The Memorial Sloan-Kettering Cancer Center has made an $80.1 million bid on the former home of the Cabrini Medical Center, which closed last year at its Gramercy-area location between East 19th and East 20th streets between Second and Third avenues. Sloan-Kettering’s bid is a last-minute move for an auction slated for Thursday, one that tops the second-place bidder, developer J.D. Carlisle, by just $100,000. These bids for the 450,000-square-foot property still fall short of what Cabrini owes its creditors by 44 percent. Another medical center may soon be up for grabs as well — as was reported today, St. Vincent’s Hospital could face closure.