Skip to main content
Erschienen in: Investigational New Drugs 5/2014

01.10.2014 | PRECLINICAL STUDIES

Growth hormone-releasing hormone antagonists abolish the transactivation of human epidermal growth factor receptors in advanced prostate cancer models

verfasst von: Laura Muñoz-Moreno, M. Isabel Arenas, M. José Carmena, Andrew V. Schally, Juan C. Prieto, Ana M. Bajo

Erschienen in: Investigational New Drugs | Ausgabe 5/2014

Einloggen, um Zugang zu erhalten

Summary

Growth hormone-releasing hormone (GHRH) and its receptors have been implicated in a variety of cellular phenotypes related with tumorigenesis process. Human epidermal growth factor receptor family members (HER) such as EGFR and HER2 are involved in mitogenic signaling pathways implicated in the progression of prostate cancer. We analyzed the cross-talk between GHRH and EGF receptors in prostate cancer. The effects of GHRH in HER signaling were evaluated on human androgen-independent PC3 prostate cancer cells in vitro and GHRH antagonist in vitro and in nude mice xenografts of PC3 prostate cancer. Time-course studies indicated that GHRH had a stimulatory activity on both the expression of EGFR and HER2. GHRH analogues, JMR-132 and JV-1–38, endowed with antagonistic activity for GHRH receptors, abrogated the response to GHRH in PC3 cells. GHRH stimulated a rapid ligand-independent activation of EGFR and HER2 involving at least cAMP/PKA and Src family signaling pathways. GHRH also stimulated a slow ligand-dependent activation of EGFR and HER2 involving an extracellular pathway with an important role for ADAM. Preliminary results also revealed an increase of mRNA for GHRH and GHRH receptor induced by EGF. The inhibition of tumor growth, in vivo, was associated with a substantial reduction in the expression of mRNA and protein levels of EGFR and HER2 in the tumors. GHRH antagonist JV-1–38, significantly decreased the phosphorylated Src levels. The cross-talk between HER and GHRH-R may be impeded by combining drugs acting upon GHRH receptors and HER family members in human advanced prostate cancer.
Literatur
1.
2.
Zurück zum Zitat Baena E, Shao Z, Linn DE, Glass K, Hamblen MJ, Fujiwara Y et al (2013) ETV1 directs androgen metabolism and confers aggressive prostate cancer in targeted mice and patients. Genes Dev 27:683–698PubMedCentralCrossRefPubMed Baena E, Shao Z, Linn DE, Glass K, Hamblen MJ, Fujiwara Y et al (2013) ETV1 directs androgen metabolism and confers aggressive prostate cancer in targeted mice and patients. Genes Dev 27:683–698PubMedCentralCrossRefPubMed
3.
Zurück zum Zitat Kuzumaki N, Suzuki A, Narita M, Hosoya T, Nagasawa A, Imai S et al (2012) Multiple analyses of G-protein coupled receptor (GPCR) expression in the development of gefitinib-resistance in transforming non-small-cell lung cancer. PLoS One 7:e44368PubMedCentralCrossRefPubMed Kuzumaki N, Suzuki A, Narita M, Hosoya T, Nagasawa A, Imai S et al (2012) Multiple analyses of G-protein coupled receptor (GPCR) expression in the development of gefitinib-resistance in transforming non-small-cell lung cancer. PLoS One 7:e44368PubMedCentralCrossRefPubMed
4.
Zurück zum Zitat Schally AV, Varga JL, Engel JB (2008) Antagonists of growth-hormone-releasing hormone: an emerging new therapy for cancer. Nat Clin Pract Endocrinol Metab 4:33–43CrossRefPubMed Schally AV, Varga JL, Engel JB (2008) Antagonists of growth-hormone-releasing hormone: an emerging new therapy for cancer. Nat Clin Pract Endocrinol Metab 4:33–43CrossRefPubMed
5.
Zurück zum Zitat Havt A, Schally AV, Halmos G, Varga JL, Toller GL, Horvath JE et al (2005) The expression of the pituitary growth hormone-releasing hormone receptor and its splice variants in normal and neoplastic human tissues. Proc Natl Acad Sci U S A 102:17424–17429PubMedCentralCrossRefPubMed Havt A, Schally AV, Halmos G, Varga JL, Toller GL, Horvath JE et al (2005) The expression of the pituitary growth hormone-releasing hormone receptor and its splice variants in normal and neoplastic human tissues. Proc Natl Acad Sci U S A 102:17424–17429PubMedCentralCrossRefPubMed
6.
Zurück zum Zitat Rick FG, Schally AV, Szalontay L, Block NL, Szepeshazi K, Nadji M et al (2012) Antagonists of growth hormone-releasing hormone inhibit growth of androgen-independent prostate cancer through inactivation of ERK and Akt kinases. Proc Natl Acad Sci U S A 109:1655–1660PubMedCentralCrossRefPubMed Rick FG, Schally AV, Szalontay L, Block NL, Szepeshazi K, Nadji M et al (2012) Antagonists of growth hormone-releasing hormone inhibit growth of androgen-independent prostate cancer through inactivation of ERK and Akt kinases. Proc Natl Acad Sci U S A 109:1655–1660PubMedCentralCrossRefPubMed
7.
Zurück zum Zitat Stangelberger A, Schally AV, Djavan B (2008) New treatment approaches for prostate cancer based on peptide analogues. Eur Urol 53:890–900CrossRefPubMed Stangelberger A, Schally AV, Djavan B (2008) New treatment approaches for prostate cancer based on peptide analogues. Eur Urol 53:890–900CrossRefPubMed
8.
Zurück zum Zitat Garcia-Fernandez MO, Schally AV, Varga JL, Groot K, Busto R (2003) The expression of growth hormone-releasing hormone (GHRH) and its receptor splice variants in human breast cancer lines; the evaluation of signaling mechanisms in the stimulation of cell proliferation. Breast Cancer Res Treat 77:15–26CrossRefPubMed Garcia-Fernandez MO, Schally AV, Varga JL, Groot K, Busto R (2003) The expression of growth hormone-releasing hormone (GHRH) and its receptor splice variants in human breast cancer lines; the evaluation of signaling mechanisms in the stimulation of cell proliferation. Breast Cancer Res Treat 77:15–26CrossRefPubMed
9.
Zurück zum Zitat Kanashiro CA, Schally AV, Zarandi M, Hammann BD, Varga JL (2004) Suppression of growth of H-69 small cell lung carcinoma by antagonists of growth hormone releasing hormone and bombesin is associated with an inhibition of protein kinase C signaling. Int J Cancer 112:570–576CrossRefPubMed Kanashiro CA, Schally AV, Zarandi M, Hammann BD, Varga JL (2004) Suppression of growth of H-69 small cell lung carcinoma by antagonists of growth hormone releasing hormone and bombesin is associated with an inhibition of protein kinase C signaling. Int J Cancer 112:570–576CrossRefPubMed
10.
Zurück zum Zitat Muñoz-Moreno L, Arenas MI, Schally AV, Fernández-Martínez AB, Zarka E, González-Santander M et al (2013) Inhibitory effects of antagonists of growth hormone-releasing hormone on growth and invasiveness of PC3 human prostate cancer. Int J Cancer 132:755–765CrossRefPubMed Muñoz-Moreno L, Arenas MI, Schally AV, Fernández-Martínez AB, Zarka E, González-Santander M et al (2013) Inhibitory effects of antagonists of growth hormone-releasing hormone on growth and invasiveness of PC3 human prostate cancer. Int J Cancer 132:755–765CrossRefPubMed
11.
Zurück zum Zitat Prenzel N, Fischer OM, Streit S, Hart S, Ullrich A (2001) The epidermal growth factor receptor family as a central element for cellular signal transduction and diversification. Endocr Relat Cancer 8:11–31CrossRefPubMed Prenzel N, Fischer OM, Streit S, Hart S, Ullrich A (2001) The epidermal growth factor receptor family as a central element for cellular signal transduction and diversification. Endocr Relat Cancer 8:11–31CrossRefPubMed
12.
Zurück zum Zitat Sebastian S, Settleman J, Reshkin SJ, Azzariti A, Bellizzi A, Paradiso A (2006) The complexity of targeting EGFR signalling in cancer: from expression to turnover. Biochim Biophys Acta 1766:120–139PubMed Sebastian S, Settleman J, Reshkin SJ, Azzariti A, Bellizzi A, Paradiso A (2006) The complexity of targeting EGFR signalling in cancer: from expression to turnover. Biochim Biophys Acta 1766:120–139PubMed
13.
Zurück zum Zitat Di Lorenzo G, Tortora G, D’Armiento FP, De Rosa G, Staibano S, Autorino R et al (2002) Expression of epidermal growth factor receptor correlates with disease relapse and progression to androgen-independence in human prostate cancer. Clin Cancer Res 8:3438–3444PubMed Di Lorenzo G, Tortora G, D’Armiento FP, De Rosa G, Staibano S, Autorino R et al (2002) Expression of epidermal growth factor receptor correlates with disease relapse and progression to androgen-independence in human prostate cancer. Clin Cancer Res 8:3438–3444PubMed
14.
Zurück zum Zitat Berger R, Lin DI, Nieto M, Sicinska E, Garraway LA, Adams H et al (2006) Androgen-dependent regulation of Her-2/neu in prostate cancer cells. Cancer Res 66:5723–5728CrossRefPubMed Berger R, Lin DI, Nieto M, Sicinska E, Garraway LA, Adams H et al (2006) Androgen-dependent regulation of Her-2/neu in prostate cancer cells. Cancer Res 66:5723–5728CrossRefPubMed
15.
Zurück zum Zitat Delcourt N, Bockaert J, Marin P (2007) GPCR-jacking: from a new route in RTK signalling to a new concept in GPCR activation. Trends Pharmacol Sci 28:602–607CrossRefPubMed Delcourt N, Bockaert J, Marin P (2007) GPCR-jacking: from a new route in RTK signalling to a new concept in GPCR activation. Trends Pharmacol Sci 28:602–607CrossRefPubMed
16.
Zurück zum Zitat Sotomayor S, Carmena MJ, Schally AV, Sánchez-Chapado M, Prieto JC, Bajo AM (2007) Transactivation of HER2 by vasoactive intestinal peptide in experimental prostate cancer: antagonistic action of an analog of growth-hormone-releasing hormone. Int J Oncol 31:1223–1230PubMed Sotomayor S, Carmena MJ, Schally AV, Sánchez-Chapado M, Prieto JC, Bajo AM (2007) Transactivation of HER2 by vasoactive intestinal peptide in experimental prostate cancer: antagonistic action of an analog of growth-hormone-releasing hormone. Int J Oncol 31:1223–1230PubMed
17.
Zurück zum Zitat Sotomayor S, Muñoz-Moreno L, Carmena MJ, Schally AV, Sánchez-Chapado M, Prieto JC et al (2010) Regulation of her expression and transactivation in human prostate cancer cells by a targeted cytotoxic bombesin analog (AN-215) and a bombesin antagonist (RC-3095). Int J Cancer 127:1813–1822CrossRefPubMed Sotomayor S, Muñoz-Moreno L, Carmena MJ, Schally AV, Sánchez-Chapado M, Prieto JC et al (2010) Regulation of her expression and transactivation in human prostate cancer cells by a targeted cytotoxic bombesin analog (AN-215) and a bombesin antagonist (RC-3095). Int J Cancer 127:1813–1822CrossRefPubMed
19.
Zurück zum Zitat Araujo JC, Trudel GC, Paliwal P (2013) Long-term use of dasatinib in patients with metastatic castration-resistant prostate cancer after receiving the combination of dasatinib and docetaxel. Cancer Manag Res 6:25–30PubMedCentralCrossRefPubMed Araujo JC, Trudel GC, Paliwal P (2013) Long-term use of dasatinib in patients with metastatic castration-resistant prostate cancer after receiving the combination of dasatinib and docetaxel. Cancer Manag Res 6:25–30PubMedCentralCrossRefPubMed
20.
Zurück zum Zitat Asim M, Siddiqui IA, Hafeez BB, Baniahmad A, Mukhtar H (2008) Src kinase potentiates androgen receptor transactivation function and invasion of androgen-independent prostate cancer C4-2 cells. Oncogene 27:3596–3604CrossRefPubMed Asim M, Siddiqui IA, Hafeez BB, Baniahmad A, Mukhtar H (2008) Src kinase potentiates androgen receptor transactivation function and invasion of androgen-independent prostate cancer C4-2 cells. Oncogene 27:3596–3604CrossRefPubMed
21.
Zurück zum Zitat Eguchi S, Numaguchi K, Iwasaki H, Matsumoto T, Yamakawa T, Utsunomiya H et al (1998) Calcium-dependent epidermal growth factor receptor transactivation mediates the angiotensin II-induced mitogen-activated protein kinase activation in vascular smooth muscle cells. J Biol Chem 273:8890–8896CrossRefPubMed Eguchi S, Numaguchi K, Iwasaki H, Matsumoto T, Yamakawa T, Utsunomiya H et al (1998) Calcium-dependent epidermal growth factor receptor transactivation mediates the angiotensin II-induced mitogen-activated protein kinase activation in vascular smooth muscle cells. J Biol Chem 273:8890–8896CrossRefPubMed
22.
Zurück zum Zitat Liebmann C (2011) EGF receptor activation by GPCRs: an universal pathway reveals different versions. Mol Cell Endocrinol 331:222–231CrossRefPubMed Liebmann C (2011) EGF receptor activation by GPCRs: an universal pathway reveals different versions. Mol Cell Endocrinol 331:222–231CrossRefPubMed
23.
Zurück zum Zitat Fernández-Martínez AB, Bajo AM, Isabel Arenas M, Sánchez-Chapado M, Prieto JC, Carmena MJ (2010) Vasoactive intestinal peptide (VIP) induces malignant transformation of the human prostate epithelial cell line RWPE-1. Cancer Lett 299:11–21CrossRefPubMed Fernández-Martínez AB, Bajo AM, Isabel Arenas M, Sánchez-Chapado M, Prieto JC, Carmena MJ (2010) Vasoactive intestinal peptide (VIP) induces malignant transformation of the human prostate epithelial cell line RWPE-1. Cancer Lett 299:11–21CrossRefPubMed
24.
Zurück zum Zitat Rozen S, Skaletsky H (2000) Primer3 on the WWW for general users and for biologist programmers. In: Krawetz S, Misener S (eds) Bioinformatics Methods and Protocols: Methods in Molecular Biology. Humana Press, New Jersey, pp 365–386 Rozen S, Skaletsky H (2000) Primer3 on the WWW for general users and for biologist programmers. In: Krawetz S, Misener S (eds) Bioinformatics Methods and Protocols: Methods in Molecular Biology. Humana Press, New Jersey, pp 365–386
25.
Zurück zum Zitat Carlsson J, Shen L, Xiang J, Xu J, Wei Q (2013) Tendencies for higher co-expression of EGFR and HER2 and downregulation of HER3 in prostate cancer lymph node metastases compared with corresponding primary tumors. Oncol Lett 5:208–214PubMedCentralPubMed Carlsson J, Shen L, Xiang J, Xu J, Wei Q (2013) Tendencies for higher co-expression of EGFR and HER2 and downregulation of HER3 in prostate cancer lymph node metastases compared with corresponding primary tumors. Oncol Lett 5:208–214PubMedCentralPubMed
26.
Zurück zum Zitat Rezaiemanesh A, Majidi J, Baradaran B, Movasaghpour A, Nakhlband A, Barar J et al (2010) Impacts of anti-EGFR monoclonal antibody in prostate cancer PC3 cells. Hum Antibodies 19:63–70PubMed Rezaiemanesh A, Majidi J, Baradaran B, Movasaghpour A, Nakhlband A, Barar J et al (2010) Impacts of anti-EGFR monoclonal antibody in prostate cancer PC3 cells. Hum Antibodies 19:63–70PubMed
27.
Zurück zum Zitat Bartlett JM, Brawley D, Grigor K, Munro AF, Dunne B, Edwards J (2005) Type I receptor tyrosine kinases are associated with hormone escape in prostate cancer. J Pathol 205:522–529CrossRefPubMed Bartlett JM, Brawley D, Grigor K, Munro AF, Dunne B, Edwards J (2005) Type I receptor tyrosine kinases are associated with hormone escape in prostate cancer. J Pathol 205:522–529CrossRefPubMed
28.
Zurück zum Zitat Valdehita A, Bajo AM, Schally AV, Varga JL, Carmena MJ, Prieto JC (2009) Vasoactive intestinal peptide (VIP) induces transactivation of EGFR and HER2 in human breast cancer cells. Mol Cell Endocrinol 302:41–48CrossRefPubMed Valdehita A, Bajo AM, Schally AV, Varga JL, Carmena MJ, Prieto JC (2009) Vasoactive intestinal peptide (VIP) induces transactivation of EGFR and HER2 in human breast cancer cells. Mol Cell Endocrinol 302:41–48CrossRefPubMed
29.
Zurück zum Zitat De Heuvel E, Wallace L, Sharkey KA, Sigalet DL (2012) Glucagon-like peptide 2 induces vasoactive intestinal polypeptide expression in enteric neurons via phosphatidylinositol 3-kinase-γ signaling. Am J Physiol Endocrinol Metab 303:E994–E1005PubMedCentralCrossRefPubMed De Heuvel E, Wallace L, Sharkey KA, Sigalet DL (2012) Glucagon-like peptide 2 induces vasoactive intestinal polypeptide expression in enteric neurons via phosphatidylinositol 3-kinase-γ signaling. Am J Physiol Endocrinol Metab 303:E994–E1005PubMedCentralCrossRefPubMed
30.
Zurück zum Zitat Bertelsen LS, Barrett KE, Keely SJ (2004) Gs protein-coupled receptor agonists induce transactivation of the epidermal growth factor receptor in T84 cells: implications for epithelial secretory responses. J Biol Chem 279:6271–6279CrossRefPubMed Bertelsen LS, Barrett KE, Keely SJ (2004) Gs protein-coupled receptor agonists induce transactivation of the epidermal growth factor receptor in T84 cells: implications for epithelial secretory responses. J Biol Chem 279:6271–6279CrossRefPubMed
31.
Zurück zum Zitat Majeed N, Blouin MJ, Kaplan-Lefko PJ, Barry-Shaw J, Greenberg NM, Gaudreau P et al (2005) A germ line mutation that delays prostate cancer progression and prolongs survival in a murine prostate cancer model. Oncogene 24:4736–4740CrossRefPubMed Majeed N, Blouin MJ, Kaplan-Lefko PJ, Barry-Shaw J, Greenberg NM, Gaudreau P et al (2005) A germ line mutation that delays prostate cancer progression and prolongs survival in a murine prostate cancer model. Oncogene 24:4736–4740CrossRefPubMed
32.
Zurück zum Zitat Barabutis N, Schally AV (2008) Knocking down gene expression for growth hormone-releasing hormone inhibits proliferation of human cancer cell lines. Br J Cancer 98:1790–1796PubMedCentralCrossRefPubMed Barabutis N, Schally AV (2008) Knocking down gene expression for growth hormone-releasing hormone inhibits proliferation of human cancer cell lines. Br J Cancer 98:1790–1796PubMedCentralCrossRefPubMed
33.
Zurück zum Zitat Rekasi Z, Czompoly T, Schally AV, Boldizsar F, Varga JL, Zarandi M et al (2005) Antagonist of growth hormone-releasing hormone induces apoptosis in LNCaP human prostate cancer cells through a Ca2+-dependent pathway. Proc Natl Acad Sci U S A 102:3435–3440PubMedCentralCrossRefPubMed Rekasi Z, Czompoly T, Schally AV, Boldizsar F, Varga JL, Zarandi M et al (2005) Antagonist of growth hormone-releasing hormone induces apoptosis in LNCaP human prostate cancer cells through a Ca2+-dependent pathway. Proc Natl Acad Sci U S A 102:3435–3440PubMedCentralCrossRefPubMed
34.
Zurück zum Zitat Halmos G, Schally AV, Czompoly T, Krupa M, Varga JL, Rekasi Z (2002) Expression of growth hormone-releasing hormone and its receptor splice variants in human prostate cancer. J Clin Endocrinol Metab 87:707–4714CrossRef Halmos G, Schally AV, Czompoly T, Krupa M, Varga JL, Rekasi Z (2002) Expression of growth hormone-releasing hormone and its receptor splice variants in human prostate cancer. J Clin Endocrinol Metab 87:707–4714CrossRef
35.
Zurück zum Zitat Csernus V, Schally AV, Groot K (1999) Antagonistic analogs of growth hormone releasing hormone (GHRH) inhibit cyclic AMP production of human cancer cell lines in vitro. Peptides 20:843–850CrossRefPubMed Csernus V, Schally AV, Groot K (1999) Antagonistic analogs of growth hormone releasing hormone (GHRH) inhibit cyclic AMP production of human cancer cell lines in vitro. Peptides 20:843–850CrossRefPubMed
36.
Zurück zum Zitat Delcourt N, Thouvenot E, Chanrion B, Galéotti N, Jouin P, Bockaert J, Marin P (2007) PACAP type I receptor transactivation is essential for IGF-1 receptor signalling and antiapoptotic activity in neurons. EMBO J 26:1542–1551PubMedCentralCrossRefPubMed Delcourt N, Thouvenot E, Chanrion B, Galéotti N, Jouin P, Bockaert J, Marin P (2007) PACAP type I receptor transactivation is essential for IGF-1 receptor signalling and antiapoptotic activity in neurons. EMBO J 26:1542–1551PubMedCentralCrossRefPubMed
38.
Zurück zum Zitat Rozengurt E (2007) Mitogenic signaling pathways induced by G protein-coupled receptors. J Cell Physiol 213:589–602CrossRefPubMed Rozengurt E (2007) Mitogenic signaling pathways induced by G protein-coupled receptors. J Cell Physiol 213:589–602CrossRefPubMed
39.
Zurück zum Zitat El Zein N, D’Hondt S, Sariban E (2010) Crosstalks between the receptors tyrosine kinase EGFR and TrkA and the GPCR, FPR, in human monocytes are essential for receptors-mediated cell activation. Cell Signal 22:1437–1447CrossRefPubMed El Zein N, D’Hondt S, Sariban E (2010) Crosstalks between the receptors tyrosine kinase EGFR and TrkA and the GPCR, FPR, in human monocytes are essential for receptors-mediated cell activation. Cell Signal 22:1437–1447CrossRefPubMed
40.
Zurück zum Zitat Higashiyama S, Nanba D, Nakayama H, Inoue H, Fukuda S (2011) Ectodomain shedding and remnant peptide signalling of EGFRs and their ligands. J Biochem 150:15–22CrossRefPubMed Higashiyama S, Nanba D, Nakayama H, Inoue H, Fukuda S (2011) Ectodomain shedding and remnant peptide signalling of EGFRs and their ligands. J Biochem 150:15–22CrossRefPubMed
41.
Zurück zum Zitat Xiao LJ, Lin P, Lin F, Liu X, Qin W, Zou HF et al (2012) ADAM17 targets MMP-2 and MMP-9 via EGFR-MEK-ERK pathway activation to promote prostate cancer cell invasion. Int J Oncol 40:1714–1724PubMed Xiao LJ, Lin P, Lin F, Liu X, Qin W, Zou HF et al (2012) ADAM17 targets MMP-2 and MMP-9 via EGFR-MEK-ERK pathway activation to promote prostate cancer cell invasion. Int J Oncol 40:1714–1724PubMed
42.
Zurück zum Zitat Prenzel N, Zwick E, Daub H, Leserer M, Abraham R, Wallasch C et al (1999) EGF receptor transactivation by G-protein-coupled receptors requires metalloproteinase cleavage of proHB-EGF. Nature 402:884–888PubMed Prenzel N, Zwick E, Daub H, Leserer M, Abraham R, Wallasch C et al (1999) EGF receptor transactivation by G-protein-coupled receptors requires metalloproteinase cleavage of proHB-EGF. Nature 402:884–888PubMed
43.
Zurück zum Zitat Fischer OM, Hart S, Gschwind A, Ullrich A (2003) EGFR signal transactivation in cancer cells. Biochem Soc Trans 31:1203–1208CrossRefPubMed Fischer OM, Hart S, Gschwind A, Ullrich A (2003) EGFR signal transactivation in cancer cells. Biochem Soc Trans 31:1203–1208CrossRefPubMed
44.
Zurück zum Zitat Edwards DR, Handsley MM, Pennington CJ (2008) The ADAM metalloproteinases. Mol Aspects Med 29:258–289CrossRefPubMed Edwards DR, Handsley MM, Pennington CJ (2008) The ADAM metalloproteinases. Mol Aspects Med 29:258–289CrossRefPubMed
45.
Zurück zum Zitat Maretzky T, Zhou W, Huang XY, Blobel CP (2011) A transforming Src mutant increases the bioavailability of EGFR ligands via stimulation of the cell-surface metalloproteinase ADAM17. Oncogene 30:611–618PubMedCentralCrossRefPubMed Maretzky T, Zhou W, Huang XY, Blobel CP (2011) A transforming Src mutant increases the bioavailability of EGFR ligands via stimulation of the cell-surface metalloproteinase ADAM17. Oncogene 30:611–618PubMedCentralCrossRefPubMed
46.
Zurück zum Zitat Yen L, Benlimame N, Nie ZR, Xiao D, Wang T, Al Moustafa AE et al (2002) Differential regulation of tumor angiogenesis by distinct ErbB homo- and heterodimers. Mol Biol Cell 13:4029–4044PubMedCentralCrossRefPubMed Yen L, Benlimame N, Nie ZR, Xiao D, Wang T, Al Moustafa AE et al (2002) Differential regulation of tumor angiogenesis by distinct ErbB homo- and heterodimers. Mol Biol Cell 13:4029–4044PubMedCentralCrossRefPubMed
47.
Zurück zum Zitat Wen Y, Hu MC, Makino K, Spohn B, Bartholomeusz G, Yan DH et al (2000) HER-2/neu promotes androgen-independent survival and growth of prostate cancer cells through the Akt pathway. Cancer Res 60:6841–6845PubMed Wen Y, Hu MC, Makino K, Spohn B, Bartholomeusz G, Yan DH et al (2000) HER-2/neu promotes androgen-independent survival and growth of prostate cancer cells through the Akt pathway. Cancer Res 60:6841–6845PubMed
48.
Zurück zum Zitat Mira E, Lacalle RA, González MA, Gómez-Moutón C, Abad JL, Bernad A et al (2001) A role for chemokine receptor transactivation in growth factor signaling. EMBO Rep 2:151–156PubMedCentralCrossRefPubMed Mira E, Lacalle RA, González MA, Gómez-Moutón C, Abad JL, Bernad A et al (2001) A role for chemokine receptor transactivation in growth factor signaling. EMBO Rep 2:151–156PubMedCentralCrossRefPubMed
49.
Zurück zum Zitat Buchholz S, Schally AV, Engel JB, Hohla F, Heinrich E, Koester F et al (2007) Potentiation of mammary cancer inhibition by combination of antagonists of growth hormone-releasing hormone with docetaxel. Proc Natl Acad Sci U S A 104:1943–1946PubMedCentralCrossRefPubMed Buchholz S, Schally AV, Engel JB, Hohla F, Heinrich E, Koester F et al (2007) Potentiation of mammary cancer inhibition by combination of antagonists of growth hormone-releasing hormone with docetaxel. Proc Natl Acad Sci U S A 104:1943–1946PubMedCentralCrossRefPubMed
50.
Zurück zum Zitat Xu W, Marcu M, Yuan X, Mimnaugh E, Patterson C, Neckers L (2002) Chaperone-dependent E3 ubiquitin ligase CHIP mediates a degradative pathway for c-ErbB2/Neu. Proc Natl Acad Sci U S A 99:12847–12852PubMedCentralCrossRefPubMed Xu W, Marcu M, Yuan X, Mimnaugh E, Patterson C, Neckers L (2002) Chaperone-dependent E3 ubiquitin ligase CHIP mediates a degradative pathway for c-ErbB2/Neu. Proc Natl Acad Sci U S A 99:12847–12852PubMedCentralCrossRefPubMed
51.
Zurück zum Zitat Citri A, Gan J, Mosesson Y, Vereb G, Szollosi J, Yarden Y (2004) Hsp90 restrains ErbB-2/HER2 signalling by limiting heterodimer formation. EMBO Rep 5:1165–1170PubMedCentralCrossRefPubMed Citri A, Gan J, Mosesson Y, Vereb G, Szollosi J, Yarden Y (2004) Hsp90 restrains ErbB-2/HER2 signalling by limiting heterodimer formation. EMBO Rep 5:1165–1170PubMedCentralCrossRefPubMed
52.
Zurück zum Zitat Hendriks BS, Opresko LK, Wiley HS, Lauffenburger D (2003) Quantitative analysis of HER2-mediated effects on HER2 and epidermal growth factor receptor endocytosis: distribution of homo- and heterodimers depends on relative HER2 levels. J Biol Chem 278:23343–23351CrossRefPubMed Hendriks BS, Opresko LK, Wiley HS, Lauffenburger D (2003) Quantitative analysis of HER2-mediated effects on HER2 and epidermal growth factor receptor endocytosis: distribution of homo- and heterodimers depends on relative HER2 levels. J Biol Chem 278:23343–23351CrossRefPubMed
Metadaten
Titel
Growth hormone-releasing hormone antagonists abolish the transactivation of human epidermal growth factor receptors in advanced prostate cancer models
verfasst von
Laura Muñoz-Moreno
M. Isabel Arenas
M. José Carmena
Andrew V. Schally
Juan C. Prieto
Ana M. Bajo
Publikationsdatum
01.10.2014
Verlag
Springer US
Erschienen in
Investigational New Drugs / Ausgabe 5/2014
Print ISSN: 0167-6997
Elektronische ISSN: 1573-0646
DOI
https://doi.org/10.1007/s10637-014-0131-4

Weitere Artikel der Ausgabe 5/2014

Investigational New Drugs 5/2014 Zur Ausgabe

Erhöhtes Risiko fürs Herz unter Checkpointhemmer-Therapie

28.05.2024 Nebenwirkungen der Krebstherapie Nachrichten

Kardiotoxische Nebenwirkungen einer Therapie mit Immuncheckpointhemmern mögen selten sein – wenn sie aber auftreten, wird es für Patienten oft lebensgefährlich. Voruntersuchung und Monitoring sind daher obligat.

Costims – das nächste heiße Ding in der Krebstherapie?

28.05.2024 Onkologische Immuntherapie Nachrichten

„Kalte“ Tumoren werden heiß – CD28-kostimulatorische Antikörper sollen dies ermöglichen. Am besten könnten diese in Kombination mit BiTEs und Checkpointhemmern wirken. Erste klinische Studien laufen bereits.

Perioperative Checkpointhemmer-Therapie verbessert NSCLC-Prognose

28.05.2024 NSCLC Nachrichten

Eine perioperative Therapie mit Nivolumab reduziert das Risiko für Rezidive und Todesfälle bei operablem NSCLC im Vergleich zu einer alleinigen neoadjuvanten Chemotherapie um über 40%. Darauf deuten die Resultate der Phase-3-Studie CheckMate 77T.

Positiver FIT: Die Ursache liegt nicht immer im Dickdarm

27.05.2024 Blut im Stuhl Nachrichten

Immunchemischer Stuhltest positiv, Koloskopie negativ – in solchen Fällen kann die Blutungsquelle auch weiter proximal sitzen. Ein Forschungsteam hat nachgesehen, wie häufig und in welchen Lokalisationen das der Fall ist.

Update Onkologie

Bestellen Sie unseren Fach-Newsletter und bleiben Sie gut informiert.