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Expression of and response to growth regulatory peptides by two human pancreatic carcinoma cell lines.
Pancreas 1990; 5(4):369-80P

Abstract

Two human pancreatic adenocarcinoma cell lines (PANC 1 and MIA PACA 2) were examined for expression of growth factors that could potentially play a role either in growth regulation of the tumor cells, or in cells that comprise the stromal elements of tumors. Both cell lines expressed transforming growth factor-alpha (TGF alpha), basic fibroblast growth factor (bFGF), c-sis (PDGF B chain), TGF beta 1, and TGF beta 3 mRNA by Northern blot analysis. Only the PANC 1 cells, however, expressed the TGF beta 2 transcript. TGF beta-like competing activity was found in medium conditioned by either cell line, but TGF alpha-like [epidermal growth factor (EGF)-competing] activity was not detected in the medium from either cell line by radioreceptor assay. TGF alpha and EGF caused concentration-dependent stimulation of soft agar colony growth of the MIA PACA 2 cells, while only TGF alpha caused a significant but less dramatic stimulation of soft agar growth of the PANC 1 cells. Insulin stimulated the anchorage-independent growth of MIA PACA 2 but not PANC 1 cells. Likewise, bFGF also caused a concentration-dependent stimulation of MIA PACA 2 but not PANC 1 growth in soft agar, and PDGF had no effect on the growth of either cell line. TGF beta had no inhibitory or stimulatory effect on soft agar colony growth of either the PANC 1 or the MIA PACA 2 cells, although both cell lines exhibited high affinity, saturable TGF beta binding sites, and TGF beta 1 was capable of autoinduction of TGF beta 1 mRNA expression in PANC 1 cells. The ability to continue to respond to positive growth regulatory factors coupled with the loss of responsiveness to negative growth factors may be important in the pathogenicity of these aggressive tumors.

Authors+Show Affiliations

Department of Cell Biology, Vanderbilt University, Nashville, Tennessee.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, U.S. Gov't, Non-P.H.S.
Research Support, U.S. Gov't, P.H.S.

Language

eng

PubMed ID

2199964

Citation

Beauchamp, R D., et al. "Expression of and Response to Growth Regulatory Peptides By Two Human Pancreatic Carcinoma Cell Lines." Pancreas, vol. 5, no. 4, 1990, pp. 369-80.
Beauchamp RD, Lyons RM, Yang EY, et al. Expression of and response to growth regulatory peptides by two human pancreatic carcinoma cell lines. Pancreas. 1990;5(4):369-80.
Beauchamp, R. D., Lyons, R. M., Yang, E. Y., Coffey, R. J., & Moses, H. L. (1990). Expression of and response to growth regulatory peptides by two human pancreatic carcinoma cell lines. Pancreas, 5(4), pp. 369-80.
Beauchamp RD, et al. Expression of and Response to Growth Regulatory Peptides By Two Human Pancreatic Carcinoma Cell Lines. Pancreas. 1990;5(4):369-80. PubMed PMID: 2199964.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Expression of and response to growth regulatory peptides by two human pancreatic carcinoma cell lines. AU - Beauchamp,R D, AU - Lyons,R M, AU - Yang,E Y, AU - Coffey,R J,Jr AU - Moses,H L, PY - 1990/7/1/pubmed PY - 2001/3/28/medline PY - 1990/7/1/entrez SP - 369 EP - 80 JF - Pancreas JO - Pancreas VL - 5 IS - 4 N2 - Two human pancreatic adenocarcinoma cell lines (PANC 1 and MIA PACA 2) were examined for expression of growth factors that could potentially play a role either in growth regulation of the tumor cells, or in cells that comprise the stromal elements of tumors. Both cell lines expressed transforming growth factor-alpha (TGF alpha), basic fibroblast growth factor (bFGF), c-sis (PDGF B chain), TGF beta 1, and TGF beta 3 mRNA by Northern blot analysis. Only the PANC 1 cells, however, expressed the TGF beta 2 transcript. TGF beta-like competing activity was found in medium conditioned by either cell line, but TGF alpha-like [epidermal growth factor (EGF)-competing] activity was not detected in the medium from either cell line by radioreceptor assay. TGF alpha and EGF caused concentration-dependent stimulation of soft agar colony growth of the MIA PACA 2 cells, while only TGF alpha caused a significant but less dramatic stimulation of soft agar growth of the PANC 1 cells. Insulin stimulated the anchorage-independent growth of MIA PACA 2 but not PANC 1 cells. Likewise, bFGF also caused a concentration-dependent stimulation of MIA PACA 2 but not PANC 1 growth in soft agar, and PDGF had no effect on the growth of either cell line. TGF beta had no inhibitory or stimulatory effect on soft agar colony growth of either the PANC 1 or the MIA PACA 2 cells, although both cell lines exhibited high affinity, saturable TGF beta binding sites, and TGF beta 1 was capable of autoinduction of TGF beta 1 mRNA expression in PANC 1 cells. The ability to continue to respond to positive growth regulatory factors coupled with the loss of responsiveness to negative growth factors may be important in the pathogenicity of these aggressive tumors. SN - 0885-3177 UR - https://www.unboundmedicine.com/medline/citation/2199964/Expression_of_and_response_to_growth_regulatory_peptides_by_two_human_pancreatic_carcinoma_cell_lines_ L2 - http://dx.doi.org/10.1097/00006676-199007000-00001 DB - PRIME DP - Unbound Medicine ER -