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Gong C, Chang L, Huang R, Sun X, Liu Y, Wu S, Wang L, Xu B, Wang L. LIM kinase 2 activates cardiac fibroblasts and exacerbates postinfarction left ventricular remodeling via crosstalk between the canonical and non-canonical Wnt pathways. Pharmacol Res 2024; 208:107347. [PMID: 39153710 DOI: 10.1016/j.phrs.2024.107347] [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: 04/16/2024] [Revised: 07/20/2024] [Accepted: 08/07/2024] [Indexed: 08/19/2024]
Abstract
Ischemic heart failure rates rise despite decreased acute myocardial infarction (MI) mortality. Excessive myofibroblast activation post-MI leads to adverse remodeling. LIM kinases (LIMK1 and LIMK2) regulate cytoskeleton homeostasis and are pro-fibrotic markers in atrial fibrillation. However, their roles and mechanisms in postinfarction fibrosis and ventricular remodeling remain unclear. This study found that the expression of LIMKs elevated in the border zone (BZ) in mice MI models. LIMK1/2 double knockout (DKO) restrained pathological remodeling and reduced mortality by suppressing myofibroblast activation. By using adeno-associated virus (AAV) with a periostin promoter to overexpress LIMK1 or LIMK2, this study found that myofibroblast-specific LIMK2 overexpression diminished these effects in DKO mice, while LIMK1 did not. LIMK2 kinase activity was critical for myofibroblast proliferation by using AAV overexpressing mutant LIMK2 lack of kinase activity. According to phosphoproteome analysis, functional rescue experiments, co-immunoprecipitation, and protein-protein docking, LIMK2 led to the phosphorylation of β-catenin at Ser 552. LIMK2 nuclear translocation also played a role in myofibroblast proliferation after MI with the help of AAV overexpressing mutant LIMK2 without nuclear location signal. Chromatin immunoprecipitation sequencing identified that LIMK2 bound to Lrp6 promoter region in TGF-β treated cardiac fibroblasts, positively regulating Wnt signaling via Wnt receptor internalization. This study demonstrated that LIMK2 promoted myofibroblast proliferation and adverse cardiac remodeling after MI, by enhancing phospho-β-catenin (Ser552) and Lrp6 signaling. This suggested that LIMK2 could be a target for the treatment of postinfarction injury.
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Affiliation(s)
- Chenyi Gong
- Department of Cardiology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, the Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing 210008, China; Department of Cardiology, the Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou 215002, China
| | - Lei Chang
- Department of Cardiology, Nanjing Drum Tower Hospital, Clinical College of Nanjing Medical University, Nanjing, Jiangsu 210008, China; Department of Cardiology, Dushu Lake Hospital Affiliated to Soochow University, Medical Center of Soochow University, Suzhou Dushu Lake Hospital, Suzhou 215000, China
| | - Rong Huang
- Department of Cardiology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, the Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing 210008, China
| | - Xuan Sun
- Department of Cardiology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, the Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing 210008, China
| | - Yihai Liu
- Department of Cardiology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, the Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing 210008, China
| | - Shaojun Wu
- Department of Cardiology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, the Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing 210008, China
| | - Lintao Wang
- Department of Cardiology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, the Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing 210008, China
| | - Biao Xu
- Department of Cardiology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, the Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing 210008, China; Department of Cardiology, Nanjing Drum Tower Hospital, Clinical College of Nanjing Medical University, Nanjing, Jiangsu 210008, China.
| | - Lian Wang
- Department of Cardiology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, the Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing 210008, China; Department of Cardiology, Nanjing Drum Tower Hospital, Clinical College of Nanjing Medical University, Nanjing, Jiangsu 210008, China.
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Srivastava Y, Donta M, Mireles LL, Paulucci-Holthauzen A, Shi L, Bedford MT, Waxham MN, McCrea PD. Exploring the PDZ, DUF, and LIM Domains of Pdlim5 in Dendrite Branching. Int J Mol Sci 2024; 25:8326. [PMID: 39125895 PMCID: PMC11312917 DOI: 10.3390/ijms25158326] [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: 05/18/2024] [Revised: 07/10/2024] [Accepted: 07/25/2024] [Indexed: 08/12/2024] Open
Abstract
The branched architecture of neuronal dendrites is a key factor in how neurons form ordered networks and discoveries continue to be made identifying proteins and protein-protein interactions that direct or execute the branching and extension of dendrites. Our prior work showed that the molecular scaffold Pdlim5 and delta-catenin, in conjunction, are two proteins that help regulate the branching and elongation of dendrites in cultured hippocampal neurons and do so through a phosphorylation-dependent mechanism triggered by upstream glutamate signaling. In this report we have focused on Pdlim5's multiple scaffolding domains and how each contributes to dendrite branching. The three identified regions within Pdlim5 are the PDZ, DUF, and a trio of LIM domains; however, unresolved is the intra-molecular conformation of Pdlim5 as well as which domains are essential to regulate dendritic branching. We address Pdlim5's structure and function by examining the role of each of the domains individually and using deletion mutants in the context of the full-length protein. Results using primary hippocampal neurons reveal that the Pdlim5 DUF domain plays a dominant role in increasing dendritic branching. Neither the PDZ domain nor the LIM domains alone support increased branching. The central role of the DUF domain was confirmed using deletion mutants in the context of full-length Pdlim5. Guided by molecular modeling, additional domain mapping studies showed that the C-terminal LIM domain forms a stable interaction with the N-terminal PDZ domain, and we identified key amino acid residues at the interface of each domain that are needed for this interaction. We posit that the central DUF domain of Pdlim5 may be subject to modulation in the context of the full-length protein by the intra-molecular interaction between the N-terminal PDZ and C-terminal LIM domains. Overall, our studies reveal a novel mechanism for the regulation of Pdlim5's function in the regulation of neuronal branching and highlight the critical role of the DUF domain in mediating these effects.
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Affiliation(s)
- Yogesh Srivastava
- Department of Genetics, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Maxsam Donta
- Department of Genetics, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- Program in Genetics & Epigenetics, University of Texas MD Anderson Cancer Center, UT Health GSBS, Houston, TX 77030, USA
| | - Lydia L. Mireles
- Department of Neurobiology & Anatomy, University of Texas MD Anderson Cancer Center, UT Health GSBS, Houston, TX 77030, USA
| | | | - Leilei Shi
- Department of Epigenetics & Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Mark T. Bedford
- Program in Genetics & Epigenetics, University of Texas MD Anderson Cancer Center, UT Health GSBS, Houston, TX 77030, USA
- Department of Epigenetics & Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - M. Neal Waxham
- Department of Neurobiology & Anatomy, University of Texas MD Anderson Cancer Center, UT Health GSBS, Houston, TX 77030, USA
- Program in Neuroscience, University of Texas MD Anderson Cancer Center, UT Health GSBS, Houston, TX 77030, USA
| | - Pierre D. McCrea
- Department of Genetics, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- Program in Genetics & Epigenetics, University of Texas MD Anderson Cancer Center, UT Health GSBS, Houston, TX 77030, USA
- Program in Neuroscience, University of Texas MD Anderson Cancer Center, UT Health GSBS, Houston, TX 77030, USA
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3
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Chong ZX, Ho WY, Yeap SK. Decoding the tumour-modulatory roles of LIMK2. Life Sci 2024; 347:122609. [PMID: 38580197 DOI: 10.1016/j.lfs.2024.122609] [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: 12/13/2023] [Revised: 03/19/2024] [Accepted: 04/01/2024] [Indexed: 04/07/2024]
Abstract
LIM domains kinase 2 (LIMK2) is a 72 kDa protein that regulates actin and cytoskeleton reorganization. Once phosphorylated by its upstream activator (ROCK1), LIMK2 can phosphorylate cofilin to inactivate it. This relieves the levering stress on actin and allows polymerization to occur. Actin rearrangement is essential in regulating cell cycle progression, apoptosis, and migration. Dysregulation of the ROCK1/LIMK2/cofilin pathway has been reported to link to the development of various solid cancers such as breast, lung, and prostate cancer and liquid cancer like leukemia. This review aims to assess the findings from multiple reported in vitro, in vivo, and clinical studies on the potential tumour-regulatory role of LIMK2 in different human cancers. The findings of the selected literature unraveled that activated AKT, EGF, and TGF-β pathways can upregulate the activities of the ROCK1/LIMK2/cofilin pathway. Besides cofilin, LIMK2 can modulate the cellular levels of other proteins, such as TPPP1, to promote microtubule polymerization. The tumour suppressor protein p53 can transactivate LIMK2b, a splice variant of LIMK2, to induce cell cycle arrest and allow DNA repair to occur before the cell enters the next phase of the cell cycle. Additionally, several non-coding RNAs, such as miR-135a and miR-939-5p, could also epigenetically regulate the expression of LIMK2. Since the expression of LIMK2 is dysregulated in several human cancers, measuring the tissue expression of LIMK2 could potentially help diagnose cancer and predict patient prognosis. As LIMK2 could play tumour-promoting and tumour-inhibiting roles in cancer development, more investigation should be conducted to carefully evaluate whether introducing a LIMK2 inhibitor in cancer patients could slow cancer progression without posing clinical harms.
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Affiliation(s)
- Zhi Xiong Chong
- Faculty of Science and Engineering, University of Nottingham Malaysia, 43500 Semenyih, Selangor, Malaysia.
| | - Wan Yong Ho
- Faculty of Science and Engineering, University of Nottingham Malaysia, 43500 Semenyih, Selangor, Malaysia.
| | - Swee Keong Yeap
- China-ASEAN College of Marine Sciences, Xiamen University Malaysia, 43900 Sepang, Selangor, Malaysia.
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Wang W, Asiru, Luo G, Chen Y, Cui Y, Ping S, Chen Y. A Novel Effect of Id2 in Microglia TNFα Regulation. Mol Neurobiol 2024:10.1007/s12035-024-04278-2. [PMID: 38850351 DOI: 10.1007/s12035-024-04278-2] [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: 03/07/2024] [Accepted: 06/01/2024] [Indexed: 06/10/2024]
Abstract
Microglia are the most important immune cells in the central nervous system (CNS), which can defend against external pathogens and stimuli. Dysregulation of microglia releases excessive proinflammatory cytokines and leads to neuroinflammation, which is fundamental to the pathophysiology of multiple neurological diseases. However, the molecular mechanisms underlying the regulation of proinflammatory cytokines in microglia are still not well-understood. Here, we identified that inhibitor of DNA binding protein 2 (Id2) was a negative regulator of tumor necrosis factor-α (TNFα) in cultured microglia. Knockdown of Id2 significantly increased the expression of TNFα in microglia, while overexpression of Id2 inhibited TNFα expression. Furthermore, by interacting with the p65 subunit of nuclear factor kappa-B (NF-κB), Id2 suppressed the transcription activation of NF-κB and inhibited TNFα expression. Interestingly, in lipopolysaccharides (LPS)-treated microglia, Id2 increased and underwent a cytoplasmic relocation. Immunoprecipitation and immunostaining results showed that by binding to the LIM domain of Id2, a scaffold protein PDZ and LIM 5 (PDLIM5) involved in the Id2 cytoplasmic relocation, which inactivated Id2 and resulted in higher TNFα expression in LPS-treated microglia. Collectively, our data delineate a novel effect of Id2 on TNFα regulation in microglia, which may shed a light on the proinflammatory cytokines regulating in microglia associated neuroimmune disorders.
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Affiliation(s)
- Wenhui Wang
- Neurobiology Research Center, School of Medicine, Shenzhen Campus of Sun Yat-Sen University, No. 66, Gongchang Road, Guangming District, Shenzhen, Guangdong, 518107, People's Republic of China
| | - Asiru
- Neurobiology Research Center, School of Medicine, Shenzhen Campus of Sun Yat-Sen University, No. 66, Gongchang Road, Guangming District, Shenzhen, Guangdong, 518107, People's Republic of China
| | - Guoya Luo
- Neurobiology Research Center, School of Medicine, Shenzhen Campus of Sun Yat-Sen University, No. 66, Gongchang Road, Guangming District, Shenzhen, Guangdong, 518107, People's Republic of China
| | - Yanmei Chen
- Neurobiology Research Center, School of Medicine, Shenzhen Campus of Sun Yat-Sen University, No. 66, Gongchang Road, Guangming District, Shenzhen, Guangdong, 518107, People's Republic of China
| | - Yu Cui
- Neurobiology Research Center, School of Medicine, Shenzhen Campus of Sun Yat-Sen University, No. 66, Gongchang Road, Guangming District, Shenzhen, Guangdong, 518107, People's Republic of China
| | - Suning Ping
- Neurobiology Research Center, School of Medicine, Shenzhen Campus of Sun Yat-Sen University, No. 66, Gongchang Road, Guangming District, Shenzhen, Guangdong, 518107, People's Republic of China.
- Department of Histology and Embryology, School of Medicine, Shenzhen Campus of Sun Yat-Sen University, No. 66, Gongchang Road, Guangming District, Shenzhen, Guangdong, 518107, People's Republic of China.
| | - Yuan Chen
- Neurobiology Research Center, School of Medicine, Shenzhen Campus of Sun Yat-Sen University, No. 66, Gongchang Road, Guangming District, Shenzhen, Guangdong, 518107, People's Republic of China.
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5
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Verble KM, Keaveny EC, Rahman SR, Jenny MJ, Dillon ME, Lozier JD. A rapid return to normal: temporal gene expression patterns following cold exposure in the bumble bee Bombus impatiens. J Exp Biol 2024; 227:jeb247040. [PMID: 38629177 DOI: 10.1242/jeb.247040] [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: 11/16/2023] [Accepted: 04/02/2024] [Indexed: 05/01/2024]
Abstract
Bumble bees are common in cooler climates and many species likely experience periodic exposure to very cold temperatures, but little is known about the temporal dynamics of cold response mechanisms following chill exposure, especially how persistent effects of cold exposure may facilitate tolerance of future events. To investigate molecular processes involved in the temporal response by bumble bees to acute cold exposure, we compared mRNA transcript abundance in Bombus impatiens workers exposed to 0°C for 75 min (inducing chill coma) and control bees maintained at a constant ambient temperature (28°C). We sequenced the 3' end of mRNA transcripts (TagSeq) to quantify gene expression in thoracic tissue of bees at several time points (0, 10, 30, 120 and 720 min) following cold exposure. Significant differences from control bees were only detectable within 30 min after the treatment, with most occurring at the 10 min recovery time point. Genes associated with gluconeogenesis and glycolysis were most notably upregulated, while genes related to lipid and purine metabolism were downregulated. The observed patterns of expression indicate a rapid recovery after chill coma, suggesting an acute differential transcriptional response during recovery from chill coma and return to baseline expression levels within an hour, with no long-term gene expression markers of this cold exposure. Our work highlights the functions and pathways important for acute cold recovery, provides an estimated time frame for recovery from cold exposure in bumble bees, and suggests that cold hardening may be less important for these heterothermic insects.
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Affiliation(s)
- Kelton M Verble
- Department of Biological Sciences, The University of Alabama, Tuscaloosa, AL 35487, USA
| | - Ellen C Keaveny
- Department of Zoology & Physiology and Program in Ecology and Evolution, University of Wyoming, Laramie, WY 82072, USA
| | | | - Matthew J Jenny
- Department of Biological Sciences, The University of Alabama, Tuscaloosa, AL 35487, USA
| | - Michael E Dillon
- Department of Zoology & Physiology and Program in Ecology and Evolution, University of Wyoming, Laramie, WY 82072, USA
| | - Jeffrey D Lozier
- Department of Biological Sciences, The University of Alabama, Tuscaloosa, AL 35487, USA
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6
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Chen G, Chen J, Qi L, Yin Y, Lin Z, Wen H, Zhang S, Xiao C, Bello SF, Zhang X, Nie Q, Luo W. Bulk and single-cell alternative splicing analyses reveal roles of TRA2B in myogenic differentiation. Cell Prolif 2024; 57:e13545. [PMID: 37705195 PMCID: PMC10849790 DOI: 10.1111/cpr.13545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 08/08/2023] [Accepted: 08/28/2023] [Indexed: 09/15/2023] Open
Abstract
Alternative splicing (AS) disruption has been linked to disorders of muscle development, as well as muscular atrophy. However, the precise changes in AS patterns that occur during myogenesis are not well understood. Here, we employed isoform long-reads RNA-seq (Iso-seq) and single-cell RNA-seq (scRNA-seq) to investigate the AS landscape during myogenesis. Our Iso-seq data identified 61,146 full-length isoforms representing 11,682 expressed genes, of which over 52% were novel. We identified 38,022 AS events, with most of these events altering coding sequences and exhibiting stage-specific splicing patterns. We identified AS dynamics in different types of muscle cells through scRNA-seq analysis, revealing genes essential for the contractile muscle system and cytoskeleton that undergo differential splicing across cell types. Gene-splicing analysis demonstrated that AS acts as a regulator, independent of changes in overall gene expression. Two isoforms of splicing factor TRA2B play distinct roles in myogenic differentiation by triggering AS of TGFBR2 to regulate canonical TGF-β signalling cascades differently. Our study provides a valuable transcriptome resource for myogenesis and reveals the complexity of AS and its regulation during myogenesis.
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Affiliation(s)
- Genghua Chen
- College of Animal ScienceSouth China Agricultural UniversityGuangzhouGuangdongChina
- Guangdong Provincial Key Lab of Agro‐Animal Genomics and Molecular Breeding, Lingnan Guangdong Laboratory of Modern Agriculture & State Key Laboratory for Conservation and Utilization of Subtropical Agro‐Bioresources, Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry of AgricultureGuangzhouGuangdongChina
- State Key Laboratory of Livestock and Poultry Breeding, and Lingnan Guangdong Laboratory of AgricultureSouth China Agricultural UniversityGuangzhouChina
| | - Jiahui Chen
- College of Animal ScienceSouth China Agricultural UniversityGuangzhouGuangdongChina
- Guangdong Provincial Key Lab of Agro‐Animal Genomics and Molecular Breeding, Lingnan Guangdong Laboratory of Modern Agriculture & State Key Laboratory for Conservation and Utilization of Subtropical Agro‐Bioresources, Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry of AgricultureGuangzhouGuangdongChina
- State Key Laboratory of Livestock and Poultry Breeding, and Lingnan Guangdong Laboratory of AgricultureSouth China Agricultural UniversityGuangzhouChina
| | - Lin Qi
- College of Animal ScienceSouth China Agricultural UniversityGuangzhouGuangdongChina
- Guangdong Provincial Key Lab of Agro‐Animal Genomics and Molecular Breeding, Lingnan Guangdong Laboratory of Modern Agriculture & State Key Laboratory for Conservation and Utilization of Subtropical Agro‐Bioresources, Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry of AgricultureGuangzhouGuangdongChina
- State Key Laboratory of Livestock and Poultry Breeding, and Lingnan Guangdong Laboratory of AgricultureSouth China Agricultural UniversityGuangzhouChina
| | - Yunqian Yin
- College of Animal ScienceSouth China Agricultural UniversityGuangzhouGuangdongChina
- Guangdong Provincial Key Lab of Agro‐Animal Genomics and Molecular Breeding, Lingnan Guangdong Laboratory of Modern Agriculture & State Key Laboratory for Conservation and Utilization of Subtropical Agro‐Bioresources, Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry of AgricultureGuangzhouGuangdongChina
- State Key Laboratory of Livestock and Poultry Breeding, and Lingnan Guangdong Laboratory of AgricultureSouth China Agricultural UniversityGuangzhouChina
| | - Zetong Lin
- College of Animal ScienceSouth China Agricultural UniversityGuangzhouGuangdongChina
- Guangdong Provincial Key Lab of Agro‐Animal Genomics and Molecular Breeding, Lingnan Guangdong Laboratory of Modern Agriculture & State Key Laboratory for Conservation and Utilization of Subtropical Agro‐Bioresources, Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry of AgricultureGuangzhouGuangdongChina
- State Key Laboratory of Livestock and Poultry Breeding, and Lingnan Guangdong Laboratory of AgricultureSouth China Agricultural UniversityGuangzhouChina
| | - Huaqiang Wen
- College of Animal ScienceSouth China Agricultural UniversityGuangzhouGuangdongChina
- Guangdong Provincial Key Lab of Agro‐Animal Genomics and Molecular Breeding, Lingnan Guangdong Laboratory of Modern Agriculture & State Key Laboratory for Conservation and Utilization of Subtropical Agro‐Bioresources, Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry of AgricultureGuangzhouGuangdongChina
- State Key Laboratory of Livestock and Poultry Breeding, and Lingnan Guangdong Laboratory of AgricultureSouth China Agricultural UniversityGuangzhouChina
| | - Shuai Zhang
- College of Animal ScienceSouth China Agricultural UniversityGuangzhouGuangdongChina
- Guangdong Provincial Key Lab of Agro‐Animal Genomics and Molecular Breeding, Lingnan Guangdong Laboratory of Modern Agriculture & State Key Laboratory for Conservation and Utilization of Subtropical Agro‐Bioresources, Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry of AgricultureGuangzhouGuangdongChina
- State Key Laboratory of Livestock and Poultry Breeding, and Lingnan Guangdong Laboratory of AgricultureSouth China Agricultural UniversityGuangzhouChina
| | - Chuanyun Xiao
- Human and Animal PhysiologyWageningen UniversityWageningenThe Netherlands
| | - Semiu Folaniyi Bello
- College of Animal ScienceSouth China Agricultural UniversityGuangzhouGuangdongChina
- Guangdong Provincial Key Lab of Agro‐Animal Genomics and Molecular Breeding, Lingnan Guangdong Laboratory of Modern Agriculture & State Key Laboratory for Conservation and Utilization of Subtropical Agro‐Bioresources, Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry of AgricultureGuangzhouGuangdongChina
- State Key Laboratory of Livestock and Poultry Breeding, and Lingnan Guangdong Laboratory of AgricultureSouth China Agricultural UniversityGuangzhouChina
| | - Xiquan Zhang
- College of Animal ScienceSouth China Agricultural UniversityGuangzhouGuangdongChina
- Guangdong Provincial Key Lab of Agro‐Animal Genomics and Molecular Breeding, Lingnan Guangdong Laboratory of Modern Agriculture & State Key Laboratory for Conservation and Utilization of Subtropical Agro‐Bioresources, Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry of AgricultureGuangzhouGuangdongChina
- State Key Laboratory of Livestock and Poultry Breeding, and Lingnan Guangdong Laboratory of AgricultureSouth China Agricultural UniversityGuangzhouChina
| | - Qinghua Nie
- College of Animal ScienceSouth China Agricultural UniversityGuangzhouGuangdongChina
- Guangdong Provincial Key Lab of Agro‐Animal Genomics and Molecular Breeding, Lingnan Guangdong Laboratory of Modern Agriculture & State Key Laboratory for Conservation and Utilization of Subtropical Agro‐Bioresources, Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry of AgricultureGuangzhouGuangdongChina
- State Key Laboratory of Livestock and Poultry Breeding, and Lingnan Guangdong Laboratory of AgricultureSouth China Agricultural UniversityGuangzhouChina
| | - Wen Luo
- College of Animal ScienceSouth China Agricultural UniversityGuangzhouGuangdongChina
- Guangdong Provincial Key Lab of Agro‐Animal Genomics and Molecular Breeding, Lingnan Guangdong Laboratory of Modern Agriculture & State Key Laboratory for Conservation and Utilization of Subtropical Agro‐Bioresources, Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry of AgricultureGuangzhouGuangdongChina
- State Key Laboratory of Livestock and Poultry Breeding, and Lingnan Guangdong Laboratory of AgricultureSouth China Agricultural UniversityGuangzhouChina
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Lin C, Zeng M, Song J, Li H, Feng Z, Li K, Pei Y. PRRSV alters m 6A methylation and alternative splicing to regulate immune, extracellular matrix-associated function. Int J Biol Macromol 2023; 253:126741. [PMID: 37696370 DOI: 10.1016/j.ijbiomac.2023.126741] [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: 11/17/2022] [Revised: 08/07/2023] [Accepted: 08/25/2023] [Indexed: 09/13/2023]
Abstract
The alternative splicing and N6-methyladenosine (m6A) modifications occurring during porcine reproductive and respiratory syndrome virus (PRRSV) infections remain poorly understood. Transcriptome and MeRIP-seq analyses were performed to identify the gene expression changes, splicing and m6A modifications in the lungs of PRRSV-infected pigs. In total, 1624 differentially expressed genes (DEGs) were observed between PRRSV-infected and uninfected pigs. We observed significant alterations in alternative splicing (54,367 events) and m6A modifications (2265 DASEs) in numerous genes, including LMO7, SLC25A27, ZNF185, and ECM1, during PRRSV infection. LMO7 and ZNF185 exhibited alternative splicing variants and reduced mRNA expression levels following PRRSV infection. Notably, LMO7 inhibited c-JUN, SMAD3, and FAK expression, whereas ZNF185 affected the expression of FAK, CDH1, and GSK3β downstream. Additionally, ECM1 influenced FAK expression by targeting ITGB3 and AKT2, suggesting its involvement in extracellular matrix accumulation through the ITGB3-AKT2/FAK pathway. These changes may facilitate viral invasion and replication by modulating the expression of genes and proteins participating in crucial cellular processes associated with immunity and the extracellular matrix. We highlight the importance of these genes and their associated pathways in PRRSV infections and suggest that targeting these may be a promising therapeutic approach for treating viral infections.
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Affiliation(s)
- Chenghong Lin
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, Key Laboratory of Animal Molecular Design and Precise Breeding of Guangdong Higher Education Institutes, School of Life Science and Engineering, Foshan University, Foshan 528225, China
| | - Mu Zeng
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, Key Laboratory of Animal Molecular Design and Precise Breeding of Guangdong Higher Education Institutes, School of Life Science and Engineering, Foshan University, Foshan 528225, China
| | - Jia Song
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, Key Laboratory of Animal Molecular Design and Precise Breeding of Guangdong Higher Education Institutes, School of Life Science and Engineering, Foshan University, Foshan 528225, China
| | - Hua Li
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, Key Laboratory of Animal Molecular Design and Precise Breeding of Guangdong Higher Education Institutes, School of Life Science and Engineering, Foshan University, Foshan 528225, China
| | - Zheng Feng
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, Key Laboratory of Animal Molecular Design and Precise Breeding of Guangdong Higher Education Institutes, School of Life Science and Engineering, Foshan University, Foshan 528225, China
| | - Kui Li
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Key Laboratory of Livestock and Poultry Multi-omics of MARA, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518124, China.
| | - Yangli Pei
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, Key Laboratory of Animal Molecular Design and Precise Breeding of Guangdong Higher Education Institutes, School of Life Science and Engineering, Foshan University, Foshan 528225, China.
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8
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Jiang X, Xu Z, Jiang S, Wang H, Xiao M, Shi Y, Wang K. PDZ and LIM Domain-Encoding Genes: Their Role in Cancer Development. Cancers (Basel) 2023; 15:5042. [PMID: 37894409 PMCID: PMC10605254 DOI: 10.3390/cancers15205042] [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: 09/10/2023] [Revised: 10/13/2023] [Accepted: 10/15/2023] [Indexed: 10/29/2023] Open
Abstract
PDZ-LIM family proteins (PDLIMs) are a kind of scaffolding proteins that contain PDZ and LIM interaction domains. As protein-protein interacting molecules, PDZ and LIM domains function as scaffolds to bind to a variety of proteins. The PDLIMs are composed of evolutionarily conserved proteins found throughout different species. They can participate in cell signal transduction by mediating the interaction of signal molecules. They are involved in many important physiological processes, such as cell differentiation, proliferation, migration, and the maintenance of cellular structural integrity. Studies have shown that dysregulation of the PDLIMs leads to tumor formation and development. In this paper, we review and integrate the current knowledge on PDLIMs. The structure and function of the PDZ and LIM structural domains and the role of the PDLIMs in tumor development are described.
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Affiliation(s)
| | | | | | | | | | - Yueli Shi
- Department of Respiratory and Critical Care Medicine, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu 322000, China; (X.J.); (Z.X.); (S.J.); (H.W.); (M.X.)
| | - Kai Wang
- Department of Respiratory and Critical Care Medicine, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu 322000, China; (X.J.); (Z.X.); (S.J.); (H.W.); (M.X.)
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Zhang Y, Wang W, Duan C, Li M, Gao L. Novel Long Non-Coding RNA (lncRNA) Transcript AL137782.1 Promotes the Migration of Normal Lung Epithelial Cells through Positively Regulating LMO7. Int J Mol Sci 2023; 24:13904. [PMID: 37762205 PMCID: PMC10530982 DOI: 10.3390/ijms241813904] [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: 08/07/2023] [Revised: 09/04/2023] [Accepted: 09/06/2023] [Indexed: 09/29/2023] Open
Abstract
The role of long non-coding RNA (lncRNAs) in biological processes remains poorly understood, despite their significant impact. Our previous research discovered that the expression of AL137782.1, a long transcript of the novel lncRNA ENSG00000261553, is upregulated in lung epithelial cells upon exposure to microbes. Furthermore, the expression of AL137782.1 exhibits variability between para-cancerous and lung adenocarcinoma samples. These findings imply that this lncRNA may play a role in both normal lung epithelial cellular processes and pathophysiology. To elucidate the function of AL137782.1 in lung epithelial cells, we utilized bioinformatics retrieval and analysis to examine its expression. We then analyzed its subcellular localization using fluorescence in situ hybridization (FISH) and subcellular fractionation. Through rapid amplification of cDNA ends (RACE), we confirmed the presence of a 4401 nt lncRNA AL137782.1 in lung epithelial cells. Moreover, we discovered that this lncRNA positively regulates both mRNA and the protein expression of LMO7, a protein that may regulate the cell migration of normal lung epithelial cells. Although the overexpression of AL137782.1 has been shown to enhance the migration of both normal lung epithelial cells and lung adenocarcinoma cells in vitro, our study revealed that the expression of this lncRNA was significantly decreased in lung cancers compared to adjacent tissues. This suggests that the cell migration pattern regulated by the AL137782.1-LMO7 axis is more likely to occur in normal lung epithelial cells, rather than being a pathway that promotes lung cancer cell migration. Therefore, our study provides new insights into the mechanism underlying cell migration in human lung epithelial cells. This finding may offer a potential strategy to enhance normal lung epithelial cell migration after lung injury.
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Affiliation(s)
- Ying Zhang
- Life Science School, Ningxia University, Yinchuan 750001, China; (Y.Z.); (W.W.); (C.D.)
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western, Ningxia University, Yinchuan 750001, China
| | - Weili Wang
- Life Science School, Ningxia University, Yinchuan 750001, China; (Y.Z.); (W.W.); (C.D.)
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western, Ningxia University, Yinchuan 750001, China
| | - Chunchun Duan
- Life Science School, Ningxia University, Yinchuan 750001, China; (Y.Z.); (W.W.); (C.D.)
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western, Ningxia University, Yinchuan 750001, China
| | - Min Li
- Life Science School, Ningxia University, Yinchuan 750001, China; (Y.Z.); (W.W.); (C.D.)
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western, Ningxia University, Yinchuan 750001, China
| | - Liyang Gao
- Life Science School, Ningxia University, Yinchuan 750001, China; (Y.Z.); (W.W.); (C.D.)
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western, Ningxia University, Yinchuan 750001, China
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10
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Zhang J, Yang Y, Li X, Li G, Mizukami T, Liu Y, Wang Y, Xu G, Roder H, Zhang L, Yang ZJ. PDLIM3 supports hedgehog signaling in medulloblastoma by facilitating cilia formation. Cell Death Differ 2023; 30:1198-1210. [PMID: 36813922 PMCID: PMC10154305 DOI: 10.1038/s41418-023-01131-2] [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: 07/25/2022] [Revised: 02/01/2023] [Accepted: 02/09/2023] [Indexed: 02/24/2023] Open
Abstract
Elevated levels of PDLIM3 expression are frequently detected in sonic hedgehog (SHH) group of medulloblastoma (MB). However, the possible role of PDLIM3 in MB tumorigenesis is still unknown. Here, we found that PDLIM3 expression is necessary for hedgehog (Hh) pathway activation in MB cells. PDLIM3 is present in primary cilia of MB cells and fibroblasts, and such cilia localization is mediated by the PDZ domain of PDLIM3 protein. Deletion of PDLIM3 significantly compromised cilia formation and interfered the Hh signaling transduction in MB cells, suggesting that PDLIM3 promotes the Hh signaling through supporting the ciliogenesis. PDLIM3 protein physically interacts with cholesterol, a critical molecule for cilia formation and hedgehog signaling. The disruption of cilia formation and Hh signaling in PDLIM3 null MB cells or fibroblasts, was significantly rescued by treatment with exogenous cholesterol, demonstrating that PDLIM3 facilitates the ciliogenesis through cholesterol provision. Finally, deletion of PDLIM3 in MB cells significantly inhibited their proliferation and repressed tumor growth, suggesting that PDLIM3 is necessary for MB tumorigenesis. Our studies elucidate the critical functions of PDLIM3 in the ciliogenesis and Hh signaling transduction in SHH-MB cells, supporting to utilize PDLIM3 as a molecular marker for defining SHH group of MB in clinics.
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Affiliation(s)
- Jie Zhang
- Pediatric Cancer Center, College of Pharmaceutical Sciences, Soochow University, Suzhou, China
- College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Yijun Yang
- Cell Signaling and Epigenetics Program, Fox Chase Cancer Center, Temple University Health System, Philadelphia, PA, USA
- Cancer Epigenetics Institute, Fox Chase Cancer Center, Temple University Health System, Philadelphia, PA, USA
| | - Xinhua Li
- Pediatric Cancer Center, College of Pharmaceutical Sciences, Soochow University, Suzhou, China
- College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Gen Li
- Pediatric Cancer Center, College of Pharmaceutical Sciences, Soochow University, Suzhou, China
- College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Takuya Mizukami
- Molecular Therapeutic Program, Fox Chase Cancer Center, Temple University Health System, Philadelphia, PA, USA
| | - Yanli Liu
- College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Yuan Wang
- Pediatric Cancer Center, College of Pharmaceutical Sciences, Soochow University, Suzhou, China
- College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Guoqiang Xu
- College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Heinrich Roder
- Molecular Therapeutic Program, Fox Chase Cancer Center, Temple University Health System, Philadelphia, PA, USA
| | - Li Zhang
- Pediatric Cancer Center, College of Pharmaceutical Sciences, Soochow University, Suzhou, China.
- College of Pharmaceutical Sciences, Soochow University, Suzhou, China.
| | - Zeng-Jie Yang
- Cell Signaling and Epigenetics Program, Fox Chase Cancer Center, Temple University Health System, Philadelphia, PA, USA.
- Cancer Epigenetics Institute, Fox Chase Cancer Center, Temple University Health System, Philadelphia, PA, USA.
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11
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Di Matteo A, Belloni E, Pradella D, Chiaravalli AM, Pini GM, Bugatti M, Alfieri R, Barzan C, Franganillo Tena E, Bione S, Terenzani E, Sessa F, Wyatt CDR, Vermi W, Ghigna C. Alternative Splicing Changes Promoted by NOVA2 Upregulation in Endothelial Cells and Relevance for Gastric Cancer. Int J Mol Sci 2023; 24:ijms24098102. [PMID: 37175811 PMCID: PMC10178952 DOI: 10.3390/ijms24098102] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 04/21/2023] [Accepted: 04/25/2023] [Indexed: 05/15/2023] Open
Abstract
Angiogenesis is crucial for cancer progression. While several anti-angiogenic drugs are in use for cancer treatment, their clinical benefits are unsatisfactory. Thus, a deeper understanding of the mechanisms sustaining cancer vessel growth is fundamental to identify novel biomarkers and therapeutic targets. Alternative splicing (AS) is an essential modifier of human proteome diversity. Nevertheless, AS contribution to tumor vasculature development is poorly known. The Neuro-Oncological Ventral Antigen 2 (NOVA2) is a critical AS regulator of angiogenesis and vascular development. NOVA2 is upregulated in tumor endothelial cells (ECs) of different cancers, thus representing a potential driver of tumor blood vessel aberrancies. Here, we identified novel AS transcripts generated upon NOVA2 upregulation in ECs, suggesting a pervasive role of NOVA2 in vascular biology. In addition, we report that NOVA2 is also upregulated in ECs of gastric cancer (GC), and its expression correlates with poor overall survival of GC patients. Finally, we found that the AS of the Rap Guanine Nucleotide Exchange Factor 6 (RapGEF6), a newly identified NOVA2 target, is altered in GC patients and associated with NOVA2 expression, tumor angiogenesis, and poor patient outcome. Our findings provide a better understanding of GC biology and suggest that AS might be exploited to identify novel biomarkers and therapeutics for anti-angiogenic GC treatments.
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Affiliation(s)
- Anna Di Matteo
- Istituto di Genetica Molecolare "Luigi Luca Cavalli-Sforza", Consiglio Nazionale delle Ricerche, 27100 Pavia, Italy
| | - Elisa Belloni
- Istituto di Genetica Molecolare "Luigi Luca Cavalli-Sforza", Consiglio Nazionale delle Ricerche, 27100 Pavia, Italy
| | - Davide Pradella
- Istituto di Genetica Molecolare "Luigi Luca Cavalli-Sforza", Consiglio Nazionale delle Ricerche, 27100 Pavia, Italy
| | | | - Giacomo Maria Pini
- Department of Pathology, Ospedale di Circolo, ASST-Sette Laghi, 21100 Varese, Italy
| | - Mattia Bugatti
- Department of Molecular and Translational Medicine, University of Brescia, 25100 Brescia, Italy
| | - Roberta Alfieri
- Istituto di Genetica Molecolare "Luigi Luca Cavalli-Sforza", Consiglio Nazionale delle Ricerche, 27100 Pavia, Italy
| | - Chiara Barzan
- Istituto di Genetica Molecolare "Luigi Luca Cavalli-Sforza", Consiglio Nazionale delle Ricerche, 27100 Pavia, Italy
- Istituto Universitario di Studi Superiori (IUSS), Università degli Studi di Pavia, 27100 Pavia, Italy
| | - Elena Franganillo Tena
- Istituto di Genetica Molecolare "Luigi Luca Cavalli-Sforza", Consiglio Nazionale delle Ricerche, 27100 Pavia, Italy
- Dipartimento di Biologia e Biotecnologie "Lazzaro Spallanzani", Università degli Studi di Pavia, 27100 Pavia, Italy
| | - Silvia Bione
- Istituto di Genetica Molecolare "Luigi Luca Cavalli-Sforza", Consiglio Nazionale delle Ricerche, 27100 Pavia, Italy
| | - Elisa Terenzani
- Istituto di Genetica Molecolare "Luigi Luca Cavalli-Sforza", Consiglio Nazionale delle Ricerche, 27100 Pavia, Italy
| | - Fausto Sessa
- Department of Pathology, Ospedale di Circolo, ASST-Sette Laghi, 21100 Varese, Italy
- Department of Medicine and Surgery, Università degli Studi dell'Insubria, 21100 Varese, Italy
| | - Christopher D R Wyatt
- Centre for Genomic Regulation, The Barcelona Institute of Science and Technology, 08036 Barcelona, Spain
| | - William Vermi
- Department of Molecular and Translational Medicine, University of Brescia, 25100 Brescia, Italy
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110-1010, USA
| | - Claudia Ghigna
- Istituto di Genetica Molecolare "Luigi Luca Cavalli-Sforza", Consiglio Nazionale delle Ricerche, 27100 Pavia, Italy
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12
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Johnson LG, Zhai C, Reever LM, Prusa KJ, Nair MN, Huff-Lonergan E, Lonergan SM. Characterizing the sarcoplasmic proteome of aged pork chops classified by purge loss. J Anim Sci 2023; 101:7031059. [PMID: 36751720 PMCID: PMC9994594 DOI: 10.1093/jas/skad046] [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: 11/30/2022] [Accepted: 02/03/2023] [Indexed: 02/09/2023] Open
Abstract
Unpredictable variation in quality, including fresh pork water-holding capacity, remains challenging to pork processors and customers. Defining the diverse factors that influence fresh pork water-holding capacity is necessary to make progress in refining pork quality prediction methods. The objective was to utilize liquid chromatography and mass spectrometry coupled with tandem mass tag (TMT) multiplexing to evaluate the sarcoplasmic proteome of aged pork loins classified by purge loss. Fresh commercial pork loins were collected, aged 12 or 14 d postmortem, and pork quality and sensory attributes were evaluated. Chops were classified into Low (N = 27, average purge = 0.33%), Intermediate (N = 27, average purge = 0.72%), or High (N = 27, average purge = 1.19%) chop purge groups. Proteins soluble in a low-ionic strength buffer were extracted, digested with trypsin, labeled with 11-plex isobaric TMT reagents, and detected using a Q-Exactive Mass Spectrometer. Between the Low and High purge groups, 40 proteins were differentially (P < 0.05) abundant. The Low purge group had a greater abundance of proteins classified as structural and contractile, sarcoplasmic reticulum and calcium regulating, chaperone, and citric acid cycle enzymes than the High purge group. The presence of myofibrillar proteins in the aged sarcoplasmic proteome is likely due to postmortem degradation. These observations support our hypothesis that pork chops with low purge have a greater abundance of structural proteins in the soluble protein fraction. Together, these and other proteins in the aged sarcoplasmic proteome may be biomarkers of pork water-holding capacity. Additional research should establish the utility of these proteins as biomarkers early postmortem and over subsequent aging periods.
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Affiliation(s)
- Logan G Johnson
- Department of Animal Science, Iowa State University, Ames, Iowa 50011, USA
| | - Chaoyu Zhai
- Department of Animal Science, University of Connecticut, Storrs, Connecticut 06269-4040, USA
| | - Leah M Reever
- Department of Food Science and Human Nutrition, Iowa State University, Ames, Iowa 50011, USA
| | - Kenneth J Prusa
- Department of Food Science and Human Nutrition, Iowa State University, Ames, Iowa 50011, USA
| | - Mahesh N Nair
- Department of Animal Sciences, Colorado State University, Fort Collins, Colorado 80523, USA
| | | | - Steven M Lonergan
- Department of Animal Science, Iowa State University, Ames, Iowa 50011, USA
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13
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Proteomic identification and structural basis for the interaction between sorting nexin SNX17 and PDLIM family proteins. Structure 2022; 30:1590-1602.e6. [DOI: 10.1016/j.str.2022.10.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 06/29/2022] [Accepted: 09/30/2022] [Indexed: 12/03/2022]
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14
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Fisher LAB, Schöck F. The unexpected versatility of ALP/Enigma family proteins. Front Cell Dev Biol 2022; 10:963608. [PMID: 36531944 PMCID: PMC9751615 DOI: 10.3389/fcell.2022.963608] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 11/22/2022] [Indexed: 12/04/2022] Open
Abstract
One of the most intriguing features of multicellular animals is their ability to move. On a cellular level, this is accomplished by the rearrangement and reorganization of the cytoskeleton, a dynamic network of filamentous proteins which provides stability and structure in a stationary context, but also facilitates directed movement by contracting. The ALP/Enigma family proteins are a diverse group of docking proteins found in numerous cellular milieus and facilitate these processes among others. In vertebrates, they are characterized by having a PDZ domain in combination with one or three LIM domains. The family is comprised of CLP-36 (PDLIM1), Mystique (PDLIM2), ALP (PDLIM3), RIL (PDLIM4), ENH (PDLIM5), ZASP (PDLIM6), and Enigma (PDLIM7). In this review, we will outline the evolution and function of their protein domains which confers their versatility. Additionally, we highlight their role in different cellular environments, focusing specifically on recent advances in muscle research using Drosophila as a model organism. Finally, we show the relevance of this protein family to human myopathies and the development of muscle-related diseases.
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15
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Genome-Wide Meta-Analysis Identifies Variants in DSCAM and PDLIM3 That Correlate with Efficacy Outcomes in Metastatic Renal Cell Carcinoma Patients Treated with Sunitinib. Cancers (Basel) 2022; 14:cancers14122838. [PMID: 35740506 PMCID: PMC9220885 DOI: 10.3390/cancers14122838] [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: 04/11/2022] [Revised: 05/24/2022] [Accepted: 06/02/2022] [Indexed: 02/04/2023] Open
Abstract
Individual response to sunitinib in metastatic renal cell carcinoma (mRCC) patients is highly variable. Earlier, sunitinib outcome was related to single nucleotide polymorphisms (SNPs) in CYP3A5 and ABCB1. Our aim is to provide novel insights into biological mechanisms underlying sunitinib action. We included mRCC patients from the European EuroTARGET consortium (n = 550) and the RIKEN cohort in Japan (n = 204) which were analysed separately and in a meta-analysis of genome-wide association studies (GWAS). SNPs were tested for association with progression-free survival (PFS) and overall survival (OS) using Cox regression. Summary statistics were combined using a fixed effect meta-analysis. SNP rs28520013 in PDLIM3 and the correlated SNPs rs2205096 and rs111356738 both in DSCAM, showed genome-wide significance (p < 5 × 10−8) with PFS and OS in the meta-analysis. The variant T-allele of rs28520013 associated with an inferior PFS of 5.1 months compared to 12.5 months in non-carriers (p = 4.02 × 10−10, HR = 7.26). T-allele carriers of rs28520013 showed an inferior OS of 6.9 months versus 30.2 months in non-carriers (p = 1.62 × 10−8, HR = 5.96). In this GWAS we identified novel genetic variants in PDLIM3 and DSCAM that impact PFS and OS in mRCC patients receiving sunitinib. The underlying link between the identified genes and the molecular mechanisms of sunitinib action needs to be elucidated.
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16
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Byron A, Griffith BGC, Herrero A, Loftus AEP, Koeleman ES, Kogerman L, Dawson JC, McGivern N, Culley J, Grimes GR, Serrels B, von Kriegsheim A, Brunton VG, Frame MC. Characterisation of a nucleo-adhesome. Nat Commun 2022; 13:3053. [PMID: 35650196 PMCID: PMC9160004 DOI: 10.1038/s41467-022-30556-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 05/02/2022] [Indexed: 11/09/2022] Open
Abstract
In addition to central functions in cell adhesion signalling, integrin-associated proteins have wider roles at sites distal to adhesion receptors. In experimentally defined adhesomes, we noticed that there is clear enrichment of proteins that localise to the nucleus, and conversely, we now report that nuclear proteomes contain a class of adhesome components that localise to the nucleus. We here define a nucleo-adhesome, providing experimental evidence for a remarkable scale of nuclear localisation of adhesion proteins, establishing a framework for interrogating nuclear adhesion protein functions. Adding to nuclear FAK's known roles in regulating transcription, we now show that nuclear FAK regulates expression of many adhesion-related proteins that localise to the nucleus and that nuclear FAK binds to the adhesome component and nuclear protein Hic-5. FAK and Hic-5 work together in the nucleus, co-regulating a subset of genes transcriptionally. We demonstrate the principle that there are subcomplexes of nuclear adhesion proteins that cooperate to control transcription.
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Affiliation(s)
- Adam Byron
- Cancer Research UK Edinburgh Centre, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, EH4 2XR, UK.
- Division of Molecular and Cellular Function, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9PT, UK.
| | - Billie G C Griffith
- Cancer Research UK Edinburgh Centre, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, EH4 2XR, UK
| | - Ana Herrero
- Cancer Research UK Edinburgh Centre, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, EH4 2XR, UK
- Instituto de Biomedicina y Biotecnología de Cantabria (IBBTEC), Consejo Superior de Investigaciones Científicas (CSIC)-Universidad de Cantabria, 39011, Santander, Spain
| | - Alexander E P Loftus
- Cancer Research UK Edinburgh Centre, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, EH4 2XR, UK
| | - Emma S Koeleman
- Cancer Research UK Edinburgh Centre, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, EH4 2XR, UK
- Leiden University Medical Center, 2333 ZC, Leiden, The Netherlands
- Division of Chromatin Networks, German Cancer Research Center (DKFZ) and Bioquant, 69120, Heidelberg, Germany
| | - Linda Kogerman
- Cancer Research UK Edinburgh Centre, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, EH4 2XR, UK
| | - John C Dawson
- Cancer Research UK Edinburgh Centre, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, EH4 2XR, UK
| | - Niamh McGivern
- Cancer Research UK Edinburgh Centre, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, EH4 2XR, UK
- Almac Diagnostic Services, 19 Seagoe Industrial Estate, Craigavon, BT63 5QD, UK
| | - Jayne Culley
- Cancer Research UK Edinburgh Centre, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, EH4 2XR, UK
| | - Graeme R Grimes
- MRC Human Genetics Unit, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, EH4 2XU, UK
| | - Bryan Serrels
- Cancer Research UK Edinburgh Centre, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, EH4 2XR, UK
- NanoString Technologies, Inc., Seattle, WA, 98109, USA
| | - Alex von Kriegsheim
- Cancer Research UK Edinburgh Centre, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, EH4 2XR, UK
| | - Valerie G Brunton
- Cancer Research UK Edinburgh Centre, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, EH4 2XR, UK
| | - Margaret C Frame
- Cancer Research UK Edinburgh Centre, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, EH4 2XR, UK
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17
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Aparicio-Bautista DI, Chávez-Valenzuela D, Ambriz-Álvarez G, Córdova-Fraga T, Reyes-Grajeda JP, Medina-Contreras Ó, Rodríguez-Cruz F, García-Sierra F, Zúñiga-Sánchez P, Gutiérrez-Gutiérrez AM, Arellanes-Robledo J, Basurto-Islas G. An Extremely Low-Frequency Vortex Magnetic Field Modifies Protein Expression, Rearranges the Cytoskeleton, and Induces Apoptosis of a Human Neuroblastoma Cell Line. Bioelectromagnetics 2022; 43:225-244. [PMID: 35437793 DOI: 10.1002/bem.22400] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 11/10/2021] [Accepted: 03/19/2022] [Indexed: 11/07/2022]
Abstract
Homogeneous extremely low-frequency electromagnetic fields (ELF-EMFs) alter biological phenomena, including the cell phenotype and proliferation rate. Heterogenous vortex magnetic fields (VMFs), a new approach of exposure to magnetic fields, induce systematic movements on charged biomolecules from target cells; however, the effect of VMFs on living systems remains uncertain. Here, we designed, constructed, and characterized an ELF-VMF-modified Rodin's coil to expose SH-SY5Y cells. Samples were analyzed by performing 2D-differential-gel electrophoresis, identified by MALDI-TOF/TOF, validated by western blotting, and characterized by confocal microscopy. A total of 106 protein spots were differentially expressed; 40 spots were downregulated and 66 were upregulated in the exposed cell proteome, compared to the control cell proteome. The identified spots are associated with cytoskeleton and cell viability proteins, and according to the protein-protein interaction network, a significant interaction among them was found. Our data revealed a decrease in cell survival associated with apoptotic cells without effects on the cell cycle, as well as evident changes in the cytoskeleton. We demonstrated that ELF-VMFs, at a specific frequency and exposure time, alter the cell proteome and structurally affect the target cells. This is the first report showing that VMF application might be a versatile system for testing different hypotheses in living systems, using appropriate exposure parameters.© 2022 Bioelectromagnetics Society.
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Affiliation(s)
- Diana I Aparicio-Bautista
- Laboratorio de Estructura de Proteínas, Instituto Nacional de Medicina Genómica, Ciudad de México, México
| | | | | | - Teodoro Córdova-Fraga
- División de Ciencias e Ingenierías, Universidad de Guanajuato, León, Guanajuato, México
| | - Juan P Reyes-Grajeda
- Laboratorio de Estructura de Proteínas, Instituto Nacional de Medicina Genómica, Ciudad de México, México
| | - Óscar Medina-Contreras
- Laboratorio de Investigación en Inmunología y Proteómica, Hospital Infantil de México Federico Gómez, Ciudad de México, México
| | - Fanny Rodríguez-Cruz
- Departamento de Biología Celular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV) Unidad Zacatenco, Ciudad de México, México
| | - Francisco García-Sierra
- Departamento de Biología Celular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV) Unidad Zacatenco, Ciudad de México, México
| | | | | | - Jaime Arellanes-Robledo
- CONACYT-Laboratorio de Enfermedades Hepáticas, Instituto Nacional de Medicina Genómica, Ciudad de México, México
| | - Gustavo Basurto-Islas
- División de Ciencias e Ingenierías, Universidad de Guanajuato, León, Guanajuato, México
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18
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Ribba AS, Fraboulet S, Sadoul K, Lafanechère L. The Role of LIM Kinases during Development: A Lens to Get a Glimpse of Their Implication in Pathologies. Cells 2022; 11:cells11030403. [PMID: 35159213 PMCID: PMC8834001 DOI: 10.3390/cells11030403] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 01/18/2022] [Accepted: 01/22/2022] [Indexed: 12/24/2022] Open
Abstract
The organization of cell populations within animal tissues is essential for the morphogenesis of organs during development. Cells recognize three-dimensional positions with respect to the whole organism and regulate their cell shape, motility, migration, polarization, growth, differentiation, gene expression and cell death according to extracellular signals. Remodeling of the actin filaments is essential to achieve these cell morphological changes. Cofilin is an important binding protein for these filaments; it increases their elasticity in terms of flexion and torsion and also severs them. The activity of cofilin is spatiotemporally inhibited via phosphorylation by the LIM domain kinases 1 and 2 (LIMK1 and LIMK2). Phylogenetic analysis indicates that the phospho-regulation of cofilin has evolved as a mechanism controlling the reorganization of the actin cytoskeleton during complex multicellular processes, such as those that occur during embryogenesis. In this context, the main objective of this review is to provide an update of the respective role of each of the LIM kinases during embryonic development.
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19
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Gomes G, do Amaral MJ, Bagri KM, Vasconcellos LM, Almeida MDS, Alvares LE, Mermelstein C. New Findings on LMO7 Transcripts, Proteins and Regulatory Regions in Human and Vertebrate Model Organisms and the Intracellular Distribution in Skeletal Muscle Cells. Int J Mol Sci 2021; 22:ijms222312885. [PMID: 34884689 PMCID: PMC8657913 DOI: 10.3390/ijms222312885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 11/25/2021] [Accepted: 11/26/2021] [Indexed: 12/04/2022] Open
Abstract
LMO7 is a multifunctional PDZ–LIM protein that can interact with different molecular partners and is found in several intracellular locations. The aim of this work was to shed light on LMO7 evolution, alternative transcripts, protein structure and gene regulation through multiple in silico analyses. We also explored the intracellular distribution of the LMO7 protein in chicken and zebrafish embryonic skeletal muscle cells by means of confocal fluorescence microscopy. Our results revealed a single LMO7 gene in mammals, sauropsids, Xenopus and in the holostean fish spotted gar while two lmo7 genes (lmo7a and lmo7b) were identified in teleost fishes. In addition, several different transcripts were predicted for LMO7 in human and in major vertebrate model organisms (mouse, chicken, Xenopus and zebrafish). Bioinformatics tools revealed several structural features of the LMO7 protein including intrinsically disordered regions. We found the LMO7 protein in multiple intracellular compartments in chicken and zebrafish skeletal muscle cells, such as membrane adhesion sites and the perinuclear region. Curiously, the LMO7 protein was detected within the nuclei of muscle cells in chicken but not in zebrafish. Our data showed that a conserved regulatory element may be related to muscle-specific LMO7 expression. Our findings uncover new and important information about LMO7 and open new challenges to understanding how the diverse regulation, structure and distribution of this protein are integrated into highly complex vertebrate cellular milieux, such as skeletal muscle cells.
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Affiliation(s)
- Geyse Gomes
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil; (G.G.); (K.M.B.); (L.M.V.)
| | | | - Kayo Moreira Bagri
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil; (G.G.); (K.M.B.); (L.M.V.)
| | - Larissa Melo Vasconcellos
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil; (G.G.); (K.M.B.); (L.M.V.)
| | - Marcius da Silva Almeida
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil;
| | - Lúcia Elvira Alvares
- Departamento de Bioquímica e Biologia Tecidual, Universidade de Campinas (UNICAMP), Campinas, São Paulo 13083-872, Brazil;
| | - Claudia Mermelstein
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil; (G.G.); (K.M.B.); (L.M.V.)
- Correspondence:
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20
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Guo ZS, Qu Z. PDLIM2: Signaling pathways and functions in cancer suppression and host immunity. Biochim Biophys Acta Rev Cancer 2021; 1876:188630. [PMID: 34571051 DOI: 10.1016/j.bbcan.2021.188630] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 08/30/2021] [Accepted: 09/22/2021] [Indexed: 12/20/2022]
Abstract
PDZ and LIM domains-containing proteins play pivotal functions in cell cytoskeleton organization, cell polarization and differentiation. As a key member of the family, PDLIM2 regulates stability and activity of transcription factors such as NF-κB, STATs and β-catenin, and thus exert it functions in inflammation, immunity, and cancer. PDLIM2 functions as a tumor suppressor in multiple tissues and it is often genetically mutated or epigenetically silenced in human cancers derived from lung, breast, ovarian and other histologies. However, in certain types of cancers, PDLIM2 may promote cancer cell proliferation and metastases. Therefore, PDLIM2 is added to a long list of genes that can function as tumor suppressor or oncogenic protein. During tumorigenesis induced by oncogenic viruses, PDLIM2 is a key target. Through promotion of NF-κB/RelA and STAT3 degradation, PDLIM2 enhances expression of proteins involved in antigen presentation and promotes T-cell activation while repressing multidrug resistance genes, thereby rendering mutated cells susceptible to immune surveillance and cytotoxicity mediated by immune cells and chemotherapeutic drugs. Intriguingly, PDLIM2 in alveolar macrophages (AMs) plays key roles in monitoring lung tumorigenesis, as its selective genetic deletion leads to constitutive activation of STAT3, driving monocyte differentiation to AMs with pro-tumorigenic polarization and activation. PDLIM2 has also been explored as a therapeutic target for cancer therapy. At the end of this review, we provide perspectives on this important molecule and discuss the future directions of both basic and translational studies.
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Affiliation(s)
- Zong Sheng Guo
- UPMC Hillman Cancer Center, Pittsburgh, PA, USA; Department of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
| | - Zhaoxia Qu
- UPMC Hillman Cancer Center, Pittsburgh, PA, USA; Department of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
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21
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Zhou JK, Fan X, Cheng J, Liu W, Peng Y. PDLIM1: Structure, function and implication in cancer. Cell Stress 2021; 5:119-127. [PMID: 34396044 PMCID: PMC8335553 DOI: 10.15698/cst2021.08.254] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Revised: 06/27/2021] [Accepted: 06/28/2021] [Indexed: 02/05/2023] Open
Abstract
PDLIM1, a member of the PDZ-LIM family, is a cytoskeletal protein and functions as a platform to form distinct protein complexes, thus participating in multiple physiological processes such as cytoskeleton regulation and synapse formation. Emerging evidence demonstrates that PDLIM1 is dysregualted in a variety of tumors and plays essential roles in tumor initiation and progression. In this review, we summarize the structure and function of PDLIM1, as well as its important roles in human cancers.
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Affiliation(s)
- Jian-Kang Zhou
- Laboratory of Molecular Oncology, Frontiers Science Center for Disease-related Molecular Network, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Xin Fan
- Laboratory of Molecular Oncology, Frontiers Science Center for Disease-related Molecular Network, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Jian Cheng
- Laboratory of Molecular Oncology, Frontiers Science Center for Disease-related Molecular Network, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, China.,Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Wenrong Liu
- Laboratory of Molecular Oncology, Frontiers Science Center for Disease-related Molecular Network, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Yong Peng
- Laboratory of Molecular Oncology, Frontiers Science Center for Disease-related Molecular Network, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, China
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22
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Huang X, Qu R, Peng Y, Yang Y, Fan T, Sun B, Khan AU, Wu S, Wei K, Xu C, Dai J, Ouyang J, Zhong S. Mechanical Sensing Element PDLIM5 Promotes Osteogenesis of Human Fibroblasts by Affecting the Activity of Microfilaments. Biomolecules 2021; 11:biom11050759. [PMID: 34069539 PMCID: PMC8161207 DOI: 10.3390/biom11050759] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 05/15/2021] [Accepted: 05/17/2021] [Indexed: 12/23/2022] Open
Abstract
Human skin fibroblasts (HSFs) approximate the multidirectional differentiation potential of mesenchymal stem cells, so they are often used in differentiation, cell cultures, and injury repair. They are an important seed source in the field of bone tissue engineering. However, there are a few studies describing the mechanism of osteogenic differentiation of HSFs. Here, osteogenic induction medium was used to induce fibroblasts to differentiate into osteoblasts, and the role of the mechanical sensitive element PDLIM5 in microfilament-mediated osteogenic differentiation of human fibroblasts was evaluated. The depolymerization of microfilaments inhibited the expression of osteogenesis-related proteins and alkaline phosphatase activity of HSFs, while the polymerization of microfilaments enhanced the osteogenic differentiation of HSFs. The evaluation of potential protein molecules affecting changes in microfilaments showed that during the osteogenic differentiation of HSFs, the expression of PDLIM5 increased with increasing induction time, and decreased under the state of microfilament depolymerization. Lentivirus-mediated PDLIM5 knockdown by shRNA weakened the osteogenic differentiation ability of HSFs and inhibited the expression and morphological changes of microfilament protein. The inhibitory effect of knocking down PDLIM5 on HSF osteogenic differentiation was reversed by a microfilament stabilizer. Taken together, these data suggest that PDLIM5 can mediate the osteogenic differentiation of fibroblasts by affecting the formation and polymerization of microfilaments.
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Affiliation(s)
- Xiaolan Huang
- Guangdong Provincial Key Laboratory of Medical Biomechanics & Department of Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou 510515, China; (X.H.); (R.Q.); (Y.P.); (Y.Y.); (T.F.); (B.S.); (A.U.K.); (S.W.)
| | - Rongmei Qu
- Guangdong Provincial Key Laboratory of Medical Biomechanics & Department of Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou 510515, China; (X.H.); (R.Q.); (Y.P.); (Y.Y.); (T.F.); (B.S.); (A.U.K.); (S.W.)
| | - Yan Peng
- Guangdong Provincial Key Laboratory of Medical Biomechanics & Department of Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou 510515, China; (X.H.); (R.Q.); (Y.P.); (Y.Y.); (T.F.); (B.S.); (A.U.K.); (S.W.)
| | - Yuchao Yang
- Guangdong Provincial Key Laboratory of Medical Biomechanics & Department of Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou 510515, China; (X.H.); (R.Q.); (Y.P.); (Y.Y.); (T.F.); (B.S.); (A.U.K.); (S.W.)
| | - Tingyu Fan
- Guangdong Provincial Key Laboratory of Medical Biomechanics & Department of Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou 510515, China; (X.H.); (R.Q.); (Y.P.); (Y.Y.); (T.F.); (B.S.); (A.U.K.); (S.W.)
| | - Bing Sun
- Guangdong Provincial Key Laboratory of Medical Biomechanics & Department of Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou 510515, China; (X.H.); (R.Q.); (Y.P.); (Y.Y.); (T.F.); (B.S.); (A.U.K.); (S.W.)
| | - Asmat Ullah Khan
- Guangdong Provincial Key Laboratory of Medical Biomechanics & Department of Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou 510515, China; (X.H.); (R.Q.); (Y.P.); (Y.Y.); (T.F.); (B.S.); (A.U.K.); (S.W.)
| | - Shutong Wu
- Guangdong Provincial Key Laboratory of Medical Biomechanics & Department of Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou 510515, China; (X.H.); (R.Q.); (Y.P.); (Y.Y.); (T.F.); (B.S.); (A.U.K.); (S.W.)
| | - Kuanhai Wei
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Guangdong Provincial Key Laboratory of Bone and Cartilage Regeneration Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China;
| | - Chujiang Xu
- Department of Orthopedics, TCM-Integrated Hospital, Southern Medical University, Guangzhou 510000, China;
| | - Jingxing Dai
- Guangdong Provincial Key Laboratory of Medical Biomechanics & Department of Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou 510515, China; (X.H.); (R.Q.); (Y.P.); (Y.Y.); (T.F.); (B.S.); (A.U.K.); (S.W.)
- Correspondence: (J.D.); (J.O.); (S.Z.); Tel.: +86-(20)-6164-8842 (J.D.); +86-(20)-6164-8199 (J.O.); +86-(20)-6164-8200 (S.Z.)
| | - Jun Ouyang
- Guangdong Provincial Key Laboratory of Medical Biomechanics & Department of Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou 510515, China; (X.H.); (R.Q.); (Y.P.); (Y.Y.); (T.F.); (B.S.); (A.U.K.); (S.W.)
- Correspondence: (J.D.); (J.O.); (S.Z.); Tel.: +86-(20)-6164-8842 (J.D.); +86-(20)-6164-8199 (J.O.); +86-(20)-6164-8200 (S.Z.)
| | - Shizhen Zhong
- Guangdong Provincial Key Laboratory of Medical Biomechanics & Department of Anatomy, School of Basic Medical Science, Southern Medical University, Guangzhou 510515, China; (X.H.); (R.Q.); (Y.P.); (Y.Y.); (T.F.); (B.S.); (A.U.K.); (S.W.)
- Correspondence: (J.D.); (J.O.); (S.Z.); Tel.: +86-(20)-6164-8842 (J.D.); +86-(20)-6164-8199 (J.O.); +86-(20)-6164-8200 (S.Z.)
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PDLIM5 Affects Chicken Skeletal Muscle Satellite Cell Proliferation and Differentiation via the p38-MAPK Pathway. Animals (Basel) 2021; 11:ani11041016. [PMID: 33916517 PMCID: PMC8065989 DOI: 10.3390/ani11041016] [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: 03/18/2021] [Accepted: 03/29/2021] [Indexed: 02/07/2023] Open
Abstract
Simple Summary PDZ and LIM domain 5 (PDLIM5) can increase C2C12 cell differentiation; however, the role of PDLIM5 in chicken skeletal muscle satellite cells (SMSCs) is unclear. In this study, the effect of PDLIM5 was verified on SMSCs in vitro, and then the molecular mechanism was determined by transcriptome sequencing. We demonstrated that PDLIM5 can positively affect chicken SMSC proliferation and differentiation via the p38-MAPK (mitogen activated kinase-like protein) pathway. These results indicate that PDLIM5 may be involved in chicken skeletal muscle growth and development. Abstract Skeletal muscle satellite cell growth and development is a complicated process driven by multiple genes. The PDZ and LIM domain 5 (PDLIM5) gene has been proven to function in C2C12 myoblast differentiation and is involved in the regulation of skeletal muscle development. The role of PDLIM5 in chicken skeletal muscle satellite cells, however, is unclear. In this study, in order to determine whether the PDLIM5 gene has a function in chicken skeletal muscle satellite cells, we examined the changes in proliferation and differentiation of chicken skeletal muscle satellite cells (SMSCs) after interfering and overexpressing PDLIM5 in cells. In addition, the molecular pathways of the PDLIM5 gene regulating SMSC proliferation and differentiation were analyzed by transcriptome sequencing. Our results show that PDLIM5 can promote the proliferation and differentiation of SMSCs; furthermore, through transcriptome sequencing, it can be found that the differential genes are enriched in the MAPK signaling pathway after knocking down PDLIM5. Finally, it was verified that PDLIM5 played an active role in the proliferation and differentiation of chicken SMSCs by activating the p38-MAPK signaling pathway. These results indicate that PDLIM5 may be involved in the growth and development of chicken skeletal muscle.
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24
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Liu X, Yuan H, Zhou J, Wang Q, Qi X, Bernal C, Avella D, Kaifi JT, Kimchi ET, Timothy P, Cheng K, Miao Y, Jiang K, Li G. LMO7 as an Unrecognized Factor Promoting Pancreatic Cancer Progression and Metastasis. Front Cell Dev Biol 2021; 9:647387. [PMID: 33763427 PMCID: PMC7982467 DOI: 10.3389/fcell.2021.647387] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 02/05/2021] [Indexed: 12/20/2022] Open
Abstract
Pancreatic cancer (PC) is one of the most lethal human malignancies without effective treatment. In an effort to discover key genes and molecular pathways underlying PC growth, we have identified LIM domain only 7 (LMO7) as an under-investigated molecule, which highly expresses in primary and metastatic human and mouse PC with the potential of impacting PC tumorigenesis and metastasis. Using genetic methods with siRNA, shRNA, and CRISPR-Cas9, we have successfully generated stable mouse PC cells with LMO7 knockdown or knockout. Using these cells with loss of LMO7 function, we have demonstrated that intrinsic LMO7 defect significantly suppresses PC cell proliferation, anchorage-free colony formation, and mobility in vitro and slows orthotopic PC tumor growth and metastasis in vivo. Mechanistic studies demonstrated that loss of LMO7 function causes PC cell-cycle arrest and apoptosis. These data indicate that LMO7 functions as an independent and unrecognized druggable factor significantly impacting PC growth and metastasis, which could be harnessed for developing a new targeted therapy for PC.
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Affiliation(s)
- Xinjian Liu
- Department of Surgery, University of Missouri-Columbia, Columbia, MO, United States.,Department of Pathogen Biology, Key Laboratory of Antibody Technique of National Health Commission of China, Nanjing Medical University, Nanjing, China
| | - Hao Yuan
- Department of Surgery, University of Missouri-Columbia, Columbia, MO, United States.,Pancreas Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Jing Zhou
- Department of Surgery, University of Missouri-Columbia, Columbia, MO, United States
| | - Qiongling Wang
- Department of Surgery, University of Missouri-Columbia, Columbia, MO, United States
| | - Xiaoqiang Qi
- Department of Surgery, University of Missouri-Columbia, Columbia, MO, United States
| | - Catharine Bernal
- Department of Surgery, University of Missouri-Columbia, Columbia, MO, United States
| | - Diego Avella
- Department of Surgery, University of Missouri-Columbia, Columbia, MO, United States.,Ellis Fischel Cancer Center, University of Missouri-Columbia, Columbia, MO, United States
| | - Jussuf T Kaifi
- Department of Surgery, University of Missouri-Columbia, Columbia, MO, United States.,Ellis Fischel Cancer Center, University of Missouri-Columbia, Columbia, MO, United States
| | - Eric T Kimchi
- Department of Surgery, University of Missouri-Columbia, Columbia, MO, United States.,Ellis Fischel Cancer Center, University of Missouri-Columbia, Columbia, MO, United States
| | - Parrett Timothy
- Department of Pathology and Anatomical Sciences, University of Missouri-Columbia, Columbia, MO, United States
| | - Kun Cheng
- Division of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Missouri-Kansas City, Kansas City, MO, United States
| | - Yi Miao
- Pancreas Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Kuirong Jiang
- Department of Surgery, University of Missouri-Columbia, Columbia, MO, United States.,Pancreas Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Guangfu Li
- Department of Surgery, University of Missouri-Columbia, Columbia, MO, United States.,Department of Molecular Microbiology and Immunology, University of Missouri, Columbia, MO, United States
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25
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Dhanda AS, Yang D, Kooner A, Guttman JA. Distribution of PDLIM1 at actin-rich structures generated by invasive and adherent bacterial pathogens. Anat Rec (Hoboken) 2020; 304:919-938. [PMID: 33022122 DOI: 10.1002/ar.24523] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 07/06/2020] [Accepted: 07/28/2020] [Indexed: 12/15/2022]
Abstract
The enteric bacterial pathogens Listeria monocytogenes (Listeria) and enteropathogenic Escherichia coli (EPEC) remodel the eukaryotic actin cytoskeleton during their disease processes. Listeria generate slender actin-rich comet/rocket tails to move intracellularly, and later, finger-like membrane protrusions to spread amongst host cells. EPEC remain extracellular, but generate similar actin-rich membranous protrusions (termed pedestals) to move atop the host epithelia. These structures are crucial for disease as diarrheal (and systemic) infections are significantly abrogated during infections with mutant strains that are unable to generate the structures. The current repertoire of host components enriched within these structures is vast and diverse. In this protein catalog, we and others have found that host actin crosslinkers, such as palladin and α-actinin-1, are routinely exploited. To expand on this list, we set out to investigate the distribution of PDLIM1, a scaffolding protein and binding partner of palladin and α-actinin-1, during bacterial infections. We show that PDLIM1 localizes to the site of initial Listeria entry into cells. Following this, PDLIM1 localizes to actin filament clouds surrounding immotile bacteria, and then colocalizes with actin once the comet/rocket tails are generated. Unlike palladin or α-actinin-1, PDLIM1 is maintained within the actin-rich core of membrane protrusions. Conversely, α-actinin-1, but not PDLIM1 (or palladin), is enriched at the membrane invagination that internalizes the Listeria-containing membrane protrusion. We also show that PDLIM1 is a component of the EPEC pedestal core and that its recruitment is dependent on the bacterial effector Tir. Our findings highlight PDLIM1 as another protein present within pathogen-induced actin-rich structures.
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Affiliation(s)
- Aaron S Dhanda
- Department of Biological Sciences, Centre for Cell Biology, Development, and Disease, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Diana Yang
- Department of Biological Sciences, Centre for Cell Biology, Development, and Disease, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Avneen Kooner
- Department of Biological Sciences, Centre for Cell Biology, Development, and Disease, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Julian A Guttman
- Department of Biological Sciences, Centre for Cell Biology, Development, and Disease, Simon Fraser University, Burnaby, British Columbia, Canada
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26
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Sun Q, Jiang Y, Yan X, Fan M, Zhang X, Xu H, Liao Z. Molecular Characterization of a Novel Shell Matrix Protein With PDZ Domain From Mytilus coruscus. Front Physiol 2020; 11:543758. [PMID: 33123020 PMCID: PMC7573561 DOI: 10.3389/fphys.2020.543758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 09/04/2020] [Indexed: 11/16/2022] Open
Abstract
Mollusk shells are products of biomineralization and possess excellent mechanical properties, and shell matrix proteins (SMPs) have important functions in shell formation. A novel SMP with a PDZ domain (PDZ-domain-containing-protein-1, PDCP-1) was identified from the shell matrices of Mytilus coruscus. In this study, the gene expression, function, and location of PDCP-1 were analyzed. PDCP-1 was characterized as an ∼70 kDa protein with a PDZ (postsynaptic density/discs large/zonula occludes) domain and a ZM (ZASP-like motif) domain. The PDCP-1 gene has a high expression level and specific location in the foot, mantle and adductor muscle. Recombinantly expressed PDCP-1 (rPDCP-1) altered the morphology of calcite crystals, the polymorph of calcite crystals, binding with both calcite and aragonite crystals, and inhibition of the crystallization rate of calcite crystals. In addition, anti-rPDCP-1 antibody was prepared, and immunohistochemistry and immunofluorescence analyses revealed the specific location of PDCP-1 in the mantle, the adductor muscle, and the aragonite (nacre and myostracum) layer of the shell, suggesting multiple functions of PDCP-1 in biomineralization, muscle-shell attachment, and muscle attraction. Furthermore, pull-down analysis revealed 19 protein partners of PDCP-1 from the shell matrices, which accordingly provided a possible interaction network of PDCP-1 in the shell. These results expand the understanding of the functions of PDZ-domain-containing proteins (PDCPs) in biomineralization and the supramolecular chemistry that contributes to shell formation.
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27
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Huang X, Qu R, Ouyang J, Zhong S, Dai J. An Overview of the Cytoskeleton-Associated Role of PDLIM5. Front Physiol 2020; 11:975. [PMID: 32848888 PMCID: PMC7426503 DOI: 10.3389/fphys.2020.00975] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 07/16/2020] [Indexed: 01/08/2023] Open
Abstract
Regenerative medicine represented by stem cell technology has become one of the pillar medical technologies for human disease treatment. Cytoskeleton plays important roles in maintaining cell morphology, bearing external forces, and maintaining the effectiveness of cell internal structure, among which cytoskeleton related proteins are involved in and play an indispensable role in the changes of cytoskeleton. PDLIM5 is a cytoskeleton-related protein that, like other cytoskeletal proteins, acts as a binding protein. PDZ and LIM domain 5 (PDLIM5), also known as ENH (Enigma homolog), is a cytoplasmic protein with a molecular mass of about 63 KDa that consists of a PDZ domain at the N-terminus and three LIM domains at the C-terminus. PDLIM5 binds to the cytoskeleton and membrane proteins through its PDZ domain and interacts with various signaling molecules, including protein kinases and transcription factors, through its LIM domain. As a cytoskeleton-related protein, PDLIM5 plays an important role in regulating cell proliferation, differentiation and cell fate decision in multiple tissues and cell types. In this review, we briefly summarize the state of knowledge on the PDLIM5 gene, structural properties, and molecular functional mechanisms of the PDLIM5 protein, and its role in cells, tissues, and organ systems, and describe the possible underlying molecular signaling pathways. In the last part of this review, we will focus on discussing the limitations of existing research and the future prospects of PDLIM5 research in turn.
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Affiliation(s)
- Xiaolan Huang
- Guangdong Provincial Key Laboratory of Medical Biomechanics, Department of Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Rongmei Qu
- Guangdong Provincial Key Laboratory of Medical Biomechanics, Department of Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Jun Ouyang
- Guangdong Provincial Key Laboratory of Medical Biomechanics, Department of Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Shizhen Zhong
- Guangdong Provincial Key Laboratory of Medical Biomechanics, Department of Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Jingxing Dai
- Guangdong Provincial Key Laboratory of Medical Biomechanics, Department of Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
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28
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Chiaradia E, Pepe M, Sassi P, Mohren R, Orvietani PL, Paolantoni M, Tognoloni A, Sforna M, Eveque M, Tombolesi N, Cillero-Pastor B. Comparative label-free proteomic analysis of equine osteochondrotic chondrocytes. J Proteomics 2020; 228:103927. [PMID: 32768606 DOI: 10.1016/j.jprot.2020.103927] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 07/16/2020] [Accepted: 07/28/2020] [Indexed: 02/07/2023]
Abstract
Osteochondrosis is a developmental orthopedic disease affecting growing cartilage in young horses. In this study we compared the proteomes of equine chondrocytes obtained from healthy and osteochondrotic cartilage using a label-free mass spectrometry approach. Quantitative changes of some proteins selected for their involvement in different functional pathways highlighted by the bioinformatics analysis, were validated by western blotting, while biochemical alterations of extracellular matrix were confirmed via Raman spectroscopy analysis. In total 1637 proteins were identified, of which 59 were differentially abundant. Overall, the results highlighted differentially represented proteins involved in metabolic and functional pathways that may be related to the failure of the endochondral ossification process occurring in osteochondrosis. In particular, we identified proteins involved in extracellular matrix degradation and organization, vitamin metabolism, osteoblast differentiation, apoptosis, protein folding and localization, signalling and gene expression modulation and lysosomal activities. These results provide valuable new insights to elucidate the underlying molecular mechanisms associated with the development and progression of osteochondrosis. SIGNIFICANCE: Osteochondrosis is a common articular disorder in young horses mainly due to defects in endochondral ossification. The pathogenesis of osteochondrosis is still poorly understood and only a limited number of proteomic studies have been conducted. This study provides a comprehensive characterization of proteomic alterations occurring in equine osteochondrotic chondrocytes, the only resident cell type that modulates differentiation and maturation of articular cartilage. The results evidenced alterations in abundance of proteins involved in functional and metabolic pathways and in extracellular matrix remodelling. These findings could help clarify some molecular aspects of osteochondrosis and open new fields of research for elucidating the pathogenesis of this disease.
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Affiliation(s)
- Elisabetta Chiaradia
- Department of Veterinary Medicine, University of Perugia, via San Costanzo 4, 06126 Perugia, Italy.
| | - Marco Pepe
- Department of Veterinary Medicine, University of Perugia, via San Costanzo 4, 06126 Perugia, Italy.
| | - Paola Sassi
- Department of Chemistry, Biology and Biotechnology, University of Perugia, via Elce di sotto 8, 06123 Perugia, Italy
| | - Ronny Mohren
- The Maastricht Multimodal Molecular Imaging Institute (M4I), Division of Imaging Mass Spectrometry, Maastricht University, The Netherlands
| | - Pier Luigi Orvietani
- Department of Experimental Medicine, University of Perugia, via Gambuli, 1, 06132 Perugia, Italy
| | - Marco Paolantoni
- Department of Chemistry, Biology and Biotechnology, University of Perugia, via Elce di sotto 8, 06123 Perugia, Italy
| | - Alessia Tognoloni
- Department of Veterinary Medicine, University of Perugia, via San Costanzo 4, 06126 Perugia, Italy
| | - Monica Sforna
- Department of Veterinary Medicine, University of Perugia, via San Costanzo 4, 06126 Perugia, Italy
| | - Maxime Eveque
- The Maastricht Multimodal Molecular Imaging Institute (M4I), Division of Imaging Mass Spectrometry, Maastricht University, The Netherlands
| | - Niki Tombolesi
- Department of Chemistry, Biology and Biotechnology, University of Perugia, via Elce di sotto 8, 06123 Perugia, Italy
| | - Berta Cillero-Pastor
- The Maastricht Multimodal Molecular Imaging Institute (M4I), Division of Imaging Mass Spectrometry, Maastricht University, The Netherlands
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Molecular characterization of a whirlin-like protein with biomineralization-related functions from the shell of Mytilus coruscus. PLoS One 2020; 15:e0231414. [PMID: 32267882 PMCID: PMC7141649 DOI: 10.1371/journal.pone.0231414] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 03/23/2020] [Indexed: 11/19/2022] Open
Abstract
Mollusc shells are produced from calcified skeletons and have excellent mechanical properties. Shell matrix proteins (SMPs) have important functions in shell formation. A 16.6 kDa whirlin-like protein (WLP) with a PDZ domain was identified in the shell of Mytilus coruscus as a novel SMP. In this study, the expression, function, and location of WLP were analysed. The WLP gene was highly expressed and specifically located in the adductor muscle and mantle. The expression of recombinant WLP (rWLP) was associated with morphological change, polymorphic change, binding ability, and crystallization rate inhibition of the calcium carbonate crystals in vitro. In addition, an anti-rWLP antibody was prepared, and the results from immunohistochemistry and immunofluorescence analyses revealed the specific location of the WLP in the mantle, adductor muscle, and myostracum layer of the shell, suggesting multiple functions for WLP in biomineralization, muscle-shell attachment, and muscle attraction. Furthermore, results from a pull-down analysis revealed 10 protein partners of WLP in the shell matrices and a possible network of interacting WLPs in the shell. In addition, in this study, one of the WLP partners, actin, was confirmed to have the ability to bind WLP. These results expand the understanding of the functions of PDZ-domain-containing proteins in biomineralization and provide clues for determining the mechanisms of myostracum formation and muscle-shell attachment.
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30
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Lin Q, Wei J, Qian J, You L, Qian W. Somatic Mutations Confer Severe Peripheral Neuropathy in POEMS Syndrome-Associated Multicentric Castleman Disease. Neurosci Bull 2020; 36:664-666. [PMID: 32166648 DOI: 10.1007/s12264-020-00481-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 12/10/2019] [Indexed: 11/25/2022] Open
Affiliation(s)
- Qingqing Lin
- Department of Hematology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China
- Malignant Lymphoma Diagnosis and Therapy Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China
| | - Juying Wei
- Department of Hematology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China
- Institute of Hematology, Zhejiang University, Hangzhou, 310003, China
- Malignant Lymphoma Diagnosis and Therapy Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China
| | - Jiejing Qian
- Department of Hematology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China
- Malignant Lymphoma Diagnosis and Therapy Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China
| | - Liangshun You
- Department of Hematology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China.
- Institute of Hematology, Zhejiang University, Hangzhou, 310003, China.
- Malignant Lymphoma Diagnosis and Therapy Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China.
| | - Wenbin Qian
- Department of Hematology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China.
- Institute of Hematology, Zhejiang University, Hangzhou, 310003, China.
- Malignant Lymphoma Diagnosis and Therapy Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China.
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31
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PDLIM4/RIL-mediated regulation of Src and malignant properties of breast cancer cells. Oncotarget 2020; 11:22-30. [PMID: 32002121 PMCID: PMC6967772 DOI: 10.18632/oncotarget.27410] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Accepted: 12/16/2019] [Indexed: 11/25/2022] Open
Abstract
RIL/PDLIM4 gene was identified as a tumor suppressor, its expression is frequently altered in various types of malignancies. The product of RIL/PDLIM4 gene is an adapter protein involved in the actin cytoskeleton remolding and assembly of stress fibers crucial for cell motility and epithelial-mesenchymal transition. Although the exact mechanism tethering RIL to cancer development remains unknown some pieces of evidence suggest that RIL may act by suppressing activation of the proto-oncogene tyrosine-protein kinase Src. To further explore this issue we tested how different expression levels of RIL affected the activity of Src in breast cancer cell lines. RIL was ectopically overexpressed in the cell cultures with its relatively low endogenous level, or, otherwise, was downregulated by RNA interference. Whereas we observed no correlation between expression levels of RIL and activity of Src we found that in several cell lines elevated levels of RIL were associated with higher cell migratory activity along with the increased incidence of breast xenograft formation and metastasizing. The obtained data suggest that in some breast cancer models RIL may not act as Src kinase inhibitor, but rather play the role of a potential oncogene that promotes cell motility and contributes to cancer cells spreading.
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32
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Jin Y, Diffee GM, Colman RJ, Anderson RM, Ge Y. Top-down Mass Spectrometry of Sarcomeric Protein Post-translational Modifications from Non-human Primate Skeletal Muscle. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2019; 30:2460-2469. [PMID: 30834509 PMCID: PMC6722035 DOI: 10.1007/s13361-019-02139-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 01/11/2019] [Accepted: 01/12/2019] [Indexed: 05/22/2023]
Abstract
Sarcomeric proteins, including myofilament and Z-disk proteins, play critical roles in regulating muscle contractile properties. A variety of isoforms and post-translational modifications (PTMs) of sarcomeric proteins have been shown to be associated with modulation of muscle functions and the occurrence of muscle diseases. Non-human primates (NHPs) are excellent research models for sarcopenia, a disease associated with alterations in sarcomeric proteins, due to their marked similarities to humans. However, the sarcomeric proteins in NHP skeletal muscle have not been well characterized. To gain a deeper understanding of sarcomeric proteins in NHP skeletal muscle, we employed top-down mass spectrometry (MS) to conduct a comprehensive analysis on isoforms and PTMs of sarcomeric proteins in rhesus macaque skeletal muscle. We identified 23 protein isoforms with 46 proteoforms of sarcomeric proteins, including 6 isoforms with 18 proteoforms from fast skeletal troponin T. Particularly, for the first time, a novel PDZ/LIM domain protein isoform, PDLIM7, was characterized with a newly identified protein sequence. Moreover, we also identified multiple PTMs on these proteins, including deamidation, methylation, acetylation, tri-methylation, phosphorylation, and S-glutathionylation. Most PTM sites were localized, including Asn13 deamidation on MLC-2S; His73 methylation on αactin; N-terminal acetylation on most identified proteins; N-terminal tri-methylation on MLC-1S, MLC-1F, MLC-2S, and MLC-2F; Ser14 phosphorylation on MLC-2S; and Ser15 and Ser16 phosphorylation on MLC-2F. In summary, a comprehensive characterization of sarcomeric proteins including multiple isoforms and PTMs in NHP skeletal muscle was achieved by analyzing intact proteins in the top-down MS approach.
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Affiliation(s)
- Yutong Jin
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Gary M Diffee
- Department of Kinesiology, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Ricki J Colman
- Wisconsin National Primate Research Center, University of Wisconsin-Madison, Madison, WI, 53715, USA
- Department of Cell and Regenerative Biology, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Rozalyn M Anderson
- Department of Medicine, University of Wisconsin-Madison, Madison, WI, 53705, USA
- Geriatric Research Education and Clinical Center, William S. Middleton Memorial Veterans Hospital, Madison, WI, 53705, USA
| | - Ying Ge
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, 53706, USA.
- Department of Cell and Regenerative Biology, University of Wisconsin-Madison, Madison, WI, 53705, USA.
- Human Proteomics Program, University of Wisconsin-Madison, Madison, WI, 53705, USA.
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33
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Okubo K, Miyazoe D, Nishiike Y. A conceptual framework for understanding sexual differentiation of the teleost brain. Gen Comp Endocrinol 2019; 284:113129. [PMID: 30825478 DOI: 10.1016/j.ygcen.2019.02.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 02/08/2019] [Accepted: 02/26/2019] [Indexed: 12/31/2022]
Abstract
Vertebrate brains are sexually differentiated, giving rise to differences in various physiological and behavioral phenotypes between the sexes. In developing mammals and birds, the neural substrate underlying sex-dependent physiology and behavior undergoes an irreversible process of sexual differentiation due to the effects of perinatal gonadal steroids and sex chromosome complement. The differentiated neural substrate is then activated in the adult by the sex-specific steroid milieu to facilitate the expression of sex-typical phenotypes. However, this well-established concept does not hold for teleost fish, whose sexual phenotypes (behavioral or otherwise) are highly labile throughout life and can be reversed even in adulthood. Indeed, the available evidence suggests that, in teleosts, neither gonadal steroids early in development nor the sex chromosome complement contribute much to brain sexual differentiation; instead, steroids in adulthood serve to both differentiate the neural substrate and activate it to elicit sex-typical phenotypes in a transient and reversible manner. Evidence further suggests that marked sexual dimorphisms and adult steroid-dependent lability in the neural expression of sex steroid receptors constitute the primary molecular basis for sexual differentiation and lability of the teleost brain. The consequent sexually dimorphic but reversible steroid sensitivity in response to the adult steroid milieu may enable the teleost brain to maintain lifelong sexual lability and to undergo phenotypic sex reversal.
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Affiliation(s)
- Kataaki Okubo
- Department of Aquatic Bioscience, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo, Tokyo 113-8657, Japan.
| | - Daichi Miyazoe
- Department of Aquatic Bioscience, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo, Tokyo 113-8657, Japan
| | - Yuji Nishiike
- Department of Aquatic Bioscience, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo, Tokyo 113-8657, Japan
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34
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Billing AM, Dib SS, Bhagwat AM, da Silva IT, Drummond RD, Hayat S, Al-Mismar R, Ben-Hamidane H, Goswami N, Engholm-Keller K, Larsen MR, Suhre K, Rafii A, Graumann J. A Systems-level Characterization of the Differentiation of Human Embryonic Stem Cells into Mesenchymal Stem Cells. Mol Cell Proteomics 2019; 18:1950-1966. [PMID: 31332097 PMCID: PMC6773553 DOI: 10.1074/mcp.ra119.001356] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 07/12/2019] [Indexed: 12/22/2022] Open
Abstract
Mesenchymal stem/stromal cells (MSCs) are self-renewing multipotent cells with regenerative, secretory and immunomodulatory capabilities that are beneficial for the treatment of various diseases. To avoid the issues that come with using tissue-derived MSCs in therapy, MSCs may be generated by the differentiation of human embryonic stems cells (hESCs) in culture. However, the changes that occur during the differentiation process have not been comprehensively characterized. Here, we combined transcriptome, proteome and phosphoproteome profiling to perform an in-depth, multi-omics study of the hESCs-to-MSCs differentiation process. Based on RNA-to-protein correlation, we determined a set of high confidence genes that are important to differentiation. Among the earliest and strongest induced proteins with extensive differential phosphorylation was AHNAK, which we hypothesized to be a defining factor in MSC biology. We observed two distinct expression waves of developmental HOX genes and an AGO2-to-AGO3 switch in gene silencing. Exploring the kinetic of noncoding ORFs during differentiation, we mapped new functions to well annotated long noncoding RNAs (CARMN, MALAT, NEAT1, LINC00152) as well as new candidates which we identified to be important to the differentiation process. Phosphoproteome analysis revealed ESC and MSC-specific phosphorylation motifs with PAK2 and RAF1 as top predicted upstream kinases in MSCs. Our data represent a rich systems-level resource on ESC-to-MSC differentiation that will be useful for the study of stem cell biology.
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Affiliation(s)
- Anja M Billing
- Research Division, Weill Cornell Medicine Qatar, Weill Cornell University, P.O. Box 24144, Doha, Qatar.
| | - Shaima S Dib
- Research Division, Weill Cornell Medicine Qatar, Weill Cornell University, P.O. Box 24144, Doha, Qatar
| | - Aditya M Bhagwat
- Research Division, Weill Cornell Medicine Qatar, Weill Cornell University, P.O. Box 24144, Doha, Qatar
| | - Israel T da Silva
- Laboratory of Bioinformatics and Computational Biology, A. C., Camargo Cancer Center, São Paulo 01508-010, Brazil; Laboratory of Molecular Immunology, The Rockefeller University, New York, New York 10065
| | - Rodrigo D Drummond
- Laboratory of Bioinformatics and Computational Biology, A. C., Camargo Cancer Center, São Paulo 01508-010, Brazil
| | - Shahina Hayat
- Research Division, Weill Cornell Medicine Qatar, Weill Cornell University, P.O. Box 24144, Doha, Qatar
| | - Rasha Al-Mismar
- Research Division, Weill Cornell Medicine Qatar, Weill Cornell University, P.O. Box 24144, Doha, Qatar
| | - Hisham Ben-Hamidane
- Research Division, Weill Cornell Medicine Qatar, Weill Cornell University, P.O. Box 24144, Doha, Qatar
| | - Neha Goswami
- Research Division, Weill Cornell Medicine Qatar, Weill Cornell University, P.O. Box 24144, Doha, Qatar
| | - Kasper Engholm-Keller
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, 5230 Odense, Denmark; Children's Medical Research Institute, University of Sydney, Westmead, NSW 2145, Australia
| | - Martin R Larsen
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, 5230 Odense, Denmark
| | - Karsten Suhre
- Research Division, Weill Cornell Medicine Qatar, Weill Cornell University, P.O. Box 24144, Doha, Qatar
| | - Arash Rafii
- Research Division, Weill Cornell Medicine Qatar, Weill Cornell University, P.O. Box 24144, Doha, Qatar; Department of Gynecology and Obstetrics, Hôpital Foch, 92100 Suresnes, France
| | - Johannes Graumann
- Research Division, Weill Cornell Medicine Qatar, Weill Cornell University, P.O. Box 24144, Doha, Qatar.
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35
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Mi S, Li X, Zhang CH, Liu JQ, Huang DQ. Characterization and discrimination of Tibetan and Duroc × (Landrace × Yorkshire) pork using label-free quantitative proteomics analysis. Food Res Int 2019; 119:426-435. [DOI: 10.1016/j.foodres.2019.02.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 02/06/2019] [Accepted: 02/07/2019] [Indexed: 01/04/2023]
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36
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Klein ME, Dickson MA, Antonescu C, Qin LX, Dooley SJ, Barlas A, Manova K, Schwartz GK, Crago AM, Singer S, Koff A, Tap WD. PDLIM7 and CDH18 regulate the turnover of MDM2 during CDK4/6 inhibitor therapy-induced senescence. Oncogene 2018; 37:5066-5078. [PMID: 29789718 PMCID: PMC6137027 DOI: 10.1038/s41388-018-0332-y] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Revised: 04/05/2018] [Accepted: 05/01/2018] [Indexed: 12/16/2022]
Abstract
CDK4/6 inhibitors are being used to treat a variety of human malignancies. In well-differentiated and dedifferentiated liposarcoma their clinical promise is associated with their ability to downregulate the MDM2 protein. The downregulation of MDM2 following treatment with CDK4/6 inhibitors also induces many cultured tumor cell lines derived from different types of malignancies to progress from quiescence into senescence. Here we used cultured human cell lines and defined a role for PDLIM7 and CDH18, regulating MDM2 protein in CDK4/6 inhibitor-treated cells. Materials from our previous phase II trials with palbociclib were then used to demonstrate that expression of CDH18 protein was associated with response, measured as both progression-free survival and overall survival. This supports the hypothesis that the biologic transition from quiescence to senescence has clinical relevance for this class of drugs.
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Affiliation(s)
- Mary E Klein
- The Louis V. Gerstner Graduate School of Biomedical Science, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA.,The Programs in MolecularMemorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | - Mark A Dickson
- Departments of Medicine, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA.,Departments of Medicine, Weill Cornell Medical College, New York, NY, 10021, USA
| | - Cristina Antonescu
- Departments of Pathology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | - Li-Xuan Qin
- Departments of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | - Scott J Dooley
- Center for Advanced Retinal and Ocular Therapeutics, Department of Ophthalmology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Afsar Barlas
- Developmental Biology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | - Katia Manova
- Developmental Biology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | - Gary K Schwartz
- Division of Hematology and Oncology, Columbia University Medical Center, Herbert Irving Pavilion 9th floor, 161 Fort Washington Avenue, New York, NY, 10032, USA
| | - Aimee M Crago
- Departments of Surgery, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA.,Departments of Surgery, Weill Cornell Medical College, New York, NY, 10021, USA
| | - Samuel Singer
- Departments of Surgery, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA.,Departments of Surgery, Weill Cornell Medical College, New York, NY, 10021, USA
| | - Andrew Koff
- The Louis V. Gerstner Graduate School of Biomedical Science, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA. .,The Programs in MolecularMemorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA.
| | - William D Tap
- Departments of Medicine, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA.,Departments of Medicine, Weill Cornell Medical College, New York, NY, 10021, USA
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37
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Shum AMY, Poljak A, Bentley NL, Turner N, Tan TC, Polly P. Proteomic profiling of skeletal and cardiac muscle in cancer cachexia: alterations in sarcomeric and mitochondrial protein expression. Oncotarget 2018; 9:22001-22022. [PMID: 29774118 PMCID: PMC5955146 DOI: 10.18632/oncotarget.25146] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 03/10/2018] [Indexed: 01/06/2023] Open
Abstract
Background Cancer cachexia is observed in more than 50% of advanced cancer patients, and impairs quality of life and prognosis. A variety of pathways are likely to be dysregulated. Hence, a broad-spectrum understanding of the disease process is best achieved by a discovery based approach such as proteomics. Results More than 300 proteins were identified with > 95% confidence in correct sequence identification, of which 5–10% were significantly differentially expressed in cachectic tissues (p-value of 0.05; 27 proteins from gastrocnemius, 34 proteins from soleus and 24 proteins from heart). The two most pronounced functional groups being sarcomeric proteins (mostly upregulated across all three muscle types) and energy/metabolism proteins (mostly downregulated across all muscle types). Electron microscopy revealed disintegration of the sarcomere and morphological aberrations of mitochondria in the cardiac muscle of colon 26 (C26) carcinoma mice. Materials and Methods The colon 26 (C26) carcinoma mouse model of cachexia was used to analyse soleus, gastrocnemius and cardiac muscles using two 8-plex iTRAQ proteomic experiments and tandem mass spectrometry (LCMSMS). Differentially expressed proteomic lists for protein clustering and enrichment of biological processes, molecular pathways, and disease related pathways were analysed using bioinformatics. Cardiac muscle ultrastructure was explored by electron microscopy. Conclusions Morphological and proteomic analyses suggested molecular events associated with disintegrated sarcomeric structure with increased dissolution of Z-disc and M-line proteins. Altered mitochondrial morphology, in combination with the reduced expression of proteins regulating substrate and energy metabolism, suggest that muscle cells are likely to be undergoing a state of energy crisis which ultimately results in cancer-induced cachexia.
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Affiliation(s)
- Angie M Y Shum
- Mechanisms of Disease and Translational Research, School of Medical Sciences, Faculty of Medicine, UNSW Sydney, New South Wales, Australia.,Department of Pathology, School of Medical Sciences, Faculty of Medicine, UNSW Sydney, New South Wales, Australia
| | - Anne Poljak
- Department of Pharmacology, School of Medical Sciences, Faculty of Medicine, UNSW Sydney, New South Wales, Australia.,Bioanalytical Mass Spectrometry Facility, UNSW Sydney, New South Wales, Australia.,Centre for Healthy Brain Ageing, School of Psychiatry, UNSW Sydney, New South Wales, Australia
| | - Nicholas L Bentley
- Mechanisms of Disease and Translational Research, School of Medical Sciences, Faculty of Medicine, UNSW Sydney, New South Wales, Australia.,Department of Pharmacology, School of Medical Sciences, Faculty of Medicine, UNSW Sydney, New South Wales, Australia
| | - Nigel Turner
- Department of Pharmacology, School of Medical Sciences, Faculty of Medicine, UNSW Sydney, New South Wales, Australia
| | - Timothy C Tan
- Mechanisms of Disease and Translational Research, School of Medical Sciences, Faculty of Medicine, UNSW Sydney, New South Wales, Australia.,Department of Pathology, School of Medical Sciences, Faculty of Medicine, UNSW Sydney, New South Wales, Australia.,Western Clinical School and Westmead Hospital, Westmead, New South Wales, Australia
| | - Patsie Polly
- Mechanisms of Disease and Translational Research, School of Medical Sciences, Faculty of Medicine, UNSW Sydney, New South Wales, Australia.,Department of Pathology, School of Medical Sciences, Faculty of Medicine, UNSW Sydney, New South Wales, Australia
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38
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PDLIM5 identified by label-free quantitative proteomics as a potential novel biomarker of papillary thyroid carcinoma. Biochem Biophys Res Commun 2018; 499:338-344. [PMID: 29574154 DOI: 10.1016/j.bbrc.2018.03.159] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 03/20/2018] [Indexed: 01/14/2023]
Abstract
In order to better understand the mechanisms underlying the development of papillary thyroid carcinoma (PTC), and to identify new potential biomarkers, high-resolution label-free mass spectrometry was performed on PTC tissues and adjacent normal thyroid tissues from six patients. In this process, 2788 proteins were identified, out of which 49 proteins presented significant differences between PTC tissues and adjacent normal thyroid tissues. Gene ontology revealed that the majority of these proteins are involved in the catalytic activity and binding. We selected three proteins with differential expressions: PDZ and LIM domain 5 (PDLIM5), PDLIM1 and ALDH1A1; Protein expressions were further verified by RT-PCR and western blot. Among these, expression of PDLIM5 and PDLIM1 was up-regulated, while that of ALDH1A1 was down-regulated in PTC tissues. Next, we confirmed their expression through quantitative dot blot (QDB) technique. We found that knockdown of PDLIM5 expression in the B-CPAP cell line could inhibit the migration, invasion and proliferation of PTC cells. In addition, PDLIM5 knockdown reduced Ras and Phospho-ERK1/2 expression. Thus, we suggested that PDLIM5 promotes PTC via activation of the Ras-ERK pathway. Our research provides new molecular insight into the function of PDLIM5, which may assist in studying the mechanism of PTC. In addition, PDLIM5 could be further explored as a potential candidate for PTC treatment.
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39
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Yuda A, Lee WS, Petrovic P, McCulloch CA. Novel proteins that regulate cell extension formation in fibroblasts. Exp Cell Res 2018; 365:85-96. [PMID: 29476834 DOI: 10.1016/j.yexcr.2018.02.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Revised: 02/19/2018] [Accepted: 02/20/2018] [Indexed: 01/05/2023]
Abstract
Cell extensions are critical structures that enable matrix remodeling in wound healing and cancer invasion but the regulation of their formation is not well-defined. We searched for new proteins that mediated cell extension formation over collagen by tandem mass tagged mass spectrometry analysis of purified extensions in 3T3 fibroblasts. Unexpectedly, importin-5, ENH isoform 1b (PDLIM5) and 26 S protease regulatory subunit 6B (PSMC4) were more abundant (> 10-fold) in membrane-penetrating cell extensions than cell bodies, which was confirmed by immunostaining and immunoblotting and also observed in human gingival fibroblasts. After siRNA knockdown of these proteins and plating cells on grid-supported floating collagen gels for 6 h, formation of cell extensions and collagen remodeling were examined. Knockdown of importin-5 reduced collagen compaction (1.9-fold), pericellular collagen degradation (~ 1.8-fold) and number of cell extensions (~ 69%). Knockdown of PSMC4 reduced collagen compaction (~ 1.5-fold), pericellular collagen degradation (~ 1.7-fold) and number of cell extensions (~ 42%). Knockdown of PDLIM5 reduced collagen compaction (~ 1.6-fold) and number of cell extensions (~ 21%). Inhibition of the TGF-β RI kinase, Smad3 or ROCK-II signaling pathways reduced the abundance of PDLIM5 in cell extensions but PSMC4 and importin-5 were reduced only by Smad3 or ROCK-II inhibitors. We conclude that these novel proteins are required for cell extension formation and their recruitment into extensions involves the Smad3 and ROCK signaling pathways.
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Affiliation(s)
- A Yuda
- Matrix Dynamics Group, Faculty of Dentistry, University of Toronto, Canada
| | - W S Lee
- Matrix Dynamics Group, Faculty of Dentistry, University of Toronto, Canada
| | - P Petrovic
- Matrix Dynamics Group, Faculty of Dentistry, University of Toronto, Canada
| | - C A McCulloch
- Matrix Dynamics Group, Faculty of Dentistry, University of Toronto, Canada.
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40
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Pilling C, Cooper JA. SOCS2 Binds to and Regulates EphA2 through Multiple Mechanisms. Sci Rep 2017; 7:10838. [PMID: 28883622 PMCID: PMC5589800 DOI: 10.1038/s41598-017-11040-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Accepted: 08/15/2017] [Indexed: 02/08/2023] Open
Abstract
Suppressors of cytokine signaling (SOCS) proteins inhibit signaling by serving as substrate receptors for the Cullin5-RING E3 ubiquitin ligase (CRL5) and through a variety of CRL5-independent mechanisms. CRL5, SOCS2 and SOCS6 are implicated in suppressing transformation of epithelial cells. We identified cell proteins that interact with SOCS2 and SOCS6 using two parallel proteomics techniques: BioID and Flag affinity purification mass spectrometry. The receptor tyrosine kinase ephrin type-A receptor 2 (EphA2) was identified as a SOCS2-interacting protein. SOCS2-EphA2 binding requires the SOCS2 SH2 domain and EphA2 activation loop autophosphorylation, which is stimulated by Ephrin A1 (EfnA1) or by phosphotyrosine phosphatase inhibition. Surprisingly, EfnA1-stimulated EphA2-SOCS2 binding is delayed until EphA2 has been internalized into endosomes. This suggests that SOCS2 binds to EphA2 in the context of endosomal membranes. We also found that SOCS2 overexpression decreases steady state levels of EphA2, consistent with increased EphA2 degradation. This effect is indirect: SOCS2 induces EfnA1 expression, and EfnA1 induces EphA2 down-regulation. Other RTKs have been reported to bind, and be regulated by, over-expressed SOCS proteins. Our data suggest that SOCS protein over-expression may regulate receptor tyrosine kinases through indirect and direct mechanisms.
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Affiliation(s)
- Carissa Pilling
- Division of Basic Sciences, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave N, Seattle, Washington, 98109, USA.,Molecular and Cellular Biology Program, 1959 NE Pacific Street, HSB T-466, University of Washington, Box 357275, Seattle, WA, 98195-7275, USA
| | - Jonathan A Cooper
- Division of Basic Sciences, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave N, Seattle, Washington, 98109, USA.
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Evaluation of in vivo and in vitro models of toxicity by comparison of toxicogenomics data with the literature. Methods 2017; 132:57-65. [PMID: 28716510 DOI: 10.1016/j.ymeth.2017.07.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 07/10/2017] [Accepted: 07/11/2017] [Indexed: 02/01/2023] Open
Abstract
Toxicity affecting humans is studied by observing the effects of chemical substances in animal organisms (in vivo) or in animal and human cultivated cell lines (in vitro). Toxicogenomics studies collect gene expression profiles and histopathology assessment data for hundreds of drugs and pollutants in standardized experimental designs using different model systems. These data are an invaluable source for analyzing genome-wide drug response in biological systems. However, a problem remains that is how to evaluate the suitability of heterogeneous in vitro and in vivo systems to model the many different aspects of human toxicity. We propose here that a given model system (cell type or animal organ) is supported to appropriately describe a particular aspect of human toxicity if the set of compounds associated in the literature with that aspect of toxicity causes a change in expression of genes with a particular function in the tested model system. This approach provides candidate genes to explain the toxicity effect (the differentially expressed genes) and the compounds whose effect could be modeled (the ones producing both the change of expression in the model system and that are associated with the human phenotype in the literature). Here we present an application of this approach using a computational pipeline that integrates compound-induced gene expression profiles (from the Open TG-GATEs database) and biomedical literature annotations (from the PubMed database) to evaluate the suitability of (human and rat) in vitro systems as well as rat in vivo systems to model human toxicity.
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42
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Abend A, Shkedi O, Fertouk M, Caspi LH, Kehat I. Salt-inducible kinase induces cytoplasmic histone deacetylase 4 to promote vascular calcification. EMBO Rep 2017; 18:1166-1185. [PMID: 28588072 PMCID: PMC5494505 DOI: 10.15252/embr.201643686] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 04/18/2017] [Accepted: 04/26/2017] [Indexed: 12/25/2022] Open
Abstract
A pathologic osteochondrogenic differentiation of vascular smooth muscle cells (VSMCs) promotes arterial calcifications, a process associated with significant morbidity and mortality. The molecular pathways promoting this pathology are not completely understood. We studied VSMCs, mouse aortic rings, and human aortic valves and showed here that histone deacetylase 4 (HDAC4) is upregulated early in the calcification process. Gain- and loss-of-function assays demonstrate that HDAC4 is a positive regulator driving this pathology. HDAC4 can shuttle between the nucleus and cytoplasm, but in VSMCs, the cytoplasmic rather than the nuclear activity of HDAC4 promotes calcification, and a nuclear-localized mutant of HDAC4 fails to promote calcification. The cytoplasmic location and function of HDAC4 is controlled by the activity of salt-inducible kinase (SIK). Pharmacologic inhibition of SIK sends HDAC4 to the nucleus and inhibits the calcification process in VSMCs, aortic rings, and in vivo In the cytoplasm, HDAC4 binds and its activity depends on the adaptor protein ENIGMA (Pdlim7) to promote vascular calcification. These results establish a cytoplasmic role for HDAC4 and identify HDAC4, SIK, and ENIGMA as mediators of vascular calcification.
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Affiliation(s)
- Alon Abend
- The Rappaport Institute and the Bruce Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel
| | - Omer Shkedi
- The Rappaport Institute and the Bruce Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel
| | - Michal Fertouk
- The Rappaport Institute and the Bruce Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel
- Department of Cardiac Surgery, Rambam Medical Center, Haifa, Israel
| | - Lilac H Caspi
- The Rappaport Institute and the Bruce Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel
| | - Izhak Kehat
- The Rappaport Institute and the Bruce Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel
- Department of Cardiology and the Clinical Research Institute at Rambam, Rambam Medical Center, Haifa, Israel
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Abstract
Cardiac and skeletal striated muscles are intricately designed machines responsible for muscle contraction. Coordination of the basic contractile unit, the sarcomere, and the complex cytoskeletal networks are critical for contractile activity. The sarcomere is comprised of precisely organized individual filament systems that include thin (actin), thick (myosin), titin, and nebulin. Connecting the sarcomere to other organelles (e.g., mitochondria and nucleus) and serving as the scaffold to maintain cellular integrity are the intermediate filaments. The costamere, on the other hand, tethers the sarcomere to the cell membrane. Unique structures like the intercalated disc in cardiac muscle and the myotendinous junction in skeletal muscle help synchronize and transmit force. Intense investigation has been done on many of the proteins that make up these cytoskeletal assemblies. Yet the details of their function and how they interconnect have just started to be elucidated. A vast number of human myopathies are contributed to mutations in muscle proteins; thus understanding their basic function provides a mechanistic understanding of muscle disorders. In this review, we highlight the components of striated muscle with respect to their interactions, signaling pathways, functions, and connections to disease. © 2017 American Physiological Society. Compr Physiol 7:891-944, 2017.
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Affiliation(s)
- Christine A Henderson
- Department of Cellular and Molecular Medicine, The University of Arizona, Tucson, Arizona, USA.,Sarver Molecular Cardiovascular Research Program, The University of Arizona, Tucson, Arizona, USA
| | - Christopher G Gomez
- Department of Cellular and Molecular Medicine, The University of Arizona, Tucson, Arizona, USA.,Sarver Molecular Cardiovascular Research Program, The University of Arizona, Tucson, Arizona, USA
| | - Stefanie M Novak
- Department of Cellular and Molecular Medicine, The University of Arizona, Tucson, Arizona, USA.,Sarver Molecular Cardiovascular Research Program, The University of Arizona, Tucson, Arizona, USA
| | - Lei Mi-Mi
- Department of Cellular and Molecular Medicine, The University of Arizona, Tucson, Arizona, USA.,Sarver Molecular Cardiovascular Research Program, The University of Arizona, Tucson, Arizona, USA
| | - Carol C Gregorio
- Department of Cellular and Molecular Medicine, The University of Arizona, Tucson, Arizona, USA.,Sarver Molecular Cardiovascular Research Program, The University of Arizona, Tucson, Arizona, USA
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Konze SA, Werneburg S, Oberbeck A, Olmer R, Kempf H, Jara-Avaca M, Pich A, Zweigerdt R, Buettner FFR. Proteomic Analysis of Human Pluripotent Stem Cell Cardiomyogenesis Revealed Altered Expression of Metabolic Enzymes and PDLIM5 Isoforms. J Proteome Res 2017; 16:1133-1149. [DOI: 10.1021/acs.jproteome.6b00534] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Sarah A. Konze
- Institute
of Clinical Biochemistry, Hannover Medical School, 30625 Hannover, Germany
- REBIRTH
Cluster of Excellence, Hannover Medical School, 30625 Hannover, Germany
| | - Sebastian Werneburg
- Institute
of Clinical Biochemistry, Hannover Medical School, 30625 Hannover, Germany
- REBIRTH
Cluster of Excellence, Hannover Medical School, 30625 Hannover, Germany
| | - Astrid Oberbeck
- Institute
of Clinical Biochemistry, Hannover Medical School, 30625 Hannover, Germany
- REBIRTH
Cluster of Excellence, Hannover Medical School, 30625 Hannover, Germany
| | - Ruth Olmer
- Leibniz
Research Laboratories for Biotechnology and Artificial Organs, Department
of Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School, 30625 Hannover, Germany
- REBIRTH
Cluster of Excellence, Hannover Medical School, 30625 Hannover, Germany
| | - Henning Kempf
- Leibniz
Research Laboratories for Biotechnology and Artificial Organs, Department
of Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School, 30625 Hannover, Germany
- REBIRTH
Cluster of Excellence, Hannover Medical School, 30625 Hannover, Germany
| | - Monica Jara-Avaca
- Leibniz
Research Laboratories for Biotechnology and Artificial Organs, Department
of Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School, 30625 Hannover, Germany
- REBIRTH
Cluster of Excellence, Hannover Medical School, 30625 Hannover, Germany
| | - Andreas Pich
- Institute
of Toxicology, Core Facility Proteomics, Hannover Medical School, 30625 Hannover, Germany
| | - Robert Zweigerdt
- Leibniz
Research Laboratories for Biotechnology and Artificial Organs, Department
of Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School, 30625 Hannover, Germany
- REBIRTH
Cluster of Excellence, Hannover Medical School, 30625 Hannover, Germany
| | - Falk F. R. Buettner
- Institute
of Clinical Biochemistry, Hannover Medical School, 30625 Hannover, Germany
- REBIRTH
Cluster of Excellence, Hannover Medical School, 30625 Hannover, Germany
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45
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Owusu D, Pan Y, Xie C, Harirforoosh S, Wang KS. Polymorphisms in PDLIM5 gene are associated with alcohol dependence, type 2 diabetes, and hypertension. J Psychiatr Res 2017; 84:27-34. [PMID: 27693979 DOI: 10.1016/j.jpsychires.2016.09.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 08/29/2016] [Accepted: 09/15/2016] [Indexed: 12/15/2022]
Abstract
The PDZ and LIM domain 5 (PDLIM5) gene may play a role in alcohol dependence (AD), bipolar disorder, and major depressive disorder; however, no study has identified shared genetic variants within PDLIM5 gene among AD, type 2 diabetes (T2D), and hypertension. This study investigated the association of 72 single nucleotide polymorphism (SNPs) with AD (1066 AD cases and 1278 controls) in the Study of Addiction - Genetics and Environment (SAGE) sample and 47 SNPs with T2D (878 cases and 2686 non-diabetic) and hypertension (825 cases and 2739 non-hypertensive) in the Marshfield sample. Multiple logistic regression models in PLINK software were used to examine the associations of genetic variants with AD, T2D, and hypertension and SNP x alcohol consumption interactions for T2D and hypertension. Twenty-five SNPs were associated with AD in the SAGE sample (p < 0.05); rs1048627 showed the strongest association with AD (p = 5.53 × 10-4). Of the 25 SNPs, 5 SNPs showed associations with both AD in the SAGE sample and T2D in the Marshfield sample (top SNP rs11097432 with p = 0.00107 for T2D and p = 0.0483 for AD) while 6 SNPs showed associations with both AD in the SAGE sample and hypertension in the Marshfield sample (top SNP rs12500426 with p = 0.0119 for hypertension and p = 1.51 × 10-3 for AD). SNP (rs6532496) showed significant interaction with alcohol consumption for hypertension. Our results showed that several genetic variants in PDLIM5 gene influence AD, T2D and hypertension. These findings offer the potential for new insights into the pathogenesis of AD, T2D, and hypertension.
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Affiliation(s)
- Daniel Owusu
- Department of Biostatistics and Epidemiology, College of Public Health, East Tennessee State University, Johnson City, TN 37614, USA
| | - Yue Pan
- Department of Public Health Sciences, Miller School of Medicine, University of Miami, Miami, FL 33136, USA
| | - Changchun Xie
- Division of Biostatistics and Bioinformatics, Department of Environmental Health, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Sam Harirforoosh
- Department of Pharmaceutical Sciences, Gatton College of Pharmacy, East Tennessee State University, Johnson City, TN 37614, USA
| | - Ke-Sheng Wang
- Department of Biostatistics and Epidemiology, College of Public Health, East Tennessee State University, Johnson City, TN 37614, USA.
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Pdlim7 Regulates Arf6-Dependent Actin Dynamics and Is Required for Platelet-Mediated Thrombosis in Mice. PLoS One 2016; 11:e0164042. [PMID: 27792740 PMCID: PMC5085081 DOI: 10.1371/journal.pone.0164042] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Accepted: 09/19/2016] [Indexed: 11/19/2022] Open
Abstract
Upon vessel injury, platelets become activated and rapidly reorganize their actin cytoskeleton to adhere to the site of endothelial damage, triggering the formation of a fibrin-rich plug to prevent further blood loss. Inactivation of Pdlim7 provides the new perspective that regulation of actin cytoskeletal changes in platelets is dependent on the encoded PDZ-LIM protein. Loss-of-function of Pdlim7 triggers hypercoagulopathy and causes significant perinatal lethality in mice. Our in vivo and in vitro studies reveal that Pdlim7 is dynamically distributed along actin fibers, and lack of Pdlim7 leads to a marked inability to rearrange the actin cytoskeleton. Specifically, the absence of Pdlim7 prevents platelets from bundling actin fibers into a concentric ring that defines the round spread shape of activated platelets. Similarly, in mouse embryonic fibroblasts, loss of Pdlim7 abolishes the formation of stress fibers needed to adopt the typical elongated fibroblast shape. In addition to revealing a fundamental cell biological role in actin cytoskeletal organization, we also demonstrate a function of Pdlim7 in regulating the cycling between the GTP/GDP-bound states of Arf6. The small GTPase Arf6 is an essential factor required for actin dynamics, cytoskeletal rearrangements, and platelet activation. Consistent with our findings of significantly elevated initial F-actin ratios and subsequent morphological aberrations, loss of Pdlim7 causes a shift in balance towards an increased Arf6-GTP level in resting platelets. These findings identify a new Pdlim7-Arf6 axis controlling actin dynamics and implicate Pdlim7 as a primary endogenous regulator of platelet-dependent hemostasis.
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47
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Liao KA, González-Morales N, Schöck F. Zasp52, a Core Z-disc Protein in Drosophila Indirect Flight Muscles, Interacts with α-Actinin via an Extended PDZ Domain. PLoS Genet 2016; 12:e1006400. [PMID: 27783625 PMCID: PMC5081203 DOI: 10.1371/journal.pgen.1006400] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Accepted: 10/04/2016] [Indexed: 11/18/2022] Open
Abstract
Z-discs are organizing centers that establish and maintain myofibril structure and function. Important Z-disc proteins are α-actinin, which cross-links actin thin filaments at the Z-disc and Zasp PDZ domain proteins, which directly interact with α-actinin. Here we investigate the biochemical and genetic nature of this interaction in more detail. Zasp52 is the major Drosophila Zasp PDZ domain protein, and is required for myofibril assembly and maintenance. We show by in vitro biochemistry that the PDZ domain plus a C-terminal extension is the only area of Zasp52 involved in the interaction with α-actinin. In addition, site-directed mutagenesis of 5 amino acid residues in the N-terminal part of the PDZ domain, within the PWGFRL motif, abolish binding to α-actinin, demonstrating the importance of this motif for α-actinin binding. Rescue assays of a novel Zasp52 allele demonstrate the crucial importance of the PDZ domain for Zasp52 function. Flight assays also show that a Zasp52 mutant suppresses the α-actinin mutant phenotype, indicating that both proteins are core structural Z-disc proteins required for optimal Z-disc function. Although Zasp PDZ domain proteins are known to bind α-actinin and play a role in muscle assembly and maintenance, the details and importance of this interaction have not been assessed. Here we demonstrate that a conserved motif in the N-terminal part of the Zasp52 PDZ domain is responsible for α-actinin binding and that a C-terminal extension of the PDZ domain is required for optimal α-actinin binding. We show using transgenic animals that in the absence of the PDZ domain no aspect of myofibril assembly can be rescued. Intriguingly, α-actinin/+ heterozygous animals show irregularities in wing beat frequency, which can be suppressed by removing one copy of Zasp52. This suggests that both proteins are required at fixed levels at the Z-disc to support optimal functionality.
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Affiliation(s)
- Kuo An Liao
- Department of Biology, McGill University, 1205 Dr Penfield Avenue, Montreal, Quebec, CANADA
| | | | - Frieder Schöck
- Department of Biology, McGill University, 1205 Dr Penfield Avenue, Montreal, Quebec, CANADA
- * E-mail:
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48
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Law ME, Ferreira RB, Davis BJ, Higgins PJ, Kim JS, Castellano RK, Chen S, Luesch H, Law BK. CUB domain-containing protein 1 and the epidermal growth factor receptor cooperate to induce cell detachment. Breast Cancer Res 2016; 18:80. [PMID: 27495374 PMCID: PMC4974783 DOI: 10.1186/s13058-016-0741-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Accepted: 07/22/2016] [Indexed: 01/01/2023] Open
Abstract
Background While localized malignancies often respond to available therapies, most disseminated cancers are refractory. Novel approaches, therefore, are needed for the treatment of metastatic disease. CUB domain-containing protein1 (CDCP1) plays an important role in metastasis and drug resistance; the mechanism however, is poorly understood. Methods Breast cancer cell lines were engineered to stably express EGFR, CDCP1 or phosphorylation site mutants of CDCP1. These cell lines were used for immunoblot analysis or affinity purification followed by immunoblot analysis to assess protein phosphorylation and/or protein complex formation with CDCP1. Kinase activity was evaluated using phosphorylation site-specific antibodies and immunoblot analysis in in vitro kinase assays. Protein band excision and mass spectrometry was utilized to further identify proteins complexed with CDCP1 or ΔCDCP1, which is a mimetic of the cleaved form of CDCP1. Cell detachment was assessed using cell counting. Results This paper reports that CDCP1 forms ternary protein complexes with Src and EGFR, facilitating Src activation and Src-dependent EGFR transactivation. Importantly, we have discovered that a class of compounds termed Disulfide bond Disrupting Agents (DDAs) blocks CDCP1/EGFR/Src ternary complex formation and downstream signaling. CDCP1 and EGFR cooperate to induce detachment of breast cancer cells from the substratum and to disrupt adherens junctions. Analysis of CDCP1-containing complexes using proteomics techniques reveals that CDCP1 associates with several proteins involved in cell adhesion, including adherens junction and desmosomal cadherins, and cytoskeletal elements. Conclusions Together, these results suggest that CDCP1 may facilitate loss of adhesion by promoting activation of EGFR and Src at sites of cell-cell and cell-substratum contact. Electronic supplementary material The online version of this article (doi:10.1186/s13058-016-0741-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Mary E Law
- Department of Pharmacology and Therapeutics, University of Florida, Acad. Res. Bldg., Room R5-210, 1200 Newell Drive, P.O. Box 100267, Gainesville, FL, 32610, USA.,UF-Health Cancer Center, University of Florida, Gainesville, FL, 32610, USA
| | - Renan B Ferreira
- Department of Chemistry, University of Florida, Gainesville, FL, 32611, USA
| | - Bradley J Davis
- Department of Pharmacology and Therapeutics, University of Florida, Acad. Res. Bldg., Room R5-210, 1200 Newell Drive, P.O. Box 100267, Gainesville, FL, 32610, USA.,UF-Health Cancer Center, University of Florida, Gainesville, FL, 32610, USA
| | - Paul J Higgins
- Center for Cell Biology and Cancer Research, Albany Medical College, Albany, NY, 12208, USA
| | - Jae-Sung Kim
- Department of Surgery, University of Florida, Gainesville, FL, 32610, USA
| | | | - Sixue Chen
- Department of Biology, Interdisciplinary Center for Biotechnology, University of Florida, Gainesville, FL, 32611, USA
| | - Hendrik Luesch
- Department of Medicinal Chemistry, University of Florida, Gainesville, FL, 32610, USA.,Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida, Gainesville, FL, 32610, USA
| | - Brian K Law
- Department of Pharmacology and Therapeutics, University of Florida, Acad. Res. Bldg., Room R5-210, 1200 Newell Drive, P.O. Box 100267, Gainesville, FL, 32610, USA. .,UF-Health Cancer Center, University of Florida, Gainesville, FL, 32610, USA. .,Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida, Gainesville, FL, 32610, USA.
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49
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Ito J, Iijima M, Yoshimoto N, Niimi T, Kuroda S, Maturana AD. RBM20 and RBM24 cooperatively promote the expression of short enh splice variants. FEBS Lett 2016; 590:2262-74. [PMID: 27289039 DOI: 10.1002/1873-3468.12251] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Revised: 04/29/2016] [Accepted: 05/19/2016] [Indexed: 12/31/2022]
Abstract
PDZ-LIM protein ENH1 is a scaffold protein for protein kinases and transcriptional regulators. While ENH1 promotes the hypertrophic growth of cardiomyocytes, its short splice variant (ENH3) prevents the hypertrophic growth. The mechanism underlying the alternative splicing of enh mRNA between ENH short and long isoforms has remained unknown. Here, we found that two splicing factors, RNA-binding motif 20 (RBM20) and RNA-binding motif 24 (RBM24) together promoted the expression of short enh splice variants and bound the 5' intronic region of exon 11 containing an in-phase stop codon. In addition, expression of both RBMs is repressed by hypertrophic stimulations. Collectively, our results suggest that, in healthy conditions, RBM20 and RBM24 cooperate to promote the expression of short ENH isoforms.
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Affiliation(s)
- Jumpei Ito
- Graduate School of Bioagricultural Sciences, Nagoya University, Japan.,Japan Society for the Promotion of Science, Tokyo, Japan
| | - Masumi Iijima
- The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka, Japan
| | - Nobuo Yoshimoto
- The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka, Japan
| | - Tomoaki Niimi
- Graduate School of Bioagricultural Sciences, Nagoya University, Japan
| | - Shun'ichi Kuroda
- Graduate School of Bioagricultural Sciences, Nagoya University, Japan.,The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka, Japan
| | - Andrés D Maturana
- Graduate School of Bioagricultural Sciences, Nagoya University, Japan
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50
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MicroRNA-17-92 regulates myoblast proliferation and differentiation by targeting the ENH1/Id1 signaling axis. Cell Death Differ 2016; 23:1658-69. [PMID: 27315298 PMCID: PMC5041193 DOI: 10.1038/cdd.2016.56] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 05/19/2015] [Accepted: 05/20/2016] [Indexed: 12/21/2022] Open
Abstract
Myogenesis is an important biological process that occurs during both skeletal muscle regeneration and postnatal growth. Growing evidence points to the critical role of microRNAs (miRNAs) in myogenesis. Our analysis of miRNA expression patterns reveal that miRNAs of miR-17-92 cluster are dramatically downregulated in C2C12 cells after myogenesis stimulation, are strongly induced in mouse skeletal muscle after injury and decrease steadily thereafter and are downregulated with age in skeletal muscle during mouse and porcine postnatal growth. However, their roles in muscle developmental processes remain elusive. We show that the miR-17-92 cluster promotes mouse myoblast proliferation but inhibits myotube formation. miR-17, -20a and -92a target the actin-associated protein enigma homolog 1 (ENH1). The silencing of ENH1 increased the nuclear accumulation of the inhibitor of differentiation 1 (Id1) and represses myogenic differentiation. Furthermore, the injection of adenovirus expressing miR-20a into the tibialia anterior muscle downregulates ENH1 and delays regeneration. In addition, the downregulation of miR-17-92 during myogenesis is transcriptionally regulated by E2F1. Overall, our results reveal a E2F1/miR-17-92/ENH1/Id1 regulatory axis during myogenesis.
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