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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Development (Cambridge, England)
2023 Apr 01
Qiu, T;Hutečková, B;Seppala, M;Cobourne, MT;Chen, Z;Hovořáková, M;Buchtová, M;Tucker, AS;
PMID: 36971701 | DOI: 10.1242/dev.201464
The vestibular lamina (VL) forms the oral vestibule, creating a gap between the teeth, lips and cheeks. In a number of ciliopathies, formation of the vestibule is defective, leading to the creation of multiple frenula. In contrast to the neighbouring dental lamina, which forms the teeth, little is known about the genes that pattern the VL. Here, we establish a molecular signature for the usually non-odontogenic VL in mice and highlight several genes and signalling pathways that may play a role in its development. For one of these, the Sonic hedgehog (Shh) pathway, we show that co-receptors Gas1, Cdon and Boc are highly expressed in the VL and act to enhance the Shh signal from the forming incisor region. In Gas1 mutant mice, expression of Gli1 was disrupted and the VL epithelium failed to extend due to a loss of proliferation. This defect was exacerbated in Boc/Gas1 double mutants and could be phenocopied using cyclopamine in culture. Signals from the forming teeth, therefore, control development of the VL, coordinating the development of the dentition and the oral cavity.
Cell
2023 Mar 24
Knaus, LS;Basilico, B;Malzl, D;Gerykova Bujalkova, M;Smogavec, M;Schwarz, LA;Gorkiewicz, S;Amberg, N;Pauler, FM;Knittl-Frank, C;Tassinari, M;Maulide, N;Rülicke, T;Menche, J;Hippenmeyer, S;Novarino, G;
PMID: 36996814 | DOI: 10.1016/j.cell.2023.02.037
Little is known about the critical metabolic changes that neural cells have to undergo during development and how temporary shifts in this program can influence brain circuitries and behavior. Inspired by the discovery that mutations in SLC7A5, a transporter of metabolically essential large neutral amino acids (LNAAs), lead to autism, we employed metabolomic profiling to study the metabolic states of the cerebral cortex across different developmental stages. We found that the forebrain undergoes significant metabolic remodeling throughout development, with certain groups of metabolites showing stage-specific changes, but what are the consequences of perturbing this metabolic program? By manipulating Slc7a5 expression in neural cells, we found that the metabolism of LNAAs and lipids are interconnected in the cortex. Deletion of Slc7a5 in neurons affects the postnatal metabolic state, leading to a shift in lipid metabolism. Additionally, it causes stage- and cell-type-specific alterations in neuronal activity patterns, resulting in a long-term circuit dysfunction.
Cell reports
2022 Nov 22
Xu, L;Nirwane, A;Xu, T;Kang, M;Devasani, K;Yao, Y;
PMID: 36417884 | DOI: 10.1016/j.celrep.2022.111709
The function of fibroblasts in intracerebral hemorrhage (ICH) remains elusive. By targeting Col1α1, a fibroblast-specific marker, we generate mice with ablated Col1α1+ fibroblasts. These mutants show exacerbated blood-brain barrier (BBB) damage, enlarged injury volume, and worse neurological function, highlighting a beneficial role of Col1α1+ fibroblasts in ICH. Echoing these findings, fibroblasts significantly decrease endothelial permeability in an in vitro ICH model. Next, we demonstrate that fibroblasts promote BBB integrity in ICH mainly via up-regulating tight junction proteins without affecting transcytosis-associated proteins, indicating a paracellular rather than transcellular mechanism. A subsequent mechanistic study reveals that the BBB-protective effect of fibroblasts is partially mediated by TIMP metallopeptidase inhibitor 2 (TIMP2). Furthermore, we find that exogenous TIMP2 attenuates BBB disruption in these mutants after ICH. These results suggest that Col1α1+ fibroblasts repair BBB damage in ICH via the paracellular pathway in a TIMP2-dependent manner, and that Col1α1+ fibroblasts and TIMP2 may be targeted in ICH treatment.
Developmental cell
2022 Oct 24
Qian, X;DeGennaro, EM;Talukdar, M;Akula, SK;Lai, A;Shao, DD;Gonzalez, D;Marciano, JH;Smith, RS;Hylton, NK;Yang, E;Bazan, JF;Barrett, L;Yeh, RC;Hill, RS;Beck, SG;Otani, A;Angad, J;Mitani, T;Posey, JE;Pehlivan, D;Calame, D;Aydin, H;Yesilbas, O;Parks, KC;Argilli, E;England, E;Im, K;Taranath, A;Scott, HS;Barnett, CP;Arts, P;Sherr, EH;Lupski, JR;Walsh, CA;
PMID: 36228617 | DOI: 10.1016/j.devcel.2022.09.011
Kinesins are canonical molecular motors but can also function as modulators of intracellular signaling. KIF26A, an unconventional kinesin that lacks motor activity, inhibits growth-factor-receptor-bound protein 2 (GRB2)- and focal adhesion kinase (FAK)-dependent signal transduction, but its functions in the brain have not been characterized. We report a patient cohort with biallelic loss-of-function variants in KIF26A, exhibiting a spectrum of congenital brain malformations. In the developing brain, KIF26A is preferentially expressed during early- and mid-gestation in excitatory neurons. Combining mice and human iPSC-derived organoid models, we discovered that loss of KIF26A causes excitatory neuron-specific defects in radial migration, localization, dendritic and axonal growth, and apoptosis, offering a convincing explanation of the disease etiology in patients. Single-cell RNA sequencing in KIF26A knockout organoids revealed transcriptional changes in MAPK, MYC, and E2F pathways. Our findings illustrate the pathogenesis of KIF26A loss-of-function variants and identify the surprising versatility of this non-motor kinesin.
Glia
2022 Jun 27
Suo, N;He, B;Cui, S;Yang, Y;Wang, M;Yuan, Q;Xie, X;
PMID: 35758525 | DOI: 10.1002/glia.24233
Myelin sheath, formed by oligodendrocytes (OLs) in the central nervous system (CNS) and Schwann cells in periphery, plays a critical role in supporting neuronal functions. OLs, differentiated from oligodendrocyte precursor cells (OPCs), are important for myelination during development and myelin repair in CNS demyelinating disease. To identify mechanisms of myelin development and remyelination after myelin damage is of great clinical interest. Here we show that the orphan G protein-coupled receptor GPR149, enriched in OPCs, negatively regulate OPC to OL differentiation, myelination, as well as remyelination. The expression of GPR149 is downregulated during OPCs differentiation into OLs. GPR149 deficiency does not affect the number of OPCs, but promotes OPC to OL differentiation which results in earlier development of myelin. In cuprizone-induced demyelination model, GPR149 deficiency significantly enhances myelin regeneration. Further study indicates that GPR149 may regulate OL differentiation and myelin formation via MAPK/ERK pathway. Our study suggests that deleting or blocking GPR149 might be an intriguing way to promote myelin repair in demyelinating diseases.
iScience
2022 Jul 01
Zinani, O;Keseroğlu, K;Dey, S;Ay, A;Singh, A;Özbudak, E;
| DOI: 10.1016/j.isci.2022.104579
Timely progression of a genetic program is critical for embryonic development. However, gene expression involves inevitable fluctuations in biochemical reactions leading to substantial cell-to-cell variability (gene expression noise). One of the important questions in developmental biology is how pattern formation is reproducibly executed despite these unavoidable fluctuations in gene expression. Here, we studied the transcriptional variability of two paired zebrafish segmentation clock genes (her1 and her7) in multiple genetic backgrounds. Segmentation clock genes establish an oscillating self-regulatory system, presenting a challenging yet beautiful system in studying control of transcription variability. In this study, we found that a negative feedback loop established by the Her1 and Her7 proteins minimizes uncorrelated variability whereas gene copy number affects variability of both RNAs in a similar manner (correlated variability). We anticipate that these findings will help analyze the precision of other natural clocks and inspire the ideas for engineering precise synthetic clocks in tissue engineering.
Molecular therapy. Nucleic acids
2021 Dec 03
Bouwman, LF;den Hamer, B;van den Heuvel, A;Franken, M;Jackson, M;Dwyer, CA;Tapscott, SJ;Rigo, F;van der Maarel, SM;de Greef, JC;
PMID: 34729250 | DOI: 10.1016/j.omtn.2021.09.010
Facioscapulohumeral muscular dystrophy (FSHD) is one of the most prevalent skeletal muscle dystrophies. Skeletal muscle pathology in individuals with FSHD is caused by inappropriate expression of the transcription factor DUX4, which activates different myotoxic pathways. At the moment there is no molecular therapy that can delay or prevent skeletal muscle wasting in FSHD. In this study, a systemically delivered antisense oligonucleotide (ASO) targeting the DUX4 transcript was tested in vivo in ACTA1-MCM;FLExDUX4 mice that express DUX4 in skeletal muscles. We show that the DUX4 ASO was well tolerated and repressed the DUX4 transcript, DUX4 protein, and mouse DUX4 target gene expression in skeletal muscles. In addition, the DUX4 ASO alleviated the severity of skeletal muscle pathology and partially prevented the dysregulation of inflammatory and extracellular matrix genes. DUX4 ASO-treated ACTA1-MCM;FLExDUX4 mice performed better on a treadmill; however, the hanging grid and four-limb grip strength tests were not improved compared to control ASO-treated ACTA1-MCM;FLExDUX4 mice. This study shows that systemic delivery of ASOs targeting DUX4 is a promising therapeutic strategy for FSHD and strategies that further improve the ASO efficacy in skeletal muscle are warranted.
Laminin alpha 5 regulates mammary gland remodeling through luminal cell differentiation and Wnt4-mediated epithelial crosstalk
Development (Cambridge, England)
2021 Jun 15
Englund, JI;Ritchie, A;Blaas, L;Cojoc, H;Pentinmikko, N;Döhla, J;Iqbal, S;Patarroyo, M;Katajisto, P;
PMID: 34128985 | DOI: 10.1242/dev.199281
Epithelial attachment to the basement membrane (BM) is essential for mammary gland development, yet the exact roles of specific BM components remain unclear. Here, we show that Laminin α5 (Lama5) expression specifically in the luminal epithelial cells is necessary for normal mammary gland growth during puberty, and for alveologenesis during pregnancy. Lama5 loss in the keratin 8-expressing cells results in reduced frequency and differentiation of hormone receptor expressing (HR+) luminal cells. Consequently, Wnt4-mediated crosstalk between HR+ luminal cells and basal epithelial cells is compromised during gland remodeling, and results in defective epithelial growth. The effects of Lama5 deletion on gland growth and branching can be rescued by Wnt4 supplementation in the in vitro model of branching morphogenesis. Our results reveal a surprising role for BM-protein expression in the luminal mammary epithelial cells, and highlight the function of Lama5 in mammary gland remodeling and luminal differentiation.
Microbial exposure during early human development primes fetal immune cells
Cell
2021 May 25
Mishra, A;Lai, GC;Yao, LJ;Aung, TT;Shental, N;Rotter-Maskowitz, A;Shepherdson, E;Singh, GSN;Pai, R;Shanti, A;Wong, RMM;Lee, A;Khyriem, C;Dutertre, CA;Chakarov, S;Srinivasan, KG;Shadan, NB;Zhang, XM;Khalilnezhad, S;Cottier, F;Tan, ASM;Low, G;Chen, P;Fan, Y;Hor, PX;Lee, AKM;Choolani, M;Vermijlen, D;Sharma, A;Fuks, G;Straussman, R;Pavelka, N;Malleret, B;McGovern, N;Albani, S;Chan, JKY;Ginhoux, F;
PMID: 34077752 | DOI: 10.1016/j.cell.2021.04.039
The human fetal immune system begins to develop early during gestation; however, factors responsible for fetal immune-priming remain elusive. We explored potential exposure to microbial agents in utero and their contribution toward activation of memory T cells in fetal tissues. We profiled microbes across fetal organs using 16S rRNA gene sequencing and detected low but consistent microbial signal in fetal gut, skin, placenta, and lungs in the 2nd trimester of gestation. We identified several live bacterial strains including Staphylococcus and Lactobacillus in fetal tissues, which induced in vitro activation of memory T cells in fetal mesenteric lymph node, supporting the role of microbial exposure in fetal immune-priming. Finally, using SEM and RNA-ISH, we visualized discrete localization of bacteria-like structures and eubacterial-RNA within 14th weeks fetal gut lumen. These findings indicate selective presence of live microbes in fetal organs during the 2nd trimester of gestation and have broader implications toward the establishment of immune competency and priming before birth. Crown
Transcription factor FOXP2 is a flow-induced regulator of collecting lymphatic vessels
The EMBO journal
2021 May 02
Hernández Vásquez, MN;Ulvmar, MH;González-Loyola, A;Kritikos, I;Sun, Y;He, L;Halin, C;Petrova, TV;Mäkinen, T;
PMID: 33934370 | DOI: 10.15252/embj.2020107192
The lymphatic system is composed of a hierarchical network of fluid absorbing lymphatic capillaries and transporting collecting vessels. Despite distinct functions and morphologies, molecular mechanisms that regulate the identity of the different vessel types are poorly understood. Through transcriptional analysis of murine dermal lymphatic endothelial cells (LECs), we identified Foxp2, a member of the FOXP family of transcription factors implicated in speech development, as a collecting vessel signature gene. FOXP2 expression was induced after initiation of lymph flow in vivo and upon shear stress on primary LECs in vitro. Loss of FOXC2, the major flow-responsive transcriptional regulator of lymphatic valve formation, abolished FOXP2 induction in vitro and in vivo. Genetic deletion of Foxp2 in mice using the endothelial-specific Tie2-Cre or the tamoxifen-inducible LEC-specific Prox1-CreERT2 line resulted in enlarged collecting vessels and defective valves characterized by loss of NFATc1 activity. Our results identify FOXP2 as a new flow-induced transcriptional regulator of collecting lymphatic vessel morphogenesis and highlight the existence of unique transcription factor codes in the establishment of vessel-type-specific endothelial cell identities.
Absence of MMACHC in peripheral retinal cells does not lead to an ocular phenotype in mice
Biochimica et biophysica acta. Molecular basis of disease
2021 Jun 17
Kiessling, E;Nötzli, S;Todorova, V;Forny, M;Baumgartner, MR;Samardzija, M;Krijt, J;Kožich, V;Grimm, C;Froese, DS;
PMID: 34147638 | DOI: 10.1016/j.bbadis.2021.166201
Combined methylmalonic aciduria with homocystinuria (cblC type) is a rare disease caused by mutations in the MMACHC gene. MMACHC encodes an enzyme crucial for intracellular vitamin B12 metabolism, leading to the accumulation of toxic metabolites e.g. methylmalonic acid (MMA) and homocysteine (Hcy), and secondary disturbances in folate and one-carbon metabolism when not fully functional. Patients with cblC deficiency often present in the neonatal or early childhood period with a severe multisystem pathology, which comprises a broad spectrum of treatment-resistant ophthalmological phenotypes, including retinal degeneration, impaired vision, and vascular changes. To examine the potential function of MMACHC in the retina and how its loss may impact disease, we performed gene expression studies in human and mouse, which showed that local expression of MMACHC in the retina and retinal pigment epithelium is relatively stable over time. To study whether functional MMACHC is required for retinal function and tissue integrity, we generated a transgenic mouse lacking Mmachc expression in cells of the peripheral retina. Characterization of this mouse revealed accumulation of cblC disease related metabolites, including MMA and the folate-dependent purine synthesis intermediates AICA-riboside and SAICA-riboside in the retina. Nevertheless, fundus appearance, morphology, vasculature, and cellular composition of the retina, as well as ocular function, remained normal in mice up to 6 or 12 months of age. Our data indicates that peripheral retinal neurons do not require intrinsic expression of Mmachc for survival and function and questions whether a local MMACHC deficiency is responsible for the retinal phenotypes in patients.
The Journal of biological chemistry
2023 Mar 22
Fu, Y;Miyazaki, K;Chiba, Y;Funada, K;Yuta, T;Tian, T;Mizuta, K;Kawahara, J;Zhang, L;Martin, D;Iwamoto, T;Takahashi, I;Fukumoto, S;Yoshizaki, K;
PMID: 36963497 | DOI: 10.1016/j.jbc.2023.104638
Lipid rafts are membrane microdomains rich in cholesterol, sphingolipids, glycosylphosphatidylinositol-anchored proteins (GPI-APs), and receptors. These lipid raft components are localized at the plasma membrane and are essential for signal transmission and organogenesis. However, few reports have been published on the specific effects of lipid rafts on tooth development. Using microarray and single-cell RNA sequencing methods, we found that a GPI-AP, lymphocyte antigen-6 (Ly6)/Plaur domain-containing 1 (Lypd1), was specifically expressed in preodontoblasts. Depletion of Lypd1 in tooth germ using an ex vivo organ culture system and in mouse dental pulp (mDP) cells resulted in the inhibition of odontoblast differentiation. Activation of bone morphogenetic protein (BMP) signaling by BMP2 treatment in mDP cells promoted odontoblast differentiation via phosphorylation of Smad1/5/8, while this BMP2-mediated odontoblast differentiation was inhibited by depletion of Lypd1. Furthermore, we created a deletion construct of the C-terminus containing the omega site in LYPD1; this site is necessary for localizing GPI-APs to the plasma membrane and lipid rafts. We identified that this site is essential for odontoblast differentiation and morphological change of mDP cells. These findings demonstrated that LYPD1 is a novel marker of preodontoblasts in the developing tooth; additionally, they suggest that LYPD1 is important for tooth development and that it plays a pivotal role in odontoblast differentiation by regulating Smad1/5/8 phosphorylation through its effect as a GPI-AP in lipid rafts.
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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 | |
| EnEm | Probe targets exons n and m | |
| En-Em | Probe 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 | |
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