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Table 1 Identification of ECM constituents modulated in first and second tiers of defense upon hepatic injury

From: Molecular constituents of the extracellular matrix in rat liver mounting a hepatic progenitor cell response for tissue repair

Protein name

Gene symbol

Modulation of transcriptional profile

Product–moment correlation, coefficient r

  

First tier of defense using the PHx protocol as model system

Second tier of defense using the AAF/PHx protocol as model system

Krt1-19-geneX in second tier of defense using the AAF/PHx protocol as model system

Hepatic progenitor cell markersa

Keratin 19

Krt1-19

↑ *

+++++ M

α-Fetoprotein

Afp

↑ *

+++++ M

Epithelial cell adhesion molecule, EpCam

Tacstd1

↑ *

+++++ M

Delta-like homolog 1

Dlk1

↑ *

+++++ M

Deleted in malignant brain tumor 1

Dmbt1

↑ *

+++++ M

Glutathione S-transferase, pi

Gstp1

↑ *

+++++ M

Gap junction protein, α1 (Cx43)

Gja1

↑ *

+++++ M

Prominin, CD133

Prom1

↑ *

+++++ M

CD24

Cd 24

↑ *

+++++ M

Vimentin

Vim

↑ *

+++++ M

Proliferating cell nuclear antigen

PCNA

↑ *

+++++

Mesenchymal cell markers

Desmin

Des

+++

S100 calcium-binding protein A4

S100a4

++++

Secreted phosphoprotein 1 (osteopontin)

Spp1

++++

Extracellular matrix constituents

Basal lamina and ECM structural constituents

Agrin

Agrn

↓ *

↑ *

+++++ M

Biglycan

Bgn

↓ *

↑ *

+++++ M

Decorin

Dcn

↑ *

++++

Elastin

Eln

↑ *

+++++

Fibrillin 1

Fbn1

↑ *

+++++ M

Fibronectin 1

Fn1

↓ *

↑ *

+++

Fibulin 1

Fbln1

++++

Collagens

Col1a1

+++++

 

Col1a2

↑ *

+++++

 

Col3a1

↑ *

↑ *

+++++

 

Col4a1

↑ *

+++++ M

 

Col5a1

↑ *

+++++

 

Col5a2

↑ *

+++++

 

Col6a1

↑ *

+++++

 

Col6a3

↑ *

+++++

 

Col8a1

↑ *

+++++

 

Col9a3

↑ *

+++++ M

 

Col14a1

↑ *

↑ *

++++

 

Col16a1

↑ *

+++++

 

Col18a1

+++

Laminins

Lama2

↓ *

+++++

 

Lama5

↑ *

++ M

 

Lamb1

↑ *

+++++ M

 

Lamb2

↓ *

↑ *

++++ M

 

Lamc1

↑ *

↑ *

++

 

Lamc2

+++++

Integrins

Itga1

++

 

Itga4

↑ *

++++ M

 

Itga5

+++

 

Itga7

↓ *

+++

 

Itgb1

↑ *

++++

 

Itgb2

↓ *

↑ *

+++++ M

 

Itgb4

↑ *

+++++ M

 

Itgb6

↑ *

+++++ M

 

Itgb7

↑ *

+++

Nidogens

Nid1

↑ *

↑ *

+++++ M

 

Nid2

↑ *

+++++ M

Secreted protein, acidic, cysteine-rich, (osteonectin, SPARC)

Sparc

↑ *

↑ *

+++++

ECM proteases and inhibitors

Matrix metallopeptidases

Mmp2

++++

 

Mmp9

+++

 

Mmp12

↑ *

+++++ M

 

Mmp14

↑ *

+++

 

Mmp16

+++

 

Mmp19

↑ *

+++

 

Mmp23

↑ *

++++ M

TIMP metallopeptidase inhibitor 1

Timp1

↑ *

++

A disintegrin and metalloproteinase with thrombospondin motifs 1

Adamts1

+++++

Suppression of tumorigenicity 14 (matriptase)

St14

↑ *

+++++ M

Other ECM associated molecules

Connective tissue growth factor

Ctgf

↑ *

+++++ M

Elastin microfibril interfacer 1

Emilin1

↑ *

++++

Glypican 3

Gpc3

↑ *

+++++ M

Periostin, osteoblast specific factor

Postn

+++++

Syndecans

Sdc1

↑ *

++++

 

Sdc2

↓ *

↓ *

+++

Matriptase (St14) network components

Hepatocyte growth factor

Hgf

↑ *

+++

Hepatocyte growth factor activator

Hgfac

+++

Hepsin

Hpn

↓ *

+++

Kallikrein B, plasma 1

Klkb1

↓ *

++++

Plasminogen

Plg

↓ *

↓ *

+++

Plasminogen activator, urokinase

Plau

↑ *

+++

Protease, serine, 1 (trypsin 1)

Prss1

+++++

Protease, serine, 8 (prostasin)

Prss8

++++

Serine peptidase inhibitor, Kunitz type 1 (HAI-1)

Spint1

+++++

Serine peptidase inhibitor, Kunitz type 2 (HAI-2)

Spint2

↓ *

↓ *

++

Serine peptidase inhibitor, clade A (α-1 antiproteinase), member 1

Serpina1

↓ *

+++

Serine peptidase inhibitor, clade C (antithrombin), member 1

Serpinc1

+++++

Serine peptidase inhibitor, clade F (α-2 antiplasmin), member 1

Serpinf2

↓ *

↓ *

+++++

  1. A hypothetical list of constituents involved in extracellular matrix remodeling based on existing literature (See text for details). A list of significantly up- or down-modulated transcripts is provided in Additional file 1 and a graphic illustration of signal intensities in Additional file 2. Transcriptional profile: ↓, down-modulated; ↑, up-modulated; , not modulated. Correlation strength: +++++, 0.90 to 1.00, very strong; ++++, 0.70 to 0.89, strong; +++, 0.40 to 0.69, modest; ++, 0.20 to 0.39 weak; + 0.00 to 0.19, very weak. M, transcript levels modulated mainly in the second tier of defense. *Significantly modulated transcripts (P < 0.01, false discovery rate (FDR) < 5%). The product–moment correlation coefficient (r) was calculated for signal intensities between transcripts of interest relative to Krt1-19, a marker of the hepatic duct/progenitor cells.