Imperial College London


Faculty of MedicineDepartment of Surgery & Cancer

Senior Research Fellow



+44 (0)20 7594 2808l.magnani CV




140ICTEM buildingHammersmith Campus






BibTex format

author = {Ottaviani, S and Stebbing, J and Frampton, AE and Zagorac, S and Krell, J and de, Giorgio A and Trabulo, SM and Nguyen, VTM and Magnani, L and Feng, H and Giovannetti, E and Funel, N and Gress, TM and Jiao, LR and Lombardo, Y and Lemoine, NR and Heeschen, C and Castellano, L},
doi = {10.1038/s41467-018-03962-x},
journal = {Nature Communications},
title = {TGF-beta induces miR-100 and miR-125b but blocks let-7a through LIN28B controlling PDAC progression},
url = {},
volume = {9},
year = {2018}

RIS format (EndNote, RefMan)

AB - TGF-β/Activin induces epithelial-to-mesenchymal transition and stemness in pancreatic ductal adenocarcinoma (PDAC). However, the microRNAs (miRNAs) regulated during this response have remained yet undetermined. Here, we show that TGF-β transcriptionally induces MIR100HG lncRNA, containing miR-100, miR-125b and let-7a in its intron, via SMAD2/3. Interestingly, we find that although the pro-tumourigenic miR-100 and miR-125b accordingly increase, the amount of anti-tumourigenic let-7a is unchanged, as TGF-β also induces LIN28B inhibiting its maturation. Notably, we demonstrate that inactivation of miR-125b or miR-100 affects the TGF-β-mediated response indicating that these miRNAs are important TGF-β effectors. We integrate AGO2-RIP-seq with RNA-seq to identify the global regulation exerted by these miRNAs in PDAC cells. Transcripts targeted by miR-125b and miR-100 significantly overlap and mainly inhibit p53 and cell–cell junctions’ pathways. Together, we uncover that TGF-β induces an lncRNA, whose encoded miRNAs, miR-100, let-7a and miR-125b play opposing roles in controlling PDAC tumourigenesis.
AU - Ottaviani,S
AU - Stebbing,J
AU - Frampton,AE
AU - Zagorac,S
AU - Krell,J
AU - de,Giorgio A
AU - Trabulo,SM
AU - Nguyen,VTM
AU - Magnani,L
AU - Feng,H
AU - Giovannetti,E
AU - Funel,N
AU - Gress,TM
AU - Jiao,LR
AU - Lombardo,Y
AU - Lemoine,NR
AU - Heeschen,C
AU - Castellano,L
DO - 10.1038/s41467-018-03962-x
PY - 2018///
SN - 2041-1723
TI - TGF-beta induces miR-100 and miR-125b but blocks let-7a through LIN28B controlling PDAC progression
T2 - Nature Communications
UR -
UR -
UR -
VL - 9
ER -