Cocer Peptides ye 
ŋlɔe ɣleti 1 enye sia
NYATAKAKAWO KPLE NUSIWO WOTSƆ ƑE NYATAKAKA SIWO KAtã WOÐO LE NYATAKAKADZRAÐOƑE SIA ME LA KPLE NYATAKAKAWO kaka KPLEE NUFIAFIA ƑE TAÐOÐOWO KO.
Wotrɔ asi le atike siwo wona le nyatakakadzraɖoƒe sia ŋu na numekuku le vitro ɖeɖeko. Wowɔa numekuku le vitro (Latingbe me: *le ahuhɔ̃e me*, si gɔmee nye le ahuhɔ̃e me) le amegbetɔ ƒe ŋutilã godo. Atike siawo menye atikewo o, United States ƒe Nuɖuɖu Kple Atike Ŋuti Dɔwɔƒe (FDA) meda asi ɖe wo dzi o, eye mele be woazã wo atsɔ axe mɔ ɖe atikewɔwɔ, dɔléle, alo dɔléle aɖeke nu, adae, alo adae o. Se de se vevie be woatsɔ atike siawo ade amegbetɔ alo lãwo ƒe ŋutilã me le mɔ ɖesiaɖe nu.
Melanotan-2 ƒe nyatakaka kpui aɖe
Melanotan-2 (MT-2) nye heptapeptide si wowɔna le tsatsam eye wònye α-melanocyte-stimulating hormone (α-MSH) ƒe kpeɖeŋutɔ. Ewɔa akpa vevi aɖe le lãmetsiŋusẽ siwo doa ŋusẽ melanocyte ƒe dɔwɔwɔ nyuie me. MT-2 wɔa eƒe ŋusẽkpɔɖeamedziwo koŋ to nuwɔwɔ kple melanocortin 1 xɔla (MC1R) me. MC1R dzena le melanocytes ƒe anyime le teƒe geɖe. Ne MT-2 bla ɖe xɔla sia ŋu la, edzea lãmenugbagbeviwo me dzesimɔ vovovowo gɔme, eye mlɔeba la, edoa melanin ƒe wɔwɔme kple eƒe mama ɖe ŋgɔ, si wɔnɛ be ŋutigbalẽ ƒe amadede trɔna.
Nɔnɔmetata 1 Melanotan II ƒe wɔwɔme.
Melanotan-2 zazã le Dzɔdzɔmeŋutinunya me lãgbalẽŋudɔwɔwɔ me
(1) Mɔ̃ si Wotsɔna Ðea Lãgbalẽe
Melanin ƒe wɔwɔme dodo ɖe ŋgɔ: Ne MT-2 bla ɖe MC1R ŋu vɔ la, enaa adenylate cyclase wɔa dɔ, si doa adenosine triphosphate (ATP) ƒe tɔtrɔ ɖe cyclic adenosine monophosphate (cAMP) ɖe ŋgɔ le lãmenugbagbevi la me. cAMP wɔa dɔ abe dɔla evelia ene tsɔ naa protein kinase A (PKA) wɔa dɔ, si hã wɔa phosphorylate na ŋku ƒe nuŋɔŋlɔ ƒe akpa sue si do ƒome kple ŋku (MITF). MITF nye nu vevi aɖe si kpɔa melanin ƒe wɔwɔme dzi, si doa melanin ƒe wɔwɔme ƒe enzymewo abe tyrosinase, tyrosinase-related protein 1 (TRP-1), kple tyrosinase-related protein 2 (TRP-2) ƒe ɖeɖefia ɖe dzi, si wɔnɛ be melanin ƒe wɔwɔme nɔa kabakaba.
Amadede ƒe ƒuƒuwo ƒe mama kple wo tsɔtsɔ yi teƒe bubuwo: Tsɔ kpe ɖe melanin ƒe wɔwɔme dodo ɖe ŋgɔ ŋu la, MT-2 kpɔa ŋusẽ ɖe amadede ƒe ƒuƒuwo ƒe mama kple wo tsɔtsɔ yi melanocytes me hã dzi. Numekukuwo ɖee fia be MT-2 ate ŋu aɖɔ protein siwo do ƒome kple lãmenugbagbeviwo ƒe dɔwɔwɔ ɖo, si doa melanosomes (organelles siwo me melanin le) ƒe ʋuʋu tso melanocytes ƒe titina nuto me yi lãmenugbagbevi la ƒe golɔgoewo me ɖe ŋgɔ, eye mlɔeba la, melanin trɔna yia keratinocytes me, si wɔnɛ be ŋutigbalẽ ƒe amadede bliboa nado viviti.
(2) Ne wotsɔe sɔ kple lãgbalẽŋudɔwɔwɔ ƒe mɔnu xoxowo
Seɖoƒe siwo le lãgbalẽŋudɔwɔwɔ ƒe mɔnu xoxowo ŋu: Lãgbalẽŋudɔwɔwɔ ƒe mɔnu siwo wozãna tsã koŋue nye ŋdɔkutsu dzatsɛ kple lãgbalẽwutikewo zazã. Gake keklẽŋusẽ si woyɔna be ultraviolet (UV) ƒe keklẽ didi—eɖanye tso dzɔdzɔme ɣe ƒe keklẽ alo UV si dona tso lãgbalẽŋudɔwɔnuwo gbɔ o—hea afɔku gãwo vɛ. UV keklẽ ate ŋu ana ŋdɔkutsu dzatsɛ eye wòabiã, eye ne enɔ eŋu ɣeyiɣi didi la, enaa ŋutigbalẽ me kansa ƒe afɔkua dzina ɖe edzi esime wònaa ŋutigbalẽa le tsitsim kabakaba, si wɔnɛ be ŋutigbalẽa ƒe ŋeŋe kple eƒe ʋuʋu.
Viɖe siwo le Melanotan-2 ƒe lãgbalẽŋudɔwɔwɔ ŋu: To vovo na ema la, lãgbalẽŋudɔwɔwɔ si MT-2 hena vɛ menɔa te ɖe UV ƒe dɔwɔwɔ dzi o, le nukpɔsusu nu la, eɖea afɔku si le ŋutigbalẽ ƒe gbegblẽ si tso UV gbɔ dzi kpɔtɔna. Tsɔ kpe ɖe eŋu la, MT-2 ate ŋu ana ŋutigbalẽ ƒe amadede natrɔ ɖedzesi le ɣeyiɣi kpui aɖe ko me, eye ŋutigbalẽ ƒe amadede sia sɔ pɛpɛpɛ, si wɔnɛ be ŋutigbalẽ ƒe amadede si mesɔ o ƒe nya siwo ŋdɔkutsu dzatsɛ alo lãgbalẽŋudɔwɔnu zazã hena vɛ.
(3) MT-2 Tanning ƒe Dɔwɔwɔ ƒe Kpɔɖeŋuwo
Lãmesẽfefewɔwɔ Kple Ŋutilãtutuɖo: Wozãa MT-2 geɖe le kamedede kple ŋutilãtutuɖo lɔ̃lawo dome. Zi geɖe la, ame siawo dina be yewoaɖe ŋutigbalẽ ɖa be yewoate gbe ɖe lãmekawo ƒe gɔmesese dzi, si wɔnɛ be yewoƒe ŋutilã dzena nyuie wu le fefewɔƒea alo le hehexɔxɔ ƒe wɔwɔfiawo me. MT-2 nana wokpɔa akɔbli ƒe ŋutigbalẽ ƒe amadede si wodi la kaba evɔ womeɖoa ŋu ɖe ŋdɔkutsu dzatsɛ ɣeyiɣi didi alo lãgbalẽŋudɔwɔnu zazã enuenu ŋu o, si wɔnɛ be woƒe dzedzeme bliboa nyona ɖe edzi.
Gbesiagbe Lãgbalẽŋudɔlɔ̃lawo: Ame aɖewo siwo le ŋutigbalẽ si wotsɔ lãgbalẽ wɔe si le atsyã me dim hã ɖea ɖetsɔleme fiana ɖe MT-2 ŋu. Le amesiwo di be ŋutigbalẽ nanɔ lãmesẽ me, si ƒe amadede nye akɔbli gake wotsi dzi ɖe nusiwo ate ŋu agblẽ le ŋutigbalẽ ŋu le lãgbalẽŋudɔwɔwɔ ƒe mɔnu xoxowo me gome la, MT-2 nye tiatia bubu. Woate ŋu awɔ lãgbalẽɖeɖedɔa le aƒeme to mɔnu siwo sɔ zazã me, si sɔ vie.
Akpa Si Melanotan-2 Wɔna Le Ŋutilã Takpɔkpɔ Me
(1) Mɔnu si Kpɔa Foto Takpɔnu
Melanin ƒe keklẽŋusẽ takpɔkpɔ: Melanin si MT-2 wɔ la xɔa ultraviolet (UV) ŋusẽ, si trɔae wòzua dzoxɔxɔŋusẽ si megblẽa nu le ame ŋu o eye wòkakana, si wɔnɛ be wòɖea nusiwo UV keklẽ gblẽna le ŋutigbalẽ me lãmenugbagbeviwo ƒe DNA ŋu tẽ dzi kpɔtɔna. Melanin wɔa dɔ abe dzɔdzɔmevɔ si kpɔa ŋutigbalẽa ta ene, eye wòxɔa UV keklẽ nyuie hekakanɛ hafi ɖoa ŋutigbalẽ ƒe lãmenugbagbevi goglowo gbɔ, si wɔnɛ be domenyiŋusẽfianu ƒe tɔtrɔ si UV hena vɛ kple lãmenugbagbeviwo ƒe gbegblẽ ƒe afɔkua dzi ɖena kpɔtɔna.
Antioxidant ƒe dɔwɔwɔ si dzi ɖe edzi: Menye ɖeko MT-2 doa melanin ƒe wɔwɔ ɖe ŋgɔ ko o, ke enaa antioxidant enzymes siwo le ŋutigbalẽ ƒe lãmenugbagbeviwo me, abe superoxide dismutase (SOD) kple glutathione peroxidase (GSH-Px) ene ƒe dɔwɔwɔ dzina ɖe edzi hã. Enzyme siawo siwo tsia dzoxɔxɔ nu ate ŋu aɖe oxygen ƒomevi siwo wɔa dɔ (ROS) siwo UV keklẽŋusẽ wɔna, abe superoxide anions kple hydroxyl radicals ene ɖa, si ana ROS nagagblẽ nu le lipids, proteins, kple DNA ŋu le ŋutigbalẽ me lãmenugbagbeviwo me o, si ana lãmenugbagbeviwo ƒe ŋutilã ƒe dɔwɔwɔ nyuie nanɔ anyi.
(2) Ŋutilã Takpɔkpɔ
Le lãwo dodokpɔ aɖewo me la, wotsɔ MT-2 da dɔ na lã siwo wodo kpɔ hafi wotsɔ UV keklẽ de wo me. Nusiwo do tso eme ɖee fia be ɣe ƒe dzoxɔxɔ ƒe sesẽme dzi ɖe kpɔtɔ ŋutɔ le ƒuƒoƒo si wotsɔ MT-2 da dɔe me, eye teƒe siwo ʋumenugbagbeviɣidɔ kple lãmenugbagbeviwo ƒe gege ɖe lãme na ame dzi ɖe kpɔtɔ. Tsɔ kpe ɖe eŋu la, woɖe DNA ƒe gbegblẽ ƒe dzesiwo abe 8-hydroxy-2’-deoxyguanosine (8-OHdG) ƒe agbɔsɔsɔ si le ŋutigbalẽ me lãmenugbagbeviwo me dzi kpɔtɔ, si ɖee fia be MT-2 kpɔa ame ta tso DNA ƒe gbegblẽ si UV hena vɛ me.
Lãmenugbagbeviwo dodokpɔ siwo wowɔ le vitro hã ɖo kpe MT-2 ƒe ŋutigbalẽtakpɔkpɔ ƒe ŋutete dzi. Wotsɔ MT-2 do ŋgɔ tsɔ da dɔ na melanocyte alo keratinocyte siwo wode agblee eye emegbe wotsɔ wo de UV nɔnɔme me. Numekuku sia ɖee fia be lãmenugbagbeviwo ƒe agbetsitsi ƒe agbɔsɔsɔme dzi ɖe edzi, apoptosis ƒe agbɔsɔsɔ dzi ɖe kpɔtɔ, eye antioxidant enzyme ƒe dɔwɔwɔ le lãmenugbagbeviwo me dzi ɖe edzi, eye ŋgɔyiyi le oxidative stress-si do ƒome kple oxidative stress ƒe dzesiwo me. Esia ɖee fia be MT-2 ate ŋu ana ŋutigbalẽa nate ŋu anɔ te ɖe UV ƒe nugbegblẽ nu le lãmenugbagbeviwo ƒe ɖoɖo nu.
(3) Dɔwɔwɔ ƒe Nɔnɔmewo
Le ame ɖekaɖeka siwo ƒoa wo ɖokui ɖe gota gome nuwɔnawo me enuenu, abe kamedefefewɔlawo kple gota dɔwɔlawo ene gome la, ŋdɔkutsu dzatsɛ ɣeyiɣi didi nana UV ƒe nugbegblẽ le wo ŋu ƒe afɔku geɖe wu. Nusiwo MT-2 ate ŋu akpɔ ŋutigbalẽ ta ate ŋu ana woakpɔ ametakpɔnu bubu aɖe. Ne wozã MT-2 nyuie tsɔ kpe ɖe ɣe ƒe keklẽ takpɔkpɔ ƒe mɔnu xoxowo abe ɣe ƒe keklẽŋusẽtike dede ame ŋu kple ɣe ƒe kposɔ dodo ene ŋu la, woate ŋu ana ŋutigbalẽtakpɔkpɔ tso UV keklẽ me nadzi ɖe edzi, si aɖe ɣe ƒe dzoxɔxɔ, ŋutigbalẽ ƒe ŋutigbalẽ ƒe dɔléle, kple ŋutigbalẽdɔléle siwo do ƒome kple UV ɣeyiɣi didi ƒe afɔkua dzi akpɔtɔ. Ameha aɖewo, le domenyiŋusẽfianu, UV zazã ɣeyiɣi didi ƒe ŋutinya, alo ŋutigbalẽ ƒe nɔnɔme tɔxɛ aɖewo ta, le afɔku gã aɖe me be woaxɔ ŋutigbalẽ me kansa. MT-2 ƒe fototakpɔnu kple antioxidant ƒe ŋusẽkpɔɖeamedzi ate ŋu akpe ɖe wo ŋu woaɖe woƒe ŋutigbalẽ me kansa xɔxɔ ƒe afɔkua dzi akpɔtɔ.
Numekuku ƒe Nɔnɔme Fifia
Fifia la, wose alesi MT-2 wɔa dɔe gɔme nyuie vie, si me eƒe kadodo kple MC1R xɔla, lãmenugbagbeviwo me dzesimɔwo ƒe dɔwɔwɔ, kple melanin ƒe wɔwɔme kple mama ƒe ɖoɖowɔwɔ hã le. Gake wogale nya aɖewo me dzrom tsitotsito, abe ŋusẽ si MT-2 kpɔna ɖe melanocyte ƒe lãmenugbagbeviwo ƒe dɔwɔwɔ dzi ɣeyiɣi didi kple eƒe dɔwɔwɔ ƒe mɔnu vovovo siwo le ame ɖekaɖeka siwo ƒe ŋutigbalẽ ƒe ƒomevi to vovo me ene.
Nyanuwuwuw
Melanotan-2 wɔa akpa vevi aɖe le dzɔdzɔmeŋutinunya me lãgbalẽŋudɔwɔwɔ kple ŋutigbalẽtakpɔkpɔ me. Le atsyɔ̃ɖoɖo ƒe nukpɔsusu nu la, enaa dzɔdzɔmeŋutinunya me lãgbalẽŋudɔwɔwɔ ƒe mɔnu si meɖoa ŋu ɖe UV ƒe dɔwɔwɔ ŋu o la ame ɖekaɖeka siwo le ŋutigbalẽ ƒe amadede si le lãmesẽ dim dim, si wɔnɛ be woƒoa asa na ŋdɔkutsu dzatsɛ kple ŋutigbalẽ ƒe tsitsi si do ƒome kple ŋdɔkutsu dzatsɛ kple ŋutigbalẽ ƒe tsitsi ƒe aba siwo wozãna tsã, eye wòkpɔa nudidi eve siwo ku ɖe dedienɔnɔ kple dɔwɔwɔ nyuie le lãgbalẽtata me gbɔ. Le ŋutigbalẽ takpɔkpɔ gome la, MT-2 tua ametakpɔnu ɖe UV keklẽ ŋu to melanin ƒe wɔwɔme dodo ɖe ŋgɔ kple antioxidant ŋutete dodo ɖe ŋgɔ me, si naa tiatia yeyewo amesiwo le gota gome dɔwɔnawo wɔm.
Dzɔtsoƒewo
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Adzɔnu si li na numekuku zazã ɖeɖeko:
