Methylene blue ikasokoneza mayeso amene amagwiritsidwa ntchito kuiyeza

Laboratory ina imakulitsa miluza ya zebrafish m'methylene blue pa mulingo wokhazikika wosamalira nsombazo, kenako imayeza kagayidwe ka zinthu m'njira ziwiri. Pa tsiku loyamba, chipangizo cha Seahorse chimasonyeza kuti kugwiritsa ntchito oxygen kukukwera. Pa masiku anayi ndi asanu, mbale yoyezera ya Alamar Blue imasonyeza kuti kugwiritsa ntchito mphamvu kukutsika. Utoto womwewo, mzere woberekera wa nsomba womwewo, koma zotsatira zotsutsana. Kenako pamabwera chitsanzo choyerekeza chosaoneka chapadera: timabowo ta mbale tokhala ndi methylene blue pamodzi ndi chinthu choyezera cha Alamar Blue, koma topanda nsomba iliyonse, timasonyezanso kuwala kochepa kuposa chinthu choyezera chokha. Mbali ina ya zotsatirazo inachokera ku zamoyo. Mbali ina inali ngati utotowo ukuweruza mayeso ake omwe. Kusiyana kumeneku, kolembedwa mu kafukufuku wa 2025 wa Communications Biology wokhudza methylene blue mu zebrafish zomwe zikukula, ndi mmene methylene blue imasokonezera mayeso nthawi zambiri. N'chifukwa chake utoto umene umachita nawo kusinthana kwa maelekitironi umafunika zitsanzo zoyerekeza zimene zinthu zina zoyesedwa sizimafuna.

Zimene mayeso a resazurin amasonyezadi

Alamar Blue ndi dzina la mtundu wa yankho la resazurin, choncho kusokoneza mayeso a Alamar Blue ndi kusokoneza mayeso a resazurin kochitika chifukwa cha methylene blue kumatanthauza vuto lomwelo. Resazurin yomwe yataya maelekitironi imakhala yabuluu ndipo imatulutsa kuwala kwa fluorescence kochepa kwambiri. Maselo amene akuchita kagayidwe ka zinthu amaipatsa maelekitironi n'kuisintha kukhala resorufin, yomwe ndi yapinki ndipo imatulutsa fluorescence yamphamvu pafupi ndi kutalika kwa mafunde a kuwala koyambitsa kwa 560 nm ndi kuwala kotuluka kwa 590 nm. Magawo ogwiritsidwa ntchito amakhala pafupifupi 530 mpaka 570 nm pa kuwala koyambitsa ndi 580 mpaka 610 nm pa kuwala kotuluka, malinga ndi malangizo a wopanga ogwiritsira ntchito mbale ya timabowo ting'onoting'ono. Kulandira maelekitironi kukapitirira, resorufin imasanduka dihydroresorufin, yomwe imatulutsa fluorescence yofooka. Choncho kuika maselo ochuluka kwambiri m'kabowo kapena kupereka nthawi yaitali kwambiri kumapinditsa mzere wolinganizira miyeso kutsika kumapeto kwa miyeso yapamwamba.

Maelekitironi ambiri amachokera ku NADH ndi NADPH kudzera mwa ma enzyme a maselo otchedwa reductases ndi diaphorases omwe ali mu cytosol, microsomes, ndi mitochondria. Zimenezi zikutanthauza kuti zotsatirazo zimasonyeza mphamvu yonse yopereka maelekitironi, osati kuchuluka kwa maselo amoyo kapena muyeso wa mitochondria. Chizindikiro champhamvu kwambiri chingatanthauze maselo ochuluka, kuyenda kochuluka kwa maelekitironi operekedwa pa selo lililonse, kapena zonsezi. Chinthu chimene chimasintha njira ya NADH chimasintha chizindikirocho popanda kupha ngakhale selo limodzi. Kumbukirani mawu amenewa, chifukwa kusintha njira ya NADH ndi chimodzi mwa zochita za methylene blue.

Njira ziwiri zosokonezera, chizindikiro chimodzi chotsika

Methylene blue imasokoneza zotsatira za resazurin kudzera m'njira ziwiri zodziimira pawokha, ndipo iliyonse payokha imachepetsa fluorescence yomwe imaoneka.

Njira 1 ndi yokhudza kuwala. Methylene blue imayamwa kwambiri kuwala kofiira. Gawo lake la monomer limakhala pafupi ndi 660 mpaka 665 nm, ndipo gawo lowonjezera la dimer limakhala pafupi ndi 607 mpaka 610 nm; mchira wa gawoli umafika ku kuwala kotuluka kwa resorufin pafupifupi 590 nm. Utoto umene uli m'njira ya kuwala umayamwa kuwala kwina koyambitsa fluorescence komanso umayamwanso fluorescence ina yotuluka. Izi zimakhala ngati fyuluta yamkati yomwe imachepetsa kuwala kwa kabowo ngakhale kupanga resorufin sikunasinthe. Kaonekedwe ka sipekitiramu kamasinthanso malinga ndi mmene utotowo ulili: kusanthula zinthu zimene zimapanga masipekitiramu a methylene blue m'madzi ndi m'mayankho a cyclodextrin kumasiyanitsa monomer, dimer, ndi chophatikizana cha molekyulu yolandira ndi yolandiridwa kukhala mitundu itatu yokhala ndi ma coefficient osiyanasiyana a kuyamwa kuwala kuchokera pa 500 mpaka 700 nm. Choncho kukula kwa cholakwika chokhudza kuwala kumasintha ndi kuchuluka kwa utoto, kusonkhana kwake, ndi kumangirirana kwake. Poyesa, siyanitsani kuchepa kwa kuwala chifukwa cha kuyamwa kokha ndi kuzimitsidwa kwa fluorescence chifukwa cha kukhudzana kwa mamolekyulu pogwiritsa ntchito mayeso a kubwezeredwa kwa chizindikiro chowonjezedwa omwe afotokozedwa m'munsimu, chifukwa njira zothetsera mavutowa zimasiyana.

Njira 2 ndi kupikisana pa kusinthana kwa maelekitironi. Methylene blue yomwe yataya maelekitironi imalandira maelekitironi kuchokera ku NAD(P)H n'kupanga leuco methylene blue yopanda mtundu. Oxygen ya mamolekyulu imachotsanso maelekitironi amenewo n'kuibwezeretsa ku mtundu wabuluu, pamene ikupanga zinthu za oxygen zomwe zalandira maelekitironi, kuphatikizapo hydrogen peroxide. Kuzungulira kulikonse kumagwiritsa ntchito mphamvu zopereka maelekitironi zomwe zikanagwiritsidwa ntchito kupatsa resazurin maelekitironi, komanso kumagwiritsa ntchito oxygen pamene kukupanga peroxide pambali. Choncho chizindikiro chotsika cha Alamar Blue chingatanthauze kuti maelekitironi adutsa m'kuzungulira kwa methylene blue m'malo mopanga resorufin. Pa mbale yoyezera izi zimaoneka ngati kagayidwe ka zinthu katsika, mosasamala kanthu za zimene maselo achita. Zochita zomwezo za mankhwala zimafotokozanso msampha wofanana koma wooneka mosiyana m'zida zoyezera oxygen: utoto umene walandira maelekitironi ukachotsedwanso maelekitironi ndi oxygen, umayambitsa kugwiritsidwa ntchito kwa oxygen mwa zochita za mankhwala popanda zamoyo zilizonse. Choncho zitsanzo zoyerekeza za utoto zopanda zamoyo zimafunikanso poyezera kupuma, monga momwe kuyerekeza miyeso ya oxygen, ATP, ndi kusiyana kwa mphamvu yamagetsi pa nembanemba kumafotokozera pankhani ya mitochondria.

Chizindikiro chosinthika ndi kusintha kwa zamoyo zingakhale zenizeni zonse

Kafukufuku wa zebrafish ndi wofunika chifukwa chakuti savomereza kungosankha chimodzi mwa zinthu ziwirizi. Kusintha kwa zamoyo kunali kwenikweni: kugwiritsa ntchito oxygen kwa poyambira kunakwera m'miluza ya tsiku 1 pa milingo yonse iwiri yosamalira nsombazo; kupuma kogwirizana ndi ATP kunakwera pa mulingo wotsika; kusiyana kwa mphamvu yamagetsi pa nembanemba komwe kunayezedwa ndi choyezera cha JC-10 kunakwera pa tsiku lachiwiri; ndipo zolemba za RNA za magulu a mapuloteni a mitochondria zinatsika pa masiku oyamba ndi achinayi. Chosokoneza mayesowo chinalinso chenicheni: nsomba zomwe zinatsukidwa katatu musanafike pa gawo la Alamar Blue zinkakhalabe ndi utoto wabuluu wooneka m'mutu, m'kamwa, ndi m'dera lozindikira fungo. Ndipo timabowo topanda maselo, tokhala ndi utoto ndi chinthu choyezera, tinataya fluorescence pang'ono koma mokwanira kukhala kusiyana kofunika pakusanthula ziwerengero, popanda zamoyo. Kutsika kwa Alamar Blue komwe kunaoneka m'zamoyo pa masiku anayi ndi asanu kunali kwakukulu kuposa kusintha kwa zitsanzo zopanda maselo. Choncho olemba kafukufukuyu anaona zotsatirazo ngati kusintha kwenikweni kwa kagayidwe ka zinthu koonedwa kudzera pa galasi lopinditsa chithunzi pang'ono. Imeneyi ndi njira yolondola yoganizira. Chinthu chozungulira pakati pa kulandira ndi kutaya maelekitironi, chomwenso chimayamwa kuwala ngati utoto wabuluu, nthawi zambiri chimasintha njira ya zamoyo yomwe ikufufuzidwa komanso zochita za mankhwala za choyezera nthawi imodzi. Ntchito ya zitsanzo zoyerekeza ndi kuyeza kuchuluka kwa zomwe chilichonse chikuchititsa, osati kunena kuti chimodzi sichilipo. Phunziro lofanana likuchokera ku ntchito yofufuza kumangirirana kwa cyclodextrin: molekyulu yolandira itatsekera utotowo, kudetsa ndi kulimbikitsidwa kwa kulowetsedwa kwa glucose zinachepa limodzi. Izi zinasonyeza kuti kusintha kwa kagayidwe ka zinthu kunkafuna utotowo kukhudzana mwachindunji ndi zamoyo, osati kungokhala kusokoneza kosafotokoza bwino kwa kusinthana kwa maelekitironi. Kugwirizanitsa muyeso wa utoto wooneka ndi muyeso wa ntchito ya zamoyo ndi njira yeniyeni yosiyanitsira mmene chinthu chikugwirira ntchito ndi chosokoneza mayeso. Ndipo malangizo owerengera zonena za kagayidwe ka zinthu zochokera pa utoto amafotokozanso kachitidwe kameneka.

Zitsanzo zoyerekeza zomwe zimasiyanitsa zinthu zimenezi

Chitani mayesowa musanatanthauzire zotsatira zilizonse za methylene blue kuchokera pa mbale ya resazurin. Kuchuluka kwa zinthu, madzi osungiramo maselo, nthawi yodikirira kuti zinthu zichitane, ndi kuunikira ziyenera kufanana ndendende ndi zimene zagwiritsidwa ntchito pa mayeso a maselo, chifukwa njira iliyonse pamwambapa imadalira zinthu zimenezi.

Zitsanzo zoyerekeza 3 ndi 4 ndi ziwiri zimene zolemba zambiri za kafukufuku sizichita, ndipo zimene zolemba zambiri zokhudza methylene blue zimafunikira. Chitsanzo 3 chimazindikira zochita za mankhwala, chitsanzo 4 chimazindikira za kuwala, ndipo pamodzi zimakhazikitsa malire a chosokoneza mayeso musananene chilichonse chokhudza kusintha kwa zamoyo.

Njira zina zoyezera zodziimira pawokha, iliyonse ili ndi zofunika kuziganizira

Palibe mayeso achiwiri amodzi omwe angatsimikizire oyamba. Njira iliyonse yoyezera yodziimira pawokha imapewa njira imodzi yosokonezera koma imakhalabe pachiwopsezo cha ina. Choncho sankhani njira zophatikizana zomwe malo awo osatha kuzindikira safanana. Tebulo losankhira mayeso a zinthu zomwe zimachita nawo kusinthana kwa maelekitironi limafotokoza maganizo ophatikizira njira, ndipo malangizo a zoyezera kusiyana kwa mphamvu yamagetsi pa nembanemba amafotokoza mwatsatanetsatane zoyenera kusamala zokhudza fluorescence.

Muyezo wa Seahorse wa kugwiritsa ntchito oxygen umatsata maelekitironi kupita ku oxygen m'malo mopanga resorufin. Izi zimapewa kwathunthu zochita za mankhwala za choyezera, koma utotowo umagwiritsanso ntchito oxygen mwa zochita za mankhwala. Choncho zitsanzo za utoto zopanda mitochondria, m'madzi osungiramo maselo okhala ndi zinthu zonse, n'zofunika mosalephera. Mayeso a ATP ogwiritsa ntchito luciferase amagwiritsa ntchito kuwala kopangidwa ndi zochita za zamoyo m'malo mwa fluorescence ya resorufin. Choncho amapewa kulowererana kwa kuwala komanso kupikisana pa ma enzyme a reductase, koma amasonyeza kuchuluka kwa ATP yotsala chifukwa cha kupanga ndi kugwiritsa ntchito, osati liwiro la kupangidwa kwake. Zoyezera kusiyana kwa mphamvu yamagetsi pa nembanemba monga TMRM kapena JC-10 zimayankha ngati kusiyana kwa magetsi kukusungikabe. Komabe, zimatulutsa fluorescence m'gawo lomwelo la kuwala kooneka lomwe utotowo umayamwa, choncho kudetsa kwabuluu kotsala kumasokonezanso miyeso imeneyi ndipo kumafuna zitsanzo za utoto wokha pa mulingo uliwonse wa utoto. Kuyeza zolemba za RNA za tizigawo ta magulu a mapuloteni a kupuma kumapewa mavuto a kuwala kwathunthu ndipo kumaphatikiza kusintha kochitika m'maola. Izi zimathandizira miyeso ya mbale yomwe imasonyeza kusintha kwa mphindi zochepa.

Choncho zinthu zochepa zofunika kuti zonena za kusintha kwa kagayidwe ka zinthu chifukwa cha methylene blue zikhale zodalirika ndi izi: zotsatira za resazurin zokhala ndi zitsanzo zoyerekeza 1 mpaka 4, pamodzi ndi muyeso umodzi wosagwiritsa ntchito resazurin womwe umadalira mfundo ina ya sayansi ya zinthu, komanso kufotokoza ngati kusinthako kukusonyeza kuchuluka kwa maselo, kuyenda kwa maelekitironi operekedwa pa selo lililonse, kapena zonsezi. Zocheperapo pamenepa zimasiya wowerenga osatha kusiyanitsa kagayidwe ka zinthu kotsika ndi kabowo kamene kuwala kwake kwachepa.

Tsamba lolembapo la kuyang'anira kusokoneza mayeso

Koperani tsambali m'kope la laboratory pa mayeso aliwonse ophatikiza utoto ndi choyezera cha kusinthana kwa maelekitironi. Ndi chida choyambirira chokonzedwera nkhaniyi: lembani mzere umodzi pa mulingo uliwonse wa utoto.

A. Njira za chizindikiro. Pa mulingo uliwonse, lembani: ngati mukuyembekezera monomer kapena dimer kukhala yochuluka kwambiri (micromolar yochepa poyerekeza ndi makumi a micromolar ndi kupitirira), kuyamwa kuwala kwa zinthu zonse zomaliza m'kabowo pa 590 nm m'kabowo kopanda maselo, ndi peresenti ya kubwezeredwa kwa chizindikiro cha resorufin yowonjezedwa. Ngati kubwezeredwako kutsika pansi pa pafupifupi 90 peresenti, tengani miyeso yonse ya fluorescence pa mulingo umenewo ngati yachepetsedwa ndi zochita za kuwala, osati ngati miyeso yolondola yeniyeni ya zamoyo.

B. Kufufuza zochita za mankhwala. Lembani fluorescence ya utoto ndi chinthu choyezera popanda maselo ngati peresenti ya chizindikiro cha poyambira cha chinthu choyezera chokha pa nthawi iliyonse yowerenga. Ngati kusiyana kumakula pakapita nthawi, utotowo ukuchita ndi dongosolo la choyezera panthawi ya mayeso, ndipo kuwerenga komaliza kokha kudzasocheretsa. Ganizirani kuwerenga kusintha pakapita nthawi kapena kugwiritsa ntchito choyezera china.

C. Kufananitsa ndi zamoyo. Tchulani njira ina yodziimira pawokha yomwe mwasankha pa mayesowa, chitsanzo chake cha utoto chopanda zamoyo, ndi zotsatira zomwe mukuyembekezera ngati zotsatira za resazurin zilidi zenizeni. Kutsika kwenikweni kwa kagayidwe ka zinthu kuyenera kusintha muyeso wodziimira pawokha m'njira yogwirizana. Ngati muyeso winawo sukugwirizana, musakhulupirire zotsatira zilizonse pakadali pano; konzani mayesowo mwatsopano m'malo motenga avareji ya ziwirizo.

D. Chiganizo cha chigamulo. Lembani chiganizo chimodzi cha mtundu uwu: pa mulingo ndi gawo lotchulidwa, chizindikiro cha resazurin chinasintha ndi kuchuluka kotchulidwa, ndipo kuchuluka kotchulidwa kwa kusintha kumeneko ndi chosokoneza mayeso chooneka popanda maselo; muyeso wodziimira pawokha (ukugwirizana kapena sukugwirizana). Ngati mbali iliyonse sinadzazidwe, mayesowo sanathe.

Methylene blue ikadali choyezera chothandiza cha kagayidwe ka zinthu, ndipo kafukufuku wa zebrafish akusonyeza kusintha kwenikweni kwa mitochondria pa milingo imene malo ambiri ogwirira ntchito amathira m'ngalande tsiku lililonse. Utotowu umangofuna kuyezedwa ndi zida zimene sungathe kusokoneza. Uupatseni timabowo tokhala ndi utoto wokha, mayeso a kubwezeredwa kwa chizindikiro chowonjezedwa, ndi muyeso umodzi wodalira mfundo ina ya sayansi ya zinthu. Pamenepo kusokoneza mayeso kumasiya kukhala msampha n'kukhala chinthu choyezeka chokhala ndi nambala yake.