Endothelin-1 is a transcriptional target of p53 in epidermal keratinocytes and regulates UV induced melanocyte homeostasis

submitted by: arup.indra
Keratinocytes contribute to melanocyte activity by influencing their microenvironment, in part, through secretion of paracrine factors. Here we discovered that p53 directly regulates Edn1 expression in epidermal keratinocytes and controls UV-induced melanocyte homeostasis. Selective ablation of EDN1 in murine epidermis (EDN1ep-/-) does not alter melanocyte homeostasis in newborn skin but decreases dermal melanocytes in adult skin. Results showed that keratinocytic EDN1 in a non-cell...
Authors: Daniel J. Coleman, Gitali Ganguli-Indra, Stephen Hyter, Arup Indra, Steven Ma, Gary F. Merrill, Masashi Yanagisawa

Embryonic stem-cell-preconditioned microenvironment induces loss of cancer cell properties in human melanoma cells

submitted by: cmjones
The cancer microenvironment affects cancer cell proliferation and growth. Embryonic stem (ES)-preconditioned 3-dimensional (3-D) culture of cancer cells induces cancer cell reprogramming and results in a change in cancer cell properties such as differentiation and migration in skin melanoma. However, the mechanism has not yet been clarified. Using the ES-preconditioned 3-D microenvironment model, we provide evidence showing that the ES microenvironment inhibits proliferation and...
Authors: M. o. Kim, S. h. Kim, N. Oi, M. h. Lee, D. h. Yu, D. j. Kim, E. j. Cho, A. m. Bode, Y. y. Cho, T. g. Bowden, Z. Dong

Active living for rural children: community perspectives using PhotoVOICE

submitted by: ehenness
BACKGROUND: Active living integrates physical activity into one's daily routine. Current understanding of active living among children and their families living in rural communities is limited. A community perspective is critical to understand the contextual factors that influence children's physical activity in rural areas. PURPOSE: The purpose of this study was to identify the perceived environmental factors that support or hinder physical activity among rural children to develop...
Authors: Erin Hennessy, Vivica Kraak, Raymond Hyatt, Julia Bloom, Mark Fenton, Colby Wagoner, Christina Economos