Project description:Dynamic chemical modifications of RNA represent novel and fundamental mechanisms that regulate stemness and tissue homeostasis. Rejuvenation and wound repair of mammalian skin are sustained by epidermal progenitor cells, which are localized within the basal layer of the skin epidermis. N6-methyladenosine (m6A) is one of the most abundant modifications found in eukaryotic mRNA and lncRNA (long non-coding RNA). In this report, we survey changes of m6A RNA methylomes upon epidermal differentiation, and identify Pvt1, a lncRNA whose m6A modification is critically involved in sustaining stemness of epidermal progenitor cells. With genome-editing and a mouse genetics approach, we show that ablation of m6A methyltransferase or Pvt1 impairs the self-renewal and wound healing capability of skin. Mechanistically, methylation of Pvt1 transcripts enhances its interaction with MYC and stabilizes the MYC protein in epidermal progenitor cells. Our study presents a global view of epitranscriptomic dynamics that occur during epidermal differentiation and identifies the m6A modification of Pvt1 as a key signaling event involved in skin tissue homeostasis and wound repair.

2021-02-01 | GSE165912 | GEO

Cancer-adipoocyte interaction by co-culture of MCF7 and human primary adipocytes

Project description:Examination of an interaction between adipocytes and MCF7 to identify the genes associated with invasion of carcinoma cells into adjescent adipocytes.

2016-02-01 | GSE65652 | GEO

Next Generation Sequencing Facilitates Quantitative Analysis for Chromatin Immunoprecipitation of Wild Type and PVT1 Knockdown by CRISPRi in MDA-MB-231 human breast cancer cell line

Project description:CRISPRi targeting PVT1 specifically increased H3K9me3 at PVT1

2018-05-31 | GSE97584 | GEO

Next Generation Sequencing for Chromatin accessbility by ATAC-seq for MDA-MB-231, MCF7 or HCT116 cell line

Project description:CRISPRi on PVT1 did not induce drastic changes on chromatin accessbility in MDA-MB-231 cell line. CCAT1 enhancer is accessble specifically in HCT116, not in MCF7 or MDA-MB-231.

2018-05-31 | GSE97583 | GEO

Next Generation Sequencing Facilitates Quantitative Analysis of Wild Type and PVT1 Knockdown by CRISPRi in MDA-MB-231 human breast cancer cell line

Project description:Induced MYC expression by CRISPRi targeting PVT1 was validated by RNA-seq

2018-05-31 | GSE97587 | GEO