] (2) are characterized by ESI-MS, SCXRD, NMR, UV-vis absorption spectra, electrochemical and computational methods.

Doping effect on a two-electron silver nanocluster.

This study investigates the effects of metal addition and doping of a 2-electron silver superatom, [Ag{SP(OPr)}] (Ag10). When Ag is added to Ag10 in THF solution, [Ag{SP(OPr)}(OTf)] (Ag11) is rapidly formed almost quantitatively. When the same method is used with Cu, a mixture of alloys, [CuAg{SP(OPr)}] ( = 1-3, CuxAg11-x), is obtained.

Understanding the AIE phenomenon of nonconjugated rhodamine derivatives via aggregation-induced molecular conformation change.

The bottom-up molecular science research paradigm has greatly propelled the advancement of materials science. However, some organic molecules can exhibit markedly different properties upon aggregation. Understanding the emergence of these properties and structure-property relationship has become a new research hotspot.

The PrL→avBNST circuit rapidly modulates depression-like behaviors in male mice.

Depression is a global disease with a high prevalence. Here, we examine the role of the circuit from prelimbic mPFC (PrL) to the anterior ventral bed nucleus of the stria terminalis (avBNST) in depression-like mice through behavioral tests, immunofluorescence, chemogenetics, optogenetics, pharmacology, and fiber photometry. Mice exposed to chronic restraint stress with individual housing displayed depression-like behaviors.

Hydride Doping Effects on the Structure and Properties of Eight-Electron Rh/Ag Superatoms: The [RhH@Ag{SP(OPr)}] ( = 0-2) Series.

Three hitherto unknown eight-electron rhodium/silver alloy nanoclusters, [RhAg{SP(OPr)}] (), [RhHAg{SP(OPr)}] (), and [RhHAg{SP(OPr)}] (), have been isolated and fully characterized. Cluster contains a regular Rh@Ag icosahedral core, whereas and exhibit distorted RhH@Ag and RhH@Ag icosahedral cores. The single-crystal neutron structure of located the encapsulated hydride at the center of an enlarged RhAg tetrahedron.

Fructose Metabolism in Tumor Endothelial Cells Promotes Angiogenesis by Activating AMPK Signaling and Mitochondrial Respiration.

Unlabelled: Angiogenesis is vital for tumor growth and metastasis. Emerging evidence suggests that metabolic reprogramming in endothelial cells (EC) may affect angiogenesis. Here, we showed that multiple regulators in the fructose metabolism pathway, especially fructose transporter SLC2A5 and fructose-metabolizing enzyme ketohexokinase (KHK), were upregulated in tumor endothelial cells from hepatocellular carcinoma (HCC).

Promoting effect of Fe on gentamicin resistance in Escherichia coli.

Kinds of antibiotics are used to prevent and control bacteria infections, unfortunately, the overuse and misuse of antibiotic have promoted the emergence and spread of antibiotic-resistant bacteria. Therefore, understanding the mechanism of antibiotic resistance is very important. This study explores the combined effection of metal ions and antibiotic to the drug resistance of Escherichia coli.

Dual and opposing roles of the androgen receptor in VETC-dependent and invasion-dependent metastasis of hepatocellular carcinoma.

Background & Aims: Contradictory roles of the androgen receptor (AR) in hepatocellular carcinoma (HCC) metastasis have been reported. We have shown that VETC (vessels encapsulating tumor clusters) mediates invasion-independent metastasis, whereas VETC HCCs metastasize in an invasion-dependent manner. Herein, we aimed to reveal the roles of AR in HCC metastasis.

Predictive value of K-ras and PIK3CA in non-small cell lung cancer patients treated with EGFR-TKIs: a systemic review and meta-analysis.

Objective: A meta-analysis was performed to augment the insufficient data on the impact of mutative EGFR downstream phosphatidylinositol-3-kinase (PI3K) and mitogen-activated protein kinase (MAPK) pathways on the clinical efficiency of epidermal growth factor receptor tyrosine kinase inhibitor (EGFR-TKI) treatment of non-small cell lung cancer (NSCLC) patients.

Methods: Network databases were explored in April, 2015. Papers that investigated the clinical outcomes of NSCLC patients treated with EGFR-TKIs according to the status of K-ras and/or PIK3CA gene mutation were included.