Syöpäsolu

Syöpäsolu on solu, joka jakaantuu hallitsemattomasti, koska sen apoptoosi on häiriytynyt.

Syöpäsolu kehittyy elimistön normaalista solusta, kun solun jakaantumista säätelevät tekijät lakkaavat toimimasta. Tällöin solu alkaa jakaantua hallitsemattomasti, eli siitä tulee syöpäsolu. Syöpäsolut jakautuvat edelleen, jolloin syntyy kasvain. Kasvain vaurioittaa kudosta, johon se on kiinnittyneenä, esimerkiksi haimaa tai aivoja (haima- tai aivosyöpä). Kasvaimesta voi irrota syöpäsoluja, jotka leviävät imusuoniston mukana muihin elimistön osiin, eli syntyy etäpesäkkeitä. Syövän vaarallisuus perustuu juuri etäpesäkkeiden syntyyn. Syöpäsolujen sanotaan olevan "kuolemattomia",[1] eli ne jakaantuvat ja leviävät loputtomasti. Kasvain voidaan poistaa leikkauksella, tai solujen jakautumista voidaan hidastaa sytostaattihoidolla.

Lähteet

  1. ↑ Ulmanen, Tenhunen, Ylänne: Biologia: Geeni ja biotekniikka, s. 85. WSOY, 2004. Virhe: Virheellinen ISBN-tunniste

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