You seem to have written the reverse rule. Try this:
Options +FollowSymLinks -MultiViews
RewriteEngine On
RewriteRule ^article/([^/]+)/([^/]+)/([^/]+)/([^/]+)/?$ /article.php?issue=$1&edition=$2&id=$3&title=$4 [L,QSA,NC]
This will handle: /article/1/leeds/1394216062/jupiter-falls-to-tour-with-syron-vanes-and-rdc
URLs.