Horst Ibelgaufts. Dictionary of Cytokines. VCH, 1995. Weinheim. Germany. New York. Basel. Cambridge. Tokyo.ISBN 3-5277-30042-2.
Sivuja on 777.
Asiat on ryhmitelty sisällysluetelon mukaan täten:
How tu use this dictionnary, XV
Abbreviation,s XVI
Amino acids one and three letter codes, XVI
Journal citation,s XVII
Introduction, XIX
Entries with number prefixes , 1
A-Z, 12- 761
Addendum, 762.
Mitä löydän sellaista, mikä koskee matrixmetalloproteiineja?
TIMP, tissue inhibitor of metalloproteases.(Sitaatti engl. ss 705-706)
The synthesis and secretion of matrix metalloproteinases (MMPs) is induced in various cell types by a number of cytokines including EGF, PDGF, IL1, IL8, IL1beta, TNFalfa and bFGF.
Metallloproteinases degrade constituents of the basal membrane and the extracellular matrix, including collagens, proteoglycans, gelatin, fibronectin, laminin, and elastin, under physiological and pathological conditions. The activities of these enzymes also facilitate the invasive migration of cells.
The biological activities of the proteases is subject to a complex regulation also involving specific inhibitors, called TIMP (tissue inhibitor of metalloproteinases). Many proforms of these metalloproteinases form complexes with these inhibitors. TIMP is a major regulator of extracellular matrix synthesis and degradation.
The two inhibitors are called TIMP-1 and TIMP-2. TIMP-1 is a protein of 28 kDa, TIMP-2 of 21 kDa. TIMP-1 and TIMP--2 exhibit and overall similarity of 71% at the protein level
TIMP-1 is also the same as HCI, human collagenase inhibitor.
The murine 3/10 gene is the homologue of human TIMP-2.
mTIMP ja hTIMP2 display 96% homology at protein level. Homology between mTIMP1 and mTIMP2 is 42%. TIMP-1 gene lies within intron 6 (out of 13) of the X-linked synapsin 1(synapsin 1) gene in both man (Xp11.1-p11.4) and mouse. It is transcribed in the opposite direction to the SYN1 gene in the mouse.
The disruption of the TIMP-1 gene in a pluripotent embryonic stem cells increase the invasive properties of these cells in an in vitro assay. The introduction of TIMP-1 gene into invasively growing melanoma cells (B16-F10) leads to the overproduction of this inhibitor and suppresses invasive growth. Apart from their biological activities as inhibitors of metalloproteinases TIMP-1 and TIMP-2 also function as growth factors for many human and murine cell types.
TIMP-2 inhibits the activities of transin, matrin (pump-1), 72kDa gelatinase/type IV collagenase (MMP-2), matrix metalloproteinase), and interstitial colalgenase. TIMP-2 regulates not only the activity of the mature enzyme but also the autolytic processing of the proenzyme. TIMP-2 has recently ( = 1995) been found to be secreted by mouse folliculo-stellate cell. It acts as a cell survival factor for endocrine cells in the anterior pituitary gland.
Both inhibitors also influence the capacity of erythroid progenitor cells to grow as colonies in soft agar (See also: Colony formation assay).
TIMPs are identical with EPA ( erythroid promoting activity)
(Olipas tässä vanhassa uutta, sano)
- Huomaan myös että suomalainen Alitalo R et al. on referensseissä mukana artikkelilla:
- Kun tästä lähden etsimään missä on uusimpia R Alitalo et al. ryhmän tekstejä päädyn mm tähän:
CANCER DEGRADOME. Proteases and Cancer Biology.
Siis TIMP on hahmotettu tässä syövän degradomissakin, joka on lähisuhteissa rheologisen alueen kaskadiin ( plasmiinijohdannaislinkin kautta) ja ylläolevasta näkyy,myös itseensä hematopoieesiin ( bifunktionaalisesti vaikuttaen hematopoieesin mikromiljööseen) -- matrixin muuttumissäätelyn lisäksi.
Nämä hematopoieesivaikutukset täytyy ottaa erikseen Kirjan sivulla 706 on lähteitä.
- TIMP-3
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