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Intraepithelial papillary neoplasia in the biliary tree is mediated by FGF10 signal

ABSTRACT: Intraepithelial papillary neoplasia in the biliary tree is mediated by FGF10 signal

PROVIDER: PRJNA488551 | ENA |

REPOSITORIES: ENA

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Intraepithelial papillary neoplasia in the biliary tree is mediated by FGF10 signal

Project description:The new concept of neoplastic lesion of biliary tree, Biliary intraepithelial neoplasia (BilIN) and intraductal papillary neoplasm of bile duct (IPNB), as a conunterpart of pancreatic intraepithelial neoplasia (PanIN) and intraductal papillary mucinous neoplasm (IPMN), have been reported to be precancerous lesions in hilar and extrahepatic cholangiocarcinoma and arise from lining bile duct epithelium and peribiliary gland (PBG) under inflammation microenvironment in human. However, mouse model is lacking different from intrahepatic cholangiocarcinoma arised from canal of Hering in the liver. In a Doxycyclin-controlled transgenic mouse model of BilIN and IPNB, overexpression of Fibroblast Growth Factor 10 (FGF10) phenocopies human pathology with mutistep progression of cholangiocarcinogenesis in chronic cholangitis. The development and branching morphogenesis of BilIN and IPNB was induced by Fgf10/Erk signal and inhibited by MEK inhibiter. Pdx1+ PBG cells present in IPNB were able to lineage trace the early IPNB lesion as well as Krt19+ cholangiocytes. BiliN and IPNB with Kras mutation was irreversible different from no Kras mutation, and loss of p16 contributed to malignant transformation of BilIN and IPNB. Our data challenge the common paradigms regarding the pathogenesis of BilIN and IPNB.

2019-11-12 | GSE119227 | GEO

miRNA profiling of biliary intraepithelial neoplasia reveals step-wise tumorigenesis in cholangiocarcinoma

Project description:Biliary intraepithelial neoplasia (BilIN) is a common precursor lesion of distal cholangiocarcinoma (dCCA). However, the sequence leading from a single epithelial layer in normal biliary epithelia to intraepithelial precursor lesions and finally to the invasive tumor is poorly understood. Here, we aimed to elucidate key miRNAs involved in this stepwise process and to identify their possible mRNA target genes in distal cholangiocarcinogenesis. As basis of our study, we conducted Laser Capture Microdissection of FFPE tissue sections of 12 patients with distal cholangiocarcinoma. For each patient, we isolated three matched sample sets, including non-neoplastic biliary epithelia, high grade BilIN (grade 3), and invasive dCCA, thereby representing different stages of distal cholangiocarcinogenesis. This resulted in a total of 36 samples. Total RNA was extracted and the expression of ~800 miRNAs was assessed using the Nanostring® technology. Significantly deregulated miRNAs were validated by quantitative RT-PCR. Target genes were identified using miRWalk2.0 and validated by qRT-PCR and Western blot.

2020-08-07 | GSE140001 | GEO

miRNA profiling of biliary intraepithelial neoplasia reveals step-wise tumorigenesis in distal cholangiocarcinoma via the miR-451a/ATF2 axis

Project description:Distal cholangiocarcinoma (dCCA) is a biliary tract cancer with dismal prognosis and is often preceded by biliary intraepithelial neoplasia (BilIN) as a non-invasive precursor lesion. We found that miR-451a is downregulated in dCCA. Overexpression of mimic-451a in the CCA cell line SNU478 revealed multiple downregulated genes and potential miR-451a candidate targets.

2020-09-01 | GSE147969 | GEO

miRNA profiling of biliary intraepithelial neoplasia reveals step-wise tumorigenesis in cholangiocarcinoma

Project description:miRNA profiling of biliary intraepithelial neoplasia reveals step-wise tumorigenesis in cholangiocarcinoma

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Riboflavin deficiency regulates inflammation-associated genes in rat esophageal intraepithelial neoplasia

Project description:Transcriptome analysis of RNA samples from riboflavin deficiency combined with NMBA-induced rat esophageal intraepithelial neoplasia tissues. Epidemiological studies suggest that dietary riboflavin deficiency and environmental exposure to N-nitrosomethylbenzylamine (NMBA) are common in China's high incidence area of esophageal cancer. Riboflavin deficiency has been documented as an important risk factor for esophageal cancer. In this study, we established a F344 rat esophageal tumor model that combines dietary riboflavin deficiency with exposure to NMBA. The results showed that riboflavin deficiency combined with NMBA (R0N+) enhanced the incidence of esophageal intraepithelial neoplasia, including in situ carcinoma, whereas normal levels of riboflavin combined with NMBA (RcN+) mainly induced the occurrence of esophageal benign hyperplasia and small amount of esophageal intraepithelial neoplasia. Oxidative DNA damage (8-OHdG) and DNA double-strand breaks (p-γH2AX) in R0N+ rats were higher than that in RcN+ rats. The aim of the present study is to analyze the mechanism of riboflavin deficiency-induced tumorigenesis. So, we used Affymetrix Clariom D(also known as Rat Transcriptome Array 1.0) to identify genes that were differentially expressed upon R0N+ esophageal intraepithelial neoplasia tissues.

2018-02-28 | GSE111207 | GEO

Genomic characterization of co-existing biliary tract intraepithelial neoplasia and carcinoma lesions reveals distinct evolutionary paths of gallbladder cancer

Project description:Gallbladder carcinoma is the most common cancer of the biliary tract with dismal survival largely due to delayed diagnosis. Biliary tract intraepithelial neoplasia (BilIN) is the common benign tumor that is suspected to be precancerous lesions. However, the genetic and evolutionary relationships between BilIN and carcinoma remain unclear. Here we performed whole-exome sequencing of coexisting low-grade BilIN (adenoma), high-grade BilIN, and carcinoma lesions, and normal tissues from the same patients.

| EGAS00001005402 | EGA

Distinct chromosomal aberrations in high-grade cervical intraepithelial neoplasia harbouring HPV16 versus HPV31

Project description:High-grade cervical intraepithelial neoplasia (CIN2/3) represents a heterogeneous disease both with respect to clinical behaviour and chromosomal aberrations detected. The current study aimed to investigate whether CIN2/3 harbouring different hrHPV types vary with respect to their chromosomal aberrations, including both number of aberrations and specific chromosomal loci affected.

2012-01-27 | GSE31241 | GEO

miRNA profiling of biliary intraepithelial neoplasia reveals step-wise tumorigenesis in distal cholangiocarcinoma via the miR-451a/ATF2 axis

Project description:miRNA profiling of biliary intraepithelial neoplasia reveals step-wise tumorigenesis in distal cholangiocarcinoma via the miR-451a/ATF2 axis

| PRJNA622683 | ENA

GNPS Comparable plasma lipid changes in patients with high-grade cervical intraepithelial neoplasia and patients with cervical cancer

Project description:Comparable plasma lipid changes in patients with high-grade cervical intraepithelial neoplasia and patients with cervical cancer

2020-10-22 | MSV000086351 | GNPS

Murine Fgf3-/-;Fgf10-/- vs. Fgf3+/-;Fgf10+/- otic placode profiling

Project description:Transcriptional profiling of mouse 4-8 somite microdissected otic placodes from Fgf3/Fgf10 double heterozygotes (controls) compared to Fgf3/Fgf10 double null mutants. The purpose was to determine the effectors that are induced (or repressed) by Fgf3 and Fgf10 in the course of otic placode induction. Two condition experiment, double heterozygote vs. double null placodes. Biological replicas: 3 Fgf3+/-;Fgf10+/- and 3 Fgf3-/-;Fgf10-/- pools of ten placodes each.

2010-03-07 | E-GEOD-18702 | biostudies-arrayexpress

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