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Transfekciya proces vvedennya nukleyinovih kislot v eukariotichni klitini Ce mozhe takozh stosuvatisya shozhih metodiv dlya inshih tipiv klitin transformaciya zazvichaj vikoristovuyetsya dlya opisu nevirusnoyi peredachi DNK bakterij ta ne tvarinnih eukariotichnih klitin v tomu chisli klitini roslin Transdukciya chasto vikoristovuyetsya dlya opisu oposeredkovanogo virusom perenosu genu v eukariotichni klitini Transfekciya tvarinnih klitin yak pravilo peredbachaye vnesennya zmin do strukturi klitinnoyi membrani shob zabezpechiti mozhlivist otrimannya genetichnogo materialu Transfekciyu mozhna zdijsnyuvati za dopomogoyu fosfatu kalciyu abo trikalcijfosfatu elektroporaciyeyu vikoristannyam kationnogo lipidu dlya otrimannya liposom yaki zlivayutsya z klitinnoyu membranoyu klitin mishenej ta perenosyat svij vantazh genetichnij material vseredinu Transfekciya mozhe prizvesti do nespodivanih morfologichnih zmin ta vidhilen u klitin mishenej TerminologiyaZnachennya terminu evolyucionuvalo Pervisne znachennya transfekciyi polyagalo v zarazhenni shlyahom transformaciyi tobto vvedennya genetichnogo materialu DNK abo RNK iz virusu sho zarazhaye prokariot abo bakteriofaga v klitini vnaslidok chogo vidbuvayetsya infekciya Oskilki termin transformaciya mav inshij sens u biologiyi tvarinnih klitin genetichna zmina sho dozvolyaye dovgostrokove rozpovsyudzhennya v kulturi abo pridbannya vlastivostej harakternih dlya rakovih klitin termin transfekciya vvedenij dlya tvarinnih kiltin oznachaye zmini klitinih vlastivosti viklikani vvedennyam DNK MetodiIsnuyut rizni metodi vvedennya chuzhoridnoyi DNK v eukariotichnu klitinu v osnovu deyakih pokladenij fizichnij vpliv na membranu klitini misheni elektroporaciya vidavlyuvannya klitin nanochastinki magnitofekciya v osnovi inshih lezhit vzayemodiya z himichnimi spolukami chi virusami yaki vikoristovuyutsya yak nosiyi genetichnoyi informaciyi Napriklad dostavka geniv ye odnim iz etapiv neobhidnih dlya gennoyi terapiyi ta genetichnoyi modifikaciyi kultur Isnuye bagato riznih metodiv dostavki geniv dlya riznih tipiv klitin i tkanin vid bakterialnih do ssavciv Zazvichaj metodi mozhna rozdiliti na dvi kategoriyi nevirusni ta virusni Nevirusni metodi vklyuchayut riznomanitni sposobi fizichnogo vplivu na klitunu mishen taki yak elektroporaciya mikroin yekciya genna garmata defektologiya gidrostatichnij tisk bezperervna infuziya a takozh vikoristannya ultrazvuku ta himichnih spoluk takih yak lipofekciya sho ye lipidno oposeredkovanim procesom transfekciyi DNK z vikoristannyam liposomnih vektoriv Voni takozh mozhut vklyuchati vikoristannya polimernih genonosiyiv polipleksiv Virus oposeredkovana dostavka geniv vikoristovuye zdatnist virusu vvoditi svoyu DNK vseredinu klitini misheni Gen priznachenij dlya dostavki upakovuyetsya u virusnu chastinku z obmezhenoyu replikaciyeyu Virusi yaki vikoristovuyutsya na sogodnishni retrovirus lentivirus adenovirus adeno asocijovanij virus ta virus prostogo gerpesu Odnak isnuyut pevni nedoliki vikoristannya virusiv dlya dostavki geniv u klitini Virusi mozhut dostavlyati v klitini lishe duzhe malenki shmatochki DNK ce trudomistko i ye riziki netargetnogo vvedennya citopatichnogo vplivu ta mutagenezu Nevirusni metodi Transfekciya z vikoristannyam himichnih spoluk Transfekciyu na osnovi himichnih rechovin mozhna rozdiliti na kilka vidiv ciklodekstrin polimeri liposomi abo nanochastinki z himichnoyu abo virusnoyu funkcionalizaciyeyu abo bez neyi Divitsya nizhche Odnim z najdeshevshih metodiv ye vikoristannya fosfatu kalciyu vpershe opisanogo F L Gremom ta A Dzh Van der Ebom u 1973 r div Takozh Solovij rozchin z vikoristannyam bufernogo agentu HEPES HeBS sho mistit ioni fosfatu poyednuyut z rozchinom hloridu kalciyu sho mistit DNK yaka pidlyagaye transfekciyi Pislya yih poyednannya utvoryuyetsya dribnij osad pozitivno zaryadzhenogo kalciyu ta negativno zaryadzhenogo fosfatu zv yazuyuchi DNK yaka bude lokalizovana na jogo poverhni Potim suspenziyu osadu dodayut do klitin yaki pidlyagayut transfekciyi zazvichaj ce kultura klitin viroshena v monoshari Osad potraplyaye do klitin mishenej razom z nim dostavlyayetsya i DNK Na sogodni konkretni mehanizmi potraplyannya osadu ta DNK do klitin mishenej ne ye do kincya zrozumilimi Zavdyaki vikoristannyu danogo metodu bulo zdijsnena identifikaciya bagatoh onkogeniv Inshi metodi vikoristovuyut visokorozgaluzheni organichni spoluki tak zvani dendrimeri shob zv yazati DNK i dostaviti yiyi v klitinu mishen Inshim metodom ye vikoristannya kationnih polimeriv takih yak DEAE dekstran abo polietilenimin PEI Negativno zaryadzhena DNK zv yazuyetsya z polielektrolitom a yih kompleks zahoplyuyetsya klitinoyu za dopomogoyu endocitozu Lipofekciya abo liposomna transfekciya ce tehnika sho zastosovuyetsya dlya vvedennya genetichnogo materialu v klitinu za dopomogoyu liposom yaki ye vezikulami sho legko zlivayutsya z klitinnoyu membranoyu oskilki voni pobudovani z lipidnogo bisharu Lipofekciya zazvichaj vikoristovuye pozitivno zaryadzhenij kationnij lipid kationni liposomi abo sumishi dlya formuvannya agregatu z negativno zaryadzhenim anionnim genetichnim materialom Cya tehnologiya transfekciyi realizuye ti zh cili sho j inshi biohimichni pidhodi z vikoristannyam polimeriv DEAE dekstranu fosfatu kalciyu ta elektroporaciyi Efektivnist lipofekciyi mozhna pidvishiti dlya cogo vikoristovuyut teplovij shok Fugene ce seriya shiroko vikoristovuvanih firmovih neliposomnih reagentiv dlya transfekciyi zdatnih bezposeredno zaraziti shirokij spektr klitin z visokoyu efektivnistyu ta nizkoyu toksichnistyu Nehimichni metodi Elektroporator z kvadratnimi hvilyami ta eksponentnimi formami rozpadu dlya in vitro ta in vivo kultur klitin ta 96 lunkovih zastosuvan dlya elektroporaciyi Virobnik BTX Garvardskij aparat Holliston MA SShA Elektroporaciya gennij elektrotransfer populyarnij metod de timchasove pidvishennya proniknosti klitinnoyi membrani dosyagayetsya zavdyaki vplivu na klitinu korotkimi imulsami elektrichnogo polya Cell squeezing ce metod opisanij u 2012 roci Armonom Shareyem Robertom Langer ta Klavsom Dzhensenom u MIT Ce dozvolyaye dostavlyati molekuli v klitini cherez deformaciyu klitinnoyi membrani Predstavlyaye soboyu mikroflyuyidnu platformu z visokoyu propusknoyu zdatnistyu dlya vnutrishnoklitinnoyi dostavki Ce znizhuye jmovirnist toksichnosti abo necilovogo vplivu oskilki ne pokladayetsya na ekzogenni materiali chi elektrichni polya Sonoporaciya vikoristovuye ultrazvuk visokoyi intensivnosti dlya utvorennya por v membranah klitin Yavishe utvorennya por poyasnyuyetsya golovnim chinom kavitaciyeyu gazovih bulbashok sho vzayemodiyut iz susidnimi klitinnimi membranami Optichna transfekciya metod yakij vikoristovuye krihitnij 1 mikrometr za diametrom otvir v membrani klitini misheni yakij utvoryuyetsya zavdyaki vplivu na membranu sfokusovanim lazernim promenem Cyu metodiku vpershe opisali u 1984 roci Tsukakoshi ta in U cij tehnici obroblyayetsya odna klitina za raz sho robit yiyi osoblivo korisnoyu dlya analizu odinochnih klitin Zlittya protoplastiv ce tehnika u yakij transformovani bakterialni klitini obroblyayutsya lizocimom z metoyu vidalennya klitinnoyi stinki Pislya cogo fuzogenni agenti napriklad virus Sendaya PEG elektroporaciya vikoristovuyutsya dlya zlittya protoplasta sho nese gen interesu z cilovoyu klitinoyu mishennyu Osnovnim nedolikom cogo metodu ye te sho bakterialni komponenti takozh mozhut nespecifichno potraplyati do klitini misheni ce metod vvedennya DNK zv yazanoyi z poverhneyu nanovolokon yaki perenosyatsya v klitinu mishen Cej pidhid takozh mozhe buti realizovanij z masivami nanovolokon yaki vvodyatsya u veliku kilkist klitin Gidrodinamichna dostavka ce metod yakij zastosovuyut v bilshosti vipadkiv dlya mishej ta shuriv ale menshoyu miroyu dlya velikih tvarin pri yakomu DNK najchastishe u plazmidah vklyuchayuchi transpozoni mozhe buti dostavlena do pechinki za dopomogoyu gidrodinamichnoyi in yekciyi yaka peredbachaye shvidke vlivannya porivnyano velikogo ob yemu v krov yane ruslo majzhe vsya DNK vvedena z vikoristannyam takogo pidhodu ekspresuyetsya v pechinci Metodi na osnovi chastinok She odnim pidhodom do transfekciyi ye genna garmata de DNK priyednuyetsya do nanochastinki inertnoyi tverdoyi rechovini zazvichaj zolota yake potim vistrilyuyetsya bezposeredno v yadro klitini misheni abo ce metod transfekciyi yakij vikoristovuye magnitnu silu dlya dostavki DNK u klitini misheni Nukleyinovi kisloti spochatku asociyuyutsya z magnitnimi nanochastinkami Dali z vikoristannya magnitnogo polya chastochki dostavlyayetsya do klitin mishenej Inshij metod transfekciyi na osnovi chastinok vidomij yak obstril chastinkami Nukleyinova kislota dostavlyayetsya zavdyaki proniknennya membrani z velikoyu shvidkistyu yak pravilo z yednana z mikronosiyami Inshi ta gibridni metodi Inshi sposobi transfekciyi vklyuchayut efektivnist yakoyi bulo pokazano pri transfekciyi stvorivshi zhittyezdatnu klitinnu liniyu yaku vdalosya diferenciyuvati na zrili makrofagi ta teplovij shok Virusni metodi DNK takozh mozhe buti dostavleno do klitin mishenej z vikoristannyamvirusiv yak nosiyi U takih vipadkah metodiku nazivayut virusnoyu transdukciyeyu i klitini nazivayut transdukovanimi Adenovirusni vektori mozhut buti korisnimi dlya virusnih metodiv transfekciyi oskilki voni mozhut perenositi geni v najriznomanitnishi klitini lyudini i mayut visoku shvidkist peredachi Stabilna i perehidna transfekciyaStabilna i perehidna transfekciya vidriznyayetsya svoyeyu trivalistyu efektu na klitinu mishen stabilno transfikovana klitina bude postijno ekspresuvati transfikovanu DNK i peredavati yiyi dochirnim klitinam todi yak perehidno transfikovana klitina protyagom korotkogo chasu ekspresuvatime transfikovanu DNK i ne peredavatime yiyi dochirnim klitinam Dlya deyakih zastosuvan transfekciyi dostatno yaksho transfikovanij genetichnij material ekspresuyetsya lishe timchasovo Oskilki DNK sho vvoditsya v procesi transfekciyi zazvichaj ne integruyetsya v 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