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Interleukin-8 does not influence proliferation of the SGC7901 gastric cancer cell line.

Shi J, Wei PK - Oncol Lett (2014)

Bottom Line: However, IL-8 was shown to regulate PCNA protein and mRNA expression levels; at a concentration of 0.8 ng/ml, IL-8 significantly elevated the PCNA protein and mRNA expression levels, whereas IL-8 significantly inhibited these levels at other concentrations, compared with no treatment.In conclusion, IL-8 does not affect the proliferation of SGC7901 cells.However, IL-8 dosage was associated with PCNA protein and mRNA expression levels.

View Article: PubMed Central - PubMed

Affiliation: Department of Traditional Chinese Medicine, Shanghai Changzheng Hospital, The Second Military Medical University, Shanghai 200003, P.R. China.

ABSTRACT
Interleukin-8 (IL-8), an important inflammatory factor, is induced by Helicobacter pylori infection and is clearly associated with gastric cancer. IL-8 levels have been revealed to correlate significantly with the adhesion, migration and invasion of gastric cancer cells. However, whether IL-8 influences cell proliferation in gastric cancer remains unclear. In the present study, the effect of IL-8 on the proliferation of the SGC7901 human gastric cancer cell line was investigated. SGC7901 cells were exposed to various concentrations of IL-8 (0, 0.2, 0.5, 0.8 and 1 ng/ml) for one to seven days. Cell proliferation was detected by Cell Counting Kit-8 assay. In addition, proliferating cell nuclear antigen (PCNA) protein and mRNA levels were measured by immunofluorescence, western blotting and quantitative polymerase chain reaction. Following exposure of SGC7901 cells to the various concentrations of IL-8, no significant changes in terms of cell proliferation were identified. However, IL-8 was shown to regulate PCNA protein and mRNA expression levels; at a concentration of 0.8 ng/ml, IL-8 significantly elevated the PCNA protein and mRNA expression levels, whereas IL-8 significantly inhibited these levels at other concentrations, compared with no treatment. In conclusion, IL-8 does not affect the proliferation of SGC7901 cells. However, IL-8 dosage was associated with PCNA protein and mRNA expression levels.

No MeSH data available.


Related in: MedlinePlus

Growth of SGC7901 gastric cancer cells observed by an inverted microscope (magnification, ×10). (A) Prior to IL-8 addition, and (B–F) following the addition of 0, 0.2, 0.5, 0.8 and 1 ng/ml IL-8, respectively, the cells were incubated for 72 h. IL-8, interleukin-8.
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f1-ol-08-06-2475: Growth of SGC7901 gastric cancer cells observed by an inverted microscope (magnification, ×10). (A) Prior to IL-8 addition, and (B–F) following the addition of 0, 0.2, 0.5, 0.8 and 1 ng/ml IL-8, respectively, the cells were incubated for 72 h. IL-8, interleukin-8.

Mentions: The SGC7901 cells proliferated rapidly, exhibiting a fusiform shape, adherence and overlapping growth. The number of cells increased gradually between the first and the sixth days. On the seventh day, cell growth was arrested in the plateau phase with no further increase in the number of cells. The exposure of the cells to IL-8 at concentrations ranging from 0 to 1 ng/ml did not exert a significant effect on growth (Fig. 1).


Interleukin-8 does not influence proliferation of the SGC7901 gastric cancer cell line.

Shi J, Wei PK - Oncol Lett (2014)

Growth of SGC7901 gastric cancer cells observed by an inverted microscope (magnification, ×10). (A) Prior to IL-8 addition, and (B–F) following the addition of 0, 0.2, 0.5, 0.8 and 1 ng/ml IL-8, respectively, the cells were incubated for 72 h. IL-8, interleukin-8.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4214491&req=5

f1-ol-08-06-2475: Growth of SGC7901 gastric cancer cells observed by an inverted microscope (magnification, ×10). (A) Prior to IL-8 addition, and (B–F) following the addition of 0, 0.2, 0.5, 0.8 and 1 ng/ml IL-8, respectively, the cells were incubated for 72 h. IL-8, interleukin-8.
Mentions: The SGC7901 cells proliferated rapidly, exhibiting a fusiform shape, adherence and overlapping growth. The number of cells increased gradually between the first and the sixth days. On the seventh day, cell growth was arrested in the plateau phase with no further increase in the number of cells. The exposure of the cells to IL-8 at concentrations ranging from 0 to 1 ng/ml did not exert a significant effect on growth (Fig. 1).

Bottom Line: However, IL-8 was shown to regulate PCNA protein and mRNA expression levels; at a concentration of 0.8 ng/ml, IL-8 significantly elevated the PCNA protein and mRNA expression levels, whereas IL-8 significantly inhibited these levels at other concentrations, compared with no treatment.In conclusion, IL-8 does not affect the proliferation of SGC7901 cells.However, IL-8 dosage was associated with PCNA protein and mRNA expression levels.

View Article: PubMed Central - PubMed

Affiliation: Department of Traditional Chinese Medicine, Shanghai Changzheng Hospital, The Second Military Medical University, Shanghai 200003, P.R. China.

ABSTRACT
Interleukin-8 (IL-8), an important inflammatory factor, is induced by Helicobacter pylori infection and is clearly associated with gastric cancer. IL-8 levels have been revealed to correlate significantly with the adhesion, migration and invasion of gastric cancer cells. However, whether IL-8 influences cell proliferation in gastric cancer remains unclear. In the present study, the effect of IL-8 on the proliferation of the SGC7901 human gastric cancer cell line was investigated. SGC7901 cells were exposed to various concentrations of IL-8 (0, 0.2, 0.5, 0.8 and 1 ng/ml) for one to seven days. Cell proliferation was detected by Cell Counting Kit-8 assay. In addition, proliferating cell nuclear antigen (PCNA) protein and mRNA levels were measured by immunofluorescence, western blotting and quantitative polymerase chain reaction. Following exposure of SGC7901 cells to the various concentrations of IL-8, no significant changes in terms of cell proliferation were identified. However, IL-8 was shown to regulate PCNA protein and mRNA expression levels; at a concentration of 0.8 ng/ml, IL-8 significantly elevated the PCNA protein and mRNA expression levels, whereas IL-8 significantly inhibited these levels at other concentrations, compared with no treatment. In conclusion, IL-8 does not affect the proliferation of SGC7901 cells. However, IL-8 dosage was associated with PCNA protein and mRNA expression levels.

No MeSH data available.


Related in: MedlinePlus