Bucky Cantor as a version of Roth in Nemesis

Has anyone who's read "Nemesis" wondered to what extent the lead character, Bucky Cantor, is a version of the author, Philip Roth? I'm not one who likes to reduce every story or novel to an autobiographical document and I understand that a novel is a "text" that has an existence independent, to some degree, of its authorship and its historical particulars and that we can understand a novel by deconstructing it rather than by obeisance before it as a holy scripture - and yet, Roth is an author who is constantly playing with his own presence within his fiction, has written several novels that include the character Philip Roth, not exactly the same thing as the writer Philip Roth, and others with clearly Rothian characteristics. But Bucky? At first, he seems very unlike Roth - small, very athletic, severe, humorless, wracked by guilt and torn by ethical quandaries, though devoted to family ashamed of his ignoble parentage (on father's line) and feels he has to make good for his father's failings. On deeper examination, though, aren't there Roth qualities to Bucky: we learn through the novel that he feels he has to escape from the venomous climate of Newark, he leaves for isolation in the countryside, at first that seems healthy, but he's drawn inevitably back to the miseries of his native city, and ultimately is blamed, and blames himself, for spreading a pestilential disease (polio) among the Jews of Newark. Isn't this in some way a version of Roth's difficult relations with the Jewish readership? The author may see himself as a hero, but to others he may be the one who spreads disease. At the end, Bucky is alone, childless, living in narrow confines while life goes on all around him - that's a crude exaggeration of Roth's life - by all accounts he has a rich and vibrant social life - but there's something about the isolation and self-imposed exile that they may share.