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Karri S, Bidou L, Namy O. P033 Therapeutic approach by translational suppression of non-sens mutation in CFTR gene. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)01060-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Wang C, Arriaga Y, Karri S, Verma U, Beg M, Olson C, Anandam J, Abdelnaby A, Balch G, Meyer J. Routine Use of Concurrent Radiation Therapy and Chemotherapy in HIV-Positive Patients With Squamous Cell Anal Cancer: Toxicity and Local Control Outcomes. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Lavania M, Turankar RP, Karri S, Chaitanya VS, Sengupta U, Jadhav RS. Cohort study of the seasonal effect on nasal carriage and the presence of Mycobacterium leprae in an endemic area in the general population. Clin Microbiol Infect 2013; 19:970-4. [PMID: 23331372 DOI: 10.1111/1469-0691.12087] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2012] [Revised: 08/09/2012] [Accepted: 10/19/2012] [Indexed: 11/29/2022]
Abstract
Leprosy continues to be a significant health problem in certain pockets in developing countries. Better understanding of the transmission and source of the infection would help to decipher the transmission link, leading to control of the spread of the disease. The nose is considered to be a portal of entry, suggesting an aerial route for transmission through droplet infection. The evidence suggests that many individuals from endemic countries carry Mycobacterium leprae in their nasal cavities without having obvious symptoms of leprosy. The objective of the present study was to assess the presence of M. leprae on the nasal mucosa in the general population from a leprosy-endemic pocket. M. leprae detection was carried out using PCR targeting RLEP. Four hundred subjects from an area highly endemic for leprosy were included in the study and followed up during three different seasons--winter, summer, and monsoon--for evidence of nasal exposure to M. leprae. PCR positivity for M. leprae was observed in 29%, 21% and 31% of the samples collected in winter, summer and the monsoon season, respectively. Twenty-six individuals from the cohort showed amplification for M. leprae for all seasons. Our results are consistent with reports in the literature showing widespread exposure to M. leprae in the endemic community. The results also suggest possible association of the environmental conditions (climate) with the transmission pattern and levels of exposure to M. leprae. However, the present study indicated that the population from highly endemic pockets will have exposure to M. leprae irrespective of season.
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Affiliation(s)
- M Lavania
- Stanley Browne Laboratory, TLM Community Hospital, Nand Nagari, Delhi, India
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Streeter CC, Whitfield TH, Perlmutter RM, Prescot AP, Karri S, Jensen JE. Regional Differences in Brain GABA Levels: an MRS Study. Neuroimage 2009. [DOI: 10.1016/s1053-8119(09)71886-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Abstract
Neurosteroids are steroids synthesised by brain cells. The molecular mechanism of neurosteroidogenesis from cholesterol has not yet been revealed. We studied the potential role of the steroidogenic acute regulatory (StAR) protein in neurosterodogenesis by using rat brain astrocytes. The novelty of the study is that regulation of StAR is described in primary cultures from embryonic mesencephalon and cerebellum regions of the brain. Dibutyryl cyclic AMP (dbcAMP) treatment increased StAR protein expression in astrocyte cultures. This was observed in immunoblots of mitochondrial fractions and by immunocytochemistry. Dual-labelling showed that the cyclic AMP-induced increase in StAR immunofluorescence was localised to mitochondria. In addition, mitochondrial cytochrome P450-side chain cleavage enzyme was demonstrated with a specific antibody, indicating the potential for pregnenolone production in these cells. Radioimmunoassay on ether-extracted conditioned media of control and dbcAMP treated cells demonstrated pregnenolone production by mesencephalic and cerebellar astrocyte cultures. Furthermore, 24-h pregnenolone levels, in the presence of inhibitors of further pregnenolone metabolism, were significantly increased by dbcAMP exposure. A murine StAR promoter-luciferase fusion plasmid was activated by dbcAMP in transiently transfected mesencephalic and cerebellar astrocytes. These novel results indicate that cyclic AMP signalling can regulate StAR expression and pregnenolone production in brain astrocytes, and provide additional insight into the role of StAR in neurosteroidogenesis.
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Affiliation(s)
- S Karri
- Department of Internal Medicine, Texas Tech University Health Sciences Center, Lubbock, TX 79430-0001, USA.
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Karri S, Govindarajan SR, Bendure WB, Jackson SA, McKelvey KD, Govindarajan R. Screening and genetic counseling practices for hereditary non-polyposis colorectal cancer (HNPCC). J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.6564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
6564 Background: HNPCC, the most common cause of hereditary colorectal cancer (CRC), is inherited in an autosomal dominant fashion and caused by micro satellite instability and mutations in mismatch repair genes. Affected patients (pts) and first degree relatives tend to develop colonic and extra colonic tumors that need to be tested for the mutations. Genetic consultation (GC) should be routinely offered to the affected pts and relatives. To assess the utilization of GC, we assessed the frequency of referral for GC for the presence of HNPCC syndrome at our medical center. Methods: Patients with CRC were identified from the tumor registry at the University of Arkansas for Medical Sciences (UAMS) and the Central Arkansas Veterans Healthcare System (CAVHS) from January 1st 2000 to September, 2006. Pts’ charts were reviewed for synchronous or metachronous HNPCC tumors and family history (FH). FH was categorized as positive according to the Bethesda criteria (BC, 2000–2002), revised Bethesda criteria (RBC, 2003–2006), negative (documented FH but no h/o cancer) or inadequate documentation. Percentage of pts with positive FH for HNPCC syndrome and those with CRC less than 50 years of age (for pts diagnosed 2003–2006) who were referred for GC was calculated. The list of these pts was cross referenced to the list in genetics clinic at UAMS and CAVHS. Results: 858 patient charts were reviewed. Table 1 shows the number of pts meeting criteria for genetic counseling. 138 (16%) pts had inadequate /no documented FH. Of the 720 pts with documented FH, 67 (9.3%) had positive FH and 126(17%) met BC / RBC. Only 13 (10.3%) of 126 pts were referred for genetic counseling. The number of pts eligible for GC increased with inclusion of RBC. However, the percentage of eligible pts referred for GC was extremely low. Conclusions: FH is not adequately documented in many pts presenting with CRC. Only a small percentage of pts who qualify for GC are referred. Education of health care providers for referral to genetics counseling is warranted. No significant financial relationships to disclose. [Table: see text]
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Affiliation(s)
- S. Karri
- University of Arkansas for Medical Sciences, Little Rock, AR
| | | | - W. B. Bendure
- University of Arkansas for Medical Sciences, Little Rock, AR
| | - S. A. Jackson
- University of Arkansas for Medical Sciences, Little Rock, AR
| | - K. D. McKelvey
- University of Arkansas for Medical Sciences, Little Rock, AR
| | - R. Govindarajan
- University of Arkansas for Medical Sciences, Little Rock, AR
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Zangari M, Barlogie B, Cavallo F, Anaissie E, Hollmig K, Manns A, Karri S, Mohiuddin A, Pineda-Roman M, Bolejack V, Tricot G. Effect on survival of treatment associated deep vein thrombosis in newly diagnosed multiple myeloma patients. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.7549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
7549 Background: Cancer patients experiencing thromboembolic disease have a poor prognosis. We report the effect on survival of treatment-associated DVT in myeloma patients. Methods: 668 newly diagnosed patients with progressive or symptomatic MM were enrolled in our Total Therapy 2 study, which included induction phase with VAD, DCEP, CAD and DCEP followed by high dose chemotherapy and tandem transplants. Patients were randomly assigned to receive Thalidomide or not during the whole treatment. Both arms otherwise received identical chemotherapy. Patients were followed and when clinically indicated underwent radiological studies to confirm a suspected DVT. If present, they were treated with low-molecular weight heparin followed by warfarin. Results: With a median follow up of 47 months a total of 158 patients experienced DVT; the median age was 57 years, 59% were male, 24% were IgA, 197 patients (30%) had abnormal cytogenetics (CA) including 100 patients with deletion of chromosome 13. The baseline characteristics were balanced between patients with and without DVT, with the exception of female gender, which was more prominent in the non DVT group (32% vs 46%, p = .018) on thalidomide, whereas CRP ≥ 8 mg/dl (57% vs 33%, p = .001), and IL6 > 9 pg/ml (47% vs 14%, p < .001) were more frequently observed in the DVT group on no thalidomide. Within each arm of the trial no significant differences in prognostic factors for survival (chromosomal abnormalities, low albumin level, β2-microglobulin, CRP) were seen. DVT status did not affect EFS (p = .3) or OS (p = .3) for the entire group, but a statistically longer EFS (p = .03) was observed in patients who developed a thromboembolic episode in the non thalidomide arm. No effect on survival (EFS p = .3; OS p = .95) was seen in the thalidomide arm. Conclusions: Development of DVT in newly diagnosed myeloma patients treated with chemotherapy ± thalidomide, does not affect overall survival. Patients not exposed to thalidomide who developed thrombosis during chemotherapy had significantly longer EFS. Our observation supports a survival benefit associated with anticoagulation therapy in cancer patients. [Table: see text]
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Affiliation(s)
- M. Zangari
- University of Arkansas for Medical Sciences, Little Rock, AR; Cancer Research and Biostatistics, Seattle, WA
| | - B. Barlogie
- University of Arkansas for Medical Sciences, Little Rock, AR; Cancer Research and Biostatistics, Seattle, WA
| | - F. Cavallo
- University of Arkansas for Medical Sciences, Little Rock, AR; Cancer Research and Biostatistics, Seattle, WA
| | - E. Anaissie
- University of Arkansas for Medical Sciences, Little Rock, AR; Cancer Research and Biostatistics, Seattle, WA
| | - K. Hollmig
- University of Arkansas for Medical Sciences, Little Rock, AR; Cancer Research and Biostatistics, Seattle, WA
| | - A. Manns
- University of Arkansas for Medical Sciences, Little Rock, AR; Cancer Research and Biostatistics, Seattle, WA
| | - S. Karri
- University of Arkansas for Medical Sciences, Little Rock, AR; Cancer Research and Biostatistics, Seattle, WA
| | - A. Mohiuddin
- University of Arkansas for Medical Sciences, Little Rock, AR; Cancer Research and Biostatistics, Seattle, WA
| | - M. Pineda-Roman
- University of Arkansas for Medical Sciences, Little Rock, AR; Cancer Research and Biostatistics, Seattle, WA
| | - V. Bolejack
- University of Arkansas for Medical Sciences, Little Rock, AR; Cancer Research and Biostatistics, Seattle, WA
| | - G. Tricot
- University of Arkansas for Medical Sciences, Little Rock, AR; Cancer Research and Biostatistics, Seattle, WA
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Sierra-Alvarez R, Karri S, Freeman S, Field JA. Biological treatment of heavy metals in acid mine drainage using sulfate reducing bioreactors. Water Sci Technol 2006; 54:179-85. [PMID: 16939100 DOI: 10.2166/wst.2006.502] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The uncontrolled release of acid mine drainage (AMD) from abandoned mines and tailing piles threatens water resources in many sites worldwide. AMD introduces elevated concentrations of sulfate ions and dissolved heavy metals as well as high acidity levels to groundwater and receiving surface water. Anaerobic biological processes relying on the activity of sulfate reducing bacteria are being considered for the treatment of AMD and other heavy metal containing effluents. Biogenic sulfides form insoluble complexes with heavy metals resulting in their precipitation. The objective of this study was to investigate the remediation of AMD in sulfate reducing bioreactors inoculated with anaerobic granular sludge and fed with an influent containing ethanol. Biological treatment of an acidic (pH 4.0) synthetic AMD containing high concentrations of heavy metals (100 mg Cu(2+)l(-1); 10 mg Ni(2+)l(-1), 10 mg Zn(2+)l(-1)) increased the effluent pH level to 7.0-7.2 and resulted in metal removal efficiencies exceeding 99.2%. The highest metal precipitation rates attained for Cu, Ni and Zn averaged 92.5, 14.6 and 15.8 mg metal l(-1) of reactor d(-1). The results of this work demonstrate that an ethanol-fed sulfidogenic reactor was highly effective to remove heavy metal contamination and neutralized the acidity of the synthetic wastewater.
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Affiliation(s)
- R Sierra-Alvarez
- Department of Chemical and Environmental Engineering, University of Arizona, Tucson 85721-0011, USA.
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Kiner-Strachan B, Goel S, Vanhove G, Bauer RJ, Verdier-Pinard D, Karri S, Desai K, Bulgaru A, Macapinlac M, Mani S. Phase I and pharmacokinetic study of a subcutaneously administered human-engineered monoclonal antibody ING-1 in patients with advanced adenocarcinomas. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.2558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- B. Kiner-Strachan
- Montefiore Medcl Ctr, Bronx, NY; Albert Einstein Cancer Ctr; Montefiore Medcl Ctr, Bronx, NY; XOMA US[LLC], Berkeley, CA; Jacobi Medcl Ctr, Bronx, NY
| | - S. Goel
- Montefiore Medcl Ctr, Bronx, NY; Albert Einstein Cancer Ctr; Montefiore Medcl Ctr, Bronx, NY; XOMA US[LLC], Berkeley, CA; Jacobi Medcl Ctr, Bronx, NY
| | - G. Vanhove
- Montefiore Medcl Ctr, Bronx, NY; Albert Einstein Cancer Ctr; Montefiore Medcl Ctr, Bronx, NY; XOMA US[LLC], Berkeley, CA; Jacobi Medcl Ctr, Bronx, NY
| | - R. J. Bauer
- Montefiore Medcl Ctr, Bronx, NY; Albert Einstein Cancer Ctr; Montefiore Medcl Ctr, Bronx, NY; XOMA US[LLC], Berkeley, CA; Jacobi Medcl Ctr, Bronx, NY
| | - D. Verdier-Pinard
- Montefiore Medcl Ctr, Bronx, NY; Albert Einstein Cancer Ctr; Montefiore Medcl Ctr, Bronx, NY; XOMA US[LLC], Berkeley, CA; Jacobi Medcl Ctr, Bronx, NY
| | - S. Karri
- Montefiore Medcl Ctr, Bronx, NY; Albert Einstein Cancer Ctr; Montefiore Medcl Ctr, Bronx, NY; XOMA US[LLC], Berkeley, CA; Jacobi Medcl Ctr, Bronx, NY
| | - K. Desai
- Montefiore Medcl Ctr, Bronx, NY; Albert Einstein Cancer Ctr; Montefiore Medcl Ctr, Bronx, NY; XOMA US[LLC], Berkeley, CA; Jacobi Medcl Ctr, Bronx, NY
| | - A. Bulgaru
- Montefiore Medcl Ctr, Bronx, NY; Albert Einstein Cancer Ctr; Montefiore Medcl Ctr, Bronx, NY; XOMA US[LLC], Berkeley, CA; Jacobi Medcl Ctr, Bronx, NY
| | - M. Macapinlac
- Montefiore Medcl Ctr, Bronx, NY; Albert Einstein Cancer Ctr; Montefiore Medcl Ctr, Bronx, NY; XOMA US[LLC], Berkeley, CA; Jacobi Medcl Ctr, Bronx, NY
| | - S. Mani
- Montefiore Medcl Ctr, Bronx, NY; Albert Einstein Cancer Ctr; Montefiore Medcl Ctr, Bronx, NY; XOMA US[LLC], Berkeley, CA; Jacobi Medcl Ctr, Bronx, NY
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Karri S, Macapinlac M, Kiner-Strachan B, Goldberg GL, Kaubisch A, Camacho FJ, Chaudhry I, Verdier-Pinard D, Mani S, Goel S. Modulation of irinotecan (Ir) efficacy with capecitabine (Cp): Albert Einstein and Montefiore Cancer Center experience. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.2072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- S. Karri
- Albert Einstein Cancer Ctr; Montefiore Medcl Ctr, Bronx, NY; Albert Einstein Cancer Ctr; Jacobi Medcl Ctr, Bronx, NY; Montefiore Medcl Ctr, Bronx, NY
| | - M. Macapinlac
- Albert Einstein Cancer Ctr; Montefiore Medcl Ctr, Bronx, NY; Albert Einstein Cancer Ctr; Jacobi Medcl Ctr, Bronx, NY; Montefiore Medcl Ctr, Bronx, NY
| | - B. Kiner-Strachan
- Albert Einstein Cancer Ctr; Montefiore Medcl Ctr, Bronx, NY; Albert Einstein Cancer Ctr; Jacobi Medcl Ctr, Bronx, NY; Montefiore Medcl Ctr, Bronx, NY
| | - G. L. Goldberg
- Albert Einstein Cancer Ctr; Montefiore Medcl Ctr, Bronx, NY; Albert Einstein Cancer Ctr; Jacobi Medcl Ctr, Bronx, NY; Montefiore Medcl Ctr, Bronx, NY
| | - A. Kaubisch
- Albert Einstein Cancer Ctr; Montefiore Medcl Ctr, Bronx, NY; Albert Einstein Cancer Ctr; Jacobi Medcl Ctr, Bronx, NY; Montefiore Medcl Ctr, Bronx, NY
| | - F. J. Camacho
- Albert Einstein Cancer Ctr; Montefiore Medcl Ctr, Bronx, NY; Albert Einstein Cancer Ctr; Jacobi Medcl Ctr, Bronx, NY; Montefiore Medcl Ctr, Bronx, NY
| | - I. Chaudhry
- Albert Einstein Cancer Ctr; Montefiore Medcl Ctr, Bronx, NY; Albert Einstein Cancer Ctr; Jacobi Medcl Ctr, Bronx, NY; Montefiore Medcl Ctr, Bronx, NY
| | - D. Verdier-Pinard
- Albert Einstein Cancer Ctr; Montefiore Medcl Ctr, Bronx, NY; Albert Einstein Cancer Ctr; Jacobi Medcl Ctr, Bronx, NY; Montefiore Medcl Ctr, Bronx, NY
| | - S. Mani
- Albert Einstein Cancer Ctr; Montefiore Medcl Ctr, Bronx, NY; Albert Einstein Cancer Ctr; Jacobi Medcl Ctr, Bronx, NY; Montefiore Medcl Ctr, Bronx, NY
| | - S. Goel
- Albert Einstein Cancer Ctr; Montefiore Medcl Ctr, Bronx, NY; Albert Einstein Cancer Ctr; Jacobi Medcl Ctr, Bronx, NY; Montefiore Medcl Ctr, Bronx, NY
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Abstract
Glycodelin-A belongs to the lipocalin superfamily. Although it is associated with normal endometrial growth during the menstrual cycle, fertilization and normal pregnancy in humans, the molecular mechanism of its biological action has not been elucidated. To undertake studies to understand the functional relevance of any molecule, obtaining large quantities of the protein becomes essential. With the ultimate aim of purifying glycodelin either from its natural sources (human amniotic fluid) or the recombinant glycodelin from bacterial recombinant lysates, we raised monoclonal antibodies to this protein. As immunogens, recombinant glycodelin expressed in E. coli and Pichia pastoris as well as glycodelin from amniotic fluid were used. The monoclonal antibodies generated were characterized with respect to binding to both the native as well as the recombinant proteins using ELISA, immunoblotting, and immunohistochemistry.
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Affiliation(s)
- S Karri
- Department of Biochemistry, Indian Institute of Science, Bangalore
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Abstract
The development of a prototype tool for modeling manufacturing in a biopharmaceutical plant is discussed. A hierarchical approach to modeling a manufacturing process has been adopted to confer maximum user flexibility. The use of this framework for assessing the impact of manufacturing decisions on strategic technical and business indicators is demonstrated via a case study. In the case study, which takes the example of a mammalian cell culture process delivering a therapeutic for clinical trials, the dynamic modeling tool indicates how manufacturing options affect the demands on resources and the associated manufacturing costs. The example illustrates how the decision-support software can be used by biopharmaceutical companies to investigate the effects of working toward different strategic goals on the cost-effectiveness of the process, prior to committing to a particular option.
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Affiliation(s)
- S S Farid
- The Advanced Centre for Biochemical Engineering, Department of Biochemical Engineering, University College London, Torrington Place, London WC1E 7JE, UK.
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Abstract
Revertants were isolated from the protease activation mutant of Sendai virus, F1-R, which causes a systemic infection in mice. The fusion (F) glycoprotein of F1-R is susceptible to activation cleavage by ubiquitous cellular proteases and is thus responsible for pantropism in mice (Tashiro et al., 1988. Virology 165, 577-583). The revertants regained several phenotypes of wild-type virus; they required exogenous trypsin for activation of the F protein in cell cultures and in nonpulmonary mouse tissues and they were exclusively pneumotropic in mice. On the other hand, phenotypes of F1-R that remained unchanged by the revertants were bipolar budding in polarized epithelial cells, enhanced electrophoretic migration of the matrix protein, and the lack of a glycosylation site in the F2 subunit of the F protein. Comparative RNA sequence analysis of the F gene of the revertants revealed that the reduced cleavability of the F protein of the revertants was the result of the predicted single amino acid reversion (Pro to Ser) at residue 115 adjacent to the cleavage site. Thus the sequence at the cleavage site of the revertants was Ser-Lys compared with Pro-Lys for F1-R and Ser-Arg for wild-type virus. The results indicate that enhanced cleavability of the glycoprotein, a feature often associated with multiple basic residues within the cleavage site of paramyxovirus F proteins and influenza virus hemagglutinins, can also be determined by a single basic amino acid following proline. Additionally, the revertants were less susceptible to the activator for wild-type virus present in mouse lungs and less pathogenic for this organ than wild-type virus. These results provide further evidence that proteolytic activation of the F protein by host proteases is the primary determinant for organ tropism and pathogenicity of Sendai virus in mice. One of the revertants was also temperature sensitive (ts); the ts lesion in the nucleoprotein gene was identical to that found in ts-f1, the ts host range mutant from which F1-R was derived.
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Affiliation(s)
- M Tashiro
- Department of Virology, Jichi Medical School, Tochigi, Japan
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