Ikusasa Lezokwelapha Nge-Biomedicine Kwezokwelapha Ezivuselelayo
Imithi yokuvuselela ingenye yezinkambu ezishintshashintshayo nezintsha kakhulu kwisayensi yezokwelapha yanamuhla. Ngokuthuthuka okusheshayo kwezobuchwepheshe bezokwelapha, emashumini eminyaka ezayo, cishe sizobona inguquko endleleni esibhekana ngayo nokuxilongwa, ukwelashwa, kanye nokwelashwa kwezifo ezahlukahlukene. Lesi sihloko sizohlola ikusasa elingaba khona lemithi yokuvuselela, okuhlanganisa intuthuko kwezokwelapha ngamaseli, amasu obunjiniyela bezicubu , kanye nendima ye-3D bioprinting.
Ukwelashwa Kwamaselula
Enye yezinsika eziyinhloko zokwelapha kabusha ukwelashwa kwamaseli. Le nqubo ihilela ukulungisa noma ukufaka esikhundleni izicubu ezonakele kusetshenziswa amaseli aphilayo. Izinhlobo ezimbili eziyinhloko zamaseli ezisekela lokhu kwelashwa amaseli e-mesenchymal stem (MSCs) kanye namaseli e-incuted pluripotent stem (iPSCs).
Amaseli Esiqu se-Mesenchymal (ama-MSC)
Ama-MSC angamaseli okuqala atholakala ezicutshini eziningi, okuhlanganisa amathambo, imisipha, namafutha. Anamandla amakhulu okuvuselelwa ngenxa yekhono lawo lokuhlukanisa izinhlobo ezahlukene zamaseli futhi anikeze izimpawu ezisekela ukulungiswa kwezicubu. Izifundo zamanje ziphakamisa ukuthi ama-MSC angasetshenziswa ukwelapha izimo ezahlukahlukene, kusukela esifweni senhliziyo kuya ekulimaleni komgogodla.
Amaseli E-Pluripotent Stem Cells (ama-iPSC) Akhiqizwe Nge-Induced Pluripotent Stem Cells (ama-iPSC)
Amaseli okuqala e-pluripotent ashukunyiswayo ashintsha umdlalo kwezokwelapha okuvuselelayo. Lawa maseli adalwa ngokuguqula amaseli amadala, njengamaseli esikhumba, abuyele esimweni se-pluripotent, okuwavumela ukuthi aguquke abe yiluphi uhlobo lweseli emzimbeni. Ama-iPSC anika amandla amathuba angenamkhawulo, kusukela ekudaleni izicubu ezintsha kuya ekuthuthukiseni izindlela zokwelapha zofuzo ezenzelwe wena. Ngenxa yokuthi atholakala kumaseli atholakala esigulini, ama-iPSC anganciphisa nengozi yokwenqatshwa kwamasosha omzimba.
Amasu Obunjiniyela Benethiwekhi
Ubunjiniyela bezicubu yinqubo yokukhulisa izicubu ezintsha elabhorethri. Le ndlela ihilela ukusebenzisa i-scaffold, noma uhlaka oluhambisana ne-bio, ukuqondisa ukukhula kwamaseli. Enye intuthuko yakamuva ukudalwa kwezitho ezincane, noma ama-organoids, angasetshenziswa ukutadisha izifo nokuhlola imithi emisha.
Izikhafu kanye nezinto eziphilayo
I-scaffold iwuhlaka olusekelayo olusetshenziselwa ukukhuthaza ukukhula kwamaseli abe yizicubu ezisebenzayo. Izinto ze-scaffold zingaba ama-polymer okwenziwa noma emvelo okumele ahambisane ne-bio futhi asekele ukwanda kwamaseli kanye nokwehlukaniswa kwawo. Ucwaningo lwamuva lugxile ezintweni ze-scaffold ezisabela endaweni yazo futhi zizilungise ngokuhamba kwesikhathi.
I-Organoid
Ama-Organoids ayizakhiwo ezincane zezitho ezikhuliswe ngamaseli okuqala elabhorethri. Ama-Organoids asetshenziswe ukutadisha izifo ezahlukahlukene, kusukela kumdlavuza kuya ezinkingeni zemizwa. Isibonelo, ama-organoids obuchopho asetshenziswe ukuqonda ukuqhubeka kwesifo i-Alzheimer's. Inani elikhulayo lezikhungo zocwaningo lakha imitapo yolwazi yama-organoids ukuze isetshenziswe abacwaningi emhlabeni jikelele.
Ukuphrinta kwe-Bio 3D
I-bioprinting ye-3D iyindlela eguqula umuthi ngokunyathelisa kancane kancane izicubu nezitho zomzimba kusetshenziswa amaseli nezinto ezihambisana ne-bio. Ngokuthuthuka kwephrinta ye-3D kanye nobuchwepheshe be-bioink, manje sekungenzeka ukunyathelisa izicubu eziyinkimbinkimbi ezingasetshenziswa ekuhlolweni kwemithi ngisho nokufakelwa izitho.
I-Bioink
I-Bioink iyinto eyisisekelo ekuphrinteni nge-bio, equkethe amaseli kanye ne-extracellular matrix ephrintiwe ungqimba ngengqimba. Izakhiwo ze-Bioink zibalulekile ekuphrinteni nge-bio ephumelelayo, njenge-viscosity, amandla omshini, kanye nokuhambisana kwe-bio. Ucwaningo lwakamuva lugxile ekwakheni ama-bioink asebenza kahle kakhulu ekusekeleni amaseli aphilayo nasekukhuthazeni ukuhlukaniswa kwamaseli.
Ukuphrinta Kwenethiwekhi Eyinkimbinkimbi
Enye yezinselele ekunyathelisweni kwe-bio ukukhiqiza izicubu eziyinkimbinkimbi nezisebenzayo. Lokhu kudinga ukudalwa kwezakhiwo zemithambo yegazi ezinganikeza izakhamzimba nomoya-mpilo kuzo zonke izicubu. Intuthuko ebuchwephesheni bokunyathelisa ngezinto eziningi kanye nomklamo wekhompyutha oyinkimbinkimbi kuvumela ukunyatheliswa kwezicubu eziyinkimbinkimbi ngokwengeziwe eduze neqiniso lezokwelapha.
Ukuphumelela Okungaba Khona Emithini Yokuvuselela
Ukwelashwa Kwezifo Eziwohlokayo Zezinzwa
Izifo eziwohloka ngenxa ye-neurodegenerative, njenge-Alzheimer's kanye ne-Parkinson's, kunzima kakhulu ukuzelapha ngenxa yomonakalo ongenakuguqulwa kumaseli ezinzwa. Kodwa-ke, ngentuthuko kwezokwelapha ngamaseli kanye nobunjiniyela bezicubu, singase sikwazi ukuthuthukisa izindlela zokufaka esikhundleni sama-neurons alahlekile nokubuyisela ukusebenza okuvamile kobuchopho. Ukusetshenziswa kwama-organoids obuchopho ukuqonda i-pathophysiology yalezi zifo kunikeza nethemba elisha lentuthuko yokwelapha.
Ukwelapha Izitho Zesibindi
Isibindi sinamandla okuvuselela amangalisayo, kodwa izifo ezifana ne-cirrhosis zingabuthakatha lesi sitho. Ukwelashwa ngamaseli kusetshenziswa ama-MSC nama-stem cell kungasiza ekulungiseni izicubu zesibindi ezonakele futhi kubuyisele ukusebenza kwesibindi. Ngaphezu kwalokho, isibindi esincane esiprintwa nge-bioprinting singasetshenziswa ekuhlolweni kwezidakamizwa, kusheshiswe inqubo yokutholakala kwemithi emisha futhi kuthuthukiswe ukuphepha kwesiguli.
Ukufakwa Kwesitho Somzimba
Ukuntuleka kwezitho zangasese ezinikelayo kuyinkinga enkulu emhlabeni wonke. Ngentuthuko ekunyathelisweni kwezinto eziphilayo kanye nobunjiniyela bezicubu, kungase kwenzeke ngolunye usuku ukunyathelisa izitho ezisebenzayo ezilungele ukufakelwa. Lokhu ngeke nje kuxazulule ukushoda kwezitho zangasese kodwa futhi kunciphise nengozi yokwenqatshwa, njengoba izitho zangasese ezinyathelisiwe zingalungiswa ngokuvumelana namaseli esiguli.
Izinselele Nekusasa
Nakuba amandla okwelapha okuvuselelayo enkulu kakhulu, kusenezinselele eziningana. Ukuthuthukisa izindlela zokwelapha eziphephile nezisebenzayo kudinga ucwaningo olwengeziwe kanye nokuhlolwa okuqinile kwezokwelapha. Izinkinga zokuziphatha kumele zicatshangelwe, ikakhulukazi uma kusetshenziswa amaseli e-stem abantu.
Ngaphezu kwalokho, kudingeka imithetho eqinile ukuqinisekisa ukuthi izindlela ezintsha zokwelapha ziphephile futhi ziyasebenza ngaphambi kokusetshenziswa kabanzi. Kodwa-ke, ngokubambisana phakathi kwemikhakha ehlukahlukene kanye nokutshalwa kwezimali ocwaningweni, ikusasa lemithi yokuvuselela libukeka liqhakazile.
Ekuphetheni, ikusasa lemithi yokuvuselela yezokwelapha lithembisa kakhulu. Ngokuthuthuka kokwelashwa kwamaseli, amasu obunjiniyela bezicubu, kanye nobuchwepheshe be-bioprinting be-3D, siseduze noguquko endleleni esisebenzisa ngayo izifo nokulimala. Izinselele ziyinkimbinkimbi, kodwa ngokusebenza kanzima kanye nokusungula izinto ezintsha okuqhubekayo, imithi yokuvuselela ingaguqula indlela yokwelapha futhi ithuthukise ikhwalithi yokuphila kwezigidi zabantu emhlabeni jikelele.
