{"id":121810,"date":"2021-07-31T00:53:22","date_gmt":"2021-07-31T07:53:22","guid":{"rendered":"https:\/\/www.pandasilk.com\/tissue-dissolution-tissue-formation-in-silkworm-metamorphosis\/"},"modified":"2025-01-15T10:43:49","modified_gmt":"2025-01-15T18:43:49","slug":"tissue-dissolution-tissue-formation-in-silkworm-metamorphosis","status":"publish","type":"post","link":"https:\/\/www.pandasilk.com\/cs\/tissue-dissolution-tissue-formation-in-silkworm-metamorphosis\/","title":{"rendered":"P\u0159em\u011bna bource: Tk\u00e1\u0148ov\u00e1 remodelace"},"content":{"rendered":"<p>Prom\u011bna bource moru\u0161ov\u00e9ho z larvy p\u0159es kuklu a\u017e po dosp\u011bl\u00e9ho mot\u00fdla je fascinuj\u00edc\u00edm procesem, kter\u00fd zahrnuje dramatickou p\u0159estavbu t\u011blesn\u00fdch tk\u00e1n\u00ed. Tento proces, zn\u00e1m\u00fd jako metamorf\u00f3za, je \u0159\u00edzen komplexn\u00ed souhrou hormon\u016f a zahrnuje jak rozpou\u0161t\u011bn\u00ed st\u00e1vaj\u00edc\u00edch larv\u00e1ln\u00edch tk\u00e1n\u00ed (histol\u00fdza), tak tvorbu nov\u00fdch tk\u00e1n\u00ed pro dosp\u011blce (histogeneze).  Pochopen\u00ed t\u011bchto proces\u016f je kl\u00ed\u010dov\u00e9 nejen pro z\u00e1kladn\u00ed biologick\u00fd v\u00fdzkum, ale i pro potenci\u00e1ln\u00ed aplikace v biomedic\u00edn\u011b a materi\u00e1lov\u00e9m in\u017een\u00fdrstv\u00ed.<\/p>\n<h3>Histol\u00fdza: Rozpou\u0161t\u011bn\u00ed larv\u00e1ln\u00edch tk\u00e1n\u00ed<\/h3>\n<p>B\u011bhem metamorf\u00f3zy se larv\u00e1ln\u00ed tk\u00e1n\u011b, jako jsou svaly, st\u0159evo a slinn\u00e9 \u017el\u00e1zy, rozpou\u0161t\u011bj\u00ed.  Tento proces je zprost\u0159edkov\u00e1n enzymy, kter\u00e9 \u0161t\u011bp\u00ed proteiny a dal\u0161\u00ed makromolekuly.  D\u016fle\u017eitou roli v histol\u00fdze hraj\u00ed hemocyty, specializovan\u00e9 bu\u0148ky imunitn\u00edho syst\u00e9mu hmyzu.<\/p>\n<h3>Role hormon\u016f v metamorf\u00f3ze<\/h3>\n<p>Metamorf\u00f3za bource moru\u0161ov\u00e9ho je \u0159\u00edzena dv\u011bma hlavn\u00edmi hormony: juveniln\u00edm hormonem (JH) a ekdysonem. JH udr\u017euje larv\u00e1ln\u00ed stadium, zat\u00edmco ekdyson spou\u0161t\u00ed proces metamorf\u00f3zy.  Pokles hladiny JH a n\u00e1r\u016fst hladiny ekdysonu signalizuj\u00ed zah\u00e1jen\u00ed histol\u00fdzy a histogeneze.<\/p>\n<h3>Histogeneze: Tvorba tk\u00e1n\u00ed dosp\u011blce<\/h3>\n<p>Sou\u010dasn\u011b s rozpou\u0161t\u011bn\u00edm larv\u00e1ln\u00edch tk\u00e1n\u00ed prob\u00edh\u00e1 tvorba nov\u00fdch tk\u00e1n\u00ed pro dosp\u011blce, jako jsou k\u0159\u00eddla, nohy a pohlavn\u00ed org\u00e1ny.  Tyto tk\u00e1n\u011b se vyv\u00edjej\u00ed z imagin\u00e1ln\u00edch disk\u016f, skupin nediferencovan\u00fdch bun\u011bk, kter\u00e9 jsou p\u0159\u00edtomny ji\u017e v larv\u00e1ln\u00edm stadiu.<\/p>\n<h3>Imagin\u00e1ln\u00ed disky a jejich v\u00fdvoj<\/h3>\n<p>Imagin\u00e1ln\u00ed disky jsou z\u00e1kladem pro v\u00fdvoj dosp\u011bl\u00fdch struktur.  B\u011bhem metamorf\u00f3zy se bu\u0148ky v imagin\u00e1ln\u00edch disc\u00edch za\u010d\u00ednaj\u00ed d\u011blit a diferencovat, \u010d\u00edm\u017e vznikaj\u00ed specifick\u00e9 tk\u00e1n\u011b a org\u00e1ny dosp\u011blce.<\/p>\n<h3>Tabulka porovn\u00e1n\u00ed histol\u00fdzy a histogeneze<\/h3>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Proces<\/th>\n<th>Tk\u00e1n\u011b<\/th>\n<th>Mechanismus<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Histol\u00fdza<\/td>\n<td>Larv\u00e1ln\u00ed<\/td>\n<td>Enzymatick\u00e9 \u0161t\u011bpen\u00ed<\/td>\n<\/tr>\n<tr>\n<td>Histogeneze<\/td>\n<td>Dosp\u011bl\u00e9<\/td>\n<td>Bun\u011b\u010dn\u00e9 d\u011blen\u00ed a diferenciace<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Vliv metamorf\u00f3zy na produkci hedv\u00e1b\u00ed<\/h3>\n<p>Metamorf\u00f3za m\u00e1 z\u00e1sadn\u00ed vliv na produkci hedv\u00e1b\u00ed. Bource moru\u0161ov\u00e9ho chov\u00e1me pro jeho schopnost vytv\u00e1\u0159et hedv\u00e1bn\u00e9 vl\u00e1kno, kter\u00e9 se pou\u017e\u00edv\u00e1 k v\u00fdrob\u011b textili\u00ed.  Proces tvorby hedv\u00e1b\u00ed prob\u00edh\u00e1 v slinn\u00fdch \u017el\u00e1z\u00e1ch larvy.  B\u011bhem metamorf\u00f3zy se v\u0161ak slinn\u00e9 \u017el\u00e1zy rozpou\u0161t\u011bj\u00ed, co\u017e ukon\u010duje produkci hedv\u00e1b\u00ed.<\/p>\n<p>Metamorf\u00f3za bource moru\u0161ov\u00e9ho je komplexn\u00ed a fascinuj\u00edc\u00ed proces, kter\u00fd zahrnuje precizn\u011b koordinovanou destrukci a rekonstrukci tk\u00e1n\u00ed.  Hlub\u0161\u00ed pochopen\u00ed molekul\u00e1rn\u00edch mechanism\u016f, kter\u00e9 \u0159\u00edd\u00ed tento proces, m\u016f\u017ee v\u00e9st k nov\u00fdm poznatk\u016fm v oblasti v\u00fdvojov\u00e9 biologie a regenerativn\u00ed medic\u00edny.  Studium metamorf\u00f3zy hmyzu, jako je bourec moru\u0161ov\u00fd, n\u00e1m m\u016f\u017ee pomoci l\u00e9pe porozum\u011bt proces\u016fm regenerace tk\u00e1n\u00ed a potenci\u00e1ln\u011b i v\u00fdvoji nov\u00fdch terapeutick\u00fdch strategi\u00ed.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Prom\u011bna bource moru\u0161ov\u00e9ho z larvy p\u0159es kuklu a\u017e po dosp\u011bl\u00e9ho mot\u00fdla je fascinuj\u00edc\u00edm procesem, kter\u00fd zahrnuje dramatickou p\u0159estavbu t\u011blesn\u00fdch tk\u00e1n\u00ed. Tento proces, zn\u00e1m\u00fd jako metamorf\u00f3za, je \u0159\u00edzen komplexn\u00ed souhrou hormon\u016f a zahrnuje jak rozpou\u0161t\u011bn\u00ed st\u00e1vaj\u00edc\u00edch larv\u00e1ln\u00edch tk\u00e1n\u00ed (histol\u00fdza), tak tvorbu nov\u00fdch tk\u00e1n\u00ed pro dosp\u011blce (histogeneze). Pochopen\u00ed t\u011bchto proces\u016f je kl\u00ed\u010dov\u00e9 nejen pro z\u00e1kladn\u00ed biologick\u00fd v\u00fdzkum,<\/p>\n","protected":false},"author":1,"featured_media":9494,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[37831],"tags":[],"class_list":["post-121810","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sericulture-cs","prodpage-classic"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.pandasilk.com\/cs\/wp-json\/wp\/v2\/posts\/121810","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pandasilk.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pandasilk.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pandasilk.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pandasilk.com\/cs\/wp-json\/wp\/v2\/comments?post=121810"}],"version-history":[{"count":0,"href":"https:\/\/www.pandasilk.com\/cs\/wp-json\/wp\/v2\/posts\/121810\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.pandasilk.com\/cs\/wp-json\/wp\/v2\/media\/9494"}],"wp:attachment":[{"href":"https:\/\/www.pandasilk.com\/cs\/wp-json\/wp\/v2\/media?parent=121810"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pandasilk.com\/cs\/wp-json\/wp\/v2\/categories?post=121810"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pandasilk.com\/cs\/wp-json\/wp\/v2\/tags?post=121810"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}