Nanotechnology has been extensively explored for cancer diagnostics. However, the specificity of current methods to identify simultaneously several cancer biomarkers is limited due to color overlapping of bio-conjugated nanoparticles. Here, we present a technique to increase both the molecular and spectral specificity of cancer diagnosis by using tunable silver-gold nanorods with narrow surface...

An omega-fluorine-labeled oxyethylene thiol ligand, F(CH2CH2O)2CH2CH2SH, was synthesized, characterized and incorporated into mixed self-assembled monolayers with CH3(OCH2CH2)3SH onto a planar gold substrate and onto 2 nm gold nanoclusters. The fluorine-labeled nanocluster was self-assembled onto gold substrates using alkane dithiol (HS(CH2)nSH; n = 5, 8, 11) and oxyethylene dithiol (HS(CH2CH2O...

By programmable annealing, photothermal gold nanoclusters were integrated into filamentous aggregates of gellan gum to obtain a photofunctional fibrous substrate that enhanced cell adhesion and permitted light-triggered growth promotion.

background : breast cancer is one of the most frequent malignancies among iranian women. triple-negative breast cancer (tnbc) is referred to a type of breast cancer which three biomarkers of estrogen receptor, progesterone receptor, and human epidermal growth factor receptor 2 (her2), are negative. materials and methods: in this case control study, immunohistopathologic data of patients with tn...

background: inflammatory breast cancer (ibc), a subgroup of locally advanced breast cancer (labc), is diagnosed based on clinical findings, and seems to be different from other types of labc. the purpose of this study was to compare clinicopathological characteristics and outcomes between inflammatory and non-inflammatory labc patients at breast cancer research center (bcrc), tehran, iran. meth...

Structure, shape and composition are the basic parameters responsible for properties of nanoscale materials, distinguishing them from their bulk counterparts. To reveal these in three dimensions at the nanoscale, electron tomography is a powerful tool. Advancing electron tomography to atomic resolution in an aberration-corrected transmission electron microscope remains challenging and has been ...

Quasi-ordered, highly dispersed, gold nanoclusters of tightly controlled particle size were synthesized by dip-coating substrates with gold precursors encapsulated by block-copolymer micelles. By this method, gold particles (4.8 +/- 1.3 nm) were deposited on ITO-coated glass and shown to be catalytically active for electro-oxidation of carbon monoxide. XPS confirmed the catalytically active par...

Understanding the effect of interfacial interactions between protection motifs and gold cores on stabilities thiolate-protected nanoclusters is still a challenging task. Based analyses 95 experimentally crystallized theoretically predicted nanoclusters, we present ring model to offer deeper insight into for this class nanoclusters. In model, all can be generically viewed as fusion or interlocki...

breast conservation surgery combined with radiation therapy is now an accepted option for the treatment of early breast cancer. so we decided to evaluate the results of such treatment in our first group of patients treated by this method. from 1992 to 1996 , one hundred patients with stage i and ii breast cancer treated with breast conservative surgery (lumpectomy or quadrantectomy). were irrad...

Despite the significant progress in molecular imaging technologies that has been made in recent years, the specific detection of neural cells still remains challenging. Here, we suggest the use of gold nanoclusters (AuNCs) modified with a brain-targeting peptide as a potential imaging candidate for detecting neural cells in vitro and in mice. AuNCs of less than 10 nm (dynamic light scattering a...