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Article

P38 MAPK Promotes Migration and Metastatic Activity of BRAF Mutant Melanoma Cells by Inducing Degradation of PMCA4b

by
Randa Naffa
1,
Lisa Vogel
2,
Luca Hegedűs
3,
Katalin Pászty
4,
Sarolta Tóth
5,
Kornélia Kelemen
1,
Neha Singh
6,
Attila Reményi
6,
Enikő Kállay
7,
Mihály Cserepes
8,
József Tóvári
8,
Michael Grusch
2 and
Ágnes Enyedi
1,*
1
2nd Institute of Pathology, Semmelweis University, H-1091 Budapest, Hungary
2
Institute of Cancer Research, Department of Medicine I, Medical University of Vienna, Vienna A-1090, Austria
3
Department of Thoracic Surgery, Ruhrlandklinik, University Clinic, D-45239 Essen, Germany
4
Department of Biophysics and Radiation Biology, Semmelweis University, H-1094 Budapest, Hungary
5
Department of Anatomy, Cell and Developmental Biology, Eötvös Loránd University, H-1117 Budapest, Hungary
6
Institute of Organic Chemistry, Research Centre for Natural Sciences, HAS, H-1117 Budapest, Hungary
7
Institute of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna A-1090, Austria
8
National Institute of Oncology, Department of Experimental Pharmacology, H-1122 Budapest, Hungary
*
Author to whom correspondence should be addressed.
Cells 2020, 9(5), 1209; https://doi.org/10.3390/cells9051209
Submission received: 10 April 2020 / Revised: 10 May 2020 / Accepted: 11 May 2020 / Published: 13 May 2020
(This article belongs to the Section Cell Signaling)
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Abstract

Metastatic melanoma is the most aggressive type of skin cancer. Previously, we identified the plasma membrane Ca2+ pump isoform 4b (PMCA4b or ATP2B4) as a putative metastasis suppressor in BRAF mutant melanoma cells. Metastasis suppressors are often downregulated in cancer, therefore, it is important to identify the pathways involved in their degradation. Here, we studied the role of p38 MAPK in PMCA4b degradation and its effect on melanoma metastasis. We found that activation of p38 MAPK induces internalization and subsequent degradation of PMCA4b through the endo/lysosomal system that contributes to the low PMCA4b steady-state protein level of BRAF mutant melanoma cells. Moreover, BRAF wild type cell models including a doxycycline-inducible HEK cell system revealed that p38 MAPK is a universal modulator of PMCA4b endocytosis. Inhibition of the p38 MAPK pathway markedly reduced migration, colony formation and metastatic activity of BRAF mutant cells in vitro partially through an increase in PMCA4b and a decrease in β4 integrin abundance. In conclusion, our data suggest that the p38 MAPK pathway plays a key role in PMCA4b degradation and inhibition of this pathway—by increasing the stability of PMCA4b—may provide a potential therapeutic target for inhibition of melanoma progression and metastasis.
Keywords: plasma membrane Ca2+ATPase isoform 4b; p38 mitogen-activated protein kinase (MAPK); endocytosis; calcium signaling; BRAF mutant melanoma; metastasis plasma membrane Ca2+ATPase isoform 4b; p38 mitogen-activated protein kinase (MAPK); endocytosis; calcium signaling; BRAF mutant melanoma; metastasis
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MDPI and ACS Style

Naffa, R.; Vogel, L.; Hegedűs, L.; Pászty, K.; Tóth, S.; Kelemen, K.; Singh, N.; Reményi, A.; Kállay, E.; Cserepes, M.; et al. P38 MAPK Promotes Migration and Metastatic Activity of BRAF Mutant Melanoma Cells by Inducing Degradation of PMCA4b. Cells 2020, 9, 1209. https://doi.org/10.3390/cells9051209

AMA Style

Naffa R, Vogel L, Hegedűs L, Pászty K, Tóth S, Kelemen K, Singh N, Reményi A, Kállay E, Cserepes M, et al. P38 MAPK Promotes Migration and Metastatic Activity of BRAF Mutant Melanoma Cells by Inducing Degradation of PMCA4b. Cells. 2020; 9(5):1209. https://doi.org/10.3390/cells9051209

Chicago/Turabian Style

Naffa, Randa, Lisa Vogel, Luca Hegedűs, Katalin Pászty, Sarolta Tóth, Kornélia Kelemen, Neha Singh, Attila Reményi, Enikő Kállay, Mihály Cserepes, and et al. 2020. "P38 MAPK Promotes Migration and Metastatic Activity of BRAF Mutant Melanoma Cells by Inducing Degradation of PMCA4b" Cells 9, no. 5: 1209. https://doi.org/10.3390/cells9051209

APA Style

Naffa, R., Vogel, L., Hegedűs, L., Pászty, K., Tóth, S., Kelemen, K., Singh, N., Reményi, A., Kállay, E., Cserepes, M., Tóvári, J., Grusch, M., & Enyedi, Á. (2020). P38 MAPK Promotes Migration and Metastatic Activity of BRAF Mutant Melanoma Cells by Inducing Degradation of PMCA4b. Cells, 9(5), 1209. https://doi.org/10.3390/cells9051209

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