|
1
|
Chen YL, Li CY, Wang PH, Wang R, Zhuo X, Zhang Y, Wang SJ, Sun ZP, Chen JH, Cheng X, Zhang ZJ, Ren CH, Wang QJ. Comparative Proteomic Identification of Ram Sperm before and after In Vitro Capacitation. Animals (Basel) 2024; 14:2363. [PMID: 39199899 PMCID: PMC11350773 DOI: 10.3390/ani14162363] [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: 07/14/2024] [Revised: 08/10/2024] [Accepted: 08/12/2024] [Indexed: 09/01/2024] Open
Abstract
Ram sperm undergo a sequence of physiological and biochemical changes collectively termed as capacitation to perform oocyte fertilization. However, the protein changes induced by capacitation remain in need of further exploration. Thus, the present study investigated the comparative proteomic profiling in ram spermatozoa under non-capacitating (NC) and capacitating (CAP) conditions in vitro using a liquid chromatography-tandem mass spectrometry combined with tandem mass tag labeling strategy. As a results, 2050 proteins were identified and quantified; 348 of them were differentially abundant, with 280 of the proteins upregulated and 68 of the proteins downregulated between the CAP and NC spermatozoa, respectively. Functional enrichment analysis indicated that the differentially abundant proteins Prune Exopolyphosphatase 1, Galactose-1-Phosphate Uridylyltransferase, and ATP Citrate Lyase were strictly related to energy production and conversion, and Phosphoglycolate phosphatase, Glucosamine-6-Phosphate Deaminase 1 and 2 were related to metabolism, RNA processing, and vesicular transport pathways. Furthermore, the networks of protein-protein interaction indicated a strong interaction among these differential proteins in annotated pathways such as ubiquitin and transport metabolism. Our findings indicate that capacitation progress might be regulated through different pathways, providing insights into mechanisms involved in ram sperm capacitation and fertility.
Collapse
Affiliation(s)
- Ya-Le Chen
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China; (Y.-L.C.); (P.-H.W.); (R.W.); (X.Z.); (S.-J.W.); (Z.-P.S.); (J.-H.C.); (X.C.); (Z.-J.Z.)
| | - Chun-Yan Li
- Yunnan Animal Science and Veterinary Institute, Kunming 650224, China; (C.-Y.L.); (Y.Z.)
| | - Peng-Hui Wang
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China; (Y.-L.C.); (P.-H.W.); (R.W.); (X.Z.); (S.-J.W.); (Z.-P.S.); (J.-H.C.); (X.C.); (Z.-J.Z.)
| | - Ru Wang
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China; (Y.-L.C.); (P.-H.W.); (R.W.); (X.Z.); (S.-J.W.); (Z.-P.S.); (J.-H.C.); (X.C.); (Z.-J.Z.)
| | - Xian Zhuo
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China; (Y.-L.C.); (P.-H.W.); (R.W.); (X.Z.); (S.-J.W.); (Z.-P.S.); (J.-H.C.); (X.C.); (Z.-J.Z.)
| | - Yan Zhang
- Yunnan Animal Science and Veterinary Institute, Kunming 650224, China; (C.-Y.L.); (Y.Z.)
| | - Shi-Jia Wang
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China; (Y.-L.C.); (P.-H.W.); (R.W.); (X.Z.); (S.-J.W.); (Z.-P.S.); (J.-H.C.); (X.C.); (Z.-J.Z.)
| | - Zhi-Peng Sun
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China; (Y.-L.C.); (P.-H.W.); (R.W.); (X.Z.); (S.-J.W.); (Z.-P.S.); (J.-H.C.); (X.C.); (Z.-J.Z.)
| | - Jia-Hong Chen
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China; (Y.-L.C.); (P.-H.W.); (R.W.); (X.Z.); (S.-J.W.); (Z.-P.S.); (J.-H.C.); (X.C.); (Z.-J.Z.)
- Center of Agriculture Technology Cooperation and Promotion of Dingyuan County, Chuzhou 233200, China
| | - Xiao Cheng
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China; (Y.-L.C.); (P.-H.W.); (R.W.); (X.Z.); (S.-J.W.); (Z.-P.S.); (J.-H.C.); (X.C.); (Z.-J.Z.)
| | - Zi-Jun Zhang
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China; (Y.-L.C.); (P.-H.W.); (R.W.); (X.Z.); (S.-J.W.); (Z.-P.S.); (J.-H.C.); (X.C.); (Z.-J.Z.)
- Center of Agriculture Technology Cooperation and Promotion of Dingyuan County, Chuzhou 233200, China
| | - Chun-Huan Ren
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China; (Y.-L.C.); (P.-H.W.); (R.W.); (X.Z.); (S.-J.W.); (Z.-P.S.); (J.-H.C.); (X.C.); (Z.-J.Z.)
- Center of Agriculture Technology Cooperation and Promotion of Dingyuan County, Chuzhou 233200, China
| | - Qiang-Jun Wang
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China; (Y.-L.C.); (P.-H.W.); (R.W.); (X.Z.); (S.-J.W.); (Z.-P.S.); (J.-H.C.); (X.C.); (Z.-J.Z.)
- Center of Agriculture Technology Cooperation and Promotion of Dingyuan County, Chuzhou 233200, China
| |
Collapse
|
|
2
|
Munipalli SB, Yenugu S. Uroplakin 1a Interacts with Regucalcin and Proteasome Subunit Beta 1. Reprod Sci 2023; 30:3520-3528. [PMID: 37468792 DOI: 10.1007/s43032-023-01292-y] [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: 02/12/2023] [Accepted: 06/30/2023] [Indexed: 07/21/2023]
Abstract
Uroplakins (UPKs) are specialized proteins that plan an important role in protecting the epithelium of the bladder from toxic waste. We recently demonstrated the expression pattern of UPKs in the male reproductive tract and their importance in sperm function in murine models. However, the exact mechanisms through which UPKs affect spermatogenesis are not reported. In this study, using yeast two-hybrid screening was conducted to determine the interaction partners of Uroplakin 1a (UPK1A). Y2H Gold yeast strain overexpressing UPK1A was mated with Y187 yeast strain overexpressing human testis cDNA library and the mutants were plated on SD agar plates containing selection media. Colonies that grew on SD/-Trp, SD/-Leu, SD/-His, and SD/-Ade plates were isolated and evaluated to identify the interacting partners of UPK1A. Regucalcin (RGN) and proteasome subunit beta 1 (PSMB1) were identified as potential interaction partners. Using HEK cells that overexpress UPK1A and RGN or PMSB1, the co-localization and interaction were estimated with high-resolution microscopy and Pearson's coefficient. In light of the fact that UPK1A knockout caused subfertility and that the role of RGN and PSMB1 in spermatogenesis is documented, an interaction between UPK1A and RGN or PSMB1 could be required for spermatogenesis.
Collapse
Affiliation(s)
| | - Suresh Yenugu
- Department of Animal Biology, University of Hyderabad, Hyderabad, 500046, India.
| |
Collapse
|
|
3
|
Jiang C, Lu Y, Zhu R, Zong Y, Huang Y, Wang D, Da Z, Yu B, Shen L, Cao Q. Pyruvate dehydrogenase beta subunit (Pdhb) promotes peripheral axon regeneration by regulating energy supply and gene expression. Exp Neurol 2023; 363:114368. [PMID: 36863478 DOI: 10.1016/j.expneurol.2023.114368] [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: 11/23/2022] [Revised: 02/23/2023] [Accepted: 02/25/2023] [Indexed: 03/04/2023]
Abstract
Key metabolic enzymes not only regulate Glucose, lipid, amino acid metabolism to serve the cellular energy needs, but also modulate noncanonical or nonmetabolic signaling pathway such as gene expression, cell-cycle progression, DNA repair, apoptosis and cell proliferation in regulating the pathologic progression of disease. However, the role of glycometabolism in peripheral nerve axon regeneration is little known. In this study, we investigated the expression of Pyruvate dehydrogenase E1(PDH), a key enzyme linking glycolysis and the tricarboxylic acid (TCA) cycle, with qRT-PCR and found that pyruvate dehydrogenase beta subunit (Pdhb) is up-regulated at the early stage during peripheral nerve injury. The knockdown of Pdhb inhibits neurite outgrowth of primary DRG neurons in vitro and restrains axon regeneration of sciatic nerve after crush injury. Pdhb overexpression promoting axonal regeneration is reversed by knockdown of Monocarboxylate transporter 2(Mct2), a transporter involved in the transport and metabolism of lactate, indicating Pdhb promoting axon regeneration depends on lactate for energy supply. Given the nucleus-localization of Pdhb, further analysis revealed that Pdhb enhances the acetylation of H3K9 and affecting the expression of genes involved in arachidonic acid metabolism and Ras signaling pathway, such as Rsa-14-44 and Pla2g4a, thereby promoting axon regeneration. Collectively, our data indicates that Pdhb is a positive dual modulator of energy generation and gene expression in regulating peripheral axon regeneration.
Collapse
Affiliation(s)
- Chunyi Jiang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Affiliated hospital and Medical School, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China
| | - Yan Lu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Affiliated hospital and Medical School, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China; Clinical Laboratory, Nantong Third Hospital Affiliated to Nantong University, Nantong 226001, China
| | - Ran Zhu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Affiliated hospital and Medical School, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China
| | - Ying Zong
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Affiliated hospital and Medical School, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China
| | - Yuchen Huang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Affiliated hospital and Medical School, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China
| | - Dong Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Affiliated hospital and Medical School, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China
| | - Zhanyun Da
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Affiliated hospital and Medical School, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China
| | - Bin Yu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Affiliated hospital and Medical School, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China
| | - Longxiang Shen
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China.
| | - Qianqian Cao
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Affiliated hospital and Medical School, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China.
| |
Collapse
|
|
4
|
Yin H, Zhou C, Shi S, Fang L, Liu J, Sun D, Jiang L, Zhang S. Weighted Single-Step Genome-Wide Association Study of Semen Traits in Holstein Bulls of China. Front Genet 2019; 10:1053. [PMID: 31749837 PMCID: PMC6842931 DOI: 10.3389/fgene.2019.01053] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 10/01/2019] [Indexed: 12/31/2022] Open
Abstract
Efficient production of high-quality semen is a crucial trait in the dairy cattle breeding due to the widespread use of artificial insemination. However, the genetic architecture (e.g., distributions of causal variants and their corresponding effects) underlying such semen quality traits remains unclear. In this study, we performed genome-wide association studies to identify genes associated with five semen quality traits in Chinese Holstein population, including ejaculate volume, progressive sperm motility, sperm concentration, number of sperm, and number of progressive motile sperm. Our dataset consisted of 2,218 Holstein bulls in China with full pedigree information, representing 12 artificial insemination centers, with 1,508 genotyped using the Illumina BovineSNP50 BeadChip. We used a weighted single-step genome-wide association method with 10 adjacent Single nucleotide polymorphisms (SNPs) as sliding windows, which can make use of individuals without genotypes. We considered the top 10 genomic regions in terms of their explained genomic variants as candidate window regions for each trait. In total, we detected 36 window regions related to one or multiple semen traits across 19 chromosomes. Promising candidate genes of PSMB5, PRMT5, ACTB, PDE3A, NPC1, FSCN1, NR5A2, IQCG, LHX8, and DMRT1 were identified in these window regions for these five semen traits. Our findings provided a solid basis for further research into genetic mechanisms underlying semen quality traits, which may contribute to their accurate genomic prediction in Chinese Holstein population.
Collapse
Affiliation(s)
- Hongwei Yin
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding, and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Chenghao Zhou
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding, and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Shaolei Shi
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding, and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Lingzhao Fang
- Department of Animal and Avian Sciences, University of Maryland, College Park, College Park, MD, United States
| | - Jianfeng Liu
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding, and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Dongxiao Sun
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding, and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Li Jiang
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding, and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Shengli Zhang
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding, and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
| |
Collapse
|
|
5
|
Li B, Fu J, Chen P, Ge X, Li Y, Kuiatse I, Wang H, Wang H, Zhang X, Orlowski RZ. The Nuclear Factor (Erythroid-derived 2)-like 2 and Proteasome Maturation Protein Axis Mediate Bortezomib Resistance in Multiple Myeloma. J Biol Chem 2015; 290:29854-68. [PMID: 26483548 DOI: 10.1074/jbc.m115.664953] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Indexed: 11/06/2022] Open
Abstract
Resistance to the proteasome inhibitor bortezomib is an emerging clinical problem whose mechanisms have not been fully elucidated. We considered the possibility that this could be associated with enhanced proteasome activity in part through the action of the proteasome maturation protein (POMP). Bortezomib-resistant myeloma models were used to examine the correlation between POMP expression and bortezomib sensitivity. POMP expression was then modulated using genetic and pharmacologic approaches to determine the effects on proteasome inhibitor sensitivity in cell lines and in vivo models. Resistant cell lines were found to overexpress POMP, and while its suppression in cell lines enhanced bortezomib sensitivity, POMP overexpression in drug-naive cells conferred resistance. Overexpression of POMP was associated with increased levels of nuclear factor (erythroid-derived 2)-like (NRF2), and NRF2 was found to bind to and activate the POMP promoter. Knockdown of NRF2 in bortezomib-resistant cells reduced POMP levels and proteasome activity, whereas its overexpression in drug-naive cells increased POMP and proteasome activity. The NRF2 inhibitor all-trans-retinoic acid reduced cellular NRF2 levels and increased the anti-proliferative and pro-apoptotic activities of bortezomib in resistant cells, while decreasing proteasome capacity. Finally, the combination of all-trans-retinoic acid with bortezomib showed enhanced activity against primary patient samples and in a murine model of bortezomib-resistant myeloma. Taken together, these studies validate a role for the NRF2/POMP axis in bortezomib resistance and identify NRF2 and POMP as potentially attractive targets for chemosensitization to this proteasome inhibitor.
Collapse
Affiliation(s)
- Bingzong Li
- From the Department of Hematology, Second Affiliated Hospital of Soochow University, Suzhou 215006, Jiangsu, China and the Departments of Lymphoma and Myeloma and
| | - Jinxiang Fu
- From the Department of Hematology, Second Affiliated Hospital of Soochow University, Suzhou 215006, Jiangsu, China and
| | - Ping Chen
- From the Department of Hematology, Second Affiliated Hospital of Soochow University, Suzhou 215006, Jiangsu, China and
| | - Xueping Ge
- From the Department of Hematology, Second Affiliated Hospital of Soochow University, Suzhou 215006, Jiangsu, China and
| | - Yali Li
- From the Department of Hematology, Second Affiliated Hospital of Soochow University, Suzhou 215006, Jiangsu, China and
| | | | - Hua Wang
- the Departments of Lymphoma and Myeloma and
| | | | | | - Robert Z Orlowski
- the Departments of Lymphoma and Myeloma and Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030
| |
Collapse
|
|
6
|
Wang HL, Fan SS, Pang M, Liu YH, Guo M, Liang JB, Zhang JL, Yu BF, Guo R, Xie J, Zheng GP. The Ankyrin Repeat Domain 49 (ANKRD49) Augments Autophagy of Serum-Starved GC-1 Cells through the NF-κB Pathway. PLoS One 2015; 10:e0128551. [PMID: 26043108 PMCID: PMC4455995 DOI: 10.1371/journal.pone.0128551] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Accepted: 04/28/2015] [Indexed: 11/18/2022] Open
Abstract
The ankyrin repeat domain 49 (ANKRD49) is an evolutionarily conserved protein highly expressed in testes. However, the function of ANKRD49 in spermatogenesis is unknown. In this study, we found that ANKRD49 resides primarily in nucleus of spermatogonia, spermatocytes and round spermatids. ANKRD49 overexpression augments starvation-induced autophagy in male germ GC-1 cells whereas shRNA knockdown of ANKRD49 attenuates the autophagy. Inhibition of NF-κB pathway by its inhibitors or p65 siRNA prevents the ANKRD49-dependent autophagy augmentation, demonstrating that ANKRD49 enhances autophagy via NF-κB pathway. Our findings suggest that ANKRD49 plays an important role in spermatogenesis via promotion of autophagy-dependent survival.
Collapse
Affiliation(s)
- Hai-long Wang
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi, 030001, PR China
| | - Sha-sha Fan
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi, 030001, PR China
| | - Min Pang
- Department of Respiratory, the First Affiliated Hospital, Shanxi Medical University, Taiyuan, Shanxi, 030001, PR China
| | - Yi-heng Liu
- Class 041002, Department of Anestesioloy, Shanxi Medical University, Taiyuan, Shanxi, 030001, PR China
| | - Min Guo
- Center of Laboratory Animal, Shanxi Medical University, Taiyuan, Shanxi, 030001, PR China
| | - Jun-bo Liang
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Tsinghua University, 5 Dong Dan San Tiao, Beijing, 100005, China
| | - Jian-lin Zhang
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi, 030001, PR China
| | - Bao-feng Yu
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi, 030001, PR China
| | - Rui Guo
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi, 030001, PR China
- * E-mail: (RG); (JX); (GPZ)
| | - Jun Xie
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi, 030001, PR China
- * E-mail: (RG); (JX); (GPZ)
| | - Guo-ping Zheng
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi, 030001, PR China
- * E-mail: (RG); (JX); (GPZ)
| |
Collapse
|
|
7
|
Cheng X, Wan Y, Xu Y, Zhou Q, Wang Y, Zhu H. Melatonin alleviates myosin light chain kinase expression and activity via the mitogen-activated protein kinase pathway during atherosclerosis in rabbits. Mol Med Rep 2014; 11:99-104. [PMID: 25339116 PMCID: PMC4237093 DOI: 10.3892/mmr.2014.2753] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Accepted: 09/12/2014] [Indexed: 01/14/2023] Open
Abstract
Melatonin (MLT) is an endogenous indole compound with numerous biological activities that has been associated with atherosclerosis (AS). In the present study, rabbits were used as an AS model in order to investigate whether MLT affects endothelial cell permeability, myosin light chain kinase (MLCK) activity and MLCK expression via the mitogen-activated protein kinase (MAPK) pathway. Expression and activity of MLCK were measured using western blot analysis, quantitative polymerase chain reaction, immunohistochemistry and γ-32P-adenosine triphosphate incorporation. Endothelial permeability was detected using rhodamine phalloidin fluorescence staining. The phosphorylation of extracellular regulated protein kinase (ERK), c-Jun N-terminal kinase (JNK) and p38 in endothelial cells were also analyzed using western blot analysis. Atheromatous plaques were formed in rabbits with a high cholesterol diet; however, following treatment with MLT, the number and areas of atheromatous plaques were significantly reduced. In addition, MLT treatment reversed the increase of MLCK activity and expression that occurred in rabbits with high cholesterol intake. Furthermore, levels of phosphorylated ERK, JNK and p38 decreased following MLT treatment. In conclusion, the results of the present study indicated that AS may be associated with increased MLCK expression and activity, which was reduced following treatment with MLT. The mechanism of action of MLT was thought to proceed via modulating MAPK pathway signal transduction; however, further studies are required in order to fully elucidate the exact regulatory mechanisms involved.
Collapse
Affiliation(s)
- Xiaowen Cheng
- Laboratory of Molecular Biology and Department of Biochemistry, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Yufeng Wan
- Department of Otolaryngology, The Affiliated Chaohu Hospital of Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Yuanhong Xu
- Department of Clinical Laboratory, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Qing Zhou
- Laboratory of Molecular Biology and Department of Biochemistry, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Yuan Wang
- Laboratory of Molecular Biology and Department of Biochemistry, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Huaqing Zhu
- Laboratory of Molecular Biology and Department of Biochemistry, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| |
Collapse
|
|
8
|
Gómez O, Ballester-Lurbe B, Guasch RM, Pérez-Roger I, García-Roselló E, Terrado J. Analysis of RhoE expression in the testis, epididymis and ductus deferens, and the effects of its deficiency in mice. J Anat 2014; 225:583-90. [PMID: 25270035 DOI: 10.1111/joa.12241] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/02/2014] [Indexed: 12/12/2022] Open
Abstract
Rho proteins are a large family of GTPases involved in the control of actin cytoskeleton dynamics, proliferation and survival. Rnd1, Rnd2 and RhoE/Rnd3 form a subfamily of Rho proteins characterized by being constitutively active. The role of these proteins has been studied during the last years in several systems; however, little is known about their expression and functions in the reproductive organs. In this work we analysed the localization and the effect of RhoE deficiency in the testes using mice lacking RhoE expression (RhoE gt/gt), and our research shows some unexpected and relevant results. First, we have observed that RhoE is only expressed in Leydig cells within the testicular parenchyma and it is absent of seminiferous tubules. In addition, RhoE is expressed in the excurrent ducts of the testis, including the ductuli efferentes, epididymis and ductus deferens. Moreover, the testes of postnatal 15-day-old RhoE null mice are smaller, both in absolute values and in relation to the body weight. Furthermore, the dimensions of their seminiferous tubules are also reduced compared with wild-types. In order to study the role of RhoE in the adult, we analysed heterozygous animals as RhoE null mice die early postnatally. Our results show that the testes of adult RhoE heterozygous mice are also smaller than those of the wild-types, with a 17% decrease in the ratio testis weight/body weight. In addition, their seminiferous tubules have reduced tubular diameter (12%) and a thinner epithelial wall (33%) that appears disorganized and with a swollen lumen. Finally, and probably as a consequence of those alterations, the sperm concentration of heterozygous animals was found to be lower than in the wild-types. These results indicate that accurate levels of RhoE in the testes are necessary for a correct development and function of male gonads, and suggest novel and unexpected roles of Rnd GTPases in the reproductive physiology.
Collapse
Affiliation(s)
- Olga Gómez
- Departamento de Medicina y Cirugía Animal, Facultad de Veterinaria, Universidad CEU Cardenal Herrera, Alfara del Patriarca, Valencia, Spain
| | | | | | | | | | | |
Collapse
|
|
9
|
Cheng X, Liang J, Teng Y, Fu J, Miao S, Zong S, Wang L. Nemo-like kinase promotes etoposide-induced apoptosis of male germ cell-derived GC-1 cells in vitro. FEBS Lett 2012; 586:1497-503. [DOI: 10.1016/j.febslet.2012.04.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2012] [Revised: 03/27/2012] [Accepted: 04/03/2012] [Indexed: 01/30/2023]
|
|
10
|
Abstract
In 1985, the first members of the Rho GTPase family were identified. Over the next 10 years, rapid progress was made in understanding Rho GTPase signalling. Multiple Rho GTPases were discovered in a wide range of eukaryotes, and shown to regulate a diverse range of cellular processes, including cytoskeletal dynamics, NADPH oxidase activation, cell migration, cell polarity, membrane trafficking, and transcription. The Rho regulators, guanine nucleotide exchange factors (GEFs), GTPase-activating proteins (GAPs), and guanine nucleotide dissociation inhibitors (GDIs), were found through a combination of biochemistry, genetics, and detective work. Downstream targets for Rho GTPases were also rapidly identified, and linked to Rho-regulated cellular responses. In parallel, a wide range of bacterial proteins were found to modify Rho proteins or alter their activity in cells, many of which turned out to be useful tools to study Rho functions. More recent work has delineated where Rho GTPases act in cells, the molecular pathways linking some of them to specific cellular responses, and their functions in the development of multicellular organisms.
Collapse
Affiliation(s)
- Anne J Ridley
- Randall Division of Cell and Molecular Biophysics, King's College London, London, UK.
| |
Collapse
|