Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in the Registration Statement on Form S-1 filed pursuant to Rule 462(b) of the Securities Act of 1933 of the reference to our firm under the caption “Experts” and to the incorporation by reference of our report dated March 30, 2016 (except for Note 17(b) as to which the date is June 8, 2016), with respect to the consolidated financial statements of Selecta Biosciences, Inc. included in Amendment No. 2 to the Registration Statement (Form S-1 No. 333-211555) and related Prospectus of Selecta Biosciences, Inc.  for the registration of its common stock.