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Wang P, Wang Y, Hu Y, Chen Z, Han L, Zhu W, Tian B, Fang A, Yang Y, Bi C, Yu Y. Plant hypersensitive induced reaction protein facilitates cell death induced by secreted xylanase associated with the pathogenicity of Sclerotinia sclerotiorum. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024; 118:90-105. [PMID: 38113332 DOI: 10.1111/tpj.16593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/27/2023] [Accepted: 12/06/2023] [Indexed: 12/21/2023]
Abstract
Necrotrophic fungal plant pathogens employ cell death-inducing proteins (CDIPs) to facilitate infection. However, the specific CDIPs and their mechanisms in pathogenic processes of Sclerotinia sclerotiorum, a necrotrophic pathogen that causes disease in many economically important crop species, have not yet been clearly defined. This study found that S. sclerotiorum secretes SsXyl2, a glycosyl hydrolase family 11 xylanase, at the late stage of hyphal infection. SsXyl2 targets the apoplast of host plants to induce cell death independent of xylanase activity. Targeted disruption of SsXyl2 leads to serious impairment of virulence, which can be recovered by a catalytically impaired SsXyl2 variant, thus supporting the critical role of cell death-inducing activity of SsXyl2 in establishing successful colonization of S. sclerotiorum. Remarkably, infection by S. sclerotiorum induces the accumulation of Nicotiana benthamiana hypersensitive-induced reaction protein 2 (NbHIR2). NbHIR2 interacts with SsXyl2 at the plasma membrane and promotes its localization to the cell membrane and cell death-inducing activity. Furthermore, gene-edited mutants of NbHIR2 displayed increased resistance to the wild-type strain of S. sclerotiorum, but not to the SsXyl2-deletion strain. Hence, SsXyl2 acts as a CDIP that manipulates host cell physiology by interacting with hypersensitive induced reaction protein to facilitate colonization by S. sclerotiorum. These findings provide valuable insights into the pathogenic mechanisms of CDIPs in necrotrophic pathogens and lead to a more promising approach for breeding resistant crops against S. sclerotiorum.
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Affiliation(s)
- Pei Wang
- College of Plant Protection, Southwest University, Chongqing, 400715, China
| | - Yabo Wang
- College of Plant Protection, Southwest University, Chongqing, 400715, China
| | - Yawen Hu
- College of Plant Protection, Southwest University, Chongqing, 400715, China
| | - Ziyang Chen
- College of Plant Protection, Southwest University, Chongqing, 400715, China
| | - Lili Han
- College of Plant Protection, Southwest University, Chongqing, 400715, China
| | - Wenjun Zhu
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan, Hubei, 430023, China
| | - Binnian Tian
- College of Plant Protection, Southwest University, Chongqing, 400715, China
- Key Laboratory of Agricultural Biosafety and Green Production of Upper Yangtze River, Ministry of Education, Southwest University, Chongqing, 400715, China
| | - Anfei Fang
- College of Plant Protection, Southwest University, Chongqing, 400715, China
- Key Laboratory of Agricultural Biosafety and Green Production of Upper Yangtze River, Ministry of Education, Southwest University, Chongqing, 400715, China
| | - Yuheng Yang
- College of Plant Protection, Southwest University, Chongqing, 400715, China
- Key Laboratory of Agricultural Biosafety and Green Production of Upper Yangtze River, Ministry of Education, Southwest University, Chongqing, 400715, China
| | - Chaowei Bi
- College of Plant Protection, Southwest University, Chongqing, 400715, China
- Key Laboratory of Agricultural Biosafety and Green Production of Upper Yangtze River, Ministry of Education, Southwest University, Chongqing, 400715, China
| | - Yang Yu
- College of Plant Protection, Southwest University, Chongqing, 400715, China
- Key Laboratory of Agricultural Biosafety and Green Production of Upper Yangtze River, Ministry of Education, Southwest University, Chongqing, 400715, China
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Zhang B, Li W, Cao J, Zhou Y, Yuan X. Prohibitin 2: A key regulator of cell function. Life Sci 2024; 338:122371. [PMID: 38142736 DOI: 10.1016/j.lfs.2023.122371] [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: 10/17/2023] [Revised: 12/16/2023] [Accepted: 12/18/2023] [Indexed: 12/26/2023]
Abstract
The PHB2 gene is located on chromosome 12p13 and encodes prohibitin 2, a highly conserved protein of 37 kDa. PHB2 is a dimer with antiparallel coils, possessing a unique negatively charged region crucial for its mitochondrial molecular chaperone functions. Thus, PHB2 plays a significant role in cell life activities such as mitosis, mitochondrial autophagy, signal transduction, and cell death. This review discusses how PHB2 inhibits transcription factors or nuclear receptors to maintain normal cell functions; how PHB2 in the cytoplasm or membrane ensures normal cell mitosis and regulates cell differentiation; how PHB2 affects mitochondrial structure, function, and cell apoptosis through mitochondrial intimal integrity and mitochondrial autophagy; how PHB2 affects mitochondrial stress and inhibits cell apoptosis by regulating cytochrome c migration and other pathways; how PHB2 affects cell growth, proliferation, and metastasis through a mitochondrial independent mechanism; and how PHB2 could be applied in disease treatment. We provide a theoretical basis and an innovative perspective for a comprehensive understanding of the role and mechanism of PHB2 in cell function regulation.
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Affiliation(s)
- Bingjie Zhang
- Gastroenterology and Urology Department II, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan 410013, China; Cancer Research Institute, Basic School of Medicine, Central South University, Changsha, Hunan 410011, China
| | - Wentao Li
- Cancer Research Institute, Basic School of Medicine, Central South University, Changsha, Hunan 410011, China
| | - Jiaying Cao
- Cancer Research Institute, Basic School of Medicine, Central South University, Changsha, Hunan 410011, China
| | - Yanhong Zhou
- Cancer Research Institute, Basic School of Medicine, Central South University, Changsha, Hunan 410011, China.
| | - Xia Yuan
- Gastroenterology and Urology Department II, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan 410013, China.
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Hernández-Lao T, Tienda-Parrilla M, Labella-Ortega M, Guerrero-Sánchez VM, Rey MD, Jorrín-Novo JV, Castillejo-Sánchez MÁ. Proteomic and Metabolomic Analysis of the Quercus ilex-Phytophthora cinnamomi Pathosystem Reveals a Population-Specific Response, Independent of Co-Occurrence of Drought. Biomolecules 2024; 14:160. [PMID: 38397397 PMCID: PMC10887186 DOI: 10.3390/biom14020160] [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] [Revised: 01/18/2024] [Accepted: 01/25/2024] [Indexed: 02/25/2024] Open
Abstract
Holm oak (Quercus ilex) is considered to be one of the major structural elements of Mediterranean forests and the agrosilvopastoral Spanish "dehesa", making it an outstanding example of ecological and socioeconomic sustainability in forest ecosystems. The exotic Phytophthora cinnamomi is one of the most aggressive pathogens of woody species and, together with drought, is considered to be one of the main drivers of holm oak decline. The effect of and response to P. cinnamomi inoculation were studied in the offspring of mother trees from two Andalusian populations, Cordoba and Huelva. At the two locations, acorns collected from both symptomatic (damaged) and asymptomatic (apparently healthy) trees were sampled. Damage symptoms, mortality, and chlorophyll fluorescence were evaluated in seedlings inoculated under humid and drought conditions. The effect and response depended on the population and were more apparent in Huelva than in Cordoba. An integrated proteomic and metabolomic analysis revealed the involvement of different metabolic pathways in response to the pathogen in both populations, including amino acid metabolism pathways in Huelva, and terpenoid and flavonoid biosynthesis in Cordoba. However, no differential response was observed between seedlings inoculated under humid and drought conditions. A protective mechanism of the photosynthetic apparatus was activated in response to defective photosynthetic activity in inoculated plants, which seemed to be more efficient in the Cordoba population. In addition, enzymes and metabolites of the phenylpropanoid and flavonoid biosynthesis pathways may have conferred higher resistance in the Cordoba population. Some enzymes are proposed as markers of resilience, among which glyoxalase I, glutathione reductase, thioredoxin reductase, and cinnamyl alcohol dehydrogenase are candidates.
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Affiliation(s)
| | | | | | | | | | - Jesús V. Jorrín-Novo
- Agroforestry and Plant Biochemistry, Proteomics and Systems Biology, Department of Biochemistry and Molecular Biology, University of Cordoba, UCO-CeiA3, 14014 Cordoba, Spain; (T.H.-L.); (M.T.-P.); (M.L.-O.); (V.M.G.-S.); (M.-D.R.)
| | - María Ángeles Castillejo-Sánchez
- Agroforestry and Plant Biochemistry, Proteomics and Systems Biology, Department of Biochemistry and Molecular Biology, University of Cordoba, UCO-CeiA3, 14014 Cordoba, Spain; (T.H.-L.); (M.T.-P.); (M.L.-O.); (V.M.G.-S.); (M.-D.R.)
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Kersten R, Trampert DC, Hubers LM, Tolenaars D, Vos HR, van de Graaf SFJ, Beuers U. Galectin-3 and prohibitin 1 are autoantigens in IgG4-related cholangitis without clear-cut protective effects against toxic bile acids. Front Immunol 2024; 14:1251134. [PMID: 38332916 PMCID: PMC10851949 DOI: 10.3389/fimmu.2023.1251134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 12/15/2023] [Indexed: 02/10/2024] Open
Abstract
Background and aims IgG4-related cholangitis (IRC) is the hepatobiliary manifestation of IgG4-related disease, a systemic B cell-driven fibro-inflammatory disorder. Four autoantigens have recently been described in IgG4-RD: annexin A11, galectin-3, laminin 511-E8, and prohibitin 1. We have previously reported a protective role of annexin A11 and laminin 511-E8 in human cholangiocytes against toxic bile acids. Here, we explored the potentially protective role of the carbohydrate-binding lectin galectin-3 and the scaffold proteins prohibitins 1 and 2. Methods Anti-galectin-3, anti-prohibitin 1 and 2 autoantibody positivity in IRC and healthy and disease (primary sclerosing cholangitis (PSC)) control sera was assessed by ELISA/liquid chromatography-tandem mass spectrometry (LC-MS/MS). Human H69 cholangiocytes were subjected to short hairpin RNA (shRNA) knockdown targeting galectin-3 (LGALS3), prohibitin 1 (PHB1), and prohibitin 2 (PHB2). H69 cholangiocytes were also exposed to recombinant galectin-3, the inhibitor GB1107, recombinant prohibitin 1, and the pan-prohibitin inhibitor rocaglamide. Protection against bile acid toxicity was assessed by intracellular pH (pHi) measurements using BCECF-AM, 22,23-3H-glycochenodeoxycholic acid (3H-GCDC) influx, and GCDC-induced apoptosis using Caspase-3/7 assays. Results Anti-galectin-3 autoantibodies were detected in 13.5% of individuals with IRC but not in PSC. Knockdown of LGALS3 and galectin-3 inhibition with GB1107 did not affect pHi, whereas recombinant galectin-3 incubation lowered pHi. LGALS3 knockdown increased GCDC-influx but not GCDC-induced apoptosis. GB1107 reduced GCDC-influx and GCDC-induced apoptosis. Recombinant galectin-3 tended to decrease GCDC-influx and GCDC-induced apoptosis. Anti-prohibitin 1 autoantibodies were detected in 61.5% and 35.7% of individuals with IRC and PSC, respectively. Knockdown of PHB1, combined PHB1/2 KD, treatment with rocaglamide, and recombinant prohibitin 1 all lowered pHi. Knockdown of PHB1, PHB2, or combined PHB1/2 did not alter GCDC-influx, yet knockdown of PHB1 increased GCDC-induced apoptosis. Conversely, rocaglamide reduced GCDC-influx but did not attenuate GCDC-induced apoptosis. Recombinant prohibitin 1 did not affect GCDC-influx or GCDC-induced apoptosis. Finally, anti-galectin-3 and anti-prohibitin 1 autoantibody pretreatment did not lead to increased GCDC-influx. Conclusions A subset of individuals with IRC have autoantibodies against galectin-3 and prohibitin 1. Gene-specific knockdown, pharmacological inhibition, and recombinant protein substitution did not clearly disclose a protective role of these autoantigens in human cholangiocytes against toxic bile acids. The involvement of these autoantibodies in processes surpassing epithelial secretion remains to be elucidated.
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Affiliation(s)
- Remco Kersten
- Tytgat Institute for Liver and Intestinal Research, Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology Endocrinology Metabolism (AGEM), Amsterdam University Medical Center (UMC), University of Amsterdam, Amsterdam, Netherlands
| | - David C. Trampert
- Tytgat Institute for Liver and Intestinal Research, Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology Endocrinology Metabolism (AGEM), Amsterdam University Medical Center (UMC), University of Amsterdam, Amsterdam, Netherlands
| | - Lowiek M. Hubers
- Tytgat Institute for Liver and Intestinal Research, Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology Endocrinology Metabolism (AGEM), Amsterdam University Medical Center (UMC), University of Amsterdam, Amsterdam, Netherlands
| | - Dagmar Tolenaars
- Tytgat Institute for Liver and Intestinal Research, Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology Endocrinology Metabolism (AGEM), Amsterdam University Medical Center (UMC), University of Amsterdam, Amsterdam, Netherlands
| | - Harmjan R. Vos
- Oncode Institute and Molecular Cancer Research, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht, Netherlands
| | - Stan F. J. van de Graaf
- Tytgat Institute for Liver and Intestinal Research, Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology Endocrinology Metabolism (AGEM), Amsterdam University Medical Center (UMC), University of Amsterdam, Amsterdam, Netherlands
| | - Ulrich Beuers
- Tytgat Institute for Liver and Intestinal Research, Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology Endocrinology Metabolism (AGEM), Amsterdam University Medical Center (UMC), University of Amsterdam, Amsterdam, Netherlands
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5
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Abbas F, Yu Y, Bendahmane M, Wang HC. Plant volatiles and color compounds: From biosynthesis to function. PHYSIOLOGIA PLANTARUM 2023; 175:e13947. [PMID: 37357979 DOI: 10.1111/ppl.13947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 06/05/2023] [Indexed: 06/27/2023]
Affiliation(s)
- Farhat Abbas
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops-South China/Guangdong Litchi Engineering Research Center, College of Horticulture, South China Agricultural University, Guangzhou, China
| | - Yixun Yu
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops-South China/Guangdong Litchi Engineering Research Center, College of Horticulture, South China Agricultural University, Guangzhou, China
| | - Mohammed Bendahmane
- Laboratoire Reproduction et Development des Plantes, INRA-CNRS-Lyon1-ENS, Ecole Normale Supérieure de Lyon, Lyon, France
| | - Hui-Cong Wang
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops-South China/Guangdong Litchi Engineering Research Center, College of Horticulture, South China Agricultural University, Guangzhou, China
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Guo R, Su Y, Zhang Q, Xiu B, Huang S, Chi W, Zhang L, Li L, Hou J, Wang J, Chen J, Chi Y, Xue J, Wu J. LINC00478-derived novel cytoplasmic lncRNA LacRNA stabilizes PHB2 and suppresses breast cancer metastasis via repressing MYC targets. J Transl Med 2023; 21:120. [PMID: 36782197 PMCID: PMC9926633 DOI: 10.1186/s12967-023-03967-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 02/04/2023] [Indexed: 02/15/2023] Open
Abstract
BACKGROUND Metastasis is the predominant cause of mortality in patients with breast cancer. Long noncoding RNAs (lncRNAs) have been shown to drive important phenotypes in tumors, including invasion and metastasis. However, the lncRNAs involved in metastasis and their molecular and cellular mechanisms are still largely unknown. METHODS The transcriptional and posttranscriptional processing of LINC00478-associated cytoplasmic RNA (LacRNA) was determined by RT-qPCR, semiquantitative PCR and 5'/3' RACE. Paired-guide CRISPR/cas9 and CRISPR/dead-Cas9 systems was used to knock out or activate the expression of LacRNA. Cell migration and invasion assay was performed to confirm the phenotype of LacRNA. Tail vein model and mammary fat pad model were used for in vivo study. The LacRNA-PHB2-cMyc axis were screened and validated by RNA pulldown, mass spectrometry, RNA immunoprecipitation and RNA-seq assays. RESULTS Here, we identified a novel cytoplasmic lncRNA, LacRNA (LINC00478-associated cytoplasmic RNA), derived from nucleus-located lncRNA LINC00478. The nascent transcript of LINC00478 full-length (LINC00478_FL) was cleaved and polyadenylated, simultaneously yielding 5' ends stable expressing LacRNA, which is released into the cytoplasm, and long 3' ends of nuclear-retained lncRNA. LINC00478_3'RNA was rapidly degraded. LacRNA significantly inhibited breast cancer invasion and metastasis in vitro and in vivo. Mechanistically, LacRNA physically interacted with the PHB domain of PHB2 through its 61-140-nt region. This specific binding affected the formation of the autophagy degradation complex of PHB2 and LC3, delaying the degradation of the PHB2 protein. Unexpectedly, LacRNA specifically interacted with PHB2, recruited c-Myc and promoted c-Myc ubiquitination and degradation. The negatively regulation of Myc signaling ultimately inhibited breast cancer metastasis. Furthermore, LacRNA and LacRNA-mediated c-Myc signaling downregulation are significantly associated with good clinical outcomes, take advantage of these factors we constructed a prognostic predict model. CONCLUSION Therefore, our findings propose LacRNA as a potential prognostic biomarker and a new therapeutic strategy.
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Affiliation(s)
- Rong Guo
- grid.452404.30000 0004 1808 0942Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032 People’s Republic of China ,Department of Breast Surgery, The Third Affiliated Hospital of Kunming Medical University, Yunnan Cancer Hospital, Kunming, 650000 People’s Republic of China ,grid.11841.3d0000 0004 0619 8943Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032 People’s Republic of China
| | - Yonghui Su
- grid.452404.30000 0004 1808 0942Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032 People’s Republic of China ,grid.11841.3d0000 0004 0619 8943Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032 People’s Republic of China
| | - Qi Zhang
- grid.452404.30000 0004 1808 0942Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032 People’s Republic of China ,grid.11841.3d0000 0004 0619 8943Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032 People’s Republic of China
| | - Bingqiu Xiu
- grid.452404.30000 0004 1808 0942Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032 People’s Republic of China ,grid.11841.3d0000 0004 0619 8943Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032 People’s Republic of China
| | - Sheng Huang
- grid.452404.30000 0004 1808 0942Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032 People’s Republic of China ,Department of Breast Surgery, The Third Affiliated Hospital of Kunming Medical University, Yunnan Cancer Hospital, Kunming, 650000 People’s Republic of China ,grid.11841.3d0000 0004 0619 8943Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032 People’s Republic of China
| | - Weiru Chi
- grid.452404.30000 0004 1808 0942Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032 People’s Republic of China ,grid.11841.3d0000 0004 0619 8943Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032 People’s Republic of China
| | - Liyi Zhang
- grid.452404.30000 0004 1808 0942Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032 People’s Republic of China ,grid.11841.3d0000 0004 0619 8943Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032 People’s Republic of China
| | - Lun Li
- grid.452404.30000 0004 1808 0942Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032 People’s Republic of China ,grid.11841.3d0000 0004 0619 8943Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032 People’s Republic of China
| | - Jianjing Hou
- grid.452404.30000 0004 1808 0942Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032 People’s Republic of China ,grid.11841.3d0000 0004 0619 8943Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032 People’s Republic of China
| | - Jia Wang
- grid.452404.30000 0004 1808 0942Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032 People’s Republic of China ,grid.11841.3d0000 0004 0619 8943Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032 People’s Republic of China
| | - Jiajian Chen
- grid.452404.30000 0004 1808 0942Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032 People’s Republic of China ,grid.11841.3d0000 0004 0619 8943Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032 People’s Republic of China
| | - Yayun Chi
- Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, People's Republic of China. .,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, People's Republic of China.
| | - Jingyan Xue
- Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, People's Republic of China. .,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, People's Republic of China.
| | - Jiong Wu
- Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, People's Republic of China. .,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, People's Republic of China.
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Kumar R, Dasgupta I. Geminiviral C4/AC4 proteins: An emerging component of the viral arsenal against plant defence. Virology 2023; 579:156-168. [PMID: 36693289 DOI: 10.1016/j.virol.2023.01.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Revised: 12/26/2022] [Accepted: 01/08/2023] [Indexed: 01/12/2023]
Abstract
Virus infection triggers a plethora of defence reactions in plants to incapacitate the intruder. Viruses, in turn, have added additional functions to their genes so that they acquire capabilities to neutralize the above defence reactions. In plant-infecting viruses, the family Geminiviridae comprises members, majority of whom encode 6-8 genes in their small single-stranded DNA genomes. Of the above genes, one which shows the most variability in its amino acid sequence is the C4/AC4. Recent studies have uncovered evidence, which point towards a wide repertoire of functions performed by C4/AC4 revealing its role as a major player in suppressing plant defence. This review summarizes the various plant defence mechanisms against viruses and highlights how C4/AC4 has evolved to counter most of them.
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Affiliation(s)
- Rohit Kumar
- Department of Plant Molecular Biology, University of Delhi South Campus, Benito Juarez Road, New Delhi, 110021, India
| | - Indranil Dasgupta
- Department of Plant Molecular Biology, University of Delhi South Campus, Benito Juarez Road, New Delhi, 110021, India.
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Transcriptomic Analysis of Radish (Raphanus sativus L.) Roots with CLE41 Overexpression. PLANTS 2022; 11:plants11162163. [PMID: 36015466 PMCID: PMC9416626 DOI: 10.3390/plants11162163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 08/02/2022] [Accepted: 08/18/2022] [Indexed: 11/16/2022]
Abstract
The CLE41 peptide, like all other TRACHEARY ELEMENT DIFFERENTIATION INHIBITORY FACTOR (TDIF) family CLE peptides, promotes cell division in (pro-)cambium vascular meristem and prevents xylem differentiation. In this work, we analyzed the differential gene expression in the radish primary-growing P35S:RsCLE41-1 roots using the RNA-seq. Our analysis of transcriptomic data revealed a total of 62 differentially expressed genes between transgenic radish roots overexpressing the RsCLE41-1 gene and the glucuronidase (GUS) gene. For genes associated with late embryogenesis, response to abscisic acid and auxin-dependent xylem cell fate determination, an increase in the expression in P35S:RsCLE41-1 roots was found. Among those downregulated, stress-associated genes prevailed. Moreover, several genes involved in xylem specification were also downregulated in the roots with RsCLE41-1 overexpression. Unexpectedly, none of the well-known targets of TDIFs, such as WOX4 and WOX14, were identified as DEGs in our experiment. Herein, we discuss a suggestion that the activation of pathways associated with desiccation resistance, which are more characteristic of late embryogenesis, in roots with RsCLE41-overexpression may be a consequence of water deficiency onset due to impaired vascular specification.
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9
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Huang F, Abbas F, Fiaz S, Imran M, Yanguo K, Hassan W, Ashraf U, He Y, Cai X, Wang Z, Yu L, Ye X, Chen X. Comprehensive characterization of Guanosine monophosphate synthetase in Nicotiana tabacum. Mol Biol Rep 2022; 49:5265-5272. [PMID: 34689282 DOI: 10.1007/s11033-021-06718-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 09/27/2021] [Indexed: 02/06/2023]
Abstract
BACKGROUND Guanosine monophosphate (GMP) synthetase is an enzyme that converts xanthosine monophosphate to GMP. GMP plays an essential role in plant development and responses to internal and external stimuli. It also plays a crucial role in several plant physiochemical processes, such as stomata closure, cation flux regulation, pathogen responses and chloroplast development. METHODS AND RESULTS The mRNA sequences of NtGMP synthase in tobacco (Nicotiana tabacum) were rapidly amplified from cDNA. The GMP synthase open reading frame contains a 1617 bp sequence encoding 538 amino acids. A sequence analysis showed that this sequence shares high homology with that of Nicotiana sylvestris, Nicotiana attenuata, N. tomentosiformis, Solanum tuberosum, Lycopersicon pennellii, L. esculentum, Capsicum annuum, C. chinense and C. baccatum GMP synthase. A BLAST analysis with a tobacco high-throughput genomic sequence database revealed that the tobacco GMP synthase gene has five introns and six exons. A phylogenetic analysis showed a close genetic evolutionary relationship with N. sylvestris GMP synthase. The tissue-specific expression profile was evaluated using quantitative real-time PCR. The data showed that NtGMP synthase was highly expressed in leaves and moderately expressed in roots, flowers, and stems. The subcellular localization was predicted using the WOLF PSORT webserver, which strongly suggested that it might be localized to the cytoplasm. CONCLUSIONS In the current study, we cloned and comprehensively characterized GMP synthase in tobacco (Nicotiana tabacum). Our results establish a basis for further research to explore the precise role of this enzyme in tobacco.
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Affiliation(s)
- Feiyan Huang
- College of Agriculture and Life Sciences, Yunnan Urban Agricultural Engineering & Technological Research Center, Kunming University, Kunming, China
| | - Farhat Abbas
- The Research Center for Ornamental Plants, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, 510642, China
| | - Sajid Fiaz
- Department of Plant Breeding and Genetics, University of Haripur, Khyber Pakhtunkhwa, Pakistan
| | - Muhammad Imran
- Department of Crop Science and Technology, College of Agriculture, South China Agricultural University, Guangzhou, 510642, China
| | - Ke Yanguo
- College of Agriculture and Life Sciences, Yunnan Urban Agricultural Engineering & Technological Research Center, Kunming University, Kunming, China.
- College of Economics and Management, Kunming University, Kunming, China.
| | - Waseem Hassan
- Institute of Environment and Sustainable Development in Agricultural, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Umair Ashraf
- Department of Botany, Division of Science and Technology, University of Education Lahore, Punjab, Pakistan
| | - Yuansheng He
- Lincang Tobacco Corporation of Yunnan Province, Kunming, China
| | - Xuanjie Cai
- Material Procurement Center, Shanghai Tobacco Group Co., Ltd, Shanghai, 200082, China
| | - Zhijiang Wang
- Kunming Tobacco Corporation of Yunnan Province, Kunming, 650021, China
| | - Lei Yu
- College of Agriculture and Life Sciences, Yunnan Urban Agricultural Engineering & Technological Research Center, Kunming University, Kunming, China
| | - Xianwen Ye
- Kunming Tobacco Corporation of Yunnan Province, Kunming, 650021, China.
| | - Xiaolong Chen
- Tobacco Leaf Technology Centre, China Tobacco Henan Industrial Co., Ltd, Zhengzhou, 450000, China.
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Wang X, Jin S, Chang X, Li G, Zhang L, Jin S. Two interaction proteins between AtPHB6 and AtSOT12 regulate plant salt resistance through ROS signaling. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 169:70-80. [PMID: 34773804 DOI: 10.1016/j.plaphy.2021.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 10/12/2021] [Accepted: 11/02/2021] [Indexed: 06/13/2023]
Abstract
In the past, the PHB gene function was mainly focused on anti-cell proliferation and antitumor effects. But the molecular mechanism of the PHB gene regarding saline and oxidative stresses is unclear. To study the role of AtPHB6 in salt and oxidative stress, AtPHB6 was cloned from A. thaliana. Bioinformatics analysis showed that AtPHB6 was closely related to AtPHB1 and AtPHB2, which are both type II PHB. RT-qPCR results indicated that the AtPHB6 in the leaves and roots of A. thaliana was obviously induced under different stress treatments. AtPHB6-overexpressing plants were larger and more lush than wild-type and mutant plants when placed under stress treatments during seed germination. The root length and fresh weight of AtPHB6 transgenic plants showed the best resistance compared to wild-type plants under different treatments, in contrast, the AtPHB6 mutants had the worst resistance during the seedling stage. AtSOT12 was an interacting protein of AtPHB6, which screened by yeast two-hybrid system. The interaction between the two proteins were further confirmed using in vitro pull-down experiments and in vivo BiFC experiments. Subcellular localization showed both AtPHB6 and AtSOT12 protein expressed in the nucleus and cytoplasm. The H2O2 content in both the transgenic AtPHB6 and AtSOT12 plants were lower than that in the wild type under stresses. Thus, AtPHB6 increased plant resistance to salt stress and interacted with the AtSOT12 protein.
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Affiliation(s)
- Xiaolu Wang
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, 150040, China
| | - Shengxuan Jin
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, 150040, China; College of Forestry, Northeast Forestry University, Harbin, 150040, China
| | - Xu Chang
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, 150040, China
| | - Guanrong Li
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, 150040, China
| | - Ling Zhang
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, 150040, China
| | - Shumei Jin
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, 150040, China.
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11
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Sun Y, Ruan X, Wang Q, Zhou Y, Wang F, Ma L, Wang Z, Gao X. Integrated Gene Co-expression Analysis and Metabolites Profiling Highlight the Important Role of ZmHIR3 in Maize Resistance to Gibberella Stalk Rot. FRONTIERS IN PLANT SCIENCE 2021; 12:664733. [PMID: 34046051 PMCID: PMC8144520 DOI: 10.3389/fpls.2021.664733] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 03/25/2021] [Indexed: 05/04/2023]
Abstract
Gibberella stalk rot (GSR) caused by Fusarium graminearum is one of the most devastating diseases causing significant yield loss of maize, and GSR resistance is a quantitative trait controlled by multiple genes. Although a few quantitative trait loci/resistance genes have been identified, the molecular mechanisms underlying GSR resistance remain largely unexplored. To identify potential resistance genes and to better understand the molecular mechanism of GSR resistance, a joint analysis using a comparative transcriptomic and metabolomic approaches was conducted using two inbred lines with contrasting GSR resistance, K09 (resistant) and A08 (susceptible), upon infection with F. graminearum. While a substantial number of differentially expressed genes associated with various defense-related signaling pathways were identified between two lines, multiple hub genes likely associated with GSR resistance were pinpointed using Weighted Gene Correlation Network Analysis and K-means clustering. Moreover, a core set of metabolites, including anthocyanins, associated with the hub genes was determined. Among the complex co-expression networks, ZmHIR3 showed strong correlation with multiple key genes, and genetic and histological studies showed that zmhir3 mutant is more susceptible to GSR, accompanied by enhanced cell death in the stem in response to infection with F. graminearum. Taken together, our study identified differentially expressed key genes and metabolites, as well as co-expression networks associated with distinct infection stages of F. graminearum. Moreover, ZmHIR3 likely plays a positive role in disease resistance to GSR, probably through the transcriptional regulation of key genes, functional metabolites, and the control of cell death.
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Affiliation(s)
- Yali Sun
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
- Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, China
- College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Xinsen Ruan
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
- Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, China
- College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Qing Wang
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
- Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, China
- College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Yu Zhou
- College of Agriculture, Northeast Agricultural University, Harbin, China
| | - Fang Wang
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
- Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, China
- College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Liang Ma
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
- Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, China
- College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Zhenhua Wang
- College of Agriculture, Northeast Agricultural University, Harbin, China
| | - Xiquan Gao
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
- Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, China
- College of Agriculture, Nanjing Agricultural University, Nanjing, China
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12
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Huang F, Ye X, Wang Z, Ding Y, Cai X, Yu L, Waseem M, Abbas F, Ashraf U, Chen X, Ke Y. The prohibitins (PHB) gene family in tomato: Bioinformatic identification and expression analysis under abiotic and phytohormone stresses. GM CROPS & FOOD 2021; 12:535-550. [PMID: 33678114 PMCID: PMC8820253 DOI: 10.1080/21645698.2021.1872333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The prohibitins (PHB) are SPFH domain-containing proteins found in the prokaryotes to eukaryotes. The plant PHBs are associated with a wide range of biological processes, including senescence, development, and responses to biotic and abiotic stresses. The PHB proteins are identified and characterized in the number of plant species, such as Arabidopsis, rice, maize, and soybean. However, no systematic identification of PHB proteins was performed in Solanum lycopersicum. In this study, we identified 16 PHB proteins in the tomato genome. The analysis of conserved motifs and gene structure validated the phylogenetic classification of tomato PHB proteins. It was observed that various members of tomato PHB proteins undergo purifying selection based on the Ka/Ks ratio and are targeted by four families of miRNAs. Moreover, SlPHB proteins displayed a very unique expression pattern in different plant parts including fruits at various development stages. It was found that SlPHBs processed various development-related and phytohormone responsive cis-regulatory elements in their promoter regions. Furthermore, the exogenous phytohormones treatments (Abscisic acid, indole-3-acetic acid, gibberellic acid, methyl jasmonate) salt and drought stresses induce the expression of SlPHB. Moreover, the subcellular localization assay revealed that SlPHB5 and SlPHB10 were located in the mitochondria. This study systematically summarized the general characterization of SlPHBs in the tomato genome and provides a foundation for the functional characterization of PHB genes in tomato and other plant species.
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Affiliation(s)
- Feiyan Huang
- College of Agriculture and Life Sciences, Yunnan Urban Agricultural Engineering & Technological Research Center, Kunming University Kunming, China
| | - Xianwen Ye
- Kunming Tobacco Corporation of Yunnan Province, Kunming, China
| | - Zhijiang Wang
- Kunming Tobacco Corporation of Yunnan Province, Kunming, China
| | - Yan Ding
- Material Procurement Center, Shanghai Tobacco Group Co., Ltd, Shanghai, China
| | - Xianjie Cai
- Material Procurement Center, Shanghai Tobacco Group Co., Ltd, Shanghai, China
| | - Lei Yu
- College of Agriculture and Life Sciences, Yunnan Urban Agricultural Engineering & Technological Research Center, Kunming University Kunming, China
| | - Muhammad Waseem
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Horticulture, South China Agricultural University, Guangzhou, China
| | - Farhat Abbas
- The Research Center for Ornamental Plants, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Umair Ashraf
- Department of Botany, Division of Science and Technology, University of Education, Lahore, Pakistan
| | - Xiaolong Chen
- Tobacco Leaf Purchase Center, China Tobacco Henan Industrial Co., Ltd, Zhengzhou, China
| | - Yanguo Ke
- College of Economics and Management, Kunming University, Kunming, China
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13
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Cao YY, Ba HX, Li Y, Tang SY, Luo ZQ, Li XH. Regulatory effects of Prohibitin 1 on proliferation and apoptosis of pulmonary arterial smooth muscle cells in monocrotaline-induced PAH rats. Life Sci 2020; 250:117548. [PMID: 32173312 DOI: 10.1016/j.lfs.2020.117548] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 03/11/2020] [Accepted: 03/11/2020] [Indexed: 01/08/2023]
Abstract
BACKGROUND Pulmonary arterial hypertension (PAH) is a severe pulmonary vascular disease characterized by unbalanced proliferation and apoptosis of pulmonary arterial smooth muscle cells (PASMCs). Prohibitin 1 (PHB1) is known for its significant anti-proliferative activity. However, the role of PHB1 in PASMCs and PAH have not been elucidated. METHODS Monocrotaline (MCT 60 mg/kg) was used to build a PAH model in SD rats. Right ventricular systolic pressure (RVSP) and right ventricle (RV) hypertrophy were measured. Morphology of pulmonary vessels was observed by Hematoxylin-Eosin (HE) staining. Expression of PHB1 in pulmonary arteries and PASMCs was determinated by immunoblot and immunofluorescence. Cell proliferation was detected by CCK8 and EDU when PASMCs were stimulated by PDGF-BB (20 ng/mL). Furthermore, siRNA for PHB1 and Akt inhibitor were conducted to investigate the mechanism behind the role of PHB1 and AKT signaling pathway in PASMCs proliferation and apoptosis. RESULTS The protein expression of PHB1 in PAH rats lung tissue was significantly up-regulated accompanied by elevated RVSP and enhanced RV hypertrophy. Immunohistochemistry showed that PHB1 was mainly localized in the pulmonary vascular smooth muscle layer. PDGF-BB significantly up-regulated the expression of PHB1 in rat primary PASMCs in a time- and dose-dependent manner. After PHB1 knock down, PASMCs proliferation was significantly suppressed while apoptosis was significantly recovered. Meanwhile the level of proliferating cell nuclear antigen (PCNA) and P-Akt were significantly down-regulated. Perifosine (Akt inhibitor) also significantly inhibit proliferation of PASMCs. CONCLUSION PHB1 contributes to pulmonary vascular remodeling by accelerating proliferation of PASMCs which involves AKT phosphorylation.
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Affiliation(s)
- Yuan-Yuan Cao
- Department of Pharmacology, Xiangya School of Pharmaceutical Science, Central South University, Changsha 410013, China
| | - Hui-Xue Ba
- Department of Pharmacology, Xiangya School of Pharmaceutical Science, Central South University, Changsha 410013, China
| | - Ying Li
- Department of Health Management, The Third Xiangya Hospital, Central South University, Changsha 410013, China.
| | - Si-Yuan Tang
- Xiangya Nursing School, Central South University, Changsha 410013, China
| | - Zi-Qiang Luo
- Department of Physiology, Xiangya School of Medicine, Central South University, Changsha 410013, China
| | - Xiao-Hui Li
- Department of Pharmacology, Xiangya School of Pharmaceutical Science, Central South University, Changsha 410013, China; Hunan Key Laboratory for Bioanalysis of Complex Matrix Samples, Changsha 411000, China.
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14
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Mei Y, Ma Z, Wang Y, Zhou X. Geminivirus C4 antagonizes the HIR1-mediated hypersensitive response by inhibiting the HIR1 self-interaction and promoting degradation of the protein. THE NEW PHYTOLOGIST 2020; 225:1311-1326. [PMID: 31537050 DOI: 10.1111/nph.16208] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2019] [Accepted: 09/13/2019] [Indexed: 05/13/2023]
Abstract
Tomato leaf curl Yunnan virus (TLCYnV)-encoded C4 protein induces the upregulation of the hypersensitive induced reaction 1 (HIR1) gene but interferes with the HIR1-mediated hypersensitive response (HR). HIR1 self-interaction is essential for the HIR1-induced HR. TLCYnV C4 impairs the HIR1 self-interaction and concomitantly increases the amount of Leucine-Rich Repeat protein 1 (LRR1), a modulator of HIR1, which binds to HIR1. LRR1 promotes the degradation of HIR1, compromising the HIR1-mediated HR. This study provides new insights into the mechanisms employed by a viral protein to counter host resistance through the cooption of the host regulatory system.
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Affiliation(s)
- Yuzhen Mei
- State Key Laboratory of Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Zhonghua Ma
- State Key Laboratory of Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Yaqin Wang
- State Key Laboratory of Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Xueping Zhou
- State Key Laboratory of Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, Zhejiang, 310058, China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
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15
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Yu M, Cui Y, Zhang X, Li R, Lin J. Organization and dynamics of functional plant membrane microdomains. Cell Mol Life Sci 2020; 77:275-287. [PMID: 31422442 PMCID: PMC11104912 DOI: 10.1007/s00018-019-03270-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 07/29/2019] [Accepted: 08/09/2019] [Indexed: 02/07/2023]
Abstract
Plasma membranes are heterogeneous and laterally compartmentalized into distinct microdomains. These membrane microdomains consist of special lipids and proteins and are thought to act as signaling platforms. In plants, membrane microdomains have been detected by super-resolution microscopy, and there is evidence that they play roles in several biological processes. Here, we review current knowledge about the lipid and protein components of membrane microdomains. Furthermore, we summarize the dynamics of membrane microdomains in response to different stimuli. We also explore the biological functions associated with membrane microdomains as signal integration hubs. Finally, we outline challenges and questions for further studies.
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Affiliation(s)
- Meng Yu
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, 100083, China
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
| | - Yaning Cui
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
| | - Xi Zhang
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
| | - Ruili Li
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, 100083, China.
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China.
| | - Jinxing Lin
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, 100083, China.
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China.
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16
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Raut GK, Chakrabarti M, Pamarthy D, Bhadra MP. Glucose starvation-induced oxidative stress causes mitochondrial dysfunction and apoptosis via Prohibitin 1 upregulation in human breast cancer cells. Free Radic Biol Med 2019; 145:428-441. [PMID: 31614178 DOI: 10.1016/j.freeradbiomed.2019.09.020] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 09/12/2019] [Accepted: 09/20/2019] [Indexed: 12/13/2022]
Abstract
In recent years there has been an upsurge in research focusing on reprogramming cancer cells through understanding of their metabolic signatures. Alterations in mitochondrial bioenergetics and impaired mitochondrial function may serve as effective targeting strategies especially in triple-negative breast cancers (TNBCs) where hormone receptors and endocrine therapy are absent. Glucose starvation (GS) of MDA-MB-231 and MCF-7 breast cancer cells showed decrease in mitochondrial Oxygen Consumption Rate (OCR), which was rescuable to control level through addition of exogenous antioxidant N-Acetyl Cysteine (NAC). Mechanistically, GS led to increase in mitochondrial ROS and upregulation of the pleiotropic protein, Prohibitin 1 (PHB1), leading to its dissociation from Dynamin-related protein 1 (DRP1), perturbance of mitochondrial membrane potential (MMP) and triggering of the apoptosis cascade. PHB1 also reduced the invasive and migratory potential of both cell lines. We emphasize that glucose starvation remarkably sensitized the highly glycolytic metastatic TNBC cell line, MDA-MB-231 to apoptosis and decreased its migratory potential. Based on our findings, additional TNBC cell lines can be evaluated and a nutritional paradigm be proposed for anticancer therapy.
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Affiliation(s)
- Ganesh Kumar Raut
- Applied Biology Department, CSIR-Indian Institute of Chemical Technology, Uppal Road, Hyderabad, 500007, Telangana State, India; Academy of Scientific and Innovative Research (AcSIR), Training and Development Complex, CSIR Campus, CSIR Road, Taramani, Chennai, 600 113, India
| | - Moumita Chakrabarti
- Applied Biology Department, CSIR-Indian Institute of Chemical Technology, Uppal Road, Hyderabad, 500007, Telangana State, India; Academy of Scientific and Innovative Research (AcSIR), Training and Development Complex, CSIR Campus, CSIR Road, Taramani, Chennai, 600 113, India
| | - Deepika Pamarthy
- Applied Biology Department, CSIR-Indian Institute of Chemical Technology, Uppal Road, Hyderabad, 500007, Telangana State, India; Academy of Scientific and Innovative Research (AcSIR), Training and Development Complex, CSIR Campus, CSIR Road, Taramani, Chennai, 600 113, India
| | - Manika Pal Bhadra
- Applied Biology Department, CSIR-Indian Institute of Chemical Technology, Uppal Road, Hyderabad, 500007, Telangana State, India; Academy of Scientific and Innovative Research (AcSIR), Training and Development Complex, CSIR Campus, CSIR Road, Taramani, Chennai, 600 113, India.
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17
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Huang R, Yang C, Zhang S. The Arabidopsis PHB3 is a pleiotropic regulator for plant development. PLANT SIGNALING & BEHAVIOR 2019; 14:1656036. [PMID: 31429630 PMCID: PMC6804698 DOI: 10.1080/15592324.2019.1656036] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 08/08/2019] [Indexed: 06/01/2023]
Abstract
Prohibitins (PHBs) are composed of an obviously conserved protein family in eukaryotic cells. Despite the extensive and in-depth research of mammalian PHB1 and PHB2, the plant prohibitins functions are not completely elucidated and little is known about their mechanism of action. This review focuses on the current knowledge about the protein subcellular localization, interaction proteins and target genes of PHB3. Furthermore, we discussed the roles of PHB3 protein in plant growth and development, plant responses to abiotic or biotic stresses and its participation in phytohormonal signaling.
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Affiliation(s)
- Ruihua Huang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, China
| | - Chengwei Yang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, China
| | - Shengchun Zhang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, China
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18
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Li S, Zhao J, Zhai Y, Yuan Q, Zhang H, Wu X, Lu Y, Peng J, Sun Z, Lin L, Zheng H, Chen J, Yan F. The hypersensitive induced reaction 3 (HIR3) gene contributes to plant basal resistance via an EDS1 and salicylic acid-dependent pathway. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2019; 98:783-797. [PMID: 30730076 DOI: 10.1111/tpj.14271] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 01/25/2019] [Accepted: 01/30/2019] [Indexed: 05/20/2023]
Abstract
The hypersensitive-induced reaction (HIR) gene family is associated with the hypersensitive response (HR) that is a part of the plant defense system against bacterial and fungal pathogens. The involvement of HIR genes in response to viral pathogens has not yet been studied. We now report that the HIR3 genes of Nicotiana benthamiana and Oryza sativa (rice) were upregulated following rice stripe virus (RSV) infection. Silencing of HIR3s in N. benthamiana resulted in an increased accumulation of RSV RNAs, whereas overexpression of HIR3s in N. benthamiana or rice reduced the expression of RSV RNAs and decreased symptom severity, while also conferring resistance to Turnip mosaic virus, Potato virus X, and the bacterial pathogens Pseudomonas syringae and Xanthomonas oryzae. Silencing of HIR3 genes in N. benthamiana reduced the content of salicylic acid (SA) and was accompanied by the downregulated expression of genes in the SA pathway. Transient expression of the two HIR3 gene homologs from N. benthamiana or the rice HIR3 gene in N. benthamiana leaves caused cell death and an accumulation of SA, but did not do so in EDS1-silenced plants or in plants expressing NahG. The results indicate that HIR3 contributes to plant basal resistance via an EDS1- and SA-dependent pathway.
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Affiliation(s)
- Saisai Li
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
- The State Key Laboratory Breeding Base for Sustainable Control of Pest and Disease, China, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Jinping Zhao
- The State Key Laboratory Breeding Base for Sustainable Control of Pest and Disease, China, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Yushan Zhai
- College of Plant Protection, Northwest A& F University, Yangling, 712100, China
| | - Quan Yuan
- College of Plant Protection, Northwest A& F University, Yangling, 712100, China
| | - Hehong Zhang
- The State Key Laboratory Breeding Base for Sustainable Control of Pest and Disease, China, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Xinyang Wu
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
- The State Key Laboratory Breeding Base for Sustainable Control of Pest and Disease, China, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Yuwen Lu
- The State Key Laboratory Breeding Base for Sustainable Control of Pest and Disease, China, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
- Institute of Plant Virology, Ningbo University, Ningbo, 315211, China
| | - Jiejun Peng
- The State Key Laboratory Breeding Base for Sustainable Control of Pest and Disease, China, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
- Institute of Plant Virology, Ningbo University, Ningbo, 315211, China
| | - Zongtao Sun
- The State Key Laboratory Breeding Base for Sustainable Control of Pest and Disease, China, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
- Institute of Plant Virology, Ningbo University, Ningbo, 315211, China
| | - Lin Lin
- The State Key Laboratory Breeding Base for Sustainable Control of Pest and Disease, China, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
- Institute of Plant Virology, Ningbo University, Ningbo, 315211, China
| | - Hongying Zheng
- The State Key Laboratory Breeding Base for Sustainable Control of Pest and Disease, China, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
- Institute of Plant Virology, Ningbo University, Ningbo, 315211, China
| | - Jianping Chen
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
- The State Key Laboratory Breeding Base for Sustainable Control of Pest and Disease, China, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
- Institute of Plant Virology, Ningbo University, Ningbo, 315211, China
| | - Fei Yan
- The State Key Laboratory Breeding Base for Sustainable Control of Pest and Disease, China, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
- Institute of Plant Virology, Ningbo University, Ningbo, 315211, China
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19
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Zhao XY, Qi CH, Jiang H, Zheng PF, Zhong MS, Zhao Q, You CX, Li YY, Hao YJ. Functional identification of apple on MdHIR4 in biotic stress. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2019; 283:396-406. [PMID: 31128710 DOI: 10.1016/j.plantsci.2018.10.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 10/22/2018] [Accepted: 10/29/2018] [Indexed: 06/09/2023]
Abstract
In plants, hypersensitive-induced reaction (HIR) proteins are involved in stress responses, especially biotic stress. However, the potential molecular mechanisms of HIR-mediated biotic resistance in plants are rarely reported. We found that apple (Malus domestica) MdHIR4 was localized in the cell nucleus and membrane similar to AtHIR1 in Arabidopsis. Moreover, salicylic acid and the bacterial flagellin flg22 (a conserved, 22-amino acid motif), which are relevant to biotic stress, could induce MdHIR4 expression. Additionally, the transcription level of MdHIR4 was increased by Methyl jasmonate treatment. Ectopic expression of MdHIR4 in Arabidopsis and Nicotiana benthamiana reduced sensitivity to Methyl jasmonate and enhanced resistance to the bacterial pathogen Pst DC3000 (Pseudomonas syringae tomato DC3000). The interaction between MdHIR4 and AtJAZs proteins (AtJAZ3, AtJAZ4, and AtJAZ9) implied that MdHIR4 participated in the jasmonic acid (JA) signaling pathway. We found the expression of JA-related genes and PRs to change in transgenic plants, further demonstrating that MdHIR4 mediated biotic stress through the JA signaling pathway. Repressing the expression of MdHIR4 in apple leaves and calli increased resistance to Botryosphaeria dothidea by influencing the transcription of resistance-related genes. Our findings reveal the resistant function to biotic stress of MdHIR4 in transgenic plants, including Arabidopsis, tobacco, and apple, and identify the regulating mechanism of MdHIR4-related biotic resistance.
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Affiliation(s)
- Xian-Yan Zhao
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Chen-Hui Qi
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China
| | - Han Jiang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Peng-Fei Zheng
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China
| | - Ming-Shuang Zhong
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China
| | - Qiang Zhao
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China
| | - Chun-Xiang You
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China
| | - Yuan-Yuan Li
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China.
| | - Yu-Jin Hao
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China.
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Padilla-Vaca F, Vargas-Maya NI, Elizarrarás-Vargas NU, Rangel-Serrano Á, Cardoso-Reyes LR, Razo-Soria T, Membrillo-Hernández J, Franco B. Flotillin homologue is involved in the swimming behavior of Escherichia coli. Arch Microbiol 2019; 201:999-1008. [PMID: 31062059 DOI: 10.1007/s00203-019-01670-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 04/22/2019] [Accepted: 04/24/2019] [Indexed: 01/22/2023]
Abstract
Cellular membrane is a key component for maintaining cell shape and integrity. The classical membrane structure and function by Singer and Nicolson groundbreaking model has depicted the membrane as a homogeneous fluid structure. This view has changed by the discovery of discrete domains containing different lipid compositions, called lipid rafts, which play a key role in signal transduction in eukaryotic cells. In the past few years, lipid raft-like structures have been found in bacteria also, constituted by cardiolipin and other modified lipids, perhaps involved in generating a specific site for protein clustering. Here, we report the analysis of a protein termed YqiK from Escherichia coli, a prohibitin homolog that has been implicated in stress sensing by the formation of membrane-associated microdomains. The E. coli yqiK-deficient mutant strain showed an enhanced swimming behavior and was resistant to ampicillin but its response to other stressing conditions was similar to that of the wild-type strain. The abnormal swimming behavior is reversed when the protein is expressed in trans from a plasmid. Also, we demonstrate that YqiK is not redundant with QmcA, another flotillin homolog found in E. coli. Our results, along with the data available in the literature, suggest that YqiK may be involved in the formation of discrete membrane-associated signaling complexes that regulate and agglomerate signaling proteins to generate cell response to chemotaxis.
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Affiliation(s)
- Felipe Padilla-Vaca
- División de Ciencias Naturales y Exactas, Departamento de Biología, Universidad de Guanajuato, Noria Alta s/n, Guanajuato, Gto, 36050, Mexico
| | - Naurú Idalia Vargas-Maya
- División de Ciencias Naturales y Exactas, Departamento de Biología, Universidad de Guanajuato, Noria Alta s/n, Guanajuato, Gto, 36050, Mexico
| | - Narciso Ulises Elizarrarás-Vargas
- División de Ciencias Naturales y Exactas, Departamento de Biología, Universidad de Guanajuato, Noria Alta s/n, Guanajuato, Gto, 36050, Mexico
| | - Ángeles Rangel-Serrano
- División de Ciencias Naturales y Exactas, Departamento de Biología, Universidad de Guanajuato, Noria Alta s/n, Guanajuato, Gto, 36050, Mexico
| | - Luis Rafael Cardoso-Reyes
- División de Ciencias Naturales y Exactas, Departamento de Biología, Universidad de Guanajuato, Noria Alta s/n, Guanajuato, Gto, 36050, Mexico
| | - Tannia Razo-Soria
- División de Ciencias Naturales y Exactas, Departamento de Biología, Universidad de Guanajuato, Noria Alta s/n, Guanajuato, Gto, 36050, Mexico
| | - Jorge Membrillo-Hernández
- Departamento de Bioingeniería, Escuela de Ingeniería y Ciencias, Tecnológico de Monterrey, Monterrey, Mexico
| | - Bernardo Franco
- División de Ciencias Naturales y Exactas, Departamento de Biología, Universidad de Guanajuato, Noria Alta s/n, Guanajuato, Gto, 36050, Mexico.
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Simova-Stoilova LP, López-Hidalgo C, Sanchez-Lucas R, Valero-Galvan J, Romero-Rodríguez C, Jorrin-Novo JV. Holm oak proteomic response to water limitation at seedling establishment stage reveals specific changes in different plant parts as well as interaction between roots and cotyledons. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2018; 276:1-13. [PMID: 30348307 DOI: 10.1016/j.plantsci.2018.07.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 07/17/2018] [Accepted: 07/19/2018] [Indexed: 05/11/2023]
Abstract
Quercus ilex is a dominant tree species in the Mediterranean region with double economic and ecological importance and increasing use in reforestation. Seedling establishment is extremely vulnerable to environmental stresses, particularly drought. A time course study on physiological and proteomic response of holm oak to water limitation stress and recovery during early heterotrophic growth is reported. Applied stress led to diminution in plant water content and root growth, oxidative stress in roots and some alterations in the anti-oxidative protection. Plant parts differed substantially in soluble sugar and free phenolic content, and in their changes during stress and recovery. Proteomic response in holm oak roots and cotyledons was estimated using combined 1-DE/2-DE approach and protein identification by MALDI TOF-TOF PMF and MS/MS. A total of 127 differentially abundant protein species (DAPs) were identified. DAPs related to starch metabolism, lipid to sugar conversion, reserve proteins and their mobilization were typical for cotyledons. DAPs in roots were involved in sugar utilization, secondary metabolism and defense, including pathogenesis related proteins from PR-5 and PR-10 families. Results emphasize specific proteome signatures of separate plant parts as well as importance of sink-source interaction between root and cotyledon in the time course of stress and in recovery.
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Affiliation(s)
- Lyudmila P Simova-Stoilova
- Dept. of Biochemistry and Molecular Biology, University of Cordoba, Agrifood Campus of International Excellence (ceiA3), 14071 Cordoba, Spain; Plant Molecular Biology Dept., Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Acad. G. Bonchev Str. Bl 21, 1113 Sofia, Bulgaria.
| | - Cristina López-Hidalgo
- Dept. of Biochemistry and Molecular Biology, University of Cordoba, Agrifood Campus of International Excellence (ceiA3), 14071 Cordoba, Spain.
| | - Rosa Sanchez-Lucas
- Dept. of Biochemistry and Molecular Biology, University of Cordoba, Agrifood Campus of International Excellence (ceiA3), 14071 Cordoba, Spain.
| | - Jose Valero-Galvan
- Dept. of Biochemistry and Molecular Biology, University of Cordoba, Agrifood Campus of International Excellence (ceiA3), 14071 Cordoba, Spain; Dept. Chemistry-Biology, Biomedical Sciences Institute, Autonomous University of Ciudad Juárez, Anillo Envolvente del Pronaf y Estocolmo s/n, 32310 Ciudad Juarez, Mexico.
| | - Cristina Romero-Rodríguez
- Dept. of Biochemistry and Molecular Biology, University of Cordoba, Agrifood Campus of International Excellence (ceiA3), 14071 Cordoba, Spain; Technological Multidisciplinary Research Centre, National University of Asunción, Paraguay.
| | - Jesus V Jorrin-Novo
- Dept. of Biochemistry and Molecular Biology, University of Cordoba, Agrifood Campus of International Excellence (ceiA3), 14071 Cordoba, Spain.
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Wang W, Xu L, Yang Y, Dong L, Zhao B, Lu J, Zhang T, Zhao Y. A novel prognostic marker and immunogenic membrane antigen: prohibitin (PHB) in pancreatic cancer. Clin Transl Gastroenterol 2018; 9:178. [PMID: 30185797 PMCID: PMC6125288 DOI: 10.1038/s41424-018-0044-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Revised: 06/04/2018] [Accepted: 06/05/2018] [Indexed: 01/05/2023] Open
Abstract
Background Previous study, using immunoblotting with IgG and membrane proteins, identified prohibitin (PHB) as a potential immunogenic membrane antigen. Now, investigate PHB expression and biological functions in pancreatic cancer. Methods PHB expression was analysed in PDAC cell lines, normal pancreas tissues, cancer tissues, PDAC patient sera and healthy volunteer sera using QRT-PCR, Western blotting, IHC, and ELISA, and a survival analysis and a COX regression analysis were performed. Low and high PHB expression levels were accomplished using RNA interference technology and gene transfer techniques. Cell proliferation, migration, and invasion, apoptosis-related proteins were assessed 48 h after transfection. Results PHB was generally expressed in the 8 tested PDAC cell lines. PHB was significantly increased in PDAC tissues and negatively correlated with overall survival (p < 0.01). PHB was an independent prognostic factor in PDAC (p < 0.01). PHB was increased in PDAC patient sera (p < 0.01). siRNA-PHB decreased cell growth, migration and invasion. However, PHB overexpression resulted in the opposite effects. Western blotting and Flow cytometric analysis revealed apoptosis inhibition in siRNA-PHB PDAC cells. Conclusions PHB plays a key role in modulating the malignant phenotype and apoptosis induction, which may be a novel prognostic predictor and a candidate for targeted therapy against PDAC.
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Affiliation(s)
- Weibin Wang
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, 1 Shuai Fu Yuan Hu Tong, Beijing, 100730, China
| | - Lai Xu
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, 1 Shuai Fu Yuan Hu Tong, Beijing, 100730, China
| | - Yu Yang
- Department of General Surgery, Beijing Tsinghua Chang Gung Hospital, Tsinghua University, 168 soup road, Changping District, Beijing, 102218, China
| | - LiangBo Dong
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, 1 Shuai Fu Yuan Hu Tong, Beijing, 100730, China
| | - BangBo Zhao
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, 1 Shuai Fu Yuan Hu Tong, Beijing, 100730, China
| | - Jun Lu
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, 1 Shuai Fu Yuan Hu Tong, Beijing, 100730, China
| | - Taiping Zhang
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, 1 Shuai Fu Yuan Hu Tong, Beijing, 100730, China
| | - Yupei Zhao
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, 1 Shuai Fu Yuan Hu Tong, Beijing, 100730, China.
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23
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Michelotti V, Lamontanara A, Buriani G, Orrù L, Cellini A, Donati I, Vanneste JL, Cattivelli L, Tacconi G, Spinelli F. Comparative transcriptome analysis of the interaction between Actinidia chinensis var. chinensis and Pseudomonas syringae pv. actinidiae in absence and presence of acibenzolar-S-methyl. BMC Genomics 2018; 19:585. [PMID: 30081820 PMCID: PMC6090863 DOI: 10.1186/s12864-018-4967-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 07/30/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Since 2007, bacterial canker caused by Pseudomonas syringae pv. actinidiae (Psa) has become a pandemic disease leading to important economic losses in every country where kiwifruit is widely cultivated. Options for controlling this disease are very limited and rely primarily on the use of bactericidal compounds, such as copper, and resistance inducers. Among the latter, the most widely studied is acibenzolar-S-methyl. To elucidate the early molecular reaction of kiwifruit plants (Actinidia chinensis var. chinensis) to Psa infection and acibenzolar-S-methyl treatment, a RNA seq analysis was performed at different phases of the infection process, from the epiphytic phase to the endophytic invasion on acibenzolar-S-methyl treated and on non-treated plants. The infection process was monitored in vivo by confocal laser scanning microscopy. RESULTS De novo assembly of kiwifruit transcriptome revealed a total of 39,607 transcripts, of which 3360 were differentially expressed during the infection process, primarily 3 h post inoculation. The study revealed the coordinated changes of important gene functional categories such as signaling, hormonal balance and transcriptional regulation. Among the transcription factor families, AP2/ERF, MYB, Myc, bHLH, GATA, NAC, WRKY and GRAS were found differentially expressed in response to Psa infection and acibenzolar-S-methyl treatment. Finally, in plants treated with acibenzolar-S-methyl, a number of gene functions related to plant resistance, such as PR proteins, were modulated, suggesting the set-up of a more effective defense response against the pathogen. Weighted-gene coexpression network analysis confirmed these results. CONCLUSIONS Our work provides an in-depth description of the plant molecular reactions to Psa, it highlights the metabolic pathway related to acibenzolar-S-methyl-induced resistance and it contributes to the development of effective control strategies in open field.
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Affiliation(s)
- Vania Michelotti
- Council for agriculture research and economics (CREA), Research Centre for Genomics and Bioinformatics, via S. Protaso, 302, CAP, 29017 Fiorenzuola d’Arda, Piacenza Italy
| | - Antonella Lamontanara
- Council for agriculture research and economics (CREA), Research Centre for Genomics and Bioinformatics, via S. Protaso, 302, CAP, 29017 Fiorenzuola d’Arda, Piacenza Italy
| | - Giampaolo Buriani
- Department of Agricultural Sciences Alma Mater Studiorum, University of Bologna, viale Fanin 46, 40127 Bologna, Italy
| | - Luigi Orrù
- Council for agriculture research and economics (CREA), Research Centre for Genomics and Bioinformatics, via S. Protaso, 302, CAP, 29017 Fiorenzuola d’Arda, Piacenza Italy
| | - Antonio Cellini
- Department of Agricultural Sciences Alma Mater Studiorum, University of Bologna, viale Fanin 46, 40127 Bologna, Italy
| | - Irene Donati
- Department of Agricultural Sciences Alma Mater Studiorum, University of Bologna, viale Fanin 46, 40127 Bologna, Italy
| | - Joel L. Vanneste
- The New Zealand Institute for Plant & Food Research Ltd, Ruakura Research Centre, Bisley Road, Ruakura, Private Bag 3123, Hamilton, 3240 New Zealand
| | - Luigi Cattivelli
- Council for agriculture research and economics (CREA), Research Centre for Genomics and Bioinformatics, via S. Protaso, 302, CAP, 29017 Fiorenzuola d’Arda, Piacenza Italy
| | - Gianni Tacconi
- Council for agriculture research and economics (CREA), Research Centre for Genomics and Bioinformatics, via S. Protaso, 302, CAP, 29017 Fiorenzuola d’Arda, Piacenza Italy
| | - Francesco Spinelli
- Department of Agricultural Sciences Alma Mater Studiorum, University of Bologna, viale Fanin 46, 40127 Bologna, Italy
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Hussain A, Li X, Weng Y, Liu Z, Ashraf MF, Noman A, Yang S, Ifnan M, Qiu S, Yang Y, Guan D, He S. CaWRKY22 Acts as a Positive Regulator in Pepper Response to RalstoniaSolanacearum by Constituting Networks with CaWRKY6, CaWRKY27, CaWRKY40, and CaWRKY58. Int J Mol Sci 2018; 19:E1426. [PMID: 29747470 PMCID: PMC5983767 DOI: 10.3390/ijms19051426] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 04/23/2018] [Accepted: 05/01/2018] [Indexed: 11/16/2022] Open
Abstract
The WRKY web, which is comprised of a subset of WRKY transcription factors (TFs), plays a crucial role in the regulation of plant immunity, however, the mode of organization and operation of this network remains obscure, especially in non-model plants such as pepper (Capsicum annuum). Herein, CaWRKY22, a member of a subgroup of IIe WRKY proteins from pepper, was functionally characterized in pepper immunity against Ralstonia Solanacearum. CaWRKY22 was found to target the nuclei, and its transcript level was significantly upregulated by Ralstonia Solanacearum inoculation (RSI) and exogenously applied salicylic acid (SA), Methyl jasmonate (MeJA), or ethephon (ETH). Loss-of-function CaWRKY22, caused by virus-induced gene silencing (VIGS), enhanced pepper’s susceptibility to RSI. In addition, the silencing of CaWRKY22 perturbed the hypersensitive response (HR)-like cell death elicited by RSI and downregulated defense-related genes including CaPO2, CaPR4, CaACC, CaBPR1, CaDEF1, CaHIR1, and CaWRKY40. CaWRKY22 was found to directly bind to the promoters of CaPR1, CaDEF1, and CaWRKY40 by chromatin immuno-precipitation (ChIP) analysis. Contrastingly, transient overexpression of CaWRKY22 in pepper leaves triggered significant HR-like cell death and upregulated the tested immunity associated maker genes. Moreover, the transient overexpression of CaWRKY22 upregulated the expression of CaWRKY6 and CaWRKY27 while it downregulated of the expression of CaWRKY58. Conversely, the transient overexpression of CaWRKY6, CaWRKY27, and CaWRKY40 upregulated the expression of CaWRKY22, while transient overexpression of CaWRKY58 downregulated the transcript levels of CaWRKY22. These data collectively recommend the role of CaWRKY22 as a positive regulator of pepper immunity against R. Solanacearum, which is regulated by signaling synergistically mediated by SA, jasmonic acid (JA), and ethylene (ET), integrating into WRKY networks with WRKY TFs including CaWRKY6, CaWRKY27, CaWRKY40, and CaWRKY58.
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Affiliation(s)
- Ansar Hussain
- Ministry of Education Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- Key Laboratory of Applied Genetics of Universities in Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Xia Li
- Ministry of Education Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- Key Laboratory of Applied Genetics of Universities in Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Yahong Weng
- Ministry of Education Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- Key Laboratory of Applied Genetics of Universities in Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Zhiqin Liu
- Ministry of Education Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- Key Laboratory of Applied Genetics of Universities in Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Muhammad Furqan Ashraf
- Ministry of Education Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- Key Laboratory of Applied Genetics of Universities in Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Ali Noman
- Ministry of Education Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- Key Laboratory of Applied Genetics of Universities in Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- Department of Botany, Government College University, Faisalabad 38040, Pakistan.
| | - Sheng Yang
- Ministry of Education Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- Key Laboratory of Applied Genetics of Universities in Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Muhammad Ifnan
- Ministry of Education Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- Key Laboratory of Applied Genetics of Universities in Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Shanshan Qiu
- Ministry of Education Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- Key Laboratory of Applied Genetics of Universities in Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Yingjie Yang
- Ministry of Education Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- Key Laboratory of Applied Genetics of Universities in Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Deyi Guan
- Ministry of Education Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- Key Laboratory of Applied Genetics of Universities in Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Shuilin He
- Ministry of Education Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
- Key Laboratory of Applied Genetics of Universities in Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
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Zhu L, Chang Y, Xing J, Tang X, Sheng X, Zhan W. Comparative proteomic analysis between two haemocyte subpopulations in shrimp Fenneropenaeus chinensis. FISH & SHELLFISH IMMUNOLOGY 2018; 72:325-333. [PMID: 28966142 DOI: 10.1016/j.fsi.2017.09.074] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 09/13/2017] [Accepted: 09/27/2017] [Indexed: 06/07/2023]
Abstract
In our previous work, granulocytes and hyalinocytes were successfully separated by immunomagnetic bead (IMB) method using monoclonal antibodies (mAbs) against granulocytes of shrimp (Fenneropenaeus chinensis). In order to elucidate the proteomic differentiation between granulocytes and hyalinocytes, in this paper, the differentially expressed proteins were analyzed between non-fixed/un-permeabilized (NFP) haemocytes and fixed/permeabilized (FP) haemocytes using two-dimensional gel electrophoresis (2-DE) combined with mass spectrometry (MS). Then the FP haemocytes were separated into two haemocyte subpopulations using IMB method, and the comparative proteome between granulocytes and hyalinocytes was investigated. The results showed that 10 differentially expressed protein spots were detected and identified as 4 proteins in the NFP haemocytes. Twenty one differentially expressed proteins were successfully identified between granulocytes and hyalinocytes, which include 4 unique expressed proteins in granulocytes, 4 significantly highly expressed proteins in granulocytes, and 13 significantly high expressed proteins in hyalinocytes. According to Gene Ontology annotation, the identified proteins between granulocytes and hyalinocytes were classified into six categories, including binding proteins, proteins involved in catalytic activity, enzyme regulator activity, structural molecule activity, translation regulator activity, and ungrouped proteins. Furthermore, quantitative PCR confirmed that the trend of transcription levels of three selected genes were consistent with the proteomic data from 2-DE. The results may lead to better understanding of the functions of haemocyte subpopulations.
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Affiliation(s)
- Lei Zhu
- Laboratory of Pathology and Immunology of Aquatic Animals, KLMME, Ocean University of China, Qingdao 266003, PR China
| | - Yanhong Chang
- Laboratory of Pathology and Immunology of Aquatic Animals, KLMME, Ocean University of China, Qingdao 266003, PR China
| | - Jing Xing
- Laboratory of Pathology and Immunology of Aquatic Animals, KLMME, Ocean University of China, Qingdao 266003, PR China.
| | - Xiaoqian Tang
- Laboratory of Pathology and Immunology of Aquatic Animals, KLMME, Ocean University of China, Qingdao 266003, PR China
| | - Xiuzhen Sheng
- Laboratory of Pathology and Immunology of Aquatic Animals, KLMME, Ocean University of China, Qingdao 266003, PR China
| | - Wenbin Zhan
- Laboratory of Pathology and Immunology of Aquatic Animals, KLMME, Ocean University of China, Qingdao 266003, PR China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, No. 1 Wenhai Road, Aoshanwei Town, Qingdao, China
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26
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Prohibitin: a potential therapeutic target in tyrosine kinase signaling. Signal Transduct Target Ther 2017; 2:17059. [PMID: 29263933 PMCID: PMC5730683 DOI: 10.1038/sigtrans.2017.59] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Revised: 08/03/2017] [Accepted: 09/07/2017] [Indexed: 11/10/2022] Open
Abstract
Prohibitin is a pleiotropic protein that has roles in fundamental cellular processes, such as cellular proliferation and mitochondrial housekeeping, and in cell- or tissue-specific functions, such as adipogenesis and immune cell functions. The different functions of prohibitin are mediated by its cell compartment-specific attributes, which include acting as an adaptor molecule in membrane signaling, a scaffolding protein in mitochondria, and a transcriptional co-regulator in the nucleus. However, the precise relationship between its distinct cellular localization and diverse functions remain largely unknown. Accumulating evidence suggests that the phosphorylation of prohibitin plays a role in a number of cell signaling pathways and in intracellular trafficking. Herein, we discuss the known and potential importance of the site-specific phosphorylation of prohibitin in regulating these features. We will discuss this in the context of new evidence from tissue-specific transgenic mouse models of prohibitin, including a mutant prohibitin lacking a crucial tyrosine phosphorylation site. We conclude with the opinion that prohibitin can be used as a potential target for tyrosine kinase signal transduction-targeting therapy, including in insulin, growth factors, and immune signaling pathways.
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Xu R, Song X, Su P, Pang Y, Li Q. Identification and characterization of the lamprey Flotillin-1 gene with a role in cell adhesion. FISH & SHELLFISH IMMUNOLOGY 2017; 71:286-294. [PMID: 28687359 DOI: 10.1016/j.fsi.2017.06.061] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 05/31/2017] [Accepted: 06/30/2017] [Indexed: 06/07/2023]
Abstract
Flotillin-1 is a kind of localize into specific cholesterol rich microdomains in cellular membranes and highly conserved lipid rafts marker protein widely distributed in animals and plants. It provides a platform for the reaction of many proteins in signal transduction, as scaffolding plays an important role in transmembrane signaling and cell adhesion. Here, Flotillin-1 protein from lamprey was identified and characterized (designated as L-Flotillin-1). After a partial cDNA sequence of L-Flotillin-1 was identified in a lamprey supraneural body cDNA library, the full-length cDNA was obtained using 3'- and 5'-rapid amplification of cDNA ends (RACE). L-Flotillin-1 encodes 424 amino acids and contains a prohibitin domain and a flotillin repetitive area. The L-Flotillin-1 protein was primarily distributed in kidney, supraneural body, gill, heart, liver and intestine via real-time PCR and immunohistochemistry assays. Immunofluorescence and western blot results showed that L-Flotillin-1 was considered to be used as a marker protein of lamprey lipid rafts and exosomes. Furthermore, overexpression of pEGFP-N1-L-Flotillin-1 induced the up-regulation of vascular cell adhesion molecule-1 (VCAM-1) and intercellular cell adhesion molecule-1 (ICAM-1) mRNA levels. These results indicated that the L-Flotillin-1 gene encodes Flotillin-1 protein that was used as a conserved marker protein and may play an important role in cell adhesion, providing clues for understanding the universal functions of Flotillin-1 proteins in other species and suggesting that these proteins could serve as pattern recognition molecules in immunotherapy. We revealed that Flotillin-1 protein of lamprey overexpression in human cells plays a prevalent role in cell migration and provide new thought of treatment to diseases.
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Affiliation(s)
- Rong Xu
- College of Life Sciences, Liaoning Normal University, Dalian 116081, China; Lamprey Research Center, Liaoning Normal University, Dalian 116081, China
| | - Xiaoping Song
- College of Life Sciences, Liaoning Normal University, Dalian 116081, China; Lamprey Research Center, Liaoning Normal University, Dalian 116081, China; Affilated Zhongshan Hospital, Dalian University Respiratory Medicine, Dalian 116001, China
| | - Peng Su
- College of Life Sciences, Liaoning Normal University, Dalian 116081, China; Lamprey Research Center, Liaoning Normal University, Dalian 116081, China
| | - Yue Pang
- College of Life Sciences, Liaoning Normal University, Dalian 116081, China; Lamprey Research Center, Liaoning Normal University, Dalian 116081, China.
| | - Qingwei Li
- College of Life Sciences, Liaoning Normal University, Dalian 116081, China; Lamprey Research Center, Liaoning Normal University, Dalian 116081, China.
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Hong JK, Hwang IS, Hwang BK. Functional roles of the pepper leucine-rich repeat protein and its interactions with pathogenesis-related and hypersensitive-induced proteins in plant cell death and immunity. PLANTA 2017; 246:351-364. [PMID: 28508261 DOI: 10.1007/s00425-017-2709-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 05/06/2017] [Indexed: 05/25/2023]
Abstract
Pepper leucine-rich repeat protein (CaLRR1) interacts with defense response proteins to regulate plant cell death and immunity. This review highlights the current understanding of the molecular functions of CaLRR1 and its interactor proteins. Plant cell death and immune responses to microbial pathogens are controlled by complex and tightly regulated molecular signaling networks. Xanthomonas campestris pv. vesicatoria (Xcv)-inducible pepper (Capsicum annuum) leucine-rich repeat protein 1 (CaLRR1) serves as a molecular marker for plant cell death and immunity signaling. In this review, we discuss recent advances in elucidating the functional roles of CaLRR1 and its interacting plant proteins, and understanding how they are involved in the cell death and defense responses. CaLRR1 physically interacts with pepper pathogenesis-related proteins (CaPR10 and CaPR4b) and hypersensitive-induced reaction protein (CaHIR1) to regulate plant cell death and defense responses. CaLRR1 is produced in the cytoplasm and trafficked to the extracellular matrix. CaLRR1 binds to CaPR10 in the cytoplasm and CaPR4b and CaHIR1 at the plasma membrane. CaLRR1 synergistically accelerates CaPR10-triggered hypersensitive cell death, but negatively regulates CaPR4b- and CaHIR1-triggered cell death. CaHIR1 interacts with Xcv filamentous hemagglutinin (Fha1) to trigger disease-associated cell death. The subcellular localization and cellular function of these CaLRR1 interactors during plant cell death and defense responses were elucidated by Agrobacterium-mediated transient expression, virus-induced gene silencing, and transgenic overexpression studies. CaPR10, CaPR4b, and CaHIR1 positively regulate defense signaling mediated by salicylic acid and reactive oxygen species, thereby activating hypersensitive cell death and disease resistance. A comprehensive understanding of the molecular functions of CaLRR1 and its interacting protein partners in cell death and defense responses will provide valuable information for the molecular genetics of plant disease resistance, which could be exploited as a sustainable disease management strategy.
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Affiliation(s)
- Jeum Kyu Hong
- Laboratory of Plant Pathology and Protection, Department of Horticultural Science, College of Biosciences, Gyeongnam National University of Science and Technology, Jinju, 52725, Republic of Korea
| | - In Sun Hwang
- Department of Horticultural Biotechnology, Kyung Hee University, Yongin, 17104, Republic of Korea
| | - Byung Kook Hwang
- Laboratory of Molecular Plant Pathology, College of Life Sciences and Biotechnology, Korea University, Seoul, 02841, Republic of Korea.
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Chen KQ, Zhao XY, An XH, Tian Y, Liu DD, You CX, Hao YJ. MdHIR proteins repress anthocyanin accumulation by interacting with the MdJAZ2 protein to inhibit its degradation in apples. Sci Rep 2017; 7:44484. [PMID: 28317851 PMCID: PMC5357849 DOI: 10.1038/srep44484] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 02/09/2017] [Indexed: 12/24/2022] Open
Abstract
In higher plants, jasmonate ZIM-domain (JAZ) proteins negatively regulate the biosynthesis of anthocyanins by interacting with bHLH transcription factors. However, it is largely unknown if and how other regulators are involved in this process. In this study, the apple MdJAZ2 protein was characterized in regards to its function in the negative regulation of anthocyanin accumulation and peel coloration. MdJAZ2 was used as a bait to screen a cDNA library using the yeast two-hybrid method. The hypersensitive induced reaction (HIR) proteins, MdHIR2 and MdHIR4, were obtained from this yeast two-hybrid. The ZIM domain of MdJAZ2 and the PHB domain of the MdHIR proteins are necessary for their interactions. The interactions were further verified using an in vitro pull-down assay. Subsequently, immunoblotting assays demonstrated that MdHIR4 enhanced the stability of the MdJAZ2-GUS protein. Finally, a viral vector-based transformation method showed that MdHIR4 inhibited anthocyanin accumulation and fruit coloration in apple by modulating the expression of genes associated with anthocyanin biosynthesis.
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Affiliation(s)
- Ke-Qin Chen
- National Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China
| | - Xian-Yan Zhao
- National Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China.,State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xiu-Hong An
- National Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China
| | - Yi Tian
- National Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China
| | - Dan-Dan Liu
- National Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China
| | - Chun-Xiang You
- National Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China
| | - Yu-Jin Hao
- National Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China
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Zhu X, Yu F, Yang Z, Liu S, Dai C, Lu X, Liu C, Yu W, Li N. In plantachemical cross-linking and mass spectrometry analysis of protein structure and interaction in Arabidopsis. Proteomics 2016; 16:1915-27. [DOI: 10.1002/pmic.201500310] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 04/18/2016] [Accepted: 05/17/2016] [Indexed: 11/12/2022]
Affiliation(s)
- Xinliang Zhu
- Division of Life Science; The Hong Kong University of Science and Technology; Hong Kong SAR P. R. China
- Key Laboratory of Biomedical Information Engineering of Ministry of Education; School of Life Science and Technology; Xi'an Jiaotong University; Xi'an Shaanxi Province P. R. China
| | - Fengchao Yu
- Division of Biomedical Engineering; The Hong Kong University of Science and Technology; Hong Kong SAR P. R. China
| | - Zhu Yang
- Division of Life Science; The Hong Kong University of Science and Technology; Hong Kong SAR P. R. China
| | - Shichang Liu
- Division of Life Science; The Hong Kong University of Science and Technology; Hong Kong SAR P. R. China
| | - Chen Dai
- Proteomics Center; Nanjing Agriculture University; Nanjing P. R. China
| | - Xiaoyun Lu
- Key Laboratory of Biomedical Information Engineering of Ministry of Education; School of Life Science and Technology; Xi'an Jiaotong University; Xi'an Shaanxi Province P. R. China
| | - Chenyu Liu
- Division of Life Science; The Hong Kong University of Science and Technology; Hong Kong SAR P. R. China
| | - Weichuan Yu
- Division of Biomedical Engineering; The Hong Kong University of Science and Technology; Hong Kong SAR P. R. China
- Department of Electronic and Computer Engineering; The Hong Kong University of Science and Technology; Hong Kong SAR P. R. China
| | - Ning Li
- Division of Life Science; The Hong Kong University of Science and Technology; Hong Kong SAR P. R. China
- Division of Biomedical Engineering; The Hong Kong University of Science and Technology; Hong Kong SAR P. R. China
- HKUST Shenzhen Research Institute; Shenzhen P. R. China
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Tang BL. Rab32/38 and the xenophagic restriction of intracellular bacteria replication. Microbes Infect 2016; 18:595-603. [PMID: 27256464 DOI: 10.1016/j.micinf.2016.05.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Revised: 05/20/2016] [Accepted: 05/20/2016] [Indexed: 12/18/2022]
Abstract
Rab GTPases' subversion by intracellular pathogens during infection has been extensively documented. Recent findings have implicated a key intracellular bacterial restriction/containment function for Rab32/38 in Salmonella species in macrophages and Listeria monocytogenes in dendritic cells. Rab32/38 aids the phagolysosome maturation, and mediates a parallel xenophagy mechanism by engaging prohibitins.
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Affiliation(s)
- Bor Luen Tang
- Department of Biochemistry and NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore.
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Chowdhury I, Thomas K, Thompson WE. Prohibitin( PHB) roles in granulosa cell physiology. Cell Tissue Res 2016; 363:19-29. [PMID: 26496733 PMCID: PMC4842340 DOI: 10.1007/s00441-015-2302-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 09/14/2015] [Indexed: 11/29/2022]
Abstract
Ovarian granulosa cells (GC) play an important role in the growth and development of the follicle in the process known as folliculogenesis. In the present review, we focus on recent developments in prohibitin (PHB) research in relation to GC physiological functions. PHB is a member of a highly conserved eukaryotic protein family containing the repressor of estrogen activity (REA)/stomatin/PHB/flotillin/HflK/C (SPFH) domain (also known as the PHB domain) found in diverse species from prokaryotes to eukaryotes. PHB is ubiquitously expressed in a circulating free form or is present in multiple cellular compartments including mitochondria, nucleus and plasma membrane. In mitochondria, PHB is anchored to the mitochondrial inner membrane and forms complexes with the ATPases associated with proteases having diverse cellular activities. PHB continuously shuttles between the mitochondria, cytosol and nucleus. In the nucleus, PHB interacts with various transcription factors and modulates transcriptional activity directly or through interactions with chromatin remodeling proteins. Many functions have been attributed to the mitochondrial and nuclear PHB complexes such as cellular differentiation, anti-proliferation, morphogenesis and maintenance of the functional integrity of the mitochondria. However, to date, the regulation of PHB expression patterns and GC physiological functions are not completely understood.
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Affiliation(s)
- Indrajit Chowdhury
- Department of Obstetrics and Gynecology, Reproductive Science Research Program, Morehouse School of Medicine, 720 Westview Drive Southwest, Atlanta, GA 30310, USA.
| | - Kelwyn Thomas
- Department of Neurobiology, Morehouse School of Medicine, Atlanta, GA 30310, USA
| | - Winston E Thompson
- Department of Obstetrics and Gynecology, Reproductive Science Research Program, Morehouse School of Medicine, 720 Westview Drive Southwest, Atlanta, GA 30310, USA.
- Department of Physiology, Reproductive Science Research Program, Morehouse School of Medicine, 720 Westview Drive Southwest, Atlanta, GA 30310, USA.
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Ishikawa T, Aki T, Yanagisawa S, Uchimiya H, Kawai-Yamada M. Overexpression of BAX INHIBITOR-1 Links Plasma Membrane Microdomain Proteins to Stress. PLANT PHYSIOLOGY 2015; 169:1333-43. [PMID: 26297139 PMCID: PMC4587443 DOI: 10.1104/pp.15.00445] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Accepted: 08/17/2015] [Indexed: 05/22/2023]
Abstract
BAX INHIBITOR-1 (BI-1) is a cell death suppressor widely conserved in plants and animals. Overexpression of BI-1 enhances tolerance to stress-induced cell death in plant cells, although the molecular mechanism behind this enhancement is unclear. We recently found that Arabidopsis (Arabidopsis thaliana) BI-1 is involved in the metabolism of sphingolipids, such as the synthesis of 2-hydroxy fatty acids, suggesting the involvement of sphingolipids in the cell death regulatory mechanism downstream of BI-1. Here, we show that BI-1 affects cell death-associated components localized in sphingolipid-enriched microdomains of the plasma membrane in rice (Oryza sativa) cells. The amount of 2-hydroxy fatty acid-containing glucosylceramide increased in the detergent-resistant membrane (DRM; a biochemical counterpart of plasma membrane microdomains) fraction obtained from BI-1-overexpressing rice cells. Comparative proteomics analysis showed quantitative changes of DRM proteins in BI-1-overexpressing cells. In particular, the protein abundance of FLOTILLIN HOMOLOG (FLOT) and HYPERSENSITIVE-INDUCED REACTION PROTEIN3 (HIR3) markedly decreased in DRM of BI-1-overexpressing cells. Loss-of-function analysis demonstrated that FLOT and HIR3 are required for cell death by oxidative stress and salicylic acid, suggesting that the decreased levels of these proteins directly contribute to the stress-tolerant phenotypes in BI-1-overexpressing rice cells. These findings provide a novel biological implication of plant membrane microdomains in stress-induced cell death, which is negatively modulated by BI-1 overexpression via decreasing the abundance of a set of key proteins involved in cell death.
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Affiliation(s)
- Toshiki Ishikawa
- Graduate School of Science and Engineering (T.I., M.K.-Y.) and Institute for Environmental Science and Technology (H.U., M.K.-Y.), Saitama University, Saitama City, Saitama 338-8570, Japan; andGraduate School of Agricultural and Life Sciences (T.A., S.Y.) and Biotechnology Research Center (S.Y.), University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Toshihiko Aki
- Graduate School of Science and Engineering (T.I., M.K.-Y.) and Institute for Environmental Science and Technology (H.U., M.K.-Y.), Saitama University, Saitama City, Saitama 338-8570, Japan; andGraduate School of Agricultural and Life Sciences (T.A., S.Y.) and Biotechnology Research Center (S.Y.), University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Shuichi Yanagisawa
- Graduate School of Science and Engineering (T.I., M.K.-Y.) and Institute for Environmental Science and Technology (H.U., M.K.-Y.), Saitama University, Saitama City, Saitama 338-8570, Japan; andGraduate School of Agricultural and Life Sciences (T.A., S.Y.) and Biotechnology Research Center (S.Y.), University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Hirofumi Uchimiya
- Graduate School of Science and Engineering (T.I., M.K.-Y.) and Institute for Environmental Science and Technology (H.U., M.K.-Y.), Saitama University, Saitama City, Saitama 338-8570, Japan; andGraduate School of Agricultural and Life Sciences (T.A., S.Y.) and Biotechnology Research Center (S.Y.), University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Maki Kawai-Yamada
- Graduate School of Science and Engineering (T.I., M.K.-Y.) and Institute for Environmental Science and Technology (H.U., M.K.-Y.), Saitama University, Saitama City, Saitama 338-8570, Japan; andGraduate School of Agricultural and Life Sciences (T.A., S.Y.) and Biotechnology Research Center (S.Y.), University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan
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Farlora R, Nuñez-Acuña G, Gallardo-Escárate C. Prohibitin-2 gene reveals sex-related differences in the salmon louse Caligus rogercresseyi. Gene 2015; 564:73-80. [DOI: 10.1016/j.gene.2015.03.045] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2015] [Revised: 03/18/2015] [Accepted: 03/20/2015] [Indexed: 12/16/2022]
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Koellhoffer JP, Xing A, Moon BP, Li Z. Tissue-specific expression of a soybean hypersensitive-induced response (HIR) protein gene promoter. PLANT MOLECULAR BIOLOGY 2015; 87:261-71. [PMID: 25501569 DOI: 10.1007/s11103-014-0274-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Accepted: 12/08/2014] [Indexed: 05/16/2023]
Abstract
A Glycine max gene encoding a putative protein similar to hypersensitive-induced response proteins (HIR) was identified as a gene with preferred expressions in flowers and developing seeds by whole transcriptome gene expression profiling. Its promoter gm-hir1 was cloned and revealed to strongly express a fluorescence reporter gene primarily in integuments, anther tapetum, and seed coat with unique tissue-specificity. Expression in the inner integument was apparent prior to pollination, while expression in the outer integument started to develop from the micropylar end outward as the embryo matured. A 5'-deletion study showed that the promoter can be truncated to 600 bp long relative to the translation start site without affecting expression. A positive regulatory element was identified between 600 and 481 bp that controls expression in the inner integument, with no noticeable effect on expression in the outer integument or tapetum. Additionally, removal of the 5'UTR intron had no effect on levels or location of gm-hir1 expression while truncation to 370 bp resulted in a complete loss of expression suggesting that elements controlling both the outer integument and tapetum expression are located within the 481-370 bp region.
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Affiliation(s)
- Jessica P Koellhoffer
- DuPont Agricultural Biotechnology, Experimental Station E353, 200 Powder Mill Road, Wilmington, DE, 19880, USA
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Chowdhury I, Thompson WE, Thomas K. Prohibitins role in cellular survival through Ras-Raf-MEK-ERK pathway. J Cell Physiol 2014; 229:998-1004. [PMID: 24347342 DOI: 10.1002/jcp.24531] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2013] [Accepted: 12/11/2013] [Indexed: 12/15/2022]
Abstract
Prohibitins are members of a highly conserved protein family containing the stomatin/prohibitin/flotillin/HflK/C (SPFH) domain (also known as the prohibitin [PHB] domain) found in unicellular eukaryotes, fungi, plants, animals, and humans. Two highly homologous members of prohibitins expressed in eukaryotes are prohibitin (PHB; B-cell receptor associated protein-32, BAP-32) and prohibitin 2/repressor of estrogen receptor activity (PHB2, REA, BAP-37). Both PHB and REA/PHB2 are ubiquitously expressed and are present in multiple cellular compartments including the mitochondria, nucleus, and the plasma membrane. Multiple functions have been attributed to the mitochondrial and nuclear PHB and PHB2/REA including cellular differentiation, anti-proliferation, and morphogenesis. One of the major functions of the prohibitins are in maintaining the functional integrity of the mitochondria and protecting cells from various stresses. In the present review, we focus on the recent research developments indicating that PHB and PHB2/REA are involved in maintaining cellular survival through the Ras-Raf-MEK-Erk pathway. Understanding the molecular mechanisms by which the intracellular signaling pathways utilize prohibitins in governing cellular survival is likely to result in development of therapeutic strategies to overcome various human pathological disorders such as diabetes, obesity, neurological diseases, inflammatory bowel disease, and cancer.
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Affiliation(s)
- Indrajit Chowdhury
- Department of Obstetrics and Gynecology, Morehouse School of Medicine, Atlanta, Georgia; Reproductive Science Research Program, Morehouse School of Medicine, Atlanta, Georgia
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Gehl B, Sweetlove LJ. Mitochondrial Band-7 family proteins: scaffolds for respiratory chain assembly? FRONTIERS IN PLANT SCIENCE 2014; 5:141. [PMID: 24782879 PMCID: PMC3986555 DOI: 10.3389/fpls.2014.00141] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Accepted: 03/24/2014] [Indexed: 05/28/2023]
Abstract
The band-7 protein family comprises a diverse set of membrane-bound proteins characterized by the presence of a conserved domain. The exact function of this band-7 domain remains elusive, but examples from animal and bacterial stomatin-type proteins demonstrate binding to lipids and the ability to assemble into membrane-bound oligomers that form putative scaffolds. Some members, such as prohibitins (PHB) and human stomatin-like protein 2 (HsSLP2), localize to the mitochondrial inner membrane where they function in cristae formation and hyperfusion. In Arabidopsis, the band-7 protein family has diversified and includes plant-specific members. Mitochondrial-localized members include prohibitins (AtPHBs) and two stomatin-like proteins (AtSLP1 and -2). Studies into PHB function in plants have demonstrated an involvement in root meristem proliferation and putative scaffold formation for mAAA proteases, but it remains unknown how these roles are achieved at the molecular level. In this minireview we summarize the current status of band-7 protein functions in Arabidopsis, and speculate how the mitochondrial members might recruit specific lipids to form microdomains that could shape the organization and functioning of the respiratory chain.
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Affiliation(s)
| | - Lee J. Sweetlove
- *Correspondence: Lee J. Sweetlove, Department of Plant Sciences, University of Oxford, South Parks Road, Oxford OX1 3RB, UK e-mail:
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Gehl B, Lee CP, Bota P, Blatt MR, Sweetlove LJ. An Arabidopsis stomatin-like protein affects mitochondrial respiratory supercomplex organization. PLANT PHYSIOLOGY 2014; 164:1389-400. [PMID: 24424325 PMCID: PMC3938628 DOI: 10.1104/pp.113.230383] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Stomatins belong to the band-7 protein family, a diverse group of conserved eukaryotic and prokaryotic membrane proteins involved in the formation of large protein complexes as protein-lipid scaffolds. The Arabidopsis (Arabidopsis thaliana) genome contains two paralogous genes encoding stomatin-like proteins (SLPs; AtSLP1 and AtSLP2) that are phylogenetically related to human SLP2, a protein involved in mitochondrial fusion and protein complex formation in the mitochondrial inner membrane. We used reverse genetics in combination with biochemical methods to investigate the function of AtSLPs. We demonstrate that both SLPs localize to mitochondrial membranes. SLP1 migrates as a large (approximately 3 MDa) complex in blue-native gel electrophoresis. Remarkably, slp1 knockout mutants have reduced protein and activity levels of complex I and supercomplexes, indicating that SLP affects the assembly and/or stability of these complexes. These findings point to a role for SLP1 in the organization of respiratory supercomplexes in Arabidopsis.
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Ghosh D, Xu J. Abiotic stress responses in plant roots: a proteomics perspective. FRONTIERS IN PLANT SCIENCE 2014; 5:6. [PMID: 24478786 PMCID: PMC3900766 DOI: 10.3389/fpls.2014.00006] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Accepted: 01/06/2014] [Indexed: 05/18/2023]
Abstract
Abiotic stress conditions adversely affect plant growth, resulting in significant decline in crop productivity. To mitigate and recover from the damaging effects of such adverse environmental conditions, plants have evolved various adaptive strategies at cellular and metabolic levels. Most of these strategies involve dynamic changes in protein abundance that can be best explored through proteomics. This review summarizes comparative proteomic studies conducted with roots of various plant species subjected to different abiotic stresses especially drought, salinity, flood, and cold. The main purpose of this article is to highlight and classify the protein level changes in abiotic stress response pathways specifically in plant roots. Shared as well as stressor-specific proteome signatures and adaptive mechanism(s) are simultaneously described. Such a comprehensive account will facilitate the design of genetic engineering strategies that enable the development of broad-spectrum abiotic stress-tolerant crops.
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Affiliation(s)
- Dipanjana Ghosh
- Department of Biological Sciences, NUS Centre for BioImaging Sciences, National University of SingaporeSingapore
| | - Jian Xu
- Department of Biological Sciences, NUS Centre for BioImaging Sciences, National University of SingaporeSingapore
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Zhou TB, Qin YH, Lei FY, Huang WF, Drummen GPC. Prohibitin attenuates oxidative stress and extracellular matrix accumulation in renal interstitial fibrosis disease. PLoS One 2013; 8:e77187. [PMID: 24204768 PMCID: PMC3808389 DOI: 10.1371/journal.pone.0077187] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Accepted: 09/02/2013] [Indexed: 01/11/2023] Open
Abstract
Prohibitin is an evolutionary conserved and pleiotropic protein that has been implicated in various cellular functions, including proliferation, tumour suppression, apoptosis, transcription, and mitochondrial protein folding. Both prohibitin over- and under-expression have been implicated in various diseases and cell types. We recently demonstrated that prohibitin down-regulation results in increased renal interstitial fibrosis (RIF). Here we investigated the role of oxidative stress and prohibitin expression in RIF in unilateral ureteral obstructed rats. Lentivirus-based delivery vectors were used to knockdown or over-express prohibitin. Our results show that increased prohibitin expression was negatively correlated with the RIF index, reactive oxygen species, malon dialdehyde, transforming growth factor β1, collagen IV, fibronectin, and cell apoptosis index. In conclusion, we postulate that prohibitin acts as a positive regulator of mechanisms that counteract oxidative stress and extracellular matrix accumulation and therefore has an antioxidative effect.
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Affiliation(s)
- Tian-Biao Zhou
- Department of Pediatric Nephrology, the First Affiliated Hospital of GuangXi Medical University, NanNing, China ; Department of Nephrology, the Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
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Takahashi D, Kawamura Y, Uemura M. Changes of detergent-resistant plasma membrane proteins in oat and rye during cold acclimation: association with differential freezing tolerance. J Proteome Res 2013; 12:4998-5011. [PMID: 24111712 DOI: 10.1021/pr400750g] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Cold acclimation (CA) results in an increase in freezing tolerance of plants, which is closely associated to functional changes of the plasma membrane (PM). Although proteomic studies have revealed compositional changes of the PM during CA, there has been no large-scale study of how the microdomains in the PM, which contains specific lipids and proteins, change during CA. Therefore, we conducted semiquantitative shotgun proteomics using microdomain-enriched detergent-resistant membrane (DRM) fractions extracted from low freezing-tolerant oat and highly freezing-tolerant rye. We identified 740 and 809 DRM proteins in oat and rye, respectively. Among the proteins identified, the abundances of a variety of proteins, such as P-type ATPase and aquaporins, were affected by CA in both oat and rye. Some CA-responsive proteins in the DRM fractions, such as heat shock protein 70, changed differently in oat and rye. In addition, changes in lipocalins and sugar transporters in the DRM fractions were different from those found in total PM fraction during CA. This is the first report to describe compositional changes in the DRM during CA. The proteomic profiles obtained in the present study hint at many possible microdomain functions associated with CA and freezing tolerance.
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Affiliation(s)
- Daisuke Takahashi
- United Graduate School of Agricultural Sciences and ‡Cryobiofrontier Research Center, Iwate University , 3-18-8 Ueda, Morioka, Iwate 020-8550, Japan
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Katou S, Asakura N, Kojima T, Mitsuhara I, Seo S. Transcriptome analysis of WIPK/SIPK-suppressed plants reveals induction by wounding of disease resistance-related genes prior to the accumulation of salicylic acid. PLANT & CELL PHYSIOLOGY 2013; 54:1005-15. [PMID: 23574699 DOI: 10.1093/pcp/pct055] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Salicylic acid (SA) plays a key role in plant resistance to pathogens. Accumulation of SA is induced by wounding in tobacco plants in which the expression of WIPK and SIPK, two mitogen-activated protein kinases, is suppressed. Here, the mechanisms underlying the abnormal accumulation of SA in WIPK/SIPK-suppressed plants have been characterized. SA accumulation started around 12 h after wounding and was inhibited by cycloheximide (CHX), a protein synthesis inhibitor. SA accumulation, however, was enhanced several fold when leaf discs were transferred onto CHX after floating on water for ≥6 h. Temporal and spatial analyses of wound-induced and CHX-enhanced SA accumulation suggested that wounding induces activators for SA accumulation followed by the generation of repressors, and late CHX treatment inhibits the production of repressors more efficiently than that of activators. Microarray analysis revealed that the expression of many disease resistance-related genes, including N, a Resistance (R) gene for Tobacco mosaic virus and R gene-like genes, was up-regulated in wounded WIPK/SIPK-suppressed plants. Expression of the N gene and R gene-like genes peaked earlier than that of most other genes as well as SA accumulation, and was mainly induced in those parts of leaf discs where SA was highly accumulated. Moreover, wound-induced SA accumulation was decreased by the treatments which compromise the function of R proteins. These results indicate that signaling leading to the expression of disease resistance-related genes is activated by wounding in WIPK/SIPK-suppressed plants, and induction of R gene and R gene-like genes might lead to the biosynthesis of SA.
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Affiliation(s)
- Shinpei Katou
- International Young Researchers Empowerment Center, Shinshu University, Nagano, 399-4598 Japan.
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Equilibrina I, Matsunaga S, Morimoto A, Hashimoto T, Uchiyama S, Fukui K. ASURA (PHB2) interacts with Scc1 through chromatin. Cytogenet Genome Res 2013; 139:225-33. [PMID: 23548868 DOI: 10.1159/000350004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/18/2012] [Indexed: 11/19/2022] Open
Abstract
Sister chromatid cohesion mediated by the cohesin complex is essential for faithful chromosome segregation. Previously we reported that PHB2 (prohibitin2/ASURA), a multifunctional protein, has a role in sister chromatid cohesion. Nevertheless, how ASURA is involved in sister chromatid cohesion still remains unclear. The present co-immunoprecipitation analysis reveals that ASURA interacts with cohesin subunit Scc1 in vivo. We show that ASURA associates with chromatin in a similar manner as Scc1 throughout the cell cycle. Furthermore, our observation using the Fucci (fluorescent ubiquitination-based cell cycle indicator) system indicates that ASURA is important for cohesin maintenance at early mitosis. We have also identified that the conserved PHB domain is responsible for chromatin targeting of ASURA. Our results suggest that the regulation of sister chromatid cohesion is mediated by ASURA binding to chromatin, where ASURA might be involved in cohesin protection through ASURA-Scc1 interactions.
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Affiliation(s)
- I Equilibrina
- Department of Biotechnology, Graduate School of Engineering, Osaka University, Suita, Japan
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Gao J, Zhao R, Xue Y, Niu Z, Cui K, Yu F, Zhang B, Li S. Role of enolase-1 in response to hypoxia in breast cancer: exploring the mechanisms of action. Oncol Rep 2013; 29:1322-32. [PMID: 23381546 DOI: 10.3892/or.2013.2269] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Accepted: 12/06/2012] [Indexed: 11/05/2022] Open
Abstract
In the present study, we investigated the effect of reduced enolase-1 expression in human umbilical vein endothelial cells (HUVECs)/MDA-MB-231 cells on the response to hypoxia and the possible mechanisms involved. Breast cancer cells transfected with enolase-1 siRNA were injected into mice to establish a tumor-bearing mouse model, and the correlation between enolase-1 expression and breast cancer angiogenesis, as well as its effect on the efficacy of radiation therapy were assessed. HUVECs were cultured in vitro, and transfected with enolase-1 siRNA. Following stable passage, 1.0% O2 was used to induce hypoxia. The growth, proliferation, division and angiogenesis of HUVECs were observed using MTT assay, flow cytometry (FCM) and time-lapse video microscopy. The key regulatory molecules were detected using western blot analysis, two-dimensional (2-D) electrophoresis and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS). The breast cancer cell line, MDA-MB-231, was cultured in vitro, and transfected with enolase-1 siRNA. The cells were injected into nude mice, and radiation therapy was administered. Tumor growth, angiogenesis in tumor tissues and apoptosis were observed, and the expression of the endogenous hypoxia marker, hypoxia inducible factor-1α (HIF-1α), was detected using immunohistochemistry after the mice were sacrificed. A significant reduction in the hypoxia-induced apoptosis of HUVECs was observed in the control group compared with the endothelial cells transfected with enolase-1 siRNA. After the enolase-1 transfected breast cancer cells were injected into nude mice, tumor growth significantly declined, and the tumor volume and weight were reduced. Following treatment with radiation therapy, tumor size significantly decreased in both groups, and the highest reduction was observed in the transfected group. The reduction in enolase-1 expression significantly decreases the response to hypoxia and enhances the sensitivity of the cells to radiation therapy; therefore, enolase-1 may be a drug target for the treatment of breast cancer.
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Affiliation(s)
- Jie Gao
- Department of Hepatobiliary Surgery, Shandong Cancer Hospital, Shandong Academy of Medical Sciences, Jinan 276000, PR China
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Duan Y, Guo J, Shi X, Guan X, Liu F, Bai P, Huang L, Kang Z. Wheat hypersensitive-induced reaction genes TaHIR1 and TaHIR3 are involved in response to stripe rust fungus infection and abiotic stresses. PLANT CELL REPORTS 2013; 32:273-83. [PMID: 23111787 DOI: 10.1007/s00299-012-1361-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Revised: 10/08/2012] [Accepted: 10/21/2012] [Indexed: 05/20/2023]
Abstract
KEY MESSAGE : TaHIR1 and TaHIR3 play positive roles in resistance to the stripe rust fungus via inducing HR and regulating defense-related genes, but are negatively regulated by various abiotic stimuli. Plant hypersensitive-induced reaction (HIR) genes are known to be associated with the hypersensitive response and disease defense. In wheat, two HIR genes, TaHIR1 and TaHIR3, have been identified and found to be up-regulated after infection with the stripe rust fungus. Here, we further determined their roles in defense against abiotic stresses and the stripe rust pathogen, Puccinia striiformis f. sp. tritici. TaHIR1 and TaHIR3 proteins were localized in the plasma membrane of tobacco cells. The expression of TaHIR1 and TaHIR3 was reduced by the environmental stimuli, including low temperature, drought, and high salinity stresses. In addition, the expression of TaHIR1 and TaHIR3 was down-regulated by exogenously applied ethrel and abscisic acid, whereas expression was not affected by treatments with salicylic acid and methyl jasmonate. Furthermore, barley stripe mosaic virus-induced gene silencing of TaHIR1 and TaHIR3 reduced resistance in wheat cultivar Suwon11 against an avirulent stripe rust pathotype CYR23 and area of necrotic cells neighboring the infection sites, and altered the expression levels of defense-related genes. These results suggest that TaHIR1 and TaHIR3 function positively in the incompatible interaction of wheat-stripe rust fungus, but exhibit negative transcriptional response to abiotic stresses.
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Affiliation(s)
- Yinghui Duan
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life Science, Northwest A&F University, Yangling, Shaanxi 712100, PR China
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Zhou TB, Qin YH. Signaling pathways of prohibitin and its role in diseases. J Recept Signal Transduct Res 2013; 33:28-36. [PMID: 23327602 DOI: 10.3109/10799893.2012.752006] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Prohibitin (PHB), appearing to be a negative regulator of cell proliferation and to be a tumor suppressor, has been connected to diverse cellular functions including cell cycle control, senescence, apoptosis and the regulation of mitochondrial activities. It is a growth regulatory gene that has pleiotropic functions in the nucleus, mitochondria and cytoplasmic compartments. However, in different tissues/cells, the expression of PHB was different, such as that it was increased in most of the cancers, but its expression was reduced in kidney diseases. Signaling pathways might be very important in the pathogenesis of diseases. This review was performed to provide a relatively complete signaling pathways flowchart for PHB to the investigators who were interested in the roles of PHB in the pathogenesis of diseases. Here, we review the signal transduction pathways of PHB and its role in the pathogenesis of diseases.
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Affiliation(s)
- Tian-Biao Zhou
- Department of Pediatric Nephrology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
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Guan Q, Wu J, Zhang Y, Jiang C, Liu R, Chai C, Zhu J. A DEAD box RNA helicase is critical for pre-mRNA splicing, cold-responsive gene regulation, and cold tolerance in Arabidopsis. THE PLANT CELL 2013; 25:342-56. [PMID: 23371945 PMCID: PMC3584546 DOI: 10.1105/tpc.112.108340] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Cold stress resulting from chilling and freezing temperatures substantially reduces crop production worldwide. To identify genes critical for cold tolerance in plants, we screened Arabidopsis thaliana mutants for deregulated expression of a firefly luciferase reporter gene under the control of the C-REPEAT BINDING FACTOR2 (CBF2) promoter (CBF2:LUC). A regulator of CBF gene expression1 (rcf1-1) mutant that is hypersensitive to cold stress was chosen for in-depth characterization. RCF1 encodes a cold-inducible DEAD (Asp-Glu-Ala-Asp) box RNA helicase. Unlike a previously reported DEAD box RNA helicase (LOW EXPRESSION OF OSMOTICALLY RESPONSIVE GENES4 [LOS4]) that regulates mRNA export, RCF1 does not play a role in mRNA export. Instead, RCF1 functions to maintain proper splicing of pre-mRNAs; many cold-responsive genes are mis-spliced in rcf1-1 mutant plants under cold stress. Functional characterization of four genes (PSEUDO-RESPONSE REGULATOR5 [PRR5], SHAGGY-LIKE SERINE/THREONINE KINASE12 [SK12], MYB FAMILY TRANSCRIPTION FACTOR CIRCADIAN1 [CIR1], and SPFH/PHB DOMAIN-CONTAINING MEMBRANE-ASSOCIATED PROTEIN [SPFH]) that are mis-spliced in rcf1-1 revealed that these genes are cold-inducible positive (CIR1 and SPFH) and negative (PRR5 and SK12) regulators of cold-responsive genes and cold tolerance. Together, our results suggest that the cold-inducible RNA helicase RCF1 is essential for pre-mRNA splicing and is important for cold-responsive gene regulation and cold tolerance in plants.
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Affiliation(s)
- Qingmei Guan
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, Maryland 20742
| | - Jianmin Wu
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, Maryland 20742
| | - Yanyan Zhang
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, Maryland 20742
| | - Changhua Jiang
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, Maryland 20742
| | - Renyi Liu
- Department of Botany and Plant Sciences, University of California, Riverside, California 92521
| | - Chenglin Chai
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, Maryland 20742
| | - Jianhua Zhu
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, Maryland 20742
- Address correspondence to
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Tnani H, López I, Jouenne T, Vicient CM. Quantitative subproteomic analysis of germinating related changes in the scutellum oil bodies of Zea mays. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2012; 191-192:1-7. [PMID: 22682559 DOI: 10.1016/j.plantsci.2012.02.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2011] [Revised: 02/22/2012] [Accepted: 02/23/2012] [Indexed: 05/15/2023]
Abstract
Oil bodies (OBs) were purified from the scutellum of mature maize embryos and from embryos 2 days after imbibition and their associated proteins were extracted and separated by 2-DE. Eighteen proteins were shown to be differentially accumulated, thirteen showed a higher accumulation in mature scutellum and five were highly accumulated in the germinating scutellum. Proteins were identified using LC-MS/MS. Besides previously known oil body protein oleosin, other proteins were identified in this study. Among accumulated proteins during imbibition are prohibitin 2, stress-inducible membrane pore protein Tim17 and manganese superoxide dismutase. Among the proteins whose amount decreases during imbibition are cupin 2, two different protein disulfide isomerases, a triosephosphate isomerase, a class IV heat shock protein, the embryonic protein DC-8, the 60S ribosomal protein P0, a nucleoside-diphosphate kinase, and a rubber elongation factor protein. Some of the identified proteins were previously located in organelles other than oil bodies, suggesting that OBs may interact with these organelles. We also suggest that OBs may act as transient storage depots for proteins that are temporally in excess.
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Affiliation(s)
- H Tnani
- CRAG-Center for Research in Agricultural Genomics-CSIC-IRTA-UAB-UB, Campus UAB, Bellaterra, Cerdanyola del Vallés, 08193 Barcelona, Spain
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Zhou TB, Yin SS, Huang JJ, Ou C. Relationship Between the Prohibitin 3' Untranslated Region C > T Gene Polymorphism and Cancer Susceptibility - Results of a Meta-analysis. Asian Pac J Cancer Prev 2012; 13:3319-3323. [DOI: 10.7314/apjcp.2012.13.7.3319] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023] Open
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