Polydopamine coating on individual cells for enhanced extracellular electron transfer.

A new strategy of redox mediator immobilization was developed by coating polydopamine (PDA) on individual live cells to enhance extracellular electron transfer. As a result of the synergistic effect of the redox properties of PDA and the ability to adsorb self-secreted flavin molecules, a double-mediator electron transport channel was achieved.

[The effects of soluble epoxide hydrolase inhibitors on cholesterol efflux in adipocytes].

Objective: To observe the effects of soluble epoxide hydrolase inhibitors tAUCB on cholesterol efflux in adipocytes.

Methods: 3T3-L1 preadipocytes were induced to differentiation and maturation. Cells were stimulated with 100 µg/L LPS after starved for 24 hours, then tAUCB in various concentrations (1, 10, 50, 100 µmol/L)were added for 24 h, or incubated with the peroxisome proliferator activated receptor gamma (PPARγ) antagonist GW9662 (5 µmol/L).

Activation of Cdc2 contributes to apoptosis in HPV E6 expressing human keratinocytes in response to therapeutic agents.

Infection with human papillomaviruses (HPV) is strongly associated with the development of cervical cancer. The HPV E6 oncogene induces apoptosis in cervical cancer precursor lesions but the mechanism is poorly understood. While it is expected that inactivation of p53 by E6 should lead to a reduction in apoptosis, E6 also sensitizes cells to apoptosis under some experimental conditions.