細(xi)胞(bao)基(ji)因(yin)治療(liao)是生物醫藥(yao)領域(yu)的前沿陣地,它通過對細(xi)胞(bao)或基(ji)因(yin)進行(xing)改造、修飾(shi)、調控,來(lai)糾正或補(bu)償因(yin)基(ji)因(yin)缺(que)陷和異常引(yin)起的疾病(bing)(bing),為傳統療(liao)法難以攻克的疑(yi)難病(bing)(bing)癥,如遺傳性(xing)疾病(bing)(bing)、某(mou)些(xie)癌癥、自(zi)身(shen)免(mian)疫性(xing)疾病(bing)(bing)等,帶來(lai)了(le)新(xin)的治愈(yu)希望。
干細(xi)(xi)胞療法是細(xi)(xi)胞基因治療的重要分(fen)支。干細(xi)(xi)胞具備(bei)自(zi)我更(geng)新和(he)多向分(fen)化潛能,能分(fen)化成多種功能細(xi)(xi)胞,修(xiu)復受(shou)損(sun)組織和(he)器官。間(jian)充質干細(xi)(xi)胞(MSC)是其(qi)中備(bei)受(shou)關注的類(lei)型,具有免疫調節(jie)、抗(kang)炎、促(cu)進(jin)組織修(xiu)復等特性。在臨床應用(yong)中,MSC 已(yi)被嘗試用(yong)于治療多種疾病,如移植(zhi)物抗(kang)宿主病、骨關節(jie)炎、心肌(ji)梗死等,通過(guo)調節(jie)免疫微環境(jing)、促(cu)進(jin)組織再生等機制發揮治療作用(yong)。
誘(you)導多(duo)(duo)能干細(xi)(xi)(xi)(xi)胞(bao)(bao)(iPSC)細(xi)(xi)(xi)(xi)胞(bao)(bao)療(liao)法是另一項(xiang)創新性突破。iPSC 由成(cheng)體(ti)細(xi)(xi)(xi)(xi)胞(bao)(bao)經重(zhong)編程獲(huo)得,擁有類(lei)似胚(pei)胎干細(xi)(xi)(xi)(xi)胞(bao)(bao)的多(duo)(duo)能性。它(ta)克服(fu)了胚(pei)胎干細(xi)(xi)(xi)(xi)胞(bao)(bao)來源的倫理問題,可(ke)根據患者自身細(xi)(xi)(xi)(xi)胞(bao)(bao)定制,降(jiang)低免(mian)疫排斥風險。iPSC 能分化為(wei)各類(lei)細(xi)(xi)(xi)(xi)胞(bao)(bao),用于疾病(bing)建(jian)模(mo)、藥物(wu)篩選以(yi)及(ji)細(xi)(xi)(xi)(xi)胞(bao)(bao)移植治(zhi)(zhi)療(liao),為(wei)帕金森(sen)病(bing)、糖尿病(bing)等疾病(bing)的治(zhi)(zhi)療(liao)帶來新曙光。
基(ji)(ji)(ji)(ji)因(yin)遞送(song)(song)(song)技術則是細(xi)胞基(ji)(ji)(ji)(ji)因(yin)治(zhi)療(liao)的(de)關(guan)鍵支撐。它負(fu)責將治(zhi)療(liao)性(xing)(xing)(xing)(xing)基(ji)(ji)(ji)(ji)因(yin)安全(quan)(quan)、效(xiao)率高地(di)遞送(song)(song)(song)至靶細(xi)胞。轉染(ran)試劑是基(ji)(ji)(ji)(ji)因(yin)遞送(song)(song)(song)常用工具之一,通過特定機制將外源基(ji)(ji)(ji)(ji)因(yin)導入細(xi)胞。基(ji)(ji)(ji)(ji)因(yin)遞送(song)(song)(song)技術面臨遞送(song)(song)(song)效(xiao)率、靶向性(xing)(xing)(xing)(xing)、安全(quan)(quan)性(xing)(xing)(xing)(xing)等(deng)挑戰,理想的(de)遞送(song)(song)(song)系統需準確(que)地(di)將基(ji)(ji)(ji)(ji)因(yin)遞送(song)(song)(song)至病(bing)變細(xi)胞,避(bi)免脫(tuo)靶效(xiao)應(ying),同時不(bu)引發免疫反(fan)應(ying)和毒(du)性(xing)(xing)(xing)(xing)。病(bing)毒(du)載體(ti)(如(ru)腺(xian)相關(guan)病(bing)毒(du)載體(ti))和非(fei)病(bing)毒(du)載體(ti)(如(ru)脂質納米顆粒)是目前主流的(de)基(ji)(ji)(ji)(ji)因(yin)遞送(song)(song)(song)載體(ti),科研人(ren)員不(bu)斷優(you)化載體(ti)設計,以提升基(ji)(ji)(ji)(ji)因(yin)治(zhi)療(liao)的(de)有效(xiao)性(xing)(xing)(xing)(xing)和安全(quan)(quan)性(xing)(xing)(xing)(xing)。
細(xi)胞(bao)基因(yin)治(zhi)療憑借(jie)干細(xi)胞(bao)療法、iPSC 細(xi)胞(bao)療法和基因(yin)遞送技術等不斷發展,有(you)望為更多難治(zhi)性疾病(bing)提供治(zhi)愈方案,變革(ge)未來醫學(xue)格局。