A Conjugate Exponential Model for Cancer Tissue Heterogeneity.

The diagnosis and treatment of cancer is made difficult by the heterogeneous nature of the cell population. Determining its compositional breakup from measurements of various measurable traits (such as gene expression measurements) is an important problem in the field of cancer diagnosis and treatment. In addition, the computational aspect of the problem also needs attention.

A model for cancer tissue heterogeneity.

An important problem in the study of cancer is the understanding of the heterogeneous nature of the cell population. The clonal evolution of the tumor cells results in the tumors being composed of multiple subpopulations. Each subpopulation reacts differently to any given therapy.

Neurotoxicity induced in differentiated SK-N-SH-SY5Y human neuroblastoma cells by organophosphorus compounds.

Organophosphorus (OP) compounds used as insecticides and chemical warfare agents are known to cause potent neurotoxic effects in humans and animals. Organophosphorus-induced delayed neuropathy (OPIDN) is currently thought to result from inhibition of neurotoxic esterase (NTE), but the actual molecular and cellular events leading to the development of OPIDN have not been characterized. This investigation examined the effects of OP compounds on the SY5Y human neuroblastoma cells at the cellular level to further characterize cellular targets of OP neurotoxicity.