{"id":8151,"date":"2024-08-11T19:42:17","date_gmt":"2024-08-11T19:42:17","guid":{"rendered":"https:\/\/longchangextracts.com\/?p=8151"},"modified":"2024-08-11T19:42:17","modified_gmt":"2024-08-11T19:42:17","slug":"lop-nur-salt-lake","status":"publish","type":"post","link":"https:\/\/longchangextracts.com\/hu\/lop-nur-salt-lake\/","title":{"rendered":"Egy Streptomyces t\u00f6rzs azonos\u00edt\u00e1sa a Lop Nur s\u00f3s t\u00f3b\u00f3l \u00e9s metabolitjainak g\u00e1tl\u00f3 hat\u00e1sa a tirozin\u00e1z aktivit\u00e1sra \u00e9s a melanin termel\u00e9sre"},"content":{"rendered":"<p>Egy Streptomyces t\u00f6rzs azonos\u00edt\u00e1sa a Lop Nur s\u00f3s t\u00f3b\u00f3l \u00e9s metabolitjainak g\u00e1tl\u00f3 hat\u00e1sa a tirozin\u00e1z aktivit\u00e1sra \u00e9s a melanin termel\u00e9sre. A tirozin\u00e1z (EC1.14.18.1, tirozin\u00e1z), m\u00e1s n\u00e9ven polifenol-oxid\u00e1z, a melanin bioszint\u00e9zis\u00e9nek kulcsenzime az \u00e1llatokban, n\u00f6v\u00e9nyekben \u00e9s mikroorganizmusokban. Kifejez\u0151d\u00e9si aktivit\u00e1sa hat\u00e1rozza meg a melanintermel\u00e9s sebess\u00e9g\u00e9t \u00e9s mennyis\u00e9g\u00e9t. A tirozin\u00e1z-g\u00e1tl\u00f3knak nagy alkalmaz\u00e1si lehet\u0151s\u00e9gei vannak a kozmetikumokban, a gy\u00fcm\u00f6lcs\u00f6k \u00e9s z\u00f6lds\u00e9gek tart\u00f3s\u00edt\u00e1s\u00e1ban, a biopeszticidekben \u00e9s a melanin-anyagcsere-betegs\u00e9gek kezel\u00e9s\u00e9ben. Jelenleg a tirozin\u00e1z inhibitorokat f\u0151k\u00e9nt term\u00e9szetes term\u00e9kkivon\u00e1ssal vagy k\u00e9miai szint\u00e9zissel nyerik. A sz\u00e9ls\u0151s\u00e9ges k\u00f6rnyezeti mikroorganizmusok speci\u00e1lis g\u00e9nt\u00edpusokat \u00e9s fiziol\u00f3giai mechanizmusokat alak\u00edtottak ki olyan k\u00f6rnyezetben, ahol m\u00e1s szervezetek nem k\u00e9pesek t\u00fal\u00e9lni, mint p\u00e9ld\u00e1ul az er\u0151s savak, er\u0151s b\u00e1zisok \u00e9s er\u0151s sug\u00e1rz\u00e1s. Struktur\u00e1lisan \u00fajszer\u0171 \u00e9s biol\u00f3giailag akt\u00edv m\u00e1sodlagos anyagcsereterm\u00e9keket k\u00e9pesek el\u0151\u00e1ll\u00edtani, ami \u00faj \u00f6tleteket ny\u00fajt a tirozin\u00e1z inhibitorok sz\u0171r\u00e9s\u00e9hez. A cikk kutat\u00e1si t\u00e1rgya a Streptomyces 89-2-2 t\u00f6rzse, amelyet K\u00edna m\u00e1sodik legnagyobb s\u00f3s viz\u0171 tav\u00e1b\u00f3l, a hszincsiangi Lop Nurb\u00f3l izol\u00e1ltak. A Streptomyces setonii t\u00f6rzsek\u00e9nt azonos\u00edtott\u00e1k. A Streptomyces sp. Z-L-22 erjeszt\u00e9s\u00e9vel antibakteri\u00e1lis hat\u00f3anyagok \u00e1ll\u00edthat\u00f3k el\u0151. Felfedezt\u00e9k, hogy a Streptomyces coelicolor bakt\u00e9riumsejtjei \u00e9s az \u00e1ltaluk termelt foszfodi\u00e9szter\u00e1zok k\u00e9pesek lebontani a szerves foszf\u00e1t rovar\u00f6l\u0151 szereket. Jelenleg nincsenek jelent\u00e9sek a tirozin\u00e1z inhibitorok \u00e9s a melaninszint\u00e9zist g\u00e1tl\u00f3 anyagok Streptomyces coelicolor \u00e1ltal t\u00f6rt\u00e9n\u0151 termel\u00e9s\u00e9r\u0151l. Ez a k\u00eds\u00e9rlet a Streptomyces setonii 89-2-2 metabolitjainak g\u00e1tl\u00f3 hat\u00e1s\u00e1t vizsg\u00e1lja a tirozin\u00e1z aktivit\u00e1sra \u00e9s a melaninszint\u00e9zisre, annak \u00e9rdek\u00e9ben, hogy tov\u00e1bb vizsg\u00e1lja a mikroorganizmusok egyed\u00fcl\u00e1ll\u00f3 biol\u00f3giai aktivit\u00e1si potenci\u00e1lj\u00e1t sz\u00e9ls\u0151s\u00e9ges k\u00f6rnyezetben, \u00e9s megalapozza a s\u00fcrg\u0151sen sz\u00fcks\u00e9ges term\u00e9szetes melaninszint\u00e9zis-g\u00e1tl\u00f3k \u00e9s vezet\u0151 vegy\u00fcleteik kifejleszt\u00e9s\u00e9t az orvostudom\u00e1ny, a kozmetika stb. ter\u00fclet\u00e9n.<\/p>\n<p>&nbsp;<\/p>\n<p>A 89-2-2 t\u00f6rzs optim\u00e1lis s\u00f3koncentr\u00e1ci\u00f3ja 5%, \u00e9s a m\u00e9rs\u00e9kelten halofil Streptomyces t\u00f6rzshez tartozik. A morfol\u00f3giai jellemz\u0151k, teny\u00e9szt\u00e9si jellemz\u0151k, fiziol\u00f3giai \u00e9s biok\u00e9miai tulajdons\u00e1gok, a sejtfal k\u00e9miai \u00f6sszet\u00e9tele \u00e9s a 16SrRNS g\u00e9nszekvencia-elemz\u00e9s alapj\u00e1n a 89-2-2 t\u00f6rzset el\u0151zetesen Streptomyces setonii-k\u00e9nt azonos\u00edtott\u00e1k. A Streptomyces setonii 89-2-2-2 metabolit kivonat\u00e1nak IC50-es \u00e9rt\u00e9ke a gomba tirozin\u00e1z-difenol\u00e1z in vitro aktivit\u00e1s\u00e1ra 0,478 mg\/ml volt. A 100-1000 \u03bc g\/mL koncentr\u00e1ci\u00f3tartom\u00e1nyban a 89-2-2 t\u00f6rzs kivonata nem volt jelent\u0151s hat\u00e1ssal az eg\u00e9r melanoma B16 sejtek prolifer\u00e1ci\u00f3j\u00e1ra, de jelent\u0151sen g\u00e1tolni tudta az intracellul\u00e1ris tirozin\u00e1z aktivit\u00e1st \u00e9s hat\u00e9konyan cs\u00f6kkentette az intracellul\u00e1ris melanin tartalmat. 48 \u00f3r\u00e1s 1000 \u03bc g\/mL kivonattal t\u00f6rt\u00e9n\u0151 kezel\u00e9s ut\u00e1n a B16 sejtek 48% cs\u00f6kken\u00e9st mutattak az intracellul\u00e1ris tirozin\u00e1z aktivit\u00e1sban \u00e9s 31% cs\u00f6kken\u00e9st a melanin tartalomban. A metabolizmus kimutat\u00e1si eredm\u00e9nyei azt mutatj\u00e1k, hogy S A Setonii 89-2-2 ferment\u00e1ci\u00f3s k\u00f6r\u00fclm\u00e9nyeinek optimaliz\u00e1l\u00e1sa el\u0151tt \u00e9s ut\u00e1n keletkez\u0151 differenci\u00e1lt metabolitok f\u0151k\u00e9nt vitaminvegy\u00fcletek, arom\u00e1s vegy\u00fcletek \u00e9s karbonsavvegy\u00fcletek. Kor\u00e1bbi jelent\u00e9sek kimutatt\u00e1k, hogy mindh\u00e1rom anyagt\u00edpus k\u00e9pes g\u00e1tolni a tirozin\u00e1z aktivit\u00e1st. L\u00e1that\u00f3, hogy a S. setonii 89-2-2 \u00edg\u00e9retes anyag, amely fejleszt\u00e9si potenci\u00e1llal rendelkezik a tirozin\u00e1z inhibitorok \u00e9s a melaninszint\u00e9zis inhibitorok el\u0151\u00e1ll\u00edt\u00e1s\u00e1ra.<\/p>","protected":false},"excerpt":{"rendered":"<p>Identification of a strain of Streptomyces from Lop Nur Salt Lake and the inhibitory effect of its metabolites on tyrosinase activity and melanin production. Tyrosinase (EC1.14.18.1, tyrosinase), also known as polyphenol oxidase, is a key enzyme in the biosynthesis of melanin in animals, plants, and microorganisms. Its expression activity determines the rate and quantity of [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Identification of a strain of Streptomyces from Lop Nur Salt Lake and the inhibitory effects of its metabolites on tyrosinase activity and melanin production - China Chemical Manufacturer<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/longchangextracts.com\/hu\/lop-nur-salt-lake\/\" \/>\n<meta property=\"og:locale\" content=\"hu_HU\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Identification of a strain of Streptomyces from Lop Nur Salt Lake and the inhibitory effects of its metabolites on tyrosinase activity and melanin production - China Chemical Manufacturer\" \/>\n<meta property=\"og:description\" content=\"Identification of a strain of Streptomyces from Lop Nur Salt Lake and the inhibitory effect of its metabolites on tyrosinase activity and melanin production. Tyrosinase (EC1.14.18.1, tyrosinase), also known as polyphenol oxidase, is a key enzyme in the biosynthesis of melanin in animals, plants, and microorganisms. 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