From Wikipedia, the free encyclopedia
Leukemia inhibitory factor, or
LIF, an interleukin 6 class cytokine, is a protein in cells that affects cell growth and
development.
Function
LIF derives its name from its ability to induce the terminal differentiation of myeloid
leukaemic cells. Other properties attributed to the cytokine
include: the growth promotion and cell differentiation of different
types of target cells, influence on bone metabolism, cachexia, neural development, embryogenesis and
inflammation.
Binding/activation
LIF binds to the specific LIF receptor (LIFR-α) which forms a heterodimer with a specific subunit common
to all members of that family of receptors, the GP130 signal transducing
subunit. This leads to activation of the JAK/STAT
(Janus kinase/signal transducer and activator of
transcription) and MAPK (mitogen activated protein kinase) cascades.
Expression
LIF is normally expressed in the trophectoderm of the developing
embryo, with its receptor LIFR expressed throughout the inner cell
mass. As embryonic stem cells are derived from the inner cell
mass at the blastocyst stage, removing them from the inner cell
mass also removes their source of LIF.
Use in
stem cell culture
Removal of LIF pushes stem cells toward differentiation, but they
retain their proliferative potential or pluripotency. Therefore LIF
is used in mouse embryonic stem cell culture. It is necessary to
maintain the stem cells in an undifferentiated state, however
genetic manipulation of embryonic stem cells allows for LIF
independent growth, notably overexpression of the gene Nanog.
LIF is not required for culture of human embryonic stem
cells.
LIF does not work on rat ESC cultures.[1]
References
- ^
The Scientist, Vol. 23, No. 4, p. 21 (April 28, 2009).
Further
reading
- Patterson PH (1994). "Leukemia
inhibitory factor, a cytokine at the interface between neurobiology
and immunology.". Proc. Natl. Acad. Sci. U.S.A.
91 (17): 7833–5. doi:10.1073/pnas.91.17.7833. PMID 8058719.
- Aghajanova L (2005). "Leukemia
inhibitory factor and human embryo implantation.". Ann. N. Y.
Acad. Sci. 1034: 176–83. doi:10.1196/annals.1335.020. PMID 15731310.
- Králícková M, Síma P, Rokyta Z
(2005). "Role of the leukemia-inhibitory factor gene mutations in
infertile women: the embryo-endometrial cytokine cross talk during
implantation--a delicate homeostatic equilibrium.". Folia
Microbiol. (Praha) 50 (3): 179–86. doi:10.1007/BF02931563. PMID 16295654.
- Stahl J, Gearing DP, Willson TA,
et al. (1990). "Structural organization of the genes for
murine and human leukemia inhibitory factor. Evolutionary
conservation of coding and non-coding regions.". J. Biol.
Chem. 265 (15): 8833–41. PMID 1692837.
- Bazan JF (1991). "Neuropoietic
cytokines in the hematopoietic fold.". Neuron
7 (2): 197–208. doi:10.1016/0896-6273(91)90258-2. PMID 1714745.
- Lowe DG, Nunes W, Bombara M,
et al. (1989). "Genomic cloning and heterologous
expression of human differentiation-stimulating factor.".
DNA 8 (5): 351–9. PMID 2475312.
- Sutherland GR, Baker E, Hyland
VJ, et al. (1989). "The gene for human leukemia inhibitory
factor (LIF) maps to 22q12.". Leukemia 3
(1): 9–13. PMID 2491897.
- Mori M, Yamaguchi K, Abe K
(1989). "Purification of a lipoprotein lipase-inhibiting protein
produced by a melanoma cell line associated with cancer cachexia.".
Biochem. Biophys. Res. Commun. 160 (3):
1085–92. doi:10.1016/S0006-291X(89)80114-7. PMID 2730639.
- Gough NM, Gearing DP, King JA,
et al. (1988). "Molecular cloning and expression of the
human homologue of the murine gene encoding myeloid
leukemia-inhibitory factor.". Proc. Natl. Acad. Sci.
U.S.A. 85 (8): 2623–7. doi:10.1073/pnas.85.8.2623. PMID 3128791.
- Williams RL, Hilton DJ, Pease S,
et al. (1989). "Myeloid leukaemia inhibitory factor
maintains the developmental potential of embryonic stem cells.".
Nature 336 (6200): 684–7. doi:10.1038/336684a0.
PMID 3143916.
- Moreau JF, Donaldson DD, Bennett
F, et al. (1989). "Leukaemia inhibitory factor is
identical to the myeloid growth factor human interleukin for DA
cells.". Nature 336 (6200): 690–2. doi:10.1038/336690a0.
PMID 3143918.
- Yamaguchi M, Miki N, Ono M,
et al. (1995). "Inhibition of growth hormone-releasing
factor production in mouse placenta by cytokines using gp130 as a
signal transducer.". Endocrinology 136
(3): 1072–8. doi:10.1210/en.136.3.1072. PMID 7867561.
- Schmelzer CH, Harris RJ, Butler
D, et al. (1993). "Glycosylation pattern and disulfide
assignments of recombinant human differentiation-stimulating
factor.". Arch. Biochem. Biophys. 302
(2): 484–9. doi:10.1006/abbi.1993.1243. PMID 8489250.
- Aikawa J, Ikeda-Naiki S, Ohgane
J, et al. (1997). "Molecular cloning of rat leukemia
inhibitory factor receptor alpha-chain gene and its expression
during pregnancy.". Biochim. Biophys. Acta
1353 (3): 266–76. PMID 9349722.
- Hinds MG, Maurer T, Zhang JG,
et al. (1998). "Solution structure of leukemia inhibitory
factor.". J. Biol. Chem. 273 (22):
13738–45. doi:10.1074/jbc.273.22.13738. PMID 9593715.
- "Toward a complete human genome
sequence.". Genome Res. 8 (11): 1097–108.
1999. PMID 9847074.
- Tanaka M, Hara T, Copeland NG,
et al. (1999). "Reconstitution of the functional mouse
oncostatin M (OSM) receptor: molecular cloning of the mouse OSM
receptor beta subunit.". Blood 93 (3):
804–15. PMID 9920829.
- Nakashima K, Yanagisawa M,
Arakawa H, et al. (1999). "Synergistic signaling in fetal
brain by STAT3-Smad1 complex bridged by p300.". Science
284 (5413): 479–82. doi:10.1126/science.284.5413.479. PMID 10205054.
- Dunham I, Shimizu N, Roe BA,
et al. (1999). "The DNA sequence of human chromosome 22.".
Nature 402 (6761): 489–95. doi:10.1038/990031. PMID 10591208.
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PDB Gallery |
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1emr: CRYSTAL STRUCTURE OF HUMAN LEUKEMIA
INHIBITORY FACTOR (LIF)
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1pvh: Crystal structure of leukemia inhibitory
factor in complex with gp130
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See also
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Cell signaling: cytokines |
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