REAGENT or RESOURCE	SOURCE	IDENTIFIER
Antibodies
CD63	Abcam	RRID: AB_940915
Calnexin	Cell Signaling Technology	RRID: AB_2228381
CD9	Cell Signaling Technology	RRID: AB_2798139
Alix	Cell Signaling Technology	RRID: AB_2299455
Col1a	Cell Signaling Technology	RRID: AB_2800169
Col3a	Invitrogen (M)	PA586281
Col3a	Cell Signaling Technology (H)	66887
CTGF	Abcam	RRID: AB_305688
P-SMAD2	Cell Signaling Technology	RRID: AB_2798798
TNFAIP3	Cell Signaling Technology	RRID: AB_10698880
GAPDH	Millipore	MAB374
Bacterial and virus strains
MIRZIP-218	System Biosciences	MZIP218
MIRZIP CTL	System Biosciences	MZIP000
Chemicals, peptides, and recombinant proteins
CHIR99021	Selleckchem	2924
Wnt-C59	Selleckchem	7037
Angiotensin II	Sigma-Aldrich	9525
TGF-beta 1	Novus Biologicals	7754
SB525334	Selleckchem	1476
Experimental models: Cell lines
Healthy iPSC line1	Stanford University BioBank	15
Healthy iPSC line2	Stanford University BioBank	479
Healthy iPSC line3	Stanford University BioBank	480
DCM patient iPSC line1	Stanford University BioBank	17
DCM patient iPSC line2	Stanford University BioBank	18
DCM patient iPSC line3	Stanford University BioBank	19
Experimental models: Organisms/Strains
Crl:CD1	Charles River	CD-1
Oligonucleotides
microRNA mimics	Horizon	C-300573
5′UTR wildtype	This paper	Genewiz
5′UTR mutation	This paper	Genewiz
Recombinant DNA
TNFAIP3	Origene	SC330856
Software and algorithms
Prism GraphPad	Dotmatics	https://www.graphpad.com/scientific-software/prism/
MicroRNA Analysis	This paper	https://doi.org/10.6084/m9.figshare.21764141
RNA22	Jefferson CMC	https://cm.jefferson.edu/rna22/
ImageJ	NIH	https://imagej.nih.gov/ij/