1
|
Wang Z, Zhao M, Su Y, Zhao Q, Ma Z, Yue Q, Zhu Z, Zhang L, Hou Z, Li H. The impact of NUMB on chicken abdominal adipogenesis: A comprehensive analysis. Int J Biol Macromol 2024:134904. [PMID: 39168214 DOI: 10.1016/j.ijbiomac.2024.134904] [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: 05/11/2024] [Revised: 08/09/2024] [Accepted: 08/18/2024] [Indexed: 08/23/2024]
Abstract
Excessive abdominal fat deposition negatively impacts poultry meat production and carcass yield. Identification of novel adipogenesis regulators may help improve production performance declines caused by excessive fat deposition. NUMB Endocytic Adaptor Protein (NUMB) typically functions as a cell fate determinant and plays a significant role in cell development and various diseases. Here, we found that NUMB is abundantly expressed in chicken abdominal fat depots and is induced in cultured adipocytes following adipogenic treatment. The gain- and loss-of-function experiments demonstrated that NUMB promotes the proliferation and G1/S transition of chicken adipocytes, enhances adipocyte differentiation, and increases the expression of PPARγ1 transcript. Through mRNA-seq analysis and molecular experiments, we further confirmed that NUMB inhibits the transcriptional activation of the NOTCH1 pathway and the expression of the downstream transcription factor HES1 by inducing NOTCH1 degradation. Nevertheless, the inhibition of the NOTCH1/HES1 axis alone cannot fully explain NUMB's role in adipogenesis, as NUMB also regulates the expression of multiple adipogenic transcription factors such as E2F1, EGR2, and NR4A3. Our data suggest that NUMB is a potent activator of adipogenesis and enhances our understanding of its regulatory mechanisms in chicken abdominal fat deposition.
Collapse
Affiliation(s)
- Zheng Wang
- College of Life Science, Shanxi Agricultural University, Shanxi 030801, China
| | - Mingyu Zhao
- College of Life Science, Shanxi Agricultural University, Shanxi 030801, China
| | - Yue Su
- College of Life Science, Shanxi Agricultural University, Shanxi 030801, China
| | - Qiangsen Zhao
- National Engineering Laboratory for Animal Breeding and MARA Key Laboratory of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Zhenhua Ma
- College of Life Science, Shanxi Agricultural University, Shanxi 030801, China
| | - Qiaoxian Yue
- College of Life Science, Shanxi Agricultural University, Shanxi 030801, China
| | - Zhiwei Zhu
- College of Life Science, Shanxi Agricultural University, Shanxi 030801, China
| | - Lihuan Zhang
- College of Life Science, Shanxi Agricultural University, Shanxi 030801, China
| | - Zhuocheng Hou
- National Engineering Laboratory for Animal Breeding and MARA Key Laboratory of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Huifeng Li
- College of Life Science, Shanxi Agricultural University, Shanxi 030801, China.
| |
Collapse
|
2
|
Zhang J, Yang G, Liu J, Lin Z, Zhang J, Zhao J, Sun G, Lin H. Glucagon-like peptide-1 analog liraglutide reduces fat deposition in chicken adipocytes. Poult Sci 2024; 103:103766. [PMID: 38759567 PMCID: PMC11107459 DOI: 10.1016/j.psj.2024.103766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 04/07/2024] [Accepted: 04/09/2024] [Indexed: 05/19/2024] Open
Abstract
Previously, we reported that glucagon-like peptide-1 (GLP-1) and its analog liraglutide could inhibit fat de novo synthesis in the liver and reduce abdominal fat accumulation in broiler chickens. Nevertheless, the impact of GLP-1 on adipocyte fat deposition remains enigmatic. This study aimed to investigate the effects of GLP-1, via its analog liraglutide, on chicken chicken adipocytes in vitro. Chemical assays, quantitative real-time polymerase chain reaction (qRT-PCR), and western blot were employed to assess the proliferation, differentiation, and fat deposition of chicken adipocytes. Our findings indicated that liraglutide significantly suppressed cell proliferation and promoted preadipocyte differentiation in comparison to the control group. This was evidenced by elevated triglyceride (TG) content and upregulated mRNA expression of lipogenesis-related enzymes, such as acetyl-CoA carboxylase (ACC) and fatty acid synthase (FAS), as well as regulators including peroxisome proliferator-activated receptor γ (PPARγ), sterol regulatory element binding protein-1 (SREBP1) and CCAAT/enhancer binding protein α (CEBPα). In mature adipocytes, liraglutide attenuated fat deposition by inhibiting fat de novo synthesis, evidenced by decreased mRNA expression of ACC, FAS, PPARγ, C/EBPα, and SREBP1, and concurrent upregulation of phosphorylated AMP-activated protein kinase (p-AMPK) and phosphorylated ACC (p-ACC). This resulted in reduced accumulation of lipid droplets and TG content in mature adipocytes. Collectively, our findings indicate that liraglutide suppresses the proliferation of preadipocytes, enhances their differentiation, and concurrently inhibits de novo lipogenesis in mature adipocytes. This observation offers profound insights into the mechanisms that underlie liraglutide's anti-adipogenic effects, which could have significant implications for the treatment of obesity in broiler chickens.
Collapse
Affiliation(s)
- Jianmei Zhang
- Laboratory of Animal Genetics, Breeding and Reproduction, College of Life Sciences and Enology, Tai'shan University, Tai'an, 271018, Shandong, China
| | - Guangcheng Yang
- Laboratory of Animal Genetics, Breeding and Reproduction, College of Life Sciences and Enology, Tai'shan University, Tai'an, 271018, Shandong, China
| | - Jingbo Liu
- Laboratory of Animal Genetics, Breeding and Reproduction, College of Life Sciences and Enology, Tai'shan University, Tai'an, 271018, Shandong, China
| | - Zhenxian Lin
- Laboratory of Animal Genetics, Breeding and Reproduction, College of Life Sciences and Enology, Tai'shan University, Tai'an, 271018, Shandong, China
| | - Jie Zhang
- Laboratory of Animal Genetics, Breeding and Reproduction, College of Life Sciences and Enology, Tai'shan University, Tai'an, 271018, Shandong, China
| | - Jin Zhao
- Laboratory of Animal Genetics, Breeding and Reproduction, College of Life Sciences and Enology, Tai'shan University, Tai'an, 271018, Shandong, China
| | - Guozheng Sun
- Laboratory of Animal Genetics, Breeding and Reproduction, College of Life Sciences and Enology, Tai'shan University, Tai'an, 271018, Shandong, China
| | - Hai Lin
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Shandong Key Lab for Animal Biotechnology and Disease Control, Tai'an, China.
| |
Collapse
|
3
|
Jia Z, Jin Z, Li M, Zhang X, Peng M, Zhang S, Tan M, Yang Q, Wang W, Sun Y. E2F transcription factor 5, a new regulator in adipogenesis to mediate the role of Krüppel-like factor 7 in chicken preadipocyte differentiation and proliferation. Poult Sci 2024; 103:103728. [PMID: 38688194 PMCID: PMC11077033 DOI: 10.1016/j.psj.2024.103728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 03/22/2024] [Accepted: 03/31/2024] [Indexed: 05/02/2024] Open
Abstract
E2F transcription factor 5 (E2F5) gene is a transcription factor, plays an important role in the development of a variety of cells. E2F5 is expressed in human and mouse adipocytes, but its specific function in adipogenesis is unclear. Krüppel-like factor 7 (KLF7) facilitates proliferation and inhibits differentiation in chicken preadipocytes. Our previous KLF7 chromatin immunoprecipitation-sequencing analysis revealed a KLF7-binding peak in the 3' flanking region of the E2F5, indicating a regulatory role of KLF7 in this region. In the present study, we investigated E2F5 potential role, the overexpression and knockdown analyses revealed that E2F5 inhibited the differentiation and promoted the proliferation of chicken preadipocytes. Moreover, we identified enhancer activity in the 3' flanking region (nucleotides +22661/+22900) of E2F5 and found that KLF7 overexpression increased E2F5 expression and luciferase activity in this region. Deleting the putative KLF7-binding site eliminated the promoting effect of KLF7 overexpression on E2F5 expression. Further, E2F5 reversed the KLF7-induced decrease in preadipocyte differentiation and increase in preadipocyte proliferation. Taken together, our findings demonstrate that KLF7 inhibits differentiation and promotes proliferation in preadipocytes by enhancing E2F5 transcription.
Collapse
Affiliation(s)
- Ziqiu Jia
- College of Life Science and Agriculture Forestry, Qiqihar University, Heilongjiang Provincial Key Laboratory of Resistance Gene Engineering and Protection of Biodiversity in Cold Areas, Qiqihar, Heilongjiang 161000, China
| | - Zhao Jin
- College of Life Science and Agriculture Forestry, Qiqihar University, Heilongjiang Provincial Key Laboratory of Resistance Gene Engineering and Protection of Biodiversity in Cold Areas, Qiqihar, Heilongjiang 161000, China
| | - Meiqi Li
- College of Life Science and Agriculture Forestry, Qiqihar University, Heilongjiang Provincial Key Laboratory of Resistance Gene Engineering and Protection of Biodiversity in Cold Areas, Qiqihar, Heilongjiang 161000, China
| | - Xin Zhang
- College of Life Science and Agriculture Forestry, Qiqihar University, Heilongjiang Provincial Key Laboratory of Resistance Gene Engineering and Protection of Biodiversity in Cold Areas, Qiqihar, Heilongjiang 161000, China
| | - Min Peng
- College of Life Science and Agriculture Forestry, Qiqihar University, Heilongjiang Provincial Key Laboratory of Resistance Gene Engineering and Protection of Biodiversity in Cold Areas, Qiqihar, Heilongjiang 161000, China
| | - Shanshan Zhang
- College of Life Science and Agriculture Forestry, Qiqihar University, Heilongjiang Provincial Key Laboratory of Resistance Gene Engineering and Protection of Biodiversity in Cold Areas, Qiqihar, Heilongjiang 161000, China
| | - Ming Tan
- College of Life Science and Agriculture Forestry, Qiqihar University, Heilongjiang Provincial Key Laboratory of Resistance Gene Engineering and Protection of Biodiversity in Cold Areas, Qiqihar, Heilongjiang 161000, China
| | - Qingzhu Yang
- College of Life Science and Agriculture Forestry, Qiqihar University, Heilongjiang Provincial Key Laboratory of Resistance Gene Engineering and Protection of Biodiversity in Cold Areas, Qiqihar, Heilongjiang 161000, China
| | - Weiyu Wang
- College of Life Science and Agriculture Forestry, Qiqihar University, Heilongjiang Provincial Key Laboratory of Resistance Gene Engineering and Protection of Biodiversity in Cold Areas, Qiqihar, Heilongjiang 161000, China
| | - Yingning Sun
- College of Life Science and Agriculture Forestry, Qiqihar University, Heilongjiang Provincial Key Laboratory of Resistance Gene Engineering and Protection of Biodiversity in Cold Areas, Qiqihar, Heilongjiang 161000, China.
| |
Collapse
|
4
|
Wang Z, Su Y, Zhao M, Ma Z, Li J, Hou Z, Li H. NOTCH1 as a Negative Regulator of Avian Adipocyte Differentiation: Implications for Fat Deposition. Animals (Basel) 2024; 14:585. [PMID: 38396553 PMCID: PMC10886207 DOI: 10.3390/ani14040585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 02/02/2024] [Accepted: 02/07/2024] [Indexed: 02/25/2024] Open
Abstract
The NOTCH signaling pathway plays a pivotal role in diverse developmental processes, including cell proliferation and differentiation. In this study, we investigated whether this signaling molecules also contribute to avian adipogenesis. Using previous mRNA-seq datasets, we examined the expression of 11 signaling members during avian adipocyte differentiation. We found most members are down-regulated throughout differentiation (p < 0.05). As a representative, NOTCH1 was decreased in cultured chicken abdominal adipocytes during adipogenesis at mRNA and protein levels (p < 0.05). Moreover, using an overexpression plasmid for NOTCH1's intracellular domain (NICD1), as well as siRNA and DAPT to activate or deplete NOTCH1 in cells, we investigated the role of NOTCH1 in avian adipogenesis. Our findings illuminate that NOTCH1 activates the expression of HES1 and SOCS3 while it decreases NR2F2 and NUMB (p < 0.05), as well as inhibits oleic acid-induced adipocyte differentiation (p < 0.01). We further demonstrate that HES1, a downstream transcription factor activated by NOTCH1, also significantly inhibits adipogenesis by suppressing PPARγ and C/EBPα (p < 0.01). Collectively, these findings establish NOTCH1 as a negative regulator of avian adipocyte differentiation, unveiling NOTCH signaling as a potential target for regulating avian fat deposition.
Collapse
Affiliation(s)
- Zheng Wang
- College of Life Sciences, Shanxi Agricultural University, Jinzhong 030801, China; (Z.W.); (Y.S.); (M.Z.); (Z.M.)
| | - Yue Su
- College of Life Sciences, Shanxi Agricultural University, Jinzhong 030801, China; (Z.W.); (Y.S.); (M.Z.); (Z.M.)
| | - Mingyu Zhao
- College of Life Sciences, Shanxi Agricultural University, Jinzhong 030801, China; (Z.W.); (Y.S.); (M.Z.); (Z.M.)
| | - Zhenhua Ma
- College of Life Sciences, Shanxi Agricultural University, Jinzhong 030801, China; (Z.W.); (Y.S.); (M.Z.); (Z.M.)
| | - Jianhui Li
- College of Animal Science, Shanxi Agricultural University, Jinzhong 030801, China;
| | - Zhuocheng Hou
- National Engineering Laboratory for Animal Breeding and MARA Key Laboratory of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China;
| | - Huifeng Li
- College of Life Sciences, Shanxi Agricultural University, Jinzhong 030801, China; (Z.W.); (Y.S.); (M.Z.); (Z.M.)
| |
Collapse
|
5
|
Chen H, Zhou S, Wang Y, Zhang Q, Leng L, Cao Z, Luan P, Li Y, Wang S, Li H, Cheng B. HBP1 promotes chicken preadipocyte proliferation via directly repressing SOCS3 transcription. Int J Biol Macromol 2024; 256:128414. [PMID: 38029903 DOI: 10.1016/j.ijbiomac.2023.128414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 11/13/2023] [Accepted: 11/22/2023] [Indexed: 12/01/2023]
Abstract
Preadipocyte proliferation is an essential process in adipose development. During proliferation of preadipocytes, transcription factors play crucial roles. HMG-box protein 1 (HBP1) is an important transcription factor of cellular proliferation. However, the function and underlying mechanisms of HBP1 in the proliferation of preadipocytes remain unclear. Here, we found that the expression level of HBP1 decreased first and then increased during the proliferation of chicken preadipocytes. Knockout of HBP1 could inhibit the proliferation of preadipocytes, while overexpression of HBP1 could promote the proliferation of preadipocytes. ChIP-seq data showed that HBP1 had the unique DNA binding motif in chicken preadipocytes. By integrating ChIP-Seq and RNA-Seq, we revealed a total of 3 candidate target genes of HBP1. Furthermore, the results of ChIP-qPCR, RT-qPCR, luciferase reporter assay and EMSA showed that HBP1 could inhibit the transcription of suppressor of cytokine signaling 3 (SOCS3) by binding to its promoter. Moreover, we confirmed that SOCS3 can mediate the regulation of HBP1 on the proliferation of preadipocytes through RNAi and rescue experiments. Altogether, these data demonstrated that HBP1 directly targets SOCS3 to regulate chicken preadipocyte proliferation. Our findings expand the transcriptional regulatory network of preadipocyte proliferation, and they will be helpful in formulating a molecular breeding scheme to control excessive abdominal fat deposition and to improve meat quality in chickens.
Collapse
Affiliation(s)
- Hongyan Chen
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, Heilongjiang, China; Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, Heilongjiang, China; College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, Heilongjiang, China; College of Life Science and Agriculture Forestry, Qiqihar University, Qiqihar 161006, Heilongjiang, China
| | - Sitong Zhou
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, Heilongjiang, China; Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, Heilongjiang, China; College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, Heilongjiang, China
| | - Youdong Wang
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, Heilongjiang, China; Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, Heilongjiang, China; College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, Heilongjiang, China
| | - Qi Zhang
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, Heilongjiang, China; Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, Heilongjiang, China; College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, Heilongjiang, China
| | - Li Leng
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, Heilongjiang, China; Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, Heilongjiang, China; College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, Heilongjiang, China
| | - Zhiping Cao
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, Heilongjiang, China; Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, Heilongjiang, China; College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, Heilongjiang, China
| | - Peng Luan
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, Heilongjiang, China; Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, Heilongjiang, China; College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, Heilongjiang, China
| | - Yumao Li
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, Heilongjiang, China; Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, Heilongjiang, China; College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, Heilongjiang, China
| | - Shouzhi Wang
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, Heilongjiang, China; Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, Heilongjiang, China; College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, Heilongjiang, China
| | - Hui Li
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, Heilongjiang, China; Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, Heilongjiang, China; College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, Heilongjiang, China.
| | - Bohan Cheng
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, Heilongjiang, China; Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, Heilongjiang, China; College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, Heilongjiang, China.
| |
Collapse
|
6
|
Kim G, Lee J, Ha J, Kang I, Choe W. Endoplasmic Reticulum Stress and Its Impact on Adipogenesis: Molecular Mechanisms Implicated. Nutrients 2023; 15:5082. [PMID: 38140341 PMCID: PMC10745682 DOI: 10.3390/nu15245082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 11/30/2023] [Accepted: 12/09/2023] [Indexed: 12/24/2023] Open
Abstract
Endoplasmic reticulum (ER) stress plays a pivotal role in adipogenesis, which encompasses the differentiation of adipocytes and lipid accumulation. Sustained ER stress has the potential to disrupt the signaling of the unfolded protein response (UPR), thereby influencing adipogenesis. This comprehensive review illuminates the molecular mechanisms that underpin the interplay between ER stress and adipogenesis. We delve into the dysregulation of UPR pathways, namely, IRE1-XBP1, PERK and ATF6 in relation to adipocyte differentiation, lipid metabolism, and tissue inflammation. Moreover, we scrutinize how ER stress impacts key adipogenic transcription factors such as proliferator-activated receptor γ (PPARγ) and CCAAT-enhancer-binding proteins (C/EBPs) along with their interaction with other signaling pathways. The cellular ramifications include alterations in lipid metabolism, dysregulation of adipokines, and aged adipose tissue inflammation. We also discuss the potential roles the molecular chaperones cyclophilin A and cyclophilin B play in adipogenesis. By shedding light on the intricate relationship between ER stress and adipogenesis, this review paves the way for devising innovative therapeutic interventions.
Collapse
Affiliation(s)
- Gyuhui Kim
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; (G.K.); (J.H.); (I.K.)
- Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jiyoon Lee
- Department of Biological Sciences, Franklin College of Arts and Sciences, University of Georgia, Athens, GA 30609, USA;
| | - Joohun Ha
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; (G.K.); (J.H.); (I.K.)
- Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Insug Kang
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; (G.K.); (J.H.); (I.K.)
- Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Wonchae Choe
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; (G.K.); (J.H.); (I.K.)
- Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| |
Collapse
|
7
|
Boubertakh B, Courtemanche O, Marsolais D, Di Marzo V, Silvestri C. New role for the anandamide metabolite prostaglandin F 2α ethanolamide: Rolling preadipocyte proliferation. J Lipid Res 2023; 64:100444. [PMID: 37730163 PMCID: PMC10622703 DOI: 10.1016/j.jlr.2023.100444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 08/24/2023] [Accepted: 09/11/2023] [Indexed: 09/22/2023] Open
Abstract
White adipose tissue regulation is key to metabolic health, yet still perplexing. The chief endocannabinoid anandamide metabolite, prostaglandin F2α ethanolamide (PGF2αEA), inhibits adipogenesis, that is, the formation of mature adipocytes. We observed that adipocyte progenitor cells-preadipocytes-following treatment with PGF2αEA yielded larger pellet sizes. Thus, we hypothesized that PGF2αEA might augment preadipocyte proliferation. Cell viability MTT and crystal violet assays, cell counting, and 5-bromo-2'-deoxyuridine incorporation in cell proliferation ELISA analyses confirmed our prediction. Additionally, we discovered that PGF2αEA promotes cell cycle progression through suppression of the expression of cell cycle inhibitors, p21 and p27, as shown by flow cytometry and qPCR. Enticingly, concentrations of this compound that showed no visible effect on cell proliferation or basal transcriptional activity of peroxisome proliferator-activated receptor gamma could, in contrast, reverse the anti-proliferative and peroxisome proliferator-activated receptor gamma-transcription activating effects of rosiglitazone (Rosi). MTT and luciferase reporter examinations supported this finding. The PGF2αEA pharmaceutical analog, bimatoprost, was also investigated and showed very similar effects. Importantly, we suggest the implication of the mitogen-activated protein kinase pathway in these effects, as they were blocked by the selective mitogen-activated protein kinase kinase inhibitor, PD98059. We propose that PGF2αEA is a pivotal regulator of white adipose tissue plasticity, acting as a regulator of the preadipocyte pool in adipose tissue.
Collapse
Affiliation(s)
- Besma Boubertakh
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec (CRIUCPQ), Département de médecine, Faculté de Médecine, Université Laval, Québec, Canada; Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Centre NUTRISS, Université Laval, Québec, Canada; Canada Excellence Research Chair on the Microbiome-Endocannabinoidome Axis in Metabolic Health (CERC-MEND), Université Laval, Québec, Canada
| | - Olivier Courtemanche
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec (CRIUCPQ), Département de médecine, Faculté de Médecine, Université Laval, Québec, Canada
| | - David Marsolais
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec (CRIUCPQ), Département de médecine, Faculté de Médecine, Université Laval, Québec, Canada
| | - Vincenzo Di Marzo
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec (CRIUCPQ), Département de médecine, Faculté de Médecine, Université Laval, Québec, Canada; Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Centre NUTRISS, Université Laval, Québec, Canada; Canada Excellence Research Chair on the Microbiome-Endocannabinoidome Axis in Metabolic Health (CERC-MEND), Université Laval, Québec, Canada; École de Nutrition, Faculté des Sciences de l'Agriculture et de l'Alimentation (FSAA), Université Laval, Québec, Canada
| | - Cristoforo Silvestri
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec (CRIUCPQ), Département de médecine, Faculté de Médecine, Université Laval, Québec, Canada; Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Centre NUTRISS, Université Laval, Québec, Canada; Canada Excellence Research Chair on the Microbiome-Endocannabinoidome Axis in Metabolic Health (CERC-MEND), Université Laval, Québec, Canada.
| |
Collapse
|
8
|
Simvastatin Improves Benign Prostatic Hyperplasia: Role of Peroxisome-Proliferator-Activated Receptor-γ and Classic WNT/β-Catenin Pathway. Int J Mol Sci 2023; 24:ijms24054911. [PMID: 36902342 PMCID: PMC10003121 DOI: 10.3390/ijms24054911] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 02/26/2023] [Accepted: 02/27/2023] [Indexed: 03/08/2023] Open
Abstract
Benign prostatic hyperplasia (BPH) is a common disease in elderly men with an uncertain etiology and mechanistic basis. Metabolic syndrome (MetS) is also a very common illness and is closely related to BPH. Simvastatin (SV) is one of the widely used statins for MetS. Peroxisome-proliferator-activated receptor gamma (PPARγ), crosstalking with the WNT/β-catenin pathway, plays important roles in MetS. Our current study aimed to examine SV-PPARγ-WNT/β-catenin signaling in the development of BPH. Human prostate tissues and cell lines plus a BPH rat model were utilized. Immunohistochemical, immunofluorescence, hematoxylin and eosin (H&E) and Masson's trichrome staining, construction of a tissue microarray (TMA), ELISA, CCK-8 assay, qRT-PCR, flow cytometry, and Western blotting were also performed. PPARγ was expressed in both prostate stroma and epithelial compartments and downregulated in BPH tissues. Furthermore, SV dose-dependently triggered cell apoptosis and cell cycle arrest at the G0/G1 phase and attenuated tissue fibrosis and the epithelial-mesenchymal transition (EMT) process both in vitro and in vivo. SV also upregulated the PPARγ pathway, whose antagonist could reverse SV produced in the aforementioned biological process. Additionally, crosstalk between PPARγ and WNT/β-catenin signaling was demonstrated. Finally, correlation analysis with our TMA containing 104 BPH specimens showed that PPARγ was negatively related with prostate volume (PV) and free prostate-specific antigen (fPSA) and positively correlated with maximum urinary flow rate (Qmax). WNT-1 and β-catenin were positively related with International Prostate Symptom Score (IPSS) and nocturia, respectively. Our novel data demonstrate that SV could modulate cell proliferation, apoptosis, tissue fibrosis, and the EMT process in the prostate through crosstalk between PPARγ and WNT/β-catenin pathways.
Collapse
|
9
|
Sun Y, Xu H, Li J, Peng M, Jia Z, Kong L, Zhang X, Shao S, Zhang W, Wang W. Genome-wide survey identifies TNNI2 as a target of KLF7 that inhibits chicken adipogenesis via downregulating FABP4. BIOCHIMICA ET BIOPHYSICA ACTA. GENE REGULATORY MECHANISMS 2023; 1866:194899. [PMID: 36410687 DOI: 10.1016/j.bbagrm.2022.194899] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 10/26/2022] [Accepted: 11/12/2022] [Indexed: 11/19/2022]
Abstract
Krüppel-like factor 7 (KLF7) negatively regulates adipocyte differentiation; however, the mechanism underlying its activity in mammals and birds remains poorly understood. To identify genome-wide KLF7-binding motifs in preadipocytes, we conducted a chromatin immunoprecipitation-sequencing analysis of immortalized chicken preadipocytes (ICP2), which revealed 11,063 specific binding sites. Intergenic binding site analysis showed that KLF7 regulates several novel factors whose functions in chicken and mammal adipogenesis are underexplored. We identified a novel regulator, troponin I2 (TNNI2), which is positively regulated by KLF7. TNNI2 is downregulated during preadipocyte differentiation and acts as an adipogenic repressor at least in part by repressing FABP4 promoter activity. In conclusion, we demonstrated that KLF7 functions through cis-regulation of TNNI2, which inhibits adipogenesis. Our findings not only provide the first genome-wide picture of KLF7 associations in preadipocytes but also identify a novel function of TNNI2.
Collapse
Affiliation(s)
- Yingning Sun
- College of Life Science and Agriculture Forestry, Qiqihar University, Heilongjiang Provincial Key Laboratory of Resistance Gene Engineering and Protection of Biodiversity in Cold Areas, Qiqihar, Heilongjiang 161000, China.
| | - Hu Xu
- College of Life Science and Agriculture Forestry, Qiqihar University, Heilongjiang Provincial Key Laboratory of Resistance Gene Engineering and Protection of Biodiversity in Cold Areas, Qiqihar, Heilongjiang 161000, China
| | - Jinwei Li
- College of Life Science and Agriculture Forestry, Qiqihar University, Heilongjiang Provincial Key Laboratory of Resistance Gene Engineering and Protection of Biodiversity in Cold Areas, Qiqihar, Heilongjiang 161000, China
| | - Min Peng
- College of Life Science and Agriculture Forestry, Qiqihar University, Heilongjiang Provincial Key Laboratory of Resistance Gene Engineering and Protection of Biodiversity in Cold Areas, Qiqihar, Heilongjiang 161000, China
| | - Ziqiu Jia
- College of Life Science and Agriculture Forestry, Qiqihar University, Heilongjiang Provincial Key Laboratory of Resistance Gene Engineering and Protection of Biodiversity in Cold Areas, Qiqihar, Heilongjiang 161000, China
| | - Lingzhe Kong
- College of Life Science and Agriculture Forestry, Qiqihar University, Heilongjiang Provincial Key Laboratory of Resistance Gene Engineering and Protection of Biodiversity in Cold Areas, Qiqihar, Heilongjiang 161000, China
| | - Xin Zhang
- College of Life Science and Agriculture Forestry, Qiqihar University, Heilongjiang Provincial Key Laboratory of Resistance Gene Engineering and Protection of Biodiversity in Cold Areas, Qiqihar, Heilongjiang 161000, China
| | - Shuli Shao
- College of Life Science and Agriculture Forestry, Qiqihar University, Heilongjiang Provincial Key Laboratory of Resistance Gene Engineering and Protection of Biodiversity in Cold Areas, Qiqihar, Heilongjiang 161000, China
| | - Weiwei Zhang
- College of Life Science and Agriculture Forestry, Qiqihar University, Heilongjiang Provincial Key Laboratory of Resistance Gene Engineering and Protection of Biodiversity in Cold Areas, Qiqihar, Heilongjiang 161000, China
| | - Weiyu Wang
- College of Life Science and Agriculture Forestry, Qiqihar University, Heilongjiang Provincial Key Laboratory of Resistance Gene Engineering and Protection of Biodiversity in Cold Areas, Qiqihar, Heilongjiang 161000, China
| |
Collapse
|
10
|
Tan M, Xu H, Li J, Jia Z, Zhang X, Shao S, Zhang W, Wang W, Sun Y. PU.1 interacts with KLF7 to suppress differentiation and promote proliferation in chicken preadipocytes. Acta Biochim Biophys Sin (Shanghai) 2023; 55:143-153. [PMID: 36647727 PMCID: PMC10157628 DOI: 10.3724/abbs.2022202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
<p indent="0mm">Krüppel-like factor 7 (KLF7) is a negative regulator of preadipocyte differentiation. Our previous KLF7 ChIP-seq analysis showed that the binding motif of PU.1 was found among the KLF7 binding peaks, indicating that an interaction between KLF7 and PU.1 at preadipocyte gene promoters and other regulatory elements might be common. Here, Co-IP and FRET assays are used to confirm that PU.1 can directly bind to KLF7 and enhance the transcription activity of cyclin-dependent kinase inhibitor 3 ( <italic>CDKN3</italic>), which is a downstream target gene of KLF7. We show that the PU.1 expression level is decreased during preadipocyte differentiation. Furthermore, PU.1 overexpression and knockdown experiments reveal that PU.1 negatively regulates chicken preadipocyte differentiation, as evidenced by appropriate changes in lipid droplet accumulation and altered expressions of PPARγ, FAS, and PLIN. In addition, PU.1 overexpression promotes preadipocyte proliferation, while knockdown of <italic>PU</italic>. <italic>1</italic> inhibits preadipocyte proliferation. We further demonstrate that PU.1 inhibits differentiation and promotes proliferation in preadipocytes, in part by directly interacting with KLF7. </p>.
Collapse
|
11
|
Jing Y, Mu F, Xing X, Huang J, Lou M, Xu H, Ning B, Lou Y, Gao Z, Luo H, Yan X, Li H, Wang N. Knockout and Restoration Reveal Differential Functional Roles of PPARγ1 and PPARγ2 in Chicken Adipogenesis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:14959-14973. [PMID: 36383077 DOI: 10.1021/acs.jafc.2c05549] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Peroxisome proliferator-activated receptor γ (PPARγ) is the master regulator of adipogenesis and is expressed as two isoforms, PPARγ1 and PPARγ2. Our previous lentiviral overexpression study showed that PPARγ1 and PPARγ2 differentially regulated proliferation, differentiation, and apoptosis of the immortalized chicken preadipocyte cell line (ICP2). However, we cannot rule out the possibility that the endogenous expression of PPARγ isoforms may compromise our findings. In this study, using the dual sgRNA-directed CRISPR/Cas9 system, we generated PPARγ (PPARγ-/-) and PPARγ2-specific knockout (PPARγ2-/-) ICP2 cell lines and investigated the differences in proliferation and differentiation among PPARγ-/-, PPARγ2-/-, and wild-type ICP2 cells. EdU proliferation assay showed that both PPARγ2-specific and PPARγ knockouts significantly increased the proliferation rates. Consistently, real-time RT-PCR analysis showed that both PPARγ2-specific and PPARγ knockouts significantly upregulated the expression of proliferation marker genes PCNA and cyclinD1. FACS analysis revealed that PPARγ knockout significantly increased the number of cells accumulating in the S phase and decreased the number of cells accumulating in the G1/G0 phase. Oil Red O staining and gene expression analysis showed both PPARγ2-specific and PPARγ knockouts dramatically reduced capacity for adipogenic differentiation. To corroborate our previous findings, PPARγ1 and PPARγ2 expression were restored in PPARγ-/- cells by using the lentiviruses expressing chicken PPARγ1 (LV-PPARγ1) and PPARγ2 (LV-PPARγ2), respectively. Subsequent assays showed that restoration of expression of either PPARγ1 or PPARγ2 suppressed proliferation and stimulated differentiation of the PPARγ-/- cells. By comparison, PPARγ2 had stronger anti-proliferative and pro-adipogenic effects than PPARγ1. To understand the molecular mechanism underlying their differential effects on differentiation of the PPARγ-/- cells, we performed RNA-seq in the PPARγ-/- cells in which individual PPARγ isoform expression was restored at 72 h of differentiation. Transcriptomic analysis revealed that restoring PPARγ1 expression caused far more differentially expressed genes (DEGs) than restoring PPARγ2 expression. GO and KEGG pathway enrichment analyses indicated that PPARγ1 and PPARγ2 had distinct and overlapping functions in adipogenesis. Taken together, our results clearly indicate that PPARγ1 and PPARγ2 differentially impact chicken adipogenesis.
Collapse
Affiliation(s)
- Yang Jing
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, China
| | - Fang Mu
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, China
| | - Xiaoxu Xing
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, China
| | - Jiaxin Huang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, China
| | - Ming Lou
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, China
| | - Haidong Xu
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, China
| | - Bolin Ning
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, China
| | - Yuqi Lou
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, China
| | - Zhihui Gao
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, China
| | - Haoyu Luo
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, China
| | - Xiaohong Yan
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, China
| | - Hui Li
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, China
| | - Ning Wang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin 150030, China
| |
Collapse
|
12
|
Ballav S, Biswas B, Sahu VK, Ranjan A, Basu S. PPAR-γ Partial Agonists in Disease-Fate Decision with Special Reference to Cancer. Cells 2022; 11:3215. [PMID: 36291082 PMCID: PMC9601205 DOI: 10.3390/cells11203215] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 10/03/2022] [Accepted: 10/09/2022] [Indexed: 11/16/2023] Open
Abstract
Peroxisome proliferator-activated receptor-γ (PPAR-γ) has emerged as one of the most extensively studied transcription factors since its discovery in 1990, highlighting its importance in the etiology and treatment of numerous diseases involving various types of cancer, type 2 diabetes mellitus, autoimmune, dermatological and cardiovascular disorders. Ligands are regarded as the key determinant for the tissue-specific activation of PPAR-γ. However, the mechanism governing this process is merely a contradictory debate which is yet to be systematically researched. Either these receptors get weakly activated by endogenous or natural ligands or leads to a direct over-activation process by synthetic ligands, serving as complete full agonists. Therefore, fine-tuning on the action of PPAR-γ and more subtle modulation can be a rewarding approach which might open new avenues for the treatment of several diseases. In the recent era, researchers have sought to develop safer partial PPAR-γ agonists in order to dodge the toxicity induced by full agonists, akin to a balanced activation. With a particular reference to cancer, this review concentrates on the therapeutic role of partial agonists, especially in cancer treatment. Additionally, a timely examination of their efficacy on various other disease-fate decisions has been also discussed.
Collapse
Affiliation(s)
- Sangeeta Ballav
- Cancer and Translational Research Centre, Dr. D. Y. Patil Biotechnology and Bioinformatics Institute, Dr. D. Y. Patil Vidyapeeth, Tathawade, Pune 411033, India
| | - Bini Biswas
- Cancer and Translational Research Centre, Dr. D. Y. Patil Biotechnology and Bioinformatics Institute, Dr. D. Y. Patil Vidyapeeth, Tathawade, Pune 411033, India
| | - Vishal Kumar Sahu
- Cancer and Translational Research Centre, Dr. D. Y. Patil Biotechnology and Bioinformatics Institute, Dr. D. Y. Patil Vidyapeeth, Tathawade, Pune 411033, India
| | - Amit Ranjan
- Cancer and Translational Research Centre, Dr. D. Y. Patil Biotechnology and Bioinformatics Institute, Dr. D. Y. Patil Vidyapeeth, Tathawade, Pune 411033, India
| | - Soumya Basu
- Cancer and Translational Research Centre, Dr. D. Y. Patil Biotechnology and Bioinformatics Institute, Dr. D. Y. Patil Vidyapeeth, Tathawade, Pune 411033, India
| |
Collapse
|
13
|
Huang CJ, Choo KB, Chen CF. The MicroRNA-Signaling-Peroxisome Proliferator-Activated Receptor Gamma Connection in the Modulation of Adipogenesis: Bioinformatics Projection on Chicken. Poult Sci 2022; 101:101950. [PMID: 35689996 PMCID: PMC9192975 DOI: 10.1016/j.psj.2022.101950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 03/19/2022] [Accepted: 04/15/2022] [Indexed: 10/29/2022] Open
|
14
|
Cui T, Huang J, Sun Y, Ning B, Mu F, You X, Guo Y, Li H, Wang N. KLF2 Inhibits Chicken Preadipocyte Differentiation at Least in Part via Directly Repressing PPARγ Transcript Variant 1 Expression. Front Cell Dev Biol 2021; 9:627102. [PMID: 33634127 PMCID: PMC7901985 DOI: 10.3389/fcell.2021.627102] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Accepted: 01/11/2021] [Indexed: 12/30/2022] Open
Abstract
Peroxisome proliferator-activated receptor gamma (PPARγ) is the master regulatory factor of preadipocyte differentiation. As a result of alternative splicing and alternative promoter usage, PPARγ gene generates multiple transcript variants encoding two protein isoforms. Krüppel-like factor 2 (KLF2) plays a negative role in preadipocyte differentiation. However, its underlying mechanism remains incompletely understood. Here, we demonstrated that KLF2 inhibited the P1 promoter activity of the chicken PPARγ gene. Bioinformatics analysis showed that the P1 promoter harbored a conserved putative KLF2 binding site, and mutation analysis showed that the KLF2 binding site was required for the KLF2-mediated transcription inhibition of the P1 promoter. ChIP, EMSA, and reporter gene assays showed that KLF2 could directly bind to the P1 promoter regardless of methylation status and reduced the P1 promoter activity. Consistently, histone modification analysis showed that H3K9me2 was enriched and H3K27ac was depleted in the P1 promoter upon KLF2 overexpression in ICP1 cells. Furthermore, gene expression analysis showed that KLF2 overexpression reduced the endogenous expression of PPARγ transcript variant 1 (PPARγ1), which is driven by the P1 promoter, in DF1 and ICP1 cells, and that the inhibition of ICP1 cell differentiation by KLF2 overexpression was accompanied by the downregulation of PPARγ1 expression. Taken together, our results demonstrated that KLF2 inhibits chicken preadipocyte differentiation at least inpart via direct downregulation of PPARγ1 expression.
Collapse
Affiliation(s)
- Tingting Cui
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, China.,College of Life Science and Agriculture Forestry, Qiqihar University, Qiqihar, China.,Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin, China.,Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin, China
| | - Jiaxin Huang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, China.,Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin, China.,Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin, China
| | - Yingning Sun
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, China.,College of Life Science and Agriculture Forestry, Qiqihar University, Qiqihar, China.,Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin, China.,Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin, China
| | - Bolin Ning
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, China.,Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin, China.,Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin, China
| | - Fang Mu
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, China.,Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin, China.,Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin, China
| | - Xin You
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, China.,Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin, China.,Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin, China
| | - Yaqi Guo
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, China.,Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin, China.,Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin, China
| | - Hui Li
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, China.,Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin, China.,Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin, China
| | - Ning Wang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, China.,Key Laboratory of Chicken Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Harbin, China.,Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, Harbin, China
| |
Collapse
|