細胞(bao)基因治(zhi)療(liao)(liao)是生物醫藥領域的前沿陣地,它(ta)通過(guo)對細胞(bao)或基因進行改造、修(xiu)飾、調控,來糾正或補償(chang)因基因缺陷(xian)和(he)異常引起(qi)的疾病(bing),為傳(chuan)統療(liao)(liao)法難(nan)以(yi)攻克的疑(yi)難(nan)病(bing)癥,如遺傳(chuan)性疾病(bing)、某些(xie)癌癥、自(zi)身免疫性疾病(bing)等,帶來了新的治(zhi)愈希(xi)望。
干細胞(bao)(bao)療(liao)(liao)法是(shi)細胞(bao)(bao)基因治(zhi)療(liao)(liao)的重要分支。干細胞(bao)(bao)具備自我(wo)更新(xin)和(he)多(duo)向分化(hua)潛(qian)能,能分化(hua)成多(duo)種(zhong)(zhong)功能細胞(bao)(bao),修復受(shou)損組織和(he)器(qi)官。間(jian)充質干細胞(bao)(bao)(MSC)是(shi)其中備受(shou)關(guan)注的類(lei)型,具有(you)免疫調節、抗(kang)炎、促進組織修復等(deng)特性。在(zai)臨床應用(yong)中,MSC 已(yi)被嘗試用(yong)于治(zhi)療(liao)(liao)多(duo)種(zhong)(zhong)疾病(bing),如移植物抗(kang)宿主病(bing)、骨關(guan)節炎、心肌梗死等(deng),通(tong)過調節免疫微環(huan)境(jing)、促進組織再生等(deng)機制發揮治(zhi)療(liao)(liao)作用(yong)。
誘導多(duo)能(neng)干細(xi)(xi)胞(bao)(bao)(iPSC)細(xi)(xi)胞(bao)(bao)療(liao)法(fa)是(shi)另一項創新(xin)性(xing)突(tu)破。iPSC 由(you)成體(ti)細(xi)(xi)胞(bao)(bao)經重編程獲得,擁有類(lei)似胚胎(tai)干細(xi)(xi)胞(bao)(bao)的多(duo)能(neng)性(xing)。它克服了胚胎(tai)干細(xi)(xi)胞(bao)(bao)來源(yuan)的倫理問題,可根據患者自(zi)身細(xi)(xi)胞(bao)(bao)定制(zhi),降低免疫(yi)排(pai)斥風(feng)險。iPSC 能(neng)分(fen)化為各類(lei)細(xi)(xi)胞(bao)(bao),用(yong)于疾病建模、藥(yao)物篩(shai)選(xuan)以及(ji)細(xi)(xi)胞(bao)(bao)移植(zhi)治療(liao),為帕金森病、糖尿病等疾病的治療(liao)帶來新(xin)曙光(guang)。
基(ji)(ji)(ji)因(yin)(yin)(yin)(yin)(yin)遞(di)(di)(di)送(song)(song)(song)技術則是細胞(bao)(bao)基(ji)(ji)(ji)因(yin)(yin)(yin)(yin)(yin)治(zhi)療(liao)的(de)關鍵支(zhi)撐。它負責將治(zhi)療(liao)性(xing)基(ji)(ji)(ji)因(yin)(yin)(yin)(yin)(yin)安全、效(xiao)率高地遞(di)(di)(di)送(song)(song)(song)至靶(ba)細胞(bao)(bao)。轉染試劑是基(ji)(ji)(ji)因(yin)(yin)(yin)(yin)(yin)遞(di)(di)(di)送(song)(song)(song)常用(yong)工(gong)具(ju)之一(yi),通過特定機制將外(wai)源基(ji)(ji)(ji)因(yin)(yin)(yin)(yin)(yin)導入細胞(bao)(bao)。基(ji)(ji)(ji)因(yin)(yin)(yin)(yin)(yin)遞(di)(di)(di)送(song)(song)(song)技術面臨遞(di)(di)(di)送(song)(song)(song)效(xiao)率、靶(ba)向性(xing)、安全性(xing)等挑戰,理想的(de)遞(di)(di)(di)送(song)(song)(song)系統需準確(que)地將基(ji)(ji)(ji)因(yin)(yin)(yin)(yin)(yin)遞(di)(di)(di)送(song)(song)(song)至病變細胞(bao)(bao),避免脫靶(ba)效(xiao)應,同時不(bu)引發免疫反(fan)應和(he)毒性(xing)。病毒載(zai)(zai)體(ti)(如腺(xian)相關病毒載(zai)(zai)體(ti))和(he)非病毒載(zai)(zai)體(ti)(如脂質納(na)米顆粒)是目前主流的(de)基(ji)(ji)(ji)因(yin)(yin)(yin)(yin)(yin)遞(di)(di)(di)送(song)(song)(song)載(zai)(zai)體(ti),科研人員不(bu)斷優化載(zai)(zai)體(ti)設(she)計,以(yi)提升基(ji)(ji)(ji)因(yin)(yin)(yin)(yin)(yin)治(zhi)療(liao)的(de)有效(xiao)性(xing)和(he)安全性(xing)。
細(xi)胞基因治(zhi)療憑借干(gan)細(xi)胞療法(fa)、iPSC 細(xi)胞療法(fa)和基因遞送技術(shu)等不斷(duan)發展,有(you)望(wang)為(wei)更(geng)多難治(zhi)性疾病提供治(zhi)愈方(fang)案,變革未(wei)來醫學格(ge)局。