Publications by authors named "Feiya Du"

Background: DOCK1 has been reported to be involved in tumor progression and resistance. 1-(2-(30-(trifluoromethyl)-[1,10-biphenyl]-4-yl)-2-oxoethyl)-5-pyrrolidinylsulfonyl2(1H)- pyridone (TBOPP) is a selective DOCK1 inhibitor; however, the role and molecular mechanisms of DOCK1 and its inhibition in breast cancer (BC) resistance remain poorly understood.

Objective: This study aims toinvestigate the underlying mechanisms of DOCK1 in BC resistance.

View Article and Find Full Text PDF

In this paper, we present a highly effective microfluidic emulsion system using an integrated microchannel plate (MCP), a porous glass membrane that is readily available and densely packs millions of through-microchannels, for high-throughput production of monodisperse droplets. The physical controls of droplet formation, including viscosity, flow rate, and pore size, have been extensively explored for optimum emulsification conditions. The performance of the device has been validated where monodisperse droplets with a narrow coefficient of variance (<5%) can be achieved at a dispersed phase flux of 3 mL h from a piece of 4 × 4 mm MCP.

View Article and Find Full Text PDF

Muscle ischemia injury is the essence of compartment syndrome (CS). Photoacoustic (PA) imaging can monitor hemoglobin concentration changes in ischemic tissue by determining the state of light-absorbing molecules. This study investigated whether PA imaging can provide accurate CS monitoring.

View Article and Find Full Text PDF

Acquired resistance to chemotherapy is a major obstacle in breast cancer (BC) treatment. Accumulated evidence has uncovered that microRNAs (miRNAs) are vital regulators of chemoresistance in cancer. Growing studies reveal that miR-137 acts as a suppressor in tumor progression.

View Article and Find Full Text PDF

Fractional CO laser is one of the most effective treatment options used to resurface scars. However, most previous studies have been performed on mature scars at least 2 months after surgery. Recent studies have emphasized the importance of early treatment to reduce scar formation.

View Article and Find Full Text PDF

Approximately 30% of all breast cancers are caused by a lack of estrogen receptor (ER), which renders the cancer resistant to endocrine-based therapy. Many studies suggest that ubiquitin-specific peptidase 9, X-linked () regulates multiple cellular behaviors, such as tumor growth, invasion, and resistance to chemotherapeutic agents. This study aimed to evaluate the anti-tumor effects of WP1130, a partially selective inhibitor of deubiquitinating enzymes, in breast cancer cells.

View Article and Find Full Text PDF

Background: Approximately 30% of breast cancer does not express the estrogen receptor (ER), which is necessary for endocrine-based therapy approaches. Many studies demonstrated that eukaryotic translation initiation factor 5A2 (eIF5A2) serves as a proliferation-related oncogene in tumorigenic processes.

Methods: The present study used cell viability assays, EdU incorporation assays, western blot, and immunofluorescence to explore whether N1-guanyl-1,7-diaminoheptane (GC7), which inhibits eIF5A2 activation, exerts synergistic cytotoxicity with doxorubicin in breast cancer.

View Article and Find Full Text PDF

Resistance to single or multiple chemotherapeutic drugs is a major obstacle in breast cancer therapy. Recent studies have suggested that GPR30 is implicated in mediating cancer cell proliferation. The aim of this study was to examine the anti-tumor effects of the GPR30 antagonist G15 in breast cancer.

View Article and Find Full Text PDF

microRNAs (miRNAs) are involved in the regulation of almost all physiological and pathological processes, including osteoblast proliferation and differentiation. miR-375 has been reported to be aberrantly expressed in various tumor types and to inhibit cell proliferation and invasion by targeting a number of key genes. However, the effects of miR-375 on osteogenic differentiation have not been investigated.

View Article and Find Full Text PDF

Background: Axillary osmidrosis results in social and psychological problems. Liposuction-assisted techniques used as treatments have been reported to have high recurrence rates. This study aims at introducing the aggressive suction-curettage technique in comparison to the open excision procedure.

View Article and Find Full Text PDF

MicroRNAs (miRNAs) are a group of small non-coding RNA molecules that have been shown to regulate the expression of genes involved in tumorigenesis. The relevance of miRNAs in the development, progression and prognosis of human breast cancer is not fully understood. miR-185 has been demonstrated to be involved in the pathogenesis of several types of cancers; however, its role in breast cancer has not yet been elucidated.

View Article and Find Full Text PDF

The aim of the present study was to investigate the effects of tanshinone IIA (Tan IIA), an active constituent of Salvia miltiorrhiza Bunge, on epithelial-mesenchymal transition (EMT) and hypoxia-induced chemoresistance in breast cancer cells. To induce hypoxia, MCF-7 and HCC1973 cells were treated with 100 µM deferoxamine followed by doxorubicin (DOX). Cell viability and proliferation were examined using the CCK-8 and EdU assays, respectively.

View Article and Find Full Text PDF

Background: The eIF5A2 gene (encoding the eukaryotic initiation factor 5A2) located at 3q26 is a putative oncogene that is overexpressed in colon and rectal carcinomas, lung cancer and hepatocellular carcinoma. EIF5A2 overexpression correlates significantly with tumor metastasis and is an adverse prognostic marker. However, eIF-5A2 overexpression in breast cancer and its effect on chemotherapy are unknown.

View Article and Find Full Text PDF

Background: Breast cancer is the major cause of cancer-related deaths in females world-wide. Doxorubicin-based therapy has limited efficacy in breast cancer due to drug resistance, which has been shown to be associated with the epithelial-to-mesenchymal transition (EMT). However, the molecular mechanisms linking the EMT and drug resistance in breast cancer cells remain unclear.

View Article and Find Full Text PDF

Background: The surgical procedure aimed at constructing the upper eyelid crease is the cosmetic operation most commonly requested by Asian patients. The incisional approach leaves a permanent crease, but the swelling period can last longer than 3 months, and a distinct scar usually is unavoidable. Many mini-incisional techniques with incisions of varying sizes and locations have been developed, but the removal of pretarsal tissue has not been sufficient because these procedures wipe out only small pockets of soft tissue immediately inferior to skin for placement of the suture.

View Article and Find Full Text PDF

Based on the investigation data in 1997-1999 and 1964-1965, this paper studied the population structure, stock density distribution and its seasonal variation, growth and mortality, as well as the feeding behaviour of Nemipterus bathybius (Snyber) in northern South China Sea. The results indicated that the body length of the samples was 4.2-21.

View Article and Find Full Text PDF