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Probes for INS

ACD can configure probes for the various manual and automated assays for INS for RNAscope Assay, or for Basescope Assay compatible for your species of interest.

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  • (-) Remove Publications filter Publications (6996)
Expression of Toll-Like Receptor 4 in Glomerular Endothelial Cells under Diabetic Conditions.

Acta histochemica et cytochemica, 46(1), 35–42.

Takata S, Sawa Y, Uchiyama T, Ishikawa H (2013).
PMID: 23554538 | DOI: 10.1267/ahc.13002.

Diabetic conditions promote glomerulosclerosis by mesangial cells but the mechanisms are not fully elucidated. The present study evaluated the expression of toll-like receptor 4 in glomerular endothelial cells in the streptozotocin (STZ)-induced type 1 diabetic mouse (ICR-STZ) and the type 2 diabetic KK/TaJcl mouse which were fed a high fat diet feed (KK/Ta-HF). In the ICR-STZ and KK/Ta-HF almost glomeruli were immunostained with anti-TLR4 but there was no glomerulus immunostained by ani-TLR4 in the control ICR and KK/Ta. Laser-scanning confocal microscopy showed that the TLR4-positive region did not coincide with the podoplanin-positive region but coincide with the PECAM-1- and VE-cadherin-positive regions in the glomeruli of the ICR-STZ and KK/Ta-HF. The in situ hybridization showed that almost signals for TLR4 mRNA were present in the glomerulus of the ICR-STZ and KK/Ta-HF to a stronger extent than in the control ICR and KK/Ta. These suggest that glomerular endothelial cells usually express the TLR4 gene and hyperglycemia in the diabetic condition induces the TLR4 protein expression in the glomerular capillary endothelial cells. Cytokine productions through the TLR signaling pathway in glomerular endothelial cells may allow mesangial cells to produce extracellular matrix proteins in the diabetic milieu.
Glucagon-Like Peptide-1 Receptor Expression in Normal and Neoplastic Human Pancreatic Tissues.

Pancreas.

2016 Apr 01

Dal Molin M, Kim H, Blackford A, Sharma R, Goggins M.
PMID: 26495786 | DOI: 10.1097/MPA.0000000000000521.

Abstract

OBJECTIVES:

Studies have proposed pro-oncogenic effects of glucagon-like peptide-1 receptor (GLP-1R) agonists in the pancreas by promoting GLP-1R overactivation in pancreatic cells. However, the expression of GLP-1R in normal and neoplastic pancreatic cells remains poorly defined, and reliable methods for detecting GLP-1R in tissue specimens are needed.

METHODS:

We used RNA in situ hybridization to quantify glp-1r RNA in surgically resected human pancreatic specimens, including pancreatic ductal adenocarcinoma (PDAC), preinvasive intraepithelial lesions (pancreatic intraepithelial neoplasia), and non-neoplastic ductal, acinar, and endocrine cells. A mixed-effect linear regression model was used to investigate the relationship between glp-1r signals and all cells, ordered by increasing grade of dysplasia.

RESULTS:

All cell types had evidence of glp-1r transcripts, with the highest expression in endocrine cells and lowest in ductal cells. The slope of the fitted line was not significantly different from zero (0.07; 95% confidence interval, -0.0094 to 0.244; P = 0.39), suggesting that progression from normal cells to PDAC is not associated with a parallel increase in glp-1r RNA. A series of pairwise comparisons between all cell types with respect to their glp-1r expression showed no significant difference in glp-1r in cancer, pancreatic intraepithelial neoplasia, and acinar and ductal cells.

CONCLUSIONS:

Our study supports the lack of evidence for GLP-1R overexpression in PDAC.

Detection of a novel circovirus PCV3 in pigs with cardiac and multi-systemic inflammation.

Virol J.

2016 Nov 11

Phan TG, Giannitti F, Rossow S, Marthaler D, Knutson T, Li L, Deng X, Resende T, Vannucci F, Delwart E.
PMID: 27835942 | DOI: 10.1186/s12985-016-0642-z

Abstract

BACKGROUND:

Porcine circovirus 2 causes different clinical syndromes resulting in a significant economic loss in the pork industry. Three pigs with unexplained cardiac and multi-organ inflammation that tested negative for PCV2 and other known porcine pathogens were further analyzed.

METHODS:

Histology was used to identify microscopic lesions in multiple tissues. Metagenomics was used to detect viral sequences in tissue homogenates. In situ hybridization was used to detect viral RNA expression in cardiac tissue.

RESULTS:

In all three cases we characterized the genome of a new circovirus we called PCV3 with a replicase and capsid proteins showing 55 and 35 % identities to the genetically-closest proteins from a bat-feces associated circovirus and were even more distant to those of porcine circovirus 1 and 2. Common microscopic lesions included non-suppurative myocarditis and/or cardiac arteriolitis. Viral mRNA was detected intralesionally in cardiac cells. Deep sequencing in tissues also revealed the presence of porcine astrovirus 4 in all three animals as well as rotavirus A, porcine cytomegalovirus and porcine hemagglutinating encephalomyelitis virus in individual cases.

CONCLUSION:

The pathogenicity and molecular epidemiology of this new circovirus, alone or in the context of co-infections, warrants further investigations.

Fetuin-A (alpha 2HS glycoprotein) modulates growth, motility, invasion, and senescence in high-grade astrocytomas

Cancer Med.

2016 Nov 23

Nangami GN, Sakwe AM, Izban MG, Rana T, Lammers PE, Thomas P, Chen Z, Ochieng J.
PMID: 27882696 | DOI: 10.1002/cam4.940

Glioblastomas (high-grade astrocytomas) are highly aggressive brain tumors with poor prognosis and limited treatment options. In the present studies, we have defined the role of fetuin-A, a liver-derived multifunctional serum protein, in the growth of an established glioblastoma cell line, LN229. We hereby demonstrate that these cells synthesize ectopic fetuin-A which supports their growth in culture in the absence of serum. We have demonstrated that a panel of tissue microarray (TMA) of glioblastomas also express ectopic fetuin-A. Knocking down fetuin-A using shRNA approach in LN229, significantly reduced their in vitro growth as well as growth and invasion in vivo. The fetuin-A knockdown subclones of LN229 (A and D) also had reduced motility and invasive capacity. Treatment of LN229 cells with asialofetuin (ASF), attenuated their uptake of labeled fetuin-A, and induced senescence in them. Interestingly, the D subclone that had ~90% reduction in ectopic fetuin-A, underwent senescence in serum-free medium which was blunted in the presence of purified fetuin-A. Uptake of labeled exosomes was attenuated in fetuin-A knockdown subclones A and D. Taken together, the studies demonstrate the impact of fetuin-A as significant node of growth, motility, and invasion signaling in glioblastomas that can be targeted for therapy.

CB1 Receptor Activation on VgluT2-Expressing Glutamatergic Neurons Underlies Δ9-Tetrahydrocannabinol (Δ9-THC)-Induced Aversive Effects in Mice

Sci Rep.

2017 Sep 26

Han X, He Y, Bi GH, Zhang HY, Song R, Liu QR, Egan JM, Gardner EL, Li J, Xi ZX.
PMID: 28951549 | DOI: 10.1038/s41598-017-12399-z

Cannabis can be rewarding or aversive. Cannabis reward is believed to be mediated by activation of cannabinoid CB1 receptors (CB1Rs) on GABAergic neurons that disinhibit dopaminergic neurons in the ventral tegmental area (VTA). However, little is known about the mechanisms underlying cannabis aversion in rodents. In the present study, CB1Rs are found not only on VTA GABAergic neurons, but also on VTA glutamatergic neurons that express vesicular glutamate transporter 2 (VgluT2). We then used Cre-Loxp transgenic technology to selectively delete CB1Rs in VgluT2-expressing glutamatergic neurons (VgluT2-CB1 -/-) and Cre-dependent viral vector to express light-sensitive channelrhodopsin-2 into VTA glutamatergic neurons. We found that photoactivation of VTA glutamatergic neurons produced robust intracranial self-stimulation (ICSS) behavior, which was dose-dependently blocked by DA receptor antagonists, but enhanced by cocaine. In contrast, Δ9-tetrahydrocannabinol (Δ9-THC), the major psychoactive component of cannabis, produced dose-dependent conditioned place aversion and a reduction in the above optical ICSS in VgluT2-cre control mice, but not in VgluT2-CB1 -/- mice. These findings suggest that activation of CB1Rs in VgluT2-expressing glutamate neurons produces aversive effects that might explain why cannabinoid is not rewarding in rodents and might also account for individual differences in the hedonic effects of cannabis in humans.

Transcription Factor GATA6: A Novel Marker and Putative Inducer of Ductal Metaplasia in Biliary Atresia.

Am J Physiol Gastrointest Liver Physiol.

2018 Feb 01

Soini T, Pihlajoki M, Andersson N, Lohi J, Huppert KA, Rudnick DA, Huppert SS, Wilson DB, Pakarinen MP, Heikinheimo M.
PMID: 29388792 | DOI: 10.1152/ajpgi.00362.2017

Biliary atresia (BA), a neonatal liver disease, is characterized by obstruction of extrahepatic bile ducts with subsequent cholestasis, inflammation, and progressive liver fibrosis. To gain insights into the pathophysiology of BA, we focused attention on GATA6, a transcription factor implicated in biliary development. Early in fetal development GATA6 expression is evident in cholangiocytes and hepatocytes, but by late gestation it is extinguished in hepatocytes. Utilizing a unique set of BA liver samples collected before and after successful portoenterostomy (PE), we found that GATA6 expression is markedly upregulated in hepatocytes of patients with BA compared to healthy and cholestatic disease controls. This upregulation is recapitulated in two murine models simulating bile duct obstruction and intrahepatic bile ductule expansion. GATA6 expression in BA livers correlates with two established negative prognostic indicators (age at PE, degree of intrahepatic bile ductule expansion) and decreases after normalization of serum bilirubin by PE. GATA6 expression in BA livers correlates with expression of known regulators of cholangiocyte differentiation ( JAGGED1, HNF1β, and HNF6). These same genes are upregulated after enforced expression of GATA6 in human hepatocyte cell models. In conclusion, GATA6 is a novel marker and a putative driver of hepatocyte-cholangiocyte metaplasia in BA and its expression in hepatocytes is downregulated after successful PE.

Plaque-dependent morphological and electrophysiological heterogeneity of microglia in an Alzheimer's disease mouse model.

Glia.

2018 Mar 01

Plescher M, Seifert G, Hansen JN, Bedner P, Steinhäuser C, Halle A.
PMID: 29493017 | DOI: 10.1002/glia.23318

Microglia, the central nervous system resident innate immune cells, cluster around Aβ plaques in Alzheimer's disease (AD). The activation phenotype of these plaque-associated microglial cells, and their differences to microglia distant to Aβ plaques, are incompletely understood. We used novel three-dimensional cell analysis software to comprehensively analyze the morphological properties of microglia in the TgCRND8 mouse model of AD in spatial relation to Aβ plaques. We found strong morphological changes exclusively in plaque-associated microglia, whereas plaque-distant microglia showed only minor changes. In addition, patch-clamp recordings of microglia in acute cerebral slices of TgCRND8 mice revealed increased K+ currents in plaque-associated but not plaque-distant microglia. Within the subgroup of plaque-associated microglia, two different current profiles were detected. One subset of cells displayed only increased inward currents, while a second subset showed both increased inward and outward currents, implicating that the plaque microenvironment differentially impacts microglial ion channel expression. Using pharmacological channel blockers, multiplex single-cell PCR analysis and RNA fluorescence in situ hybridization, we identified Kir and Kv channel types contributing to the in- and outward K+ conductance in plaque-associated microglia. In summary, we have identified a previously unrecognized level of morphological and electrophysiological heterogeneity of microglia in relation to amyloid plaques, suggesting that microglia may display multiple activation states in AD.

Presence of lytic Epstein-Barr virus infection in nasopharyngeal carcinoma.

Head Neck.

2018 Mar 09

Yu F, Lu Y, Petersson F, Wang DY, Loh KS.
PMID: 29522272 | DOI: 10.1002/hed.25131

Abstract

BACKGROUND:

Chromogenic Epstein-Barr virus-encoded RNA (EBER) in situ hybridization (EBER-ISH) is the gold standard to detect Epstein-Barr virus (EBV) but it is difficult to use in conjunction with immunohistochemistry (IHC). In this study, our purpose was to validate the sensitivity and specificity of RNAscope in detection of EBV infection in nasal epithelium and its stroma.

METHODS:

Fluorescence-based RNAscope EBER-ISH, BRLF1-ISH, and lineage marker-IHC were performed on archived formalin-fixed paraffin-embedded tissues from normal nasal cavity (n = 5), nasopharynx (n = 8), and nasopharyngeal carcinoma (NPC) specimens (n = 10).

RESULTS:

The EBERs were detected in 10 of 10 NPC samples but was absent in all normal tissues from the nasal cavity and nasopharynx. The EBERs were exclusively located in pan-cytokeratin (pan-CK)-positive tumor epithelial cells but not in CD45-positive leukocytes and vimentin-positive stromal fibroblasts. The level of EBER expression varied in tumor cells within patient and between patients as well. Additionally, 5 of 10 patients had positive BRLF-ISH.

CONCLUSION:

We developed a simple and reproducible method to simultaneously detect mRNA and protein in formalin-fixed paraffin-embedded tissues of NPC. As a single staining, traditional EBER continues to be useful; however, for interpretation of the phenotype of EBV-infected cells, RNAscope is superior. Significantly, we showed that lytic EBV infection took place in NPC tumors.

Evaluating the cytokine profile of the WC1+ γδ T cell subset in the ileum of cattle with the subclinical and clinical forms of MAP infection

Veterinary Immunology and Immunopathology

2018 May 19

Albarrak SM, Waters WR, Stabel JR, Hostetter JM.
PMID: - | DOI: 10.1016/j.vetimm.2018.05.003

In the present study, we evaluated expression of IFN-γ, IL-17, TNF-α, IL-10 and TGF-β by mucosal cells, including WC1+ γδ T cells, in ileal tissues taken from non-infected cattle and cattle naturally infected with Mycobacterium avium subsp paratuberculosis (MAP). Infected cattle were either in the subclinical or clinical stage of infection. We hypothesized that the cytokine profile of the WC1+ γδ T cell subset would be different between subclinical and clinical cattle. Our data indicate a significant increase in the numbers of WC1+ γδ T cells expressing IL-10 in clinical cattle compared to subclinical and non-infected cattle. We observed a significant increase in TGF-β expression by non-WC1+ cells in clinically infected cattle. Expression of IFN-γ, IL-17 and TNF-α in mucosal cells, including the WC1+ γδ T cell subset, was identified in all examined groups. However, our data indicate that the stage of infection did not significantly influence expression of these proinflammatory cytokines. This study demonstrates changes in the cytokine mRNA expression profile of mucosal cells in the ileum, and specifically WC1+ γδ T cells, as cattle progress to the clinical disease. The change is characterized by an increase in expression of anti-inflammatory cytokines.

Localization of cells expressing SGLT1 mRNA in the yolk sac and small intestine of broilers

Poultry Science

2018 Aug 01

Zhang H, Li H, Kidrick J, Wong EA.
PMID: - | DOI: 10.3382/ps/pey343

The uptake of glucose is mediated mainly by the sodium-glucose cotransporter, SGLT1. Previous studies using quantitative PCR showed that SGLT1 mRNA was induced in the yolk sac and in the small intestine prior to hatch. However, PCR analysis did not allow for the localization of cells expressing SGLT1 mRNA. The objective of this study was to use in situ hybridization to identify cells in the yolk sac and small intestine that expressed SGLT1 mRNA during the transition from late embryogenesis to early post-hatch. Expression of SGLT1 mRNA in yolk sac epithelial cells was low from embryonic d 11 to 17, peaked at embryonic d 19, and declined at day of hatch. In the small intestine, cells expressing SGLT1 mRNA were present not only along the intestinal villi but also in the crypts. There was greater expression of SGLT1 mRNA in the intestinal epithelial cells that line the villus than in the olfactomedin 4-expressing stem cells located in the crypts. The latter result suggests that stem cells have the ability to import glucose. Expression of SGLT1 mRNA in the intestine increased from embryonic d 19 to day of hatch and then maintained a high level of expression from d 1 to d 7 post-hatch. For both the yolk sac and small intestine, the temporal pattern of SGLT1 mRNA expression detected by in situ hybridization was consistent with the pattern revealed by PCR.

Characterization of the Activity and Distribution of a 2'-O-Methoxyethyl-modified Antisense Oligonucleotide in Models of Acute and Chronic Kidney Disease.

Nucleic Acid Ther.

2018 Aug 22

Donner AJ, Bell TA, Greenlee S, Graham MJ, Crooke RM.
PMID: 30133341 | DOI: 10.1089/nat.2018.0723

To determine if the pharmacokinetics and pharmacodynamics of gapmer antisense oligonucleotides (ASOs), containing phosphorothioate backbones and 2'-O-methoxyethyl RNA modifications (2'-MOE ASOs), can be altered by renal disease, a series of experiments were performed in models of chronic kidney disease (CKD) and acute kidney injury (AKI). In an adenine diet model of CKD, 2'-MOE ASO activity in the whole kidney was preserved and the reduction in target RNA was sustained for 2-4 weeks postdose. Additionally, 2'-MOE ASO distribution within the kidney was altered in mice with CKD, in that ASO delivery to cortical regions with tubular damage was reduced while distribution to the medulla was increased. Finally, the concentration of 2'-MOE ASO in liver of mice with CKD was elevated relative to mice without CKD, indicating a reduction in renal function and ASO excretion can potentially alter the systemic delivery of 2'-MOE ASOs. These data were generally reproduced in an aristolochic acid model of AKI, with the exception that 2'-MOE ASO activity in the whole kidney was slightly reduced with acute injury. The results from these studies have important implications for the development of 2'-MOE ASO therapeutics as both renal and extrarenal 2'-MOE ASO pharmacokinetics and pharmacodynamics may be altered in patients with renal disease. Importantly, the underlying mechanisms that alter 2'-MOE ASO distribution in the context of kidney disease warrant further examination.

Integrative Analysis of Programmed Death-Ligand 1 DNA, mRNA, and Protein Status and their Clinicopathological Correlation in Diffuse Large B-cell Lymphoma.

Histopathology. 2018 Oct 4.

2018 Oct 04

Sun C, Jia Y, Wang W, Bi R, Wu L, Bai Q, Zhou X.
PMID: 30286249 | DOI: 10.1111/his.13765

Abstract AIMS: The Protein expression of Programmed Death-Ligand 1 (PD-L1) has been recognized a poor prognostic biomarker in diffuse large B-cell lymphoma (DLBCL). We aim to detect PD-L1 DNA and mRNA status, and explore whether they contribute to protein expression and their clinicopathological correlation in DLBCL. METHODS AND RESULTS: In the study, we detected PD-L1 status in three different levels by Fluorescence in situ hybridization, RNA in situ hybridization and immunohistochemistry in 287 DLBCL samples with follow-ups, respectively. Their correlation and clinical pathological relevance was further analyzed. Our results showed that 1.7% (3/175) patients had PD-L1 amplification, 19.9% (57/287) PD-L1 mRNA high expression and 11.8% (34/287) high protein expression. Both mRNA and protein high expression of PD-L1 was significantly elevated in non-GCB than that in GCB DLBCL (P<0.05). In addition, the patients with PD-L1 mRNA or protein high expression but not DNA amplification have significantly poorer overall survival (OS) than that with PD-L1 low expression (P<0.05). Furthermore, we found that PD-L1 mRNA and protein expression are highly correlated (P=0.012), which was observed in all three samples with PD-L1 DNA amplification. CONCLUSIONS: PD-L1 DNA amplification is a rare event, PD-L1 mRNA mainly contribute to the protein high expression, and the latter two will serve as important biomarkers for predicting prognosis and selecting patients for immunotherapy in DLBCL.

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Description
sense
Example: Hs-LAG3-sense
Standard probes for RNA detection are in antisense. Sense probe is reverse complent to the corresponding antisense probe.
Intron#
Example: Mm-Htt-intron2
Probe targets the indicated intron in the target gene, commonly used for pre-mRNA detection
Pool/Pan
Example: Hs-CD3-pool (Hs-CD3D, Hs-CD3E, Hs-CD3G)
A mixture of multiple probe sets targeting multiple genes or transcripts
No-XSp
Example: Hs-PDGFB-No-XMm
Does not cross detect with the species (Sp)
XSp
Example: Rn-Pde9a-XMm
designed to cross detect with the species (Sp)
O#
Example: Mm-Islr-O1
Alternative design targeting different regions of the same transcript or isoforms
CDS
Example: Hs-SLC31A-CDS
Probe targets the protein-coding sequence only
EnEmProbe targets exons n and m
En-EmProbe targets region from exon n to exon m
Retired Nomenclature
tvn
Example: Hs-LEPR-tv1
Designed to target transcript variant n
ORF
Example: Hs-ACVRL1-ORF
Probe targets open reading frame
UTR
Example: Hs-HTT-UTR-C3
Probe targets the untranslated region (non-protein-coding region) only
5UTR
Example: Hs-GNRHR-5UTR
Probe targets the 5' untranslated region only
3UTR
Example: Rn-Npy1r-3UTR
Probe targets the 3' untranslated region only
Pan
Example: Pool
A mixture of multiple probe sets targeting multiple genes or transcripts

Enabling research, drug development (CDx) and diagnostics

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