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Biomaterials:新型多功能复合纳米材料可用于骨骼肌的再生

2017-12-17 MedSci MedSci原创

人造肌样生物材料由于其在再生医学,可穿戴设备,生物电子学以及人工智能等方面的广泛应用而引起了研究人员的极大兴趣。然而,其在仿生粘弹性、生物相容性和生物降解性以及多功能性防线的缺陷限制了其应用。本研究中,研究人员首次研发了高弹性、导电并可生物降解的聚(柠檬酸-辛二醇-聚乙二醇)(PCE)-石墨烯(PCEG)纳米复合材料,并展示了其在肌原性分化和引导骨骼肌组织再生中的应用。在PCEG纳米复合材料中,P

人造肌样生物材料由于其在再生医学,可穿戴设备,生物电子学以及人工智能等方面的广泛应用而引起了研究人员的极大兴趣。然而,其在仿生粘弹性、生物相容性和生物降解性以及多功能性防线的缺陷限制了其应用。本研究中,研究人员首次研发了高弹性、导电并可生物降解的聚(柠檬酸-辛二醇-聚乙二醇)(PCE)-石墨烯(PCEG)纳米复合材料,并展示了其在肌原性分化和引导骨骼肌组织再生中的应用。

在PCEG纳米复合材料中,PCE提供了仿生弹性行为,并且还原型氧化石墨烯(RGO)赋予了材料更强的机械强度和导电性。材料的高弹性行为明显提高了PCEG纳米复合材料的模量(400%-800%)和强度(200%-300%),并获得了可控生物降解性和电化学导电性。PCEG纳米复合材料可显著提高成肌细胞的增殖和成肌分化。将PCEG纳米复合材料植入大鼠皮下组织,4周后观察发现材料的体内生物相容性较高。PCEG纳米复合材料可显著增强骨骼肌损伤大鼠模型的体内肌肉纤维和血管的形成。

综上所述,该研究为开发高生物相容性的多功能弹性体纳米复合材料提供一个新的战略,以用于软组织再生和可拉伸的生物电子器件。

原始出处:

Du Y, Ge J, et al., Biomimetic elastomeric, conductive and biodegradable polycitrate-based nanocomposites for guiding myogenic differentiation and skeletal muscle regeneration. Biomaterials. 2017 Dec 6;157:40-50. doi: 10.1016/j.biomaterials.2017.12.005.

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    2018-11-06 sunylz
  3. [GetPortalCommentsPageByObjectIdResponse(id=2049990, encodeId=5a872049990fa, content=<a href='/topic/show?id=cbdd3451e3' target=_blank style='color:#2F92EE;'>#Biomaterials#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=68, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3451, encryptionId=cbdd3451e3, topicName=Biomaterials)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d8e0333, createdName=zhangyxzsh, createdTime=Mon Jul 23 20:28:00 CST 2018, time=2018-07-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1917842, encodeId=9d96191e842b8, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=59, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Tue Nov 06 03:28:00 CST 2018, time=2018-11-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=271000, encodeId=15102e100043, content=很好, beContent=null, objectType=article, channel=null, level=null, likeNumber=99, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib2emBzjO0FtqTJ05AqrEEdRmp6tmlsLXqpzfxWdtgbbgPGWRHagoK9fLTd3IayRPgkJVIVBWtdlmnkBhOIR4cFM/0, createdBy=e8d51649330, createdName=飘飘爱, createdTime=Wed Dec 20 21:40:03 CST 2017, time=2017-12-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1333070, encodeId=488613330e046, content=<a href='/topic/show?id=4339101926f4' target=_blank style='color:#2F92EE;'>#骨骼肌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=51, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=101926, encryptionId=4339101926f4, topicName=骨骼肌)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTIuNQXObUwZmFG3VcZa2uhFq27sY7vfTowUhQCgRj2bj1odUibMF4sFXpuRLf6IE5t5yGVDSiaOoOcQ/132, createdBy=1e622500088, createdName=ms1065684921169360, createdTime=Tue Dec 19 11:28:00 CST 2017, time=2017-12-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1479479, encodeId=61c114e947960, content=<a href='/topic/show?id=1e30e739295' target=_blank style='color:#2F92EE;'>#纳米材料#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=85, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77392, encryptionId=1e30e739295, topicName=纳米材料)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=cde87531954, createdName=12498710m13暂无昵称, createdTime=Tue Dec 19 11:28:00 CST 2017, time=2017-12-19, status=1, ipAttribution=)]
    2017-12-20 飘飘爱

    很好

    0

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局部心肌内注射蛋白质进入心肌梗死部位是心肌梗死后启动心肌再生的一个很好地治疗方法。已知利拉鲁肽是用于治疗2型糖尿病的药物,且是心肌再生的明星蛋白质之一。但是使用这种蛋白质治疗所面临的一个重大挑战是它在体内的半衰期很短。本实验旨在评估实验性心肌梗死中使用聚(乳酸-羟基乙酸)–聚(乙二醇)(PLGA–PEG)纳米粒(NP-利拉鲁肽)负载利拉鲁肽的治疗效果以及药物的长时间存留情况。结果显示,PLGA–P

Int J Nanomed:纳米材料联合银粒子可显著提高其抗菌效果

由于临床治疗中长期使用和滥用抗生素,使得抗生素耐药性成为一个亟需解决的问题。联合抗生素与银纳米颗粒的治疗是提高抗菌效果同时减少抗生素使用的一种有效方法。虽然体外研究已经证明该方法是有效的,但目前尚未进行体内试验。本文旨在探究大鼠感染模型中Ag局部给药并联合全身抗生素用药的作用。在钛植体表面制备载银纳米粒子二氧化钛纳米管,以用于银离子的缓释。分别在体外使用最低抑菌浓度(MIC)分析、纸片扩散法,以及

Int J Nanomed:oMCN@PEG可作为高效抗癌药物递送载体使用

在这项研究中,研究人员成功地制备了一种基于聚乙二醇化氧化介孔碳纳米球(oMCN@PEG)的高效跨膜药物传递载体,是一种简便易行的策略。检测分析显示,oMCN@PEG的尺寸分布范围较小,为90nm左右,亲水性优异,还具有良好的生物相容性以及非常高的阿霉素(DOX)加载效率。载药系统(oMCN@DOX@PEG)在中性pH条件下表现出优异的稳定性,但是pH降低的条件下具有明显的DOX释放。药代动力学研究

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