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Wound-induced cell proliferation during animal regeneration.
WIREs Mechanisms of Disease ( IF 3.1 ) Pub Date : 2018-05-02 , DOI: 10.1002/wdev.321
Lorenzo Ricci 1 , Mansi Srivastava 1
Affiliation  

Many animal species are capable of replacing missing tissues that are lost upon injury or amputation through the process of regeneration. Although the extent of regeneration is variable across animals, that is, some animals can regenerate any missing cell type whereas some can only regenerate certain organs or tissues, regulated cell proliferation underlies the formation of new tissues in most systems. Notably, many species display an increase in proliferation within hours or days upon wounding. While different cell types proliferate in response to wounding in various animal taxa, comparative molecular data are beginning to point to shared wound‐induced mechanisms that regulate cell division during regeneration. Here, we synthesize current insights about early molecular pathways of regeneration from diverse model and emerging systems by considering these species in their evolutionary contexts. Despite the great diversity of mechanisms underlying injury‐induced cell proliferation across animals, and sometimes even in the same species, similar pathways for proliferation have been implicated in distantly related species (e.g., small diffusible molecules, signaling from apoptotic cells, growth factor signaling, mTOR and Hippo signaling, and Wnt and Bmp pathways). Studies that explicitly interrogate molecular and cellular regenerative mechanisms in understudied animal phyla will reveal the extent to which early pathways in the process of regeneration are conserved or independently evolved.

中文翻译:

动物再生过程中伤口引起的细胞增殖。

许多动物能够通过再生过程替换因受伤或截肢而丢失的缺失组织。尽管整个动物的再生程度各不相同,也就是说,某些动物可以再生任何缺失的细胞类型,而某些动物只能再生某些器官或组织,但受调节的细胞增殖是大多数系统中新组织形成的基础。值得注意的是,许多物种在受伤后数小时或数天内显示出增殖的增加。虽然各种动物类群中不同类型的细胞会因创伤而增生,但比较分子数据开始指向共享的伤口诱导机制,这些机制在再生过程中调节细胞分裂。这里,我们通过在进化背景下考虑这些物种,综合了有关从各种模型和新兴系统再生的早期分子途径的最新见解。尽管损伤诱导的动物跨动物增殖的机制千差万别,有时甚至在同一物种中,但相距甚远的物种也存在相似的增殖途径(例如,小的可扩散分子,凋亡细胞的信号传导,生长因子信号传导, mTOR和Hippo信号以及Wnt和Bmp途径)。明确询问未充分研究的动物门中分子和细胞再生机制的研究将揭示在再生过程中早期途径被保守或独立进化的程度。尽管损伤诱导的动物跨动物增殖的机制千差万别,有时甚至在同一物种中,但相距甚远的物种也存在相似的增殖途径(例如,小的可扩散分子,凋亡细胞的信号传导,生长因子信号传导, mTOR和Hippo信号以及Wnt和Bmp途径)。明确询问未充分研究的动物门中分子和细胞再生机制的研究将揭示在再生过程中早期途径被保守或独立进化的程度。尽管损伤诱导的动物跨动物增殖的机制千差万别,有时甚至在同一物种中,但相距甚远的物种也存在相似的增殖途径(例如,小的可扩散分子,凋亡细胞的信号传导,生长因子信号传导, mTOR和Hippo信号以及Wnt和Bmp途径)。明确询问未充分研究的动物门中分子和细胞再生机制的研究将揭示在再生过程中早期途径被保守或独立进化的程度。细胞凋亡信号,生长因子信号,mTOR和Hippo信号以及Wnt和Bmp途径)。明确询问未充分研究的动物门中分子和细胞再生机制的研究将揭示在再生过程中早期途径被保守或独立进化的程度。细胞凋亡信号,生长因子信号,mTOR和Hippo信号以及Wnt和Bmp途径)。明确询问未充分研究的动物门中分子和细胞再生机制的研究将揭示在再生过程中早期途径被保守或独立进化的程度。
更新日期:2018-05-02
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