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ceacam1

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https://www.readbyqxmd.com/read/29760215/specific-binding-to-differentially-expressed-human-ceacams-determines-the-outcome-of-neisseria-gonorrhoeae-infections-along-the-female-reproductive-tract
#1
Epshita A Islam, Varun C Anipindi, Ian Francis, Yazdan Shaik-Dasthagirisaheb, Stacey Xu, Nelly Leung, Anna Sintsova, Mohsen Amin, Charu Kaushic, Lee M Wetzler, Scott D Gray-Owen
The gonococcal Opa proteins are an antigenically variable family of surface adhesins that bind human CEACAM1, CEACAM3, CEACAM5 and/or CEACAM6, cell surface glycoproteins that are differentially expressed on a broad spectrum of human cells and tissues. While presumed to be important for infection, the significance of various Opa-CEACAM mediated cellular interactions in the context of the genital tract has remained unclear. Here, we observe that CEACAM1 and CEACAM5 are differentially expressed on epithelia lining the upper and lower portions of the human female genital tract, respectively...
May 14, 2018: Infection and Immunity
https://www.readbyqxmd.com/read/29746166/endothelial-barrier-function-is-differentially-regulated-by-ceacam1-mediated-signaling
#2
Sharang Ghavampour, Florian Kleefeldt, Heike Bömmel, Julian Volland, Alexander Paus, Andrea Horst, Verena Pfeiffer, Stefan Hübner, Nicole Wagner, Uwe Rueckschloss, Süleyman Ergün
Carcinoembryonic antigen-related cell adhesion molecule-1 (CEACAM1) is known to be crucial to vasculogenesis and angiogenesis. Recently, CEACAM1 deficiency was shown to result in the formation of aortic plaque-like lesions, indicating a role for CEACAM1 in adult vessels as well. The underlying mechanisms remained largely elusive. Therefore, we aimed to elucidate the role of CEACAM1 in endothelial homeostasis. Here, we show that CEACAM1 deficiency causes subcellular eNOS redistribution in endothelial cells ( i...
May 10, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29720400/interferon-regulatory-factor-1-and-a-variant-of-heterogeneous-nuclear-ribonucleoprotein-l-coordinately-silence-the-gene-for-adhesion-protein-ceacam1
#3
Kenneth J Dery, Craig Silver, Lu Yang, John E Shively
The adhesion protein Carcinoembryonic antigen-related cell adhesion molecule 1 (CEACAM1) is widely expressed in epithelial cells as a short cytoplasmic isoform (S-iso) and in leukocytes as a long cytoplasmic isoform (L-iso) and is frequently silenced in cancer by unknown mechanisms. Previously, we reported that interferon response factor 1 (IRF1) biases alternative splicing (AS) to include the variable exon 7 in CEACAM1, generating L-iso. We now show that IRF1 and a variant of heterogeneous nuclear ribonucleoprotein L (Lv1) coordinately silence the CEACAM1 gene...
May 2, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29671116/mpdu1-regulates-ceacam1-and-cell-adhesion-in-vitro-and-in-vivo
#4
Daniel C Bennett, Aurelie Cazet, Jon Charest, Joseph N Contessa
N-linked glycosylation (NLG) is a co-translational modification that is essential for the folding, stability, and trafficking of transmembrane (TM) and secretory glycoproteins. Efficient NLG requires the stepwise synthesis and en bloc transfer of a 14-sugar carbohydrate known as a lipid-linked oligosaccharide (LLO). The genetics of LLO biosynthesis have been established in yeast and Chinese hamster systems, but human models of LLO biosynthesis are lacking. In this study we report that Kato III human gastric cancer cells represent a model of deficient LLO synthesis, possessing a homozygous deletion of the LLO biosynthesis factor, MPDU1...
April 18, 2018: Glycoconjugate Journal
https://www.readbyqxmd.com/read/29558679/regulation-of-ceacam1-protein-expression-by-the-transcription-factor-ets-1-in-braf-mutant-human-metastatic-melanoma-cells
#5
Karin Kfir-Elirachman, Rona Ortenberg, Bella Vizel, Michal J Besser, Iris Barshack, Jacob Schachter, Yael Nemlich, Gal Markel
BRAF becomes constitutively activated in 50% to 70% of melanoma cases. CEACAM1 has a dual role in melanoma, including facilitation of cell proliferation and suppression of infiltrating lymphocytes, which are consistent with its value as a marker for poor prognosis in melanoma patients. Here we show that BRAFV600E melanoma cells treated with BRAF and MEK inhibitors (MAPKi) downregulate CEACAM1 mRNA and protein expression in a dose- and exposure time-dependent manners. Indeed, there is a significant correlation between the presence of BRAFV600E and CEACAM1 expression in melanoma specimens obtained from 45 patients...
March 17, 2018: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/29544443/alternative-splicing-after-gene-duplication-drives-ceacam1-paralog-diversification-in-the-horse
#6
Sophie Mißbach, Denis Aleksic, Lisa Blaschke, Timm Hassemer, Kyung Jin Lee, Martin Mansfeld, Jana Hänske, Johannes Handler, Robert Kammerer
BACKGROUND: The CEA gene family is one of the most rapidly evolving gene families in the human genome. The founder gene of the family is thought to be an ancestor of the inhibitory immune checkpoint molecule CEACAM1. Comprehensive analyses of mammalian genomes showed that the CEA gene family is subject to tremendous gene family expansion and contraction events in different mammalian species. While in some species (e.g. rabbits) less than three CEACAM1 related genes exist, were in others (certain microbat species) up to 100 CEACAM1 paralogs identified...
March 15, 2018: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/29486474/characterizing-the-tumor-suppressor-role-of-ceacam1-in-multiple-myeloma
#7
Jinge Xu, Bin Liu, Shoubao Ma, Jubin Zhang, Yuhan Ji, Liangjing Xu, Mingqing Zhu, Suning Chen, Xiaojin Wu, Depei Wu
BACKGROUND/AIMS: Carcinoembryonic antigen-related cell adhesion molecule 1 (CEACAM1), also known as CD66a, is a member of the immunoglobulin (Ig) superfamily that belongs to the carcinoembryonic antigen (CEA) family which plays a dual role in cancer. Previous studies showed high expression of CEACAM1 in multiple myeloma (MM). The aim of this study was to investigate the biological consequences of CEACAM1 overexpression in MM. METHODS: pEGFP-N1-CEACAM1 and pcDNA3...
2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29467871/abnormal-expression-of-circulating-and-tumor-infiltrating-carcinoembryonic-antigen-related-cell-adhesion-molecule-1-in-patients-with-glioma
#8
Jinhu Li, Xiaodong Liu, Yijun Duan, Hongqin Wang, Wen Su, Yazhou Wang, Guotao Zhuang, Yimin Fan
Glioma, the most prevalent primary tumor of the central nervous system, is known to evade immune surveillance and escape immune attacks by inducing immunosuppression. The homophilic interactions of the carcinoembryonic antigen-related cell adhesion molecule 1 (CEACAM1) serve a critical function in immunoregulation. In the present study, the expression levels of CEACAM1 in peripheral blood mononuclear cells and tumor-infiltrating lymphocytes (TILs) from patients with gliomas were assessed. Furthermore, associations between CEACAM1 expression and multiple clinicopathological characteristics in patients with gliomas were analyzed...
March 2018: Oncology Letters
https://www.readbyqxmd.com/read/29436278/assessing-the-impact-of-targeting-ceacam1-in-head-and-neck-squamous-cell-carcinoma
#9
Kenric Tam, David W Schoppy, June Ho Shin, Joshua K Tay, Uriel Moreno-Nieves, David C Mundy, John B Sunwoo
Objective In conjunction with advances made in cytotoxic chemotherapy, radiation, and surgery, immunotherapy has emerged as a fourth modality of treatment for head and neck squamous cell carcinoma (HNSCC). Understanding the mechanisms by which HNSCC evades immune-mediated control will aid in the development of new therapies to augment an antitumor immune response. Carcinoembryonic antigen-related cell adhesion molecule 1 (CEACAM1) is a cell surface receptor that is expressed on malignant cells and lymphocytes such as natural killer (NK) cells...
February 1, 2018: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/29427637/ceacam1-resists-hypoxia-induced-inhibition-of-tube-formation-of-human-dermal-lymphatic-endothelial-cells
#10
Qi Xie, Xiaocui Chen, Yinghua Xu, Jing Liang, Fufang Wang, Ju Liu
Tube formation is one of the fundamental events required by angiogenesis and lymphangiogenesis. To date, there is little knowledge on the effects of hypoxia on tube formation of human dermal lymphatic endothelial cells (HDLECs). In this study, we found that tube formation of HDLECs was inhibited under hypoxic condition with decreased expressions of VEGF-D, CEACAM1 and Prox1 genes. However, hypoxia-induced inhibition of tube formation of HDLECs was reversed by conditional media from hypoxic tumor cells. After knockdown of CEACAM1 by siRNA transfection, tube formation of HDLECs was increased with elevated Prox1 expression, suggesting that CEACAM1 downregulates Prox1 and plays an inhibitory role in tube formation of HDLECs...
May 2018: Cellular Signalling
https://www.readbyqxmd.com/read/29404511/exenatide-induces-carcinoembryonic-antigen-related-cell-adhesion-molecule-1-expression-to-prevent-hepatic-steatosis
#11
Hilda E Ghadieh, Harrison T Muturi, Lucia Russo, Christopher C Marino, Simona S Ghanem, Saja S Khuder, Julie C Hanna, Sukanta Jash, Vishwajeet Puri, Garrett Heinrich, Cara Gatto-Weis, Kevin Y Lee, Sonia M Najjar
Exenatide, a glucagon-like peptide-1 receptor agonist, induces insulin secretion. Its role in insulin clearance has not been adequately examined. Carcinoembryonic antigen-related cell adhesion molecule 1 (CEACAM1) promotes hepatic insulin clearance to maintain insulin sensitivity. Feeding C57BL/6J mice a high-fat diet down-regulates hepatic Ceacam1 transcription to cause hyperinsulinemia, insulin resistance, and hepatic steatosis, as in Ceacam1 null mice ( Cc1 -/- ). Thus, we tested whether exenatide regulates Ceacam1 expression in high-fat diet-fed mice and whether this contributes to its insulin sensitizing effect...
January 2018: Hepatology Communications
https://www.readbyqxmd.com/read/29396368/liver-specific-rescuing-of-ceacam1-reverses-endothelial-and-cardiovascular-abnormalities-in-male-mice-with-null-deletion-of-ceacam1-gene
#12
Lucia Russo, Harrison T Muturi, Hilda E Ghadieh, Alexander M Wisniewski, Eric E Morgan, Syed S Quadri, Gavin P Landesberg, Helmy M Siragy, Guillermo Vazquez, Rosario Scalia, Rajesh Gupta, Sonia M Najjar
OBJECTIVE: Mice with global null mutation of Ceacam1 (Cc1-/- ), display impairment of insulin clearance that causes hyperinsulinemia followed by insulin resistance, elevated hepatic de novo lipogenesis, and visceral obesity. In addition, they manifest abnormal vascular permeability and elevated blood pressure. Liver-specific rescuing of Ceacam1 reversed all of the metabolic abnormalities in Cc1-/-liver+ mice. The current study examined whether Cc1-/- male mice develop endothelial and cardiac dysfunction and whether this relates to the metabolic abnormalities caused by defective insulin extraction...
March 2018: Molecular Metabolism
https://www.readbyqxmd.com/read/29377208/ceacam1-controls-il-2-dependent-regulatory-t-cell-induction-in-immune-mediated-hepatitis
#13
Andrea Kristina Horst, Claudia Wegscheid, Christoph Schaefers, Birgit Schiller, Katrin Neumann, Sebastian Lunemann, Annika E Langeneckert, Karl J Oldhafer, Christina Weiler-Normann, Karl S Lang, Bernhard B Singer, Marcus Altfeld, Linda Diehl, Gisa Tiegs
A dysbalance between effector T cells (Tconv) and regulatory T cells (Tregs) and impaired Tregs function can cause autoimmune liver disease. Therefore, it is important to identify molecular mechanisms that control Treg homeostasis. Carcinoembryonic antigen-related cell adhesion molecule 1 (CEACAM1, CD66a) is an immune co-receptor with dichotomous roles in T cell regulation: its short isoform (CEACAM1S) can activate T cells and induce Tregs, whereas its long isoform (CEACAM1L) containing two intracellular immune receptor tyrosine-based inhibitory motifs (ITIMs), can inhibit activated T cell function...
January 29, 2018: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/29211042/newly-emerging-immune-checkpoints-promises-for-future-cancer-therapy
#14
REVIEW
Robert J Torphy, Richard D Schulick, Yuwen Zhu
Cancer immunotherapy has been a great breakthrough, with immune checkpoint inhibitors leading the way. Despite the clinical effectiveness of certain immune checkpoint inhibitors, the overall response rate remains low, and the effectiveness of immunotherapies for many tumors has been disappointing. There is substantial interest in looking for additional immune checkpoint molecules that may act as therapeutic targets for cancer. Recent advances during the last decade have identified several novel immune checkpoint targets, including lymphocyte activation gene-3 (LAG-3), B and T lymphocyte attenuator (BTLA), programmed death-1 homolog (PD-1H), T-cell immunoglobulin and immunoreceptor tyrosine-based inhibitory motif domain (TIM-3)/carcinoembryonic antigen cell adhesion molecule 1 (CEACAM1), and the poliovirus receptor (PVR)-like receptors...
December 6, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29180203/ceacam1-is-associated-with-recurrence-after-hepatectomy-for-colorectal-liver-metastasis
#15
Shunsuke Yamaguchi, Shozo Yokoyama, Masaki Ueno, Shinya Hayami, Yasuyuki Mitani, Akihiro Takeuchi, John E Shively, Hiroki Yamaue
BACKGROUND: Carcinoembryonic antigen-related cell adhesion molecule 1 (CEACAM1) is re-expressed at the invasion front of colorectal cancer. CEACAM1 expression at metastatic sites remains to be investigated. The current study aims to clarify the association between CEACAM1 expression and recurrence after hepatectomy of colorectal liver metastasis and to address whether CEACAM1 induces tumor-initiating properties needed for growth at metastatic sites. METHODS: Immunohistochemical analyses for CEACAM1 were performed in 67 patients with liver metastasis of colorectal cancer who had undergone curative hepatectomy...
December 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/29065965/identification-of-specifically-activated-angiogenic-molecules-in-hmgb-1-induced-angiogenesis
#16
Won Kyu Kim, Yujin Kwon, Minhee Park, Seongju Yun, Ja-Young Kwon, Hoguen Kim
High-mobility group box-1 (HMGB-1) is expressed in almost all cells, and its dysregulated expression correlates with inflammatory diseases, ischemia, and cancer. Some of these conditions accompany HMGB-1-mediated abnormal angiogenesis. Thus far, the mechanism of HMGB-1-induced angiogenesis remains largely unknown. In this study, we performed time-dependent DNA microarray analysis of endothelial cells (ECs) after HMGB-1 or VEGF treatment. The pathway analysis of each gene set upregulated by HMGB-1 or VEGF showed that most HMGB-1-induced angiogenic pathways were also activated by VEGF, although the activation time and gene sets belonging to the pathways differed...
November 2017: BMB Reports
https://www.readbyqxmd.com/read/29059299/a-cautionary-tale-of-sense-antisense-gene-pairs-independent-regulation-despite-inverse-correlation-of-expression
#17
Ashish Goyal, Evgenij Fiškin, Tony Gutschner, Maria Polycarpou-Schwarz, Matthias Groß, Julia Neugebauer, Minakshi Gandhi, Maiwen Caudron-Herger, Vladimir Benes, Sven Diederichs
Long non-coding RNAs (lncRNAs) have been proven to play important roles in diverse cellular processes including the DNA damage response. Nearly 40% of annotated lncRNAs are transcribed in antisense direction to other genes and have often been implicated in their regulation via transcript- or transcription-dependent mechanisms. However, it remains unclear whether inverse correlation of gene expression would generally point toward a regulatory interaction between the genes. Here, we profiled lncRNA and mRNA expression in lung and liver cancer cells after exposure to DNA damage...
December 1, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28975984/levels-of-hbx-vegf-and-ceacam1-in-hbv-related-hepatocellular-carcinoma-and-their-correlation-with-cancer-prognosis
#18
C-S Mao, H Yin, H-B Ning, Z Peng, K Li, G-Q Ding
OBJECTIVE: Hepatitis B virus X protein (HBx), vascular endothelial growth factor (VEGF) and carcinoembryonic antigen related cell adhesion molecule 1 (CEACAM1), are related to HBV associated hepatocellular carcinoma (HCC). This study recruited HCC patients and employed the SMMC-7721 and L02 liver cell lines, to analyze the expression levels of HBx, VEGF and CEACAM1 in liver cancer and their correlation with the cancer prognosis. PATIENTS AND METHODS: HBV-related HCC patients were recruited from our hospital...
October 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28913658/liver-specific-reconstitution-of-ceacam1-reverses-the-metabolic-abnormalities-caused-by-its-global-deletion-in-male-mice
#19
Lucia Russo, Harrison T Muturi, Hilda E Ghadieh, Simona S Ghanem, Thomas A Bowman, Hye Lim Noh, Sezin Dagdeviren, Godwin Y Dogbey, Jason K Kim, Garrett Heinrich, Sonia M Najjar
AIMS/HYPOTHESIS: The carcinoembryonic antigen-related cell adhesion molecule 1 (CEACAM1) promotes insulin clearance. Mice with global null mutation (Cc1 -/- ) or with liver-specific inactivation (L-SACC1) of Cc1 (also known as Ceacam1) gene display hyperinsulinaemia resulting from impaired insulin clearance, insulin resistance, steatohepatitis and obesity. Because increased lipolysis contributes to the metabolic phenotype caused by transgenic inactivation of CEACAM1 in the liver, we aimed to further investigate the primary role of hepatic CEACAM1-dependent insulin clearance in insulin and lipid homeostasis...
December 2017: Diabetologia
https://www.readbyqxmd.com/read/28887602/correlation-between-immunohistochemical-staining-of-ceacam1-and-clinicopathological-findings-in-oral-pre-neoplastic-lesions-and-squamous-cell-carcinoma
#20
Oriana Simonetti, Guendalina Lucarini, Corrado Rubini, Antonio Zizzi, Simone Domenico Aspriello, Roberto Di Primio, Anna Maria Offidani
Squamous cell carcinoma of the oral cavity represents the sixth most common cancer worldwide and it is often preceded by pre-neoplastic lesions. Sometimes it is still difficult for pathologists to make objective differential diagnoses only on histological characteristics. Tumorigenesis is accompanied by altered expression of cell adhesion molecules, like carcinoembryonic antigen cell adhesion molecule (CEACAM)1. We wanted to investigative CEACAM1 in oral dysplastic lesions, carcinoma in situ (CIS) and oral squamous cell carcinoma (OSCC)...
March 2018: Medical Molecular Morphology
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