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    Marilyn Farquhar

    TitleEmeritus Professor
    SchoolUniversity of California, San Diego
    DepartmentCellular and Molecular Medicine
    Address9500 Gilman Drive #0651
    CA La Jolla 92093
    Phone858-534-7711
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      Collapse Overview 
      Collapse Overview
      Our lab uses cell biology, bioinformatics and proteomics approaches to define signaling networks and to study the spatial regulation of signaling mediated by protein trafficking and targeting along the exocytic and endocytic pathways. Emphasis is on trafficking and signaling events that regulate growth factor receptors and G protein coupled receptors controlling cell growth and proliferation. A second area of interest centers on defining the signaling and trafficking events regulating glomerular filtration and protein absorption by the kidney and on pinpointing the molecular defects in these processes that occur in kidney diseases associated with proteinuria.

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      JEOL JEM-1400Plus Transmission Electron Microscope
      NIH S10OD023527May 1, 2017 - Apr 30, 2018
      Role: Principal Investigator
      FEI Tecnai G2 Spirit BioTWIN Transmission Electron Microscope
      NIH/NCRR S10RR027744Jan 28, 2010 - Jan 27, 2011
      Role: Principal Investigator
      Spatial Regulation of RGS and G Protein Signaling
      NIH/NCI R01CA100768Apr 17, 2003 - Jan 31, 2020
      Role: Principal Investigator
      Discovery and Development of Therapeutic Genes for CHF
      NIH P01HL066941Sep 29, 2000 - Jun 30, 2018
      Role: Co-Investigator
      Predoctoral and Postdoctoral Training in Cancer Cell Biology
      NIH/NCI T32CA067754Sep 25, 1995 - Jun 30, 2022
      Role: Principal Investigator
      SIGNALING IN MEMBRANE TRAFFIC AND CELL PROLIFERATION
      NIH/NCI P01CA058689Aug 25, 1993 - Mar 31, 2004
      Role: Principal Investigator
      Membrane Traffic in Normal and Transformed Cells
      NIH/NCI P01CA046128May 1, 1988 - Dec 31, 2007
      Role: Principal Investigator
      Glomerular Capillaries-- Normal and Pathologic
      NIH/NIDDK R37DK017724May 1, 1979 - May 31, 2017
      Role: Principal Investigator
      Glomerular Capillaries-- Normal and Pathologic
      NIH/NIDDK R01DK017724May 1, 1979 - Apr 30, 2009
      Role: Principal Investigator
      GLOMERULAR CAPILLARIES: NORMAL AND PATHOLOGIC
      NIH/NIADDK R01AM017724May 1, 1979 - Apr 30, 1989
      Role: Principal Investigator
      Hormone Secretion and Processing in Pituitary Cells
      NIH/NIDDK R01DK017780Jan 1, 1978 - Dec 31, 2011
      Role: Principal Investigator
      SECRETION AND GOLGI TRAFFIC IN PITUITARY AND OTHER CELLS
      NIH/NIDDK R37DK017780Jan 1, 1978 - Jun 30, 1996
      Role: Principal Investigator
      SECRETION AND GOLGI TRAFFIC IN PITUITARY AND OTHER CELLS
      NIH/NIADDK R01AM017780Jan 1, 1978 - Dec 31, 1987
      Role: Principal Investigator

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      Collapse Bibliographic 
      Collapse Publications
      Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help.
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      1. Aznar N, Patel A, Rohena CC, Dunkel Y, Joosen LP, Taupin V, Kufareva I, Farquhar M, Ghosh P. AMP-activated protein kinase fortifies epithelial tight junctions during energetic stress via its effector GIV/Girdin. Elife. 2016 Nov 04; 5. PMID: 27813479.
        View in: PubMed
      2. Gupta V, Bhandari D, Leyme A, Aznar N, Midde KK, Lo IC, Ear J, Niesman I, López-Sánchez I, Blanco-Canosa JB, von Zastrow M, Garcia-Marcos M, Farquhar M, Ghosh P. GIV/Girdin activates Gai and inhibits Gas via the same motif. Proc Natl Acad Sci U S A. 2016 Sep 27; 113(39):E5721-30. PMID: 27621449.
        View in: PubMed
      3. Bhandari D, Lopez-Sanchez I, To A, Lo IC, Aznar N, Leyme A, Gupta V, Niesman I, Maddox AL, Garcia-Marcos M, Farquhar M, Ghosh P. Cyclin-dependent kinase 5 activates guanine nucleotide exchange factor GIV/Girdin to orchestrate migration-proliferation dichotomy. Proc Natl Acad Sci U S A. 2015 Sep 1; 112(35):E4874-83. PMID: 26286990.
        View in: PubMed
      4. Lo IC, Gupta V, Midde KK, Taupin V, Lopez-Sanchez I, Kufareva I, Abagyan R, Randazzo PA, Farquhar M, Ghosh P. Activation of Gai at the Golgi by GIV/Girdin Imposes Finiteness in Arf1 Signaling. Dev Cell. 2015 Apr 20; 33(2):189-203. PMID: 25865347.
        View in: PubMed
      5. Garcia-Marcos M, Ghosh P, Farquhar M. GIV/Girdin transmits signals from multiple receptors by triggering trimeric G protein activation. J Biol Chem. 2015 Mar 13; 290(11):6697-704. PMID: 25605737.
        View in: PubMed
      6. Wang H, Misaki T, Taupin V, Eguchi A, Ghosh P, Farquhar M. GIV/Girdin Links Vascular Endothelial Growth Factor Signaling to Akt Survival Signaling in Podocytes Independent of Nephrin. J Am Soc Nephrol. 2015 Feb; 26(2):314-27. PMID: 25012178.
        View in: PubMed
      7. Declèves AE, Zolkipli Z, Satriano J, Wang L, Nakayama T, Rogac M, Le TP, Nortier JL, Farquhar M, Naviaux RK, Sharma K. Regulation of lipid accumulation by AMK-activated kinase in high fat diet-induced kidney injury. Kidney Int. 2014 Mar; 85(3):611-23. PMID: 24304883.
        View in: PubMed
      8. Farquhar M. Marilyn Farquhar: from the beginning by Sedwick Caitlin. J Cell Biol. 2013 Nov 25; 203(4):554-5. PMID: 24385482.
        View in: PubMed
      9. Shah M, Baterina OY, Taupin V, Farquhar M. ARH directs megalin to the endocytic recycling compartment to regulate its proteolysis and gene expression. J Cell Biol. 2013 Jul 8; 202(1):113-27. PMID: 23836931.
        View in: PubMed
      10. López-Sánchez I, Garcia-Marcos M, Mittal Y, Aznar N, Farquhar M, Ghosh P. Protein kinase C-theta (PKC?) phosphorylates and inhibits the guanine exchange factor, GIV/Girdin. Proc Natl Acad Sci U S A. 2013 Apr 2; 110(14):5510-5. PMID: 23509302.
        View in: PubMed
      11. Varsano T, Taupin V, Guo L, Baterina OY, Farquhar M. The PDZ protein GIPC regulates trafficking of the LPA1 receptor from APPL signaling endosomes and attenuates the cell's response to LPA. PLoS One. 2012; 7(11):e49227. PMID: 23145131.
        View in: PubMed
      12. Beas AO, Taupin V, Teodorof C, Nguyen LT, Garcia-Marcos M, Farquhar M. Gas promotes EEA1 endosome maturation and shuts down proliferative signaling through interaction with GIV (Girdin). Mol Biol Cell. 2012 Dec; 23(23):4623-34. PMID: 23051738.
        View in: PubMed
      13. Farquhar M. A man for all seasons: reflections on the life and legacy of George Palade. Annu Rev Cell Dev Biol. 2012; 28:1-28. PMID: 22831641.
        View in: PubMed
      14. Wasik AA, Polianskyte-Prause Z, Dong MQ, Shaw AS, Yates JR, Farquhar M, Lehtonen S. Septin 7 forms a complex with CD2AP and nephrin and regulates glucose transporter trafficking. Mol Biol Cell. 2012 Sep; 23(17):3370-9. PMID: 22809625.
        View in: PubMed
      15. Dvir H, Shah M, Girardi E, Guo L, Farquhar M, Zajonc DM. Atomic structure of the autosomal recessive hypercholesterolemia phosphotyrosine-binding domain in complex with the LDL-receptor tail. Proc Natl Acad Sci U S A. 2012 May 1; 109(18):6916-21. PMID: 22509010.
        View in: PubMed
      16. Garcia-Marcos M, Kietrsunthorn PS, Pavlova Y, Adia MA, Ghosh P, Farquhar M. Functional characterization of the guanine nucleotide exchange factor (GEF) motif of GIV protein reveals a threshold effect in signaling. Proc Natl Acad Sci U S A. 2012 Feb 7; 109(6):1961-6. PMID: 22308453.
        View in: PubMed
      17. Gallegos TF, Kouznetsova V, Kudlicka K, Sweeney DE, Bush KT, Willert K, Farquhar M, Nigam SK. A protein kinase A and Wnt-dependent network regulating an intermediate stage in epithelial tubulogenesis during kidney development. Dev Biol. 2012 Apr 1; 364(1):11-21. PMID: 22290330.
        View in: PubMed
      18. Fukasawa H, Obayashi H, Schmieder S, Lee J, Ghosh P, Farquhar M. Phosphorylation of podocalyxin (Ser415) Prevents RhoA and ezrin activation and disrupts its interaction with the actin cytoskeleton. Am J Pathol. 2011 Nov; 179(5):2254-65. PMID: 21945805.
        View in: PubMed
      19. Garcia-Marcos M, Kietrsunthorn PS, Wang H, Ghosh P, Farquhar M. G Protein binding sites on Calnuc (nucleobindin 1) and NUCB2 (nucleobindin 2) define a new class of G(alpha)i-regulatory motifs. J Biol Chem. 2011 Aug 12; 286(32):28138-49. PMID: 21653697.
        View in: PubMed
      20. Ghosh P, Garcia-Marcos M, Farquhar M. GIV/Girdin is a rheostat that fine-tunes growth factor signals during tumor progression. Cell Adh Migr. 2011 May-Jun; 5(3):237-48. PMID: 21546796.
        View in: PubMed
      21. Garcia-Marcos M, Ear J, Farquhar M, Ghosh P. A GDI (AGS3) and a GEF (GIV) regulate autophagy by balancing G protein activity and growth factor signals. Mol Biol Cell. 2011 Mar 1; 22(5):673-86. PMID: 21209316.
        View in: PubMed
      22. Schmid SL, Farquhar M. The Palade symposium: celebrating cell biology at its best. Mol Biol Cell. 2010 Jul 15; 21(14):2367-70. PMID: 20505070.
        View in: PubMed
      23. Ghosh P, Beas AO, Bornheimer SJ, Garcia-Marcos M, Forry EP, Johannson C, Ear J, Jung BH, Cabrera B, Carethers JM, Farquhar M. A G{alpha}i-GIV molecular complex binds epidermal growth factor receptor and determines whether cells migrate or proliferate. Mol Biol Cell. 2010 Jul 1; 21(13):2338-54. PMID: 20462955.
        View in: PubMed
      24. Garcia-Marcos M, Ghosh P, Ear J, Farquhar M. A structural determinant that renders G alpha(i) sensitive to activation by GIV/girdin is required to promote cell migration. J Biol Chem. 2010 Apr 23; 285(17):12765-77. PMID: 20157114.
        View in: PubMed
      25. Dippold HC, Ng MM, Farber-Katz SE, Lee SK, Kerr ML, Peterman MC, Sim R, Wiharto PA, Galbraith KA, Madhavarapu S, Fuchs GJ, Meerloo T, Farquhar M, Zhou H, Field SJ. GOLPH3 bridges phosphatidylinositol-4- phosphate and actomyosin to stretch and shape the Golgi to promote budding. Cell. 2009 Oct 16; 139(2):337-51. PMID: 19837035.
        View in: PubMed
      26. Fukasawa H, Bornheimer S, Kudlicka K, Farquhar M. Slit diaphragms contain tight junction proteins. J Am Soc Nephrol. 2009 Jul; 20(7):1491-503. PMID: 19478094.
        View in: PubMed
      27. Lin P, Fischer T, Lavoie C, Huang H, Farquhar M. Calnuc plays a role in dynamic distribution of Galphai but not Gbeta subunits and modulates ACTH secretion in AtT-20 neuroendocrine secretory cells. Mol Neurodegener. 2009; 4:15. PMID: 19320978.
        View in: PubMed
      28. Garcia-Marcos M, Ghosh P, Farquhar M. GIV is a nonreceptor GEF for G alpha i with a unique motif that regulates Akt signaling. Proc Natl Acad Sci U S A. 2009 Mar 3; 106(9):3178-83. PMID: 19211784.
        View in: PubMed
      29. Tang T, Zheng B, Chen SH, Murphy AN, Kudlicka K, Zhou H, Farquhar M. hNOA1 interacts with complex I and DAP3 and regulates mitochondrial respiration and apoptosis. J Biol Chem. 2009 Feb 20; 284(8):5414-24. PMID: 19103604.
        View in: PubMed
      30. Ghosh P, Garcia-Marcos M, Bornheimer SJ, Farquhar M. Activation of Galphai3 triggers cell migration via regulation of GIV. J Cell Biol. 2008 Jul 28; 182(2):381-93. PMID: 18663145.
        View in: PubMed
      31. Lehtonen S, Shah M, Nielsen R, Iino N, Ryan JJ, Zhou H, Farquhar M. The endocytic adaptor protein ARH associates with motor and centrosomal proteins and is involved in centrosome assembly and cytokinesis. Mol Biol Cell. 2008 Jul; 19(7):2949-61. PMID: 18417616.
        View in: PubMed
      32. Green RS, Stone EL, Tenno M, Lehtonen E, Farquhar M, Marth JD. Mammalian N-glycan branching protects against innate immune self-recognition and inflammation in autoimmune disease pathogenesis. Immunity. 2007 Aug; 27(2):308-20. PMID: 17681821.
        View in: PubMed
      33. Patel HH, Zhang S, Murray F, Suda RY, Head BP, Yokoyama U, Swaney JS, Niesman IR, Schermuly RT, Pullamsetti SS, Thistlethwaite PA, Miyanohara A, Farquhar M, Yuan JX, Insel PA. Increased smooth muscle cell expression of caveolin-1 and caveolae contribute to the pathophysiology of idiopathic pulmonary arterial hypertension. FASEB J. 2007 Sep; 21(11):2970-9. PMID: 17470567.
        View in: PubMed
      34. Lin P, Li F, Zhang YW, Huang H, Tong G, Farquhar M, Xu H. Calnuc binds to Alzheimer's beta-amyloid precursor protein and affects its biogenesis. J Neurochem. 2007 Mar; 100(6):1505-14. PMID: 17348862.
        View in: PubMed
      35. Zheng B, Tang T, Tang N, Kudlicka K, Ohtsubo K, Ma P, Marth JD, Farquhar M, Lehtonen E. Essential role of RGS-PX1/sorting nexin 13 in mouse development and regulation of endocytosis dynamics. Proc Natl Acad Sci U S A. 2006 Nov 7; 103(45):16776-81. PMID: 17077144.
        View in: PubMed
      36. Varsano T, Dong MQ, Niesman I, Gacula H, Lou X, Ma T, Testa JR, Yates JR, Farquhar M. GIPC is recruited by APPL to peripheral TrkA endosomes and regulates TrkA trafficking and signaling. Mol Cell Biol. 2006 Dec; 26(23):8942-52. PMID: 17015470.
        View in: PubMed
      37. Farquhar M. The glomerular basement membrane: not gone, just forgotten. J Clin Invest. 2006 Aug; 116(8):2090-3. PMID: 16886057.
        View in: PubMed
      38. Head BP, Patel HH, Roth DM, Murray F, Swaney JS, Niesman IR, Farquhar M, Insel PA. Microtubules and actin microfilaments regulate lipid raft/caveolae localization of adenylyl cyclase signaling components. J Biol Chem. 2006 Sep 8; 281(36):26391-9. PMID: 16818493.
        View in: PubMed
      39. Lehtonen S, Ryan JJ, Kudlicka K, Iino N, Zhou H, Farquhar M. Cell junction-associated proteins IQGAP1, MAGI-2, CASK, spectrins, and alpha-actinin are components of the nephrin multiprotein complex. Proc Natl Acad Sci U S A. 2005 Jul 12; 102(28):9814-9. PMID: 15994232.
        View in: PubMed
      40. Head BP, Patel HH, Roth DM, Lai NC, Niesman IR, Farquhar M, Insel PA. G-protein-coupled receptor signaling components localize in both sarcolemmal and intracellular caveolin-3-associated microdomains in adult cardiac myocytes. J Biol Chem. 2005 Sep 2; 280(35):31036-44. PMID: 15961389.
        View in: PubMed
      41. Le-Niculescu H, Niesman I, Fischer T, DeVries L, Farquhar M. Identification and characterization of GIV, a novel Galpha i/s-interacting protein found on COPI, endoplasmic reticulum-Golgi transport vesicles. J Biol Chem. 2005 Jun 10; 280(23):22012-20. PMID: 15749703.
        View in: PubMed
      42. Zheng B, Lavoie C, Tang TD, Ma P, Meerloo T, Beas A, Farquhar M. Regulation of epidermal growth factor receptor degradation by heterotrimeric Galphas protein. Mol Biol Cell. 2004 Dec; 15(12):5538-50. PMID: 15469987.
        View in: PubMed
      43. Lehtonen S, Lehtonen E, Kudlicka K, Holthöfer H, Farquhar M. Nephrin forms a complex with adherens junction proteins and CASK in podocytes and in Madin-Darby canine kidney cells expressing nephrin. Am J Pathol. 2004 Sep; 165(3):923-36. PMID: 15331416.
        View in: PubMed
      44. Schmieder S, Nagai M, Orlando RA, Takeda T, Farquhar M. Podocalyxin activates RhoA and induces actin reorganization through NHERF1 and Ezrin in MDCK cells. J Am Soc Nephrol. 2004 Sep; 15(9):2289-98. PMID: 15339978.
        View in: PubMed
      45. Nagai M, Meerloo T, Takeda T, Farquhar M. The adaptor protein ARH escorts megalin to and through endosomes. Mol Biol Cell. 2003 Dec; 14(12):4984-96. PMID: 14528014.
        View in: PubMed
      46. Elenko E, Fischer T, Niesman I, Harding T, McQuistan T, Von Zastrow M, Farquhar M. Spatial regulation of Galphai protein signaling in clathrin-coated membrane microdomains containing GAIP. Mol Pharmacol. 2003 Jul; 64(1):11-20. PMID: 12815156.
        View in: PubMed
      47. Fischer T, De Vries L, Meerloo T, Farquhar M. Promotion of G alpha i3 subunit down-regulation by GIPN, a putative E3 ubiquitin ligase that interacts with RGS-GAIP. Proc Natl Acad Sci U S A. 2003 Jul 8; 100(14):8270-5. PMID: 12826607.
        View in: PubMed
      48. Zheng B, Berrie CP, Corda D, Farquhar M. GDE1/MIR16 is a glycerophosphoinositol phosphodiesterase regulated by stimulation of G protein-coupled receptors. Proc Natl Acad Sci U S A. 2003 Feb 18; 100(4):1745-50. PMID: 12576545.
        View in: PubMed
      49. Takeda T, Yamazaki H, Farquhar M. Identification of an apical sorting determinant in the cytoplasmic tail of megalin. Am J Physiol Cell Physiol. 2003 May; 284(5):C1105-13. PMID: 12519751.
        View in: PubMed
      50. Lavoie C, Meerloo T, Lin P, Farquhar M. Calnuc, an EF-hand Ca(2+)-binding protein, is stored and processed in the Golgi and secreted by the constitutive-like pathway in AtT20 cells. Mol Endocrinol. 2002 Nov; 16(11):2462-74. PMID: 12403836.
        View in: PubMed
      51. Lou X, McQuistan T, Orlando RA, Farquhar M. GAIP, GIPC and Galphai3 are concentrated in endocytic compartments of proximal tubule cells: putative role in regulating megalin's function. J Am Soc Nephrol. 2002 Apr; 13(4):918-27. PMID: 11912251.
        View in: PubMed
      52. De Vries L, Farquhar M. Screening for interacting partners for G alpha i3 and RGS-GAIP using the two-hybrid system. Methods Enzymol. 2002; 344:657-73. PMID: 11771418.
        View in: PubMed
      53. Farquhar M, Palade GE. The Golgi apparatus: 100 years of progress and controversy. Trends Cell Biol. 1998 Jan; 8(1):2-10. PMID: 9695800.
        View in: PubMed
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