Melanostatine-5, feem ntau hu ua Nonapeptide-1, yog cov khoom siv hluavtaws biomimetic nonapeptide raw khoom. Cov khoom ua kom zoo dua qub yog tawm - cov hmoov dawb. Nws sib tw thaiv cov MC1R receptor ntawm daim tawv nqaij melanocytes raws li cov kab sib txuas ntawm cov nonapeptide uas muaj D-hom chiral amino acids, thaiv cov -MSH melanin- tsim txoj hauv kev los ntawm qhov chaw ntawm lub teeb liab. Tsis zoo li downstream tyrosinase inhibitors xws li hydroquinone thiab arbutin, nws tau dhau los ua cov khoom siv tawv nqaij zoo nkauj zoo nkauj thiab cov tawv nqaij pigmentation kev tshawb fawb tshawb fawb reagent vim nws txoj kev tswj hwm tus yam ntxwv. Nws nyob hauv daim ntawv thov ruaj khov nyob rau hauv kev lag luam saw ntawm cov khoom siv tshuaj pleev ib ce, hauv vitro melanin biochemical tshawb pom, thiab kev tshawb fawb melanocyte physiological.
⚛️ Cov yam ntxwv peptide saw caj qaum ntawm chiral heterostructure nonapeptide
Melanostatine-5 muaj tag nrho cov amino acid sequence H-Met-Pro-D-Phe-Arg-D-Trp-Phe-Lys-Pro-Val{12}Val{12}ValH C₆₁H₉₀N₁₈O₁₃, thiab molecular hnyav 1206.52. Tag nrho cov saw peptide yog tsim los ntawm cuaj pawg ntawm cov amino acids condensed los ua ib qho linear amide qaum. Qhov kev tso ntawm ob lub dextrorotatory chiral amino acids, D-Phe thiab D-Trp, nyob rau hauv qhov sib lawv liag yog qhov tseem ceeb ntawm cov txheej txheem rau nws cov MC1R siab antagonistic kev ua. Cov pa peptides feem ntau muaj L-configuration amino acids; ob pawg D-hom chiral twist peptide saw lub spatial coil zoo li, tso cai rau cov molecular spatial conformation kom haum haum rau hydrophobic binding hnab tshos ntawm MC1R receptor protein.
Cov saw peptide yog terminally khi los ntawm methionine thiab valine, feem. Arginine thiab lysine nyob rau hauv nruab nrab seem nqa polar side-chain amino pawg, kom ntseeg tau tias ob qho tib si hydrophilic solubility thiab receptor electrostatic binding muaj peev xwm. Discontinuous proline cyclic side chains hloov peptide saw curvature, segmenting thiab kho cov folding kev taw qhia kom tsis txhob random coiling thiab poob ntawm lub hom phiaj muaj peev xwm. Qhov thib tsib amino acid ntawm D-Trp thiab thib rau Phe benzene nplhaib qauv ua hauj lwm ua ke los tsim ib tug hydrophobic chimeric site, ib tug tseem ceeb structural unit rau occupying lub -MSH protonate binding cheeb tsam. Tshem tawm cov txheej txheem ntawm D-hom chiral residues txo cov receptor affinity tas li, ncaj qha ua rau melanin tsis muaj zog-inhibiting lom lom.
Hais txog physicochemical zog, kws tshuaj -qibMelanostatine-5yog cov hmoov dawb zoo, yooj yim soluble hauv dej ntshiab, propylene glycol, thiab glycerin aqueous daws, tab sis sparingly soluble nyob rau hauv tej yam nonpolar organic solvents. Cov khoom siv raw yog npaj raws li kev npaj siv cov khoom siv -theem peptide synthesis txheej txheem, nrog rau kev sib xyaw ua ke thiab kev ua kom huv ntawm Fmoc tiv thaiv pawg. Cov khoom nyoos yog purified los ntawm thim rov qab -theem chromatography kom tshem tawm cov amino acid luv peptide impurities uas ploj lawm. Cov khoom kawg ua tiav qhov kev ua haujlwm zoo ntawm ntau dua 98.5% los ntawm HPLC. Acetic acid-hloov ntsev- hom raw cov ntaub ntawv nthuav tawm ntxiv txhim kho cov dej solubility, ua rau lawv tsim nyog rau kev tsim cov dej-raws li cov khoom tu tawv nqaij xws li cov tshuaj aqueous thiab serums.
Thaum khaws cia rau hauv chav tsev kub, deb ntawm lub teeb, thiab kaw hauv qhov chaw nruab nrab, cov qauv peptide daim ntawv cog lus tseem ruaj khov. Txawm li cas los xij, kev cuam tshuam ntev rau cov kua qaub lossis alkalis hauv cov dej da dej tuaj yeem ua rau amide bond hydrolysis thiab saw breakage, nrog rau oxidation thiab deterioration ntawm sab saw amino pawg. Thoob plaws hauv cov txheej txheem cia khoom raw, kev sib xyaw ntawm acidic thiab alkaline excipients yog zam. Qhov tshwj xeeb teeb tsa ntawm chiral nonapeptide ua rau muaj kev xaiv ntau dua rau MC1R dua li lwm cov melanocortin receptors xws li MC3R, MC4R, thiab MC5R. MC1R binding Ki tus nqi yog tsawg li 40 nM, thaum lub binding tas li ntawm lwm yam subtypes receptors nyob rau hauv micromolar theem, ib txwm tsim ib tug zoo qauv ntawm lub hom phiaj.
🎯 Kev sib tw antagonism ntawm MC1R nce zuj zus blocks melanin synthesis signals
Melanostatine-5's ua tiav melanin- inhibiting physiological txoj hauv kev ua raws tsib- txheej txheej txheej txheej txheej txheej: receptor blockade, intracellular cAMP downregulation, transcription factor inhibition, tseem ceeb enzyme kev txo qis, thiab inhibition ntawm melanin granule ntau lawm. Nws qhov chaw ntawm qhov kev txiav txim yog nyob rau ntawm theem ntawm cov teeb liab transduction theem ntawm melanin ntau lawm, tsis ncaj qha tua melanocytes. Nws tsuas yog thaiv cov melanin- txhawb cov cim pib los ntawm lwm yam. Yog li ntawd, ntev - siv tshuaj pleev ib ce yog tsis muaj kev pheej hmoo ntawm cytotoxicity los yog keratin exfoliation, ua rau nws haum rau ntev brightening thiab txias rau tag nrho cov hom ntawm cov tawv nqaij rhiab heev.
- Hauv thawj kauj ruam, tom qab nqus los ntawm daim tawv nqaij epidermis,Melanostatine-5nquag txuas mus rau MC1R receptor nyob rau saum npoo ntawm melanocyte daim nyias nyias. Leveraging nws receptor-binding domain, uas zoo ib yam li -MSH, nws muaj kev sib tw occupies tag nrho cov proton-ligand binding sites. Endogenous -MSH secreted los ntawm lub cev tom qab ntawm daim tawv nqaij raug UV hluav taws xob los yog o tuaj yeem tsis tuaj yeem thauj tog rau nkoj thiab qhib lub receptor, ncaj qha txiav tawm qhov pib teeb liab rau melanin ntau lawm ntawm nws qhov chaw. Qhov kev sib tw sib tw no muaj txiaj ntsig zoo txawm tias nyob ntawm nanomolar concentrations, nrog rau IC50 tus nqi tsuas yog 2.5 nM rau thaiv -MSH-induced intracellular cAMP nce thiab IC50 tus nqi ntawm 11 nM rau inhibiting melanosome diffusion. Kev tswj lub teeb liab tuaj yeem ua tiav nrog cov tshuaj tsawg heev.
- Hauv cov kauj ruam thib ob, tom qab MC1R receptor tsis ua haujlwm, downstream G protein-coupled signaling ib txhij lawm, adenylate cyclase kev ua txuas ntxiv poob qis, thiab cov concentration ntawm cyclic adenosine monophosphate (cAMP) hauv melanocytes ib txwm txo qis. cAMP, raws li ib tug intracellular thib ob tub txib, yog ib qho tsim nyog yuav tsum tau ua ua ntej pib cov kab mob melanin tom ntej. Cov neeg xa xov tsis txaus tiv thaiv qhov qis qis ntawm kev loj hlob thiab melanin- txhawb nqa cov lus qhia, cuam tshuam tag nrho UV- ua rau lub voj voog hyperpigmentation.
- Hauv cov kauj ruam thib peb, qhov tsis tshua muaj intracellular cAMP ib puag ncig tswj cov qib qhia cov noob ntawm MITF (microphthalmia- cuam tshuam txog kev hloov pauv). MITF yog tus tswv hloov pauv tswj peb qhov tseem ceeb ntawm cov proteins hauv melanin synthesis: tyrosinase, TRP1, thiab TRP2. Txo cov kev sib txuas lus sib txuas ncaj qha cuam tshuam qhov kev txhais lus ntawm peb qhov kev ua haujlwm proteases, txo cov enzyme reserves catalyzing melanin synthesis ntawm qib noob. Tsis zoo li arbutin, uas tsuas yog inactivates mature tyrosinase raws li ib lub hom phiaj, cov khoom no inhibits zus tau tej cov saw ntawm tag nrho cov enzymes proteins los ntawm sab saum toj mus rau hauv qab.
- Hauv theem plaub, cov theem ntawm intracellular tyrosinase, TRP1, thiab TRP2 tsis tu ncua, txo cov catalytic efficiency ntawm tyrosine hloov dua siab tshiab rau dopa thiab dopaquinone. Qhov no ua rau cov khoom tsis txaus ntawm dopaquinone ua ib qho melanin precursor, ua rau qeeb melanin monomer polymerization cov tshuaj tiv thaiv. Hauv vitro cell kab lis kev cai cov ntaub ntawv qhia tau hais tias tag nrho cov ntsiab lus melanin hauv melanocytes tuaj yeem txo los ntawm 27% mus rau 43% nyob rau tib lub sijhawm kab lis kev cai, ua tiav cov tshuaj tiv thaiv melanin tsis tu ncua es tsis yog cov tshuaj ntxuav tes sai.
- Hauv qib tsib, melanosomes tsis tuaj yeem loj hlob ib txwm thiab raug thauj mus rau keratinocytes. Thaum cov keratinocytes qub raug tshem tawm, lawv tshem tawm cov xim qub qub, thiab cov keratinocytes tshiab tsis nqa cov melanin ntau dhau lawm. Daim ntawv thov tshuaj pleev ib ce rau 28 hnub tuaj yeem maj mam ploj pob txuv nti, tshav ntuj, thiab tom qab- mob hyperpigmentation. Raws li lub pharmacological logic ntawm upstream teeb liab kev cai, nws tsis cuam tshuam nrog lub hauv paus physiological ciaj sia taus ntawm melanocytes, tswj cov kab melanin ntau lawm yuav tsum tau rau cov tawv nqaij tiv thaiv tshav ntuj, thiab zam cov tawv nqaij photosensitivity thiab fragility teeb meem tshwm sim los ntawm ntau whitening.
🧬 Cov khoom xyaw tshuaj pleev ib ce thiab Biochemical Research
Melanostatine-5's core industrial daim ntawv thov yog nyob rau hauv kev tsim ntawm siab- kawg cov khoom xyaw ua kom zoo nkauj. Cov tuam txhab lag luam tshuaj pleev ib ce feem ntau muab nws tso rau hauv cov tshuaj pleev kom ci, qhov chaw -fading essences, daim tawv nqaij-cov tshuaj pleev ib ce, thiab hnub ci- tshuaj pleev thaiv hnub ntawm tus qauv sib ntxiv ntawm 0.5% mus rau 3%. Ua ke nrog hyaluronic acid, panthenol, thiab tranexamic acid, nws synergistically optimizes mis kev ua tau zoo, muab ntev -ntev nyem rau tom qab- sunburn dullness, pob txuv caws pliav pigmentation, thiab melasma daim tawv nqaij. Nws cov khoom peptide maj mam ua rau nws tsim nyog rau cov khoom ci ci uas kho cov tawv nqaij barrier tom qab cov txheej txheem kom zoo nkauj, ua rau nws yog ib qho ntawm cov khoom xyaw tseem ceeb hauv kev tu tawv nqaij.
Ntau- ntau npaum li cas daim ntawv kho mob ntawm daim tawv nqaij txuas ntxiv nthuav dav cov ntaub ntawv raw cov ntawv thov scenarios. Ntxiv rau cov dej ib txwm siv- cov tshuaj pleev ib ce thiab tshuaj pleev ib ce, kev lag luam sib xyaw ua keMelanostatine-5nrog rau kev ua kom zoo dua los npaj lyophilized flash- tso cov hmoov thiab ob- theem qauv ntawm cov roj yam tseem ceeb. Liposome encapsulation ntawm cov ntaub ntawv hloov kho txhim kho epidermal penetration efficiency, txo cov transdermal poob ntawm cov khoom siv peptide siab heev, thiab ua rau kom muaj txiaj ntsig zoo ntxiv hauv stratum corneum thiab melanocyte txheej. Cov ntaub ntawv noj tshuaj tshiab no txuas ntxiv ua rau muaj kev xav tau loj - cov khoom siv raw khoom, ua kom muaj txiaj ntsig zoo ntawm cov khoom kawg - cov khoom tu tawv nqaij.
Hauv cov chaw soj nstuam biochemical, melanin physiological labeling thiab hauv vitro tshuaj ntsuam xyuas yog cov ntawv thov tseem ceeb ntawm cov khoom siv purity siab. Cov tuam txhab biochemical reagent tsim cov ntawv sau npe - qib Melanostatine-5 raws li kev tswj hwm zoo rau MC1R receptor antagonism kev soj ntsuam, tsim cov qauv tshuaj ntsuam vitro melanocyte kab lis kev cai rau kev tshuaj ntsuam thawj zaug ntawm cov tshuaj dawb tshiab peptides thiab tyrosinase inhibitor lead compounds. Nws kuj ua hauj lwm raws li tus qauv sab nraud rau cov kua chromatography, quantitatively soj ntsuam cov ntsiab lus zoo ntawm nonapeptides nyob rau hauv cov lag luam muaj cov khoom tu tawv nqaij, standardizing tus zoo tswj cov qauv rau whitening cosmetic raw cov ntaub ntawv.
Dermatological yooj yim physiological kev tshawb fawb nthuav dav daim ntawv thov ciam teb ntawm cov khoom siv raw. Cov koom haum tshawb fawb siv cov khoom no los tsim cov qauv hauv vitro pathological ntawm pigmentation, simulating cov txheej txheem ntawm o thiab ultraviolet hluav taws xob-induced pigmentation tsim, soj ntsuam cov kev hloov hauv melanin qhia ua ntej thiab tom qab siv tshuaj, elucidating lub pathogenesis ntawm melasma thiab post-inflammatory melanosis, muab cov ntaub ntawv pigment rau optimizing {3. dermatology, thiab txuas ntxiv qhov chaw thov ntawm cov khoom siv raw no hauv kev tshuaj ntsuam xyuas tshuaj nruab nrab.
Txoj kev loj hlob ntawm cov qauv kev tu plaub hau tau qhib rau cov neeg siv khoom lag luam tshiab. Tsawg-kev sib xyaw ua ke ntxiv rau cov plaub hau ntxiv dag zog thiab pigmentation- txwv tsis pub cov tshuaj zawv plaub hau thiab cov tshuaj txias tuaj yeem tiv thaiv melanin txawv txav hauv cov hauv paus plaub hau thiab txhim kho cov xim plaub hau tsaus nti. Nyob rau tib lub sijhawm, los ntawm leveraging receptor regulation, nws muaj peev xwm soothe pigment tsub zuj zuj ntawm cov plaub hau follicle o. Qhov no yuav maj mam ua rau txoj kev loj hlob ntawm siab - cov khoom tu plaub hau kawg thiab txhim kho kev siv cov khoom siv raw hauv txhua qhov - hnub tshuaj lom neeg scenarios.
🔭Delivery system optimization thiab cross -domain indication expansion
Ntiaj teb no kev rau optimizeMelanostatine-5tsom rau tsib thaj chaw tseem ceeb: kev txhim kho lub hom phiaj transdermal kev xa khoom, iteration ntawm cov khoom ntsuab -theem synthesis txheej txheem, refinement ntawm multi-active compound formulations, chiral modification of derivatives, thiab transformation rau hauv cov tshuaj tshuaj tshuaj formulations. Cov kev siv zog no tsis tu ncua kov yeej qhov tsis txaus ntawm cov peptides ib txwm muaj, xws li tsis muaj zog transdermal nkag mus thiab tsis zoo formulation stability, yog li nthuav dav daim ntawv thov ciam teb ntawm cov khoom.
Lub nanoliposome thiab cyclodextrin suav nrog kev xa khoom yog tsis tu ncua. Qhov system no siv phospholipid nanocapsules thiab -cyclodextrin kab noj hniav los encapsulate Melanostatine-5, tiv thaiv cov hydrolytic puas rau peptide bonds los ntawm acidic los yog alkaline ib puag ncig nyob rau hauv lub aqueous theem ntawm formulation. Nyob rau tib lub sijhawm, lub peev xwm nkag mus rau epidermal ntawm tus nanocarrier txhim kho lub zos concentration ntawm raw cov ntaub ntawv nyob rau hauv melanocytes, nce melanin inhibition efficiency los ntawm ntau tshaj 30% ntawm tib koob tshuaj. Muaj feem cuam tshuam nrog- cov ntaub ntawv hloov pauv tau maj mam hloov cov khoom siv dawb peptide cov khoom siv, dhau los ua cov kev taw qhia tseem ceeb rau kev hloov kho cov khoom siv tawv nqaij zoo.
Kev ua kom zoo dua qub ntawm cov khoom ntsuab thiab ib puag ncig tus phooj ywg zoo- cov txheej txheem sib xyaw ua ke tau txo cov nqi tsim khoom. Cov khoom siv niaj hnub-theem synthesis siv ntau cov halogenated organic solvents thiab kim tiv thaiv reagents. Ib qho tshiab aqueous-theem enzymatic condensation txheej txheem hloov qee cov tshuaj synthesis cov kauj ruam, ua kom tiav cov kev sib dhos ntawm cov amino acid fragments nyob rau hauv ib chav me me- qhov kub thiab txias. Qhov no txo cov kua emissions pov tseg thiab cov organic reagent poob, thaum tib lub sijhawm nce cov txiaj ntsig ntawm lub hom phiaj nonapeptide. Qhov no pab txhawb kev ua tiav ntawm GMP daim ntawv pov thawj rau cov khoom siv raw khoom hauv European thiab Asmeskas cov tshuaj pleev ib ce, qhib kev xa tawm mus rau txawv teb chaws kev zoo nkauj raw khoom.
Ntau- cov khoom siv sib xyaw ua ke sib xyaw ua ke tau ua kom zoo thiab ua kom zoo dua qub. Ntxiv rau cov pa tranexamic acid thiab vitamin C derivatives, qhov piv ntawm niacinamide thiab cov nroj tsuag polyphenols yog maj mam kho. Kev cia siab rau kev sib txuas ua ke ntawm ob lub melanin- inhibiting mechanism ntawm upstream receptor blocking thiab downstream enzyme kev ua si inhibition, cov txheej txheem shortens lub pigmentation fading voj voog, optimizes lub irritation tswj ntawm pigmentation - lightening formulas tshwj xeeb tshaj yog rau cov tawv nqaij rhiab, thiab enriches xaiv ntawm daim tawv nqaij cov qauv rau ntau hom tawv nqaij.
Chiral qhov chaw hloov kho yog siv los txhim kho tom ntej - tiam MC1R antagonistic peptides. Raws li cov uas twb muaj lawm D-Phe thiab D-Trp chiral nraub qaum, sab- cov saw hlau hloov pauv tau zoo- kho kom zoo dua cov molecular receptor affinity thiab hauv vitro stability. Novel melanin-inhibiting nonapeptide derivatives nrog ntev ib nrab-lub neej thiab qis formulation npaum li cas yog raug tshuaj xyuas. Cov qauv tseem ceeb uas paub tab yog siv los ua kom luv luv txoj kev loj hlob ntawm cov khoom xyaw tshiab whitening active cov khoom xyaw.
Kev hloov pauv ntawm cov tshuaj dermatological formulations yog nce tsis tu ncua. Cov kev hloov kho yog tsim rau cov tshuaj pleev ib ce formulations target post-inflammatory hyperpigmentation thiab superficial melasma. Pharmaceutical- qibMelanostatine-5tau muab tso ua ke nrog cov tshuaj excipients los npaj cov tshuaj dermatological formulations, maj mam txuas los ntawm cov khoom siv tshuaj pleev ib ce mus rau kev kho mob -qib pigmentation-fading raw cov ntaub ntawv, qhib qhov tshiab incremental lag luam chaw nyob rau hauv cov kws tshuaj.
Xaus
Melanostatine-5, nrog rau nws qhov tshwj xeeb nonapeptide molecular txha nraub qaum uas muaj ob lub D-hom chiral amino acids, kev sib tw antagonizes lub -MSH melanocyte- txhawb txoj hauv kev ntawm nws qhov chaw taw qhia los ntawm MC1R. Nws maj mam, tsis yog -cytotoxic melanin-inhibiting zog tau ruaj ntseg nws qhov chaw ntawm sab saum toj siab-peptide whitening cov khoom xyaw, npog ntau yam kev siv xws li cov khoom xyaw ua haujlwm ntawm daim tawv nqaij, cov khoom siv tu plaub hau, biochemical assay reagents, thiab hauv vitro melanin tshuaj ntsuam. Nrog rau kev siv dav dav ntawm cov neeg nqa khoom nanodelivery, kev siv cov txheej txheem ntsuab synthesis, kev txhim kho ntawm ntau- cov qauv tsim, thiab kev hloov pauv mus rau cov tshuaj pleev xim rau cov ntaub ntawv, kev ruaj ntseg thiab daim ntawv thov ntawm Melanostatine -5 cov khoom txuas ntxiv mus. Raws li ib qho tseem ceeb tseem ceeb ntawm peptide muaj nyob rau hauv thaj tsam ntawm qhov chaw mos -fading thiab brightening, nws tsav lub ntiaj teb no whitening active cov khoom xyaw rau lub hom phiaj, tsis tshua muaj kev khaus, thiab ntev-ntev los.
Raws li ib tug ua tus neeg muag khoom ntawmMelanostatine-5, peb nkag siab txog qhov tseem ceeb ntawm cov saw hlau ruaj khov hauv kev sib tw ua lag luam. Peb cov txheej txheem kev tsim khoom thiab cov khoom lag luam tswj xyuas kom cov khoom siv tas mus li txawm tias cov khoom muag sib txawv. Thov mus saib peb cov khoom lag luam nthuav dav thiab sib tham txog koj qhov kev xav tau nrog peb cov kws tshaj lij ntawmallen@faithfulbio.com.
Cov ntaub ntawv
- https://www.specialchem.com/cosmetics/product/lucas-meyer-cosmetic-clariant-melanostatine-5-bg
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- Kadekaro, AL, thiab al. (2007). Txhais MC1R Txoj Cai hauv Tib Neeg Melanocytes los ntawm Nws Agonist -Melanocortin thiab Antagonist HBD3. Pigment Cell & Melanoma Research, 20(6), 611–620.
- Bonetto, S., Carlavan, I., & Baty, D. (2005). Kev rho tawm thiab tus cwj pwm ntawm antagonist thiab agonist peptides rau tib neeg melanocortin 1 receptor. Peptides, 26(8), 1512–1521.
- Dall'Olmo, L., et al. (2023). Alpha-melanocyte stimulating hormone (-MSH): biology, soj ntsuam qhov tseeb thiab cuam tshuam hauv melanoma. Phau ntawv Journal of Translational Medicine, 21(1), 562.