1
|
Chen X, Li J, Xiang A, Guan H, Su P, Zhang L, Zhang D, Yu Q. BMP and activin receptor membrane bound inhibitor: BAMBI has multiple roles in gene expression and diseases (Review). Exp Ther Med 2024; 27:28. [PMID: 38125356 PMCID: PMC10728939 DOI: 10.3892/etm.2023.12316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 10/20/2023] [Indexed: 12/23/2023] Open
Abstract
BMP and activin membrane-bound inhibitor (BAMBI) is a transmembrane glycoprotein, known as a pseudo-receptor for TGFβ, as, while its extracellular domain is similar to that of type I TGFβ receptors, its intracellular structure is shorter and lacks a serine/threonine phosphokinase signaling motif. BAMBI can regulate numerous biological phenomena, including glucose and lipid metabolism, inflammatory responses, and cell proliferation and differentiation. Furthermore, abnormal expression of BAMBI at the mRNA and protein levels contributes to various human pathologies, including obesity and cancer. In the present review, the structure of BAMBI is briefly introduced and its associated signaling pathways and physiological functions are described. Understanding of BAMBI structure and function may contribute to knowledge regarding the occurrence of diseases, including obesity and diabetes, among others. The present review provides a theoretical foundation for the development of BAMBI as a potential biomarker or therapeutic target.
Collapse
Affiliation(s)
- Xiaochang Chen
- Shaanxi Key Laboratory of Ischemic Cardiovascular Diseases, Institute of Basic and Translational Medicine, Xi'an, Shaanxi 710021, P.R. China
- Department of Basic Medicine, Xi'an Medical University, Xi'an, Shaanxi 710021, P.R. China
| | - Jue Li
- Shaanxi Key Laboratory of Ischemic Cardiovascular Diseases, Institute of Basic and Translational Medicine, Xi'an, Shaanxi 710021, P.R. China
| | - Aoqi Xiang
- Shaanxi Key Laboratory of Ischemic Cardiovascular Diseases, Institute of Basic and Translational Medicine, Xi'an, Shaanxi 710021, P.R. China
| | - Hua Guan
- Shaanxi Key Laboratory of Ischemic Cardiovascular Diseases, Institute of Basic and Translational Medicine, Xi'an, Shaanxi 710021, P.R. China
| | - Peihong Su
- Shaanxi Key Laboratory of Ischemic Cardiovascular Diseases, Institute of Basic and Translational Medicine, Xi'an, Shaanxi 710021, P.R. China
| | - Lusha Zhang
- Shaanxi Key Laboratory of Ischemic Cardiovascular Diseases, Institute of Basic and Translational Medicine, Xi'an, Shaanxi 710021, P.R. China
| | - Dian Zhang
- Department of Basic Medicine, Xi'an Medical University, Xi'an, Shaanxi 710021, P.R. China
| | - Qi Yu
- Shaanxi Key Laboratory of Ischemic Cardiovascular Diseases, Institute of Basic and Translational Medicine, Xi'an, Shaanxi 710021, P.R. China
| |
Collapse
|
2
|
Lv X, Chen L, He S, Liu C, Han B, Liu Z, Yusupu M, Blair H, Kenyon P, Morris S, Li W, Liu M. Effect of Nutritional Restriction on the Hair Follicles Development and Skin Transcriptome of Chinese Merino Sheep. Animals (Basel) 2020; 10:ani10061058. [PMID: 32575477 PMCID: PMC7341508 DOI: 10.3390/ani10061058] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 06/08/2020] [Accepted: 06/17/2020] [Indexed: 12/12/2022] Open
Abstract
The high concentration of secondary branched wool follicles is a distinctive feature of the Merino sheep. At present, the molecular control of the development and branching of secondary wool follicles (SF) remains elusive. To reveal the potential genes associated with the development of hair follicles, we investigated the characteristics of prenatal and postnatal development of wool follicles, and the transcriptional expression profile in fetuses/lambs from dams under either maternal maintenance or sub-maintenance (75% maintenance) nutrition. The density of SF and the ratio of SF to primary wool follicles (PF) were reduced (p < 0.05) in fetuses from day 105 to 135 of gestation under sub-maintenance nutrition. Differentially expressed genes were enriched in the binding, single-organism process, cellular process, cell and cell part Gene Ontology (GO) functional categories and metabolism, apoptosis, and ribosome pathways. Four candidate genes, SFRP4, PITX1, BAMBI, and KRT16, which were involved in secondary wool follicles branching and development, were identified. Our results indicate that nutritional intervention imposed on pregnant ewes by short-term sub-maintenance nutrition could provide a strategy for the study of wool follicle development. Overall insight into the global gene expression associated with SF development can be used to investigate the underlying mechanisms of SF branching in Merino sheep.
Collapse
Affiliation(s)
- Xuefeng Lv
- College of Life Science and Technology, Xinjiang University, Urmuqi 830000, China;
- Institute of Animal Husbandry Quality Standards, Xinjiang Academy of Animal Sciences, Urmuqi 830000, China
| | - Lei Chen
- Key Laboratory of Genetics, Breeding & Reproduction of Grass-Feeding Livestock, Ministry of Agriculture, Urmuqi 830000, China; (L.C.); (S.H.); (C.L.); (B.H.); (Z.L.); (M.Y.)
- Key Laboratory of Animal Biotechnology of Xinjiang Institute of Animal Biotechnology, Xinjiang Academy of Animal Science, Urmuqi 830000, China
| | - Sangang He
- Key Laboratory of Genetics, Breeding & Reproduction of Grass-Feeding Livestock, Ministry of Agriculture, Urmuqi 830000, China; (L.C.); (S.H.); (C.L.); (B.H.); (Z.L.); (M.Y.)
- Key Laboratory of Animal Biotechnology of Xinjiang Institute of Animal Biotechnology, Xinjiang Academy of Animal Science, Urmuqi 830000, China
| | - Chenxi Liu
- Key Laboratory of Genetics, Breeding & Reproduction of Grass-Feeding Livestock, Ministry of Agriculture, Urmuqi 830000, China; (L.C.); (S.H.); (C.L.); (B.H.); (Z.L.); (M.Y.)
- Key Laboratory of Animal Biotechnology of Xinjiang Institute of Animal Biotechnology, Xinjiang Academy of Animal Science, Urmuqi 830000, China
| | - Bin Han
- Key Laboratory of Genetics, Breeding & Reproduction of Grass-Feeding Livestock, Ministry of Agriculture, Urmuqi 830000, China; (L.C.); (S.H.); (C.L.); (B.H.); (Z.L.); (M.Y.)
- Key Laboratory of Animal Biotechnology of Xinjiang Institute of Animal Biotechnology, Xinjiang Academy of Animal Science, Urmuqi 830000, China
| | - Zhilong Liu
- Key Laboratory of Genetics, Breeding & Reproduction of Grass-Feeding Livestock, Ministry of Agriculture, Urmuqi 830000, China; (L.C.); (S.H.); (C.L.); (B.H.); (Z.L.); (M.Y.)
- Key Laboratory of Animal Biotechnology of Xinjiang Institute of Animal Biotechnology, Xinjiang Academy of Animal Science, Urmuqi 830000, China
| | - Mayila Yusupu
- Key Laboratory of Genetics, Breeding & Reproduction of Grass-Feeding Livestock, Ministry of Agriculture, Urmuqi 830000, China; (L.C.); (S.H.); (C.L.); (B.H.); (Z.L.); (M.Y.)
- Key Laboratory of Animal Biotechnology of Xinjiang Institute of Animal Biotechnology, Xinjiang Academy of Animal Science, Urmuqi 830000, China
| | - Hugh Blair
- International Sheep Research Centre, School of Agriculture and Environment, Massey University, Palmerston North 4442, New Zealand; (H.B.); (P.K.); (S.M.)
| | - Paul Kenyon
- International Sheep Research Centre, School of Agriculture and Environment, Massey University, Palmerston North 4442, New Zealand; (H.B.); (P.K.); (S.M.)
| | - Stephen Morris
- International Sheep Research Centre, School of Agriculture and Environment, Massey University, Palmerston North 4442, New Zealand; (H.B.); (P.K.); (S.M.)
| | - Wenrong Li
- Key Laboratory of Genetics, Breeding & Reproduction of Grass-Feeding Livestock, Ministry of Agriculture, Urmuqi 830000, China; (L.C.); (S.H.); (C.L.); (B.H.); (Z.L.); (M.Y.)
- Key Laboratory of Animal Biotechnology of Xinjiang Institute of Animal Biotechnology, Xinjiang Academy of Animal Science, Urmuqi 830000, China
- Correspondence: (W.L.); (M.L.)
| | - Mingjun Liu
- Key Laboratory of Genetics, Breeding & Reproduction of Grass-Feeding Livestock, Ministry of Agriculture, Urmuqi 830000, China; (L.C.); (S.H.); (C.L.); (B.H.); (Z.L.); (M.Y.)
- Key Laboratory of Animal Biotechnology of Xinjiang Institute of Animal Biotechnology, Xinjiang Academy of Animal Science, Urmuqi 830000, China
- Correspondence: (W.L.); (M.L.)
| |
Collapse
|
3
|
Yao X, Yu T, Xi F, Xu Y, Ma L, Pan X, Chen S, Han M, Yin Y, Dai X, Xu G, Zhang H, Yang G, Xie L. BAMBI shuttling between cytosol and membrane is required for skeletal muscle development and regeneration. Biochem Biophys Res Commun 2018; 509:125-132. [PMID: 30580997 DOI: 10.1016/j.bbrc.2018.12.082] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 12/12/2018] [Indexed: 01/12/2023]
Abstract
Bone morphogenetic protein and activin membrane-bound inhibitor (BAMBI) gene encodes a transmembrane protein and is involved in multiple physiological and pathological processes, such as inflammatory response, tumor development and progression, cell proliferation and differentiation. A previous study suggested that BAMBI may interact with the Wnt/β-catenin signaling pathway via promoting β-catenin nuclear translocation associated with C2C12 myogenic myoblast differentiation. However, its biological function in skeletal muscle still remains unknown and requires further characterization. The present work sought to investigate its biological function in skeletal muscle, especially the physiological roles of BAMBI during skeletal muscle growth and regeneration. Our current work suggests that BAMBI protein is highly expressed in skeletal muscle and is only detected in cytosolic fraction in the resting muscle. Moreover, BAMBI protein is co-localized in fast-twitch (glycolytic) fibers, but not in slow-twitch (oxidative) fibers. Comparing with the cytosolic trapping in resting muscle, BAMBI protein is enriched on cellular membrane during the muscle growth and regeneration, suggesting that BAMBI-mediated a significant signaling pathway may be an essential part of muscle growth and regeneration.
Collapse
Affiliation(s)
- Xiangping Yao
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China; State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, 510070, China; Guangdong Bide Biotech CO. L.T.D., Guangzhou, Guangdong, China
| | - Taiyong Yu
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China
| | - Fengxue Xi
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China
| | - Yanting Xu
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China
| | - Lu Ma
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China
| | - Xiaohan Pan
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, 510070, China; Guangdong Bide Biotech CO. L.T.D., Guangzhou, Guangdong, China
| | - Shujie Chen
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, 510070, China; Guangdong Bide Biotech CO. L.T.D., Guangzhou, Guangdong, China
| | - Mulan Han
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, 510070, China; Guangdong Bide Biotech CO. L.T.D., Guangzhou, Guangdong, China
| | - Yulong Yin
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, 510070, China
| | - Xiaoshuang Dai
- BGI Institute of Applied Agriculture, BGI-Shenzhen, Shenzhen, 518120, China
| | - Guohuan Xu
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, 510070, China; Guangdong Bide Biotech CO. L.T.D., Guangzhou, Guangdong, China
| | - Huabing Zhang
- Department of Biochemistry & Molecular Biology, School of Basic Medicine, Anhui Medical University, Hefei, 230032, China.
| | - Gongshe Yang
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China.
| | - Liwei Xie
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, 510070, China; Guangdong Bide Biotech CO. L.T.D., Guangzhou, Guangdong, China.
| |
Collapse
|
4
|
Hernandez H, Millar JC, Curry SM, Clark AF, McDowell CM. BMP and Activin Membrane Bound Inhibitor Regulates the Extracellular Matrix in the Trabecular Meshwork. Invest Ophthalmol Vis Sci 2018; 59:2154-2166. [PMID: 29801150 PMCID: PMC5915111 DOI: 10.1167/iovs.17-23282] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 03/22/2018] [Indexed: 01/18/2023] Open
Abstract
Purpose The trabecular meshwork (TM) has an important role in the regulation of aqueous humor outflow and IOP. Regulation of the extracellular matrix (ECM) by TGFβ2 has been studied extensively. Bone morphogenetic protein (BMP) and activin membrane-bound inhibitor (BAMBI) has been shown to inhibit or modulate TGFβ2 signaling. We investigate the role of TGFβ2 and BAMBI in the regulation of TM ECM and ocular hypertension. Methods Mouse TM (MTM) cells were isolated from B6;129S1-Bambitm1Jian/J flox mice, characterized for TGFβ2 and dexamethasone (DEX)-induced expression of fibronectin, collagen-1, collagen-4, laminin, α-smooth muscle actin, cross-linked actin networks (CLANs) formation, and DEX-induced myocilin (MYOC) expression. MTM cells were transduced with Ad5.GFP to identify transduction efficiency. MTM cells and mouse eyes were transduced with Ad5.Null, Ad5.Cre, Ad5.TGFβ2, or Ad5.TGFβ2 + Ad5.Cre to evaluate the effect on ECM production, IOP, and outflow facility. Results MTM cells express TM markers and respond to DEX and TGFβ2. Ad5.GFP at 100 MOI had the highest transduction efficiency. Bambi knockdown by Ad5.Cre and Ad5.TGFβ2 increased fibronectin, collagen-1, and collagen-4 in TM cells in culture and tissue. Ad5.Cre, Ad5.TGFβ2, and Ad5.TGFβ2 + Ad5.Cre each significantly induced ocular hypertension and lowered aqueous humor outflow facility in transduced eyes. Conclusions We show for the first time to our knowledge that knockdown of Bambi alters ECM expression in cultured cells and mouse TM, reduces outflow facility, and causes ocular hypertension. These data provide a novel insight into the development of glaucomatous TM damage and identify BAMBI as an important regulator of TM ECM and ocular hypertension.
Collapse
Affiliation(s)
- Humberto Hernandez
- Department of Pharmacology and Neuroscience, North Texas Eye Research Institute, University of North Texas Health Science Center, Fort Worth, Texas, United States
| | - J. Cameron Millar
- Department of Pharmacology and Neuroscience, North Texas Eye Research Institute, University of North Texas Health Science Center, Fort Worth, Texas, United States
| | - Stacy M. Curry
- Department of Pharmacology and Neuroscience, North Texas Eye Research Institute, University of North Texas Health Science Center, Fort Worth, Texas, United States
| | - Abbot F. Clark
- Department of Pharmacology and Neuroscience, North Texas Eye Research Institute, University of North Texas Health Science Center, Fort Worth, Texas, United States
| | - Colleen M. McDowell
- Department of Pharmacology and Neuroscience, North Texas Eye Research Institute, University of North Texas Health Science Center, Fort Worth, Texas, United States
| |
Collapse
|
5
|
Bai L, Chu G, Wang W, Xiang A, Yang G. BAMBI promotes porcine granulosa cell steroidogenesis involving TGF-β signaling. Theriogenology 2017; 100:24-31. [DOI: 10.1016/j.theriogenology.2017.05.022] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2016] [Revised: 05/24/2017] [Accepted: 05/24/2017] [Indexed: 12/01/2022]
|
6
|
Bai L, Chu G, Mai Y, Zheng J, Wang W, Zhang Q, Yang G. Identification and expression analyses of BAMBI mediated by FSH in swine luteinizing granulosa cells. Theriogenology 2014; 82:1094-101. [PMID: 25168722 DOI: 10.1016/j.theriogenology.2014.07.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Revised: 07/14/2014] [Accepted: 07/14/2014] [Indexed: 11/27/2022]
Abstract
Transforming growth factor-β and related growth factors are essential regulators for the development of follicles. Bone morphogenic protein (BMP) and activin membrane-bound inhibitor (BAMBI) was reported as a key factor participating in the transforming growth factor-β signal pathway. To investigate the role of BAMBI in porcine granulosa cells, the full length of the BAMBI was cloned from porcine ovarian cDNA. The results of bioinformatics analyses showed that the signaling peptide was located in between positions 20 and 21. The results of online prediction on phosphorylation sites indicate that the sites of Ser, Thr, and Tyr are 9, 1, and 1, respectively. In addition, BAMBI was highly homologous in rodent and livestock. Real-time quantitative polymerase chain reaction (qPCR) indicated that BAMBI was widely expressed in porcine tissues. Immunofluorescence showed that BAMBI was located in both nucleus and cytoplasm. Stimulating the granulosa cells with FSH in vitro could alter BAMBI expression level in a time-dependent manner. Moreover, the expression level declined after treatment with FSH. These results indicated that BAMBI is an FSH-repressed gene in porcine luteinizing granulosa cells and it may be involved in the regulation of ovarian follicle development and oocyte maturation.
Collapse
Affiliation(s)
- Long Bai
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, PR China
| | - Guiyan Chu
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, PR China.
| | - Yin Mai
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, PR China
| | - Jiameng Zheng
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, PR China
| | - Wusu Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, PR China
| | - Qiangling Zhang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, PR China
| | - Gongshe Yang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, PR China
| |
Collapse
|
7
|
Mai Y, Zhang Z, Yang H, Dong P, Chu G, Yang G, Sun S. BMP and activin membrane-bound inhibitor (BAMBI) inhibits the adipogenesis of porcine preadipocytes through Wnt/β-catenin signaling pathway. Biochem Cell Biol 2014; 92:172-82. [PMID: 24798646 DOI: 10.1139/bcb-2014-0011] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
The process of differentiation from preadipocytes to adipocytes contributes to adipose tissue expansion in obesity. Blocking adipogenesis may be conducive to the etiology of obesity-related diseases. BMP and activin membrane-bound inhibitor (BAMBI) is a transmembrane protein, which was identified as a target of β-catenin in colorectal and hepatocellular tumor cells. However, whether BAMBI affects adipogenesis by Wnt/β-catenin signaling remains to be explored. In this study, we distinguish BAMBI as an inhibitor of preadipocytes differentiation. We found that BAMBI was downregulated during preadipocytes differentiation. Knockdown of BAMBI increased adipogenesis and blocked Wnt/β-catenin signaling by repressing β-catenin accumulation. In BAMBI overexpression cells, lipid accumulation was reduced by promoting nuclear translocation of β-catenin. Lithium chloride (LiCl) is an activator of Wnt/β-catenin signaling, which is an inhibitor of glycogen synthetase kinase-3 (GSK-3), maintaining the stability of β-catenin in cytosolic. We showed BAMBI strengthened the anti-adipogenic effects of LiCl. In addition, the results indicated that BAMBI was upregulated by β-catenin. These observations illuminated that BAMBI inhibits adipogenesis by a feedback loop (BAMBI→β-catenin nuclear translocation→BAMBI), which forms with Wnt/β-catenin signaling.
Collapse
Affiliation(s)
- Yin Mai
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, 22 Xinong Road, Yangling, Shaanxi 712100, China
| | | | | | | | | | | | | |
Collapse
|
8
|
Xavier S, Gilbert V, Rastaldi MP, Krick S, Kollins D, Reddy A, Bottinger E, Cohen CD, Schlondorff D. BAMBI is expressed in endothelial cells and is regulated by lysosomal/autolysosomal degradation. PLoS One 2010; 5:e12995. [PMID: 20886049 PMCID: PMC2945319 DOI: 10.1371/journal.pone.0012995] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2010] [Accepted: 08/31/2010] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND BAMBI (BMP and Activin Membrane Bound Inhibitor) is considered to influence TGFβ and Wnt signaling, and thereby fibrosis. Surprisingly data on cell type-specific expression of BAMBI are not available. We therefore examined the localization, gene regulation, and protein turnover of BAMBI in kidneys. METHODOLOGY/PRINCIPAL FINDINGS By immunofluorescence microscopy and by mRNA expression, BAMBI is restricted to endothelial cells of the glomerular and some peritubular capillaries and of arteries and veins in both murine and human kidneys. TGFβ upregulated mRNA of BAMBI in murine glomerular endothelial cells (mGEC). LPS did not downregulate mRNA for BAMBI in mGEC or in HUVECs. BAMBI mRNA had a half-life of only 60 minutes and was stabilized by cycloheximide, indicating post-transcriptional regulation due to AU-rich elements, which we identified in the 3' untranslated sequence of both the human and murine BAMBI gene. BAMBI protein turnover was studied in HUVECs with BAMBI overexpression using a lentiviral system. Serum starvation as an inducer of autophagy caused marked BAMBI degradation, which could be totally prevented by inhibition of lysosomal and autolysosomal degradation with bafilomycin, and partially by inhibition of autophagy with 3-methyladenine, but not by proteasomal inhibitors. Rapamycin activates autophagy by inhibiting TOR, and resulted in BAMBI protein degradation. Both serum starvation and rapamycin increased the conversion of the autophagy marker LC3 from LC3-I to LC3-II and also enhanced co-staining for BAMBI and LC3 in autolysosomal vesicles. CONCLUSIONS/SIGNIFICANCE 1. BAMBI localizes to endothelial cells in the kidney and to HUVECs. 2. BAMBI mRNA is regulated by post-transcriptional mechanisms. 3. BAMBI protein is regulated by lysosomal and autolysosomal degradation. The endothelial localization and the quick turnover of BAMBI may indicate novel, yet to be defined functions of this modulator for TGFβ and Wnt protein actions in the renal vascular endothelium in health and disease.
Collapse
Affiliation(s)
- Sandhya Xavier
- Department of Medicine, Mount Sinai School of Medicine, New York, New York, United States of America
| | - Victoria Gilbert
- Department of Medicine, Mount Sinai School of Medicine, New York, New York, United States of America
| | - Maria Pia Rastaldi
- Renal Immunopathology Laboratory, Fondazione D'Amico per la Ricerca sulle Malattie Renali, Milan, Italy
| | - Stefanie Krick
- Department of Medicine, Mount Sinai School of Medicine, New York, New York, United States of America
| | - Dmitrij Kollins
- Department of Medicine, Mount Sinai School of Medicine, New York, New York, United States of America
| | - Anand Reddy
- Department of Medicine, Mount Sinai School of Medicine, New York, New York, United States of America
| | - Erwin Bottinger
- Department of Medicine, Mount Sinai School of Medicine, New York, New York, United States of America
| | - Clemens D. Cohen
- Division of Nephrology and Institute of Physiology with Center of Integrative Human Physiology, University Hospital and University of Zurich, Zurich, Switzerland
| | - Detlef Schlondorff
- Department of Medicine, Mount Sinai School of Medicine, New York, New York, United States of America
- * E-mail:
| |
Collapse
|
9
|
Gonzales CB, Simmons D, MacDougall M. Competing roles of TGFbeta and Nma/BAMBI in odontoblasts. J Dent Res 2010; 89:597-602. [PMID: 20173182 DOI: 10.1177/0022034510363363] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Nma/BAMBI is a novel pseudoreceptor with homology to a TGFbeta type I receptor that lacks a serine/threonine kinase domain. Nma/BAMBI functions as a dominant-negative protein that regulates reciprocal epithelial-mesenchymal interactions during organogenesis. Therefore, we hypothesized that Nma/BAMBI regulates TGFbeta signaling and downstream gene expression during dentinogenesis. To test this hypothesis, we examined the downstream gene expression profiles of major dentin extracellular matrix proteins in response to Nma/BAMBI, and we examined the roles of Nma/BAMBI and TGFbeta-1 during dentinogenesis. Overexpression of Nma/BAMBI in the mouse odontoblast-like cell line MD10-A2 down-regulated expression of DSPP by 66% and up-regulated expression of DMP1 four-fold. TGFbeta treatment reversed Nma/BAMBI's negative effect on DSPP expression. Furthermore, we demonstrated that TGFbeta negatively regulates Nma/BAMBI's expression levels in MD10-A2 odontoblast-like cells. Analysis of these data, together, indicates that TGFbeta and Nma/BAMBI are inversely regulated and that the sequence of expression determines the net effect on downstream gene expression.
Collapse
Affiliation(s)
- C B Gonzales
- University of Texas Health Science Center at San Antonio Dental School, Department of Dental Diagnostic Science, 7703 Floyd Curl Drive, MCS 7888, San Antonio, TX 78229-3900, USA.
| | | | | |
Collapse
|
10
|
Higashihori N, Song Y, Richman JM. Expression and regulation of the decoy bone morphogenetic protein receptor BAMBI in the developing avian face. Dev Dyn 2008; 237:1500-8. [PMID: 18386821 DOI: 10.1002/dvdy.21529] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Here, we examine the expression and regulation of the gene BAMBI, a kinase-deficient decoy receptor capable of interacting with type I bone morphogenetic protein (BMP) receptors in avian embryos. Initially, expression was limited to the endoderm during neurula and pharyngula stages. From embryonic day 3.5 (stage 20) and onward, BAMBI expression almost perfectly overlapped with known expression patterns for BMP4, particularly in the face and limbs. We performed bead implant experiments in the face to see which signals could be repressing or promoting expression of BAMBI. Our data point to retinoids and BMPs as being major positive regulators of BAMBI expression; however, fibroblast growth factor 2 acts to repress BAMBI. Furthermore, retinoic acid is likely to act directly on BAMBI as induction occurs in the presence of cycloheximide. The data suggested that BAMBI could be used to regulate Bmp signaling during tissue interactions that are an integral part of facial morphogenesis.
Collapse
Affiliation(s)
- Norihisa Higashihori
- Department of Oral Health Sciences, Life Sciences Institute, The University of British Columbia, Vancouver BC, Canada
| | | | | |
Collapse
|
11
|
Kitazawa S, Kitazawa R, Obayashi C, Yamamoto T. Desmoid tumor with ossification in chest wall: possible involvement of BAMBI promoter hypermethylation in metaplastic bone formation. J Bone Miner Res 2005; 20:1472-7. [PMID: 16007344 DOI: 10.1359/jbmr.2005.20.8.1472] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2005] [Revised: 04/20/2005] [Accepted: 04/20/2005] [Indexed: 11/18/2022]
Abstract
UNLABELLED A rare case of desmoid-type fibromatosis with focal metaplastic bone in the chest wall suggested that enhanced responsiveness to BMP signaling by decreasing BAMBI expression through promoter hypermethylation plays a crucial role in the formation of metaplastic bone. INTRODUCTION Desmoid-type fibromatosis, originating from mesenchymal cells with myofibroblastic features, is a locally aggressive and frequently recurring infiltrative lesion. One such sporadic case with metaplastic ossification in the chest wall is presented. MATERIALS AND METHODS A 43-year-old man was referred to the hospital with a gradually enlarging hard mass in the left anterolateral chest wall. A thoracotomy was carried out, and histopathological specimens were used for immunohistochemical, genetic, and methylation studies. RESULTS Accumulation of altered beta-catenin associated with a somatic heterozygous activating mutation in codon 41 was detected in the typical desmoid-type fibromatosis and at the ossifying focus. Among factors related to bone formation and the classical wnt-beta-catenin signaling pathway, BMP and activin membrane-bound inhibitor (BAMBI) expression was specifically downregulated at the ossifying focus. Hypermethylation of the BAMBI promoter was observed in microdissected tissue from the ossifying focus but not in that from the typical desmoid-type fibromatosis. CONCLUSIONS Because both BMP and classical Wnt/beta-catenin/LEF1 signaling cooperatively and mutually induce differentiation of mesenchymal cells into osteoblastic cells and promote bone formation, the epigenetic event leading to the enhanced responsiveness to BMP signaling may play a crucial role in the formation of metaplastic bone.
Collapse
Affiliation(s)
- Sohei Kitazawa
- Division of Molecular Pathology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Japan.
| | | | | | | |
Collapse
|
12
|
Knight C, Papagerakis P, Simmons D, Berdal A, MacDougall M. Genomic organization and localization of mouse Nma/BAMBI: possible implications related to ameloblastoma formation. Connect Tissue Res 2003; 43:359-64. [PMID: 12489181 DOI: 10.1080/03008200290000600] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Our laboratory has determined the DNA sequence and transcriptional expression pattern of a mouse cDNA clone termed Nma/BAMBI. This clone encodes a highly conserved protein with 89% identity to the human homologue (termed Nma) and 78% similarity to the Xenopus homologue (termed BAMBI) at the predicted amino acid level. Nma/BAMBI encodes a 260-amino-acid transmembrane protein that has homology to the transforming growth factor (TGF) beta type I receptor family. This protein contains an extracellular ligand binding domain, a 24-amino-acid transmembrane domain, and a short intracellular domain that lacks a functional serine/threonine kinase domain. It is believed that Nma/BAMBI is important in the negative regulation of TGF beta signal transduction pathways during development and has implications in tumor progression. We have determined the genomic organization of the mouse Nma/BAMBI gene and confirmed the chromosomal mapping to human chromosome 10 and mouse chromosome 2. Furthermore, we report the production and utilization of an anti-peptide antibody in preliminary immunohistochemical analysis of an ameloblastoma.
Collapse
Affiliation(s)
- C Knight
- University of Texas Health Science Center at San Antonio, Dental School, Department of Pediatric Dentistry, 7703 Floyd Curl Drive, MCS 7888, San Antonio, Texas 78229-3900, USA
| | | | | | | | | |
Collapse
|