Brent crude edged up towards $110 a barrel on Friday and was on track for a weekly rise as unrest in Egypt stoked supply fears, but worries the Federal Reserve could soon trim its commodity-friendly stimulus curbed gains. Brent crude futures for October delivery were up 15 cents at $109.75 a barrel, positioned for a weekly rise of over 1 percent. U.S. crude oil futures for September climbed 19 cents to $107.52.