{"id":20744,"date":"2026-03-06T11:13:49","date_gmt":"2026-03-06T14:13:49","guid":{"rendered":"https:\/\/biologo.com.br\/bio\/?p=20744"},"modified":"2026-03-27T15:11:57","modified_gmt":"2026-03-27T18:11:57","slug":"tatiana-sampaio-e-a-laminina","status":"publish","type":"post","link":"https:\/\/biologo.com.br\/bio\/tatiana-sampaio-e-a-laminina\/","title":{"rendered":"Tatiana Sampaio e a laminina"},"content":{"rendered":"\n<p><span style=\"color: #000000; font-size: 14pt;\"><span style=\"\"><strong style=\"color: rgb(51, 102, 255); font-size: 14pt; font-weight: bold;\">Tatiana Sampaio e a laminina<\/strong><font color=\"#000000\"><span style=\"font-size: 14pt;\">:<\/span><\/font><\/span> <span style=\"color: #000000; font-size: 14pt;\">a biologia brasileira desponta dando <span style=\"color: #000000; font-size: 14pt;\"><span style=\"color: #000000; font-size: 14pt;\">sobretudo<\/span><\/span> um novo horizonte para a recupera\u00e7\u00e3o motora.<\/span><\/span><\/p>\n\n\n\n<figure class=\"wp-block-image alignright size-full\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"74\" height=\"83\" data-attachment-id=\"18164\" data-permalink=\"https:\/\/biologo.com.br\/bio\/sylvia-earle-na-luta-pelos-oceanos\/original-biologo-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2025\/05\/original-biologo-2.jpg?fit=74%2C83&amp;ssl=1\" data-orig-size=\"74,83\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"original-biologo (2)\" data-image-description=\"&lt;p&gt;artigo original www.biologo.com.br \u00a9 todos os direitos reservados&lt;\/p&gt;\n\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2025\/05\/original-biologo-2.jpg?fit=74%2C83&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2025\/05\/original-biologo-2.jpg?resize=74%2C83&#038;ssl=1\" alt=\"Artigo original www.biologo.com.br \u00a9 todos os direitos reservados\" class=\"wp-image-18164\"\/><\/figure>\n\n\n\n<h1 class=\"wp-block-heading\"><span style=\"font-family: 'courier new', courier, monospace; font-size: 24pt; color: #000000;\"><strong><span style=\"font-size: 24pt; font-family: 'courier new', courier, monospace; color: #000000;\"><strong>Tatiana Sampaio <\/strong><\/span><\/strong><\/span><span style=\"font-family: 'courier new', courier, monospace; color: #000000; font-size: 24pt;\"><strong><strong><strong><strong><span style=\"font-family: 'courier new', courier, monospace; color: #000000; font-size: 24pt;\"><strong><strong><strong><strong><strong><strong><span style=\"font-family: 'courier new', courier, monospace; color: #000000; font-size: 24pt;\"><strong><strong><strong><strong><span style=\"font-family: 'courier new', courier, monospace; color: #000000; font-size: 24pt;\"><strong><strong><strong><strong><span style=\"font-family: 'courier new', courier, monospace; color: #000000; font-size: 24pt;\"><strong><strong><strong><strong><span style=\"font-family: 'courier new', courier, monospace; color: #000000; font-size: 24pt;\"><strong><span style=\"font-family: 'courier new', courier, monospace; color: #000000;\"><strong><span style=\"font-size: 24pt;\"><span style=\"font-size: 12pt;\"><strong><strong><strong><strong>e a laminina: em busca da recupera\u00e7\u00e3o de movimentos<\/strong><\/strong><\/strong><\/strong><\/span><\/span><\/strong><\/span><\/strong><\/span><\/strong><\/strong><\/strong><\/strong><\/span><\/strong><\/strong><\/strong><\/strong><\/span><\/strong><\/strong><\/strong><\/strong><\/span><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/span><\/strong><\/strong><\/strong><\/strong><\/span><\/h1>\n\n\n\n<p><span style=\"font-size: 8pt; color: #000000;\"><span style=\"font-size: 8pt; color: #000000;\"><strong>6\/3\/2027<\/strong> ::&nbsp; <strong>Marco Pozzana<\/strong>, bi\u00f3logo<\/span><\/span><\/p>\n\n\n\n<p class=\"has-drop-cap has-black-color has-text-color has-link-color has-medium-font-size wp-elements-42fb673e8a5324420cebdc8185cdbcfb\"><span><span style=\"font-weight: bold; font-family: &quot;courier new&quot;, courier, monospace; font-size: 14pt;\">D<\/span><\/span>urante d\u00e9cadas, acreditou-se que les\u00f5es no sistema nervoso central eram irrevers\u00edveis. Entretanto, pesquisas recentes desafiam essa vis\u00e3o. Assim, a regenera\u00e7\u00e3o neural deixou de ser utopia e passou a ser hip\u00f3tese experimental robusta.<\/p>\n\n\n\n<p class=\"has-cm-color-6-color has-text-color has-link-color has-medium-font-size wp-elements-790004e4a27928d5074daae8588f682d\">A matriz extracelular n\u00e3o \u00e9 mero suporte estrutural. Pelo contr\u00e1rio, ela regula sinais bioqu\u00edmicos complexos. Entre seus componentes, a laminina desempenha papel decisivo. Ela cria trilhas moleculares para ax\u00f4nios em regenera\u00e7\u00e3o. Quando ocorre uma les\u00e3o medular, o ambiente celular torna-se hostil. Forma-se tecido cicatricial. Al\u00e9m disso, mol\u00e9culas inibit\u00f3rias bloqueiam o crescimento axonal. Consequentemente, o movimento se perde.<\/p>\n\n\n\n<figure class=\"wp-block-image alignright size-full\"><a href=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2026\/03\/Tatiana-Sampaio-e-a-laminina_-a-chave-da-recuperacao-de-movimentos.jpg?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"82\" height=\"121\" data-attachment-id=\"20747\" data-permalink=\"https:\/\/biologo.com.br\/bio\/tatiana-sampaio-e-a-laminina\/tatiana-sampaio-e-a-laminina_-a-chave-da-recuperacao-de-movimentos\/\" data-orig-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2026\/03\/Tatiana-Sampaio-e-a-laminina_-a-chave-da-recuperacao-de-movimentos.jpg?fit=82%2C121&amp;ssl=1\" data-orig-size=\"82,121\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Tatiana Sampaio e a laminina_ a chave da recupera\u00e7\u00e3o de movimentos\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2026\/03\/Tatiana-Sampaio-e-a-laminina_-a-chave-da-recuperacao-de-movimentos.jpg?fit=82%2C121&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2026\/03\/Tatiana-Sampaio-e-a-laminina_-a-chave-da-recuperacao-de-movimentos.jpg?resize=82%2C121&#038;ssl=1\" alt=\"Tatiana Sampaio e a laminina: a chave da recupera\u00e7\u00e3o de movimentos\" class=\"wp-image-20747\"\/><\/a><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-medium-font-size\"><a href=\"https:\/\/biologo.com.br\/bio\/grandes-biologos-brasileiros-da-atualidade\/\">Grandes bi\u00f3logos brasileiros da atualidade<\/a><\/li>\n\n\n\n<li class=\"has-medium-font-size\"><a href=\"https:\/\/biologo.com.br\/bio\/maravilhas-da-biologia\/\" type=\"post\" id=\"16597\">Maravilhas da biologia<\/a><\/li>\n\n\n\n<li class=\"has-medium-font-size\"><a href=\"https:\/\/biologo.com.br\/bio\/biologia-da-esperanca\/\">Biologia da Esperan\u00e7a<\/a><\/li>\n\n\n\n<li class=\"has-medium-font-size\"><a href=\"https:\/\/biologo.com.br\/bio\/biologia-celular-desvendando-os-mecanismos-que-sustentam-a-vida\/\">Biologia Celular: desvendando os mecanismos que sustentam a vida<\/a><\/li>\n<\/ul>\n\n\n\n<p class=\"has-cm-color-6-color has-text-color has-link-color has-medium-font-size wp-elements-30bd2682be087fe4841b5a59c6f87c4f\">Todavia, a presen\u00e7a de laminina modifica esse cen\u00e1rio. Ela estimula ades\u00e3o celular. Ao mesmo tempo, ativa integrinas espec\u00edficas. Desse modo, desencadeia cascatas intracelulares regenerativas. Estudos cl\u00e1ssicos j\u00e1 demonstravam sua import\u00e2ncia no desenvolvimento embrion\u00e1rio (Timpl et al., 1979). Posteriormente, pesquisas ampliaram essa compreens\u00e3o (Colognato &amp; Yurchenco, 2000). Assim, consolidou-se a ideia de que a laminina orienta crescimento neural e estabiliza sinapses.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large has-custom-border\"><a href=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2026\/03\/Tatiana-Sampaio-e-a-laminina-em-busca-da-recuperacao-de-movimentos.jpg?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"450\" data-attachment-id=\"20745\" data-permalink=\"https:\/\/biologo.com.br\/bio\/tatiana-sampaio-e-a-laminina\/tatiana-sampaio-e-a-laminina-em-busca-da-recuperacao-de-movimentos\/\" data-orig-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2026\/03\/Tatiana-Sampaio-e-a-laminina-em-busca-da-recuperacao-de-movimentos.jpg?fit=1200%2C675&amp;ssl=1\" data-orig-size=\"1200,675\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Tatiana Sampaio e a laminina em busca da recupera\u00e7\u00e3o de movimentos\" data-image-description=\"&lt;p&gt;Tatiana Sampaio e a laminina: em busca da recupera\u00e7\u00e3o de movimentos. A pesquisadora brasileira Tatiana Coelho de Sampaio lidera um dos avan\u00e7os mais promissores da medicina nacional nas \u00faltimas d\u00e9cadas. Ap\u00f3s quase 30 anos dedicados \u00e0 pesquisa b\u00e1sica e aplicada, ela coordenou o desenvolvimento da polilaminina, subst\u00e2ncia capaz de estimular a reconex\u00e3o de neur\u00f4nios lesionados na medula espinhal. Em seus estudos, a cientista tamb\u00e9m destaca a laminina \u2014 prote\u00edna essencial da matriz extracelular \u2014 que apresenta uma estrutura molecular singular em formato de cruz.&lt;\/p&gt;\n&lt;p&gt;Essa prote\u00edna funciona como uma esp\u00e9cie de \u201ccola biol\u00f3gica\u201d, respons\u00e1vel por manter as c\u00e9lulas unidas e organizadas, garantindo sustenta\u00e7\u00e3o, estabilidade e o adequado funcionamento dos tecidos do corpo humano.&lt;\/p&gt;\n&lt;p&gt;O formato peculiar da mol\u00e9cula tem despertado reflex\u00f5es tanto na comunidade cient\u00edfica quanto entre pessoas de f\u00e9, que enxergam na arquitetura microsc\u00f3pica da vida uma simbologia significativa relacionada \u00e0 sustenta\u00e7\u00e3o do pr\u00f3prio corpo.&lt;\/p&gt;\n&lt;p&gt;A explica\u00e7\u00e3o detalhada da especialista evidencia como a complexidade biol\u00f3gica se revela de maneira impressionante at\u00e9 mesmo nos n\u00edveis microsc\u00f3picos do organismo humano, refor\u00e7ando o impacto que a ci\u00eancia pode gerar ao explorar os fundamentos da vida e abrir caminhos para novas possibilidades terap\u00eauticas.&lt;\/p&gt;\n\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2026\/03\/Tatiana-Sampaio-e-a-laminina-em-busca-da-recuperacao-de-movimentos.jpg?fit=800%2C450&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2026\/03\/Tatiana-Sampaio-e-a-laminina-em-busca-da-recuperacao-de-movimentos.jpg?resize=800%2C450&#038;ssl=1\" alt=\"Tatiana Sampaio e a laminina: em busca da recupera\u00e7\u00e3o de movimentos\" class=\"wp-image-20745\" style=\"border-top-left-radius:100px;border-top-right-radius:100px;border-bottom-left-radius:100px;border-bottom-right-radius:100px\" srcset=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2026\/03\/Tatiana-Sampaio-e-a-laminina-em-busca-da-recuperacao-de-movimentos.jpg?resize=1024%2C576&amp;ssl=1 1024w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2026\/03\/Tatiana-Sampaio-e-a-laminina-em-busca-da-recuperacao-de-movimentos.jpg?resize=300%2C169&amp;ssl=1 300w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2026\/03\/Tatiana-Sampaio-e-a-laminina-em-busca-da-recuperacao-de-movimentos.jpg?resize=768%2C432&amp;ssl=1 768w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2026\/03\/Tatiana-Sampaio-e-a-laminina-em-busca-da-recuperacao-de-movimentos.jpg?resize=150%2C84&amp;ssl=1 150w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2026\/03\/Tatiana-Sampaio-e-a-laminina-em-busca-da-recuperacao-de-movimentos.jpg?w=1200&amp;ssl=1 1200w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>Polilaminina:<\/strong>&nbsp;a subst\u00e2ncia \u00e9 uma vers\u00e3o sintetizada da laminina (presente na placenta humana) que atua como um &#8220;andaime&#8221; para o crescimento de novos ax\u00f4nios, permitindo que neur\u00f4nios voltem a se conectar ap\u00f3s les\u00f5es graves<\/figcaption><\/figure>\n\n\n\n<!--more-->\n\n\n\n<h2 class=\"wp-block-heading\"><span><strong style=\"color: rgb(0, 0, 0); font-family: &quot;courier new&quot;, courier, monospace; font-size: 14pt; font-weight: bold;\">A laminina e a arquitetura invis\u00edvel do movimento <\/strong><\/span><\/h2>\n\n\n\n<p class=\"has-cm-color-6-color has-text-color has-link-color has-medium-font-size wp-elements-2a933e5beb4ec24a9a26651ebad1509a\">Em modelos experimentais de les\u00e3o medular, a aplica\u00e7\u00e3o de laminina promoveu crescimento axonal. Al\u00e9m disso, favoreceu reconex\u00e3o funciona. Consequentemente, observou-se melhora motora significativa. Embora parcial, essa melhora foi consistente e mensur\u00e1vel. A prote\u00edna atua por meio de receptores como integrinas e distroglicanas. Esses receptores transmitem sinais ao citoesqueleto. Portanto, reorganizam microt\u00fabulos e, assim, permitem avan\u00e7o do cone de crescimento.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><a href=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2026\/03\/laminina.jpg?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"469\" height=\"664\" data-attachment-id=\"20780\" data-permalink=\"https:\/\/biologo.com.br\/bio\/tatiana-sampaio-e-a-laminina\/laminina\/\" data-orig-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2026\/03\/laminina.jpg?fit=469%2C664&amp;ssl=1\" data-orig-size=\"469,664\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"laminina\" data-image-description=\"&lt;p&gt;laminina. laminina \u00e9 uma glicoprote\u00edna essencial da matriz extracelular. Ela organiza tecidos e orienta c\u00e9lulas. Em especial, guia neur\u00f4nios em crescimento.&lt;\/p&gt;\n\" data-image-caption=\"&lt;p&gt;laminina \u00e9 uma glicoprote\u00edna essencial da matriz extracelular. Ela organiza tecidos e orienta c\u00e9lulas. Em especial, guia neur\u00f4nios em crescimento.&lt;\/p&gt;\n\" data-large-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2026\/03\/laminina.jpg?fit=469%2C664&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2026\/03\/laminina.jpg?resize=469%2C664&#038;ssl=1\" alt=\"\" class=\"wp-image-20780\" style=\"aspect-ratio:0.7063350120016944;width:424px;height:auto\" srcset=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2026\/03\/laminina.jpg?w=469&amp;ssl=1 469w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2026\/03\/laminina.jpg?resize=212%2C300&amp;ssl=1 212w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2026\/03\/laminina.jpg?resize=150%2C212&amp;ssl=1 150w\" sizes=\"auto, (max-width: 469px) 100vw, 469px\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>Laminina \u00e9 uma glicoprote\u00edna essencial da matriz extracelular. Ela organiza tecidos e orienta c\u00e9lulas. Em especial, guia neur\u00f4nios em crescimento.<\/strong><\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image alignright size-full\"><a href=\"https:\/\/biologo.com.br\/bio\/biofisica\/\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"82\" height=\"121\" data-attachment-id=\"19633\" data-permalink=\"https:\/\/biologo.com.br\/bio\/biofisica\/arvore-milenar-1\/\" data-orig-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2015\/10\/arvore-milenar-1.jpg?fit=82%2C121&amp;ssl=1\" data-orig-size=\"82,121\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"arvore-milenar (1)\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2015\/10\/arvore-milenar-1.jpg?fit=82%2C121&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2015\/10\/arvore-milenar-1.jpg?resize=82%2C121&#038;ssl=1\" alt=\"Biof\u00edsica e o futuro da ci\u00eancia da vida\" class=\"wp-image-19633\"\/><\/a><\/figure>\n\n\n\n<p class=\"has-cm-color-6-color has-text-color has-link-color has-medium-font-size wp-elements-4942b702d21948c4fd90066ac39b60f0\">Ademais, a laminina influencia plasticidade sin\u00e1ptica. Ela estabiliza contatos neuronais rec\u00e9m-formados. Por isso, n\u00e3o apenas estimula crescimento, mas tamb\u00e9m consolida conex\u00f5es. Outro aspecto crucial envolve c\u00e9lulas-tronco neurais. Em ambientes ricos em laminina, essas c\u00e9lulas proliferam mais. Al\u00e9m disso, diferenciam-se em neur\u00f4nios funcionais, contribuindo tanto para crescimento axonal quanto para reposi\u00e7\u00e3o celular.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span><strong style=\"color: rgb(0, 0, 0); font-family: &quot;courier new&quot;, courier, monospace; font-size: 14pt; font-weight: bold;\">Tatiana Sampaio e a interface entre pesquisa e esperan\u00e7a<\/strong><\/span> <\/h3>\n\n\n\n<p class=\"has-cm-color-6-color has-text-color has-link-color has-medium-font-size wp-elements-4143d9c2c2ce0a8f2a8eb1ac46624ce8\">A ci\u00eancia brasileira participa desse debate global. E, nesse cen\u00e1rio, destaca-se a atua\u00e7\u00e3o de Tatiana Coelho de Sampaio. Sua trajet\u00f3ria conecta pesquisa b\u00e1sica e aplica\u00e7\u00e3o cl\u00ednica. Al\u00e9m disso, evidencia o valor da investiga\u00e7\u00e3o persistente.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2026\/03\/tatiana-sampaio-aquarela-laminina.jpg?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"450\" data-attachment-id=\"20748\" data-permalink=\"https:\/\/biologo.com.br\/bio\/tatiana-sampaio-e-a-laminina\/tatiana-sampaio-aquarela-laminina\/\" data-orig-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2026\/03\/tatiana-sampaio-aquarela-laminina.jpg?fit=1200%2C675&amp;ssl=1\" data-orig-size=\"1200,675\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"tatiana-sampaio-aquarela-laminina\" data-image-description=\"&lt;p&gt;Tatiana Sampaio e a laminina. A ci\u00eancia brasileira participa desse debate global. E, nesse cen\u00e1rio, destaca-se a atua\u00e7\u00e3o de Tatiana Sampaio. Sua trajet\u00f3ria conecta pesquisa b\u00e1sica e aplica\u00e7\u00e3o cl\u00ednica. Al\u00e9m disso, evidencia o valor da investiga\u00e7\u00e3o persistente.&lt;\/p&gt;\n&lt;p&gt;Ao investigar os mecanismos da matriz extracelular, ela enfatiza a import\u00e2ncia do microambiente neural. N\u00e3o basta estimular neur\u00f4nios isoladamente. \u00c9 preciso recriar o contexto adequado. E a laminina ocupa posi\u00e7\u00e3o central nesse contexto. Assim, a compreens\u00e3o molecular transforma-se em estrat\u00e9gia terap\u00eautica.&lt;\/p&gt;\n\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2026\/03\/tatiana-sampaio-aquarela-laminina.jpg?fit=800%2C450&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2026\/03\/tatiana-sampaio-aquarela-laminina.jpg?resize=800%2C450&#038;ssl=1\" alt=\"Tatiana Sampaio e a laminina\" class=\"wp-image-20748\" srcset=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2026\/03\/tatiana-sampaio-aquarela-laminina.jpg?resize=1024%2C576&amp;ssl=1 1024w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2026\/03\/tatiana-sampaio-aquarela-laminina.jpg?resize=300%2C169&amp;ssl=1 300w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2026\/03\/tatiana-sampaio-aquarela-laminina.jpg?resize=768%2C432&amp;ssl=1 768w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2026\/03\/tatiana-sampaio-aquarela-laminina.jpg?resize=150%2C84&amp;ssl=1 150w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2026\/03\/tatiana-sampaio-aquarela-laminina.jpg?w=1200&amp;ssl=1 1200w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>Tatiana Coelho de Sampaio<\/strong>&nbsp;\u00e9 uma&nbsp;bi\u00f3loga brasileira que ganhou destaque internacional em 2025 e 2026 por liderar o desenvolvimento da&nbsp;polilaminina, prote\u00edna com potencial para regenerar tecidos nervosos em pacientes com les\u00e3o medular<\/figcaption><\/figure>\n\n\n\n<p class=\"has-cm-color-6-color has-text-color has-link-color has-medium-font-size wp-elements-838ceca20b66c8c61ef3c96f0f120a25\">Ao investigar os mecanismos da matriz extracelular, ela enfatiza a import\u00e2ncia do microambiente neural. N\u00e3o basta estimular neur\u00f4nios isoladamente. \u00c9 preciso recriar o contexto adequado. E a laminina ocupa posi\u00e7\u00e3o central nesse contexto. Assim, a compreens\u00e3o molecular transforma-se em estrat\u00e9gia terap\u00eautica.<\/p>\n\n\n\n<p class=\"has-cm-color-6-color has-text-color has-link-color has-medium-font-size wp-elements-90e4aa39bd7132fa0c4d8992e20abe66\">Al\u00e9m disso, sua atua\u00e7\u00e3o contribui para integrar <a href=\"https:\/\/biologo.com.br\/bio\/biologia-celular-desvendando-os-mecanismos-que-sustentam-a-vida\/\" type=\"post\" id=\"19948\"><span style=\"text-decoration: underline;\">biologia celular<\/span><\/a> e reabilita\u00e7\u00e3o funcional. Essa abordagem multidisciplinar amplia horizontes e, consequentemente, fortalece a transla\u00e7\u00e3o do laborat\u00f3rio para o hospital. <\/p>\n\n\n\n<p class=\"has-cm-color-6-color has-text-color has-link-color has-medium-font-size wp-elements-e0c5944abd1dfffae772eab4a176106a\">Portanto, o trabalho associado \u00e0 laminina simboliza mais que avan\u00e7o cient\u00edfico. Representa uma mudan\u00e7a estrutural. Antes, aceitava-se a irreversibilidade das les\u00f5es medulares. Agora, investiga-se a reconstru\u00e7\u00e3o poss\u00edvel. E essa mudan\u00e7a nasce da articula\u00e7\u00e3o entre dados experimentais e vis\u00e3o cl\u00ednica.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span><strong style=\"color: rgb(0, 0, 0); font-family: &quot;courier new&quot;, courier, monospace; font-size: 14pt; font-weight: bold;\">Regenera\u00e7\u00e3o neural e perspectivas terap\u00eauticas <\/strong><\/span><\/h4>\n\n\n\n<p class=\"has-cm-color-6-color has-text-color has-link-color has-medium-font-size wp-elements-4cb5206132b147ccda50d5f147fbe306\">Pesquisas contempor\u00e2neas exploram biomateriais impregnados com laminina. Esses <em>scaffolds <\/em>mimetizam a matriz natural. Consequentemente, criam microambientes regenerativos (Yao et al., 2014) e ampliam possibilidades terap\u00eauticas. Al\u00e9m da medula, a laminina mostra relev\u00e2ncia em les\u00f5es cerebrais. Ap\u00f3s acidente vascular cerebral, por exemplo, a reorganiza\u00e7\u00e3o da matriz \u00e9 fundamental.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized has-custom-border wp-duotone-magenta-yellow\"><a href=\"https:\/\/biologo.com.br\/bio\/funcionamento-dos-neuronios\/\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"631\" height=\"351\" data-attachment-id=\"5749\" data-permalink=\"https:\/\/biologo.com.br\/bio\/funcionamento-dos-neuronios\/funcionamento-dos-neuronios\/\" data-orig-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2019\/03\/Funcionamento-dos-neur%C3%B4nios.jpg?fit=631%2C351&amp;ssl=1\" data-orig-size=\"631,351\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Funcionamento-dos-neur\u00f4nios\" data-image-description=\"&lt;p&gt;Funcionamento dos neur\u00f4nios&lt;\/p&gt;\n\" data-image-caption=\"&lt;p&gt;Funcionamento dos neur\u00f4nios&lt;\/p&gt;\n\" data-large-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2019\/03\/Funcionamento-dos-neur%C3%B4nios.jpg?fit=631%2C351&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2019\/03\/Funcionamento-dos-neur%C3%B4nios.jpg?resize=631%2C351&#038;ssl=1\" alt=\"Funcionamento dos neur\u00f4nios\" class=\"wp-image-5749\" style=\"border-top-left-radius:54px;border-top-right-radius:54px;border-bottom-left-radius:54px;border-bottom-right-radius:54px;aspect-ratio:1.7977563103770644;width:631px;height:auto\" srcset=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2019\/03\/Funcionamento-dos-neur%C3%B4nios.jpg?w=631&amp;ssl=1 631w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2019\/03\/Funcionamento-dos-neur%C3%B4nios.jpg?resize=300%2C167&amp;ssl=1 300w\" sizes=\"auto, (max-width: 631px) 100vw, 631px\" \/><\/a><figcaption class=\"wp-element-caption\"><a href=\"https:\/\/biologo.com.br\/bio\/funcionamento-dos-neuronios\/\" type=\"post\" id=\"5742\">Funcionamento dos neur\u00f4nios<\/a><\/figcaption><\/figure>\n\n\n\n<p class=\"has-cm-color-6-color has-text-color has-link-color has-medium-font-size wp-elements-c0e03539cbbaebdd45d9ecb497ad3fef\">Importa destacar que a recupera\u00e7\u00e3o motora depende de m\u00faltiplos fatores. No entanto, a reorganiza\u00e7\u00e3o estrutural \u00e9 central. Sem substrato f\u00edsico adequado, n\u00e3o h\u00e1 reconex\u00e3o eficaz. E, sem reconex\u00e3o, n\u00e3o h\u00e1 movimento coordenado. Portanto, a laminina n\u00e3o age isoladamente, mas integra redes moleculares complexas. Interage com col\u00e1geno, fibronectina e proteoglicanos. Nesse sentido, seu papel orientador permanece singular.<\/p>\n\n\n\n<p class=\"has-cm-color-6-color has-text-color has-link-color has-medium-font-size wp-elements-1e6417ce675120c5c17240ea3fe3dd6b\">Em termos cl\u00ednicos, ainda h\u00e1 desafios. A entrega localizada da prote\u00edna exige precis\u00e3o. Al\u00e9m disso, doses inadequadas podem gerar efeitos indesejados. Por isso, protocolos rigorosos s\u00e3o indispens\u00e1veis. Apesar das limita\u00e7\u00f5es, os resultados experimentais s\u00e3o animadores. Animais com les\u00f5es severas recuperaram movimentos parciais. E, em alguns casos, retomaram locomo\u00e7\u00e3o coordenada.<\/p>\n\n\n\n<p class=\"has-cm-color-6-color has-text-color has-link-color has-medium-font-size wp-elements-b7c5fd022d28591c92a1bd77ece98024\">Sob perspectiva biol\u00f3gica, o movimento resulta de redes integradas. Neur\u00f4nios disparam. M\u00fasculos respondem. E a matriz sustenta tudo. Sem matriz funcional, o sistema colapsa. Entretanto, quando restauramos essa base, novas conex\u00f5es emergem e a recupera\u00e7\u00e3o deixa de ser milagre. Torna-se consequ\u00eancia biol\u00f3gica fundamentada.<\/p>\n\n\n\n<p class=\"has-cm-color-6-color has-text-color has-link-color has-medium-font-size wp-elements-286e2835eb427c45acb8d51d4c79b95c\">Em s\u00edntese, a laminina revela que o corpo guarda potenciais ocultos. Quando compreendemos sua arquitetura molecular, abrimos caminhos in\u00e9ditos. E, sobretudo, devolvemos movimentos antes perdidos. Portanto, a chave da recupera\u00e7\u00e3o pode estar, silenciosamente, na matriz que sustenta a vida e reconecta o que parecia definitivamente interrompido.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h6 class=\"wp-block-heading\"><span style=\"font-size: 10pt;\"><strong><strong style=\"font-family: &quot;courier new&quot;, courier, monospace; font-size: 12pt;\">Fontes e refer\u00eancias:<\/strong><\/strong><\/span><\/h6>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-black-color has-text-color has-link-color has-small-font-size wp-elements-f4bf35c4d6f1ba0ff027b66185a29181\">Timpl, R. et al. (1979). <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/114518\/\" target=\"_blank\" rel=\"noreferrer noopener\">Laminin \u2014 a glycoprotein from basement membranes<\/a>. <em>Journal of Biological Chemistry<\/em>.<\/li>\n\n\n\n<li class=\"has-black-color has-text-color has-link-color has-small-font-size wp-elements-09c3e0f050729966d46c5a3dd1276d03\">Colognato, H., &amp; Yurchenco, P. D. (2000). <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/10842354\/\" target=\"_blank\" rel=\"noreferrer noopener\">Form and function: the laminin family of heterotrimers<\/a>. <em>Developmental Dynamics<\/em>.<\/li>\n\n\n\n<li class=\"has-cm-color-6-color has-text-color has-link-color has-small-font-size wp-elements-6cdb730986119b6a78fefa59954456f2\">Yao, L. et al. (2014). <a href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC3785102\/\">Laminin-functionalized biomaterials for <\/a><a href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC3785102\/\" target=\"_blank\" rel=\"noreferrer noopener\">neural <\/a><a href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC3785102\/\">regeneration<\/a>. <em>Acta Biomaterialia<\/em>.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter is-resized\"><a href=\"https:\/\/biologo.com.br\/bio\/apoie-o-biologo\/\"><img loading=\"lazy\" decoding=\"async\" width=\"174\" height=\"147\" data-attachment-id=\"11979\" data-permalink=\"https:\/\/biologo.com.br\/bio\/caracal-um-mestre-da-sobrevivencia\/apoiepeq\/\" data-orig-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2022\/05\/apoiepeq.jpg?fit=174%2C147&amp;ssl=1\" data-orig-size=\"174,147\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"apoiepeq\" data-image-description=\"&lt;p&gt;Apoie o Bi\u00f3logo&lt;\/p&gt;\n\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2022\/05\/apoiepeq.jpg?fit=174%2C147&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2022\/05\/apoiepeq.jpg?resize=174%2C147&amp;ssl=1\" alt=\"Apoie o Bi\u00f3logo\" class=\"wp-image-11979\" style=\"width:156px;height:auto\" title=\"Apoie o Bi\u00f3logo\"\/><\/a><\/figure>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"https:\/\/biologo.com.br\/bio\/apoie-o-biologo\/\">Apoie o Bi\u00f3logo<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tatiana Sampaio e a laminina: a biologia brasileira desponta dando sobretudo um novo horizonte para a recupera\u00e7\u00e3o motora. Tatiana Sampaio<\/p>\n","protected":false},"author":1,"featured_media":20748,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[1],"tags":[],"class_list":["post-20744","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-biologia2"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Tatiana Sampaio e a laminina: em busca da recupera\u00e7\u00e3o de movimentos<\/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:\/\/biologo.com.br\/bio\/tatiana-sampaio-e-a-laminina\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Tatiana Sampaio e a laminina: em busca da recupera\u00e7\u00e3o de movimentos\" \/>\n<meta property=\"og:description\" content=\"Tatiana Sampaio e a laminina: a biologia brasileira desponta dando sobretudo um novo horizonte para a recupera\u00e7\u00e3o motora. 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