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Wang X, Wang JD, Li X, Wang T, Yao J, Deng R, Ma W, Liu S, Zhu Z. Tas2R143 regulates the expression of the Blood-Testis Barrier tight junction protein in TM4 cells through the NF-κB signaling pathway. Theriogenology 2024; 227:120-127. [PMID: 39059123 DOI: 10.1016/j.theriogenology.2024.07.005] [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: 09/24/2023] [Revised: 07/02/2024] [Accepted: 07/07/2024] [Indexed: 07/28/2024]
Abstract
Although bitter receptors, known as Tas2Rs, have been identified in the testes and mature sperm, their expression in testicular Sertoli cells (SCs) and their role in recognizing harmful substances to maintain the immune microenvironment remain unknown. To explore their potential function in spermatogenesis, this study utilized TM4 cells and discovered the high expression of the bitter receptor Tas2R143 in the cells. Interestingly, when the Tas2R143 gene was knocked down for 24 and 48 h, there was a significant downregulation (P < 0.05) in the expression of tight junction proteins (occludin and ZO-1) and NF-κB. Additionally, Western blot results demonstrated that the siRNA-133+NF-κB co-treatment group displayed a significant downregulation (P < 0.05) in the expression of occludin and ZO-1 compared to both the siRNA-133 transfection group and the NF-κB inhibitors treatment group. These findings suggest that Tas2R143 likely regulates the expression of occludin and ZO-1 through the NF-κB signaling pathway and provides a theoretical basis for studying the regulatory mechanism of bitter receptors in the reproductive system, aiming to attract attention to the chemical perception mechanism of spermatogenesis.
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Affiliation(s)
- Xue Wang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China; Key Laboratory of Exploration and Innovative Utilization of White Goose Germplasm Resources in the Cold Region of Hei Long Jiang Province, China
| | - Jin Dan Wang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China; Key Laboratory of Exploration and Innovative Utilization of White Goose Germplasm Resources in the Cold Region of Hei Long Jiang Province, China
| | - Xin Li
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China; Key Laboratory of Exploration and Innovative Utilization of White Goose Germplasm Resources in the Cold Region of Hei Long Jiang Province, China
| | - Tianrun Wang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China; Key Laboratory of Exploration and Innovative Utilization of White Goose Germplasm Resources in the Cold Region of Hei Long Jiang Province, China
| | - Jiaqi Yao
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China; Key Laboratory of Exploration and Innovative Utilization of White Goose Germplasm Resources in the Cold Region of Hei Long Jiang Province, China
| | - Ruxue Deng
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China; Key Laboratory of Exploration and Innovative Utilization of White Goose Germplasm Resources in the Cold Region of Hei Long Jiang Province, China
| | - Wenchang Ma
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China; Key Laboratory of Exploration and Innovative Utilization of White Goose Germplasm Resources in the Cold Region of Hei Long Jiang Province, China
| | - Shengjun Liu
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China; Key Laboratory of Exploration and Innovative Utilization of White Goose Germplasm Resources in the Cold Region of Hei Long Jiang Province, China.
| | - Zhanbo Zhu
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China.
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Bitter Taste Receptors Expression in Human Granulosa and Cumulus Cells: New Perspectives in Female Fertility. Cells 2021; 10:cells10113127. [PMID: 34831350 PMCID: PMC8619861 DOI: 10.3390/cells10113127] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 11/08/2021] [Accepted: 11/09/2021] [Indexed: 11/17/2022] Open
Abstract
Bitter taste receptors (TAS2RS) expression is not restricted to the oral cavity and the presence of these receptors in the male reproductive system and sperm provides insights into their possible role in human reproduction. To elucidate the potential role of TAS2Rs in the female reproductive system, we investigated the expression and localization of bitter taste receptors and the components of signal transduction cascade involved in the pathway of taste receptors in somatic follicular cells obtained from women undergoing assisted reproductive techniques. We found that TAS2R genes are expressed in both cumulus (CCs) and granulosa (GCs) cells, with TAS2R14 being the most highly expressed bitter receptor subtype. Interestingly, a slight increase in the expression of TAS2R14 and TAS2R43 was shown in both GCs and CCs in young women (p < 0.05), while a negative correlation may be established between the number of oocytes collected at the pickup and the expression of TAS2R43. Regarding α-gustducin and α-transducin, two Gα subunits expressed in the taste buds on the tongue, we provide evidence for their expression in CCs and GCs, with α-gustducin showing two additional isoforms in GCs. Finally, we shed light on the possible downstream transduction pathway initiated by taste receptor activation in the female reproductive system. Our study, showing for the first time the expression of taste receptors in the somatic ovarian follicle cells, significantly extends the current knowledge of the biological role of TAS2Rs for human female fertility.
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Brennan F, Stevenson J, Brown M. The Pathophysiology and Management of Taste Changes in Chronic Kidney Disease: A Review. J Ren Nutr 2020; 30:368-379. [PMID: 31983590 DOI: 10.1053/j.jrn.2019.11.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 10/15/2019] [Accepted: 11/11/2019] [Indexed: 11/11/2022] Open
Abstract
One of the most disabling, yet neglected, symptom of patients with chronic kidney disease (CKD) is alteration in taste. The purpose of this review is to examine the extent and content of research around this symptom in CKD with the goals of (1) identifying gaps in current research knowledge and (2) guiding future research. The review summarizes the basic anatomy and physiology of taste followed by analysis of the epidemiology, pathophysiology, and management strategies for taste changes in patients with CKD.
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Affiliation(s)
- Frank Brennan
- Department of Nephrology, St George Hospital, Sydney, New South Wales, Australia.
| | - Jessica Stevenson
- Department of Nephrology, St George Hospital, Sydney, New South Wales, Australia
| | - Mark Brown
- Department of Nephrology, St George Hospital, Sydney, New South Wales, Australia; Department of Medicine, University of New South Wales, Sydney, New South Wales, Australia
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Governini L, Semplici B, Pavone V, Crifasi L, Marrocco C, De Leo V, Arlt E, Gudermann T, Boekhoff I, Luddi A, Piomboni P. Expression of Taste Receptor 2 Subtypes in Human Testis and Sperm. J Clin Med 2020; 9:E264. [PMID: 31963712 PMCID: PMC7019805 DOI: 10.3390/jcm9010264] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 01/10/2020] [Accepted: 01/14/2020] [Indexed: 12/31/2022] Open
Abstract
Taste receptors (TASRs) are expressed not only in the oral cavity but also throughout the body, thus suggesting that they may play different roles in organ systems beyond the tongue. Recent studies showed the expression of several TASRs in mammalian testis and sperm, indicating an involvement of these receptors in male gametogenesis and fertility. This notion is supported by an impaired reproductive phenotype of mouse carrying targeted deletion of taste receptor genes, as well as by a significant correlation between human semen parameters and specific polymorphisms of taste receptor genes. To better understand the biological and thus clinical significance of these receptors for human reproduction, we analyzed the expression of several members of the TAS2Rs family of bitter receptors in human testis and in ejaculated sperm before and after in vitro selection and capacitation. Our results provide evidence for the expression of TAS2R genes, with TAS2R14 being the most expressed bitter receptor subtype in both testis tissue and sperm cells, respectively. In addition, it was observed that in vitro capacitation significantly affects both the expression and the subcellular localization of these receptors in isolated spermatozoa. Interestingly, α-gustducin and α-transducin, two Gα subunits expressed in taste buds on the tongue, are also expressed in human spermatozoa; moreover, a subcellular redistribution of both G protein α-subunits to different sub-compartments of sperm was registered upon in vitro capacitation. Finally, we shed light on the possible downstream transduction pathway initiated upon taste receptor activation in the male reproductive system. Performing ultrasensitive droplets digital PCR assays to quantify RNA copy numbers of a distinct gene, we found a significant correlation between the expression of TAS2Rs and TRPM5 (r = 0.87), the cation channel involved in bitter but also sweet and umami taste transduction in taste buds on the tongue. Even if further studies are needed to clarify the precise functional role of taste receptors for successful reproduction, the presented findings significantly extend our knowledge of the biological role of TAS2Rs for human male fertility.
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Affiliation(s)
- Laura Governini
- Department of Molecular and Developmental Medicine, Siena University, 53100 Siena, Italy; (L.G.); (B.S.); (V.P.); (L.C.); (C.M.); (V.D.L.); (P.P.)
| | - Bianca Semplici
- Department of Molecular and Developmental Medicine, Siena University, 53100 Siena, Italy; (L.G.); (B.S.); (V.P.); (L.C.); (C.M.); (V.D.L.); (P.P.)
| | - Valentina Pavone
- Department of Molecular and Developmental Medicine, Siena University, 53100 Siena, Italy; (L.G.); (B.S.); (V.P.); (L.C.); (C.M.); (V.D.L.); (P.P.)
| | - Laura Crifasi
- Department of Molecular and Developmental Medicine, Siena University, 53100 Siena, Italy; (L.G.); (B.S.); (V.P.); (L.C.); (C.M.); (V.D.L.); (P.P.)
| | - Camilla Marrocco
- Department of Molecular and Developmental Medicine, Siena University, 53100 Siena, Italy; (L.G.); (B.S.); (V.P.); (L.C.); (C.M.); (V.D.L.); (P.P.)
| | - Vincenzo De Leo
- Department of Molecular and Developmental Medicine, Siena University, 53100 Siena, Italy; (L.G.); (B.S.); (V.P.); (L.C.); (C.M.); (V.D.L.); (P.P.)
| | - Elisabeth Arlt
- Walther Straub Institute of Pharmacology and Toxicology, LMU Munich, 80336 Muenchen, Germany; (E.A.); (T.G.); (I.B.)
| | - Thomas Gudermann
- Walther Straub Institute of Pharmacology and Toxicology, LMU Munich, 80336 Muenchen, Germany; (E.A.); (T.G.); (I.B.)
| | - Ingrid Boekhoff
- Walther Straub Institute of Pharmacology and Toxicology, LMU Munich, 80336 Muenchen, Germany; (E.A.); (T.G.); (I.B.)
| | - Alice Luddi
- Department of Molecular and Developmental Medicine, Siena University, 53100 Siena, Italy; (L.G.); (B.S.); (V.P.); (L.C.); (C.M.); (V.D.L.); (P.P.)
| | - Paola Piomboni
- Department of Molecular and Developmental Medicine, Siena University, 53100 Siena, Italy; (L.G.); (B.S.); (V.P.); (L.C.); (C.M.); (V.D.L.); (P.P.)
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Differential expression analysis throughout the weaning period in the mouse cerebral cortex. Biochem Biophys Res Commun 2013; 431:437-43. [PMID: 23333325 DOI: 10.1016/j.bbrc.2012.12.150] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2012] [Accepted: 12/22/2012] [Indexed: 02/05/2023]
Abstract
At weaning, mammals switch from drinking mother's milk to eating foods of environmental origin. These foods contain natural compounds with novel tastes and textures, which are provided to the young for the first time following the termination of breastfeeding. This novel eating experience may alter the cognitive brain function of mammalian babies, increasing their reactions to their food environments. Because the cerebral cortex is a central organ for cognition and learning, we investigated differences in whole-gene expression profiles in the mouse cerebral cortex using microarray analysis before and after weaning. Of 45,037 murine genes, 35 genes were upregulated and 31 genes were downregulated, in response to weaning. In particular, immediate early genes, molecular chaperones, and myelin-related genes were upregulated. In situ hybridization analysis revealed that the mRNA for an immediate early gene, Egr-2/KROX-20, was transported from the nucleus to the cell body at layer 5/6 of the somatosensory cortex during weaning. In contrast, in animals without any food supply other than mother's milk, Egr-2/KROX-20 mRNA was retained within the nucleus at the somatosensory cortex. These data suggest that the novel experience of food intake modulates gene expression profiles in the murine cerebral cortex at the weaning stage.
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Pratta GR, Rodríguez GR, Zorzoli R, Picardi LA, Valle EM. Biodiversity in a Tomato Germplasm for Free Amino Acid and Pigment Content of Ripening Fruits. ACTA ACUST UNITED AC 2011. [DOI: 10.4236/ajps.2011.22027] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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