N-Deacetyl-N-methylcolchicine (Colcemid) is related to colchicine but it is less toxic. Colcemid depolymerizes microtubules and limits their formation. Appropriate dilutions inactivate the spindle fiber formation, thus arresting cells in metaphase and allowing cell harvest and karyotyping to be performed.

Applications:

  • Arrests cells in metaphase
  • For chromosome analysis during lymphocyte karyotyping or amniotic fluid cell chromosome analysis