title: Proteomic analysis of zebrafish caudal fin regeneration.
abstract: The epimorphic regeneration of zebrafish caudal fin is rapid and complete. We have analyzed the biomechanism of zebrafish caudal fin regeneration at various time points based on differential proteomics approaches. The spectrum of proteome changes caused by regeneration were analyzed among controls (0 h) and 1, 12, 24, 48, and 72 h postamputation involving quantitative differential proteomics analysis based on two-dimensional gel electrophoresis matrix-assisted laser desorption/ionization and differential in-gel electrophoresis Orbitrap analysis. A total of 96 proteins were found differentially regulated between the control nonregenerating and regenerating tissues of different time points for having at least 1.5-fold changes. 90 proteins were identified as differentially regulated for regeneration based on differential in-gel electrophoresis analysis between the control and regenerating tissues. 35 proteins were characterized for its expression in all of the five regenerating time points against the control samples. The proteins identified and associated with regeneration were found to be directly allied with various molecular, biological, and cellular functions. Based on network pathway analysis, the identified proteome data set for regeneration was majorly associated in maintaining cellular structure and architecture. Also the proteins were found associated for the cytoskeleton remodeling pathway and cellular immune defense mechanism. The major proteins that were found differentially regulated during zebrafish caudal fin regeneration includes keratin and its 10 isoforms, cofilin 2, annexin a1, skeletal α1 actin, and structural proteins. Annexin A1 was found to be exclusively undergoing phosphorylation during regeneration. The obtained differential proteome and the direct association of the various proteins might lead to a new understanding of the regeneration mechanism.
authors.affiliation: Council of Scientific and Industrial Research, Centre for Cellular and Molecular Biology, Hyderabad 500007, India.
authors.forename: Sandeep
authors.initials: S
authors.lastname: Saxena
authors.forename: Sachin K
authors.initials: SK
authors.lastname: Singh
authors.forename: Mula G Meena
authors.initials: MG
authors.lastname: Lakshmi
authors.forename: Vuppalapaty
authors.initials: V
authors.lastname: Meghah
authors.forename: Bhawna
authors.initials: B
authors.lastname: Bhatti
authors.forename: Cherukuvada V Brahmendra
authors.initials: CV
authors.lastname: Swamy
authors.forename: Curam S
authors.initials: CS
authors.lastname: Sundaram
authors.forename: Mohammed M
authors.initials: MM
authors.lastname: Idris
mesh_terms: D058500:Animal Fins / Q000378:metabolism* / Q000502:physiology; D000818:Animals; D017305:Annexin A1 / Q000378:metabolism; D003599:Cytoskeleton / Q000378:metabolism; D005260:Female; D005786:Gene Expression Regulation; D007111:Immunity, Cellular; D007382:Intermediate Filaments / Q000235:genetics / Q000378:metabolism; D007633:Keratins / Q000235:genetics / Q000378:metabolism; D008297:Male; D053858:Metabolic Networks and Pathways; D010766:Phosphorylation; D020033:Protein Isoforms / Q000235:genetics / Q000378:metabolism; D020543:Proteome / Q000235:genetics / Q000378:metabolism*; D040901:Proteomics; D060888:Real-Time Polymerase Chain Reaction; D012038:Regeneration; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization; D053719:Tandem Mass Spectrometry; D014158:Transcription, Genetic; D057825:Two-Dimensional Difference Gel Electrophoresis; D015027:Zebrafish; D029961:Zebrafish Proteins / Q000235:genetics / Q000276:immunology / Q000378:metabolism*
chemical_list: D017305:Annexin A1; D020033:Protein Isoforms; D020543:Proteome; D029961:Zebrafish Proteins; D007633:Keratins