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Guo J, Wang J, Zhang K, Yang Z, Li B, Pan Y, Yu H, Yu S, Abbas Raza SH, Kuraz Abebea B, Zan L. Molecular cloning of TPM3 gene in qinchuan cattle and its effect on myoblast proliferation and differentiation. Anim Biotechnol 2024; 35:2345238. [PMID: 38775564 DOI: 10.1080/10495398.2024.2345238] [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] [Indexed: 05/30/2024]
Abstract
Tropomyosin 3 (TPM3) plays a significant role as a regulatory protein in muscle contraction, affecting the growth and development of skeletal muscles. Despite its importance, limited research has been conducted to investigate the influence of TPM3 on bovine skeletal muscle development. Therefore, this study revealed the role of TPM3 in bovine myoblast growth and development. This research involved conducting a thorough examination of the Qinchuan cattle TPM3 gene using bioinformatics tools to examine its sequence and structural characteristics. Furthermore, TPM3 expression was evaluated in various bovine tissues and cells using quantitative real-time polymerase chain reaction (qRT-PCR). The results showed that the coding region of TPM3 spans 855 bp, with the 161st base being the T base, encoding a protein with 284 amino acids and 19 phosphorylation sites. This protein demonstrated high conservation across species while displaying a predominant α-helix secondary structure despite being an unstable acidic protein. Notably, a noticeable increase in TPM3 expression was observed in the longissimus dorsi muscle and myocardium of calves and adult cattle. Expression patterns varied during different stages of myoblast differentiation. Functional studies that involved interference with TPM3 in Qinchuan cattle myoblasts revealed a very significantly decrease in S-phase cell numbers and EdU-positive staining (P < 0.01), and disrupted myotube morphology. Moreover, interference with TPM3 resulted in significantly (P < 0.05) or highly significantly (P < 0.01) decreased mRNA and protein levels of key proliferation and differentiation markers, indicating its role in the modulation of myoblast behavior. These findings suggest that TPM3 plays an essential role in bovine skeletal muscle growth by influencing myoblast proliferation and differentiation. This study provides a foundation for further exploration into the mechanisms underlying TPM3-mediated regulation of bovine muscle development and provides valuable insights that could guide future research directions as well as potential applications for livestock breeding and addressing muscle-related disorders.
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Affiliation(s)
- Juntao Guo
- College of Animal Science and Technology, Northwest A and F University, Yangling, China
| | - Jianfang Wang
- College of Animal Science and Technology, Northwest A and F University, Yangling, China
| | - Ke Zhang
- College of Animal Science and Technology, Northwest A and F University, Yangling, China
| | - Zhimei Yang
- College of Animal Science and Technology, Northwest A and F University, Yangling, China
| | - Bingzhi Li
- Yangling Vocational and Technical College, Yangling, China
| | - Yueting Pan
- College of Animal Science and Technology, Northwest A and F University, Yangling, China
| | - Hengwei Yu
- College of Animal Science and Technology, Northwest A and F University, Yangling, China
| | - Shengchen Yu
- College of Animal Science and Technology, Northwest A and F University, Yangling, China
| | - Sayed Haidar Abbas Raza
- Guangdong Provincial Key Laboratory of Food Quality and Safety/Nation-Local Joint Engineering Research Center for Machining and Safety of Livestock and Poultry Products, South China Agricultural University, Guangzhou, China
| | - Belete Kuraz Abebea
- College of Animal Science and Technology, Northwest A and F University, Yangling, China
| | - Linsen Zan
- College of Animal Science and Technology, Northwest A and F University, Yangling, China
- National Beef Cattle Improvement Center, Yangling, China
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Cavalcante IL, Silva Barros CCD, Colares DF, Cruz VMS, de Andrade BAB, Nonaka CFW, Rabenhorst SHB, Cavalcante RB. BubR1 and cyclin B1 immunoexpression in pleomorphic adenoma and polymorphous adenocarcinoma of minor salivary glands. Pathol Res Pract 2024; 253:154961. [PMID: 38043194 DOI: 10.1016/j.prp.2023.154961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 11/14/2023] [Accepted: 11/16/2023] [Indexed: 12/05/2023]
Abstract
The immunoexpression of BubR1 and cyclin B1 in pleomorphic adenoma (PA) and polymorphic adenocarcinoma (PAC) in minor salivary glands is poorly studied. Thus, a retrospective and observational study was performed to provide a better understanding of the role and immunopositivity patterns of these proteins in these lesions. Sixteen cases of PA and 16 cases of PAC were selected. Parenchyma cells were submitted to quantitative immunohistochemical analysis through the labeling index. Cytoplasmic immunoexpression of BubR1 was observed in neoplastic cells from all analyzed PA and PAC cases. All PA cases and 93.7% of PAC exhibited nuclear immunoexpression of BubR1. Higher cytoplasmic and nuclear immunoexpression of BubR1 was observed in PAC (p = 0.001 and p = 0.122, respectively). Cytoplasmic immunoexpression of cyclin B1 was observed in all cases of PA and PAC, with a higher labeling index in the latter (p < 0.001). There was a significant positive correlation between nuclear and cytoplasmic BubR1 immunoexpressions (p < 0.001) in PA and a significant negative correlation between BubR1 and cyclin B1 cytoplasmic immunoexpressions (p = 0.014) in PAC. The higher cytoplasmic and nuclear immunoexpression of BubR1 in PACs suggests the continuous maintenance of neoplastic cells in the cell cycle and migration. Higher immunoexpression of cyclin B1 supports this lesion's enhanced proliferative and migration ability.
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Affiliation(s)
- Israel Leal Cavalcante
- Oral Pathology Section, Department of Dentistry, University of Fortaleza, Fortaleza, CE, Brazil; Department of Oral Diagnosis and Pathology, School of Dentistry, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
| | - Caio César da Silva Barros
- Postgraduate Program in Dental Sciences, Oral Pathology and Medicine, Department of Dentistry, Federal University of Rio Grande do Norte, Natal, RN, Brazil
| | - Débora Frota Colares
- Postgraduate Program in Dental Sciences, Oral Pathology and Medicine, Department of Dentistry, Federal University of Rio Grande do Norte, Natal, RN, Brazil
| | - Vitória Maria Sousa Cruz
- Oral Pathology Section, Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
| | | | | | - Silvia Helena Barem Rabenhorst
- Postgraduate Program in Biological Sciences, Molecular Genetics Laboratory, Department of Pathology and Forensic Medicine, School of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil
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Wang XX, Wu HY, Yang Y, Ma MM, Zhang YW, Huang HZ, Li SH, Pan SL, Tang J, Peng JH. CCNB1 is involved in bladder cancer pathogenesis and silencing CCNB1 decelerates tumor growth and improves prognosis of bladder cancer. Exp Ther Med 2023; 26:382. [PMID: 37456156 PMCID: PMC10347295 DOI: 10.3892/etm.2023.12081] [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: 02/14/2023] [Accepted: 06/08/2023] [Indexed: 07/18/2023] Open
Abstract
In search of an effective therapeutic target for bladder urothelial carcinoma (BLCA), the present study aimed to investigate the expression of cyclin B1 (CCNB1) and its putative mechanism in BLCA. BLCA sequencing data from Gene Expression Omnibus and The Cancer Genome Atlas were used to analyze expression of CCNB1 mRNA and high CCNB1 expression had a poorer prognosis compared with those with low expression. Immunohistochemistry (IHC) samples collected from the Human Protein Atlas database were analyzed for CCNB1 protein expression. Short hairpin (sh) CCNB1-transfected BLCA T24 and 5637 cells were used to investigate the effects of CCNB1 and inhibit the proliferation, migration and invasion of BLCA cells, affect the cell cycle distribution and promote apoptosis of 5637 cells. A sh-CCNB1 BLCA chicken embryo chorioallantoic membrane (CAM) transplantation model was established to observe the impacts of sh-CCNB1 on the tumorigenesis of BLCA in vivo. Analysis of sequencing data showed that CCNB1 mRNA was significantly elevated in tumor and BLCA compared with normal tissues [standardized mean difference (SMD)=1.21; 95% CI: 0.26-2.15; I²=95.9%]. IHC indicated that CCNB1 protein was localized in the nucleus and cytoplasm and was significantly increased in BLCA tumor tissues. The in vitro tests demonstrated that proliferation of T24 and 5637 cells transfected with sh-CCNB1 was significantly inhibited and cell migration and invasion ability were significantly decreased. sh-CCNB1 decreased the percentage of T24 cells in G0/G1, 5637 cells in the G0/G1 phase and S phase and increased percentage of 5637 cells in the G2/M phase and increased early apoptosis of 5637 cells. The in vivo experiments demonstrated that the mass of transplanted tumors was significantly decreased compared with the control group following silencing of CCNB1. The present results suggested that CCNB1 was involve in the development and prognosis of BLCA and silencing of CCNB1 may be a promising targeted therapy for BLCA.
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Affiliation(s)
- Xue-Xuan Wang
- Department of Pathophysiology, Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
- Key Laboratory of Longevity and Aging-Related Diseases, Guangxi Medical University, Ministry of Education, Nanning, Guangxi 530021, P.R. China
| | - Hua-Yu Wu
- Medical Experimental Center, The First People's Hospital of Nanning, The Fifth Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530022, P.R. China
| | - Ying Yang
- Department of Pathophysiology, Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Miao-Miao Ma
- Department of Pathophysiology, Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Yi-Wei Zhang
- Department of Pathophysiology, Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Hai-Zhen Huang
- Department of Pathophysiology, Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Sheng-Hua Li
- Department of Urology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Shang-Ling Pan
- Department of Pathophysiology, Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
- Key Laboratory of Longevity and Aging-Related Diseases, Guangxi Medical University, Ministry of Education, Nanning, Guangxi 530021, P.R. China
| | - Jun Tang
- Department of Pathophysiology, Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
- Key Laboratory of Longevity and Aging-Related Diseases, Guangxi Medical University, Ministry of Education, Nanning, Guangxi 530021, P.R. China
| | - Jun-Hua Peng
- Department of Pathophysiology, Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
- Key Laboratory of Longevity and Aging-Related Diseases, Guangxi Medical University, Ministry of Education, Nanning, Guangxi 530021, P.R. China
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Du J, Zhao H, Song G, Pang Y, Jiang L, Zan L, Wang H. Overexpression of cholinergic receptor nicotinic gamma subunit inhibits proliferation and differentiation of bovine preadipocytes. Anim Biosci 2023; 36:200-208. [PMID: 36108684 PMCID: PMC9834735 DOI: 10.5713/ab.22.0144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Accepted: 08/14/2022] [Indexed: 02/03/2023] Open
Abstract
OBJECTIVE Muscle acetylcholine receptors have five alpha subunits (α, β, δ, ε, or γ), and cholinergic receptor nicotinic gamma subunit (CHRNG) is the γ subunit. It may also play an essential role in biological processes, including cell differentiation, growth, and survival, while the role of CHRNG has not been studied in the literature. Therefore, the purpose of this study is to clarify the effect of CHRNG on the proliferation and differentiation of bovine preadipocytes. METHODS We constructed a CHRNG overexpression adenovirus vector and successfully overexpressed it on bovine preadipocytes. The effects of CHRNG on bovine preadipocyte proliferation were detected by Edu assay, cell counting Kit-8 (CCK-8), real-time fluorescence quantitative polymerase chain reaction (RT-qPCR), Western blot and other techniques. We also performed oil red O, RT-qPCR, Western blot to explore its effect on the differentiation of preadipocytes. RESULTS The results of Edu proliferation experiments showed that the number of EDU-positive cells in the overexpression group was significantly less. CCK-8 experiments found that the optical density values of the cells in the overexpression group were lower than those of the control group, the mRNA levels of proliferating cell nuclear antigen (PCNA), cyclin A2 (CCNA2), cyclin B1 (CCNB1), cyclin D2 (CCND2) decreased significantly after CHRNG gene overexpression, the mRNA levels of cyclin dependent kinase inhibitor 1A (CDKN1A) increased significantly, and the protein levels of PCNA, CCNB1, CCND2 decreased significantly. Overexpression of CHRNG inhibited the differentiation of bovine preadipocytes. The results of oil red O and triglyceride determination showed that the size and speed of lipid droplets accumulation in the overexpression group were significantly lower. The mRNA and protein levels of peroxisome proliferator activated receptor gamma (PPARγ), CCAAT enhancer binding protein alpha (CEBPα), fatty acid binding protein 4 (FABP4), fatty acid synthase (FASN) decreased significantly. CONCLUSION Overexpression of CHRNG in bovine preadipocytes inhibits the proliferation and differentiation of bovine preadipocytes.
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Affiliation(s)
- Jiawei Du
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100,
China
| | - Hui Zhao
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100,
China
| | - Guibing Song
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100,
China
| | - Yuan Pang
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100,
China
| | - Lei Jiang
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100,
China
| | - Linsen Zan
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100,
China,National Beef Cattle Improvement Center, Northwest A&F University, Yangling, 712100,
China
| | - Hongbao Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100,
China,National Beef Cattle Improvement Center, Northwest A&F University, Yangling, 712100,
China,Corresponding Author: Hongbao Wang, Tel: +86-158-2903-0403, E-mail:
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5
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Xiao Y, Chen J, Yang S, Sun H, Xie L, Li J, Jing N, Zhu X. Maternal mRNA deadenylation and allocation via Rbm14 condensates facilitate vertebrate blastula development. EMBO J 2023; 42:e111364. [PMID: 36477743 PMCID: PMC9890236 DOI: 10.15252/embj.2022111364] [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: 04/06/2022] [Revised: 11/12/2022] [Accepted: 11/17/2022] [Indexed: 12/12/2022] Open
Abstract
Early embryonic development depends on proper utilization and clearance of maternal transcriptomes. How these processes are spatiotemporally regulated remains unclear. Here we show that nuclear RNA-binding protein Rbm14 and maternal mRNAs co-phase separate into cytoplasmic condensates to facilitate vertebrate blastula-to-gastrula development. In zebrafish, Rbm14 condensates were highly abundant in blastomeres and markedly reduced after prominent activation of zygotic transcription. They concentrated at spindle poles by associating with centrosomal γ-tubulin puncta and displayed mainly asymmetric divisions with a global symmetry across embryonic midline in 8- and 16-cell embryos. Their formation was dose-dependently stimulated by m6 A, but repressed by m5 C modification of the maternal mRNA. Furthermore, deadenylase Parn co-phase separated with these condensates, and this was required for deadenylation of the mRNAs in early blastomeres. Depletion of Rbm14 impaired embryonic cell differentiations and full activations of the zygotic genome in both zebrafish and mouse and resulted in developmental arrest at the blastula stage. Our results suggest that cytoplasmic Rbm14 condensate formation regulates early embryogenesis by facilitating deadenylation, protection, and mitotic allocation of m6 A-modified maternal mRNAs, and by releasing the poly(A)-less transcripts upon regulated disassembly to allow their re-polyadenylation and translation or clearance.
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Affiliation(s)
- Yue Xiao
- Key Laboratory of Systems Health Science of Zhejiang Province, School of Life Science, Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhouChina
| | - Jiehui Chen
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell ScienceChinese Academy of SciencesShanghaiChina
| | - Suming Yang
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell ScienceChinese Academy of SciencesShanghaiChina
| | - Honghua Sun
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell ScienceChinese Academy of SciencesShanghaiChina
| | - Lele Xie
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell ScienceChinese Academy of SciencesShanghaiChina
| | - Jinsong Li
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell ScienceChinese Academy of SciencesShanghaiChina
| | - Naihe Jing
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell ScienceChinese Academy of SciencesShanghaiChina
- Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory)GuangzhouChina
| | - Xueliang Zhu
- Key Laboratory of Systems Health Science of Zhejiang Province, School of Life Science, Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhouChina
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell ScienceChinese Academy of SciencesShanghaiChina
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6
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He M, Jiao S, Zhang R, Ye D, Wang H, Sun Y. Translational control by maternal Nanog promotes oogenesis and early embryonic development. Development 2022; 149:286111. [PMID: 36533583 DOI: 10.1242/dev.201213] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 11/09/2022] [Indexed: 12/23/2022]
Abstract
Many maternal mRNAs are translationally repressed during oocyte development and spatio-temporally activated during early embryogenesis, which is crucial for oocyte and early embryo development. By analyzing maternal mutants of nanog (Mnanog) in zebrafish, we demonstrated that Nanog tightly controls translation of maternal mRNA during oogenesis via transcriptional repression of eukaryotic translation elongation factor 1 alpha 1, like 2 (eef1a1l2). Loss of maternal Nanog led to defects of egg maturation, increased endoplasmic reticulum stress, and an activated unfold protein response, which was caused by elevated translational activity. We further demonstrated that Nanog, as a transcriptional repressor, represses the transcription of eefl1a1l2 by directly binding to the eef1a1l2 promoter in oocytes. More importantly, depletion of eef1a1l2 in nanog mutant females effectively rescued the elevated translational activity in oocytes, oogenesis defects and embryonic defects of Mnanog embryos. Thus, our study demonstrates that maternal Nanog regulates oogenesis and early embryogenesis through translational control of maternal mRNA via a mechanism whereby Nanog acts as a transcriptional repressor to suppress transcription of eef1a1l2.
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Affiliation(s)
- Mudan He
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Wuhan 430072, China.,College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shengbo Jiao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Wuhan 430072, China.,College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ru Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Wuhan 430072, China.,College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ding Ye
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Wuhan 430072, China.,College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Houpeng Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Wuhan 430072, China.,College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yonghua Sun
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Wuhan 430072, China.,College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China.,Hubei Hongshan Laboratory, Wuhan 430070, China
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7
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Palmitic Acid-Induced miR-429-3p Impairs Myoblast Differentiation by Downregulating CFL2. Int J Mol Sci 2021; 22:ijms222010972. [PMID: 34681631 PMCID: PMC8535884 DOI: 10.3390/ijms222010972] [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: 08/04/2021] [Revised: 09/27/2021] [Accepted: 09/29/2021] [Indexed: 12/27/2022] Open
Abstract
MicroRNAs are known to play a critical role in skeletal myogenesis and maintenance, and cofilin-2 (CFL2) is necessary for actin cytoskeleton dynamics and myogenic differentiation. Nonetheless, target molecules and the modes of action of miRNAs, especially those responsible for the inhibitory mechanism on the myogenesis by saturated fatty acids (SFA) or obesity, still remain unclear. Here, we reported the role played by miR-429-3p on CFL2 expression, actin filament dynamics, myoblast proliferation, and myogenic differentiation in C2C12 cells. Palmitic acid (PA), the most abundant SFA in diet, inhibited the myogenic differentiation of myoblasts, accompanied by CFL2 reduction and miR-429-3p induction. Interestingly, miR-429-3p suppressed the expression of CFL2 by targeting the 3'UTR of CFL2 mRNA directly. Transfection of miR-429-3p mimic in myoblasts increased F-actin formation and augmented nuclear YAP level, thereby promoting cell cycle progression and myoblast proliferation. Moreover, miR-429-3p mimic drastically suppressed the expressions of myogenic factors, such as MyoD, MyoG, and MyHC, and impaired myogenic differentiation of C2C12 cells. Therefore, this study unveiled the crucial role of miR-429-3p in myogenic differentiation through the suppression of CFL2 and provided implications of SFA-induced miRNA in the regulation of actin dynamics and skeletal myogenesis.
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8
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Luan Y, Zhao J, Han H, Shen J, Tang S, Cheng L. Toxicologic effect and transcriptome analysis for short-term orally dosed enrofloxacin combined with two veterinary antimicrobials on rat liver. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 220:112398. [PMID: 34116333 DOI: 10.1016/j.ecoenv.2021.112398] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 05/08/2021] [Accepted: 05/30/2021] [Indexed: 06/12/2023]
Abstract
Presently, toxicological assessment of multiple veterinary antimicrobials has not been performed on mammals. In this study, we assessed the short-term toxicity of enrofloxacin (E) combined with colistin (C) and quinocetone (Q). Young male rats were orally dosed drug mixtures and single drugs in 14 consecutive days, each at the dose of 20, 80, and 400 mg/(kg·BW) for environmental toxicologic study. The results showed that at the high dose treatment, the combination of E + C+Q significantly decreased body intake, lymphocytes count on rats; significantly increased the values of Alanine aminotransferase (ALT), Glutamic oxaloacetic transaminase (AST) and, cholinesterase (CHE); it also got the severest histopathological changes, where sinusoidal congestion and a large number of black particles in sinusoids were observed. This means E + C+Q in the high dose groups was able to cause significant damage to the liver. Other combinations or doses did not induce significant liver damage. Transcriptome analysis was then performed on rats in high dose group for further research. For E + C and E + Q, an amount of 375 and 480 differently expressed genes were filtered out, revealing their possible underlying effect on genomes. For E + C+Q, a weighted gene co-expression network analysis was performed and 96 hub genes were identified to reveal the specific effect induced by this combination. This study indicates that joint toxicity should be taken into consideration when involving the risk assessment of these antimicrobials.
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Affiliation(s)
- Yehui Luan
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Junjie Zhao
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Hongfei Han
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Jianzhong Shen
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Shusheng Tang
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Linli Cheng
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China; Beijing Key Laboratory of Animal-derived Food Safety Testing Technology, Beijing 100193, China; Chinese National Reference Laboratory for Veterinary Drug Residues, Beijing 100193, China.
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9
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Zhu M, Cui S, Hao Z, Wang W, Yang Q, Chen C, Wang J, Zhou Q. [Curcumin induces human lens epithelial cell apoptosis and cell cycle arrest by inhibiting Wnt/β-catenin signaling pathway]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2021; 41:722-728. [PMID: 34134960 DOI: 10.12122/j.issn.1673-4254.2021.05.13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To investigate the effect of curcumin on cell cycle and apoptosis of human lens epithelial cells and the possible molecular mechanism. OBJECTIVE Cultured human lens epithelial cell line HLEC-SRA01/04 was treated with 20, 40 and 60 μmol/L curcumin for 24 or 48 h. The cell proliferation inhibition rate was determined using MTT assay, and the changes in cell cycle, mitochondrial membrane potential and apoptosis rate were analyzed with flow cytometry. Western blotting was used to detect the expression levels of caspase-9, caspase-3, Bcl-2, Bax, cyclin B1, CDK1, β-catenin, c-myc, and cyclin D1 in the cells. OBJECTIVE Curcumin concentration- and time-dependently inhibited the proliferation of in HLEC-SRA01/04 cells as compared with the control cells (P < .05). Flow cytometric analysis showed that curcumin significantly increased apoptosis rate and cell percentage in G2/M phase and lowered mitochondrial membrane potential of HLEC-SRA01/04 cells in a concentrationdependent manner (P < 0.05). The results of Western blotting showed that curcumin also concentration-dependently increased the cellular expressions of caspase-3, caspase-9 and Bax and lowered the expressions of Bcl-2, cyclin B1, CDK1 and β-catenin along with the downstream proteins cyclin D1 and c-myc in the Wnt/β-catenin signaling pathway (P < 0.05). OBJECTIVE Curcumin inhibits the proliferation of HLEC-SRA01/04 cells possibly by inhibiting the Wnt/β-catenin signaling pathway and causing cell cycle arrest to induce cell apoptosis.
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Affiliation(s)
- M Zhu
- Department of Ophthalmology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China.,Anhui Provincial Key Laboratory of Translational Cancer Research, Bengbu 233030, China
| | - S Cui
- Department of Ophthalmology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China.,Anhui Provincial Key Laboratory of Translational Cancer Research, Bengbu 233030, China
| | - Z Hao
- Department of Ophthalmology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - W Wang
- Anhui Provincial Key Laboratory of Translational Cancer Research, Bengbu 233030, China
| | - Q Yang
- Anhui Provincial Key Laboratory of Translational Cancer Research, Bengbu 233030, China
| | - C Chen
- Anhui Provincial Key Laboratory of Translational Cancer Research, Bengbu 233030, China
| | - J Wang
- Department of Ophthalmology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - Q Zhou
- Department of Ophthalmology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
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10
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Nguyen MT, Min KH, Lee W. MiR-96-5p Induced by Palmitic Acid Suppresses the Myogenic Differentiation of C2C12 Myoblasts by Targeting FHL1. Int J Mol Sci 2020; 21:ijms21249445. [PMID: 33322515 PMCID: PMC7764195 DOI: 10.3390/ijms21249445] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 12/09/2020] [Accepted: 12/10/2020] [Indexed: 12/31/2022] Open
Abstract
Skeletal myogenesis is a multi-stage process that includes the cell cycle exit, myogenic transcriptional activation, and morphological changes to form multinucleated myofibers. Recent studies have shown that saturated fatty acids (SFA) and miRNAs play crucial roles in myogenesis and muscle homeostasis. Nevertheless, the target molecules and myogenic regulatory mechanisms of miRNAs are largely unknown, particularly when myogenesis is dysregulated by SFA deposition. This study investigated the critical role played by miR-96-5p on the myogenic differentiation in C2C12 myoblasts. Long-chain SFA palmitic acid (PA) significantly reduced FHL1 expression and inhibited the myogenic differentiation of C2C12 myoblasts but induced miR-96-5p expression. The knockdown of FHL1 by siRNA stimulated cell proliferation and inhibited myogenic differentiation of myoblasts. Interestingly, miR-96-5p suppressed FHL1 expression by directly targeting the 3’UTR of FHL1 mRNA. The transfection of an miR-96-5p mimic upregulated the expressions of cell cycle-related genes, such as PCNA, CCNB1, and CCND1, and increased myoblast proliferation. Moreover, the miR-96-5p mimic inhibited the expressions of myogenic factors, such as myoblast determination protein (MyoD), myogenin (MyoG), myocyte enhancer factor 2C (MEF2C), and myosin heavy chain (MyHC), and dramatically impeded differentiation and fusion of myoblasts. Overall, this study highlights the role of miR-96-5p in myogenesis via FHL1 suppression and suggests a novel regulatory mechanism for myogenesis mediated by miRNA in a background of obesity.
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Affiliation(s)
- Mai Thi Nguyen
- Department of Biochemistry, Dongguk University College of Medicine, 123 Dongdae-ro, Gyeongju 38066, Korea; (M.T.N.); (K.-H.M.)
| | - Kyung-Ho Min
- Department of Biochemistry, Dongguk University College of Medicine, 123 Dongdae-ro, Gyeongju 38066, Korea; (M.T.N.); (K.-H.M.)
| | - Wan Lee
- Department of Biochemistry, Dongguk University College of Medicine, 123 Dongdae-ro, Gyeongju 38066, Korea; (M.T.N.); (K.-H.M.)
- Channelopathy Research Center (CRC), Dongguk University College of Medicine, 32 Dongguk-ro, Ilsan Dong-gu, 10326 Goyang, Korea
- Correspondence: ; Tel.: +82-54-770-2409; Fax: +82-54-770-2447
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11
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CFL2 is an essential mediator for myogenic differentiation in C2C12 myoblasts. Biochem Biophys Res Commun 2020; 533:710-716. [PMID: 33187645 DOI: 10.1016/j.bbrc.2020.11.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 11/05/2020] [Indexed: 12/29/2022]
Abstract
CFL2, a skeletal muscle-specific member of the actin depolymerizing factor/cofilin protein family, is known to be involved in the regulation of actin filament dynamics. Although the impact of CFL2 has been studied in human myopathy, its functional contribution to myogenic differentiation, in terms of its effects on cell proliferation, cell cycle, and myogenic factor modulation, remains largely unknown. Here, we report that CFL2 is required for the myogenic differentiation of C2C12 myoblasts by regulating proliferation and myogenic transcription factors expressions. CFL2 expression was induced during myogenic progression, and its knockdown by siRNA in myoblasts enhanced phalloidin staining, indicating increased filamentous actin formation. Interestingly, CFL2 depletion stimulated cell proliferation and induced a cell cycle shift from G0/G1 to G2/M phases, which are known to inhibit progenitor cell differentiation. CFL2 knockdown markedly downregulated the protein expressions of myogenic transcription factors (MyoD, MyoG, and MEF2C) and thereby impaired the differentiation and myotube formation of C2C12 myoblasts. Collectively, this study highlights the roles played by CFL2 on cell cycle progression and proliferation and suggests a novel regulatory mechanism of myogenic differentiation mediated by CFL2.
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12
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Yan X, Fu X, Guo ZX, Liu XP, Liu TZ, Li S. Construction and validation of an eight-gene signature with great prognostic value in bladder cancer. J Cancer 2020; 11:1768-1779. [PMID: 32194788 PMCID: PMC7052873 DOI: 10.7150/jca.38741] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 11/30/2019] [Indexed: 12/24/2022] Open
Abstract
Bladder cancer (BC) is one of the most common malignancies in urinary system with a common malignancy in urinary system with a high mortality and recurrence rate, so we attempt to construct a gene signature to predict the prognosis of BCs. We initially established a co-expression network by performing WGCNA analysis and further identified magenta module as key module (P = 8e-05, R2 = 0.4). Subsequently, we screened 12 genes associated with survival from the key module, which were selected to construct an eight-gene signature by establishing a LASSO Cox model. Moreover, we reckoned the risk score (RS) of each sample, through which we could divide samples into two groups (the high-risk and low-risk groups) and verify the signature, in the training set and 3 validation sets (internal test set, GSE13507and E-MTAB-4321). This signature could distinguish between the high- and low- risk patients well (survival analysis: P = 0.015; AUC: 0.61 at 1 year, 0.61 at 3 years and 0.61 at 5 years). In the validation sets, this signature also showed good performance, which was consistent with the training test. Furthermore, we plotted a nomogram to predict the possibility of the overall survival (OS) and three calibration curves to predict the effectiveness of the nomogram, which suggested good value and clinical utility of the nomogram. In conclusion, we established an eight-gene signature, which was probably effective in the prediction of prognosis of patients with BC.
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Affiliation(s)
- Xin Yan
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China.,Department of Biological Repositories, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Xun Fu
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Zi-Xin Guo
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Xiao-Ping Liu
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Tong-Zu Liu
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Sheng Li
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China.,Department of Biological Repositories, Zhongnan Hospital of Wuhan University, Wuhan 430071, China.,Human Genetics Resource Preservation Center of Hubei Province, Wuhan 430071, China
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PFN2a Suppresses C2C12 Myogenic Development by Inhibiting Proliferation and Promoting Apoptosis via the p53 Pathway. Cells 2019; 8:cells8090959. [PMID: 31450751 PMCID: PMC6770762 DOI: 10.3390/cells8090959] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Revised: 08/17/2019] [Accepted: 08/19/2019] [Indexed: 12/12/2022] Open
Abstract
Skeletal muscle plays a crucial role in physical activity and in regulating body energy and protein balance. Myoblast proliferation, differentiation, and apoptosis are indispensable processes for myoblast myogenesis. Profilin 2a (PFN2a) is a ubiquitous actin monomer-binding protein and promotes lung cancer growth and metastasis through suppressing the nuclear localization of histone deacetylase 1 (HDAC1). However, how PFN2a regulates myoblast myogenic development is still not clear. We constructed a C2C12 mouse myoblast cell line overexpressing PFN2a. The CRISPR/Cas9 system was used to study the function of PFN2a in C2C12 myogenic development. We find that PFN2a suppresses proliferation and promotes apoptosis and consequentially downregulates C2C12 myogenic development. The suppression of PFN2a also decreases the amount of HDAC1 in the nucleus and increases the protein level of p53 during C2C12 myogenic development. Therefore, we propose that PFN2a suppresses C2C12 myogenic development via the p53 pathway. Si-p53 (siRNA-p53) reverses the PFN2a inhibitory effect on C2C12 proliferation and the PFN2a promotion effect on C2C12 apoptosis, and then attenuates the suppression of PFN2a on myogenic differentiation. Our results expand understanding of PFN2a regulatory mechanisms in myogenic development and suggest potential therapeutic targets for muscle atrophy-related diseases.
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