Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Noggin vs BMP4 overexpression Epidermis

ABSTRACT: The study was performed to determine if there were alterations in the total RNA pool among the epidermal keratinocytes of K14 promotor-driven noggin overexpression compared with K14 promotor-driven BMP4 overexpression transgenic animals, which will directly relate to cellular chemistry and immune and sensory function. The total study is also aimed at determining alterations of transcrption factors and/or regulation of gene function, including methylation states and micro RNA control in keratinocytes following sensory challenge, particularly neuropathic and chronic pain conditions. Keywords: Comparison of RNA expression between BMP4-oex and Nog-oex transgenic epidermal keratinocytes Eight-ten epidermis strips were laser captured per animal, and six (6) animals were used per transgenic condition. Recovered RNA samples were pooled from 2 groups of 3 noggin transgenics and 2 groups of 3 BMP4 transgnics to create four pools for hybridization.

ORGANISM(S): Mus musculus

SUBMITTER: Sridar Chittur

PROVIDER: E-GEOD-26231 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Keratinocyte expression of calcitonin gene-related peptide β: implications for neuropathic and inflammatory pain mechanisms.

Hou Quanzhi Q Barr Travis T Gee Lucy L Vickers Jeff J Wymer James J Borsani Elisa E Rodella Luigi L Getsios Spiro S Burdo Trisha T Eisenberg Elan E Guha Udayan U Lavker Robert R Kessler John J Chittur Sridar S Fiorino Dennis D Rice Frank F Albrecht Phillip P

Pain 20110617 9

Calcitonin gene-related peptide (CGRP) is a vasodilatory peptide that has been detected at high levels in the skin, blood, and cerebrospinal fluid (CSF) under a variety of inflammatory and chronic pain conditions, presumably derived from peptidergic C and Aδ innervation. Herein, CGRP immunolabeling (IL) was detected in epidermal keratinocytes at levels that were especially high and widespread in the skin of humans from locations afflicted with postherpetic neuralgia (PHN) and complex region pain ...[more]

PMID: 21641113

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Project description:The vitamin D receptor (VDR) regulates cell proliferation and differentiation including epidermal keratinocytes by modulating transcription of its target genes. We are investigating the role of VDR in epidermal stem cells and their progenies in the regeneration process of epidermis and hair in the skin. VDR null mice are utilized in which VDR is specifically deleted in keratin 14 (K14) expressing keratinocytes by Cre-lox strategy. The impact of VDR deletion was evaluated by comparison of VDR null mice with no cre littermate control mice. The VDR was abundantly expressed in potential epidermal stem cells including basal cells in interfollicular epidermis (IFE), and in CD34 expressing bulge keratinocytes in hair follicles. Gene expression profiles and subsequent pathway analysis of stem cell enriched keratinocyte populations revealed that the VDR deletion significantly suppressed β-catenin signaling as well as VDR signaling. The role of VDR in epidermal stem cells was studied during hair follicle cycling and wound healing processes. The epidermal stem cells were not appropriately stimulated by hair depilation, and did not reinitiate anagen in the hair follicles resulting in a failure of hair regrowth. In addition, the stem cells were not fully activated after full thickness wounds were generated in VDR null skin under a low calcium diet to suppress compensation pathways. Cell proliferation was not fully induced in potential stem cells located in both IFE and hair follicles near the wounding edges, and re-epithelialization rate was delayed in VDR null skin. Gene expression profiling of the wounded skin (3 days after injury) indicated that β-catenin signaling was not fully induced in VDR null skin comparable to that observed in β-catenin null mice. The β-catenin target genes including Axin2 and cell cycle regulators involved in epidermal stem cell function were not induced in the edges of the wound of VDR null skin. These results demonstrated that VDR plays an essential role in hair cycling and wound healing processes through regulation of β-catenin signaling in epidermal stem cells and their progenies. n=3 CON and KO (each sample contain RNA extracted from keratinocytes, which is isolated from VDR KO and littermate control skins excised from 3 mice)

Dataset Information

Noggin vs BMP4 overexpression Epidermis

Publications

Keratinocyte expression of calcitonin gene-related peptide β: implications for neuropathic and inflammatory pain mechanisms.

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