Placental growth factor

Placental growth factor is a protein that in humans is encoded by the PGF gene.[5][6]

PGF
Available structures
PDBOrtholog search: PDBe RCSB
Identifiers
AliasesPGF, D12S1900, PGFL, PLGF, PlGF-2, SHGC-10760, Placental growth factor, PIGF
External IDsOMIM: 601121 MGI: 105095 HomoloGene: 1978 GeneCards: PGF
Gene location (Human)
Chr.Chromosome 14 (human)[1]
Band14q24.3Start74,941,834 bp[1]
End74,955,626 bp[1]
RNA expression pattern


More reference expression data
Orthologs
SpeciesHumanMouse
Entrez

5228

18654

Ensembl

ENSG00000119630

ENSMUSG00000004791

UniProt

P49763

P49764

RefSeq (mRNA)

NM_002632
NM_001207012
NM_001293643

NM_001271705
NM_008827

RefSeq (protein)

NP_001193941
NP_001280572
NP_002623

NP_001258634
NP_032853

Location (UCSC)Chr 14: 74.94 – 74.96 MbChr 12: 85.17 – 85.18 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

Placental growth factor (PGF) is a member of the VEGF (vascular endothelial growth factor) sub-family - a key molecule in angiogenesis and vasculogenesis, in particular during embryogenesis. The main source of PGF during pregnancy is the placental trophoblast. PGF is also expressed in many other tissues, including the villous trophoblast.[7]

Placental growth factor (PGF) is a protein-coding gene and a member of the vascular endothelial growth factor (VEGF) family. PGF is ultimately associated with angiogenesis. Specifically, PGF plays a role in trophoblast growth and differentiation. Trophoblast cells, specifically extravillous trophoblast cells, are responsible for invading maternal arteries. Proper development of blood vessels in the placenta is crucial for proper embryonic development. Under normal physiologic conditions, PGF is also expressed at a low level in other organs including the heart, lung, thyroid, and skeletal muscle.

Clinical significance

Placental growth factor-expression within human atherosclerotic lesions is associated with plaque inflammation and neovascular growth.[8][9]

Serum levels of PGF and sFlt-1 (soluble fms-like tyrosine kinase-1, also known as soluble VEGF receptor-1) are altered in women with preeclampsia. Studies show that in both early and late onset preeclampsia, maternal serum levels of sFlt-1 are higher and PGF lower in women presenting with preeclampsia. In addition, placental sFlt-1 levels were significantly increased and PGF decreased in women with preeclampsia as compared to those with uncomplicated pregnancies. This suggests that placental concentrations of sFlt-1 and PGF mirror the maternal serum changes. This is consistent with the view that the placenta is the main source of sFlt-1 and PGF during pregnancy.1

PGF is a potential biomarker for preeclampsia, a condition in which blood vessels in the placenta are too narrow, resulting in high blood pressure. As mentioned before, extravillous trophoblast cells invade maternal arteries. Improper differentiation may result in hypo-invasion of these arteries and thus failure to widen enough. Studies have found low levels of PGF in women who were diagnosed with preeclampsia later in their pregnancy.

References

  1. GRCh38: Ensembl release 89: ENSG00000119630 - Ensembl, May 2017
  2. GRCm38: Ensembl release 89: ENSMUSG00000004791 - Ensembl, May 2017
  3. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. "Entrez Gene: PGF placental growth factor, vascular endothelial growth factor-related protein".
  6. Maglione D, Guerriero V, Viglietto G, Ferraro MG, Aprelikova O, Alitalo K, Del Vecchio S, Lei KJ, Chou JY, Persico MG (April 1993). "Two alternative mRNAs coding for the angiogenic factor, placenta growth factor (PlGF), are transcribed from a single gene of chromosome 14". Oncogene. 8 (4): 925–31. PMID 7681160.
  7. Khalil A, Muttukrishna S, Harrington K, Jauniaux E (July 2008). Lumbiganon P (ed.). "Effect of antihypertensive therapy with alpha methyldopa on levels of angiogenic factors in pregnancies with hypertensive disorders". PLOS ONE. 3 (7): e2766. doi:10.1371/journal.pone.0002766. PMC 2447877. PMID 18648513.
  8. Khurana R, Moons L, Shafi S, Luttun A, Collen D, Martin JF, Carmeliet P, Zachary IC (May 2005). "Placental growth factor promotes atherosclerotic intimal thickening and macrophage accumulation" (PDF). Circulation. 111 (21): 2828–36. doi:10.1161/CIRCULATIONAHA.104.495887. PMID 15911697.
  9. Shibuya M (April 2008). "Vascular endothelial growth factor-dependent and -independent regulation of angiogenesis". BMB Reports. 41 (4): 278–86. doi:10.5483/BMBRep.2008.41.4.278. PMID 18452647. Archived from the original on 2011-07-25.

Further reading

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