Sept 10 (Reuters) - S&P 500 and Nasdaq futures extended

gains on Wednesday, after cooler-than-expected producer prices

data for August boosted expectations for a September

interest-rate cut from the Federal Reserve.

A Labor Department report showed the Producer Price Index

rose 2.6% on an annual basis in August, compared with a 3.3%

gain expected by economists polled by Reuters. On a monthly

basis, it fell 0.1% compared with an estimated 0.3% rise.

Excluding volatile food and energy components, core PPI rose

2.8% on an annual basis, compared with an expected 3.5% rise.

At 08:32 a.m. ET, Dow E-minis were up 15 points, or

0.03%, Nasdaq 100 E-minis were up 116 points, or 0.49%,

and S&P 500 E-minis were up 32 points, or 0.49%.