Induced pluripotent stem cells as a potential therapeutic source for corneal epithelial stem cells.

Corneal blindness caused by limbal stem cell deficiency (LSCD) is one of the most common debilitating eye disorders. Thus far, the most effective treatment for LSCD is corneal transplantation, which is often hindered by the shortage of donors. Pluripotent stem cell technology including embryonic stem cells (ESCs) and induced pluripotent stem cells (iPSCs) have opened new avenues for treating this disease.

N,N'-Dicarb-oxy-N,N'-dicarboxyl-ato(m-phenyl-ene)dimethanaminium monohydrate.

In the title inner salt, C(16)H(20)N(2)O(8)·H(2)O, two of four carboxyl groups are deprotonated, while the two imine groups are protonated. The two imino-diacetate groups are located on the same side of the benzene ring plane. Extensive inter-molecular O-H⋯O and N-H⋯O hydrogen bonds occur in the crystal.

Metal-organic frameworks constructed from 2,4,6-Tris(4-pyridyl)-1,3,5-triazine.

Five new metal-organic frameworks based on 2,4,6-tris(4-pyridyl)-1,3,5-triazine (tpt) ligand have been hydrothermally synthesized. Reaction of tpt and AgNO 3 in an acidic solution at 180 degrees C yields {[Ag(Htpt)(NO3)]NO(3).4H2O}n (1).

Synthesis, characterization and biological activity of lanthanum(III) complexes containing 2-methylene-1,10-phenanthroline units bridged by aliphatic diamines.

Two novel lanthanum(III) complexes containing 2-methylene-1,10-phenanthroline units bridged by aliphatic diamines were synthesized and characterized by elemental analysis, IR, NMR, thermal analysis and conductance measurements. They have been assayed for anticancer activity in vitro against HL-60 (human leukocytoma) cells, PC-3MIE8 (human prostate carcinoma) cells, BGC-823 (human stomach carcinoma) cells, MDA-MB-435 (human galactophore carcinoma) cells, Bel-7402 (human liver carcinoma) cells, and Hela (human cervix carcinoma) cells. The results show that the two complexes exhibit good cytotoxic activities against different cell lines in general, especially more effective than cisplatin against Bel-7402, BGC-823 and MDA-MB-435 cell lines.

[Studies on correspondence between catalytic activity and fluorescence spectra character of macrocyclic dioxotetramine complexes].

In this paper, the conventional fluorescence spectra and laser induced fluorescence spectra of a novel macrocyclic dioxotetramine, 1,4,7,10-tetraazacyclotridecane-11,13-dionato and its Cu(II), Co(II), Ni(II) complexes at different pH are studied. The results show that the complexes fluorescence quantum yields have the relation of phi CuL5 < phi CoL5 < phi NiL5. At the same time, the reasonable explanation is given.

Spectroscopy, cytotoxicity and DNA-binding of the lanthanum(III) complex of an L-valine derivative of 1,10-phenanthroline.

The interaction of the lanthanum(III) La(III)-L (L=N,N'-bis-(1-carboxy-2-methylpropyl)-1,10-phenanthroline-2,9-dimethanamine) complex with calf thymus DNA was studied by electronic spectra, fluorescence spectra and circular dichroic spectra. The La(III)-L complex was assayed for antitumor activity in vitro against the HL-60 (the human leucocytoma) cells, HCT-8 (the human coloadenocarcinoma) cells, BGC-823 (the human carcinoma of stomach) cells, Bel-7402 (the human liver carcinoma) cells and KB (the human nasopharyngeal carcinoma) cells. The results show that the La(III)-L complex has activity against HL-60 cells, Bel-7402 cells and KB cells.