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. 2020 Apr 15;10:397. doi: 10.3389/fonc.2020.00397

Table 1.

ECM fragments affect the main hallmarks of cancer progression.

ECM bioactive fragments Parent molecule Generating enzymes Receptors Biological activity
Collagen fragments
Type IIB procollagen NH2 propeptide Type IIB collagen ADAMTS-3 (20) αvβ3, αvβ5 integrins (21) ↗ EC and tumor cell death (chondrosarcoma, cervical and breast cancer) (21) through programmed cell necrosis (22)
Arresten (α1 chain NC1 domain) Type IV collagen Cathepsin S (23)
MT1-MMP, MT2-MMP (24)
α1β1 integrin (25, 26) ↘ Angiogenesis and tumor growth (melanoma, glioblastoma, colorectal and lung cancer, squamous cell carcinomas) (25)
↘ FAK/c-Raf/MEK-1/2/ERK-1/2/p38 MAPK pathways in EC↗ EC apoptosis through bcl-xl/bax ratio modulation (25)
Canstatin (α2 chain NC1 domain) Type IV collagen Cathepsin S (23)
MT1-MMP, MT2-MMP (24)
α1β1, αvβ3, αvβ5 integrins (27) ↘ Angiogenesis and tumor growth (ocular, lung, breast, oral squamous cell, esophageal carcinoma, gastric, ovarian, pancreatic, prostate, and colorectal cancer (28)
↘ VEGF-A/VEGFR-1-2 signaling pathway in squamous cell carcinoma (29)
↗ Apoptosis in cancer cell and EC through bcl-2bcl-xl/bax ratio modulation (30)
↘ Caspase 8 and 9 activation in EC (27)
Tumstatin (α3 chain NC1 domain) Type IV collagen MMP-9 (31) αvβ3, αvβ5 integrins (32) ↘ Angiogenesis and tumor growth (melanoma, glioma, osteosarcoma, breast, colon, prostate and lung cancer, gastric, hepatocellular, and squamous cell carcinoma (33, 34)
54–132 amino-acid sequence 54–132 amino-acid sequence:↗ G1 arrest, ↗ caspase-3 activation and ↘ FAK/PI3K/Akt/mTOR pathway in ECs (35)
185–203 amino-acid sequence 185–203 amino-acid sequence :↘ melanoma and EC migration through a decrease in MMP-2, uPA, t-PA (36)
Tetrastatin (α4 chain NC1 domain) Type IV collagen αvβ3 integrin (37) ↘ Tumor growth (melanoma, glioma, osteosarcoma, breast, colon, prostate and lung cancer, gastric, hepatocellular and squamous cell carcinoma (3740)
↘ FAK/PI3K/Akt pathway and ↘ MMP-2 in tumor cells (37, 38)
Lamstatin (α5 chain NC1 domain) Type IV collagen ↘ Angiogenesis (41) and lung cancer growth (42, 43)Unknown molecular mechanism
Hexastatin (α6 chain NC1 domain) Type IV collagen ↘ Angiogenesis and tumor growth (Lewis lung carcinoma and spontaneous pancreatic insulinoma) (44)Unknown molecular mechanism
Vastatin (NC1 domain of collagen VIII alpha 1 chain) Type VIII collagen ↘ EC proliferation and tumor growth and metastasis in murine hepatocellular carcinoma models (45)
↘ PcK1, JAG2, and c-Fos, ↘ Notch/AP-1 pathway (46)
Restin (NC10 domain of collagen XV) Type XV collagen ↘ EC migration, renal carcinoma growth (47) and breast cancer metastasis (48)
↘ ATF3 activity by direct interaction (49)
↘ EMT through p-73 binding, mir-200a/b increase and ZEB1/2 inhibition in breast cancer cells (48)
Endostatin (20-kDa C-terminal fragment of collagen XVIII) Type XVIII collagen α5β1 integrin; caveolin-1 (50) ↘ Angiogenesis, lymphangiogenesis and tumor growth (51)
↗ Src-kinase pathway, ↘ RhoA GTPase activity; ↘ Ras/c-Raf/p38/Erk-1 pathway in EC (52, 53)
Frizzled domain (FZC18): ↘ Wnt/β-catenin pathway (54)
NC1 XIX Type XIX collagen Plasmin (55) αvβ3 integrin (56) ↘ Melanoma cell migration, invasion, tumor growth and angiogenesis (56, 57)
↘ MMP-14 (57) in melanoma↘ FAK/PI3K/Akt/mTOR pathway in melanoma cells (57)
Elastin fragments
VG-6 (VGVAPG) Elastin Proteinase 3, cathepsin G (58), MMP-7,9,12 (59), neprilysin (60) ERC, αvβ3 and αvβ5 integrins, galactin-3 (61), RPSA (62) ↗ Angiogenesis (63) and tumor growth in melanoma models (62, 64, 65)
↗ MT1-MMP, ↗ PI3K/Akt/NO synthase, ↗ NO/cGMP/Erk1/2 pathways in EC (66)
↗ IL-1β through NF-κB pathway in melanoma cell (67)
↗ MMP and plasminogen activation cascades in cancer cells
AG-9 (AGVPGLGVG) Elastin Proteinase 3, cathepsin G (58), MMP-7,9,12 (59), neprilysin (60) RPSA (62) ↗ Tumor growth in a melanoma model (62)
↗ Tumor cell migration, invasion through MMP and plasminogen activation cascades
Laminin fragments
IKVAV (α1 chain fragment) Laminin-111 α3β1 and α6β1 integrins (68) ↗ Angiogenesis, tumor growth, and metastasis (68)
↗ bone marrow mesenchymal stem cell proliferation by activating MAPK/ERK1/2 and PI3K/Akt signaling pathways (69)
↗ t-PA in melanoma cells (68)
AG73 (RKRLQVQLSIRT from α1 chain) Laminin-111 Syndecans 1, 2, and 4 (68) ↗ Angiogenesis and tumor growth (68)
↗ Rac1 and ERK1/2 signaling pathways (70)
YIGSR (β1 chain fragment) Laminin-111 67 KD receptor (68) ↘ Tumor growth and metastasis (68)
Unknown mechanism
C16 (KAFDITYVRLKF from γ1 chain) Laminin-111 αvβ3 and α5β1 integrins (68) ↗ Tumor growth (68)
↗ MMP-9 production in melanoma cells (68)
γ2 chain N-terminal fragment Laminin 332 MMP-2, cathepsin S, MT1-MMP (71) α3β1 integrin, CD-44 (71) ↗ Angiogenesis, tumor growth and metastasis (71)
Unknown mechanism
α3 chain C-terminal fragment Laminin 332 Plasmin, MMP-2, MT1-MMP, C-proteinase, mTLD, BMP-1 (71) α3β1 and α6β1 integrins (71) ↗ Angiogenesis, tumor growth (71)
Unknown mechanism
A5G27 (RLVSYNGIIFFLK from α5 chain) Laminin 511 Cell surface glycans (72) ↘ Breast tumor cell proliferation↗ 4T1.2 experimental pulmonary metastasis (72)
Unknown mechanism
Fibronectin fragments
Anastellin (type III module) Fibronectin ↘ Angiogenesis, tumor growth and metastasis (73)
↗ p38 MAPK activation in EC (74)
Proteoglycans fragments
Metastatin Aggrecan ADAMTS (75) ↘ Growth, migration, angiogenesis of melanoma and prostate cancer (76)
Unknown mechanism
EndorepellinLG3 fragment (C-terminal fragment of Endorepellin) Perlecan MMP-7 (77)Cathepsin L and BMP-1-Tolloid-like proteases (78) α2β1 integrin (79) ↘ EC proliferation and migration, angiogenesis, tumor growth (7884)
↘ VEGF-A/VEGFR pathway in EC (79)
↗ autophagy through Peg3 activation in EC (79, 85)
Versikine Versican ADAMTS (86) TLR2 (34) ↗ Immunogenicity in myeloma (87, 88)
↗ IL-1β, IL-6 expression by myeloma-associated macrophages through both Ppl2 kinase-dependent or -independent pathways (88)
Lumcorin (SSLVELDLSYNKLKNIP)L9M (ELDLSYNKLK) Lumikine/LumC13 (YEALRVANEVTLN) Lumican α2β1 integrin (89), MMP-14 (90, 91), ALK5/TGFβR1 (92) ↘ Growth, migration, angiogenesis in melanoma and breast cancer (9396)
↘ FAK/Akt/ERK pathway↘ MMP-14 proteolytic activity (90, 97)
↗ keratocytes migration (92, 98)
Synstatins
SSTN 92-119, SSTN 82-130, SSTN 210-240 Syndecan-1 αvβ3, αvβ5 and α3β1 integrins,
HER2, VEGFR2 (co-receptors of ectodomain) (34, 99103)
↘ Angiogenesis in breast cancer (104106)Depend on HER2- and EGFR-coupled mechanism (104)
SSTN87-131 Syndecan-4 EGFR, α3β1 integrin (co-receptors of ectodomain) (34) ↘ Cell motility (104)Depend on HER2- and EGFR-coupled mechanism (104)
Glypican fragments
Glypican-3 derived peptide Glypican-3 Wnt ↗ Cell proliferation, migration and invasion in hepatocellular carcinoma (107)
↗ Wnt/β-catenin, Hedgehog, and YAP pathway (108110)
↗ Macrophage recruitments in tumor (108)
↗ EMT (108)
Has
HA oligosaccharides HA CD44 (111) Alters tumor growth, metastatic potential, and progression in prostate, colon, breast, and endometrial cancers (112, 113, 165)LMW HA promotes angiogenesis (114)HMW HA decreases angiogenesis, induces EMT (114)

4E-BP1 protein, eukaryotic initiation factor 4E-binding protein 1; ADAMTS, a disintegrin and metalloproteinase with thrombospondin motifs; AP-1, activator protein 1; ATF, activating transcription factor; ALK5, TGFβ type I receptor kinase; BMP, bone morphogenetic protein; cGMP, cyclic guanosine monophosphate; EC, endothelial cell; ECM, extracellular matrix; EGFR, epidermal growth factor receptor; EMT, epithelial–mesenchymal transition; ERC, elastin receptor complex; ERK, extracellular signal-regulated kinase; FAK, focal adhesion kinase; HA, hyaluronan; HER2, human epidermal growth factor receptor-2; HMW-HA, high-molecular-weight HA; IL, interleukin; JAG2, jagged canonical Notch ligand 2; LMW-HA, low-molecular-weight HA; MAPK, mitogen-activated protein kinase; MEK, MAPK/ERK kinase; MMP, matrix metalloproteinase; mTLD, mammalian Tolloid; mTOR, mammalian target of rapamycin; NF, nuclear factor; NO, nitric oxide; PI3K, phosphoinositide 3-kinase; RPSA, ribosomal protein SA; TLR, Toll-like receptor; t-PA, tissue-type plasminogen activator; uPA, urokinase-type plasminogen activator; VEGF, vascular endothelial growth factor; VEGFR, vascular endothelial growth factor tyrosine kinase receptor; TGFβ, transforming growth factor β.