1
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Pate JL, Hughes CHK. Review: Luteal prostaglandins: mechanisms regulating luteal survival and demise in ruminants. Animal 2023; 17 Suppl 1:100739. [PMID: 37567666 DOI: 10.1016/j.animal.2023.100739] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 01/03/2023] [Accepted: 01/06/2023] [Indexed: 08/13/2023] Open
Abstract
The corpus luteum (CL) is critical for establishment and maintenance of pregnancy in all mammals. However, the fate of the CL in ruminants is dependent on the presence of a functional uterus or signals from a developing embryo to modify uterine function to ensure its own survival. The key molecule secreted by the uterus that must be modified is prostaglandin F2alpha (PGF2A). At the same time, there is evidence that mechanisms within the CL may influence the ability of PGF2A to cause luteolysis. This review focuses on prostaglandins and steroidogenic capacity as endogenous modulators of the sensitivity of the CL to exogenous PGF2A. Early luteal development and early pregnancy are two different luteal stages in which sensitivity of the CL to PGF2A renders it incapable, or less capable, respectively, of undergoing luteolysis in response to PGF2A compared to a midcycle CL. An analysis of molecular changes that occur during these two stages provides some novel insight into molecules and pathways worth exploring to explain the regulation of luteolytic capacity in corpora lutea of ruminants.
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Affiliation(s)
- J L Pate
- Department of Animal Science, Center for Reproductive Biology and Health, The Pennsylvania State University, AVBS Building, University Park, PA, USA.
| | - C H K Hughes
- Centre de recherche en reproduction et fertilité, Université de Montréal, 3200 rue Sicotte, St-Hyacinthe, QC J2S 7C6, Canada
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2
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Mara JN, Zhou LT, Larmore M, Johnson B, Ayiku R, Amargant F, Pritchard MT, Duncan FE. Ovulation and ovarian wound healing are impaired with advanced reproductive age. Aging (Albany NY) 2020; 12:9686-9713. [PMID: 32407290 PMCID: PMC7288922 DOI: 10.18632/aging.103237] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 03/31/2020] [Indexed: 12/14/2022]
Abstract
Aging is associated with reduced tissue remodeling efficiency and increased fibrosis, characterized by excess collagen accumulation and altered matrix degradation. Ovulation, the process by which an egg is released from the ovary, is one of the most dynamic cycles of tissue wounding and repair. Because the ovary is one of the first organs to age, ovulation and ovarian wound healing is impaired with advanced reproductive age. To test this hypothesis, we induced superovulation in reproductively young and old mice and determined the numbers of eggs ovulated and corpora lutea (CLs), the progesterone producing glands formed post-ovulation. Reproductively old mice ovulated fewer eggs and had fewer CLs relative to young controls. Moreover, reproductively old mice exhibited a greater number of oocytes trapped within CLs and expanded cumulus oocyte complexes within unruptured antral follicles, indicative of failed ovulation. In addition, post-ovulatory tissue remodeling was compromised with age as evidenced by reduced CL vasculature, increased collagen, decreased hyaluronan, decreased cell proliferation and apoptosis, impaired wound healing capacity, and aberrant morphology of the ovarian surface epithelium (OSE). These findings demonstrate that ovulatory dysfunction is an additional mechanism underlying the age-related loss of fertility beyond the reduction of egg quantity and quality.
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Affiliation(s)
- Jamie N. Mara
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Luhan T. Zhou
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Megan Larmore
- Department of Comparative Medicine, University of Washington, Seattle, WA 98195, USA
| | - Brian Johnson
- Department of Comparative Medicine, University of Washington, Seattle, WA 98195, USA
| | - Rebecca Ayiku
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Farners Amargant
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Michele T. Pritchard
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Francesca E. Duncan
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
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3
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Yao Y, Zhou L, Liao W, Chen H, Du Z, Shao C, Wang P, Ding K. HH1-1, a novel Galectin-3 inhibitor, exerts anti-pancreatic cancer activity by blocking Galectin-3/EGFR/AKT/FOXO3 signaling pathway. Carbohydr Polym 2018; 204:111-123. [PMID: 30366522 DOI: 10.1016/j.carbpol.2018.10.008] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 09/11/2018] [Accepted: 10/03/2018] [Indexed: 01/09/2023]
Abstract
Pancreatic ductal adenocarcinoma is a highly malignant gastrointestinal tumor. Molecular targeting therapy for pancreatic cancer is still limited. High expressed Galectin-3 in pancreatic cancer is positively correlated with disease progression, indicating that Galectin-3 can be employed as a predictor of poor prognosis. From safflower, we isolated and purified a homogeneous polysaccharide, HH1-1, which could bind to and inhibit Galectin-3. HH1-1 could block the interaction between Galectin-3 and EGFR. Following HH1-1 treatment, the binding ability between EGFR and Galectin-3 was reduced by 245.28 folds. HH1-1 could suppress pancreatic cancer cell proliferation, arrest the cell cycle in S phase, induce cell apoptosis, inhibit angiogenesis and impede tumor cell migration and invasion. Moreover, HH1-1 affected the Galectin-3/EGFR/AKT/FOXO3 signaling pathway and possessed anti-pancreatic cancer activity in vitro and in vivo, especially in patient-derived xenografts. Further study suggested that HH1-1 had almost no toxicity both in vitro and in vivo. This adds new evidence to suggest that HH1-1 could be a promising therapeutic agent and support the pursuit of the Galectin-3 as a target in pancreatic cancer treatment.
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Affiliation(s)
- Yanli Yao
- Glycochemistry & Glycobiology Lab, Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China, University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Beijing, 100049, China
| | - Lishuang Zhou
- Glycochemistry & Glycobiology Lab, Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China, University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Beijing, 100049, China
| | - Wenfeng Liao
- Glycochemistry & Glycobiology Lab, Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China, University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Beijing, 100049, China
| | - Huanjun Chen
- Glycochemistry & Glycobiology Lab, Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China, University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Beijing, 100049, China
| | - Zhenyun Du
- Glycochemistry & Glycobiology Lab, Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China, University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Beijing, 100049, China
| | - Chenghao Shao
- Department of General Surgery, Shanghai Changzheng hospital, Second Military Medical University, Shanghai, 200030, China
| | - Peipei Wang
- Glycochemistry & Glycobiology Lab, Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China, University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Beijing, 100049, China.
| | - Kan Ding
- Glycochemistry & Glycobiology Lab, Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China, University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Beijing, 100049, China.
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4
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Tamai R, Kobayashi-Sakamoto M, Kiyoura Y. Extracellular galectin-1 enhances adhesion to and invasion of oral epithelial cells by Porphyromonas gingivalis. Can J Microbiol 2018; 64:465-471. [PMID: 29544077 DOI: 10.1139/cjm-2017-0461] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Galectin-1 and galectin-3 are C-type lectin receptors that bind to lipopolysaccharide in the cell wall of gram-negative bacteria. In this study, we investigated the effects of galectin-1 and galectin-3 on adhesion to and invasion of the human gingival epithelial cell line Ca9-22 by Porphyromonas gingivalis, a periodontal pathogenic gram-negative bacterium. Recombinant galectin-1, but not galectin-3, enhanced P. gingivalis adhesion and invasion, although both galectins bound similarly to P. gingivalis. Flow cytometry also revealed that Ca9-22 cells express low levels of galectin-1 and moderate levels of galectin-3. Ca9-22 cells in which galectin-3 was knocked-down did not exhibit enhanced P. gingivalis adhesion and invasion. Similarly, specific antibodies to galectin-1 and galectin-3 did not inhibit P. gingivalis adhesion and invasion. These results suggest that soluble galectin-1, but not galectin-3, may exacerbate periodontal disease by enhancing the adhesion to and invasion of host cells by periodontal pathogenic bacteria.
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Affiliation(s)
- Riyoko Tamai
- Department of Oral Medical Science, Ohu University School of Dentistry, 31-1 Misumido, Tomitamachi, Koriyama, Fukushima 963-8611, Japan.,Department of Oral Medical Science, Ohu University School of Dentistry, 31-1 Misumido, Tomitamachi, Koriyama, Fukushima 963-8611, Japan
| | - Michiyo Kobayashi-Sakamoto
- Department of Oral Medical Science, Ohu University School of Dentistry, 31-1 Misumido, Tomitamachi, Koriyama, Fukushima 963-8611, Japan.,Department of Oral Medical Science, Ohu University School of Dentistry, 31-1 Misumido, Tomitamachi, Koriyama, Fukushima 963-8611, Japan
| | - Yusuke Kiyoura
- Department of Oral Medical Science, Ohu University School of Dentistry, 31-1 Misumido, Tomitamachi, Koriyama, Fukushima 963-8611, Japan.,Department of Oral Medical Science, Ohu University School of Dentistry, 31-1 Misumido, Tomitamachi, Koriyama, Fukushima 963-8611, Japan
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Liczbiński P, Bukowska B. Molecular mechanism of amygdalin action in vitro: review of the latest research. Immunopharmacol Immunotoxicol 2018; 40:212-218. [PMID: 29486614 DOI: 10.1080/08923973.2018.1441301] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Amygdalin, named as 'laetrile' and 'vitamin B-17' was initially supposed to be a safe drug for cancer treatment and was recognized by followers of natural medicine since it has been considered to be hydrolyzed only in cancer cells releasing toxic hydrogen cyanide (HCN), and thus destroying them. Unfortunately, current studies have shown that HCN is also released in normal cells, therefore it may not be safe for human organism. However, there have still been research works conducted on anti-cancer properties of this compound. In vitro experiments have shown induction of apoptosis by amygdalin as a result of increased expression of Bax protein and caspase-3 and reduced expression of antiapoptotic BcL-2protein. Amygdalin has also been shown to inhibit the adhesion of breast cancer cells, lung cancer cells and bladder cancer cells by decreased expression of integrin's, reduction of catenin levels and inhibition of the Akt-mTOR pathway, which may consequently lead to inhibition of metastases of cancer cells. It has also been revealed that amygdalin in renal cancer cells increased expression of p19 protein resulting in inhibition of cell transfer from G1-phase to S-phase, and thus inhibited cell proliferation. Other studies have indicated that amygdalin inhibits NF-kβ and NLRP3 signaling pathways, and consequently has anti-inflammatory effect due to reducing the expression of proinflammatory cytokines such as pro-IL-1β. Moreover, the effect of amygdalin on TGFβ/CTGF pathway, anti-fibrous activity and expression of follistatin resulting in activation of muscle cells growth has been reported. This compound might be applicable in the treatment of various cancer cell types.
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Affiliation(s)
- Przemysław Liczbiński
- a Department of Biophysics of Environmental Pollution, Faculty of Biology and Environmental Protection , University of Lodz , Lodz , Poland
| | - Bożena Bukowska
- a Department of Biophysics of Environmental Pollution, Faculty of Biology and Environmental Protection , University of Lodz , Lodz , Poland
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6
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Lu Y, Zhang M, Zhao P, Jia M, Liu B, Jia Q, Guo J, Dou L, Li J. Modified citrus pectin inhibits galectin-3 function to reduce atherosclerotic lesions in apoE-deficient mice. Mol Med Rep 2017; 16:647-653. [PMID: 28560429 PMCID: PMC5482107 DOI: 10.3892/mmr.2017.6646] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 01/27/2017] [Indexed: 12/18/2022] Open
Abstract
Galectin-3 is a carbohydrate-binding lectin, which has been implicated in the modulation of atherosclerotic pathophysiology, and is highly expressed in monocytes, macrophages and endothelial cells within atherosclerotic plaques. Modified citrus pectin (MCP) is produced from citrus pectin via pH and temperature modifications, which break it into shorter, non‑branched, galactose‑rich carbohydrate chains. MCP is able to tightly bind with galectin‑3, via recognition of its carbohydrate recognition domain, and facilitates the modulation of galectin‑3‑induced bioactivity. The present study explored the effects of MCP on the initiation of atherosclerosis. Eight‑week‑old apolipoprotein E‑deficient mice were treated with 1% MCP and fed an atherogenic diet for 4 weeks. The effects of MCP on atherosclerotic initiation were determined by pathological analysis and scanning electron microscope (SEM) imaging. MCP treatment reduced the size of atherosclerotic lesion areas, which was accompanied by decreased numbers of macrophages and smooth muscle cells (SMCs). Furthermore, SEM examination of the surface of the atheroma‑prone vessel wall indicated that MCP treatment reduced endothelial injury. To analyze the effects of MCP on monocyte adhesion, firstly, oxidized‑low density lipoprotein and various concentrations of MCP (0.025, 0.05, 0.1 and 0.25%) were incubated with the human umbilical vein endothelial cells (HUVECs) for stimulation and following this, the U937 cells were plated onto the HUVECs. The results revealed that MCP reduced the adhesion of U937 monocytes to HUVECs, indicating the adhesion-inhibiting effects of MCP. In conclusion, the present study revealed that MCP, a galectin‑3 inhibitor, reduced the size of atherosclerotic lesions by inhibiting the adhesion of leucocytes to endothelial cells. Inhibition of galectin‑3 function may be a therapeutic strategy for the treatment of atherosclerosis.
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Affiliation(s)
- Yonggang Lu
- Clinical Laboratory, Hebei General Hospital, Shijiazhuang, Hebei 050051, P.R. China
| | - Mingming Zhang
- Clinical Laboratory, Hebei General Hospital, Shijiazhuang, Hebei 050051, P.R. China
| | - Pei Zhao
- Clinical Laboratory, Hebei General Hospital, Shijiazhuang, Hebei 050051, P.R. China
| | - Min Jia
- Clinical Laboratory, Hebei General Hospital, Shijiazhuang, Hebei 050051, P.R. China
| | - Bing Liu
- Neurology Department 2, Handan Central Hospital, Handan, Hebei 056001, P.R. China
| | - Qian Jia
- Clinical Laboratory, Hebei General Hospital, Shijiazhuang, Hebei 050051, P.R. China
| | - Jun Guo
- Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, Ministry of Health, Beijing 100730, P.R. China
| | - Lin Dou
- Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, Ministry of Health, Beijing 100730, P.R. China
| | - Jian Li
- Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, Ministry of Health, Beijing 100730, P.R. China
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7
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Heo SD, Park C, Kim J, Ahn M, Shin T. Unilaminar follicular cells transiently express galectin-3 during ovarian folliculogenesis in pigs. Tissue Cell 2016; 49:106-111. [PMID: 27890351 DOI: 10.1016/j.tice.2016.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Revised: 10/24/2016] [Accepted: 11/04/2016] [Indexed: 11/26/2022]
Abstract
The localization of galectin-3, a β-galactoside-binding animal lectin, was immunohistochemically studied in the ovaries of pigs to determine its expression in ovarian folliculogenesis. Various stages of ovarian follicles were identified in the ovaries of adult pigs. Galectin-3 was immunostained in the squamous follicular cells surrounding oocytes in primordial follicles and in the unilaminar granulosa cells of primary follicles, but not in oocytes of multilaminar follicles (including primary, secondary, and tertiary Graafian follicles). As in adult ovaries, galectin-3 immunoreactivity was prominent in the unilaminar follicles in neonatal ovaries. Galectin-3 was also immunolocalized in the luteal cells in the corpus luteum and granulosa cells of atretic follicles as well as in interstitial macrophages in porcine ovaries. Collectively, these results suggest that galectin-3 is transiently expressed in follicular cells in the unilaminar ovarian follicles (primordial and primary) but not in multilaminar ovarian follicles (primary to tertiary), implying that galectin-3 is embryologically involved in ovum generation.
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Affiliation(s)
- Seung-Dam Heo
- Laboratory of Veterinary Anatomy, College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea; Hyundai Animal Hospital, Donghong-ro 48, Seogwipo-city, Jeju 63589, Republic of Korea
| | - Changnam Park
- Laboratory of Veterinary Anatomy, College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | - Jeongtae Kim
- Laboratory of Veterinary Anatomy, College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | - Meejung Ahn
- Laboratory of Veterinary Anatomy, College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | - Taekyun Shin
- Laboratory of Veterinary Anatomy, College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea.
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8
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Nio-Kobayashi J. Tissue- and cell-specific localization of galectins, β-galactose-binding animal lectins, and their potential functions in health and disease. Anat Sci Int 2016; 92:25-36. [PMID: 27590897 DOI: 10.1007/s12565-016-0366-6] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 08/17/2016] [Indexed: 01/13/2023]
Abstract
Fifteen galectins, β-galactose-binding animal lectins, are known to be distributed throughout the body. We herein summarize current knowledge on the tissue- and cell-specific localization of galectins and their potential functions in health and disease. Galectin-3 is widely distributed in epithelia, including the simple columnar epithelium in the gut, stratified squamous epithelium in the gut and skin, and transitional epithelium and several regions in nephrons in the urinary tract. Galectin-2 and galectin-4/6 are gut-specific, while galectin-7 is found in the stratified squamous epithelium in the gut and skin. The reproductive tract mainly contains galectin-1 and galectin-3, and their expression markedly changes during the estrous/menstrual cycle. The galectin subtype expressed in the corpus luteum (CL) changes in association with luteal function. The CL of women and cows displays a "galectin switch" with coordinated changes in the major galectin subtype and its ligand glycoconjugate structure. Macrophages express galectin-3, which may be involved in phagocytotic activity. Lymphoid tissues contain galectin-3-positive macrophages, which are not always stained with the macrophage marker, F4/80. Subsets of neurons in the brain and dorsal root ganglion express galectin-1 and galectin-3, which may contribute to the regeneration of damaged axons, stem cell differentiation, and pain control. The subtype-specific contribution of galectins to implantation, fibrosis, and diabetes are also discussed. The function of galectins may differ depending on the tissues or cells in which they act. The ligand glycoconjugate structures mediated by glycosyltransferases including MGAT5, ST6GAL1, and C2GnT are important for revealing the functions of galectins in healthy and disease states.
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Affiliation(s)
- Junko Nio-Kobayashi
- Laboratory of Histology and Cytology, Hokkaido University Graduate School of Medicine, Kita 15-Nishi 7, Kita-ku, Sapporo, 060-8638, Japan.
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Nio-Kobayashi J, Hashiba K, Sano M, Okuda K, Duncan WC, Iwanaga T. Expression Profiles and Possible Roles of Galectins in the Corpus Luteum. TRENDS GLYCOSCI GLYC 2016. [DOI: 10.4052/tigg.1416.1j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Junko Nio-Kobayashi
- Laboratory of Histology and Cytology, Hokkaido University Graduate School of Medicine
| | - Kazuhisa Hashiba
- Laboratory of Reproductive Physiology, Graduate School of Environmental and Life Science, Okayama University
| | - Masahiro Sano
- Laboratory of Reproductive Physiology, Graduate School of Environmental and Life Science, Okayama University
| | - Kiyoshi Okuda
- Laboratory of Reproductive Physiology, Graduate School of Environmental and Life Science, Okayama University
| | - W. Colin Duncan
- MRC Centre for Reproductive Health, The Queenʼs Medical Research Institute, The University of Edinburgh
| | - Toshihiko Iwanaga
- Laboratory of Histology and Cytology, Hokkaido University Graduate School of Medicine
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Nio-Kobayashi J, Hashiba K, Sano M, Okuda K, Duncan WC, Iwanaga T. Expression Profiles and Possible Roles of Galectins in the Corpus Luteum. TRENDS GLYCOSCI GLYC 2016. [DOI: 10.4052/tigg.1416.1e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Junko Nio-Kobayashi
- Laboratory of Histology and Cytology, Hokkaido University Graduate School of Medicine
| | - Kazuhisa Hashiba
- Laboratory of Reproductive Physiology, Graduate School of Environmental and Life Science, Okayama University
| | - Masahiro Sano
- Laboratory of Reproductive Physiology, Graduate School of Environmental and Life Science, Okayama University
| | - Kiyoshi Okuda
- Laboratory of Reproductive Physiology, Graduate School of Environmental and Life Science, Okayama University
| | - W. Colin Duncan
- MRC Centre for Reproductive Health, The Queenʼs Medical Research Institute, The University of Edinburgh
| | - Toshihiko Iwanaga
- Laboratory of Histology and Cytology, Hokkaido University Graduate School of Medicine
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Sano M, Hashiba K, Nio-Kobayashi J, Okuda K. The luteotrophic function of galectin-1 by binding to the glycans on vascular endothelial growth factor receptor-2 in bovine luteal cells. J Reprod Dev 2015; 61:439-48. [PMID: 26155753 PMCID: PMC4623150 DOI: 10.1262/jrd.2015-056] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The corpus luteum (CL) is a temporary endocrine gland producing a large amount of progesterone, which is essential for the establishment and maintenance of pregnancy. Galectin-1 is a β-galactose-binding protein that can modify functions of membrane glycoproteins and is expressed in the CL of mice and women. However, the physiological role of galectin-1 in the CL is unclear. In the present study, we investigated the expression and localization of galectin-1 in the bovine CL and the effect of galectin-1 on cultured luteal steroidogenic cells (LSCs) with special reference to its binding to the glycans on vascular endothelial growth factor receptor-2 (VEGFR-2). Galectin-1 protein was highly expressed at the mid and late luteal stages in the membrane fraction of bovine CL tissue and was localized to the surface of LSCs in a carbohydrate-dependent manner. Galectin-1 increased the viability in cultured LSCs. However, the viability of LSCs was decreased by addition of β-lactose, a
competitive carbohydrate inhibitor of galectin-1 binding activity. VEGFR-2 protein, like galectin-1, is also highly expressed in the mid CL, and it was modified by multi-antennary glycans, which can be recognized by galectin-1. An overlay assay using biotinylated galectin-1 revealed that galectin-1 directly binds to asparagine-linked glycans (N-glycans) on VEGFR-2. Enhancement of LSC viability by galectin-1 was suppressed by a selective inhibitor of VEGFR-2. The overall findings suggest that galectin-1 plays a role as a survival factor in the bovine CL, possibly by binding to N-glycans on VEGFR-2.
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Affiliation(s)
- Masahiro Sano
- Laboratory of Reproductive Physiology, Graduate School of Environmental and Life Science, Okayama University, Okayama 700-8530, Japan
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