{"title":"Go ahead, grow a head! A planarian's guide to anterior regeneration.","authors":"Suthira Owlarn, Kerstin Bartscherer","doi":"10.1002/reg2.56","DOIUrl":null,"url":null,"abstract":"<p><p>The unique ability of some planarian species to regenerate a head de novo, including a functional brain, provides an experimentally accessible system in which to study the mechanisms underlying regeneration. Here, we summarize the current knowledge on the key steps of planarian head regeneration (head-versus-tail decision, anterior pole formation and head patterning) and their molecular and cellular basis. Moreover, instructive properties of the anterior pole as a putative organizer and in coordinating anterior midline formation are discussed. Finally, we highlight that regeneration initiation occurs in a two-step manner and hypothesize that wound-induced and existing positional cues interact to detect tissue loss and together determine the appropriate regenerative outcomes.</p>","PeriodicalId":90316,"journal":{"name":"Regeneration (Oxford, England)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2016-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/reg2.56","citationCount":"53","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Regeneration (Oxford, England)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1002/reg2.56","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2016/6/1 0:00:00","PubModel":"eCollection","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 53
Abstract
The unique ability of some planarian species to regenerate a head de novo, including a functional brain, provides an experimentally accessible system in which to study the mechanisms underlying regeneration. Here, we summarize the current knowledge on the key steps of planarian head regeneration (head-versus-tail decision, anterior pole formation and head patterning) and their molecular and cellular basis. Moreover, instructive properties of the anterior pole as a putative organizer and in coordinating anterior midline formation are discussed. Finally, we highlight that regeneration initiation occurs in a two-step manner and hypothesize that wound-induced and existing positional cues interact to detect tissue loss and together determine the appropriate regenerative outcomes.