John J. Krolewski, M.D., Ph.D., is Professor and Chair of Pathology and Laboratory Medicine at the University of Rochester Medical Center. Dr. Krolewski received his undergraduate degree from M.I.T. and was an NIH MSTP fellow at New York University School of Medicine, receiving his M.D.-Ph.D. in 1984. He completed his pathology residency training at N.Y.U. in 1988.

Dr. Krolewski joined the faculty in the Pathology Department at Columbia University, College of P&S in 1990 and then moved to the University of California IRVINE School of Medicine in 1998, before coming to Rochester as Chair in July 2012. He previously established Molecular Pathology clinical laboratories at both Columbia and UC Irvine and has had an NIH funded program in cancer biology since 1992. His clinical interests are focused on the application of clinical genotyping technologies, such as the use of next-generation sequencing, to assist physicians in diagnoses, and to tailor treatment to each patient's specific genotype or cancer defect. The current focus of his research program is on the mechanisms of prostate cancer cell death with a goal of translating this knowledge into novel pro-apoptotic therapies for prostate cancer.

• Pioli PD, Saleh AM, El Fiky A, Nastiuk KL, Krolewski JJ. Sequential Proteolytic Processing of an Interferon-Alpha Receptor Subunit by TNF-Alpha Converting Enzyme and Presenilins. J Interferon Cytokine Res. 2012 Jul; 32(7):312-25.
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• Davis JS, Nastiuk KL, Krolewski JJ. TNF is necessary for castration-induced prostate regression, whereas TRAIL and FasL are dispensable. Mol Endocrinol. 2011 Apr; 25(4):611-20.
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• Yoo KS, Nastiuk KL, Krolewski JJ. Transforming growth factor beta1 induces apoptosis by suppressing FLICE-like inhibitory protein in DU145 prostate epithelial cells. Int J Cancer. 2009 Feb 15; 124(4):834-42.
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• Nastiuk KL, Krolewski JJ. FLIP-ping out: death receptor signaling in the prostate. Cancer Biol Ther. 2008 Aug; 7(8):1171-9.
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• Cornforth AN, Davis JS, Khanifar E, Nastiuk KL, Krolewski JJ. FOXO3a mediates the androgen-dependent regulation of FLIP and contributes to TRAIL-induced apoptosis of LNCaP cells. Oncogene. 2008 Jul 24; 27(32):4422-33.
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• El Fiky A, Pioli P, Azam A, Yoo K, Nastiuk KL, Krolewski JJ. Nuclear transit of the intracellular domain of the interferon receptor subunit IFNaR2 requires Stat2 and Irf9. Cell Signal. 2008 Jul; 20(7):1400-8.
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• Nastiuk KL, Yoo K, Lo K, Su K, Yeung P, Kutaka J, Danielpour D, Krolewski JJ. FLICE-like inhibitory protein blocks transforming growth factor beta 1-induced caspase activation and apoptosis in prostate epithelial cells. Mol Cancer Res. 2008 Feb; 6(2):231-42.
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• Nastiuk KL, Liu H, Hamamura M, Muftuler LT, Nalcioglu O, Krolewski JJ. In vivo MRI volumetric measurement of prostate regression and growth in mice. BMC Urol. 2007; 7:12.
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• Saleh AZ, Greenman KL, Billings S, Van Vranken DL, Krolewski JJ. Binding of madindoline A to the extracellular domain of gp130. Biochemistry. 2005 Aug 16; 44(32):10822-7.
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• El Fiky A, Arch AE, Krolewski JJ. Intracellular domain of the IFNaR2 interferon receptor subunit mediates transcription via Stat2. J Cell Physiol. 2005 Aug; 204(2):567-73.
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• Krolewski JJ. Cytokine and growth factor receptors in the nucleus: what's up with that? J Cell Biochem. 2005 Jun 1; 95(3):478-87.
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• Saleh AZ, Fang AT, Arch AE, Neupane D, El Fiky A, Krolewski JJ. Regulated proteolysis of the IFNaR2 subunit of the interferon-alpha receptor. Oncogene. 2004 Sep 16; 23(42):7076-86.
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• Kumar KG, Krolewski JJ, Fuchs SY. Phosphorylation and specific ubiquitin acceptor sites are required for ubiquitination and degradation of the IFNAR1 subunit of type I interferon receptor. J Biol Chem. 2004 Nov 5; 279(45):46614-20.
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• Nastiuk KL, Kim JW, Mann M, Krolewski JJ. Androgen regulation of FLICE-like inhibitory protein gene expression in the rat prostate. J Cell Physiol. 2003 Aug; 196(2):386-93.
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• Saleh AZ, Nguyen VP, Krolewski JJ. Affinity of Stat2 for the subunits of the interferon alpha receptor. Biochemistry. 2002 Sep 17; 41(37):11261-8.
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• Nguyen VP, Saleh AZ, Arch AE, Yan H, Piazza F, Kim J, Krolewski JJ. Stat2 binding to the interferon-alpha receptor 2 subunit is not required for interferon-alpha signaling. J Biol Chem. 2002 Mar 22; 277(12):9713-21.
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• Lukashova V, Asselin C, Krolewski JJ, Rola-Pleszczynski M, Stanková J. G-protein-independent activation of Tyk2 by the platelet-activating factor receptor. J Biol Chem. 2001 Jun 29; 276(26):24113-21.
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• Zhang Y, Turkson J, Carter-Su C, Smithgall T, Levitzki A, Kraker A, Krolewski JJ, Medveczky P, Jove R. Activation of Stat3 in v-Src-transformed fibroblasts requires cooperation of Jak1 kinase activity. J Biol Chem. 2000 Aug 11; 275(32):24935-44.
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• Nastiuk KL, Mansukhani M, Terry MB, Kularatne P, Rubin MA, Melamed J, Gammon MD, Ittmann M, Krolewski JJ. Common mutations in BRCA1 and BRCA2 do not contribute to early prostate cancer in Jewish men. Prostate. 1999 Aug 1; 40(3):172-7.
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• Printz DJ, Strauss DH, Goetz R, Sadiq S, Malaspina D, Krolewski J, Gorman JM. Elevation of CD5+ B lymphocytes in schizophrenia. Biol Psychiatry. 1999 Jul 1; 46(1):110-8.
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• Danial NN, Losman JA, Lu T, Yip N, Krishnan K, Krolewski J, Goff SP, Wang JY, Rothman PB. Direct interaction of Jak1 and v-Abl is required for v-Abl-induced activation of STATs and proliferation. Mol Cell Biol. 1998 Nov; 18(11):6795-804.
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• Krishnan K, Singh B, Krolewski JJ. Identification of amino acid residues critical for the Src-homology 2 domain-dependent docking of Stat2 to the interferon alpha receptor. J Biol Chem. 1998 Jul 31; 273(31):19495-501.
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• Yan H, Piazza F, Krishnan K, Pine R, Krolewski JJ. Definition of the interferon-alpha receptor-binding domain on the TYK2 kinase. J Biol Chem. 1998 Feb 13; 273(7):4046-51.
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• Singh B, Ittmann MM, Krolewski JJ. Sporadic breast cancers exhibit loss of heterozygosity on chromosome segment 10q23 close to the Cowden disease locus. Genes Chromosomes Cancer. 1998 Feb; 21(2):166-71.
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• Domanski P, Fish E, Nadeau OW, Witte M, Platanias LC, Yan H, Krolewski J, Pitha P, Colamonici OR. A region of the beta subunit of the interferon alpha receptor different from box 1 interacts with Jak1 and is sufficient to activate the Jak-Stat pathway and induce an antiviral state. J Biol Chem. 1997 Oct 17; 272(42):26388-93.
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• Mansukhani MM, Nastiuk KL, Hibshoosh H, Kularatne P, Russo D, Krolewski JJ. Convenient, nonradioactive, heteroduplex-based methods for identifying recurrent mutations in the BRCA1 and BRCA2 genes. Diagn Mol Pathol. 1997 Aug; 6(4):229-37.
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• Stancato LF, Sakatsume M, David M, Dent P, Dong F, Petricoin EF, Krolewski JJ, Silvennoinen O, Saharinen P, Pierce J, Marshall CJ, Sturgill T, Finbloom DS, Larner AC. Beta interferon and oncostatin M activate Raf-1 and mitogen-activated protein kinase through a JAK1-dependent pathway. Mol Cell Biol. 1997 Jul; 17(7):3833-40.
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• Krishnan K, Pine R, Krolewski JJ. Kinase-deficient forms of Jak1 and Tyk2 inhibit interferon alpha signaling in a dominant manner. Eur J Biochem. 1997 Jul 1; 247(1):298-305.
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• Uddin S, Sweet M, Colamonici OR, Krolewski JJ, Platanias LC. The vav proto-oncogene product (p95vav) interacts with the Tyk-2 protein tyrosine kinase. FEBS Lett. 1997 Feb 10; 403(1):31-4.
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• Krishnan K, Yan H, Lim JT, Krolewski JJ. Dimerization of a chimeric CD4-interferon-alpha receptor reconstitutes the signaling events preceding STAT phosphorylation. Oncogene. 1996 Jul 4; 13(1):125-33.
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• Eilers A, Kanda K, Klose B, Krolewski J, Decker T. Constitutive STAT1 tyrosine phosphorylation in U937 monocytes overexpressing the TYK2 protein tyrosine kinase does not induce gene transcription. Cell Growth Differ. 1996 Jun; 7(6):833-40.
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• Yan H, Krishnan K, Lim JT, Contillo LG, Krolewski JJ. Molecular characterization of an alpha interferon receptor 1 subunit (IFNaR1) domain required for TYK2 binding and signal transduction. Mol Cell Biol. 1996 May; 16(5):2074-82.
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• Gupta S, Yan H, Wong LH, Ralph S, Krolewski J, Schindler C. The SH2 domains of Stat1 and Stat2 mediate multiple interactions in the transduction of IFN-alpha signals. EMBO J. 1996 Mar 1; 15(5):1075-84.
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• Yan H, Krishnan K, Greenlund AC, Gupta S, Lim JT, Schreiber RD, Schindler CW, Krolewski JJ. Phosphorylated interferon-alpha receptor 1 subunit (IFNaR1) acts as a docking site for the latent form of the 113 kDa STAT2 protein. EMBO J. 1996 Mar 1; 15(5):1064-74.
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• Davis E, Krishnan K, Yan H, Newcomb EW, Krolewski JJ. A mutant form of p135tyk2, an interferon-alpha inducible tyrosine kinase, suppresses the transformed phenotype of Daudi cells. Leukemia. 1996 Mar; 10(3):543-51.
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• Domanski P, Yan H, Witte MM, Krolewski J, Colamonici OR. Homodimerization and intermolecular tyrosine phosphorylation of the Tyk-2 tyrosine kinase. FEBS Lett. 1995 Nov 6; 374(3):317-22.
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• Yan H, Lim JT, Contillo LG, Krolewski JJ. Glutathione S-transferase fusion proteins mimic receptor dimerization in permeabilized cells. Anal Biochem. 1995 Nov 1; 231(2):455-8.
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• Yetter A, Uddin S, Krolewski JJ, Jiao H, Yi T, Platanias LC. Association of the interferon-dependent tyrosine kinase Tyk-2 with the hematopoietic cell phosphatase. J Biol Chem. 1995 Aug 4; 270(31):18179-82.
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• Greenlund AC, Morales MO, Viviano BL, Yan H, Krolewski J, Schreiber RD. Stat recruitment by tyrosine-phosphorylated cytokine receptors: an ordered reversible affinity-driven process. Immunity. 1995 Jun; 2(6):677-87.
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• Colamonici O, Yan H, Domanski P, Handa R, Smalley D, Mullersman J, Witte M, Krishnan K, Krolewski J. Direct binding to and tyrosine phosphorylation of the alpha subunit of the type I interferon receptor by p135tyk2 tyrosine kinase. Mol Cell Biol. 1994 Dec; 14(12):8133-42.
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• Ittmann M, Wieczorek R, Heller P, Dave A, Provet J, Krolewski J. Alterations in the p53 and MDM-2 genes are infrequent in clinically localized, stage B prostate adenocarcinomas. Am J Pathol. 1994 Aug; 145(2):287-93.
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• Colamonici OR, Domanski P, Krolewski JJ, Fu XY, Reich NC, Pfeffer LM, Sweet ME, Platanias LC. Interferon alpha (IFN alpha) signaling in cells expressing the variant form of the type I IFN receptor. J Biol Chem. 1994 Feb 25; 269(8):5660-5.
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• Colamonici OR, Uyttendaele H, Domanski P, Yan H, Krolewski JJ. p135tyk2, an interferon-alpha-activated tyrosine kinase, is physically associated with an interferon-alpha receptor. J Biol Chem. 1994 Feb 4; 269(5):3518-22.
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• Krolewski JJ, Dalla-Favera R. The ltk gene encodes a novel receptor-type protein tyrosine kinase. EMBO J. 1991 Oct; 10(10):2911-9.
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• Firmbach-Kraft I, Byers M, Shows T, Dalla-Favera R, Krolewski JJ. tyk2, prototype of a novel class of non-receptor tyrosine kinase genes. Oncogene. 1990 Sep; 5(9):1329-36.
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• Krolewski JJ, Lee R, Eddy R, Shows TB, Dalla-Favera R. Identification and chromosomal mapping of new human tyrosine kinase genes. Oncogene. 1990 Mar; 5(3):277-82.
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• Smereczynski A, Krolewski J, Krzysztalowksi A. [Developmental anomalies of the cranio-cervical region]. Chir Narzadow Ruchu Ortop Pol. 1990; 55(4-6):293-7.
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• Krolewski JJ, Dalla-Favera R. Molecular genetic approaches in the diagnosis and classification of lymphoid malignancies. Hematol Pathol. 1989; 3(2):45-61.
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• Krolewski JJ, Rush MG. Some extrachromosomal circular DNAs containing the Alu family of dispersed repetitive sequences may be reverse transcripts. J Mol Biol. 1984 Mar 25; 174(1):31-40.
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• Krolewski JJ, Schindler CW, Rush MG. Structure of extrachromosomal circular DNAs containing both the Alu family of dispersed repetitive sequences and other regions of chromosomal DNA. J Mol Biol. 1984 Mar 25; 174(1):41-54.
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• Schindler CW, Krolewski JJ, Rush MG. Selective trapping of circular double-stranded DNA molecules in solidifying agarose. Plasmid. 1982 May; 7(3):263-70.
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• Krolewski JJ, Bertelsen AH, Humayun MZ, Rush MG. Members of the Alu family of interspersed, repetitive DNA sequences are in the small circular DNA population of monkey cells grown in culture. J Mol Biol. 1982 Jan 25; 154(3):399-415.
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• Krolewski JJ, Murphy E, Novick RP, Rush MG. Site-specificity of the chromosomal insertion of Staphylococcus aureus transposon Tn554. J Mol Biol. 1981 Oct 15; 152(1):19-33.
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• Novick RP, Khan SA, Murphy E, Iordanescu S, Edelman I, Krolewski J, Rush M. Hitchhiking transposons and other mobile genetic elements and site-specific recombination systems in Staphylococcus aureus. Cold Spring Harb Symp Quant Biol. 1981; 45 Pt 1:67-76.
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• Skopek TR, Liber HL, Krolewski JJ, Thilly WG. Quantitative forward mutation assay in Salmonella typhimurium using 8-azaguanine resistance as a genetic marker. Proc Natl Acad Sci U S A. 1978 Jan; 75(1):410-4.
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• Deluca JG, Krolewski J, Skopek TR, Kaden DA, Thilly WG. 9-Aminoacridine-A frameshift mutagen for Salmonella typhimurium TA 1537 inactive at the hgprt locus in human lymphoblasts. Mutat Res. 1977 Feb; 42(2):327-30.
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• Deluca JG, Kaden DA, Krolewski J, Skopek TR, Thilly WG. Comparative mutagenicity of ICR-191 to S. typhimurium and diploid human lymphoblasts. Mutat Res. 1977 Feb 1; 46(1):11-8.
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• Bogutyn W, Krolewski J. [Deformations in the Klippel-Trenaunay syndrome]. Chir Narzadow Ruchu Ortop Pol. 1972; 37(3):398-403.
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