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词条 Proto-oncogene tyrosine-protein kinase Src
释义

  1. Discovery

  2. Structure

  3. Function

  4. Role in cancer

      Colon    Breast    Prostate  

  5. As a drug target

  6. Interactions

      Survival    Angiogenesis    Proliferation    Motility  

  7. Additional images

  8. References

  9. External links

{{Hatnote|This article is about the kinase c-Src, for the kinase that phosphorylates c-Src, see CSK.}}{{Infobox_gene}}

Proto-oncogene tyrosine-protein kinase Src, also known as proto-oncogene c-Src or simply c-Src , is a non-receptor tyrosine kinase protein that in humans is encoded by the SRC gene. This protein phosphorylates specific tyrosine residues in other proteins.

c-Src stands for "cellular Src kinase" and should not be confused with "C-terminal Src kinase" (CSK) which is an enzyme which phosphorylates c-Src at its C-terminus and provides negative regulation of Src's enzymatic activity. Similarly, c-Src should not be mistaken for v-Src, a viral (hence the prefix v-) gene that shares similarity with c-Src and is also an oncogene, which can be found in Rous sarcoma virus.

An elevated level of activity of c-Src tyrosine kinase is suggested to be linked to cancer progression by promoting other signals.[1] Mutations in this gene could be involved in the malignant progression of colon cancer.

This proto-oncogene may play a role in the regulation of embryonic development and cell growth.

c-Src includes an SH2 domain, an SH3 domain, and a tyrosine kinase domain.

Src (pronounced "sarc" as it is short for sarcoma) was originally discovered by J. Michael Bishop and Harold E. Varmus, for which they were awarded the 1989 Nobel Prize in Physiology or Medicine.[2] It belongs to a family of Src family kinases.This gene is similar to the v-Src gene of Rous sarcoma virus.

Two transcript variants encoding the same protein have been found for this gene.[3]

Discovery

In 1979, J. Michael Bishop and Harold E. Varmus discovered that normal chickens possess a gene that is structurally closely related to v-Src.[4] The normal cellular gene was called c-src (cellular-src).[5] This discovery changed the current thinking about cancer from a model wherein cancer is caused by a foreign substance (a viral gene) to one where a gene that is normally present in the cell can cause cancer. It is believed that at one point an ancestral virus mistakenly incorporated the c-Src gene of its cellular host. Eventually this normal gene mutated into an abnormally functioning oncogene within the Rous sarcoma virus. Once the oncogene is transfected back into a chicken, it can lead to cancer.

Structure

There are 9 members part of the Src family kinases: c-Src, Yes, Fyn, Fgr, Yrk, Lyn, Blk, Hck, and Lck.[6] The expression of these Src family members are not the same throughout all tissues and cell types. Src, Fyn and Yes are expressed ubiquitously in all cell types while the others are generally found in hematopoietic cells.[7][8][9][10]

c-Src is made up of 6 functional regions: Src homology 4 domain (SH4 domain), unique region, SH3 domain, SH2 domain, catalytic domain and short regulatory tail.[11] When Src is inactive, the phosphorylated tyrosine group at the 527 position interacts with the SH2 domain which helps the SH3 domain interact with the flexible linker domain and thereby keeps the inactive unit tightly bound. The activation of c-Src causes the dephosphorylation of the tyrosine 527. This induces long-range allostery via protein domain dynamics, causing the structure to be destabilized, resulting in the opening up of the SH3, SH2 and kinase domains and the autophosphorylation of the residue tyrosine 416.[12][13][14]

The autophosphorylation of Y416 as well as phosphorylation of selected Src substrates is enhanced through dimerization of c-Src.[15] The dimerization of c-Src is mediated by the interaction of the myristoylated N-terminal region of one partner and the kinase domain of another partner.[15] Both the N-terminally attached myristic acid and the peptide sequences of the unique region are involved in the interaction.[15] Given the versatility inherent in this intrinsically disordered region, its multisite phosphorylations, and its divergence within the family, the unique domain likely functions as a central signaling hub overseeing much of the enzymatic activities and unique functions of Src family kinases.[15]

c-Src can be activated by many transmembrane proteins that include: adhesion receptors, receptor tyrosine kinases, G-protein coupled receptors and cytokine receptors. Most studies have looked at the receptor tyrosine kinases and examples of these are platelet derived growth factor receptor (PDGFR) pathway and epidermal growth factor receptor (EGFR).

Src contains at least three flexible protein domains, which, in conjunction with myristoylation, can mediate attachment to membranes and determine subcellular localization.[16]

Function

This proto-oncogene may play a role in the regulation of embryonic development and cell growth.

When src is activated, it promotes survival, angiogenesis, proliferation and invasion pathways. It also regulates angiogenic factors and vascular permeability after focal cerebral ischemia-reperfusion,[17][18] and regulates matrix metalloproteinase-9 activity after intracerebral hemorrhage.[19]

Role in cancer

The activation of the c-Src pathway has been observed in about 50% of tumors from colon, liver, lung, breast and the pancreas.[20] Since the activation of c-Src leads to the promotion of survival, angiogenesis, proliferation and invasion pathways, the aberrant growth of tumors in cancers is observed. A common mechanism is that there are genetic mutations that result in the increased activity or the overexpression of the c-Src leading to the constant activation of the c-Src.

Colon

The activity of c-Src has been best characterized in colon cancer. Researchers have shown that Src expression is 5 to 8 fold higher in premalignant polyps than normal mucosa.[21][22][23] The elevated c-Src levels have also been shown to have a correlation with advanced stages of the tumor, size of tumor, and metastatic potential of tumors.[24][25]

Breast

EGFR activates c-Src while EGF also increases the activity of c-Src. In addition, overexpression of c-Src increases the response of EGFR-mediated processes. So both EGFR and c-Src enhance the effects of one another. Elevated expression levels of c-Src were found in human breast cancer tissues compared to normal tissues.[26][27][28]

Overexpression of Human Epidermal Growth Factor Receptor 2 (HER2), also known as erbB2, is correlated with a worse prognosis for breast cancer.[29][30] Thus, c-Src plays a key role in the tumor progression of breast cancers.

Prostate

Members of the Src family kinases Src, Lyn and Fgr are highly expressed in malignant prostate cells compared to normal prostate cells.[31] When the primary prostate cells are treated with KRX-123, which is an inhibitor of Lyn, the cells in vitro were reduced in proliferation, migration and invasive potential.[32] So the use of a tyrosine kinase inhibitor is a possible way of reducing the progression of prostate cancers.

As a drug target

A number of tyrosine kinase inhibitors that target c-Src tyrosine kinase (as well as related tyrosine kinases) have been developed for therapeutic use.[33] One notable example is dasatinib which has been approved for the treatment of chronic myeloid leukemia (CML) and Philadelphia chromosome-positive (PH+) acute lymphocytic leukemia (ALL).[34] Dasatinib is also in clinical trials for the use in non-Hodgkin’s lymphoma, metastatic breast cancer and prostate cancer. Other tyrosine kinase inhibitor drugs that are in clinical trials include bosutinib,[35] bafetinib, AZD-530, XLl-999, KX01 and XL228.[1]

Interactions

Src (gene) has been shown to interact with the following signaling pathways:

{{div col|colwidth=22em}}

Survival

  • PI3K
  • Akt
  • IKK
  • NFkB
  • Caspase 9

Angiogenesis

  • STAT3
  • p38 MAPK
  • VEGF
  • IL-8

Proliferation

  • Shc
  • Grb2/SOS
  • Ras
  • Raf
  • MEK1 / MEK2
  • Erk1/2

Motility

  • FAK
  • p190Rho/GAP
  • Paxillin
  • p130CAS
  • RhoA
  • JNK
  • c-jun
  • MLCK
  • Myosin
{{div col end}}

Additional images

{{ImportProtein/Src (gene)}}

References

1. ^1 {{cite journal |vauthors=Wheeler DL, Iida M, Dunn EF | title = The role of Src in solid tumors | journal = Oncologist | volume = 14 | issue = 7 | pages = 667–78 |date=July 2009 | pmid = 19581523 | pmc = 3303596 | doi = 10.1634/theoncologist.2009-0009 }}
2. ^{{cite web | url = http://nobelprize.org/nobel_prizes/medicine/laureates/1989/press.html | title = The Nobel Prize in Physiology or Medicine 1989: J. Michael Bishop, Harold E. Varmus | date = 1989-10-09 | publisher = Nobelprize.org | quote = for their discovery of 'the cellular origin of retroviral oncogenes' | accessdate =}}
3. ^{{Cite web| title = Entrez Gene: SRC v-src sarcoma (Schmidt-Ruppin A-2) viral oncogene homolog (avian)| url = https://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=6714| accessdate =}}
4. ^{{cite journal |author=Stehelin D, Fujita DJ, Padgett T, Varmus HE, Bishop JM. |title=Detection and enumeration of transformation-defective strains of avian sarcoma virus with molecular hybridization |journal= Virology |volume=76 |issue=2 |pages=675–84 |year=1977 |pmid=190771 |doi=10.1016/0042-6822(77)90250-1}}
5. ^{{cite journal | author = Oppermann H, Levinson AD, Varmus HE, Levintow L, Bishop JM | title = Uninfected vertebrate cells contain a protein that is closely related to the product of the avian sarcoma virus transforming gene (src) | journal = Proc. Natl. Acad. Sci. U.S.A. | volume = 76 | issue = 4 | pages = 1804–8 |date=April 1979 | pmid = 221907 | pmc = 383480 | doi = 10.1073/pnas.76.4.1804 |bibcode = 1979PNAS...76.1804O }}
6. ^{{cite journal |vauthors=Thomas SM, Brugge JS | title = Cellular functions regulated by Src family kinases | journal = Annu. Rev. Cell Dev. Biol. | volume = 13 | issue = | pages = 513–609 | year = 1997 | pmid = 9442882 | doi = 10.1146/annurev.cellbio.13.1.513 }}
7. ^{{cite journal |vauthors=Cance WG, Craven RJ, Bergman M, Xu L, Alitalo K, Liu ET | title = Rak, a novel nuclear tyrosine kinase expressed in epithelial cells | journal = Cell Growth Differ. | volume = 5 | issue = 12 | pages = 1347–55 |date=December 1994 | pmid = 7696183 | doi = }}
8. ^{{cite journal |vauthors=Lee J, Wang Z, Luoh SM, Wood WI, Scadden DT | title = Cloning of FRK, a novel human intracellular SRC-like tyrosine kinase-encoding gene | journal = Gene | volume = 138 | issue = 1–2 | pages = 247–51 |date=January 1994 | pmid = 7510261 | doi =10.1016/0378-1119(94)90817-6 }}
9. ^{{cite journal |vauthors=Oberg-Welsh C, Welsh M | title = Cloning of BSK, a murine FRK homologue with a specific pattern of tissue distribution | journal = Gene | volume = 152 | issue = 2 | pages = 239–42 |date=January 1995 | pmid = 7835707 | doi =10.1016/0378-1119(94)00718-8 }}
10. ^{{cite journal |vauthors=Thuveson M, Albrecht D, Zürcher G, Andres AC, Ziemiecki A | title = iyk, a novel intracellular protein tyrosine kinase differentially expressed in the mouse mammary gland and intestine | journal = Biochem. Biophys. Res. Commun. | volume = 209 | issue = 2 | pages = 582–9 |date=April 1995 | pmid = 7733928 | doi = 10.1006/bbrc.1995.1540 }}
11. ^{{cite journal | vauthors = Arbesú M, Maffei M, Cordeiro TN, Teixeira JM, Pérez Y, Bernadó P, Roche S, Pons M | title = The Unique Domain Forms a Fuzzy Intramolecular Complex in Src Family Kinases | journal = Structure | volume = 25 | issue = 4 | pages = 630–640.e4 | date = March 2017 | pmid = 28319009 | doi = 10.1016/j.str.2017.02.011 }}
12. ^{{cite journal |vauthors=Cooper JA, Gould KL, Cartwright CA, Hunter T | title = Tyr527 is phosphorylated in pp60c-src: implications for regulation | journal = Science | volume = 231 | issue = 4744 | pages = 1431–4 |date=March 1986 | pmid = 2420005 | doi =10.1126/science.2420005 | bibcode = 1986Sci...231.1431C }}
13. ^{{cite journal |vauthors=Okada M, Nakagawa H | title = A protein tyrosine kinase involved in regulation of pp60c-src function | journal = J. Biol. Chem. | volume = 264 | issue = 35 | pages = 20886–93 |date=December 1989 | pmid = 2480346 | doi = }}
14. ^{{cite journal |vauthors=Nada S, Okada M, MacAuley A, Cooper JA, Nakagawa H | title = Cloning of a complementary DNA for a protein-tyrosine kinase that specifically phosphorylates a negative regulatory site of p60c-src | journal = Nature | volume = 351 | issue = 6321 | pages = 69–72 |date=May 1991 | pmid = 1709258 | doi = 10.1038/351069a0 |bibcode = 1991Natur.351...69N }}
15. ^1 2 3 {{cite journal |vauthors=Spassov DS, Ruiz-Saenz A, Piple A, Moasser MM| title = A Dimerization Function in the Intrinsically Disordered N-Terminal Region of Src | journal = Cell Rep | volume = 25 | issue = 2 | pages = 6449–463 |date= Oct 2018 | pmid = 30304684| pmc = 6226010 | doi = 10.1016/j.celrep.2018.09.035}}
16. ^{{cite journal | vauthors = Kaplan JM, Varmus HE, Bishop JM | title = The src protein contains multiple domains for specific attachment to membranes | journal = Molecular and Cellular Biology | volume = 10 | issue = 3 | pages = 1000–9 | date = March 1990 | pmid = 1689455 | pmc = 360952 | doi = 10.1128/mcb.10.3.1000 }}
17. ^{{cite journal|vauthors=Zan L, Wu H, Jiang J, Zhao S, Song Y, Teng G, Li H, Jia Y, Zhou M, Zhang X, Qi J, Wang J|year=2011|title=Temporal profile of Src, SSeCKS, and angiogenic factors after focal cerebral ischemia: correlations with angiogenesis and cerebral edema.|journal=Neurochem. Int.|volume=58|issue=8|pages=872–9|doi=10.1016/j.neuint.2011.02.014|pmc=3100427|pmid=21334414}}
18. ^{{cite journal|vauthors=Zan L, Zhang X, Xi Y, Wu H, Song Y, Teng G, Li H, Qi J, Wang J|year=2013|title=Src regulates angiogenic factors and vascular permeability after focal cerebral ischemia-reperfusion.|journal=Neuroscience|volume=262|issue=3|pages=118–128|doi=10.1016/j.neuroscience.2013.12.060|pmc=3943922|pmid=24412374}}
19. ^{{cite journal|display-authors=etal|vauthors=Zhao X, Wu T, Chang CF|year=2015|title=Toxic role of prostaglandin E2 receptor EP1 after intracerebral hemorrhage in mice.|journal=Brain Behav. Immun.|volume=46|pages=293–310|doi=10.1016/j.bbi.2015.02.011|pmc=4422065|pmid=25697396}}
20. ^{{cite journal |vauthors=Dehm SM, Bonham K | title = SRC gene expression in human cancer: the role of transcriptional activation | journal = Biochem. Cell Biol. | volume = 82 | issue = 2 | pages = 263–74 |date=April 2004 | pmid = 15060621 | doi = 10.1139/o03-077 }}
21. ^{{cite journal |vauthors=Bolen JB, Rosen N, Israel MA | title = Increased pp60c-src tyrosyl kinase activity in human neuroblastomas is associated with amino-terminal tyrosine phosphorylation of the src gene product | journal = Proc. Natl. Acad. Sci. U.S.A. | volume = 82 | issue = 21 | pages = 7275–9 |date=November 1985 | pmid = 2414774 | pmc = 390832 | doi =10.1073/pnas.82.21.7275 | bibcode = 1985PNAS...82.7275B }}
22. ^{{cite journal |vauthors=Cartwright CA, Kamps MP, Meisler AI, Pipas JM, Eckhart W | title = pp60c-src activation in human colon carcinoma | journal = J. Clin. Invest. | volume = 83 | issue = 6 | pages = 2025–33 |date=June 1989 | pmid = 2498394 | pmc = 303927 | doi = 10.1172/JCI114113 }}
23. ^{{cite journal |vauthors=Talamonti MS, Roh MS, Curley SA, Gallick GE | title = Increase in activity and level of pp60c-src in progressive stages of human colorectal cancer | journal = J. Clin. Invest. | volume = 91 | issue = 1 | pages = 53–60 |date=January 1993 | pmid = 7678609 | pmc = 329994 | doi = 10.1172/JCI116200 }}
24. ^{{cite journal |vauthors=Aligayer H, Boyd DD, Heiss MM, Abdalla EK, Curley SA, Gallick GE | title = Activation of Src kinase in primary colorectal carcinoma: an indicator of poor clinical prognosis | journal = Cancer | volume = 94 | issue = 2 | pages = 344–51 |date=January 2002 | pmid = 11900220 | doi = 10.1002/cncr.10221 }}
25. ^{{cite journal |vauthors=Cartwright CA, Meisler AI, Eckhart W | title = Activation of the pp60c-src protein kinase is an early event in colonic carcinogenesis | journal = Proc. Natl. Acad. Sci. U.S.A. | volume = 87 | issue = 2 | pages = 558–62 |date=January 1990 | pmid = 2105487 | pmc = 53304 | doi =10.1073/pnas.87.2.558 | bibcode = 1990PNAS...87..558C }}
26. ^{{cite journal |vauthors=Ottenhoff-Kalff AE, Rijksen G, van Beurden EA, Hennipman A, Michels AA, Staal GE | title = Characterization of protein tyrosine kinases from human breast cancer: involvement of the c-src oncogene product | journal = Cancer Res. | volume = 52 | issue = 17 | pages = 4773–8 |date=September 1992 | pmid = 1380891 | doi = }}
27. ^{{cite journal |vauthors=Biscardi JS, Belsches AP, Parsons SJ | title = Characterization of human epidermal growth factor receptor and c-Src interactions in human breast tumor cells | journal = Mol. Carcinog. | volume = 21 | issue = 4 | pages = 261–72 |date=April 1998 | pmid = 9585256 | doi =10.1002/(SICI)1098-2744(199804)21:4<261::AID-MC5>3.0.CO;2-N }}
28. ^{{cite journal |vauthors=Verbeek BS, Vroom TM, Adriaansen-Slot SS, Ottenhoff-Kalff AE, Geertzema JG, Hennipman A, Rijksen G | title = c-Src protein expression is increased in human breast cancer. An immunohistochemical and biochemical analysis | journal = J. Pathol. | volume = 180 | issue = 4 | pages = 383–8 |date=December 1996 | pmid = 9014858 | doi = 10.1002/(SICI)1096-9896(199612)180:4<383::AID-PATH686>3.0.CO;2-N }}
29. ^{{cite journal |vauthors=Slamon DJ, Clark GM, Wong SG, Levin WJ, Ullrich A, McGuire WL | title = Human breast cancer: correlation of relapse and survival with amplification of the HER-2/neu oncogene | journal = Science | volume = 235 | issue = 4785 | pages = 177–82 |date=January 1987 | pmid = 3798106 | doi =10.1126/science.3798106 | bibcode = 1987Sci...235..177S }}
30. ^{{cite journal |vauthors=Slamon DJ, Godolphin W, Jones LA, Holt JA, Wong SG, Keith DE, Levin WJ, Stuart SG, Udove J, Ullrich A | title = Studies of the HER-2/neu proto-oncogene in human breast and ovarian cancer | journal = Science | volume = 244 | issue = 4905 | pages = 707–12 |date=May 1989 | pmid = 2470152 | doi =10.1126/science.2470152 | bibcode = 1989Sci...244..707S }}
31. ^{{cite journal |vauthors=Nam S, Kim D, Cheng JQ, Zhang S, Lee JH, Buettner R, Mirosevich J, Lee FY, Jove R | title = Action of the Src family kinase inhibitor, dasatinib (BMS-354825), on human prostate cancer cells | journal = Cancer Res. | volume = 65 | issue = 20 | pages = 9185–9 |date=October 2005 | pmid = 16230377 | doi = 10.1158/0008-5472.CAN-05-1731 }}
32. ^{{cite journal |vauthors=Chang YM, Bai L, Yang I | title = Survey of Src activity and Src-related growth and migration in prostate cancer lines | journal = Proc Am Assoc Cancer Res | year = 2002 | volume = 62 | pages = 2505a }}
33. ^{{cite journal |vauthors=Musumeci F, Schenone S, Brullo C, Botta M | title = An update on dual Src/Abl inhibitors | journal = Future Med Chem | volume = 4 | issue = 6 | pages = 799–822 |date=April 2012 | pmid = 22530642 | doi = 10.4155/fmc.12.29 | url = }}
34. ^{{cite journal |vauthors=Breccia M, Salaroli A, Molica M, Alimena G | title = Systematic review of dasatinib in chronic myeloid leukemia | journal = OncoTargets Ther | volume = 6 | issue = | pages = 257–65 | year = 2013 | pmid = 23569389 | pmc = 3615898 | doi = 10.2147/OTT.S35360 }}
35. ^{{cite journal |vauthors=Amsberg GK, Koschmieder S | title = Profile of bosutinib and its clinical potential in the treatment of chronic myeloid leukemia | journal = OncoTargets Ther | volume = 6 | issue = | pages = 99–106 | year = 2013 | pmid = 23493838 | pmc = 3594007 | doi = 10.2147/OTT.S19901 }}

External links

  • {{MeshName|src+Gene}}
  • {{MeshName|src-Family+Kinases}}
  • {{Proteopedia|SRC}} - interactive 3D model of the structure of SRC
  • Vega geneview
  • [https://web.archive.org/web/20110725154021/http://cmkb.cellmigration.org/report.cgi?report=fam_overview&fam_acc=cf00000204 Src] Info with links in the Cell Migration Gateway
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3 : Oncogenes|Genes mutated in mice|Tyrosine kinases
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