US STOCKS-Futures rise sharply after ECB cuts rates
* ECB cuts key rates; expands asset buying
* Dollar General, Square rise after results
* Futures up: Dow 134 pts, S&P 18.25 pts, Nasdaq 46 pts (Adds details, comment, updates prices)
By Abhiram Nandakumar
March 10 (Reuters) - U.S. stock index futures rose sharply on Thursday after the European Central Bank cut key interest rates to boost the euro zone economy.
The ECB cut its deposit rate deeper into negative territory and expanded its asset-buying program to 80 billion euros a month.
"We've been conditioned that the central banks are going to always bail us out. Whether that bailout will do anything, or work, doesn't matter at this point," said Matthew Tuttle, chief executive, Tuttle Tactical Management in Greenwich, Connecticut.
ECB President Mario Draghi is scheduled to hold a conference at 1330 GMT.
At 7:53 a.m. ET (1253 GMT), S&P 500 e-minis were up 18.25 points, or 0.92 percent, with 235,927 contracts traded. Nasdaq 100 e-minis were up 46 points, or 1.07 percent, on volume of 33,222 contracts. Dow e-minis were up 134 points, or 0.79 percent, with 35,630 contracts changing hands. Continuación...