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Pietilä I, Van Mourik D, Tamelander A, Kriz V, Claesson-Welsh L, Tengholm A, Welsh M. Temporal Dynamics of VEGFA-Induced VEGFR2/FAK Co-Localization Depend on SHB. Cells 2019; 8:cells8121645. [PMID: 31847469 PMCID: PMC6953046 DOI: 10.3390/cells8121645] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 12/12/2019] [Accepted: 12/13/2019] [Indexed: 12/18/2022] Open
Abstract
Focal adhesion kinase (FAK) is essential for vascular endothelial growth factor-A (VEGFA)/VEGF receptor-2 (VEGFR2)-stimulated angiogenesis and vascular permeability. We have previously noted that presence of the Src homology-2 domain adapter protein B (SHB) is of relevance for VEGFA-stimulated angiogenesis in a FAK-dependent manner. The current study was conducted in order address the temporal dynamics of co-localization between these components in HEK293 and primary lung endothelial cells (EC) by total internal reflection fluorescence microscopy (TIRF). An early (<2.5 min) VEGFA-induced increase in VEGFR2 co-localization with SHB was dependent on tyrosine 1175 in VEGFR2. VEGFA also enhanced SHB co-localization with FAK. FAK co-localization with VEGFR2 was dependent on SHB since it was significantly lower in SHB deficient EC after VEGFA addition. Absence of SHB also resulted in a gradual decline of VEGFR2 co-localization with FAK under basal (prior to VEGFA addition) conditions. A similar basal response was observed with expression of the Y1175F-VEGFR2 mutant in wild type EC. The distribution of focal adhesions in SHB-deficient EC was altered with a primarily perinuclear location. These live cell data implicate SHB as a key component regulating FAK activity in response to VEGFA/VEGFR2.
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Affiliation(s)
- Ilkka Pietilä
- Department of Medical Cell Biology, Uppsala University, Box 571, 75123 Uppsala, Sweden; (I.P.); (D.V.M.); (A.T.); (A.T.)
- Present address: Department of Immunology, Genetics and Pathology, Uppsala University, 75108 Uppsala, Sweden
| | - Djenolan Van Mourik
- Department of Medical Cell Biology, Uppsala University, Box 571, 75123 Uppsala, Sweden; (I.P.); (D.V.M.); (A.T.); (A.T.)
| | - Andreas Tamelander
- Department of Medical Cell Biology, Uppsala University, Box 571, 75123 Uppsala, Sweden; (I.P.); (D.V.M.); (A.T.); (A.T.)
| | - Vitezslav Kriz
- Institute of Molecular Genetics of the CAS, 14220 Prague, Czech Republic;
| | - Lena Claesson-Welsh
- Department of Immunology, Genetics and Pathology, Uppsala University, 75108 Uppsala, Sweden;
| | - Anders Tengholm
- Department of Medical Cell Biology, Uppsala University, Box 571, 75123 Uppsala, Sweden; (I.P.); (D.V.M.); (A.T.); (A.T.)
| | - Michael Welsh
- Department of Medical Cell Biology, Uppsala University, Box 571, 75123 Uppsala, Sweden; (I.P.); (D.V.M.); (A.T.); (A.T.)
- Correspondence: ; Tel.: +46-184-714-447
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Li X, Singh K, Luo Z, Mejia-Cordova M, Jamalpour M, Lindahl B, Zhang G, Sandler S, Welsh M. Pro-tumoral immune cell alterations in wild type and Shb-deficient mice in response to 4T1 breast carcinomas. Oncotarget 2018; 9:18720-18733. [PMID: 29721156 PMCID: PMC5922350 DOI: 10.18632/oncotarget.24643] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 02/21/2018] [Indexed: 01/21/2023] Open
Abstract
To assess mechanisms responsible for breast carcinoma metastasis, 4T1 breast carcinomas were grown orthotopically in wild type or Shb knockout mice. Tumor growth, metastasis, vascular characteristics and immune cell properties were analyzed. Absence of Shb did not affect tumor growth although it increased lung metastasis. Shb knockout mouse tumors showed decreased redness and less developed vascular plexa located at the periphery of the tumors. No difference in overall tumor vascular density, leakage or pericyte coverage was noted between the genotypes although the average vessel size was smaller in the knockout. Tumors induced an increase of CD11b+ cells in spleen, lymph node, thymus, bone marrow and blood. Numbers of Shb knockout CD11b/CD8+ cells were decreased in lymph nodes and bone marrow of tumor bearing mice. Mice with tumors had reduced numbers of CD4+ lymphocytes in blood/lymphoid organs, whereas in most of these locations the proportion of CD4+ cells co-expressing FoxP3 was increased, suggesting a relative increase in Treg cells. This finding was reinforced by increased blood interleukin-35 (IL-35) in wild type tumor bearing mice. Shb knockout blood showed in addition an increased proportion of IL-35 expressing Treg cells, supporting the notion that absence of Shb further promotes tumor evasion from immune cell recognition. This could explain the increased number of lung metastases observed under these conditions. In conclusion, 4T1 tumors alter immune cell responses that promote tumor expansion, metastasis and escape from T cell recognition in an Shb dependent manner.
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Affiliation(s)
- Xiujuan Li
- Department of Medical Cell Biology, Uppsala University, Uppsala 75123, Sweden.,Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou 215123, China
| | - Kailash Singh
- Department of Medical Cell Biology, Uppsala University, Uppsala 75123, Sweden
| | - Zhengkang Luo
- Department of Medical Cell Biology, Uppsala University, Uppsala 75123, Sweden
| | | | - Maria Jamalpour
- Department of Medical Cell Biology, Uppsala University, Uppsala 75123, Sweden
| | - Björn Lindahl
- Department of Medical Cell Biology, Uppsala University, Uppsala 75123, Sweden
| | - Ganlin Zhang
- Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala 75123, Sweden
| | - Stellan Sandler
- Department of Medical Cell Biology, Uppsala University, Uppsala 75123, Sweden
| | - Michael Welsh
- Department of Medical Cell Biology, Uppsala University, Uppsala 75123, Sweden
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Welsh M, Jamalpour M, Zang G, Åkerblom B. The role of the Src Homology-2 domain containing protein B (SHB) in β cells. J Mol Endocrinol 2016; 56:R21-31. [PMID: 26489764 DOI: 10.1530/jme-15-0228] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/20/2015] [Indexed: 12/17/2022]
Abstract
This review will describe the SH2-domain signaling protein Src Homology-2 domain containing protein B (SHB) and its role in various physiological processes relating in particular to glucose homeostasis and β cell function. SHB operates downstream of several tyrosine kinase receptors and assembles signaling complexes in response to receptor activation by interacting with other signaling proteins via its other domains (proline-rich, phosphotyrosine-binding and tyrosine-phosphorylation sites). The subsequent responses are context-dependent. Absence of Shb in mice has been found to exert effects on hematopoiesis, angiogenesis and glucose metabolism. Specifically, first-phase insulin secretion in response to glucose was impaired and this effect was related to altered characteristics of focal adhesion kinase activation modulating signaling through Akt, ERK, β catenin and cAMP. It is believed that SHB plays a role in integrating adaptive responses to various stimuli by simultaneously modulating cellular responses in different cell-types, thus playing a role in maintaining physiological homeostasis.
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Affiliation(s)
- Michael Welsh
- Department of Medical Cell BiologyUppsala University, PO Box 571, Husargatan 3, SE-75123 Uppsala, Sweden
| | - Maria Jamalpour
- Department of Medical Cell BiologyUppsala University, PO Box 571, Husargatan 3, SE-75123 Uppsala, Sweden
| | - Guangxiang Zang
- Department of Medical Cell BiologyUppsala University, PO Box 571, Husargatan 3, SE-75123 Uppsala, Sweden
| | - Björn Åkerblom
- Department of Medical Cell BiologyUppsala University, PO Box 571, Husargatan 3, SE-75123 Uppsala, Sweden
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