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Inzheneriya nervovoyi tkanini abo nejrotkaninna inzheneriya ce galuz tkaninnoyi inzheneriyi yaka zoseredzhena na rozrobci funkcionalnih zaminnikiv nervovoyi tkanini dlya zamini abo vidnovlennya poshkodzhenoyi abo hvoroyi tkanini centralnoyi nervovoyi sistemi CNS abo periferichnoyi nervovoyi sistemi PNS 2 Metoyu inzheneriyi nervovoyi tkanini ye vidnovlennya vtrachenoyi funkciyi nervovoyi sistemi za dopomogoyu pobudovi novoyi nervovoyi tkanini iz specialnih materialiv klitin i faktoriv rostu 3 4 dlya tranplantuvannya v miscya defektu source source source source source source source Animacijna 3D rekonstrukciya transplantata klitin lt NES gipokampa mRFP1 chervonij sho pokazuye vhidni nejroni EGFP gospodarya zelenij u medialnomu septalnomu kompleksi entorinalnij kori sektori CA1 a takozh u shidnomu shari gipokampa 1 Cya oblast doslidzhennya vklyuchaye v sebe principi materialoznavstva biologiyi ta inzheneriyi dlya proektuvannya ta rozrobki pristroyiv karkasiv z biomaterialiv i 3D kultur yaki spriyayut rostu vizhivannyu ta funkcionalnij integraciyi nejroniv i glialnih klitin Deyaki iz zastosuvan nejrotkaninnoyi inzheneriyi vklyuchayut likuvannya travm spinnogo mozku cherepno mozkovih travm insultu hvorobi Parkinsona ta inshih staniv yaki prizvodyat do poshkodzhennya nervovoyi sistemi chi yiyi vikovoyi degeneraciyi Rozvitok nejrotkaninnoyi inzheneriyi potrebuye mizhdisciplinarnogo pidhodu yakij peredbachaye spivpracyu mizh inzhenerami nevrologami ta klinicistami dlya peretvorennya laboratornih rezultativ u klinichne zastosuvannya Zmist 1 Oglyad 2 Centralna nervova sistema CNS 2 1 Prichini urazhennya CNS 2 2 Likuvannya ta doslidzhennya CNS 2 2 1 Implantaciya stovburovih klitin na misce poshkodzhennya 2 2 2 Dostavka molekul do miscya poshkodzhennya 2 2 3 Cilespryamovana reinnervaciya 2 2 4 Implantaciya nervovoyi tkanini rozroblenoyi in vitro 3 Periferichna nervova sistema PNS 3 1 Prichini urazhennya PNS 3 2 Likuvannya ta doslidzhennya PNS 3 2 1 Hirurgichne z yednannya 3 2 2 Peresadki tkanin 3 2 3 Navedennya 3 2 4 Cilespryamovana reinnervaciya 4 Pov yazani doslidzhennya 4 1 Modelyuvannya rozvitku tkanin mozku in vitro 4 1 1 Cerebralni organoyidi 4 1 1 1 Organoyidnij intelekt 4 2 Doslidzhennya in vivo 4 2 1 Transplantaciya organoyidiv 5 Div takozh 6 Literatura 6 1 Knigi 6 2 Zhurnali 6 3 Statti 7 Posilannya 7 1 Video 8 PrimitkiOglyad RedaguvatiNervova sistema podilyayetsya na dva viddili CNS i PNS CNS skladayetsya z golovnogo ta spinnogo mozku todi yak PNS skladayetsya z nerviv yaki pohodyat vid golovnogo ta spinnogo mozku ta innervuyut reshtu tila 5 Potreba v inzheneriyi nervovoyi tkanini yak okremoyi galuzi vinikaye cherez skladnist nervovih klitin i nervovoyi tkanini vidnovlyuvatisya samostijno pislya poshkodzhennya nervovoyi sistemi PNS maye pevnu ale obmezhenu regeneraciyu nervovih klitin Bulo viyavleno sho nejrogenez doroslih stovburovih klitin u CNS vidbuvayetsya v gipokampi subventrikulyarnij zoni SVZ i spinnomu mozku 6 Doslidzhennya 2020 go roku pokazalo takozh nejrogenez u doroslih u inshih zonah mozku zokrema vgipotalamusi smugastomu tili chornij substanciyi kori golovnogo mozku ta migdalini 1 Poshkodzhennya CNS mozhut buti viklikani insultom nejrodegenerativnimi rozladami travmoyu abo encefalopatiyeyu Nini doslidzhuyutsya kilka metodiv likuvannya poshkodzhen CNS 7 implantaciya stovburovih klitin bezposeredno v misce poshkodzhennya dostavka morfogeniv do miscya poshkodzhennya viroshuvannya nervovoyi tkanini in vitro z nejronnimi stovburovimi abo klitinami poperednikami v 3D karkasi Zaproponovane vikoristannya elektropryadenih polimernih voloknistih karkasiv dlya nejronnih substrativ vidnovlennya datuyetsya shonajmenshe 1986 rokom u zayavci NIH SBIR vid Simon 8 Dlya PNS vidirvanij nerv mozhna povtorno z yednati ta povtorno innervuvati za dopomogoyu transplantativ abo spryamuvannya isnuyuchogo nerva cherez kanal 5 Neshodavni doslidzhennya stvorennya miniatyurnoyi kori golovnogo mozku vidomoyi yak kortikopoez i modelej mozku vidomih yak cerebralni organoyidi ye metodami yaki mozhut spriyati rozvitku regeneraciyi nervovoyi tkanini Prirodni kortikalni poperedniki kortikopoezu ce nervovi tkanini yaki mozhut buti efektivno vbudovani v mozok 9 Cerebralni organoyidi ce trivimirni plyuripotentni stovburovi klitini lyudini rozvineni v sekciyi kori golovnogo mozku sho svidchit pro nayavnist potencialu dlya izolyaciyi ta rozvitku pevnih nervovih tkanin za dopomogoyu nejronnih poperednikiv 10 Doslidzhennya 2023 roku pokazalo sho organoyidi lyudskogo mozku uspishno integruyutsya iz zorovoyu sistemoyu doroslogo shura pislya transplantaciyi u veliki poshkodzheni porozhnini zorovoyi kori 11 Inshoyu situaciyeyu sho vimagaye implantaciyi chuzhoridnoyi tkanini ye vikoristannya zapisuyuchih elektrodiv Hronichni elektrodni implantati ce instrument yakij vikoristovuyetsya v doslidnickih programah dlya zapisu signaliv iz oblastej kori golovnogo mozku Doslidzhennya stimulyaciyi nejroniv PNS u paciyentiv z paralichem i protezuvannyam mozhe rozshiriti znannya pro reinnervaciyu nervovoyi tkanini yak u PNS tak i v CNS Ce doslidzhennya zdatne zrobiti odin skladnij aspekt inzheneriyi nervovoyi tkanini funkcionalnu innervaciyu nervovoyi tkanini bilsh kerovanoyu 12 Centralna nervova sistema CNS RedaguvatiPrichini urazhennya CNS Redaguvati Ye tri osnovni prichini urazhennya CNS insult cherepno mozkova travma ChMT abo uskladnennya rozvitku Insulti klasifikuyutsya yak gemoragichni koli sudina poshkodzhena do stupenya krovovilivu v mozok abo ishemichni koli tromb blokuye krovotik cherez sudinu v mozku Koli vidbuvayetsya krovoviliv krov prosochuyetsya v navkolishni tkanini sho prizvodit do vidmirannya tkanin todi yak ishemichni krovovilivi prizvodyat do vidsutnosti krovotoku do pevnih tkanin Cherepno mozkova travma viklikayetsya zovnishnimi silami sho vplivayut na cherep abo spinnij mozok Problemi z rozvitkom CNS prizvodyat do anomalnogo rostu tkanin pid chas rozvitku takim chinom znizhuyuchi funkciyu CNS 7 Oglyad 2023 roku pidsumuvav osnovni prichini obmezhenoyi regeneraciyi v CNS 1 nespromozhnist utvoriti klitinni abo molekulyarni substrati dlya prikriplennya aksoniv i yih podovzhennya cherez misce urazhennya 2 faktori zovnishnogo seredovisha vklyuchayuchi ingibitori rostu aksoniv pov yazanih z miyelinom i pozaklitinnim matriksom 3 reakciyi astrocitiv yaki mozhut yak obmezhuvati tak i pidtrimuvati rist aksona i 4 vnutrishnonejronni mehanizmi sho kontrolyuyut vstanovlennya aktivnoyi programi klitinnogo rostu 13 nbsp Normalnij rozvitok mozku livoruch mikrocefaliya pravoruch Likuvannya ta doslidzhennya CNS Redaguvati Implantaciya stovburovih klitin na misce poshkodzhennya Redaguvati nbsp Stovburovi koloniyi embriona lyudini A aksonalni vidrostki B nbsp Embrionalni stovburovi klitini mishi mESCs embrioyidni tila EBs Odin iz potencijnih metodiv likuvannya urazhennya CNS vklyuchaye kultivuvannya stovburovih klitin in vitro ta implantaciyu yih u misce urazhennya mozku Implantaciya stovburovih klitin bezposeredno v misce poshkodzhennya zapobigaye utvorennyu glialnih rubciv i spriyaye nejrogenezu sho pohodit vid paciyenta ale takozh stvoryuye deyaki riziki rizik rozvitku puhlini zapalennya ta migraciyi stovburovih klitin z miscya poshkodzhennya Puhlinoutvorennya mozhe viniknuti cherez nekontrolovanij harakter diferenciaciyi stovburovih klitin zapalennya mozhe viniknuti cherez vidtorgnennya implantovanih klitin klitinami gospodaryami a visoka migracijna priroda stovburovih klitin prizvodit do togo sho klitini viddalyayutsya vid miscya poshkodzhennya tomu ne nadaye bazhanij vpliv na misce poshkodzhennya Inshi problemi inzheneriyi nervovoyi tkanini vklyuchayut stvorennya bezpechnih dzherel stovburovih klitin i otrimannya vidtvoryuvanih rezultativ vid likuvannya do likuvannya 7 Krim togo ci stovburovi klitini mozhut diyati yak nosiyi dlya inshih metodiv likuvannya hocha pozitivni efekti vikoristannya stovburovih klitin yak mehanizmu dostavki ne pidtverdzheni Pryama dostavka stovburovih klitin maye pidvishenij korisnij efekt yaksho voni zaprogramovani yak nejronni klitini in vitro 7 Doslidzhennya 2020 roku pokazali sho transplantati nejronnih klitin poperednikiv NPC otrimani zi spinnogo mozku integruyutsya v ushkodzhenij spinnij mozok hazyayina zabezpechuyut nadijnu regeneraciyu kortikospinalnogo aksona ta vidnovlyuyut funkciyu perednih kincivok pislya travmi spinnogo mozku u grizuniv 14 15 Dostavka molekul do miscya poshkodzhennya Redaguvati Molekuli yaki spriyayut regeneraciyi nervovoyi tkanini vklyuchayuchi farmacevtichni preparati faktori rostu vidomi yak morfogeni i mikroRNK takozh mozhut buti bezposeredno vvedeni v misce poshkodzhennya poshkodzhenoyi tkanini CNS Nejrogenez sposterigavsya takozh u tvarin yakih likuvali psihotropnimi preparatami cherez prignichennya zvorotnogo zahoplennya serotoninu ta indukciyu nejrogenezu v mozku Koli stovburovi klitini diferenciyuyutsya klitini vidilyayut morfogeni taki yak faktori rostu shob spriyati zdorovomu rozvitku Ci morfogeni dopomagayut pidtrimuvati gomeostaz i nejronni signalni shlyahi i voni mozhut buti dostavleni v misce poshkodzhennya dlya spriyannya rostu poshkodzhenih tkanin V danij chas dostavka morfogenu maye minimalni perevagi cherez vzayemodiyu morfogeniv z ushkodzhenoyu tkaninoyu Shob likuvannya bulo efektivnim morfogeni povinni buti prisutnimi v misci poshkodzhennya v pevnij i postijnij koncentraciyi Bulo takozh pokazano sho mikroRNK vplivaye na nejrogenez keruyuchi diferenciyuvannyam nediferencijovanih nejronnih klitin 7 Cilespryamovana reinnervaciya Redaguvati Cilespryamovana reinnervaciya Targeted reinnervation ce metod reinnervaciyi nejronnih zv yazkiv u CNS ta PNS zokrema u paralizovanih paciyentiv ta osib z amputovanimi kincivkami yaki vikoristovuyut protezi kincivok Zaraz doslidzhuyutsya pristroyi yaki sprijmayut i zapisuyut elektrichni signali sho poshiryuyutsya cherez nejroni u vidpovid na namir lyudini ruhatisya Ce doslidzhennya mozhe proliti svitlo na te yak reinnervuvati nejronni zv yazki mizh rozirvanimi nervami PNS i zv yazki mizh peresadzhenimi 3D karkasami v CNS 12 Implantaciya nervovoyi tkanini rozroblenoyi in vitro Redaguvati Tretij metod likuvannya poshkodzhen CNS polyagaye u shtuchnomu stvorenni tkanini poza tilom dlya implantaciyi v misce poshkodzhennya Cej metod mozhe likuvati travmi yaki skladayutsya z velikih porozhnin de bilsha kilkist nervovoyi tkanini potrebuye zamini ta regeneraciyi Nervova tkanina viroshuyetsya in vitro z nejronnimi stovburovimi klitinami abo klitinami poperednikami v 3D karkasi utvoryuyuchi embrioyidni tila Ci embrioyidni tila skladayutsya zi sferi stovburovih klitin de vnutrishni klitini ye nediferencijovanimi nervovimi klitinami a navkolishni klitini stayut vse bilsh diferencijovanimi Trivimirni karkasi vikoristovuyutsya dlya transplantaciyi tkanini do miscya poshkodzhennya ta stvorennya vidpovidnogo interfejsu mizh shtuchnoyu ta tkaninoyu mozku Karkasi mayut buti biosumisnimi biorozkladnimi vidpovidati za rozmirom ta formoyu miscyu poshkodzhennya podibnimi do isnuyuchoyi tkanini za elastichnistyu ta zhorstkistyu ta pidtrimuvati zrostannya klitin i tkanin Poyednannya vikoristannya spryamovanih stovburovih klitin i karkasiv dlya pidtrimki nervovih klitin i tkanin zbilshuye vizhivannya stovburovih klitin u misci poshkodzhennya pidvishuyuchi efektivnist likuvannya 7 nbsp Peptidni biorozkladni karkasi dlya inzheneriyi nervovoyi tkanini Isnuye 6 riznih tipiv karkasiv yaki doslidzhuyutsya dlya vikoristannya v comu metodi likuvannya ushkodzhen nervovoyi tkanini Ridki gidrogeli ce zshiti gidrofobni polimerni lancyugi v yakih nejronni stovburovi klitini viroshuyutsya na poverhni gelyu abo integruyutsya v gel pid chas zshivannya polimernih lancyugiv Osnovnim nedolikom ridkih gidrogeliv ye obmezhenij zahist klitin yaki transplantuyutsya Pidtrimuyuchi karkasi Supportive scaffolds vigotovleni z tverdih kulkopodibnih abo mikroporistih struktur i mozhut diyati yak nosiyi dlya transplantovanih klitin abo faktoriv rostu yaki stovburovi klitini vidilyayut pid chas diferenciyuvannya Klitini prilipayut do poverhni matrici dvovimirnimi sharami Pidtrimuyuchi karkasi legko transplantuyutsya v misce poshkodzhennya golovnogo mozku cherez rozmiri skaffoldiv Voni zabezpechuyut matricyu sho spriyaye klitinnij adgeziyi ta agregaciyi takim chinom zbilshuyuchi kulturu zdorovih klitin Karkasi dlya virivnyuvannya Aligning scaffolds mozhut buti na osnovi shovku polisaharidiv abo na osnovi inshih materialiv takih yak bagatij kolagenom gidrogel Ci geli teper pokrasheni mikrovizerunkami na poverhni dlya spriyannya rozvitku nejronnih vidrostkiv Ci karkasi v osnovnomu vikoristovuyutsya dlya regeneraciyi yaka maye vidbuvatisya v pevnij oriyentaciyi napriklad pri travmah spinnogo mozku Integrativni karkasi v osnovnomu vikoristovuyutsya dlya zahistu transplantovanih klitin vid mehanichnih poshkodzhen yakim voni piddayutsya v procesi implantaciyi v misce poshkodzhennya Ci karkasi takozh zmenshuyut jmovirnist togo sho zapalni klitini roztashovani v misci poshkodzhennya migruyut u karkas zi stovburovimi klitinami Pomicheno sho krovonosni sudini prorostayut cherez karkas takim chinom karkas i klitini integruyutsya v tkaninu gospodarya Kombinaciya skonstrujovanih karkasiv predstavlyaye variant 3D karkasu yakij mozhe mati yak neobhidni vizerunki dlya adgeziyi klitin tak i gnuchkist dlya adaptaciyi do postijno minlivogo seredovisha v misci poshkodzhennya Decelyulyarizovani karkasi ECM ye variantom dlya karkasiv oskilki voni bilsh tochno imituyut nativnu tkaninu ale narazi ci karkasi mozhna zibrati lishe z amputacij i trupiv 7 Ci trivimirni karkasi mozhut buti vigotovleni za dopomogoyu metodiv vilugovuvannya chastinok gazovogo spinyuvannya z yednannya volokon littya z rozchinnika abo elektroformuvannya kozhna tehnika stvoryuye karkas iz vlastivostyami vidminnimi vid inshih tehnik 16 Bulo pokazano sho uspih vklyuchennya 3D karkasiv u CNS zalezhit vid stadiyi na yakij klitini diferenciyuvalisya Piznishi stadiyi zabezpechuyut bilsh efektivnu implantaciyu todi yak klitini na bilsh rannih stadiyah povinni buti piddani vplivu faktoriv yaki zmushuyut klitini diferenciyuvatis i takim chinom nalezhnim chinom reaguvati na signali yaki klitini otrimuvatimut u misci poshkodzhennya CNS 17 Nejrotrofichnij faktor otrimanij z mozku ye potencijnim kofaktorom dlya spriyannya funkcionalnij aktivaciyi nejroniv otrimanih z klitin ES u miscyah poshkodzhennya CNS 18 Poligidroksialkanoati ye prirodnimi biorozkladanimi termoplastichnimi ta stijkimi biopolimerami z velichekim potencialom u vigotovlenni biorozsmoktuvanih karkasiv dlya tkaninnoyi inzheneriyi zokerma dlya inzheneriyi nervovoyi tkanini 19 Periferichna nervova sistema PNS RedaguvatiPrichini urazhennya PNS Redaguvati Travma PNS mozhe sprichiniti take serjozne poshkodzhennya yak rozriv nerva rozsheplennya nerva na proksimalnu ta distalnu chastini Distalnij nerv z chasom degeneruye cherez bezdiyalnist todi yak proksimalnij kinec z chasom nabryakaye Distalnij kinec ne degeneruye vidrazu a nabryak proksimalnogo kincya ne robit jogo nefunkcionalnim tomu doslidzhuyutsya metodi vidnovlennya zv yazku mizh dvoma kincyami nerva 5 Likuvannya ta doslidzhennya PNS Redaguvati Hirurgichne z yednannya Redaguvati Odnim iz metodiv likuvannya poshkodzhennya PNS ye hirurgichne vidnovlennya vidirvanogo nerva shlyahom vzyattya dvoh kinciv nerva ta yih zshivannya Pid chas zshivannya nerviv kozhen puchok nerva znovu z yednuyetsya z yednuyuchi nerv razom Hocha cej metod pracyuye dlya rozriviv yaki stvoryuyut nevelikij promizhok mizh proksimalnim i distalnim zakinchennyami nerviv cej metod ne pracyuye na promizhkah bilshoyi vidstani cherez naprugu yaku neobhidno zastosuvati do nervovih zakinchen Cya napruga prizvodit do degeneraciyi nerva i tomu nerv ne mozhe vidnovitisya ta sformuvati funkcionalnij nejronnij zv yazok 5 Peresadki tkanin Redaguvati Tkaninni transplantati vikoristovuyut nervi abo inshi materiali dlya z yednannya dvoh kinciv vidirvanogo nerva Isnuye tri kategoriyi tkaninnih transplantativ transplantati autologichnoyi tkanini transplantati neavtologichnoyi tkanini ta acelyulyarni transplantati Transplantati autologichnoyi tkanini peresadzhuyut nervi z inshoyi chastini tila paciyenta shob zapovniti promizhok mizh oboma kincyami poshkodzhenogo nerva Ci nervi yak pravilo ye shkirnimi nervami ale j inshi nervi buli doslidzheni z obnadijlivimi rezultatami Ci autologichni nervovi transplantati ye potochnim zolotim standartom dlya transplantaciyi nerviv PNS cherez visoku biosumisnist autologichnih transplantativ nerviv ale isnuyut problemi shodo viluchennya nerva u samih paciyentiv i mozhlivosti zberigati veliku kilkist autologichnih transplantativ na majbutnye vikoristovuvannya Neavtologichni ta acelyulyarni transplantati vklyuchayuchi materiali na osnovi pozaklitinnogo matriksu ce tkanini yaki ne pohodyat vid paciyenta a mozhut buti zibrani z trupiv vidomi yak alogenni tkanini abo tvarin vidomi yak ksenogenni tkanini Hocha ci tkanini mayut perevagu pered autologichnimi tkaninnimi transplantatami oskilki tkaninu ne potribno brati u paciyenta vinikayut trudnoshi z potencijnoyu peredacheyu zahvoryuvannya ta otzhe imunogennimi problemami Narazi doslidzhuyutsya metodi usunennya imunogennih klitin zalishayuchi pozaklitinno matrichni komponenti tkanini shob pidvishiti efektivnist transplantativ neautologichnoyi tkanini 5 Navedennya Redaguvati source source source source source Regeneraciya z navedennyam u periferichnih aksonah ribki danioMetodi keruvannya regeneraciyeyu PNS vikoristovuyut nervovi napravlyayuchi kanali shob dopomogti aksonam vidnoviti pravilnij shlyah i mozhut spryamovuvati faktori rostu sho vidilyayutsya oboma kincyami nerva dlya spriyannya rostu ta povtornomu z yednannyu Metodi navedennya zmenshuyut utvorennya rubciv na nervah zbilshuyuchi funkcionalnist nerviv dlya peredachi potencialiv diyi pislya povtornogo pidklyuchennya U kerivnih metodah regeneraciyi PNS vikoristovuyutsya dva vidi materialiv naturalni ta sintetichni 20 Materiali na naturalnij osnovi ce modifikovani karkasi sho pohodyat vid komponentiv pozaklitinnogo matriksu i glikozaminoglikaniv Laminin kolagen i fibronektin yaki ye komponentami pozaklitinnogo matriksu napravlyayut rozvitok aksoniv i spriyayut nervovij stimulyaciyi ta aktivnosti Inshi molekuli yaki mozhut spriyati vidnovlennyu nerviv ce gialuronova kislota fibrinogen fibrinovi geli samozbirni peptidni karkasi alginat agaroza ta hitozan Sintetichni materiali zabezpechuyut metod regeneraciyi tkanin za dopomogoyu yakogo mozhna kontrolyuvati himichni ta fizichni vlastivosti transplantata Oskilki vlastivosti materialu mozhut buti viznacheni dlya situaciyi v yakij vin vikoristovuyetsya sintetichni materiali ye privablivim variantom dlya regeneraciyi PNS Vikoristannya sintetichnih materialiv pov yazane z pevnimi problemami takimi yak formuvannya materialu transplantata do neobhidnih rozmiriv zdatnist do biologichnogo rozkladannya sterilizaciya stijkist do rozriviv legkist u roboti nizkij rizik infikuvannya ta nizka reakciya na zapalennya zavdyaki materialu Material takozh povinen pidtrimuvati kanal pid chas regeneraciyi nerva V danij chas najbilsh chasto doslidzhuvani materiali zoseredzheni na poliefirah ale takozh doslidzhuyutsya biorozkladanij poliuretan inshi polimeri ta biorozkladne sklo Inshimi mozhlivostyami dlya sintetichnih materialiv ye elektroprovidni polimeri ta polimeri biologichno modifikovani dlya spriyannya rostu aksoniv klitin i pidtrimki aksonnogo kanalu 5 Cilespryamovana reinnervaciya Redaguvati Cilespryamovana reinnervaciya Targeted reinnervation ce metod reinnervaciyi nejronnih zv yazkiv u CNS ta PNS zokrema u paralizovanih paciyentiv ta osib z amputovanimi kincivkami yaki vikoristovuyut protezi kincivok Zaraz doslidzhuyutsya pristroyi yaki sprijmayut i zapisuyut elektrichni signali sho poshiryuyutsya cherez nejroni u vidpovid na namir lyudini ruhatisya Ce doslidzhennya mozhe proliti svitlo na te yak reinnervuvati nejronni zv yazki mizh rozirvanimi nervami PNS i zv yazki mizh peresadzhenimi 3D karkasami v CNS 12 Pov yazani doslidzhennya RedaguvatiModelyuvannya rozvitku tkanin mozku in vitro Redaguvati nbsp Blok shema cerebralnih organoyidivDvoma modelyami rozvitku tkanin mozku ye cerebralni organoyidi ta kortikopoez Ci modeli zabezpechuyut in vitro model normalnogo rozvitku mozku 10 ale nimi mozhna manipulyuvati shob dosliditi nejronni defekti Takim chinom doslidniki mozhut vivchati mehanizmi zdorovogo ta nepravilnogo rozvitku za dopomogoyu cih modelej 10 Ci tkanini mozhna vigotoviti abo z mishachih embrionalnih stovburovih klitin ESK abo z lyudskih Mishachi ESK kultivuyut u bilku yakij nazivayetsya ingibitor Sonic Hedgehog shob spriyati rozvitku dorsalnogo perednogo mozku ta vivchati dolyu kori 9 Pokazano sho cej metod stvoryuye aksonalni shari yaki imituyut shirokij spektr kortikalnih shariv 10 Tkanini otrimani z ESK lyudini vikoristovuyut plyuripotentni stovburovi klitini dlya formuvannya tkanin na karkasi utvoryuyuchi lyudski embrioyidni tila Ci tkanini otrimani z ESK lyudini utvoryuyutsya shlyahom kultivuvannya plyuripotentnih embrioyidnih til lyudini v obertovomu bioreaktori 10 Cerebralni organoyidi Redaguvati Cerebralni organoyidi takozh vidomi yak organoyidi mozku ye trivimirnimi 3D strukturami stvorenimi z plyuripotentnih stovburovih klitin lyudini 21 Taki organoyidi nagaduyut lyudskij mozok sho rozvivayetsya z tochki zoru tipiv klitin organizaciyi ta funkcionalnosti Cerebralni organoyidi zdatni povtoryuvati rizni aspekti rozvitku lyudskogo mozku vklyuchayuchi proliferaciyu nervovih klitin poperednikiv diferenciaciyu nejroniv formuvannya okremih dilyanok mozku i navit formuvannya sinapsiv Ci organoyidi zazvichaj utvoryuyutsya shlyahom kultivuvannya plyuripotentnih stovburovih klitin lyudini v 3D matrici yaka spriyaye utvorennyu nervovih klitin poperednikiv yaki diferenciyuyutsya ta samoorganizuyutsya v rizni tipi klitin mozku Cerebralni organoyidi shiroko vikoristovuyutsya v doslidzhennyah nejrorozvitku 22 dlya vivchennya klitinnih i molekulyarnih mehanizmiv rozvitku lyudskogo mozku 23 24 ta modelyuvannya riznih nevrologichnih rozladiv 21 25 Doslidzhennya 2023 roku opublikovane v Nature Protocols pokazalo mozhlivist stvorennya fotochutlivih organoyidiv perednogo mozku sho utvorili primitivni epitelialni ta linzopodibni klitini rogivki pigmentnij epitelij sitkivki klitini poperedniki sitkivki aksonopodibni proekciyi ta elektrichno aktivni nejronni merezhi 26 Vikoristannya cerebralnih organoyidiv u doslidzhennyah maye potencial dlya znachnogo vdoskonalennya nashogo rozuminnya lyudskogo mozku ta nadannya novih uyavlen pro rozvitok i likuvannya nevrologichnih rozladiv nbsp Doslidzhennya organoyidnogo intelektu 27 Organoyidnij intelekt Redaguvati Organoyidnij intelekt OI ce nova mizhdisciplinarna galuz zoseredzhena na rozrobci biologichnih obchislen iz vikoristannyam 3D kultur klitin lyudskogo mozku organoyidiv mozku i tehnologij interfejsu mozok mashina Biobchislyuvalni sistemi na osnovi OI mayut potencial dlya shvidshogo prijnyattya rishen bezperervnogo navchannya pid chas vikonannya zavdan i bilshoyi efektivnosti vikoristannya energiyi ta danih nizh obchislennya na osnovi kremniyu ta shtuchnogo intelektu Rozvitok OI mozhe pokrashiti nashe rozuminnya rozvitku mozku navchannya pam yati ta potencijno dopomozhe znajti likuvannya nevrologichnih rozladiv takih yak demenciya OI vklyuchaye zbilshennya organoyidiv mozku v skladni micni 3D strukturi zbagacheni klitinami ta genami pov yazanimi z navchannyam pidklyuchennya yih do pristroyiv vvedennya ta vivedennya nastupnogo pokolinnya ta sistem ShI mashinnogo navchannya Dlya cogo potribni novi modeli algoritmi ta tehnologiyi interfejsu shob spilkuvatisya z organoyidami mozku rozumiti yak voni navchayutsya ta obchislyuyut a takozh obroblyati ta zberigati velichezni obsyagi danih yaki voni generuyut 27 28 Doslidzhennya in vivo Redaguvati nbsp Cerebralni organoyidi lyudini z klitin lyudskogo mozku pid chas rozvitku Transplantaciya kortikalnih stovburovih klitin pokazala bagatoobicyayuchij potencial dlya vidnovlennya mozku 29 Odnak efektivnist suchasnih modelej transplantaciyi v koduvanni korisnoyi funkciyi dlya hazyayina cherez otrimani vid transplantaciyi nejroni vse she obmezhena Ce poyasnyuyetsya vidsutnistyu deyakih tipiv klitin u transplantatah anomalnimi proporciyami tipiv klitin anomalnoyu citoarhitekturoyu ta neefektivnoyu vaskulyarizaciyeyu 30 29 Shob usunuti ci obmezhennya bula rozroblena platforma transplantaciyi dlya testuvannya prototipiv neokortikalnoyi tkanini 31 Platforma vklyuchala transplantaciyu disocijovanih mishachih embrionalnih telencefalnih klitin u ridkomu karkasi v urazhenu aspiraciyeyu koru kori dorosloyi mishi Poperedniki donorskih nejroniv diferenciyuvalisya na nejroni verhnogo ta glibokogo shariv yaki demonstruvali sinaptichni tochki proektuvalisya za mezhi transplantata u vidpovidni dilyanki mozku stavali elektrofiziologichno aktivnimi protyagom odnogo misyacya pislya transplantaciyi ta reaguvali na vizualni stimuli Internejroni ta oligodendrociti buli prisutni v transplantatah z normalnoyu shilnistyu Transplantati povnistyu vaskulyarizuvalisya cherez tizhden pislya transplantaciyi Klitini takozh buli organizovani v shari Cya platforma in vivo proponuye pidtverdzhennya koncepciyi rozrobki ta testuvannya prototipiv tkanin shozhih na neokorku yaki mozhut mati naslidki dlya vidnovlennya mozku ta regenerativnoyi medicini Transplantaciya organoyidiv Redaguvati nbsp Transplantaciya korkovih organoyidiv lyudini v koru golovnogo mozku shuriv sho rozvivayetsya 29 Doslidzhennya 2023 roku pokazalo sho organoyidi lyudskogo mozku uspishno integruyutsya iz zorovoyu sistemoyu doroslogo shura pislya transplantaciyi u veliki poshkodzheni porozhnini zorovoyi kori 32 Transsinaptichne vidstezhennya na osnovi virusiv viyavilo polisinaptichnij shlyah mizh transplantovanimi lyudskimi organoyidnimi nejronami ta sitkivkoyu shura gospodarya ta vzayemnij zv yazok mizh transplantatom ta inshimi regionami zorovoyi sistemi Vizualna stimulyaciya tvarin gospodariv viklikaye vidpovidi v organoyidnih nejronah vklyuchayuchi vibirkovist oriyentaciyi Ci rezultati demonstruyut zdatnist organoyidiv lyudskogo mozku prijmati skladni funkciyi pislya vvedennya u veliki porozhnini travmi proponuyuchi translyacijnu strategiyu dlya vidnovlennya funkciyi pislya poshkodzhennya kori 32 33 She odne doslidzhennya na mishah opublikovane v travni 2023 roku v npj Regenerative Medicine sho doslidzhuvalo vikoristannya mozkovih organoyidiv dlya vidnovlennya funkcionalnoyi nervovoyi tkanini v misci urazhennya pislya ishemichnogo insultu pokazalo 34 Cherez kilka misyaciv mi viyavili sho transplantovani organoyidi dobre vizhili v urazhenomu infarktom yadri diferenciyuvalisya v cilovi nejroni vidnovlyuvali infarktnu tkaninu posilali aksoni do viddalenih mishenej mozku ta integruvalisya v nejronnij 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