Marcion formed his own church believing all of material creation was evil, the work of a vengeful god who was ignorant of the higher God of love. He held that the redemption Christ brought sprang from the desire of the higher God to redeem those who accepted Christ from the evils of this world. And since this vengeful god is the one to whom the Jewish Scriptures point, in his view Christ did not come to fulfill, but to abolish the law and the prophets. In Marcion's view Jewish Scriptures had only negative significance, it was from such a religion that Christ had come to redeem humanity. So, yes, he turned to Paul and also to Luke in whom Marcion found a like theology. But he was not faithful to the writings of Paul as he had no problem deleting from the letters of Paul those passages which spoke in a positive way about the Jewish faith, its law and its prophets, and the same with Luke, deleting anything showing anything positive about the Jewish faith.
The Marcion threat was one reason for the early church to establish the Canon.